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-rw-r--r--drivers/spi/Kconfig4
-rw-r--r--drivers/spi/spi-jcore.c11
-rw-r--r--drivers/spi/spi-orion.c65
-rw-r--r--drivers/spi/spi-pxa2xx-dma.c4
-rw-r--r--drivers/spi/spi-pxa2xx.c54
-rw-r--r--drivers/spi/spi-pxa2xx.h2
-rw-r--r--drivers/spi/spi-rspi.c4
7 files changed, 96 insertions, 48 deletions
diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index 603783976b81..6fb0347a24f2 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -72,10 +72,10 @@ config SPI_ARMADA_3700
config SPI_ATMEL
tristate "Atmel SPI Controller"
depends on HAS_DMA
- depends on (ARCH_AT91 || AVR32 || COMPILE_TEST)
+ depends on (ARCH_AT91 || COMPILE_TEST)
help
This selects a driver for the Atmel SPI Controller, present on
- many AT32 (AVR32) and AT91 (ARM) chips.
+ many AT91 (ARM) chips.
config SPI_AU1550
tristate "Au1550/Au1200/Au1300 SPI Controller"
diff --git a/drivers/spi/spi-jcore.c b/drivers/spi/spi-jcore.c
index dafed6280df3..702fe573a47b 100644
--- a/drivers/spi/spi-jcore.c
+++ b/drivers/spi/spi-jcore.c
@@ -184,10 +184,11 @@ static int jcore_spi_probe(struct platform_device *pdev)
*/
clock_freq = 50000000;
clk = devm_clk_get(&pdev->dev, "ref_clk");
- if (!IS_ERR_OR_NULL(clk)) {
- if (clk_enable(clk) == 0)
+ if (!IS_ERR(clk)) {
+ if (clk_prepare_enable(clk) == 0) {
clock_freq = clk_get_rate(clk);
- else
+ clk_disable_unprepare(clk);
+ } else
dev_warn(&pdev->dev, "could not enable ref_clk\n");
}
hw->clock_freq = clock_freq;
@@ -198,10 +199,8 @@ static int jcore_spi_probe(struct platform_device *pdev)
/* Register our spi controller */
err = devm_spi_register_master(&pdev->dev, master);
- if (err) {
- clk_disable(clk);
+ if (err)
goto exit;
- }
return 0;
diff --git a/drivers/spi/spi-orion.c b/drivers/spi/spi-orion.c
index deca63e82ff6..d01a6adc726e 100644
--- a/drivers/spi/spi-orion.c
+++ b/drivers/spi/spi-orion.c
@@ -90,14 +90,19 @@ struct orion_direct_acc {
u32 size;
};
+struct orion_child_options {
+ struct orion_direct_acc direct_access;
+};
+
struct orion_spi {
struct spi_master *master;
void __iomem *base;
struct clk *clk;
struct clk *axi_clk;
const struct orion_spi_dev *devdata;
+ int unused_hw_gpio;
- struct orion_direct_acc direct_access[ORION_NUM_CHIPSELECTS];
+ struct orion_child_options child[ORION_NUM_CHIPSELECTS];
};
static inline void __iomem *spi_reg(struct orion_spi *orion_spi, u32 reg)
@@ -324,13 +329,13 @@ static void orion_spi_set_cs(struct spi_device *spi, bool enable)
struct orion_spi *orion_spi;
int cs;
+ orion_spi = spi_master_get_devdata(spi->master);
+
if (gpio_is_valid(spi->cs_gpio))
- cs = 0;
+ cs = orion_spi->unused_hw_gpio;
else
cs = spi->chip_select;
- orion_spi = spi_master_get_devdata(spi->master);
-
orion_spi_clrbits(orion_spi, ORION_SPI_IF_CTRL_REG, ORION_SPI_CS_MASK);
orion_spi_setbits(orion_spi, ORION_SPI_IF_CTRL_REG,
ORION_SPI_CS(cs));
@@ -435,7 +440,7 @@ orion_spi_write_read(struct spi_device *spi, struct spi_transfer *xfer)
* Use SPI direct write mode if base address is available. Otherwise
* fall back to PIO mode for this transfer.
