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-rw-r--r--drivers/spi/atmel_spi.c8
-rw-r--r--drivers/spi/mpc52xx_psc_spi.c2
-rw-r--r--drivers/spi/omap2_mcspi.c6
-rw-r--r--drivers/spi/omap_uwire.c21
-rw-r--r--drivers/spi/orion_spi.c2
-rw-r--r--drivers/spi/pxa2xx_spi.c6
-rw-r--r--drivers/spi/spi_bfin5xx.c4
-rw-r--r--drivers/spi/spi_gpio.c21
-rw-r--r--drivers/spi/spi_imx.c5
-rw-r--r--drivers/spi/spi_mpc83xx.c368
-rw-r--r--drivers/spi/spi_txx9.c3
-rw-r--r--drivers/spi/xilinx_spi.c9
12 files changed, 360 insertions, 95 deletions
diff --git a/drivers/spi/atmel_spi.c b/drivers/spi/atmel_spi.c
index 56ff3e6864ea..12e443cc4ac9 100644
--- a/drivers/spi/atmel_spi.c
+++ b/drivers/spi/atmel_spi.c
@@ -322,7 +322,7 @@ static void atmel_spi_next_message(struct spi_master *master)
spi = msg->spi;
dev_dbg(master->dev.parent, "start message %p for %s\n",
- msg, spi->dev.bus_id);
+ msg, dev_name(&spi->dev));
/* select chip if it's not still active */
if (as->stay) {
@@ -627,7 +627,7 @@ static int atmel_spi_setup(struct spi_device *spi)
if (!asd)
return -ENOMEM;
- ret = gpio_request(npcs_pin, spi->dev.bus_id);
+ ret = gpio_request(npcs_pin, dev_name(&spi->dev));
if (ret) {
kfree(asd);
return ret;
@@ -668,7 +668,7 @@ static int atmel_spi_transfer(struct spi_device *spi, struct spi_message *msg)
as = spi_master_get_devdata(spi->master);
dev_dbg(controller, "new message %p submitted for %s\n",
- msg, spi->dev.bus_id);
+ msg, dev_name(&spi->dev));
if (unlikely(list_empty(&msg->transfers)))
return -EINVAL;
@@ -803,7 +803,7 @@ static int __init atmel_spi_probe(struct platform_device *pdev)
as->clk = clk;
ret = request_irq(irq, atmel_spi_interrupt, 0,
- pdev->dev.bus_id, master);
+ dev_name(&pdev->dev), master);
if (ret)
goto out_unmap_regs;
diff --git a/drivers/spi/mpc52xx_psc_spi.c b/drivers/spi/mpc52xx_psc_spi.c
index 3b97803e1d11..68c77a911595 100644
--- a/drivers/spi/mpc52xx_psc_spi.c
+++ b/drivers/spi/mpc52xx_psc_spi.c
@@ -429,7 +429,7 @@ static int __init mpc52xx_psc_spi_do_probe(struct device *dev, u32 regaddr,
INIT_LIST_HEAD(&mps->queue);
mps->workqueue = create_singlethread_workqueue(
- master->dev.parent->bus_id);
+ dev_name(master->dev.parent));
if (mps->workqueue == NULL) {
ret = -EBUSY;
goto free_irq;
diff --git a/drivers/spi/omap2_mcspi.c b/drivers/spi/omap2_mcspi.c
index 454a2712e629..d6d0c5d241ce 100644
--- a/drivers/spi/omap2_mcspi.c
+++ b/drivers/spi/omap2_mcspi.c
@@ -1003,7 +1003,7 @@ static int __init omap2_mcspi_probe(struct platform_device *pdev)
goto err1;
}
if (!request_mem_region(r->start, (r->end - r->start) + 1,
- pdev->dev.bus_id)) {
+ dev_name(&pdev->dev))) {
status = -EBUSY;
goto err1;
}
@@ -1021,13 +1021,13 @@ static int __init omap2_mcspi_probe(struct platform_device *pdev)
spin_lock_init(&mcspi->lock);
INIT_LIST_HEAD(&mcspi->msg_queue);
- mcspi->ick = clk_get(&pdev->dev, "mcspi_ick");
+ mcspi->ick = clk_get(&pdev->dev, "ick");
if (IS_ERR(mcspi->ick)) {
dev_dbg(&pdev->dev, "can't get mcspi_ick\n");
status = PTR_ERR(mcspi->ick);
goto err1a;
}
- mcspi->fck = clk_get(&pdev->dev, "mcspi_fck");
+ mcspi->fck = clk_get(&pdev->dev, "fck");
if (IS_ERR(mcspi->fck)) {
dev_dbg(&pdev->dev, "can't get mcspi_fck\n");
