ALSA: ASoC: Convert tlv320aic3x to a new-style i2c driver (v2)

Convert the tlv320aic3x codec driver to the new (standard) device
driver binding model.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Vladimir Barinov <vbarinov@ru.mvista.com>
Tested-by: Jarkko Nikula <jarkko.nikula@nokia.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

4 files changed, 57 insertions, 52 deletions

diff --git a/sound/soc/codecs/tlv320aic3x.c b/sound/soc/codecs/tlv320aic3x.c
index 5f9abb199435..88428e22a4d3 100644
--- a/sound/soc/codecs/tlv320aic3x.c
+++ b/sound/soc/codecs/tlv320aic3x.c
@@ -1172,71 +1172,39 @@ static struct snd_soc_device *aic3x_socdev;
  * AIC3X 2 wire address can be up to 4 devices with device addresses
  * 0x18, 0x19, 0x1A, 0x1B
  */
-static unsigned short normal_i2c[] = { 0, I2C_CLIENT_END };
-
-/* Magic definition of all other variables and things */
-I2C_CLIENT_INSMOD;
-
-static struct i2c_driver aic3x_i2c_driver;
-static struct i2c_client client_template;
 
 /*
  * If the i2c layer weren't so broken, we could pass this kind of data
  * around
  */
-static int aic3x_codec_probe(struct i2c_adapter *adap, int addr, int kind)
+static int aic3x_i2c_probe(struct i2c_client *i2c,
+                           const struct i2c_device_id *id)
 {
         struct snd_soc_device *socdev = aic3x_socdev;
-        struct aic3x_setup_data *setup = socdev->codec_data;
         struct snd_soc_codec *codec = socdev->codec;
-        struct i2c_client *i2c;
         int ret;
 
-        if (addr != setup->i2c_address)
-                return -ENODEV;
-
-        client_template.adapter = adap;
-        client_template.addr = addr;
-
-        i2c = kmemdup(&client_template, sizeof(client_template), GFP_KERNEL);
-        if (i2c == NULL)
-                return -ENOMEM;
-
         i2c_set_clientdata(i2c, codec);
         codec->control_data = i2c;
 
-        ret = i2c_attach_client(i2c);
-        if (ret < 0) {
-                printk(KERN_ERR "aic3x: failed to attach codec at addr %x\n",
-                       addr);
-                goto err;
-        }
-
         ret = aic3x_init(socdev);
-        if (ret < 0) {
+        if (ret < 0)
                 printk(KERN_ERR "aic3x: failed to initialise AIC3X\n");
-                goto err;
-        }
-        return ret;
-
-err:
-        kfree(i2c);
         return ret;
 }
 
-static int aic3x_i2c_detach(struct i2c_client *client)
+static int aic3x_i2c_remove(struct i2c_client *client)
 {
         struct snd_soc_codec *codec = i2c_get_clientdata(client);
-        i2c_detach_client(client);
         kfree(codec->reg_cache);
-        kfree(client);
         return 0;
 }
 
-static int aic3x_i2c_attach(struct i2c_adapter *adap)
-{
-        return i2c_probe(adap, &addr_data, aic3x_codec_probe);
-}
+static const struct i2c_device_id aic3x_i2c_id[] = {
+        { "tlv320aic3x", 0 },
+        { }
+};
+MODULE_DEVICE_TABLE(i2c, aic3x_i2c_id);
 
 /* machine i2c codec control layer */
 static struct i2c_driver aic3x_i2c_driver = {
@@ -1244,13 +1212,9 @@ static struct i2c_driver aic3x_i2c_driver = {
                 .name = "aic3x I2C Codec",
                 .owner = THIS_MODULE,
         },
-        .attach_adapter = aic3x_i2c_attach,
-        .detach_client = aic3x_i2c_detach,
-};
-
-static struct i2c_client client_template = {
-        .name = "AIC3X",
-        .driver = &aic3x_i2c_driver,
+        .probe = aic3x_i2c_probe,
+        .remove = aic3x_i2c_remove,
+        .id_table = aic3x_i2c_id,
 };
 
