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authorMark Brown <broonie@opensource.wolfsonmicro.com>2008-12-09 12:51:56 +0000
committerMark Brown <broonie@opensource.wolfsonmicro.com>2008-12-09 13:30:05 +0000
commitf0752331b89ce79063f765545dd7dd5f49d9a713 (patch)
treeb8af22b735ec99bf65ae47a636ced7e6e59db7f6 /sound/soc/codecs
parent6b05eda6383d89bffc21da654d148733e7839540 (diff)
ASoC: Convert WM8900 to allow registration by machine code
This makes use of the support for delayed DAI registration to allow the WM8900 I2C device to be registered by general platform/architecture code rather than as part of the ASoC device probe. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/codecs')
-rw-r--r--sound/soc/codecs/wm8900.c97
1 files changed, 20 insertions, 77 deletions
diff --git a/sound/soc/codecs/wm8900.c b/sound/soc/codecs/wm8900.c
index 02bb1c999ba1..34e58af0c65a 100644
--- a/sound/soc/codecs/wm8900.c
+++ b/sound/soc/codecs/wm8900.c
@@ -1382,32 +1382,21 @@ priv_err:
return ret;
}
-static struct snd_soc_device *wm8900_socdev;
+static struct i2c_client *wm8900_client;
-#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
-
-/* If the i2c layer weren't so broken, we could pass this kind of data
- around */
static int wm8900_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
- struct snd_soc_device *socdev = wm8900_socdev;
- struct snd_soc_codec *codec = socdev->codec;
- int ret;
-
- i2c_set_clientdata(i2c, codec);
- codec->control_data = i2c;
-
- ret = wm8900_init(socdev);
- if (ret < 0)
- dev_err(&i2c->dev, "failed to initialise WM8900\n");
- return ret;
+ wm8900_client = i2c;
+ wm8900_dai.dev = &i2c->dev;
+ return snd_soc_register_dai(&wm8900_dai);
}
static int wm8900_i2c_remove(struct i2c_client *client)
{
- struct snd_soc_codec *codec = i2c_get_clientdata(client);
- kfree(codec->reg_cache);
+ snd_soc_unregister_dai(&wm8900_dai);
+ wm8900_dai.dev = NULL;
+ wm8900_client = NULL;
return 0;
}
@@ -1427,57 +1416,17 @@ static struct i2c_driver wm8900_i2c_driver = {
.id_table = wm8900_i2c_id,
};
-static int wm8900_add_i2c_device(struct platform_device *pdev,
- const struct wm8900_setup_data *setup)
-{
- struct i2c_board_info info;
- struct i2c_adapter *adapter;
- struct i2c_client *client;
- int ret;
-
- ret = i2c_add_driver(&wm8900_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, "wm8900", 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(&wm8900_i2c_driver);
- return -ENODEV;
-}
-#endif
-
static int wm8900_probe(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
- struct wm8900_setup_data *setup;
struct snd_soc_codec *codec;
int ret = 0;
- dev_info(&pdev->dev, "WM8900 Audio Codec\n");
+ if (!wm8900_client) {
+ dev_err(&pdev->dev, "I2C client not yet instantiated\n");
+ return -ENODEV;
+ }
- setup = socdev->codec_data;
codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
if (codec == NULL)
return -ENOMEM;
@@ -1490,15 +1439,13 @@ static int wm8900_probe(struct platform_device *pdev)
codec->set_bias_level = wm8900_set_bias_level;
- wm8900_socdev = socdev;
-#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
- if (setup->i2c_address) {
- codec->hw_write = (hw_write_t)i2c_master_send;
- ret = wm8900_add_i2c_device(pdev, setup);
- }
-#else
-#error Non-I2C interfaces not yet supported
-#endif
+ codec->hw_write = (hw_write_t)i2c_master_send;
+ codec->control_data = wm8900_client;
+
+ ret = wm8900_init(socdev);
+ if (ret != 0)
+ kfree(codec);
+
return ret;
}
@@ -1513,10 +1460,6 @@ static int wm8900_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(&wm8900_i2c_driver);
-#endif
kfree(codec);
return 0;
@@ -1532,13 +1475,13 @@ EXPORT_SYMBOL_GPL(soc_codec_dev_wm8900);
static int __devinit wm8900_modinit(void)
{
- return snd_soc_register_dai(&wm8900_dai);
+ return i2c_add_driver(&wm8900_i2c_driver);
}
module_init(wm8900_modinit);
static void __exit wm8900_exit(void)
{
- snd_soc_unregister_dai(&wm8900_dai);
+ i2c_del_driver(&wm8900_i2c_driver);
}
module_exit(wm8900_exit);