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Commit fb567a8e authored by Takashi Iwai's avatar Takashi Iwai Committed by Jaroslav Kysela
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[ALSA] Add dB scale information to dummy driver 



Added the dB scale information to dummy driver.

Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarJaroslav Kysela <perex@suse.cz>
parent a0aef8ed

sound/drivers/dummy.c

+8 −2
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ 
#include <linux/moduleparam.h>

#include <sound/core.h>

#include <sound/control.h>

#include <sound/tlv.h>

#include <sound/pcm.h>

#include <sound/rawmidi.h>

#include <sound/initval.h>
@@ -443,10 +444,13 @@ static int __init snd_card_dummy_pcm(struct snd_dummy *dummy, int device, int su 
}



#define DUMMY_VOLUME(xname, xindex, addr) \

{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \

{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \

  .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \

  .name = xname, .index = xindex, \

  .info = snd_dummy_volume_info, \

  .get = snd_dummy_volume_get, .put = snd_dummy_volume_put, \

  .private_value = addr }

  .private_value = addr, \

  .tlv = { .p = db_scale_dummy } }



static int snd_dummy_volume_info(struct snd_kcontrol *kcontrol,

				 struct snd_ctl_elem_info *uinfo)
@@ -497,6 +501,8 @@ static int snd_dummy_volume_put(struct snd_kcontrol *kcontrol, 
	return change;

}



static DECLARE_TLV_DB_SCALE(db_scale_dummy, -4500, 30, 0);



#define DUMMY_CAPSRC(xname, xindex, addr) \

{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \

  .info = snd_dummy_capsrc_info, \