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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>
This commit is contained in:
Peter Ujfalusi 2009-05-25 11:12:12 +03:00 committed by Mark Brown
parent 5a2e9a48b1
commit f3b5d3002d
2 changed files with 12 additions and 2 deletions
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7
sound/soc/codecs/twl4030.c
View File

@ -115,6 +115,7 @@ static const u8 twl4030_reg[TWL4030_CACHEREGNUM] = {
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 @@ static int twl4030_write(struct snd_soc_codec *codec,
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)

7
sound/soc/codecs/twl4030.h
View File

@ -92,8 +92,9 @@
#define TWL4030_REG_VIBRA_PWM_SET 0x47
#define TWL4030_REG_ANAMIC_GAIN 0x48
#define TWL4030_REG_MISC_SET_2 0x49
#define TWL4030_REG_SW_SHADOW 0x4A
#define TWL4030_CACHEREGNUM (TWL4030_REG_MISC_SET_2 + 1)
#define TWL4030_CACHEREGNUM (TWL4030_REG_SW_SHADOW + 1)
/* Bitfield Definitions */
@ -260,6 +261,10 @@
#define TWL4030_SMOOTH_ANAVOL_EN 0x02
#define TWL4030_DIGMIC_LR_SWAP_EN 0x01
/* TWL4030_REG_SW_SHADOW (0x4A) Fields */
#define TWL4030_HFL_EN 0x01
#define TWL4030_HFR_EN 0x02
#define TWL4030_DAI_HIFI 0
#define TWL4030_DAI_VOICE 1