Title: [8478] trunk/sound/soc/soc-cache.c: soc-cache: let reg be AND'ed by 0xff instead of data buffer for 8_8 mode
- Revision
- 8478
- Author
- bhsong
- Date
- 2010-03-17 05:34:03 -0400 (Wed, 17 Mar 2010)
Log Message
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.
Modified Paths
Diff
Modified: trunk/sound/soc/soc-cache.c (8477 => 8478)
--- trunk/sound/soc/soc-cache.c 2010-03-17 09:00:36 UTC (rev 8477)
+++ trunk/sound/soc/soc-cache.c 2010-03-17 09:34:03 UTC (rev 8478)
@@ -147,7 +147,8 @@
BUG_ON(codec->volatile_register);
- data[0] = reg & 0xff;
+ reg &= 0xff;
+ data[0] = reg;
data[1] = value & 0xff;
if (reg < codec->reg_cache_size)
@@ -163,8 +164,11 @@
unsigned int reg)
{
u8 *cache = codec->reg_cache;
+
+ reg &= 0xff;
if (reg >= codec->reg_cache_size)
return -1;
+
return cache[reg];
}
@@ -174,6 +178,7 @@
u16 *reg_cache = codec->reg_cache;
u8 data[3];
+ reg &= 0xff;
data[0] = reg;
data[1] = (value >> 8) & 0xff;
data[2] = value & 0xff;
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