xref: /linux/sound/usb/caiaq/input.c (revision 9a379e77033f02c4a071891afdf0f0a01eff8ccb)
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/device.h>
20 #include <linux/gfp.h>
21 #include <linux/init.h>
22 #include <linux/usb.h>
23 #include <linux/usb/input.h>
24 #include <sound/core.h>
25 #include <sound/pcm.h>
26 
27 #include "device.h"
28 #include "input.h"
29 
30 static unsigned short keycode_ak1[] =  { KEY_C, KEY_B, KEY_A };
31 static unsigned short keycode_rk2[] =  { KEY_1, KEY_2, KEY_3, KEY_4,
32 					 KEY_5, KEY_6, KEY_7 };
33 static unsigned short keycode_rk3[] =  { KEY_1, KEY_2, KEY_3, KEY_4,
34 					 KEY_5, KEY_6, KEY_7, KEY_8, KEY_9 };
35 
36 static unsigned short keycode_kore[] = {
37 	KEY_FN_F1,      /* "menu"               */
38 	KEY_FN_F7,      /* "lcd backlight       */
39 	KEY_FN_F2,      /* "control"            */
40 	KEY_FN_F3,      /* "enter"              */
41 	KEY_FN_F4,      /* "view"               */
42 	KEY_FN_F5,      /* "esc"                */
43 	KEY_FN_F6,      /* "sound"              */
44 	KEY_FN_F8,      /* array spacer, never triggered. */
45 	KEY_RIGHT,
46 	KEY_DOWN,
47 	KEY_UP,
48 	KEY_LEFT,
49 	KEY_SOUND,      /* "listen"             */
50 	KEY_RECORD,
51 	KEY_PLAYPAUSE,
52 	KEY_STOP,
53 	BTN_4,          /* 8 softkeys */
54 	BTN_3,
55 	BTN_2,
56 	BTN_1,
57 	BTN_8,
58 	BTN_7,
59 	BTN_6,
60 	BTN_5,
61 	KEY_BRL_DOT4,   /* touch sensitive knobs */
62 	KEY_BRL_DOT3,
63 	KEY_BRL_DOT2,
64 	KEY_BRL_DOT1,
65 	KEY_BRL_DOT8,
66 	KEY_BRL_DOT7,
67 	KEY_BRL_DOT6,
68 	KEY_BRL_DOT5
69 };
70 
71 #define MASCHINE_BUTTONS   (42)
72 #define MASCHINE_BUTTON(X) ((X) + BTN_MISC)
73 #define MASCHINE_PADS      (16)
74 #define MASCHINE_PAD(X)    ((X) + ABS_PRESSURE)
75 
76 static unsigned short keycode_maschine[] = {
77 	MASCHINE_BUTTON(40), /* mute       */
78 	MASCHINE_BUTTON(39), /* solo       */
79 	MASCHINE_BUTTON(38), /* select     */
80 	MASCHINE_BUTTON(37), /* duplicate  */
81 	MASCHINE_BUTTON(36), /* navigate   */
82 	MASCHINE_BUTTON(35), /* pad mode   */
83 	MASCHINE_BUTTON(34), /* pattern    */
84 	MASCHINE_BUTTON(33), /* scene      */
85 	KEY_RESERVED, /* spacer */
86 
87 	MASCHINE_BUTTON(30), /* rec        */
88 	MASCHINE_BUTTON(31), /* erase      */
89 	MASCHINE_BUTTON(32), /* shift      */
90 	MASCHINE_BUTTON(28), /* grid       */
91 	MASCHINE_BUTTON(27), /* >          */
92 	MASCHINE_BUTTON(26), /* <          */
93 	MASCHINE_BUTTON(25), /* restart    */
94 
95 	MASCHINE_BUTTON(21), /* E          */
96 	MASCHINE_BUTTON(22), /* F          */
97 	MASCHINE_BUTTON(23), /* G          */
98 	MASCHINE_BUTTON(24), /* H          */
99 	MASCHINE_BUTTON(20), /* D          */
100 	MASCHINE_BUTTON(19), /* C          */
101 	MASCHINE_BUTTON(18), /* B          */
102 	MASCHINE_BUTTON(17), /* A          */
103 
104 	MASCHINE_BUTTON(0),  /* control    */
105 	MASCHINE_BUTTON(2),  /* browse     */
106 	MASCHINE_BUTTON(4),  /* <          */
107 	MASCHINE_BUTTON(6),  /* snap       */
108 	MASCHINE_BUTTON(7),  /* autowrite  */
109 	MASCHINE_BUTTON(5),  /* >          */
110 	MASCHINE_BUTTON(3),  /* sampling   */
111 	MASCHINE_BUTTON(1),  /* step       */
112 
113 	MASCHINE_BUTTON(15), /* 8 softkeys */
114 	MASCHINE_BUTTON(14),
115 	MASCHINE_BUTTON(13),
116 	MASCHINE_BUTTON(12),
117 	MASCHINE_BUTTON(11),
118 	MASCHINE_BUTTON(10),
119 	MASCHINE_BUTTON(9),
120 	MASCHINE_BUTTON(8),
121 
122 	MASCHINE_BUTTON(16), /* note repeat */
123 	MASCHINE_BUTTON(29)  /* play        */
124 };
125 
126 #define KONTROLX1_INPUTS	(40)
127 #define KONTROLS4_BUTTONS	(12 * 8)
128 #define KONTROLS4_AXIS		(46)
129 
130 #define KONTROLS4_BUTTON(X)	((X) + BTN_MISC)
131 #define KONTROLS4_ABS(X)	((X) + ABS_HAT0X)
132 
133 #define DEG90		(range / 2)
134 #define DEG180		(range)
135 #define DEG270		(DEG90 + DEG180)
136 #define DEG360		(DEG180 * 2)
137 #define HIGH_PEAK	(268)
138 #define LOW_PEAK	(-7)
139 
140 /* some of these devices have endless rotation potentiometers
141  * built in which use two tapers, 90 degrees phase shifted.
142  * this algorithm decodes them to one single value, ranging
143  * from 0 to 999 */
144 static unsigned int decode_erp(unsigned char a, unsigned char b)
145 {
146 	int weight_a, weight_b;
147 	int pos_a, pos_b;
148 	int ret;
149 	int range = HIGH_PEAK - LOW_PEAK;
150 	int mid_value = (HIGH_PEAK + LOW_PEAK) / 2;
151 
152 	weight_b = abs(mid_value - a) - (range / 2 - 100) / 2;
153 
154 	if (weight_b < 0)
155 		weight_b = 0;
156 
157 	if (weight_b > 100)
158 		weight_b = 100;
159 
160 	weight_a = 100 - weight_b;
161 
162 	if (a < mid_value) {
163 		/* 0..90 and 270..360 degrees */
164 		pos_b = b - LOW_PEAK + DEG270;
165 		if (pos_b >= DEG360)
166 			pos_b -= DEG360;
167 	} else
168 		/* 90..270 degrees */
169 		pos_b = HIGH_PEAK - b + DEG90;
170 
171 
172 	if (b > mid_value)
173 		/* 0..180 degrees */
174 		pos_a = a - LOW_PEAK;
175 	else
176 		/* 180..360 degrees */
177 		pos_a = HIGH_PEAK - a + DEG180;
178 
179 	/* interpolate both slider values, depending on weight factors */
180 	/* 0..99 x DEG360 */
181 	ret = pos_a * weight_a + pos_b * weight_b;
182 
183 	/* normalize to 0..999 */
184 	ret *= 10;
185 	ret /= DEG360;
186 
187 	if (ret < 0)
188 		ret += 1000;
189 
190 	if (ret >= 1000)
191 		ret -= 1000;
192 
193 	return ret;
194 }
195 
196 #undef DEG90
197 #undef DEG180
198 #undef DEG270
199 #undef DEG360
200 #undef HIGH_PEAK
201 #undef LOW_PEAK
202 
203 static inline void snd_caiaq_input_report_abs(struct snd_usb_caiaqdev *cdev,
204 					      int axis, const unsigned char *buf,
205 					      int offset)
206 {
207 	input_report_abs(cdev->input_dev, axis,
208 			 (buf[offset * 2] << 8) | buf[offset * 2 + 1]);
209 }
210 
211 static void snd_caiaq_input_read_analog(struct snd_usb_caiaqdev *cdev,
212 					const unsigned char *buf,
213 					unsigned int len)
214 {
215 	struct input_dev *input_dev = cdev->input_dev;
216 
217 	switch (cdev->chip.usb_id) {
218 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL2):
219 		snd_caiaq_input_report_abs(cdev, ABS_X, buf, 2);
220 		snd_caiaq_input_report_abs(cdev, ABS_Y, buf, 0);
221 		snd_caiaq_input_report_abs(cdev, ABS_Z, buf, 1);
222 		break;
223 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3):
224 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER):
225 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2):
226 		snd_caiaq_input_report_abs(cdev, ABS_X, buf, 0);
227 		snd_caiaq_input_report_abs(cdev, ABS_Y, buf, 1);
228 		snd_caiaq_input_report_abs(cdev, ABS_Z, buf, 2);
229 		break;
230 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
231 		snd_caiaq_input_report_abs(cdev, ABS_HAT0X, buf, 4);
232 		snd_caiaq_input_report_abs(cdev, ABS_HAT0Y, buf, 2);
233 		snd_caiaq_input_report_abs(cdev, ABS_HAT1X, buf, 6);
234 		snd_caiaq_input_report_abs(cdev, ABS_HAT1Y, buf, 1);
235 		snd_caiaq_input_report_abs(cdev, ABS_HAT2X, buf, 7);
236 		snd_caiaq_input_report_abs(cdev, ABS_HAT2Y, buf, 0);
237 		snd_caiaq_input_report_abs(cdev, ABS_HAT3X, buf, 5);
238 		snd_caiaq_input_report_abs(cdev, ABS_HAT3Y, buf, 3);
239 		break;
240 	}
241 
242 	input_sync(input_dev);
243 }
244 
245 static void snd_caiaq_input_read_erp(struct snd_usb_caiaqdev *cdev,
246 				     const char *buf, unsigned int len)
247 {
248 	struct input_dev *input_dev = cdev->input_dev;
249 	int i;
250 
251 	switch (cdev->chip.usb_id) {
252 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
253 		i = decode_erp(buf[0], buf[1]);
254 		input_report_abs(input_dev, ABS_X, i);
255 		input_sync(input_dev);
256 		break;
257 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER):
258 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2):
259 		i = decode_erp(buf[7], buf[5]);
260 		input_report_abs(input_dev, ABS_HAT0X, i);
