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ARM: at91: atmel-ssc: add platform device id table

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Add platform device id to check whether the SSC controller support
pdc or dam for data transfer

If match "at91rm9200_ssc", which support pdc for data transfer
If match "at91sam9g45_ssc", which support dma for data transfer

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Bo Shen 2012-11-06 13:57:51 +08:00 committed by Mark Brown
parent 90b4d60c61
commit 636036d29a
14 changed files with 54 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
arch/arm/mach-at91/at91rm9200.c
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@ -184,9 +184,9 @@ static struct clk_lookup periph_clocks_lookups[] = {
CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.1", &tc3_clk),
CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.1", &tc4_clk),
CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.1", &tc5_clk),
CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk),
CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk),
CLKDEV_CON_DEV_ID("pclk", "ssc.2", &ssc2_clk),
CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.0", &ssc0_clk),
CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.1", &ssc1_clk),
CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.2", &ssc2_clk),
CLKDEV_CON_DEV_ID(NULL, "i2c-at91rm9200.0", &twi_clk),
/* fake hclk clock */
CLKDEV_CON_DEV_ID("hclk", "at91_ohci", &ohci_clk),

6
arch/arm/mach-at91/at91rm9200_devices.c
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@ -752,7 +752,7 @@ static struct resource ssc0_resources[] = {
};
static struct platform_device at91rm9200_ssc0_device = {
.name = "ssc",
.name = "at91rm9200_ssc",
.id = 0,
.dev = {
.dma_mask = &ssc0_dmamask,
@ -794,7 +794,7 @@ static struct resource ssc1_resources[] = {
};
static struct platform_device at91rm9200_ssc1_device = {
.name = "ssc",
.name = "at91rm9200_ssc",
.id = 1,
.dev = {
.dma_mask = &ssc1_dmamask,
@ -836,7 +836,7 @@ static struct resource ssc2_resources[] = {
};
static struct platform_device at91rm9200_ssc2_device = {
.name = "ssc",
.name = "at91rm9200_ssc",
.id = 2,
.dev = {
.dma_mask = &ssc2_dmamask,

2
arch/arm/mach-at91/at91sam9260.c
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@ -210,7 +210,7 @@ static struct clk_lookup periph_clocks_lookups[] = {
CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.1", &tc3_clk),
CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.1", &tc4_clk),
CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.1", &tc5_clk),
CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc_clk),
CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.0", &ssc_clk),
CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9260.0", &twi_clk),
CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9g20.0", &twi_clk),
/* more usart lookup table for DT entries */

2
arch/arm/mach-at91/at91sam9260_devices.c
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@ -742,7 +742,7 @@ static struct resource ssc_resources[] = {
};
static struct platform_device at91sam9260_ssc_device = {
.name = "ssc",
.name = "at91rm9200_ssc",
.id = 0,
.dev = {
.dma_mask = &ssc_dmamask,

6
arch/arm/mach-at91/at91sam9261.c
View File

@ -174,9 +174,9 @@ static struct clk_lookup periph_clocks_lookups[] = {
CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tc0_clk),
CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.0", &tc1_clk),
CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.0", &tc2_clk),
CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk),
CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk),
CLKDEV_CON_DEV_ID("pclk", "ssc.2", &ssc2_clk),
CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.0", &ssc0_clk),
CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.1", &ssc1_clk),
CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.2", &ssc2_clk),
CLKDEV_CON_DEV_ID("hclk", "at91_ohci", &hck0),
CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9261.0", &twi_clk),
CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9g10.0", &twi_clk),

6
arch/arm/mach-at91/at91sam9261_devices.c
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@ -706,7 +706,7 @@ static struct resource ssc0_resources[] = {
};
static struct platform_device at91sam9261_ssc0_device = {
.name = "ssc",
.name = "at91rm9200_ssc",
.id = 0,
.dev = {
.dma_mask = &ssc0_dmamask,
@ -748,7 +748,7 @@ static struct resource ssc1_resources[] = {
};
static struct platform_device at91sam9261_ssc1_device = {
.name = "ssc",
.name = "at91rm9200_ssc",
.id = 1,
.dev = {
.dma_mask = &ssc1_dmamask,
@ -790,7 +790,7 @@ static struct resource ssc2_resources[] = {
};
static struct platform_device at91sam9261_ssc2_device = {
.name = "ssc",
.name = "at91rm9200_ssc",
.id = 2,
.dev = {
.dma_mask = &ssc2_dmamask,

4
arch/arm/mach-at91/at91sam9263.c
View File

@ -186,8 +186,8 @@ static struct clk *periph_clocks[] __initdata = {
static struct clk_lookup periph_clocks_lookups[] = {
/* One additional fake clock for macb_hclk */
CLKDEV_CON_ID("hclk", &macb_clk),
CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk),
CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk),
CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.0", &ssc0_clk),
CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.1", &ssc1_clk),
CLKDEV_CON_DEV_ID("mci_clk", "atmel_mci.0", &mmc0_clk),
CLKDEV_CON_DEV_ID("mci_clk", "atmel_mci.1", &mmc1_clk),
CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.0", &spi0_clk),

