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author | Dimitris Papastamos <dp@opensource.wolfsonmicro.com> | 2010-09-22 12:25:47 (GMT) |
---|---|---|
committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2010-09-23 18:48:11 (GMT) |
commit | db49c146a8c0e8d49c0ff029c2496d47660dfb28 (patch) | |
tree | c4012f9a10941e2beaadb8e04ca33e6a61a42c3a | |
parent | 3e13f65e3aa51fc7009afc554683a0b182c057f5 (diff) | |
download | linux-fsl-qoriq-db49c146a8c0e8d49c0ff029c2496d47660dfb28.tar.xz |
ASoC: Delegate to hw specific read for volatile registers
Ensure that reads on volatile registers will correctly delegate
to the bus specific read function.
Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
-rw-r--r-- | sound/soc/soc-cache.c | 76 |
1 files changed, 50 insertions, 26 deletions
diff --git a/sound/soc/soc-cache.c b/sound/soc/soc-cache.c index 8a3f11c..143d2be 100644 --- a/sound/soc/soc-cache.c +++ b/sound/soc/soc-cache.c @@ -19,8 +19,15 @@ static unsigned int snd_soc_4_12_read(struct snd_soc_codec *codec, unsigned int reg) { u16 *cache = codec->reg_cache; - if (reg >= codec->driver->reg_cache_size) - return -1; + + if (reg >= codec->driver->reg_cache_size || + snd_soc_codec_volatile_register(codec, reg)) { + if (codec->cache_only) + return -1; + + return codec->hw_read(codec, reg); + } + return cache[reg]; } @@ -31,13 +38,12 @@ static int snd_soc_4_12_write(struct snd_soc_codec *codec, unsigned int reg, u8 data[2]; int ret; - BUG_ON(codec->driver->volatile_register); - data[0] = (reg << 4) | ((value >> 8) & 0x000f); data[1] = value & 0x00ff; - if (reg < codec->driver->reg_cache_size) - cache[reg] = value; + if (!snd_soc_codec_volatile_register(codec, reg) && + reg < codec->driver->reg_cache_size) + cache[reg] = value; if (codec->cache_only) { codec->cache_sync = 1; @@ -89,8 +95,15 @@ static unsigned int snd_soc_7_9_read(struct snd_soc_codec *codec, unsigned int reg) { u16 *cache = codec->reg_cache; - if (reg >= codec->driver->reg_cache_size) - return -1; + + if (reg >= codec->driver->reg_cache_size || + snd_soc_codec_volatile_register(codec, reg)) { + if (codec->cache_only) + return -1; + + return codec->hw_read(codec, reg); + } + return cache[reg]; } @@ -101,13 +114,12 @@ static int snd_soc_7_9_write(struct snd_soc_codec *codec, unsigned int reg, u8 data[2]; int ret; - BUG_ON(codec->driver->volatile_register); - data[0] = (reg << 1) | ((value >> 8) & 0x0001); data[1] = value & 0x00ff; - if (reg < codec->driver->reg_cache_size) - cache[reg] = value; + if (!snd_soc_codec_volatile_register(codec, reg) && + reg < codec->driver->reg_cache_size) + cache[reg] = value; if (codec->cache_only) { codec->cache_sync = 1; @@ -161,14 +173,13 @@ static int snd_soc_8_8_write(struct snd_soc_codec *codec, unsigned int reg, u8 *cache = codec->reg_cache; u8 data[2]; - BUG_ON(codec->driver->volatile_register); - reg &= 0xff; data[0] = reg; data[1] = value & 0xff; - if (reg < codec->driver->reg_cache_size) - cache[reg] = value; + if (!snd_soc_codec_volatile_register(codec, value) && + reg < codec->driver->reg_cache_size) + cache[reg] = value; if (codec->cache_only) { codec->cache_sync = 1; @@ -187,9 +198,16 @@ static unsigned int snd_soc_8_8_read(struct snd_soc_codec *codec, unsigned int reg) { u8 *cache = codec->reg_cache; + reg &= 0xff; - if (reg >= codec->driver->reg_cache_size) - return -1; + if (reg >= codec->driver->reg_cache_size || + snd_soc_codec_volatile_register(codec, reg)) { + if (codec->cache_only) + return -1; + + return codec->hw_read(codec, reg); + } + return cache[reg]; } @@ -344,8 +362,14 @@ static unsigned int snd_soc_16_8_read(struct snd_soc_codec *codec, u8 *cache = codec->reg_cache; reg &= 0xff; - if (reg >= codec->driver->reg_cache_size) - return -1; + if (reg >= codec->driver->reg_cache_size || + snd_soc_codec_volatile_register(codec, reg)) { + if (codec->cache_only) + return -1; + + return codec->hw_read(codec, reg); + } + return cache[reg]; } @@ -356,15 +380,14 @@ static int snd_soc_16_8_write(struct snd_soc_codec *codec, unsigned int reg, u8 data[3]; int ret; - BUG_ON(codec->driver->volatile_register); - data[0] = (reg >> 8) & 0xff; data[1] = reg & 0xff; data[2] = value; reg &= 0xff; - if (reg < codec->driver->reg_cache_size) - cache[reg] = value; + if (!snd_soc_codec_volatile_register(codec, reg) && + reg < codec->driver->reg_cache_size) + cache[reg] = value; if (codec->cache_only) { codec->cache_sync = 1; @@ -475,8 +498,9 @@ static int snd_soc_16_16_write(struct snd_soc_codec *codec, unsigned int reg, data[2] = (value >> 8) & 0xff; data[3] = value & 0xff; - if (reg < codec->driver->reg_cache_size) - cache[reg] = value; + if (!snd_soc_codec_volatile_register(codec, reg) && + reg < codec->driver->reg_cache_size) + cache[reg] = value; if (codec->cache_only) { codec->cache_sync = 1; |