status = PTR_ERR(mcspi->fck);
diff --git a/drivers/spi/omap_uwire.c b/drivers/spi/omap_uwire.c
index bab6ff061e91..fe8b9ac0ccef 100644
--- a/drivers/spi/omap_uwire.c
+++ b/drivers/spi/omap_uwire.c
@@ -245,7 +245,7 @@ static int uwire_txrx(struct spi_device *spi, struct spi_transfer *t)
#ifdef VERBOSE
pr_debug("%s: write-%d =%04x\n",
- spi->dev.bus_id, bits, val);
+ dev_name(&spi->dev), bits, val);
#endif
if (wait_uwire_csr_flag(CSRB, 0, 0))
goto eio;
@@ -305,7 +305,7 @@ static int uwire_txrx(struct spi_device *spi, struct spi_transfer *t)
status += bytes;
#ifdef VERBOSE
pr_debug("%s: read-%d =%04x\n",
- spi->dev.bus_id, bits, val);
+ dev_name(&spi->dev), bits, val);
#endif
}
@@ -331,7 +331,7 @@ static int uwire_setup_transfer(struct spi_device *spi, struct spi_transfer *t)
uwire = spi_master_get_devdata(spi->master);
if (spi->chip_select > 3) {
- pr_debug("%s: cs%d?\n", spi->dev.bus_id, spi->chip_select);
+ pr_debug("%s: cs%d?\n", dev_name(&spi->dev), spi->chip_select);
status = -ENODEV;
goto done;
}
@@ -343,7 +343,7 @@ static int uwire_setup_transfer(struct spi_device *spi, struct spi_transfer *t)
bits = 8;
if (bits > 16) {
- pr_debug("%s: wordsize %d?\n", spi->dev.bus_id, bits);
+ pr_debug("%s: wordsize %d?\n", dev_name(&spi->dev), bits);
status = -ENODEV;
goto done;
}
@@ -378,7 +378,7 @@ static int uwire_setup_transfer(struct spi_device *spi, struct spi_transfer *t)
hz = t->speed_hz;
if (!hz) {
- pr_debug("%s: zero speed?\n", spi->dev.bus_id);
+ pr_debug("%s: zero speed?\n", dev_name(&spi->dev));
status = -EINVAL;
goto done;
}
@@ -406,7 +406,7 @@ static int uwire_setup_transfer(struct spi_device *spi, struct spi_transfer *t)
}
if (div1_idx == 4) {
pr_debug("%s: lowest clock %ld, need %d\n",
- spi->dev.bus_id, rate / 10 / 8, hz);
+ dev_name(&spi->dev), rate / 10 / 8, hz);
status = -EDOM;
goto done;
}
@@ -506,11 +506,12 @@ static int __init uwire_probe(struct platform_device *pdev)
dev_set_drvdata(&pdev->dev, uwire);
- uwire->ck = clk_get(&pdev->dev, "armxor_ck");
- if (!uwire->ck || IS_ERR(uwire->ck)) {
- dev_dbg(&pdev->dev, "no mpu_xor_clk ?\n");
+ uwire->ck = clk_get(&pdev->dev, "fck");
+ if (IS_ERR(uwire->ck)) {
+ status = PTR_ERR(uwire->ck);
+ dev_dbg(&pdev->dev, "no functional clock?\n");
spi_master_put(master);
- return -ENODEV;
+ return status;
}
clk_enable(uwire->ck);
diff --git a/drivers/spi/orion_spi.c b/drivers/spi/orion_spi.c
index 014becb7d530..c8b0babdc2a6 100644
--- a/drivers/spi/orion_spi.c
+++ b/drivers/spi/orion_spi.c
@@ -496,7 +496,7 @@ static int __init orion_spi_probe(struct platform_device *pdev)
}
if (!request_mem_region(r->start, (r->end - r->start) + 1,
- pdev->dev.bus_id)) {
+ dev_name(&pdev->dev))) {
status = -EBUSY;
goto out;
}
diff --git a/drivers/spi/pxa2xx_spi.c b/drivers/spi/pxa2xx_spi.c
index d0fc4ca2f656..33fcef3150d4 100644
--- a/drivers/spi/pxa2xx_spi.c
+++ b/drivers/spi/pxa2xx_spi.c
@@ -34,8 +34,6 @@
#include <asm/delay.h>
#include <mach/dma.h>
-#include <mach/hardware.h>
-#include <mach/pxa-regs.h>
#include <mach/regs-ssp.h>
#include <mach/ssp.h>
#include <mach/pxa2xx_spi.h>
@@ -1333,7 +1331,7 @@ static int __init init_queue(struct driver_data *drv_data)
INIT_WORK(&drv_data->pump_messages, pump_messages);