*/
- if ((orion_spi->direct_access[cs].vaddr) && (xfer->tx_buf) &&
+ if ((orion_spi->child[cs].direct_access.vaddr) && (xfer->tx_buf) &&
(word_len == 8)) {
unsigned int cnt = count / 4;
unsigned int rem = count % 4;
@@ -444,12 +449,12 @@ orion_spi_write_read(struct spi_device *spi, struct spi_transfer *xfer)
* Send the TX-data to the SPI device via the direct
* mapped address window
*/
- iowrite32_rep(orion_spi->direct_access[cs].vaddr,
+ iowrite32_rep(orion_spi->child[cs].direct_access.vaddr,
xfer->tx_buf, cnt);
if (rem) {
u32 *buf = (u32 *)xfer->tx_buf;
- iowrite8_rep(orion_spi->direct_access[cs].vaddr,
+ iowrite8_rep(orion_spi->child[cs].direct_access.vaddr,
&buf[cnt], rem);
}
@@ -498,6 +503,9 @@ static int orion_spi_transfer_one(struct spi_master *master,
static int orion_spi_setup(struct spi_device *spi)
{
+ if (gpio_is_valid(spi->cs_gpio)) {
+ gpio_direction_output(spi->cs_gpio, !(spi->mode & SPI_CS_HIGH));
+ }
return orion_spi_setup_transfer(spi, NULL);
}
@@ -620,6 +628,7 @@ static int orion_spi_probe(struct platform_device *pdev)
spi = spi_master_get_devdata(master);
spi->master = master;
+ spi->unused_hw_gpio = -1;
of_id = of_match_device(orion_spi_of_match_table, &pdev->dev);
devdata = (of_id) ? of_id->data : &orion_spi_dev_data;
@@ -702,14 +711,14 @@ static int orion_spi_probe(struct platform_device *pdev)
* This needs to get extended for the direct SPI-NOR / SPI-NAND
* support, once this gets implemented.
*/
- spi->direct_access[cs].vaddr = devm_ioremap(&pdev->dev,
+ spi->child[cs].direct_access.vaddr = devm_ioremap(&pdev->dev,
r->start,
PAGE_SIZE);
- if (!spi->direct_access[cs].vaddr) {
+ if (!spi->child[cs].direct_access.vaddr) {
status = -ENOMEM;
goto out_rel_axi_clk;
}
- spi->direct_access[cs].size = PAGE_SIZE;
+ spi->child[cs].direct_access.size = PAGE_SIZE;
dev_info(&pdev->dev, "CS%d configured for direct access\n", cs);
}
@@ -731,8 +740,44 @@ static int orion_spi_probe(struct platform_device *pdev)
if (status < 0)
goto out_rel_pm;
+ if (master->cs_gpios) {
+ int i;
+ for (i = 0; i < master->num_chipselect; ++i) {
+ char *gpio_name;
+
+ if (!gpio_is_valid(master->cs_gpios[i])) {
+ continue;
+ }
+
+ gpio_name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
+ "%s-CS%d", dev_name(&pdev->dev), i);
+ if (!gpio_name) {
+ status = -ENOMEM;
+ goto out_rel_master;
+ }
+
+ status = devm_gpio_request(&pdev->dev,
+ master->cs_gpios[i], gpio_name);
+ if (status) {
+ dev_err(&pdev->dev,
+ "Can't request GPIO for CS %d\n",
+ master->cs_gpios[i]);
+ goto out_rel_master;
+ }
+ if (spi->unused_hw_gpio == -1) {
+ dev_info(&pdev->dev,
+ "Selected unused HW CS#%d for any GPIO CSes\n",
+ i);
+ spi->unused_hw_gpio = i;
+ }
+ }
+ }
+
+
return status;
+out_rel_master:
+ spi_unregister_master(master);
out_rel_pm:
pm_runtime_disable(&pdev->dev);
out_rel_axi_clk:
diff --git a/drivers/spi/spi-pxa2xx-dma.c b/drivers/spi/spi-pxa2xx-dma.c
index 04f3eecf5cf3..3d7f66080c57 100644
--- a/drivers/spi/spi-pxa2xx-dma.c
+++ b/drivers/spi/spi-pxa2xx-dma.c
@@ -191,7 +191,7 @@ int pxa2xx_spi_dma_setup(struct driver_data *drv_data)
{
struct pxa2xx_spi_master *pdata = drv_data->master_info;
struct device *dev = &drv_data->pdev->dev;
- struct spi_master *master = drv_data->master;
+ struct spi_controller *master = drv_data->master;
dma_cap_mask_t mask;
dma_cap_zero(mask);
@@ -215,7 +215,7 @@ int pxa2xx_spi_dma_setup(struct driver_data *drv_data)
void pxa2xx_spi_dma_release(struct driver_data *drv_data)
{
- struct spi_master *master = drv_data->master;
+ struct spi_controller *master = drv_data->master;
if (master->dma_rx) {
dmaengine_terminate_sync(master->dma_rx);
diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
index 56254b35875d..82dcb88fcfba 100644
--- a/drivers/spi/spi-pxa2xx.c
+++ b/drivers/spi/spi-pxa2xx.c
@@ -415,10 +415,17 @@ static void cs_deassert(struct driver_data *drv_data)
{
struct chip_data *chip =
