Commit | Line | Data |
---|---|---|
c0efd232 LP |
1 | /* |
2 | * uvc_ctrl.c -- USB Video Class driver - Controls | |
3 | * | |
11fc5baf LP |
4 | * Copyright (C) 2005-2010 |
5 | * Laurent Pinchart (laurent.pinchart@ideasonboard.com) | |
c0efd232 LP |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | */ | |
13 | ||
14 | #include <linux/kernel.h> | |
c0efd232 LP |
15 | #include <linux/list.h> |
16 | #include <linux/module.h> | |
5a0e3ad6 | 17 | #include <linux/slab.h> |
c0efd232 LP |
18 | #include <linux/uaccess.h> |
19 | #include <linux/usb.h> | |
20 | #include <linux/videodev2.h> | |
21 | #include <linux/vmalloc.h> | |
22 | #include <linux/wait.h> | |
60063497 | 23 | #include <linux/atomic.h> |
c0efd232 LP |
24 | |
25 | #include "uvcvideo.h" | |
26 | ||
c0efd232 LP |
27 | #define UVC_CTRL_DATA_CURRENT 0 |
28 | #define UVC_CTRL_DATA_BACKUP 1 | |
59529081 LP |
29 | #define UVC_CTRL_DATA_MIN 2 |
30 | #define UVC_CTRL_DATA_MAX 3 | |
31 | #define UVC_CTRL_DATA_RES 4 | |
32 | #define UVC_CTRL_DATA_DEF 5 | |
33 | #define UVC_CTRL_DATA_LAST 6 | |
c0efd232 LP |
34 | |
35 | /* ------------------------------------------------------------------------ | |
2c2d264b | 36 | * Controls |
c0efd232 LP |
37 | */ |
38 | ||
39 | static struct uvc_control_info uvc_ctrls[] = { | |
40 | { | |
41 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 42 | .selector = UVC_PU_BRIGHTNESS_CONTROL, |
c0efd232 LP |
43 | .index = 0, |
44 | .size = 2, | |
9eb30d2f LP |
45 | .flags = UVC_CTRL_FLAG_SET_CUR |
46 | | UVC_CTRL_FLAG_GET_RANGE | |
47 | | UVC_CTRL_FLAG_RESTORE, | |
c0efd232 LP |
48 | }, |
49 | { | |
50 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 51 | .selector = UVC_PU_CONTRAST_CONTROL, |
c0efd232 LP |
52 | .index = 1, |
53 | .size = 2, | |
9eb30d2f LP |
54 | .flags = UVC_CTRL_FLAG_SET_CUR |
55 | | UVC_CTRL_FLAG_GET_RANGE | |
56 | | UVC_CTRL_FLAG_RESTORE, | |
c0efd232 LP |
57 | }, |
58 | { | |
59 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 60 | .selector = UVC_PU_HUE_CONTROL, |
c0efd232 LP |
61 | .index = 2, |
62 | .size = 2, | |
9eb30d2f LP |
63 | .flags = UVC_CTRL_FLAG_SET_CUR |
64 | | UVC_CTRL_FLAG_GET_RANGE | |
65 | | UVC_CTRL_FLAG_RESTORE | |
66 | | UVC_CTRL_FLAG_AUTO_UPDATE, | |
c0efd232 LP |
67 | }, |
68 | { | |
69 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 70 | .selector = UVC_PU_SATURATION_CONTROL, |
c0efd232 LP |
71 | .index = 3, |
72 | .size = 2, | |
9eb30d2f LP |
73 | .flags = UVC_CTRL_FLAG_SET_CUR |
74 | | UVC_CTRL_FLAG_GET_RANGE | |
75 | | UVC_CTRL_FLAG_RESTORE, | |
c0efd232 LP |
76 | }, |
77 | { | |
78 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 79 | .selector = UVC_PU_SHARPNESS_CONTROL, |
c0efd232 LP |
80 | .index = 4, |
81 | .size = 2, | |
9eb30d2f LP |
82 | .flags = UVC_CTRL_FLAG_SET_CUR |
83 | | UVC_CTRL_FLAG_GET_RANGE | |
84 | | UVC_CTRL_FLAG_RESTORE, | |
c0efd232 LP |
85 | }, |
86 | { | |
87 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 88 | .selector = UVC_PU_GAMMA_CONTROL, |
c0efd232 LP |
89 | .index = 5, |
90 | .size = 2, | |
9eb30d2f LP |
91 | .flags = UVC_CTRL_FLAG_SET_CUR |
92 | | UVC_CTRL_FLAG_GET_RANGE | |
93 | | UVC_CTRL_FLAG_RESTORE, | |
c0efd232 | 94 | }, |
5e26d50f LP |
95 | { |
96 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 97 | .selector = UVC_PU_WHITE_BALANCE_TEMPERATURE_CONTROL, |
5e26d50f LP |
98 | .index = 6, |
99 | .size = 2, | |