drv_data->workqueue = create_singlethread_workqueue(
- drv_data->master->dev.parent->bus_id);
+ dev_name(drv_data->master->dev.parent));
if (drv_data->workqueue == NULL)
return -EBUSY;
@@ -1462,7 +1460,7 @@ static int __init pxa2xx_spi_probe(struct platform_device *pdev)
drv_data->mask_sr = SSSR_TINT | SSSR_RFS | SSSR_TFS | SSSR_ROR;
}
- status = request_irq(ssp->irq, ssp_int, 0, dev->bus_id, drv_data);
+ status = request_irq(ssp->irq, ssp_int, 0, dev_name(dev), drv_data);
if (status < 0) {
dev_err(&pdev->dev, "cannot get IRQ %d\n", ssp->irq);
goto out_error_master_alloc;
diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c
index 7fea3cf4588a..3410b0c55ed2 100644
--- a/drivers/spi/spi_bfin5xx.c
+++ b/drivers/spi/spi_bfin5xx.c
@@ -1160,8 +1160,8 @@ static inline int init_queue(struct driver_data *drv_data)
/* init messages workqueue */
INIT_WORK(&drv_data->pump_messages, pump_messages);
- drv_data->workqueue =
- create_singlethread_workqueue(drv_data->master->dev.parent->bus_id);
+ drv_data->workqueue = create_singlethread_workqueue(
+ dev_name(drv_data->master->dev.parent));
if (drv_data->workqueue == NULL)
return -EBUSY;
diff --git a/drivers/spi/spi_gpio.c b/drivers/spi/spi_gpio.c
index f5ed9721aabb..26bd03e61855 100644
--- a/drivers/spi/spi_gpio.c
+++ b/drivers/spi/spi_gpio.c
@@ -178,8 +178,10 @@ static void spi_gpio_chipselect(struct spi_device *spi, int is_active)
if (is_active)
setsck(spi, spi->mode & SPI_CPOL);
- /* SPI is normally active-low */
- gpio_set_value(cs, (spi->mode & SPI_CS_HIGH) ? is_active : !is_active);
+ if (cs != SPI_GPIO_NO_CHIPSELECT) {
+ /* SPI is normally active-low */
+ gpio_set_value(cs, (spi->mode & SPI_CS_HIGH) ? is_active : !is_active);
+ }
}
static int spi_gpio_setup(struct spi_device *spi)
@@ -191,15 +193,17 @@ static int spi_gpio_setup(struct spi_device *spi)
return -EINVAL;
if (!spi->controller_state) {
- status = gpio_request(cs, spi->dev.bus_id);
- if (status)
- return status;
- status = gpio_direction_output(cs, spi->mode & SPI_CS_HIGH);
+ if (cs != SPI_GPIO_NO_CHIPSELECT) {
+ status = gpio_request(cs, dev_name(&spi->dev));
+ if (status)
+ return status;
+ status = gpio_direction_output(cs, spi->mode & SPI_CS_HIGH);
+ }
}
if (!status)
status = spi_bitbang_setup(spi);
if (status) {
- if (!spi->controller_state)
+ if (!spi->controller_state && cs != SPI_GPIO_NO_CHIPSELECT)
gpio_free(cs);
}
return status;
@@ -209,7 +213,8 @@ static void spi_gpio_cleanup(struct spi_device *spi)
{
unsigned long cs = (unsigned long) spi->controller_data;
- gpio_free(cs);
+ if (cs != SPI_GPIO_NO_CHIPSELECT)
+ gpio_free(cs);
spi_bitbang_cleanup(spi);
}
diff --git a/drivers/spi/spi_imx.c b/drivers/spi/spi_imx.c
index 269a55ec52ef..0480d8bb19d3 100644
--- a/drivers/spi/spi_imx.c
+++ b/drivers/spi/spi_imx.c
@@ -1381,7 +1381,7 @@ static int __init init_queue(struct driver_data *drv_data)
INIT_WORK(&drv_data->work, pump_messages);
drv_data->workqueue = create_singlethread_workqueue(
- drv_data->master->dev.parent->bus_id);
+ dev_name(drv_data->master->dev.parent));
if (drv_data->workqueue == NULL)
return -EBUSY;
@@ -1525,7 +1525,8 @@ static int __init spi_imx_probe(struct platform_device *pdev)