261 		i = decode_erp(buf[12], buf[14]);
262 		input_report_abs(input_dev, ABS_HAT0Y, i);
263 		i = decode_erp(buf[15], buf[13]);
264 		input_report_abs(input_dev, ABS_HAT1X, i);
265 		i = decode_erp(buf[0], buf[2]);
266 		input_report_abs(input_dev, ABS_HAT1Y, i);
267 		i = decode_erp(buf[3], buf[1]);
268 		input_report_abs(input_dev, ABS_HAT2X, i);
269 		i = decode_erp(buf[8], buf[10]);
270 		input_report_abs(input_dev, ABS_HAT2Y, i);
271 		i = decode_erp(buf[11], buf[9]);
272 		input_report_abs(input_dev, ABS_HAT3X, i);
273 		i = decode_erp(buf[4], buf[6]);
274 		input_report_abs(input_dev, ABS_HAT3Y, i);
275 		input_sync(input_dev);
276 		break;
277 
278 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_MASCHINECONTROLLER):
279 		/* 4 under the left screen */
280 		input_report_abs(input_dev, ABS_HAT0X, decode_erp(buf[21], buf[20]));
281 		input_report_abs(input_dev, ABS_HAT0Y, decode_erp(buf[15], buf[14]));
282 		input_report_abs(input_dev, ABS_HAT1X, decode_erp(buf[9],  buf[8]));
283 		input_report_abs(input_dev, ABS_HAT1Y, decode_erp(buf[3],  buf[2]));
284 
285 		/* 4 under the right screen */
286 		input_report_abs(input_dev, ABS_HAT2X, decode_erp(buf[19], buf[18]));
287 		input_report_abs(input_dev, ABS_HAT2Y, decode_erp(buf[13], buf[12]));
288 		input_report_abs(input_dev, ABS_HAT3X, decode_erp(buf[7],  buf[6]));
289 		input_report_abs(input_dev, ABS_HAT3Y, decode_erp(buf[1],  buf[0]));
290 
291 		/* volume */
292 		input_report_abs(input_dev, ABS_RX, decode_erp(buf[17], buf[16]));
293 		/* tempo */
294 		input_report_abs(input_dev, ABS_RY, decode_erp(buf[11], buf[10]));
295 		/* swing */
296 		input_report_abs(input_dev, ABS_RZ, decode_erp(buf[5],  buf[4]));
297 
298 		input_sync(input_dev);
299 		break;
300 	}
301 }
302 
303 static void snd_caiaq_input_read_io(struct snd_usb_caiaqdev *cdev,
304 				    unsigned char *buf, unsigned int len)
305 {
306 	struct input_dev *input_dev = cdev->input_dev;
307 	unsigned short *keycode = input_dev->keycode;
308 	int i;
309 
310 	if (!keycode)
311 		return;
312 
313 	if (input_dev->id.product == USB_PID_RIGKONTROL2)
314 		for (i = 0; i < len; i++)
315 			buf[i] = ~buf[i];
316 
317 	for (i = 0; i < input_dev->keycodemax && i < len * 8; i++)
318 		input_report_key(input_dev, keycode[i],
319 				 buf[i / 8] & (1 << (i % 8)));
320 
321 	switch (cdev->chip.usb_id) {
322 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER):
323 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2):
324 		input_report_abs(cdev->input_dev, ABS_MISC, 255 - buf[4]);
325 		break;
326 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
327 		/* rotary encoders */
328 		input_report_abs(cdev->input_dev, ABS_X, buf[5] & 0xf);
329 		input_report_abs(cdev->input_dev, ABS_Y, buf[5] >> 4);
330 		input_report_abs(cdev->input_dev, ABS_Z, buf[6] & 0xf);
331 		input_report_abs(cdev->input_dev, ABS_MISC, buf[6] >> 4);
332 		break;
333 	}
334 
335 	input_sync(input_dev);
336 }
337 
338 #define TKS4_MSGBLOCK_SIZE	16
339 
340 static void snd_usb_caiaq_tks4_dispatch(struct snd_usb_caiaqdev *cdev,
341 					const unsigned char *buf,
342 					unsigned int len)
343 {
344 	struct device *dev = caiaqdev_to_dev(cdev);
345 
346 	while (len) {
347 		unsigned int i, block_id = (buf[0] << 8) | buf[1];
348 
349 		switch (block_id) {
350 		case 0:
351 			/* buttons */
352 			for (i = 0; i < KONTROLS4_BUTTONS; i++)
353 				input_report_key(cdev->input_dev, KONTROLS4_BUTTON(i),
354 						 (buf[4 + (i / 8)] >> (i % 8)) & 1);
355 			break;
356 
357 		case 1:
358 			/* left wheel */
359 			input_report_abs(cdev->input_dev, KONTROLS4_ABS(36), buf[9] | ((buf[8] & 0x3) << 8));
360 			/* right wheel */
361 			input_report_abs(cdev->input_dev, KONTROLS4_ABS(37), buf[13] | ((buf[12] & 0x3) << 8));