9eb30d2f LP |
100 | .flags = UVC_CTRL_FLAG_SET_CUR |
101 | | UVC_CTRL_FLAG_GET_RANGE | |
102 | | UVC_CTRL_FLAG_RESTORE | |
103 | | UVC_CTRL_FLAG_AUTO_UPDATE, | |
5e26d50f LP |
104 | }, |
105 | { | |
106 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 107 | .selector = UVC_PU_WHITE_BALANCE_COMPONENT_CONTROL, |
5e26d50f LP |
108 | .index = 7, |
109 | .size = 4, | |
9eb30d2f LP |
110 | .flags = UVC_CTRL_FLAG_SET_CUR |
111 | | UVC_CTRL_FLAG_GET_RANGE | |
112 | | UVC_CTRL_FLAG_RESTORE | |
113 | | UVC_CTRL_FLAG_AUTO_UPDATE, | |
5e26d50f | 114 | }, |
c0efd232 LP |
115 | { |
116 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 117 | .selector = UVC_PU_BACKLIGHT_COMPENSATION_CONTROL, |
c0efd232 LP |
118 | .index = 8, |
119 | .size = 2, | |
9eb30d2f LP |
120 | .flags = UVC_CTRL_FLAG_SET_CUR |
121 | | UVC_CTRL_FLAG_GET_RANGE | |
122 | | UVC_CTRL_FLAG_RESTORE, | |
c0efd232 LP |
123 | }, |
124 | { | |
125 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 126 | .selector = UVC_PU_GAIN_CONTROL, |
c0efd232 LP |
127 | .index = 9, |
128 | .size = 2, | |
9eb30d2f LP |
129 | .flags = UVC_CTRL_FLAG_SET_CUR |
130 | | UVC_CTRL_FLAG_GET_RANGE | |
131 | | UVC_CTRL_FLAG_RESTORE, | |
c0efd232 LP |
132 | }, |
133 | { | |
134 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 135 | .selector = UVC_PU_POWER_LINE_FREQUENCY_CONTROL, |
c0efd232 LP |
136 | .index = 10, |
137 | .size = 1, | |
9eb30d2f LP |
138 | .flags = UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_CUR |
139 | | UVC_CTRL_FLAG_GET_DEF | UVC_CTRL_FLAG_RESTORE, | |
c0efd232 LP |
140 | }, |
141 | { | |
142 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 143 | .selector = UVC_PU_HUE_AUTO_CONTROL, |
c0efd232 LP |
144 | .index = 11, |
145 | .size = 1, | |
9eb30d2f LP |
146 | .flags = UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_CUR |
147 | | UVC_CTRL_FLAG_GET_DEF | UVC_CTRL_FLAG_RESTORE, | |
c0efd232 | 148 | }, |
5e26d50f LP |
149 | { |
150 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 151 | .selector = UVC_PU_WHITE_BALANCE_TEMPERATURE_AUTO_CONTROL, |
5e26d50f LP |
152 | .index = 12, |
153 | .size = 1, | |
9eb30d2f LP |
154 | .flags = UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_CUR |
155 | | UVC_CTRL_FLAG_GET_DEF | UVC_CTRL_FLAG_RESTORE, | |
5e26d50f LP |
156 | }, |
157 | { | |
158 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 159 | .selector = UVC_PU_WHITE_BALANCE_COMPONENT_AUTO_CONTROL, |
5e26d50f LP |
160 | .index = 13, |
161 | .size = 1, | |
9eb30d2f LP |
162 | .flags = UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_CUR |
163 | | UVC_CTRL_FLAG_GET_DEF | UVC_CTRL_FLAG_RESTORE, | |
5e26d50f LP |
164 | }, |
165 | { | |
166 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 167 | .selector = UVC_PU_DIGITAL_MULTIPLIER_CONTROL, |
5e26d50f LP |
168 | .index = 14, |
169 | .size = 2, | |
9eb30d2f LP |
170 | .flags = UVC_CTRL_FLAG_SET_CUR |
171 | | UVC_CTRL_FLAG_GET_RANGE | |
172 | | UVC_CTRL_FLAG_RESTORE, | |
5e26d50f LP |
173 | }, |
174 | { | |
175 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 176 | .selector = UVC_PU_DIGITAL_MULTIPLIER_LIMIT_CONTROL, |
5e26d50f LP |
177 | .index = 15, |
178 | .size = 2, | |
9eb30d2f LP |
179 | .flags = UVC_CTRL_FLAG_SET_CUR |
180 | | UVC_CTRL_FLAG_GET_RANGE | |
181 | | UVC_CTRL_FLAG_RESTORE, | |
5e26d50f LP |
182 | }, |
183 | { | |
