ASoC: soc-cache: let reg be AND'ed by 0xff instead of data buffer for 8_8 mode
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@analog.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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 @@
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 @@
unsigned int reg)
{
u8 *cache = codec->reg_cache;
+ reg &= 0xff;
if (reg >= codec->reg_cache_size)
return -1;
return cache[reg];