From 3c863792e9b882c9256b4396742a4b257fb9c557 Mon Sep 17 00:00:00 2001 From: Heiner Kallweit Date: Thu, 3 Sep 2015 22:38:46 +0200 Subject: spi: s3c64xx: clean up runtime PM if driver registration fails Fix missing runtime PM cleanup if driver registration fails. Signed-off-by: Heiner Kallweit Reviewed-by: Krzysztof Kozlowski Signed-off-by: Mark Brown --- drivers/spi/spi-s3c64xx.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index cd1cfac0447f..8a6ab880601a 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -1186,7 +1186,7 @@ static int s3c64xx_spi_probe(struct platform_device *pdev) ret = devm_spi_register_master(&pdev->dev, master); if (ret != 0) { dev_err(&pdev->dev, "cannot register SPI master: %d\n", ret); - goto err3; + goto err4; } dev_dbg(&pdev->dev, "Samsung SoC SPI Driver loaded for Bus SPI-%d with %d Slaves attached\n", @@ -1197,6 +1197,9 @@ static int s3c64xx_spi_probe(struct platform_device *pdev) return 0; +err4: + pm_runtime_disable(&pdev->dev); + pm_runtime_set_suspended(&pdev->dev); err3: clk_disable_unprepare(sdd->src_clk); err2: -- cgit v1.2.1 From 483867ee2070e045eb0a18fb7bb2f79d2433339f Mon Sep 17 00:00:00 2001 From: Heiner Kallweit Date: Thu, 3 Sep 2015 22:39:36 +0200 Subject: spi: s3c64xx: extend driver to make full use of runtime PM autosuspend Extend the driver to make full use of runtime PM autosuspend. Before only the SPI core was instructed to use autosuspend by setting master->auto_runtime_pm. Nevertheless due to the missing pm_runtime_use_autosuspend call autosuspend wasn't active. Signed-off-by: Heiner Kallweit Reviewed-by: Krzysztof Kozlowski Signed-off-by: Mark Brown --- drivers/spi/spi-s3c64xx.c | 26 ++++++++++++++++++-------- 1 file changed, 18 insertions(+), 8 deletions(-) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 8a6ab880601a..d117fa638ee3 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -32,6 +32,7 @@ #define MAX_SPI_PORTS 6 #define S3C64XX_SPI_QUIRK_POLL (1 << 0) #define S3C64XX_SPI_QUIRK_CS_AUTO (1 << 1) +#define AUTOSUSPEND_TIMEOUT 2000 /* Registers and bit-fields */ @@ -859,13 +860,15 @@ static int s3c64xx_spi_setup(struct spi_device *spi) } } - pm_runtime_put(&sdd->pdev->dev); + pm_runtime_mark_last_busy(&sdd->pdev->dev); + pm_runtime_put_autosuspend(&sdd->pdev->dev); if (!(sdd->port_conf->quirks & S3C64XX_SPI_QUIRK_CS_AUTO)) writel(S3C64XX_SPI_SLAVE_SIG_INACT, sdd->regs + S3C64XX_SPI_SLAVE_SEL); return 0; setup_exit: - pm_runtime_put(&sdd->pdev->dev); + pm_runtime_mark_last_busy(&sdd->pdev->dev); + pm_runtime_put_autosuspend(&sdd->pdev->dev); /* setup() returns with device de-selected */ if (!(sdd->port_conf->quirks & S3C64XX_SPI_QUIRK_CS_AUTO)) writel(S3C64XX_SPI_SLAVE_SIG_INACT, sdd->regs + S3C64XX_SPI_SLAVE_SEL); @@ -1162,6 +1165,12 @@ static int s3c64xx_spi_probe(struct platform_device *pdev) goto err2; } + pm_runtime_set_autosuspend_delay(&pdev->dev, AUTOSUSPEND_TIMEOUT); + pm_runtime_use_autosuspend(&pdev->dev); + pm_runtime_set_active(&pdev->dev); + pm_runtime_enable(&pdev->dev); + pm_runtime_get_sync(&pdev->dev); + /* Setup Deufult Mode */ s3c64xx_spi_hwinit(sdd, sdd->port_id); @@ -1180,13 +1189,10 @@ static int s3c64xx_spi_probe(struct platform_device *pdev) S3C64XX_SPI_INT_TX_OVERRUN_EN | S3C64XX_SPI_INT_TX_UNDERRUN_EN, sdd->regs + S3C64XX_SPI_INT_EN); - pm_runtime_set_active(&pdev->dev); - pm_runtime_enable(&pdev->dev); - ret = devm_spi_register_master(&pdev->dev, master); if (ret != 0) { dev_err(&pdev->dev, "cannot register SPI master: %d\n", ret); - goto err4; + goto err3; } dev_dbg(&pdev->dev, "Samsung SoC SPI Driver loaded for Bus SPI-%d with %d Slaves attached\n", @@ -1195,12 +1201,16 @@ static int s3c64xx_spi_probe(struct platform_device *pdev) mem_res, (FIFO_LVL_MASK(sdd) >> 1) + 1, sdd->rx_dma.dmach, sdd->tx_dma.dmach); + pm_runtime_mark_last_busy(&pdev->dev); + pm_runtime_put_autosuspend(&pdev->dev); + return 0; -err4: +err3: + pm_runtime_put_noidle(&pdev->dev); pm_runtime_disable(&pdev->dev); pm_runtime_set_suspended(&pdev->dev); -err3: + clk_disable_unprepare(sdd->src_clk); err2: clk_disable_unprepare(sdd->clk); -- cgit v1.2.1 From 4fcd9b9e06d43b93d00bf02c767d578e7cf8b25c Mon Sep 17 00:00:00 2001 From: Heiner Kallweit Date: Thu, 3 Sep 2015 22:40:11 +0200 Subject: spi: s3c64xx: simplify suspend / resume handlers The runtime PM suspend / resume handlers take care of the enabling/ disabling the clocks already. Therefore replace the duplicated clock handling with pm_runtime_force_suspend/resume. Signed-off-by: Heiner Kallweit Reviewed-by: Krzysztof Kozlowski Signed-off-by: Mark Brown --- drivers/spi/spi-s3c64xx.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index d117fa638ee3..4e5931cabfa2 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -1246,10 +1246,9 @@ static int s3c64xx_spi_suspend(struct device *dev) if (ret) return ret; - if (!pm_runtime_suspended(dev)) { - clk_disable_unprepare(sdd->clk); - clk_disable_unprepare(sdd->src_clk); - } + ret = pm_runtime_force_suspend(dev); + if (ret < 0) + return ret; sdd->cur_speed = 0; /* Output Clock is stopped */ @@ -1261,14 +1260,14 @@ static int s3c64xx_spi_resume(struct device *dev) struct spi_master *master = dev_get_drvdata(dev); struct s3c64xx_spi_driver_data *sdd = spi_master_get_devdata(master); struct s3c64xx_spi_info *sci = sdd->cntrlr_info; + int ret; if (sci->cfg_gpio) sci->cfg_gpio(); - if (!pm_runtime_suspended(dev)) { - clk_prepare_enable(sdd->src_clk); - clk_prepare_enable(sdd->clk); - } + ret = pm_runtime_force_resume(dev); + if (ret < 0) + return ret; s3c64xx_spi_hwinit(sdd, sdd->port_id); -- cgit v1.2.1 From 8ebe9d163e93e10458f3fd7522f29f9149e58632 Mon Sep 17 00:00:00 2001 From: Heiner Kallweit Date: Thu, 3 Sep 2015 22:40:53 +0200 Subject: spi: s3c64xx: replace clock disabling with runtime PM suspend call in remove function Simplify s3c64xx_spi_remove by replacing the clock disabling with calling runtime PM suspend which does the same. Waking up the device if it was suspended wouldn't be strictly needed for this driver but using pm_runtime_get_sync is cleaner and makes s3c64xx_spi_remove more consistent with the runtime PM handling in s3c64xx_spi_setup. pm_runtime_force_suspend does most of the work for us: disabling the clocks, disabling runtime PM and setting it to "suspended" state. Signed-off-by: Heiner Kallweit Reviewed-by: Krzysztof Kozlowski Signed-off-by: Mark Brown --- drivers/spi/spi-s3c64xx.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 4e5931cabfa2..dee82e1ae65d 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -1225,7 +1225,7 @@ static int s3c64xx_spi_remove(struct platform_device *pdev) struct spi_master *master = spi_master_get(platform_get_drvdata(pdev)); struct s3c64xx_spi_driver_data *sdd = spi_master_get_devdata(master); - pm_runtime_disable(&pdev->dev); + pm_runtime_get_sync(&pdev->dev); writel(0, sdd->regs + S3C64XX_SPI_INT_EN); @@ -1233,6 +1233,10 @@ static int s3c64xx_spi_remove(struct platform_device *pdev) clk_disable_unprepare(sdd->clk); + pm_runtime_put_noidle(&pdev->dev); + pm_runtime_disable(&pdev->dev); + pm_runtime_set_suspended(&pdev->dev); + return 0; } -- cgit v1.2.1 From 2bdf5151a3a9224d622f1f2bdd20f56bad5d2505 Mon Sep 17 00:00:00 2001 From: Jonas Gorski Date: Thu, 10 Sep 2015 16:11:39 +0200 Subject: spi/bcm63xx: remove unused rx_tail variable Fixes the following warning: drivers/spi/spi-bcm63xx.c:125:5: warning: unused variable 'rx_tail' [-Wunused-variable] u8 rx_tail; ^ Signed-off-by: Jonas Gorski Signed-off-by: Mark Brown --- drivers/spi/spi-bcm63xx.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/spi/spi-bcm63xx.c b/drivers/spi/spi-bcm63xx.c index e73e2b052c9c..2b908db0abb1 100644 --- a/drivers/spi/spi-bcm63xx.c +++ b/drivers/spi/spi-bcm63xx.c @@ -122,7 +122,6 @@ static int bcm63xx_txrx_bufs(struct spi_device *spi, struct spi_transfer *first, struct bcm63xx_spi *bs = spi_master_get_devdata(spi->master); u16 msg_ctl; u16 cmd; - u8 rx_tail; unsigned int i, timeout = 0, prepend_len = 0, len = 0; struct spi_transfer *t = first; bool do_rx = false; -- cgit v1.2.1 From 65059997306901f4da1f5168db65de8225d5d04c Mon Sep 17 00:00:00 2001 From: Jonas Gorski Date: Thu, 10 Sep 2015 16:11:40 +0200 Subject: spi/bcm63xx: always use a fixed number of CS We always pass 8 for the number of chip selects, so we can as well hardcode it to this number. Signed-off-by: Jonas Gorski Signed-off-by: Mark Brown --- drivers/spi/spi-bcm63xx.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-bcm63xx.c b/drivers/spi/spi-bcm63xx.c index 2b908db0abb1..a997c641b692 100644 --- a/drivers/spi/spi-bcm63xx.c +++ b/drivers/spi/spi-bcm63xx.c @@ -31,6 +31,8 @@ #define BCM63XX_SPI_MAX_PREPEND 15 +#define BCM63XX_SPI_MAX_CS 8 + struct bcm63xx_spi { struct completion done; @@ -368,7 +370,7 @@ static int bcm63xx_spi_probe(struct platform_device *pdev) } master->bus_num = pdata->bus_num; - master->num_chipselect = pdata->num_chipselect; + master->num_chipselect = BCM63XX_SPI_MAX_CS; master->transfer_one_message = bcm63xx_spi_transfer_one; master->mode_bits = MODEBITS; master->bits_per_word_mask = SPI_BPW_MASK(8); -- cgit v1.2.1 From a45fcea5b20f1dcc2abb08aa29ecb2feacae60f2 Mon Sep 17 00:00:00 2001 From: Jonas Gorski Date: Thu, 10 Sep 2015 16:11:41 +0200 Subject: spi/bcm63xx: hardcode busnum to 0 We always pass 0 as the spi bus number, so we might as well hard code it. Signed-off-by: Jonas Gorski Signed-off-by: Mark Brown --- drivers/spi/spi-bcm63xx.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-bcm63xx.c b/drivers/spi/spi-bcm63xx.c index a997c641b692..c1364a8fa268 100644 --- a/drivers/spi/spi-bcm63xx.c +++ b/drivers/spi/spi-bcm63xx.c @@ -32,6 +32,7 @@ #define BCM63XX_SPI_MAX_PREPEND 15 #define BCM63XX_SPI_MAX_CS 8 +#define BCM63XX_SPI_BUS_NUM 0 struct bcm63xx_spi { struct completion done; @@ -369,7 +370,7 @@ static int bcm63xx_spi_probe(struct platform_device *pdev) goto out_err; } - master->bus_num = pdata->bus_num; + master->bus_num = BCM63XX_SPI_BUS_NUM; master->num_chipselect = BCM63XX_SPI_MAX_CS; master->transfer_one_message = bcm63xx_spi_transfer_one; master->mode_bits = MODEBITS; -- cgit v1.2.1 From 158fcc4e050a75b609bbef1007cf7bf2a01ca043 Mon Sep 17 00:00:00 2001 From: Jonas Gorski Date: Thu, 10 Sep 2015 16:11:42 +0200 Subject: spi/bcm63xx: replace custom io accessors with standard ones Replace all bcm_read* with (io)read. Due to this block following system endianness, make sure we match that. Signed-off-by: Jonas Gorski Signed-off-by: Mark Brown --- drivers/spi/spi-bcm63xx.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/drivers/spi/spi-bcm63xx.c b/drivers/spi/spi-bcm63xx.c index c1364a8fa268..ef05387c1341 100644 --- a/drivers/spi/spi-bcm63xx.c +++ b/drivers/spi/spi-bcm63xx.c @@ -56,25 +56,33 @@ struct bcm63xx_spi { static inline u8 bcm_spi_readb(struct bcm63xx_spi *bs, unsigned int offset) { - return bcm_readb(bs->regs + bcm63xx_spireg(offset)); + return readb(bs->regs + bcm63xx_spireg(offset)); } static inline u16 bcm_spi_readw(struct bcm63xx_spi *bs, unsigned int offset) { - return bcm_readw(bs->regs + bcm63xx_spireg(offset)); +#ifdef CONFIG_BIG_ENDIAN + return ioread16(bs->regs + bcm63xx_spireg(offset)); +#else + return readw(bs->regs + bcm63xx_spireg(offset)); +#endif } static inline void bcm_spi_writeb(struct bcm63xx_spi *bs, u8 value, unsigned int offset) { - bcm_writeb(value, bs->regs + bcm63xx_spireg(offset)); + writeb(value, bs->regs + bcm63xx_spireg(offset)); } static inline void bcm_spi_writew(struct bcm63xx_spi *bs, u16 value, unsigned int offset) { - bcm_writew(value, bs->regs + bcm63xx_spireg(offset)); +#ifdef CONFIG_BIG_ENDIAN + iowrite16(value, bs->regs + bcm63xx_spireg(offset)); +#else + writew(value, bs->regs + bcm63xx_spireg(offset)); +#endif } static const unsigned bcm63xx_spi_freq_table[SPI_CLK_MASK][2] = { -- cgit v1.2.1 From 6774eea6d7a61616384743b218cf77f322e060d9 Mon Sep 17 00:00:00 2001 From: Vaishali Thakkar Date: Thu, 20 Aug 2015 23:28:38 +0530 Subject: spi: bcm53xx: Adjust devm usage Remove use of spi_unregister_master in remove function as devm_spi_register_master in probe function automatically handles it. To be compatible with the change, use direct return instead of goto and remove unnedded label out. Also, remove bcm53xxspi_bcma_remove as it is now redundant. Signed-off-by: Vaishali Thakkar Signed-off-by: Mark Brown --- drivers/spi/spi-bcm53xx.c | 13 ++----------- 1 file changed, 2 insertions(+), 11 deletions(-) diff --git a/drivers/spi/spi-bcm53xx.c b/drivers/spi/spi-bcm53xx.c index 1520554978a3..cc3f938f0a6b 100644 --- a/drivers/spi/spi-bcm53xx.c +++ b/drivers/spi/spi-bcm53xx.c @@ -247,28 +247,19 @@ static int bcm53xxspi_bcma_probe(struct bcma_device *core) if (err) { spi_master_put(master); bcma_set_drvdata(core, NULL); - goto out; + return err; } /* Broadcom SoCs (at least with the CC rev 42) use SPI for flash only */ spi_new_device(master, &bcm53xx_info); -out: - return err; -} - -static void bcm53xxspi_bcma_remove(struct bcma_device *core) -{ - struct bcm53xxspi *b53spi = bcma_get_drvdata(core); - - spi_unregister_master(b53spi->master); + return 0; } static struct bcma_driver bcm53xxspi_bcma_driver = { .name = KBUILD_MODNAME, .id_table = bcm53xxspi_bcma_tbl, .probe = bcm53xxspi_bcma_probe, - .remove = bcm53xxspi_bcma_remove, }; /************************************************** -- cgit v1.2.1 From 45a3e771085d16c95eb54f8009d795941b21fb28 Mon Sep 17 00:00:00 2001 From: Tobias Klauser Date: Wed, 9 Sep 2015 13:55:53 +0200 Subject: spi: oc-tiny: Use of_property_read_u32 instead of open-coding it Use of_property_read_u32 instead of of_get_property with return value checks and endianness conversion. Signed-off-by: Tobias Klauser Signed-off-by: Mark Brown --- drivers/spi/spi-oc-tiny.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/drivers/spi/spi-oc-tiny.c b/drivers/spi/spi-oc-tiny.c index 76656a77ec12..b5911282a611 100644 --- a/drivers/spi/spi-oc-tiny.c +++ b/drivers/spi/spi-oc-tiny.c @@ -207,8 +207,7 @@ static int tiny_spi_of_probe(struct platform_device *pdev) struct tiny_spi *hw = platform_get_drvdata(pdev); struct device_node *np = pdev->dev.of_node; unsigned int i; - const __be32 *val; - int len; + u32 val; if (!np) return 0; @@ -226,13 +225,10 @@ static int tiny_spi_of_probe(struct platform_device *pdev) return -ENODEV; } hw->bitbang.master->dev.of_node = pdev->dev.of_node; - val = of_get_property(pdev->dev.of_node, - "clock-frequency", &len); - if (val && len >= sizeof(__be32)) - hw->freq = be32_to_cpup(val); - val = of_get_property(pdev->dev.of_node, "baud-width", &len); - if (val && len >= sizeof(__be32)) - hw->baudwidth = be32_to_cpup(val); + if (!of_property_read_u32(np, "clock-frequency", &val)) + hw->freq = val; + if (!of_property_read_u32(np, "baud-width", &val)) + hw->baudwidth = val; return 0; } #else /* !CONFIG_OF */ -- cgit v1.2.1 From fc306de9b54e94a2949fee452741c00259d7dd4a Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Tue, 15 Sep 2015 16:26:13 +0300 Subject: spi: txx9: Use transfer speed unconditionally SPI core validates the transfer speed and defaults to spi->max_speed_hz in case the transfer speed is not set. Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- drivers/spi/spi-txx9.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/spi/spi-txx9.c b/drivers/spi/spi-txx9.c index 9190124b6d90..d69f8f8f3fa6 100644 --- a/drivers/spi/spi-txx9.c +++ b/drivers/spi/spi-txx9.c @@ -181,7 +181,7 @@ static void txx9spi_work_one(struct txx9spi *c, struct spi_message *m) u32 data; unsigned int len = t->len; unsigned int wsize; - u32 speed_hz = t->speed_hz ? : spi->max_speed_hz; + u32 speed_hz = t->speed_hz; u8 bits_per_word = t->bits_per_word; wsize = bits_per_word >> 3; /* in bytes */ -- cgit v1.2.1 From 88d4a7440e51754bd44f58fe1f8c6e6fe050e929 Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Tue, 15 Sep 2015 16:26:14 +0300 Subject: spi: s3c64xx: Use transfer speed unconditionally SPI core validates the transfer speed and defaults to spi->max_speed_hz in case the transfer speed is not set. Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- drivers/spi/spi-s3c64xx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index dee82e1ae65d..8e86e7f6663a 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -683,7 +683,7 @@ static int s3c64xx_spi_transfer_one(struct spi_master *master, /* Only BPW and Speed may change across transfers */ bpw = xfer->bits_per_word; - speed = xfer->speed_hz ? : spi->max_speed_hz; + speed = xfer->speed_hz; if (bpw != sdd->cur_bpw || speed != sdd->cur_speed) { sdd->cur_bpw = bpw; -- cgit v1.2.1 From 8cf3af32902d14f6a0fbc4ad9a3025d9e7d4701b Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Tue, 15 Sep 2015 16:26:15 +0300 Subject: spi: octeon: Use transfer speed unconditionally SPI core validates the transfer speed and defaults to spi->max_speed_hz in case the transfer speed is not set. Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- drivers/spi/spi-octeon.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/spi/spi-octeon.c b/drivers/spi/spi-octeon.c index e99d6a93d394..07e4ce8273df 100644 --- a/drivers/spi/spi-octeon.c +++ b/drivers/spi/spi-octeon.c @@ -65,7 +65,7 @@ static int octeon_spi_do_transfer(struct octeon_spi *p, cpha = mode & SPI_CPHA; cpol = mode & SPI_CPOL; - speed_hz = xfer->speed_hz ? : spi->max_speed_hz; + speed_hz = xfer->speed_hz; clkdiv = octeon_get_io_clock_rate() / (2 * speed_hz); -- cgit v1.2.1 From 57b48ab49b7a9ac5ff94402ade2ccb5d63579816 Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Tue, 15 Sep 2015 16:26:16 +0300 Subject: spi: bfin-sport: Calculate transfer speed unconditionally SPI core validates the transfer speed and defaults to spi->max_speed_hz in case the transfer speed is not set so code here won't use the chip->baud value (which is derived from spi->max_speed_hz). Please note driver uses chip->baud at the beginning of message transmission by calling the bfin_sport_spi_restore_state() but then programs per transfer speed in bfin_sport_spi_pump_transfers(). I'm not familiar with the HW so I don't know would it be possible to remove chip->baud completely by either using constant value in bfin_sport_spi_restore_state() or by removing the tclkdiv register write there. Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- drivers/spi/spi-bfin-sport.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/spi/spi-bfin-sport.c b/drivers/spi/spi-bfin-sport.c index a78693189f45..6c967555a56a 100644 --- a/drivers/spi/spi-bfin-sport.c +++ b/drivers/spi/spi-bfin-sport.c @@ -352,10 +352,7 @@ bfin_sport_spi_pump_transfers(unsigned long data) transfer = drv_data->cur_transfer; chip = drv_data->cur_chip; - if (transfer->speed_hz) - transfer_speed = bfin_sport_hz_to_spi_baud(transfer->speed_hz); - else - transfer_speed = chip->baud; + transfer_speed = bfin_sport_hz_to_spi_baud(transfer->speed_hz); bfin_write(&drv_data->regs->tclkdiv, transfer_speed); SSYNC(); -- cgit v1.2.1 From 95a8fde23ef426aeee579bc99f35dc854e711225 Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Tue, 15 Sep 2015 16:26:17 +0300 Subject: spi: spi-bfin5xx: Calculate transfer speed unconditionally SPI core validates the transfer speed and defaults to spi->max_speed_hz in case the transfer speed is not set so code here won't use the chip->baud value (which is derived from spi->max_speed_hz). Please note driver uses chip->baud at the beginning of message transmission by calling the bfin_spi_restore_state() but then programs per transfer speed in bfin_spi_pump_transfers(). I'm not familiar with the HW so I don't know would it be possible to remove chip->baud completely by either using constant value in bfin_spi_restore_state() or by removing the baud register write there. Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- drivers/spi/spi-bfin5xx.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/drivers/spi/spi-bfin5xx.c b/drivers/spi/spi-bfin5xx.c index a3d65b4f4944..1e91325bf39c 100644 --- a/drivers/spi/spi-bfin5xx.c +++ b/drivers/spi/spi-bfin5xx.c @@ -661,11 +661,7 @@ static void bfin_spi_pump_transfers(unsigned long data) message->state = RUNNING_STATE; dma_config = 0; - /* Speed setup (surely valid because already checked) */ - if (transfer->speed_hz) - bfin_write(&drv_data->regs->baud, hz_to_spi_baud(transfer->speed_hz)); - else - bfin_write(&drv_data->regs->baud, chip->baud); + bfin_write(&drv_data->regs->baud, hz_to_spi_baud(transfer->speed_hz)); bfin_write(&drv_data->regs->stat, BIT_STAT_CLR); bfin_spi_cs_active(drv_data, chip); -- cgit v1.2.1 From 0beb0a6da8896da14287b1caa77596057690901a Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Tue, 15 Sep 2015 16:26:18 +0300 Subject: spi: au1550: Simplify au1550_spi_setupxfer() SPI core validates both bits_per_word and speed_hz transfer parameters and defaults to spi->bits_per_word and spi->max_speed_hz in case these per transfer parameters are not set. This can simplify a little the au1550_spi_setupxfer() as there is need to check only for valid "struct spi_transfer" pointer. Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- drivers/spi/spi-au1550.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/spi/spi-au1550.c b/drivers/spi/spi-au1550.c index f45e085c01a6..afd239d6dec1 100644 --- a/drivers/spi/spi-au1550.c +++ b/drivers/spi/spi-au1550.c @@ -233,13 +233,12 @@ static int au1550_spi_setupxfer(struct spi_device *spi, struct spi_transfer *t) unsigned bpw, hz; u32 cfg, stat; - bpw = spi->bits_per_word; - hz = spi->max_speed_hz; if (t) { - if (t->bits_per_word) - bpw = t->bits_per_word; - if (t->speed_hz) - hz = t->speed_hz; + bpw = t->bits_per_word; + hz = t->speed_hz; + } else { + bpw = spi->bits_per_word; + hz = spi->max_speed_hz; } if (!hz) -- cgit v1.2.1 From c15f6ed3a18f10cdc33f64906ab353f17a6df114 Mon Sep 17 00:00:00 2001 From: Nicolas Boichat Date: Mon, 17 Aug 2015 11:52:54 +0800 Subject: spi: bitbang: Replace spinlock by mutex chipselect (in the case of spi-gpio: spi_gpio_chipselect, which calls gpiod_set_raw_value_cansleep) can sleep, so we should not hold a spinlock while calling it from spi_bitbang_setup. This issue was introduced by this commit, which converted spi-gpio to cansleep variants: d9dda5a191 "spi: spi-gpio: Use 'cansleep' variants to access GPIO" Replacing the lock variable by a mutex fixes the issue: This is safe as all instances where the lock is used are called from contexts that can sleep. Finally, update spi-ppc4xx and and spi-s3c24xx to use mutex functions, as they directly hold the lock for similar purpose. Signed-off-by: Nicolas Boichat Signed-off-by: Mark Brown --- drivers/spi/spi-bitbang.c | 17 +++++++---------- drivers/spi/spi-ppc4xx.c | 4 ++-- drivers/spi/spi-s3c24xx.c | 4 ++-- include/linux/spi/spi_bitbang.h | 2 +- 4 files changed, 12 insertions(+), 15 deletions(-) diff --git a/drivers/spi/spi-bitbang.c b/drivers/spi/spi-bitbang.c index 840a4984d365..ef43ef507c9a 100644 --- a/drivers/spi/spi-bitbang.c +++ b/drivers/spi/spi-bitbang.c @@ -180,7 +180,6 @@ int spi_bitbang_setup(struct spi_device *spi) { struct spi_bitbang_cs *cs = spi->controller_state; struct spi_bitbang *bitbang; - unsigned long flags; bitbang = spi_master_get_devdata(spi->master); @@ -210,12 +209,12 @@ int spi_bitbang_setup(struct spi_device *spi) */ /* deselect chip (low or high) */ - spin_lock_irqsave(&bitbang->lock, flags); + mutex_lock(&bitbang->lock); if (!bitbang->busy) { bitbang->chipselect(spi, BITBANG_CS_INACTIVE); ndelay(cs->nsecs); } - spin_unlock_irqrestore(&bitbang->lock, flags); + mutex_unlock(&bitbang->lock); return 0; } @@ -255,13 +254,12 @@ static int spi_bitbang_bufs(struct spi_device *spi, struct spi_transfer *t) static int spi_bitbang_prepare_hardware(struct spi_master *spi) { struct spi_bitbang *bitbang; - unsigned long flags; bitbang = spi_master_get_devdata(spi); - spin_lock_irqsave(&bitbang->lock, flags); + mutex_lock(&bitbang->lock); bitbang->busy = 1; - spin_unlock_irqrestore(&bitbang->lock, flags); + mutex_unlock(&bitbang->lock); return 0; } @@ -378,13 +376,12 @@ static int spi_bitbang_transfer_one(struct spi_master *master, static int spi_bitbang_unprepare_hardware(struct spi_master *spi) { struct spi_bitbang *bitbang; - unsigned long flags; bitbang = spi_master_get_devdata(spi); - spin_lock_irqsave(&bitbang->lock, flags); + mutex_lock(&bitbang->lock); bitbang->busy = 0; - spin_unlock_irqrestore(&bitbang->lock, flags); + mutex_unlock(&bitbang->lock); return 0; } @@ -427,7 +424,7 @@ int spi_bitbang_start(struct spi_bitbang *bitbang) if (!master || !bitbang->chipselect) return -EINVAL; - spin_lock_init(&bitbang->lock); + mutex_init(&bitbang->lock); if (!master->mode_bits) master->mode_bits = SPI_CPOL | SPI_CPHA | bitbang->flags; diff --git a/drivers/spi/spi-ppc4xx.c b/drivers/spi/spi-ppc4xx.c index 54fb984a3e17..dd3d0a218d8b 100644 --- a/drivers/spi/spi-ppc4xx.c +++ b/drivers/spi/spi-ppc4xx.c @@ -210,12 +210,12 @@ static int spi_ppc4xx_setupxfer(struct spi_device *spi, struct spi_transfer *t) if (in_8(&hw->regs->cdm) != cdm) out_8(&hw->regs->cdm, cdm); - spin_lock(&hw->bitbang.lock); + mutex_lock(&hw->bitbang.lock); if (!hw->bitbang.busy) { hw->bitbang.chipselect(spi, BITBANG_CS_INACTIVE); /* Need to ndelay here? */ } - spin_unlock(&hw->bitbang.lock); + mutex_unlock(&hw->bitbang.lock); return 0; } diff --git a/drivers/spi/spi-s3c24xx.c b/drivers/spi/spi-s3c24xx.c index f36bc320a807..4e7d1bfed7e6 100644 --- a/drivers/spi/spi-s3c24xx.c +++ b/drivers/spi/spi-s3c24xx.c @@ -198,12 +198,12 @@ static int s3c24xx_spi_setup(struct spi_device *spi) if (ret) return ret; - spin_lock(&hw->bitbang.lock); + mutex_lock(&hw->bitbang.lock); if (!hw->bitbang.busy) { hw->bitbang.chipselect(spi, BITBANG_CS_INACTIVE); /* need to ndelay for 0.5 clocktick ? */ } - spin_unlock(&hw->bitbang.lock); + mutex_unlock(&hw->bitbang.lock); return 0; } diff --git a/include/linux/spi/spi_bitbang.h b/include/linux/spi/spi_bitbang.h index 85578d4be034..154788ed218c 100644 --- a/include/linux/spi/spi_bitbang.h +++ b/include/linux/spi/spi_bitbang.h @@ -4,7 +4,7 @@ #include struct spi_bitbang { - spinlock_t lock; + struct mutex lock; u8 busy; u8 use_dma; u8 flags; /* extra spi->mode support */ -- cgit v1.2.1 From 85c1912d44081173b9cd796955959a8201aa7a4e Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Tue, 15 Sep 2015 16:26:19 +0300 Subject: spi: mpc512x: Call mpc512x_psc_spi_transfer_setup() unconditionally SPI core validates both bits_per_word and speed_hz transfer parameters and thus the if statement here is needless as it will always call the mpc512x_psc_spi_transfer_setup(). Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- drivers/spi/spi-mpc512x-psc.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/spi/spi-mpc512x-psc.c b/drivers/spi/spi-mpc512x-psc.c index 1e75341689a6..c3ec46cd9f91 100644 --- a/drivers/spi/spi-mpc512x-psc.c +++ b/drivers/spi/spi-mpc512x-psc.c @@ -302,11 +302,9 @@ static int mpc512x_psc_spi_msg_xfer(struct spi_master *master, cs_change = 1; status = 0; list_for_each_entry(t, &m->transfers, transfer_list) { - if (t->bits_per_word || t->speed_hz) { - status = mpc512x_psc_spi_transfer_setup(spi, t); - if (status < 0) - break; - } + status = mpc512x_psc_spi_transfer_setup(spi, t); + if (status < 0) + break; if (cs_change) mpc512x_psc_spi_activate_cs(spi); -- cgit v1.2.1 From 160f8d0691659b65a97494c151c95b1287c377ae Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Tue, 15 Sep 2015 16:26:20 +0300 Subject: spi: omap-uwire: Remove needless bits_per_word and speed_hz tests SPI core validates both bits_per_word and speed_hz transfer parameters and defaults to spi->bits_per_word and spi->max_speed_hz in case these per transfer parameters are not set. This allows to remove two needless tests from uwire_txrx() and uwire_setup_transfer(). Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- drivers/spi/spi-omap-uwire.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/spi/spi-omap-uwire.c b/drivers/spi/spi-omap-uwire.c index 55576db31549..ce8dbdbce312 100644 --- a/drivers/spi/spi-omap-uwire.c +++ b/drivers/spi/spi-omap-uwire.c @@ -205,7 +205,7 @@ static void uwire_chipselect(struct spi_device *spi, int value) static int uwire_txrx(struct spi_device *spi, struct spi_transfer *t) { unsigned len = t->len; - unsigned bits = t->bits_per_word ? : spi->bits_per_word; + unsigned bits = t->bits_per_word; unsigned bytes; u16 val, w; int status = 0; @@ -344,9 +344,10 @@ static int uwire_setup_transfer(struct spi_device *spi, struct spi_transfer *t) /* assume it's already enabled */ rate = clk_get_rate(uwire->ck); - hz = spi->max_speed_hz; - if (t != NULL && t->speed_hz) + if (t != NULL) hz = t->speed_hz; + else + hz = spi->max_speed_hz; if (!hz) { pr_debug("%s: zero speed?\n", dev_name(&spi->dev)); -- cgit v1.2.1 From 76f67ea9bf27b045eacf8f1e148fd13149f51823 Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Tue, 15 Sep 2015 16:26:21 +0300 Subject: spi: omap-100k: Rely on validations done by spi core SPI core validates both bits_per_word and speed_hz transfer parameters and defaults to spi->bits_per_word and spi->max_speed_hz in case these per transfer parameters are not set. This allows to remove a few if statements around per transfer bits_per_word and speed_hz tests as they evaluate always to true. Also defaulting word_len to 8 is needless since spi_setup() has already made sure spi->bits_per_word is 8 in case it is not set. Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- drivers/spi/spi-omap-100k.c | 26 ++++++++------------------ 1 file changed, 8 insertions(+), 18 deletions(-) diff --git a/drivers/spi/spi-omap-100k.c b/drivers/spi/spi-omap-100k.c index 35b332dacb13..76a8425be227 100644 --- a/drivers/spi/spi-omap-100k.c +++ b/drivers/spi/spi-omap-100k.c @@ -244,12 +244,12 @@ static int omap1_spi100k_setup_transfer(struct spi_device *spi, { struct omap1_spi100k *spi100k = spi_master_get_devdata(spi->master); struct omap1_spi100k_cs *cs = spi->controller_state; - u8 word_len = spi->bits_per_word; + u8 word_len; - if (t != NULL && t->bits_per_word) + if (t != NULL) word_len = t->bits_per_word; - if (!word_len) - word_len = 8; + else + word_len = spi->bits_per_word; if (spi->bits_per_word > 32) return -EINVAL; @@ -302,7 +302,6 @@ static int omap1_spi100k_transfer_one_message(struct spi_master *master, struct spi_device *spi = m->spi; struct spi_transfer *t = NULL; int cs_active = 0; - int par_override = 0; int status = 0; list_for_each_entry(t, &m->transfers, transfer_list) { @@ -310,14 +309,9 @@ static int omap1_spi100k_transfer_one_message(struct spi_master *master, status = -EINVAL; break; } - if (par_override || t->speed_hz || t->bits_per_word) { - par_override = 1; - status = omap1_spi100k_setup_transfer(spi, t); - if (status < 0) - break; - if (!t->speed_hz && !t->bits_per_word) - par_override = 0; - } + status = omap1_spi100k_setup_transfer(spi, t); + if (status < 0) + break; if (!cs_active) { omap1_spi100k_force_cs(spi100k, 1); @@ -347,11 +341,7 @@ static int omap1_spi100k_transfer_one_message(struct spi_master *master, } } - /* Restore defaults if they were overriden */ - if (par_override) { - par_override = 0; - status = omap1_spi100k_setup_transfer(spi, NULL); - } + status = omap1_spi100k_setup_transfer(spi, NULL); if (cs_active) omap1_spi100k_force_cs(spi100k, 0); -- cgit v1.2.1 From 0ed36990a93b23c4873c77cdc1423429e40ed469 Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Tue, 15 Sep 2015 16:26:23 +0300 Subject: spi: dw: Remove needless if statements SPI core validates both bits_per_word and speed_hz transfer parameters and defaults to spi->bits_per_word and spi->max_speed_hz in case these per transfer parameters are not set. This allows to remove related if statements as they evaluate always to true and reduce indentation. Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- drivers/spi/spi-dw.c | 41 ++++++++++++++++++----------------------- 1 file changed, 18 insertions(+), 23 deletions(-) diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c index 4fbfcdc5cb24..2b5d736465c9 100644 --- a/drivers/spi/spi-dw.c +++ b/drivers/spi/spi-dw.c @@ -309,34 +309,29 @@ static int dw_spi_transfer_one(struct spi_master *master, cr0 = chip->cr0; /* Handle per transfer options for bpw and speed */ - if (transfer->speed_hz) { - speed = chip->speed_hz; + speed = chip->speed_hz; + if ((transfer->speed_hz != speed) || !chip->clk_div) { + speed = transfer->speed_hz; - if ((transfer->speed_hz != speed) || !chip->clk_div) { - speed = transfer->speed_hz; + /* clk_div doesn't support odd number */ + clk_div = (dws->max_freq / speed + 1) & 0xfffe; - /* clk_div doesn't support odd number */ - clk_div = (dws->max_freq / speed + 1) & 0xfffe; + chip->speed_hz = speed; + chip->clk_div = clk_div; - chip->speed_hz = speed; - chip->clk_div = clk_div; - - spi_set_clk(dws, chip->clk_div); - } + spi_set_clk(dws, chip->clk_div); } - if (transfer->bits_per_word) { - if (transfer->bits_per_word == 8) { - dws->n_bytes = 1; - dws->dma_width = 1; - } else if (transfer->bits_per_word == 16) { - dws->n_bytes = 2; - dws->dma_width = 2; - } - cr0 = (transfer->bits_per_word - 1) - | (chip->type << SPI_FRF_OFFSET) - | (spi->mode << SPI_MODE_OFFSET) - | (chip->tmode << SPI_TMOD_OFFSET); + if (transfer->bits_per_word == 8) { + dws->n_bytes = 1; + dws->dma_width = 1; + } else if (transfer->bits_per_word == 16) { + dws->n_bytes = 2; + dws->dma_width = 2; } + cr0 = (transfer->bits_per_word - 1) + | (chip->type << SPI_FRF_OFFSET) + | (spi->mode << SPI_MODE_OFFSET) + | (chip->tmode << SPI_TMOD_OFFSET); /* * Adjust transfer mode if necessary. Requires platform dependent -- cgit v1.2.1 From 55f9a0706f60df4639010c91d6f28ce6b2351179 Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Tue, 15 Sep 2015 16:26:24 +0300 Subject: spi: dw: Remove test for non-zero spi->max_speed_hz Test for non-zero spi->max_speed_hz in dw_spi_setup() looks needless as spi_setup() defaults to master->max_speed_hz in case it is not set. This drivers sets the master->max_speed_hz based on max_freq data passed to it via dw_spi_add_host() call. I suppose things have already fallen apart if dw_spi_mmio_probe() or spi_pci_probe() ever passes zero max_freq. Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- drivers/spi/spi-dw.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c index 2b5d736465c9..1153d36ec8a6 100644 --- a/drivers/spi/spi-dw.c +++ b/drivers/spi/spi-dw.c @@ -448,11 +448,6 @@ static int dw_spi_setup(struct spi_device *spi) } chip->bits_per_word = spi->bits_per_word; - if (!spi->max_speed_hz) { - dev_err(&spi->dev, "No max speed HZ parameter\n"); - return -EINVAL; - } - chip->tmode = 0; /* Tx & Rx */ /* Default SPI mode is SCPOL = 0, SCPH = 0 */ chip->cr0 = (chip->bits_per_word - 1) -- cgit v1.2.1 From fa14e47fc409390f1be92da679a365faef187937 Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Tue, 15 Sep 2015 16:26:25 +0300 Subject: spi: spi-fsl-dspi: Remove duplicated register write SPI core makes sure that transfer speed is always set so code here writes the same register with the same value twice. Code has been doing this from the beginning. This looks to me some sort of copy paste error so I'm removing the second write. If this is not the case we can bring it back with a comment. Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- drivers/spi/spi-fsl-dspi.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c index 86bcdd68c1fe..59a11437db70 100644 --- a/drivers/spi/spi-fsl-dspi.c +++ b/drivers/spi/spi-fsl-dspi.c @@ -409,9 +409,6 @@ static int dspi_transfer_one_message(struct spi_master *master, SPI_MCR_CLR_TXF | SPI_MCR_CLR_RXF); regmap_write(dspi->regmap, SPI_CTAR(dspi->cs), dspi->cur_chip->ctar_val); - if (transfer->speed_hz) - regmap_write(dspi->regmap, SPI_CTAR(dspi->cs), - dspi->cur_chip->ctar_val); trans_mode = dspi->devtype_data->trans_mode; switch (trans_mode) { -- cgit v1.2.1 From 4f1474b3b786305d77c93c232f65d40018043e9f Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Tue, 15 Sep 2015 16:26:26 +0300 Subject: spi: pxa2xx: Remove two variables from struct chip_data There is no need to carry spi->max_speed_hz and spi->bits_per_word from setup() in "struct chip_data" since pump_transfers() will anyway take the transfer parameters from "struct spi_transfer". This is since SPI core validates both bits_per_word and speed_hz transfer parameters and defaults to spi->bits_per_word and spi->max_speed_hz in case these per transfer parameters are not set. Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- drivers/spi/spi-pxa2xx.c | 12 ++---------- drivers/spi/spi-pxa2xx.h | 2 -- 2 files changed, 2 insertions(+), 12 deletions(-) diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index fdd791977041..dc6f3f1ceb15 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -921,14 +921,8 @@ static void pump_transfers(unsigned long data) cr0 = chip->cr0; if (transfer->speed_hz || transfer->bits_per_word) { - bits = chip->bits_per_word; - speed = chip->speed_hz; - - if (transfer->speed_hz) - speed = transfer->speed_hz; - - if (transfer->bits_per_word) - bits = transfer->bits_per_word; + bits = transfer->bits_per_word; + speed = transfer->speed_hz; clk_div = pxa2xx_ssp_get_clk_div(drv_data, chip, speed); @@ -1200,7 +1194,6 @@ static int setup(struct spi_device *spi) } clk_div = pxa2xx_ssp_get_clk_div(drv_data, chip, spi->max_speed_hz); - chip->speed_hz = spi->max_speed_hz; chip->cr0 = pxa2xx_configure_sscr0(drv_data, clk_div, spi->bits_per_word); @@ -1251,7 +1244,6 @@ static int setup(struct spi_device *spi) chip->read = u32_reader; chip->write = u32_writer; } - chip->bits_per_word = spi->bits_per_word; spi_set_ctldata(spi, chip); diff --git a/drivers/spi/spi-pxa2xx.h b/drivers/spi/spi-pxa2xx.h index 0a9b6390a817..0875e985b90d 100644 --- a/drivers/spi/spi-pxa2xx.h +++ b/drivers/spi/spi-pxa2xx.h @@ -98,8 +98,6 @@ struct chip_data { u16 lpss_rx_threshold; u16 lpss_tx_threshold; u8 enable_dma; - u8 bits_per_word; - u32 speed_hz; union { int gpio_cs; unsigned int frm; -- cgit v1.2.1 From 196b0e2cf2373f43d7b0e8c1a63e9d528c06e1df Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Tue, 15 Sep 2015 16:26:27 +0300 Subject: spi: pxa2xx: Remove if statement that is always true in pump_transfers() This is continuation to previous commit by separating unindentation from variable removal done in previous commit. As said SPI core have validated both the speed_hz and bits_per_word and the if statement here evaluates always to true. Remove the test and unindent the code block accordingly. While at it remove also needless "cr0 = chip->cr0" as cr0 will be overwritten anyway and fix block comment style. Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- drivers/spi/spi-pxa2xx.c | 76 +++++++++++++++++++++++------------------------- 1 file changed, 37 insertions(+), 39 deletions(-) diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index dc6f3f1ceb15..ebafd537b59f 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -918,47 +918,45 @@ static void pump_transfers(unsigned long data) drv_data->read = drv_data->rx ? chip->read : null_reader; /* Change speed and bit per word on a per transfer */ - cr0 = chip->cr0; - if (transfer->speed_hz || transfer->bits_per_word) { - - bits = transfer->bits_per_word; - speed = transfer->speed_hz; - - clk_div = pxa2xx_ssp_get_clk_div(drv_data, chip, speed); - - if (bits <= 8) { - drv_data->n_bytes = 1; - drv_data->read = drv_data->read != null_reader ? - u8_reader : null_reader; - drv_data->write = drv_data->write != null_writer ? - u8_writer : null_writer; - } else if (bits <= 16) { - drv_data->n_bytes = 2; - drv_data->read = drv_data->read != null_reader ? - u16_reader : null_reader; - drv_data->write = drv_data->write != null_writer ? - u16_writer : null_writer; - } else if (bits <= 32) { - drv_data->n_bytes = 4; - drv_data->read = drv_data->read != null_reader ? - u32_reader : null_reader; - drv_data->write = drv_data->write != null_writer ? - u32_writer : null_writer; - } - /* if bits/word is changed in dma mode, then must check the - * thresholds and burst also */ - if (chip->enable_dma) { - if (pxa2xx_spi_set_dma_burst_and_threshold(chip, - message->spi, - bits, &dma_burst, - &dma_thresh)) - dev_warn_ratelimited(&message->spi->dev, - "pump_transfers: DMA burst size reduced to match bits_per_word\n"); - } - - cr0 = pxa2xx_configure_sscr0(drv_data, clk_div, bits); + bits = transfer->bits_per_word; + speed = transfer->speed_hz; + + clk_div = pxa2xx_ssp_get_clk_div(drv_data, chip, speed); + + if (bits <= 8) { + drv_data->n_bytes = 1; + drv_data->read = drv_data->read != null_reader ? + u8_reader : null_reader; + drv_data->write = drv_data->write != null_writer ? + u8_writer : null_writer; + } else if (bits <= 16) { + drv_data->n_bytes = 2; + drv_data->read = drv_data->read != null_reader ? + u16_reader : null_reader; + drv_data->write = drv_data->write != null_writer ? + u16_writer : null_writer; + } else if (bits <= 32) { + drv_data->n_bytes = 4; + drv_data->read = drv_data->read != null_reader ? + u32_reader : null_reader; + drv_data->write = drv_data->write != null_writer ? + u32_writer : null_writer; + } + /* + * if bits/word is changed in dma mode, then must check the + * thresholds and burst also + */ + if (chip->enable_dma) { + if (pxa2xx_spi_set_dma_burst_and_threshold(chip, + message->spi, + bits, &dma_burst, + &dma_thresh)) + dev_warn_ratelimited(&message->spi->dev, + "pump_transfers: DMA burst size reduced to match bits_per_word\n"); } + cr0 = pxa2xx_configure_sscr0(drv_data, clk_div, bits); + message->state = RUNNING_STATE; drv_data->dma_mapped = 0; -- cgit v1.2.1 From b69d42b5c44bcfc1c73fe185d4644487f1bd3193 Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Tue, 15 Sep 2015 16:26:28 +0300 Subject: spi: pxa2xx: Remove cr0 variable from struct chip_data There hasn't been need to carry chip->cr0 after SPI core started to validate speed_hz and bits_per_word transfer parameters. That effectively caused that pump_transfers() always recalculated it and practically chip->cr0 is used locally in setup() for debug prints only. Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- drivers/spi/spi-pxa2xx.c | 10 ++++------ drivers/spi/spi-pxa2xx.h | 1 - 2 files changed, 4 insertions(+), 7 deletions(-) diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index ebafd537b59f..a25bc1d4bf7f 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -1101,6 +1101,7 @@ static int setup(struct spi_device *spi) struct driver_data *drv_data = spi_master_get_devdata(spi->master); unsigned int clk_div; uint tx_thres, tx_hi_thres, rx_thres; + u32 cr0; switch (drv_data->ssp_type) { case QUARK_X1000_SSP: @@ -1193,8 +1194,6 @@ static int setup(struct spi_device *spi) clk_div = pxa2xx_ssp_get_clk_div(drv_data, chip, spi->max_speed_hz); - chip->cr0 = pxa2xx_configure_sscr0(drv_data, clk_div, - spi->bits_per_word); switch (drv_data->ssp_type) { case QUARK_X1000_SSP: chip->threshold = (QUARK_X1000_SSCR1_RxTresh(rx_thres) @@ -1216,15 +1215,16 @@ static int setup(struct spi_device *spi) chip->cr1 |= SSCR1_LBM; /* NOTE: PXA25x_SSP _could_ use external clocking ... */ + cr0 = pxa2xx_configure_sscr0(drv_data, clk_div, spi->bits_per_word); if (!pxa25x_ssp_comp(drv_data)) dev_dbg(&spi->dev, "%ld Hz actual, %s\n", drv_data->max_clk_rate - / (1 + ((chip->cr0 & SSCR0_SCR(0xfff)) >> 8)), + / (1 + ((cr0 & SSCR0_SCR(0xfff)) >> 8)), chip->enable_dma ? "DMA" : "PIO"); else dev_dbg(&spi->dev, "%ld Hz actual, %s\n", drv_data->max_clk_rate / 2 - / (1 + ((chip->cr0 & SSCR0_SCR(0x0ff)) >> 8)), + / (1 + ((cr0 & SSCR0_SCR(0x0ff)) >> 8)), chip->enable_dma ? "DMA" : "PIO"); if (spi->bits_per_word <= 8) { @@ -1236,8 +1236,6 @@ static int setup(struct spi_device *spi) chip->read = u16_reader; chip->write = u16_writer; } else if (spi->bits_per_word <= 32) { - if (!is_quark_x1000_ssp(drv_data)) - chip->cr0 |= SSCR0_EDSS; chip->n_bytes = 4; chip->read = u32_reader; chip->write = u32_writer; diff --git a/drivers/spi/spi-pxa2xx.h b/drivers/spi/spi-pxa2xx.h index 0875e985b90d..b91bda26bfa8 100644 --- a/drivers/spi/spi-pxa2xx.h +++ b/drivers/spi/spi-pxa2xx.h @@ -86,7 +86,6 @@ struct driver_data { }; struct chip_data { - u32 cr0; u32 cr1; u32 dds_rate; u32 psp; -- cgit v1.2.1 From 6b7bc0618ff1a333d2265131b124e966335d5dee Mon Sep 17 00:00:00 2001 From: Martin Sperl Date: Mon, 22 Jun 2015 13:02:04 +0000 Subject: spi: add transfer histogram statistics via sysfs report transfer sizes as a histogram via the following files: /sys/class/spi_master/spi*/statistics/transfer_bytes_histo_* /sys/class/spi_master/spi*/spi*.*/statistics/transfer_bytes_histo_* Signed-off-by: Martin Sperl Signed-off-by: Mark Brown --- drivers/spi/spi.c | 61 +++++++++++++++++++++++++++++++++++++++++++++++++ include/linux/spi/spi.h | 4 ++++ 2 files changed, 65 insertions(+) diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 3abb3903f2ad..73face0f6b9c 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -123,6 +123,28 @@ SPI_STATISTICS_SHOW(bytes, "%llu"); SPI_STATISTICS_SHOW(bytes_rx, "%llu"); SPI_STATISTICS_SHOW(bytes_tx, "%llu"); +#define SPI_STATISTICS_TRANSFER_BYTES_HISTO(index, number) \ + SPI_STATISTICS_SHOW_NAME(transfer_bytes_histo##index, \ + "transfer_bytes_histo_" number, \ + transfer_bytes_histo[index], "%lu") +SPI_STATISTICS_TRANSFER_BYTES_HISTO(0, "0-1"); +SPI_STATISTICS_TRANSFER_BYTES_HISTO(1, "2-3"); +SPI_STATISTICS_TRANSFER_BYTES_HISTO(2, "4-7"); +SPI_STATISTICS_TRANSFER_BYTES_HISTO(3, "8-15"); +SPI_STATISTICS_TRANSFER_BYTES_HISTO(4, "16-31"); +SPI_STATISTICS_TRANSFER_BYTES_HISTO(5, "32-63"); +SPI_STATISTICS_TRANSFER_BYTES_HISTO(6, "64-127"); +SPI_STATISTICS_TRANSFER_BYTES_HISTO(7, "128-255"); +SPI_STATISTICS_TRANSFER_BYTES_HISTO(8, "256-511"); +SPI_STATISTICS_TRANSFER_BYTES_HISTO(9, "512-1023"); +SPI_STATISTICS_TRANSFER_BYTES_HISTO(10, "1024-2047"); +SPI_STATISTICS_TRANSFER_BYTES_HISTO(11, "2048-4095"); +SPI_STATISTICS_TRANSFER_BYTES_HISTO(12, "4096-8191"); +SPI_STATISTICS_TRANSFER_BYTES_HISTO(13, "8192-16383"); +SPI_STATISTICS_TRANSFER_BYTES_HISTO(14, "16384-32767"); +SPI_STATISTICS_TRANSFER_BYTES_HISTO(15, "32768-65535"); +SPI_STATISTICS_TRANSFER_BYTES_HISTO(16, "65536+"); + static struct attribute *spi_dev_attrs[] = { &dev_attr_modalias.attr, NULL, @@ -143,6 +165,23 @@ static struct attribute *spi_device_statistics_attrs[] = { &dev_attr_spi_device_bytes.attr, &dev_attr_spi_device_bytes_rx.attr, &dev_attr_spi_device_bytes_tx.attr, + &dev_attr_spi_device_transfer_bytes_histo0.attr, + &dev_attr_spi_device_transfer_bytes_histo1.attr, + &dev_attr_spi_device_transfer_bytes_histo2.attr, + &dev_attr_spi_device_transfer_bytes_histo3.attr, + &dev_attr_spi_device_transfer_bytes_histo4.attr, + &dev_attr_spi_device_transfer_bytes_histo5.attr, + &dev_attr_spi_device_transfer_bytes_histo6.attr, + &dev_attr_spi_device_transfer_bytes_histo7.attr, + &dev_attr_spi_device_transfer_bytes_histo8.attr, + &dev_attr_spi_device_transfer_bytes_histo9.attr, + &dev_attr_spi_device_transfer_bytes_histo10.attr, + &dev_attr_spi_device_transfer_bytes_histo11.attr, + &dev_attr_spi_device_transfer_bytes_histo12.attr, + &dev_attr_spi_device_transfer_bytes_histo13.attr, + &dev_attr_spi_device_transfer_bytes_histo14.attr, + &dev_attr_spi_device_transfer_bytes_histo15.attr, + &dev_attr_spi_device_transfer_bytes_histo16.attr, NULL, }; @@ -168,6 +207,23 @@ static struct attribute *spi_master_statistics_attrs[] = { &dev_attr_spi_master_bytes.attr, &dev_attr_spi_master_bytes_rx.attr, &dev_attr_spi_master_bytes_tx.attr, + &dev_attr_spi_master_transfer_bytes_histo0.attr, + &dev_attr_spi_master_transfer_bytes_histo1.attr, + &dev_attr_spi_master_transfer_bytes_histo2.attr, + &dev_attr_spi_master_transfer_bytes_histo3.attr, + &dev_attr_spi_master_transfer_bytes_histo4.attr, + &dev_attr_spi_master_transfer_bytes_histo5.attr, + &dev_attr_spi_master_transfer_bytes_histo6.attr, + &dev_attr_spi_master_transfer_bytes_histo7.attr, + &dev_attr_spi_master_transfer_bytes_histo8.attr, + &dev_attr_spi_master_transfer_bytes_histo9.attr, + &dev_attr_spi_master_transfer_bytes_histo10.attr, + &dev_attr_spi_master_transfer_bytes_histo11.attr, + &dev_attr_spi_master_transfer_bytes_histo12.attr, + &dev_attr_spi_master_transfer_bytes_histo13.attr, + &dev_attr_spi_master_transfer_bytes_histo14.attr, + &dev_attr_spi_master_transfer_bytes_histo15.attr, + &dev_attr_spi_master_transfer_bytes_histo16.attr, NULL, }; @@ -186,10 +242,15 @@ void spi_statistics_add_transfer_stats(struct spi_statistics *stats, struct spi_master *master) { unsigned long flags; + int l2len = min(fls(xfer->len), SPI_STATISTICS_HISTO_SIZE) - 1; + + if (l2len < 0) + l2len = 0; spin_lock_irqsave(&stats->lock, flags); stats->transfers++; + stats->transfer_bytes_histo[l2len]++; stats->bytes += xfer->len; if ((xfer->tx_buf) && diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index 269e8afd3e2a..5b6fdc48eba7 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -51,6 +51,8 @@ extern struct bus_type spi_bus_type; * @bytes_tx: number of bytes sent to device * @bytes_rx: number of bytes received from device * + * @transfer_bytes_histo: + * transfer bytes histogramm */ struct spi_statistics { spinlock_t lock; /* lock for the whole structure */ @@ -68,6 +70,8 @@ struct spi_statistics { unsigned long long bytes_rx; unsigned long long bytes_tx; +#define SPI_STATISTICS_HISTO_SIZE 17 + unsigned long transfer_bytes_histo[SPI_STATISTICS_HISTO_SIZE]; }; void spi_statistics_add_transfer_stats(struct spi_statistics *stats, -- cgit v1.2.1 From 0eca7cf2696506006463b9d67bb6110c82d3e064 Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Fri, 25 Sep 2015 10:27:17 +0300 Subject: spi: pxa2xx: Set the max_speed_hz of the master Carry input clock of the controller in max_speed_hz of struct spi_master instead of in own driver data. They mean the same thing and more over now the max_speed_hz is not even set here. As an added bonus this allows SPI core to validate that transfer speed is not beyond the maximum input clock. This is not a problem in spi-pxa2xx as the driver doesn't use transfer speed parameter directly but via input clock divider calculation which will top at divide by one. However it's better to validate speed before passing it here. Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- drivers/spi/spi-pxa2xx.c | 12 ++++++------ drivers/spi/spi-pxa2xx.h | 3 --- 2 files changed, 6 insertions(+), 9 deletions(-) diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index a25bc1d4bf7f..0e075db589ca 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -802,7 +802,7 @@ static unsigned int quark_x1000_get_clk_div(int rate, u32 *dds) static unsigned int ssp_get_clk_div(struct driver_data *drv_data, int rate) { - unsigned long ssp_clk = drv_data->max_clk_rate; + unsigned long ssp_clk = drv_data->master->max_speed_hz; const struct ssp_device *ssp = drv_data->ssp; rate = min_t(int, ssp_clk, rate); @@ -1217,13 +1217,13 @@ static int setup(struct spi_device *spi) /* NOTE: PXA25x_SSP _could_ use external clocking ... */ cr0 = pxa2xx_configure_sscr0(drv_data, clk_div, spi->bits_per_word); if (!pxa25x_ssp_comp(drv_data)) - dev_dbg(&spi->dev, "%ld Hz actual, %s\n", - drv_data->max_clk_rate + dev_dbg(&spi->dev, "%u Hz actual, %s\n", + drv_data->master->max_speed_hz / (1 + ((cr0 & SSCR0_SCR(0xfff)) >> 8)), chip->enable_dma ? "DMA" : "PIO"); else - dev_dbg(&spi->dev, "%ld Hz actual, %s\n", - drv_data->max_clk_rate / 2 + dev_dbg(&spi->dev, "%u Hz actual, %s\n", + drv_data->master->max_speed_hz / 2 / (1 + ((cr0 & SSCR0_SCR(0x0ff)) >> 8)), chip->enable_dma ? "DMA" : "PIO"); @@ -1473,7 +1473,7 @@ static int pxa2xx_spi_probe(struct platform_device *pdev) /* Enable SOC clock */ clk_prepare_enable(ssp->clk); - drv_data->max_clk_rate = clk_get_rate(ssp->clk); + master->max_speed_hz = clk_get_rate(ssp->clk); /* Load default SSP configuration */ pxa2xx_spi_write(drv_data, SSCR0, 0); diff --git a/drivers/spi/spi-pxa2xx.h b/drivers/spi/spi-pxa2xx.h index b91bda26bfa8..fd7a7bc91b9f 100644 --- a/drivers/spi/spi-pxa2xx.h +++ b/drivers/spi/spi-pxa2xx.h @@ -46,9 +46,6 @@ struct driver_data { u32 clear_sr; u32 mask_sr; - /* Maximun clock rate */ - unsigned long max_clk_rate; - /* Message Transfer pump */ struct tasklet_struct pump_transfers; -- cgit v1.2.1 From b9f6940a437dcb8481df16b175359e126cf7bc33 Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Fri, 25 Sep 2015 10:27:18 +0300 Subject: spi: pxa2xx: Use ACPI_COMPANION() instead of acpi_bus_get_device() Get pointer to the struct acpi_device by using ACPI_COMPANION() macro. This is more efficient than using ACPI_HANDLE() and acpi_bus_get_device(). Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- drivers/spi/spi-pxa2xx.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index 0e075db589ca..aed9aabec14f 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -1312,8 +1312,8 @@ pxa2xx_spi_acpi_get_pdata(struct platform_device *pdev) const struct pci_device_id *pcidev_id = NULL; int devid, type; - if (!ACPI_HANDLE(&pdev->dev) || - acpi_bus_get_device(ACPI_HANDLE(&pdev->dev), &adev)) + adev = ACPI_COMPANION(&pdev->dev); + if (!adev) return NULL; if (dev_is_pci(pdev->dev.parent)) -- cgit v1.2.1 From e8646580cc9a6ae24ab3d05f90e71334f50cdedf Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Fri, 25 Sep 2015 09:03:01 +0300 Subject: spi: atmel: Remove needless bits_per_word and speed_hz tests SPI core validates both bits_per_word and speed_hz transfer parameters and defaults to spi->bits_per_word and spi->max_speed_hz in case these per transfer parameters are not set. This makes possible to remove two if statements and remove one code block that is never executed. Signed-off-by: Jarkko Nikula Acked-by: Nicolas Ferre Signed-off-by: Mark Brown --- drivers/spi/spi-atmel.c | 21 ++++++--------------- 1 file changed, 6 insertions(+), 15 deletions(-) diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c index bf9ed380bb1c..1cc1f1e0d17f 100644 --- a/drivers/spi/spi-atmel.c +++ b/drivers/spi/spi-atmel.c @@ -871,14 +871,7 @@ static int atmel_spi_set_xfer_speed(struct atmel_spi *as, * Calculate the lowest divider that satisfies the * constraint, assuming div32/fdiv/mbz == 0. */ - if (xfer->speed_hz) - scbr = DIV_ROUND_UP(bus_hz, xfer->speed_hz); - else - /* - * This can happend if max_speed is null. - * In this case, we set the lowest possible speed - */ - scbr = 0xff; + scbr = DIV_ROUND_UP(bus_hz, xfer->speed_hz); /* * If the resulting divider doesn't fit into the @@ -1300,14 +1293,12 @@ static int atmel_spi_one_transfer(struct spi_master *master, return -EINVAL; } - if (xfer->bits_per_word) { - asd = spi->controller_state; - bits = (asd->csr >> 4) & 0xf; - if (bits != xfer->bits_per_word - 8) { - dev_dbg(&spi->dev, + asd = spi->controller_state; + bits = (asd->csr >> 4) & 0xf; + if (bits != xfer->bits_per_word - 8) { + dev_dbg(&spi->dev, "you can't yet change bits_per_word in transfers\n"); - return -ENOPROTOOPT; - } + return -ENOPROTOOPT; } /* -- cgit v1.2.1 From b7a2a1c0b67283442a06fcc679cba0683914f794 Mon Sep 17 00:00:00 2001 From: Heiner Kallweit Date: Sun, 27 Sep 2015 18:47:35 +0200 Subject: spi: ath79: simplify iomem resource mapping Simplify the code by switching from devm_ioremap to devm_ioremap_resource. Checking the result of platform_get_resource is not needed as devm_ioremap_resource checks the provided resource argument for NULL. Signed-off-by: Heiner Kallweit Signed-off-by: Mark Brown --- drivers/spi/spi-ath79.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) diff --git a/drivers/spi/spi-ath79.c b/drivers/spi/spi-ath79.c index bf1f9b32c597..6165bf21d427 100644 --- a/drivers/spi/spi-ath79.c +++ b/drivers/spi/spi-ath79.c @@ -240,14 +240,9 @@ static int ath79_spi_probe(struct platform_device *pdev) sp->bitbang.flags = SPI_CS_HIGH; r = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (r == NULL) { - ret = -ENOENT; - goto err_put_master; - } - - sp->base = devm_ioremap(&pdev->dev, r->start, resource_size(r)); - if (!sp->base) { - ret = -ENXIO; + sp->base = devm_ioremap_resource(&pdev->dev, r); + if (IS_ERR(sp->base)) { + ret = PTR_ERR(sp->base); goto err_put_master; } -- cgit v1.2.1 From 289de5541ca6aec56308c04b76c1bb59f00b1f09 Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Thu, 1 Oct 2015 18:23:18 +0300 Subject: spi: pxa2xx: Remove empty function pxa2xx_spi_dma_resume() This was leftover from the legacy pxa2xx DMA implementation and not needed anymore so remove it. Signed-off-by: Mika Westerberg Signed-off-by: Mark Brown --- drivers/spi/spi-pxa2xx-dma.c | 4 ---- drivers/spi/spi-pxa2xx.c | 2 -- drivers/spi/spi-pxa2xx.h | 2 -- 3 files changed, 8 deletions(-) diff --git a/drivers/spi/spi-pxa2xx-dma.c b/drivers/spi/spi-pxa2xx-dma.c index 66a173939be8..bd8b369a343c 100644 --- a/drivers/spi/spi-pxa2xx-dma.c +++ b/drivers/spi/spi-pxa2xx-dma.c @@ -344,10 +344,6 @@ void pxa2xx_spi_dma_release(struct driver_data *drv_data) } } -void pxa2xx_spi_dma_resume(struct driver_data *drv_data) -{ -} - int pxa2xx_spi_set_dma_burst_and_threshold(struct chip_data *chip, struct spi_device *spi, u8 bits_per_word, u32 *burst_code, diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index aed9aabec14f..22b473ebf607 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -1598,8 +1598,6 @@ static int pxa2xx_spi_resume(struct device *dev) struct ssp_device *ssp = drv_data->ssp; int status = 0; - pxa2xx_spi_dma_resume(drv_data); - /* Enable the SSP clock */ if (!pm_runtime_suspended(dev)) clk_prepare_enable(ssp->clk); diff --git a/drivers/spi/spi-pxa2xx.h b/drivers/spi/spi-pxa2xx.h index fd7a7bc91b9f..514cf971707c 100644 --- a/drivers/spi/spi-pxa2xx.h +++ b/drivers/spi/spi-pxa2xx.h @@ -169,7 +169,6 @@ extern int pxa2xx_spi_dma_prepare(struct driver_data *drv_data, u32 dma_burst); extern void pxa2xx_spi_dma_start(struct driver_data *drv_data); extern int pxa2xx_spi_dma_setup(struct driver_data *drv_data); extern void pxa2xx_spi_dma_release(struct driver_data *drv_data); -extern void pxa2xx_spi_dma_resume(struct driver_data *drv_data); extern int pxa2xx_spi_set_dma_burst_and_threshold(struct chip_data *chip, struct spi_device *spi, u8 bits_per_word, @@ -190,7 +189,6 @@ static inline int pxa2xx_spi_dma_setup(struct driver_data *drv_data) return 0; } static inline void pxa2xx_spi_dma_release(struct driver_data *drv_data) {} -static inline void pxa2xx_spi_dma_resume(struct driver_data *drv_data) {} static inline int pxa2xx_spi_set_dma_burst_and_threshold(struct chip_data *chip, struct spi_device *spi, u8 bits_per_word, -- cgit v1.2.1 From 54bf4505bd64bdb61e343fc007f2f21899172931 Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Fri, 2 Oct 2015 16:52:27 +0300 Subject: spi: pxa2xx: Remove unused psp member variable from struct chip_data It is not used since commit 8d94cc50aa4f ("[PATCH] spi: stabilize PIO mode transfers on PXA2xx systems"). Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- drivers/spi/spi-pxa2xx.h | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/spi/spi-pxa2xx.h b/drivers/spi/spi-pxa2xx.h index 0a9b6390a817..99c4d8a0a1d0 100644 --- a/drivers/spi/spi-pxa2xx.h +++ b/drivers/spi/spi-pxa2xx.h @@ -89,7 +89,6 @@ struct chip_data { u32 cr0; u32 cr1; u32 dds_rate; - u32 psp; u32 timeout; u8 n_bytes; u32 dma_burst_size; -- cgit v1.2.1 From e30d8f23926b70a003d9fb16b49bfe23f01269da Mon Sep 17 00:00:00 2001 From: Heiner Kallweit Date: Tue, 29 Sep 2015 23:09:33 +0200 Subject: spi: bitbang: remove unneeded check Remove an unneeded check. The SPI core (__spi_validate) takes care that these fields are always populated. Signed-off-by: Heiner Kallweit Signed-off-by: Mark Brown --- drivers/spi/spi-bitbang.c | 18 ++++-------------- 1 file changed, 4 insertions(+), 14 deletions(-) diff --git a/drivers/spi/spi-bitbang.c b/drivers/spi/spi-bitbang.c index ef43ef507c9a..ad3168dc45e7 100644 --- a/drivers/spi/spi-bitbang.c +++ b/drivers/spi/spi-bitbang.c @@ -272,7 +272,6 @@ static int spi_bitbang_transfer_one(struct spi_master *master, struct spi_transfer *t = NULL; unsigned cs_change; int status; - int do_setup = -1; struct spi_device *spi = m->spi; bitbang = spi_master_get_devdata(master); @@ -288,19 +287,10 @@ static int spi_bitbang_transfer_one(struct spi_master *master, list_for_each_entry(t, &m->transfers, transfer_list) { - /* override speed or wordsize? */ - if (t->speed_hz || t->bits_per_word) - do_setup = 1; - - /* init (-1) or override (1) transfer params */ - if (do_setup != 0) { - if (bitbang->setup_transfer) { - status = bitbang->setup_transfer(spi, t); - if (status < 0) - break; - } - if (do_setup == -1) - do_setup = 0; + if (bitbang->setup_transfer) { + status = bitbang->setup_transfer(spi, t); + if (status < 0) + break; } /* set up default clock polarity, and activate chip; -- cgit v1.2.1 From 0037686596832572bbca05ab168d9884d7d704c1 Mon Sep 17 00:00:00 2001 From: Heiner Kallweit Date: Tue, 29 Sep 2015 23:15:53 +0200 Subject: spi: bitbang: switch to the generic implementation of transfer_one_message Change the bitbang driver to use the generic implementation of transfer_one_message. This simplifies the bitbang driver code and provides benefits like the statistics in the generic implementation. Successfully tested on a IMX6-based system (spi-imx) and on a MIPS-based router (OpenWRT with spi-ath79). Signed-off-by: Heiner Kallweit Signed-off-by: Mark Brown --- drivers/spi/spi-bitbang.c | 125 +++++++++++++--------------------------------- 1 file changed, 36 insertions(+), 89 deletions(-) diff --git a/drivers/spi/spi-bitbang.c b/drivers/spi/spi-bitbang.c index ad3168dc45e7..3aa9e6e3dac8 100644 --- a/drivers/spi/spi-bitbang.c +++ b/drivers/spi/spi-bitbang.c @@ -24,6 +24,8 @@ #include #include +#define SPI_BITBANG_CS_DELAY 100 + /*----------------------------------------------------------------------*/ @@ -265,100 +267,28 @@ static int spi_bitbang_prepare_hardware(struct spi_master *spi) } static int spi_bitbang_transfer_one(struct spi_master *master, - struct spi_message *m) + struct spi_device *spi, + struct spi_transfer *transfer) { - struct spi_bitbang *bitbang; - unsigned nsecs; - struct spi_transfer *t = NULL; - unsigned cs_change; - int status; - struct spi_device *spi = m->spi; - - bitbang = spi_master_get_devdata(master); - - /* FIXME this is made-up ... the correct value is known to - * word-at-a-time bitbang code, and presumably chipselect() - * should enforce these requirements too? - */ - nsecs = 100; - - cs_change = 1; - status = 0; - - list_for_each_entry(t, &m->transfers, transfer_list) { - - if (bitbang->setup_transfer) { - status = bitbang->setup_transfer(spi, t); - if (status < 0) - break; - } - - /* set up default clock polarity, and activate chip; - * this implicitly updates clock and spi modes as - * previously recorded for this device via setup(). - * (and also deselects any other chip that might be - * selected ...) - */ - if (cs_change) { - bitbang->chipselect(spi, BITBANG_CS_ACTIVE); - ndelay(nsecs); - } - cs_change = t->cs_change; - if (!t->tx_buf && !t->rx_buf && t->len) { - status = -EINVAL; - break; - } - - /* transfer data. the lower level code handles any - * new dma mappings it needs. our caller always gave - * us dma-safe buffers. - */ - if (t->len) { - /* REVISIT dma API still needs a designated - * DMA_ADDR_INVALID; ~0 might be better. - */ - if (!m->is_dma_mapped) - t->rx_dma = t->tx_dma = 0; - status = bitbang->txrx_bufs(spi, t); - } - if (status > 0) - m->actual_length += status; - if (status != t->len) { - /* always report some kind of error */ - if (status >= 0) - status = -EREMOTEIO; - break; - } - status = 0; + struct spi_bitbang *bitbang = spi_master_get_devdata(master); + int status = 0; - /* protocol tweaks before next transfer */ - if (t->delay_usecs) - udelay(t->delay_usecs); - - if (cs_change && - !list_is_last(&t->transfer_list, &m->transfers)) { - /* sometimes a short mid-message deselect of the chip - * may be needed to terminate a mode or command - */ - ndelay(nsecs); - bitbang->chipselect(spi, BITBANG_CS_INACTIVE); - ndelay(nsecs); - } + if (bitbang->setup_transfer) { + status = bitbang->setup_transfer(spi, transfer); + if (status < 0) + goto out; } - m->status = status; + if (transfer->len) + status = bitbang->txrx_bufs(spi, transfer); - /* normally deactivate chipselect ... unless no error and - * cs_change has hinted that the next message will probably - * be for this chip too. - */ - if (!(status == 0 && cs_change)) { - ndelay(nsecs); - bitbang->chipselect(spi, BITBANG_CS_INACTIVE); - ndelay(nsecs); - } + if (status == transfer->len) + status = 0; + else if (status >= 0) + status = -EREMOTEIO; - spi_finalize_current_message(master); +out: + spi_finalize_current_transfer(master); return status; } @@ -376,6 +306,22 @@ static int spi_bitbang_unprepare_hardware(struct spi_master *spi) return 0; } +static void spi_bitbang_set_cs(struct spi_device *spi, bool enable) +{ + struct spi_bitbang *bitbang = spi_master_get_devdata(spi->master); + + /* SPI core provides CS high / low, but bitbang driver + * expects CS active + * spi device driver takes care of handling SPI_CS_HIGH + */ + enable = (!!(spi->mode & SPI_CS_HIGH) == enable); + + ndelay(SPI_BITBANG_CS_DELAY); + bitbang->chipselect(spi, enable ? BITBANG_CS_ACTIVE : + BITBANG_CS_INACTIVE); + ndelay(SPI_BITBANG_CS_DELAY); +} + /*----------------------------------------------------------------------*/ /** @@ -424,7 +370,8 @@ int spi_bitbang_start(struct spi_bitbang *bitbang) master->prepare_transfer_hardware = spi_bitbang_prepare_hardware; master->unprepare_transfer_hardware = spi_bitbang_unprepare_hardware; - master->transfer_one_message = spi_bitbang_transfer_one; + master->transfer_one = spi_bitbang_transfer_one; + master->set_cs = spi_bitbang_set_cs; if (!bitbang->txrx_bufs) { bitbang->use_dma = 0; -- cgit v1.2.1 From 541cf5de027b7e9afe3a8f0ce205d2ccc02ac3fe Mon Sep 17 00:00:00 2001 From: Martin Sperl Date: Fri, 11 Sep 2015 11:22:03 +0000 Subject: spi: bcm2835aux: spi: add bindings for the bcm2835 auxiliary spi devices This defines the spi1 and spi2 devices in the device-tree. Signed-off-by: Martin Sperl Acked-by: Stephen Warren Signed-off-by: Mark Brown --- .../bindings/spi/brcm,bcm2835-aux-spi.txt | 38 ++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/brcm,bcm2835-aux-spi.txt diff --git a/Documentation/devicetree/bindings/spi/brcm,bcm2835-aux-spi.txt b/Documentation/devicetree/bindings/spi/brcm,bcm2835-aux-spi.txt new file mode 100644 index 000000000000..9887b0724759 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/brcm,bcm2835-aux-spi.txt @@ -0,0 +1,38 @@ +Broadcom BCM2835 auxiliar SPI1/2 controller + +The BCM2835 contains two forms of SPI master controller, one known simply as +SPI0, and the other known as the "Universal SPI Master"; part of the +auxiliary block. This binding applies to the SPI1/2 controller. + +Required properties: +- compatible: Should be "brcm,bcm2835-aux-spi". +- reg: Should contain register location and length for the spi block +- interrupts: Should contain shared interrupt of the aux block +- clocks: The clock feeding the SPI controller - needs to + point to the auxiliar clock driver of the bcm2835, + as this clock will enable the output gate for the specific + clock. +- cs-gpios: the cs-gpios (native cs is NOT supported) + see also spi-bus.txt + +Example: + +spi1@7e215080 { + compatible = "brcm,bcm2835-aux-spi"; + reg = <0x7e215080 0x40>; + interrupts = <1 29>; + clocks = <&aux_clocks BCM2835_AUX_CLOCK_SPI1>; + #address-cells = <1>; + #size-cells = <0>; + cs-gpios = <&gpio 18>, <&gpio 17>, <&gpio 16>; +}; + +spi2@7e2150c0 { + compatible = "brcm,bcm2835-aux-spi"; + reg = <0x7e2150c0 0x40>; + interrupts = <1 29>; + clocks = <&aux_clocks BCM2835_AUX_CLOCK_SPI2>; + #address-cells = <1>; + #size-cells = <0>; + cs-gpios = <&gpio 43>, <&gpio 44>, <&gpio 45>; +}; -- cgit v1.2.1 From 1ea29b39f4c812ece2f936065a0a3d6fe44a263e Mon Sep 17 00:00:00 2001 From: Martin Sperl Date: Fri, 11 Sep 2015 11:22:04 +0000 Subject: spi: bcm2835aux: add bcm2835 auxiliary spi device driver The bcm2835 has 2 auxiliary spi bus masters spi1 and spi2. This implements the driver to enable these devices. The driver does not implement native chip-selects but uses the aribtrary GPIO-chip-selects provided by the spi-chipselect. Note that this driver relies on the fact that the clock is implemented by the clk-bcm2835-aux driver, which enables/disables the HW block when requesting/releasing the clock. Signed-off-by: Martin Sperl Acked-by: Eric Anholt Signed-off-by: Mark Brown --- drivers/spi/Kconfig | 11 + drivers/spi/Makefile | 1 + drivers/spi/spi-bcm2835aux.c | 493 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 505 insertions(+) create mode 100644 drivers/spi/spi-bcm2835aux.c diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index 4887f317ea58..26b860534fa7 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -88,6 +88,17 @@ config SPI_BCM2835 is for the regular SPI controller. Slave mode operation is not also not supported. +config SPI_BCM2835AUX + tristate "BCM2835 SPI auxiliary controller" + depends on ARCH_BCM2835 || COMPILE_TEST + depends on GPIOLIB + help + This selects a driver for the Broadcom BCM2835 SPI aux master. + + The BCM2835 contains two types of SPI master controller; the + "universal SPI master", and the regular SPI controller. + This driver is for the universal/auxiliary SPI controller. + config SPI_BFIN5XX tristate "SPI controller driver for ADI Blackfin5xx" depends on BLACKFIN && !BF60x diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile index 6a7f6f9d0d1c..31fb7fb2a0b6 100644 --- a/drivers/spi/Makefile +++ b/drivers/spi/Makefile @@ -15,6 +15,7 @@ obj-$(CONFIG_SPI_ATMEL) += spi-atmel.o obj-$(CONFIG_SPI_ATH79) += spi-ath79.o obj-$(CONFIG_SPI_AU1550) += spi-au1550.o obj-$(CONFIG_SPI_BCM2835) += spi-bcm2835.o +obj-$(CONFIG_SPI_BCM2835AUX) += spi-bcm2835aux.o obj-$(CONFIG_SPI_BCM53XX) += spi-bcm53xx.o obj-$(CONFIG_SPI_BCM63XX) += spi-bcm63xx.o obj-$(CONFIG_SPI_BCM63XX_HSSPI) += spi-bcm63xx-hsspi.o diff --git a/drivers/spi/spi-bcm2835aux.c b/drivers/spi/spi-bcm2835aux.c new file mode 100644 index 000000000000..f92b4a69fffa --- /dev/null +++ b/drivers/spi/spi-bcm2835aux.c @@ -0,0 +1,493 @@ +/* + * Driver for Broadcom BCM2835 auxiliary SPI Controllers + * + * the driver does not rely on the native chipselects at all + * but only uses the gpio type chipselects + * + * Based on: spi-bcm2835.c + * + * Copyright (C) 2015 Martin Sperl + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* + * spi register defines + * + * note there is garbage in the "official" documentation, + * so some data is taken from the file: + * brcm_usrlib/dag/vmcsx/vcinclude/bcm2708_chip/aux_io.h + * inside of: + * http://www.broadcom.com/docs/support/videocore/Brcm_Android_ICS_Graphics_Stack.tar.gz + */ + +/* SPI register offsets */ +#define BCM2835_AUX_SPI_CNTL0 0x00 +#define BCM2835_AUX_SPI_CNTL1 0x04 +#define BCM2835_AUX_SPI_STAT 0x08 +#define BCM2835_AUX_SPI_PEEK 0x0C +#define BCM2835_AUX_SPI_IO 0x20 +#define BCM2835_AUX_SPI_TXHOLD 0x30 + +/* Bitfields in CNTL0 */ +#define BCM2835_AUX_SPI_CNTL0_SPEED 0xFFF00000 +#define BCM2835_AUX_SPI_CNTL0_SPEED_MAX 0xFFF +#define BCM2835_AUX_SPI_CNTL0_SPEED_SHIFT 20 +#define BCM2835_AUX_SPI_CNTL0_CS 0x000E0000 +#define BCM2835_AUX_SPI_CNTL0_POSTINPUT 0x00010000 +#define BCM2835_AUX_SPI_CNTL0_VAR_CS 0x00008000 +#define BCM2835_AUX_SPI_CNTL0_VAR_WIDTH 0x00004000 +#define BCM2835_AUX_SPI_CNTL0_DOUTHOLD 0x00003000 +#define BCM2835_AUX_SPI_CNTL0_ENABLE 0x00000800 +#define BCM2835_AUX_SPI_CNTL0_CPHA_IN 0x00000400 +#define BCM2835_AUX_SPI_CNTL0_CLEARFIFO 0x00000200 +#define BCM2835_AUX_SPI_CNTL0_CPHA_OUT 0x00000100 +#define BCM2835_AUX_SPI_CNTL0_CPOL 0x00000080 +#define BCM2835_AUX_SPI_CNTL0_MSBF_OUT 0x00000040 +#define BCM2835_AUX_SPI_CNTL0_SHIFTLEN 0x0000003F + +/* Bitfields in CNTL1 */ +#define BCM2835_AUX_SPI_CNTL1_CSHIGH 0x00000700 +#define BCM2835_AUX_SPI_CNTL1_IDLE 0x00000080 +#define BCM2835_AUX_SPI_CNTL1_TXEMPTY 0x00000040 +#define BCM2835_AUX_SPI_CNTL1_MSBF_IN 0x00000002 +#define BCM2835_AUX_SPI_CNTL1_KEEP_IN 0x00000001 + +/* Bitfields in STAT */ +#define BCM2835_AUX_SPI_STAT_TX_LVL 0xFF000000 +#define BCM2835_AUX_SPI_STAT_RX_LVL 0x00FF0000 +#define BCM2835_AUX_SPI_STAT_TX_FULL 0x00000400 +#define BCM2835_AUX_SPI_STAT_TX_EMPTY 0x00000200 +#define BCM2835_AUX_SPI_STAT_RX_FULL 0x00000100 +#define BCM2835_AUX_SPI_STAT_RX_EMPTY 0x00000080 +#define BCM2835_AUX_SPI_STAT_BUSY 0x00000040 +#define BCM2835_AUX_SPI_STAT_BITCOUNT 0x0000003F + +/* timeout values */ +#define BCM2835_AUX_SPI_POLLING_LIMIT_US 30 +#define BCM2835_AUX_SPI_POLLING_JIFFIES 2 + +#define BCM2835_AUX_SPI_MODE_BITS (SPI_CPOL | SPI_CPHA | SPI_CS_HIGH \ + | SPI_NO_CS) + +struct bcm2835aux_spi { + void __iomem *regs; + struct clk *clk; + int irq; + u32 cntl[2]; + const u8 *tx_buf; + u8 *rx_buf; + int tx_len; + int rx_len; +}; + +static inline u32 bcm2835aux_rd(struct bcm2835aux_spi *bs, unsigned reg) +{ + return readl(bs->regs + reg); +} + +static inline void bcm2835aux_wr(struct bcm2835aux_spi *bs, unsigned reg, + u32 val) +{ + writel(val, bs->regs + reg); +} + +static inline void bcm2835aux_rd_fifo(struct bcm2835aux_spi *bs) +{ + u32 data; + int i; + int count = min(bs->rx_len, 3); + + data = bcm2835aux_rd(bs, BCM2835_AUX_SPI_IO); + if (bs->rx_buf) { + for (i = 0; i < count; i++) + *bs->rx_buf++ = (data >> (8 * (2 - i))) & 0xff; + } + bs->rx_len -= count; +} + +static inline void bcm2835aux_wr_fifo(struct bcm2835aux_spi *bs) +{ + u32 data; + u8 byte; + int count; + int i; + + /* gather up to 3 bytes to write to the FIFO */ + count = min(bs->tx_len, 3); + data = 0; + for (i = 0; i < count; i++) { + byte = bs->tx_buf ? *bs->tx_buf++ : 0; + data |= byte << (8 * (2 - i)); + } + + /* and set the variable bit-length */ + data |= (count * 8) << 24; + + /* and decrement length */ + bs->tx_len -= count; + + /* write to the correct TX-register */ + if (bs->tx_len) + bcm2835aux_wr(bs, BCM2835_AUX_SPI_TXHOLD, data); + else + bcm2835aux_wr(bs, BCM2835_AUX_SPI_IO, data); +} + +static void bcm2835aux_spi_reset_hw(struct bcm2835aux_spi *bs) +{ + /* disable spi clearing fifo and interrupts */ + bcm2835aux_wr(bs, BCM2835_AUX_SPI_CNTL1, 0); + bcm2835aux_wr(bs, BCM2835_AUX_SPI_CNTL0, + BCM2835_AUX_SPI_CNTL0_CLEARFIFO); +} + +static irqreturn_t bcm2835aux_spi_interrupt(int irq, void *dev_id) +{ + struct spi_master *master = dev_id; + struct bcm2835aux_spi *bs = spi_master_get_devdata(master); + irqreturn_t ret = IRQ_NONE; + + /* check if we have data to read */ + while (bs->rx_len && + (!