184 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 185 | .selector = UVC_PU_ANALOG_VIDEO_STANDARD_CONTROL, |
5e26d50f LP |
186 | .index = 16, |
187 | .size = 1, | |
9eb30d2f | 188 | .flags = UVC_CTRL_FLAG_GET_CUR, |
5e26d50f LP |
189 | }, |
190 | { | |
191 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 192 | .selector = UVC_PU_ANALOG_LOCK_STATUS_CONTROL, |
5e26d50f LP |
193 | .index = 17, |
194 | .size = 1, | |
9eb30d2f | 195 | .flags = UVC_CTRL_FLAG_GET_CUR, |
5e26d50f LP |
196 | }, |
197 | { | |
198 | .entity = UVC_GUID_UVC_CAMERA, | |
b482d923 | 199 | .selector = UVC_CT_SCANNING_MODE_CONTROL, |
5e26d50f LP |
200 | .index = 0, |
201 | .size = 1, | |
9eb30d2f LP |
202 | .flags = UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_CUR |
203 | | UVC_CTRL_FLAG_RESTORE, | |
5e26d50f | 204 | }, |
c0efd232 LP |
205 | { |
206 | .entity = UVC_GUID_UVC_CAMERA, | |
b482d923 | 207 | .selector = UVC_CT_AE_MODE_CONTROL, |
c0efd232 LP |
208 | .index = 1, |
209 | .size = 1, | |
9eb30d2f LP |
210 | .flags = UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_CUR |
211 | | UVC_CTRL_FLAG_GET_DEF | UVC_CTRL_FLAG_GET_RES | |
212 | | UVC_CTRL_FLAG_RESTORE, | |
c0efd232 LP |
213 | }, |
214 | { | |
215 | .entity = UVC_GUID_UVC_CAMERA, | |
b482d923 | 216 | .selector = UVC_CT_AE_PRIORITY_CONTROL, |
c0efd232 LP |
217 | .index = 2, |
218 | .size = 1, | |
9eb30d2f LP |
219 | .flags = UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_CUR |
220 | | UVC_CTRL_FLAG_RESTORE, | |
c0efd232 LP |
221 | }, |
222 | { | |
223 | .entity = UVC_GUID_UVC_CAMERA, | |
b482d923 | 224 | .selector = UVC_CT_EXPOSURE_TIME_ABSOLUTE_CONTROL, |
c0efd232 LP |
225 | .index = 3, |
226 | .size = 4, | |
9eb30d2f LP |
227 | .flags = UVC_CTRL_FLAG_SET_CUR |
228 | | UVC_CTRL_FLAG_GET_RANGE | |
229 | | UVC_CTRL_FLAG_RESTORE, | |
c0efd232 | 230 | }, |
5e26d50f LP |
231 | { |
232 | .entity = UVC_GUID_UVC_CAMERA, | |
b482d923 | 233 | .selector = UVC_CT_EXPOSURE_TIME_RELATIVE_CONTROL, |
5e26d50f LP |
234 | .index = 4, |
235 | .size = 1, | |
9eb30d2f | 236 | .flags = UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_RESTORE, |
5e26d50f | 237 | }, |
c0efd232 LP |
238 | { |
239 | .entity = UVC_GUID_UVC_CAMERA, | |
b482d923 | 240 | .selector = UVC_CT_FOCUS_ABSOLUTE_CONTROL, |
c0efd232 LP |
241 | .index = 5, |
242 | .size = 2, | |
9eb30d2f LP |
243 | .flags = UVC_CTRL_FLAG_SET_CUR |
244 | | UVC_CTRL_FLAG_GET_RANGE | |
245 | | UVC_CTRL_FLAG_RESTORE | |
246 | | UVC_CTRL_FLAG_AUTO_UPDATE, | |
c0efd232 LP |
247 | }, |
248 | { | |
249 | .entity = UVC_GUID_UVC_CAMERA, | |
b482d923 | 250 | .selector = UVC_CT_FOCUS_RELATIVE_CONTROL, |
5e26d50f LP |
251 | .index = 6, |
252 | .size = 2, | |
9eb30d2f LP |
253 | .flags = UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_MIN |
254 | | UVC_CTRL_FLAG_GET_MAX | UVC_CTRL_FLAG_GET_RES | |
255 | | UVC_CTRL_FLAG_GET_DEF | |
256 | | UVC_CTRL_FLAG_AUTO_UPDATE, | |
c0efd232 LP |
257 | }, |
258 | { | |
5e26d50f | 259 | .entity = UVC_GUID_UVC_CAMERA, |
b482d923 | 260 | .selector = UVC_CT_IRIS_ABSOLUTE_CONTROL, |
5e26d50f LP |
261 | .index = 7, |
262 | .size = 2, | |
9eb30d2f LP |
263 | .flags = UVC_CTRL_FLAG_SET_CUR |
264 | | UVC_CTRL_FLAG_GET_RANGE | |
265 | | UVC_CTRL_FLAG_RESTORE | |
266 | | UVC_CTRL_FLAG_AUTO_UPDATE, | |
5e26d50f LP |
267 | }, |
268 | { | |
269 | .entity = UVC_GUID_UVC_CAMERA, | |
b482d923 | 270 | .selector = UVC_CT_IRIS_RELATIVE_CONTROL, |