4
arch/arm/mach-at91/at91sam9263_devices.c
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@ -1199,7 +1199,7 @@ static struct resource ssc0_resources[] = {
};
static struct platform_device at91sam9263_ssc0_device = {
.name = "ssc",
.name = "at91rm9200_ssc",
.id = 0,
.dev = {
.dma_mask = &ssc0_dmamask,
@ -1241,7 +1241,7 @@ static struct resource ssc1_resources[] = {
};
static struct platform_device at91sam9263_ssc1_device = {
.name = "ssc",
.name = "at91rm9200_ssc",
.id = 1,
.dev = {
.dma_mask = &ssc1_dmamask,

4
arch/arm/mach-at91/at91sam9g45.c
View File

@ -239,8 +239,8 @@ static struct clk_lookup periph_clocks_lookups[] = {
CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.1", &tcb0_clk),
CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9g10.0", &twi0_clk),
CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9g10.1", &twi1_clk),
CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk),
CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk),
CLKDEV_CON_DEV_ID("pclk", "at91sam9g45_ssc.0", &ssc0_clk),
CLKDEV_CON_DEV_ID("pclk", "at91sam9g45_ssc.1", &ssc1_clk),
CLKDEV_CON_DEV_ID(NULL, "atmel-trng", &trng_clk),
CLKDEV_CON_DEV_ID(NULL, "atmel_sha", &aestdessha_clk),
CLKDEV_CON_DEV_ID(NULL, "atmel_tdes", &aestdessha_clk),

4
arch/arm/mach-at91/at91sam9g45_devices.c
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@ -1459,7 +1459,7 @@ static struct resource ssc0_resources[] = {
};
static struct platform_device at91sam9g45_ssc0_device = {
.name = "ssc",
.name = "at91sam9g45_ssc",
.id = 0,
.dev = {
.dma_mask = &ssc0_dmamask,
@ -1501,7 +1501,7 @@ static struct resource ssc1_resources[] = {
};
static struct platform_device at91sam9g45_ssc1_device = {
.name = "ssc",
.name = "at91sam9g45_ssc",
.id = 1,
.dev = {
.dma_mask = &ssc1_dmamask,

4
arch/arm/mach-at91/at91sam9rl.c
View File

@ -184,8 +184,8 @@ static struct clk_lookup periph_clocks_lookups[] = {
CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tc0_clk),
CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.0", &tc1_clk),
CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.0", &tc2_clk),
CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk),
CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk),
CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.0", &ssc0_clk),
CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.1", &ssc1_clk),
CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9g20.0", &twi0_clk),
CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9g20.1", &twi1_clk),
CLKDEV_CON_ID("pioA", &pioA_clk),

4
arch/arm/mach-at91/at91sam9rl_devices.c
View File

@ -832,7 +832,7 @@ static struct resource ssc0_resources[] = {
};
static struct platform_device at91sam9rl_ssc0_device = {
.name = "ssc",
.name = "at91rm9200_ssc",
.id = 0,
.dev = {
.dma_mask = &ssc0_dmamask,
@ -874,7 +874,7 @@ static struct resource ssc1_resources[] = {
};
static struct platform_device at91sam9rl_ssc1_device = {
.name = "ssc",
.name = "at91rm9200_ssc",
.id = 1,
.dev = {
.dma_mask = &ssc1_dmamask,

23
drivers/misc/atmel-ssc.c
View File

@ -68,6 +68,26 @@ void ssc_free(struct ssc_device *ssc)
}
EXPORT_SYMBOL(ssc_free);
static struct atmel_ssc_platform_data at91rm9200_config = {
.use_dma = 0,
};
static struct atmel_ssc_platform_data at91sam9g45_config = {
.use_dma = 1,
};
static const struct platform_device_id atmel_ssc_devtypes[] = {
{
.name = "at91rm9200_ssc",
.driver_data = (unsigned long) &at91rm9200_config,
}, {
.name = "at91sam9g45_ssc",
.driver_data = (unsigned long) &at91sam9g45_config,
}, {
/* sentinel */
}
};
static int ssc_probe(struct platform_device *pdev)
{
struct resource *regs;
@ -80,6 +100,8 @@ static int ssc_probe(struct platform_device *pdev)
}
ssc->pdev = pdev;
ssc->pdata = (struct atmel_ssc_platform_data *)
platform_get_device_id(pdev)->driver_data;
regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!regs) {
@ -139,6 +161,7 @@ static struct platform_driver ssc_driver = {
.name = "ssc",
.owner = THIS_MODULE,
},
.id_table = atmel_ssc_devtypes,
.probe = ssc_probe,
.remove = __devexit_p(ssc_remove),
};

5
include/linux/atmel-ssc.h
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@ -5,10 +5,15 @@
#include <linux/list.h>
#include <linux/io.h>
struct atmel_ssc_platform_data {
int use_dma;
};
struct ssc_device {
struct list_head list;
void __iomem *regs;
struct platform_device *pdev;
struct atmel_ssc_platform_data *pdata;
struct clk *clk;
int user;
int irq;