diff options
| author | Lionel Xu <Lionel.Xu@freescale.com> | 2011-09-15 15:44:26 +0800 |
|---|---|---|
| committer | Eric Miao <eric.miao@linaro.org> | 2011-09-17 23:04:23 +0800 |
| commit | 665848212ba8705ef13812922b2fe6a56cf96484 (patch) | |
| tree | ecde6f3414c9d6831985ea92c30dc130c47a46d6 | |
| parent | f83d0461771f606732631d5e200d25e1e30be74c (diff) | |
ENGR00156813 MX53 ALSA: Recording no sound
BugLink: http://bugs.launchpad.net/bugs/837797
There is no sound in the recorded wav, to enable recording, the VAG should be
powered up, and the mic bias resistor should be setup with proper value.
Signed-off-by: Lionel Xu <Lionel.Xu@freescale.com>
Signed-off-by: Eric Miao <eric.miao@linaro.org>
| -rw-r--r-- | sound/soc/codecs/sgtl5000.c | 17 | ||||
| -rw-r--r-- | sound/soc/codecs/sgtl5000.h | 2 |
2 files changed, 14 insertions, 5 deletions
diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c index 20cc36f268ad..be7acc39c963 100644 --- a/sound/soc/codecs/sgtl5000.c +++ b/sound/soc/codecs/sgtl5000.c @@ -103,7 +103,11 @@ static int mic_bias_event(struct snd_soc_dapm_widget *w, case SND_SOC_DAPM_POST_PMU: /* change mic bias resistor to 4Kohm */ snd_soc_update_bits(w->codec, SGTL5000_CHIP_MIC_CTRL, - SGTL5000_BIAS_R_4k, SGTL5000_BIAS_R_4k); + SGTL5000_BIAS_R_MASK, \ + SGTL5000_BIAS_R_4k << SGTL5000_BIAS_R_SHIFT); + + snd_soc_update_bits(w->codec, SGTL5000_CHIP_ANA_POWER, + SGTL5000_VAG_POWERUP, SGTL5000_VAG_POWERUP); break; case SND_SOC_DAPM_PRE_PMD: @@ -112,7 +116,11 @@ static int mic_bias_event(struct snd_soc_dapm_widget *w, * of mic bias and output impedance */ snd_soc_update_bits(w->codec, SGTL5000_CHIP_MIC_CTRL, - SGTL5000_BIAS_R_8k, 0); + SGTL5000_BIAS_R_MASK, \ + SGTL5000_BIAS_R_off << SGTL5000_BIAS_R_SHIFT); + + snd_soc_update_bits(w->codec, SGTL5000_CHIP_ANA_POWER, + SGTL5000_VAG_POWERUP, 0); break; } return 0; @@ -240,7 +248,7 @@ static const struct snd_soc_dapm_widget sgtl5000_dapm_widgets[] = { 0, SGTL5000_CHIP_DIG_POWER, 1, 0), - SND_SOC_DAPM_MICBIAS_E("Mic Bias", SGTL5000_CHIP_MIC_CTRL, 8, 0, + SND_SOC_DAPM_MICBIAS_E("Mic Bias", SND_SOC_NOPM, 0, 0, mic_bias_event, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), @@ -271,7 +279,8 @@ static const struct snd_soc_dapm_widget sgtl5000_dapm_widgets[] = { /* routes for sgtl5000 */ static const struct snd_soc_dapm_route audio_map[] = { {"Capture Mux", "LINE_IN", "LINE_IN"}, /* line_in --> adc_mux */ - {"Capture Mux", "MIC_IN", "MIC_IN"}, /* mic_in --> adc_mux */ + {"Mic Bias", NULL, "MIC_IN"}, /* mic_in --> mic bias */ + {"Capture Mux", "MIC_IN", "Mic Bias"}, /* mic bias --> adc_mux */ {"ADC", NULL, "Capture Mux"}, /* adc_mux --> adc */ diff --git a/sound/soc/codecs/sgtl5000.h b/sound/soc/codecs/sgtl5000.h index eec3ab368f39..8a9f43534b79 100644 --- a/sound/soc/codecs/sgtl5000.h +++ b/sound/soc/codecs/sgtl5000.h @@ -280,7 +280,7 @@ /* * SGTL5000_CHIP_MIC_CTRL */ -#define SGTL5000_BIAS_R_MASK 0x0200 +#define SGTL5000_BIAS_R_MASK 0x0300 #define SGTL5000_BIAS_R_SHIFT 8 #define SGTL5000_BIAS_R_WIDTH 2 #define SGTL5000_BIAS_R_off 0x0 |