ALSA: snd-usb-caiaq: clean up header includes
[linux-2.6.git] / sound / usb / caiaq / caiaq-input.c
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/pcm.h>
23 #include "caiaq-device.h"
24 #include "caiaq-input.h"
25
26 static unsigned short keycode_ak1[] =  { KEY_C, KEY_B, KEY_A };
27 static unsigned short keycode_rk2[] =  { KEY_1, KEY_2, KEY_3, KEY_4,
28                                          KEY_5, KEY_6, KEY_7 };
29 static unsigned short keycode_rk3[] =  { KEY_1, KEY_2, KEY_3, KEY_4,
30                                          KEY_5, KEY_6, KEY_7, KEY_5, KEY_6 };
31
32 static unsigned short keycode_kore[] = {
33         KEY_FN_F1,      /* "menu"               */
34         KEY_FN_F7,      /* "lcd backlight       */
35         KEY_FN_F2,      /* "control"            */
36         KEY_FN_F3,      /* "enter"              */
37         KEY_FN_F4,      /* "view"               */
38         KEY_FN_F5,      /* "esc"                */
39         KEY_FN_F6,      /* "sound"              */
40         KEY_FN_F8,      /* array spacer, never triggered. */
41         KEY_RIGHT,
42         KEY_DOWN,
43         KEY_UP,
44         KEY_LEFT,
45         KEY_SOUND,      /* "listen"             */
46         KEY_RECORD,
47         KEY_PLAYPAUSE,
48         KEY_STOP,
49         BTN_4,          /* 8 softkeys */
50         BTN_3,
51         BTN_2,
52         BTN_1,
53         BTN_8,
54         BTN_7,
55         BTN_6,
56         BTN_5,
57         KEY_BRL_DOT4,   /* touch sensitive knobs */
58         KEY_BRL_DOT3,
59         KEY_BRL_DOT2,
60         KEY_BRL_DOT1,
61         KEY_BRL_DOT8,
62         KEY_BRL_DOT7,
63         KEY_BRL_DOT6,
64         KEY_BRL_DOT5
65 };
66
67 #define DEG90           (range / 2)
68 #define DEG180          (range)
69 #define DEG270          (DEG90 + DEG180)
70 #define DEG360          (DEG180 * 2)
71 #define HIGH_PEAK       (268)
72 #define LOW_PEAK        (-7)
73
74 /* some of these devices have endless rotation potentiometers
75  * built in which use two tapers, 90 degrees phase shifted.
76  * this algorithm decodes them to one single value, ranging
77  * from 0 to 999 */
78 static unsigned int decode_erp(unsigned char a, unsigned char b)
79 {
80         int weight_a, weight_b;
81         int pos_a, pos_b;
82         int ret;
83         int range = HIGH_PEAK - LOW_PEAK;
84         int mid_value = (HIGH_PEAK + LOW_PEAK) / 2;
85
86         weight_b = abs(mid_value - a) - (range / 2 - 100) / 2;
87
88         if (weight_b < 0)
89                 weight_b = 0;
90
91         if (weight_b > 100)
92                 weight_b = 100;
93
94         weight_a = 100 - weight_b;
95
96         if (a < mid_value) {
97                 /* 0..90 and 270..360 degrees */
98                 pos_b = b - LOW_PEAK + DEG270;
99                 if (pos_b >= DEG360)
100                         pos_b -= DEG360;
101         } else
102                 /* 90..270 degrees */
103                 pos_b = HIGH_PEAK - b + DEG90;
104
105
106         if (b > mid_value)
107                 /* 0..180 degrees */
108                 pos_a = a - LOW_PEAK;
109         else
110                 /* 180..360 degrees */
111                 pos_a = HIGH_PEAK - a + DEG180;
112
113         /* interpolate both slider values, depending on weight factors */
114         /* 0..99 x DEG360 */
115         ret = pos_a * weight_a + pos_b * weight_b;
116
117         /* normalize to 0..999 */
118         ret *= 10;
119         ret /= DEG360;
120
121         if (ret < 0)
122                 ret += 1000;
123
124         if (ret >= 1000)
125                 ret -= 1000;
126
127         return ret;
128 }
129
130 #undef DEG90
131 #undef DEG180
132 #undef DEG270
133 #undef DEG360
134 #undef HIGH_PEAK
135 #undef LOW_PEAK
136
137
138 static void snd_caiaq_input_read_analog(struct snd_usb_caiaqdev *dev,
139                                         const unsigned char *buf,
140                                         unsigned int len)
141 {
142         struct input_dev *input_dev = dev->input_dev;
143
144         switch (dev->chip.usb_id) {
145         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL2):
146                 input_report_abs(input_dev, ABS_X, (buf[4] << 8) | buf[5]);
147                 input_report_abs(input_dev, ABS_Y, (buf[0] << 8) | buf[1]);
148                 input_report_abs(input_dev, ABS_Z, (buf[2] << 8) | buf[3]);
149                 input_sync(input_dev);
150                 break;
151         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3):
152                 input_report_abs(input_dev, ABS_X, (buf[0] << 8) | buf[1]);
153                 input_report_abs(input_dev, ABS_Y, (buf[2] << 8) | buf[3]);
154                 input_report_abs(input_dev, ABS_Z, (buf[4] << 8) | buf[5]);
155                 input_sync(input_dev);
156                 break;
