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authorMark Brown <broonie@linaro.org>2013-09-23 19:14:32 +0100
committerLee Jones <lee.jones@linaro.org>2013-10-23 16:21:24 +0100
commit0248b4bfe56f0545c051e6230939ca8b95f1b037 (patch)
tree7ffc3f6930b8ccf21a61b27bed03d48134bb88b9 /drivers/mfd
parentb264a70eef880aff31652a10ffee9c03e949b69b (diff)
downloadop-kernel-dev-0248b4bfe56f0545c051e6230939ca8b95f1b037.zip
op-kernel-dev-0248b4bfe56f0545c051e6230939ca8b95f1b037.tar.gz
mfd: mc13xxx: Move SPI erratum workaround into SPI I/O function
Move the workaround for double sending AUDIO_CODEC and AUDIO_DAC writes into the SPI core, aiding refactoring to eliminate the ASoC custom I/O functions and avoiding the extra writes for I2C. Signed-off-by: Mark Brown <broonie@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/mfd')
-rw-r--r--drivers/mfd/mc13xxx-spi.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/mfd/mc13xxx-spi.c b/drivers/mfd/mc13xxx-spi.c
index 77189da..5f14ef6 100644
--- a/drivers/mfd/mc13xxx-spi.c
+++ b/drivers/mfd/mc13xxx-spi.c
@@ -94,10 +94,15 @@ static int mc13xxx_spi_write(void *context, const void *data, size_t count)
{
struct device *dev = context;
struct spi_device *spi = to_spi_device(dev);
+ const char *reg = data;
if (count != 4)
return -ENOTSUPP;
+ /* include errata fix for spi audio problems */
+ if (*reg == MC13783_AUDIO_CODEC || *reg == MC13783_AUDIO_DAC)
+ spi_write(spi, data, count);
+
return spi_write(spi, data, count);
}
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