5e26d50f | 271 | .index = 8, |
c0efd232 | 272 | .size = 1, |
9eb30d2f LP |
273 | .flags = UVC_CTRL_FLAG_SET_CUR |
274 | | UVC_CTRL_FLAG_AUTO_UPDATE, | |
c0efd232 LP |
275 | }, |
276 | { | |
5e26d50f | 277 | .entity = UVC_GUID_UVC_CAMERA, |
b482d923 | 278 | .selector = UVC_CT_ZOOM_ABSOLUTE_CONTROL, |
5e26d50f | 279 | .index = 9, |
c0efd232 | 280 | .size = 2, |
9eb30d2f LP |
281 | .flags = UVC_CTRL_FLAG_SET_CUR |
282 | | UVC_CTRL_FLAG_GET_RANGE | |
283 | | UVC_CTRL_FLAG_RESTORE | |
284 | | UVC_CTRL_FLAG_AUTO_UPDATE, | |
c0efd232 LP |
285 | }, |
286 | { | |
5e26d50f | 287 | .entity = UVC_GUID_UVC_CAMERA, |
b482d923 | 288 | .selector = UVC_CT_ZOOM_RELATIVE_CONTROL, |
5e26d50f LP |
289 | .index = 10, |
290 | .size = 3, | |
9eb30d2f LP |
291 | .flags = UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_MIN |
292 | | UVC_CTRL_FLAG_GET_MAX | UVC_CTRL_FLAG_GET_RES | |
293 | | UVC_CTRL_FLAG_GET_DEF | |
294 | | UVC_CTRL_FLAG_AUTO_UPDATE, | |
5e26d50f LP |
295 | }, |
296 | { | |
297 | .entity = UVC_GUID_UVC_CAMERA, | |
b482d923 | 298 | .selector = UVC_CT_PANTILT_ABSOLUTE_CONTROL, |
5e26d50f LP |
299 | .index = 11, |
300 | .size = 8, | |
9eb30d2f LP |
301 | .flags = UVC_CTRL_FLAG_SET_CUR |
302 | | UVC_CTRL_FLAG_GET_RANGE | |
303 | | UVC_CTRL_FLAG_RESTORE | |
304 | | UVC_CTRL_FLAG_AUTO_UPDATE, | |
5e26d50f LP |
305 | }, |
306 | { | |
307 | .entity = UVC_GUID_UVC_CAMERA, | |
b482d923 | 308 | .selector = UVC_CT_PANTILT_RELATIVE_CONTROL, |
5e26d50f LP |
309 | .index = 12, |
310 | .size = 4, | |
9eb30d2f LP |
311 | .flags = UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_MIN |
312 | | UVC_CTRL_FLAG_GET_MAX | UVC_CTRL_FLAG_GET_RES | |
313 | | UVC_CTRL_FLAG_GET_DEF | |
314 | | UVC_CTRL_FLAG_AUTO_UPDATE, | |
5e26d50f LP |
315 | }, |
316 | { | |
317 | .entity = UVC_GUID_UVC_CAMERA, | |
b482d923 | 318 | .selector = UVC_CT_ROLL_ABSOLUTE_CONTROL, |
c0efd232 | 319 | .index = 13, |
5e26d50f | 320 | .size = 2, |
9eb30d2f LP |
321 | .flags = UVC_CTRL_FLAG_SET_CUR |
322 | | UVC_CTRL_FLAG_GET_RANGE | |
323 | | UVC_CTRL_FLAG_RESTORE | |
324 | | UVC_CTRL_FLAG_AUTO_UPDATE, | |
5e26d50f LP |
325 | }, |
326 | { | |
327 | .entity = UVC_GUID_UVC_CAMERA, | |
b482d923 | 328 | .selector = UVC_CT_ROLL_RELATIVE_CONTROL, |
5e26d50f LP |
329 | .index = 14, |
330 | .size = 2, | |
9eb30d2f LP |
331 | .flags = UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_MIN |
332 | | UVC_CTRL_FLAG_GET_MAX | UVC_CTRL_FLAG_GET_RES | |
333 | | UVC_CTRL_FLAG_GET_DEF | |
334 | | UVC_CTRL_FLAG_AUTO_UPDATE, | |
5e26d50f LP |
335 | }, |
336 | { | |
337 | .entity = UVC_GUID_UVC_CAMERA, | |
b482d923 | 338 | .selector = UVC_CT_FOCUS_AUTO_CONTROL, |
5e26d50f | 339 | .index = 17, |
c0efd232 | 340 | .size = 1, |
9eb30d2f LP |
341 | .flags = UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_CUR |
342 | | UVC_CTRL_FLAG_GET_DEF | UVC_CTRL_FLAG_RESTORE, | |
c0efd232 LP |
343 | }, |
344 | { | |
5e26d50f | 345 | .entity = UVC_GUID_UVC_CAMERA, |
b482d923 | 346 | .selector = UVC_CT_PRIVACY_CONTROL, |
5e26d50f LP |
347 | .index = 18, |
348 | .size = 1, | |
9eb30d2f LP |
349 | .flags = UVC_CTRL_FLAG_SET_CUR | UVC_CTRL_FLAG_GET_CUR |
350 | | UVC_CTRL_FLAG_RESTORE | |
351 | | UVC_CTRL_FLAG_AUTO_UPDATE, | |
c0efd232 LP |
352 | }, |
353 | }; | |
354 | ||
355 | static struct uvc_menu_info power_line_frequency_controls[] = { | |
356 | { 0, "Disabled" }, | |
