ALSA: scarlett2: Add Focusrite Clarett+ 2Pre and 4Pre support

The Focusrite Clarett+ series uses the same protocol as the Scarlett
Gen 2 and Gen 3 series. This patch adds support for the Clarett+ 2Pre
and Clarett+ 4Pre similarly to the existing 8Pre support by adding
appropriate entries to the scarlett2 driver.

The Clarett 2Pre USB and 4Pre USB presumably use the same protocol as
well, so support for them can easily be added if someone can test.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/ZRL7qjC3tYQllT3H@m.b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>

2 files changed, 98 insertions, 1 deletions

diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
index 9911859d2750..0db94ead1b93 100644
--- a/sound/usb/mixer_quirks.c
+++ b/sound/usb/mixer_quirks.c
@@ -3421,6 +3421,8 @@ int snd_usb_mixer_apply_create_quirk(struct usb_mixer_interface *mixer)
 	case USB_ID(0x1235, 0x8214): /* Focusrite Scarlett 18i8 3rd Gen */
 	case USB_ID(0x1235, 0x8215): /* Focusrite Scarlett 18i20 3rd Gen */
 	case USB_ID(0x1235, 0x8208): /* Focusrite Clarett 8Pre USB */
+	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);
 		break;
diff --git a/sound/usb/mixer_scarlett_gen2.c b/sound/usb/mixer_scarlett_gen2.c
index e0242b38b3f7..a2d97fa97f81 100644
--- a/sound/usb/mixer_scarlett_gen2.c
+++ b/sound/usb/mixer_scarlett_gen2.c
@@ -6,7 +6,7 @@
  *   - 6i6/18i8/18i20 Gen 2
  *   - Solo/2i2/4i4/8i6/18i8/18i20 Gen 3
  *   - Clarett 8Pre USB
- *   - Clarett+ 8Pre
+ *   - Clarett+ 2Pre/4Pre/8Pre
  *
  *   Copyright (c) 2018-2023 by Geoffrey D. Bennett <g at b4.vu>
  *   Copyright (c) 2020-2021 by Vladimir Sadovnikov <sadko4u@gmail.com>
@@ -60,6 +60,10 @@
  * Support for Clarett 8Pre USB added in Sep 2023 (thanks to Philippe
  * Perrot for confirmation).
  *
+ * Support for Clarett+ 4Pre and 2Pre added in Sep 2023 (thanks to
+ * Gregory Rozzo for donating a 4Pre, and David Sherwood and Patrice
+ * Peterson for usbmon output).
+ *
  * This ALSA mixer gives access to (model-dependent):
  *  - input, output, mixer-matrix muxes
  *  - mixer-matrix gain stages
@@ -832,6 +836,95 @@ static const struct scarlett2_device_info s18i20_gen3_info = {
 	} },
 };
 
