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ALSA: hda - Return the created kcontrol in __snd_hda_add_vmaster()

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It'll be used for adding hooks in later patches.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2012-03-12 12:25:03 +01:00
parent 2ad787e9aa
commit 29e5853d61
3 changed files with 13 additions and 5 deletions
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9
sound/pci/hda/hda_codec.c
View file

@ -2399,6 +2399,7 @@ static int init_slave_unmute(void *data, struct snd_kcontrol *slave)
* @slaves: slave control names (optional) * @slaves: slave control names (optional)
* @suffix: suffix string to each slave name (optional) * @suffix: suffix string to each slave name (optional)
* @init_slave_vol: initialize slaves to unmute/0dB * @init_slave_vol: initialize slaves to unmute/0dB
* @ctl_ret: store the vmaster kcontrol in return
* *
* Create a virtual master control with the given name. The TLV data * Create a virtual master control with the given name. The TLV data
* must be either NULL or a valid data. * must be either NULL or a valid data.
@ -2411,11 +2412,15 @@ static int init_slave_unmute(void *data, struct snd_kcontrol *slave)
*/ */
int __snd_hda_add_vmaster(struct hda_codec *codec, char *name, int __snd_hda_add_vmaster(struct hda_codec *codec, char *name,
unsigned int *tlv, const char * const *slaves, unsigned int *tlv, const char * const *slaves,
const char *suffix, bool init_slave_vol) const char *suffix, bool init_slave_vol,
struct snd_kcontrol **ctl_ret)
{ {
struct snd_kcontrol *kctl; struct snd_kcontrol *kctl;
int err; int err;
if (ctl_ret)
*ctl_ret = NULL;
err = map_slaves(codec, slaves, suffix, check_slave_present, NULL); err = map_slaves(codec, slaves, suffix, check_slave_present, NULL);
if (err != 1) { if (err != 1) {
snd_printdd("No slave found for %s\n", name); snd_printdd("No slave found for %s\n", name);
@ -2439,6 +2444,8 @@ int __snd_hda_add_vmaster(struct hda_codec *codec, char *name,
map_slaves(codec, slaves, suffix, map_slaves(codec, slaves, suffix,
tlv ? init_slave_0dB : init_slave_unmute, kctl); tlv ? init_slave_0dB : init_slave_unmute, kctl);
if (ctl_ret)
*ctl_ret = kctl;
return 0; return 0;
} }
EXPORT_SYMBOL_HDA(__snd_hda_add_vmaster); EXPORT_SYMBOL_HDA(__snd_hda_add_vmaster);

5
sound/pci/hda/hda_local.h
View file

@ -141,9 +141,10 @@ struct snd_kcontrol *snd_hda_find_mixer_ctl(struct hda_codec *codec,
const char *name); const char *name);
int __snd_hda_add_vmaster(struct hda_codec *codec, char *name, int __snd_hda_add_vmaster(struct hda_codec *codec, char *name,
unsigned int *tlv, const char * const *slaves, unsigned int *tlv, const char * const *slaves,
const char *suffix, bool init_slave_vol); const char *suffix, bool init_slave_vol,
struct snd_kcontrol **ctl_ret);
#define snd_hda_add_vmaster(codec, name, tlv, slaves, suffix) \ #define snd_hda_add_vmaster(codec, name, tlv, slaves, suffix) \
__snd_hda_add_vmaster(codec, name, tlv, slaves, suffix, true) __snd_hda_add_vmaster(codec, name, tlv, slaves, suffix, true, NULL)
int snd_hda_codec_reset(struct hda_codec *codec); int snd_hda_codec_reset(struct hda_codec *codec);
/* amp value bits */ /* amp value bits */

2
sound/pci/hda/patch_analog.c
View file

@ -229,7 +229,7 @@ static int ad198x_build_controls(struct hda_codec *codec)
(spec->slave_vols ? (spec->slave_vols ?
spec->slave_vols : ad_slave_pfxs), spec->slave_vols : ad_slave_pfxs),
"Playback Volume", "Playback Volume",
!spec->avoid_init_slave_vol); !spec->avoid_init_slave_vol, NULL);
if (err < 0) if (err < 0)
return err; return err;
} }