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ALSA: hda/tas2781: restore power state after system_resume

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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: 5be27f1e3e ("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>
This commit is contained in:
Gergo Koteles 2024-03-08 18:41:44 +01:00 committed by Takashi Iwai
parent 5f51de7e30
commit 9fc91a6fe3
1 changed files with 12 additions and 1 deletions
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13
sound/pci/hda/tas2781_hda_i2c.c
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@ -160,11 +160,13 @@ 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);
@ -666,6 +668,7 @@ 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);
@ -837,6 +840,9 @@ 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;
@ -876,7 +882,8 @@ 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);
@ -908,6 +915,10 @@ 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;