Messages in this thread Patch in this message | | | From | Ben Hutchings <> | Date | Sun, 08 Dec 2019 13:52:46 +0000 | Subject | [PATCH 3.16 02/72] ASoC: sgtl5000: fix VAG power up timing |
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3.16.79-rc1 review patch. If anyone has any objections, please let me know.
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From: Jean-Michel Hautbois <jhautbois@gmail.com>
commit c803cc2dcd722e08020c1ba63bb5ceece4a19fdb upstream.
When power up, a "pop" is heard on line-in and mic-in. An analysis of the PCM shows it lasts ~400ms and looks like a filter response. VAG power up should be delayed by 400ms as VAG power down is.
Signed-off-by: Jean-Michel Hautbois <jean-michel.hautbois@veo-labs.com> Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> --- sound/soc/codecs/sgtl5000.c | 1 + 1 file changed, 1 insertion(+)
--- a/sound/soc/codecs/sgtl5000.c +++ b/sound/soc/codecs/sgtl5000.c @@ -175,6 +175,7 @@ static int power_vag_event(struct snd_so case SND_SOC_DAPM_POST_PMU: snd_soc_update_bits(w->codec, SGTL5000_CHIP_ANA_POWER, SGTL5000_VAG_POWERUP, SGTL5000_VAG_POWERUP); + msleep(400); break; case SND_SOC_DAPM_PRE_PMD:
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