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

Signed-off-by: Jean Delvare khali@linux-fr.org Acked-by: Mark Brown broonie@opensource.wolfsonmicro.com --- This second version fixes a bug reported by Manuel Lauss where codec->control_data was used before being initialized.

Warning: this assumes that the spitz has its codec chip on I2C bus 0, which may or may not be the case. Someone with this machine please test and report.

include/linux/i2c-id.h | 1 sound/soc/codecs/wm8750.c | 105 ++++++++++++++++++++++----------------------- sound/soc/codecs/wm8750.h | 1 sound/soc/pxa/spitz.c | 1 4 files changed, 55 insertions(+), 53 deletions(-)

--- linux-2.6.27-rc4.orig/include/linux/i2c-id.h 2008-08-26 19:56:18.000000000 +0200 +++ linux-2.6.27-rc4/include/linux/i2c-id.h 2008-08-27 22:46:24.000000000 +0200 @@ -65,7 +65,6 @@ #define I2C_DRIVERID_DS1672 81 /* Dallas/Maxim DS1672 RTC */ #define I2C_DRIVERID_TLV320AIC23B 87 /* TI TLV320AIC23B audio codec */ #define I2C_DRIVERID_WM8731 89 /* Wolfson WM8731 audio codec */ -#define I2C_DRIVERID_WM8750 90 /* Wolfson WM8750 audio codec */ #define I2C_DRIVERID_WM8753 91 /* Wolfson WM8753 audio codec */ #define I2C_DRIVERID_LM4857 92 /* LM4857 Audio Amplifier */ #define I2C_DRIVERID_VP27SMPX 93 /* Panasonic VP27s tuner internal MPX */ --- linux-2.6.27-rc4.orig/sound/soc/codecs/wm8750.c 2008-08-26 19:56:18.000000000 +0200 +++ linux-2.6.27-rc4/sound/soc/codecs/wm8750.c 2008-08-27 22:45:24.000000000 +0200 @@ -846,83 +846,86 @@ static struct snd_soc_device *wm8750_soc * 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_

#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 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); --- linux-2.6.27-rc4.orig/sound/soc/codecs/wm8750.h 2008-08-26 19:56:18.000000000 +0200 +++ linux-2.6.27-rc4/sound/soc/codecs/wm8750.h 2008-08-26 21:33:59.000000000 +0200 @@ -58,6 +58,7 @@ #define WM8750_SYSCLK 0

struct wm8750_setup_data { + int i2c_bus; unsigned short i2c_address; };

--- linux-2.6.27-rc4.orig/sound/soc/pxa/spitz.c 2008-08-26 19:56:18.000000000 +0200 +++ linux-2.6.27-rc4/sound/soc/pxa/spitz.c 2008-08-26 21:33:59.000000000 +0200 @@ -337,6 +337,7 @@ static struct snd_soc_machine snd_soc_ma

/* spitz audio private data */ static struct wm8750_setup_data spitz_wm8750_setup = { + .i2c_bus = 0, .i2c_address = 0x1b, };