357 | { 1, "50 Hz" }, | |
358 | { 2, "60 Hz" }, | |
359 | }; | |
360 | ||
361 | static struct uvc_menu_info exposure_auto_controls[] = { | |
c0efd232 | 362 | { 2, "Auto Mode" }, |
90ac5ea3 | 363 | { 1, "Manual Mode" }, |
c0efd232 LP |
364 | { 4, "Shutter Priority Mode" }, |
365 | { 8, "Aperture Priority Mode" }, | |
366 | }; | |
367 | ||
9768352a LP |
368 | static __s32 uvc_ctrl_get_zoom(struct uvc_control_mapping *mapping, |
369 | __u8 query, const __u8 *data) | |
370 | { | |
371 | __s8 zoom = (__s8)data[0]; | |
372 | ||
373 | switch (query) { | |
b482d923 | 374 | case UVC_GET_CUR: |
9768352a LP |
375 | return (zoom == 0) ? 0 : (zoom > 0 ? data[2] : -data[2]); |
376 | ||
b482d923 LP |
377 | case UVC_GET_MIN: |
378 | case UVC_GET_MAX: | |
379 | case UVC_GET_RES: | |
380 | case UVC_GET_DEF: | |
9768352a LP |
381 | default: |
382 | return data[2]; | |
383 | } | |
384 | } | |
385 | ||
386 | static void uvc_ctrl_set_zoom(struct uvc_control_mapping *mapping, | |
387 | __s32 value, __u8 *data) | |
388 | { | |
389 | data[0] = value == 0 ? 0 : (value > 0) ? 1 : 0xff; | |
2e896133 | 390 | data[2] = min((int)abs(value), 0xff); |
9768352a LP |
391 | } |
392 | ||
c0efd232 LP |
393 | static struct uvc_control_mapping uvc_ctrl_mappings[] = { |
394 | { | |
395 | .id = V4L2_CID_BRIGHTNESS, | |
396 | .name = "Brightness", | |
397 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 398 | .selector = UVC_PU_BRIGHTNESS_CONTROL, |
c0efd232 LP |
399 | .size = 16, |
400 | .offset = 0, | |
401 | .v4l2_type = V4L2_CTRL_TYPE_INTEGER, | |
402 | .data_type = UVC_CTRL_DATA_TYPE_SIGNED, | |
403 | }, | |
404 | { | |
405 | .id = V4L2_CID_CONTRAST, | |
406 | .name = "Contrast", | |
407 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 408 | .selector = UVC_PU_CONTRAST_CONTROL, |
c0efd232 LP |
409 | .size = 16, |
410 | .offset = 0, | |
411 | .v4l2_type = V4L2_CTRL_TYPE_INTEGER, | |
412 | .data_type = UVC_CTRL_DATA_TYPE_UNSIGNED, | |
413 | }, | |
414 | { | |
415 | .id = V4L2_CID_HUE, | |
416 | .name = "Hue", | |
417 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 418 | .selector = UVC_PU_HUE_CONTROL, |
c0efd232 LP |
419 | .size = 16, |
420 | .offset = 0, | |
421 | .v4l2_type = V4L2_CTRL_TYPE_INTEGER, | |
422 | .data_type = UVC_CTRL_DATA_TYPE_SIGNED, | |
423 | }, | |
424 | { | |
425 | .id = V4L2_CID_SATURATION, | |
426 | .name = "Saturation", | |
427 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 428 | .selector = UVC_PU_SATURATION_CONTROL, |
c0efd232 LP |
429 | .size = 16, |
430 | .offset = 0, | |
431 | .v4l2_type = V4L2_CTRL_TYPE_INTEGER, | |
432 | .data_type = UVC_CTRL_DATA_TYPE_UNSIGNED, | |
433 | }, | |
434 | { | |
435 | .id = V4L2_CID_SHARPNESS, | |
436 | .name = "Sharpness", | |
437 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 438 | .selector = UVC_PU_SHARPNESS_CONTROL, |
c0efd232 LP |
439 | .size = 16, |
440 | .offset = 0, | |
441 | .v4l2_type = V4L2_CTRL_TYPE_INTEGER, | |
442 | .data_type = UVC_CTRL_DATA_TYPE_UNSIGNED, | |
443 | }, | |
444 | { | |
445 | .id = V4L2_CID_GAMMA, | |
446 | .name = "Gamma", | |
447 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 448 | .selector = UVC_PU_GAMMA_CONTROL, |
c0efd232 LP |
449 | .size = 16, |
450 | .offset = 0, | |
451 | .v4l2_type = V4L2_CTRL_TYPE_INTEGER, | |
452 | .data_type = UVC_CTRL_DATA_TYPE_UNSIGNED, | |
453 | }, | |
454 | { | |