spi_get_ctldata(drv_data->master->cur_msg->spi);
+ unsigned long timeout;
if (drv_data->ssp_type == CE4100_SSP)
return;
+ /* Wait until SSP becomes idle before deasserting the CS */
+ timeout = jiffies + msecs_to_jiffies(10);
+ while (pxa2xx_spi_read(drv_data, SSSR) & SSSR_BSY &&
+ !time_after(jiffies, timeout))
+ cpu_relax();
+
if (chip->cs_control) {
chip->cs_control(PXA2XX_CS_DEASSERT);
return;
@@ -563,7 +570,6 @@ static void giveback(struct driver_data *drv_data)
{
struct spi_transfer* last_transfer;
struct spi_message *msg;
- unsigned long timeout;
msg = drv_data->master->cur_msg;
drv_data->cur_transfer = NULL;
@@ -575,12 +581,6 @@ static void giveback(struct driver_data *drv_data)
if (last_transfer->delay_usecs)
udelay(last_transfer->delay_usecs);
- /* Wait until SSP becomes idle before deasserting the CS */
- timeout = jiffies + msecs_to_jiffies(10);
- while (pxa2xx_spi_read(drv_data, SSSR) & SSSR_BSY &&
- !time_after(jiffies, timeout))
- cpu_relax();
-
/* Drop chip select UNLESS cs_change is true or we are returning
* a message with an error, or next message is for another chip
*/
@@ -962,7 +962,7 @@ static unsigned int pxa2xx_ssp_get_clk_div(struct driver_data *drv_data,
return clk_div << 8;
}
-static bool pxa2xx_spi_can_dma(struct spi_master *master,
+static bool pxa2xx_spi_can_dma(struct spi_controller *master,
struct spi_device *spi,
struct spi_transfer *xfer)
{
@@ -976,7 +976,7 @@ static bool pxa2xx_spi_can_dma(struct spi_master *master,
static void pump_transfers(unsigned long data)
{
struct driver_data *drv_data = (struct driver_data *)data;
- struct spi_master *master = drv_data->master;
+ struct spi_controller *master = drv_data->master;
struct spi_message *message = master->cur_msg;
struct chip_data *chip = spi_get_ctldata(message->spi);
u32 dma_thresh = chip->dma_threshold;
@@ -1182,10 +1182,10 @@ static void pump_transfers(unsigned long data)
pxa2xx_spi_write(drv_data, SSCR1, cr1);
}
-static int pxa2xx_spi_transfer_one_message(struct spi_master *master,
+static int pxa2xx_spi_transfer_one_message(struct spi_controller *master,
struct spi_message *msg)
{
- struct driver_data *drv_data = spi_master_get_devdata(master);
+ struct driver_data *drv_data = spi_controller_get_devdata(master);
/* Initial message state*/
msg->state = START_STATE;
@@ -1198,9 +1198,9 @@ static int pxa2xx_spi_transfer_one_message(struct spi_master *master,
return 0;
}
-static int pxa2xx_spi_unprepare_transfer(struct spi_master *master)
+static int pxa2xx_spi_unprepare_transfer(struct spi_controller *master)
{
- struct driver_data *drv_data = spi_master_get_devdata(master);
+ struct driver_data *drv_data = spi_controller_get_devdata(master);
/* Disable the SSP now */
pxa2xx_spi_write(drv_data, SSCR0,
@@ -1212,7 +1212,8 @@ static int pxa2xx_spi_unprepare_transfer(struct spi_master *master)
static int setup_cs(struct spi_device *spi, struct chip_data *chip,
struct pxa2xx_spi_chip *chip_info)
{
- struct driver_data *drv_data = spi_master_get_devdata(spi->master);
+ struct driver_data *drv_data =
+ spi_controller_get_devdata(spi->controller);
struct gpio_desc *gpiod;
int err = 0;
@@ -1270,7 +1271,8 @@ static int setup(struct spi_device *spi)
struct pxa2xx_spi_chip *chip_info;
struct chip_data *chip;
const struct lpss_config *config;
- struct driver_data *drv_data = spi_master_get_devdata(spi->master);
+ struct driver_data *drv_data =
+ spi_controller_get_devdata(spi->controller);
uint tx_thres, tx_hi_thres, rx_thres;
switch (drv_data->ssp_type) {
@@ -1410,7 +1412,8 @@ static int setup(struct spi_device *spi)
static void cleanup(struct spi_device *spi)
{
struct chip_data *chip = spi_get_ctldata(spi);
- struct driver_data *drv_data = spi_master_get_devdata(spi->master);
+ struct driver_data *drv_data =
+ spi_controller_get_devdata(spi->controller);
if (!chip)
return;
@@ -1575,9 +1578,10 @@ pxa2xx_spi_init_pdata(struct platform_device *pdev)