362 
363 			/* rotary encoders */
364 			input_report_abs(cdev->input_dev, KONTROLS4_ABS(38), buf[3] & 0xf);
365 			input_report_abs(cdev->input_dev, KONTROLS4_ABS(39), buf[4] >> 4);
366 			input_report_abs(cdev->input_dev, KONTROLS4_ABS(40), buf[4] & 0xf);
367 			input_report_abs(cdev->input_dev, KONTROLS4_ABS(41), buf[5] >> 4);
368 			input_report_abs(cdev->input_dev, KONTROLS4_ABS(42), buf[5] & 0xf);
369 			input_report_abs(cdev->input_dev, KONTROLS4_ABS(43), buf[6] >> 4);
370 			input_report_abs(cdev->input_dev, KONTROLS4_ABS(44), buf[6] & 0xf);
371 			input_report_abs(cdev->input_dev, KONTROLS4_ABS(45), buf[7] >> 4);
372 			input_report_abs(cdev->input_dev, KONTROLS4_ABS(46), buf[7] & 0xf);
373 
374 			break;
375 		case 2:
376 			/* Volume Fader Channel D */
377 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(0), buf, 1);
378 			/* Volume Fader Channel B */
379 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(1), buf, 2);
380 			/* Volume Fader Channel A */
381 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(2), buf, 3);
382 			/* Volume Fader Channel C */
383 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(3), buf, 4);
384 			/* Loop Volume */
385 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(4), buf, 6);
386 			/* Crossfader */
387 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(7), buf, 7);
388 
389 			break;
390 
391 		case 3:
392 			/* Tempo Fader R */
393 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(6), buf, 3);
394 			/* Tempo Fader L */
395 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(5), buf, 4);
396 			/* Mic Volume */
397 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(8), buf, 6);
398 			/* Cue Mix */
399 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(9), buf, 7);
400 
401 			break;
402 
403 		case 4:
404 			/* Wheel distance sensor L */
405 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(10), buf, 1);
406 			/* Wheel distance sensor R */
407 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(11), buf, 2);
408 			/* Channel D EQ - Filter */
409 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(12), buf, 3);
410 			/* Channel D EQ - Low */
411 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(13), buf, 4);
412 			/* Channel D EQ - Mid */
413 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(14), buf, 5);
414 			/* Channel D EQ - Hi */
415 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(15), buf, 6);
416 			/* FX2 - dry/wet */
417 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(16), buf, 7);
418 
419 			break;
420 
421 		case 5:
422 			/* FX2 - 1 */
423 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(17), buf, 1);
424 			/* FX2 - 2 */
425 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(18), buf, 2);
426 			/* FX2 - 3 */
427 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(19), buf, 3);
428 			/* Channel B EQ - Filter */
429 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(20), buf, 4);
430 			/* Channel B EQ - Low */
431 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(21), buf, 5);
432 			/* Channel B EQ - Mid */
433 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(22), buf, 6);
434 			/* Channel B EQ - Hi */
435 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(23), buf, 7);
436 
437 			break;
438 
439 		case 6:
440 			/* Channel A EQ - Filter */
441 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(24), buf, 1);
442 			/* Channel A EQ - Low */
443 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(25), buf, 2);
444 			/* Channel A EQ - Mid */
445 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(26), buf, 3);
446 			/* Channel A EQ - Hi */