455 | .id = V4L2_CID_BACKLIGHT_COMPENSATION, | |
456 | .name = "Backlight Compensation", | |
457 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 458 | .selector = UVC_PU_BACKLIGHT_COMPENSATION_CONTROL, |
c0efd232 LP |
459 | .size = 16, |
460 | .offset = 0, | |
461 | .v4l2_type = V4L2_CTRL_TYPE_INTEGER, | |
462 | .data_type = UVC_CTRL_DATA_TYPE_UNSIGNED, | |
463 | }, | |
464 | { | |
465 | .id = V4L2_CID_GAIN, | |
466 | .name = "Gain", | |
467 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 468 | .selector = UVC_PU_GAIN_CONTROL, |
c0efd232 LP |
469 | .size = 16, |
470 | .offset = 0, | |
471 | .v4l2_type = V4L2_CTRL_TYPE_INTEGER, | |
472 | .data_type = UVC_CTRL_DATA_TYPE_UNSIGNED, | |
473 | }, | |
474 | { | |
475 | .id = V4L2_CID_POWER_LINE_FREQUENCY, | |
476 | .name = "Power Line Frequency", | |
477 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 478 | .selector = UVC_PU_POWER_LINE_FREQUENCY_CONTROL, |
c0efd232 LP |
479 | .size = 2, |
480 | .offset = 0, | |
481 | .v4l2_type = V4L2_CTRL_TYPE_MENU, | |
482 | .data_type = UVC_CTRL_DATA_TYPE_ENUM, | |
483 | .menu_info = power_line_frequency_controls, | |
484 | .menu_count = ARRAY_SIZE(power_line_frequency_controls), | |
485 | }, | |
486 | { | |
487 | .id = V4L2_CID_HUE_AUTO, | |
488 | .name = "Hue, Auto", | |
489 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 490 | .selector = UVC_PU_HUE_AUTO_CONTROL, |
c0efd232 LP |
491 | .size = 1, |
492 | .offset = 0, | |
493 | .v4l2_type = V4L2_CTRL_TYPE_BOOLEAN, | |
494 | .data_type = UVC_CTRL_DATA_TYPE_BOOLEAN, | |
495 | }, | |
496 | { | |
497 | .id = V4L2_CID_EXPOSURE_AUTO, | |
498 | .name = "Exposure, Auto", | |
499 | .entity = UVC_GUID_UVC_CAMERA, | |
b482d923 | 500 | .selector = UVC_CT_AE_MODE_CONTROL, |
c0efd232 LP |
501 | .size = 4, |
502 | .offset = 0, | |
503 | .v4l2_type = V4L2_CTRL_TYPE_MENU, | |
504 | .data_type = UVC_CTRL_DATA_TYPE_BITMASK, | |
505 | .menu_info = exposure_auto_controls, | |
506 | .menu_count = ARRAY_SIZE(exposure_auto_controls), | |
507 | }, | |
508 | { | |
509 | .id = V4L2_CID_EXPOSURE_AUTO_PRIORITY, | |
510 | .name = "Exposure, Auto Priority", | |
511 | .entity = UVC_GUID_UVC_CAMERA, | |
b482d923 | 512 | .selector = UVC_CT_AE_PRIORITY_CONTROL, |
c0efd232 LP |
513 | .size = 1, |
514 | .offset = 0, | |
515 | .v4l2_type = V4L2_CTRL_TYPE_BOOLEAN, | |
516 | .data_type = UVC_CTRL_DATA_TYPE_BOOLEAN, | |
517 | }, | |
518 | { | |
519 | .id = V4L2_CID_EXPOSURE_ABSOLUTE, | |
520 | .name = "Exposure (Absolute)", | |
521 | .entity = UVC_GUID_UVC_CAMERA, | |
b482d923 | 522 | .selector = UVC_CT_EXPOSURE_TIME_ABSOLUTE_CONTROL, |
c0efd232 LP |
523 | .size = 32, |
524 | .offset = 0, | |
525 | .v4l2_type = V4L2_CTRL_TYPE_INTEGER, | |
526 | .data_type = UVC_CTRL_DATA_TYPE_UNSIGNED, | |
527 | }, | |
528 | { | |
529 | .id = V4L2_CID_AUTO_WHITE_BALANCE, | |
530 | .name = "White Balance Temperature, Auto", | |
531 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 532 | .selector = UVC_PU_WHITE_BALANCE_TEMPERATURE_AUTO_CONTROL, |
c0efd232 LP |
533 | .size = 1, |
534 | .offset = 0, | |
535 | .v4l2_type = V4L2_CTRL_TYPE_BOOLEAN, | |
536 | .data_type = UVC_CTRL_DATA_TYPE_BOOLEAN, | |
537 | }, | |
538 | { | |
539 | .id = V4L2_CID_WHITE_BALANCE_TEMPERATURE, | |
540 | .name = "White Balance Temperature", | |
541 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 542 | .selector = UVC_PU_WHITE_BALANCE_TEMPERATURE_CONTROL, |
