ASoC: tpa6130a2: Add device tree support

Add device tree support to tpa6130a2 driver and document the
bindings.

Signed-off-by: Sebastian Reichel <sre@debian.org>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 23 insertions, 9 deletions

diff --git a/sound/soc/codecs/tpa6130a2.c b/sound/soc/codecs/tpa6130a2.c
index c58bee8346ce..998555f2a8aa 100644
--- a/sound/soc/codecs/tpa6130a2.c
+++ b/sound/soc/codecs/tpa6130a2.c
@@ -30,6 +30,7 @@
 #include <sound/tpa6130a2-plat.h>
 #include <sound/soc.h>
 #include <sound/tlv.h>
+#include <linux/of_gpio.h>
 
 #include "tpa6130a2.h"
 
@@ -364,30 +365,33 @@ static int tpa6130a2_probe(struct i2c_client *client,
 {
         struct device *dev;
         struct tpa6130a2_data *data;
-        struct tpa6130a2_platform_data *pdata;
+        struct tpa6130a2_platform_data *pdata = client->dev.platform_data;
+        struct device_node *np = client->dev.of_node;
         const char *regulator;
         int ret;
 
         dev = &client->dev;
 
-        if (client->dev.platform_data == NULL) {
-                dev_err(dev, "Platform data not set\n");
-                dump_stack();
-                return -ENODEV;
-        }
-
         data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
         if (data == NULL) {
                 dev_err(dev, "Can not allocate memory\n");
                 return -ENOMEM;
         }
 
+        if (pdata) {
+                data->power_gpio = pdata->power_gpio;
+        } else if (np) {
+                data->power_gpio = of_get_named_gpio(np, "power-gpio", 0);
+        } else {
+                dev_err(dev, "Platform data not set\n");
+                dump_stack();
+                return -ENODEV;
+        }
+
         tpa6130a2_client = client;
 
         i2c_set_clientdata(tpa6130a2_client, data);
 
-        pdata = client->dev.platform_data;
-        data->power_gpio = pdata->power_gpio;
         data->id = id->driver_data;
 
         mutex_init(&data->mutex);
@@ -466,10 +470,20 @@ static const struct i2c_device_id tpa6130a2_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, tpa6130a2_id);
 
+#if IS_ENABLED(CONFIG_OF)
+static const struct of_device_id tpa6130a2_of_match[] = {
+        { .compatible = "ti,tpa6130a2", },
+        { .compatible = "ti,tpa6140a2" },
+        {},
+};
+MODULE_DEVICE_TABLE(of, tpa6130a2_of_match);
+#endif
+
 static struct i2c_driver tpa6130a2_i2c_driver = {
         .driver = {
                 .name = "tpa6130a2",
                 .owner = THIS_MODULE,
+                .of_match_table = of_match_ptr(tpa6130a2_of_match),
         },
         .probe = tpa6130a2_probe,
         .remove = tpa6130a2_remove,