From: Gergo Koteles soyer@irl.hu
[ Upstream commit 9fc91a6fe37c78ef301aed4251f7e50b8524e72d ]
After system_resume the amplifers will remain off, even if they were on before system_suspend.
Use playback_started bool to save the playback state, and restore power state based on it.
Fixes: 5be27f1e3ec9 ("ALSA: hda/tas2781: Add tas2781 HDA driver") Signed-off-by: Gergo Koteles soyer@irl.hu Signed-off-by: Takashi Iwai tiwai@suse.de Message-ID: 1742b61901781826f6e6212ffe1d21af542d134a.1709918447.git.soyer@irl.hu Signed-off-by: Sasha Levin sashal@kernel.org --- sound/pci/hda/tas2781_hda_i2c.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/sound/pci/hda/tas2781_hda_i2c.c b/sound/pci/hda/tas2781_hda_i2c.c index a63860f0e283d..4c1fb4e87faaf 100644 --- a/sound/pci/hda/tas2781_hda_i2c.c +++ b/sound/pci/hda/tas2781_hda_i2c.c @@ -142,11 +142,13 @@ static void tas2781_hda_playback_hook(struct device *dev, int action) pm_runtime_get_sync(dev); mutex_lock(&tas_hda->priv->codec_lock); tasdevice_tuning_switch(tas_hda->priv, 0); + tas_hda->priv->playback_started = true; mutex_unlock(&tas_hda->priv->codec_lock); break; case HDA_GEN_PCM_ACT_CLOSE: mutex_lock(&tas_hda->priv->codec_lock); tasdevice_tuning_switch(tas_hda->priv, 1); + tas_hda->priv->playback_started = false; mutex_unlock(&tas_hda->priv->codec_lock);
pm_runtime_mark_last_busy(dev); @@ -585,6 +587,7 @@ static void tasdev_fw_ready(const struct firmware *fmw, void *context) tasdevice_save_calibration(tas_priv);
tasdevice_tuning_switch(tas_hda->priv, 0); + tas_hda->priv->playback_started = true;
out: mutex_unlock(&tas_hda->priv->codec_lock); @@ -750,6 +753,9 @@ static int tas2781_runtime_suspend(struct device *dev)
mutex_lock(&tas_hda->priv->codec_lock);
+ /* The driver powers up the amplifiers at module load time. + * Stop the playback if it's unused. + */ if (tas_hda->priv->playback_started) { tasdevice_tuning_switch(tas_hda->priv, 1); tas_hda->priv->playback_started = false; @@ -789,7 +795,8 @@ static int tas2781_system_suspend(struct device *dev) mutex_lock(&tas_hda->priv->codec_lock);
/* Shutdown chip before system suspend */ - tasdevice_tuning_switch(tas_hda->priv, 1); + if (tas_hda->priv->playback_started) + tasdevice_tuning_switch(tas_hda->priv, 1);
mutex_unlock(&tas_hda->priv->codec_lock);
@@ -821,6 +828,10 @@ static int tas2781_system_resume(struct device *dev) * calibrated data inside algo. */ tasdevice_apply_calibration(tas_hda->priv); + + if (tas_hda->priv->playback_started) + tasdevice_tuning_switch(tas_hda->priv, 0); + mutex_unlock(&tas_hda->priv->codec_lock);
return 0;