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Diffstat (limited to 'sound/soc/codecs/wm8731.c')
-rw-r--r--sound/soc/codecs/wm8731.c432
1 files changed, 198 insertions, 234 deletions
diff --git a/sound/soc/codecs/wm8731.c b/sound/soc/codecs/wm8731.c
index c444b9f..e043e3f 100644
--- a/sound/soc/codecs/wm8731.c
+++ b/sound/soc/codecs/wm8731.c
@@ -29,15 +29,20 @@
#include "wm8731.h"
-#define WM8731_VERSION "0.13"
-
+static struct snd_soc_codec *wm8731_codec;
struct snd_soc_codec_device soc_codec_dev_wm8731;
/* codec private data */
struct wm8731_priv {
+ struct snd_soc_codec codec;
+ u16 reg_cache[WM8731_CACHEREGNUM];
unsigned int sysclk;
};
+#ifdef CONFIG_SPI_MASTER
+static int wm8731_spi_write(struct spi_device *spi, const char *data, int len);
+#endif
+
/*
* wm8731 register cache
* We can't read the WM8731 register space when we are
@@ -129,22 +134,6 @@ SOC_SINGLE("Store DC Offset Switch", WM8731_APDIGI, 4, 1, 0),
SOC_ENUM("Playback De-emphasis", wm8731_enum[1]),
};
-/* add non dapm controls */
-static int wm8731_add_controls(struct snd_soc_codec *codec)
-{
- int err, i;
-
- for (i = 0; i < ARRAY_SIZE(wm8731_snd_controls); i++) {
- err = snd_ctl_add(codec->card,
- snd_soc_cnew(&wm8731_snd_controls[i],
- codec, NULL));
- if (err < 0)
- return err;
- }
-
- return 0;
-}
-
/* Output Mixer */
static const struct snd_kcontrol_new wm8731_output_mixer_controls[] = {
SOC_DAPM_SINGLE("Line Bypass Switch", WM8731_APANA, 3, 1, 0),
@@ -269,7 +258,7 @@ static int wm8731_hw_params(struct snd_pcm_substream *substream,
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_device *socdev = rtd->socdev;
- struct snd_soc_codec *codec = socdev->codec;
+ struct snd_soc_codec *codec = socdev->card->codec;
struct wm8731_priv *wm8731 = codec->private_data;
u16 iface = wm8731_read_reg_cache(codec, WM8731_IFACE) & 0xfff3;
int i = get_coeff(wm8731->sysclk, params_rate(params));
@@ -299,7 +288,7 @@ static int wm8731_pcm_prepare(struct snd_pcm_substream *substream,
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_device *socdev = rtd->socdev;
- struct snd_soc_codec *codec = socdev->codec;
+ struct snd_soc_codec *codec = socdev->card->codec;
/* set active */
wm8731_write(codec, WM8731_ACTIVE, 0x0001);
@@ -312,7 +301,7 @@ static void wm8731_shutdown(struct snd_pcm_substream *substream,
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_device *socdev = rtd->socdev;
- struct snd_soc_codec *codec = socdev->codec;
+ struct snd_soc_codec *codec = socdev->card->codec;
/* deactivate */
if (!codec->active) {
@@ -414,21 +403,19 @@ static int wm8731_set_dai_fmt(struct snd_soc_dai *codec_dai,
static int wm8731_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
- u16 reg = wm8731_read_reg_cache(codec, WM8731_PWR) & 0xff7f;
+ u16 reg;
switch (level) {
case SND_SOC_BIAS_ON:
- /* vref/mid, osc on, dac unmute */
- wm8731_write(codec, WM8731_PWR, reg);
break;
case SND_SOC_BIAS_PREPARE:
break;
case SND_SOC_BIAS_STANDBY:
- /* everything off except vref/vmid, */
+ /* Clear PWROFF, gate CLKOUT, everything else as-is */
+ reg = wm8731_read_reg_cache(codec, WM8731_PWR) & 0xff7f;
wm8731_write(codec, WM8731_PWR, reg | 0x0040);
break;
case SND_SOC_BIAS_OFF:
- /* everything off, dac mute, inactive */
wm8731_write(codec, WM8731_ACTIVE, 0x0);
wm8731_write(codec, WM8731_PWR, 0xffff);
break;
@@ -446,6 +433,15 @@ static int wm8731_set_bias_level(struct snd_soc_codec *codec,
#define WM8731_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
SNDRV_PCM_FMTBIT_S24_LE)
+static struct snd_soc_dai_ops wm8731_dai_ops = {
+ .prepare = wm8731_pcm_prepare,
+ .hw_params = wm8731_hw_params,
