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-rw-r--r--drivers/spi/spi-dw.c1
-rw-r--r--drivers/spi/spi-orion.c2
-rw-r--r--drivers/spi/spi-pl022.c2
-rw-r--r--drivers/spi/spi-pxa2xx-dma.c15
-rw-r--r--drivers/spi/spi-pxa2xx-pci.c101
-rw-r--r--drivers/spi/spi-pxa2xx.c2
-rw-r--r--drivers/spi/spi.c13
-rw-r--r--drivers/spi/spidev.c79
8 files changed, 149 insertions, 66 deletions
diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c
index 729215885250..72e12bad14b9 100644
--- a/drivers/spi/spi-dw.c
+++ b/drivers/spi/spi-dw.c
@@ -669,6 +669,7 @@ int dw_spi_add_host(struct device *dev, struct dw_spi *dws)
master->cleanup = dw_spi_cleanup;
master->transfer_one_message = dw_spi_transfer_one_message;
master->max_speed_hz = dws->max_freq;
+ master->dev.of_node = dev->of_node;
/* Basic HW init */
spi_hw_init(dws);
diff --git a/drivers/spi/spi-orion.c b/drivers/spi/spi-orion.c
index 835cdda6f4f5..c76b7d7879df 100644
--- a/drivers/spi/spi-orion.c
+++ b/drivers/spi/spi-orion.c
@@ -454,7 +454,7 @@ static int orion_spi_probe(struct platform_device *pdev)
spi->master = master;
of_id = of_match_device(orion_spi_of_match_table, &pdev->dev);
- devdata = of_id->data;
+ devdata = (of_id) ? of_id->data : &orion_spi_dev_data;
spi->devdata = devdata;
spi->clk = devm_clk_get(&pdev->dev, NULL);
diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c
index f35f723816ea..fc2dd8441608 100644
--- a/drivers/spi/spi-pl022.c
+++ b/drivers/spi/spi-pl022.c
@@ -1106,7 +1106,7 @@ err_rxdesc:
pl022->sgt_tx.nents, DMA_TO_DEVICE);
err_tx_sgmap:
dma_unmap_sg(rxchan->device->dev, pl022->sgt_rx.sgl,
- pl022->sgt_tx.nents, DMA_FROM_DEVICE);
+ pl022->sgt_rx.nents, DMA_FROM_DEVICE);
err_rx_sgmap:
sg_free_table(&pl022->sgt_tx);
err_alloc_tx_sg:
diff --git a/drivers/spi/spi-pxa2xx-dma.c b/drivers/spi/spi-pxa2xx-dma.c
index c41ff148a2b4..62a9297e96ac 100644
--- a/drivers/spi/spi-pxa2xx-dma.c
+++ b/drivers/spi/spi-pxa2xx-dma.c
@@ -157,7 +157,6 @@ static struct dma_async_tx_descriptor *
pxa2xx_spi_dma_prepare_one(struct driver_data *drv_data,
enum dma_transfer_direction dir)
{
- struct pxa2xx_spi_master *pdata = drv_data->master_info;
struct chip_data *chip = drv_data->cur_chip;
enum dma_slave_buswidth width;
struct dma_slave_config cfg;
@@ -184,7 +183,6 @@ pxa2xx_spi_dma_prepare_one(struct driver_data *drv_data,
cfg.dst_addr = drv_data->ssdr_physical;
cfg.dst_addr_width = width;
cfg.dst_maxburst = chip->dma_burst_size;
- cfg.slave_id = pdata->tx_slave_id;
sgt = &drv_data->tx_sgt;
nents = drv_data->tx_nents;
@@ -193,7 +191,6 @@ pxa2xx_spi_dma_prepare_one(struct driver_data *drv_data,
cfg.src_addr = drv_data->ssdr_physical;
cfg.src_addr_width = width;
cfg.src_maxburst = chip->dma_burst_size;
- cfg.slave_id = pdata->rx_slave_id;
sgt = &drv_data->rx_sgt;
