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ALSA: usb/caiaq: Add support for Traktor Kontrol X1
[linux-2.6.git] / sound / usb / caiaq / input.c
blob27ed0bc651aea6e9308f3202eb8066a9113f404f
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>
20 #include <linux/usb.h>
21 #include <linux/usb/input.h>
22 #include <sound/core.h>
23 #include <sound/pcm.h>
24
25 #include "device.h"
26 #include "input.h"
27
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 };
33
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
69 #define KONTROLX1_INPUTS 40
70
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)
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
90 weight_b = abs(mid_value - a) - (range / 2 - 100) / 2;
91
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;
127
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
142 static void snd_caiaq_input_read_analog(struct snd_usb_caiaqdev *dev,
143 const unsigned char *buf,
144 unsigned int len)
145 {
146 struct input_dev *input_dev = dev->input_dev;
147
148 switch (dev->chip.usb_id) {
149 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL2):
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);
154 break;
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):
162 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2):
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);
167 break;
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;
179 }
180 }
181
182 static void snd_caiaq_input_read_erp(struct snd_usb_caiaqdev *dev,
183 const char *buf, unsigned int len)
184 {
185 struct input_dev *input_dev = dev->input_dev;
186 int i;
187
188 switch (dev->chip.usb_id) {
189 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
190 i = decode_erp(buf[0], buf[1]);
191 input_report_abs(input_dev, ABS_X, i);
192 input_sync(input_dev);
193 break;
194 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER):
195 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2):
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;
214 }
215 }
216
217 static void snd_caiaq_input_read_io(struct snd_usb_caiaqdev *dev,
218 unsigned char *buf, unsigned int len)
219 {
220 struct input_dev *input_dev = dev->input_dev;
221 unsigned short *keycode = input_dev->keycode;
222 int i;
223
224 if (!keycode)
225 return;
226
227 if (input_dev->id.product == USB_PID_RIGKONTROL2)
228 for (i = 0; i < len; i++)
229 buf[i] = ~buf[i];
230
231 for (i = 0; i < input_dev->keycodemax && i < len * 8; i++)
232 input_report_key(input_dev, keycode[i],
233 buf[i / 8] & (1 << (i % 8)));
234
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):
238 input_report_abs(dev->input_dev, ABS_MISC, 255 - buf[4]);
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 }
248
249 input_sync(input_dev);
250 }
251
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
313 void snd_usb_caiaq_input_dispatch(struct snd_usb_caiaqdev *dev,
314 char *buf,
315 unsigned int len)
316 {
317 if (!dev->input_dev || len < 1)
318 return;
319
320 switch (buf[0]) {
321 case EP1_CMD_READ_ANALOG:
322 snd_caiaq_input_read_analog(dev, buf + 1, len - 1);
323 break;
324 case EP1_CMD_READ_ERP:
325 snd_caiaq_input_read_erp(dev, buf + 1, len - 1);
326 break;
327 case EP1_CMD_READ_IO:
328 snd_caiaq_input_read_io(dev, buf + 1, len - 1);
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;
337 int i, ret = 0;
338
339 input = input_allocate_device();
340 if (!input)
341 return -ENOMEM;
342
343 usb_make_path(usb_dev, dev->phys, sizeof(dev->phys));
344 strlcat(dev->phys, "/input0", sizeof(dev->phys));
345
346 input->name = dev->product_name;
347 input->phys = dev->phys;
348 usb_to_input_id(usb_dev, &input->id);
349 input->dev.parent = &usb_dev->dev;
350
351 input_set_drvdata(input, dev);
352
353 switch (dev->chip.usb_id) {
354 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL2):
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);
358 BUILD_BUG_ON(sizeof(dev->keycode) < sizeof(keycode_rk2));
359 memcpy(dev->keycode, keycode_rk2, sizeof(keycode_rk2));
360 input->keycodemax = ARRAY_SIZE(keycode_rk2);
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;
366 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3):
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);
370 BUILD_BUG_ON(sizeof(dev->keycode) < sizeof(keycode_rk3));
371 memcpy(dev->keycode, keycode_rk3, sizeof(keycode_rk3));
372 input->keycodemax = ARRAY_SIZE(keycode_rk3);
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;
378 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
379 input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
380 input->absbit[0] = BIT_MASK(ABS_X);
381 BUILD_BUG_ON(sizeof(dev->keycode) < sizeof(keycode_ak1));
382 memcpy(dev->keycode, keycode_ak1, sizeof(keycode_ak1));
383 input->keycodemax = ARRAY_SIZE(keycode_ak1);
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;
387 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER):
388 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2):
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);
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
457 break;
458 default:
459 /* no input methods supported on this device */
460 goto exit_free_idev;
461 }
462
463 input->open = snd_usb_caiaq_input_open;
464 input->close = snd_usb_caiaq_input_close;
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
470 ret = input_register_device(input);
471 if (ret < 0)
472 goto exit_free_idev;
473
474 dev->input_dev = input;
475 return 0;
476
477 exit_free_idev:
478 input_free_device(input);
479 return ret;
480 }
481
482 void snd_usb_caiaq_input_free(struct snd_usb_caiaqdev *dev)
483 {
484 if (!dev || !dev->input_dev)
485 return;
486
487 usb_kill_urb(dev->ep4_in_urb);
488 usb_free_urb(dev->ep4_in_urb);
489 dev->ep4_in_urb = NULL;
490
491 input_unregister_device(dev->input_dev);
492 dev->input_dev = NULL;
493 }
494
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