+ .shutdown = wm8731_shutdown,
+ .digital_mute = wm8731_mute,
+ .set_sysclk = wm8731_set_dai_sysclk,
+ .set_fmt = wm8731_set_dai_fmt,
+};
+
struct snd_soc_dai wm8731_dai = {
.name = "WM8731",
.playback = {
@@ -460,21 +456,14 @@ struct snd_soc_dai wm8731_dai = {
.channels_max = 2,
.rates = WM8731_RATES,
.formats = WM8731_FORMATS,},
- .ops = {
- .prepare = wm8731_pcm_prepare,
- .hw_params = wm8731_hw_params,
- .shutdown = wm8731_shutdown,
- .digital_mute = wm8731_mute,
- .set_sysclk = wm8731_set_dai_sysclk,
- .set_fmt = wm8731_set_dai_fmt,
- }
+ .ops = &wm8731_dai_ops,
};
EXPORT_SYMBOL_GPL(wm8731_dai);
static int wm8731_suspend(struct platform_device *pdev, pm_message_t state)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
- struct snd_soc_codec *codec = socdev->codec;
+ struct snd_soc_codec *codec = socdev->card->codec;
wm8731_write(codec, WM8731_ACTIVE, 0x0);
wm8731_set_bias_level(codec, SND_SOC_BIAS_OFF);
@@ -484,7 +473,7 @@ static int wm8731_suspend(struct platform_device *pdev, pm_message_t state)
static int wm8731_resume(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
- struct snd_soc_codec *codec = socdev->codec;
+ struct snd_soc_codec *codec = socdev->card->codec;
int i;
u8 data[2];
u16 *cache = codec->reg_cache;
@@ -500,54 +489,33 @@ static int wm8731_resume(struct platform_device *pdev)
return 0;
}
-/*
- * initialise the WM8731 driver
- * register the mixer and dsp interfaces with the kernel
- */
-static int wm8731_init(struct snd_soc_device *socdev)
+static int wm8731_probe(struct platform_device *pdev)
{
- struct snd_soc_codec *codec = socdev->codec;
- int reg, ret = 0;
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct snd_soc_codec *codec;
+ int ret = 0;
- codec->name = "WM8731";
- codec->owner = THIS_MODULE;
- codec->read = wm8731_read_reg_cache;
- codec->write = wm8731_write;
- codec->set_bias_level = wm8731_set_bias_level;
- codec->dai = &wm8731_dai;
- codec->num_dai = 1;
- codec->reg_cache_size = ARRAY_SIZE(wm8731_reg);
- codec->reg_cache = kmemdup(wm8731_reg, sizeof(wm8731_reg), GFP_KERNEL);
- if (codec->reg_cache == NULL)
- return -ENOMEM;
+ if (wm8731_codec == NULL) {
+ dev_err(&pdev->dev, "Codec device not registered\n");
+ return -ENODEV;
+ }
- wm8731_reset(codec);
+ socdev->card->codec = wm8731_codec;
+ codec = wm8731_codec;
/* register pcms */
ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
if (ret < 0) {
- printk(KERN_ERR "wm8731: failed to create pcms\n");
+ dev_err(codec->dev, "failed to create pcms: %d\n", ret);
goto pcm_err;
}
- /* power on device */
- wm8731_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
-
- /* set the update bits */
- reg = wm8731_read_reg_cache(codec, WM8731_LOUT1V);
- wm8731_write(codec, WM8731_LOUT1V, reg & ~0x0100);
- reg = wm8731_read_reg_cache(codec, WM8731_ROUT1V);
- wm8731_write(codec, WM8731_ROUT1V, reg & ~0x0100);
- reg = wm8731_read_reg_cache(codec, WM8731_LINVOL);
- wm8731_write(codec, WM8731_LINVOL, reg & ~0x0100);
- reg = wm8731_read_reg_cache(codec, WM8731_RINVOL);
- wm8731_write(codec, WM8731_RINVOL, reg & ~0x0100);
-
- wm8731_add_controls(codec);
+ snd_soc_add_controls(codec, wm8731_snd_controls,
+ ARRAY_SIZE(wm8731_snd_controls));
wm8731_add_widgets(codec);
ret = snd_soc_init_card(socdev);
if (ret < 0) {
- printk(KERN_ERR "wm8731: failed to register card\n");
+ dev_err(codec->dev, "failed to register card: %d\n", ret);
goto card_err;
}
@@ -557,133 +525,109 @@ 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 *wm8731_socdev;
-
-#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
-
-/*
- * WM8731 2 wire address is determined by GPIO5
- * state during powerup.
