diff options
author | Nikita Yushchenko <nikita.yoush@cogentembedded.com> | 2016-09-22 12:10:40 +0200 |
---|---|---|
committer | Mark Brown <broonie@kernel.org> | 2016-09-24 20:26:59 +0200 |
commit | a114580f8f3e5bdefc14d75d6c3ba7032210b980 (patch) | |
tree | 0f563f289991273024fe34e1a1eafeb2300a551b /sound/soc | |
parent | Linux 4.8-rc1 (diff) | |
download | linux-a114580f8f3e5bdefc14d75d6c3ba7032210b980.tar.xz linux-a114580f8f3e5bdefc14d75d6c3ba7032210b980.zip |
ASoC: tpa6130a2: fix volume setting when no stream is running
After moving tpa6130a2 power management to DAPM, if chip can be physically
powered off (either reset_gpio is defined, or regulator indeed removes
power), then volume change no longer works unless chip is on due to
a running stream.
Fix that by entering regcache cache_only mode while chip is off.
Move regcache calls to tpa6130a2_power() to get them at driver init time
as well.
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc')
-rw-r--r-- | sound/soc/codecs/tpa6130a2.c | 49 |
1 files changed, 26 insertions, 23 deletions
diff --git a/sound/soc/codecs/tpa6130a2.c b/sound/soc/codecs/tpa6130a2.c index f1ea052a822e..3b6faed91d7e 100644 --- a/sound/soc/codecs/tpa6130a2.c +++ b/sound/soc/codecs/tpa6130a2.c @@ -52,7 +52,7 @@ struct tpa6130a2_data { static int tpa6130a2_power(struct tpa6130a2_data *data, bool enable) { - int ret; + int ret = 0, ret2; if (enable) { ret = regulator_enable(data->supply); @@ -64,20 +64,34 @@ static int tpa6130a2_power(struct tpa6130a2_data *data, bool enable) /* Power on */ if (data->power_gpio >= 0) gpio_set_value(data->power_gpio, 1); + + /* Sync registers */ + regcache_cache_only(data->regmap, false); + ret = regcache_sync(data->regmap); + if (ret != 0) { + dev_err(data->dev, + "Failed to sync registers: %d\n", ret); + goto regcache_sync_failed; + } } else { + /* Powered off device does not retain registers. While device + * is off, any register updates (i.e. volume changes) should + * happen in cache only. + */ + regcache_mark_dirty(data->regmap); +regcache_sync_failed: + regcache_cache_only(data->regmap, true); + /* Power off */ if (data->power_gpio >= 0) gpio_set_value(data->power_gpio, 0); - ret = regulator_disable(data->supply); - if (ret != 0) { + ret2 = regulator_disable(data->supply); + if (ret2 != 0) { dev_err(data->dev, - "Failed to disable supply: %d\n", ret); - return ret; + "Failed to disable supply: %d\n", ret2); + return ret ? ret : ret2; } - - /* device regs does not match the cache state anymore */ - regcache_mark_dirty(data->regmap); } return ret; @@ -88,25 +102,14 @@ static int tpa6130a2_power_event(struct snd_soc_dapm_widget *w, { struct snd_soc_component *c = snd_soc_dapm_to_component(w->dapm); struct tpa6130a2_data *data = snd_soc_component_get_drvdata(c); - int ret; - /* before widget power up */ if (SND_SOC_DAPM_EVENT_ON(event)) { - /* Turn on the chip */ - tpa6130a2_power(data, true); - /* Sync the registers */ - ret = regcache_sync(data->regmap); - if (ret < 0) { - dev_err(c->dev, "Failed to initialize chip\n"); - tpa6130a2_power(data, false); - return ret; - } - /* after widget power down */ + /* Before widget power up: turn chip on, sync registers */ + return tpa6130a2_power(data, true); } else { - tpa6130a2_power(data, false); + /* After widget power down: turn chip off */ + return tpa6130a2_power(data, false); } - - return 0; } /* |