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-rw-r--r--sound/usb/mixer.c4
-rw-r--r--sound/usb/mixer.h1
-rw-r--r--sound/usb/mixer_quirks.c16
3 files changed, 20 insertions, 1 deletions
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index 298070e8f2d4..b0fc6ae037a2 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -382,6 +382,8 @@ error:
static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret)
{
+ validx += cval->idx_off;
+
return (cval->mixer->protocol == UAC_VERSION_1) ?
get_ctl_value_v1(cval, request, validx, value_ret) :
get_ctl_value_v2(cval, request, validx, value_ret);
@@ -432,6 +434,8 @@ int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval,
unsigned char buf[2];
int idx = 0, val_len, err, timeout = 10;
+ validx += cval->idx_off;
+
if (cval->mixer->protocol == UAC_VERSION_1) {
val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
} else { /* UAC_VERSION_2 */
diff --git a/sound/usb/mixer.h b/sound/usb/mixer.h
index a7f3d45a8acf..aab80df201bd 100644
--- a/sound/usb/mixer.h
+++ b/sound/usb/mixer.h
@@ -43,6 +43,7 @@ struct usb_mixer_elem_info {
unsigned int id;
unsigned int control; /* CS or ICN (high byte) */
unsigned int cmask; /* channel mask bitmap: 0 = master */
+ unsigned int idx_off; /* Control index offset */
unsigned int ch_readonly;
unsigned int master_readonly;
int channels;
diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
index ae2b71435220..4199b97e76a1 100644
--- a/sound/usb/mixer_quirks.c
+++ b/sound/usb/mixer_quirks.c
@@ -63,11 +63,12 @@ static void usb_mixer_elem_free(struct snd_kcontrol *kctl)
* Since there doesn't seem to be a devices that needs a multichannel
* version, we keep it mono for simplicity.
*/
-static int snd_create_std_mono_ctl(struct usb_mixer_interface *mixer,
+static int snd_create_std_mono_ctl_offset(struct usb_mixer_interface *mixer,
unsigned int unitid,
unsigned int control,
unsigned int cmask,
int val_type,
+ unsigned int idx_off,
const char *name,
snd_kcontrol_tlv_rw_t *tlv_callback)
{
@@ -85,6 +86,7 @@ static int snd_create_std_mono_ctl(struct usb_mixer_interface *mixer,
cval->channels = 1;
cval->control = control;
cval->cmask = cmask;
+ cval->idx_off = idx_off;
/* get_min_max() is called only for integer volumes later,
* so provide a short-cut for booleans */
@@ -120,6 +122,18 @@ static int snd_create_std_mono_ctl(struct usb_mixer_interface *mixer,
return 0;
}
+static int snd_create_std_mono_ctl(struct usb_mixer_interface *mixer,
+ unsigned int unitid,
+ unsigned int control,
+ unsigned int cmask,
+ int val_type,
+ const char *name,
+ snd_kcontrol_tlv_rw_t *tlv_callback)
+{
+ return snd_create_std_mono_ctl_offset(mixer, unitid, control, cmask,
+ val_type, 0 /* Offset */, name, tlv_callback);
+}
+
/*
* Create a set of standard UAC controls from a table
*/