 static int aic3x_i2c_read(struct i2c_client *client, u8 *value, int len)
@@ -1258,6 +1222,46 @@ static int aic3x_i2c_read(struct i2c_client *client, u8 *value, int len)
         value[0] = i2c_smbus_read_byte_data(client, value[0]);
         return (len == 1);
 }
+
+static int aic3x_add_i2c_device(struct platform_device *pdev,
+                                 const struct aic3x_setup_data *setup)
+{
+        struct i2c_board_info info;
+        struct i2c_adapter *adapter;
+        struct i2c_client *client;
+        int ret;
+
+        ret = i2c_add_driver(&aic3x_i2c_driver);
+        if (ret != 0) {
+                dev_err(&pdev->dev, "can't add i2c driver\n");
+                return ret;
+        }
+
+        memset(&info, 0, sizeof(struct i2c_board_info));
+        info.addr = setup->i2c_address;
+        strlcpy(info.type, "tlv320aic3x", I2C_NAME_SIZE);
+
+        adapter = i2c_get_adapter(setup->i2c_bus);
+        if (!adapter) {
+                dev_err(&pdev->dev, "can't get i2c adapter %d\n",
+                        setup->i2c_bus);
+                goto err_driver;
+        }
+
+        client = i2c_new_device(adapter, &info);
+        i2c_put_adapter(adapter);
+        if (!client) {
+                dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
+                        (unsigned int)info.addr);
+                goto err_driver;
+        }
+
+        return 0;
+
+err_driver:
+        i2c_del_driver(&aic3x_i2c_driver);
+        return -ENODEV;
+}
 #endif
 
 static int aic3x_probe(struct platform_device *pdev)
@@ -1290,12 +1294,9 @@ static int aic3x_probe(struct platform_device *pdev)
         aic3x_socdev = socdev;
 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
         if (setup->i2c_address) {
-                normal_i2c[0] = setup->i2c_address;
                 codec->hw_write = (hw_write_t) i2c_master_send;
                 codec->hw_read = (hw_read_t) aic3x_i2c_read;
-                ret = i2c_add_driver(&aic3x_i2c_driver);
-                if (ret != 0)
-                        printk(KERN_ERR "can't add i2c driver");
+                ret = aic3x_add_i2c_device(pdev, setup);
         }
 #else
         /* Add other interfaces here */
@@ -1320,6 +1321,7 @@ static int aic3x_remove(struct platform_device *pdev)
         snd_soc_free_pcms(socdev);
         snd_soc_dapm_free(socdev);
 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+        i2c_unregister_device(codec->control_data);
         i2c_del_driver(&aic3x_i2c_driver);
 #endif
         kfree(codec->private_data);
diff --git a/sound/soc/codecs/tlv320aic3x.h b/sound/soc/codecs/tlv320aic3x.h
index d76c079b86e7..afb238ec0b9d 100644
--- a/sound/soc/codecs/tlv320aic3x.h
+++ b/sound/soc/codecs/tlv320aic3x.h
@@ -224,6 +224,7 @@ int aic3x_get_gpio(struct snd_soc_codec *codec, int gpio);
 int aic3x_headset_detected(struct snd_soc_codec *codec);
 
 struct aic3x_setup_data {
+        int i2c_bus;
         unsigned short i2c_address;
         unsigned int gpio_func[2];
 };
diff --git a/sound/soc/davinci/davinci-evm.c b/sound/soc/davinci/davinci-evm.c
index 65fdbd81a379..092202302bd8 100644
--- a/sound/soc/davinci/davinci-evm.c
+++ b/sound/soc/davinci/davinci-evm.c
@@ -136,6 +136,7 @@ static struct snd_soc_machine snd_soc_machine_evm = {
 
 /* evm audio private data */
 static struct aic3x_setup_data evm_aic3x_setup = {
+        .i2c_bus = 0,
         .i2c_address = 0x1b,
 };
 
diff --git a/sound/soc/omap/n810.c b/sound/soc/omap/n810.c
index 87d0ed01f65a..d166b6b2a60d 100644
--- a/sound/soc/omap/n810.c
+++ b/sound/soc/omap/n810.c
@@ -290,6 +290,7 @@ static struct snd_soc_machine snd_soc_machine_n810 = {
 
 /* Audio private data */
 static struct aic3x_setup_data n810_aic33_setup = {
+        .i2c_bus = 2,
         .i2c_address = 0x18,
         .gpio_func[0] = AIC3X_GPIO1_FUNC_DISABLED,
         .gpio_func[1] = AIC3X_GPIO2_FUNC_DIGITAL_MIC_INPUT,