diff options
| author | Mark Brown <broonie@linaro.org> | 2013-09-23 20:14:32 +0200 |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2013-09-25 14:47:30 +0200 |
| commit | fd792f8fbcfa95674b6c417429f576ad1d808086 (patch) | |
| tree | dd092c79d308f1b2194f1091cab23f2dfb046b2e /drivers/mfd/mc13xxx-spi.c | |
| parent | mfd: mc13xxx: Don't require lock for simple register I/O (diff) | |
| download | linux-fd792f8fbcfa95674b6c417429f576ad1d808086.tar.xz linux-fd792f8fbcfa95674b6c417429f576ad1d808086.zip | |
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/mc13xxx-spi.c')
| -rw-r--r-- | drivers/mfd/mc13xxx-spi.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/mfd/mc13xxx-spi.c b/drivers/mfd/mc13xxx-spi.c index 77189daadf1e..5f14ef6693c2 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); } |