(bcm2835aux_rd(bs, BCM2835_AUX_SPI_STAT) & + BCM2835_AUX_SPI_STAT_RX_EMPTY))) { + bcm2835aux_rd_fifo(bs); + ret = IRQ_HANDLED; + } + + /* check if we have data to write */ + while (bs->tx_len && + (!(bcm2835aux_rd(bs, BCM2835_AUX_SPI_STAT) & + BCM2835_AUX_SPI_STAT_TX_FULL))) { + bcm2835aux_wr_fifo(bs); + ret = IRQ_HANDLED; + } + + /* and check if we have reached "done" */ + while (bs->rx_len && + (!(bcm2835aux_rd(bs, BCM2835_AUX_SPI_STAT) & + BCM2835_AUX_SPI_STAT_BUSY))) { + bcm2835aux_rd_fifo(bs); + ret = IRQ_HANDLED; + } + + /* and if rx_len is 0 then wake up completion and disable spi */ + if (!bs->rx_len) { + bcm2835aux_spi_reset_hw(bs); + complete(&master->xfer_completion); + } + + /* and return */ + return ret; +} + +static int __bcm2835aux_spi_transfer_one_irq(struct spi_master *master, + struct spi_device *spi, + struct spi_transfer *tfr) +{ + struct bcm2835aux_spi *bs = spi_master_get_devdata(master); + + /* enable interrupts */ + bcm2835aux_wr(bs, BCM2835_AUX_SPI_CNTL1, bs->cntl[1] | + BCM2835_AUX_SPI_CNTL1_TXEMPTY | + BCM2835_AUX_SPI_CNTL1_IDLE); + + /* and wait for finish... */ + return 1; +} + +static int bcm2835aux_spi_transfer_one_irq(struct spi_master *master, + struct spi_device *spi, + struct spi_transfer *tfr) +{ + struct bcm2835aux_spi *bs = spi_master_get_devdata(master); + + /* fill in registers and fifos before enabling interrupts */ + bcm2835aux_wr(bs, BCM2835_AUX_SPI_CNTL1, bs->cntl[1]); + bcm2835aux_wr(bs, BCM2835_AUX_SPI_CNTL0, bs->cntl[0]); + + /* fill in tx fifo with data before enabling interrupts */ + while ((bs->tx_len) && + (!(bcm2835aux_rd(bs, BCM2835_AUX_SPI_STAT) & + BCM2835_AUX_SPI_STAT_TX_FULL))) { + bcm2835aux_wr_fifo(bs); + } + + /* now run the interrupt mode */ + return __bcm2835aux_spi_transfer_one_irq(master, spi, tfr); +} + +static int bcm2835aux_spi_transfer_one_poll(struct spi_master *master, + struct spi_device *spi, + struct spi_transfer *tfr, + unsigned long xfer_time_us) +{ + struct bcm2835aux_spi *bs = spi_master_get_devdata(master); + unsigned long timeout; + u32 stat; + + /* configure spi */ + bcm2835aux_wr(bs, BCM2835_AUX_SPI_CNTL1, bs->cntl[1]); + bcm2835aux_wr(bs, BCM2835_AUX_SPI_CNTL0, bs->cntl[0]); + + /* set the timeout */ + timeout = jiffies + BCM2835_AUX_SPI_POLLING_JIFFIES; + + /* loop until finished the transfer */ + while (bs->rx_len) { + /* read status */ + stat = bcm2835aux_rd(bs, BCM2835_AUX_SPI_STAT); + + /* fill in tx fifo with remaining data */ + if ((bs->tx_len) && (!(stat & BCM2835_AUX_SPI_STAT_TX_FULL))) { + bcm2835aux_wr_fifo(bs); + continue; + } + + /* read data from fifo for both cases */ + if (!(stat & BCM2835_AUX_SPI_STAT_RX_EMPTY)) { + bcm2835aux_rd_fifo(bs); + continue; + } + if (!(stat & BCM2835_AUX_SPI_STAT_BUSY)) { + bcm2835aux_rd_fifo(bs); + continue; + } + + /* there is still data pending to read check the timeout */ + if (bs->rx_len && time_after(jiffies, timeout)) { + dev_dbg_ratelimited(&spi->dev, + "timeout period reached: jiffies: %lu remaining tx/rx: %d/%d - falling back to interrupt mode\n", + jiffies - timeout, + bs->tx_len, bs->rx_len); + /* forward to interrupt handler */ + return __bcm2835aux_spi_transfer_one_irq(master, + spi, tfr); + } + } + + /* Transfer complete - reset SPI HW */ + bcm2835aux_spi_reset_hw(bs); + + /* and return without waiting for completion */ + return 0; +} + +static int bcm2835aux_spi_transfer_one(struct spi_master *master, + struct spi_device *spi, + struct spi_transfer *tfr) +{ + struct bcm2835aux_spi *bs = spi_master_get_devdata(master); + unsigned long spi_hz, clk_hz, speed; + unsigned long spi_used_hz, xfer_time_us; + + /* calculate the registers to handle + * + * note that we use the variable data mode, which + * is not optimal for longer transfers as we waste registers + * resulting (potentially) in more interrupts when transferring + * more than 12 bytes + */ + bs->cntl[0] = BCM2835_AUX_SPI_CNTL0_ENABLE | + BCM2835_AUX_SPI_CNTL0_VAR_WIDTH | + BCM2835_AUX_SPI_CNTL0_MSBF_OUT; + bs->cntl[1] = BCM2835_AUX_SPI_CNTL1_MSBF_IN; + + /* set clock */ + spi_hz = tfr->speed_hz; + clk_hz = clk_get_rate(bs->clk); + + if (spi_hz >= clk_hz / 2) { + speed = 0; + } else if (spi_hz) { + speed = DIV_ROUND_UP(clk_hz, 2 * spi_hz) - 1; + if (speed > BCM2835_AUX_SPI_CNTL0_SPEED_MAX) + speed = BCM2835_AUX_SPI_CNTL0_SPEED_MAX; + } else { /* the slowest we can go */ + speed = BCM2835_AUX_SPI_CNTL0_SPEED_MAX; + } + bs->cntl[0] |= speed << BCM2835_AUX_SPI_CNTL0_SPEED_SHIFT; + + spi_used_hz = clk_hz / (2 * (speed + 1)); + + /* handle all the modes */ + if (spi->mode & SPI_CPOL) + bs->cntl[0] |= BCM2835_AUX_SPI_CNTL0_CPOL; + if (spi->mode & SPI_CPHA) + bs->cntl[0] |= BCM2835_AUX_SPI_CNTL0_CPHA_OUT | + BCM2835_AUX_SPI_CNTL0_CPHA_IN; + + /* set transmit buffers and length */ + bs->tx_buf = tfr->tx_buf; + bs->rx_buf = tfr->rx_buf; + bs->tx_len = tfr->len; + bs->rx_len = tfr->len; + + /* calculate the estimated time in us the transfer runs */ + xfer_time_us = tfr->len + * 9 /* clocks/byte - SPI-HW waits 1 clock after each byte */ + * 1000000 / spi_used_hz; + + /* run in polling mode for short transfers */ + if (xfer_time_us < BCM2835_AUX_SPI_POLLING_LIMIT_US) + return bcm2835aux_spi_transfer_one_poll(master, spi, tfr, + xfer_time_us); + + /* run in interrupt mode for all others */ + return bcm2835aux_spi_transfer_one_irq(master, spi, tfr); +} + +static void bcm2835aux_spi_handle_err(struct spi_master *master, + struct spi_message *msg) +{ + struct bcm2835aux_spi *bs = spi_master_get_devdata(master); + + bcm2835aux_spi_reset_hw(bs); +} + +static int bcm2835aux_spi_probe(struct platform_device *pdev) +{ + struct spi_master *master; + struct bcm2835aux_spi *bs; + struct resource *res; + unsigned long clk_hz; + int err; + + master = spi_alloc_master(&pdev->dev, sizeof(*bs)); + if (!master) { + dev_err(&pdev->dev, "spi_alloc_master() failed\n"); + return -ENOMEM; + } + + platform_set_drvdata(pdev, master); + master->mode_bits = BCM2835_AUX_SPI_MODE_BITS; + master->bits_per_word_mask = SPI_BPW_MASK(8); + master->num_chipselect = -1; + master->transfer_one = bcm2835aux_spi_transfer_one; + master->handle_err = bcm2835aux_spi_handle_err; + master->dev.of_node = pdev->dev.of_node; + + bs = spi_master_get_devdata(master); + + /* the main area */ + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + bs->regs = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(bs->regs)) { + err = PTR_ERR(bs->regs); + goto out_master_put; + } + + bs->clk = devm_clk_get(&pdev->dev, NULL); + if ((!bs->clk) || (IS_ERR(bs->clk))) { + err = PTR_ERR(bs->clk); + dev_err(&pdev->dev, "could not get clk: %d\n", err); + goto out_master_put; + } + + bs->irq = irq_of_parse_and_map(pdev->dev.of_node, 0); + if (bs->irq <= 0) { + dev_err(&pdev->dev, "could not get IRQ: %d\n", bs->irq); + err = bs->irq ? bs->irq : -ENODEV; + goto out_master_put; + } + + /* this also enables the HW block */ + err = clk_prepare_enable(bs->clk); + if (err) { + dev_err(&pdev->dev, "could not prepare clock: %d\n", err); + goto out_master_put; + } + + /* just checking if the clock returns a sane value */ + clk_hz = clk_get_rate(bs->clk); + if (!clk_hz) { + dev_err(&pdev->dev, "clock returns 0 Hz\n"); + err = -ENODEV; + goto out_clk_disable; + } + + err = devm_request_irq(&pdev->dev, bs->irq, + bcm2835aux_spi_interrupt, + IRQF_SHARED, + dev_name(&pdev->dev), master); + if (err) { + dev_err(&pdev->dev, "could not request IRQ: %d\n", err); + goto out_clk_disable; + } + + /* reset SPI-HW block */ + bcm2835aux_spi_reset_hw(bs); + + err = devm_spi_register_master(&pdev->dev, master); + if (err) { + dev_err(&pdev->dev, "could not register SPI master: %d\n", err); + goto out_clk_disable; + } + + return 0; + +out_clk_disable: + clk_disable_unprepare(bs->clk); +out_master_put: + spi_master_put(master); + return err; +} + +static int bcm2835aux_spi_remove(struct platform_device *pdev) +{ + struct spi_master *master = platform_get_drvdata(pdev); + struct bcm2835aux_spi *bs = spi_master_get_devdata(master); + + bcm2835aux_spi_reset_hw(bs); + + /* disable the HW block by releasing the clock */ + clk_disable_unprepare(bs->clk); + + return 0; +} + +static const struct of_device_id bcm2835aux_spi_match[] = { + { .compatible = "brcm,bcm2835-aux-spi", }, + {} +}; +MODULE_DEVICE_TABLE(of, bcm2835aux_spi_match); + +static struct platform_driver bcm2835aux_spi_driver = { + .driver = { + .name = "spi-bcm2835aux", + .of_match_table = bcm2835aux_spi_match, + }, + .probe = bcm2835aux_spi_probe, + .remove = bcm2835aux_spi_remove, +}; +module_platform_driver(bcm2835aux_spi_driver); + +MODULE_DESCRIPTION("SPI controller driver for Broadcom BCM2835 aux"); +MODULE_AUTHOR("Martin Sperl "); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.1 From f9b841af4c1c3c3b7ce3552ab5ee5d9c430e9c29 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Fri, 9 Oct 2015 10:39:27 +0100 Subject: spi: spi-coldfire-qspi: enable RuntimePM before registering to the core The core may register clients attached to this master which may use funtionality from the master. So, RuntimePM must be enabled before, otherwise this will fail. Signed-off-by: Wolfram Sang Signed-off-by: Mark Brown --- drivers/spi/spi-coldfire-qspi.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-coldfire-qspi.c b/drivers/spi/spi-coldfire-qspi.c index 688956ff5095..23f6fffd75e1 100644 --- a/drivers/spi/spi-coldfire-qspi.c +++ b/drivers/spi/spi-coldfire-qspi.c @@ -420,19 +420,20 @@ static int mcfqspi_probe(struct platform_device *pdev) master->auto_runtime_pm = true; platform_set_drvdata(pdev, master); + pm_runtime_enable(&pdev->dev); status = devm_spi_register_master(&pdev->dev, master); if (status) { dev_dbg(&pdev->dev, "spi_register_master failed\n"); goto fail2; } - pm_runtime_enable(&pdev->dev); dev_info(&pdev->dev, "Coldfire QSPI bus driver\n"); return 0; fail2: + pm_runtime_disable(&pdev->dev); mcfqspi_cs_teardown(mcfqspi); fail1: clk_disable(mcfqspi->clk); -- cgit v1.2.1 From 682b5280bf00c0618606ecb26cf4a9342d5e282e Mon Sep 17 00:00:00 2001 From: Jonas Gorski Date: Mon, 12 Oct 2015 12:24:21 +0200 Subject: spi/bcm63xx: fix standard accessors and compile guard Use the correct guard CONFIG_CPU_BIG_ENDIAN and the *be accessors to follow native endianness on big endian systems. Signed-off-by: Jonas Gorski Signed-off-by: Mark Brown --- drivers/spi/spi-bcm63xx.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/spi/spi-bcm63xx.c b/drivers/spi/spi-bcm63xx.c index ef05387c1341..461891fbc198 100644 --- a/drivers/spi/spi-bcm63xx.c +++ b/drivers/spi/spi-bcm63xx.c @@ -62,8 +62,8 @@ static inline u8 bcm_spi_readb(struct bcm63xx_spi *bs, static inline u16 bcm_spi_readw(struct bcm63xx_spi *bs, unsigned int offset) { -#ifdef CONFIG_BIG_ENDIAN - return ioread16(bs->regs + bcm63xx_spireg(offset)); +#ifdef CONFIG_CPU_BIG_ENDIAN + return ioread16be(bs->regs + bcm63xx_spireg(offset)); #else return readw(bs->regs + bcm63xx_spireg(offset)); #endif @@ -78,8 +78,8 @@ static inline void bcm_spi_writeb(struct bcm63xx_spi *bs, static inline void bcm_spi_writew(struct bcm63xx_spi *bs, u16 value, unsigned int offset) { -#ifdef CONFIG_BIG_ENDIAN - iowrite16(value, bs->regs + bcm63xx_spireg(offset)); +#ifdef CONFIG_CPU_BIG_ENDIAN + iowrite16be(value, bs->regs + bcm63xx_spireg(offset)); #else writew(value, bs->regs + bcm63xx_spireg(offset)); #endif -- cgit v1.2.1 From f13a5e8a856cda0626da316d853a71952f14b1d7 Mon Sep 17 00:00:00 2001 From: Jonas Gorski Date: Mon, 12 Oct 2015 12:24:22 +0200 Subject: spi/bcm63xx: move message control word description to register offsets Make the message control word parameters part of the register offsets array so we have them all in one struct. Signed-off-by: Jonas Gorski Signed-off-by: Mark Brown --- arch/mips/bcm63xx/dev-spi.c | 20 ++------------------ arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_spi.h | 16 +++++++--------- drivers/spi/spi-bcm63xx.c | 7 +++---- 3 files changed, 12 insertions(+), 31 deletions(-) diff --git a/arch/mips/bcm63xx/dev-spi.c b/arch/mips/bcm63xx/dev-spi.c index ad448e41e3bd..b21225647e03 100644 --- a/arch/mips/bcm63xx/dev-spi.c +++ b/arch/mips/bcm63xx/dev-spi.c @@ -53,19 +53,11 @@ static struct resource spi_resources[] = { }, }; -static struct bcm63xx_spi_pdata spi_pdata = { - .bus_num = 0, - .num_chipselect = 8, -}; - static struct platform_device bcm63xx_spi_device = { .name = "bcm63xx-spi", .id = -1, .num_resources = ARRAY_SIZE(spi_resources), .resource = spi_resources, - .dev = { - .platform_data = &spi_pdata, - }, }; int __init bcm63xx_spi_register(void) @@ -77,20 +69,12 @@ int __init bcm63xx_spi_register(void) spi_resources[0].end = spi_resources[0].start; spi_resources[1].start = bcm63xx_get_irq_number(IRQ_SPI); - if (BCMCPU_IS_6338() || BCMCPU_IS_6348()) { + if (BCMCPU_IS_6338() || BCMCPU_IS_6348()) spi_resources[0].end += BCM_6348_RSET_SPI_SIZE - 1; - spi_pdata.fifo_size = SPI_6348_MSG_DATA_SIZE; - spi_pdata.msg_type_shift = SPI_6348_MSG_TYPE_SHIFT; - spi_pdata.msg_ctl_width = SPI_6348_MSG_CTL_WIDTH; - } if (BCMCPU_IS_3368() || BCMCPU_IS_6358() || BCMCPU_IS_6362() || - BCMCPU_IS_6368()) { + BCMCPU_IS_6368()) spi_resources[0].end += BCM_6358_RSET_SPI_SIZE - 1; - spi_pdata.fifo_size = SPI_6358_MSG_DATA_SIZE; - spi_pdata.msg_type_shift = SPI_6358_MSG_TYPE_SHIFT; - spi_pdata.msg_ctl_width = SPI_6358_MSG_CTL_WIDTH; - } bcm63xx_spi_regs_init(); diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_spi.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_spi.h index 25737655d141..1d121fd5b6f5 100644 --- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_spi.h +++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_spi.h @@ -7,14 +7,6 @@ int __init bcm63xx_spi_register(void); -struct bcm63xx_spi_pdata { - unsigned int fifo_size; - unsigned int msg_type_shift; - unsigned int msg_ctl_width; - int bus_num; - int num_chipselect; -}; - enum bcm63xx_regs_spi { SPI_CMD, SPI_INT_STATUS, @@ -28,6 +20,9 @@ enum bcm63xx_regs_spi { SPI_MSG_CTL, SPI_MSG_DATA, SPI_RX_DATA, + SPI_MSG_TYPE_SHIFT, + SPI_MSG_CTL_WIDTH, + SPI_MSG_DATA_SIZE, }; #define __GEN_SPI_REGS_TABLE(__cpu) \ @@ -42,7 +37,10 @@ enum bcm63xx_regs_spi { [SPI_RX_TAIL] = SPI_## __cpu ##_RX_TAIL, \ [SPI_MSG_CTL] = SPI_## __cpu ##_MSG_CTL, \ [SPI_MSG_DATA] = SPI_## __cpu ##_MSG_DATA, \ - [SPI_RX_DATA] = SPI_## __cpu ##_RX_DATA, + [SPI_RX_DATA] = SPI_## __cpu ##_RX_DATA, \ + [SPI_MSG_TYPE_SHIFT] = SPI_## __cpu ##_MSG_TYPE_SHIFT, \ + [SPI_MSG_CTL_WIDTH] = SPI_## __cpu ##_MSG_CTL_WIDTH, \ + [SPI_MSG_DATA_SIZE] = SPI_## __cpu ##_MSG_DATA_SIZE, static inline unsigned long bcm63xx_spireg(enum bcm63xx_regs_spi reg) { diff --git a/drivers/spi/spi-bcm63xx.c b/drivers/spi/spi-bcm63xx.c index 461891fbc198..b3da04494fa9 100644 --- a/drivers/spi/spi-bcm63xx.c +++ b/drivers/spi/spi-bcm63xx.c @@ -329,7 +329,6 @@ static int bcm63xx_spi_probe(struct platform_device *pdev) { struct resource *r; struct device *dev = &pdev->dev; - struct bcm63xx_spi_pdata *pdata = dev_get_platdata(&pdev->dev); int irq; struct spi_master *master; struct clk *clk; @@ -369,7 +368,7 @@ static int bcm63xx_spi_probe(struct platform_device *pdev) bs->irq = irq; bs->clk = clk; - bs->fifo_size = pdata->fifo_size; + bs->fifo_size = bcm63xx_spireg(SPI_MSG_DATA_SIZE); ret = devm_request_irq(&pdev->dev, irq, bcm63xx_spi_interrupt, 0, pdev->name, master); @@ -384,8 +383,8 @@ static int bcm63xx_spi_probe(struct platform_device *pdev) master->mode_bits = MODEBITS; master->bits_per_word_mask = SPI_BPW_MASK(8); master->auto_runtime_pm = true; - bs->msg_type_shift = pdata->msg_type_shift; - bs->msg_ctl_width = pdata->msg_ctl_width; + bs->msg_type_shift = bcm63xx_spireg(SPI_MSG_TYPE_SHIFT); + bs->msg_ctl_width = bcm63xx_spireg(SPI_MSG_CTL_WIDTH); bs->tx_io = (u8 *)(bs->regs + bcm63xx_spireg(SPI_MSG_DATA)); bs->rx_io = (const u8 *)(bs->regs + bcm63xx_spireg(SPI_RX_DATA)); -- cgit v1.2.1 From 44af7927316e83eb8865933f7c836dcc85f8eb74 Mon Sep 17 00:00:00 2001 From: Jon Hunter Date: Fri, 9 Oct 2015 15:45:55 +0100 Subject: spi: Map SPI OF client IRQ at probe time Currently the IRQs for SPI client devices, registered via device-tree, are mapped when the client devices are registered. If the corresponding irq-chip has not been probed yet, then the probing of the client device will fail and will not be retried. Resolve this by mapping the IRQ at probe time and allow the probe to be deferred if the IRQ is not yet available. If of_irq_get() returns an error that is not -EPROBE_DEFER, then assume that the SPI client does not have an IRQ and set the IRQ number to zero (which is equivalent to irq_of_parse_and_map()). This is based on some inputs from Thierry Reding . Cc: Thierry Reding Cc: Tomeu Vizoso Signed-off-by: Jon Hunter Signed-off-by: Mark Brown --- drivers/spi/spi.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 3abb3903f2ad..40c9afac047f 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -270,15 +270,24 @@ EXPORT_SYMBOL_GPL(spi_bus_type); static int spi_drv_probe(struct device *dev) { const struct spi_driver *sdrv = to_spi_driver(dev->driver); + struct spi_device *spi = to_spi_device(dev); int ret; ret = of_clk_set_defaults(dev->of_node, false); if (ret) return ret; + if (dev->of_node) { + spi->irq = of_irq_get(dev->of_node, 0); + if (spi->irq == -EPROBE_DEFER) + return -EPROBE_DEFER; + if (spi->irq < 0) + spi->irq = 0; + } + ret = dev_pm_domain_attach(dev, true); if (ret != -EPROBE_DEFER) { - ret = sdrv->probe(to_spi_device(dev)); + ret = sdrv->probe(spi); if (ret) dev_pm_domain_detach(dev, true); } @@ -1433,9 +1442,6 @@ of_register_spi_device(struct spi_master *master, struct device_node *nc) } spi->max_speed_hz = value; - /* IRQ */ - spi->irq = irq_of_parse_and_map(nc, 0); - /* Store a pointer to the node in the device structure */ of_node_get(nc); spi->dev.of_node = nc; -- cgit v1.2.1 From bc27a53928981662079aa243915b443370294a03 Mon Sep 17 00:00:00 2001 From: Vignesh R Date: Mon, 12 Oct 2015 13:22:02 +0530 Subject: spi: ti-qspi: Fix data corruption seen on r/w stress test Writing invalid command to QSPI_SPI_CMD_REG will terminate current transfer and de-assert the chip select. This has to be done before calling spi_finalize_current_message(). Because spi_finalize_current_message() will mark the end of current message transfer and schedule the next transfer. If the chipselect is not de-asserted before calling spi_finalize_current_message() then the next transfer will overlap with the previous transfer leading to data corruption. __spi_pump_message() can be called either from kthread worker context or directly from the calling process's context. It is possible that these two calls can race against each other. But race is serialized by checking whether master->cur_msg == NULL (pointer to msg being handled by transfer_one() at present). The master->cur_msg is set to NULL when spi_finalize_current_message() is called on that message, which means calling spi_finalize_current_message() allows __spi_sync() to pump next message in calling process context. Now if spi-ti-qspi calls spi_finalize_current_message() before we terminate transfer at hardware side, if __spi_pump_message() is called from process context then the successive transactions can overlap. Fix this by moving writing invalid command to QSPI_SPI_CMD_REG to before calling spi_finalize_current_message() call. Cc: stable@vger.kernel.org # v3.12+ Signed-off-by: Vignesh R Signed-off-by: Mark Brown --- drivers/spi/spi-ti-qspi.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/spi/spi-ti-qspi.c b/drivers/spi/spi-ti-qspi.c index aa6d284131e0..81b84858cfee 100644 --- a/drivers/spi/spi-ti-qspi.c +++ b/drivers/spi/spi-ti-qspi.c @@ -410,11 +410,10 @@ static int ti_qspi_start_transfer_one(struct spi_master *master, mutex_unlock(&qspi->list_lock); + ti_qspi_write(qspi, qspi->cmd | QSPI_INVAL, QSPI_SPI_CMD_REG); m->status = status; spi_finalize_current_message(master); - ti_qspi_write(qspi, qspi->cmd | QSPI_INVAL, QSPI_SPI_CMD_REG); - return status; } -- cgit v1.2.1 From ddf0e1c20d8b72c409e4c954002069445babc762 Mon Sep 17 00:00:00 2001 From: Martin Sperl Date: Thu, 15 Oct 2015 10:09:11 +0000 Subject: spi: bcm2835: change initialization order and switch to platform_get_irq Change the initialization order of the HW so that the interrupt is only requested after the HW is initialized Also the use of irq_of_parse_and_map is replaced by platform_get_irq. Signed-off-by: Martin Sperl Signed-off-by: Mark Brown --- drivers/spi/spi-bcm2835.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/spi/spi-bcm2835.c b/drivers/spi/spi-bcm2835.c index e7874a6171ec..370822e4669f 100644 --- a/drivers/spi/spi-bcm2835.c +++ b/drivers/spi/spi-bcm2835.c @@ -777,7 +777,7 @@ static int bcm2835_spi_probe(struct platform_device *pdev) goto out_master_put; } - bs->irq = irq_of_parse_and_map(pdev->dev.of_node, 0); + bs->irq = platform_get_irq(pdev, 0); if (bs->irq <= 0) { dev_err(&pdev->dev, "could not get IRQ: %d\n", bs->irq); err = bs->irq ? bs->irq : -ENODEV; @@ -786,6 +786,12 @@ static int bcm2835_spi_probe(struct platform_device *pdev) clk_prepare_enable(bs->clk); + bcm2835_dma_init(master, &pdev->dev); + + /* initialise the hardware with the default polarities */ + bcm2835_wr(bs, BCM2835_SPI_CS, + BCM2835_SPI_CS_CLEAR_RX | BCM2835_SPI_CS_CLEAR_TX); + err = devm_request_irq(&pdev->dev, bs->irq, bcm2835_spi_interrupt, 0, dev_name(&pdev->dev), master); if (err) { @@ -793,12 +799,6 @@ static int bcm2835_spi_probe(struct platform_device *pdev) goto out_clk_disable; } - bcm2835_dma_init(master, &pdev->dev); - - /* initialise the hardware with the default polarities */ - bcm2835_wr(bs, BCM2835_SPI_CS, - BCM2835_SPI_CS_CLEAR_RX | BCM2835_SPI_CS_CLEAR_TX); - err = devm_spi_register_master(&pdev->dev, master); if (err) { dev_err(&pdev->dev, "could not register SPI master: %d\n", err); -- cgit v1.2.1 From 72aac02b3730fa0e2e1ccab57712a94400344f8a Mon Sep 17 00:00:00 2001 From: Martin Sperl Date: Fri, 16 Oct 2015 14:17:19 +0000 Subject: spi: bcm2835aux: fixed bad data on longer transfers There are strange issues with the auxiliary spi device that result in "lost" data in the RX path if the fifo is filled by too much (even though the status register is checked if new data can get filled in). This has been observed primarily for the interrupt case. Polling works fine, probably because the RX fifo is pulled immediately when in the tight polling loop. For that reason we have to limit the pending bytes to less than 15 when filling the fifo in interrupt mode. There also was an issue returning the "wrong" last 1/2 bytes of a transfer when the transfer is not a multiple of 3 bytes. (this impacted polling and interrupt modes) Also fixed an overflow in the estimation of the transfer time used to decide if we run in interrupt or polling mode (found with the spi-bcm2835.c driver originally). Reported-by: Georgii Staroselskii Signed-off-by: Martin Sperl Signed-off-by: Mark Brown --- drivers/spi/spi-bcm2835aux.c | 43 +++++++++++++++++++++++++++++++------------ 1 file changed, 31 insertions(+), 12 deletions(-) diff --git a/drivers/spi/spi-bcm2835aux.c b/drivers/spi/spi-bcm2835aux.c index f92b4a69fffa..05d2d6eb7bfa 100644 --- a/drivers/spi/spi-bcm2835aux.c +++ b/drivers/spi/spi-bcm2835aux.c @@ -104,6 +104,7 @@ struct bcm2835aux_spi { u8 *rx_buf; int tx_len; int rx_len; + int pending; }; static inline u32 bcm2835aux_rd(struct bcm2835aux_spi *bs, unsigned reg) @@ -120,15 +121,27 @@ static inline void bcm2835aux_wr(struct bcm2835aux_spi *bs, unsigned reg, static inline void bcm2835aux_rd_fifo(struct bcm2835aux_spi *bs) { u32 data; - int i; int count = min(bs->rx_len, 3); data = bcm2835aux_rd(bs, BCM2835_AUX_SPI_IO); if (bs->rx_buf) { - for (i = 0; i < count; i++) - *bs->rx_buf++ = (data >> (8 * (2 - i))) & 0xff; + switch (count) { + case 4: + *bs->rx_buf++ = (data >> 24) & 0xff; + /* fallthrough */ + case 3: + *bs->rx_buf++ = (data >> 16) & 0xff; + /* fallthrough */ + case 2: + *bs->rx_buf++ = (data >> 8) & 0xff; + /* fallthrough */ + case 1: + *bs->rx_buf++ = (data >> 0) & 0xff; + /* fallthrough - no default */ + } } bs->rx_len -= count; + bs->pending -= count; } static inline void bcm2835aux_wr_fifo(struct bcm2835aux_spi *bs) @@ -151,6 +164,7 @@ static inline void bcm2835aux_wr_fifo(struct bcm2835aux_spi *bs) /* and decrement length */ bs->tx_len -= count; + bs->pending += count; /* write to the correct TX-register */ if (bs->tx_len) @@ -183,6 +197,7 @@ static irqreturn_t bcm2835aux_spi_interrupt(int irq, void *dev_id) /* check if we have data to write */ while (bs->tx_len && + (bs->pending < 12) && (!(bcm2835aux_rd(bs, BCM2835_AUX_SPI_STAT) & BCM2835_AUX_SPI_STAT_TX_FULL))) { bcm2835aux_wr_fifo(bs); @@ -234,6 +249,7 @@ static int bcm2835aux_spi_transfer_one_irq(struct spi_master *master, /* fill in tx fifo with data before enabling interrupts */ while ((bs->tx_len) && + (bs->pending < 12) && (!(bcm2835aux_rd(bs, BCM2835_AUX_SPI_STAT) & BCM2835_AUX_SPI_STAT_TX_FULL))) { bcm2835aux_wr_fifo(bs); @@ -245,8 +261,7 @@ static int bcm2835aux_spi_transfer_one_irq(struct spi_master *master, static int bcm2835aux_spi_transfer_one_poll(struct spi_master *master, struct spi_device *spi, - struct spi_transfer *tfr, - unsigned long xfer_time_us) + struct spi_transfer *tfr) { struct bcm2835aux_spi *bs = spi_master_get_devdata(master); unsigned long timeout; @@ -305,7 +320,8 @@ static int bcm2835aux_spi_transfer_one(struct spi_master *master, { struct bcm2835aux_spi *bs = spi_master_get_devdata(master); unsigned long spi_hz, clk_hz, speed; - unsigned long spi_used_hz, xfer_time_us; + unsigned long spi_used_hz; + unsigned long long xfer_time_us; /* calculate the registers to handle * @@ -348,16 +364,19 @@ static int bcm2835aux_spi_transfer_one(struct spi_master *master, bs->rx_buf = tfr->rx_buf; bs->tx_len = tfr->len; bs->rx_len = tfr->len; + bs->pending = 0; - /* calculate the estimated time in us the transfer runs */ - xfer_time_us = tfr->len - * 9 /* clocks/byte - SPI-HW waits 1 clock after each byte */ - * 1000000 / spi_used_hz; + /* calculate the estimated time in us the transfer runs + * note that there are are 2 idle clocks after each + * chunk getting transferred - in our case the chunk size + * is 3 bytes, so we approximate this by 9 bits/byte + */ + xfer_time_us = tfr->len * 9 * 1000000; + do_div(xfer_time_us, spi_used_hz); /* run in polling mode for short transfers */ if (xfer_time_us < BCM2835_AUX_SPI_POLLING_LIMIT_US) - return bcm2835aux_spi_transfer_one_poll(master, spi, tfr, - xfer_time_us); + return bcm2835aux_spi_transfer_one_poll(master, spi, tfr); /* run in interrupt mode for all others */ return bcm2835aux_spi_transfer_one_irq(master, spi, tfr); -- cgit v1.2.1 From 07bce09e11f5007635d7f9e6bc55679dd6ed18bd Mon Sep 17 00:00:00 2001 From: Martin Sperl Date: Thu, 15 Oct 2015 10:10:20 +0000 Subject: spi: bcm2835aux: change initialization order and switch to platform_get_irq Change the initialization order of the HW so that the interrupt is only requested after the HW is initialized Also the use of irq_of_parse_and_map is replaced by platform_get_irq. Signed-off-by: Martin Sperl Signed-off-by: Mark Brown --- drivers/spi/spi-bcm2835aux.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/spi/spi-bcm2835aux.c b/drivers/spi/spi-bcm2835aux.c index 05d2d6eb7bfa..7de6f8472a81 100644 --- a/drivers/spi/spi-bcm2835aux.c +++ b/drivers/spi/spi-bcm2835aux.c @@ -429,7 +429,7 @@ static int bcm2835aux_spi_probe(struct platform_device *pdev) goto out_master_put; } - bs->irq = irq_of_parse_and_map(pdev->dev.of_node, 0); + bs->irq = platform_get_irq(pdev, 0); if (bs->irq <= 0) { dev_err(&pdev->dev, "could not get IRQ: %d\n", bs->irq); err = bs->irq ? bs->irq : -ENODEV; @@ -451,6 +451,9 @@ static int bcm2835aux_spi_probe(struct platform_device *pdev) goto out_clk_disable; } + /* reset SPI-HW block */ + bcm2835aux_spi_reset_hw(bs); + err = devm_request_irq(&pdev->dev, bs->irq, bcm2835aux_spi_interrupt, IRQF_SHARED, @@ -460,9 +463,6 @@ static int bcm2835aux_spi_probe(struct platform_device *pdev) goto out_clk_disable; } - /* reset SPI-HW block */ - bcm2835aux_spi_reset_hw(bs); - err = devm_spi_register_master(&pdev->dev, master); if (err) { dev_err(&pdev->dev, "could not register SPI master: %d\n", err); -- cgit v1.2.1 From 5ab8d262122bc951b308e51cdcc55bc67b1f5fdb Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Oct 2015 22:43:07 +0300 Subject: spi: core: propagate return code of __spi_validate_bits_per_word() Propagate the actual return code of __spi_validate_bits_per_word() in spi_setup(). Signed-off-by: Andy Shevchenko Signed-off-by: Mark Brown --- drivers/spi/spi.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 40c9afac047f..64c1aedde481 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -1956,7 +1956,7 @@ static int __spi_validate_bits_per_word(struct spi_master *master, u8 bits_per_w int spi_setup(struct spi_device *spi) { unsigned bad_bits, ugly_bits; - int status = 0; + int status; /* check mode to prevent that DUAL and QUAD set at the same time */ @@ -1993,8 +1993,9 @@ int spi_setup(struct spi_device *spi) if (!spi->bits_per_word) spi->bits_per_word = 8; - if (__spi_validate_bits_per_word(spi->master, spi->bits_per_word)) - return -EINVAL; + status = __spi_validate_bits_per_word(spi->master, spi->bits_per_word); + if (status) + return status; if (!spi->max_speed_hz) spi->max_speed_hz = spi->master->max_speed_hz; -- cgit v1.2.1 From 3ad48062233f32a8dd2649403f5afc076710f86b Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Tue, 13 Oct 2015 17:09:14 +0300 Subject: spi: pxa2xx: choose closest lower speed As per discussion [1] the best choice is to set closest speed which is not going over the asked one. Do the same approach for Intel Quark boards. [1] http://www.spinics.net/lists/linux-spi/msg03389.html Signed-off-by: Andy Shevchenko Signed-off-by: Mark Brown --- drivers/spi/spi-pxa2xx.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index 22b473ebf607..158967a10bec 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -730,7 +730,7 @@ static unsigned int quark_x1000_get_clk_div(int rate, u32 *dds) mul = (1 << 24) >> 1; /* Calculate initial quot */ - q1 = DIV_ROUND_CLOSEST(fref1, rate); + q1 = DIV_ROUND_UP(fref1, rate); /* Scale q1 if it's too big */ if (q1 > 256) { @@ -755,7 +755,7 @@ static unsigned int quark_x1000_get_clk_div(int rate, u32 *dds) /* Case 2 */ - q2 = DIV_ROUND_CLOSEST(fref2, rate); + q2 = DIV_ROUND_UP(fref2, rate); r2 = abs(fref2 / q2 - rate); /* @@ -774,13 +774,13 @@ static unsigned int quark_x1000_get_clk_div(int rate, u32 *dds) mul = (1 << 24) * 2 / 5; } - /* Check case 3 only If the divisor is big enough */ + /* Check case 3 only if the divisor is big enough */ if (fref / rate >= 80) { u64 fssp; u32 m; /* Calculate initial quot */ - q1 = DIV_ROUND_CLOSEST(fref, rate); + q1 = DIV_ROUND_UP(fref, rate); m = (1 << 24) / q1; /* Get the remainder */ -- cgit v1.2.1 From 57c2ecd9bf971946ea0c6ae90a79c90a22159c73 Mon Sep 17 00:00:00 2001 From: Vignesh R Date: Tue, 13 Oct 2015 15:51:05 +0530 Subject: spi: spi-ti-qspi: switch to polling mode for better r/w performance Currently word completion interrupt is fired for transfer of every word(8bit to 128bit in size). This adds a lot of overhead, and decreases r/w throughput. It hardly takes 3us(@48MHz) for 128bit r/w to complete, hence its better to poll on word complete bit to be set in QSPI_SPI_STATUS_REG instead of using interrupts. This increases the throughput by 30% in both read and write case. So, switch to polling mode instead of interrupts to determine completion of word transfer. Signed-off-by: Vignesh R Signed-off-by: Mark Brown --- drivers/spi/spi-ti-qspi.c | 74 +++++++++++++---------------------------------- 1 file changed, 20 insertions(+), 54 deletions(-) diff --git a/drivers/spi/spi-ti-qspi.c b/drivers/spi/spi-ti-qspi.c index aa6d284131e0..89cf0c821524 100644 --- a/drivers/spi/spi-ti-qspi.c +++ b/drivers/spi/spi-ti-qspi.c @@ -39,8 +39,6 @@ struct ti_qspi_regs { }; struct ti_qspi { - struct completion transfer_complete; - /* list synchronization */ struct mutex list_lock; @@ -62,10 +60,6 @@ struct ti_qspi { #define QSPI_PID (0x0) #define QSPI_SYSCONFIG (0x10) -#define QSPI_INTR_STATUS_RAW_SET (0x20) -#define QSPI_INTR_STATUS_ENABLED_CLEAR (0x24) -#define QSPI_INTR_ENABLE_SET_REG (0x28) -#define QSPI_INTR_ENABLE_CLEAR_REG (0x2c) #define QSPI_SPI_CLOCK_CNTRL_REG (0x40) #define QSPI_SPI_DC_REG (0x44) #define QSPI_SPI_CMD_REG (0x48) @@ -97,7 +91,6 @@ struct ti_qspi { #define QSPI_RD_DUAL (3 << 16) #define QSPI_RD_QUAD (7 << 16) #define QSPI_INVAL (4 << 16) -#define QSPI_WC_CMD_INT_EN (1 << 14) #define QSPI_FLEN(n) ((n - 1) << 0) #define QSPI_WLEN_MAX_BITS 128 #define QSPI_WLEN_MAX_BYTES 16 @@ -106,10 +99,6 @@ struct ti_qspi { #define BUSY 0x01 #define WC 0x02 -/* INTERRUPT REGISTER */ -#define QSPI_WC_INT_EN (1 << 1) -#define QSPI_WC_INT_DISABLE (1 << 1) - /* Device Control */ #define QSPI_DD(m, n) (m << (3 + n * 8)) #define QSPI_CKPHA(n) (1 << (2 + n * 8)) @@ -217,6 +206,24 @@ static inline u32 qspi_is_busy(struct ti_qspi *qspi) return stat & BUSY; } +static inline int ti_qspi_poll_wc(struct ti_qspi *qspi) +{ + u32 stat; + unsigned long timeout = jiffies + QSPI_COMPLETION_TIMEOUT; + + do { + stat = ti_qspi_read(qspi, QSPI_SPI_STATUS_REG); + if (stat & WC) + return 0; + cpu_relax(); + } while (time_after(timeout, jiffies)); + + stat = ti_qspi_read(qspi, QSPI_SPI_STATUS_REG); + if (stat & WC) + return 0; + return -ETIMEDOUT; +} + static int qspi_write_msg(struct ti_qspi *qspi, struct spi_transfer *t) { int wlen, count, xfer_len; @@ -275,8 +282,7 @@ static int qspi_write_msg(struct ti_qspi *qspi, struct spi_transfer *t) } ti_qspi_write(qspi, cmd, QSPI_SPI_CMD_REG); - if (!wait_for_completion_timeout(&qspi->transfer_complete, - QSPI_COMPLETION_TIMEOUT)) { + if (ti_qspi_poll_wc(qspi)) { dev_err(qspi->dev, "write timed out\n"); return -ETIMEDOUT; } @@ -315,8 +321,7 @@ static int qspi_read_msg(struct ti_qspi *qspi, struct spi_transfer *t) return -EBUSY; ti_qspi_write(qspi, cmd, QSPI_SPI_CMD_REG); - if (!wait_for_completion_timeout(&qspi->transfer_complete, - QSPI_COMPLETION_TIMEOUT)) { + if (ti_qspi_poll_wc(qspi)) { dev_err(qspi->dev, "read timed out\n"); return -ETIMEDOUT; } @@ -388,9 +393,7 @@ static int ti_qspi_start_transfer_one(struct spi_master *master, qspi->cmd = 0; qspi->cmd |= QSPI_EN_CS(spi->chip_select); qspi->cmd |= QSPI_FLEN(frame_length); - qspi->cmd |= QSPI_WC_CMD_INT_EN; - ti_qspi_write(qspi, QSPI_WC_INT_EN, QSPI_INTR_ENABLE_SET_REG); ti_qspi_write(qspi, qspi->dc, QSPI_SPI_DC_REG); mutex_lock(&qspi->list_lock); @@ -418,31 +421,6 @@ static int ti_qspi_start_transfer_one(struct spi_master *master, return status; } -static irqreturn_t ti_qspi_isr(int irq, void *dev_id) -{ - struct ti_qspi *qspi = dev_id; - u16 int_stat; - u32 stat; - - irqreturn_t ret = IRQ_HANDLED; - - int_stat = ti_qspi_read(qspi, QSPI_INTR_STATUS_ENABLED_CLEAR); - stat = ti_qspi_read(qspi, QSPI_SPI_STATUS_REG); - - if (!int_stat) { - dev_dbg(qspi->dev, "No IRQ triggered\n"); - ret = IRQ_NONE; - goto out; - } - - ti_qspi_write(qspi, QSPI_WC_INT_DISABLE, - QSPI_INTR_STATUS_ENABLED_CLEAR); - if (stat & WC) - complete(&qspi->transfer_complete); -out: - return ret; -} - static int ti_qspi_runtime_resume(struct device *dev) { struct ti_qspi *qspi; @@ -551,22 +529,12 @@ static int ti_qspi_probe(struct platform_device *pdev) } } - ret = devm_request_irq(&pdev->dev, irq, ti_qspi_isr, 0, - dev_name(&pdev->dev), qspi); - if (ret < 0) { - dev_err(&pdev->dev, "Failed to register ISR for IRQ %d\n", - irq); - goto free_master; - } - qspi->fclk = devm_clk_get(&pdev->dev, "fck"); if (IS_ERR(qspi->fclk)) { ret = PTR_ERR(qspi->fclk); dev_err(&pdev->dev, "could not get clk: %d\n", ret); } - init_completion(&qspi->transfer_complete); - pm_runtime_use_autosuspend(&pdev->dev); pm_runtime_set_autosuspend_delay(&pdev->dev, QSPI_AUTOSUSPEND_TIMEOUT); pm_runtime_enable(&pdev->dev); @@ -596,8 +564,6 @@ static int ti_qspi_remove(struct platform_device *pdev) return ret; } - ti_qspi_write(qspi, QSPI_WC_INT_DISABLE, QSPI_INTR_ENABLE_CLEAR_REG); - pm_runtime_put(qspi->dev); pm_runtime_disable(&pdev->dev); -- cgit v1.2.1 From 8cae0424787ba02987a6f3a6117f31f6a77260dc Mon Sep 17 00:00:00 2001 From: Luis de Bethencourt Date: Fri, 16 Oct 2015 16:22:07 +0100 Subject: spi: davinci: use spi->cs_gpio directly Use spi->cs_gpio directly to remove the following build warning: drivers/spi/spi-davinci.c:219:6: warning: 'gpio' may be used uninitialized in this function Signed-off-by: Luis de Bethencourt Suggested-by: Geert Uytterhoeven Signed-off-by: Mark Brown --- drivers/spi/spi-davinci.c | 15 ++++----------- 1 file changed, 4 insertions(+), 11 deletions(-) diff --git a/drivers/spi/spi-davinci.c b/drivers/spi/spi-davinci.c index 3cf9faa6cc3f..8e2ddd1147aa 100644 --- a/drivers/spi/spi-davinci.c +++ b/drivers/spi/spi-davinci.c @@ -215,18 +215,10 @@ static void davinci_spi_chipselect(struct spi_device *spi, int value) struct davinci_spi_config *spicfg = spi->controller_data; u8 chip_sel = spi->chip_select; u16 spidat1 = CS_DEFAULT; - bool gpio_chipsel = false; - int gpio; dspi = spi_master_get_devdata(spi->master); pdata = &dspi->pdata; - if (spi->cs_gpio >= 0) { - /* SPI core parse and update master->cs_gpio */ - gpio_chipsel = true; - gpio = spi->cs_gpio; - } - /* program delay transfers if tx_delay is non zero */ if (spicfg->wdelay) spidat1 |= SPIDAT1_WDEL; @@ -235,11 +227,12 @@ static void davinci_spi_chipselect(struct spi_device *spi, int value) * Board specific chip select logic decides the polarity and cs * line for the controller */ - if (gpio_chipsel) { + if (spi->cs_gpio >= 0) { if (value == BITBANG_CS_ACTIVE) - gpio_set_value(gpio, spi->mode & SPI_CS_HIGH); + gpio_set_value(spi->cs_gpio, spi->mode & SPI_CS_HIGH); else - gpio_set_value(gpio, !