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ALSA: hda - Fix invalid mute led state on resume of IDT codecs

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Codec state is not restored immediately on resume but on the first
access when power-save is enabled.  That leads to an invalid mute led
state after resume until either sound is played or some control is
changed.  This patch adds a possibility for a vendor specific patch to
restore codec state immediately after resume if required.  And it adds
code to restore IDT codecs state immediately on resume on HP systems
with mute led support.

Signed-off-by: Vitaliy Kulikov <Vitaliy.Kulikov@idt.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Vitaliy Kulikov 2011-07-22 18:18:15 -05:00 committed by Takashi Iwai
parent 0c27c18052
commit d02667e620
3 changed files with 17 additions and 0 deletions
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2
sound/pci/hda/hda_codec.c
View File

@ -5103,6 +5103,8 @@ int snd_hda_resume(struct hda_bus *bus)
struct hda_codec *codec;
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);
}

3
sound/pci/hda/hda_codec.h
View File

@ -712,6 +712,9 @@ struct hda_codec_ops {
int (*check_power_status)(struct hda_codec *codec, hda_nid_t nid);
#endif
void (*reboot_notify)(struct hda_codec *codec);
#ifdef SND_HDA_NEEDS_RESUME
int (*pre_resume)(struct hda_codec *codec);
#endif
};
/* record for amp information cache */

12
sound/pci/hda/patch_sigmatel.c
View File

@ -4935,6 +4935,17 @@ static void stac927x_proc_hook(struct snd_info_buffer *buffer,
#endif
#ifdef SND_HDA_NEEDS_RESUME
static int stac92xx_pre_resume(struct hda_codec *codec)
{
struct sigmatel_spec *spec = codec->spec;
/* sync mute LED */
if (spec->gpio_led)
stac_gpio_set(codec, spec->gpio_mask,
spec->gpio_dir, spec->gpio_data);
return 0;
}
static int stac92xx_resume(struct hda_codec *codec)
{
struct sigmatel_spec *spec = codec->spec;
@ -5013,6 +5024,7 @@ static const struct hda_codec_ops stac92xx_patch_ops = {
#ifdef SND_HDA_NEEDS_RESUME
.suspend = stac92xx_suspend,
.resume = stac92xx_resume,
.pre_resume = stac92xx_pre_resume,
#endif
.reboot_notify = stac92xx_shutup,
};