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Commit ee1d0099 authored by Jean Delvare's avatar Jean Delvare Committed by Jaroslav Kysela
Browse files

ALSA: ASoC: Convert wm8750 to a new-style i2c driver 



Convert the wm8750 codec driver to the new (standard) device driver
binding model.

Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarJaroslav Kysela <perex@perex.cz>
parent d28d2713

sound/soc/codecs/wm8750.c

+53 −52
Original line number Diff line number Diff line
@@ -846,83 +846,86 @@ static struct snd_soc_device *wm8750_socdev; 
 *    low  = 0x1a

 *    high = 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 wm8750_i2c_driver;

static struct i2c_client client_template;



static int wm8750_codec_probe(struct i2c_adapter *adap, int addr, int kind)

static int wm8750_i2c_probe(struct i2c_client *i2c,

			    const struct i2c_device_id *id)

{

	struct snd_soc_device *socdev = wm8750_socdev;

	struct wm8750_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) {

		pr_err("failed to attach codec at addr %x\n", addr);

		goto err;

	}



	ret = wm8750_init(socdev);

	if (ret < 0) {

	if (ret < 0)

		pr_err("failed to initialise WM8750\n");

		goto err;

	}

	return ret;



err:

	kfree(i2c);

	return ret;

}



static int wm8750_i2c_detach(struct i2c_client *client)

static int wm8750_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 wm8750_i2c_attach(struct i2c_adapter *adap)

{

	return i2c_probe(adap, &addr_data, wm8750_codec_probe);

}

static const struct i2c_device_id wm8750_i2c_id[] = {

	{ "wm8750", 0 },

	{ }

};

MODULE_DEVICE_TABLE(i2c, wm8750_i2c_id);



/* corgi i2c codec control layer */

static struct i2c_driver wm8750_i2c_driver = {

	.driver = {

		.name = "WM8750 I2C Codec",

		.owner = THIS_MODULE,

	},

	.id =             I2C_DRIVERID_WM8750,

	.attach_adapter = wm8750_i2c_attach,

	.detach_client =  wm8750_i2c_detach,

	.command =        NULL,

	.probe =    wm8750_i2c_probe,

	.remove =   wm8750_i2c_remove,

	.id_table = wm8750_i2c_id,

};



static struct i2c_client client_template = {

	.name =   "WM8750",

	.driver = &wm8750_i2c_driver,

};

static int wm8750_add_i2c_device(struct platform_device *pdev,

				 const struct wm8750_setup_data *setup)

{

	struct i2c_board_info info;

	struct i2c_adapter *adapter;

	struct i2c_client *client;

	int ret;



	ret = i2c_add_driver(&wm8750_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, "wm8750", 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(&wm8750_i2c_driver);

	return -ENODEV;

}

#endif



static int wm8750_probe(struct platform_device *pdev)
@@ -954,11 +957,8 @@ static int wm8750_probe(struct platform_device *pdev) 


#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;

		ret = i2c_add_driver(&wm8750_i2c_driver);

		if (ret != 0)

			printk(KERN_ERR "can't add i2c driver");

		ret = wm8750_add_i2c_device(pdev, setup);

	}

#else

		/* Add other interfaces here */
@@ -1002,6 +1002,7 @@ static int wm8750_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(&wm8750_i2c_driver);

#endif

	kfree(codec->private_data);

sound/soc/codecs/wm8750.h

+1 −0
Original line number Diff line number Diff line
@@ -58,6 +58,7 @@ 
#define WM8750_SYSCLK	0



struct wm8750_setup_data {

	int i2c_bus;

	unsigned short i2c_address;

};

sound/soc/pxa/spitz.c

+1 −0
Original line number Diff line number Diff line
@@ -337,6 +337,7 @@ static struct snd_soc_machine snd_soc_machine_spitz = { 


/* spitz audio private data */

static struct wm8750_setup_data spitz_wm8750_setup = {

	.i2c_bus = 0,

	.i2c_address = 0x1b,

};