nents = drv_data->rx_nents;
@@ -210,14 +207,6 @@ pxa2xx_spi_dma_prepare_one(struct driver_data *drv_data,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
}
-static bool pxa2xx_spi_dma_filter(struct dma_chan *chan, void *param)
-{
- const struct pxa2xx_spi_master *pdata = param;
-
- return chan->chan_id == pdata->tx_chan_id ||
- chan->chan_id == pdata->rx_chan_id;
-}
-
bool pxa2xx_spi_dma_is_possible(size_t len)
{
return len <= MAX_DMA_LEN;
@@ -321,12 +310,12 @@ int pxa2xx_spi_dma_setup(struct driver_data *drv_data)
return -ENOMEM;
drv_data->tx_chan = dma_request_slave_channel_compat(mask,
- pxa2xx_spi_dma_filter, pdata, dev, "tx");
+ pdata->dma_filter, pdata->tx_param, dev, "tx");
if (!drv_data->tx_chan)
return -ENODEV;
drv_data->rx_chan = dma_request_slave_channel_compat(mask,
- pxa2xx_spi_dma_filter, pdata, dev, "rx");
+ pdata->dma_filter, pdata->rx_param, dev, "rx");
if (!drv_data->rx_chan) {
dma_release_channel(drv_data->tx_chan);
drv_data->tx_chan = NULL;
diff --git a/drivers/spi/spi-pxa2xx-pci.c b/drivers/spi/spi-pxa2xx-pci.c
index 536c863bebf1..6beee8ce2d68 100644
--- a/drivers/spi/spi-pxa2xx-pci.c
+++ b/drivers/spi/spi-pxa2xx-pci.c
@@ -10,42 +10,87 @@
#include <linux/clk.h>
#include <linux/clk-provider.h>
+#include <linux/dmaengine.h>
+#include <linux/platform_data/dma-dw.h>
+
enum {
PORT_CE4100,
PORT_BYT,
+ PORT_BSW0,
+ PORT_BSW1,
+ PORT_BSW2,
};
struct pxa_spi_info {
enum pxa_ssp_type type;
int port_id;
int num_chipselect;
- int tx_slave_id;
- int tx_chan_id;
- int rx_slave_id;
- int rx_chan_id;
unsigned long max_clk_rate;
+
+ /* DMA channel request parameters */
+ void *tx_param;
+ void *rx_param;
};
+static struct dw_dma_slave byt_tx_param = { .dst_id = 0 };
+static struct dw_dma_slave byt_rx_param = { .src_id = 1 };
+
+static struct dw_dma_slave bsw0_tx_param = { .dst_id = 0 };
+static struct dw_dma_slave bsw0_rx_param = { .src_id = 1 };
+static struct dw_dma_slave bsw1_tx_param = { .dst_id = 6 };
+static struct dw_dma_slave bsw1_rx_param = { .src_id = 7 };
+static struct dw_dma_slave bsw2_tx_param = { .dst_id = 8 };
+static struct dw_dma_slave bsw2_rx_param = { .src_id = 9 };
+
+static bool lpss_dma_filter(struct dma_chan *chan, void *param)
+{
+ struct dw_dma_slave *dws = param;
+
+ if (dws->dma_dev != chan->device->dev)
+ return false;
+
+ chan->private = dws;
+ return true;
+}
+
static struct pxa_spi_info spi_info_configs[] = {
[PORT_CE4100] = {
.type = PXA25x_SSP,
.port_id = -1,
.num_chipselect = -1,
- .tx_slave_id = -1,
- .tx_chan_id = -1,
- .rx_slave_id = -1,
- .rx_chan_id = -1,
.max_clk_rate = 3686400,
},
[PORT_BYT] = {
.type = LPSS_SSP,
.port_id = 0,
.num_chipselect = 1,
- .tx_slave_id = 0,
- .tx_chan_id = 0,
- .rx_slave_id = 1,
- .rx_chan_id = 1,
.max_clk_rate = 50000000,
