ASoC: wm8776: Convert to snd_soc_cache_sync

Convert to snd_soc_cache_sync for sync reg_cache with the hardware.
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/wm8776.c

@@ -308,6 +308,8 @@ static int wm8776_set_bias_level(struct snd_soc_codec *codec,
 		break;
 	case SND_SOC_BIAS_STANDBY:
 		if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
+			snd_soc_cache_sync(codec);
+
 			/* Disable the global powerdown; DAPM does the rest */
 			snd_soc_update_bits(codec, WM8776_PWRDOWN, 1, 0);
 		}
@@ -379,21 +381,7 @@ static int wm8776_suspend(struct snd_soc_codec *codec, pm_message_t state)
 
 static int wm8776_resume(struct snd_soc_codec *codec)
 {
-	int i;
-	u8 data[2];
-	u16 *cache = codec->reg_cache;
-
-	/* Sync reg_cache with the hardware */
-	for (i = 0; i < ARRAY_SIZE(wm8776_reg); i++) {
-		if (cache[i] == wm8776_reg[i])
-			continue;
-		data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
-		data[1] = cache[i] & 0x00ff;
-		codec->hw_write(codec->control_data, data, 2);
-	}
-
 	wm8776_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
-
 	return 0;
 }
 #else