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authorBo Shen <voice.shen@atmel.com>2012-11-06 13:57:51 +0800
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-11-06 10:13:19 +0100
commit636036d29a20154b897571e1d5949faac98bfb7c (patch)
tree4d9516e395ff9952794ad83bfd3e8d8e79930fc0 /drivers/misc/atmel-ssc.c
parent90b4d60c6103105a634c495003c2ce931f075f63 (diff)
ARM: at91: atmel-ssc: add platform device id table
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>
Diffstat (limited to 'drivers/misc/atmel-ssc.c')
-rw-r--r--drivers/misc/atmel-ssc.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/misc/atmel-ssc.c b/drivers/misc/atmel-ssc.c
index ac00f83ea86b..f40abd8a6695 100644
--- a/drivers/misc/atmel-ssc.c
+++ b/drivers/misc/atmel-ssc.c
@@ -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),
};