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authorMark Brown <broonie@opensource.wolfsonmicro.com>2011-05-10 23:55:21 +0200
committerMark Brown <broonie@opensource.wolfsonmicro.com>2011-05-11 15:55:45 +0200
commit063b7cc43fb2413238095b81f9b4a2ee2c52056b (patch)
treebf5c65f30a4f67f41cc3544e10c57696ea9b3173 /sound/soc/soc-cache.c
parent051e994e9506e64259df34e91b028fe2470fbf2a (diff)
ASoC: Remove byte swap in 4x12 SPI write
snd_soc_4_12_spi_write() contains a byte swap. Since this code was written for an Analog CODEC on a Blackfin reference board it appears that this is done because while Blackfin is little endian the CODEC is big endian (as are most CODECs). Push this up into the generic 4x12 write function and use cpu_to_be16() to do the byte swap so things are more regular and things work on both CPU endiannesses. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@ti.com>
Diffstat (limited to 'sound/soc/soc-cache.c')
-rw-r--r--sound/soc/soc-cache.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/sound/soc/soc-cache.c b/sound/soc/soc-cache.c
index 6e5e30a17f8..73907e5f078 100644
--- a/sound/soc/soc-cache.c
+++ b/sound/soc/soc-cache.c
@@ -101,12 +101,11 @@ static unsigned int snd_soc_4_12_read(struct snd_soc_codec *codec,
static int snd_soc_4_12_write(struct snd_soc_codec *codec, unsigned int reg,
unsigned int value)
{
- u8 data[2];
+ u16 data;
- data[0] = (reg << 4) | ((value >> 8) & 0x000f);
- data[1] = value & 0x00ff;
+ data = cpu_to_be16((reg << 12) | (value & 0xffffff));
- return do_hw_write(codec, reg, value, data, 2);
+ return do_hw_write(codec, reg, value, &data, 2);
}
#if defined(CONFIG_SPI_MASTER)
@@ -115,8 +114,8 @@ static int snd_soc_4_12_spi_write(void *control_data, const char *data,
{
u8 msg[2];
- msg[0] = data[1];
- msg[1] = data[0];
+ msg[0] = data[0];
+ msg[1] = data[1];
return do_spi_write(control_data, msg, len);
}