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Date: Thu, 17 Dec 2015 11:07:23 +0100 From: Jean-Michel Hautbois <jhautbois@...il.com> To: alsa-devel@...a-project.org, linux-kernel@...r.kernel.org Cc: fbrozovic@...il.com, alexander.stein@...tec-electronic.com, eric.nelson@...ndarydevices.com, gianlucarenzi@...ekelettronica.it, lars@...afoo.de, tiwai@...e.com, perex@...ex.cz, broonie@...nel.org, lgirdwood@...il.com, Jean-Michel Hautbois <jean-michel.hautbois@...-labs.com> Subject: [PATCH] ASoC: sgtl5000: fix VAG power up timing 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@...-labs.com> --- sound/soc/codecs/sgtl5000.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c index f540f82..08b4046 100644 --- a/sound/soc/codecs/sgtl5000.c +++ b/sound/soc/codecs/sgtl5000.c @@ -189,6 +189,7 @@ static int power_vag_event(struct snd_soc_dapm_widget *w, case SND_SOC_DAPM_POST_PMU: snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER, SGTL5000_VAG_POWERUP, SGTL5000_VAG_POWERUP); + msleep(400); break; case SND_SOC_DAPM_PRE_PMD: -- 2.6.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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