c0efd232 LP |
543 | .size = 16, |
544 | .offset = 0, | |
545 | .v4l2_type = V4L2_CTRL_TYPE_INTEGER, | |
546 | .data_type = UVC_CTRL_DATA_TYPE_UNSIGNED, | |
547 | }, | |
548 | { | |
549 | .id = V4L2_CID_AUTO_WHITE_BALANCE, | |
550 | .name = "White Balance Component, Auto", | |
551 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 552 | .selector = UVC_PU_WHITE_BALANCE_COMPONENT_AUTO_CONTROL, |
c0efd232 LP |
553 | .size = 1, |
554 | .offset = 0, | |
555 | .v4l2_type = V4L2_CTRL_TYPE_BOOLEAN, | |
556 | .data_type = UVC_CTRL_DATA_TYPE_BOOLEAN, | |
557 | }, | |
558 | { | |
559 | .id = V4L2_CID_BLUE_BALANCE, | |
560 | .name = "White Balance Blue Component", | |
561 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 562 | .selector = UVC_PU_WHITE_BALANCE_COMPONENT_CONTROL, |
c0efd232 LP |
563 | .size = 16, |
564 | .offset = 0, | |
565 | .v4l2_type = V4L2_CTRL_TYPE_INTEGER, | |
566 | .data_type = UVC_CTRL_DATA_TYPE_SIGNED, | |
567 | }, | |
568 | { | |
569 | .id = V4L2_CID_RED_BALANCE, | |
570 | .name = "White Balance Red Component", | |
571 | .entity = UVC_GUID_UVC_PROCESSING, | |
b482d923 | 572 | .selector = UVC_PU_WHITE_BALANCE_COMPONENT_CONTROL, |
c0efd232 LP |
573 | .size = 16, |
574 | .offset = 16, | |
575 | .v4l2_type = V4L2_CTRL_TYPE_INTEGER, | |
576 | .data_type = UVC_CTRL_DATA_TYPE_SIGNED, | |
577 | }, | |
578 | { | |
579 | .id = V4L2_CID_FOCUS_ABSOLUTE, | |
580 | .name = "Focus (absolute)", | |
581 | .entity = UVC_GUID_UVC_CAMERA, | |
b482d923 | 582 | .selector = UVC_CT_FOCUS_ABSOLUTE_CONTROL, |
c0efd232 LP |
583 | .size = 16, |
584 | .offset = 0, | |
585 | .v4l2_type = V4L2_CTRL_TYPE_INTEGER, | |
586 | .data_type = UVC_CTRL_DATA_TYPE_UNSIGNED, | |
587 | }, | |
588 | { | |
589 | .id = V4L2_CID_FOCUS_AUTO, | |
590 | .name = "Focus, Auto", | |
591 | .entity = UVC_GUID_UVC_CAMERA, | |
b482d923 | 592 | .selector = UVC_CT_FOCUS_AUTO_CONTROL, |
c0efd232 LP |
593 | .size = 1, |
594 | .offset = 0, | |
595 | .v4l2_type = V4L2_CTRL_TYPE_BOOLEAN, | |
596 | .data_type = UVC_CTRL_DATA_TYPE_BOOLEAN, | |
597 | }, | |
35a00c41 LP |
598 | { |
599 | .id = V4L2_CID_IRIS_ABSOLUTE, | |
600 | .name = "Iris, Absolute", | |
601 | .entity = UVC_GUID_UVC_CAMERA, | |
602 | .selector = UVC_CT_IRIS_ABSOLUTE_CONTROL, | |
603 | .size = 16, | |
604 | .offset = 0, | |
605 | .v4l2_type = V4L2_CTRL_TYPE_INTEGER, | |
606 | .data_type = UVC_CTRL_DATA_TYPE_UNSIGNED, | |
607 | }, | |
608 | { | |
609 | .id = V4L2_CID_IRIS_RELATIVE, | |
610 | .name = "Iris, Relative", | |
611 | .entity = UVC_GUID_UVC_CAMERA, | |
612 | .selector = UVC_CT_IRIS_RELATIVE_CONTROL, | |
613 | .size = 8, | |
614 | .offset = 0, | |
615 | .v4l2_type = V4L2_CTRL_TYPE_INTEGER, | |
616 | .data_type = UVC_CTRL_DATA_TYPE_SIGNED, | |
617 | }, | |
9768352a LP |
618 | { |
619 | .id = V4L2_CID_ZOOM_ABSOLUTE, | |
620 | .name = "Zoom, Absolute", | |
621 | .entity = UVC_GUID_UVC_CAMERA, | |
b482d923 | 622 | .selector = UVC_CT_ZOOM_ABSOLUTE_CONTROL, |
9768352a LP |
623 | .size = 16, |
624 | .offset = 0, | |
625 | .v4l2_type = V4L2_CTRL_TYPE_INTEGER, | |
626 | .data_type = UVC_CTRL_DATA_TYPE_UNSIGNED, | |
627 | }, | |
628 | { | |
629 | .id = V4L2_CID_ZOOM_CONTINUOUS, | |
630 | .name = "Zoom, Continuous", | |
631 | .entity = UVC_GUID_UVC_CAMERA, | |
b482d923 | 632 | .selector = UVC_CT_ZOOM_RELATIVE_CONTROL, |
9768352a LP |
633 | .size = 0, |
634 | .offset = 0, | |
