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| author | Takashi Iwai <tiwai@suse.de> | 2012-05-08 16:52:23 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2012-05-08 18:00:47 +0200 |
| commit | 7f30830b7b82e5225c38a48b387e44f3defe40e2 (patch) | |
| tree | 18eed775bdfb03289a993de5f2859e0a8683eb74 /sound/pci/hda/hda_codec.c | |
| parent | c382a9f009d7332e16919154e01f5554eeb095ed (diff) | |
| download | op-kernel-dev-7f30830b7b82e5225c38a48b387e44f3defe40e2.zip op-kernel-dev-7f30830b7b82e5225c38a48b387e44f3defe40e2.tar.gz | |
ALSA: hda - Always resume the codec immediately
This is a fix for the problem in commit 785f857d1c, the pop noise
issue on some machines with ALC269. The problem was the uninitialized
state after the resume due to the delayed resume of the codec chips.
In that commit, we tried to fix by forcibly putting the codec to D3 at
suspend. But, this still also leaves the uninitialized state after
resume, and it _might_ be still problematic with some BIOS. Since the
commit turned out to regress another issues, we reverted it in the
end.
Now, in this fix, try to fix by turning on the codec immediately at
the resume path. We need to take care of the power-saving in this
case. When the device is woken up at the power-saved state, it should
go power-saving again after the resume.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda/hda_codec.c')
| -rw-r--r-- | sound/pci/hda/hda_codec.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 98976c8..e134e72 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -3500,6 +3500,10 @@ static void hda_call_codec_suspend(struct hda_codec *codec) */ static void hda_call_codec_resume(struct hda_codec *codec) { + /* set as if powered on for avoiding re-entering the resume + * in the resume / power-save sequence + */ + hda_keep_power_on(codec); hda_set_power_state(codec, codec->afg ? codec->afg : codec->mfg, AC_PWRST_D0); @@ -3515,6 +3519,7 @@ static void hda_call_codec_resume(struct hda_codec *codec) snd_hda_codec_resume_amp(codec); snd_hda_codec_resume_cache(codec); } + snd_hda_power_down(codec); /* flag down before returning */ } #endif /* CONFIG_PM */ @@ -4332,6 +4337,7 @@ void snd_hda_power_up(struct hda_codec *codec) snd_hda_update_power_acct(codec); codec->power_on = 1; codec->power_jiffies = jiffies; + codec->power_transition = 1; /* avoid reentrance */ if (bus->ops.pm_notify) bus->ops.pm_notify(bus); hda_call_codec_resume(codec); @@ -5521,8 +5527,7 @@ int snd_hda_resume(struct hda_bus *bus) list_for_each_entry(codec, &bus->codec_list, list) { if (codec->patch_ops.pre_resume) codec->patch_ops.pre_resume(codec); - if (snd_hda_codec_needs_resume(codec)) - hda_call_codec_resume(codec); + hda_call_codec_resume(codec); } return 0; } |
