#include "wm8978.h"
-static struct snd_soc_codec *wm8978_codec;
-
/* wm8978 register cache. Note that register 0 is not included in the cache. */
static const u16 wm8978_reg[WM8978_CACHEREGNUM] = {
0x0000, 0x0000, 0x0000, 0x0000, /* 0x00...0x03 */
/* codec private data */
struct wm8978_priv {
- struct snd_soc_codec codec;
+ enum snd_soc_control_type control_type;
+ void *control_data;
unsigned int f_pllout;
unsigned int f_mclk;
unsigned int f_256fs;
#define FIXED_PLL_SIZE (1 << 24)
-static void pll_factors(struct wm8978_pll_div *pll_div, unsigned int target,
- unsigned int source)
+static void pll_factors(struct snd_soc_codec *codec,
+ struct wm8978_pll_div *pll_div, unsigned int target, unsigned int source)
{
u64 k_part;
unsigned int k, n_div, n_mod;
}
if (n_div < 6 || n_div > 12)
- dev_warn(wm8978_codec->dev,
+ dev_warn(codec->dev,
"WM8978 N value exceeds recommended range! N = %u\n",
n_div);
dev_dbg(codec->dev, "%s: f_MCLK=%uHz, f_PLLOUT=%uHz\n", __func__,
wm8978->f_mclk, wm8978->f_pllout);
- pll_factors(&pll_div, f2, wm8978->f_mclk);
+ pll_factors(codec, &pll_div, f2, wm8978->f_mclk);
dev_dbg(codec->dev, "%s: calculated PLL N=0x%x, K=0x%x, div2=%d\n",
__func__, pll_div.n, pll_div.k, pll_div.div2);
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_device *socdev = rtd->socdev;
- struct snd_soc_codec *codec = socdev->card->codec;
+ struct snd_soc_codec *codec = rtd->codec;
struct wm8978_priv *wm8978 = snd_soc_codec_get_drvdata(codec);
/* Word length mask = 0x60 */
u16 iface_ctl = snd_soc_read(codec, WM8978_AUDIO_INTERFACE) & ~0x60;
};
/* Also supports 12kHz */
-struct snd_soc_dai wm8978_dai = {
- .name = "WM8978 HiFi",
- .id = 1,
+static struct snd_soc_dai_driver wm8978_dai = {
+ .name = "wm8978-hifi",
.playback = {
.stream_name = "Playback",
.channels_min = 1,
},
.ops = &wm8978_dai_ops,
};
-EXPORT_SYMBOL_GPL(wm8978_dai);
-static int wm8978_suspend(struct platform_device *pdev, pm_message_t state)
+static int wm8978_suspend(struct snd_soc_codec *codec, pm_message_t state)
{
- struct snd_soc_device *socdev = platform_get_drvdata(pdev);
- struct snd_soc_codec *codec = socdev->card->codec;
-
wm8978_set_bias_level(codec, SND_SOC_BIAS_OFF);
/* Also switch PLL off */
snd_soc_write(codec, WM8978_POWER_MANAGEMENT_1, 0);
return 0;
}
-static int wm8978_resume(struct platform_device *pdev)
+static int wm8978_resume(struct snd_soc_codec *codec)
{
- struct snd_soc_device *socdev = platform_get_drvdata(pdev);
- struct snd_soc_codec *codec = socdev->card->codec;
struct wm8978_priv *wm8978 = snd_soc_codec_get_drvdata(codec);
int i;
u16 *cache = codec->reg_cache;
return 0;
}
-static int wm8978_probe(struct platform_device *pdev)
-{
- struct snd_soc_device *socdev = platform_get_drvdata(pdev);
- struct snd_soc_codec *codec;
- int ret = 0;
-
- if (wm8978_codec == NULL) {
- dev_err(&pdev->dev, "Codec device not registered\n");
- return -ENODEV;
- }
-
- socdev->card->codec = wm8978_codec;
- codec = wm8978_codec;
-
- /* register pcms */
- ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
- if (ret < 0) {
- dev_err(codec->dev, "failed to create pcms: %d\n", ret);
- goto pcm_err;
- }
-
- snd_soc_add_controls(codec, wm8978_snd_controls,
- ARRAY_SIZE(wm8978_snd_controls));
- wm8978_add_widgets(codec);
-
-pcm_err:
- return ret;
-}
-
-/* power down chip */
-static int wm8978_remove(struct platform_device *pdev)
-{
- struct snd_soc_device *socdev = platform_get_drvdata(pdev);
-
- snd_soc_free_pcms(socdev);
- snd_soc_dapm_free(socdev);
-
- return 0;
-}
-
-struct snd_soc_codec_device soc_codec_dev_wm8978 = {
- .probe = wm8978_probe,
- .remove = wm8978_remove,
- .suspend = wm8978_suspend,
- .resume = wm8978_resume,
-};
-EXPORT_SYMBOL_GPL(soc_codec_dev_wm8978);
-
/*
* These registers contain an "update" bit - bit 8. This means, for example,
* that one can write new DAC digital volume for both channels, but only when
WM8978_ROUT2_SPK_CONTROL,
};
-static __devinit int wm8978_register(struct wm8978_priv *wm8978)
+static int wm8978_probe(struct snd_soc_codec *codec)
{
- int ret, i;
- struct snd_soc_codec *codec = &wm8978->codec;
-
- if (wm8978_codec) {
- dev_err(codec->dev, "Another WM8978 is registered\n");
- return -EINVAL;
- }
