static int wm8523_probe(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct snd_soc_codec *codec;
int ret = 0;
if (wm8523_codec == NULL) {
dev_err(&pdev->dev, "Codec device not registered\n");
return -ENODEV;
}
socdev->card->codec = wm8523_codec;
codec = wm8523_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, wm8523_snd_controls,
ARRAY_SIZE(wm8523_snd_controls));
wm8523_add_widgets(codec);
return ret;
pcm_err:
return ret;
}
static int wm8523_probe(struct snd_soc_codec *codec)
{
struct wm8523_priv *wm8523 = snd_soc_codec_get_drvdata(codec);
int ret, i;
codec->hw_write = (hw_write_t)i2c_master_send;
wm8523->rate_constraint.list = &wm8523->rate_constraint_list[0];
wm8523->rate_constraint.count =
ARRAY_SIZE(wm8523->rate_constraint_list);
ret = snd_soc_codec_set_cache_io(codec, 8, 16, wm8523->control_type);
if (ret != 0) {
dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
return ret;
}
for (i = 0; i < ARRAY_SIZE(wm8523->supplies); i++)
wm8523->supplies[i].supply = wm8523_supply_names[i];
ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8523->supplies),
wm8523->supplies);
if (ret != 0) {
dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
return ret;
}
ret = regulator_bulk_enable(ARRAY_SIZE(wm8523->supplies),
wm8523->supplies);
if (ret != 0) {
dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
goto err_get;
}
ret = snd_soc_read(codec, WM8523_DEVICE_ID);
if (ret < 0) {
dev_err(codec->dev, "Failed to read ID register\n");
goto err_enable;
}
if (ret != wm8523_reg[WM8523_DEVICE_ID]) {
dev_err(codec->dev, "Device is not a WM8523, ID is %x\n", ret);
ret = -EINVAL;
goto err_enable;
}
ret = snd_soc_read(codec, WM8523_REVISION);
if (ret < 0) {
dev_err(codec->dev, "Failed to read revision register\n");
goto err_enable;
}
dev_info(codec->dev, "revision %c\n",
(ret & WM8523_CHIP_REV_MASK) + 'A');
ret = wm8523_reset(codec);
if (ret < 0) {
dev_err(codec->dev, "Failed to issue reset\n");
goto err_enable;
}
/* Change some default settings - latch VU and enable ZC */
snd_soc_update_bits(codec, WM8523_DAC_GAINR,
WM8523_DACR_VU, WM8523_DACR_VU);
snd_soc_update_bits(codec, WM8523_DAC_CTRL3, WM8523_ZC, WM8523_ZC);
wm8523_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
/* Bias level configuration will have done an extra enable */
regulator_bulk_disable(ARRAY_SIZE(wm8523->supplies), wm8523->supplies);
snd_soc_add_controls(codec, wm8523_snd_controls,
ARRAY_SIZE(wm8523_snd_controls));
wm8523_add_widgets(codec);
return 0;
err_enable:
regulator_bulk_disable(ARRAY_SIZE(wm8523->supplies), wm8523->supplies);
err_get:
regulator_bulk_free(ARRAY_SIZE(wm8523->supplies), wm8523->supplies);
return ret;
}
