ASoC: fsl: add dt support for imx-audmux

It adds device tree probe support for imx-audmux driver.

Signed-off-by: Richard Zhao <richard.zhao@linaro.org>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/sound/soc/imx/imx-audmux.c b/sound/soc/imx/imx-audmux.c
index 87f8768e1cdc..b83699d905bb 100644
--- a/sound/soc/imx/imx-audmux.c
+++ b/sound/soc/imx/imx-audmux.c
@@ -22,6 +22,8 @@
 #include <linux/err.h>
 #include <linux/io.h>
 #include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 
@@ -197,6 +199,13 @@ static struct platform_device_id imx_audmux_ids[] = {
 };
 MODULE_DEVICE_TABLE(platform, imx_audmux_ids);
 
+static const struct of_device_id imx_audmux_dt_ids[] = {
+        { .compatible = "fsl,imx21-audmux", .data = &imx_audmux_ids[0], },
+        { .compatible = "fsl,imx31-audmux", .data = &imx_audmux_ids[1], },
+        { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, imx_audmux_dt_ids);
+
 static const uint8_t port_mapping[] = {
         0x0, 0x4, 0x8, 0x10, 0x14, 0x1c,
 };
@@ -243,6 +252,8 @@ EXPORT_SYMBOL_GPL(imx_audmux_v2_configure_port);
 static int __init imx_audmux_probe(struct platform_device *pdev)
 {
         struct resource *res;
+        const struct of_device_id *of_id =
+                        of_match_device(imx_audmux_dt_ids, &pdev->dev);
 
         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
         audmux_base = devm_request_and_ioremap(&pdev->dev, res);
@@ -256,6 +267,8 @@ static int __init imx_audmux_probe(struct platform_device *pdev)
                 audmux_clk = NULL;
         }
 
+        if (of_id)
+                pdev->id_entry = of_id->data;
         audmux_type = pdev->id_entry->driver_data;
         if (audmux_type == IMX31_AUDMUX)
                 audmux_debugfs_init();
@@ -279,6 +292,7 @@ static struct platform_driver imx_audmux_driver = {
         .driver = {
                 .name   = DRIVER_NAME,
                 .owner  = THIS_MODULE,
+                .of_match_table = imx_audmux_dt_ids,
         }
 };