diff options
| -rw-r--r-- | sound/soc/codecs/wm8711.c | 297 |
1 files changed, 129 insertions, 168 deletions
diff --git a/sound/soc/codecs/wm8711.c b/sound/soc/codecs/wm8711.c index 84ead3f9293f..812283e27603 100644 --- a/sound/soc/codecs/wm8711.c +++ b/sound/soc/codecs/wm8711.c @@ -28,11 +28,12 @@ #include "wm8711.h" -#define AUDIO_NAME "wm8711" -#define WM8711_VERSION "0.3" +static struct snd_soc_codec *wm8711_codec; /* codec private data */ struct wm8711_priv { + struct snd_soc_codec codec; + u16 reg_cache[WM8711_CACHEREGNUM]; unsigned int sysclk; }; @@ -442,241 +443,201 @@ static int wm8711_resume(struct platform_device *pdev) return 0; } -/* - * initialise the WM8711 driver - * register the mixer and dsp interfaces with the kernel - */ -static int wm8711_init(struct snd_soc_device *socdev) +static int wm8711_probe(struct platform_device *pdev) { - struct snd_soc_codec *codec = socdev->card->codec; - int reg, ret = 0; - - codec->name = "WM8711"; - codec->owner = THIS_MODULE; - codec->read = wm8711_read_reg_cache; - codec->write = wm8711_write; - codec->set_bias_level = wm8711_set_bias_level; - codec->dai = &wm8711_dai; - codec->num_dai = 1; - codec->reg_cache_size = ARRAY_SIZE(wm8711_reg); - codec->reg_cache = kmemdup(wm8711_reg, sizeof(wm8711_reg), GFP_KERNEL); + struct snd_soc_device *socdev = platform_get_drvdata(pdev); + struct snd_soc_codec *codec; + int ret = 0; - if (codec->reg_cache == NULL) - return -ENOMEM; + if (wm8711_codec == NULL) { + dev_err(&pdev->dev, "Codec device not registered\n"); + return -ENODEV; + } - wm8711_reset(codec); + socdev->card->codec = wm8711_codec; + codec = wm8711_codec; /* register pcms */ ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); if (ret < 0) { - printk(KERN_ERR "wm8711: failed to create pcms\n"); + dev_err(codec->dev, "failed to create pcms: %d\n", ret); goto pcm_err; } - /* power on device */ - wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY); - - /* set the update bits */ - reg = wm8711_read_reg_cache(codec, WM8711_LOUT1V); - wm8711_write(codec, WM8711_LOUT1V, reg | 0x0100); - reg = wm8711_read_reg_cache(codec, WM8711_ROUT1V); - wm8711_write(codec, WM8711_ROUT1V, reg | 0x0100); - - wm8711_add_controls(codec); + snd_soc_add_controls(codec, wm8711_snd_controls, + ARRAY_SIZE(wm8711_snd_controls)); wm8711_add_widgets(codec); ret = snd_soc_init_card(socdev); if (ret < 0) { - printk(KERN_ERR "wm8711: failed to register card\n"); + dev_err(codec->dev, "failed to register card: %d\n", ret); goto card_err; } + return ret; card_err: snd_soc_free_pcms(socdev); snd_soc_dapm_free(socdev); pcm_err: - kfree(codec->reg_cache); return ret; } -static struct snd_soc_device *wm8711_socdev; - -#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) - -/* - * WM8711 2 wire address is determined by GPIO5 - * state during powerup. - * low = 0x1a - * high = 0x1b - */ -#define I2C_DRIVERID_WM8711 0xfefe /* liam - need a proper id */ - -static unsigned short normal_i2c[] = { 0, I2C_CLIENT_END }; +/* power down chip */ +static int wm8711_remove(struct platform_device *pdev) +{ + struct snd_soc_device *socdev = platform_get_drvdata(pdev); -/* Magic definition of all other variables and things */ -I2C_CLIENT_INSMOD; + snd_soc_free_pcms(socdev); + snd_soc_dapm_free(socdev); -static struct i2c_driver wm8711_i2c_driver; -static struct