447 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(27), buf, 4);
448 			/* Channel C EQ - Filter */
449 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(28), buf, 5);
450 			/* Channel C EQ - Low */
451 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(29), buf, 6);
452 			/* Channel C EQ - Mid */
453 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(30), buf, 7);
454 
455 			break;
456 
457 		case 7:
458 			/* Channel C EQ - Hi */
459 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(31), buf, 1);
460 			/* FX1 - wet/dry */
461 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(32), buf, 2);
462 			/* FX1 - 1 */
463 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(33), buf, 3);
464 			/* FX1 - 2 */
465 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(34), buf, 4);
466 			/* FX1 - 3 */
467 			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(35), buf, 5);
468 
469 			break;
470 
471 		default:
472 			dev_dbg(dev, "%s(): bogus block (id %d)\n",
473 				__func__, block_id);
474 			return;
475 		}
476 
477 		len -= TKS4_MSGBLOCK_SIZE;
478 		buf += TKS4_MSGBLOCK_SIZE;
479 	}
480 
481 	input_sync(cdev->input_dev);
482 }
483 
484 #define MASCHINE_MSGBLOCK_SIZE 2
485 
486 static void snd_usb_caiaq_maschine_dispatch(struct snd_usb_caiaqdev *cdev,
487 					const unsigned char *buf,
488 					unsigned int len)
489 {
490 	unsigned int i, pad_id;
491 	__le16 *pressure = (__le16 *) buf;
492 
493 	for (i = 0; i < MASCHINE_PADS; i++) {
494 		pad_id = le16_to_cpu(*pressure) >> 12;
495 		input_report_abs(cdev->input_dev, MASCHINE_PAD(pad_id),
496 				 le16_to_cpu(*pressure) & 0xfff);
497 		pressure++;
498 	}
499 
500 	input_sync(cdev->input_dev);
501 }
502 
503 static void snd_usb_caiaq_ep4_reply_dispatch(struct urb *urb)
504 {
505 	struct snd_usb_caiaqdev *cdev = urb->context;
506 	unsigned char *buf = urb->transfer_buffer;
507 	struct device *dev = &urb->dev->dev;
508 	int ret;
509 
510 	if (urb->status || !cdev || urb != cdev->ep4_in_urb)
511 		return;
512 
513 	switch (cdev->chip.usb_id) {
514 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
515 		if (urb->actual_length < 24)
516 			goto requeue;
517 
518 		if (buf[0] & 0x3)
519 			snd_caiaq_input_read_io(cdev, buf + 1, 7);
520 
521 		if (buf[0] & 0x4)
522 			snd_caiaq_input_read_analog(cdev, buf + 8, 16);
523 
524 		break;
525 
526 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLS4):
527 		snd_usb_caiaq_tks4_dispatch(cdev, buf, urb->actual_length);
528 		break;
529 
530 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_MASCHINECONTROLLER):
531 		if (urb->actual_length < (MASCHINE_PADS * MASCHINE_MSGBLOCK_SIZE))
532 			goto requeue;
533 
534 		snd_usb_caiaq_maschine_dispatch(cdev, buf, urb->actual_length);
535 		break;
536 	}
537 
538 requeue:
539 	cdev->ep4_in_urb->actual_length = 0;
540 	ret = usb_submit_urb(cdev->ep4_in_urb, GFP_ATOMIC);
541 	if (ret < 0)
542 		dev_err(dev, "unable to submit urb. OOM!?\n");
543 }
544 
545 static int snd_usb_caiaq_input_open(struct input_dev *idev)
546 {
547 	struct snd_usb_caiaqdev *cdev = input_get_drvdata(idev);
548 
549 	if (!cdev)
550 		return -EINVAL;
551 
552 	switch (cdev->chip.usb_id) {
553 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
554 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLS4):
555 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_MASCHINECONTROLLER):
556 		if (usb_submit_urb(cdev->ep4_in_urb, GFP_KERNEL) != 0)
557 			return -EIO;
558 		break;
559 	}
560 
561 	return 0;
562 }
563 
564 static void snd_usb_caiaq_input_close(struct input_dev *idev)
565 {
566 	struct snd_usb_caiaqdev *cdev = input_get_drvdata(idev);
567 
568 	if (!cdev)
569 		return;
570 
571 	switch (cdev->chip.usb_id) {
