diff options
Diffstat (limited to 'sound/soc/codecs/wm8731.c')
| -rw-r--r-- | sound/soc/codecs/wm8731.c | 51 |
1 files changed, 28 insertions, 23 deletions
diff --git a/sound/soc/codecs/wm8731.c b/sound/soc/codecs/wm8731.c index c4b63538bb7..2650fac30ee 100644 --- a/sound/soc/codecs/wm8731.c +++ b/sound/soc/codecs/wm8731.c @@ -368,6 +368,10 @@ 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) { + struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); + int i, ret; + u8 data[2]; + u16 *cache = codec->reg_cache; u16 reg; switch (level) { @@ -376,6 +380,24 @@ static int wm8731_set_bias_level(struct snd_soc_codec *codec, case SND_SOC_BIAS_PREPARE: break; case SND_SOC_BIAS_STANDBY: + if (codec->bias_level == SND_SOC_BIAS_OFF) { + ret = regulator_bulk_enable(ARRAY_SIZE(wm8731->supplies), + wm8731->supplies); + if (ret != 0) + return ret; + + /* Sync reg_cache with the hardware */ + for (i = 0; i < ARRAY_SIZE(wm8731_reg); i++) { + if (cache[i] == wm8731_reg[i]) + continue; + + data[0] = (i << 1) | ((cache[i] >> 8) + & 0x0001); + data[1] = cache[i] & 0x00ff; + codec->hw_write(codec->control_data, data, 2); + } + } + /* Clear PWROFF, gate CLKOUT, everything else as-is */ reg = snd_soc_read(codec, WM8731_PWR) & 0xff7f; snd_soc_write(codec, WM8731_PWR, reg | 0x0040); @@ -383,6 +405,8 @@ static int wm8731_set_bias_level(struct snd_soc_codec *codec, case SND_SOC_BIAS_OFF: snd_soc_write(codec, WM8731_ACTIVE, 0x0); snd_soc_write(codec, WM8731_PWR, 0xffff); + regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), + wm8731->supplies); break; } codec->bias_level = level; @@ -427,12 +451,9 @@ 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->card->codec; - struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); - snd_soc_write(codec, WM8731_ACTIVE, 0x0); wm8731_set_bias_level(codec, SND_SOC_BIAS_OFF); - regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), - wm8731->supplies); + return 0; } @@ -440,25 +461,7 @@ static int wm8731_resume(struct platform_device *pdev) { struct snd_soc_device *socdev = platform_get_drvdata(pdev); struct snd_soc_codec *codec = socdev->card->codec; - struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); - int i, ret; - u8 data[2]; - u16 *cache = codec->reg_cache; - - ret = regulator_bulk_enable(ARRAY_SIZE(wm8731->supplies), - wm8731->supplies); - if (ret != 0) - return ret; - - /* Sync reg_cache with the hardware */ - for (i = 0; i < ARRAY_SIZE(wm8731_reg); i++) { - if (cache[i] == wm8731_reg[i]) - continue; - data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); - data[1] = cache[i] & 0x00ff; - codec->hw_write(codec->control_data, data, 2); - } wm8731_set_bias_level(codec, SND_SOC_BIAS_STANDBY); return 0; @@ -603,6 +606,9 @@ static int wm8731_register(struct wm8731_priv *wm8731, goto err_codec; } + /* Regulators will have been enabled by bias management */ + regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies); + return 0; err_codec: @@ -621,7 +627,6 @@ 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); - regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies); regulator_bulk_free(ARRAY_SIZE(wm8731->supplies), wm8731->supplies); kfree(wm8731); wm8731_codec = NULL; |