ALSA: snd-usb-caiaq: LED support for Maschine Controller

This patch adds LED support for the Native Instruments Maschine
Controller. It adds ALSA controls for dimming the LEDs of all
buttons and the backlight of the two displays.

Signed-off-by: Hannes Gräuler <hgraeule@uos.de>
Acked-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 92 insertions, 0 deletions

diff --git a/sound/usb/caiaq/control.c b/sound/usb/caiaq/control.c
index ae6b50f9ed56..f65fc0987cfb 100644
--- a/sound/usb/caiaq/control.c
+++ b/sound/usb/caiaq/control.c
@@ -28,6 +28,7 @@
 #include "control.h"
 
 #define CNT_INTVAL 0x10000
+#define MASCHINE_BANK_SIZE 32
 
 static int control_info(struct snd_kcontrol *kcontrol,
 			struct snd_ctl_elem_info *uinfo)
@@ -105,6 +106,10 @@ static int control_put(struct snd_kcontrol *kcontrol,
 		USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1))
 		cmd = EP1_CMD_DIMM_LEDS;
 
+	if (cdev->chip.usb_id ==
+		USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_MASCHINECONTROLLER))
+		cmd = EP1_CMD_DIMM_LEDS;
+
 	if (pos & CNT_INTVAL) {
 		int i = pos & ~CNT_INTVAL;
 
@@ -121,6 +126,20 @@ static int control_put(struct snd_kcontrol *kcontrol,
 				     usb_sndbulkpipe(cdev->chip.dev, 8),
 				     cdev->ep8_out_buf, sizeof(cdev->ep8_out_buf),
 				     &actual_len, 200);
+		} else if (cdev->chip.usb_id ==
+			USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_MASCHINECONTROLLER)) {
+
+			int bank = 0;
+			int offset = 0;
+
+			if (i >= MASCHINE_BANK_SIZE) {
+				bank = 0x1e;
+				offset = MASCHINE_BANK_SIZE;
+			}
+
+			snd_usb_caiaq_send_command_bank(cdev, cmd, bank,
+					cdev->control_state + offset,
+					MASCHINE_BANK_SIZE);
 		} else {
 			snd_usb_caiaq_send_command(cdev, cmd,
 					cdev->control_state, sizeof(cdev->control_state));
@@ -490,6 +509,74 @@ static struct caiaq_controller kontrols4_controller[] = {
 	{ "LED: FX2: Mode",			133 | CNT_INTVAL },
 };
 
+static struct caiaq_controller maschine_controller[] = {
+	{ "LED: Pad 1",				3  | CNT_INTVAL },
+	{ "LED: Pad 2",				2  | CNT_INTVAL },
+	{ "LED: Pad 3",				1  | CNT_INTVAL },
+	{ "LED: Pad 4",				0  | CNT_INTVAL },
+	{ "LED: Pad 5",				7  | CNT_INTVAL },
+	{ "LED: Pad 6",				6  | CNT_INTVAL },
+	{ "LED: Pad 7",				5  | CNT_INTVAL },
+	{ "LED: Pad 8",				4  | CNT_INTVAL },
+	{ "LED: Pad 9",				11 | CNT_INTVAL },
+	{ "LED: Pad 10",			10 | CNT_INTVAL },
+	{ "LED: Pad 11",			9  | CNT_INTVAL },
+	{ "LED: Pad 12",			8  | CNT_INTVAL },
+	{ "LED: Pad 13",			15 | CNT_INTVAL },
+	{ "LED: Pad 14",			14 | CNT_INTVAL },
+	{ "LED: Pad 15",			13 | CNT_INTVAL },
+	{ "LED: Pad 16",			12 | CNT_INTVAL },
+
+	{ "LED: Mute",				16 | CNT_INTVAL },
+	{ "LED: Solo",				17 | CNT_INTVAL },
+	{ "LED: Select",			18 | CNT_INTVAL },
+	{ "LED: Duplicate",			19 | CNT_INTVAL },
+	{ "LED: Navigate",			20 | CNT_INTVAL },
+	{ "LED: Pad Mode",			21 | CNT_INTVAL },
+	{ "LED: Pattern",			22 | CNT_INTVAL },
+	{ "LED: Scene",				23 | CNT_INTVAL },
+
+	{ "LED: Shift",				24 | CNT_INTVAL },
+	{ "LED: Erase",				25 | CNT_INTVAL },
+	{ "LED: Grid",				26 | CNT_INTVAL },
+	{ "LED: Right Bottom",			27 | CNT_INTVAL },
+	{ "LED: Rec",				28 | CNT_INTVAL },
+	{ "LED: Play",				29 | CNT_INTVAL },
+	{ "LED: Left Bottom",			32 | CNT_INTVAL },
+	{ "LED: Restart",			33 | CNT_INTVAL },
+
+	{ "LED: Group A",			41 | CNT_INTVAL },
+	{ "LED: Group B",			40 | CNT_INTVAL },
+	{ "LED: Group C",			37 | CNT_INTVAL },
+	{ "LED: Group D",			36 | CNT_INTVAL },
+	{ "LED: Group E",			39 | CNT_INTVAL },
+	{ "LED: Group F",			38 | CNT_INTVAL },
+	{ "LED: Group G",			35 | CNT_INTVAL },
+	{ "LED: Group H",			34 | CNT_INTVAL },
+
+	{ "LED: Auto Write",			42 | CNT_INTVAL },
+	{ "LED: Snap",				43 | CNT_INTVAL },
+	{ "LED: Right Top",			44 | CNT_INTVAL },
+	{ "LED: Left Top",			45 | CNT_INTVAL },
+	{ "LED: Sampling",			46 | CNT_INTVAL },
+	{ "LED: Browse",			47 | CNT_INTVAL },
+	{ "LED: Step",				48 | CNT_INTVAL },
+	{ "LED: Control",			49 | CNT_INTVAL },
+
+	{ "LED: Top Button 1",			57 | CNT_INTVAL },
+	{ "LED: Top Button 2",			56 | CNT_INTVAL },
+	{ "LED: Top Button 3",			55 | CNT_INTVAL },
+	{ "LED: Top Button 4",			54 | CNT_INTVAL },
+	{ "LED: Top Button 5",			53 | CNT_INTVAL },
+	{ "LED: Top Button 6",			52 | CNT_INTVAL },
+	{ "LED: Top Button 7",			51 | CNT_INTVAL },
+	{ "LED: Top Button 8",			50 | CNT_INTVAL },
+
+	{ "LED: Note Repeat",			58 | CNT_INTVAL },
+
+	{ "Backlight Display",			59 | CNT_INTVAL }
+};
+
 static int add_controls(struct caiaq_controller *c, int num,
 			struct snd_usb_caiaqdev *cdev)
 {
@@ -553,6 +640,11 @@ int snd_usb_caiaq_control_init(struct snd_usb_caiaqdev *cdev)
 		ret = add_controls(kontrols4_controller,
 			ARRAY_SIZE(kontrols4_controller), cdev);
 		break;
+
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_MASCHINECONTROLLER):
+		ret = add_controls(maschine_controller,
+			ARRAY_SIZE(maschine_controller), cdev);
+		break;
 	}
 
 	return ret;