- * low = 0x1a
- * high = 0x1b
- */
-
-static int wm8731_i2c_probe(struct i2c_client *i2c,
- const struct i2c_device_id *id)
+/* power down chip */
+static int wm8731_remove(struct platform_device *pdev)
{
- struct snd_soc_device *socdev = wm8731_socdev;
- struct snd_soc_codec *codec = socdev->codec;
- int ret;
-
- i2c_set_clientdata(i2c, codec);
- codec->control_data = i2c;
-
- ret = wm8731_init(socdev);
- if (ret < 0)
- pr_err("failed to initialise WM8731\n");
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
- return ret;
-}
+ snd_soc_free_pcms(socdev);
+ snd_soc_dapm_free(socdev);
-static int wm8731_i2c_remove(struct i2c_client *client)
-{
- struct snd_soc_codec *codec = i2c_get_clientdata(client);
- kfree(codec->reg_cache);
return 0;
}
-static const struct i2c_device_id wm8731_i2c_id[] = {
- { "wm8731", 0 },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, wm8731_i2c_id);
-
-static struct i2c_driver wm8731_i2c_driver = {
- .driver = {
- .name = "WM8731 I2C Codec",
- .owner = THIS_MODULE,
- },
- .probe = wm8731_i2c_probe,
- .remove = wm8731_i2c_remove,
- .id_table = wm8731_i2c_id,
+struct snd_soc_codec_device soc_codec_dev_wm8731 = {
+ .probe = wm8731_probe,
+ .remove = wm8731_remove,
+ .suspend = wm8731_suspend,
+ .resume = wm8731_resume,
};
+EXPORT_SYMBOL_GPL(soc_codec_dev_wm8731);
-static int wm8731_add_i2c_device(struct platform_device *pdev,
- const struct wm8731_setup_data *setup)
+static int wm8731_register(struct wm8731_priv *wm8731)
{
- struct i2c_board_info info;
- struct i2c_adapter *adapter;
- struct i2c_client *client;
int ret;
+ struct snd_soc_codec *codec = &wm8731->codec;
+ u16 reg;
- ret = i2c_add_driver(&wm8731_i2c_driver);
- if (ret != 0) {
- dev_err(&pdev->dev, "can't add i2c driver\n");
- return ret;
+ if (wm8731_codec) {
+ dev_err(codec->dev, "Another WM8731 is registered\n");
+ return -EINVAL;
}
- memset(&info, 0, sizeof(struct i2c_board_info));
- info.addr = setup->i2c_address;
- strlcpy(info.type, "wm8731", I2C_NAME_SIZE);
+ mutex_init(&codec->mutex);
+ INIT_LIST_HEAD(&codec->dapm_widgets);
+ INIT_LIST_HEAD(&codec->dapm_paths);
- 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;
- }
+ codec->private_data = wm8731;
+ codec->name = "WM8731";
+ codec->owner = THIS_MODULE;
+ codec->read = wm8731_read_reg_cache;
+ codec->write = wm8731_write;
+ codec->bias_level = SND_SOC_BIAS_OFF;
+ codec->set_bias_level = wm8731_set_bias_level;
+ codec->dai = &wm8731_dai;
+ codec->num_dai = 1;
+ codec->reg_cache_size = WM8731_CACHEREGNUM;
+ codec->reg_cache = &wm8731->reg_cache;
- 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;
+ memcpy(codec->reg_cache, wm8731_reg, sizeof(wm8731_reg));
+
+ ret = wm8731_reset(codec);
+ if (ret < 0) {
+ dev_err(codec->dev, "Failed to issue reset\n");
+ return ret;
}
- return 0;
+ wm8731_dai.dev = codec->dev;
-err_driver:
- i2c_del_driver(&wm8731_i2c_driver);
- return -ENODEV;
-}
-#endif
+ wm8731_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
-#if defined(CONFIG_SPI_MASTER)
-static int __devinit wm8731_spi_probe(struct spi_device *spi)
-{
- struct snd_soc_device *socdev = wm8731_socdev;
- struct snd_soc_codec *codec = socdev->codec;
