From dc152164128717fb0828a268f4b7fe8c5e821e85 Mon Sep 17 00:00:00 2001 From: Pierre-Louis Bossart Date: Mon, 7 Jun 2021 17:22:26 -0500 Subject: [PATCH] ASoC: max98373-sdw: use first_hw_init flag on resume [ 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 Reviewed-by: Guennadi Liakhovetski Reviewed-by: Bard Liao Link: https://lore.kernel.org/r/20210607222239.582139-3-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- 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 14fd2f9..39afa01 100644 --- a/sound/soc/codecs/max98373-sdw.c +++ b/sound/soc/codecs/max98373-sdw.c @@ -258,7 +258,7 @@ 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) @@ -349,7 +349,7 @@ 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); } @@ -357,7 +357,7 @@ 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); @@ -449,12 +449,12 @@ 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); @@ -773,7 +773,7 @@ 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 4ab29b9..010f6bb 100644 --- a/sound/soc/codecs/max98373.h +++ b/sound/soc/codecs/max98373.h @@ -215,7 +215,7 @@ 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; }; -- 2.7.4