572 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
573 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLS4):
574 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_MASCHINECONTROLLER):
575 		usb_kill_urb(cdev->ep4_in_urb);
576 		break;
577 	}
578 }
579 
580 void snd_usb_caiaq_input_dispatch(struct snd_usb_caiaqdev *cdev,
581 				  char *buf,
582 				  unsigned int len)
583 {
584 	if (!cdev->input_dev || len < 1)
585 		return;
586 
587 	switch (buf[0]) {
588 	case EP1_CMD_READ_ANALOG:
589 		snd_caiaq_input_read_analog(cdev, buf + 1, len - 1);
590 		break;
591 	case EP1_CMD_READ_ERP:
592 		snd_caiaq_input_read_erp(cdev, buf + 1, len - 1);
593 		break;
594 	case EP1_CMD_READ_IO:
595 		snd_caiaq_input_read_io(cdev, buf + 1, len - 1);
596 		break;
597 	}
598 }
599 
600 int snd_usb_caiaq_input_init(struct snd_usb_caiaqdev *cdev)
601 {
602 	struct usb_device *usb_dev = cdev->chip.dev;
603 	struct input_dev *input;
604 	int i, ret = 0;
605 
606 	input = input_allocate_device();
607 	if (!input)
608 		return -ENOMEM;
609 
610 	usb_make_path(usb_dev, cdev->phys, sizeof(cdev->phys));
611 	strlcat(cdev->phys, "/input0", sizeof(cdev->phys));
612 
613 	input->name = cdev->product_name;
614 	input->phys = cdev->phys;
615 	usb_to_input_id(usb_dev, &input->id);
616 	input->dev.parent = &usb_dev->dev;
617 
618 	input_set_drvdata(input, cdev);
619 
620 	switch (cdev->chip.usb_id) {
621 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL2):
622 		input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
623 		input->absbit[0] = BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) |
624 			BIT_MASK(ABS_Z);
625 		BUILD_BUG_ON(sizeof(cdev->keycode) < sizeof(keycode_rk2));
626 		memcpy(cdev->keycode, keycode_rk2, sizeof(keycode_rk2));
627 		input->keycodemax = ARRAY_SIZE(keycode_rk2);
628 		input_set_abs_params(input, ABS_X, 0, 4096, 0, 10);
629 		input_set_abs_params(input, ABS_Y, 0, 4096, 0, 10);
630 		input_set_abs_params(input, ABS_Z, 0, 4096, 0, 10);
631 		snd_usb_caiaq_set_auto_msg(cdev, 1, 10, 0);
632 		break;
633 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3):
634 		input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
635 		input->absbit[0] = BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) |
636 			BIT_MASK(ABS_Z);
637 		BUILD_BUG_ON(sizeof(cdev->keycode) < sizeof(keycode_rk3));
638 		memcpy(cdev->keycode, keycode_rk3, sizeof(keycode_rk3));
639 		input->keycodemax = ARRAY_SIZE(keycode_rk3);
640 		input_set_abs_params(input, ABS_X, 0, 1024, 0, 10);
641 		input_set_abs_params(input, ABS_Y, 0, 1024, 0, 10);
642 		input_set_abs_params(input, ABS_Z, 0, 1024, 0, 10);
643 		snd_usb_caiaq_set_auto_msg(cdev, 1, 10, 0);
644 		break;
645 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
646 		input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
647 		input->absbit[0] = BIT_MASK(ABS_X);
648 		BUILD_BUG_ON(sizeof(cdev->keycode) < sizeof(keycode_ak1));
649 		memcpy(cdev->keycode, keycode_ak1, sizeof(keycode_ak1));
650 		input->keycodemax = ARRAY_SIZE(keycode_ak1);
651 		input_set_abs_params(input, ABS_X, 0, 999, 0, 10);
652 		snd_usb_caiaq_set_auto_msg(cdev, 1, 0, 5);
653 		break;
654 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER):
655 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2):
656 		input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
657 		input->absbit[0] = BIT_MASK(ABS_HAT0X) | BIT_MASK(ABS_HAT0Y) |
658 				   BIT_MASK(ABS_HAT1X) | BIT_MASK(ABS_HAT1Y) |
659 				   BIT_MASK(ABS_HAT2X) | BIT_MASK(ABS_HAT2Y) |
660 				   BIT_MASK(ABS_HAT3X) | BIT_MASK(ABS_HAT3Y) |
661 				   BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) |
662 				   BIT_MASK(ABS_Z);