}
#endif
-static int pxa2xx_spi_fw_translate_cs(struct spi_master *master, unsigned cs)
+static int pxa2xx_spi_fw_translate_cs(struct spi_controller *master,
+ unsigned int cs)
{
- struct driver_data *drv_data = spi_master_get_devdata(master);
+ struct driver_data *drv_data = spi_controller_get_devdata(master);
if (has_acpi_companion(&drv_data->pdev->dev)) {
switch (drv_data->ssp_type) {
@@ -1602,7 +1606,7 @@ static int pxa2xx_spi_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct pxa2xx_spi_master *platform_info;
- struct spi_master *master;
+ struct spi_controller *master;
struct driver_data *drv_data;
struct ssp_device *ssp;
const struct lpss_config *config;
@@ -1633,7 +1637,7 @@ static int pxa2xx_spi_probe(struct platform_device *pdev)
pxa_ssp_free(ssp);
return -ENOMEM;
}
- drv_data = spi_master_get_devdata(master);
+ drv_data = spi_controller_get_devdata(master);
drv_data->master = master;
drv_data->master_info = platform_info;
drv_data->pdev = pdev;
@@ -1651,7 +1655,7 @@ static int pxa2xx_spi_probe(struct platform_device *pdev)
master->unprepare_transfer_hardware = pxa2xx_spi_unprepare_transfer;
master->fw_translate_cs = pxa2xx_spi_fw_translate_cs;
master->auto_runtime_pm = true;
- master->flags = SPI_MASTER_MUST_RX | SPI_MASTER_MUST_TX;
+ master->flags = SPI_CONTROLLER_MUST_RX | SPI_CONTROLLER_MUST_TX;
drv_data->ssp_type = ssp->type;
@@ -1793,7 +1797,7 @@ static int pxa2xx_spi_probe(struct platform_device *pdev)
/* Register with the SPI framework */
platform_set_drvdata(pdev, drv_data);
- status = devm_spi_register_master(&pdev->dev, master);
+ status = devm_spi_register_controller(&pdev->dev, master);
if (status != 0) {
dev_err(&pdev->dev, "problem registering spi master\n");
goto out_error_clock_enabled;
@@ -1809,7 +1813,7 @@ out_error_clock_enabled:
free_irq(ssp->irq, drv_data);
out_error_master_alloc:
- spi_master_put(master);
+ spi_controller_put(master);
pxa_ssp_free(ssp);
return status;
}
@@ -1860,7 +1864,7 @@ static int pxa2xx_spi_suspend(struct device *dev)
struct ssp_device *ssp = drv_data->ssp;
int status;
- status = spi_master_suspend(drv_data->master);
+ status = spi_controller_suspend(drv_data->master);
if (status != 0)
return status;
pxa2xx_spi_write(drv_data, SSCR0, 0);
@@ -1886,7 +1890,7 @@ static int pxa2xx_spi_resume(struct device *dev)
lpss_ssp_setup(drv_data);
/* Start the queue running */
- status = spi_master_resume(drv_data->master);
+ status = spi_controller_resume(drv_data->master);
if (status != 0) {
dev_err(dev, "problem starting queue (%d)\n", status);
return status;
diff --git a/drivers/spi/spi-pxa2xx.h b/drivers/spi/spi-pxa2xx.h
index 94f7b0713281..513ec6c6e25b 100644
--- a/drivers/spi/spi-pxa2xx.h
+++ b/drivers/spi/spi-pxa2xx.h
@@ -31,7 +31,7 @@ struct driver_data {
/* SPI framework hookup */
enum pxa_ssp_type ssp_type;
- struct spi_master *master;
+ struct spi_controller *master;
/* PXA hookup */
struct pxa2xx_spi_master *master_info;
diff --git a/drivers/spi/spi-rspi.c b/drivers/spi/spi-rspi.c
index 0835a8d88fb8..95dc4d78618d 100644
--- a/drivers/spi/spi-rspi.c
+++ b/drivers/spi/spi-rspi.c
@@ -535,7 +535,7 @@ static int rspi_dma_transfer(struct rspi_data *rspi, struct sg_table *tx,
/* First prepare and submit the DMA request(s), as this may fail */
if (rx) {
desc_rx = dmaengine_prep_slave_sg(rspi->master->dma_rx,
- rx->sgl, rx->nents, DMA_FROM_DEVICE,
+ rx->sgl, rx->nents, DMA_DEV_TO_MEM,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!desc_rx) {
ret = -EAGAIN;
@@ -555,7 +555,7 @@ static int rspi_dma_transfer(struct rspi_data *rspi, struct sg_table *tx,
if (tx) {
desc_tx = dmaengine_prep_slave_sg(rspi->master->dma_tx,
- tx->sgl, tx->nents, DMA_TO_DEVICE,
+ tx->sgl, tx->nents, DMA_MEM_TO_DEV,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!desc_tx) {
ret = -EAGAIN;
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-03 14:28:57 +0000