[GitHub/mt8127/android_kernel_alcatel_ttab.git] / sound / usb / caiaq / input.c

/*
 *   Copyright (c) 2006,2007 Daniel Mack, Tim Ruetz
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
*/

#include <linux/init.h>
#include <linux/usb.h>
#include <linux/usb/input.h>
#include <sound/core.h>
#include <sound/pcm.h>

#include "device.h"
#include "input.h"

static unsigned short keycode_ak1[] =  { KEY_C, KEY_B, KEY_A };
static unsigned short keycode_rk2[] =  { KEY_1, KEY_2, KEY_3, KEY_4,
					 KEY_5, KEY_6, KEY_7 };
static unsigned short keycode_rk3[] =  { KEY_1, KEY_2, KEY_3, KEY_4,
					 KEY_5, KEY_6, KEY_7, KEY_5, KEY_6 };

static unsigned short keycode_kore[] = {
	KEY_FN_F1,      /* "menu"               */
	KEY_FN_F7,      /* "lcd backlight       */
	KEY_FN_F2,      /* "control"            */
	KEY_FN_F3,      /* "enter"              */
	KEY_FN_F4,      /* "view"               */
	KEY_FN_F5,      /* "esc"                */
	KEY_FN_F6,      /* "sound"              */
	KEY_FN_F8,      /* array spacer, never triggered. */
	KEY_RIGHT,
	KEY_DOWN,
	KEY_UP,
	KEY_LEFT,
	KEY_SOUND,      /* "listen"             */
	KEY_RECORD,
	KEY_PLAYPAUSE,
	KEY_STOP,
	BTN_4,          /* 8 softkeys */
	BTN_3,
	BTN_2,
	BTN_1,
	BTN_8,
	BTN_7,
	BTN_6,
	BTN_5,
	KEY_BRL_DOT4,   /* touch sensitive knobs */
	KEY_BRL_DOT3,
	KEY_BRL_DOT2,
	KEY_BRL_DOT1,
	KEY_BRL_DOT8,
	KEY_BRL_DOT7,
	KEY_BRL_DOT6,
	KEY_BRL_DOT5
};

#define KONTROLX1_INPUTS 40

#define DEG90		(range / 2)
#define DEG180		(range)
#define DEG270		(DEG90 + DEG180)
#define DEG360		(DEG180 * 2)
#define HIGH_PEAK	(268)
#define LOW_PEAK	(-7)

/* some of these devices have endless rotation potentiometers
 * built in which use two tapers, 90 degrees phase shifted.
 * this algorithm decodes them to one single value, ranging
 * from 0 to 999 */
static unsigned int decode_erp(unsigned char a, unsigned char b)
{
	int weight_a, weight_b;
	int pos_a, pos_b;
	int ret;
	int range = HIGH_PEAK - LOW_PEAK;
	int mid_value = (HIGH_PEAK + LOW_PEAK) / 2;

	weight_b = abs(mid_value - a) - (range / 2 - 100) / 2;

	if (weight_b < 0)
		weight_b = 0;

	if (weight_b > 100)
		weight_b = 100;

	weight_a = 100 - weight_b;

	if (a < mid_value) {
		/* 0..90 and 270..360 degrees */
		pos_b = b - LOW_PEAK + DEG270;
		if (pos_b >= DEG360)
			pos_b -= DEG360;
	} else
		/* 90..270 degrees */
		pos_b = HIGH_PEAK - b + DEG90;


	if (b > mid_value)
		/* 0..180 degrees */
		pos_a = a - LOW_PEAK;
	else
		/* 180..360 degrees */
		pos_a = HIGH_PEAK - a + DEG180;

	/* interpolate both slider values, depending on weight factors */
	/* 0..99 x DEG360 */
	ret = pos_a * weight_a + pos_b * weight_b;

	/* normalize to 0..999 */
	ret *= 10;
	ret /= DEG360;

	if (ret < 0)
		ret += 1000;

	if (ret >= 1000)
		ret -= 1000;

	return ret;
}

#undef DEG90
#undef DEG180
#undef DEG270
#undef DEG360
#undef HIGH_PEAK
#undef LOW_PEAK


static void snd_caiaq_input_read_analog(struct snd_usb_caiaqdev *dev,
					const unsigned char *buf,
					unsigned int len)
{
	struct input_dev *input_dev = dev->input_dev;

	switch (dev->chip.usb_id) {
	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL2):
		input_report_abs(input_dev, ABS_X, (buf[4] << 8) | buf[5]);
		input_report_abs(input_dev, ABS_Y, (buf[0] << 8) | buf[1]);
		input_report_abs(input_dev, ABS_Z, (buf[2] << 8) | buf[3]);
		input_sync(input_dev);
		break;
	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3):
		input_report_abs(input_dev, ABS_X, (buf[0] << 8) | buf[1]);
		input_report_abs(input_dev, ABS_Y, (buf[2] << 8) | buf[3]);
		input_report_abs(input_dev, ABS_Z, (buf[4] << 8) | buf[5]);
		input_sync(input_dev);
		break;
	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER):
	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2):
		input_report_abs(input_dev, ABS_X, (buf[0] << 8) | buf[1]);
		input_report_abs(input_dev, ABS_Y, (buf[2] << 8) | buf[3]);
		input_report_abs(input_dev, ABS_Z, (buf[4] << 8) | buf[5]);
		input_sync(input_dev);
		break;
	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
		input_report_abs(input_dev, ABS_HAT0X, (buf[8] << 8)  | buf[9]);
		input_report_abs(input_dev, ABS_HAT0Y, (buf[4] << 8)  | buf[5]);
		input_report_abs(input_dev, ABS_HAT1X, (buf[12] << 8) | buf[13]);
		input_report_abs(input_dev, ABS_HAT1Y, (buf[2] << 8)  | buf[3]);
		input_report_abs(input_dev, ABS_HAT2X, (buf[15] << 8) | buf[15]);
		input_report_abs(input_dev, ABS_HAT2Y, (buf[0] << 8)  | buf[1]);
		input_report_abs(input_dev, ABS_HAT3X, (buf[10] << 8) | buf[11]);
		input_report_abs(input_dev, ABS_HAT3Y, (buf[6] << 8)  | buf[7]);
		input_sync(input_dev);
		break;
	}
}

