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| author | Trent Piepho <xyzzy@speakeasy.org> | 2007-09-06 19:02:25 -0700 |
|---|---|---|
| committer | Trent Piepho <xyzzy@speakeasy.org> | 2007-09-06 19:02:25 -0700 |
| commit | b192ede34d629b1a1ac13ea1931e2d859c747f45 (patch) | |
| tree | bd42014e4ad1bdc3cb51014d011b704500da9a41 | |
| parent | b5642bbab87ea3481e8e93251a76f19cb3121ad2 (diff) | |
| download | mediapointer-dvb-s2-b192ede34d629b1a1ac13ea1931e2d859c747f45.tar.gz mediapointer-dvb-s2-b192ede34d629b1a1ac13ea1931e2d859c747f45.tar.bz2 | |
cx88-alsa: Add TLV support
From: Trent Piepho <xyzzy@speakeasy.org>
Lets mixer apps display a dB range for the volume control.
Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
| -rw-r--r-- | linux/drivers/media/video/cx88/cx88-alsa.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/linux/drivers/media/video/cx88/cx88-alsa.c b/linux/drivers/media/video/cx88/cx88-alsa.c index bb6196ea7..dab6fbc06 100644 --- a/linux/drivers/media/video/cx88/cx88-alsa.c +++ b/linux/drivers/media/video/cx88/cx88-alsa.c @@ -39,6 +39,7 @@ #include <sound/pcm_params.h> #include <sound/control.h> #include <sound/initval.h> +#include <sound/tlv.h> #include "compat.h" #include "cx88.h" @@ -658,12 +659,17 @@ static int snd_cx88_volume_put(struct snd_kcontrol *kcontrol, return changed; } +static const DECLARE_TLV_DB_SCALE(snd_cx88_db_scale, -6300, 100, 0); + static struct snd_kcontrol_new snd_cx88_volume = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | + SNDRV_CTL_ELEM_ACCESS_TLV_READ, .name = "Playback Volume", .info = snd_cx88_volume_info, .get = snd_cx88_volume_get, .put = snd_cx88_volume_put, + .tlv.p = snd_cx88_db_scale, }; static int snd_cx88_switch_get(struct snd_kcontrol *kcontrol, |