Use gpio for codec pop noise

diff --git a/sound/soc/codecs/wm8900.c b/sound/soc/codecs/wm8900.c
index c189b846b04b2250381a5cd6fbba8d9e9238c5b8..dc51742593f0c91bcf5828c1b5a6b354d9340dec 100755 (executable)
--- a/sound/soc/codecs/wm8900.c
+++ b/sound/soc/codecs/wm8900.c
@@ -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) {