+ .tx_param = &byt_tx_param,
+ .rx_param = &byt_rx_param,
+ },
+ [PORT_BSW0] = {
+ .type = LPSS_SSP,
+ .port_id = 0,
+ .num_chipselect = 1,
+ .max_clk_rate = 50000000,
+ .tx_param = &bsw0_tx_param,
+ .rx_param = &bsw0_rx_param,
+ },
+ [PORT_BSW1] = {
+ .type = LPSS_SSP,
+ .port_id = 1,
+ .num_chipselect = 1,
+ .max_clk_rate = 50000000,
+ .tx_param = &bsw1_tx_param,
+ .rx_param = &bsw1_rx_param,
+ },
+ [PORT_BSW2] = {
+ .type = LPSS_SSP,
+ .port_id = 2,
+ .num_chipselect = 1,
+ .max_clk_rate = 50000000,
+ .tx_param = &bsw2_tx_param,
+ .rx_param = &bsw2_rx_param,
},
};
@@ -59,6 +104,7 @@ static int pxa2xx_spi_pci_probe(struct pci_dev *dev,
struct ssp_device *ssp;
struct pxa_spi_info *c;
char buf[40];
+ struct pci_dev *dma_dev;
ret = pcim_enable_device(dev);
if (ret)
@@ -73,11 +119,29 @@ static int pxa2xx_spi_pci_probe(struct pci_dev *dev,
memset(&spi_pdata, 0, sizeof(spi_pdata));
spi_pdata.num_chipselect = (c->num_chipselect > 0) ?
c->num_chipselect : dev->devfn;
- spi_pdata.tx_slave_id = c->tx_slave_id;
- spi_pdata.tx_chan_id = c->tx_chan_id;
- spi_pdata.rx_slave_id = c->rx_slave_id;
- spi_pdata.rx_chan_id = c->rx_chan_id;
- spi_pdata.enable_dma = c->rx_slave_id >= 0 && c->tx_slave_id >= 0;
+
+ dma_dev = pci_get_slot(dev->bus, PCI_DEVFN(PCI_SLOT(dev->devfn), 0));
+
+ if (c->tx_param) {
+ struct dw_dma_slave *slave = c->tx_param;
+
+ slave->dma_dev = &dma_dev->dev;
+ slave->src_master = 1;
+ slave->dst_master = 0;
+ }
+
+ if (c->rx_param) {
+ struct dw_dma_slave *slave = c->rx_param;
+
+ slave->dma_dev = &dma_dev->dev;
+ slave->src_master = 1;
+ slave->dst_master = 0;
+ }
+
+ spi_pdata.dma_filter = lpss_dma_filter;
+ spi_pdata.tx_param = c->tx_param;
+ spi_pdata.rx_param = c->rx_param;
+ spi_pdata.enable_dma = c->rx_param && c->tx_param;
ssp = &spi_pdata.ssp;
ssp->phys_base = pci_resource_start(dev, 0);
@@ -128,6 +192,9 @@ static void pxa2xx_spi_pci_remove(struct pci_dev *dev)
static const struct pci_device_id pxa2xx_spi_pci_devices[] = {
{ PCI_VDEVICE(INTEL, 0x2e6a), PORT_CE4100 },
{ PCI_VDEVICE(INTEL, 0x0f0e), PORT_BYT },
+ { PCI_VDEVICE(INTEL, 0x228e), PORT_BSW0 },
+ { PCI_VDEVICE(INTEL, 0x2290), PORT_BSW1 },
+ { PCI_VDEVICE(INTEL, 0x22ac), PORT_BSW2 },
{ },
};
MODULE_DEVICE_TABLE(pci, pxa2xx_spi_pci_devices);
diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
index 46f45ca2c694..d8a105f76837 100644
--- a/drivers/spi/spi-pxa2xx.c
+++ b/drivers/spi/spi-pxa2xx.c
@@ -1062,8 +1062,6 @@ pxa2xx_spi_acpi_get_pdata(struct platform_device *pdev)
pdata->num_chipselect = 1;
pdata->enable_dma = true;
- pdata->tx_chan_id = -1;
- pdata->rx_chan_id = -1;
return pdata;
}
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index e19512ffc40e..ebcb33df2eb2 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -35,6 +35,7 @@
