The registers for AD193X are defined as 0x800-0x810 for spi which uses 16_8 mode,
for i2c to support AD1937, we will use 8_8 mode, only the low byte of 0x800-0x810
is valid.
The patch will not destory other codecs, but make soc cache interface more useful.
Signed-off-by: Barry Song <barry.song@xxxxxxxxxx>
---
sound/soc/soc-cache.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/sound/soc/soc-cache.c b/sound/soc/soc-cache.c
index 91db7af..9dfe9a5 100644
--- a/sound/soc/soc-cache.c
+++ b/sound/soc/soc-cache.c
@@ -159,7 +159,8 @@ static int snd_soc_8_8_write(struct snd_soc_codec *codec, unsigned int reg,
BUG_ON(codec->volatile_register);
- data[0] = reg & 0xff;
+ reg &= 0xff;
+ data[0] = reg;
data[1] = value & 0xff;
if (reg < codec->reg_cache_size)
@@ -180,6 +181,7 @@ 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->reg_cache_size)
return -1;
return cache[reg];
--
1.5.6.3
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