Title: [7706] branches/2009R1/sound/soc/codecs/ssm2602.c: add workaround for I2C spec mis-match problem
- Revision
- 7706
- Author
- cliff
- Date
- 2009-10-26 03:20:22 -0400 (Mon, 26 Oct 2009)
Log Message
add workaround for I2C spec mis-match problem
Modified Paths
Diff
Modified: branches/2009R1/sound/soc/codecs/ssm2602.c (7705 => 7706)
--- branches/2009R1/sound/soc/codecs/ssm2602.c 2009-10-26 07:18:10 UTC (rev 7705)
+++ branches/2009R1/sound/soc/codecs/ssm2602.c 2009-10-26 07:20:22 UTC (rev 7706)
@@ -98,6 +98,7 @@
unsigned int value)
{
u8 data[2];
+ u8 count = 0;
/* data is
* D15..D9 ssm2602 register offset
@@ -107,10 +108,15 @@
data[1] = value & 0x00ff;
ssm2602_write_reg_cache(codec, reg, value);
- if (codec->hw_write(codec->control_data, data, 2) == 2)
+ /* If failed, retry it up to 100 times */
+ for (count = 0; count < 100; count++)
+ if (codec->hw_write(codec->control_data, data, 2) == 2)
+ break;
+
+ if (count == 100)
+ return -EIO;
+ else
return 0;
- else
- return -EIO;
}
#define ssm2602_reset(c) ssm2602_write(c, SSM2602_RESET, 0)
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