#include <linux/spi/spi.h>
#include <linux/of_gpio.h>
#include <linux/pm_runtime.h>
+#include <linux/pm_domain.h>
#include <linux/export.h>
#include <linux/sched/rt.h>
#include <linux/delay.h>
@@ -264,10 +265,12 @@ static int spi_drv_probe(struct device *dev)
if (ret)
return ret;
- acpi_dev_pm_attach(dev, true);
- ret = sdrv->probe(to_spi_device(dev));
- if (ret)
- acpi_dev_pm_detach(dev, true);
+ ret = dev_pm_domain_attach(dev, true);
+ if (ret != -EPROBE_DEFER) {
+ ret = sdrv->probe(to_spi_device(dev));
+ if (ret)
+ dev_pm_domain_detach(dev, true);
+ }
return ret;
}
@@ -278,7 +281,7 @@ static int spi_drv_remove(struct device *dev)
int ret;
ret = sdrv->remove(to_spi_device(dev));
- acpi_dev_pm_detach(dev, true);
+ dev_pm_domain_detach(dev, true);
return ret;
}
diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
index e3bc23bb5883..e50039fb1474 100644
--- a/drivers/spi/spidev.c
+++ b/drivers/spi/spidev.c
@@ -82,10 +82,11 @@ struct spidev_data {
struct spi_device *spi;
struct list_head device_entry;
- /* buffer is NULL unless this device is open (users > 0) */
+ /* TX/RX buffers are NULL unless this device is open (users > 0) */
struct mutex buf_lock;
unsigned users;
- u8 *buffer;
+ u8 *tx_buffer;
+ u8 *rx_buffer;
};
static LIST_HEAD(device_list);
@@ -135,7 +136,7 @@ static inline ssize_t
spidev_sync_write(struct spidev_data *spidev, size_t len)
{
struct spi_transfer t = {
- .tx_buf = spidev->buffer,
+ .tx_buf = spidev->tx_buffer,
.len = len,
};
struct spi_message m;
@@ -149,7 +150,7 @@ static inline ssize_t
spidev_sync_read(struct spidev_data *spidev, size_t len)
{
struct spi_transfer t = {
- .rx_buf = spidev->buffer,
+ .rx_buf = spidev->rx_buffer,
.len = len,
};
struct spi_message m;
@@ -179,7 +180,7 @@ spidev_read(struct file *filp, char __user *buf, size_t count, loff_t *f_pos)
if (status > 0) {
unsigned long missing;
- missing = copy_to_user(buf, spidev->buffer, status);
+ missing = copy_to_user(buf, spidev->rx_buffer, status);
if (missing == status)
status = -EFAULT;
else
@@ -206,7 +207,7 @@ spidev_write(struct file *filp, const char __user *buf,
spidev = filp->private_data;
mutex_lock(&spidev->buf_lock);
- missing = copy_from_user(spidev->buffer, buf, count);
+ missing = copy_from_user(spidev->tx_buffer, buf, count);
if (missing == 0)
status = spidev_sync_write(spidev, count);
else
@@ -224,7 +225,7 @@ static int spidev_message(struct spidev_data *spidev,
struct spi_transfer *k_tmp;
struct spi_ioc_transfer *u_tmp;
unsigned n, total;
- u8 *buf;
+ u8 *tx_buf, *rx_buf;
int status = -EFAULT;
spi_message_init(&msg);
@@ -236,7 +237,8 @@ static int spidev_message(struct spidev_data *spidev,
* We walk the array of user-provided transfers, using each one
* to initialize a kernel version of the same transfer.
