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ALSA: usb-audio: Rename and export mixer_vol_tlv

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Rename mixer_vol_tlv to snd_usb_mixer_vol_tlv and export it to make
it reuseable in mixer_quirks.c.

Signed-off-by: Felix Homann <linuxaudio@showlabor.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Felix Homann 2012-04-23 20:24:24 +02:00 committed by Takashi Iwai
parent 8a4d1d397b
commit 285de9c08b
2 changed files with 5 additions and 2 deletions
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4
sound/usb/mixer.c
View File

@ -486,7 +486,7 @@ static int set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel,
/*
* TLV callback for mixer volume controls
*/
static int mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag,
int snd_usb_mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag,
unsigned int size, unsigned int __user *_tlv)
{
struct usb_mixer_elem_info *cval = kcontrol->private_data;
@ -1158,7 +1158,7 @@ static void build_feature_ctl(struct mixer_build *state, void *raw_desc,
if (control == UAC_FU_VOLUME) {
check_mapped_dB(map, cval);
if (cval->dBmin < cval->dBmax || !cval->initialized) {
kctl->tlv.c = mixer_vol_tlv;
kctl->tlv.c = snd_usb_mixer_vol_tlv;
kctl->vd[0].access |=
SNDRV_CTL_ELEM_ACCESS_TLV_READ |
SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;

3
sound/usb/mixer.h
View File

@ -68,4 +68,7 @@ int snd_usb_mixer_activate(struct usb_mixer_interface *mixer);
int snd_usb_mixer_add_control(struct usb_mixer_interface *mixer,
struct snd_kcontrol *kctl);
int snd_usb_mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag,
unsigned int size, unsigned int __user *_tlv);
#endif /* __USBMIXER_H */