663 		input->absbit[BIT_WORD(ABS_MISC)] |= BIT_MASK(ABS_MISC);
664 		BUILD_BUG_ON(sizeof(cdev->keycode) < sizeof(keycode_kore));
665 		memcpy(cdev->keycode, keycode_kore, sizeof(keycode_kore));
666 		input->keycodemax = ARRAY_SIZE(keycode_kore);
667 		input_set_abs_params(input, ABS_HAT0X, 0, 999, 0, 10);
668 		input_set_abs_params(input, ABS_HAT0Y, 0, 999, 0, 10);
669 		input_set_abs_params(input, ABS_HAT1X, 0, 999, 0, 10);
670 		input_set_abs_params(input, ABS_HAT1Y, 0, 999, 0, 10);
671 		input_set_abs_params(input, ABS_HAT2X, 0, 999, 0, 10);
672 		input_set_abs_params(input, ABS_HAT2Y, 0, 999, 0, 10);
673 		input_set_abs_params(input, ABS_HAT3X, 0, 999, 0, 10);
674 		input_set_abs_params(input, ABS_HAT3Y, 0, 999, 0, 10);
675 		input_set_abs_params(input, ABS_X, 0, 4096, 0, 10);
676 		input_set_abs_params(input, ABS_Y, 0, 4096, 0, 10);
677 		input_set_abs_params(input, ABS_Z, 0, 4096, 0, 10);
678 		input_set_abs_params(input, ABS_MISC, 0, 255, 0, 1);
679 		snd_usb_caiaq_set_auto_msg(cdev, 1, 10, 5);
680 		break;
681 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
682 		input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
683 		input->absbit[0] = BIT_MASK(ABS_HAT0X) | BIT_MASK(ABS_HAT0Y) |
684 				   BIT_MASK(ABS_HAT1X) | BIT_MASK(ABS_HAT1Y) |
685 				   BIT_MASK(ABS_HAT2X) | BIT_MASK(ABS_HAT2Y) |
686 				   BIT_MASK(ABS_HAT3X) | BIT_MASK(ABS_HAT3Y) |
687 				   BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) |
688 				   BIT_MASK(ABS_Z);
689 		input->absbit[BIT_WORD(ABS_MISC)] |= BIT_MASK(ABS_MISC);
690 		BUILD_BUG_ON(sizeof(cdev->keycode) < KONTROLX1_INPUTS);
691 		for (i = 0; i < KONTROLX1_INPUTS; i++)
692 			cdev->keycode[i] = BTN_MISC + i;
693 		input->keycodemax = KONTROLX1_INPUTS;
694 
695 		/* analog potentiometers */
696 		input_set_abs_params(input, ABS_HAT0X, 0, 4096, 0, 10);
697 		input_set_abs_params(input, ABS_HAT0Y, 0, 4096, 0, 10);
698 		input_set_abs_params(input, ABS_HAT1X, 0, 4096, 0, 10);
699 		input_set_abs_params(input, ABS_HAT1Y, 0, 4096, 0, 10);
700 		input_set_abs_params(input, ABS_HAT2X, 0, 4096, 0, 10);
701 		input_set_abs_params(input, ABS_HAT2Y, 0, 4096, 0, 10);
702 		input_set_abs_params(input, ABS_HAT3X, 0, 4096, 0, 10);
703 		input_set_abs_params(input, ABS_HAT3Y, 0, 4096, 0, 10);
704 
705 		/* rotary encoders */
706 		input_set_abs_params(input, ABS_X, 0, 0xf, 0, 1);
707 		input_set_abs_params(input, ABS_Y, 0, 0xf, 0, 1);
708 		input_set_abs_params(input, ABS_Z, 0, 0xf, 0, 1);
709 		input_set_abs_params(input, ABS_MISC, 0, 0xf, 0, 1);
710 
711 		cdev->ep4_in_urb = usb_alloc_urb(0, GFP_KERNEL);
712 		if (!cdev->ep4_in_urb) {
713 			ret = -ENOMEM;
714 			goto exit_free_idev;
715 		}
716 
717 		usb_fill_bulk_urb(cdev->ep4_in_urb, usb_dev,
718 				  usb_rcvbulkpipe(usb_dev, 0x4),
719 				  cdev->ep4_in_buf, EP4_BUFSIZE,
720 				  snd_usb_caiaq_ep4_reply_dispatch, cdev);
721 		ret = usb_urb_ep_type_check(cdev->ep4_in_urb);
722 		if (ret < 0)
723 			goto exit_free_idev;
724 
725 		snd_usb_caiaq_set_auto_msg(cdev, 1, 10, 5);
726 
727 		break;
728 
729 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLS4):
730 		input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
731 		BUILD_BUG_ON(sizeof(cdev->keycode) < KONTROLS4_BUTTONS);
732 		for (i = 0; i < KONTROLS4_BUTTONS; i++)
733 			cdev->keycode[i] = KONTROLS4_BUTTON(i);
734 		input->keycodemax = KONTROLS4_BUTTONS;
735 
736 		for (i = 0; i < KONTROLS4_AXIS; i++) {
737 			int axis = KONTROLS4_ABS(i);
738 			input->absbit[BIT_WORD(axis)] |= BIT_MASK(axis);
739 		}
740 
741 		/* 36 analog potentiometers and faders */
742 		for (i = 0; i < 36; i++)
743 			input_set_abs_params(input, KONTROLS4_ABS(i), 0, 0xfff, 0, 10);
744 
745 		/* 2 encoder wheels */
