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1 解决开关机pop音. 2 当音乐停止播放、录音时关闭codec降低功耗.

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This commit is contained in:
ChenJQ
2011-04-06 03:34:51 -07:00
parent ee82d460ae
commit 7413e6f89a
1 changed files with 37 additions and 6 deletions
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43
sound/soc/codecs/wm8900.c
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@@ -1071,6 +1071,40 @@ static int wm8900_digital_mute(struct snd_soc_dai *codec_dai, int mute)
return 0;
}
static int wm8900_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *codec_dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_device *socdev = rtd->socdev;
struct snd_soc_card *card = socdev->card;
struct snd_soc_codec *codec = card->codec;
printk("wm8900_shutdown \n");
snd_soc_write(codec, WM8900_REG_RESET, 0);
//open SPK control GPIO
gpio_request(SPK_CON, NULL);
gpio_direction_output(SPK_CON,GPIO_LOW);
gpio_free(SPK_CON);
return 0;
}
static int wm8900_prepare(struct snd_pcm_substream *substream, struct snd_soc_dai *codec_dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_device *socdev = rtd->socdev;
struct snd_soc_card *card = socdev->card;
struct snd_soc_codec *codec = card->codec;
printk("wm8900_prepare \n");
wm8900_set_hw(codec);
return 0;
}
#ifdef CONFIG_MACH_RK29_MALATA
static int wm8900_trigger(struct snd_pcm_substream *substream, int trigger)
{
@@ -1097,6 +1131,8 @@ static struct snd_soc_dai_ops wm8900_dai_ops = {
.set_pll = wm8900_set_dai_pll,
.set_fmt = wm8900_set_dai_fmt,
.digital_mute = wm8900_digital_mute,
.shutdown = wm8900_shutdown,
.prepare = wm8900_prepare,
#ifdef CONFIG_MACH_RK29_MALATA
.trigger = wm8900_trigger,
#endif
@@ -1227,7 +1263,7 @@ static int wm8900_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 wm8900_priv *wm8900 = codec->private_data;
int fll_out = wm8900->fll_out;
int fll_in = wm8900->fll_in;
int ret;
@@ -1263,9 +1299,6 @@ static int wm8900_resume(struct platform_device *pdev)
struct wm8900_priv *wm8900 = codec->private_data;
int ret;
msleep(50);
wm8900_set_hw(codec);
wm8900_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
/* Restart the FLL? */
@@ -1465,8 +1498,6 @@ static int wm8900_probe(struct platform_device *pdev)
goto card_err;
}
wm8900_set_hw(codec);
return ret;
card_err: