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ASoC: Fix lm4857 control

Browse source 
Commit 4eaa9819dc changed semantics of
private_value member of kcontrol. This resulted in inability to control
amplifier and subsequently in very low output volume.

Tested-by: Johannes Schauer <josch@pyneo.org>
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2009-06-10 13:55:34 +01:00
parent 74b8f955a7
commit 236e6723be
1 changed files with 10 additions and 6 deletions
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16
sound/soc/s3c24xx/neo1973_wm8753.c
View file

@ -345,9 +345,11 @@ static void lm4857_write_regs(void)
static int lm4857_get_reg(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
int reg = kcontrol->private_value & 0xFF;
int shift = (kcontrol->private_value >> 8) & 0x0F;
int mask = (kcontrol->private_value >> 16) & 0xFF;
struct soc_mixer_control *mc =
(struct soc_mixer_control *)kcontrol->private_value;
int reg = mc->reg;
int shift = mc->shift;
int mask = mc->max;
pr_debug("Entered %s\n", __func__);
@ -358,9 +360,11 @@ static int lm4857_get_reg(struct snd_kcontrol *kcontrol,
static int lm4857_set_reg(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
int reg = kcontrol->private_value & 0xFF;
int shift = (kcontrol->private_value >> 8) & 0x0F;
int mask = (kcontrol->private_value >> 16) & 0xFF;
struct soc_mixer_control *mc =
(struct soc_mixer_control *)kcontrol->private_value;
int reg = mc->reg;
int shift = mc->shift;
int mask = mc->max;
if (((lm4857_regs[reg] >> shift) & mask) ==
ucontrol->value.integer.value[0])