status = -ENODEV;
goto err_no_irqres;
}
- status = request_irq(irq, spi_int, IRQF_DISABLED, dev->bus_id, drv_data);
+ status = request_irq(irq, spi_int, IRQF_DISABLED,
+ dev_name(dev), drv_data);
if (status < 0) {
dev_err(&pdev->dev, "probe - cannot get IRQ (%d)\n", status);
goto err_no_irqres;
diff --git a/drivers/spi/spi_mpc83xx.c b/drivers/spi/spi_mpc83xx.c
index ac0e3e4b3c54..f4573a96af24 100644
--- a/drivers/spi/spi_mpc83xx.c
+++ b/drivers/spi/spi_mpc83xx.c
@@ -14,6 +14,8 @@
#include <linux/init.h>
#include <linux/types.h>
#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/err.h>
#include <linux/completion.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
@@ -23,7 +25,13 @@
#include <linux/spi/spi_bitbang.h>
#include <linux/platform_device.h>
#include <linux/fsl_devices.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/gpio.h>
+#include <linux/of_gpio.h>
+#include <linux/of_spi.h>
+#include <sysdev/fsl_soc.h>
#include <asm/irq.h>
#include <asm/io.h>
@@ -79,7 +87,7 @@ struct mpc83xx_spi {
u32(*get_tx) (struct mpc83xx_spi *);
unsigned int count;
- int irq;
+ unsigned int irq;
unsigned nsecs; /* (clock cycle time)/2 */
@@ -89,9 +97,6 @@ struct mpc83xx_spi {
bool qe_mode;
- void (*activate_cs) (u8 cs, u8 polarity);
- void (*deactivate_cs) (u8 cs, u8 polarity);
-
u8 busy;
struct workqueue_struct *workqueue;
@@ -123,6 +128,7 @@ static inline u32 mpc83xx_spi_read_reg(__be32 __iomem * reg)
}
#define MPC83XX_SPI_RX_BUF(type) \
+static \
void mpc83xx_spi_rx_buf_##type(u32 data, struct mpc83xx_spi *mpc83xx_spi) \
{ \
type * rx = mpc83xx_spi->rx; \
@@ -131,6 +137,7 @@ void mpc83xx_spi_rx_buf_##type(u32 data, struct mpc83xx_spi *mpc83xx_spi) \
}
#define MPC83XX_SPI_TX_BUF(type) \
+static \
u32 mpc83xx_spi_tx_buf_##type(struct mpc83xx_spi *mpc83xx_spi) \
{ \
u32 data; \
@@ -151,15 +158,14 @@ MPC83XX_SPI_TX_BUF(u32)
static void mpc83xx_spi_chipselect(struct spi_device *spi, int value)
{
- struct mpc83xx_spi *mpc83xx_spi;
- u8 pol = spi->mode & SPI_CS_HIGH ? 1 : 0;
+ struct mpc83xx_spi *mpc83xx_spi = spi_master_get_devdata(spi->master);
+ struct fsl_spi_platform_data *pdata = spi->dev.parent->platform_data;
+ bool pol = spi->mode & SPI_CS_HIGH;
struct spi_mpc83xx_cs *cs = spi->controller_state;
- mpc83xx_spi = spi_master_get_devdata(spi->master);
-
if (value == BITBANG_CS_INACTIVE) {
- if (mpc83xx_spi->deactivate_cs)
- mpc83xx_spi->deactivate_cs(spi->chip_select, pol);
+ if (pdata->cs_control)
+ pdata->cs_control(spi, !pol);
}
if (value == BITBANG_CS_ACTIVE) {
@@ -172,7 +178,7 @@ static void mpc83xx_spi_chipselect(struct spi_device *spi, int value)
if (cs->hw_mode != regval) {
unsigned long flags;
- void *tmp_ptr = &mpc83xx_spi->base->mode;
+ __be32 __iomem *mode = &mpc83xx_spi->base->mode;
regval = cs->hw_mode;
/* Turn off IRQs locally to minimize time that
@@ -180,12 +186,12 @@ static void mpc83xx_spi_chipselect(struct spi_device *spi, int value)
*/
local_irq_save(flags);
/* Turn off SPI unit prior changing mode */
- mpc83xx_spi_write_reg(tmp_ptr, regval & ~SPMODE_ENABLE);
- mpc83xx_spi_write_reg(tmp_ptr, regval);
+ mpc83xx_spi_write_reg(mode, regval & ~SPMODE_ENABLE);
+ mpc83xx_spi_write_reg(mode, regval);
local_irq_restore(flags);
