ALSA: usb-audio: more control quirks for M-Audio FastTrack devices

Make use of the freshly introduced methods to re-use standard mixer
handling and add some controls that are hidden but implemented in a
standard conform way on M-Audio's FastTrack devices.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Original-code-by: Felix Homann <linuxaudio@showlabor.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

2 files changed, 72 insertions, 2 deletions

diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
index 9146cffa6ede..3d0f4873112b 100644
--- a/sound/usb/mixer_quirks.c
+++ b/sound/usb/mixer_quirks.c
@@ -40,6 +40,8 @@
 #include "mixer_quirks.h"
 #include "helper.h"
 
+extern struct snd_kcontrol_new *snd_usb_feature_unit_ctl;
+
 /*
  * Sound Blaster remote control configuration
  *
@@ -492,6 +494,69 @@ static int snd_nativeinstruments_create_mixer(struct usb_mixer_interface *mixer,
         return err;
 }
 
+/* M-Audio FastTrack Ultra quirks */
+
+/* private_free callback */
+static void usb_mixer_elem_free(struct snd_kcontrol *kctl)
+{
+        kfree(kctl->private_data);
+        kctl->private_data = NULL;
+}
+
+static int snd_maudio_ftu_create_ctl(struct usb_mixer_interface *mixer,
+                                     int in, int out, const char *name)
+{
+        struct usb_mixer_elem_info *cval;
+        struct snd_kcontrol *kctl;
+
+        cval = kzalloc(sizeof(*cval), GFP_KERNEL);
+        if (!cval)
+                return -ENOMEM;
+
+        cval->id = 5;
+        cval->mixer = mixer;
+        cval->val_type = USB_MIXER_S16;
+        cval->channels = 1;
+        cval->control = out + 1;
+        cval->cmask = 1 << in;
+
+        kctl = snd_ctl_new1(snd_usb_feature_unit_ctl, cval);
+        if (!kctl) {
+                kfree(cval);
+                return -ENOMEM;
+        }
+
+        snprintf(kctl->id.name, sizeof(kctl->id.name), name);
+        kctl->private_free = usb_mixer_elem_free;
+        return snd_usb_mixer_add_control(mixer, kctl);
+}
+
+static int snd_maudio_ftu_create_mixer(struct usb_mixer_interface *mixer)
+{
+        char name[64];
+        int in, out, err;
+
+        for (out = 0; out < 8; out++) {
+                for (in = 0; in < 8; in++) {
+                        snprintf(name, sizeof(name),
+                                 "AIn%d - Out%d Capture Volume", in  + 1, out + 1);
+                        err = snd_maudio_ftu_create_ctl(mixer, in, out, name);
+                        if (err < 0)
+                                return err;
+                }
+
+                for (in = 8; in < 16; in++) {
+                        snprintf(name, sizeof(name),
+                                 "DIn%d - Out%d Playback Volume", in - 7, out + 1);
+                        err = snd_maudio_ftu_create_ctl(mixer, in, out, name);
+                        if (err < 0)
+                                return err;
+                }
+        }
+
+        return 0;
+}
+
 void snd_emuusb_set_samplerate(struct snd_usb_audio *chip,
                                unsigned char samplerate_id)
 {
@@ -533,6 +598,11 @@ int snd_usb_mixer_apply_create_quirk(struct usb_mixer_interface *mixer)
                                               snd_audigy2nx_proc_read);
                 break;
 
+        case USB_ID(0x0763, 0x2080): /* M-Audio Fast Track Ultra */
+        case USB_ID(0x0763, 0x2081): /* M-Audio Fast Track Ultra 8R */
+                err = snd_maudio_ftu_create_mixer(mixer);
+                break;
+
         case USB_ID(0x0b05, 0x1739):
         case USB_ID(0x0b05, 0x1743):
                 err = snd_xonar_u1_controls_create(mixer);
diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h
index 78792a8900c3..0b2ae8e1c02d 100644
--- a/sound/usb/quirks-table.h
+++ b/sound/usb/quirks-table.h
@@ -1988,7 +1988,7 @@ YAMAHA_DEVICE(0x7010, "UB99"),
                 .data = & (const struct snd_usb_audio_quirk[]) {
                         {
                                 .ifnum = 0,
-                                .type = QUIRK_IGNORE_INTERFACE
+                                .type = QUIRK_AUDIO_STANDARD_MIXER,
                         },
                         {
                                 .ifnum = 1,
@@ -2055,7 +2055,7 @@ YAMAHA_DEVICE(0x7010, "UB99"),
                 .data = & (const struct snd_usb_audio_quirk[]) {
                         {
                                 .ifnum = 0,
-                                .type = QUIRK_IGNORE_INTERFACE
+                                .type = QUIRK_AUDIO_STANDARD_MIXER,
                         },
                         {
                                 .ifnum = 1,