diff options
| author | Max Krummenacher <max.krummenacher@toradex.com> | 2017-03-13 12:52:16 +0100 |
|---|---|---|
| committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2020-02-09 22:45:33 +0100 |
| commit | cfd5b2ed6547bdc3ee55ac9a22a1de5584b5012a (patch) | |
| tree | c16b791fe46d577a277d8022eb0ebdfb4a5b8e0b /sound | |
| parent | 04e08994cf873f145c1c12bd7a16b7d9bd5a0e12 (diff) | |
sgtl5000: switch on vag power for line_in -> output
The VAG power is switched off whenever there is no ADC or DAC activity
resulting in a non functional local loop from line in to headphone out.
Switch on VAG power or keep it on when line in gets directly connected
to the output.
TODO: when switching the muxer back to DAC switch the VAG power off
if no recording or playing is happening.
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
(cherry picked from commit 3e3ea9ba80e8bc9fe6896d6afe664ba3be904cd2)
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/codecs/sgtl5000.c | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c index ca8a70ab22a8..a8952ed4185f 100644 --- a/sound/soc/codecs/sgtl5000.c +++ b/sound/soc/codecs/sgtl5000.c @@ -322,13 +322,17 @@ static int vag_and_mute_control(struct snd_soc_component *component, sgtl5000->mute_state[event_source]); break; case SND_SOC_DAPM_PRE_PMD: - sgtl5000->mute_state[event_source] = - mute_output(component, mute_mask[event_source]); - vag_power_off(component, event_source); - break; - case SND_SOC_DAPM_POST_PMD: - restore_output(component, mute_mask[event_source], - sgtl5000->mute_state[event_source]); + /* + * Don't clear VAG_POWERUP, when both DAC and ADC are + * operational to prevent inadvertently starving the + * other one of them. + */ + if ((snd_soc_read(codec, SGTL5000_CHIP_ANA_POWER) & + mask) != mask) { + snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER, + SGTL5000_VAG_POWERUP, 0); + msleep(400); + } break; default: break; @@ -414,7 +418,9 @@ static const struct snd_soc_dapm_widget sgtl5000_dapm_widgets[] = { SND_SOC_DAPM_PGA("LO", SGTL5000_CHIP_ANA_POWER, 0, 0, NULL, 0), SND_SOC_DAPM_MUX("Capture Mux", SND_SOC_NOPM, 0, 0, &adc_mux), - SND_SOC_DAPM_MUX("Headphone Mux", SND_SOC_NOPM, 0, 0, &dac_mux), + SND_SOC_DAPM_MUX_E("Headphone Mux", SND_SOC_NOPM, 0, 0, &dac_mux, + power_vag_event, + SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_POST_PMD), /* aif for i2s input */ SND_SOC_DAPM_AIF_IN("AIFIN", "Playback", |