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ALSA: hda - Add keep_eapd_on flag to generic parser

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VT1802 codec seems to reset EAPD of other pins in the hardware level,
and this was another reason of the silent headphone output on some
machines.  As a workaround, introduce a new flag indicating to keep
the EPAD on to the generic parser, and set it in patch_via.c.

Reported-by: Alex Riesen <raa.lkml@gmail.com>
Cc: <stable@vger.kernel.org> [v3.9]
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2013-05-31 19:55:54 +02:00
parent 77afe0e948
commit 05909d5c67
3 changed files with 4 additions and 0 deletions
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2
sound/pci/hda/hda_generic.c
View File

@ -788,6 +788,8 @@ static void set_pin_eapd(struct hda_codec *codec, hda_nid_t pin, bool enable)
return;
if (codec->inv_eapd)
enable = !enable;
if (spec->keep_eapd_on && !enable)
return;
snd_hda_codec_update_cache(codec, pin, 0,
AC_VERB_SET_EAPD_BTLENABLE,
enable ? 0x02 : 0x00);

1
sound/pci/hda/hda_generic.h
View File

@ -222,6 +222,7 @@ struct hda_gen_spec {
unsigned int multi_cap_vol:1; /* allow multiple capture xxx volumes */
unsigned int inv_dmic_split:1; /* inverted dmic w/a for conexant */
unsigned int own_eapd_ctl:1; /* set EAPD by own function */
unsigned int keep_eapd_on:1; /* don't turn off EAPD automatically */
unsigned int vmaster_mute_enum:1; /* add vmaster mute mode enum */
unsigned int indep_hp:1; /* independent HP supported */
unsigned int prefer_hp_amp:1; /* enable HP amp for speaker if any */

1
sound/pci/hda/patch_via.c
View File

@ -136,6 +136,7 @@ static struct via_spec *via_new_spec(struct hda_codec *codec)
spec->codec_type = VT1708S;
spec->no_pin_power_ctl = 1;
spec->gen.indep_hp = 1;
spec->gen.keep_eapd_on = 1;
spec->gen.pcm_playback_hook = via_playback_pcm_hook;
return spec;
}