157         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER):
158         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2):
159                 input_report_abs(input_dev, ABS_X, (buf[0] << 8) | buf[1]);
160                 input_report_abs(input_dev, ABS_Y, (buf[2] << 8) | buf[3]);
161                 input_report_abs(input_dev, ABS_Z, (buf[4] << 8) | buf[5]);
162                 input_sync(input_dev);
163                 break;
164         }
165 }
166
167 static void snd_caiaq_input_read_erp(struct snd_usb_caiaqdev *dev,
168                                      const char *buf, unsigned int len)
169 {
170         struct input_dev *input_dev = dev->input_dev;
171         int i;
172
173         switch (dev->chip.usb_id) {
174         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
175                 i = decode_erp(buf[0], buf[1]);
176                 input_report_abs(input_dev, ABS_X, i);
177                 input_sync(input_dev);
178                 break;
179         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER):
180         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2):
181                 i = decode_erp(buf[7], buf[5]);
182                 input_report_abs(input_dev, ABS_HAT0X, i);
183                 i = decode_erp(buf[12], buf[14]);
184                 input_report_abs(input_dev, ABS_HAT0Y, i);
185                 i = decode_erp(buf[15], buf[13]);
186                 input_report_abs(input_dev, ABS_HAT1X, i);
187                 i = decode_erp(buf[0], buf[2]);
188                 input_report_abs(input_dev, ABS_HAT1Y, i);
189                 i = decode_erp(buf[3], buf[1]);
190                 input_report_abs(input_dev, ABS_HAT2X, i);
191                 i = decode_erp(buf[8], buf[10]);
192                 input_report_abs(input_dev, ABS_HAT2Y, i);
193                 i = decode_erp(buf[11], buf[9]);
194                 input_report_abs(input_dev, ABS_HAT3X, i);
195                 i = decode_erp(buf[4], buf[6]);
196                 input_report_abs(input_dev, ABS_HAT3Y, i);
197                 input_sync(input_dev);
198                 break;
199         }
200 }
201
202 static void snd_caiaq_input_read_io(struct snd_usb_caiaqdev *dev,
203                                     char *buf, unsigned int len)
204 {
205         struct input_dev *input_dev = dev->input_dev;
206         unsigned short *keycode = input_dev->keycode;
207         int i;
208
209         if (!keycode)
210                 return;
211
212         if (input_dev->id.product == USB_PID_RIGKONTROL2)
213                 for (i = 0; i < len; i++)
214                         buf[i] = ~buf[i];
215
216         for (i = 0; i < input_dev->keycodemax && i < len * 8; i++)
217                 input_report_key(input_dev, keycode[i],
218                                  buf[i / 8] & (1 << (i % 8)));
219
220         if (dev->chip.usb_id ==
221                 USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER) ||
222             dev->chip.usb_id ==
223                 USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2))
224                 input_report_abs(dev->input_dev, ABS_MISC, 255 - buf[4]);
225
226         input_sync(input_dev);
227 }
228
229 void snd_usb_caiaq_input_dispatch(struct snd_usb_caiaqdev *dev,
230                                   char *buf,
231                                   unsigned int len)
232 {
233         if (!dev->input_dev || len < 1)
234                 return;
235
236         switch (buf[0]) {
237         case EP1_CMD_READ_ANALOG:
238                 snd_caiaq_input_read_analog(dev, buf + 1, len - 1);
239                 break;
240         case EP1_CMD_READ_ERP:
241                 snd_caiaq_input_read_erp(dev, buf + 1, len - 1);
242                 break;
243         case EP1_CMD_READ_IO:
244                 snd_caiaq_input_read_io(dev, buf + 1, len - 1);
245                 break;
246         }
247 }
248
249 int snd_usb_caiaq_input_init(struct snd_usb_caiaqdev *dev)
250 {
251         struct usb_device *usb_dev = dev->chip.dev;
252         struct input_dev *input;
253         int i, ret;
254
255         input = input_allocate_device();
256         if (!input)
257                 return -ENOMEM;
258
259         usb_make_path(usb_dev, dev->phys, sizeof(dev->phys));
260         strlcat(dev->phys, "/input0", sizeof(dev->phys));
261
262         input->name = dev->product_name;
263         input->phys = dev->phys;
264         usb_to_input_id(usb_dev, &input->id);
265         input->dev.parent = &usb_dev->dev;
266
267         switch (dev->chip.usb_id) {
268         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL2):
269                 input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
270                 input->absbit[0] = BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) |