i2c_client client_template; + return 0; +} -/* If the i2c layer weren't so broken, we could pass this kind of data - around */ +struct snd_soc_codec_device soc_codec_dev_wm8711 = { + .probe = wm8711_probe, + .remove = wm8711_remove, + .suspend = wm8711_suspend, + .resume = wm8711_resume, +}; +EXPORT_SYMBOL_GPL(soc_codec_dev_wm8711); -static int wm8711_codec_probe(struct i2c_adapter *adap, int addr, int kind) +static int wm8711_register(struct wm8711_priv *wm8711) { - struct snd_soc_device *socdev = wm8711_socdev; - struct wm8711_setup_data *setup = socdev->codec_data; - struct snd_soc_codec *codec = socdev->card->codec; - struct i2c_client *i2c; int ret; + struct snd_soc_codec *codec = &wm8711->codec; + u16 reg; - 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) { - kfree(codec); - return -ENOMEM; + if (wm8711_codec) { + dev_err(codec->dev, "Another WM8711 is registered\n"); + return -EINVAL; } - i2c_set_clientdata(i2c, codec); + mutex_init(&codec->mutex); + INIT_LIST_HEAD(&codec->dapm_widgets); + INIT_LIST_HEAD(&codec->dapm_paths); - codec->control_data = i2c; + codec->private_data = wm8711; + codec->name = "WM8711"; + codec->owner = THIS_MODULE; + codec->read = wm8711_read_reg_cache; + codec->write = wm8711_write; + codec->bias_level = SND_SOC_BIAS_OFF; + codec->set_bias_level = wm8711_set_bias_level; + codec->dai = &wm8711_dai; + codec->num_dai = 1; + codec->reg_cache_size = WM8711_CACHEREGNUM; + codec->reg_cache = &wm8711->reg_cache; - ret = i2c_attach_client(i2c); - if (ret < 0) { - pr_err("failed to attach codec at addr %x\n", addr); - goto err; - } + memcpy(codec->reg_cache, wm8711_reg, sizeof(wm8711_reg)); - ret = wm8711_init(socdev); + ret = wm8711_reset(codec); if (ret < 0) { - pr_err("failed to initialise WM8711\n"); - goto err; + dev_err(codec->dev, "Failed to issue reset\n"); + return ret; } - return ret; -err: - kfree(codec); - kfree(i2c); - return ret; -} + wm8711_dai.dev = codec->dev; -static int wm8711_i2c_detach(struct i2c_client *client) -{ - struct snd_soc_codec *codec = i2c_get_clientdata(client); + wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY); + + /* Latch the update bits */ + reg = wm8711_read_reg_cache(codec, WM8711_LOUT1V); + wm8711_write(codec, WM8711_LOUT1V, reg | 0x0100); + reg = wm8711_read_reg_cache(codec, WM8711_ROUT1V); + wm8711_write(codec, WM8711_ROUT1V, reg | 0x0100); + + wm8711_codec = codec; + + ret = snd_soc_register_codec(codec); + if (ret != 0) { + dev_err(codec->dev, "Failed to register codec: %d\n", ret); + return ret; + } + + ret = snd_soc_register_dai(&wm8711_dai); + if (ret != 0) { + dev_err(codec->dev, "Failed to register DAI: %d\n", ret); + snd_soc_unregister_codec(codec); + return ret; + } - i2c_detach_client(client); - kfree(codec->reg_cache); - kfree(client); return 0; } -static int wm8711_i2c_attach(struct i2c_adapter *adap) +static void wm8711_unregister(struct wm8711_priv *wm8711) { - return i2c_probe(adap, &addr_data, wm8711_codec_probe); + wm8711_set_bias_level(&wm8711->codec, SND_SOC_BIAS_OFF); + snd_soc_unregister_dai(&wm8711_dai); + snd_soc_unregister_codec(&wm8711->codec); + kfree(wm8711); + wm8711_codec = NULL; } -/* corgi i2c codec control layer */ -static struct i2c_driver wm8711_i2c_driver = { - .driver = { - .name = "WM8711 I2C Codec", - .owner = THIS_MODULE, - }, - .id = I2C_DRIVERID_WM8711, - .attach_adapter = wm8711_i2c_attach, - .detach_client = wm8711_i2c_detach, - .command = NULL, -}; - -static struct i2c_client client_template = { - .name = "WM8711", - .driver = &wm8711_i2c_driver, -}; -#endif - -static int wm8711_probe(struct platform_device *pdev) +#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) +static __devinit int wm8711_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) { - struct snd_soc_device *socdev = platform_get_drvdata(pdev); - struct wm8711_setup_data *setup; - struct snd_soc_codec *codec; struct wm8711_priv *wm8711; - int ret = 0; - - pr_info("WM8711 Audio Codec %s", WM8711_VERSION); - - setup = socdev->codec_data; - codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); - if (codec == NULL) - return -ENOMEM; + struct snd_soc_codec *codec; wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL); - if (wm8711 == NULL) { - kfree(codec); + if (wm8711 == NULL) return -ENOMEM; - } - codec->private_data = wm8711; - socdev->card->codec = codec; - mutex_init(&codec->mutex); - INIT_LIST_HEAD(&codec->dapm_widgets); - INIT_LIST_HEAD(&codec->dapm_paths); - - wm8711_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; - ret = i2c_add_driver(&wm8711_i2c_driver); - if (ret != 0) - printk(KERN_ERR "can't add i2c driver"); - } -#else - /* Add other interfaces here */ -#endif - return ret; -} + codec = &wm8711->codec; + codec->hw_write = (hw_write_t)i2c_master_send; -/* power down chip */ -static int wm8711_remove(struct platform_device *pdev) -{ - struct snd_soc_device *socdev = platform_get_drvdata(pdev); - struct snd_soc_codec *codec = socdev->card->codec; + i2c_set_clientdata(i2c, wm8711); + codec->control_data = i2c; - if (codec->control_data) - wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF); + codec->dev = &i2c->dev; - snd_soc_free_pcms(socdev); - snd_soc_dapm_free(socdev); -#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) - i2c_del_driver(&wm8711_i2c_driver); -#endif - kfree(codec->private_data); - kfree(codec); + return wm8711_register(wm8711); +} +static __devexit int wm8711_i2c_remove(struct i2c_client *client) +{ + struct wm8711_priv *wm8711 = i2c_get_clientdata(client); + wm8711_unregister(wm8711); return 0; } -struct snd_soc_codec_device soc_codec_dev_wm8711 = { - .probe = wm8711_probe, - .remove = wm8711_remove, - .suspend = wm8711_suspend, - .resume = wm8711_resume, +static const struct i2c_device_id wm8711_i2c_id[] = { + { "wm8711", 0 }, + { } }; -EXPORT_SYMBOL_GPL(soc_codec_dev_wm8711); +MODULE_DEVICE_TABLE(i2c, wm8711_i2c_id); + +static struct i2c_driver wm8711_i2c_driver = { + .driver = { + .name = "WM8711 I2C Codec", + .owner = THIS_MODULE, + }, + .probe = wm8711_i2c_probe, + .remove = __devexit_p(wm8711_i2c_remove), + .id_table = wm8711_i2c_id, +}; +#endif static int __init wm8711_modinit(void) { - return snd_soc_register_dai(&wm8711_dai); + int ret; +#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) + ret = i2c_add_driver(&wm8711_i2c_driver); + if (ret != 0) { + printk(KERN_ERR "Failed to register WM8711 I2C driver: %d\n", + ret); + } +#endif + return 0; } module_init(wm8711_modinit); static void __exit wm8711_exit(void) { - snd_soc_unregister_dai(&wm8711_dai); +#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) + i2c_del_driver(&wm8711_i2c_driver); +#endif } module_exit(wm8711_exit); |