(spi->mode & SPI_CS_HIGH)); + gpio_set_value(spi->cs_gpio, + !(spi->mode & SPI_CS_HIGH)); } else { if (value == BITBANG_CS_ACTIVE) { spidat1 |= SPIDAT1_CSHOLD_MASK; -- cgit v1.2.1 From 5f0966e61f0a65bef26b9fedbc1a4ab22a6f918b Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Oct 2015 23:12:17 +0300 Subject: spi: dw: use plain struct device * at earlier ->probe() The name of the master device is set during registrationg which happens after we issue the error message. Change it to plain struct device * to see which device registration failed. Signed-off-by: Andy Shevchenko Signed-off-by: Mark Brown --- drivers/spi/spi-dw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c index 1153d36ec8a6..749a831f26ce 100644 --- a/drivers/spi/spi-dw.c +++ b/drivers/spi/spi-dw.c @@ -520,7 +520,7 @@ int dw_spi_add_host(struct device *dev, struct dw_spi *dws) ret = devm_request_irq(dev, dws->irq, dw_spi_irq, IRQF_SHARED, dws->name, master); if (ret < 0) { - dev_err(&master->dev, "can not get IRQ\n"); + dev_err(dev, "can not get IRQ\n"); goto err_free_master; } -- cgit v1.2.1 From 4adb1f8f880081ee9921ebd399786387e0cd6f52 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Oct 2015 23:12:18 +0300 Subject: spi: dw: remove unneeded cr0 member of struct chip_data Since we recalculate cr0 each time we start a transfer the chip_data->cr0 becomes redundant. Remove it and related pieces. This is a follow up to commit 0ed36990a93b (spi: dw: Remove needless if statements). Signed-off-by: Andy Shevchenko Signed-off-by: Mark Brown --- drivers/spi/spi-dw.c | 14 ++------------ 1 file changed, 2 insertions(+), 12 deletions(-) diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c index 749a831f26ce..c769c2a5da16 100644 --- a/drivers/spi/spi-dw.c +++ b/drivers/spi/spi-dw.c @@ -30,7 +30,6 @@ /* Slave spi_dev related */ struct chip_data { - u16 cr0; u8 cs; /* chip select pin */ u8 n_bytes; /* current is a 1/2/4 byte op */ u8 tmode; /* TR/TO/RO/EEPROM */ @@ -291,7 +290,7 @@ static int dw_spi_transfer_one(struct spi_master *master, u16 txlevel = 0; u16 clk_div = 0; u32 speed = 0; - u32 cr0 = 0; + u32 cr0; int ret; dws->dma_mapped = 0; @@ -306,8 +305,6 @@ static int dw_spi_transfer_one(struct spi_master *master, spi_enable_chip(dws, 0); - cr0 = chip->cr0; - /* Handle per transfer options for bpw and speed */ speed = chip->speed_hz; if ((transfer->speed_hz != speed) || !chip->clk_div) { @@ -328,6 +325,7 @@ static int dw_spi_transfer_one(struct spi_master *master, dws->n_bytes = 2; dws->dma_width = 2; } + /* Default SPI mode is SCPOL = 0, SCPH = 0 */ cr0 = (transfer->bits_per_word - 1) | (chip->type << SPI_FRF_OFFSET) | (spi->mode << SPI_MODE_OFFSET) @@ -449,14 +447,6 @@ static int dw_spi_setup(struct spi_device *spi) chip->bits_per_word = spi->bits_per_word; chip->tmode = 0; /* Tx & Rx */ - /* Default SPI mode is SCPOL = 0, SCPH = 0 */ - chip->cr0 = (chip->bits_per_word - 1) - | (chip->type << SPI_FRF_OFFSET) - | (spi->mode << SPI_MODE_OFFSET) - | (chip->tmode << SPI_TMOD_OFFSET); - - if (spi->mode & SPI_LOOP) - chip->cr0 |= 1 << SPI_SRL_OFFSET; if (gpio_is_valid(spi->cs_gpio)) { ret = gpio_direction_output(spi->cs_gpio, -- cgit v1.2.1 From 863cb2f72e636c8721482fd88e256facb59c5737 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Oct 2015 23:12:20 +0300 Subject: spi: dw: remove bits_per_word member of struct chip_data There is no need to carry over spi->bits_per_word and Co from ->setup() in struct chip_data since ->transfer_one() will anyway take the transfer parameters from struct spi_transfer. This is since SPI core validates both bits_per_word transfer parameter and defaults to spi->bits_per_word in case that per transfer parameter is not set. Signed-off-by: Andy Shevchenko Signed-off-by: Mark Brown --- drivers/spi/spi-dw.c | 16 ++-------------- 1 file changed, 2 insertions(+), 14 deletions(-) diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c index c769c2a5da16..c8f7f161213d 100644 --- a/drivers/spi/spi-dw.c +++ b/drivers/spi/spi-dw.c @@ -31,17 +31,14 @@ /* Slave spi_dev related */ struct chip_data { u8 cs; /* chip select pin */ - u8 n_bytes; /* current is a 1/2/4 byte op */ u8 tmode; /* TR/TO/RO/EEPROM */ u8 type; /* SPI/SSP/MicroWire */ u8 poll_mode; /* 1 means use poll mode */ - u32 dma_width; u32 rx_threshold; u32 tx_threshold; u8 enable_dma; - u8 bits_per_word; u16 clk_div; /* baud rate divider */ u32 speed_hz; /* baud rate */ void (*cs_control)(u32 command); @@ -294,8 +291,6 @@ static int dw_spi_transfer_one(struct spi_master *master, int ret; dws->dma_mapped = 0; - dws->n_bytes = chip->n_bytes; - dws->dma_width = chip->dma_width; dws->tx = (void *)transfer->tx_buf; dws->tx_end = dws->tx + transfer->len; @@ -324,6 +319,8 @@ static int dw_spi_transfer_one(struct spi_master *master, } else if (transfer->bits_per_word == 16) { dws->n_bytes = 2; dws->dma_width = 2; + } else { + return -EINVAL; } /* Default SPI mode is SCPOL = 0, SCPH = 0 */ cr0 = (transfer->bits_per_word - 1) @@ -437,15 +434,6 @@ static int dw_spi_setup(struct spi_device *spi) chip->tx_threshold = 0; } - if (spi->bits_per_word == 8) { - chip->n_bytes = 1; - chip->dma_width = 1; - } else if (spi->bits_per_word == 16) { - chip->n_bytes = 2; - chip->dma_width = 2; - } - chip->bits_per_word = spi->bits_per_word; - chip->tmode = 0; /* Tx & Rx */ if (gpio_is_valid(spi->cs_gpio)) { -- cgit v1.2.1 From de6feda884b0079f5f232a41d94da23d198ff230 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Oct 2015 23:12:21 +0300 Subject: spi: dw: eliminate speed variable in ->transfer_one() There is no point to have a separate variable for speed in ->transfer_one(). While here, remove !chip->clk_div from a condition since it is assigned simultaneously with chip->speed_hz. We can do this safely because a) transfer speed can't be higher than max_freq and therefore chip->clk_div can be 0 only when chip->speed_hz is 0, and b) transfer speed can't be 0, otherwise we will get division by zero exception. Signed-off-by: Andy Shevchenko Signed-off-by: Mark Brown --- drivers/spi/spi-dw.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c index c8f7f161213d..a6fd7cfa1b40 100644 --- a/drivers/spi/spi-dw.c +++ b/drivers/spi/spi-dw.c @@ -285,8 +285,7 @@ static int dw_spi_transfer_one(struct spi_master *master, struct chip_data *chip = spi_get_ctldata(spi); u8 imask = 0; u16 txlevel = 0; - u16 clk_div = 0; - u32 speed = 0; + u16 clk_div; u32 cr0; int ret; @@ -301,14 +300,11 @@ static int dw_spi_transfer_one(struct spi_master *master, spi_enable_chip(dws, 0); /* Handle per transfer options for bpw and speed */ - speed = chip->speed_hz; - if ((transfer->speed_hz != speed) || !chip->clk_div) { - speed = transfer->speed_hz; - + if (transfer->speed_hz != chip->speed_hz) { /* clk_div doesn't support odd number */ - clk_div = (dws->max_freq / speed + 1) & 0xfffe; + clk_div = (dws->max_freq / transfer->speed_hz + 1) & 0xfffe; - chip->speed_hz = speed; + chip->speed_hz = transfer->speed_hz; chip->clk_div = clk_div; spi_set_clk(dws, chip->clk_div); -- cgit v1.2.1 From d53c0ef319eb5ceb5a089ff3050a2e6808c9adb9 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Oct 2015 23:12:22 +0300 Subject: spi: dw: eliminate unused threshold variables The tx_threshold and rx_threshold variables are not used anywhere. Remove them. Signed-off-by: Andy Shevchenko Signed-off-by: Mark Brown --- drivers/spi/spi-dw.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c index a6fd7cfa1b40..c8e7715097e7 100644 --- a/drivers/spi/spi-dw.c +++ b/drivers/spi/spi-dw.c @@ -36,8 +36,6 @@ struct chip_data { u8 poll_mode; /* 1 means use poll mode */ - u32 rx_threshold; - u32 tx_threshold; u8 enable_dma; u16 clk_div; /* baud rate divider */ u32 speed_hz; /* baud rate */ @@ -425,9 +423,6 @@ static int dw_spi_setup(struct spi_device *spi) chip->poll_mode = chip_info->poll_mode; chip->type = chip_info->type; - - chip->rx_threshold = 0; - chip->tx_threshold = 0; } chip->tmode = 0; /* Tx & Rx */ -- cgit v1.2.1 From 1cc3f141f0cb5a822cdef30fb1d92ae6f4176bfa Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Oct 2015 23:12:23 +0300 Subject: spi: dw: introduce spi_shutdown_chip() This helper disables SPI controller and sets clock to 0. Signed-off-by: Andy Shevchenko Signed-off-by: Mark Brown --- drivers/spi/spi-dw.c | 13 ++++++------- drivers/spi/spi-dw.h | 6 ++++++ 2 files changed, 12 insertions(+), 7 deletions(-) diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c index c8e7715097e7..a730c353d3bf 100644 --- a/drivers/spi/spi-dw.c +++ b/drivers/spi/spi-dw.c @@ -546,22 +546,21 @@ void dw_spi_remove_host(struct dw_spi *dws) if (dws->dma_ops && dws->dma_ops->dma_exit) dws->dma_ops->dma_exit(dws); - spi_enable_chip(dws, 0); - /* Disable clk */ - spi_set_clk(dws, 0); + + spi_shutdown_chip(dws); } EXPORT_SYMBOL_GPL(dw_spi_remove_host); int dw_spi_suspend_host(struct dw_spi *dws) { - int ret = 0; + int ret; ret = spi_master_suspend(dws->master); if (ret) return ret; - spi_enable_chip(dws, 0); - spi_set_clk(dws, 0); - return ret; + + spi_shutdown_chip(dws); + return 0; } EXPORT_SYMBOL_GPL(dw_spi_suspend_host); diff --git a/drivers/spi/spi-dw.h b/drivers/spi/spi-dw.h index b75ed327d5a2..35589a270468 100644 --- a/drivers/spi/spi-dw.h +++ b/drivers/spi/spi-dw.h @@ -225,6 +225,12 @@ static inline void spi_reset_chip(struct dw_spi *dws) spi_enable_chip(dws, 1); } +static inline void spi_shutdown_chip(struct dw_spi *dws) +{ + spi_enable_chip(dws, 0); + spi_set_clk(dws, 0); +} + /* * Each SPI slave device to work with dw_api controller should * has such a structure claiming its working mode (poll or PIO/DMA), -- cgit v1.2.1 From 1c2df965387f9a5a657a644bab5a1b5b535365b2 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Oct 2015 23:12:24 +0300 Subject: spi: dw-pci: remove unused pdev member from struct dw_spi_pci The pdev member is not used anywhere, thus remove it. Moreover struct dw_spi_pci becomes an equivalent of struct dw_spi and therefore remove entire struct dw_spi_pci. Signed-off-by: Andy Shevchenko Signed-off-by: Mark Brown --- drivers/spi/spi-dw-pci.c | 29 +++++++++-------------------- 1 file changed, 9 insertions(+), 20 deletions(-) diff --git a/drivers/spi/spi-dw-pci.c b/drivers/spi/spi-dw-pci.c index 6d331e0db331..332ccb0539a7 100644 --- a/drivers/spi/spi-dw-pci.c +++ b/drivers/spi/spi-dw-pci.c @@ -23,11 +23,6 @@ #define DRIVER_NAME "dw_spi_pci" -struct dw_spi_pci { - struct pci_dev *pdev; - struct dw_spi dws; -}; - struct spi_pci_desc { int (*setup)(struct dw_spi *); u16 num_cs; @@ -48,7 +43,6 @@ static struct spi_pci_desc spi_pci_mid_desc_2 = { static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { - struct dw_spi_pci *dwpci; struct dw_spi *dws; struct spi_pci_desc *desc = (struct spi_pci_desc *)ent->driver_data; int pci_bar = 0; @@ -58,14 +52,10 @@ static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) if (ret) return ret; - dwpci = devm_kzalloc(&pdev->dev, sizeof(struct dw_spi_pci), - GFP_KERNEL); - if (!dwpci) + dws = devm_kzalloc(&pdev->dev, sizeof(*dws), GFP_KERNEL); + if (!dws) return -ENOMEM; - dwpci->pdev = pdev; - dws = &dwpci->dws; - /* Get basic io resource and map it */ dws->paddr = pci_resource_start(pdev, pci_bar); @@ -74,7 +64,6 @@ static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) return ret; dws->regs = pcim_iomap_table(pdev)[pci_bar]; - dws->irq = pdev->irq; /* @@ -99,7 +88,7 @@ static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) return ret; /* PCI hook and SPI hook use the same drv data */ - pci_set_drvdata(pdev, dwpci); + pci_set_drvdata(pdev, dws); dev_info(&pdev->dev, "found PCI SPI controller(ID: %04x:%04x)\n", pdev->vendor, pdev->device); @@ -109,26 +98,26 @@ static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) static void spi_pci_remove(struct pci_dev *pdev) { - struct dw_spi_pci *dwpci = pci_get_drvdata(pdev); + struct dw_spi *dws = pci_get_drvdata(pdev); - dw_spi_remove_host(&dwpci->dws); + dw_spi_remove_host(dws); } #ifdef CONFIG_PM_SLEEP static int spi_suspend(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); - struct dw_spi_pci *dwpci = pci_get_drvdata(pdev); + struct dw_spi *dws = pci_get_drvdata(pdev); - return dw_spi_suspend_host(&dwpci->dws); + return dw_spi_suspend_host(dws); } static int spi_resume(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); - struct dw_spi_pci *dwpci = pci_get_drvdata(pdev); + struct dw_spi *dws = pci_get_drvdata(pdev); - return dw_spi_resume_host(&dwpci->dws); + return dw_spi_resume_host(dws); } #endif -- cgit v1.2.1 From 9899995e98a4bc670a07e28ff91e3d0dbe08bea9 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Oct 2015 23:12:25 +0300 Subject: spi: dw-mmio: convert to unified device property API Convert the driver to use unfied device property API instead of OF one. Signed-off-by: Andy Shevchenko Signed-off-by: Mark Brown --- drivers/spi/spi-dw-mmio.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c index 7edede6e024b..a6d7029a85ac 100644 --- a/drivers/spi/spi-dw-mmio.c +++ b/drivers/spi/spi-dw-mmio.c @@ -19,6 +19,7 @@ #include #include #include +#include #include "spi-dw.h" @@ -74,13 +75,11 @@ static int dw_spi_mmio_probe(struct platform_device *pdev) dws->max_freq = clk_get_rate(dwsmmio->clk); - of_property_read_u32(pdev->dev.of_node, "reg-io-width", - &dws->reg_io_width); + device_property_read_u32(&pdev->dev, "reg-io-width", &dws->reg_io_width); num_cs = 4; - if (pdev->dev.of_node) - of_property_read_u32(pdev->dev.of_node, "num-cs", &num_cs); + device_property_read_u32(&pdev->dev, "num-cs", &num_cs); dws->num_cs = num_cs; -- cgit v1.2.1 From 02f20387e1bca550639c37b1945f20cd32ddfcce Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Tue, 20 Oct 2015 12:11:40 +0300 Subject: spi: dw: explicitly free IRQ handler in dw_spi_remove_host() The following warning occurs when DW SPI is compiled as a module and it's a PCI device. On the removal stage pcibios_free_irq() is called earlier than free_irq() due to the latter is called at managed resources free strage. ------------[ cut here ]------------ WARNING: CPU: 1 PID: 1003 at /home/andy/prj/linux/fs/proc/generic.c:575 remove_proc_entry+0x118/0x150() remove_proc_entry: removing non-empty directory 'irq/38', leaking at least 'dw_spi1' Modules linked in: spi_dw_midpci(-) spi_dw [last unloaded: dw_dmac_core] CPU: 1 PID: 1003 Comm: modprobe Not tainted 4.3.0-rc5-next-20151013+ #32 00000000 00000000 f5535d70 c12dc220 f5535db0 f5535da0 c104e912 c198a6bc f5535dcc 000003eb c198a638 0000023f c11b4098 c11b4098 f54f1ec8 f54f1ea0 f642ba20 f5535db8 c104e96e 00000009 f5535db0 c198a6bc f5535dcc f5535df0 Call Trace: [] dump_stack+0x41/0x61 [] warn_slowpath_common+0x82/0xb0 [] ? remove_proc_entry+0x118/0x150 [] ? remove_proc_entry+0x118/0x150 [] warn_slowpath_fmt+0x2e/0x30 [] remove_proc_entry+0x118/0x150 [] unregister_irq_proc+0xaa/0xc0 [] free_desc+0x1e/0x60 [] irq_free_descs+0x32/0x70 [] irq_domain_free_irqs+0x120/0x150 [] mp_unmap_irq+0x5c/0x60 [] intel_mid_pci_irq_disable+0x20/0x40 [] pcibios_free_irq+0xf/0x20 [] pci_device_remove+0x52/0xb0 [] __device_release_driver+0x77/0x100 [] driver_detach+0x87/0x90 [] bus_remove_driver+0x4a/0xc0 [] ? selinux_capable+0xd/0x10 [] driver_unregister+0x23/0x60 [] ? find_module_all+0x5a/0x80 [] pci_unregister_driver+0x13/0x60 [] dw_spi_driver_exit+0xd/0xf [spi_dw_midpci] [] SyS_delete_module+0x17a/0x210 Explicitly call free_irq() at removal stage of the DW SPI driver. Fixes: 04f421e7b0b1 (spi: dw: use managed resources) Cc: stable@vger.kernel.org Signed-off-by: Andy Shevchenko Signed-off-by: Mark Brown --- drivers/spi/spi-dw.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c index a730c353d3bf..221ff97557a3 100644 --- a/drivers/spi/spi-dw.c +++ b/drivers/spi/spi-dw.c @@ -486,8 +486,7 @@ int dw_spi_add_host(struct device *dev, struct dw_spi *dws) dws->dma_addr = (dma_addr_t)(dws->paddr + 0x60); snprintf(dws->name, sizeof(dws->name), "dw_spi%d", dws->bus_num); - ret = devm_request_irq(dev, dws->irq, dw_spi_irq, IRQF_SHARED, - dws->name, master); + ret = request_irq(dws->irq, dw_spi_irq, IRQF_SHARED, dws->name, master); if (ret < 0) { dev_err(dev, "can not get IRQ\n"); goto err_free_master; @@ -532,6 +531,7 @@ err_dma_exit: if (dws->dma_ops && dws->dma_ops->dma_exit) dws->dma_ops->dma_exit(dws); spi_enable_chip(dws, 0); + free_irq(dws->irq, master); err_free_master: spi_master_put(master); return ret; @@ -548,6 +548,8 @@ void dw_spi_remove_host(struct dw_spi *dws) dws->dma_ops->dma_exit(dws); spi_shutdown_chip(dws); + + free_irq(dws->irq, dws->master); } EXPORT_SYMBOL_GPL(dw_spi_remove_host); -- cgit v1.2.1 From f4aaa1c8a5c0e0a3fc565360df83965f3918c874 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Tue, 20 Oct 2015 12:11:41 +0300 Subject: spi: dw: remove a NULL check when call ->remove() Currently all users aware about calling dw_spi_remove_host() with properly set parameter. Remove unneeded check. Signed-off-by: Andy Shevchenko Signed-off-by: Mark Brown --- drivers/spi/spi-dw.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c index 221ff97557a3..cc2e98037afd 100644 --- a/drivers/spi/spi-dw.c +++ b/drivers/spi/spi-dw.c @@ -540,8 +540,6 @@ EXPORT_SYMBOL_GPL(dw_spi_add_host); void dw_spi_remove_host(struct dw_spi *dws) { - if (!dws) - return; dw_spi_debugfs_remove(dws); if (dws->dma_ops && dws->dma_ops->dma_exit) -- cgit v1.2.1 From 243f07be2423efe0b17e8ffafc9a36dad50406d3 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Tue, 20 Oct 2015 12:28:29 +0300 Subject: spi: core: use gpio_is_valid() helper Check if GPIO pin is valid by API helper function. Signed-off-by: Andy Shevchenko Signed-off-by: Mark Brown --- drivers/spi/spi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 64c1aedde481..9136f30a9fbd 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -606,7 +606,7 @@ static void spi_set_cs(struct spi_device *spi, bool enable) if (spi->mode & SPI_CS_HIGH) enable = !enable; - if (spi->cs_gpio >= 0) + if (gpio_is_valid(spi->cs_gpio)) gpio_set_value(spi->cs_gpio, !enable); else if (spi->master->set_cs) spi->master->set_cs(spi, !enable); -- cgit v1.2.1 From 468a32082b04c7febccfcd55b06ecbc438fcddcc Mon Sep 17 00:00:00 2001 From: Neil Armstrong Date: Fri, 9 Oct 2015 15:47:41 +0200 Subject: spi: omap2-mcspi: disable other channels CHCONF_FORCE in prepare_message Since the "Switch driver to use transfer_one" change, the cs_change behavior has changed and a channel chip select can still be asserted when changing channel from a previous last transfer in a message having the cs_change attribute. Since there is no sense having multiple chip select being asserted at the same time, disable all the remaining forced chip selects in a the prepare_message called right before a spi_transfer_one_message call. It ignores the current channel configuration in order to keep the possibility to leave the chip select asserted between messages. It fixes this bug on a DM8168 SoC ES2.1 Soc and an OMAP4 ES2.1 SoC. It was hanging all the other channels transfers when a CHCONF_FORCE is present on the wrong channel. Fixes: b28cb9414db9 ("spi: omap2-mcspi: Switch driver to use transfer_one") Signed-off-by: Neil Armstrong Reviewed-by: Michael Welling Signed-off-by: Mark Brown --- drivers/spi/spi-omap2-mcspi.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c index 3d09e0b69b73..1f8903d356e5 100644 --- a/drivers/spi/spi-omap2-mcspi.c +++ b/drivers/spi/spi-omap2-mcspi.c @@ -1217,6 +1217,33 @@ out: return status; } +static int omap2_mcspi_prepare_message(struct spi_master *master, + struct spi_message *msg) +{ + struct omap2_mcspi *mcspi = spi_master_get_devdata(master); + struct omap2_mcspi_regs *ctx = &mcspi->ctx; + struct omap2_mcspi_cs *cs; + + /* Only a single channel can have the FORCE bit enabled + * in its chconf0 register. + * Scan all channels and disable them except the current one. + * A FORCE can remain from a last transfer having cs_change enabled + */ + list_for_each_entry(cs, &ctx->cs, node) { + if (msg->spi->controller_state == cs) + continue; + + if ((cs->chconf0 & OMAP2_MCSPI_CHCONF_FORCE)) { + cs->chconf0 &= ~OMAP2_MCSPI_CHCONF_FORCE; + writel_relaxed(cs->chconf0, + cs->base + OMAP2_MCSPI_CHCONF0); + readl_relaxed(cs->base + OMAP2_MCSPI_CHCONF0); + } + } + + return 0; +} + static int omap2_mcspi_transfer_one(struct spi_master *master, struct spi_device *spi, struct spi_transfer *t) { @@ -1344,6 +1371,7 @@ static int omap2_mcspi_probe(struct platform_device *pdev) master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 32); master->setup = omap2_mcspi_setup; master->auto_runtime_pm = true; + master->prepare_message = omap2_mcspi_prepare_message; master->transfer_one = omap2_mcspi_transfer_one; master->set_cs = omap2_mcspi_set_cs; master->cleanup = omap2_mcspi_cleanup; -- cgit v1.2.1 From 06515f83908d038d9e12ffa3dcca27a1b67f2de0 Mon Sep 17 00:00:00 2001 From: David Mosberger-Tang Date: Tue, 20 Oct 2015 14:26:47 +0200 Subject: spi: atmel: Fix DMA-setup for transfers with more than 8 bits per word The DMA-slave configuration depends on the whether <= 8 or > 8 bits are transferred per word, so we need to call atmel_spi_dma_slave_config() with the correct value. Signed-off-by: David Mosberger Signed-off-by: Nicolas Ferre Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- drivers/spi/spi-atmel.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c index bf9ed380bb1c..41d95a662be7 100644 --- a/drivers/spi/spi-atmel.c +++ b/drivers/spi/spi-atmel.c @@ -773,7 +773,8 @@ static int atmel_spi_next_xfer_dma_submit(struct spi_master *master, *plen = len; - if (atmel_spi_dma_slave_config(as, &slave_config, 8)) + if (atmel_spi_dma_slave_config(as, &slave_config, + xfer->bits_per_word)) goto err_exit; /* Send both scatterlists */ -- cgit v1.2.1 From 44d8fb30941d85800fbde0a1e3454b1fb23c5ecd Mon Sep 17 00:00:00 2001 From: Jonas Gorski Date: Mon, 12 Oct 2015 12:24:23 +0200 Subject: spi/bcm63xx: move register definitions into the driver Move all register definitions and structs into the driver. This allows us dropping the platform_data struct and drop any arch specific includes. Make use of different device names to identify the version of the block we have. Since we now have full control over the message width, we can drop the size check, which was broken anyway, since it never set ret to any error code. Also since we now have no arch depedendent resources, we can now allow compiling it for any arch, hidden behind COMPILE_TEST. Signed-off-by: Jonas Gorski Signed-off-by: Mark Brown --- arch/mips/bcm63xx/dev-spi.c | 34 +--- .../include/asm/mach-bcm63xx/bcm63xx_dev_spi.h | 42 ----- drivers/spi/Kconfig | 2 +- drivers/spi/spi-bcm63xx.c | 197 ++++++++++++++++++--- 4 files changed, 181 insertions(+), 94 deletions(-) diff --git a/arch/mips/bcm63xx/dev-spi.c b/arch/mips/bcm63xx/dev-spi.c index b21225647e03..232385441e46 100644 --- a/arch/mips/bcm63xx/dev-spi.c +++ b/arch/mips/bcm63xx/dev-spi.c @@ -18,29 +18,6 @@ #include #include -/* - * register offsets - */ -static const unsigned long bcm6348_regs_spi[] = { - __GEN_SPI_REGS_TABLE(6348) -}; - -static const unsigned long bcm6358_regs_spi[] = { - __GEN_SPI_REGS_TABLE(6358) -}; - -const unsigned long *bcm63xx_regs_spi; -EXPORT_SYMBOL(bcm63xx_regs_spi); - -static __init void bcm63xx_spi_regs_init(void) -{ - if (BCMCPU_IS_6338() || BCMCPU_IS_6348()) - bcm63xx_regs_spi = bcm6348_regs_spi; - if (BCMCPU_IS_3368() || BCMCPU_IS_6358() || - BCMCPU_IS_6362() || BCMCPU_IS_6368()) - bcm63xx_regs_spi = bcm6358_regs_spi; -} - static struct resource spi_resources[] = { { .start = -1, /* filled at runtime */ @@ -54,7 +31,6 @@ static struct resource spi_resources[] = { }; static struct platform_device bcm63xx_spi_device = { - .name = "bcm63xx-spi", .id = -1, .num_resources = ARRAY_SIZE(spi_resources), .resource = spi_resources, @@ -69,14 +45,16 @@ int __init bcm63xx_spi_register(void) spi_resources[0].end = spi_resources[0].start; spi_resources[1].start = bcm63xx_get_irq_number(IRQ_SPI); - if (BCMCPU_IS_6338() || BCMCPU_IS_6348()) + if (BCMCPU_IS_6338() || BCMCPU_IS_6348()) { + bcm63xx_spi_device.name = "bcm6348-spi", spi_resources[0].end += BCM_6348_RSET_SPI_SIZE - 1; + } if (BCMCPU_IS_3368() || BCMCPU_IS_6358() || BCMCPU_IS_6362() || - BCMCPU_IS_6368()) + BCMCPU_IS_6368()) { + bcm63xx_spi_device.name = "bcm6358-spi", spi_resources[0].end += BCM_6358_RSET_SPI_SIZE - 1; - - bcm63xx_spi_regs_init(); + } return platform_device_register(&bcm63xx_spi_device); } diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_spi.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_spi.h index 1d121fd5b6f5..dd299548860d 100644 --- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_spi.h +++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_spi.h @@ -7,46 +7,4 @@ int __init bcm63xx_spi_register(void); -enum bcm63xx_regs_spi { - SPI_CMD, - SPI_INT_STATUS, - SPI_INT_MASK_ST, - SPI_INT_MASK, - SPI_ST, - SPI_CLK_CFG, - SPI_FILL_BYTE, - SPI_MSG_TAIL, - SPI_RX_TAIL, - SPI_MSG_CTL, - SPI_MSG_DATA, - SPI_RX_DATA, - SPI_MSG_TYPE_SHIFT, - SPI_MSG_CTL_WIDTH, - SPI_MSG_DATA_SIZE, -}; - -#define __GEN_SPI_REGS_TABLE(__cpu) \ - [SPI_CMD] = SPI_## __cpu ##_CMD, \ - [SPI_INT_STATUS] = SPI_## __cpu ##_INT_STATUS, \ - [SPI_INT_MASK_ST] = SPI_## __cpu ##_INT_MASK_ST, \ - [SPI_INT_MASK] = SPI_## __cpu ##_INT_MASK, \ - [SPI_ST] = SPI_## __cpu ##_ST, \ - [SPI_CLK_CFG] = SPI_## __cpu ##_CLK_CFG, \ - [SPI_FILL_BYTE] = SPI_## __cpu ##_FILL_BYTE, \ - [SPI_MSG_TAIL] = SPI_## __cpu ##_MSG_TAIL, \ - [SPI_RX_TAIL] = SPI_## __cpu ##_RX_TAIL, \ - [SPI_MSG_CTL] = SPI_## __cpu ##_MSG_CTL, \ - [SPI_MSG_DATA] = SPI_## __cpu ##_MSG_DATA, \ - [SPI_RX_DATA] = SPI_## __cpu ##_RX_DATA, \ - [SPI_MSG_TYPE_SHIFT] = SPI_## __cpu ##_MSG_TYPE_SHIFT, \ - [SPI_MSG_CTL_WIDTH] = SPI_## __cpu ##_MSG_CTL_WIDTH, \ - [SPI_MSG_DATA_SIZE] = SPI_## __cpu ##_MSG_DATA_SIZE, - -static inline unsigned long bcm63xx_spireg(enum bcm63xx_regs_spi reg) -{ - extern const unsigned long *bcm63xx_regs_spi; - - return bcm63xx_regs_spi[reg]; -} - #endif /* BCM63XX_DEV_SPI_H */ diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index 4887f317ea58..5c1db987beff 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -125,7 +125,7 @@ config SPI_BCM53XX config SPI_BCM63XX tristate "Broadcom BCM63xx SPI controller" - depends on BCM63XX + depends on BCM63XX || COMPILE_TEST help Enable support for the SPI controller on the Broadcom BCM63xx SoCs. diff --git a/drivers/spi/spi-bcm63xx.c b/drivers/spi/spi-bcm63xx.c index b3da04494fa9..06858e04ec59 100644 --- a/drivers/spi/spi-bcm63xx.c +++ b/drivers/spi/spi-bcm63xx.c @@ -27,7 +27,111 @@ #include #include -#include +/* BCM 6338/6348 SPI core */ +#define SPI_6348_RSET_SIZE 64 +#define SPI_6348_CMD 0x00 /* 16-bits register */ +#define SPI_6348_INT_STATUS 0x02 +#define SPI_6348_INT_MASK_ST 0x03 +#define SPI_6348_INT_MASK 0x04 +#define SPI_6348_ST 0x05 +#define SPI_6348_CLK_CFG 0x06 +#define SPI_6348_FILL_BYTE 0x07 +#define SPI_6348_MSG_TAIL 0x09 +#define SPI_6348_RX_TAIL 0x0b +#define SPI_6348_MSG_CTL 0x40 /* 8-bits register */ +#define SPI_6348_MSG_CTL_WIDTH 8 +#define SPI_6348_MSG_DATA 0x41 +#define SPI_6348_MSG_DATA_SIZE 0x3f +#define SPI_6348_RX_DATA 0x80 +#define SPI_6348_RX_DATA_SIZE 0x3f + +/* BCM 3368/6358/6262/6368 SPI core */ +#define SPI_6358_RSET_SIZE 1804 +#define SPI_6358_MSG_CTL 0x00 /* 16-bits register */ +#define SPI_6358_MSG_CTL_WIDTH 16 +#define SPI_6358_MSG_DATA 0x02 +#define SPI_6358_MSG_DATA_SIZE 0x21e +#define SPI_6358_RX_DATA 0x400 +#define SPI_6358_RX_DATA_SIZE 0x220 +#define SPI_6358_CMD 0x700 /* 16-bits register */ +#define SPI_6358_INT_STATUS 0x702 +#define SPI_6358_INT_MASK_ST 0x703 +#define SPI_6358_INT_MASK 0x704 +#define SPI_6358_ST 0x705 +#define SPI_6358_CLK_CFG 0x706 +#define SPI_6358_FILL_BYTE 0x707 +#define SPI_6358_MSG_TAIL 0x709 +#define SPI_6358_RX_TAIL 0x70B + +/* Shared SPI definitions */ + +/* Message configuration */ +#define SPI_FD_RW 0x00 +#define SPI_HD_W 0x01 +#define SPI_HD_R 0x02 +#define SPI_BYTE_CNT_SHIFT 0 +#define SPI_6348_MSG_TYPE_SHIFT 6 +#define SPI_6358_MSG_TYPE_SHIFT 14 + +/* Command */ +#define SPI_CMD_NOOP 0x00 +#define SPI_CMD_SOFT_RESET 0x01 +#define SPI_CMD_HARD_RESET 0x02 +#define SPI_CMD_START_IMMEDIATE 0x03 +#define SPI_CMD_COMMAND_SHIFT 0 +#define SPI_CMD_COMMAND_MASK 0x000f +#define SPI_CMD_DEVICE_ID_SHIFT 4 +#define SPI_CMD_PREPEND_BYTE_CNT_SHIFT 8 +#define SPI_CMD_ONE_BYTE_SHIFT 11 +#define SPI_CMD_ONE_WIRE_SHIFT 12 +#define SPI_DEV_ID_0 0 +#define SPI_DEV_ID_1 1 +#define SPI_DEV_ID_2 2 +#define SPI_DEV_ID_3 3 + +/* Interrupt mask */ +#define SPI_INTR_CMD_DONE 0x01 +#define SPI_INTR_RX_OVERFLOW 0x02 +#define SPI_INTR_TX_UNDERFLOW 0x04 +#define SPI_INTR_TX_OVERFLOW 0x08 +#define SPI_INTR_RX_UNDERFLOW 0x10 +#define SPI_INTR_CLEAR_ALL 0x1f + +/* Status */ +#define SPI_RX_EMPTY 0x02 +#define SPI_CMD_BUSY 0x04 +#define SPI_SERIAL_BUSY 0x08 + +/* Clock configuration */ +#define SPI_CLK_20MHZ 0x00 +#define SPI_CLK_0_391MHZ 0x01 +#define SPI_CLK_0_781MHZ 0x02 /* default */ +#define SPI_CLK_1_563MHZ 0x03 +#define SPI_CLK_3_125MHZ 0x04 +#define SPI_CLK_6_250MHZ 0x05 +#define SPI_CLK_12_50MHZ 0x06 +#define SPI_CLK_MASK 0x07 +#define SPI_SSOFFTIME_MASK 0x38 +#define SPI_SSOFFTIME_SHIFT 3 +#define SPI_BYTE_SWAP 0x80 + +enum bcm63xx_regs_spi { + SPI_CMD, + SPI_INT_STATUS, + SPI_INT_MASK_ST, + SPI_INT_MASK, + SPI_ST, + SPI_CLK_CFG, + SPI_FILL_BYTE, + SPI_MSG_TAIL, + SPI_RX_TAIL, + SPI_MSG_CTL, + SPI_MSG_DATA, + SPI_RX_DATA, + SPI_MSG_TYPE_SHIFT, + SPI_MSG_CTL_WIDTH, + SPI_MSG_DATA_SIZE, +}; #define BCM63XX_SPI_MAX_PREPEND 15 @@ -41,6 +145,7 @@ struct bcm63xx_spi { int irq; /* Platform data */ + const unsigned long *reg_offsets; unsigned fifo_size; unsigned int msg_type_shift; unsigned int msg_ctl_width; @@ -54,34 +159,34 @@ struct bcm63xx_spi { }; static inline u8 bcm_spi_readb(struct bcm63xx_spi *bs, - unsigned int offset) + unsigned int offset) { - return readb(bs->regs + bcm63xx_spireg(offset)); + return readb(bs->regs + bs->reg_offsets[offset]); } static inline u16 bcm_spi_readw(struct bcm63xx_spi *bs, unsigned int offset) { #ifdef CONFIG_CPU_BIG_ENDIAN - return ioread16be(bs->regs + bcm63xx_spireg(offset)); + return ioread16be(bs->regs + bs->reg_offsets[offset]); #else - return readw(bs->regs + bcm63xx_spireg(offset)); + return readw(bs->regs + bs->reg_offsets[offset]); #endif } static inline void bcm_spi_writeb(struct bcm63xx_spi *bs, u8 value, unsigned int offset) { - writeb(value, bs->regs + bcm63xx_spireg(offset)); + writeb(value, bs->regs + bs->reg_offsets[offset]); } static inline void bcm_spi_writew(struct bcm63xx_spi *bs, u16 value, unsigned int offset) { #ifdef CONFIG_CPU_BIG_ENDIAN - iowrite16be(value, bs->regs + bcm63xx_spireg(offset)); + iowrite16be(value, bs->regs + bs->reg_offsets[offset]); #else - writew(value, bs->regs + bcm63xx_spireg(offset)); + writew(value, bs->regs + bs->reg_offsets[offset]); #endif } @@ -324,10 +429,59 @@ static irqreturn_t bcm63xx_spi_interrupt(int irq, void *dev_id) return IRQ_HANDLED; } +static const unsigned long bcm6348_spi_reg_offsets[] = { + [SPI_CMD] = SPI_6348_CMD, + [SPI_INT_STATUS] = SPI_6348_INT_STATUS, + [SPI_INT_MASK_ST] = SPI_6348_INT_MASK_ST, + [SPI_INT_MASK] = SPI_6348_INT_MASK, + [SPI_ST] = SPI_6348_ST, + [SPI_CLK_CFG] = SPI_6348_CLK_CFG, + [SPI_FILL_BYTE] = SPI_6348_FILL_BYTE, + [SPI_MSG_TAIL] = SPI_6348_MSG_TAIL, + [SPI_RX_TAIL] = SPI_6348_RX_TAIL, + [SPI_MSG_CTL] = SPI_6348_MSG_CTL, + [SPI_MSG_DATA] = SPI_6348_MSG_DATA, + [SPI_RX_DATA] = SPI_6348_RX_DATA, + [SPI_MSG_TYPE_SHIFT] = SPI_6348_MSG_TYPE_SHIFT, + [SPI_MSG_CTL_WIDTH] = SPI_6348_MSG_CTL_WIDTH, + [SPI_MSG_DATA_SIZE] = SPI_6348_MSG_DATA_SIZE, +}; + +static const unsigned long bcm6358_spi_reg_offsets[] = { + [SPI_CMD] = SPI_6358_CMD, + [SPI_INT_STATUS] = SPI_6358_INT_STATUS, + [SPI_INT_MASK_ST] = SPI_6358_INT_MASK_ST, + [SPI_INT_MASK] = SPI_6358_INT_MASK, + [SPI_ST] = SPI_6358_ST, + [SPI_CLK_CFG] = SPI_6358_CLK_CFG, + [SPI_FILL_BYTE] = SPI_6358_FILL_BYTE, + [SPI_MSG_TAIL] = SPI_6358_MSG_TAIL, + [SPI_RX_TAIL] = SPI_6358_RX_TAIL, + [SPI_MSG_CTL] = SPI_6358_MSG_CTL, + [SPI_MSG_DATA] = SPI_6358_MSG_DATA, + [SPI_RX_DATA] = SPI_6358_RX_DATA, + [SPI_MSG_TYPE_SHIFT] = SPI_6358_MSG_TYPE_SHIFT, + [SPI_MSG_CTL_WIDTH] = SPI_6358_MSG_CTL_WIDTH, + [SPI_MSG_DATA_SIZE] = SPI_6358_MSG_DATA_SIZE, +}; + +static const struct platform_device_id bcm63xx_spi_dev_match[] = { + { + .name = "bcm6348-spi", + .driver_data = (unsigned long)bcm6348_spi_reg_offsets, + }, + { + .name = "bcm6358-spi", + .driver_data = (unsigned long)bcm6358_spi_reg_offsets, + }, + { + }, +}; static int bcm63xx_spi_probe(struct platform_device *pdev) { struct resource *r; + const unsigned long *bcm63xx_spireg; struct device *dev = &pdev->dev; int irq; struct spi_master *master; @@ -335,6 +489,11 @@ static int bcm63xx_spi_probe(struct platform_device *pdev) struct bcm63xx_spi *bs; int ret; + if (!pdev->id_entry->driver_data) + return -EINVAL; + + bcm63xx_spireg = (const unsigned long *)pdev->id_entry->driver_data; + irq = platform_get_irq(pdev, 0); if (irq < 0) { dev_err(dev, "no irq\n"); @@ -368,7 +527,8 @@ static int bcm63xx_spi_probe(struct platform_device *pdev) bs->irq = irq; bs->clk = clk; - bs->fifo_size = bcm63xx_spireg(SPI_MSG_DATA_SIZE); + bs->reg_offsets = bcm63xx_spireg; + bs->fifo_size = bs->reg_offsets[SPI_MSG_DATA_SIZE]; ret = devm_request_irq(&pdev->dev, irq, bcm63xx_spi_interrupt, 0, pdev->name, master); @@ -383,20 +543,10 @@ static int bcm63xx_spi_probe(struct platform_device *pdev) master->mode_bits = MODEBITS; master->bits_per_word_mask = SPI_BPW_MASK(8); master->auto_runtime_pm = true; - bs->msg_type_shift = bcm63xx_spireg(SPI_MSG_TYPE_SHIFT); - bs->msg_ctl_width = bcm63xx_spireg(SPI_MSG_CTL_WIDTH); - bs->tx_io = (u8 *)(bs->regs + bcm63xx_spireg(SPI_MSG_DATA)); - bs->rx_io = (const u8 *)(bs->regs + bcm63xx_spireg(SPI_RX_DATA)); - - switch (bs->msg_ctl_width) { - case 8: - case 16: - break; - default: - dev_err(dev, "unsupported MSG_CTL width: %d\n", - bs->msg_ctl_width); - goto out_err; - } + bs->msg_type_shift = bs->reg_offsets[SPI_MSG_TYPE_SHIFT]; + bs->msg_ctl_width = bs->reg_offsets[SPI_MSG_CTL_WIDTH]; + bs->tx_io = (u8 *)(bs->regs + bs->reg_offsets[SPI_MSG_DATA]); + bs->rx_io = (const u8 *)(bs->regs + bs->reg_offsets[SPI_RX_DATA]); /* Initialize hardware */ ret = clk_prepare_enable(bs->clk); @@ -476,6 +626,7 @@ static struct platform_driver bcm63xx_spi_driver = { .name = "bcm63xx-spi", .pm = &bcm63xx_spi_pm_ops, }, + .id_table = bcm63xx_spi_dev_match, .probe = bcm63xx_spi_probe, .remove = bcm63xx_spi_remove, }; -- cgit v1.2.1 From 1476253cef9dbfc1f7f6a1bd19252ca528cd63bd Mon Sep 17 00:00:00 2001 From: "Andrew Y. Kuksov" Date: Tue, 14 Jul 2015 16:23:25 +0300 Subject: spi: imx: fix ecspi mode setup Fixed problem with setting spi mode 0 or 1 after setting mode 2 or 3 SPI_MODE_0 and SPI_MODE_1 requires clock low when inactive. SPI_MODE_2 and SPI_MODE_3 requires clk high when inactive. Currently driver can just set bits in fields SCLK_PHA (SPI Clock/Data Phase Control), SCLK_POL (SPI Clock Polarity Control), SCLK_CTL (controls the inactive state of SCLK) ans SS_POL (SPI SS Polarity Select) of ECSPIx_CONFIGREG register. This patch allows driver to clear corresponding bits in these fields. Signed-off-by: Andrew Y. Kuksov Signed-off-by: Mark Brown --- drivers/spi/spi-imx.