static void snd_caiaq_input_read_erp(struct snd_usb_caiaqdev *dev,
				     const char *buf, unsigned int len)
{
	struct input_dev *input_dev = dev->input_dev;
	int i;

	switch (dev->chip.usb_id) {
	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
		i = decode_erp(buf[0], buf[1]);
		input_report_abs(input_dev, ABS_X, i);
		input_sync(input_dev);
		break;
	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER):
	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2):
		i = decode_erp(buf[7], buf[5]);
		input_report_abs(input_dev, ABS_HAT0X, i);
		i = decode_erp(buf[12], buf[14]);
		input_report_abs(input_dev, ABS_HAT0Y, i);
		i = decode_erp(buf[15], buf[13]);
		input_report_abs(input_dev, ABS_HAT1X, i);
		i = decode_erp(buf[0], buf[2]);
		input_report_abs(input_dev, ABS_HAT1Y, i);
		i = decode_erp(buf[3], buf[1]);
		input_report_abs(input_dev, ABS_HAT2X, i);
		i = decode_erp(buf[8], buf[10]);
		input_report_abs(input_dev, ABS_HAT2Y, i);
		i = decode_erp(buf[11], buf[9]);
		input_report_abs(input_dev, ABS_HAT3X, i);
		i = decode_erp(buf[4], buf[6]);
		input_report_abs(input_dev, ABS_HAT3Y, i);
		input_sync(input_dev);
		break;
	}
}

static void snd_caiaq_input_read_io(struct snd_usb_caiaqdev *dev,
				    unsigned char *buf, unsigned int len)
{
	struct input_dev *input_dev = dev->input_dev;
	unsigned short *keycode = input_dev->keycode;
	int i;

	if (!keycode)
		return;

	if (input_dev->id.product == USB_PID_RIGKONTROL2)
		for (i = 0; i < len; i++)
			buf[i] = ~buf[i];

	for (i = 0; i < input_dev->keycodemax && i < len * 8; i++)
		input_report_key(input_dev, keycode[i],
				 buf[i / 8] & (1 << (i % 8)));

	switch (dev->chip.usb_id) {
	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER):
	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2):
		input_report_abs(dev->input_dev, ABS_MISC, 255 - buf[4]);
		break;
	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
		/* rotary encoders */
		input_report_abs(dev->input_dev, ABS_X, buf[5] & 0xf);
		input_report_abs(dev->input_dev, ABS_Y, buf[5] >> 4);
		input_report_abs(dev->input_dev, ABS_Z, buf[6] & 0xf);
		input_report_abs(dev->input_dev, ABS_MISC, buf[6] >> 4);
		break;
	}

	input_sync(input_dev);
}

static void snd_usb_caiaq_ep4_reply_dispatch(struct urb *urb)
{
	struct snd_usb_caiaqdev *dev = urb->context;
	unsigned char *buf = urb->transfer_buffer;
	int ret;

	if (urb->status || !dev || urb != dev->ep4_in_urb)
		return;

	if (urb->actual_length < 24)
		goto requeue;

	switch (dev->chip.usb_id) {
	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
		if (buf[0] & 0x3)
			snd_caiaq_input_read_io(dev, buf + 1, 7);

		if (buf[0] & 0x4)
			snd_caiaq_input_read_analog(dev, buf + 8, 16);

		break;
	}

requeue:
	dev->ep4_in_urb->actual_length = 0;
	ret = usb_submit_urb(dev->ep4_in_urb, GFP_ATOMIC);
	if (ret < 0)
		log("unable to submit urb. OOM!?\n");
}

static int snd_usb_caiaq_input_open(struct input_dev *idev)
{
	struct snd_usb_caiaqdev *dev = input_get_drvdata(idev);

	if (!dev)
		return -EINVAL;

	switch (dev->chip.usb_id) {
	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
		if (usb_submit_urb(dev->ep4_in_urb, GFP_KERNEL) != 0)
			return -EIO;
		break;
	}

	return 0;
}

static void snd_usb_caiaq_input_close(struct input_dev *idev)
{
	struct snd_usb_caiaqdev *dev = input_get_drvdata(idev);

	if (!dev)
		return;

	switch (dev->chip.usb_id) {
	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
		usb_kill_urb(dev->ep4_in_urb);
		break;
	}
}

void snd_usb_caiaq_input_dispatch(struct snd_usb_caiaqdev *dev,
				  char *buf,
				  unsigned int len)
{
	if (!dev->input_dev || len < 1)
		return;

	switch (buf[0]) {
	case EP1_CMD_READ_ANALOG:
		snd_caiaq_input_read_analog(dev, buf + 1, len - 1);
		break;
	case EP1_CMD_READ_ERP:
		snd_caiaq_input_read_erp(dev, buf + 1, len - 1);
		break;
	case EP1_CMD_READ_IO:
		snd_caiaq_input_read_io(dev, buf + 1, len - 1);
		break;
	}
}

