mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-16 17:23:55 +08:00
ALSA: HDA: add powersaving hook for Realtek
The current Realtek code makes no specific provision for turning stuff off. The codec chip is placed into low-power mode generically, but this doesn't turn off any external hardware connected to it, in particular external amplifiers. This patch creates a hook function that is called by the codec suspend/resume functions. It ought to disable any external hardware in a device-specific way. I've implemented a generic ALC889 function that sets the EAPD pin properly, and used it for the Acer Aspire 8930G which can benefit from this feature. On my laptop, this results in ~0.5W extra savings. Signed-off-by: Hector Martin <hector@marcansoft.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
parent
556eea9a92
commit
f5de24b06a
@ -337,6 +337,9 @@ struct alc_spec {
|
||||
/* hooks */
|
||||
void (*init_hook)(struct hda_codec *codec);
|
||||
void (*unsol_event)(struct hda_codec *codec, unsigned int res);
|
||||
#ifdef CONFIG_SND_HDA_POWER_SAVE
|
||||
void (*power_hook)(struct hda_codec *codec, int power);
|
||||
#endif
|
||||
|
||||
/* for pin sensing */
|
||||
unsigned int sense_updated: 1;
|
||||
@ -388,6 +391,7 @@ struct alc_config_preset {
|
||||
void (*init_hook)(struct hda_codec *);
|
||||
#ifdef CONFIG_SND_HDA_POWER_SAVE
|
||||
struct hda_amp_list *loopbacks;
|
||||
void (*power_hook)(struct hda_codec *codec, int power);
|
||||
#endif
|
||||
};
|
||||
|
||||
@ -900,6 +904,7 @@ static void setup_preset(struct hda_codec *codec,
|
||||
spec->unsol_event = preset->unsol_event;
|
||||
spec->init_hook = preset->init_hook;
|
||||
#ifdef CONFIG_SND_HDA_POWER_SAVE
|
||||
spec->power_hook = preset->power_hook;
|
||||
spec->loopback.amplist = preset->loopbacks;
|
||||
#endif
|
||||
|
||||
@ -1826,6 +1831,16 @@ static void alc889_acer_aspire_8930g_setup(struct hda_codec *codec)
|
||||
spec->autocfg.speaker_pins[2] = 0x1b;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_SND_HDA_POWER_SAVE
|
||||
static void alc889_power_eapd(struct hda_codec *codec, int power)
|
||||
{
|
||||
snd_hda_codec_write(codec, 0x14, 0,
|
||||
AC_VERB_SET_EAPD_BTLENABLE, power ? 2 : 0);
|
||||
snd_hda_codec_write(codec, 0x15, 0,
|
||||
AC_VERB_SET_EAPD_BTLENABLE, power ? 2 : 0);
|
||||
}
|
||||
#endif
|
||||
|
||||
/*
|
||||
* ALC880 3-stack model
|
||||
*
|
||||
@ -3619,12 +3634,29 @@ static void alc_free(struct hda_codec *codec)
|
||||
snd_hda_detach_beep_device(codec);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_SND_HDA_POWER_SAVE
|
||||
static int alc_suspend(struct hda_codec *codec, pm_message_t state)
|
||||
{
|
||||
struct alc_spec *spec = codec->spec;
|
||||
if (spec && spec->power_hook)
|
||||
spec->power_hook(codec, 0);
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef SND_HDA_NEEDS_RESUME
|
||||
static int alc_resume(struct hda_codec *codec)
|
||||
{
|
||||
#ifdef CONFIG_SND_HDA_POWER_SAVE
|
||||
struct alc_spec *spec = codec->spec;
|
||||
#endif
|
||||
codec->patch_ops.init(codec);
|
||||
snd_hda_codec_resume_amp(codec);
|
||||
snd_hda_codec_resume_cache(codec);
|
||||
#ifdef CONFIG_SND_HDA_POWER_SAVE
|
||||
if (spec && spec->power_hook)
|
||||
spec->power_hook(codec, 1);
|
||||
#endif
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
@ -3641,6 +3673,7 @@ static struct hda_codec_ops alc_patch_ops = {
|
||||
.resume = alc_resume,
|
||||
#endif
|
||||
#ifdef CONFIG_SND_HDA_POWER_SAVE
|
||||
.suspend = alc_suspend,
|
||||
.check_power_status = alc_check_power_status,
|
||||
#endif
|
||||
};
|
||||
@ -9420,6 +9453,9 @@ static struct alc_config_preset alc882_presets[] = {
|
||||
.unsol_event = alc_automute_amp_unsol_event,
|
||||
.setup = alc889_acer_aspire_8930g_setup,
|
||||
.init_hook = alc_automute_amp,
|
||||
#ifdef CONFIG_SND_HDA_POWER_SAVE
|
||||
.power_hook = alc889_power_eapd,
|
||||
#endif
|
||||
},
|
||||
[ALC888_ACER_ASPIRE_7730G] = {
|
||||
.mixers = { alc883_3ST_6ch_mixer,
|
||||
|
Loading…
Reference in New Issue
Block a user