- int ret;
+ /* Latch the update bits */
+ reg = wm8731_read_reg_cache(codec, WM8731_LOUT1V);
+ wm8731_write(codec, WM8731_LOUT1V, reg & ~0x0100);
+ reg = wm8731_read_reg_cache(codec, WM8731_ROUT1V);
+ wm8731_write(codec, WM8731_ROUT1V, reg & ~0x0100);
+ reg = wm8731_read_reg_cache(codec, WM8731_LINVOL);
+ wm8731_write(codec, WM8731_LINVOL, reg & ~0x0100);
+ reg = wm8731_read_reg_cache(codec, WM8731_RINVOL);
+ wm8731_write(codec, WM8731_RINVOL, reg & ~0x0100);
- codec->control_data = spi;
+ /* Disable bypass path by default */
+ reg = wm8731_read_reg_cache(codec, WM8731_APANA);
+ wm8731_write(codec, WM8731_APANA, reg & ~0x4);
- ret = wm8731_init(socdev);
- if (ret < 0)
- dev_err(&spi->dev, "failed to initialise WM8731\n");
+ wm8731_codec = codec;
- return ret;
-}
+ 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(&wm8731_dai);
+ if (ret != 0) {
+ dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
+ snd_soc_unregister_codec(codec);
+ return ret;
+ }
-static int __devexit wm8731_spi_remove(struct spi_device *spi)
-{
return 0;
}
-static struct spi_driver wm8731_spi_driver = {
- .driver = {
- .name = "wm8731",
- .bus = &spi_bus_type,
- .owner = THIS_MODULE,
- },
- .probe = wm8731_spi_probe,
- .remove = __devexit_p(wm8731_spi_remove),
-};
+static void wm8731_unregister(struct wm8731_priv *wm8731)
+{
+ wm8731_set_bias_level(&wm8731->codec, SND_SOC_BIAS_OFF);
+ snd_soc_unregister_dai(&wm8731_dai);
+ snd_soc_unregister_codec(&wm8731->codec);
+ kfree(wm8731);
+ wm8731_codec = NULL;
+}
+#if defined(CONFIG_SPI_MASTER)
static int wm8731_spi_write(struct spi_device *spi, const char *data, int len)
{
struct spi_transfer t;
@@ -707,101 +651,121 @@ static int wm8731_spi_write(struct spi_device *spi, const char *data, int len)
return len;
}
-#endif /* CONFIG_SPI_MASTER */
-static int wm8731_probe(struct platform_device *pdev)
+static int __devinit wm8731_spi_probe(struct spi_device *spi)
{
- struct snd_soc_device *socdev = platform_get_drvdata(pdev);
- struct wm8731_setup_data *setup;
struct snd_soc_codec *codec;
struct wm8731_priv *wm8731;
- int ret = 0;
-
- pr_info("WM8731 Audio Codec %s", WM8731_VERSION);
-
- setup = socdev->codec_data;
- codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
- if (codec == NULL)
- return -ENOMEM;
wm8731 = kzalloc(sizeof(struct wm8731_priv), GFP_KERNEL);
- if (wm8731 == NULL) {
- kfree(codec);
+ if (wm8731 == NULL)
return -ENOMEM;
- }
- codec->private_data = wm8731;
- socdev->codec = codec;
- mutex_init(&codec->mutex);
- INIT_LIST_HEAD(&codec->dapm_widgets);
- INIT_LIST_HEAD(&codec->dapm_paths);
+ codec = &wm8731->codec;
+ codec->control_data = spi;
+ codec->hw_write = (hw_write_t)wm8731_spi_write;
+ codec->dev = &spi->dev;
- wm8731_socdev = socdev;
- ret = -ENODEV;
+ spi->dev.driver_data = wm8731;
-#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
- if (setup->i2c_address) {
- codec->hw_write = (hw_write_t)i2c_master_send;
- ret = wm8731_add_i2c_device(pdev, setup);
- }
-#endif
-#if defined(CONFIG_SPI_MASTER)
- if (setup->spi) {
- codec->hw_write = (hw_write_t)wm8731_spi_write;
- ret = spi_register_driver(&wm8731_spi_driver);