int snd_usb_caiaq_input_init(struct snd_usb_caiaqdev *dev)
{
	struct usb_device *usb_dev = dev->chip.dev;
	struct input_dev *input;
	int i, ret = 0;

	input = input_allocate_device();
	if (!input)
		return -ENOMEM;

	usb_make_path(usb_dev, dev->phys, sizeof(dev->phys));
	strlcat(dev->phys, "/input0", sizeof(dev->phys));

	input->name = dev->product_name;
	input->phys = dev->phys;
	usb_to_input_id(usb_dev, &input->id);
	input->dev.parent = &usb_dev->dev;

	input_set_drvdata(input, dev);

	switch (dev->chip.usb_id) {
	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL2):
		input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
		input->absbit[0] = BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) |
			BIT_MASK(ABS_Z);
		BUILD_BUG_ON(sizeof(dev->keycode) < sizeof(keycode_rk2));
		memcpy(dev->keycode, keycode_rk2, sizeof(keycode_rk2));
		input->keycodemax = ARRAY_SIZE(keycode_rk2);
		input_set_abs_params(input, ABS_X, 0, 4096, 0, 10);
		input_set_abs_params(input, ABS_Y, 0, 4096, 0, 10);
		input_set_abs_params(input, ABS_Z, 0, 4096, 0, 10);
		snd_usb_caiaq_set_auto_msg(dev, 1, 10, 0);
		break;
	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3):
		input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
		input->absbit[0] = BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) |
			BIT_MASK(ABS_Z);
		BUILD_BUG_ON(sizeof(dev->keycode) < sizeof(keycode_rk3));
		memcpy(dev->keycode, keycode_rk3, sizeof(keycode_rk3));
		input->keycodemax = ARRAY_SIZE(keycode_rk3);
		input_set_abs_params(input, ABS_X, 0, 1024, 0, 10);
		input_set_abs_params(input, ABS_Y, 0, 1024, 0, 10);
		input_set_abs_params(input, ABS_Z, 0, 1024, 0, 10);
		snd_usb_caiaq_set_auto_msg(dev, 1, 10, 0);
		break;
	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
		input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
		input->absbit[0] = BIT_MASK(ABS_X);
		BUILD_BUG_ON(sizeof(dev->keycode) < sizeof(keycode_ak1));
		memcpy(dev->keycode, keycode_ak1, sizeof(keycode_ak1));
		input->keycodemax = ARRAY_SIZE(keycode_ak1);
		input_set_abs_params(input, ABS_X, 0, 999, 0, 10);
		snd_usb_caiaq_set_auto_msg(dev, 1, 0, 5);
		break;
	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER):
	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2):
		input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
		input->absbit[0] = BIT_MASK(ABS_HAT0X) | BIT_MASK(ABS_HAT0Y) |
				   BIT_MASK(ABS_HAT1X) | BIT_MASK(ABS_HAT1Y) |
				   BIT_MASK(ABS_HAT2X) | BIT_MASK(ABS_HAT2Y) |
				   BIT_MASK(ABS_HAT3X) | BIT_MASK(ABS_HAT3Y) |
				   BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) |
				   BIT_MASK(ABS_Z);
		input->absbit[BIT_WORD(ABS_MISC)] |= BIT_MASK(ABS_MISC);
		BUILD_BUG_ON(sizeof(dev->keycode) < sizeof(keycode_kore));
		memcpy(dev->keycode, keycode_kore, sizeof(keycode_kore));
		input->keycodemax = ARRAY_SIZE(keycode_kore);
		input_set_abs_params(input, ABS_HAT0X, 0, 999, 0, 10);
		input_set_abs_params(input, ABS_HAT0Y, 0, 999, 0, 10);
		input_set_abs_params(input, ABS_HAT1X, 0, 999, 0, 10);
		input_set_abs_params(input, ABS_HAT1Y, 0, 999, 0, 10);
		input_set_abs_params(input, ABS_HAT2X, 0, 999, 0, 10);
		input_set_abs_params(input, ABS_HAT2Y, 0, 999, 0, 10);
		input_set_abs_params(input, ABS_HAT3X, 0, 999, 0, 10);
		input_set_abs_params(input, ABS_HAT3Y, 0, 999, 0, 10);
		input_set_abs_params(input, ABS_X, 0, 4096, 0, 10);
		input_set_abs_params(input, ABS_Y, 0, 4096, 0, 10);
		input_set_abs_params(input, ABS_Z, 0, 4096, 0, 10);
		input_set_abs_params(input, ABS_MISC, 0, 255, 0, 1);
		snd_usb_caiaq_set_auto_msg(dev, 1, 10, 5);
		break;
	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
		input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
		input->absbit[0] = BIT_MASK(ABS_HAT0X) | BIT_MASK(ABS_HAT0Y) |
				   BIT_MASK(ABS_HAT1X) | BIT_MASK(ABS_HAT1Y) |
				   BIT_MASK(ABS_HAT2X) | BIT_MASK(ABS_HAT2Y) |
				   BIT_MASK(ABS_HAT3X) | BIT_MASK(ABS_HAT3Y) |
				   BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) |
				   BIT_MASK(ABS_Z);
		input->absbit[BIT_WORD(ABS_MISC)] |= BIT_MASK(ABS_MISC);
		BUILD_BUG_ON(sizeof(dev->keycode) < KONTROLX1_INPUTS);
		for (i = 0; i < KONTROLX1_INPUTS; i++)
			dev->keycode[i] = BTN_MISC + i;
		input->keycodemax = KONTROLX1_INPUTS;

