[alsa-devel] [PATCH 09/11] ASoC: wm8974: Convert to snd_soc_write

[Axel Lin]

Convert codec->hw_write to snd_soc_write

Signed-off-by: Axel Lin <axel.lin at gmail.com>
---
 sound/soc/codecs/wm8974.c |   33 ++++++++++++++++++++++-----------
 1 files changed, 22 insertions(+), 11 deletions(-)

diff --git a/sound/soc/codecs/wm8974.c b/sound/soc/codecs/wm8974.c
index ca646a8..7db3808 100644
--- a/sound/soc/codecs/wm8974.c
+++ b/sound/soc/codecs/wm8974.c
@@ -513,6 +513,26 @@ static int wm8974_mute(struct snd_soc_dai *dai, int mute)
 	return 0;
 }
 
+static void wm8974_sync_cache(struct snd_soc_codec *codec)
+{
+	short i;
+	u16 *cache;
+
+	if (!codec->cache_sync)
+		return;
+	codec->cache_only = 0;
+	codec->cache_bypass = 1;
+	/* restore cache */
+	cache = codec->reg_cache;
+	for (i = 0; i < codec->driver->reg_cache_size; i++) {
+		if (i == WM8974_RESET || cache[i] == wm8974_reg[i])
+			continue;
+		snd_soc_write(codec, i, cache[i]);
+	}
+	codec->cache_bypass = 0;
+	codec->cache_sync = 0;
+}
+
 /* liam need to make this lower power with dapm */
 static int wm8974_set_bias_level(struct snd_soc_codec *codec,
 	enum snd_soc_bias_level level)
@@ -530,6 +550,8 @@ static int wm8974_set_bias_level(struct snd_soc_codec *codec,
 		power1 |= WM8974_POWER1_BIASEN | WM8974_POWER1_BUFIOEN;
 
 		if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
+			wm8974_sync_cache(codec);
+
 			/* Initial cap charge at VMID 5k */
 			snd_soc_write(codec, WM8974_POWER1, power1 | 0x3);
 			mdelay(100);
@@ -589,18 +611,7 @@ static int wm8974_suspend(struct snd_soc_codec *codec, pm_message_t state)
 
 static int wm8974_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(wm8974_reg); i++) {
-		data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
-		data[1] = cache[i] & 0x00ff;
-		codec->hw_write(codec->control_data, data, 2);
-	}
 	wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
-
 	return 0;
 }
 
-- 
1.7.4.1