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authorTakashi Iwai <tiwai@suse.de>2007-07-23 09:41:34 -0400
committerJaroslav Kysela <perex@perex.cz>2007-10-16 09:57:44 -0400
commitb9ed4f2b68dc47b0c35c1a3ae8ae97c2517d5177 (patch)
treec967e895a8955cf5852d8155185e82316dd0beec
parent90fd5ce5f67968d3250eeab9bc1f6822644347ef (diff)
[ALSA] Add helper functions for frequently used callbacks
Added helper functions for frequenty used callbacks: snd_ctl_boolean_mono_info() and snd_ctl_boolean_stereo_info() Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
-rw-r--r--include/sound/control.h8
-rw-r--r--sound/core/control.c27
2 files changed, 35 insertions, 0 deletions
diff --git a/include/sound/control.h b/include/sound/control.h
index 72e759f619b1..b26d4633ee2c 100644
--- a/include/sound/control.h
+++ b/include/sound/control.h
@@ -161,4 +161,12 @@ static inline struct snd_ctl_elem_id *snd_ctl_build_ioff(struct snd_ctl_elem_id
161 return dst_id; 161 return dst_id;
162} 162}
163 163
164/*
165 * Frequently used control callbacks
166 */
167int snd_ctl_boolean_mono_info(struct snd_kcontrol *kcontrol,
168 struct snd_ctl_elem_info *uinfo);
169int snd_ctl_boolean_stereo_info(struct snd_kcontrol *kcontrol,
170 struct snd_ctl_elem_info *uinfo);
171
164#endif /* __SOUND_CONTROL_H */ 172#endif /* __SOUND_CONTROL_H */
diff --git a/sound/core/control.c b/sound/core/control.c
index 1f1ab9c1b668..396e98ed086a 100644
--- a/sound/core/control.c
+++ b/sound/core/control.c
@@ -1486,3 +1486,30 @@ int snd_ctl_create(struct snd_card *card)
1486 snd_assert(card != NULL, return -ENXIO); 1486 snd_assert(card != NULL, return -ENXIO);
1487 return snd_device_new(card, SNDRV_DEV_CONTROL, card, &ops); 1487 return snd_device_new(card, SNDRV_DEV_CONTROL, card, &ops);
1488} 1488}
1489
1490/*
1491 * Frequently used control callbacks
1492 */
1493int snd_ctl_boolean_mono_info(struct snd_kcontrol *kcontrol,
1494 struct snd_ctl_elem_info *uinfo)
1495{
1496 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1497 uinfo->count = 1;
1498 uinfo->value.integer.min = 0;
1499 uinfo->value.integer.max = 1;
1500 return 0;
1501}
1502
1503EXPORT_SYMBOL(snd_ctl_boolean_mono_info);
1504
1505int snd_ctl_boolean_stereo_info(struct snd_kcontrol *kcontrol,
1506 struct snd_ctl_elem_info *uinfo)
1507{
1508 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1509 uinfo->count = 2;
1510 uinfo->value.integer.min = 0;
1511 uinfo->value.integer.max = 1;
1512 return 0;
1513}
1514
1515EXPORT_SYMBOL(snd_ctl_boolean_stereo_info);