271                         BIT_MASK(ABS_Z);
272                 BUILD_BUG_ON(sizeof(dev->keycode) < sizeof(keycode_rk2));
273                 memcpy(dev->keycode, keycode_rk2, sizeof(keycode_rk2));
274                 input->keycodemax = ARRAY_SIZE(keycode_rk2);
275                 input_set_abs_params(input, ABS_X, 0, 4096, 0, 10);
276                 input_set_abs_params(input, ABS_Y, 0, 4096, 0, 10);
277                 input_set_abs_params(input, ABS_Z, 0, 4096, 0, 10);
278                 snd_usb_caiaq_set_auto_msg(dev, 1, 10, 0);
279                 break;
280         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3):
281                 input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
282                 input->absbit[0] = BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) |
283                         BIT_MASK(ABS_Z);
284                 BUILD_BUG_ON(sizeof(dev->keycode) < sizeof(keycode_rk3));
285                 memcpy(dev->keycode, keycode_rk3, sizeof(keycode_rk3));
286                 input->keycodemax = ARRAY_SIZE(keycode_rk3);
287                 input_set_abs_params(input, ABS_X, 0, 1024, 0, 10);
288                 input_set_abs_params(input, ABS_Y, 0, 1024, 0, 10);
289                 input_set_abs_params(input, ABS_Z, 0, 1024, 0, 10);
290                 snd_usb_caiaq_set_auto_msg(dev, 1, 10, 0);
291                 break;
292         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
293                 input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
294                 input->absbit[0] = BIT_MASK(ABS_X);
295                 BUILD_BUG_ON(sizeof(dev->keycode) < sizeof(keycode_ak1));
296                 memcpy(dev->keycode, keycode_ak1, sizeof(keycode_ak1));
297                 input->keycodemax = ARRAY_SIZE(keycode_ak1);
298                 input_set_abs_params(input, ABS_X, 0, 999, 0, 10);
299                 snd_usb_caiaq_set_auto_msg(dev, 1, 0, 5);
300                 break;
301         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER):
302         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2):
303                 input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
304                 input->absbit[0] = BIT_MASK(ABS_HAT0X) | BIT_MASK(ABS_HAT0Y) |
305                                    BIT_MASK(ABS_HAT1X) | BIT_MASK(ABS_HAT1Y) |
306                                    BIT_MASK(ABS_HAT2X) | BIT_MASK(ABS_HAT2Y) |
307                                    BIT_MASK(ABS_HAT3X) | BIT_MASK(ABS_HAT3Y) |
308                                    BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) |
309                                    BIT_MASK(ABS_Z);
310                 input->absbit[BIT_WORD(ABS_MISC)] |= BIT_MASK(ABS_MISC);
311                 BUILD_BUG_ON(sizeof(dev->keycode) < sizeof(keycode_kore));
312                 memcpy(dev->keycode, keycode_kore, sizeof(keycode_kore));
313                 input->keycodemax = ARRAY_SIZE(keycode_kore);
314                 input_set_abs_params(input, ABS_HAT0X, 0, 999, 0, 10);
315                 input_set_abs_params(input, ABS_HAT0Y, 0, 999, 0, 10);
316                 input_set_abs_params(input, ABS_HAT1X, 0, 999, 0, 10);
317                 input_set_abs_params(input, ABS_HAT1Y, 0, 999, 0, 10);
318                 input_set_abs_params(input, ABS_HAT2X, 0, 999, 0, 10);
319                 input_set_abs_params(input, ABS_HAT2Y, 0, 999, 0, 10);
320                 input_set_abs_params(input, ABS_HAT3X, 0, 999, 0, 10);
321                 input_set_abs_params(input, ABS_HAT3Y, 0, 999, 0, 10);
322                 input_set_abs_params(input, ABS_X, 0, 4096, 0, 10);
323                 input_set_abs_params(input, ABS_Y, 0, 4096, 0, 10);
324                 input_set_abs_params(input, ABS_Z, 0, 4096, 0, 10);
325                 input_set_abs_params(input, ABS_MISC, 0, 255, 0, 1);
326                 snd_usb_caiaq_set_auto_msg(dev, 1, 10, 5);
327                 break;
328         default:
329                 /* no input methods supported on this device */
330                 input_free_device(input);
331                 return 0;
332         }
333
334         input->keycode = dev->keycode;
335         input->keycodesize = sizeof(unsigned short);
336         for (i = 0; i < input->keycodemax; i++)
337                 __set_bit(dev->keycode[i], input->keybit);
338
339         ret = input_register_device(input);
340         if (ret < 0) {
341                 input_free_device(input);
342                 return ret;
343         }
344
345         dev->input_dev = input;
346         return 0;
347 }
348
349 void snd_usb_caiaq_input_free(struct snd_usb_caiaqdev *dev)
350 {
351         if (!dev || !dev->input_dev)
352                 return;
353
354         input_unregister_device(dev->input_dev);
355         dev->input_dev = NULL;
356 }
357