*/
- buf = spidev->buffer;
+ tx_buf = spidev->tx_buffer;
+ rx_buf = spidev->rx_buffer;
total = 0;
for (n = n_xfers, k_tmp = k_xfers, u_tmp = u_xfers;
n;
@@ -250,20 +252,21 @@ static int spidev_message(struct spidev_data *spidev,
}
if (u_tmp->rx_buf) {
- k_tmp->rx_buf = buf;
+ k_tmp->rx_buf = rx_buf;
if (!access_ok(VERIFY_WRITE, (u8 __user *)
(uintptr_t) u_tmp->rx_buf,
u_tmp->len))
goto done;
}
if (u_tmp->tx_buf) {
- k_tmp->tx_buf = buf;
- if (copy_from_user(buf, (const u8 __user *)
+ k_tmp->tx_buf = tx_buf;
+ if (copy_from_user(tx_buf, (const u8 __user *)
(uintptr_t) u_tmp->tx_buf,
u_tmp->len))
goto done;
}
- buf += k_tmp->len;
+ tx_buf += k_tmp->len;
+ rx_buf += k_tmp->len;
k_tmp->cs_change = !!u_tmp->cs_change;
k_tmp->tx_nbits = u_tmp->tx_nbits;
@@ -290,17 +293,17 @@ static int spidev_message(struct spidev_data *spidev,
goto done;
/* copy any rx data out of bounce buffer */
- buf = spidev->buffer;
+ rx_buf = spidev->rx_buffer;
for (n = n_xfers, u_tmp = u_xfers; n; n--, u_tmp++) {
if (u_tmp->rx_buf) {
if (__copy_to_user((u8 __user *)
- (uintptr_t) u_tmp->rx_buf, buf,
+ (uintptr_t) u_tmp->rx_buf, rx_buf,
u_tmp->len)) {
status = -EFAULT;
goto done;
}
}
- buf += u_tmp->len;
+ rx_buf += u_tmp->len;
}
status = total;
@@ -508,22 +511,41 @@ static int spidev_open(struct inode *inode, struct file *filp)
break;
}
}
- if (status == 0) {
- if (!spidev->buffer) {
- spidev->buffer = kmalloc(bufsiz, GFP_KERNEL);
- if (!spidev->buffer) {
+
+ if (status) {
+ pr_debug("spidev: nothing for minor %d\n", iminor(inode));
+ goto err_find_dev;
+ }
+
+ if (!spidev->tx_buffer) {
+ spidev->tx_buffer = kmalloc(bufsiz, GFP_KERNEL);
+ if (!spidev->tx_buffer) {
dev_dbg(&spidev->spi->dev, "open/ENOMEM\n");
status = -ENOMEM;
+ goto err_find_dev;
}
}
- if (status == 0) {
- spidev->users++;
- filp->private_data = spidev;
- nonseekable_open(inode, filp);
+
+ if (!spidev->rx_buffer) {
+ spidev->rx_buffer = kmalloc(bufsiz, GFP_KERNEL);
+ if (!spidev->rx_buffer) {
+ dev_dbg(&spidev->spi->dev, "open/ENOMEM\n");
+ status = -ENOMEM;
+ goto err_alloc_rx_buf;
}
- } else
- pr_debug("spidev: nothing for minor %d\n", iminor(inode));
+ }
+
+ spidev->users++;
+ filp->private_data = spidev;
+ nonseekable_open(inode, filp);
+
+ mutex_unlock(&device_list_lock);
+ return 0;
+err_alloc_rx_buf:
+ kfree(spidev->tx_buffer);
+ spidev->tx_buffer = NULL;
+err_find_dev:
mutex_unlock(&device_list_lock);
return status;
}
@@ -542,8 +564,11 @@ static int spidev_release(struct inode *inode, struct file *filp)
if (!spidev->users) {
int dofree;
- kfree(spidev->buffer);
- spidev->buffer = NULL;
+ kfree(spidev->tx_buffer);
+ spidev->tx_buffer = NULL;
+
+ kfree(spidev->rx_buffer);
+ spidev->rx_buffer = NULL;
/* ... after we unbound from the underlying device? */
spin_lock_irq(&spidev->spi_lock);
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