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ALSA: hda - Control EAPD for Master volume on Lenovo N100 

Similarly as other laptops with AD1981 & co codecs, we can control
EAPD on AD1986A more safely depending on the Master switch, in order
to save some power.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
hifive-unleashed-5.1
Takashi Iwai 2013-11-13 09:42:56 +01:00
parent 7a3e6107f9
commit f710a9fbd3
1 changed files with 14 additions and 13 deletions
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27
sound/pci/hda/patch_analog.c
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@ -139,6 +139,18 @@ static int ad198x_suspend(struct hda_codec *codec)
}
#endif
/* follow EAPD via vmaster hook */
static void ad_vmaster_eapd_hook(void *private_data, int enabled)
{
struct hda_codec *codec = private_data;
struct ad198x_spec *spec = codec->spec;
if (!spec->eapd_nid)
return;
snd_hda_codec_update_cache(codec, spec->eapd_nid, 0,
AC_VERB_SET_EAPD_BTLENABLE,
enabled ? 0x02 : 0x00);
}
/*
* Automatic parse of I/O pins from the BIOS configuration
@ -224,6 +236,8 @@ static void ad_fixup_inv_jack_detect(struct hda_codec *codec,
if (action == HDA_FIXUP_ACT_PRE_PROBE) {
codec->inv_jack_detect = 1;
spec->gen.keep_eapd_on = 1;
spec->gen.vmaster_mute.hook = ad_vmaster_eapd_hook;
spec->eapd_nid = 0x1b;
}
}
@ -469,19 +483,6 @@ static int patch_ad1983(struct hda_codec *codec)
* AD1981 HD specific
*/
/* follow EAPD via vmaster hook */
static void ad_vmaster_eapd_hook(void *private_data, int enabled)
{
struct hda_codec *codec = private_data;
struct ad198x_spec *spec = codec->spec;
if (!spec->eapd_nid)
return;
snd_hda_codec_update_cache(codec, spec->eapd_nid, 0,
AC_VERB_SET_EAPD_BTLENABLE,
enabled ? 0x02 : 0x00);
}
static void ad1981_fixup_hp_eapd(struct hda_codec *codec,
const struct hda_fixup *fix, int action)
{