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Use gpio for codec pop noise

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This commit is contained in:
陈金泉
2011-07-29 10:05:55 +08:00
parent 5d0b87e783
commit 08c3b4ccb9
1 changed files with 13 additions and 2 deletions
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15
sound/soc/codecs/wm8900.c
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@@ -252,6 +252,9 @@ EXPORT_SYMBOL_GPL(codec_set_spk);
static void wm8900_powerdown(void)
{
printk("Power down wm8900\n");
#ifndef WM8900_NO_POWEROFF
gpio_set_value(RK29_PIN1_PD6, GPIO_LOW);
#endif
snd_soc_write(wm8900_codec, WM8900_REG_POWER1, 0x210D);
@@ -293,7 +296,8 @@ static void wm8900_set_hw(struct snd_soc_codec *codec)
return;
printk("Power up wm8900\n");
//CLK , PATH, VOL,POW.
snd_soc_write(codec, WM8900_REG_HPCTL1, 0x30);
snd_soc_write(codec, WM8900_REG_POWER1, 0x0100);
snd_soc_write(codec, WM8900_REG_POWER3, 0x60);
@@ -351,7 +355,10 @@ static void wm8900_set_hw(struct snd_soc_codec *codec)
gpio_set_value(SPK_CON, GPIO_HIGH);
}
#endif
#ifndef WM8900_NO_POWEROFF
msleep(350);
gpio_set_value(RK29_PIN1_PD6, GPIO_HIGH);
#endif
wm8900_current_status |= WM8900_IS_STARTUP;
}
@@ -1163,6 +1170,10 @@ static int wm8900_probe(struct platform_device *pdev)
struct snd_soc_codec *codec;
int ret = 0;
#ifndef WM8900_NO_POWEROFF
gpio_set_value(RK29_PIN1_PD6, GPIO_LOW);
#endif
WM8900_DBG("Enter:%s, %d \n", __FUNCTION__, __LINE__);
if (!wm8900_codec) {