}
- if (mpc83xx_spi->activate_cs)
- mpc83xx_spi->activate_cs(spi->chip_select, pol);
+ if (pdata->cs_control)
+ pdata->cs_control(spi, pol);
}
}
@@ -284,7 +290,7 @@ int mpc83xx_spi_setup_transfer(struct spi_device *spi, struct spi_transfer *t)
regval = mpc83xx_spi_read_reg(&mpc83xx_spi->base->mode);
if (cs->hw_mode != regval) {
unsigned long flags;
- void *tmp_ptr = &mpc83xx_spi->base->mode;
+ __be32 __iomem *mode = &mpc83xx_spi->base->mode;
regval = cs->hw_mode;
/* Turn off IRQs locally to minimize time
@@ -292,8 +298,8 @@ int mpc83xx_spi_setup_transfer(struct spi_device *spi, struct spi_transfer *t)
*/
local_irq_save(flags);
/* Turn off SPI unit prior changing mode */
- mpc83xx_spi_write_reg(tmp_ptr, regval & ~SPMODE_ENABLE);
- mpc83xx_spi_write_reg(tmp_ptr, regval);
+ mpc83xx_spi_write_reg(mode, regval & ~SPMODE_ENABLE);
+ mpc83xx_spi_write_reg(mode, regval);
local_irq_restore(flags);
}
return 0;
@@ -483,7 +489,7 @@ static int mpc83xx_spi_setup(struct spi_device *spi)
return 0;
}
-irqreturn_t mpc83xx_spi_irq(s32 irq, void *context_data)
+static irqreturn_t mpc83xx_spi_irq(s32 irq, void *context_data)
{
struct mpc83xx_spi *mpc83xx_spi = context_data;
u32 event;
@@ -545,43 +551,28 @@ static void mpc83xx_spi_cleanup(struct spi_device *spi)
kfree(spi->controller_state);
}
-static int __init mpc83xx_spi_probe(struct platform_device *dev)
+static struct spi_master * __devinit
+mpc83xx_spi_probe(struct device *dev, struct resource *mem, unsigned int irq)
{
+ struct fsl_spi_platform_data *pdata = dev->platform_data;
struct spi_master *master;
struct mpc83xx_spi *mpc83xx_spi;
- struct fsl_spi_platform_data *pdata;
- struct resource *r;
u32 regval;
int ret = 0;
- /* Get resources(memory, IRQ) associated with the device */
- master = spi_alloc_master(&dev->dev, sizeof(struct mpc83xx_spi));
-
+ master = spi_alloc_master(dev, sizeof(struct mpc83xx_spi));
if (master == NULL) {
ret = -ENOMEM;
goto err;
}
- platform_set_drvdata(dev, master);
- pdata = dev->dev.platform_data;
+ dev_set_drvdata(dev, master);
- if (pdata == NULL) {
- ret = -ENODEV;
- goto free_master;
- }
-
- r = platform_get_resource(dev, IORESOURCE_MEM, 0);
- if (r == NULL) {
- ret = -ENODEV;
- goto free_master;
- }
master->setup = mpc83xx_spi_setup;
master->transfer = mpc83xx_spi_transfer;
master->cleanup = mpc83xx_spi_cleanup;
mpc83xx_spi = spi_master_get_devdata(master);
- mpc83xx_spi->activate_cs = pdata->activate_cs;
- mpc83xx_spi->deactivate_cs = pdata->deactivate_cs;
mpc83xx_spi->qe_mode = pdata->qe_mode;
mpc83xx_spi->get_rx = mpc83xx_spi_rx_buf_u8;
mpc83xx_spi->get_tx = mpc83xx_spi_tx_buf_u8;
@@ -596,18 +587,13 @@ static int __init mpc83xx_spi_probe(struct platform_device *dev)
init_completion(&mpc83xx_spi->done);
- mpc83xx_spi->base = ioremap(r->start, r->end - r->start + 1);
+ mpc83xx_spi->base = ioremap(mem->start, mem->end - mem->start + 1);
if (mpc83xx_spi->base == NULL) {
ret = -ENOMEM;
goto put_master;
}
- mpc83xx_spi->irq = platform_get_irq(dev, 0);
-
- if (mpc83xx_spi->irq < 0) {
- ret = -ENXIO;
- goto unmap_io;
- }
+ mpc83xx_spi->irq = irq;
/* Register for SPI Interrupt */
ret = request_irq(mpc83xx_spi->irq, mpc83xx_spi_irq,
@@ -637,7 +623,7 @@ static int __init mpc83xx_spi_probe(struct platform_device *dev)
INIT_LIST_HEAD(&mpc83xx_spi->queue);
mpc83xx_spi->workqueue = create_singlethread_workqueue(
- master->dev.parent->bus_id);
+ dev_name(master->dev.parent));
if (mpc83xx_spi->workqueue == NULL) {
ret = -EBUSY;
goto free_irq;
@@ -649,9 +635,9 @@ static int __init mpc83xx_spi_probe(struct platform_device *dev)
printk(KERN_INFO
"%s: MPC83xx SPI Controller driver at 0x%p (irq = %d)\n",
- dev->dev.bus_id, mpc83xx_spi->base, mpc83xx_spi->irq);
+ dev_name(dev), mpc83xx_spi->base, mpc83xx_spi->irq);
- return ret;
+ return master;
unreg_master:
destroy_workqueue(mpc83xx_spi->workqueue);
@@ -661,18 +647,16 @@ unmap_io:
iounmap(mpc83xx_spi->base);
put_master:
spi_master_put(master);
-free_master:
- kfree(master);
err:
- return ret;
+ return ERR_PTR(ret);
}
-static int __exit mpc83xx_spi_remove(struct platform_device *dev)
+static int __devexit mpc83xx_spi_remove(struct device *dev)
{
struct mpc83xx_spi *mpc83xx_spi;
struct spi_master *master;
- master = platform_get_drvdata(dev);
+ master = dev_get_drvdata(dev);
mpc83xx_spi = spi_master_get_devdata(master);
flush_workqueue(mpc83xx_spi->workqueue);
@@ -685,23 +669,293 @@ static int __exit mpc83xx_spi_remove(struct platform_device *dev)
return 0;
}
+struct mpc83xx_spi_probe_info {
+ struct fsl_spi_platform_data pdata;
+ int *gpios;
+ bool *alow_flags;
+};
+
+static struct mpc83xx_spi_probe_info *
+to_of_pinfo(struct fsl_spi_platform_data *pdata)
+{
+ return container_of(pdata, struct mpc83xx_spi_probe_info, pdata);
+}
+
+static void mpc83xx_spi_cs_control(struct spi_device *spi, bool on)
+{
+ struct device *dev = spi->dev.parent;
+ struct mpc83xx_spi_probe_info *pinfo = to_of_pinfo(dev->platform_data);
+ u16 cs = spi->chip_select;
+ int gpio = pinfo->gpios[cs];
+ bool alow = pinfo->alow_flags[cs];
+
+ gpio_set_value(gpio, on ^ alow);
+}
+
+static int of_mpc83xx_spi_get_chipselects(struct device *dev)
+{
+ struct device_node *np = dev_archdata_get_node(&dev->archdata);
+ struct fsl_spi_platform_data *pdata = dev->platform_data;
+ struct mpc83xx_spi_probe_info *pinfo = to_of_pinfo(pdata);
+ unsigned int ngpios;
+ int i = 0;
+ int ret;
+
+ ngpios = of_gpio_count(np);
+ if (!ngpios) {
+ /*
+ * SPI w/o chip-select line. One SPI device is still permitted
+ * though.
+ */
+ pdata->max_chipselect = 1;
+ return 0;
+ }
+
+ pinfo->gpios = kmalloc(ngpios * sizeof(pinfo->gpios), GFP_KERNEL);
+ if (!pinfo->gpios)
+ return -ENOMEM;
+ memset(pinfo->gpios, -1, ngpios * sizeof(pinfo->gpios));
+
+ pinfo->alow_flags = kzalloc(ngpios * sizeof(pinfo->alow_flags),
+ GFP_KERNEL);
+ if (!pinfo->alow_flags) {
+ ret = -ENOMEM;
+ goto err_alloc_flags;
+ }
+
+ for (; i < ngpios; i++) {
+ int gpio;
+ enum of_gpio_flags flags;
+
+ gpio = of_get_gpio_flags(np, i, &flags);
+ if (!gpio_is_valid(gpio)) {
+ dev_err(dev, "invalid gpio #%d: %d\n", i, gpio);
+ goto err_loop;
+ }
+
+ ret = gpio_request(gpio, dev_name(dev));
+ if (ret) {
+ dev_err(dev, "can't request gpio #%d: %d\n", i, ret);
+ goto err_loop;
+ }
+
+ pinfo->gpios[i] = gpio;
+ pinfo->alow_flags[i] = flags & OF_GPIO_ACTIVE_LOW;
+
+ ret = gpio_direction_output(pinfo->gpios[i],
+ pinfo->alow_flags[i]);
