From: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com
[ Upstream commit bf881170311ea74ff30c3be0be8fb097132ce696 ]
The intent of the status check on resume was to verify if a SoundWire peripheral reported ATTACHED before waiting for the initialization to complete. This is required to avoid timeouts that will happen with 'ghost' devices that are exposed in the platform firmware but are not populated in hardware.
Unfortunately we used 'hw_init' instead of 'first_hw_init'. Due to another error, the resume operation never timed out, but the volume settings were not properly restored.
This patch renames the status flag to 'first_hw_init' for consistency with other drivers.
BugLink: https://github.com/thesofproject/linux/issues/2637 Fixes: 56a5b7910e96 ('ASoC: codecs: max98373: add SoundWire support') Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Reviewed-by: Guennadi Liakhovetski guennadi.liakhovetski@linux.intel.com Reviewed-by: Bard Liao bard.liao@intel.com Link: https://lore.kernel.org/r/20210607222239.582139-3-pierre-louis.bossart@linux... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- sound/soc/codecs/max98373-sdw.c | 12 ++++++------ sound/soc/codecs/max98373.h | 2 +- 2 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/sound/soc/codecs/max98373-sdw.c b/sound/soc/codecs/max98373-sdw.c index c7a3506046db..dc520effc61c 100644 --- a/sound/soc/codecs/max98373-sdw.c +++ b/sound/soc/codecs/max98373-sdw.c @@ -271,7 +271,7 @@ static __maybe_unused int max98373_resume(struct device *dev) struct max98373_priv *max98373 = dev_get_drvdata(dev); unsigned long time;
- if (!max98373->hw_init) + if (!max98373->first_hw_init) return 0;
if (!slave->unattach_request) @@ -362,7 +362,7 @@ static int max98373_io_init(struct sdw_slave *slave) struct device *dev = &slave->dev; struct max98373_priv *max98373 = dev_get_drvdata(dev);
- if (max98373->pm_init_once) { + if (max98373->first_hw_init) { regcache_cache_only(max98373->regmap, false); regcache_cache_bypass(max98373->regmap, true); } @@ -370,7 +370,7 @@ static int max98373_io_init(struct sdw_slave *slave) /* * PM runtime is only enabled when a Slave reports as Attached */ - if (!max98373->pm_init_once) { + if (!max98373->first_hw_init) { /* set autosuspend parameters */ pm_runtime_set_autosuspend_delay(dev, 3000); pm_runtime_use_autosuspend(dev); @@ -462,12 +462,12 @@ static int max98373_io_init(struct sdw_slave *slave) regmap_write(max98373->regmap, MAX98373_R20B5_BDE_EN, 1); regmap_write(max98373->regmap, MAX98373_R20E2_LIMITER_EN, 1);
- if (max98373->pm_init_once) { + if (max98373->first_hw_init) { regcache_cache_bypass(max98373->regmap, false); regcache_mark_dirty(max98373->regmap); }
- max98373->pm_init_once = true; + max98373->first_hw_init = true; max98373->hw_init = true;
pm_runtime_mark_last_busy(dev); @@ -797,7 +797,7 @@ static int max98373_init(struct sdw_slave *slave, struct regmap *regmap) max98373_slot_config(dev, max98373);
max98373->hw_init = false; - max98373->pm_init_once = false; + max98373->first_hw_init = false;
/* codec registration */ ret = devm_snd_soc_register_component(dev, &soc_codec_dev_max98373_sdw, diff --git a/sound/soc/codecs/max98373.h b/sound/soc/codecs/max98373.h index 73a2cf69d84a..e1810b3b1620 100644 --- a/sound/soc/codecs/max98373.h +++ b/sound/soc/codecs/max98373.h @@ -226,7 +226,7 @@ struct max98373_priv { /* variables to support soundwire */ struct sdw_slave *slave; bool hw_init; - bool pm_init_once; + bool first_hw_init; int slot; unsigned int rx_mask; };