ALSA: usb-audio: add support for Native Instruments MK2 devices
The MK2 generation of Native Instruments' sound cards are in fact
compliant to the USB audio standard of version 2 and other approved USB
standards. However, they come up as vendor-specific device when first
connected but can be told to come up with a new set of descriptors
upon their next enumeration. The interfaces announced by the new
descriptors will be handled by the kernel's class drivers. This is done
by issuing a vendor specific device request and sending the device to
reset.
There are also some vendor-specific USB requests for some mixer elements
that can't be exported in a standard compliant way. The driver now
supports them with quirks handling mechanisms.
Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
index 782f741..3fe612a 100644
--- a/sound/usb/mixer_quirks.c
+++ b/sound/usb/mixer_quirks.c
@@ -346,6 +346,141 @@
return 0;
}
+/* Native Instruments device quirks */
+
+#define _MAKE_NI_CONTROL(bRequest,wIndex) ((bRequest) << 16 | (wIndex))
+
+static int snd_nativeinstruments_control_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
+ struct usb_device *dev = mixer->chip->dev;
+ u8 bRequest = (kcontrol->private_value >> 16) & 0xff;
+ u16 wIndex = kcontrol->private_value & 0xffff;
+ u8 tmp;
+
+ int ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), bRequest,
+ USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
+ 0, cpu_to_le16(wIndex),
+ &tmp, sizeof(tmp), 1000);
+
+ if (ret < 0) {
+ snd_printk(KERN_ERR
+ "unable to issue vendor read request (ret = %d)", ret);
+ return ret;
+ }
+
+ ucontrol->value.integer.value[0] = tmp;
+
+ return 0;
+}
+
+static int snd_nativeinstruments_control_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
+ struct usb_device *dev = mixer->chip->dev;
+ u8 bRequest = (kcontrol->private_value >> 16) & 0xff;
+ u16 wIndex = kcontrol->private_value & 0xffff;
+ u16 wValue = ucontrol->value.integer.value[0];
+
+ int ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), bRequest,
+ USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
+ cpu_to_le16(wValue), cpu_to_le16(wIndex),
+ NULL, 0, 1000);
+
+ if (ret < 0) {
+ snd_printk(KERN_ERR
+ "unable to issue vendor write request (ret = %d)", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static struct snd_kcontrol_new snd_nativeinstruments_ta6_mixers[] = {
+ {
+ .name = "Direct Thru Channel A",
+ .private_value = _MAKE_NI_CONTROL(0x01, 0x03),
+ },
+ {
+ .name = "Direct Thru Channel B",
+ .private_value = _MAKE_NI_CONTROL(0x01, 0x05),
+ },
+ {
+ .name = "Phono Input Channel A",
+ .private_value = _MAKE_NI_CONTROL(0x02, 0x03),
+ },
+ {
+ .name = "Phono Input Channel B",
+ .private_value = _MAKE_NI_CONTROL(0x02, 0x05),
+ },
+};
+
+static struct snd_kcontrol_new snd_nativeinstruments_ta10_mixers[] = {
+ {
+ .name = "Direct Thru Channel A",
+ .private_value = _MAKE_NI_CONTROL(0x01, 0x03),
+ },
+ {
+ .name = "Direct Thru Channel B",
+ .private_value = _MAKE_NI_CONTROL(0x01, 0x05),
+ },
+ {
+ .name = "Direct Thru Channel C",
+ .private_value = _MAKE_NI_CONTROL(0x01, 0x07),
+ },
+ {
+ .name = "Direct Thru Channel D",
+ .private_value = _MAKE_NI_CONTROL(0x01, 0x09),
+ },
+ {
+ .name = "Phono Input Channel A",
+ .private_value = _MAKE_NI_CONTROL(0x02, 0x03),
+ },
+ {
+ .name = "Phono Input Channel B",
+ .private_value = _MAKE_NI_CONTROL(0x02, 0x05),
+ },
+ {
+ .name = "Phono Input Channel C",
+ .private_value = _MAKE_NI_CONTROL(0x02, 0x07),
+ },
+ {
+ .name = "Phono Input Channel D",
+ .private_value = _MAKE_NI_CONTROL(0x02, 0x09),
+ },
+};
+
+static int snd_nativeinstruments_create_mixer(struct usb_mixer_interface *mixer,
+ const struct snd_kcontrol_new *kc,
+ unsigned int count)
+{
+ int i, err = 0;
+ struct snd_kcontrol_new template = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .get = snd_nativeinstruments_control_get,
+ .put = snd_nativeinstruments_control_put,
+ .info = snd_ctl_boolean_mono_info,
+ };
+
+ for (i = 0; i < count; i++) {
+ struct snd_kcontrol *c;
+
+ template.name = kc[i].name;
+ template.private_value = kc[i].private_value;
+
+ c = snd_ctl_new1(&template, mixer);
+ err = snd_ctl_add(mixer->chip->card, c);
+
+ if (err < 0)
+ break;
+ }
+
+ return err;
+}
+
void snd_emuusb_set_samplerate(struct snd_usb_audio *chip,
unsigned char samplerate_id)
{
@@ -391,6 +526,24 @@
return err;
}
+ /* Traktor Audio 6 */
+ if (mixer->chip->usb_id == USB_ID(0x17cc, 0x1011)) {
+ err = snd_nativeinstruments_create_mixer(mixer,
+ snd_nativeinstruments_ta6_mixers,
+ ARRAY_SIZE(snd_nativeinstruments_ta6_mixers));
+ if (err < 0)
+ return err;
+ }
+
+ /* Traktor Audio 10 */
+ if (mixer->chip->usb_id == USB_ID(0x17cc, 0x1021)) {
+ err = snd_nativeinstruments_create_mixer(mixer,
+ snd_nativeinstruments_ta10_mixers,
+ ARRAY_SIZE(snd_nativeinstruments_ta10_mixers));
+ if (err < 0)
+ return err;
+ }
+
return 0;
}