+ struct wm8978_priv *wm8978 = snd_soc_codec_get_drvdata(codec);
+ int ret = 0, i;
/*
* Set default system clock to PLL, it is more precise, this is also the
* default hardware setting
*/
wm8978->sysclk = WM8978_PLL;
-
- mutex_init(&codec->mutex);
- INIT_LIST_HEAD(&codec->dapm_widgets);
- INIT_LIST_HEAD(&codec->dapm_paths);
-
- snd_soc_codec_set_drvdata(codec, wm8978);
- codec->name = "WM8978";
- codec->owner = THIS_MODULE;
- codec->bias_level = SND_SOC_BIAS_OFF;
- codec->set_bias_level = wm8978_set_bias_level;
- codec->dai = &wm8978_dai;
- codec->num_dai = 1;
- codec->reg_cache_size = WM8978_CACHEREGNUM;
- codec->reg_cache = &wm8978->reg_cache;
-
+ codec->control_data = wm8978->control_data;
ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_I2C);
if (ret < 0) {
dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
- goto err;
+ return ret;
}
- memcpy(codec->reg_cache, wm8978_reg, sizeof(wm8978_reg));
-
/*
* Set the update bit in all registers, that have one. This way all
* writes to those registers will also cause the update bit to be
ret = snd_soc_write(codec, WM8978_RESET, 0);
if (ret < 0) {
dev_err(codec->dev, "Failed to issue reset\n");
- goto err;
+ return ret;
}
- wm8978_dai.dev = codec->dev;
-
wm8978_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
- wm8978_codec = codec;
-
- ret = snd_soc_register_codec(codec);
- if (ret != 0) {
- dev_err(codec->dev, "Failed to register codec: %d\n", ret);
- goto err;
- }
-
- ret = snd_soc_register_dai(&wm8978_dai);
- if (ret != 0) {
- dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
- goto err_codec;
- }
+ snd_soc_add_controls(codec, wm8978_snd_controls,
+ ARRAY_SIZE(wm8978_snd_controls));
+ wm8978_add_widgets(codec);
return 0;
-
-err_codec:
- snd_soc_unregister_codec(codec);
-err:
- return ret;
}
-static __devexit void wm8978_unregister(struct wm8978_priv *wm8978)
+/* power down chip */
+static int wm8978_remove(struct snd_soc_codec *codec)
{
- wm8978_set_bias_level(&wm8978->codec, SND_SOC_BIAS_OFF);
- snd_soc_unregister_dai(&wm8978_dai);
- snd_soc_unregister_codec(&wm8978->codec);
- wm8978_codec = NULL;
+ wm8978_set_bias_level(codec, SND_SOC_BIAS_OFF);
+ return 0;
}
+static struct snd_soc_codec_driver soc_codec_dev_wm8978 = {
+ .probe = wm8978_probe,
+ .remove = wm8978_remove,
+ .suspend = wm8978_suspend,
+ .resume = wm8978_resume,
+ .set_bias_level = wm8978_set_bias_level,
+ .reg_cache_size = ARRAY_SIZE(wm8978_reg),
+ .reg_word_size = sizeof(u16),
+ .reg_cache_default = wm8978_reg,
+};
+
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
static __devinit int wm8978_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
- int ret;
struct wm8978_priv *wm8978;
- struct snd_soc_codec *codec;
+ int ret;
wm8978 = kzalloc(sizeof(struct wm8978_priv), GFP_KERNEL);
if (wm8978 == NULL)
return -ENOMEM;
- codec = &wm8978->codec;
- codec->hw_write = (hw_write_t)i2c_master_send;
-
i2c_set_clientdata(i2c, wm8978);
- codec->control_data = i2c;
-
- codec->dev = &i2c->dev;
+ wm8978->control_data = i2c;
- ret = wm8978_register(wm8978);
+ ret = snd_soc_register_codec(&i2c->dev,
+ &soc_codec_dev_wm8978, &wm8978_dai, 1);
if (ret < 0)
kfree(wm8978);
-
return ret;
}
static __devexit int wm8978_i2c_remove(struct i2c_client *client)
{
- struct wm8978_priv *wm8978 = i2c_get_clientdata(client);
- wm8978_unregister(wm8978);
- kfree(wm8978);
+ snd_soc_unregister_codec(&client->dev);
+ kfree(i2c_get_clientdata(client));
return 0;
}
static struct i2c_driver wm8978_i2c_driver = {
.driver = {
- .name = "WM8978",
+ .name = "wm8978",
.owner = THIS_MODULE,
},
.probe = wm8978_i2c_probe,
.remove = __devexit_p(wm8978_i2c_remove),
.id_table = wm8978_i2c_id,
};
+#endif
static int __init wm8978_modinit(void)
{
- return i2c_add_driver(&wm8978_i2c_driver);
+ int ret = 0;
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+ ret = i2c_add_driver(&wm8978_i2c_driver);
+ if (ret != 0) {
+ printk(KERN_ERR "Failed to register WM8978 I2C driver: %d\n",
+ ret);
+ }
+#endif
+ return ret;
}
module_init(wm8978_modinit);
static void __exit wm8978_exit(void)
{
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
i2c_del_driver(&wm8978_i2c_driver);
+#endif
}
module_exit(wm8978_exit);
projects / mv-sheeva.git / blobdiff