AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

ASoC: cs35l35: Improve power down time

Browse Source 
Shorten the time it takes to power down the amp by disabling the volume
ramp whilst doing the final shutdown. The driver has already muted the
amplifier at this stage so doing the volume ramp serves no purpose.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Acked-by: Brian Austin <brian.austin@cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Charles Keepax 2017-04-06 13:52:12 +01:00 committed by Mark Brown
parent 8e71321d19
commit 2c84afb52e
2 changed files with 11 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
sound/soc/codecs/cs35l35.c
View File

@ -187,6 +187,10 @@ static int cs35l35_sdin_event(struct snd_soc_dapm_widget *w,
regmap_update_bits(cs35l35->regmap, CS35L35_PWRCTL1,
CS35L35_PDN_ALL_MASK, 1);
/* Already muted, so disable volume ramp for faster shutdown */
regmap_update_bits(cs35l35->regmap, CS35L35_AMP_DIG_VOL_CTL,
CS35L35_AMP_DIGSFT_MASK, 0);
reinit_completion(&cs35l35->pdn_done);
ret = wait_for_completion_timeout(&cs35l35->pdn_done,
@ -199,6 +203,10 @@ static int cs35l35_sdin_event(struct snd_soc_dapm_widget *w,
regmap_update_bits(cs35l35->regmap, CS35L35_CLK_CTL1,
CS35L35_MCLK_DIS_MASK,
1 << CS35L35_MCLK_DIS_SHIFT);
regmap_update_bits(cs35l35->regmap, CS35L35_AMP_DIG_VOL_CTL,
CS35L35_AMP_DIGSFT_MASK,
1 << CS35L35_AMP_DIGSFT_SHIFT);
break;
default:
dev_err(codec->dev, "Invalid event = 0x%x\n", event);

3
sound/soc/codecs/cs35l35.h
View File

@ -190,6 +190,9 @@
#define CS35L35_AMP_GAIN_ZC_MASK 0x10
#define CS35L35_AMP_GAIN_ZC_SHIFT 4
#define CS35L35_AMP_DIGSFT_MASK 0x02
#define CS35L35_AMP_DIGSFT_SHIFT 1
/* CS35L35_SP_FMT_CTL3 */
#define CS35L35_SP_I2S_DRV_MASK 0x03
#define CS35L35_SP_I2S_DRV_SHIFT 0