+static const struct scarlett2_device_info clarett_2pre_info = {
+	.config_set = SCARLETT2_CONFIG_SET_CLARETT,
+	.line_out_hw_vol = 1,
+	.level_input_count = 2,
+	.air_input_count = 2,
+
+	.line_out_descrs = {
+		"Monitor L",
+		"Monitor R",
+		"Headphones L",
+		"Headphones R",
+	},
+
+	.port_count = {
+		[SCARLETT2_PORT_TYPE_NONE]     = {  1,  0 },
+		[SCARLETT2_PORT_TYPE_ANALOGUE] = {  2,  4 },
+		[SCARLETT2_PORT_TYPE_SPDIF]    = {  2,  0 },
+		[SCARLETT2_PORT_TYPE_ADAT]     = {  8,  0 },
+		[SCARLETT2_PORT_TYPE_MIX]      = { 10, 18 },
+		[SCARLETT2_PORT_TYPE_PCM]      = {  4, 12 },
+	},
+
+	.mux_assignment = { {
+		{ SCARLETT2_PORT_TYPE_PCM,      0, 12 },
+		{ SCARLETT2_PORT_TYPE_ANALOGUE, 0,  4 },
+		{ SCARLETT2_PORT_TYPE_MIX,      0, 18 },
+		{ SCARLETT2_PORT_TYPE_NONE,     0,  8 },
+		{ 0,                            0,  0 },
+	}, {
+		{ SCARLETT2_PORT_TYPE_PCM,      0,  8 },
+		{ SCARLETT2_PORT_TYPE_ANALOGUE, 0,  4 },
+		{ SCARLETT2_PORT_TYPE_MIX,      0, 18 },
+		{ SCARLETT2_PORT_TYPE_NONE,     0,  8 },
+		{ 0,                            0,  0 },
+	}, {
+		{ SCARLETT2_PORT_TYPE_PCM,      0,  2 },
+		{ SCARLETT2_PORT_TYPE_ANALOGUE, 0,  4 },
+		{ SCARLETT2_PORT_TYPE_NONE,     0, 26 },
+		{ 0,                            0,  0 },
+	} },
+};
+
+static const struct scarlett2_device_info clarett_4pre_info = {
+	.config_set = SCARLETT2_CONFIG_SET_CLARETT,
+	.line_out_hw_vol = 1,
+	.level_input_count = 2,
+	.air_input_count = 4,
+
+	.line_out_descrs = {
+		"Monitor L",
+		"Monitor R",
+		"Headphones 1 L",
+		"Headphones 1 R",
+		"Headphones 2 L",
+		"Headphones 2 R",
+	},
+
+	.port_count = {
+		[SCARLETT2_PORT_TYPE_NONE]     = {  1,  0 },
+		[SCARLETT2_PORT_TYPE_ANALOGUE] = {  8,  6 },
+		[SCARLETT2_PORT_TYPE_SPDIF]    = {  2,  2 },
+		[SCARLETT2_PORT_TYPE_ADAT]     = {  8,  0 },
+		[SCARLETT2_PORT_TYPE_MIX]      = { 10, 18 },
+		[SCARLETT2_PORT_TYPE_PCM]      = {  8, 18 },
+	},
+
+	.mux_assignment = { {
+		{ SCARLETT2_PORT_TYPE_PCM,      0, 18 },
+		{ SCARLETT2_PORT_TYPE_ANALOGUE, 0,  6 },
+		{ SCARLETT2_PORT_TYPE_SPDIF,    0,  2 },
+		{ SCARLETT2_PORT_TYPE_MIX,      0, 18 },
+		{ SCARLETT2_PORT_TYPE_NONE,     0,  8 },
+		{ 0,                            0,  0 },
+	}, {
+		{ SCARLETT2_PORT_TYPE_PCM,      0, 14 },
+		{ SCARLETT2_PORT_TYPE_ANALOGUE, 0,  6 },
+		{ SCARLETT2_PORT_TYPE_SPDIF,    0,  2 },
+		{ SCARLETT2_PORT_TYPE_MIX,      0, 18 },
+		{ SCARLETT2_PORT_TYPE_NONE,     0,  8 },
+		{ 0,                            0,  0 },
+	}, {
+		{ SCARLETT2_PORT_TYPE_PCM,      0, 12 },
+		{ SCARLETT2_PORT_TYPE_ANALOGUE, 0,  6 },
+		{ SCARLETT2_PORT_TYPE_SPDIF,    0,  2 },
+		{ SCARLETT2_PORT_TYPE_NONE,     0, 24 },
+		{ 0,                            0,  0 },
+	} },
+};
+
 static const struct scarlett2_device_info clarett_8pre_info = {
 	.config_set = SCARLETT2_CONFIG_SET_CLARETT,
 	.line_out_hw_vol = 1,
@@ -907,6 +1000,8 @@ static const struct scarlett2_device_entry scarlett2_devices[] = {
 
 	/* Supported Clarett USB/Clarett+ devices */
 	{ USB_ID(0x1235, 0x8208), &clarett_8pre_info, "Clarett USB" },
+	{ USB_ID(0x1235, 0x820a), &clarett_2pre_info, "Clarett+" },
+	{ USB_ID(0x1235, 0x820b), &clarett_4pre_info, "Clarett+" },
 	{ USB_ID(0x1235, 0x820c), &clarett_8pre_info, "Clarett+" },
 
 	/* End of list */