linux-kernel - [PATCH 04/11] ASoC: wm8750: Convert to snd_soc

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Message-ID: <1317944985.5579.9.camel@phoenix>
Date:	Fri, 07 Oct 2011 07:49:45 +0800
From:	Axel Lin <axel.lin@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Liam Girdwood <lrg@...com>, alsa-devel@...a-project.org,
	Richard Purdie <rpurdie@...ys.net>
Subject: [PATCH 04/11] ASoC: wm8750: Convert to snd_soc_write

Convert codec->hw_write to snd_soc_write

Signed-off-by: Axel Lin <axel.lin@...il.com>
---
 sound/soc/codecs/wm8750.c |   36 ++++++++++++++++++++++--------------
 1 files changed, 22 insertions(+), 14 deletions(-)

diff --git a/sound/soc/codecs/wm8750.c b/sound/soc/codecs/wm8750.c
index 862c520..8b5a41b 100644
--- a/sound/soc/codecs/wm8750.c
+++ b/sound/soc/codecs/wm8750.c
@@ -602,6 +602,26 @@ static int wm8750_mute(struct snd_soc_dai *dai, int mute)
 	return 0;
 }
 
+static void wm8750_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 == WM8750_RESET || cache[i] == wm8750_reg[i])
+			continue;
+		snd_soc_write(codec, i, cache[i]);
+	}
+	codec->cache_bypass = 0;
+	codec->cache_sync = 0;
+}
+
 static int wm8750_set_bias_level(struct snd_soc_codec *codec,
 				 enum snd_soc_bias_level level)
 {
@@ -616,6 +636,8 @@ static int wm8750_set_bias_level(struct snd_soc_codec *codec,
 		break;
 	case SND_SOC_BIAS_STANDBY:
 		if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
+			wm8750_sync_cache(codec);
+
 			/* Set VMID to 5k */
 			snd_soc_write(codec, WM8750_PWR1, pwr_reg | 0x01c1);
 
@@ -673,21 +695,7 @@ static int wm8750_suspend(struct snd_soc_codec *codec, pm_message_t state)
 
 static int wm8750_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(wm8750_reg); i++) {
-		if (i == WM8750_RESET)
-			continue;
-		data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
-		data[1] = cache[i] & 0x00ff;
-		codec->hw_write(codec->control_data, data, 2);
-	}
-
 	wm8750_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
-
 	return 0;
 }
 
-- 
1.7.4.1



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