Commit 9e4d5c1b authored by Geoffrey D. Bennett's avatar Geoffrey D. Bennett Committed by Takashi Iwai
Browse files

ALSA: usb-audio: Scarlett Gen 2 mixer interface 



Add mixer quirk for the Focusrite Scarlett 6i6, 18i8, and 18i20 Gen 2
audio interfaces. Although the interfaces are USB compliant,
additional input/output level controls and hardware routing/mixing
functionality are available using proprietary USB requests.

Signed-off-by: default avatarGeoffrey D. Bennett <g@b4.vu>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 2127c01b

sound/usb/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ snd-usb-audio-objs := card.o \ 
			mixer.o \

			mixer_quirks.o \

			mixer_scarlett.o \

			mixer_scarlett_gen2.o \

			mixer_us16x08.o \

			pcm.o \

			power.o \

sound/usb/mixer.c

+4 −0
Original line number Diff line number Diff line
@@ -3509,6 +3509,8 @@ void snd_usb_mixer_disconnect(struct usb_mixer_interface *mixer) 
		usb_kill_urb(mixer->urb);

	if (mixer->rc_urb)

		usb_kill_urb(mixer->rc_urb);

	if (mixer->private_free)

		mixer->private_free(mixer);

	mixer->disconnected = true;

}
@@ -3536,6 +3538,8 @@ static int snd_usb_mixer_activate(struct usb_mixer_interface *mixer) 
int snd_usb_mixer_suspend(struct usb_mixer_interface *mixer)

{

	snd_usb_mixer_inactivate(mixer);

	if (mixer->private_suspend)

		mixer->private_suspend(mixer);

	return 0;

}

sound/usb/mixer.h

+4 −0
Original line number Diff line number Diff line
@@ -28,6 +28,10 @@ struct usb_mixer_interface { 
	struct media_mixer_ctl *media_mixer_ctl;



	bool disconnected;



	void *private_data;

	void (*private_free)(struct usb_mixer_interface *mixer);

	void (*private_suspend)(struct usb_mixer_interface *mixer);

};



#define MAX_CHANNELS	16	/* max logical channels */

sound/usb/mixer_quirks.c

+7 −0
Original line number Diff line number Diff line
@@ -32,6 +32,7 @@ 
#include "mixer.h"

#include "mixer_quirks.h"

#include "mixer_scarlett.h"

#include "mixer_scarlett_gen2.h"

#include "mixer_us16x08.h"

#include "helper.h"
@@ -2258,6 +2259,12 @@ int snd_usb_mixer_apply_create_quirk(struct usb_mixer_interface *mixer) 
		err = snd_scarlett_controls_create(mixer);

		break;



	case USB_ID(0x1235, 0x8203): /* Focusrite Scarlett 6i6 2nd Gen */

	case USB_ID(0x1235, 0x8204): /* Focusrite Scarlett 18i8 2nd Gen */

	case USB_ID(0x1235, 0x8201): /* Focusrite Scarlett 18i20 2nd Gen */

		err = snd_scarlett_gen2_controls_create(mixer);

		break;



	case USB_ID(0x041e, 0x323b): /* Creative Sound Blaster E1 */

		err = snd_soundblaster_e1_switch_create(mixer);

		break;

sound/usb/mixer_scarlett_gen2.c

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