		/* analog potentiometers */
		input_set_abs_params(input, ABS_HAT0X, 0, 4096, 0, 10);
		input_set_abs_params(input, ABS_HAT0Y, 0, 4096, 0, 10);
		input_set_abs_params(input, ABS_HAT1X, 0, 4096, 0, 10);
		input_set_abs_params(input, ABS_HAT1Y, 0, 4096, 0, 10);
		input_set_abs_params(input, ABS_HAT2X, 0, 4096, 0, 10);
		input_set_abs_params(input, ABS_HAT2Y, 0, 4096, 0, 10);
		input_set_abs_params(input, ABS_HAT3X, 0, 4096, 0, 10);
		input_set_abs_params(input, ABS_HAT3Y, 0, 4096, 0, 10);

		/* rotary encoders */
		input_set_abs_params(input, ABS_X, 0, 0xf, 0, 1);
		input_set_abs_params(input, ABS_Y, 0, 0xf, 0, 1);
		input_set_abs_params(input, ABS_Z, 0, 0xf, 0, 1);
		input_set_abs_params(input, ABS_MISC, 0, 0xf, 0, 1);

		dev->ep4_in_urb = usb_alloc_urb(0, GFP_KERNEL);
		if (!dev->ep4_in_urb) {
			ret = -ENOMEM;
			goto exit_free_idev;
		}

		usb_fill_bulk_urb(dev->ep4_in_urb, usb_dev,
				  usb_rcvbulkpipe(usb_dev, 0x4),
				  dev->ep4_in_buf, EP4_BUFSIZE,
				  snd_usb_caiaq_ep4_reply_dispatch, dev);

		snd_usb_caiaq_set_auto_msg(dev, 1, 10, 5);

		break;
	default:
		/* no input methods supported on this device */
		goto exit_free_idev;
	}

	input->open = snd_usb_caiaq_input_open;
	input->close = snd_usb_caiaq_input_close;
	input->keycode = dev->keycode;
	input->keycodesize = sizeof(unsigned short);
	for (i = 0; i < input->keycodemax; i++)
		__set_bit(dev->keycode[i], input->keybit);

	ret = input_register_device(input);
	if (ret < 0)
		goto exit_free_idev;

	dev->input_dev = input;
	return 0;

exit_free_idev:
	input_free_device(input);
	return ret;
}

void snd_usb_caiaq_input_free(struct snd_usb_caiaqdev *dev)
{
	if (!dev || !dev->input_dev)
		return;

	usb_kill_urb(dev->ep4_in_urb);
	usb_free_urb(dev->ep4_in_urb);
	dev->ep4_in_urb = NULL;

	input_unregister_device(dev->input_dev);
	dev->input_dev = NULL;
}
Commit	Line	Data
523f1dce DM	1	/*
	2	* Copyright (c) 2006,2007 Daniel Mack, Tim Ruetz
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License as published by
	6	* the Free Software Foundation; either version 2 of the License, or
	7	* (at your option) any later version.
	8	*
	9	* This program is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, write to the Free Software
	16	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	17	*/
	18
	19	#include <linux/init.h>
523f1dce	20	#include <linux/usb.h>
b18b493f	21	#include <linux/usb/input.h>
6da7a2aa	22	#include <sound/core.h>
523f1dce	23	#include <sound/pcm.h>
936e7d03 DM	24
	25	#include "device.h"
	26	#include "input.h"
523f1dce	27
b18b493f DT	28	static unsigned short keycode_ak1[] = { KEY_C, KEY_B, KEY_A };
	29	static unsigned short keycode_rk2[] = { KEY_1, KEY_2, KEY_3, KEY_4,
	30	KEY_5, KEY_6, KEY_7 };
	31	static unsigned short keycode_rk3[] = { KEY_1, KEY_2, KEY_3, KEY_4,
	32	KEY_5, KEY_6, KEY_7, KEY_5, KEY_6 };
523f1dce	33
8e3cd08e DM	34	static unsigned short keycode_kore[] = {
	35	KEY_FN_F1, /* "menu" */
	36	KEY_FN_F7, /* "lcd backlight */
	37	KEY_FN_F2, /* "control" */
	38	KEY_FN_F3, /* "enter" */
	39	KEY_FN_F4, /* "view" */
	40	KEY_FN_F5, /* "esc" */
	41	KEY_FN_F6, /* "sound" */
	42	KEY_FN_F8, /* array spacer, never triggered. */
	43	KEY_RIGHT,
	44	KEY_DOWN,
	45	KEY_UP,
	46	KEY_LEFT,
	47	KEY_SOUND, /* "listen" */
	48	KEY_RECORD,
	49	KEY_PLAYPAUSE,
	50	KEY_STOP,
	51	BTN_4, /* 8 softkeys */
	52	BTN_3,
	53	BTN_2,
	54	BTN_1,
	55	BTN_8,
	56	BTN_7,
	57	BTN_6,
	58	BTN_5,
	59	KEY_BRL_DOT4, /* touch sensitive knobs */
	60	KEY_BRL_DOT3,
	61	KEY_BRL_DOT2,
	62	KEY_BRL_DOT1,
	63	KEY_BRL_DOT8,
	64	KEY_BRL_DOT7,
	65	KEY_BRL_DOT6,
	66	KEY_BRL_DOT5
	67	};
	68
6da7a2aa DM	69	#define KONTROLX1_INPUTS 40
6da7a2aa DM	70
b18b493f DT	71	#define DEG90 (range / 2)
	72	#define DEG180 (range)
	73	#define DEG270 (DEG90 + DEG180)
	74	#define DEG360 (DEG180 * 2)
	75	#define HIGH_PEAK (268)
	76	#define LOW_PEAK (-7)
523f1dce DM	77
	78	/* some of these devices have endless rotation potentiometers
	79	* built in which use two tapers, 90 degrees phase shifted.
	80	* this algorithm decodes them to one single value, ranging
	81	* from 0 to 999 */
	82	static unsigned int decode_erp(unsigned char a, unsigned char b)
	83	{
	84	int weight_a, weight_b;
	85	int pos_a, pos_b;
	86	int ret;
	87	int range = HIGH_PEAK - LOW_PEAK;
	88	int mid_value = (HIGH_PEAK + LOW_PEAK) / 2;
	89
b18b493f DT	90	weight_b = abs(mid_value - a) - (range / 2 - 100) / 2;
b18b493f DT	91
523f1dce DM	92	if (weight_b < 0)
	93	weight_b = 0;
	94
	95	if (weight_b > 100)
	96	weight_b = 100;
	97
	98	weight_a = 100 - weight_b;
	99
	100	if (a < mid_value) {
	101	/* 0..90 and 270..360 degrees */
	102	pos_b = b - LOW_PEAK + DEG270;
	103	if (pos_b >= DEG360)
	104	pos_b -= DEG360;
	105	} else
	106	/* 90..270 degrees */
	107	pos_b = HIGH_PEAK - b + DEG90;
	108
	109
	110	if (b > mid_value)
	111	/* 0..180 degrees */
	112	pos_a = a - LOW_PEAK;
	113	else
	114	/* 180..360 degrees */
	115	pos_a = HIGH_PEAK - a + DEG180;
	116
	117	/* interpolate both slider values, depending on weight factors */
	118	/* 0..99 x DEG360 */
	119	ret = pos_a * weight_a + pos_b * weight_b;
	120
	121	/* normalize to 0..999 */
	122	ret *= 10;
	123	ret /= DEG360;
	124
	125	if (ret < 0)
	126	ret += 1000;
b18b493f	127
523f1dce DM	128	if (ret >= 1000)
	129	ret -= 1000;
	130
	131	return ret;
	132	}
	133
	134	#undef DEG90
	135	#undef DEG180
	136	#undef DEG270
	137	#undef DEG360
	138	#undef HIGH_PEAK
	139	#undef LOW_PEAK
	140
	141
b18b493f	142	static void snd_caiaq_input_read_analog(struct snd_usb_caiaqdev *dev,
ad1e34b5 DM	143	const unsigned char *buf,
ad1e34b5 DM	144	unsigned int len)
523f1dce	145	{
b18b493f DT	146	struct input_dev *input_dev = dev->input_dev;
b18b493f DT	147
8e3cd08e DM	148	switch (dev->chip.usb_id) {
8e3cd08e DM	149	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL2):
b18b493f DT	150	input_report_abs(input_dev, ABS_X, (buf[4] << 8) \| buf[5]);
	151	input_report_abs(input_dev, ABS_Y, (buf[0] << 8) \| buf[1]);
	152	input_report_abs(input_dev, ABS_Z, (buf[2] << 8) \| buf[3]);
	153	input_sync(input_dev);
523f1dce	154	break;
8e3cd08e DM	155	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3):
	156	input_report_abs(input_dev, ABS_X, (buf[0] << 8) \| buf[1]);
	157	input_report_abs(input_dev, ABS_Y, (buf[2] << 8) \| buf[3]);
	158	input_report_abs(input_dev, ABS_Z, (buf[4] << 8) \| buf[5]);
	159	input_sync(input_dev);
	160	break;
	161	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER):
7829d0ec	162	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2):
b18b493f DT	163	input_report_abs(input_dev, ABS_X, (buf[0] << 8) \| buf[1]);
	164	input_report_abs(input_dev, ABS_Y, (buf[2] << 8) \| buf[3]);
	165	input_report_abs(input_dev, ABS_Z, (buf[4] << 8) \| buf[5]);
	166	input_sync(input_dev);
ad1e34b5	167	break;
6da7a2aa DM	168	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
	169	input_report_abs(input_dev, ABS_HAT0X, (buf[8] << 8) \| buf[9]);
	170	input_report_abs(input_dev, ABS_HAT0Y, (buf[4] << 8) \| buf[5]);
	171	input_report_abs(input_dev, ABS_HAT1X, (buf[12] << 8) \| buf[13]);
	172	input_report_abs(input_dev, ABS_HAT1Y, (buf[2] << 8) \| buf[3]);
	173	input_report_abs(input_dev, ABS_HAT2X, (buf[15] << 8) \| buf[15]);
	174	input_report_abs(input_dev, ABS_HAT2Y, (buf[0] << 8) \| buf[1]);
	175	input_report_abs(input_dev, ABS_HAT3X, (buf[10] << 8) \| buf[11]);
	176	input_report_abs(input_dev, ABS_HAT3Y, (buf[6] << 8) \| buf[7]);
	177	input_sync(input_dev);
	178	break;
523f1dce DM	179	}
	180	}
	181
b18b493f	182	static void snd_caiaq_input_read_erp(struct snd_usb_caiaqdev *dev,
523f1dce DM	183	const char *buf, unsigned int len)
523f1dce DM	184	{
b18b493f	185	struct input_dev *input_dev = dev->input_dev;
523f1dce DM	186	int i;
523f1dce DM	187
8e3cd08e DM	188	switch (dev->chip.usb_id) {
8e3cd08e DM	189	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
523f1dce	190	i = decode_erp(buf[0], buf[1]);
b18b493f DT	191	input_report_abs(input_dev, ABS_X, i);
b18b493f DT	192	input_sync(input_dev);
523f1dce	193	break;
8e3cd08e	194	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER):
7829d0ec	195	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2):
8e3cd08e DM	196	i = decode_erp(buf[7], buf[5]);
	197	input_report_abs(input_dev, ABS_HAT0X, i);
	198	i = decode_erp(buf[12], buf[14]);
	199	input_report_abs(input_dev, ABS_HAT0Y, i);
	200	i = decode_erp(buf[15], buf[13]);
	201	input_report_abs(input_dev, ABS_HAT1X, i);
	202	i = decode_erp(buf[0], buf[2]);
	203	input_report_abs(input_dev, ABS_HAT1Y, i);
	204	i = decode_erp(buf[3], buf[1]);
	205	input_report_abs(input_dev, ABS_HAT2X, i);
	206	i = decode_erp(buf[8], buf[10]);
	207	input_report_abs(input_dev, ABS_HAT2Y, i);
	208	i = decode_erp(buf[11], buf[9]);
	209	input_report_abs(input_dev, ABS_HAT3X, i);
	210	i = decode_erp(buf[4], buf[6]);
	211	input_report_abs(input_dev, ABS_HAT3Y, i);
	212	input_sync(input_dev);
	213	break;
523f1dce DM	214	}
	215	}
	216
b18b493f	217	static void snd_caiaq_input_read_io(struct snd_usb_caiaqdev *dev,
6da7a2aa	218	unsigned char *buf, unsigned int len)
523f1dce	219	{
b18b493f DT	220	struct input_dev *input_dev = dev->input_dev;
b18b493f DT	221	unsigned short *keycode = input_dev->keycode;
523f1dce	222	int i;
523f1dce DM	223
	224	if (!keycode)
	225	return;
	226
b18b493f DT	227	if (input_dev->id.product == USB_PID_RIGKONTROL2)
b18b493f DT	228	for (i = 0; i < len; i++)
523f1dce DM	229	buf[i] = ~buf[i];
523f1dce DM	230
8e3cd08e	231	for (i = 0; i < input_dev->keycodemax && i < len * 8; i++)
b18b493f DT	232	input_report_key(input_dev, keycode[i],
b18b493f DT	233	buf[i / 8] & (1 << (i % 8)));
523f1dce	234
6da7a2aa DM	235	switch (dev->chip.usb_id) {
	236	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER):
	237	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2):
8e3cd08e	238	input_report_abs(dev->input_dev, ABS_MISC, 255 - buf[4]);
6da7a2aa DM	239	break;
	240	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
	241	/* rotary encoders */
	242	input_report_abs(dev->input_dev, ABS_X, buf[5] & 0xf);
	243	input_report_abs(dev->input_dev, ABS_Y, buf[5] >> 4);
	244	input_report_abs(dev->input_dev, ABS_Z, buf[6] & 0xf);
	245	input_report_abs(dev->input_dev, ABS_MISC, buf[6] >> 4);
	246	break;
	247	}
8e3cd08e	248
b18b493f	249	input_sync(input_dev);
523f1dce DM	250	}
523f1dce DM	251
6da7a2aa DM	252	static void snd_usb_caiaq_ep4_reply_dispatch(struct urb *urb)
	253	{
	254	struct snd_usb_caiaqdev *dev = urb->context;
	255	unsigned char *buf = urb->transfer_buffer;
	256	int ret;
	257
	258	if (urb->status \|\| !dev \|\| urb != dev->ep4_in_urb)
	259	return;
	260
	261	if (urb->actual_length < 24)
	262	goto requeue;
	263
	264	switch (dev->chip.usb_id) {
	265	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
	266	if (buf[0] & 0x3)
	267	snd_caiaq_input_read_io(dev, buf + 1, 7);
	268
	269	if (buf[0] & 0x4)
	270	snd_caiaq_input_read_analog(dev, buf + 8, 16);
	271
	272	break;
	273	}
	274
	275	requeue:
	276	dev->ep4_in_urb->actual_length = 0;
	277	ret = usb_submit_urb(dev->ep4_in_urb, GFP_ATOMIC);
	278	if (ret < 0)
	279	log("unable to submit urb. OOM!?\n");
	280	}
	281
	282	static int snd_usb_caiaq_input_open(struct input_dev *idev)
	283	{
	284	struct snd_usb_caiaqdev *dev = input_get_drvdata(idev);
	285
	286	if (!dev)
	287	return -EINVAL;
	288
	289	switch (dev->chip.usb_id) {
	290	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
	291	if (usb_submit_urb(dev->ep4_in_urb, GFP_KERNEL) != 0)
	292	return -EIO;
	293	break;
	294	}
	295
	296	return 0;
	297	}
	298
	299	static void snd_usb_caiaq_input_close(struct input_dev *idev)
	300	{
	301	struct snd_usb_caiaqdev *dev = input_get_drvdata(idev);
	302
	303	if (!dev)
	304	return;
	305
	306	switch (dev->chip.usb_id) {
	307	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
	308	usb_kill_urb(dev->ep4_in_urb);
	309	break;
	310	}
	311	}
	312
b18b493f DT	313	void snd_usb_caiaq_input_dispatch(struct snd_usb_caiaqdev *dev,
b18b493f DT	314	char *buf,
523f1dce DM	315	unsigned int len)
523f1dce DM	316	{
b18b493f	317	if (!dev->input_dev \|\| len < 1)
523f1dce DM	318	return;
	319
	320	switch (buf[0]) {
	321	case EP1_CMD_READ_ANALOG:
b18b493f	322	snd_caiaq_input_read_analog(dev, buf + 1, len - 1);
523f1dce DM	323	break;
523f1dce DM	324	case EP1_CMD_READ_ERP:
b18b493f	325	snd_caiaq_input_read_erp(dev, buf + 1, len - 1);
523f1dce DM	326	break;
523f1dce DM	327	case EP1_CMD_READ_IO:
b18b493f	328	snd_caiaq_input_read_io(dev, buf + 1, len - 1);
523f1dce DM	329	break;
	330	}
	331	}
	332
	333	int snd_usb_caiaq_input_init(struct snd_usb_caiaqdev *dev)
	334	{
	335	struct usb_device *usb_dev = dev->chip.dev;
	336	struct input_dev *input;
6da7a2aa	337	int i, ret = 0;
523f1dce DM	338
	339	input = input_allocate_device();
	340	if (!input)
	341	return -ENOMEM;
	342
b18b493f DT	343	usb_make_path(usb_dev, dev->phys, sizeof(dev->phys));
	344	strlcat(dev->phys, "/input0", sizeof(dev->phys));
	345
523f1dce	346	input->name = dev->product_name;
b18b493f DT	347	input->phys = dev->phys;
	348	usb_to_input_id(usb_dev, &input->id);
	349	input->dev.parent = &usb_dev->dev;
523f1dce	350
6da7a2aa DM	351	input_set_drvdata(input, dev);
	352
	353	switch (dev->chip.usb_id) {
523f1dce	354	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL2):
7b19ada2 JS	355	input->evbit[0] = BIT_MASK(EV_KEY) \| BIT_MASK(EV_ABS);
	356	input->absbit[0] = BIT_MASK(ABS_X) \| BIT_MASK(ABS_Y) \|
	357	BIT_MASK(ABS_Z);
b18b493f DT	358	BUILD_BUG_ON(sizeof(dev->keycode) < sizeof(keycode_rk2));
b18b493f DT	359	memcpy(dev->keycode, keycode_rk2, sizeof(keycode_rk2));
523f1dce	360	input->keycodemax = ARRAY_SIZE(keycode_rk2);
523f1dce DM	361	input_set_abs_params(input, ABS_X, 0, 4096, 0, 10);
	362	input_set_abs_params(input, ABS_Y, 0, 4096, 0, 10);
	363	input_set_abs_params(input, ABS_Z, 0, 4096, 0, 10);
	364	snd_usb_caiaq_set_auto_msg(dev, 1, 10, 0);
	365	break;
ad1e34b5	366	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3):
8e3cd08e DM	367	input->evbit[0] = BIT_MASK(EV_KEY) \| BIT_MASK(EV_ABS);
	368	input->absbit[0] = BIT_MASK(ABS_X) \| BIT_MASK(ABS_Y) \|
	369	BIT_MASK(ABS_Z);
b18b493f DT	370	BUILD_BUG_ON(sizeof(dev->keycode) < sizeof(keycode_rk3));
b18b493f DT	371	memcpy(dev->keycode, keycode_rk3, sizeof(keycode_rk3));
ad1e34b5	372	input->keycodemax = ARRAY_SIZE(keycode_rk3);
ad1e34b5 DM	373	input_set_abs_params(input, ABS_X, 0, 1024, 0, 10);
	374	input_set_abs_params(input, ABS_Y, 0, 1024, 0, 10);
	375	input_set_abs_params(input, ABS_Z, 0, 1024, 0, 10);
	376	snd_usb_caiaq_set_auto_msg(dev, 1, 10, 0);
	377	break;
523f1dce	378	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
7b19ada2 JS	379	input->evbit[0] = BIT_MASK(EV_KEY) \| BIT_MASK(EV_ABS);
7b19ada2 JS	380	input->absbit[0] = BIT_MASK(ABS_X);
b18b493f DT	381	BUILD_BUG_ON(sizeof(dev->keycode) < sizeof(keycode_ak1));
b18b493f DT	382	memcpy(dev->keycode, keycode_ak1, sizeof(keycode_ak1));
523f1dce	383	input->keycodemax = ARRAY_SIZE(keycode_ak1);
523f1dce DM	384	input_set_abs_params(input, ABS_X, 0, 999, 0, 10);
	385	snd_usb_caiaq_set_auto_msg(dev, 1, 0, 5);
	386	break;
8e3cd08e	387	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER):
