diff options
| author | Joonyoung Shim <jy0922.shim@samsung.com> | 2009-07-23 17:33:17 +0900 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2009-07-23 11:08:30 +0100 |
| commit | a7569afa8b79ca9272b0d7544335bc05b5b721d6 (patch) | |
| tree | fdc41caf35e146da60c65714826932737d9db5e6 /sound | |
| parent | 459dc35233c88d9eb7c5d0e6c086122751e64750 (diff) | |
| download | blackbird-op-linux-a7569afa8b79ca9272b0d7544335bc05b5b721d6.tar.gz blackbird-op-linux-a7569afa8b79ca9272b0d7544335bc05b5b721d6.zip | |
ASoC: MAX9877: fix write operation for register
The MAX9877 needs an address of start register when we write values to
registers through i2c_master_send(), but the code for this was missed in
max9877_write_regs().
If the value of control is 0 in the max9877_set_out_mode(), the value is
not increased to 1, but actually the value to write to the register
should be 1.
And the register bits for out_mode and osc_mode should be cleared before
writing.
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/codecs/max9877.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/sound/soc/codecs/max9877.c b/sound/soc/codecs/max9877.c index a1f1119e1b7a..9e7e964a5fa3 100644 --- a/sound/soc/codecs/max9877.c +++ b/sound/soc/codecs/max9877.c @@ -25,7 +25,14 @@ static u8 max9877_regs[5] = { 0x40, 0x00, 0x00, 0x00, 0x49 }; static void max9877_write_regs(void) { - if (i2c_master_send(i2c, max9877_regs, 5) != 5) + unsigned int i; + u8 data[6]; + + data[0] = MAX9877_INPUT_MODE; + for (i = 0; i < ARRAY_SIZE(max9877_regs); i++) + data[i + 1] = max9877_regs[i]; + + if (i2c_master_send(i2c, data, 6) != 6) dev_err(&i2c->dev, "i2c write failed\n"); } @@ -135,12 +142,12 @@ static int max9877_set_out_mode(struct snd_kcontrol *kcontrol, { u8 value = ucontrol->value.integer.value[0]; - if (value) - value += 1; + value += 1; if ((max9877_regs[MAX9877_OUTPUT_MODE] & MAX9877_OUTMODE_MASK) == value) return 0; + max9877_regs[MAX9877_OUTPUT_MODE] &= ~MAX9877_OUTMODE_MASK; max9877_regs[MAX9877_OUTPUT_MODE] |= value; max9877_write_regs(); return 1; @@ -166,6 +173,7 @@ static int max9877_set_osc_mode(struct snd_kcontrol *kcontrol, if ((max9877_regs[MAX9877_OUTPUT_MODE] & MAX9877_OSC_MASK) == value) return 0; + max9877_regs[MAX9877_OUTPUT_MODE] &= ~MAX9877_OSC_MASK; max9877_regs[MAX9877_OUTPUT_MODE] |= value; max9877_write_regs(); return 1; |