- if (ret != 0)
- printk(KERN_ERR "can't add spi driver");
- }
-#endif
-
- if (ret != 0) {
- kfree(codec->private_data);
- kfree(codec);
- }
- return ret;
+ return wm8731_register(wm8731);
}
-/* power down chip */
-static int wm8731_remove(struct platform_device *pdev)
+static int __devexit wm8731_spi_remove(struct spi_device *spi)
{
- struct snd_soc_device *socdev = platform_get_drvdata(pdev);
- struct snd_soc_codec *codec = socdev->codec;
+ struct wm8731_priv *wm8731 = spi->dev.driver_data;
- if (codec->control_data)
- wm8731_set_bias_level(codec, SND_SOC_BIAS_OFF);
+ wm8731_unregister(wm8731);
+
+ return 0;
+}
+
+static struct spi_driver wm8731_spi_driver = {
+ .driver = {
+ .name = "wm8731",
+ .bus = &spi_bus_type,
+ .owner = THIS_MODULE,
+ },
+ .probe = wm8731_spi_probe,
+ .remove = __devexit_p(wm8731_spi_remove),
+};
+#endif /* CONFIG_SPI_MASTER */
- 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(&wm8731_i2c_driver);
-#endif
-#if defined(CONFIG_SPI_MASTER)
- spi_unregister_driver(&wm8731_spi_driver);
-#endif
- kfree(codec->private_data);
- kfree(codec);
+static __devinit int wm8731_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ struct wm8731_priv *wm8731;
+ struct snd_soc_codec *codec;
+
+ wm8731 = kzalloc(sizeof(struct wm8731_priv), GFP_KERNEL);
+ if (wm8731 == NULL)
+ return -ENOMEM;
+
+ codec = &wm8731->codec;
+ codec->hw_write = (hw_write_t)i2c_master_send;
+ i2c_set_clientdata(i2c, wm8731);
+ codec->control_data = i2c;
+
+ codec->dev = &i2c->dev;
+
+ return wm8731_register(wm8731);
+}
+
+static __devexit int wm8731_i2c_remove(struct i2c_client *client)
+{
+ struct wm8731_priv *wm8731 = i2c_get_clientdata(client);
+ wm8731_unregister(wm8731);
return 0;
}
-struct snd_soc_codec_device soc_codec_dev_wm8731 = {
- .probe = wm8731_probe,
- .remove = wm8731_remove,
- .suspend = wm8731_suspend,
- .resume = wm8731_resume,
+static const struct i2c_device_id wm8731_i2c_id[] = {
+ { "wm8731", 0 },
+ { }
};
-EXPORT_SYMBOL_GPL(soc_codec_dev_wm8731);
+MODULE_DEVICE_TABLE(i2c, wm8731_i2c_id);
+
+static struct i2c_driver wm8731_i2c_driver = {
+ .driver = {
+ .name = "WM8731 I2C Codec",
+ .owner = THIS_MODULE,
+ },
+ .probe = wm8731_i2c_probe,
+ .remove = __devexit_p(wm8731_i2c_remove),
+ .id_table = wm8731_i2c_id,
+};
+#endif
static int __init wm8731_modinit(void)
{
- return snd_soc_register_dai(&wm8731_dai);
+ int ret;
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+ ret = i2c_add_driver(&wm8731_i2c_driver);
+ if (ret != 0) {
+ printk(KERN_ERR "Failed to register WM8731 I2C driver: %d\n",
+ ret);
+ }
+#endif
+#if defined(CONFIG_SPI_MASTER)
+ ret = spi_register_driver(&wm8731_spi_driver);
+ if (ret != 0) {
+ printk(KERN_ERR "Failed to register WM8731 SPI driver: %d\n",
+ ret);
+ }
+#endif
+ return 0;
}
module_init(wm8731_modinit);
static void __exit wm8731_exit(void)
{
- snd_soc_unregister_dai(&wm8731_dai);
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+ i2c_del_driver(&wm8731_i2c_driver);
+#endif
+#if defined(CONFIG_SPI_MASTER)
+ spi_unregister_driver(&wm8731_spi_driver);
+#endif
}
module_exit(wm8731_exit);
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