ASoC: TWL4030: Add shadow register
Shadow, non HW register for dealing with the HandsfreeL/R
muting.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/twl4030.c b/sound/soc/codecs/twl4030.c
index 17ddcb2..989446d 100644
--- a/sound/soc/codecs/twl4030.c
+++ b/sound/soc/codecs/twl4030.c
@@ -115,6 +115,7 @@
0x00, /* REG_VIBRA_PWM_SET (0x47) */
0x00, /* REG_ANAMIC_GAIN (0x48) */
0x00, /* REG_MISC_SET_2 (0x49) */
+ 0x00, /* REG_SW_SHADOW (0x4A) - Shadow, non HW register */
};
/* codec private data */
@@ -172,7 +173,11 @@
unsigned int reg, unsigned int value)
{
twl4030_write_reg_cache(codec, reg, value);
- return twl4030_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE, value, reg);
+ if (likely(reg < TWL4030_REG_SW_SHADOW))
+ return twl4030_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE, value,
+ reg);
+ else
+ return 0;
}
static void twl4030_codec_enable(struct snd_soc_codec *codec, int enable)