[alsa-devel] [PATCH v2 5/6] misc: atmel-ssc: get LRCLK pin selection from DT

[Michał Mirosław]

Store LRCLK pin selection for use by ASoC DAI driver.

Signed-off-by: Michał Mirosław <mirq-linux at rere.qmqm.pl>

---
  v2: split from ASoC implementation

---
 drivers/misc/atmel-ssc.c  | 9 +++++++++
 include/linux/atmel-ssc.h | 2 ++
 2 files changed, 11 insertions(+)

diff --git a/drivers/misc/atmel-ssc.c b/drivers/misc/atmel-ssc.c
index ab4144ea1f11..1322e29bc37a 100644
--- a/drivers/misc/atmel-ssc.c
+++ b/drivers/misc/atmel-ssc.c
@@ -210,6 +210,15 @@ static int ssc_probe(struct platform_device *pdev)
 		struct device_node *np = pdev->dev.of_node;
 		ssc->clk_from_rk_pin =
 			of_property_read_bool(np, "atmel,clk-from-rk-pin");
+		ssc->lrclk_from_tf_pin =
+			of_property_read_bool(np, "atmel,lrclk-from-tf-pin");
+		ssc->lrclk_from_rf_pin =
+			of_property_read_bool(np, "atmel,lrclk-from-rf-pin");
+
+		if (ssc->lrclk_from_tf_pin && ssc->lrclk_from_rf_pin) {
+			dev_err(&pdev->dev, "both LRCLK from RK/TK options found in DT node");
+			return -EINVAL;
+		}
 	}
 
 	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
diff --git a/include/linux/atmel-ssc.h b/include/linux/atmel-ssc.h
index 6091d2abc1eb..fbe1c2ffaa81 100644
--- a/include/linux/atmel-ssc.h
+++ b/include/linux/atmel-ssc.h
@@ -21,6 +21,8 @@ struct ssc_device {
 	int			user;
 	int			irq;
 	bool			clk_from_rk_pin;
+	bool			lrclk_from_tf_pin;
+	bool			lrclk_from_rf_pin;
 	bool			sound_dai;
 };
 
-- 
2.20.1