ALSA: scarlett2: Rename scarlett_gen2 to scarlett2

This driver was originally developed for the Focusrite Scarlett Gen 2
series. Since then Focusrite have used a similar protocol for their
Gen 3, Gen 4, Clarett USB, Clarett+, and Vocaster series.

Let's call this common protocol the "Scarlett 2 Protocol" and rename
the driver to scarlett2 to not imply that it is restricted to Gen 2
series devices.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/e1ad7f69a1e20cdb39094164504389160c1a0a0b.1698342632.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>

Author: geoffreybennett

MAINTAINERS

@@ -8126,7 +8126,7 @@ M:	Geoffrey D. Bennett <g@b4.vu>
 L:	alsa-devel@alsa-project.org (moderated for non-subscribers)
 S:	Maintained
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git
-F:	sound/usb/mixer_scarlett_gen2.c
+F:	sound/usb/mixer_scarlett2.c
 
 FORCEDETH GIGABIT ETHERNET DRIVER
 M:	Rain River <rain.1986.08.12@gmail.com>

sound/usb/Makefile

@@ -12,7 +12,7 @@ snd-usb-audio-objs := 	card.o \
 			mixer.o \
 			mixer_quirks.o \
 			mixer_scarlett.o \
-			mixer_scarlett_gen2.o \
+			mixer_scarlett2.o \
 			mixer_us16x08.o \
 			mixer_s1810c.o \
 			pcm.o \

sound/usb/mixer_quirks.c

@@ -33,7 +33,7 @@
 #include "mixer.h"
 #include "mixer_quirks.h"
 #include "mixer_scarlett.h"
-#include "mixer_scarlett_gen2.h"
+#include "mixer_scarlett2.h"
 #include "mixer_us16x08.h"
 #include "mixer_s1810c.h"
 #include "helper.h"
@@ -3426,7 +3426,7 @@ int snd_usb_mixer_apply_create_quirk(struct usb_mixer_interface *mixer)
 	case USB_ID(0x1235, 0x820a): /* Focusrite Clarett+ 2Pre */
 	case USB_ID(0x1235, 0x820b): /* Focusrite Clarett+ 4Pre */
 	case USB_ID(0x1235, 0x820c): /* Focusrite Clarett+ 8Pre */
-		err = snd_scarlett_gen2_init(mixer);
+		err = snd_scarlett2_init(mixer);
 		break;
 
 	case USB_ID(0x041e, 0x323b): /* Creative Sound Blaster E1 */

sound/usb/mixer_scarlett_gen2.c sound/usb/mixer_scarlett2.csound/usb/mixer_scarlett_gen2.c renamed to sound/usb/mixer_scarlett2.c

@@ -1,6 +1,8 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- *   Focusrite Scarlett Gen 2/3 and Clarett USB/Clarett+ Driver for ALSA
+ *   Focusrite Scarlett 2 Protocol Driver for ALSA
+ *   (including Scarlett 2nd Gen, 3rd Gen, Clarett USB, and Clarett+
+ *   series products)
  *
  *   Supported models:
  *   - 6i6/18i8/18i20 Gen 2
@@ -149,7 +151,7 @@
 #include "mixer.h"
 #include "helper.h"
 
-#include "mixer_scarlett_gen2.h"
+#include "mixer_scarlett2.h"
 
 /* device_setup value to allow turning MSD mode back on */
 #define SCARLETT2_MSD_ENABLE 0x02
@@ -4174,7 +4176,7 @@ static const struct scarlett2_device_entry *get_scarlett2_device_entry(
 	return entry;
 }
 
-static int snd_scarlett_gen2_controls_create(
+static int snd_scarlett2_controls_create(
 	struct usb_mixer_interface *mixer,
 	const struct scarlett2_device_entry *entry)
 {
@@ -4262,7 +4264,7 @@ static int snd_scarlett_gen2_controls_create(
 	return 0;
 }
 
-int snd_scarlett_gen2_init(struct usb_mixer_interface *mixer)
+int snd_scarlett2_init(struct usb_mixer_interface *mixer)
 {
 	struct snd_usb_audio *chip = mixer->chip;
 	const struct scarlett2_device_entry *entry;
@@ -4301,7 +4303,7 @@ int snd_scarlett_gen2_init(struct usb_mixer_interface *mixer)
 		entry->series_name,
 		USB_ID_PRODUCT(chip->usb_id));
 
-	err = snd_scarlett_gen2_controls_create(mixer, entry);
+	err = snd_scarlett2_controls_create(mixer, entry);
 	if (err < 0)
 		usb_audio_err(mixer->chip,
 			      "Error initialising %s Mixer Driver: %d",

sound/usb/mixer_scarlett2.h

@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __USB_MIXER_SCARLETT2_H
+#define __USB_MIXER_SCARLETT2_H
+
+int snd_scarlett2_init(struct usb_mixer_interface *mixer);
+
+#endif /* __USB_MIXER_SCARLETT2_H */