From: Peter Ujfalusi peter.ujfalusi@nokia.com
DAPM event handler is set to filter out invalid MUX settings for certain outputs. Earpiece: - 0 = Off - 1 = DACL1 - 2 = DACL2 - 3 = *** Invalid *** - 4 = DACR1
PreDriveL/R: - 0 = Off/Off - 1 = DACL1/DACR1 - 2 = DACL2/DACR2 - 3 = *** Invalid/Invalid *** - 4 = DACR2/DACL2
Signed-off-by: Peter Ujfalusi peter.ujfalusi@nokia.com Signed-off-by: Mark Brown broonie@opensource.wolfsonmicro.com --- sound/soc/codecs/twl4030.c | 24 ++++++++++++++++++++++++ 1 files changed, 24 insertions(+), 0 deletions(-)
diff --git a/sound/soc/codecs/twl4030.c b/sound/soc/codecs/twl4030.c index 4293ec7..9d10783 100644 --- a/sound/soc/codecs/twl4030.c +++ b/sound/soc/codecs/twl4030.c @@ -190,6 +190,30 @@ static void twl4030_init_chip(struct snd_soc_codec *codec)
}
+static int outmixer_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; + int ret = 0; + int val; + + switch (e->reg) { + case TWL4030_REG_PREDL_CTL: + case TWL4030_REG_PREDR_CTL: + case TWL4030_REG_EAR_CTL: + val = w->value >> e->shift_l; + if (val == 3) { + printk(KERN_WARNING + "Invalid MUX setting for register 0x%02x (%d)\n", + e->reg, val); + ret = -1; + } + break; + } + + return ret; +} + /* * Some of the gain controls in TWL (mostly those which are associated with * the outputs) are implemented in an interesting way: