sound/usb/caiaq/caiaq-input.c - kernel/msm-4.19 - Gitiles

 /*
  *   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/pcm.h>
 #include "caiaq-device.h"
 #include "caiaq-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 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;
 	}
 }

 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,
 				    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)));

 	if (dev->chip.usb_id ==
 		USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER) ||
 	    dev->chip.usb_id ==
 		USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2))
 		input_report_abs(dev->input_dev, ABS_MISC, 255 - buf[4]);

 	input_sync(input_dev);
 }

 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;

 	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;

         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;
 	default:
 		/* no input methods supported on this device */
 		input_free_device(input);
 		return 0;
 	}

 	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) {
 		input_free_device(input);
 		return ret;
 	}

 	dev->input_dev = input;
 	return 0;
 }

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

 	input_unregister_device(dev->input_dev);
 	dev->input_dev = NULL;
 }
	/*
	* 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/pcm.h>
	#include "caiaq-device.h"
	#include "caiaq-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 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;
	}
	}

	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,
	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)));

	if (dev->chip.usb_id ==
	USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER) \|\|
	dev->chip.usb_id ==
	USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2))
	input_report_abs(dev->input_dev, ABS_MISC, 255 - buf[4]);

	input_sync(input_dev);
	}

	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;

	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;

	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;
	default:
	/* no input methods supported on this device */
	input_free_device(input);
	return 0;
	}

	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) {
	input_free_device(input);
	return ret;
	}

	dev->input_dev = input;
	return 0;
	}

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

	input_unregister_device(dev->input_dev);
	dev->input_dev = NULL;
	}