7829d0ec	388	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2):
8e3cd08e DM	389	input->evbit[0] = BIT_MASK(EV_KEY) \| BIT_MASK(EV_ABS);
	390	input->absbit[0] = BIT_MASK(ABS_HAT0X) \| BIT_MASK(ABS_HAT0Y) \|
	391	BIT_MASK(ABS_HAT1X) \| BIT_MASK(ABS_HAT1Y) \|
	392	BIT_MASK(ABS_HAT2X) \| BIT_MASK(ABS_HAT2Y) \|
	393	BIT_MASK(ABS_HAT3X) \| BIT_MASK(ABS_HAT3Y) \|
	394	BIT_MASK(ABS_X) \| BIT_MASK(ABS_Y) \|
	395	BIT_MASK(ABS_Z);
	396	input->absbit[BIT_WORD(ABS_MISC)] \|= BIT_MASK(ABS_MISC);
	397	BUILD_BUG_ON(sizeof(dev->keycode) < sizeof(keycode_kore));
	398	memcpy(dev->keycode, keycode_kore, sizeof(keycode_kore));
	399	input->keycodemax = ARRAY_SIZE(keycode_kore);
	400	input_set_abs_params(input, ABS_HAT0X, 0, 999, 0, 10);
	401	input_set_abs_params(input, ABS_HAT0Y, 0, 999, 0, 10);
	402	input_set_abs_params(input, ABS_HAT1X, 0, 999, 0, 10);
	403	input_set_abs_params(input, ABS_HAT1Y, 0, 999, 0, 10);
	404	input_set_abs_params(input, ABS_HAT2X, 0, 999, 0, 10);
	405	input_set_abs_params(input, ABS_HAT2Y, 0, 999, 0, 10);
	406	input_set_abs_params(input, ABS_HAT3X, 0, 999, 0, 10);
	407	input_set_abs_params(input, ABS_HAT3Y, 0, 999, 0, 10);
	408	input_set_abs_params(input, ABS_X, 0, 4096, 0, 10);
	409	input_set_abs_params(input, ABS_Y, 0, 4096, 0, 10);
	410	input_set_abs_params(input, ABS_Z, 0, 4096, 0, 10);
	411	input_set_abs_params(input, ABS_MISC, 0, 255, 0, 1);
	412	snd_usb_caiaq_set_auto_msg(dev, 1, 10, 5);
6da7a2aa DM	413	break;
	414	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
	415	input->evbit[0] = BIT_MASK(EV_KEY) \| BIT_MASK(EV_ABS);
	416	input->absbit[0] = BIT_MASK(ABS_HAT0X) \| BIT_MASK(ABS_HAT0Y) \|
	417	BIT_MASK(ABS_HAT1X) \| BIT_MASK(ABS_HAT1Y) \|
	418	BIT_MASK(ABS_HAT2X) \| BIT_MASK(ABS_HAT2Y) \|
	419	BIT_MASK(ABS_HAT3X) \| BIT_MASK(ABS_HAT3Y) \|
	420	BIT_MASK(ABS_X) \| BIT_MASK(ABS_Y) \|
	421	BIT_MASK(ABS_Z);
	422	input->absbit[BIT_WORD(ABS_MISC)] \|= BIT_MASK(ABS_MISC);
	423	BUILD_BUG_ON(sizeof(dev->keycode) < KONTROLX1_INPUTS);
	424	for (i = 0; i < KONTROLX1_INPUTS; i++)
	425	dev->keycode[i] = BTN_MISC + i;
	426	input->keycodemax = KONTROLX1_INPUTS;
	427
	428	/* analog potentiometers */
	429	input_set_abs_params(input, ABS_HAT0X, 0, 4096, 0, 10);
	430	input_set_abs_params(input, ABS_HAT0Y, 0, 4096, 0, 10);
	431	input_set_abs_params(input, ABS_HAT1X, 0, 4096, 0, 10);
	432	input_set_abs_params(input, ABS_HAT1Y, 0, 4096, 0, 10);
	433	input_set_abs_params(input, ABS_HAT2X, 0, 4096, 0, 10);
	434	input_set_abs_params(input, ABS_HAT2Y, 0, 4096, 0, 10);
	435	input_set_abs_params(input, ABS_HAT3X, 0, 4096, 0, 10);
	436	input_set_abs_params(input, ABS_HAT3Y, 0, 4096, 0, 10);
	437
	438	/* rotary encoders */
	439	input_set_abs_params(input, ABS_X, 0, 0xf, 0, 1);
	440	input_set_abs_params(input, ABS_Y, 0, 0xf, 0, 1);
	441	input_set_abs_params(input, ABS_Z, 0, 0xf, 0, 1);
	442	input_set_abs_params(input, ABS_MISC, 0, 0xf, 0, 1);
	443
	444	dev->ep4_in_urb = usb_alloc_urb(0, GFP_KERNEL);
	445	if (!dev->ep4_in_urb) {
	446	ret = -ENOMEM;
	447	goto exit_free_idev;
	448	}
	449
	450	usb_fill_bulk_urb(dev->ep4_in_urb, usb_dev,
	451	usb_rcvbulkpipe(usb_dev, 0x4),
	452	dev->ep4_in_buf, EP4_BUFSIZE,
	453	snd_usb_caiaq_ep4_reply_dispatch, dev);
	454
	455	snd_usb_caiaq_set_auto_msg(dev, 1, 10, 5);
	456
8e3cd08e	457	break;
523f1dce DM	458	default:
523f1dce DM	459	/* no input methods supported on this device */
6da7a2aa	460	goto exit_free_idev;
523f1dce DM	461	}
523f1dce DM	462
6da7a2aa DM	463	input->open = snd_usb_caiaq_input_open;
6da7a2aa DM	464	input->close = snd_usb_caiaq_input_close;
b18b493f DT	465	input->keycode = dev->keycode;
	466	input->keycodesize = sizeof(unsigned short);
	467	for (i = 0; i < input->keycodemax; i++)
	468	__set_bit(dev->keycode[i], input->keybit);
	469
523f1dce	470	ret = input_register_device(input);
6da7a2aa DM	471	if (ret < 0)
6da7a2aa DM	472	goto exit_free_idev;
523f1dce DM	473
	474	dev->input_dev = input;
	475	return 0;
6da7a2aa DM	476
	477	exit_free_idev:
	478	input_free_device(input);
	479	return ret;
523f1dce DM	480	}
	481
	482	void snd_usb_caiaq_input_free(struct snd_usb_caiaqdev *dev)
	483	{
	484	if (!dev \|\| !dev->input_dev)
	485	return;
	486
6da7a2aa DM	487	usb_kill_urb(dev->ep4_in_urb);
	488	usb_free_urb(dev->ep4_in_urb);
	489	dev->ep4_in_urb = NULL;
	490
523f1dce	491	input_unregister_device(dev->input_dev);
523f1dce DM	492	dev->input_dev = NULL;
	493	}
	494