diff options
| author | Alexander Shiyan <shc_work@mail.ru> | 2014-09-20 11:05:09 +0400 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2014-09-24 09:40:24 +0100 |
| commit | a5b4b234e15b68539dd4677bb8b0aeeef100fbba (patch) | |
| tree | a380e53313c30709bfc98578ba43c642aed3561a /drivers | |
| parent | 7d1311b93e58ed55f3a31cc8f94c4b8fe988a2b9 (diff) | |
| download | blackbird-op-linux-a5b4b234e15b68539dd4677bb8b0aeeef100fbba.tar.gz blackbird-op-linux-a5b4b234e15b68539dd4677bb8b0aeeef100fbba.zip | |
spi: clps711x: Migrate to the new clk subsystem
Currently clps711x arch have a fully functional CLK driver.
This patch migrates clps711x-spi driver to use the new CLK subsystem.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/spi/spi-clps711x.c | 34 |
1 files changed, 2 insertions, 32 deletions
diff --git a/drivers/spi/spi-clps711x.c b/drivers/spi/spi-clps711x.c index ce538dad526b..181cf2262006 100644 --- a/drivers/spi/spi-clps711x.c +++ b/drivers/spi/spi-clps711x.c @@ -30,7 +30,6 @@ struct spi_clps711x_data { void __iomem *syncio; struct regmap *syscon; - struct regmap *syscon1; struct clk *spi_clk; u8 *tx_buf; @@ -47,27 +46,6 @@ static int spi_clps711x_setup(struct spi_device *spi) return 0; } -static void spi_clps711x_setup_xfer(struct spi_device *spi, - struct spi_transfer *xfer) -{ - struct spi_master *master = spi->master; - struct spi_clps711x_data *hw = spi_master_get_devdata(master); - - /* Setup SPI frequency divider */ - if (xfer->speed_hz >= master->max_speed_hz) - regmap_update_bits(hw->syscon1, SYSCON_OFFSET, - SYSCON1_ADCKSEL_MASK, SYSCON1_ADCKSEL(3)); - else if (xfer->speed_hz >= (master->max_speed_hz / 2)) - regmap_update_bits(hw->syscon1, SYSCON_OFFSET, - SYSCON1_ADCKSEL_MASK, SYSCON1_ADCKSEL(2)); - else if (xfer->speed_hz >= (master->max_speed_hz / 8)) - regmap_update_bits(hw->syscon1, SYSCON_OFFSET, - SYSCON1_ADCKSEL_MASK, SYSCON1_ADCKSEL(1)); - else - regmap_update_bits(hw->syscon1, SYSCON_OFFSET, - SYSCON1_ADCKSEL_MASK, SYSCON1_ADCKSEL(0)); -} - static int spi_clps711x_prepare_message(struct spi_master *master, struct spi_message *msg) { @@ -87,7 +65,7 @@ static int spi_clps711x_transfer_one(struct spi_master *master, struct spi_clps711x_data *hw = spi_master_get_devdata(master); u8 data; - spi_clps711x_setup_xfer(spi, xfer); + clk_set_rate(hw->spi_clk, xfer->speed_hz ? : spi->max_speed_hz); hw->len = xfer->len; hw->bpw = xfer->bits_per_word; @@ -176,13 +154,11 @@ static int spi_clps711x_probe(struct platform_device *pdev) } } - hw->spi_clk = devm_clk_get(&pdev->dev, "spi"); + hw->spi_clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(hw->spi_clk)) { - dev_err(&pdev->dev, "Can't get clocks\n"); ret = PTR_ERR(hw->spi_clk); goto err_out; } - master->max_speed_hz = clk_get_rate(hw->spi_clk); hw->syscon = syscon_regmap_lookup_by_pdevname("syscon.3"); if (IS_ERR(hw->syscon)) { @@ -190,12 +166,6 @@ static int spi_clps711x_probe(struct platform_device *pdev) goto err_out; } - hw->syscon1 = syscon_regmap_lookup_by_pdevname("syscon.1"); - if (IS_ERR(hw->syscon1)) { - ret = PTR_ERR(hw->syscon1); - goto err_out; - } - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); hw->syncio = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(hw->syncio)) { |
