From 3e8b5c5460b795c3e50f8221c7ee12858264ae76 Mon Sep 17 00:00:00 2001 From: Manoj Gangwal Date: Thu, 24 May 2012 19:30:36 +0530 Subject: asoc: codecs: ALC5639/40: Change to reduce codec pwr in lp0 Bug 964287 1) Add support for resetting the codec while entering in lp0 state to save codec power in lpo for KAI. 2) Fix for cache sync. 3) Add index sync functionality. Change-Id: I04039eb55944bfe7f06e6a1405ac3c810c5688a1 Signed-off-by: Manoj Gangwal Reviewed-on: http://git-master/r/104480 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Tested-by: Daniel Solomon Reviewed-by: Scott Peterson --- sound/soc/codecs/rt5639.c | 24 ++++++++++++++++++++++++ sound/soc/codecs/rt5640.c | 23 +++++++++++++++++++++++ 2 files changed, 47 insertions(+) diff --git a/sound/soc/codecs/rt5639.c b/sound/soc/codecs/rt5639.c index c9b14e9f0bc1..13190e21404b 100644 --- a/sound/soc/codecs/rt5639.c +++ b/sound/soc/codecs/rt5639.c @@ -105,6 +105,18 @@ static int rt5639_reg_init(struct snd_soc_codec *codec) } #endif +static int rt5639_index_sync(struct snd_soc_codec *codec) +{ + int i; + + for (i = 0; i < RT5639_INIT_REG_LEN; i++) + if (RT5639_PRIV_INDEX == init_list[i].reg || + RT5639_PRIV_DATA == init_list[i].reg) + snd_soc_write(codec, init_list[i].reg, + init_list[i].val); + return 0; +} + static const u16 rt5639_reg[RT5639_VENDOR_ID2 + 1] = { [RT5639_RESET] = 0x0008, [RT5639_SPK_VOL] = 0xc8c8, @@ -2213,7 +2225,9 @@ static int rt5639_set_bias_level(struct snd_soc_codec *codec, RT5639_PWR_FV1 | RT5639_PWR_FV2, RT5639_PWR_FV1 | RT5639_PWR_FV2); codec->cache_only = false; + codec->cache_sync = 1; snd_soc_cache_sync(codec); + rt5639_index_sync(codec); } break; @@ -2311,13 +2325,23 @@ static int rt5639_remove(struct snd_soc_codec *codec) #ifdef CONFIG_PM static int rt5639_suspend(struct snd_soc_codec *codec, pm_message_t state) { + rt5639_reset(codec); rt5639_set_bias_level(codec, SND_SOC_BIAS_OFF); return 0; } static int rt5639_resume(struct snd_soc_codec *codec) { + int ret = 0 ; + + codec->cache_sync = 1; + ret = snd_soc_cache_sync(codec); + if (ret) { + dev_err(codec->dev,"Failed to sync cache: %d\n", ret); + return ret; + } rt5639_set_bias_level(codec, SND_SOC_BIAS_STANDBY); + return 0; } #else diff --git a/sound/soc/codecs/rt5640.c b/sound/soc/codecs/rt5640.c index 8407c638cf8a..49256e2d151d 100644 --- a/sound/soc/codecs/rt5640.c +++ b/sound/soc/codecs/rt5640.c @@ -106,6 +106,18 @@ static int rt5640_reg_init(struct snd_soc_codec *codec) } #endif +static int rt5640_index_sync(struct snd_soc_codec *codec) +{ + int i; + + for (i = 0; i < RT5640_INIT_REG_LEN; i++) + if (RT5640_PRIV_INDEX == init_list[i].reg || + RT5640_PRIV_DATA == init_list[i].reg) + snd_soc_write(codec, init_list[i].reg, + init_list[i].val); + return 0; +} + static const u16 rt5640_reg[RT5640_VENDOR_ID2 + 1] = { [RT5640_RESET] = 0x000c, [RT5640_SPK_VOL] = 0xc8c8, @@ -2269,7 +2281,9 @@ static int rt5640_set_bias_level(struct snd_soc_codec *codec, RT5640_PWR_FV1 | RT5640_PWR_FV2, RT5640_PWR_FV1 | RT5640_PWR_FV2); codec->cache_only = false; + codec->cache_sync = 1; snd_soc_cache_sync(codec); + rt5640_index_sync(codec); } break; @@ -2381,6 +2395,7 @@ static int rt5640_remove(struct snd_soc_codec *codec) #ifdef CONFIG_PM static int rt5640_suspend(struct snd_soc_codec *codec, pm_message_t state) { + rt5640_reset(codec); rt5640_set_bias_level(codec, SND_SOC_BIAS_OFF); snd_soc_write(codec, RT5640_PWR_ANLG1, 0); @@ -2389,6 +2404,14 @@ static int rt5640_suspend(struct snd_soc_codec *codec, pm_message_t state) static int rt5640_resume(struct snd_soc_codec *codec) { + int ret = 0 ; + + codec->cache_sync = 1; + ret = snd_soc_cache_sync(codec); + if (ret) { + dev_err(codec->dev,"Failed to sync cache: %d\n", ret); + return ret; + } rt5640_set_bias_level(codec, SND_SOC_BIAS_STANDBY); return 0; -- cgit v1.2.3