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c index f9deb84e4e55..0e5723ab47f0 100644 --- a/drivers/spi/spi-imx.c +++ b/drivers/spi/spi-imx.c @@ -336,13 +336,20 @@ static int __maybe_unused mx51_ecspi_config(struct spi_imx_data *spi_imx, if (config->mode & SPI_CPHA) cfg |= MX51_ECSPI_CONFIG_SCLKPHA(config->cs); + else + cfg &= ~MX51_ECSPI_CONFIG_SCLKPHA(config->cs); if (config->mode & SPI_CPOL) { cfg |= MX51_ECSPI_CONFIG_SCLKPOL(config->cs); cfg |= MX51_ECSPI_CONFIG_SCLKCTL(config->cs); + } else { + cfg &= ~MX51_ECSPI_CONFIG_SCLKPOL(config->cs); + cfg &= ~MX51_ECSPI_CONFIG_SCLKCTL(config->cs); } if (config->mode & SPI_CS_HIGH) cfg |= MX51_ECSPI_CONFIG_SSBPOL(config->cs); + else + cfg &= ~MX51_ECSPI_CONFIG_SSBPOL(config->cs); writel(ctrl, spi_imx->base + MX51_ECSPI_CTRL); writel(cfg, spi_imx->base + MX51_ECSPI_CONFIG); -- cgit v1.2.1 From d74c4b1c61ecc5ad8158ac649245fdfc9601c1b5 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Thu, 22 Oct 2015 16:44:39 +0300 Subject: spi: pxa2xx: move debug messages to pump_transfer() The speed can be changed from transfer to transfer, that's why the messages do not depict the actual values during ->setup(). Move debug messages from ->setup() to pump_transfers(). Get rid of leftovers as well. Signed-off-by: Andy Shevchenko Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- drivers/spi/spi-pxa2xx.c | 28 +++++++++++----------------- 1 file changed, 11 insertions(+), 17 deletions(-) diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index 158967a10bec..986a2911e94e 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -955,7 +955,18 @@ static void pump_transfers(unsigned long data) "pump_transfers: DMA burst size reduced to match bits_per_word\n"); } + /* NOTE: PXA25x_SSP _could_ use external clocking ... */ cr0 = pxa2xx_configure_sscr0(drv_data, clk_div, bits); + if (!pxa25x_ssp_comp(drv_data)) + dev_dbg(&message->spi->dev, "%u Hz actual, %s\n", + drv_data->master->max_speed_hz + / (1 + ((cr0 & SSCR0_SCR(0xfff)) >> 8)), + chip->enable_dma ? "DMA" : "PIO"); + else + dev_dbg(&message->spi->dev, "%u Hz actual, %s\n", + drv_data->master->max_speed_hz / 2 + / (1 + ((cr0 & SSCR0_SCR(0x0ff)) >> 8)), + chip->enable_dma ? "DMA" : "PIO"); message->state = RUNNING_STATE; @@ -1099,9 +1110,7 @@ static int setup(struct spi_device *spi) struct chip_data *chip; const struct lpss_config *config; struct driver_data *drv_data = spi_master_get_devdata(spi->master); - unsigned int clk_div; uint tx_thres, tx_hi_thres, rx_thres; - u32 cr0; switch (drv_data->ssp_type) { case QUARK_X1000_SSP: @@ -1192,8 +1201,6 @@ static int setup(struct spi_device *spi) } } - clk_div = pxa2xx_ssp_get_clk_div(drv_data, chip, spi->max_speed_hz); - switch (drv_data->ssp_type) { case QUARK_X1000_SSP: chip->threshold = (QUARK_X1000_SSCR1_RxTresh(rx_thres) @@ -1214,19 +1221,6 @@ static int setup(struct spi_device *spi) if (spi->mode & SPI_LOOP) chip->cr1 |= SSCR1_LBM; - /* NOTE: PXA25x_SSP _could_ use external clocking ... */ - cr0 = pxa2xx_configure_sscr0(drv_data, clk_div, spi->bits_per_word); - if (!pxa25x_ssp_comp(drv_data)) - dev_dbg(&spi->dev, "%u Hz actual, %s\n", - drv_data->master->max_speed_hz - / (1 + ((cr0 & SSCR0_SCR(0xfff)) >> 8)), - chip->enable_dma ? "DMA" : "PIO"); - else - dev_dbg(&spi->dev, "%u Hz actual, %s\n", - drv_data->master->max_speed_hz / 2 - / (1 + ((cr0 & SSCR0_SCR(0x0ff)) >> 8)), - chip->enable_dma ? "DMA" : "PIO"); - if (spi->bits_per_word <= 8) { chip->n_bytes = 1; chip->read = u8_reader; -- cgit v1.2.1 From d2c2f6a47633a36bc8db8c802f7c284da36a7a53 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Thu, 22 Oct 2015 16:44:40 +0300 Subject: spi: pxa2xx: derive struct chip_data from struct drv_data Since we call pxa2xx_ssp_get_clk_div() from pump_transfers() we may derive pointer to struct chip_data from struct drv_data like it's done in the rest of the functions. This will make it less errorprone. Signed-off-by: Andy Shevchenko Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- drivers/spi/spi-pxa2xx.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index 986a2911e94e..4fddc2a37a81 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -814,8 +814,9 @@ static unsigned int ssp_get_clk_div(struct driver_data *drv_data, int rate) } static unsigned int pxa2xx_ssp_get_clk_div(struct driver_data *drv_data, - struct chip_data *chip, int rate) + int rate) { + struct chip_data *chip = drv_data->cur_chip; unsigned int clk_div; switch (drv_data->ssp_type) { @@ -921,7 +922,7 @@ static void pump_transfers(unsigned long data) bits = transfer->bits_per_word; speed = transfer->speed_hz; - clk_div = pxa2xx_ssp_get_clk_div(drv_data, chip, speed); + clk_div = pxa2xx_ssp_get_clk_div(drv_data, speed); if (bits <= 8) { drv_data->n_bytes = 1; -- cgit v1.2.1 From 3b8b6d05942ef5dd952674e7420600f762166e22 Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Thu, 22 Oct 2015 16:44:41 +0300 Subject: spi: pxa2xx: Convert unique ID string of ACPI device as unsigned integer Andy noticed numeric unique device ID is unsigned integer so convert it using kstrtouint(). Actually integer in ACPI 2.0 and later is 64 bits litte-endian unsigned integer but quite certainly having so big value here would mean something extra than just the SPI bus number so it won't hurt to assume only lower 32 bits carry the bus number for now. Signed-off-by: Jarkko Nikula Cc: Mika Westerberg Cc: Andy Shevchenko Signed-off-by: Mark Brown --- drivers/spi/spi-pxa2xx.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index 4fddc2a37a81..db9016bbd904 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -1305,7 +1305,8 @@ pxa2xx_spi_acpi_get_pdata(struct platform_device *pdev) struct resource *res; const struct acpi_device_id *adev_id = NULL; const struct pci_device_id *pcidev_id = NULL; - int devid, type; + unsigned int devid; + int type; adev = ACPI_COMPANION(&pdev->dev); if (!adev) @@ -1352,7 +1353,7 @@ pxa2xx_spi_acpi_get_pdata(struct platform_device *pdev) ssp->pdev = pdev; ssp->port_id = -1; - if (adev->pnp.unique_id && !kstrtoint(adev->pnp.unique_id, 0, &devid)) + if (adev->pnp.unique_id && !kstrtouint(adev->pnp.unique_id, 0, &devid)) ssp->port_id = devid; pdata->num_chipselect = 1; -- cgit v1.2.1 From 0e8972187971ac6c29a9e5899fa6c555c739237c Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Thu, 22 Oct 2015 16:44:42 +0300 Subject: spi: pxa2xx: Save other reg_cs_ctrl bits when configuring chip select Upcoming Intel platforms use LPSS SPI_CS_CONTROL register bits 15:12 for configuring the chip select polarities. Touch only chip select SW mode and state bits when enabling the software chip select control in order to not clear any other bits in the register. Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- drivers/spi/spi-pxa2xx.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index db9016bbd904..4dc5660d4e33 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -249,7 +249,9 @@ static void lpss_ssp_setup(struct driver_data *drv_data) drv_data->lpss_base = drv_data->ioaddr + config->offset; /* Enable software chip select control */ - value = SPI_CS_CONTROL_SW_MODE | SPI_CS_CONTROL_CS_HIGH; + value = __lpss_ssp_read_priv(drv_data, config->reg_cs_ctrl); + value &= ~(SPI_CS_CONTROL_SW_MODE | SPI_CS_CONTROL_CS_HIGH); + value |= SPI_CS_CONTROL_SW_MODE | SPI_CS_CONTROL_CS_HIGH; __lpss_ssp_write_priv(drv_data, config->reg_cs_ctrl, value); /* Enable multiblock DMA transfers */ -- cgit v1.2.1 From ceb941afa5c38dae8e273089266c412d362c7963 Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Thu, 22 Oct 2015 16:44:43 +0300 Subject: spi: pxa2xx: Align a few defines Add more indentation to define lines for making them aligned with the longest one. They would look messy after adding more long defines. Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- drivers/spi/spi-pxa2xx.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index 4dc5660d4e33..0f6a6c89eab3 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -61,9 +61,9 @@ MODULE_ALIAS("platform:pxa2xx-spi"); | QUARK_X1000_SSCR1_TFT \ | SSCR1_SPH | SSCR1_SPO | SSCR1_LBM) -#define GENERAL_REG_RXTO_HOLDOFF_DISABLE BIT(24) -#define SPI_CS_CONTROL_SW_MODE BIT(0) -#define SPI_CS_CONTROL_CS_HIGH BIT(1) +#define GENERAL_REG_RXTO_HOLDOFF_DISABLE BIT(24) +#define SPI_CS_CONTROL_SW_MODE BIT(0) +#define SPI_CS_CONTROL_CS_HIGH BIT(1) struct lpss_config { /* LPSS offset from drv_data->ioaddr */ -- cgit v1.2.1 From a1fdeaa71c95e5c6eba40245f84f762202dc69bb Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Thu, 22 Oct 2015 18:59:22 +0200 Subject: spi: fix kernel-doc warnings about missing return desc in spi.h When building docs with make htmldocs, warnings about not having a description for the return value are reported, i.e: warning: No description found for return value of 'spi_write' Fix these by following the kernel-doc conventions explained in Documentation/kernel-doc-nano-HOWTO.txt. Signed-off-by: Javier Martinez Canillas Signed-off-by: Mark Brown --- include/linux/spi/spi.h | 34 ++++++++++++++++++++-------------- 1 file changed, 20 insertions(+), 14 deletions(-) diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index e1f21778cb54..635bff60eda5 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -847,8 +847,10 @@ extern int spi_bus_unlock(struct spi_master *master); * @len: data buffer size * Context: can sleep * - * This writes the buffer and returns zero or a negative error code. + * This function writes the buffer @buf. * Callable only from contexts that can sleep. + * + * Return: zero on success, else a negative error code. */ static inline int spi_write(struct spi_device *spi, const void *buf, size_t len) @@ -871,8 +873,10 @@ spi_write(struct spi_device *spi, const void *buf, size_t len) * @len: data buffer size * Context: can sleep * - * This reads the buffer and returns zero or a negative error code. + * This function reads the buffer @buf. * Callable only from contexts that can sleep. + * + * Return: zero on success, else a negative error code. */ static inline int spi_read(struct spi_device *spi, void *buf, size_t len) @@ -899,7 +903,7 @@ spi_read(struct spi_device *spi, void *buf, size_t len) * * For more specific semantics see spi_sync(). * - * It returns zero on success, else a negative error code. + * Return: Return: zero on success, else a negative error code. */ static inline int spi_sync_transfer(struct spi_device *spi, struct spi_transfer *xfers, @@ -923,9 +927,10 @@ extern int spi_write_then_read(struct spi_device *spi, * @cmd: command to be written before data is read back * Context: can sleep * - * This returns the (unsigned) eight bit number returned by the - * device, or else a negative error code. Callable only from - * contexts that can sleep. + * Callable only from contexts that can sleep. + * + * Return: the (unsigned) eight bit number returned by the + * device, or else a negative error code. */ static inline ssize_t spi_w8r8(struct spi_device *spi, u8 cmd) { @@ -944,12 +949,13 @@ static inline ssize_t spi_w8r8(struct spi_device *spi, u8 cmd) * @cmd: command to be written before data is read back * Context: can sleep * - * This returns the (unsigned) sixteen bit number returned by the - * device, or else a negative error code. Callable only from - * contexts that can sleep. - * * The number is returned in wire-order, which is at least sometimes * big-endian. + * + * Callable only from contexts that can sleep. + * + * Return: the (unsigned) sixteen bit number returned by the + * device, or else a negative error code. */ static inline ssize_t spi_w8r16(struct spi_device *spi, u8 cmd) { @@ -968,13 +974,13 @@ static inline ssize_t spi_w8r16(struct spi_device *spi, u8 cmd) * @cmd: command to be written before data is read back * Context: can sleep * - * This returns the (unsigned) sixteen bit number returned by the device in cpu - * endianness, or else a negative error code. Callable only from contexts that - * can sleep. - * * This function is similar to spi_w8r16, with the exception that it will * convert the read 16 bit data word from big-endian to native endianness. * + * Callable only from contexts that can sleep. + * + * Return: the (unsigned) sixteen bit number returned by the device in cpu + * endianness, or else a negative error code. */ static inline ssize_t spi_w8r16be(struct spi_device *spi, u8 cmd) -- cgit v1.2.1 From 97d56dc6826896852dae1a2bdab7a42ecde32c6f Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Thu, 22 Oct 2015 18:59:23 +0200 Subject: spi: fix kernel-doc warnings about missing return desc in spi.c When building docs with make htmldocs, warnings about not having a description for the return value are reported, i.e: warning: No description found for return value of 'spi_register_driver' Fix these by following the kernel-doc conventions explained in Documentation/kernel-doc-nano-HOWTO.txt. Signed-off-by: Javier Martinez Canillas Signed-off-by: Mark Brown --- drivers/spi/spi.c | 41 ++++++++++++++++++++++++++++++++--------- 1 file changed, 32 insertions(+), 9 deletions(-) diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 11454d5aef95..74825db6fdd0 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -378,6 +378,8 @@ static void spi_drv_shutdown(struct device *dev) * spi_register_driver - register a SPI driver * @sdrv: the driver to register * Context: can sleep + * + * Return: zero on success, else a negative error code. */ int spi_register_driver(struct spi_driver *sdrv) { @@ -429,7 +431,7 @@ static DEFINE_MUTEX(board_lock); * needs to discard the spi_device without adding it, then it should * call spi_dev_put() on it. * - * Returns a pointer to the new device, or NULL. + * Return: a pointer to the new device, or NULL. */ struct spi_device *spi_alloc_device(struct spi_master *master) { @@ -488,7 +490,7 @@ static int spi_dev_check(struct device *dev, void *data) * Companion function to spi_alloc_device. Devices allocated with * spi_alloc_device can be added onto the spi bus with this function. * - * Returns 0 on success; negative errno on failure + * Return: 0 on success; negative errno on failure */ int spi_add_device(struct spi_device *spi) { @@ -561,7 +563,7 @@ EXPORT_SYMBOL_GPL(spi_add_device); * this is exported so that for example a USB or parport based adapter * driver could add devices (which it would learn about out-of-band). * - * Returns the new device, or NULL. + * Return: the new device, or NULL. */ struct spi_device *spi_new_device(struct spi_master *master, struct spi_board_info *chip) @@ -633,6 +635,8 @@ static void spi_match_master_to_boardinfo(struct spi_master *master, * * The board info passed can safely be __initdata ... but be careful of * any embedded pointers (platform_data, etc), they're copied as-is. + * + * Return: zero on success, else a negative error code. */ int spi_register_board_info(struct spi_board_info const *info, unsigned n) { @@ -1210,6 +1214,8 @@ static int spi_init_queue(struct spi_master *master) * * If there are more messages in the queue, the next message is returned from * this call. + * + * Return: the next message in the queue, else NULL if the queue is empty. */ struct spi_message *spi_get_next_queued_message(struct spi_master *master) { @@ -1373,6 +1379,8 @@ static int __spi_queued_transfer(struct spi_device *spi, * spi_queued_transfer - transfer function for queued transfers * @spi: spi device which is requesting transfer * @msg: spi message which is to handled is queued to driver queue + * + * Return: zero on success, else a negative error code. */ static int spi_queued_transfer(struct spi_device *spi, struct spi_message *msg) { @@ -1672,12 +1680,13 @@ static struct class spi_master_class = { * only ones directly touching chip registers. It's how they allocate * an spi_master structure, prior to calling spi_register_master(). * - * This must be called from context that can sleep. It returns the SPI - * master structure on success, else NULL. + * This must be called from context that can sleep. * * The caller is responsible for assigning the bus number and initializing * the master's methods before calling spi_register_master(); and (after errors * adding the device) calling spi_master_put() to prevent a memory leak. + * + * Return: the SPI master structure on success, else NULL. */ struct spi_master *spi_alloc_master(struct device *dev, unsigned size) { @@ -1761,6 +1770,8 @@ static int of_spi_register_master(struct spi_master *master) * success, else a negative error code (dropping the master's refcount). * After a successful return, the caller is responsible for calling * spi_unregister_master(). + * + * Return: zero on success, else a negative error code. */ int spi_register_master(struct spi_master *master) { @@ -1854,6 +1865,8 @@ static void devm_spi_unregister(struct device *dev, void *res) * * Register a SPI device as with spi_register_master() which will * automatically be unregister + * + * Return: zero on success, else a negative error code. */ int devm_spi_register_master(struct device *dev, struct spi_master *master) { @@ -1959,6 +1972,8 @@ static int __spi_master_match(struct device *dev, const void *data) * arch init time. It returns a refcounted pointer to the relevant * spi_master (which the caller must release), or NULL if there is * no such master registered. + * + * Return: the SPI master structure on success, else NULL. */ struct spi_master *spi_busnum_to_master(u16 bus_num) { @@ -2012,6 +2027,8 @@ static int __spi_validate_bits_per_word(struct spi_master *master, u8 bits_per_w * that the underlying controller or its driver does not support. For * example, not all hardware supports wire transfers using nine bit words, * LSB-first wire encoding, or active-high chipselects. + * + * Return: zero on success, else a negative error code. */ int spi_setup(struct spi_device *spi) { @@ -2230,6 +2247,8 @@ static int __spi_async(struct spi_device *spi, struct spi_message *message) * no other spi_message queued to that device will be processed. * (This rule applies equally to all the synchronous transfer calls, * which are wrappers around this core asynchronous primitive.) + * + * Return: zero on success, else a negative error code. */ int spi_async(struct spi_device *spi, struct spi_message *message) { @@ -2282,6 +2301,8 @@ EXPORT_SYMBOL_GPL(spi_async); * no other spi_message queued to that device will be processed. * (This rule applies equally to all the synchronous transfer calls, * which are wrappers around this core asynchronous primitive.) + * + * Return: zero on success, else a negative error code. */ int spi_async_locked(struct spi_device *spi, struct spi_message *message) { @@ -2397,7 +2418,7 @@ static int __spi_sync(struct spi_device *spi, struct spi_message *message, * Also, the caller is guaranteeing that the memory associated with the * message will not be freed before this call returns. * - * It returns zero on success, else a negative error code. + * Return: zero on success, else a negative error code. */ int spi_sync(struct spi_device *spi, struct spi_message *message) { @@ -2419,7 +2440,7 @@ EXPORT_SYMBOL_GPL(spi_sync); * SPI bus. It has to be preceded by a spi_bus_lock call. The SPI bus must * be released by a spi_bus_unlock call when the exclusive access is over. * - * It returns zero on success, else a negative error code. + * Return: zero on success, else a negative error code. */ int spi_sync_locked(struct spi_device *spi, struct spi_message *message) { @@ -2440,7 +2461,7 @@ EXPORT_SYMBOL_GPL(spi_sync_locked); * exclusive access is over. Data transfer must be done by spi_sync_locked * and spi_async_locked calls when the SPI bus lock is held. * - * It returns zero on success, else a negative error code. + * Return: always zero. */ int spi_bus_lock(struct spi_master *master) { @@ -2469,7 +2490,7 @@ EXPORT_SYMBOL_GPL(spi_bus_lock); * This call releases an SPI bus lock previously obtained by an spi_bus_lock * call. * - * It returns zero on success, else a negative error code. + * Return: always zero. */ int spi_bus_unlock(struct spi_master *master) { @@ -2504,6 +2525,8 @@ static u8 *buf; * portable code should never use this for more than 32 bytes. * Performance-sensitive or bulk transfer code should instead use * spi_{async,sync}() calls with dma-safe buffers. + * + * Return: zero on success, else a negative error code. */ int spi_write_then_read(struct spi_device *spi, const void *txbuf, unsigned n_tx, -- cgit v1.2.1 From eca3a1ee8dd7ec5819bd77d598044eb6ecdf4495 Mon Sep 17 00:00:00 2001 From: Leilk Liu Date: Mon, 26 Oct 2015 16:09:41 +0800 Subject: spi: mediatek: Update document devicetree bindings to support multiple devices This patch updates document devicetree bindings to support multiple devices. Signed-off-by: Leilk Liu Signed-off-by: Mark Brown --- Documentation/devicetree/bindings/spi/spi-mt65xx.txt | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/spi/spi-mt65xx.txt b/Documentation/devicetree/bindings/spi/spi-mt65xx.txt index 6160ffbcb3d3..ce363c923f44 100644 --- a/Documentation/devicetree/bindings/spi/spi-mt65xx.txt +++ b/Documentation/devicetree/bindings/spi/spi-mt65xx.txt @@ -29,8 +29,11 @@ Required properties: muxes clock, and "spi-clk" for the clock gate. Optional properties: +-cs-gpios: see spi-bus.txt, only required for MT8173. + - mediatek,pad-select: specify which pins group(ck/mi/mo/cs) spi - controller used, this value should be 0~3, only required for MT8173. + controller used. This is a array, the element value should be 0~3, + only required for MT8173. 0: specify GPIO69,70,71,72 for spi pins. 1: specify GPIO102,103,104,105 for spi pins. 2: specify GPIO128,129,130,131 for spi pins. @@ -49,7 +52,7 @@ spi: spi@1100a000 { <&topckgen CLK_TOP_SPI_SEL>, <&pericfg CLK_PERI_SPI0>; clock-names = "parent-clk", "sel-clk", "spi-clk"; - - mediatek,pad-select = <0>; + cs-gpios = <&pio 105 GPIO_ACTIVE_LOW>, <&pio 72 GPIO_ACTIVE_LOW>; + mediatek,pad-select = <1>, <0>; status = "disabled"; }; -- cgit v1.2.1 From 79b5d3f24dcec547ea5db7d2e0b557a36f92b16b Mon Sep 17 00:00:00 2001 From: Leilk Liu Date: Mon, 26 Oct 2015 16:09:41 +0800 Subject: spi: mediatek: remove mtk_spi_config mtk_spi_config() and mtk_spi_prepare_message() both initialize spi register, so remove mtk_spi_config() and init all register in mtk_spi_prepare_message(). Signed-off-by: Leilk Liu Signed-off-by: Mark Brown --- drivers/spi/spi-mt65xx.c | 59 +++++++++++++++++++++--------------------------- 1 file changed, 26 insertions(+), 33 deletions(-) diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c index ecb6c58238c4..7bd84c8061c6 100644 --- a/drivers/spi/spi-mt65xx.c +++ b/drivers/spi/spi-mt65xx.c @@ -131,10 +131,34 @@ static void mtk_spi_reset(struct mtk_spi *mdata) writel(reg_val, mdata->base + SPI_CMD_REG); } -static void mtk_spi_config(struct mtk_spi *mdata, - struct mtk_chip_config *chip_config) +static int mtk_spi_prepare_message(struct spi_master *master, + struct spi_message *msg) { + u16 cpha, cpol; u32 reg_val; + struct mtk_chip_config *chip_config; + struct spi_device *spi = msg->spi; + struct mtk_spi *mdata = spi_master_get_devdata(master); + + cpha = spi->mode & SPI_CPHA ? 1 : 0; + cpol = spi->mode & SPI_CPOL ? 1 : 0; + + chip_config = spi->controller_data; + if (!chip_config) { + chip_config = (void *)&mtk_default_chip_info; + spi->controller_data = chip_config; + } + + reg_val = readl(mdata->base + SPI_CMD_REG); + if (cpha) + reg_val |= SPI_CMD_CPHA; + else + reg_val &= ~SPI_CMD_CPHA; + if (cpol) + reg_val |= SPI_CMD_CPOL; + else + reg_val &= ~SPI_CMD_CPOL; + writel(reg_val, mdata->base + SPI_CMD_REG); reg_val = readl(mdata->base + SPI_CMD_REG); @@ -171,37 +195,6 @@ static void mtk_spi_config(struct mtk_spi *mdata, /* pad select */ if (mdata->dev_comp->need_pad_sel) writel(mdata->pad_sel, mdata->base + SPI_PAD_SEL_REG); -} - -static int mtk_spi_prepare_message(struct spi_master *master, - struct spi_message *msg) -{ - u32 reg_val; - u8 cpha, cpol; - struct mtk_chip_config *chip_config; - struct spi_device *spi = msg->spi; - struct mtk_spi *mdata = spi_master_get_devdata(master); - - cpha = spi->mode & SPI_CPHA ? 1 : 0; - cpol = spi->mode & SPI_CPOL ? 1 : 0; - - reg_val = readl(mdata->base + SPI_CMD_REG); - if (cpha) - reg_val |= SPI_CMD_CPHA; - else - reg_val &= ~SPI_CMD_CPHA; - if (cpol) - reg_val |= SPI_CMD_CPOL; - else - reg_val &= ~SPI_CMD_CPOL; - writel(reg_val, mdata->base + SPI_CMD_REG); - - chip_config = spi->controller_data; - if (!chip_config) { - chip_config = (void *)&mtk_default_chip_info; - spi->controller_data = chip_config; - } - mtk_spi_config(mdata, chip_config); return 0; } -- cgit v1.2.1 From 58a984c79a68d508ccfccf4b82c0eaf7f487c399 Mon Sep 17 00:00:00 2001 From: Leilk Liu Date: Mon, 26 Oct 2015 16:09:43 +0800 Subject: spi: mediatek: handle controller_data in mtk_spi_setup controller_data is related with device, so move to master->setup function. Signed-off-by: Leilk Liu Signed-off-by: Mark Brown --- drivers/spi/spi-mt65xx.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c index 7bd84c8061c6..406695a42e19 100644 --- a/drivers/spi/spi-mt65xx.c +++ b/drivers/spi/spi-mt65xx.c @@ -136,19 +136,13 @@ static int mtk_spi_prepare_message(struct spi_master *master, { u16 cpha, cpol; u32 reg_val; - struct mtk_chip_config *chip_config; struct spi_device *spi = msg->spi; + struct mtk_chip_config *chip_config = spi->controller_data; struct mtk_spi *mdata = spi_master_get_devdata(master); cpha = spi->mode & SPI_CPHA ? 1 : 0; cpol = spi->mode & SPI_CPOL ? 1 : 0; - chip_config = spi->controller_data; - if (!chip_config) { - chip_config = (void *)&mtk_default_chip_info; - spi->controller_data = chip_config; - } - reg_val = readl(mdata->base + SPI_CMD_REG); if (cpha) reg_val |= SPI_CMD_CPHA; @@ -406,6 +400,16 @@ static bool mtk_spi_can_dma(struct spi_master *master, return xfer->len > MTK_SPI_MAX_FIFO_SIZE; } +static int mtk_spi_setup(struct spi_device *spi) +{ + struct mtk_spi *mdata = spi_master_get_devdata(spi->master); + + if (!spi->controller_data) + spi->controller_data = (void *)&mtk_default_chip_info; + + return 0; +} + static irqreturn_t mtk_spi_interrupt(int irq, void *dev_id) { u32 cmd, reg_val, cnt; @@ -493,6 +497,7 @@ static int mtk_spi_probe(struct platform_device *pdev) master->prepare_message = mtk_spi_prepare_message; master->transfer_one = mtk_spi_transfer_one; master->can_dma = mtk_spi_can_dma; + master->setup = mtk_spi_setup; of_id = of_match_node(mtk_spi_of_match, pdev->dev.of_node); if (!of_id) { -- cgit v1.2.1 From 37457607ecaffe56718a0e423548edeb3d4a11b7 Mon Sep 17 00:00:00 2001 From: Leilk Liu Date: Mon, 26 Oct 2015 16:09:44 +0800 Subject: spi: mediatek: mt8173 spi multiple devices support mt8173 IC spi HW has 4 gpio group, it's possible to support max <= 4 slave devices, even mtk spi HW is not congruent to spi core. 1. When a device do a spi_message transfer, spi HW should know which pad-group this device is on, and then writes pad-select register. 2. Mtk pad-select register just selects which MISO pin HW will receive data. For example, pad-select=1(select spi1 pins), HW just receives data from spi1 MISO, but it still send waveform to all 4 group cs/clk/mosi. If cs pin in other groups is still spi mode, after spi1 is selected(by active cs pin), devices on other group will also be selected. Signed-off-by: Leilk Liu Signed-off-by: Mark Brown --- drivers/spi/spi-mt65xx.c | 65 ++++++++++++++++++++++++++++++++++++++---------- 1 file changed, 52 insertions(+), 13 deletions(-) diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c index 406695a42e19..563954a61424 100644 --- a/drivers/spi/spi-mt65xx.c +++ b/drivers/spi/spi-mt65xx.c @@ -20,6 +20,7 @@ #include #include #include +#include #include #include #include @@ -84,7 +85,8 @@ struct mtk_spi_compatible { struct mtk_spi { void __iomem *base; u32 state; - u32 pad_sel; + int pad_num; + u32 *pad_sel; struct clk *parent_clk, *sel_clk, *spi_clk; struct spi_transfer *cur_transfer; u32 xfer_len; @@ -188,7 +190,8 @@ static int mtk_spi_prepare_message(struct spi_master *master, /* pad select */ if (mdata->dev_comp->need_pad_sel) - writel(mdata->pad_sel, mdata->base + SPI_PAD_SEL_REG); + writel(mdata->pad_sel[spi->chip_select], + mdata->base + SPI_PAD_SEL_REG); return 0; } @@ -407,6 +410,9 @@ static int mtk_spi_setup(struct spi_device *spi) if (!spi->controller_data) spi->controller_data = (void *)&mtk_default_chip_info; + if (mdata->dev_comp->need_pad_sel) + gpio_direction_output(spi->cs_gpio, !(spi->mode & SPI_CS_HIGH)); + return 0; } @@ -481,7 +487,7 @@ static int mtk_spi_probe(struct platform_device *pdev) struct mtk_spi *mdata; const struct of_device_id *of_id; struct resource *res; - int irq, ret; + int i, irq, ret; master = spi_alloc_master(&pdev->dev, sizeof(*mdata)); if (!master) { @@ -512,21 +518,34 @@ static int mtk_spi_probe(struct platform_device *pdev) master->flags = SPI_MASTER_MUST_TX; if (mdata->dev_comp->need_pad_sel) { - ret = of_property_read_u32(pdev->dev.of_node, - "mediatek,pad-select", - &mdata->pad_sel); - if (ret) { - dev_err(&pdev->dev, "failed to read pad select: %d\n", - ret); + mdata->pad_num = of_property_count_u32_elems( + pdev->dev.of_node, + "mediatek,pad-select"); + if (mdata->pad_num < 0) { + dev_err(&pdev->dev, + "No 'mediatek,pad-select' property\n"); + ret = -EINVAL; goto err_put_master; } - if (mdata->pad_sel > MT8173_SPI_MAX_PAD_SEL) { - dev_err(&pdev->dev, "wrong pad-select: %u\n", - mdata->pad_sel); - ret = -EINVAL; + mdata->pad_sel = devm_kmalloc_array(&pdev->dev, mdata->pad_num, + sizeof(u32), GFP_KERNEL); + if (!mdata->pad_sel) { + ret = -ENOMEM; goto err_put_master; } + + for (i = 0; i < mdata->pad_num; i++) { + of_property_read_u32_index(pdev->dev.of_node, + "mediatek,pad-select", + i, &mdata->pad_sel[i]); + if (mdata->pad_sel[i] > MT8173_SPI_MAX_PAD_SEL) { + dev_err(&pdev->dev, "wrong pad-sel[%d]: %u\n", + i, mdata->pad_sel[i]); + ret = -EINVAL; + goto err_put_master; + } + } } platform_set_drvdata(pdev, master); @@ -604,6 +623,26 @@ static int mtk_spi_probe(struct platform_device *pdev) goto err_put_master; } + if (mdata->dev_comp->need_pad_sel) { + if (mdata->pad_num != master->num_chipselect) { + dev_err(&pdev->dev, + "pad_num does not match num_chipselect(%d != %d)\n", + mdata->pad_num, master->num_chipselect); + ret = -EINVAL; + goto err_put_master; + } + + for (i = 0; i < master->num_chipselect; i++) { + ret = devm_gpio_request(&pdev->dev, master->cs_gpios[i], + dev_name(&pdev->dev)); + if (ret) { + dev_err(&pdev->dev, + "can't get CS GPIO %i\n", i); + goto err_put_master; + } + } + } + return 0; err_disable_clk: -- cgit v1.2.1 From d7ef54ca1219ddf99d56a0f7cf40912ab4c4bb0b Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Tue, 27 Oct 2015 17:48:16 +0200 Subject: spi: dw: replace magic constant by DW_SPI_DR The offset 0x60 is the offset of the data register defined as DW_SPI_DR in the header file. Use it. Signed-off-by: Andy Shevchenko Signed-off-by: Mark Brown --- drivers/spi/spi-dw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c index cc2e98037afd..882cd6618cd5 100644 --- a/drivers/spi/spi-dw.c +++ b/drivers/spi/spi-dw.c @@ -483,7 +483,7 @@ int dw_spi_add_host(struct device *dev, struct dw_spi *dws) dws->master = master; dws->type = SSI_MOTO_SPI; dws->dma_inited = 0; - dws->dma_addr = (dma_addr_t)(dws->paddr + 0x60); + dws->dma_addr = (dma_addr_t)(dws->paddr + DW_SPI_DR); snprintf(dws->name, sizeof(dws->name), "dw_spi%d", dws->bus_num); ret = request_irq(dws->irq, dw_spi_irq, IRQF_SHARED, dws->name, master); -- cgit v1.2.1 From abeedb0159eec42c52a28fc44457164f71aa12a9 Mon Sep 17 00:00:00 2001 From: Franklin S Cooper Jr Date: Fri, 16 Oct 2015 10:29:03 -0500 Subject: spi: Setup the master controller driver before setting the chipselect SPI controllers may need to be properly setup before chip selects can be used. Therefore, wait until the spi controller has a chance to perform their setup procedure before trying to use the chip select. This also insures that the chip selects pins are in a good state before asseting them which otherwise may cause confusion. Signed-off-by: Franklin S Cooper Jr Tested-by: Grygorii Strashko Tested-by: Ivan Khoronzhuk Signed-off-by: Mark Brown --- drivers/spi/spi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 3abb3903f2ad..7b528b0aedb9 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -1993,11 +1993,11 @@ int spi_setup(struct spi_device *spi) if (!spi->max_speed_hz) spi->max_speed_hz = spi->master->max_speed_hz; - spi_set_cs(spi, false); - if (spi->master->setup) status = spi->master->setup(spi); + spi_set_cs(spi, false); + dev_dbg(&spi->dev, "setup mode %d, %s%s%s%s%u bits/w, %u Hz max --> %d\n", (int) (spi->mode & (SPI_CPOL | SPI_CPHA)), (spi->mode & SPI_CS_HIGH) ? "cs_high, " : "", -- cgit v1.2.1 From ca5d24854210dd02548a080d4271560e926c4fcb Mon Sep 17 00:00:00 2001 From: "Andrew F. Davis" Date: Fri, 23 Oct 2015 08:59:10 -0500 Subject: spi: Add THIS_MODULE to spi_driver in SPI core Add spi_register_driver helper macro that adds THIS_MODULE to spi_driver for the registering driver. We rename and modify the existing spi_register_driver to enable this. Signed-off-by: Andrew F. Davis Signed-off-by: Mark Brown --- drivers/spi/spi.c | 7 ++++--- include/linux/spi/spi.h | 6 +++++- 2 files changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 3abb3903f2ad..51e33dbe4e05 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -305,12 +305,13 @@ static void spi_drv_shutdown(struct device *dev) } /** - * spi_register_driver - register a SPI driver + * __spi_register_driver - register a SPI driver * @sdrv: the driver to register * Context: can sleep */ -int spi_register_driver(struct spi_driver *sdrv) +int __spi_register_driver(struct module *owner, struct spi_driver *sdrv) { + sdrv->driver.owner = owner; sdrv->driver.bus = &spi_bus_type; if (sdrv->probe) sdrv->driver.probe = spi_drv_probe; @@ -320,7 +321,7 @@ int spi_register_driver(struct spi_driver *sdrv) sdrv->driver.shutdown = spi_drv_shutdown; return driver_register(&sdrv->driver); } -EXPORT_SYMBOL_GPL(spi_register_driver); +EXPORT_SYMBOL_GPL(__spi_register_driver); /*-------------------------------------------------------------------------*/ diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index 269e8afd3e2a..e2da17b5900e 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -250,7 +250,7 @@ static inline struct spi_driver *to_spi_driver(struct device_driver *drv) return drv ? container_of(drv, struct spi_driver, driver) : NULL; } -extern int spi_register_driver(struct spi_driver *sdrv); +extern int __spi_register_driver(struct module *owner, struct spi_driver *sdrv); /** * spi_unregister_driver - reverse effect of spi_register_driver @@ -263,6 +263,10 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv) driver_unregister(&sdrv->driver); } +/* use a define to avoid include chaining to get THIS_MODULE */ +#define spi_register_driver(driver) \ + __spi_register_driver(THIS_MODULE, driver) + /** * module_spi_driver() - Helper macro for registering a SPI driver * @__spi_driver: spi_driver struct -- cgit v1.2.1 From 3821a065f5672c430a088ae68b4da2a2d2b34106 Mon Sep 17 00:00:00 2001 From: "Andrew F. Davis" Date: Fri, 23 Oct 2015 08:59:11 -0500 Subject: spi: Drop owner assignment from spi_drivers An spi_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Andrew F. Davis Acked-by: Jonathan Cameron Signed-off-by: Mark Brown --- arch/arm/mach-u300/dummyspichip.c | 1 - arch/mips/txx9/generic/spi_eeprom.c | 1 - drivers/char/tpm/st33zp24/spi.c | 1 - drivers/gpio/gpio-74x164.c | 1 - drivers/gpio/gpio-max7301.c | 1 - drivers/gpio/gpio-mc33880.c | 1 - drivers/gpio/gpio-mcp23s08.c | 2 -- drivers/gpu/drm/panel/panel-lg-lg4573.c | 1 - drivers/gpu/drm/panel/panel-samsung-ld9040.c | 1 - drivers/hwmon/ad7314.c | 1 - drivers/hwmon/adcxx.c | 1 - drivers/hwmon/ads7871.c | 1 - drivers/hwmon/adt7310.c | 1 - drivers/hwmon/lm70.c | 1 - drivers/hwmon/max1111.c | 1 - drivers/iio/accel/kxsd9.c | 1 - drivers/iio/accel/st_accel_spi.c | 1 - drivers/iio/adc/ad7266.c | 1 - drivers/iio/adc/ad7298.c | 1 - drivers/iio/adc/ad7476.c | 1 - drivers/iio/adc/ad7791.c | 1 - drivers/iio/adc/ad7793.c | 1 - drivers/iio/adc/ad7887.c | 1 - drivers/iio/adc/ad7923.c | 1 - drivers/iio/adc/max1027.c | 1 - drivers/iio/adc/mcp320x.c | 1 - drivers/iio/adc/ti-adc128s052.c | 1 - drivers/iio/amplifiers/ad8366.c | 1 - drivers/iio/common/ssp_sensors/ssp_dev.c | 1 - drivers/iio/dac/ad5064.c | 1 - drivers/iio/dac/ad5360.c | 1 - drivers/iio/dac/ad5380.c | 1 - drivers/iio/dac/ad5421.c | 1 - drivers/iio/dac/ad5446.c | 1 - drivers/iio/dac/ad5449.c | 1 - drivers/iio/dac/ad5504.c | 1 - drivers/iio/dac/ad5624r_spi.c | 1 - drivers/iio/dac/ad5686.c | 1 - drivers/iio/dac/ad5755.c | 1 - drivers/iio/dac/ad5764.c | 1 - drivers/iio/dac/ad5791.c | 1 - drivers/iio/dac/ad7303.c | 1 - drivers/iio/dac/mcp4922.c | 1 - drivers/iio/frequency/ad9523.c | 1 - drivers/iio/frequency/adf4350.c | 1 - drivers/iio/gyro/adis16080.c | 1 - drivers/iio/gyro/adis16130.c | 1 - drivers/iio/gyro/adis16136.c | 1 - drivers/iio/gyro/adis16260.c | 1 - drivers/iio/gyro/adxrs450.c | 1 - drivers/iio/gyro/st_gyro_spi.c | 1 - drivers/iio/imu/adis16400_core.c | 1 - drivers/iio/imu/adis16480.c | 1 - drivers/iio/magnetometer/st_magn_spi.c | 1 - drivers/iio/pressure/ms5611_spi.c | 1 - drivers/iio/pressure/st_pressure_spi.c | 1 - drivers/iio/proximity/as3935.c | 1 - drivers/input/misc/ad714x-spi.c | 1 - drivers/input/misc/adxl34x-spi.c | 1 - drivers/input/touchscreen/ad7877.c | 1 - drivers/input/touchscreen/ad7879-spi.c | 1 - drivers/input/touchscreen/ads7846.c | 1 - drivers/input/touchscreen/cyttsp4_spi.c | 1 - drivers/input/touchscreen/cyttsp_spi.c | 1 - drivers/input/touchscreen/tsc2005.c | 1 - drivers/leds/leds-dac124s085.c | 1 - drivers/media/i2c/s5c73m3/s5c73m3-spi.c | 1 - drivers/media/tuners/msi001.c | 1 - drivers/mfd/arizona-spi.c | 1 - drivers/mfd/cros_ec_spi.c | 1 - drivers/mfd/da9052-spi.c | 1 - drivers/mfd/ezx-pcap.c | 1 - drivers/mfd/mc13xxx-spi.c | 1 - drivers/mfd/stmpe-spi.c | 1 - drivers/mfd/tps65912-spi.c | 1 - drivers/mfd/wm831x-spi.c | 1 - drivers/misc/ad525x_dpot-spi.c | 1 - drivers/misc/bmp085-spi.c | 1 - drivers/misc/eeprom/at25.c | 1 - drivers/misc/eeprom/eeprom_93xx46.c | 1 - drivers/misc/lattice-ecp3-config.c | 1 - drivers/misc/lis3lv02d/lis3lv02d_spi.c | 1 - drivers/misc/ti_dac7512.c | 1 - drivers/mmc/host/mmc_spi.c | 1 - drivers/mtd/devices/m25p80.c | 1 - drivers/mtd/devices/mtd_dataflash.c | 1 - drivers/mtd/devices/sst25l.c | 1 - drivers/net/can/spi/mcp251x.c | 1 - drivers/net/ethernet/micrel/ks8851.c | 1 - drivers/net/ethernet/microchip/enc28j60.c | 1 - drivers/net/ethernet/qualcomm/qca_spi.c | 1 - drivers/net/ieee802154/at86rf230.c | 1 - drivers/net/ieee802154/cc2520.c | 1 - drivers/net/ieee802154/mrf24j40.c | 1 - drivers/net/phy/spi_ks8995.c | 1 - drivers/net/wireless/cw1200/cw1200_spi.c | 1 - drivers/net/wireless/libertas/if_spi.c | 1 - drivers/net/wireless/p54/p54spi.c | 1 - drivers/net/wireless/ti/wl1251/spi.c | 1 - drivers/net/wireless/ti/wlcore/spi.c | 1 - drivers/nfc/st-nci/spi.c | 1 - drivers/nfc/trf7970a.c | 1 - drivers/regulator/tps6524x-regulator.c | 1 - drivers/rtc/rtc-ds1305.c | 1 - drivers/rtc/rtc-ds1343.c | 1 - drivers/rtc/rtc-ds1347.c | 1 - drivers/rtc/rtc-ds1390.c | 1 - drivers/rtc/rtc-ds3234.c | 1 - drivers/rtc/rtc-m41t93.c | 1 - drivers/rtc/rtc-m41t94.c | 1 - drivers/rtc/rtc-max6902.c | 1 - drivers/rtc/rtc-mcp795.c | 1 - drivers/rtc/rtc-pcf2123.c | 1 - drivers/rtc/rtc-r9701.c | 1 - drivers/rtc/rtc-rs5c348.c | 1 - drivers/rtc/rtc-rx4581.c | 1 - drivers/spi/spi-tle62x0.c | 1 - drivers/spi/spidev.c | 1 - drivers/staging/fbtft/fbtft.h | 1 - drivers/staging/fbtft/flexfb.c | 1 - drivers/staging/iio/accel/adis16201_core.c | 1 - drivers/staging/iio/accel/adis16203_core.c | 1 - drivers/staging/iio/accel/adis16204_core.c | 1 - drivers/staging/iio/accel/adis16209_core.c | 1 - drivers/staging/iio/accel/adis16220_core.c | 1 - drivers/staging/iio/accel/adis16240_core.c | 1 - drivers/staging/iio/accel/lis3l02dq_core.c | 1 - drivers/staging/iio/accel/sca3000_core.c | 1 - drivers/staging/iio/adc/ad7192.c | 1 - drivers/staging/iio/adc/ad7280a.c | 1 - drivers/staging/iio/adc/ad7606_spi.c | 1 - drivers/staging/iio/adc/ad7780.c | 1 - drivers/staging/iio/adc/ad7816.c | 1 - drivers/staging/iio/addac/adt7316-spi.c | 1 - drivers/staging/iio/frequency/ad9832.c | 1 - drivers/staging/iio/frequency/ad9834.c | 1 - drivers/staging/iio/gyro/adis16060_core.c | 2 -- drivers/staging/iio/magnetometer/hmc5843_spi.c | 1 - drivers/staging/iio/meter/ade7753.c | 1 - drivers/staging/iio/meter/ade7754.c | 1 - drivers/staging/iio/meter/ade7758_core.c | 1 - drivers/staging/iio/meter/ade7759.c | 1 - drivers/staging/iio/meter/ade7854-spi.c | 1 - drivers/staging/iio/resolver/ad2s1200.c | 1 - drivers/staging/iio/resolver/ad2s1210.c | 1 - drivers/staging/iio/resolver/ad2s90.c | 1 - drivers/staging/mt29f_spinand/mt29f_spinand.c | 1 - drivers/tty/serial/ifx6x60.c | 2 +- drivers/tty/serial/max3100.c | 1 - drivers/tty/serial/max310x.c | 1 - drivers/tty/serial/sc16is7xx.c | 1 - drivers/usb/host/max3421-hcd.c | 1 - drivers/video/backlight/ams369fg06.c | 1 - drivers/video/backlight/corgi_lcd.c | 1 - drivers/video/backlight/ili922x.c | 1 - drivers/video/backlight/l4f00242t03.c | 1 - drivers/video/backlight/ld9040.c | 1 - drivers/video/backlight/lms283gf05.c | 1 - drivers/video/backlight/lms501kf03.c | 1 - drivers/video/backlight/ltv350qv.c | 1 - drivers/video/backlight/s6e63m0.c | 1 - drivers/video/backlight/tdo24m.c | 1 - drivers/video/backlight/tosa_lcd.c | 1 - drivers/video/backlight/vgg2432a4.c | 1 - drivers/video/fbdev/mmp/panel/tpo_tj032md01bw.c | 1 - drivers/video/fbdev/omap/lcd_mipid.c | 1 - drivers/video/fbdev/omap2/displays-new/panel-lgphilips-lb035q02.c | 1 - drivers/video/fbdev/omap2/displays-new/panel-nec-nl8048hl11.c | 1 - drivers/video/fbdev/omap2/displays-new/panel-sony-acx565akm.c | 1 - drivers/video/fbdev/omap2/displays-new/panel-tpo-td028ttec1.c | 1 - drivers/video/fbdev/omap2/displays-new/panel-tpo-td043mtea1.c | 1 - sound/soc/codecs/ad1836.c | 1 - sound/soc/codecs/ad193x-spi.c | 1 - sound/soc/codecs/adau1761-spi.c | 1 - sound/soc/codecs/adau1781-spi.c | 1 - sound/soc/codecs/adau1977-spi.c | 1 - sound/soc/codecs/adav801.c | 1 - sound/soc/codecs/ak4104.c | 1 - sound/soc/codecs/cs4271-spi.c | 1 - sound/soc/codecs/da7210.c | 1 - sound/soc/codecs/pcm1792a.c | 1 - sound/soc/codecs/pcm512x-spi.c | 1 - sound/soc/codecs/rt5677-spi.c | 1 - sound/soc/codecs/ssm2602-spi.c | 1 - sound/soc/codecs/tlv320aic23-spi.c | 1 - sound/soc/codecs/tlv320aic26.c | 1 - sound/soc/codecs/wm0010.c | 1 - sound/soc/codecs/wm8510.c | 1 - sound/soc/codecs/wm8711.c | 1 - sound/soc/codecs/wm8728.c | 1 - sound/soc/codecs/wm8731.c | 1 - sound/soc/codecs/wm8737.c | 1 - sound/soc/codecs/wm8741.c | 1 - sound/soc/codecs/wm8750.c | 1 - sound/soc/codecs/wm8753.c | 1 - sound/soc/codecs/wm8770.c | 1 - sound/soc/codecs/wm8776.c | 1 - sound/soc/codecs/wm8804-spi.c | 1 - sound/soc/codecs/wm8900.c | 1 - sound/soc/codecs/wm8983.c | 1 - sound/soc/codecs/wm8985.c | 1 - sound/soc/codecs/wm8988.c | 1 - sound/soc/codecs/wm8995.c | 1 - 203 files changed, 1 insertion(+), 205 deletions(-) diff --git a/arch/arm/mach-u300/dummyspichip.c b/arch/arm/mach-u300/dummyspichip.c index 131996805690..68fe986ca42e 100644 --- a/arch/arm/mach-u300/dummyspichip.c +++ b/arch/arm/mach-u300/dummyspichip.c @@ -264,7 +264,6 @@ static const struct of_device_id pl022_dummy_dt_match[] = { static struct spi_driver pl022_dummy_driver = { .driver = { .name = "spi-dummy", - .owner = THIS_MODULE, .of_match_table = pl022_dummy_dt_match, }, .probe = pl022_dummy_probe, diff --git a/arch/mips/txx9/generic/spi_eeprom.c b/arch/mips/txx9/generic/spi_eeprom.c index 3dbad99d5611..d833dd2c9b55 100644 --- a/arch/mips/txx9/generic/spi_eeprom.c +++ b/arch/mips/txx9/generic/spi_eeprom.c @@ -80,7 +80,6 @@ static int __init early_seeprom_probe(struct spi_device *spi) static struct spi_driver early_seeprom_driver __initdata = { .driver = { .name = "at25", - .owner = THIS_MODULE, }, .probe = early_seeprom_probe, }; diff --git a/drivers/char/tpm/st33zp24/spi.c b/drivers/char/tpm/st33zp24/spi.c index f0184a1b0c1c..f974c945c97a 100644 --- a/drivers/char/tpm/st33zp24/spi.c +++ b/drivers/char/tpm/st33zp24/spi.c @@ -381,7 +381,6 @@ static SIMPLE_DEV_PM_OPS(st33zp24_spi_ops, st33zp24_pm_suspend, static struct spi_driver tpm_st33_spi_driver = { .driver = { - .owner = THIS_MODULE, .name = TPM_ST33_SPI, .pm = &st33zp24_spi_ops, .of_match_table = of_match_ptr(of_st33zp24_spi_match), diff --git a/drivers/gpio/gpio-74x164.c b/drivers/gpio/gpio-74x164.c index e3d968f751f1..60172f835d15 100644 --- a/drivers/gpio/gpio-74x164.c +++ b/drivers/gpio/gpio-74x164.c @@ -183,7 +183,6 @@ MODULE_DEVICE_TABLE(of, gen_74x164_dt_ids); static struct spi_driver gen_74x164_driver = { .driver = { .name = "74x164", - .owner = THIS_MODULE, .of_match_table = gen_74x164_dt_ids, }, .probe = gen_74x164_probe, diff --git a/drivers/gpio/gpio-max7301.c b/drivers/gpio/gpio-max7301.c index 6e1c984a75d4..05813fbf3daf 100644 --- a/drivers/gpio/gpio-max7301.c +++ b/drivers/gpio/gpio-max7301.c @@ -87,7 +87,6 @@ MODULE_DEVICE_TABLE(spi, max7301_id); static struct spi_driver max7301_driver = { .driver = { .name = "max7301", - .owner = THIS_MODULE, }, .probe = max7301_probe, .remove = max7301_remove, diff --git a/drivers/gpio/gpio-mc33880.c b/drivers/gpio/gpio-mc33880.c index a431604c9e67..2853731db5bc 100644 --- a/drivers/gpio/gpio-mc33880.c +++ b/drivers/gpio/gpio-mc33880.c @@ -163,7 +163,6 @@ static int mc33880_remove(struct spi_device *spi) static struct spi_driver mc33880_driver = { .driver = { .name = DRIVER_NAME, - .owner = THIS_MODULE, }, .probe = mc33880_probe, .remove = mc33880_remove, diff --git a/drivers/gpio/gpio-mcp23s08.c b/drivers/gpio/gpio-mcp23s08.c index 73db7ecd7ffd..4a41694919da 100644 --- a/drivers/gpio/gpio-mcp23s08.c +++ b/drivers/gpio/gpio-mcp23s08.c @@ -848,7 +848,6 @@ MODULE_DEVICE_TABLE(i2c, mcp230xx_id); static struct i2c_driver mcp230xx_driver = { .driver = { .name = "mcp230xx", - .owner = THIS_MODULE, .of_match_table = of_match_ptr(mcp23s08_i2c_of_match), }, .probe = mcp230xx_probe, @@ -1021,7 +1020,6 @@ static struct spi_driver mcp23s08_driver = { .id_table = mcp23s08_ids, .driver = { .name = "mcp23s08", - .owner = THIS_MODULE, .of_match_table = of_match_ptr(mcp23s08_spi_of_match), }, }; diff --git a/drivers/gpu/drm/panel/panel-lg-lg4573.c b/drivers/gpu/drm/panel/panel-lg-lg4573.c index a7b4939cee6d..6989238b276a 100644 --- a/drivers/gpu/drm/panel/panel-lg-lg4573.c +++ b/drivers/gpu/drm/panel/panel-lg-lg4573.c @@ -287,7 +287,6 @@ static struct spi_driver lg4573_driver = { .remove = lg4573_remove, .driver = { .name = "lg4573", - .owner = THIS_MODULE, .of_match_table = lg4573_of_match, }, }; diff --git a/drivers/gpu/drm/panel/panel-samsung-ld9040.c b/drivers/gpu/drm/panel/panel-samsung-ld9040.c index b202377135e7..3cf4cf6a6942 100644 --- a/drivers/gpu/drm/panel/panel-samsung-ld9040.c +++ b/drivers/gpu/drm/panel/panel-samsung-ld9040.c @@ -378,7 +378,6 @@ static struct spi_driver ld9040_driver = { .remove = ld9040_remove, .driver = { .name = "panel-samsung-ld9040", - .owner = THIS_MODULE, .of_match_table = ld9040_of_match, }, }; diff --git a/drivers/hwmon/ad7314.c b/drivers/hwmon/ad7314.c index 11955467fc0f..202c1fbb3407 100644 --- a/drivers/hwmon/ad7314.c +++ b/drivers/hwmon/ad7314.c @@ -157,7 +157,6 @@ MODULE_DEVICE_TABLE(spi, ad7314_id); static struct spi_driver ad7314_driver = { .driver = { .name = "ad7314", - .owner = THIS_MODULE, }, .probe = ad7314_probe, .remove = ad7314_remove, diff --git a/drivers/hwmon/adcxx.c b/drivers/hwmon/adcxx.c index 04c08c2f79b8..69e0bb97e597 100644 --- a/drivers/hwmon/adcxx.c +++ b/drivers/hwmon/adcxx.c @@ -234,7 +234,6 @@ MODULE_DEVICE_TABLE(spi, adcxx_ids); static struct spi_driver adcxx_driver = { .driver = { .name = "adcxx", - .owner = THIS_MODULE, }, .id_table = adcxx_ids, .probe = adcxx_probe, diff --git a/drivers/hwmon/ads7871.c b/drivers/hwmon/ads7871.c index 3eff73b6220d..4fd9e4de1972 100644 --- a/drivers/hwmon/ads7871.c +++ b/drivers/hwmon/ads7871.c @@ -237,7 +237,6 @@ static int ads7871_remove(struct spi_device *spi) static struct spi_driver ads7871_driver = { .driver = { .name = DEVICE_NAME, - .owner = THIS_MODULE, }, .probe = ads7871_probe, diff --git a/drivers/hwmon/adt7310.c b/drivers/hwmon/adt7310.c index 5994cf68e0a4..ec02f4f0d67a 100644 --- a/drivers/hwmon/adt7310.c +++ b/drivers/hwmon/adt7310.c @@ -104,7 +104,6 @@ MODULE_DEVICE_TABLE(spi, adt7310_id); static struct spi_driver adt7310_driver = { .driver = { .name = "adt7310", - .owner = THIS_MODULE, .pm = ADT7X10_DEV_PM_OPS, }, .probe = adt7310_spi_probe, diff --git a/drivers/hwmon/lm70.c b/drivers/hwmon/lm70.c index 9296e9daf774..583f883a4cfe 100644 --- a/drivers/hwmon/lm70.c +++ b/drivers/hwmon/lm70.c @@ -199,7 +199,6 @@ MODULE_DEVICE_TABLE(spi, lm70_ids); static struct spi_driver lm70_driver = { .driver = { .name = "lm70", - .owner = THIS_MODULE, .of_match_table = of_match_ptr(lm70_of_ids), }, .id_table = lm70_ids, diff --git a/drivers/hwmon/max1111.c b/drivers/hwmon/max1111.c index f67d71ee8386..36544c4f653c 100644 --- a/drivers/hwmon/max1111.c +++ b/drivers/hwmon/max1111.c @@ -277,7 +277,6 @@ MODULE_DEVICE_TABLE(spi, max1111_ids); static struct spi_driver max1111_driver = { .driver = { .name = "max1111", - .owner = THIS_MODULE, }, .id_table = max1111_ids, .probe = max1111_probe, diff --git a/drivers/iio/accel/kxsd9.c b/drivers/iio/accel/kxsd9.c index 98ba761cbb9c..923f56598d4b 100644 --- a/drivers/iio/accel/kxsd9.c +++ b/drivers/iio/accel/kxsd9.c @@ -263,7 +263,6 @@ MODULE_DEVICE_TABLE(spi, kxsd9_id); static struct spi_driver kxsd9_driver = { .driver = { .name = "kxsd9", - .owner = THIS_MODULE, }, .probe = kxsd9_probe, .remove = kxsd9_remove, diff --git a/drivers/iio/accel/st_accel_spi.c b/drivers/iio/accel/st_accel_spi.c index 54b61a3961c3..f71b0d391272 100644 --- a/drivers/iio/accel/st_accel_spi.c +++ b/drivers/iio/accel/st_accel_spi.c @@ -64,7 +64,6 @@ MODULE_DEVICE_TABLE(spi, st_accel_id_table); static struct spi_driver st_accel_driver = { .driver = { - .owner = THIS_MODULE, .name = "st-accel-spi", }, .probe = st_accel_spi_probe, diff --git a/drivers/iio/adc/ad7266.c b/drivers/iio/adc/ad7266.c index 70f78c3062a7..21e19b60e2b9 100644 --- a/drivers/iio/adc/ad7266.c +++ b/drivers/iio/adc/ad7266.c @@ -509,7 +509,6 @@ MODULE_DEVICE_TABLE(spi, ad7266_id); static struct spi_driver ad7266_driver = { .driver = { .name = "ad7266", - .owner = THIS_MODULE, }, .probe = ad7266_probe, .remove = ad7266_remove, diff --git a/drivers/iio/adc/ad7298.c b/drivers/iio/adc/ad7298.c index 4a8c0a2f49b6..62bb8f7ce4a0 100644 --- a/drivers/iio/adc/ad7298.c +++ b/drivers/iio/adc/ad7298.c @@ -378,7 +378,6 @@ MODULE_DEVICE_TABLE(spi, ad7298_id); static struct spi_driver ad7298_driver = { .driver = { .name = "ad7298", - .owner = THIS_MODULE, }, .probe = ad7298_probe, .remove = ad7298_remove, diff --git a/drivers/iio/adc/ad7476.c b/drivers/iio/adc/ad7476.c index ce400ec176f1..be85c2a0ad97 100644 --- a/drivers/iio/adc/ad7476.c +++ b/drivers/iio/adc/ad7476.c @@ -302,7 +302,6 @@ MODULE_DEVICE_TABLE(spi, ad7476_id); static struct spi_driver ad7476_driver = { .driver = { .name = "ad7476", - .owner = THIS_MODULE, }, .probe = ad7476_probe, .remove = ad7476_remove, diff --git a/drivers/iio/adc/ad7791.c b/drivers/iio/adc/ad7791.c index c19f8fd1b4b7..cf172d58cd44 100644 --- a/drivers/iio/adc/ad7791.c +++ b/drivers/iio/adc/ad7791.c @@ -440,7 +440,6 @@ MODULE_DEVICE_TABLE(spi, ad7791_spi_ids); static struct spi_driver ad7791_driver = { .driver = { .name = "ad7791", - .owner = THIS_MODULE, }, .probe = ad7791_probe, .remove = ad7791_remove, diff --git a/drivers/iio/adc/ad7793.c b/drivers/iio/adc/ad7793.c index b84922a4b32e..eea0c79111e7 100644 --- a/drivers/iio/adc/ad7793.c +++ b/drivers/iio/adc/ad7793.c @@ -852,7 +852,6 @@ MODULE_DEVICE_TABLE(spi, ad7793_id); static struct spi_driver ad7793_driver = { .driver = { .name = "ad7793", - .owner = THIS_MODULE, }, .probe = ad7793_probe, .remove = ad7793_remove, diff --git a/drivers/iio/adc/ad7887.c b/drivers/iio/adc/ad7887.c index 2fd012ee99f5..2d3c397e66ad 100644 --- a/drivers/iio/adc/ad7887.c +++ b/drivers/iio/adc/ad7887.c @@ -356,7 +356,6 @@ MODULE_DEVICE_TABLE(spi, ad7887_id); static struct spi_driver ad7887_driver = { .driver = { .name = "ad7887", - .owner = THIS_MODULE, }, .probe = ad7887_probe, .remove = ad7887_remove, diff --git a/drivers/iio/adc/ad7923.c b/drivers/iio/adc/ad7923.c index 28732c28e819..45e29ccd824f 100644 --- a/drivers/iio/adc/ad7923.c +++ b/drivers/iio/adc/ad7923.c @@ -357,7 +357,6 @@ MODULE_DEVICE_TABLE(spi, ad7923_id); static struct spi_driver ad7923_driver = { .driver = { .name = "ad7923", - .owner = THIS_MODULE, }, .probe = ad7923_probe, .remove = ad7923_remove, diff --git a/drivers/iio/adc/max1027.c b/drivers/iio/adc/max1027.c index 44bf815adb6c..3bc059c69824 100644 --- a/drivers/iio/adc/max1027.c +++ b/drivers/iio/adc/max1027.c @@ -508,7 +508,6 @@ static int max1027_remove(struct spi_device *spi) static struct spi_driver max1027_driver = { .driver = { .name = "max1027", - .owner = THIS_MODULE, }, .probe = max1027_probe, .remove = max1027_remove, diff --git a/drivers/iio/adc/mcp320x.c b/drivers/iio/adc/mcp320x.c index b19e4f9d16e0..d5d8b4180914 100644 --- a/drivers/iio/adc/mcp320x.c +++ b/drivers/iio/adc/mcp320x.c @@ -404,7 +404,6 @@ MODULE_DEVICE_TABLE(spi, mcp320x_id); static struct spi_driver mcp320x_driver = { .driver = { .name = "mcp320x", - .owner = THIS_MODULE, }, .probe = mcp320x_probe, .remove = mcp320x_remove, diff --git a/drivers/iio/adc/ti-adc128s052.c b/drivers/iio/adc/ti-adc128s052.c index 915be6b60097..76b619649409 100644 --- a/drivers/iio/adc/ti-adc128s052.c +++ b/drivers/iio/adc/ti-adc128s052.c @@ -184,7 +184,6 @@ MODULE_DEVICE_TABLE(spi, adc128_id); static struct spi_driver adc128_driver = { .driver = { .name = "adc128s052", - .owner = THIS_MODULE, }, .probe = adc128_probe, .remove = adc128_remove, diff --git a/drivers/iio/amplifiers/ad8366.c b/drivers/iio/amplifiers/ad8366.c index c0d364ebaea8..6da31e4dbdd4 100644 --- a/drivers/iio/amplifiers/ad8366.c +++ b/drivers/iio/amplifiers/ad8366.c @@ -199,7 +199,6 @@ static const struct spi_device_id ad8366_id[] = { static struct spi_driver ad8366_driver = { .driver = { .name = KBUILD_MODNAME, - .owner = THIS_MODULE, }, .probe = ad8366_probe, .remove = ad8366_remove, diff --git a/drivers/iio/common/ssp_sensors/ssp_dev.c b/drivers/iio/common/ssp_sensors/ssp_dev.c index d338bb595db3..ea7adb638d99 100644 --- a/drivers/iio/common/ssp_sensors/ssp_dev.c +++ b/drivers/iio/common/ssp_sensors/ssp_dev.c @@ -700,7 +700,6 @@ static struct spi_driver ssp_driver = { .remove = ssp_remove, .driver = { .pm = &ssp_pm_ops, - .owner = THIS_MODULE, .of_match_table = of_match_ptr(ssp_of_match), .name = "sensorhub" }, diff --git a/drivers/iio/dac/ad5064.c b/drivers/iio/dac/ad5064.c index c067e6821496..9e4d2c18b554 100644 --- a/drivers/iio/dac/ad5064.c +++ b/drivers/iio/dac/ad5064.c @@ -568,7 +568,6 @@ MODULE_DEVICE_TABLE(spi, ad5064_spi_ids); static struct spi_driver ad5064_spi_driver = { .driver = { .name = "ad5064", - .owner = THIS_MODULE, }, .probe = ad5064_spi_probe, .remove = ad5064_spi_remove, diff --git a/drivers/iio/dac/ad5360.c b/drivers/iio/dac/ad5360.c index 64634d7f578e..8ba0e9c50176 100644 --- a/drivers/iio/dac/ad5360.c +++ b/drivers/iio/dac/ad5360.c @@ -549,7 +549,6 @@ MODULE_DEVICE_TABLE(spi, ad5360_ids); static struct spi_driver ad5360_driver = { .driver = { .name = "ad5360", - .owner = THIS_MODULE, }, .probe = ad5360_probe, .remove = ad5360_remove, diff --git a/drivers/iio/dac/ad5380.c b/drivers/iio/dac/ad5380.c index 130de9b3e0bf..97d2c5111f43 100644 --- a/drivers/iio/dac/ad5380.c +++ b/drivers/iio/dac/ad5380.c @@ -519,7 +519,6 @@ MODULE_DEVICE_TABLE(spi, ad5380_spi_ids); static struct spi_driver ad5380_spi_driver = { .driver = { .name = "ad5380", - .owner = THIS_MODULE, }, .probe = ad5380_spi_probe, .remove = ad5380_spi_remove, diff --git a/drivers/iio/dac/ad5421.c b/drivers/iio/dac/ad5421.c index 787ef1d859c6..968712be967f 100644 --- a/drivers/iio/dac/ad5421.c +++ b/drivers/iio/dac/ad5421.c @@ -524,7 +524,6 @@ static int ad5421_probe(struct spi_device *spi) static struct spi_driver ad5421_driver = { .driver = { .name = "ad5421", - .owner = THIS_MODULE, }, .probe = ad5421_probe, }; diff --git a/drivers/iio/dac/ad5446.c b/drivers/iio/dac/ad5446.c index 07e17d72a3f3..b555552a0d80 100644 --- a/drivers/iio/dac/ad5446.c +++ b/drivers/iio/dac/ad5446.c @@ -481,7 +481,6 @@ static int ad5446_spi_remove(struct spi_device *spi) static struct spi_driver ad5446_spi_driver = { .driver = { .name = "ad5446", - .owner = THIS_MODULE, }, .probe = ad5446_spi_probe, .remove = ad5446_spi_remove, diff --git a/drivers/iio/dac/ad5449.c b/drivers/iio/dac/ad5449.c index 64d7256cbb6d..5f3202339420 100644 --- a/drivers/iio/dac/ad5449.c +++ b/drivers/iio/dac/ad5449.c @@ -356,7 +356,6 @@ MODULE_DEVICE_TABLE(spi, ad5449_spi_ids); static struct spi_driver ad5449_spi_driver = { .driver = { .name = "ad5449", - .owner = THIS_MODULE, }, .probe = ad5449_spi_probe, .remove = ad5449_spi_remove, diff --git a/drivers/iio/dac/ad5504.c b/drivers/iio/dac/ad5504.c index 581ec141de3d..88b2c92e243b 100644 --- a/drivers/iio/dac/ad5504.c +++ b/drivers/iio/dac/ad5504.c @@ -364,7 +364,6 @@ MODULE_DEVICE_TABLE(spi, ad5504_id); static struct spi_driver ad5504_driver = { .driver = { .name = "ad5504", - .owner = THIS_MODULE, }, .probe = ad5504_probe, .remove = ad5504_remove, diff --git a/drivers/iio/dac/ad5624r_spi.c b/drivers/iio/dac/ad5624r_spi.c index e98428df0d44..5489ec43b95d 100644 --- a/drivers/iio/dac/ad5624r_spi.c +++ b/drivers/iio/dac/ad5624r_spi.c @@ -306,7 +306,6 @@ MODULE_DEVICE_TABLE(spi, ad5624r_id); static struct spi_driver ad5624r_driver = { .driver = { .name = "ad5624r", - .owner = THIS_MODULE, }, .probe = ad5624r_probe, .remove = ad5624r_remove, diff --git a/drivers/iio/dac/ad5686.c b/drivers/iio/dac/ad5686.c index 15c73e20272d..d1d8450c19f6 100644 --- a/drivers/iio/dac/ad5686.c +++ b/drivers/iio/dac/ad5686.c @@ -395,7 +395,6 @@ MODULE_DEVICE_TABLE(spi, ad5686_id); static struct spi_driver ad5686_driver = { .driver = { .name = "ad5686", - .owner = THIS_MODULE, }, .probe = ad5686_probe, .remove = ad5686_remove, diff --git a/drivers/iio/dac/ad5755.c b/drivers/iio/dac/ad5755.c index a7c851f62d7c..bfb350a85a16 100644 --- a/drivers/iio/dac/ad5755.c +++ b/drivers/iio/dac/ad5755.c @@ -610,7 +610,6 @@ MODULE_DEVICE_TABLE(spi, ad5755_id); static struct spi_driver ad5755_driver = { .driver = { .name = "ad5755", - .owner = THIS_MODULE, }, .probe = ad5755_probe, .id_table = ad5755_id, diff --git a/drivers/iio/dac/ad5764.c b/drivers/iio/dac/ad5764.c index d0d38165339d..9a547bbf7d2b 100644 --- a/drivers/iio/dac/ad5764.c +++ b/drivers/iio/dac/ad5764.c @@ -357,7 +357,6 @@ MODULE_DEVICE_TABLE(spi, ad5764_ids); static struct spi_driver ad5764_driver = { .driver = { .name = "ad5764", - .owner = THIS_MODULE, }, .probe = ad5764_probe, .remove = ad5764_remove, diff --git a/drivers/iio/dac/ad5791.c b/drivers/iio/dac/ad5791.c index 5ba785f18589..33e4ae5c42f8 100644 --- a/drivers/iio/dac/ad5791.c +++ b/drivers/iio/dac/ad5791.c @@ -461,7 +461,6 @@ MODULE_DEVICE_TABLE(spi, ad5791_id); static struct spi_driver ad5791_driver = { .driver = { .name = "ad5791", - .owner = THIS_MODULE, }, .probe = ad5791_probe, .remove = ad5791_remove, diff --git a/drivers/iio/dac/ad7303.c b/drivers/iio/dac/ad7303.c index fa2810032968..399de2cfeb16 100644 --- a/drivers/iio/dac/ad7303.c +++ b/drivers/iio/dac/ad7303.c @@ -290,7 +290,6 @@ MODULE_DEVICE_TABLE(spi, ad7303_spi_ids); static struct spi_driver ad7303_driver = { .driver = { .name = "ad7303", - .owner = THIS_MODULE, }, .probe = ad7303_probe, .remove = ad7303_remove, diff --git a/drivers/iio/dac/mcp4922.c b/drivers/iio/dac/mcp4922.c index 92cf4ca6981d..3854d201a5d6 100644 --- a/drivers/iio/dac/mcp4922.c +++ b/drivers/iio/dac/mcp4922.c @@ -203,7 +203,6 @@ MODULE_DEVICE_TABLE(spi, mcp4922_id); static struct spi_driver mcp4922_driver = { .driver = { .name = "mcp4922", - .owner = THIS_MODULE, }, .probe = mcp4922_probe, .remove = mcp4922_remove, diff --git a/drivers/iio/frequency/ad9523.c b/drivers/iio/frequency/ad9523.c index 50ed8d1ca45a..44a30f286de1 100644 --- a/drivers/iio/frequency/ad9523.c +++ b/drivers/iio/frequency/ad9523.c @@ -1027,7 +1027,6 @@ MODULE_DEVICE_TABLE(spi, ad9523_id); static struct spi_driver ad9523_driver = { .driver = { .name = "ad9523", - .owner = THIS_MODULE, }, .probe = ad9523_probe, .remove = ad9523_remove, diff --git a/drivers/iio/frequency/adf4350.c b/drivers/iio/frequency/adf4350.c index 9890c81c027d..b83534cc2ab1 100644 --- a/drivers/iio/frequency/adf4350.c +++ b/drivers/iio/frequency/adf4350.c @@ -625,7 +625,6 @@ static const struct spi_device_id adf4350_id[] = { static struct spi_driver adf4350_driver = { .driver = { .name = "adf4350", - .owner = THIS_MODULE, }, .probe = adf4350_probe, .remove = adf4350_remove, diff --git a/drivers/iio/gyro/adis16080.c b/drivers/iio/gyro/adis16080.c index add509837269..ad31a1372a04 100644 --- a/drivers/iio/gyro/adis16080.c +++ b/drivers/iio/gyro/adis16080.c @@ -228,7 +228,6 @@ MODULE_DEVICE_TABLE(spi, adis16080_ids); static struct spi_driver adis16080_driver = { .driver = { .name = "adis16080", - .owner = THIS_MODULE, }, .probe = adis16080_probe, .remove = adis16080_remove, diff --git a/drivers/iio/gyro/adis16130.c b/drivers/iio/gyro/adis16130.c index 8d08c7ed1ea6..e5241f41e65e 100644 --- a/drivers/iio/gyro/adis16130.c +++ b/drivers/iio/gyro/adis16130.c @@ -167,7 +167,6 @@ static int adis16130_probe(struct spi_device *spi) static struct spi_driver adis16130_driver = { .driver = { .name = "adis16130", - .owner = THIS_MODULE, }, .probe = adis16130_probe, }; diff --git a/drivers/iio/gyro/adis16136.c b/drivers/iio/gyro/adis16136.c index 26de876b223d..f8d1c2210066 100644 --- a/drivers/iio/gyro/adis16136.c +++ b/drivers/iio/gyro/adis16136.c @@ -570,7 +570,6 @@ MODULE_DEVICE_TABLE(spi, adis16136_ids); static struct spi_driver adis16136_driver = { .driver = { .name = "adis16136", - .owner = THIS_MODULE, }, .id_table = adis16136_ids, .probe = adis16136_probe, diff --git a/drivers/iio/gyro/adis16260.c b/drivers/iio/gyro/adis16260.c index 00c6ad9bf35f..7da8825f4791 100644 --- a/drivers/iio/gyro/adis16260.c +++ b/drivers/iio/gyro/adis16260.c @@ -435,7 +435,6 @@ MODULE_DEVICE_TABLE(spi, adis16260_id); static struct spi_driver adis16260_driver = { .driver = { .name = "adis16260", - .owner = THIS_MODULE, }, .probe = adis16260_probe, .remove = adis16260_remove, diff --git a/drivers/iio/gyro/adxrs450.c b/drivers/iio/gyro/adxrs450.c index eb0e08ec9e20..a330d4288bb0 100644 --- a/drivers/iio/gyro/adxrs450.c +++ b/drivers/iio/gyro/adxrs450.c @@ -456,7 +456,6 @@ MODULE_DEVICE_TABLE(spi, adxrs450_id); static struct spi_driver adxrs450_driver = { .driver = { .name = "adxrs450", - .owner = THIS_MODULE, }, .probe = adxrs450_probe, .id_table = adxrs450_id, diff --git a/drivers/iio/gyro/st_gyro_spi.c b/drivers/iio/gyro/st_gyro_spi.c index e59bead6bc3c..d2b7a5fa344c 100644 --- a/drivers/iio/gyro/st_gyro_spi.c +++ b/drivers/iio/gyro/st_gyro_spi.c @@ -60,7 +60,6 @@ MODULE_DEVICE_TABLE(spi, st_gyro_id_table); static struct spi_driver st_gyro_driver = { .driver = { - .owner = THIS_MODULE, .name = "st-gyro-spi", }, .probe = st_gyro_spi_probe, diff --git a/drivers/iio/imu/adis16400_core.c b/drivers/iio/imu/adis16400_core.c index abc4c50de9e8..0618f831ecd4 100644 --- a/drivers/iio/imu/adis16400_core.c +++ b/drivers/iio/imu/adis16400_core.c @@ -986,7 +986,6 @@ MODULE_DEVICE_TABLE(spi, adis16400_id); static struct spi_driver adis16400_driver = { .driver = { .name = "adis16400", - .owner = THIS_MODULE, }, .id_table = adis16400_id, .probe = adis16400_probe, diff --git a/drivers/iio/imu/adis16480.c b/drivers/iio/imu/adis16480.c index b94bfd3f595b..2485b88ee1b6 100644 --- a/drivers/iio/imu/adis16480.c +++ b/drivers/iio/imu/adis16480.c @@ -896,7 +896,6 @@ MODULE_DEVICE_TABLE(spi, adis16480_ids); static struct spi_driver adis16480_driver = { .driver = { .name = "adis16480", - .owner = THIS_MODULE, }, .id_table = adis16480_ids, .probe = adis16480_probe, diff --git a/drivers/iio/magnetometer/st_magn_spi.c b/drivers/iio/magnetometer/st_magn_spi.c index 0abca2c6afa6..6325e7dc8e03 100644 --- a/drivers/iio/magnetometer/st_magn_spi.c +++ b/drivers/iio/magnetometer/st_magn_spi.c @@ -58,7 +58,6 @@ MODULE_DEVICE_TABLE(spi, st_magn_id_table); static struct spi_driver st_magn_driver = { .driver = { - .owner = THIS_MODULE, .name = "st-magn-spi", }, .probe = st_magn_spi_probe, diff --git a/drivers/iio/pressure/ms5611_spi.c b/drivers/iio/pressure/ms5611_spi.c index 08ee6e88c79f..aaa0c4ba91a7 100644 --- a/drivers/iio/pressure/ms5611_spi.c +++ b/drivers/iio/pressure/ms5611_spi.c @@ -117,7 +117,6 @@ MODULE_DEVICE_TABLE(spi, ms5611_id); static struct spi_driver ms5611_driver = { .driver = { .name = "ms5611", - .owner = THIS_MODULE, }, .id_table = ms5611_id, .probe = ms5611_spi_probe, diff --git a/drivers/iio/pressure/st_pressure_spi.c b/drivers/iio/pressure/st_pressure_spi.c index 1ffa6d4d349c..40c0692ff1de 100644 --- a/drivers/iio/pressure/st_pressure_spi.c +++ b/drivers/iio/pressure/st_pressure_spi.c @@ -56,7 +56,6 @@ MODULE_DEVICE_TABLE(spi, st_press_id_table); static struct spi_driver st_press_driver = { .driver = { - .owner = THIS_MODULE, .name = "st-press-spi", }, .probe = st_press_spi_probe, diff --git a/drivers/iio/proximity/as3935.c b/drivers/iio/proximity/as3935.c index bc0d68efd455..2865aa63f4f1 100644 --- a/drivers/iio/proximity/as3935.c +++ b/drivers/iio/proximity/as3935.c @@ -443,7 +443,6 @@ MODULE_DEVICE_TABLE(spi, as3935_id); static struct spi_driver as3935_driver = { .driver = { .name = "as3935", - .owner = THIS_MODULE, .pm = AS3935_PM_OPS, }, .probe = as3935_probe, diff --git a/drivers/input/misc/ad714x-spi.c b/drivers/input/misc/ad714x-spi.c index a79e50b58bf5..fea315e76bc8 100644 --- a/drivers/input/misc/ad714x-spi.c +++ b/drivers/input/misc/ad714x-spi.c @@ -113,7 +113,6 @@ static int ad714x_spi_remove(struct spi_device *spi) static struct spi_driver ad714x_spi_driver = { .driver = { .name = "ad714x_captouch", - .owner = THIS_MODULE, .pm = &ad714x_spi_pm, }, .probe = ad714x_spi_probe, diff --git a/drivers/input/misc/adxl34x-spi.c b/drivers/input/misc/adxl34x-spi.c index da6e76b58dab..3ec03ad88eed 100644 --- a/drivers/input/misc/adxl34x-spi.c +++ b/drivers/input/misc/adxl34x-spi.c @@ -120,7 +120,6 @@ static SIMPLE_DEV_PM_OPS(adxl34x_spi_pm, adxl34x_spi_suspend, static struct spi_driver adxl34x_driver = { .driver = { .name = "adxl34x", - .owner = THIS_MODULE, .pm = &adxl34x_spi_pm, }, .probe = adxl34x_spi_probe, diff --git a/drivers/input/touchscreen/ad7877.c b/drivers/input/touchscreen/ad7877.c index da4e5bb5e045..9c250ae780d9 100644 --- a/drivers/input/touchscreen/ad7877.c +++ b/drivers/input/touchscreen/ad7877.c @@ -843,7 +843,6 @@ static SIMPLE_DEV_PM_OPS(ad7877_pm, ad7877_suspend, ad7877_resume); static struct spi_driver ad7877_driver = { .driver = { .name = "ad7877", - .owner = THIS_MODULE, .pm = &ad7877_pm, }, .probe = ad7877_probe, diff --git a/drivers/input/touchscreen/ad7879-spi.c b/drivers/input/touchscreen/ad7879-spi.c index 1a7b1143536e..48033c2689ab 100644 --- a/drivers/input/touchscreen/ad7879-spi.c +++ b/drivers/input/touchscreen/ad7879-spi.c @@ -149,7 +149,6 @@ static int ad7879_spi_remove(struct spi_device *spi) static struct spi_driver ad7879_spi_driver = { .driver = { .name = "ad7879", - .owner = THIS_MODULE, .pm = &ad7879_pm_ops, }, .probe = ad7879_spi_probe, diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c index 0f5f968592bd..7f268cd81c5e 100644 --- a/drivers/input/touchscreen/ads7846.c +++ b/drivers/input/touchscreen/ads7846.c @@ -1496,7 +1496,6 @@ static int ads7846_remove(struct spi_device *spi) static struct spi_driver ads7846_driver = { .driver = { .name = "ads7846", - .owner = THIS_MODULE, .pm = &ads7846_pm, .of_match_table = of_match_ptr(ads7846_dt_ids), }, diff --git a/drivers/input/touchscreen/cyttsp4_spi.c b/drivers/input/touchscreen/cyttsp4_spi.c index b19434cebbf6..ec5f7c74f048 100644 --- a/drivers/input/touchscreen/cyttsp4_spi.c +++ b/drivers/input/touchscreen/cyttsp4_spi.c @@ -185,7 +185,6 @@ static int cyttsp4_spi_remove(struct spi_device *spi) static struct spi_driver cyttsp4_spi_driver = { .driver = { .name = CYTTSP4_SPI_NAME, - .owner = THIS_MODULE, .pm = &cyttsp4_pm_ops, }, .probe = cyttsp4_spi_probe, diff --git a/drivers/input/touchscreen/cyttsp_spi.c b/drivers/input/touchscreen/cyttsp_spi.c index 4728bcb1916c..bbeeb2488b57 100644 --- a/drivers/input/touchscreen/cyttsp_spi.c +++ b/drivers/input/touchscreen/cyttsp_spi.c @@ -182,7 +182,6 @@ static int cyttsp_spi_remove(struct spi_device *spi) static struct spi_driver cyttsp_spi_driver = { .driver = { .name = CY_SPI_NAME, - .owner = THIS_MODULE, .pm = &cyttsp_pm_ops, }, .probe = cyttsp_spi_probe, diff --git a/drivers/input/touchscreen/tsc2005.c b/drivers/input/touchscreen/tsc2005.c index 0f65d02eeb26..f41f23318484 100644 --- a/drivers/input/touchscreen/tsc2005.c +++ b/drivers/input/touchscreen/tsc2005.c @@ -752,7 +752,6 @@ static SIMPLE_DEV_PM_OPS(tsc2005_pm_ops, tsc2005_suspend, tsc2005_resume); static struct spi_driver tsc2005_driver = { .driver = { .name = "tsc2005", - .owner = THIS_MODULE, .pm = &tsc2005_pm_ops, }, .probe = tsc2005_probe, diff --git a/drivers/leds/leds-dac124s085.c b/drivers/leds/leds-dac124s085.c index db3ba8b42517..314159610d24 100644 --- a/drivers/leds/leds-dac124s085.c +++ b/drivers/leds/leds-dac124s085.c @@ -122,7 +122,6 @@ static struct spi_driver dac124s085_driver = { .remove = dac124s085_remove, .driver = { .name = "dac124s085", - .owner = THIS_MODULE, }, }; diff --git a/drivers/media/i2c/s5c73m3/s5c73m3-spi.c b/drivers/media/i2c/s5c73m3/s5c73m3-spi.c index fa4a5ebda6b2..d744b170c9ed 100644 --- a/drivers/media/i2c/s5c73m3/s5c73m3-spi.c +++ b/drivers/media/i2c/s5c73m3/s5c73m3-spi.c @@ -149,7 +149,6 @@ int s5c73m3_register_spi_driver(struct s5c73m3 *state) spidrv->remove = s5c73m3_spi_remove; spidrv->probe = s5c73m3_spi_probe; spidrv->driver.name = S5C73M3_SPI_DRV_NAME; - spidrv->driver.owner = THIS_MODULE; spidrv->driver.of_match_table = s5c73m3_spi_ids; return spi_register_driver(spidrv); diff --git a/drivers/media/tuners/msi001.c b/drivers/media/tuners/msi001.c index b533240f8ec0..3a12ef35682b 100644 --- a/drivers/media/tuners/msi001.c +++ b/drivers/media/tuners/msi001.c @@ -513,7 +513,6 @@ MODULE_DEVICE_TABLE(spi, msi001_id_table); static struct spi_driver msi001_driver = { .driver = { .name = "msi001", - .owner = THIS_MODULE, .suppress_bind_attrs = true, }, .probe = msi001_probe, diff --git a/drivers/mfd/arizona-spi.c b/drivers/mfd/arizona-spi.c index 1e845f6d407b..03d62f7b4720 100644 --- a/drivers/mfd/arizona-spi.c +++ b/drivers/mfd/arizona-spi.c @@ -93,7 +93,6 @@ MODULE_DEVICE_TABLE(spi, arizona_spi_ids); static struct spi_driver arizona_spi_driver = { .driver = { .name = "arizona", - .owner = THIS_MODULE, .pm = &arizona_pm_ops, .of_match_table = of_match_ptr(arizona_of_match), }, diff --git a/drivers/mfd/cros_ec_spi.c b/drivers/mfd/cros_ec_spi.c index 30a296b4e748..6a0f6ec67c6b 100644 --- a/drivers/mfd/cros_ec_spi.c +++ b/drivers/mfd/cros_ec_spi.c @@ -717,7 +717,6 @@ static struct spi_driver cros_ec_driver_spi = { .driver = { .name = "cros-ec-spi", .of_match_table = of_match_ptr(cros_ec_spi_of_match), - .owner = THIS_MODULE, .pm = &cros_ec_spi_pm_ops, }, .probe = cros_ec_spi_probe, diff --git a/drivers/mfd/da9052-spi.c b/drivers/mfd/da9052-spi.c index b5de8a6856c0..71b89dd4e8de 100644 --- a/drivers/mfd/da9052-spi.c +++ b/drivers/mfd/da9052-spi.c @@ -86,7 +86,6 @@ static struct spi_driver da9052_spi_driver = { .id_table = da9052_spi_id, .driver = { .name = "da9052", - .owner = THIS_MODULE, }, }; diff --git a/drivers/mfd/ezx-pcap.c b/drivers/mfd/ezx-pcap.c index a76eb6ef47a0..7841a20b5878 100644 --- a/drivers/mfd/ezx-pcap.c +++ b/drivers/mfd/ezx-pcap.c @@ -513,7 +513,6 @@ static struct spi_driver ezxpcap_driver = { .remove = ezx_pcap_remove, .driver = { .name = "ezx-pcap", - .owner = THIS_MODULE, }, }; diff --git a/drivers/mfd/mc13xxx-spi.c b/drivers/mfd/mc13xxx-spi.c index 58a170e45d88..cbc1e5ed599c 100644 --- a/drivers/mfd/mc13xxx-spi.c +++ b/drivers/mfd/mc13xxx-spi.c @@ -177,7 +177,6 @@ static struct spi_driver mc13xxx_spi_driver = { .id_table = mc13xxx_device_id, .driver = { .name = "mc13xxx", - .owner = THIS_MODULE, .of_match_table = mc13xxx_dt_ids, }, .probe = mc13xxx_spi_probe, diff --git a/drivers/mfd/stmpe-spi.c b/drivers/mfd/stmpe-spi.c index 618ba244d98a..f8b14ab8b9d7 100644 --- a/drivers/mfd/stmpe-spi.c +++ b/drivers/mfd/stmpe-spi.c @@ -135,7 +135,6 @@ static struct spi_driver stmpe_spi_driver = { .driver = { .name = "stmpe-spi", .of_match_table = of_match_ptr(stmpe_spi_of_match), - .owner = THIS_MODULE, #ifdef CONFIG_PM .pm = &stmpe_dev_pm_ops, #endif diff --git a/drivers/mfd/tps65912-spi.c b/drivers/mfd/tps65912-spi.c index de60ad98bd9f..d59aa55b1495 100644 --- a/drivers/mfd/tps65912-spi.c +++ b/drivers/mfd/tps65912-spi.c @@ -111,7 +111,6 @@ static int tps65912_spi_remove(struct spi_device *spi) static struct spi_driver tps65912_spi_driver = { .driver = { .name = "tps65912", - .owner = THIS_MODULE, }, .probe = tps65912_spi_probe, .remove = tps65912_spi_remove, diff --git a/drivers/mfd/wm831x-spi.c b/drivers/mfd/wm831x-spi.c index b8a5e3b34ec7..80482aeb246a 100644 --- a/drivers/mfd/wm831x-spi.c +++ b/drivers/mfd/wm831x-spi.c @@ -96,7 +96,6 @@ MODULE_DEVICE_TABLE(spi, wm831x_spi_ids); static struct spi_driver wm831x_spi_driver = { .driver = { .name = "wm831x", - .owner = THIS_MODULE, .pm = &wm831x_spi_pm, }, .id_table = wm831x_spi_ids, diff --git a/drivers/misc/ad525x_dpot-spi.c b/drivers/misc/ad525x_dpot-spi.c index f4c82eafa8e5..39a7f517ee7e 100644 --- a/drivers/misc/ad525x_dpot-spi.c +++ b/drivers/misc/ad525x_dpot-spi.c @@ -132,7 +132,6 @@ MODULE_DEVICE_TABLE(spi, ad_dpot_spi_id); static struct spi_driver ad_dpot_spi_driver = { .driver = { .name = "ad_dpot", - .owner = THIS_MODULE, }, .probe = ad_dpot_spi_probe, .remove = ad_dpot_spi_remove, diff --git a/drivers/misc/bmp085-spi.c b/drivers/misc/bmp085-spi.c index 864ecac32373..17ecbf95ff15 100644 --- a/drivers/misc/bmp085-spi.c +++ b/drivers/misc/bmp085-spi.c @@ -64,7 +64,6 @@ MODULE_DEVICE_TABLE(spi, bmp085_id); static struct spi_driver bmp085_spi_driver = { .driver = { - .owner = THIS_MODULE, .name = BMP085_NAME, .of_match_table = bmp085_of_match }, diff --git a/drivers/misc/eeprom/at25.c b/drivers/misc/eeprom/at25.c index 0a1af93ec638..f850ef556bcc 100644 --- a/drivers/misc/eeprom/at25.c +++ b/drivers/misc/eeprom/at25.c @@ -462,7 +462,6 @@ MODULE_DEVICE_TABLE(of, at25_of_match); static struct spi_driver at25_driver = { .driver = { .name = "at25", - .owner = THIS_MODULE, .of_match_table = at25_of_match, }, .probe = at25_probe, diff --git a/drivers/misc/eeprom/eeprom_93xx46.c b/drivers/misc/eeprom/eeprom_93xx46.c index a6bd9e3fe9d3..ff63f05edc76 100644 --- a/drivers/misc/eeprom/eeprom_93xx46.c +++ b/drivers/misc/eeprom/eeprom_93xx46.c @@ -370,7 +370,6 @@ static int eeprom_93xx46_remove(struct spi_device *spi) static struct spi_driver eeprom_93xx46_driver = { .driver = { .name = "93xx46", - .owner = THIS_MODULE, }, .probe = eeprom_93xx46_probe, .remove = eeprom_93xx46_remove, diff --git a/drivers/misc/lattice-ecp3-config.c b/drivers/misc/lattice-ecp3-config.c index c544f1f50f52..626fdcaf2510 100644 --- a/drivers/misc/lattice-ecp3-config.c +++ b/drivers/misc/lattice-ecp3-config.c @@ -235,7 +235,6 @@ MODULE_DEVICE_TABLE(spi, lattice_ecp3_id); static struct spi_driver lattice_ecp3_driver = { .driver = { .name = "lattice-ecp3", - .owner = THIS_MODULE, }, .probe = lattice_ecp3_probe, .remove = lattice_ecp3_remove, diff --git a/drivers/misc/lis3lv02d/lis3lv02d_spi.c b/drivers/misc/lis3lv02d/lis3lv02d_spi.c index b2f6e1651ac9..e575475123c8 100644 --- a/drivers/misc/lis3lv02d/lis3lv02d_spi.c +++ b/drivers/misc/lis3lv02d/lis3lv02d_spi.c @@ -138,7 +138,6 @@ static SIMPLE_DEV_PM_OPS(lis3lv02d_spi_pm, lis3lv02d_spi_suspend, static struct spi_driver lis302dl_spi_driver = { .driver = { .name = DRV_NAME, - .owner = THIS_MODULE, .pm = &lis3lv02d_spi_pm, .of_match_table = of_match_ptr(lis302dl_spi_dt_ids), }, diff --git a/drivers/misc/ti_dac7512.c b/drivers/misc/ti_dac7512.c index cb0289b44a17..f5456fb7d773 100644 --- a/drivers/misc/ti_dac7512.c +++ b/drivers/misc/ti_dac7512.c @@ -89,7 +89,6 @@ MODULE_DEVICE_TABLE(of, dac7512_of_match); static struct spi_driver dac7512_driver = { .driver = { .name = "dac7512", - .owner = THIS_MODULE, .of_match_table = of_match_ptr(dac7512_of_match), }, .probe = dac7512_probe, diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c index ae19d83bb9de..8c79831b20fb 100644 --- a/drivers/mmc/host/mmc_spi.c +++ b/drivers/mmc/host/mmc_spi.c @@ -1515,7 +1515,6 @@ static const struct of_device_id mmc_spi_of_match_table[] = { static struct spi_driver mmc_spi_driver = { .driver = { .name = "mmc_spi", - .owner = THIS_MODULE, .of_match_table = mmc_spi_of_match_table, }, .probe = mmc_spi_probe, diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index 9cd3631170ef..fcf171a1325e 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -304,7 +304,6 @@ MODULE_DEVICE_TABLE(of, m25p_of_table); static struct spi_driver m25p80_driver = { .driver = { .name = "m25p80", - .owner = THIS_MODULE, .of_match_table = m25p_of_table, }, .id_table = m25p_ids, diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c index df6f61137376..70c16399e8ba 100644 --- a/drivers/mtd/devices/mtd_dataflash.c +++ b/drivers/mtd/devices/mtd_dataflash.c @@ -911,7 +911,6 @@ static int dataflash_remove(struct spi_device *spi) static struct spi_driver dataflash_driver = { .driver = { .name = "mtd_dataflash", - .owner = THIS_MODULE, .of_match_table = of_match_ptr(dataflash_dt_ids), }, diff --git a/drivers/mtd/devices/sst25l.c b/drivers/mtd/devices/sst25l.c index c63ecbcad0b7..18febf74404d 100644 --- a/drivers/mtd/devices/sst25l.c +++ b/drivers/mtd/devices/sst25l.c @@ -417,7 +417,6 @@ static int sst25l_remove(struct spi_device *spi) static struct spi_driver sst25l_driver = { .driver = { .name = "sst25l", - .owner = THIS_MODULE, }, .probe = sst25l_probe, .remove = sst25l_remove, diff --git a/drivers/net/can/spi/mcp251x.c b/drivers/net/can/spi/mcp251x.c index b7e83c212023..575790e8a75a 100644 --- a/drivers/net/can/spi/mcp251x.c +++ b/drivers/net/can/spi/mcp251x.c @@ -1243,7 +1243,6 @@ static SIMPLE_DEV_PM_OPS(mcp251x_can_pm_ops, mcp251x_can_suspend, static struct spi_driver mcp251x_can_driver = { .driver = { .name = DEVICE_NAME, - .owner = THIS_MODULE, .of_match_table = mcp251x_of_match, .pm = &mcp251x_can_pm_ops, }, diff --git a/drivers/net/ethernet/micrel/ks8851.c b/drivers/net/ethernet/micrel/ks8851.c index 66d4ab703f45..37b466a4841d 100644 --- a/drivers/net/ethernet/micrel/ks8851.c +++ b/drivers/net/ethernet/micrel/ks8851.c @@ -1606,7 +1606,6 @@ static struct spi_driver ks8851_driver = { .driver = { .name = "ks8851", .of_match_table = ks8851_match_table, - .owner = THIS_MODULE, .pm = &ks8851_pm_ops, }, .probe = ks8851_probe, diff --git a/drivers/net/ethernet/microchip/enc28j60.c b/drivers/net/ethernet/microchip/enc28j60.c index b1b5f66b8b69..86ea17e7ba7b 100644 --- a/drivers/net/ethernet/microchip/enc28j60.c +++ b/drivers/net/ethernet/microchip/enc28j60.c @@ -1633,7 +1633,6 @@ static int enc28j60_remove(struct spi_device *spi) static struct spi_driver enc28j60_driver = { .driver = { .name = DRV_NAME, - .owner = THIS_MODULE, }, .probe = enc28j60_probe, .remove = enc28j60_remove, diff --git a/drivers/net/ethernet/qualcomm/qca_spi.c b/drivers/net/ethernet/qualcomm/qca_spi.c index 2f87909f5186..ddb2c6c6ec94 100644 --- a/drivers/net/ethernet/qualcomm/qca_spi.c +++ b/drivers/net/ethernet/qualcomm/qca_spi.c @@ -974,7 +974,6 @@ MODULE_DEVICE_TABLE(spi, qca_spi_id); static struct spi_driver qca_spi_driver = { .driver = { .name = QCASPI_DRV_NAME, - .owner = THIS_MODULE, .of_match_table = qca_spi_of_match, }, .id_table = qca_spi_id, diff --git a/drivers/net/ieee802154/at86rf230.c b/drivers/net/ieee802154/at86rf230.c index 6422caac8d40..46805ab0764f 100644 --- a/drivers/net/ieee802154/at86rf230.c +++ b/drivers/net/ieee802154/at86rf230.c @@ -1763,7 +1763,6 @@ static struct spi_driver at86rf230_driver = { .driver = { .of_match_table = of_match_ptr(at86rf230_of_match), .name = "at86rf230", - .owner = THIS_MODULE, }, .probe = at86rf230_probe, .remove = at86rf230_remove, diff --git a/drivers/net/ieee802154/cc2520.c b/drivers/net/ieee802154/cc2520.c index c5b54a15fc4c..e65b60591317 100644 --- a/drivers/net/ieee802154/cc2520.c +++ b/drivers/net/ieee802154/cc2520.c @@ -1152,7 +1152,6 @@ MODULE_DEVICE_TABLE(of, cc2520_of_ids); static struct spi_driver cc2520_driver = { .driver = { .name = "cc2520", - .owner = THIS_MODULE, .of_match_table = of_match_ptr(cc2520_of_ids), }, .id_table = cc2520_ids, diff --git a/drivers/net/ieee802154/mrf24j40.c b/drivers/net/ieee802154/mrf24j40.c index 997724b8e434..e4c37d48add1 100644 --- a/drivers/net/ieee802154/mrf24j40.c +++ b/drivers/net/ieee802154/mrf24j40.c @@ -812,7 +812,6 @@ MODULE_DEVICE_TABLE(spi, mrf24j40_ids); static struct spi_driver mrf24j40_driver = { .driver = { .name = "mrf24j40", - .owner = THIS_MODULE, }, .id_table = mrf24j40_ids, .probe = mrf24j40_probe, diff --git a/drivers/net/phy/spi_ks8995.c b/drivers/net/phy/spi_ks8995.c index f091d691cf6f..c72c42206850 100644 --- a/drivers/net/phy/spi_ks8995.c +++ b/drivers/net/phy/spi_ks8995.c @@ -343,7 +343,6 @@ static int ks8995_remove(struct spi_device *spi) static struct spi_driver ks8995_driver = { .driver = { .name = "spi-ks8995", - .owner = THIS_MODULE, }, .probe = ks8995_probe, .remove = ks8995_remove, diff --git a/drivers/net/wireless/cw1200/cw1200_spi.c b/drivers/net/wireless/cw1200/cw1200_spi.c index 29185aeccba8..a740083634d8 100644 --- a/drivers/net/wireless/cw1200/cw1200_spi.c +++ b/drivers/net/wireless/cw1200/cw1200_spi.c @@ -467,7 +467,6 @@ static struct spi_driver spi_driver = { .remove = cw1200_spi_disconnect, .driver = { .name = "cw1200_wlan_spi", - .owner = THIS_MODULE, #ifdef CONFIG_PM .pm = &cw1200_pm_ops, #endif diff --git a/drivers/net/wireless/libertas/if_spi.c b/drivers/net/wireless/libertas/if_spi.c index f11728a866ff..82c0796377aa 100644 --- a/drivers/net/wireless/libertas/if_spi.c +++ b/drivers/net/wireless/libertas/if_spi.c @@ -1283,7 +1283,6 @@ static struct spi_driver libertas_spi_driver = { .remove = libertas_spi_remove, .driver = { .name = "libertas_spi", - .owner = THIS_MODULE, .pm = &if_spi_pm_ops, }, }; diff --git a/drivers/net/wireless/p54/p54spi.c b/drivers/net/wireless/p54/p54spi.c index 63de5eed25cf..7ab2f43ab425 100644 --- a/drivers/net/wireless/p54/p54spi.c +++ b/drivers/net/wireless/p54/p54spi.c @@ -705,7 +705,6 @@ static int p54spi_remove(struct spi_device *spi) static struct spi_driver p54spi_driver = { .driver = { .name = "p54spi", - .owner = THIS_MODULE, }, .probe = p54spi_probe, diff --git a/drivers/net/wireless/ti/wl1251/spi.c b/drivers/net/wireless/ti/wl1251/spi.c index 735be5352143..8de9d4444a6a 100644 --- a/drivers/net/wireless/ti/wl1251/spi.c +++ b/drivers/net/wireless/ti/wl1251/spi.c @@ -354,7 +354,6 @@ static int wl1251_spi_remove(struct spi_device *spi) static struct spi_driver wl1251_spi_driver = { .driver = { .name = DRIVER_NAME, - .owner = THIS_MODULE, }, .probe = wl1251_spi_probe, diff --git a/drivers/net/wireless/ti/wlcore/spi.c b/drivers/net/wireless/ti/wlcore/spi.c index f1ac2839d97c..236b41090827 100644 --- a/drivers/net/wireless/ti/wlcore/spi.c +++ b/drivers/net/wireless/ti/wlcore/spi.c @@ -408,7 +408,6 @@ static int wl1271_remove(struct spi_device *spi) static struct spi_driver wl1271_spi_driver = { .driver = { .name = "wl1271_spi", - .owner = THIS_MODULE, }, .probe = wl1271_probe, diff --git a/drivers/nfc/st-nci/spi.c b/drivers/nfc/st-nci/spi.c index 598a58c4d6d1..2bb5851eef41 100644 --- a/drivers/nfc/st-nci/spi.c +++ b/drivers/nfc/st-nci/spi.c @@ -377,7 +377,6 @@ MODULE_DEVICE_TABLE(of, of_st_nci_spi_match); static struct spi_driver st_nci_spi_driver = { .driver = { - .owner = THIS_MODULE, .name = ST_NCI_SPI_DRIVER_NAME, .of_match_table = of_match_ptr(of_st_nci_spi_match), }, diff --git a/drivers/nfc/trf7970a.c b/drivers/nfc/trf7970a.c index 70b0707fd9a9..4036788c78b6 100644 --- a/drivers/nfc/trf7970a.c +++ b/drivers/nfc/trf7970a.c @@ -2223,7 +2223,6 @@ static struct spi_driver trf7970a_spi_driver = { .id_table = trf7970a_id_table, .driver = { .name = "trf7970a", - .owner = THIS_MODULE, .pm = &trf7970a_pm_ops, }, }; diff --git a/drivers/regulator/tps6524x-regulator.c b/drivers/regulator/tps6524x-regulator.c index 5b494db9f95c..9d6ea3a4dccd 100644 --- a/drivers/regulator/tps6524x-regulator.c +++ b/drivers/regulator/tps6524x-regulator.c @@ -629,7 +629,6 @@ static struct spi_driver pmic_driver = { .probe = pmic_probe, .driver = { .name = "tps6524x", - .owner = THIS_MODULE, }, }; diff --git a/drivers/rtc/rtc-ds1305.c b/drivers/rtc/rtc-ds1305.c index baa5d047f9c8..85706a9f82c9 100644 --- a/drivers/rtc/rtc-ds1305.c +++ b/drivers/rtc/rtc-ds1305.c @@ -772,7 +772,6 @@ static int ds1305_remove(struct spi_device *spi) static struct spi_driver ds1305_driver = { .driver.name = "rtc-ds1305", - .driver.owner = THIS_MODULE, .probe = ds1305_probe, .remove = ds1305_remove, /* REVISIT add suspend/resume */ diff --git a/drivers/rtc/rtc-ds1343.c b/drivers/rtc/rtc-ds1343.c index 79a06dd3c185..07371a9e3793 100644 --- a/drivers/rtc/rtc-ds1343.c +++ b/drivers/rtc/rtc-ds1343.c @@ -731,7 +731,6 @@ static SIMPLE_DEV_PM_OPS(ds1343_pm, ds1343_suspend, ds1343_resume); static struct spi_driver ds1343_driver = { .driver = { .name = "ds1343", - .owner = THIS_MODULE, .pm = &ds1343_pm, }, .probe = ds1343_probe, diff --git a/drivers/rtc/rtc-ds1347.c b/drivers/rtc/rtc-ds1347.c index c82b4c050326..641e8e8a0dd7 100644 --- a/drivers/rtc/rtc-ds1347.c +++ b/drivers/rtc/rtc-ds1347.c @@ -154,7 +154,6 @@ static int ds1347_probe(struct spi_device *spi) static struct spi_driver ds1347_driver = { .driver = { .name = "ds1347", - .owner = THIS_MODULE, }, .probe = ds1347_probe, }; diff --git a/drivers/rtc/rtc-ds1390.c b/drivers/rtc/rtc-ds1390.c index e67bfcb3a1aa..4c229c97ef97 100644 --- a/drivers/rtc/rtc-ds1390.c +++ b/drivers/rtc/rtc-ds1390.c @@ -156,7 +156,6 @@ static int ds1390_probe(struct spi_device *spi) static struct spi_driver ds1390_driver = { .driver = { .name = "rtc-ds1390", - .owner = THIS_MODULE, }, .probe = ds1390_probe, }; diff --git a/drivers/rtc/rtc-ds3234.c b/drivers/rtc/rtc-ds3234.c index 4c9ba5368464..570ab28fc354 100644 --- a/drivers/rtc/rtc-ds3234.c +++ b/drivers/rtc/rtc-ds3234.c @@ -159,7 +159,6 @@ static int ds3234_probe(struct spi_device *spi) static struct spi_driver ds3234_driver = { .driver = { .name = "ds3234", - .owner = THIS_MODULE, }, .probe = ds3234_probe, }; diff --git a/drivers/rtc/rtc-m41t93.c b/drivers/rtc/rtc-m41t93.c index 4698c7e344e4..5ac45fc1a787 100644 --- a/drivers/rtc/rtc-m41t93.c +++ b/drivers/rtc/rtc-m41t93.c @@ -197,7 +197,6 @@ static int m41t93_probe(struct spi_device *spi) static struct spi_driver m41t93_driver = { .driver = { .name = "rtc-m41t93", - .owner = THIS_MODULE, }, .probe = m41t93_probe, }; diff --git a/drivers/rtc/rtc-m41t94.c b/drivers/rtc/rtc-m41t94.c index 8d800b1bf87b..1f0eb79e69f9 100644 --- a/drivers/rtc/rtc-m41t94.c +++ b/drivers/rtc/rtc-m41t94.c @@ -137,7 +137,6 @@ static int m41t94_probe(struct spi_device *spi) static struct spi_driver m41t94_driver = { .driver = { .name = "rtc-m41t94", - .owner = THIS_MODULE, }, .probe = m41t94_probe, }; diff --git a/drivers/rtc/rtc-max6902.c b/drivers/rtc/rtc-max6902.c index ac3f4191864f..315d09e0f2c1 100644 --- a/drivers/rtc/rtc-max6902.c +++ b/drivers/rtc/rtc-max6902.c @@ -146,7 +146,6 @@ static int max6902_probe(struct spi_device *spi) static struct spi_driver max6902_driver = { .driver = { .name = "rtc-max6902", - .owner = THIS_MODULE, }, .probe = max6902_probe, }; diff --git a/drivers/rtc/rtc-mcp795.c b/drivers/rtc/rtc-mcp795.c index 34295bf00416..1c91ce8a6d75 100644 --- a/drivers/rtc/rtc-mcp795.c +++ b/drivers/rtc/rtc-mcp795.c @@ -186,7 +186,6 @@ static int mcp795_probe(struct spi_device *spi) static struct spi_driver mcp795_driver = { .driver = { .name = "rtc-mcp795", - .owner = THIS_MODULE, }, .probe = mcp795_probe, }; diff --git a/drivers/rtc/rtc-pcf2123.c b/drivers/rtc/rtc-pcf2123.c index 1c47650fe624..ea8a31c91641 100644 --- a/drivers/rtc/rtc-pcf2123.c +++ b/drivers/rtc/rtc-pcf2123.c @@ -346,7 +346,6 @@ MODULE_DEVICE_TABLE(of, pcf2123_dt_ids); static struct spi_driver pcf2123_driver = { .driver = { .name = "rtc-pcf2123", - .owner = THIS_MODULE, .of_match_table = of_match_ptr(pcf2123_dt_ids), }, .probe = pcf2123_probe, diff --git a/drivers/rtc/rtc-r9701.c b/drivers/rtc/rtc-r9701.c index feeedbd82000..83d2bcca6a8f 100644 --- a/drivers/rtc/rtc-r9701.c +++ b/drivers/rtc/rtc-r9701.c @@ -172,7 +172,6 @@ static int r9701_remove(struct spi_device *spi) static struct spi_driver r9701_driver = { .driver = { .name = "rtc-r9701", - .owner = THIS_MODULE, }, .probe = r9701_probe, .remove = r9701_remove, diff --git a/drivers/rtc/rtc-rs5c348.c b/drivers/rtc/rtc-rs5c348.c index 090a101c1c81..1162fecab8cf 100644 --- a/drivers/rtc/rtc-rs5c348.c +++ b/drivers/rtc/rtc-rs5c348.c @@ -221,7 +221,6 @@ static int rs5c348_probe(struct spi_device *spi) static struct spi_driver rs5c348_driver = { .driver = { .name = "rtc-rs5c348", - .owner = THIS_MODULE, }, .probe = rs5c348_probe, }; diff --git a/drivers/rtc/rtc-rx4581.c b/drivers/rtc/rtc-rx4581.c index 6889222f9ed6..de3fe4f8d133 100644 --- a/drivers/rtc/rtc-rx4581.c +++ b/drivers/rtc/rtc-rx4581.c @@ -291,7 +291,6 @@ MODULE_DEVICE_TABLE(spi, rx4581_id); static struct spi_driver rx4581_driver = { .driver = { .name = "rtc-rx4581", - .owner = THIS_MODULE, }, .probe = rx4581_probe, .id_table = rx4581_id, diff --git a/drivers/spi/spi-tle62x0.c b/drivers/spi/spi-tle62x0.c index daf5aa1c24c3..c6ae775289e5 100644 --- a/drivers/spi/spi-tle62x0.c +++ b/drivers/spi/spi-tle62x0.c @@ -307,7 +307,6 @@ static int tle62x0_remove(struct spi_device *spi) static struct spi_driver tle62x0_driver = { .driver = { .name = "tle62x0", - .owner = THIS_MODULE, }, .probe = tle62x0_probe, .remove = tle62x0_remove, diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c index fba92a526531..84622418ceda 100644 --- a/drivers/spi/spidev.c +++ b/drivers/spi/spidev.c @@ -787,7 +787,6 @@ static int spidev_remove(struct spi_device *spi) static struct spi_driver spidev_spi_driver = { .driver = { .name = "spidev", - .owner = THIS_MODULE, .of_match_table = of_match_ptr(spidev_dt_ids), }, .probe = spidev_probe, diff --git a/drivers/staging/fbtft/fbtft.h b/drivers/staging/fbtft/fbtft.h index 7e9a506d65f9..0d27daf23228 100644 --- a/drivers/staging/fbtft/fbtft.h +++ b/drivers/staging/fbtft/fbtft.h @@ -333,7 +333,6 @@ MODULE_DEVICE_TABLE(of, dt_ids); \ static struct spi_driver fbtft_driver_spi_driver = { \ .driver = { \ .name = _name, \ - .owner = THIS_MODULE, \ .of_match_table = of_match_ptr(dt_ids), \ }, \ .probe = fbtft_driver_probe_spi, \ diff --git a/drivers/staging/fbtft/flexfb.c b/drivers/staging/fbtft/flexfb.c index c763efc5de7d..17e031fc2b4f 100644 --- a/drivers/staging/fbtft/flexfb.c +++ b/drivers/staging/fbtft/flexfb.c @@ -586,7 +586,6 @@ static int flexfb_remove_pdev(struct platform_device *pdev) static struct spi_driver flexfb_spi_driver = { .driver = { .name = DRVNAME, - .owner = THIS_MODULE, }, .probe = flexfb_probe_spi, .remove = flexfb_remove_spi, diff --git a/drivers/staging/iio/accel/adis16201_core.c b/drivers/staging/iio/accel/adis16201_core.c index 10db685813c9..06c0b75ed26a 100644 --- a/drivers/staging/iio/accel/adis16201_core.c +++ b/drivers/staging/iio/accel/adis16201_core.c @@ -235,7 +235,6 @@ static int adis16201_remove(struct spi_device *spi) static struct spi_driver adis16201_driver = { .driver = { .name = "adis16201", - .owner = THIS_MODULE, }, .probe = adis16201_probe, .remove = adis16201_remove, diff --git a/drivers/staging/iio/accel/adis16203_core.c b/drivers/staging/iio/accel/adis16203_core.c index fb593d23d5bc..de5b84ac842b 100644 --- a/drivers/staging/iio/accel/adis16203_core.c +++ b/drivers/staging/iio/accel/adis16203_core.c @@ -203,7 +203,6 @@ static int adis16203_remove(struct spi_device *spi) static struct spi_driver adis16203_driver = { .driver = { .name = "adis16203", - .owner = THIS_MODULE, }, .probe = adis16203_probe, .remove = adis16203_remove, diff --git a/drivers/staging/iio/accel/adis16204_core.c b/drivers/staging/iio/accel/adis16204_core.c index ea0ac2467ac2..20a9df64f1ed 100644 --- a/drivers/staging/iio/accel/adis16204_core.c +++ b/drivers/staging/iio/accel/adis16204_core.c @@ -241,7 +241,6 @@ static int adis16204_remove(struct spi_device *spi) static struct spi_driver adis16204_driver = { .driver = { .name = "adis16204", - .owner = THIS_MODULE, }, .probe = adis16204_probe, .remove = adis16204_remove, diff --git a/drivers/staging/iio/accel/adis16209_core.c b/drivers/staging/iio/accel/adis16209_core.c index d1dc1a3cb3ce..8b42bf8c3f60 100644 --- a/drivers/staging/iio/accel/adis16209_core.c +++ b/drivers/staging/iio/accel/adis16209_core.c @@ -235,7 +235,6 @@ static int adis16209_remove(struct spi_device *spi) static struct spi_driver adis16209_driver = { .driver = { .name = "adis16209", - .owner = THIS_MODULE, }, .probe = adis16209_probe, .remove = adis16209_remove, diff --git a/drivers/staging/iio/accel/adis16220_core.c b/drivers/staging/iio/accel/adis16220_core.c index e46a91c69a31..d0165218b60c 100644 --- a/drivers/staging/iio/accel/adis16220_core.c +++ b/drivers/staging/iio/accel/adis16220_core.c @@ -482,7 +482,6 @@ static int adis16220_remove(struct spi_device *spi) static struct spi_driver adis16220_driver = { .driver = { .name = "adis16220", - .owner = THIS_MODULE, }, .probe = adis16220_probe, .remove = adis16220_remove, diff --git a/drivers/staging/iio/accel/adis16240_core.c b/drivers/staging/iio/accel/adis16240_core.c index cb074e864408..1b5b685a8691 100644 --- a/drivers/staging/iio/accel/adis16240_core.c +++ b/drivers/staging/iio/accel/adis16240_core.c @@ -288,7 +288,6 @@ static int adis16240_remove(struct spi_device *spi) static struct spi_driver adis16240_driver = { .driver = { .name = "adis16240", - .owner = THIS_MODULE, }, .probe = adis16240_probe, .remove = adis16240_remove, diff --git a/drivers/staging/iio/accel/lis3l02dq_core.c b/drivers/staging/iio/accel/lis3l02dq_core.c index ebcab56c81b9..24d90b35d669 100644 --- a/drivers/staging/iio/accel/lis3l02dq_core.c +++ b/drivers/staging/iio/accel/lis3l02dq_core.c @@ -800,7 +800,6 @@ static int lis3l02dq_remove(struct spi_device *spi) static struct spi_driver lis3l02dq_driver = { .driver = { .name = "lis3l02dq", - .owner = THIS_MODULE, }, .probe = lis3l02dq_probe, .remove = lis3l02dq_remove, diff --git a/drivers/staging/iio/accel/sca3000_core.c b/drivers/staging/iio/accel/sca3000_core.c index b614f272b5f4..fda646246215 100644 --- a/drivers/staging/iio/accel/sca3000_core.c +++ b/drivers/staging/iio/accel/sca3000_core.c @@ -1196,7 +1196,6 @@ MODULE_DEVICE_TABLE(spi, sca3000_id); static struct spi_driver sca3000_driver = { .driver = { .name = "sca3000", - .owner = THIS_MODULE, }, .probe = sca3000_probe, .remove = sca3000_remove, diff --git a/drivers/staging/iio/adc/ad7192.c b/drivers/staging/iio/adc/ad7192.c index fe56fb6c7d30..a3b76559a4f0 100644 --- a/drivers/staging/iio/adc/ad7192.c +++ b/drivers/staging/iio/adc/ad7192.c @@ -707,7 +707,6 @@ MODULE_DEVICE_TABLE(spi, ad7192_id); static struct spi_driver ad7192_driver = { .driver = { .name = "ad7192", - .owner = THIS_MODULE, }, .probe = ad7192_probe, .remove = ad7192_remove, diff --git a/drivers/staging/iio/adc/ad7280a.c b/drivers/staging/iio/adc/ad7280a.c index d98e229c46bf..8a7c8737adc4 100644 --- a/drivers/staging/iio/adc/ad7280a.c +++ b/drivers/staging/iio/adc/ad7280a.c @@ -972,7 +972,6 @@ MODULE_DEVICE_TABLE(spi, ad7280_id); static struct spi_driver ad7280_driver = { .driver = { .name = "ad7280", - .owner = THIS_MODULE, }, .probe = ad7280_probe, .remove = ad7280_remove, diff --git a/drivers/staging/iio/adc/ad7606_spi.c b/drivers/staging/iio/adc/ad7606_spi.c index 7303983e64a7..06b59cbca443 100644 --- a/drivers/staging/iio/adc/ad7606_spi.c +++ b/drivers/staging/iio/adc/ad7606_spi.c @@ -102,7 +102,6 @@ MODULE_DEVICE_TABLE(spi, ad7606_id); static struct spi_driver ad7606_driver = { .driver = { .name = "ad7606", - .owner = THIS_MODULE, .pm = AD7606_SPI_PM_OPS, }, .probe = ad7606_spi_probe, diff --git a/drivers/staging/iio/adc/ad7780.c b/drivers/staging/iio/adc/ad7780.c index 9f03fe3ee3d9..b76dd15427f5 100644 --- a/drivers/staging/iio/adc/ad7780.c +++ b/drivers/staging/iio/adc/ad7780.c @@ -263,7 +263,6 @@ MODULE_DEVICE_TABLE(spi, ad7780_id); static struct spi_driver ad7780_driver = { .driver = { .name = "ad7780", - .owner = THIS_MODULE, }, .probe = ad7780_probe, .remove = ad7780_remove, diff --git a/drivers/staging/iio/adc/ad7816.c b/drivers/staging/iio/adc/ad7816.c index 48b1c3740030..f3bbb38cdbe4 100644 --- a/drivers/staging/iio/adc/ad7816.c +++ b/drivers/staging/iio/adc/ad7816.c @@ -434,7 +434,6 @@ MODULE_DEVICE_TABLE(spi, ad7816_id); static struct spi_driver ad7816_driver = { .driver = { .name = "ad7816", - .owner = THIS_MODULE, }, .probe = ad7816_probe, .id_table = ad7816_id, diff --git a/drivers/staging/iio/addac/adt7316-spi.c b/drivers/staging/iio/addac/adt7316-spi.c index e480abb72e4a..5cd22743e140 100644 --- a/drivers/staging/iio/addac/adt7316-spi.c +++ b/drivers/staging/iio/addac/adt7316-spi.c @@ -132,7 +132,6 @@ static struct spi_driver adt7316_driver = { .driver = { .name = "adt7316", .pm = ADT7316_PM_OPS, - .owner = THIS_MODULE, }, .probe = adt7316_spi_probe, .id_table = adt7316_spi_id, diff --git a/drivers/staging/iio/frequency/ad9832.c b/drivers/staging/iio/frequency/ad9832.c index a861fe0149b1..2b65faa6296a 100644 --- a/drivers/staging/iio/frequency/ad9832.c +++ b/drivers/staging/iio/frequency/ad9832.c @@ -339,7 +339,6 @@ MODULE_DEVICE_TABLE(spi, ad9832_id); static struct spi_driver ad9832_driver = { .driver = { .name = "ad9832", - .owner = THIS_MODULE, }, .probe = ad9832_probe, .remove = ad9832_remove, diff --git a/drivers/staging/iio/frequency/ad9834.c b/drivers/staging/iio/frequency/ad9834.c index d02bb44fb8fc..15f0cc3b4d31 100644 --- a/drivers/staging/iio/frequency/ad9834.c +++ b/drivers/staging/iio/frequency/ad9834.c @@ -446,7 +446,6 @@ MODULE_DEVICE_TABLE(spi, ad9834_id); static struct spi_driver ad9834_driver = { .driver = { .name = "ad9834", - .owner = THIS_MODULE, }, .probe = ad9834_probe, .remove = ad9834_remove, diff --git a/drivers/staging/iio/gyro/adis16060_core.c b/drivers/staging/iio/gyro/adis16060_core.c index 4c5869dd8223..b8776d638e66 100644 --- a/drivers/staging/iio/gyro/adis16060_core.c +++ b/drivers/staging/iio/gyro/adis16060_core.c @@ -202,7 +202,6 @@ static int adis16060_w_remove(struct spi_device *spi) static struct spi_driver adis16060_r_driver = { .driver = { .name = "adis16060_r", - .owner = THIS_MODULE, }, .probe = adis16060_r_probe, }; @@ -210,7 +209,6 @@ static struct spi_driver adis16060_r_driver = { static struct spi_driver adis16060_w_driver = { .driver = { .name = "adis16060_w", - .owner = THIS_MODULE, }, .probe = adis16060_w_probe, .remove = adis16060_w_remove, diff --git a/drivers/staging/iio/magnetometer/hmc5843_spi.c b/drivers/staging/iio/magnetometer/hmc5843_spi.c index 8e658f736e1f..070c918dadcf 100644 --- a/drivers/staging/iio/magnetometer/hmc5843_spi.c +++ b/drivers/staging/iio/magnetometer/hmc5843_spi.c @@ -86,7 +86,6 @@ static struct spi_driver hmc5843_driver = { .driver = { .name = "hmc5843", .pm = HMC5843_PM_OPS, - .owner = THIS_MODULE, }, .id_table = hmc5843_id, .probe = hmc5843_spi_probe, diff --git a/drivers/staging/iio/meter/ade7753.c b/drivers/staging/iio/meter/ade7753.c index ffc7f0ddff14..9ca9fef4b8ba 100644 --- a/drivers/staging/iio/meter/ade7753.c +++ b/drivers/staging/iio/meter/ade7753.c @@ -534,7 +534,6 @@ static int ade7753_remove(struct spi_device *spi) static struct spi_driver ade7753_driver = { .driver = { .name = "ade7753", - .owner = THIS_MODULE, }, .probe = ade7753_probe, .remove = ade7753_remove, diff --git a/drivers/staging/iio/meter/ade7754.c b/drivers/staging/iio/meter/ade7754.c index f12b2e50329b..5609872532f1 100644 --- a/drivers/staging/iio/meter/ade7754.c +++ b/drivers/staging/iio/meter/ade7754.c @@ -575,7 +575,6 @@ static int ade7754_remove(struct spi_device *spi) static struct spi_driver ade7754_driver = { .driver = { .name = "ade7754", - .owner = THIS_MODULE, }, .probe = ade7754_probe, .remove = ade7754_remove, diff --git a/drivers/staging/iio/meter/ade7758_core.c b/drivers/staging/iio/meter/ade7758_core.c index 77141ae1349d..d348e161c848 100644 --- a/drivers/staging/iio/meter/ade7758_core.c +++ b/drivers/staging/iio/meter/ade7758_core.c @@ -904,7 +904,6 @@ MODULE_DEVICE_TABLE(spi, ade7758_id); static struct spi_driver ade7758_driver = { .driver = { .name = "ade7758", - .owner = THIS_MODULE, }, .probe = ade7758_probe, .remove = ade7758_remove, diff --git a/drivers/staging/iio/meter/ade7759.c b/drivers/staging/iio/meter/ade7759.c index dbceda1e67ea..f774a62cad4e 100644 --- a/drivers/staging/iio/meter/ade7759.c +++ b/drivers/staging/iio/meter/ade7759.c @@ -490,7 +490,6 @@ static int ade7759_remove(struct spi_device *spi) static struct spi_driver ade7759_driver = { .driver = { .name = "ade7759", - .owner = THIS_MODULE, }, .probe = ade7759_probe, .remove = ade7759_remove, diff --git a/drivers/staging/iio/meter/ade7854-spi.c b/drivers/staging/iio/meter/ade7854-spi.c index 9b255a5f62c3..16f288d8b8f6 100644 --- a/drivers/staging/iio/meter/ade7854-spi.c +++ b/drivers/staging/iio/meter/ade7854-spi.c @@ -314,7 +314,6 @@ MODULE_DEVICE_TABLE(spi, ade7854_id); static struct spi_driver ade7854_driver = { .driver = { .name = "ade7854", - .owner = THIS_MODULE, }, .probe = ade7854_spi_probe, .remove = ade7854_spi_remove, diff --git a/drivers/staging/iio/resolver/ad2s1200.c b/drivers/staging/iio/resolver/ad2s1200.c index c17893b4918c..595e711d35a6 100644 --- a/drivers/staging/iio/resolver/ad2s1200.c +++ b/drivers/staging/iio/resolver/ad2s1200.c @@ -155,7 +155,6 @@ MODULE_DEVICE_TABLE(spi, ad2s1200_id); static struct spi_driver ad2s1200_driver = { .driver = { .name = DRV_NAME, - .owner = THIS_MODULE, }, .probe = ad2s1200_probe, .id_table = ad2s1200_id, diff --git a/drivers/staging/iio/resolver/ad2s1210.c b/drivers/staging/iio/resolver/ad2s1210.c index 7bc3e4a73834..95f5426a14d9 100644 --- a/drivers/staging/iio/resolver/ad2s1210.c +++ b/drivers/staging/iio/resolver/ad2s1210.c @@ -735,7 +735,6 @@ MODULE_DEVICE_TABLE(spi, ad2s1210_id); static struct spi_driver ad2s1210_driver = { .driver = { .name = DRV_NAME, - .owner = THIS_MODULE, }, .probe = ad2s1210_probe, .remove = ad2s1210_remove, diff --git a/drivers/staging/iio/resolver/ad2s90.c b/drivers/staging/iio/resolver/ad2s90.c index e24c5890652f..cfeedfb7c774 100644 --- a/drivers/staging/iio/resolver/ad2s90.c +++ b/drivers/staging/iio/resolver/ad2s90.c @@ -107,7 +107,6 @@ MODULE_DEVICE_TABLE(spi, ad2s90_id); static struct spi_driver ad2s90_driver = { .driver = { .name = "ad2s90", - .owner = THIS_MODULE, }, .probe = ad2s90_probe, .remove = ad2s90_remove, diff --git a/drivers/staging/mt29f_spinand/mt29f_spinand.c b/drivers/staging/mt29f_spinand/mt29f_spinand.c index ad30ce4206ef..5a0e77305827 100644 --- a/drivers/staging/mt29f_spinand/mt29f_spinand.c +++ b/drivers/staging/mt29f_spinand/mt29f_spinand.c @@ -948,7 +948,6 @@ static const struct of_device_id spinand_dt[] = { static struct spi_driver spinand_driver = { .driver = { .name = "mt29f", - .owner = THIS_MODULE, .of_match_table = spinand_dt, }, .probe = spinand_probe, diff --git a/drivers/tty/serial/ifx6x60.c b/drivers/tty/serial/ifx6x60.c index 536a33b99be9..88246f7e435a 100644 --- a/drivers/tty/serial/ifx6x60.c +++ b/drivers/tty/serial/ifx6x60.c @@ -1362,7 +1362,7 @@ static struct spi_driver ifx_spi_driver = { .driver = { .name = DRVNAME, .pm = &ifx_spi_pm, - .owner = THIS_MODULE}, + }, .probe = ifx_spi_spi_probe, .shutdown = ifx_spi_spi_shutdown, .remove = ifx_spi_spi_remove, diff --git a/drivers/tty/serial/max3100.c b/drivers/tty/serial/max3100.c index 077377259a2c..5c4c280b3207 100644 --- a/drivers/tty/serial/max3100.c +++ b/drivers/tty/serial/max3100.c @@ -904,7 +904,6 @@ static SIMPLE_DEV_PM_OPS(max3100_pm_ops, max3100_suspend, max3100_resume); static struct spi_driver max3100_driver = { .driver = { .name = "max3100", - .owner = THIS_MODULE, .pm = MAX3100_PM_OPS, }, .probe = max3100_probe, diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c index 182549f55904..d45133056f51 100644 --- a/drivers/tty/serial/max310x.c +++ b/drivers/tty/serial/max310x.c @@ -1338,7 +1338,6 @@ MODULE_DEVICE_TABLE(spi, max310x_id_table); static struct spi_driver max310x_uart_driver = { .driver = { .name = MAX310X_NAME, - .owner = THIS_MODULE, .of_match_table = of_match_ptr(max310x_dt_ids), .pm = &max310x_pm_ops, }, diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c index 72ffd0dcab78..55b61d79e757 100644 --- a/drivers/tty/serial/sc16is7xx.c +++ b/drivers/tty/serial/sc16is7xx.c @@ -1357,7 +1357,6 @@ MODULE_DEVICE_TABLE(spi, sc16is7xx_spi_id_table); static struct spi_driver sc16is7xx_spi_uart_driver = { .driver = { .name = SC16IS7XX_NAME, - .owner = THIS_MODULE, .of_match_table = of_match_ptr(sc16is7xx_dt_ids), }, .probe = sc16is7xx_spi_probe, diff --git a/drivers/usb/host/max3421-hcd.c b/drivers/usb/host/max3421-hcd.c index fc1fd403973a..bd98706d1ce9 100644 --- a/drivers/usb/host/max3421-hcd.c +++ b/drivers/usb/host/max3421-hcd.c @@ -1944,7 +1944,6 @@ static struct spi_driver max3421_driver = { .remove = max3421_remove, .driver = { .name = "max3421-hcd", - .owner = THIS_MODULE, }, }; diff --git a/drivers/video/backlight/ams369fg06.c b/drivers/video/backlight/ams369fg06.c index 5f897f99cc9b..5cca8ce45d4d 100644 --- a/drivers/video/backlight/ams369fg06.c +++ b/drivers/video/backlight/ams369fg06.c @@ -556,7 +556,6 @@ static void ams369fg06_shutdown(struct spi_device *spi) static struct spi_driver ams369fg06_driver = { .driver = { .name = "ams369fg06", - .owner = THIS_MODULE, .pm = &ams369fg06_pm_ops, }, .probe = ams369fg06_probe, diff --git a/drivers/video/backlight/corgi_lcd.c b/drivers/video/backlight/corgi_lcd.c index d7c37a8ccd1f..d7c239ea3d09 100644 --- a/drivers/video/backlight/corgi_lcd.c +++ b/drivers/video/backlight/corgi_lcd.c @@ -598,7 +598,6 @@ static int corgi_lcd_remove(struct spi_device *spi) static struct spi_driver corgi_lcd_driver = { .driver = { .name = "corgi-lcd", - .owner = THIS_MODULE, .pm = &corgi_lcd_pm_ops, }, .probe = corgi_lcd_probe, diff --git a/drivers/video/backlight/ili922x.c b/drivers/video/backlight/ili922x.c index e7f0890cc211..a9e9cef20ed6 100644 --- a/drivers/video/backlight/ili922x.c +++ b/drivers/video/backlight/ili922x.c @@ -536,7 +536,6 @@ static int ili922x_remove(struct spi_device *spi) static struct spi_driver ili922x_driver = { .driver = { .name = "ili922x", - .owner = THIS_MODULE, }, .probe = ili922x_probe, .remove = ili922x_remove, diff --git a/drivers/video/backlight/l4f00242t03.c b/drivers/video/backlight/l4f00242t03.c index 5fa2649c9631..e6054e2492c5 100644 --- a/drivers/video/backlight/l4f00242t03.c +++ b/drivers/video/backlight/l4f00242t03.c @@ -255,7 +255,6 @@ static void l4f00242t03_shutdown(struct spi_device *spi) static struct spi_driver l4f00242t03_driver = { .driver = { .name = "l4f00242t03", - .owner = THIS_MODULE, }, .probe = l4f00242t03_probe, .remove = l4f00242t03_remove, diff --git a/drivers/video/backlight/ld9040.c b/drivers/video/backlight/ld9040.c index f71eaf10c4eb..677f8abba27c 100644 --- a/drivers/video/backlight/ld9040.c +++ b/drivers/video/backlight/ld9040.c @@ -797,7 +797,6 @@ static void ld9040_shutdown(struct spi_device *spi) static struct spi_driver ld9040_driver = { .driver = { .name = "ld9040", - .owner = THIS_MODULE, .pm = &ld9040_pm_ops, }, .probe = ld9040_probe, diff --git a/drivers/video/backlight/lms283gf05.c b/drivers/video/backlight/lms283gf05.c index 14590c54aedf..4237aaa7f269 100644 --- a/drivers/video/backlight/lms283gf05.c +++ b/drivers/video/backlight/lms283gf05.c @@ -192,7 +192,6 @@ static int lms283gf05_probe(struct spi_device *spi) static struct spi_driver lms283gf05_driver = { .driver = { .name = "lms283gf05", - .owner = THIS_MODULE, }, .probe = lms283gf05_probe, }; diff --git a/drivers/video/backlight/lms501kf03.c b/drivers/video/backlight/lms501kf03.c index 7e3810308c3e..8aa3e7662496 100644 --- a/drivers/video/backlight/lms501kf03.c +++ b/drivers/video/backlight/lms501kf03.c @@ -422,7 +422,6 @@ static void lms501kf03_shutdown(struct spi_device *spi) static struct spi_driver lms501kf03_driver = { .driver = { .name = "lms501kf03", - .owner = THIS_MODULE, .pm = &lms501kf03_pm_ops, }, .probe = lms501kf03_probe, diff --git a/drivers/video/backlight/ltv350qv.c b/drivers/video/backlight/ltv350qv.c index 383f550e165e..885612cc1008 100644 --- a/drivers/video/backlight/ltv350qv.c +++ b/drivers/video/backlight/ltv350qv.c @@ -295,7 +295,6 @@ static void ltv350qv_shutdown(struct spi_device *spi) static struct spi_driver ltv350qv_driver = { .driver = { .name = "ltv350qv", - .owner = THIS_MODULE, .pm = <v350qv_pm_ops, }, diff --git a/drivers/video/backlight/s6e63m0.c b/drivers/video/backlight/s6e63m0.c index 28bfa127fee4..3c4a22a3063a 100644 --- a/drivers/video/backlight/s6e63m0.c +++ b/drivers/video/backlight/s6e63m0.c @@ -842,7 +842,6 @@ static void s6e63m0_shutdown(struct spi_device *spi) static struct spi_driver s6e63m0_driver = { .driver = { .name = "s6e63m0", - .owner = THIS_MODULE, .pm = &s6e63m0_pm_ops, }, .probe = s6e63m0_probe, diff --git a/drivers/video/backlight/tdo24m.c b/drivers/video/backlight/tdo24m.c index 30afce33ef2a..eab1f842f9c0 100644 --- a/drivers/video/backlight/tdo24m.c +++ b/drivers/video/backlight/tdo24m.c @@ -437,7 +437,6 @@ static void tdo24m_shutdown(struct spi_device *spi) static struct spi_driver tdo24m_driver = { .driver = { .name = "tdo24m", - .owner = THIS_MODULE, .pm = &tdo24m_pm_ops, }, .probe = tdo24m_probe, diff --git a/drivers/video/backlight/tosa_lcd.c b/drivers/video/backlight/tosa_lcd.c index f08d641ccd01..6a41ea92737a 100644 --- a/drivers/video/backlight/tosa_lcd.c +++ b/drivers/video/backlight/tosa_lcd.c @@ -263,7 +263,6 @@ static SIMPLE_DEV_PM_OPS(tosa_lcd_pm_ops, tosa_lcd_suspend, tosa_lcd_resume); static struct spi_driver tosa_lcd_driver = { .driver = { .name = "tosa-lcd", - .owner = THIS_MODULE, .pm = &tosa_lcd_pm_ops, }, .probe = tosa_lcd_probe, diff --git a/drivers/video/backlight/vgg2432a4.c b/drivers/video/backlight/vgg2432a4.c index d538947a67d3..242a9948f57f 100644 --- a/drivers/video/backlight/vgg2432a4.c +++ b/drivers/video/backlight/vgg2432a4.c @@ -251,7 +251,6 @@ static SIMPLE_DEV_PM_OPS(vgg2432a4_pm_ops, vgg2432a4_suspend, vgg2432a4_resume); static struct spi_driver vgg2432a4_driver = { .driver = { .name = "VGG2432A4", - .owner = THIS_MODULE, .pm = &vgg2432a4_pm_ops, }, .probe = vgg2432a4_probe, diff --git a/drivers/video/fbdev/mmp/panel/tpo_tj032md01bw.c b/drivers/video/fbdev/mmp/panel/tpo_tj032md01bw.c index 998978b08f5e..f7e85d1c9f9c 100644 --- a/drivers/video/fbdev/mmp/panel/tpo_tj032md01bw.c +++ b/drivers/video/fbdev/mmp/panel/tpo_tj032md01bw.c @@ -175,7 +175,6 @@ static int tpohvga_probe(struct spi_device *spi) static struct spi_driver panel_tpohvga_driver = { .driver = { .name = "tpo-hvga", - .owner = THIS_MODULE, }, .probe = tpohvga_probe, }; diff --git a/drivers/video/fbdev/omap/lcd_mipid.c b/drivers/video/fbdev/omap/lcd_mipid.c index 803fee618d57..0e4cee9a8d79 100644 --- a/drivers/video/fbdev/omap/lcd_mipid.c +++ b/drivers/video/fbdev/omap/lcd_mipid.c @@ -603,7 +603,6 @@ static int mipid_spi_remove(struct spi_device *spi) static struct spi_driver mipid_spi_driver = { .driver = { .name = MIPID_MODULE_NAME, - .owner = THIS_MODULE, }, .probe = mipid_spi_probe, .remove = mipid_spi_remove, diff --git a/drivers/video/fbdev/omap2/displays-new/panel-lgphilips-lb035q02.c b/drivers/video/fbdev/omap2/displays-new/panel-lgphilips-lb035q02.c index 6a1b6a89a928..18eb60e9c9ec 100644 --- a/drivers/video/fbdev/omap2/displays-new/panel-lgphilips-lb035q02.c +++ b/drivers/video/fbdev/omap2/displays-new/panel-lgphilips-lb035q02.c @@ -391,7 +391,6 @@ static struct spi_driver lb035q02_spi_driver = { .remove = lb035q02_panel_spi_remove, .driver = { .name = "panel_lgphilips_lb035q02", - .owner = THIS_MODULE, .of_match_table = lb035q02_of_match, .suppress_bind_attrs = true, }, diff --git a/drivers/video/fbdev/omap2/displays-new/panel-nec-nl8048hl11.c b/drivers/video/fbdev/omap2/displays-new/panel-nec-nl8048hl11.c index ccf3f4f3c703..8a928c9a2fc9 100644 --- a/drivers/video/fbdev/omap2/displays-new/panel-nec-nl8048hl11.c +++ b/drivers/video/fbdev/omap2/displays-new/panel-nec-nl8048hl11.c @@ -421,7 +421,6 @@ MODULE_DEVICE_TABLE(of, nec_8048_of_match); static struct spi_driver nec_8048_driver = { .driver = { .name = "panel-nec-nl8048hl11", - .owner = THIS_MODULE, .pm = NEC_8048_PM_OPS, .of_match_table = nec_8048_of_match, .suppress_bind_attrs = true, diff --git a/drivers/video/fbdev/omap2/displays-new/panel-sony-acx565akm.c b/drivers/video/fbdev/omap2/displays-new/panel-sony-acx565akm.c index 90cbc4c3406c..14c3283635f0 100644 --- a/drivers/video/fbdev/omap2/displays-new/panel-sony-acx565akm.c +++ b/drivers/video/fbdev/omap2/displays-new/panel-sony-acx565akm.c @@ -902,7 +902,6 @@ static const struct of_device_id acx565akm_of_match[] = { static struct spi_driver acx565akm_driver = { .driver = { .name = "acx565akm", - .owner = THIS_MODULE, .of_match_table = acx565akm_of_match, .suppress_bind_attrs = true, }, diff --git a/drivers/video/fbdev/omap2/displays-new/panel-tpo-td028ttec1.c b/drivers/video/fbdev/omap2/displays-new/panel-tpo-td028ttec1.c index 9edc51133c59..4d657f3ab679 100644 --- a/drivers/video/fbdev/omap2/displays-new/panel-tpo-td028ttec1.c +++ b/drivers/video/fbdev/omap2/displays-new/panel-tpo-td028ttec1.c @@ -498,7 +498,6 @@ static struct spi_driver td028ttec1_spi_driver = { .driver = { .name = "panel-tpo-td028ttec1", - .owner = THIS_MODULE, .of_match_table = td028ttec1_of_match, .suppress_bind_attrs = true, }, diff --git a/drivers/video/fbdev/omap2/displays-new/panel-tpo-td043mtea1.c b/drivers/video/fbdev/omap2/displays-new/panel-tpo-td043mtea1.c index 79e4a029aab9..68e3b68a2920 100644 --- a/drivers/video/fbdev/omap2/displays-new/panel-tpo-td043mtea1.c +++ b/drivers/video/fbdev/omap2/displays-new/panel-tpo-td043mtea1.c @@ -670,7 +670,6 @@ MODULE_DEVICE_TABLE(of, tpo_td043_of_match); static struct spi_driver tpo_td043_spi_driver = { .driver = { .name = "panel-tpo-td043mtea1", - .owner = THIS_MODULE, .pm = &tpo_td043_spi_pm, .of_match_table = tpo_td043_of_match, .suppress_bind_attrs = true, diff --git a/sound/soc/codecs/ad1836.c b/sound/soc/codecs/ad1836.c index 95f0bec26a1b..e2ce6c4d7ece 100644 --- a/sound/soc/codecs/ad1836.c +++ b/sound/soc/codecs/ad1836.c @@ -404,7 +404,6 @@ MODULE_DEVICE_TABLE(spi, ad1836_ids); static struct spi_driver ad1836_spi_driver = { .driver = { .name = "ad1836", - .owner = THIS_MODULE, }, .probe = ad1836_spi_probe, .remove = ad1836_spi_remove, diff --git a/sound/soc/codecs/ad193x-spi.c b/sound/soc/codecs/ad193x-spi.c index 390cef9b9dc2..8199a3de0024 100644 --- a/sound/soc/codecs/ad193x-spi.c +++ b/sound/soc/codecs/ad193x-spi.c @@ -36,7 +36,6 @@ static int ad193x_spi_remove(struct spi_device *spi) static struct spi_driver ad193x_spi_driver = { .driver = { .name = "ad193x", - .owner = THIS_MODULE, }, .probe = ad193x_spi_probe, .remove = ad193x_spi_remove, diff --git a/sound/soc/codecs/adau1761-spi.c b/sound/soc/codecs/adau1761-spi.c index cce2f11f1ffb..8bc1fbd25fcc 100644 --- a/sound/soc/codecs/adau1761-spi.c +++ b/sound/soc/codecs/adau1761-spi.c @@ -64,7 +64,6 @@ MODULE_DEVICE_TABLE(spi, adau1761_spi_id); static struct spi_driver adau1761_spi_driver = { .driver = { .name = "adau1761", - .owner = THIS_MODULE, }, .probe = adau1761_spi_probe, .remove = adau1761_spi_remove, diff --git a/sound/soc/codecs/adau1781-spi.c b/sound/soc/codecs/adau1781-spi.c index 194686716bbe..33a73ff78de4 100644 --- a/sound/soc/codecs/adau1781-spi.c +++ b/sound/soc/codecs/adau1781-spi.c @@ -62,7 +62,6 @@ MODULE_DEVICE_TABLE(spi, adau1781_spi_id); static struct spi_driver adau1781_spi_driver = { .driver = { .name = "adau1781", - .owner = THIS_MODULE, }, .probe = adau1781_spi_probe, .remove = adau1781_spi_remove, diff --git a/sound/soc/codecs/adau1977-spi.c b/sound/soc/codecs/adau1977-spi.c index b05cf5da3a94..0b46d88b481c 100644 --- a/sound/soc/codecs/adau1977-spi.c +++ b/sound/soc/codecs/adau1977-spi.c @@ -63,7 +63,6 @@ MODULE_DEVICE_TABLE(spi, adau1977_spi_ids); static struct spi_driver adau1977_spi_driver = { .driver = { .name = "adau1977", - .owner = THIS_MODULE, }, .probe = adau1977_spi_probe, .remove = adau1977_spi_remove, diff --git a/sound/soc/codecs/adav801.c b/sound/soc/codecs/adav801.c index 790fce33ab10..055f1228c2b4 100644 --- a/sound/soc/codecs/adav801.c +++ b/sound/soc/codecs/adav801.c @@ -39,7 +39,6 @@ static int adav80x_spi_remove(struct spi_device *spi) static struct spi_driver adav80x_spi_driver = { .driver = { .name = "adav801", - .owner = THIS_MODULE, }, .probe = adav80x_spi_probe, .remove = adav80x_spi_remove, diff --git a/sound/soc/codecs/ak4104.c b/sound/soc/codecs/ak4104.c index 1fd7f72b2a62..595d02d7602c 100644 --- a/sound/soc/codecs/ak4104.c +++ b/sound/soc/codecs/ak4104.c @@ -344,7 +344,6 @@ MODULE_DEVICE_TABLE(spi, ak4104_id_table); static struct spi_driver ak4104_spi_driver = { .driver = { .name = "ak4104", - .owner = THIS_MODULE, .of_match_table = ak4104_of_match, }, .id_table = ak4104_id_table, diff --git a/sound/soc/codecs/cs4271-spi.c b/sound/soc/codecs/cs4271-spi.c index acd49d86e706..1ff5f520196a 100644 --- a/sound/soc/codecs/cs4271-spi.c +++ b/sound/soc/codecs/cs4271-spi.c @@ -42,7 +42,6 @@ static int cs4271_spi_remove(struct spi_device *spi) static struct spi_driver cs4271_spi_driver = { .driver = { .name = "cs4271", - .owner = THIS_MODULE, .of_match_table = of_match_ptr(cs4271_dt_ids), }, .probe = cs4271_spi_probe, diff --git a/sound/soc/codecs/da7210.c b/sound/soc/codecs/da7210.c index 7dc52fe67c80..af23a61b7b28 100644 --- a/sound/soc/codecs/da7210.c +++ b/sound/soc/codecs/da7210.c @@ -1339,7 +1339,6 @@ static int da7210_spi_remove(struct spi_device *spi) static struct spi_driver da7210_spi_driver = { .driver = { .name = "da7210", - .owner = THIS_MODULE, }, .probe = da7210_spi_probe, .remove = da7210_spi_remove diff --git a/sound/soc/codecs/pcm1792a.c b/sound/soc/codecs/pcm1792a.c index 57b0c94a710b..08bb4863e96f 100644 --- a/sound/soc/codecs/pcm1792a.c +++ b/sound/soc/codecs/pcm1792a.c @@ -257,7 +257,6 @@ MODULE_DEVICE_TABLE(spi, pcm1792a_spi_ids); static struct spi_driver pcm1792a_codec_driver = { .driver = { .name = "pcm1792a", - .owner = THIS_MODULE, .of_match_table = of_match_ptr(pcm1792a_of_match), }, .id_table = pcm1792a_spi_ids, diff --git a/sound/soc/codecs/pcm512x-spi.c b/sound/soc/codecs/pcm512x-spi.c index 7b64a9cef704..712ed6598c48 100644 --- a/sound/soc/codecs/pcm512x-spi.c +++ b/sound/soc/codecs/pcm512x-spi.c @@ -64,7 +64,6 @@ static struct spi_driver pcm512x_spi_driver = { .id_table = pcm512x_spi_id, .driver = { .name = "pcm512x", - .owner = THIS_MODULE, .of_match_table = pcm512x_of_match, .pm = &pcm512x_pm_ops, }, diff --git a/sound/soc/codecs/rt5677-spi.c b/sound/soc/codecs/rt5677-spi.c index 3505aafbade4..91879ea95415 100644 --- a/sound/soc/codecs/rt5677-spi.c +++ b/sound/soc/codecs/rt5677-spi.c @@ -232,7 +232,6 @@ static int rt5677_spi_probe(struct spi_device *spi) static struct spi_driver rt5677_spi_driver = { .driver = { .name = "rt5677", - .owner = THIS_MODULE, }, .probe = rt5677_spi_probe, }; diff --git a/sound/soc/codecs/ssm2602-spi.c b/sound/soc/codecs/ssm2602-spi.c index b5df14fbe3ad..842f373045c6 100644 --- a/sound/soc/codecs/ssm2602-spi.c +++ b/sound/soc/codecs/ssm2602-spi.c @@ -35,7 +35,6 @@ MODULE_DEVICE_TABLE(of, ssm2602_of_match); static struct spi_driver ssm2602_spi_driver = { .driver = { .name = "ssm2602", - .owner = THIS_MODULE, .of_match_table = ssm2602_of_match, }, .probe = ssm2602_spi_probe, diff --git a/sound/soc/codecs/tlv320aic23-spi.c b/sound/soc/codecs/tlv320aic23-spi.c index 3b387e41d75d..f801ae051658 100644 --- a/sound/soc/codecs/tlv320aic23-spi.c +++ b/sound/soc/codecs/tlv320aic23-spi.c @@ -43,7 +43,6 @@ static int aic23_spi_remove(struct spi_device *spi) static struct spi_driver aic23_spi = { .driver = { .name = "tlv320aic23", - .owner = THIS_MODULE, }, .probe = aic23_spi_probe, .remove = aic23_spi_remove, diff --git a/sound/soc/codecs/tlv320aic26.c b/sound/soc/codecs/tlv320aic26.c index 620ab9ea1ef0..2c904d7150ad 100644 --- a/sound/soc/codecs/tlv320aic26.c +++ b/sound/soc/codecs/tlv320aic26.c @@ -373,7 +373,6 @@ static int aic26_spi_remove(struct spi_device *spi) static struct spi_driver aic26_spi = { .driver = { .name = "tlv320aic26-codec", - .owner = THIS_MODULE, }, .probe = aic26_spi_probe, .remove = aic26_spi_remove, diff --git a/sound/soc/codecs/wm0010.c b/sound/soc/codecs/wm0010.c index f2c6ad4b8fde..9cf4a0dab46f 100644 --- a/sound/soc/codecs/wm0010.c +++ b/sound/soc/codecs/wm0010.c @@ -1003,7 +1003,6 @@ static int wm0010_spi_remove(struct spi_device *spi) static struct spi_driver wm0010_spi_driver = { .driver = { .name = "wm0010", - .owner = THIS_MODULE, }, .probe = wm0010_spi_probe, .remove = wm0010_spi_remove, diff --git a/sound/soc/codecs/wm8510.c b/sound/soc/codecs/wm8510.c index b098a83a44d8..99e40e629cca 100644 --- a/sound/soc/codecs/wm8510.c +++ b/sound/soc/codecs/wm8510.c @@ -644,7 +644,6 @@ static int wm8510_spi_remove(struct spi_device *spi) static struct spi_driver wm8510_spi_driver = { .driver = { .name = "wm8510", - .owner = THIS_MODULE, .of_match_table = wm8510_of_match, }, .probe = wm8510_spi_probe, diff --git a/sound/soc/codecs/wm8711.c b/sound/soc/codecs/wm8711.c index 44b9e0ae7451..c759ec068e97 100644 --- a/sound/soc/codecs/wm8711.c +++ b/sound/soc/codecs/wm8711.c @@ -431,7 +431,6 @@ static int wm8711_spi_remove(struct spi_device *spi) static struct spi_driver wm8711_spi_driver = { .driver = { .name = "wm8711", - .owner = THIS_MODULE, .of_match_table = wm8711_of_match, }, .probe = wm8711_spi_probe, diff --git a/sound/soc/codecs/wm8728.c b/sound/soc/codecs/wm8728.c index cd7b02413ccf..1564e6926527 100644 --- a/sound/soc/codecs/wm8728.c +++ b/sound/soc/codecs/wm8728.c @@ -272,7 +272,6 @@ static int wm8728_spi_remove(struct spi_device *spi) static struct spi_driver wm8728_spi_driver = { .driver = { .name = "wm8728", - .owner = THIS_MODULE, .of_match_table = wm8728_of_match, }, .probe = wm8728_spi_probe, diff --git a/sound/soc/codecs/wm8731.c b/sound/soc/codecs/wm8731.c index ace8645245a0..15bd547e3c84 100644 --- a/sound/soc/codecs/wm8731.c +++ b/sound/soc/codecs/wm8731.c @@ -718,7 +718,6 @@ static int wm8731_spi_remove(struct spi_device *spi) static struct spi_driver wm8731_spi_driver = { .driver = { .name = "wm8731", - .owner = THIS_MODULE, .of_match_table = wm8731_of_match, }, .probe = wm8731_spi_probe, diff --git a/sound/soc/codecs/wm8737.c b/sound/soc/codecs/wm8737.c index e4a03d98aed4..e7807601e675 100644 --- a/sound/soc/codecs/wm8737.c +++ b/sound/soc/codecs/wm8737.c @@ -707,7 +707,6 @@ static int wm8737_spi_remove(struct spi_device *spi) static struct spi_driver wm8737_spi_driver = { .driver = { .name = "wm8737", - .owner = THIS_MODULE, .of_match_table = wm8737_of_match, }, .probe = wm8737_spi_probe, diff --git a/sound/soc/codecs/wm8741.c b/sound/soc/codecs/wm8741.c index de42c0388772..36ef91fe0511 100644 --- a/sound/soc/codecs/wm8741.c +++ b/sound/soc/codecs/wm8741.c @@ -657,7 +657,6 @@ static int wm8741_spi_remove(struct spi_device *spi) static struct spi_driver wm8741_spi_driver = { .driver = { .name = "wm8741", - .owner = THIS_MODULE, .of_match_table = wm8741_of_match, }, .probe = wm8741_spi_probe, diff --git a/sound/soc/codecs/wm8750.c b/sound/soc/codecs/wm8750.c index 873933a7966f..bd9dcd2161bc 100644 --- a/sound/soc/codecs/wm8750.c +++ b/sound/soc/codecs/wm8750.c @@ -777,7 +777,6 @@ MODULE_DEVICE_TABLE(spi, wm8750_spi_ids); static struct spi_driver wm8750_spi_driver = { .driver = { .name = "wm8750", - .owner = THIS_MODULE, .of_match_table = wm8750_of_match, }, .id_table = wm8750_spi_ids, diff --git a/sound/soc/codecs/wm8753.c b/sound/soc/codecs/wm8753.c index a801c6d75436..61299ca372ff 100644 --- a/sound/soc/codecs/wm8753.c +++ b/sound/soc/codecs/wm8753.c @@ -1549,7 +1549,6 @@ static int wm8753_spi_remove(struct spi_device *spi) static struct spi_driver wm8753_spi_driver = { .driver = { .name = "wm8753", - .owner = THIS_MODULE, .of_match_table = wm8753_of_match, }, .probe = wm8753_spi_probe, diff --git a/sound/soc/codecs/wm8770.c b/sound/soc/codecs/wm8770.c index 66c1f151071d..df6178464b00 100644 --- a/sound/soc/codecs/wm8770.c +++ b/sound/soc/codecs/wm8770.c @@ -703,7 +703,6 @@ static int wm8770_spi_remove(struct spi_device *spi) static struct spi_driver wm8770_spi_driver = { .driver = { .name = "wm8770", - .owner = THIS_MODULE, .of_match_table = wm8770_of_match, }, .probe = wm8770_spi_probe, diff --git a/sound/soc/codecs/wm8776.c b/sound/soc/codecs/wm8776.c index 183c9a4966c5..5af44f9a8cf2 100644 --- a/sound/soc/codecs/wm8776.c +++ b/sound/soc/codecs/wm8776.c @@ -488,7 +488,6 @@ static int wm8776_spi_remove(struct spi_device *spi) static struct spi_driver wm8776_spi_driver = { .driver = { .name = "wm8776", - .owner = THIS_MODULE, .of_match_table = wm8776_of_match, }, .probe = wm8776_spi_probe, diff --git a/sound/soc/codecs/wm8804-spi.c b/sound/soc/codecs/wm8804-spi.c index 407a3cf391e5..9998c78a2325 100644 --- a/sound/soc/codecs/wm8804-spi.c +++ b/sound/soc/codecs/wm8804-spi.c @@ -42,7 +42,6 @@ MODULE_DEVICE_TABLE(of, wm8804_of_match); static struct spi_driver wm8804_spi_driver = { .driver = { .name = "wm8804", - .owner = THIS_MODULE, .pm = &wm8804_pm, .of_match_table = wm8804_of_match, }, diff --git a/sound/soc/codecs/wm8900.c b/sound/soc/codecs/wm8900.c index 98900aa66dc3..5d8dca88d612 100644 --- a/sound/soc/codecs/wm8900.c +++ b/sound/soc/codecs/wm8900.c @@ -1266,7 +1266,6 @@ static int wm8900_spi_remove(struct spi_device *spi) static struct spi_driver wm8900_spi_driver = { .driver = { .name = "wm8900", - .owner = THIS_MODULE, }, .probe = wm8900_spi_probe, .remove = wm8900_spi_remove, diff --git a/sound/soc/codecs/wm8983.c b/sound/soc/codecs/wm8983.c index f3193fb751cc..7350ff654bbf 100644 --- a/sound/soc/codecs/wm8983.c +++ b/sound/soc/codecs/wm8983.c @@ -1033,7 +1033,6 @@ static int wm8983_spi_remove(struct spi_device *spi) static struct spi_driver wm8983_spi_driver = { .driver = { .name = "wm8983", - .owner = THIS_MODULE, }, .probe = wm8983_spi_probe, .remove = wm8983_spi_remove diff --git a/sound/soc/codecs/wm8985.c b/sound/soc/codecs/wm8985.c index 9c3c1517a4f3..9918152a03c7 100644 --- a/sound/soc/codecs/wm8985.c +++ b/sound/soc/codecs/wm8985.c @@ -1096,7 +1096,6 @@ static int wm8985_spi_remove(struct spi_device *spi) static struct spi_driver wm8985_spi_driver = { .driver = { .name = "wm8985", - .owner = THIS_MODULE, }, .probe = wm8985_spi_probe, .remove = wm8985_spi_remove diff --git a/sound/soc/codecs/wm8988.c b/sound/soc/codecs/wm8988.c index c88ce99ce9e1..895721a256f0 100644 --- a/sound/soc/codecs/wm8988.c +++ b/sound/soc/codecs/wm8988.c @@ -871,7 +871,6 @@ static int wm8988_spi_remove(struct spi_device *spi) static struct spi_driver wm8988_spi_driver = { .driver = { .name = "wm8988", - .owner = THIS_MODULE, }, .probe = wm8988_spi_probe, .remove = wm8988_spi_remove, diff --git a/sound/soc/codecs/wm8995.c b/sound/soc/codecs/wm8995.c index eda52a96c1fa..24500bafb0a8 100644 --- a/sound/soc/codecs/wm8995.c +++ b/sound/soc/codecs/wm8995.c @@ -2246,7 +2246,6 @@ static int wm8995_spi_remove(struct spi_device *spi) static struct spi_driver wm8995_spi_driver = { .driver = { .name = "wm8995", - .owner = THIS_MODULE, }, .probe = wm8995_spi_probe, .remove = wm8995_spi_remove -- cgit v1.2.1 From eca37c7c117460e2fbe4e32c991bff32a961f688 Mon Sep 17 00:00:00 2001 From: Ricardo Ribalda Delgado Date: Wed, 28 Oct 2015 16:16:02 +0100 Subject: spi/spi-xilinx: Fix race condition on last word read Some users have reported that in polled mode the driver fails randomly to read the last word of the transfer. The end condition used for the transmissions (in polled and irq mode) has been the TX_EMPTY flag. But Lars-Peter Clausen has identified a delay from the TX_EMPTY to the actual end of the data rx. I believe that this race condition has not been detected until now because of the latency added by the IRQ handler or the PCIe bridge. This bugs affects setups with low latency access to the spi core. This patch replaces the readout logic: For all the words, except the last one, the TX_EMPTY flag is used (and cached). If !TX_EMPY or is the last word. The status register is read and the RX_EMPTY flag is used. The performance is not affected: there is an extra read of the Status Register, but the readout can start as soon as there is a word in the buffer. Reported-by: Edward Kigwana Initial-fix-by: Lars-Peter Clausen Signed-off-by: Ricardo Ribalda Delgado Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- drivers/spi/spi-xilinx.c | 38 ++++++++++++++++++++++++-------------- 1 file changed, 24 insertions(+), 14 deletions(-) diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c index a339c1e9997a..3009121173cd 100644 --- a/drivers/spi/spi-xilinx.c +++ b/drivers/spi/spi-xilinx.c @@ -270,6 +270,7 @@ static int xilinx_spi_txrx_bufs(struct spi_device *spi, struct spi_transfer *t) while (remaining_words) { int n_words, tx_words, rx_words; + u32 sr; n_words = min(remaining_words, xspi->buffer_size); @@ -284,24 +285,33 @@ static int xilinx_spi_txrx_bufs(struct spi_device *spi, struct spi_transfer *t) if (use_irq) { xspi->write_fn(cr, xspi->regs + XSPI_CR_OFFSET); wait_for_completion(&xspi->done); - } else - while (!(xspi->read_fn(xspi->regs + XSPI_SR_OFFSET) & - XSPI_SR_TX_EMPTY_MASK)) - ; - - /* A transmit has just completed. Process received data and - * check for more data to transmit. Always inhibit the - * transmitter while the Isr refills the transmit register/FIFO, - * or make sure it is stopped if we're done. - */ - if (use_irq) + /* A transmit has just completed. Process received data + * and check for more data to transmit. Always inhibit + * the transmitter while the Isr refills the transmit + * register/FIFO, or make sure it is stopped if we're + * done. + */ xspi->write_fn(cr | XSPI_CR_TRANS_INHIBIT, - xspi->regs + XSPI_CR_OFFSET); + xspi->regs + XSPI_CR_OFFSET); + sr = XSPI_SR_TX_EMPTY_MASK; + } else + sr = xspi->read_fn(xspi->regs + XSPI_SR_OFFSET); /* Read out all the data from the Rx FIFO */ rx_words = n_words; - while (rx_words--) - xilinx_spi_rx(xspi); + while (rx_words) { + if ((sr & XSPI_SR_TX_EMPTY_MASK) && (rx_words > 1)) { + xilinx_spi_rx(xspi); + rx_words--; + continue; + } + + sr = xspi->read_fn(xspi->regs + XSPI_SR_OFFSET); + if (!(sr & XSPI_SR_RX_EMPTY_MASK)) { + xilinx_spi_rx(xspi); + rx_words--; + } + } remaining_words -= n_words; } -- cgit v1.2.1 From e6b5140b706689a38aaeabd9de8fb3e1531cf9cb Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 29 Oct 2015 08:57:30 -0500 Subject: spi: ti-qspi: improve ->remove() callback there's no need to call pm_runtime_get_sync() followed by pm_runtime_put(). We should, instead, just call pm_runtime_put_sync() and pm_runtime_disable(). Signed-off-by: Felipe Balbi Signed-off-by: Mark Brown --- drivers/spi/spi-ti-qspi.c | 11 +---------- 1 file changed, 1 insertion(+), 10 deletions(-) diff --git a/drivers/spi/spi-ti-qspi.c b/drivers/spi/spi-ti-qspi.c index 89cf0c821524..432bcc374d50 100644 --- a/drivers/spi/spi-ti-qspi.c +++ b/drivers/spi/spi-ti-qspi.c @@ -555,16 +555,7 @@ free_master: static int ti_qspi_remove(struct platform_device *pdev) { - struct ti_qspi *qspi = platform_get_drvdata(pdev); - int ret; - - ret = pm_runtime_get_sync(qspi->dev); - if (ret < 0) { - dev_err(qspi->dev, "pm_runtime_get_sync() failed\n"); - return ret; - } - - pm_runtime_put(qspi->dev); + pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); return 0; -- cgit v1.2.1 From 5a60adafb95263d63dfaaf7168680c4b7e50b370 Mon Sep 17 00:00:00 2001 From: Yuan Yao Date: Wed, 28 Oct 2015 17:41:59 +0800 Subject: spi: Add DSPI support for layerscape family LS1043a and LS2080A in the Layerscape family also support DSPI, make DSPI selectable for these hardwares. Signed-off-by: Yuan Yao Signed-off-by: Mark Brown --- drivers/spi/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index 4887f317ea58..bb41bd54ac0a 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -304,7 +304,7 @@ config SPI_FSL_SPI config SPI_FSL_DSPI tristate "Freescale DSPI controller" select REGMAP_MMIO - depends on SOC_VF610 || SOC_LS1021A || COMPILE_TEST + depends on SOC_VF610 || SOC_LS1021A || ARCH_LAYERSCAPE || COMPILE_TEST help This enables support for the Freescale DSPI controller in master mode. VF610 platform uses the controller. -- cgit v1.2.1 From 624ea72ebddc1f61d32c9e6265f8d6f6dacd26d6 Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Wed, 28 Oct 2015 15:13:39 +0200 Subject: spi: pxa2xx: Use LPSS prefix for defines that are Intel LPSS specific Rename a few defines that are specific to Intel LPSS SPI private registers with LPSS prefix. It makes easier to distinguish them from common defines. Suggested-by: Robert Jarzmik Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- drivers/spi/spi-pxa2xx.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index 0f6a6c89eab3..9060aee5a7b1 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -61,9 +61,9 @@ MODULE_ALIAS("platform:pxa2xx-spi"); | QUARK_X1000_SSCR1_TFT \ | SSCR1_SPH | SSCR1_SPO | SSCR1_LBM) -#define GENERAL_REG_RXTO_HOLDOFF_DISABLE BIT(24) -#define SPI_CS_CONTROL_SW_MODE BIT(0) -#define SPI_CS_CONTROL_CS_HIGH BIT(1) +#define LPSS_GENERAL_REG_RXTO_HOLDOFF_DISABLE BIT(24) +#define LPSS_CS_CONTROL_SW_MODE BIT(0) +#define LPSS_CS_CONTROL_CS_HIGH BIT(1) struct lpss_config { /* LPSS offset from drv_data->ioaddr */ @@ -250,8 +250,8 @@ static void lpss_ssp_setup(struct driver_data *drv_data) /* Enable software chip select control */ value = __lpss_ssp_read_priv(drv_data, config->reg_cs_ctrl); - value &= ~(SPI_CS_CONTROL_SW_MODE | SPI_CS_CONTROL_CS_HIGH); - value |= SPI_CS_CONTROL_SW_MODE | SPI_CS_CONTROL_CS_HIGH; + value &= ~(LPSS_CS_CONTROL_SW_MODE | LPSS_CS_CONTROL_CS_HIGH); + value |= LPSS_CS_CONTROL_SW_MODE | LPSS_CS_CONTROL_CS_HIGH; __lpss_ssp_write_priv(drv_data, config->reg_cs_ctrl, value); /* Enable multiblock DMA transfers */ @@ -261,7 +261,7 @@ static void lpss_ssp_setup(struct driver_data *drv_data) if (config->reg_general >= 0) { value = __lpss_ssp_read_priv(drv_data, config->reg_general); - value |= GENERAL_REG_RXTO_HOLDOFF_DISABLE; + value |= LPSS_GENERAL_REG_RXTO_HOLDOFF_DISABLE; __lpss_ssp_write_priv(drv_data, config->reg_general, value); } @@ -277,9 +277,9 @@ static void lpss_ssp_cs_control(struct driver_data *drv_data, bool enable) value = __lpss_ssp_read_priv(drv_data, config->reg_cs_ctrl); if (enable) - value &= ~SPI_CS_CONTROL_CS_HIGH; + value &= ~LPSS_CS_CONTROL_CS_HIGH; else - value |= SPI_CS_CONTROL_CS_HIGH; + value |= LPSS_CS_CONTROL_CS_HIGH; __lpss_ssp_write_priv(drv_data, config->reg_cs_ctrl, value); } -- cgit v1.2.1 From d0283eb2dbc11ec08375fdf6a436e96d25b3a593 Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Wed, 28 Oct 2015 15:13:40 +0200 Subject: spi: pxa2xx: Add output control for multiple Intel LPSS chip selects Intel LPSS SPI host controllers in upcoming Intel platforms can have up to 4 chip selects per port. Extend chip select control in lpss_ssp_cs_control() by adding a code that selects the active chip select output prior to changing the state. Detection for number of enabled chip select signals will be added by another patch. Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- drivers/spi/spi-pxa2xx.c | 27 ++++++++++++++++++++++++--- 1 file changed, 24 insertions(+), 3 deletions(-) diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index 9060aee5a7b1..040f6bb566a1 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -64,6 +64,8 @@ MODULE_ALIAS("platform:pxa2xx-spi"); #define LPSS_GENERAL_REG_RXTO_HOLDOFF_DISABLE BIT(24) #define LPSS_CS_CONTROL_SW_MODE BIT(0) #define LPSS_CS_CONTROL_CS_HIGH BIT(1) +#define LPSS_CS_CONTROL_CS_SEL_SHIFT 8 +#define LPSS_CS_CONTROL_CS_SEL_MASK (3 << LPSS_CS_CONTROL_CS_SEL_SHIFT) struct lpss_config { /* LPSS offset from drv_data->ioaddr */ @@ -271,15 +273,34 @@ static void lpss_ssp_setup(struct driver_data *drv_data) static void lpss_ssp_cs_control(struct driver_data *drv_data, bool enable) { const struct lpss_config *config; - u32 value; + u32 value, cs; config = lpss_get_config(drv_data); value = __lpss_ssp_read_priv(drv_data, config->reg_cs_ctrl); - if (enable) + if (enable) { + cs = drv_data->cur_msg->spi->chip_select; + cs <<= LPSS_CS_CONTROL_CS_SEL_SHIFT; + if (cs != (value & LPSS_CS_CONTROL_CS_SEL_MASK)) { + /* + * When switching another chip select output active + * the output must be selected first and wait 2 ssp_clk + * cycles before changing state to active. Otherwise + * a short glitch will occur on the previous chip + * select since output select is latched but state + * control is not. + */ + value &= ~LPSS_CS_CONTROL_CS_SEL_MASK; + value |= cs; + __lpss_ssp_write_priv(drv_data, + config->reg_cs_ctrl, value); + ndelay(1000000000 / + (drv_data->master->max_speed_hz / 2)); + } value &= ~LPSS_CS_CONTROL_CS_HIGH; - else + } else { value |= LPSS_CS_CONTROL_CS_HIGH; + } __lpss_ssp_write_priv(drv_data, config->reg_cs_ctrl, value); } -- cgit v1.2.1 From 8b136baa5892f25bba0373d6eb0f5f84efc93986 Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Wed, 28 Oct 2015 15:13:41 +0200 Subject: spi: pxa2xx: Detect number of enabled Intel LPSS SPI chip select signals SPI capabilities register located in private registers space of newer Intel LPSS SPI host controllers tell in register bits 12:9 which chip select signals are enabled. Use that information for detecting the number of chip selects. For simplicity we assume chip selects are enabled one after another without disabled chip selects between. For instance CS0 | CS1 | CS2 but not CS0 | CS1 | CS3. Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- drivers/spi/spi-pxa2xx.c | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index 040f6bb566a1..a5c2dce7d0a3 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -13,6 +13,7 @@ * GNU General Public License for more details. */ +#include #include #include #include @@ -66,6 +67,8 @@ MODULE_ALIAS("platform:pxa2xx-spi"); #define LPSS_CS_CONTROL_CS_HIGH BIT(1) #define LPSS_CS_CONTROL_CS_SEL_SHIFT 8 #define LPSS_CS_CONTROL_CS_SEL_MASK (3 << LPSS_CS_CONTROL_CS_SEL_SHIFT) +#define LPSS_CAPS_CS_EN_SHIFT 9 +#define LPSS_CAPS_CS_EN_MASK (0xf << LPSS_CAPS_CS_EN_SHIFT) struct lpss_config { /* LPSS offset from drv_data->ioaddr */ @@ -74,6 +77,7 @@ struct lpss_config { int reg_general; int reg_ssp; int reg_cs_ctrl; + int reg_capabilities; /* FIFO thresholds */ u32 rx_threshold; u32 tx_threshold_lo; @@ -87,6 +91,7 @@ static const struct lpss_config lpss_platforms[] = { .reg_general = 0x08, .reg_ssp = 0x0c, .reg_cs_ctrl = 0x18, + .reg_capabilities = -1, .rx_threshold = 64, .tx_threshold_lo = 160, .tx_threshold_hi = 224, @@ -96,6 +101,7 @@ static const struct lpss_config lpss_platforms[] = { .reg_general = 0x08, .reg_ssp = 0x0c, .reg_cs_ctrl = 0x18, + .reg_capabilities = -1, .rx_threshold = 64, .tx_threshold_lo = 160, .tx_threshold_hi = 224, @@ -105,6 +111,7 @@ static const struct lpss_config lpss_platforms[] = { .reg_general = -1, .reg_ssp = 0x20, .reg_cs_ctrl = 0x24, + .reg_capabilities = 0xfc, .rx_threshold = 1, .tx_threshold_lo = 32, .tx_threshold_hi = 56, @@ -1400,6 +1407,7 @@ static int pxa2xx_spi_probe(struct platform_device *pdev) struct spi_master *master; struct driver_data *drv_data; struct ssp_device *ssp; + const struct lpss_config *config; int status; u32 tmp; @@ -1439,7 +1447,6 @@ static int pxa2xx_spi_probe(struct platform_device *pdev) master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_LOOP; master->bus_num = ssp->port_id; - master->num_chipselect = platform_info->num_chipselect; master->dma_alignment = DMA_ALIGNMENT; master->cleanup = cleanup; master->setup = setup; @@ -1525,6 +1532,19 @@ static int pxa2xx_spi_probe(struct platform_device *pdev) if (is_lpss_ssp(drv_data)) lpss_ssp_setup(drv_data); + if (is_lpss_ssp(drv_data)) { + lpss_ssp_setup(drv_data); + config = lpss_get_config(drv_data); + if (config->reg_capabilities >= 0) { + tmp = __lpss_ssp_read_priv(drv_data, + config->reg_capabilities); + tmp &= LPSS_CAPS_CS_EN_MASK; + tmp >>= LPSS_CAPS_CS_EN_SHIFT; + platform_info->num_chipselect = ffz(tmp); + } + } + master->num_chipselect = platform_info->num_chipselect; + tasklet_init(&drv_data->pump_transfers, pump_transfers, (unsigned long)drv_data); -- cgit v1.2.1 From b7c08cf85c9a3a4b05474b7acacc9fbce8fb3eaf Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Wed, 28 Oct 2015 15:13:42 +0200 Subject: spi: pxa2xx: Add support for Intel Broxton LPSS SPI in Intel Broxton is otherwise the same than in Intel Sunrisepoint but it supports up to four chip selects per port and has different FIFO thresholds. Patch adds support for two Broxton SoC variants. Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- drivers/spi/spi-pxa2xx.c | 20 ++++++++++++++++++++ include/linux/pxa2xx_ssp.h | 1 + 2 files changed, 21 insertions(+) diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index a5c2dce7d0a3..f759c082f0f7 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -116,6 +116,16 @@ static const struct lpss_config lpss_platforms[] = { .tx_threshold_lo = 32, .tx_threshold_hi = 56, }, + { /* LPSS_BXT_SSP */ + .offset = 0x200, + .reg_general = -1, + .reg_ssp = 0x20, + .reg_cs_ctrl = 0x24, + .reg_capabilities = 0xfc, + .rx_threshold = 1, + .tx_threshold_lo = 16, + .tx_threshold_hi = 48, + }, }; static inline const struct lpss_config @@ -130,6 +140,7 @@ static bool is_lpss_ssp(const struct driver_data *drv_data) case LPSS_LPT_SSP: case LPSS_BYT_SSP: case LPSS_SPT_SSP: + case LPSS_BXT_SSP: return true; default: return false; @@ -1152,6 +1163,7 @@ static int setup(struct spi_device *spi) case LPSS_LPT_SSP: case LPSS_BYT_SSP: case LPSS_SPT_SSP: + case LPSS_BXT_SSP: config = lpss_get_config(drv_data); tx_thres = config->tx_threshold_lo; tx_hi_thres = config->tx_threshold_hi; @@ -1313,6 +1325,14 @@ static const struct pci_device_id pxa2xx_spi_pci_compound_match[] = { /* SPT-H */ { PCI_VDEVICE(INTEL, 0xa129), LPSS_SPT_SSP }, { PCI_VDEVICE(INTEL, 0xa12a), LPSS_SPT_SSP }, + /* BXT */ + { PCI_VDEVICE(INTEL, 0x0ac2), LPSS_BXT_SSP }, + { PCI_VDEVICE(INTEL, 0x0ac4), LPSS_BXT_SSP }, + { PCI_VDEVICE(INTEL, 0x0ac6), LPSS_BXT_SSP }, + /* APL */ + { PCI_VDEVICE(INTEL, 0x5ac2), LPSS_BXT_SSP }, + { PCI_VDEVICE(INTEL, 0x5ac4), LPSS_BXT_SSP }, + { PCI_VDEVICE(INTEL, 0x5ac6), LPSS_BXT_SSP }, { }, }; diff --git a/include/linux/pxa2xx_ssp.h b/include/linux/pxa2xx_ssp.h index 92273776bce6..c2f2574ff61c 100644 --- a/include/linux/pxa2xx_ssp.h +++ b/include/linux/pxa2xx_ssp.h @@ -198,6 +198,7 @@ enum pxa_ssp_type { LPSS_LPT_SSP, /* Keep LPSS types sorted with lpss_platforms[] */ LPSS_BYT_SSP, LPSS_SPT_SSP, + LPSS_BXT_SSP, }; struct ssp_device { -- cgit v1.2.1 From 0db642151ad80967e9e1c2abf3e19bd7902ecdc9 Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Wed, 28 Oct 2015 15:13:43 +0200 Subject: spi: pxa2xx: Rework self-initiated platform data creation for non-ACPI Extend the pxa2xx_spi_acpi_get_pdata() so that it can create platform data also on platforms that do not support ACPI or if CONFIG_ACPI is not set. Now it is expected that "pxa2xx-spi" platform device is either created with explicit platform data or has an ACPI companion device. However there is only little in pxa2xx_spi_acpi_get_pdata() that is really dependent on ACPI companion and it can be reworked to cover also cases where "pxa2xx-spi" device doesn't have ACPI companion and is created without platform data. Do this by renaming the pxa2xx_spi_acpi_get_pdata(), moving it outside of CONFIG_ACPI test and changing a few runtime tests there to support non-ACPI case. Only port/bus ID setting based on ACPI _UID is dependent on ACPI and is moved to own function inside CONFIG_ACPI. Purpose of this to support non-ACPI case for those PCI enumerated compound devices that integrate both LPSS SPI host controller and integrated DMA engine under the same PCI ID and which are registered in MFD layer instead of in spi-pxa2xx-pci.c. Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- drivers/spi/spi-pxa2xx.c | 38 ++++++++++++++++++++++++++------------ 1 file changed, 26 insertions(+), 12 deletions(-) diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index f759c082f0f7..2e951084987d 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -1300,6 +1300,7 @@ static void cleanup(struct spi_device *spi) kfree(chip); } +#ifdef CONFIG_PCI #ifdef CONFIG_ACPI static const struct acpi_device_id pxa2xx_spi_acpi_match[] = { @@ -1313,6 +1314,23 @@ static const struct acpi_device_id pxa2xx_spi_acpi_match[] = { }; MODULE_DEVICE_TABLE(acpi, pxa2xx_spi_acpi_match); +static int pxa2xx_spi_get_port_id(struct acpi_device *adev) +{ + unsigned int devid; + int port_id = -1; + + if (adev && adev->pnp.unique_id && + !kstrtouint(adev->pnp.unique_id, 0, &devid)) + port_id = devid; + return port_id; +} +#else /* !CONFIG_ACPI */ +static int pxa2xx_spi_get_port_id(struct acpi_device *adev) +{ + return -1; +} +#endif + /* * PCI IDs of compound devices that integrate both host controller and private * integrated DMA engine. Please note these are not used in module @@ -1347,7 +1365,7 @@ static bool pxa2xx_spi_idma_filter(struct dma_chan *chan, void *param) } static struct pxa2xx_spi_master * -pxa2xx_spi_acpi_get_pdata(struct platform_device *pdev) +pxa2xx_spi_init_pdata(struct platform_device *pdev) { struct pxa2xx_spi_master *pdata; struct acpi_device *adev; @@ -1355,19 +1373,18 @@ pxa2xx_spi_acpi_get_pdata(struct platform_device *pdev) struct resource *res; const struct acpi_device_id *adev_id = NULL; const struct pci_device_id *pcidev_id = NULL; - unsigned int devid; int type; adev = ACPI_COMPANION(&pdev->dev); - if (!adev) - return NULL; if (dev_is_pci(pdev->dev.parent)) pcidev_id = pci_match_id(pxa2xx_spi_pci_compound_match, to_pci_dev(pdev->dev.parent)); - else + else if (adev) adev_id = acpi_match_device(pdev->dev.driver->acpi_match_table, &pdev->dev); + else + return NULL; if (adev_id) type = (int)adev_id->driver_data; @@ -1401,10 +1418,7 @@ pxa2xx_spi_acpi_get_pdata(struct platform_device *pdev) ssp->irq = platform_get_irq(pdev, 0); ssp->type = type; ssp->pdev = pdev; - - ssp->port_id = -1; - if (adev->pnp.unique_id && !kstrtouint(adev->pnp.unique_id, 0, &devid)) - ssp->port_id = devid; + ssp->port_id = pxa2xx_spi_get_port_id(adev); pdata->num_chipselect = 1; pdata->enable_dma = true; @@ -1412,9 +1426,9 @@ pxa2xx_spi_acpi_get_pdata(struct platform_device *pdev) return pdata; } -#else +#else /* !CONFIG_PCI */ static inline struct pxa2xx_spi_master * -pxa2xx_spi_acpi_get_pdata(struct platform_device *pdev) +pxa2xx_spi_init_pdata(struct platform_device *pdev) { return NULL; } @@ -1433,7 +1447,7 @@ static int pxa2xx_spi_probe(struct platform_device *pdev) platform_info = dev_get_platdata(dev); if (!platform_info) { - platform_info = pxa2xx_spi_acpi_get_pdata(pdev); + platform_info = pxa2xx_spi_init_pdata(pdev); if (!platform_info) { dev_err(&pdev->dev, "missing platform data\n"); return -ENODEV; -- cgit v1.2.1