746 		input_set_abs_params(input, KONTROLS4_ABS(36), 0, 0x3ff, 0, 1);
747 		input_set_abs_params(input, KONTROLS4_ABS(37), 0, 0x3ff, 0, 1);
748 
749 		/* 9 rotary encoders */
750 		for (i = 0; i < 9; i++)
751 			input_set_abs_params(input, KONTROLS4_ABS(38+i), 0, 0xf, 0, 1);
752 
753 		cdev->ep4_in_urb = usb_alloc_urb(0, GFP_KERNEL);
754 		if (!cdev->ep4_in_urb) {
755 			ret = -ENOMEM;
756 			goto exit_free_idev;
757 		}
758 
759 		usb_fill_bulk_urb(cdev->ep4_in_urb, usb_dev,
760 				  usb_rcvbulkpipe(usb_dev, 0x4),
761 				  cdev->ep4_in_buf, EP4_BUFSIZE,
762 				  snd_usb_caiaq_ep4_reply_dispatch, cdev);
763 		ret = usb_urb_ep_type_check(cdev->ep4_in_urb);
764 		if (ret < 0)
765 			goto exit_free_idev;
766 
767 		snd_usb_caiaq_set_auto_msg(cdev, 1, 10, 5);
768 
769 		break;
770 
771 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_MASCHINECONTROLLER):
772 		input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
773 		input->absbit[0] = BIT_MASK(ABS_HAT0X) | BIT_MASK(ABS_HAT0Y) |
774 			BIT_MASK(ABS_HAT1X) | BIT_MASK(ABS_HAT1Y) |
775 			BIT_MASK(ABS_HAT2X) | BIT_MASK(ABS_HAT2Y) |
776 			BIT_MASK(ABS_HAT3X) | BIT_MASK(ABS_HAT3Y) |
777 			BIT_MASK(ABS_RX) | BIT_MASK(ABS_RY) |
778 			BIT_MASK(ABS_RZ);
779 
780 		BUILD_BUG_ON(sizeof(cdev->keycode) < sizeof(keycode_maschine));
781 		memcpy(cdev->keycode, keycode_maschine, sizeof(keycode_maschine));
782 		input->keycodemax = ARRAY_SIZE(keycode_maschine);
783 
784 		for (i = 0; i < MASCHINE_PADS; i++) {
785 			input->absbit[0] |= MASCHINE_PAD(i);
786 			input_set_abs_params(input, MASCHINE_PAD(i), 0, 0xfff, 5, 10);
787 		}
788 
789 		input_set_abs_params(input, ABS_HAT0X, 0, 999, 0, 10);
790 		input_set_abs_params(input, ABS_HAT0Y, 0, 999, 0, 10);
791 		input_set_abs_params(input, ABS_HAT1X, 0, 999, 0, 10);
792 		input_set_abs_params(input, ABS_HAT1Y, 0, 999, 0, 10);
793 		input_set_abs_params(input, ABS_HAT2X, 0, 999, 0, 10);
794 		input_set_abs_params(input, ABS_HAT2Y, 0, 999, 0, 10);
795 		input_set_abs_params(input, ABS_HAT3X, 0, 999, 0, 10);
796 		input_set_abs_params(input, ABS_HAT3Y, 0, 999, 0, 10);
797 		input_set_abs_params(input, ABS_RX, 0, 999, 0, 10);
798 		input_set_abs_params(input, ABS_RY, 0, 999, 0, 10);
799 		input_set_abs_params(input, ABS_RZ, 0, 999, 0, 10);
800 
801 		cdev->ep4_in_urb = usb_alloc_urb(0, GFP_KERNEL);
802 		if (!cdev->ep4_in_urb) {
803 			ret = -ENOMEM;
804 			goto exit_free_idev;
805 		}
806 
807 		usb_fill_bulk_urb(cdev->ep4_in_urb, usb_dev,
808 				  usb_rcvbulkpipe(usb_dev, 0x4),
809 				  cdev->ep4_in_buf, EP4_BUFSIZE,
810 				  snd_usb_caiaq_ep4_reply_dispatch, cdev);
811 		ret = usb_urb_ep_type_check(cdev->ep4_in_urb);
812 		if (ret < 0)
813 			goto exit_free_idev;
814 
815 		snd_usb_caiaq_set_auto_msg(cdev, 1, 10, 5);
816 		break;
817 
818 	default:
819 		/* no input methods supported on this device */
820 		goto exit_free_idev;
821 	}
822 
823 	input->open = snd_usb_caiaq_input_open;
824 	input->close = snd_usb_caiaq_input_close;
825 	input->keycode = cdev->keycode;
826 	input->keycodesize = sizeof(unsigned short);
827 	for (i = 0; i < input->keycodemax; i++)
828 		__set_bit(cdev->keycode[i], input->keybit);
829 
830 	cdev->input_dev = input;
831 
832 	ret = input_register_device(input);
833 	if (ret < 0)
834 		goto exit_free_idev;
835 
836 	return 0;
837 
838 exit_free_idev:
839 	input_free_device(input);
840 	cdev->input_dev = NULL;
841 	return ret;
842 }
843 
844 void snd_usb_caiaq_input_free(struct snd_usb_caiaqdev *cdev)
845 {
846 	if (!cdev || !cdev->input_dev)
847 		return;
848 
849 	usb_kill_urb(cdev->ep4_in_urb);
850 	usb_free_urb(cdev->ep4_in_urb);
851 	cdev->ep4_in_urb = NULL;
852 
853 	input_unregister_device(cdev->input_dev);
854 	cdev->input_dev = NULL;
855 }
856