From a3032b47c46920ed3f2fd58e64f484e3dab49f23 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 1 Feb 2010 18:48:03 +0000 Subject: ASoC: Add a cache_sync bit to the CODEC structure Add a bit to the CODEC structure indicating if a cache sync is required. By default this will be set if a cache only write is done to a soc-cache register cache. This allows us to avoid syncing the cache back after using cache only writes if there were no changes. Signed-off-by: Mark Brown Acked-by: Liam Girdwood --- sound/soc/soc-cache.c | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) (limited to 'sound') diff --git a/sound/soc/soc-cache.c b/sound/soc/soc-cache.c index 84b6916db87..5869dc3be78 100644 --- a/sound/soc/soc-cache.c +++ b/sound/soc/soc-cache.c @@ -39,8 +39,10 @@ static int snd_soc_4_12_write(struct snd_soc_codec *codec, unsigned int reg, if (reg < codec->reg_cache_size) cache[reg] = value; - if (codec->cache_only) + if (codec->cache_only) { + codec->cache_sync = 1; return 0; + } ret = codec->hw_write(codec->control_data, data, 2); if (ret == 2) @@ -105,8 +107,10 @@ static int snd_soc_7_9_write(struct snd_soc_codec *codec, unsigned int reg, if (reg < codec->reg_cache_size) cache[reg] = value; - if (codec->cache_only) + if (codec->cache_only) { + codec->cache_sync = 1; return 0; + } ret = codec->hw_write(codec->control_data, data, 2); if (ret == 2) @@ -161,8 +165,10 @@ static int snd_soc_8_8_write(struct snd_soc_codec *codec, unsigned int reg, if (reg < codec->reg_cache_size) cache[reg] = value; - if (codec->cache_only) + if (codec->cache_only) { + codec->cache_sync = 1; return 0; + } if (codec->hw_write(codec->control_data, data, 2) == 2) return 0; @@ -192,8 +198,10 @@ static int snd_soc_8_16_write(struct snd_soc_codec *codec, unsigned int reg, if (!snd_soc_codec_volatile_register(codec, reg)) reg_cache[reg] = value; - if (codec->cache_only) + if (codec->cache_only) { + codec->cache_sync = 1; return 0; + } if (codec->hw_write(codec->control_data, data, 3) == 3) return 0; @@ -313,8 +321,10 @@ static int snd_soc_16_8_write(struct snd_soc_codec *codec, unsigned int reg, if (reg < codec->reg_cache_size) cache[reg] = value; - if (codec->cache_only) + if (codec->cache_only) { + codec->cache_sync = 1; return 0; + } ret = codec->hw_write(codec->control_data, data, 3); if (ret == 3) -- cgit v1.2.3