+ if (ret) {
+ dev_err(dev, "can't set output direction for gpio "
+ "#%d: %d\n", i, ret);
+ goto err_loop;
+ }
+ }
+
+ pdata->max_chipselect = ngpios;
+ pdata->cs_control = mpc83xx_spi_cs_control;
+
+ return 0;
+
+err_loop:
+ while (i >= 0) {
+ if (gpio_is_valid(pinfo->gpios[i]))
+ gpio_free(pinfo->gpios[i]);
+ i--;
+ }
+
+ kfree(pinfo->alow_flags);
+ pinfo->alow_flags = NULL;
+err_alloc_flags:
+ kfree(pinfo->gpios);
+ pinfo->gpios = NULL;
+ return ret;
+}
+
+static int of_mpc83xx_spi_free_chipselects(struct device *dev)
+{
+ struct fsl_spi_platform_data *pdata = dev->platform_data;
+ struct mpc83xx_spi_probe_info *pinfo = to_of_pinfo(pdata);
+ int i;
+
+ if (!pinfo->gpios)
+ return 0;
+
+ for (i = 0; i < pdata->max_chipselect; i++) {
+ if (gpio_is_valid(pinfo->gpios[i]))
+ gpio_free(pinfo->gpios[i]);
+ }
+
+ kfree(pinfo->gpios);
+ kfree(pinfo->alow_flags);
+ return 0;
+}
+
+static int __devinit of_mpc83xx_spi_probe(struct of_device *ofdev,
+ const struct of_device_id *ofid)
+{
+ struct device *dev = &ofdev->dev;
+ struct device_node *np = ofdev->node;
+ struct mpc83xx_spi_probe_info *pinfo;
+ struct fsl_spi_platform_data *pdata;
+ struct spi_master *master;
+ struct resource mem;
+ struct resource irq;
+ const void *prop;
+ int ret = -ENOMEM;
+
+ pinfo = kzalloc(sizeof(*pinfo), GFP_KERNEL);
+ if (!pinfo)
+ return -ENOMEM;
+
+ pdata = &pinfo->pdata;
+ dev->platform_data = pdata;
+
+ /* Allocate bus num dynamically. */
+ pdata->bus_num = -1;
+
+ /* SPI controller is either clocked from QE or SoC clock. */
+ pdata->sysclk = get_brgfreq();
+ if (pdata->sysclk == -1) {
+ pdata->sysclk = fsl_get_sys_freq();
+ if (pdata->sysclk == -1) {
+ ret = -ENODEV;
+ goto err_clk;
+ }
+ }
+
+ prop = of_get_property(np, "mode", NULL);
+ if (prop && !strcmp(prop, "cpu-qe"))
+ pdata->qe_mode = 1;
+
+ ret = of_mpc83xx_spi_get_chipselects(dev);
+ if (ret)
+ goto err;
+
+ ret = of_address_to_resource(np, 0, &mem);
+ if (ret)
+ goto err;
+
+ ret = of_irq_to_resource(np, 0, &irq);
+ if (!ret) {
+ ret = -EINVAL;
+ goto err;
+ }
+
+ master = mpc83xx_spi_probe(dev, &mem, irq.start);
+ if (IS_ERR(master)) {
+ ret = PTR_ERR(master);
+ goto err;
+ }
+
+ of_register_spi_devices(master, np);
+
+ return 0;
+
+err:
+ of_mpc83xx_spi_free_chipselects(dev);
+err_clk:
+ kfree(pinfo);
+ return ret;
+}
+
+static int __devexit of_mpc83xx_spi_remove(struct of_device *ofdev)
+{
+ int ret;
+
+ ret = mpc83xx_spi_remove(&ofdev->dev);
+ if (ret)
+ return ret;
+ of_mpc83xx_spi_free_chipselects(&ofdev->dev);
+ return 0;
+}
+
+static const struct of_device_id of_mpc83xx_spi_match[] = {
+ { .compatible = "fsl,spi" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, of_mpc83xx_spi_match);
+
+static struct of_platform_driver of_mpc83xx_spi_driver = {
+ .name = "mpc83xx_spi",
+ .match_table = of_mpc83xx_spi_match,
+ .probe = of_mpc83xx_spi_probe,
+ .remove = __devexit_p(of_mpc83xx_spi_remove),
+};
+
+#ifdef CONFIG_MPC832x_RDB
+/*
+ * XXX XXX XXX
+ * This is "legacy" platform driver, was used by the MPC8323E-RDB boards
+ * only. The driver should go away soon, since newer MPC8323E-RDB's device
+ * tree can work with OpenFirmware driver. But for now we support old trees
+ * as well.
