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[ALSA] hda-intel - Fix resume logic, when dynamic power managment is on

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Comment in hda_intel.c states that 'the explicit resume is needed only
when POWER_SAVE isn't set', but this is not true.
There is no code that will automaticly power up the codec on resume,
but only code that powers it up when user accesses it. So if user
leaves a sound playing, codec will not be powered
To fix that I check if there are any codecs that should be powered
codec->power_count, and if so I power them up together with main
controller.

Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
This commit is contained in:
Maxim Levitsky
2007-09-03 15:28:04 +02:00
committed by Jaroslav Kysela
parent 2e4924628a
commit d804ad9258
3 changed files with 21 additions and 7 deletions
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8
sound/pci/hda/hda_intel.c
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@ -1586,11 +1586,11 @@ static int azx_resume(struct pci_dev *pci)
if (azx_acquire_irq(chip, 1) < 0)
return -EIO;
azx_init_pci(chip);
#ifndef CONFIG_SND_HDA_POWER_SAVE
/* the explicit resume is needed only when POWER_SAVE isn't set */
azx_init_chip(chip);
if (snd_hda_codecs_inuse(chip->bus))
azx_init_chip(chip);
snd_hda_resume(chip->bus);
#endif
snd_power_change_state(card, SNDRV_CTL_POWER_D0);
return 0;
}