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ALSA: snd-usb-caiaq: LED support for Maschine Controller
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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>
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Hannes Gräuler authored and Takashi Iwai committed Sep 30, 2013
1 parent e84841f commit d2724de
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Showing 3 changed files with 122 additions and 0 deletions.
92 changes: 92 additions & 0 deletions sound/usb/caiaq/control.c
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Original file line number Diff line number Diff line change
Expand Up @@ -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)
Expand Down Expand Up @@ -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;

Expand All @@ -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));
Expand Down Expand Up @@ -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)
{
Expand Down Expand Up @@ -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;
Expand Down
25 changes: 25 additions & 0 deletions sound/usb/caiaq/device.c
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Original file line number Diff line number Diff line change
Expand Up @@ -235,6 +235,31 @@ int snd_usb_caiaq_send_command(struct snd_usb_caiaqdev *cdev,
cdev->ep1_out_buf, len+1, &actual_len, 200);
}

int snd_usb_caiaq_send_command_bank(struct snd_usb_caiaqdev *cdev,
unsigned char command,
unsigned char bank,
const unsigned char *buffer,
int len)
{
int actual_len;
struct usb_device *usb_dev = cdev->chip.dev;

if (!usb_dev)
return -EIO;

if (len > EP1_BUFSIZE - 2)
len = EP1_BUFSIZE - 2;

if (buffer && len > 0)
memcpy(cdev->ep1_out_buf+2, buffer, len);

cdev->ep1_out_buf[0] = command;
cdev->ep1_out_buf[1] = bank;

return usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, 1),
cdev->ep1_out_buf, len+2, &actual_len, 200);
}

int snd_usb_caiaq_set_audio_params (struct snd_usb_caiaqdev *cdev,
int rate, int depth, int bpp)
{
Expand Down
5 changes: 5 additions & 0 deletions sound/usb/caiaq/device.h
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Original file line number Diff line number Diff line change
Expand Up @@ -128,5 +128,10 @@ int snd_usb_caiaq_send_command(struct snd_usb_caiaqdev *cdev,
unsigned char command,
const unsigned char *buffer,
int len);
int snd_usb_caiaq_send_command_bank(struct snd_usb_caiaqdev *cdev,
unsigned char command,
unsigned char bank,
const unsigned char *buffer,
int len);

#endif /* CAIAQ_DEVICE_H */

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