+ */
+static int __devinit plat_mpc83xx_spi_probe(struct platform_device *pdev)
+{
+ struct resource *mem;
+ unsigned int irq;
+ struct spi_master *master;
+
+ if (!pdev->dev.platform_data)
+ return -EINVAL;
+
+ mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!mem)
+ return -EINVAL;
+
+ irq = platform_get_irq(pdev, 0);
+ if (!irq)
+ return -EINVAL;
+
+ master = mpc83xx_spi_probe(&pdev->dev, mem, irq);
+ if (IS_ERR(master))
+ return PTR_ERR(master);
+ return 0;
+}
+
+static int __devexit plat_mpc83xx_spi_remove(struct platform_device *pdev)
+{
+ return mpc83xx_spi_remove(&pdev->dev);
+}
+
MODULE_ALIAS("platform:mpc83xx_spi");
static struct platform_driver mpc83xx_spi_driver = {
- .remove = __exit_p(mpc83xx_spi_remove),
+ .probe = plat_mpc83xx_spi_probe,
+ .remove = __exit_p(plat_mpc83xx_spi_remove),
.driver = {
.name = "mpc83xx_spi",
.owner = THIS_MODULE,
},
};
+static bool legacy_driver_failed;
+
+static void __init legacy_driver_register(void)
+{
+ legacy_driver_failed = platform_driver_register(&mpc83xx_spi_driver);
+}
+
+static void __exit legacy_driver_unregister(void)
+{
+ if (legacy_driver_failed)
+ return;
+ platform_driver_unregister(&mpc83xx_spi_driver);
+}
+#else
+static void __init legacy_driver_register(void) {}
+static void __exit legacy_driver_unregister(void) {}
+#endif /* CONFIG_MPC832x_RDB */
+
static int __init mpc83xx_spi_init(void)
{
- return platform_driver_probe(&mpc83xx_spi_driver, mpc83xx_spi_probe);
+ legacy_driver_register();
+ return of_register_platform_driver(&of_mpc83xx_spi_driver);
}
static void __exit mpc83xx_spi_exit(void)
{
- platform_driver_unregister(&mpc83xx_spi_driver);
+ of_unregister_platform_driver(&of_mpc83xx_spi_driver);
+ legacy_driver_unregister();
}
module_init(mpc83xx_spi_init);
diff --git a/drivers/spi/spi_txx9.c b/drivers/spi/spi_txx9.c
index 2296f37ea3c6..29cbb065618a 100644
--- a/drivers/spi/spi_txx9.c
+++ b/drivers/spi/spi_txx9.c
@@ -404,7 +404,8 @@ static int __init txx9spi_probe(struct platform_device *dev)
if (ret)
goto exit;
- c->workqueue = create_singlethread_workqueue(master->dev.parent->bus_id);
+ c->workqueue = create_singlethread_workqueue(
+ dev_name(master->dev.parent));
if (!c->workqueue)
goto exit_busy;
c->last_chipselect = -1;
diff --git a/drivers/spi/xilinx_spi.c b/drivers/spi/xilinx_spi.c
index fe7e5f35e5d0..494d3f756e29 100644
--- a/drivers/spi/xilinx_spi.c
+++ b/drivers/spi/xilinx_spi.c
@@ -354,7 +354,7 @@ static int __init xilinx_spi_of_probe(struct of_device *ofdev,
if (xspi->regs == NULL) {
rc = -ENOMEM;
dev_warn(&ofdev->dev, "ioremap failure\n");
- goto put_master;
+ goto release_mem;
}
xspi->irq = r_irq->start;
@@ -365,7 +365,7 @@ static int __init xilinx_spi_of_probe(struct of_device *ofdev,
prop = of_get_property(ofdev->node, "xlnx,num-ss-bits", &len);
if (!prop || len < sizeof(*prop)) {
dev_warn(&ofdev->dev, "no 'xlnx,num-ss-bits' property\n");
- goto put_master;
+ goto unmap_io;
}
master->num_chipselect = *prop;
@@ -397,6 +397,8 @@ free_irq:
free_irq(xspi->irq, xspi);
unmap_io:
iounmap(xspi->regs);
+release_mem:
+ release_mem_region(r_mem->start, resource_size(r_mem));
put_master:
spi_master_put(master);
return rc;
@@ -406,6 +408,7 @@ static int __devexit xilinx_spi_remove(struct of_device *ofdev)
{
struct xilinx_spi *xspi;
struct spi_master *master;
+ struct resource r_mem;
master = platform_get_drvdata(ofdev);
xspi = spi_master_get_devdata(master);
@@ -413,6 +416,8 @@ static int __devexit xilinx_spi_remove(struct of_device *ofdev)
spi_bitbang_stop(&xspi->bitbang);
free_irq(xspi->irq, xspi);
iounmap(xspi->regs);
+ if (!of_address_to_resource(ofdev->node, 0, &r_mem))
+ release_mem_region(r_mem.start, resource_size(&r_mem));
dev_set_drvdata(&ofdev->dev, 0);
spi_master_put(xspi->bitbang.master);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-28 11:24:25 +0100