From: John Lin <john.lin@realtek.com>
Date: Mon, 16 Nov 2015 05:55:35 +0000 (+0800)
Subject: ASoC: rt5645: Increase the delay time to imporve the HP pop noise
X-Git-Tag: firefly_0821_release~176^2~581^2~9^2~3^2~3
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=91ed37e45c485533997e8a7c1efd2ca39b441b60;p=firefly-linux-kernel-4.4.55.git

ASoC: rt5645: Increase the delay time to imporve the HP pop noise

Unmuting headphone has pop noise in particular hardware design. So we extend
the delay time in headphone unmuting sequence to avoid pop.

Signed-off-by: John Lin <john.lin@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---

diff --git a/sound/soc/codecs/rt5645.c b/sound/soc/codecs/rt5645.c
index 672fafd8314a..fa8b5dfa673e 100644
--- a/sound/soc/codecs/rt5645.c
+++ b/sound/soc/codecs/rt5645.c
@@ -1519,7 +1519,7 @@ static void hp_amp_power(struct snd_soc_codec *codec, int on)
 				regmap_write(rt5645->regmap, RT5645_PR_BASE +
 					RT5645_MAMP_INT_REG2, 0xfc00);
 				snd_soc_write(codec, RT5645_DEPOP_M2, 0x1140);
-				msleep(40);
+				msleep(70);
 				rt5645->hp_on = true;
 			} else {
 				/* depop parameters */