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ALSA: hda - Allow to enable/disable vmaster build explicitly 

Another preliminary patch for the dual-codec support: since the
support of vmaster over multiple codecs is difficult, simply disable
it by a new flag to hda_codec struct.  A new user hint is added as
well for consistency.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2017-04-10 17:37:34 +02:00
parent 9f3dadb156
commit 7480316c26
3 changed files with 8 additions and 2 deletions
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2
Documentation/sound/hd-audio/notes.rst
View File

@ -494,6 +494,8 @@ add_hp_mic (bool)
hp_mic_detect (bool)
enable/disable the hp/mic shared input for a single built-in mic
case; default true
vmaster (bool)
enable/disable the virtual Master control; default true
mixer_nid (int)
specifies the widget NID of the analog-loopback mixer

7
sound/pci/hda/hda_generic.c
View File

@ -196,6 +196,9 @@ static void parse_user_hints(struct hda_codec *codec)
val = snd_hda_get_bool_hint(codec, "hp_mic_detect");
if (val >= 0)
spec->suppress_hp_mic_detect = !val;
val = snd_hda_get_bool_hint(codec, "vmaster");
if (val >= 0)
spec->suppress_vmaster = !val;
if (!snd_hda_get_int_hint(codec, "mixer_nid", &val))
spec->mixer_nid = val;
@ -5033,7 +5036,7 @@ int snd_hda_gen_build_controls(struct hda_codec *codec)
}
/* if we have no master control, let's create it */
if (!spec->no_analog &&
if (!spec->no_analog && !spec->suppress_vmaster &&
!snd_hda_find_mixer_ctl(codec, "Master Playback Volume")) {
err = snd_hda_add_vmaster(codec, "Master Playback Volume",
spec->vmaster_tlv, slave_pfxs,
@ -5041,7 +5044,7 @@ int snd_hda_gen_build_controls(struct hda_codec *codec)
if (err < 0)
return err;
}
if (!spec->no_analog &&
if (!spec->no_analog && !spec->suppress_vmaster &&
!snd_hda_find_mixer_ctl(codec, "Master Playback Switch")) {
err = __snd_hda_add_vmaster(codec, "Master Playback Switch",
NULL, slave_pfxs,

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

@ -229,6 +229,7 @@ struct hda_gen_spec {
unsigned int add_jack_modes:1; /* add i/o jack mode enum ctls */
unsigned int power_down_unused:1; /* power down unused widgets */
unsigned int dac_min_mute:1; /* minimal = mute for DACs */
unsigned int suppress_vmaster:1; /* don't create vmaster kctls */
/* other internal flags */
unsigned int no_analog:1; /* digital I/O only */