ASoC: atmel-ssc: distinguish whether SSC supports fslen ext

Add compatible string to distinguish whether SSC supports
frame sync length extension.
Signed-off-by: Bo Shen <voice.shen@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

drivers/misc/atmel-ssc.c

@@ -83,16 +83,26 @@ EXPORT_SYMBOL(ssc_free);
 
 static struct atmel_ssc_platform_data at91rm9200_config = {
 	.use_dma = 0,
+	.has_fslen_ext = 0,
+};
+
+static struct atmel_ssc_platform_data at91sam9rl_config = {
+	.use_dma = 0,
+	.has_fslen_ext = 1,
 };
 
 static struct atmel_ssc_platform_data at91sam9g45_config = {
 	.use_dma = 1,
+	.has_fslen_ext = 1,
 };
 
 static const struct platform_device_id atmel_ssc_devtypes[] = {
 	{
 		.name = "at91rm9200_ssc",
 		.driver_data = (unsigned long) &at91rm9200_config,
+	}, {
+		.name = "at91sam9rl_ssc",
+		.driver_data = (unsigned long) &at91sam9rl_config,
 	}, {
 		.name = "at91sam9g45_ssc",
 		.driver_data = (unsigned long) &at91sam9g45_config,
@@ -106,6 +116,9 @@ static const struct of_device_id atmel_ssc_dt_ids[] = {
 	{
 		.compatible = "atmel,at91rm9200-ssc",
 		.data = &at91rm9200_config,
+	}, {
+		.compatible = "atmel,at91sam9rl-ssc",
+		.data = &at91sam9rl_config,
 	}, {
 		.compatible = "atmel,at91sam9g45-ssc",
 		.data = &at91sam9g45_config,

include/linux/atmel-ssc.h

@@ -7,6 +7,7 @@
 
 struct atmel_ssc_platform_data {
 	int			use_dma;
+	int			has_fslen_ext;
 };
 
 struct ssc_device {