635 | .v4l2_type = V4L2_CTRL_TYPE_INTEGER, | |
636 | .data_type = UVC_CTRL_DATA_TYPE_SIGNED, | |
637 | .get = uvc_ctrl_get_zoom, | |
638 | .set = uvc_ctrl_set_zoom, | |
639 | }, | |
e56be916 MR |
640 | { |
641 | .id = V4L2_CID_PAN_ABSOLUTE, | |
642 | .name = "Pan (Absolute)", | |
643 | .entity = UVC_GUID_UVC_CAMERA, | |
644 | .selector = UVC_CT_PANTILT_ABSOLUTE_CONTROL, | |
645 | .size = 32, | |
646 | .offset = 0, | |
647 | .v4l2_type = V4L2_CTRL_TYPE_INTEGER, | |
648 | .data_type = UVC_CTRL_DATA_TYPE_UNSIGNED, | |
649 | }, | |
650 | { | |
651 | .id = V4L2_CID_TILT_ABSOLUTE, | |
652 | .name = "Tilt (Absolute)", | |
653 | .entity = UVC_GUID_UVC_CAMERA, | |
654 | .selector = UVC_CT_PANTILT_ABSOLUTE_CONTROL, | |
655 | .size = 32, | |
656 | .offset = 32, | |
657 | .v4l2_type = V4L2_CTRL_TYPE_INTEGER, | |
658 | .data_type = UVC_CTRL_DATA_TYPE_UNSIGNED, | |
659 | }, | |
6df126f8 LP |
660 | { |
661 | .id = V4L2_CID_PRIVACY, | |
662 | .name = "Privacy", | |
663 | .entity = UVC_GUID_UVC_CAMERA, | |
b482d923 | 664 | .selector = UVC_CT_PRIVACY_CONTROL, |
6df126f8 LP |
665 | .size = 1, |
666 | .offset = 0, | |
667 | .v4l2_type = V4L2_CTRL_TYPE_BOOLEAN, | |
668 | .data_type = UVC_CTRL_DATA_TYPE_BOOLEAN, | |
669 | }, | |
c0efd232 LP |
670 | }; |
671 | ||
672 | /* ------------------------------------------------------------------------ | |
673 | * Utility functions | |
674 | */ | |
675 | ||
676 | static inline __u8 *uvc_ctrl_data(struct uvc_control *ctrl, int id) | |
677 | { | |
071c8bb8 | 678 | return ctrl->uvc_data + id * ctrl->info.size; |
c0efd232 LP |
679 | } |
680 | ||
2bdd29cf | 681 | static inline int uvc_test_bit(const __u8 *data, int bit) |
c0efd232 LP |
682 | { |
683 | return (data[bit >> 3] >> (bit & 7)) & 1; | |
684 | } | |
685 | ||
2bdd29cf LP |
686 | static inline void uvc_clear_bit(__u8 *data, int bit) |
687 | { | |
688 | data[bit >> 3] &= ~(1 << (bit & 7)); | |
689 | } | |
690 | ||
c0efd232 LP |
691 | /* Extract the bit string specified by mapping->offset and mapping->size |
692 | * from the little-endian data stored at 'data' and return the result as | |
693 | * a signed 32bit integer. Sign extension will be performed if the mapping | |
694 | * references a signed data type. | |
695 | */ | |
9768352a LP |
696 | static __s32 uvc_get_le_value(struct uvc_control_mapping *mapping, |
697 | __u8 query, const __u8 *data) | |
c0efd232 LP |
698 | { |
699 | int bits = mapping->size; | |
700 | int offset = mapping->offset; | |
701 | __s32 value = 0; | |
702 | __u8 mask; | |
703 | ||
704 | data += offset / 8; | |
705 | offset &= 7; | |
706 | mask = ((1LL << bits) - 1) << offset; | |
707 | ||
708 | for (; bits > 0; data++) { | |
709 | __u8 byte = *data & mask; | |
710 | value |= offset > 0 ? (byte >> offset) : (byte << (-offset)); | |
711 | bits -= 8 - (offset > 0 ? offset : 0); | |
712 | offset -= 8; | |
713 | mask = (1 << bits) - 1; | |
714 | } | |
715 | ||
2c2d264b | 716 | /* Sign-extend the value if needed. */ |
c0efd232 LP |
717 | if (mapping->data_type == UVC_CTRL_DATA_TYPE_SIGNED) |
718 | value |= -(value & (1 << (mapping->size - 1))); | |
719 | ||
720 | return value; | |
721 | } | |
722 | ||
723 | /* Set the bit string specified by mapping->offset and mapping->size | |
724 | * in the little-endian data stored at 'data' to the value 'value'. | |
725 | */ | |
9768352a LP |
726 | static void uvc_set_le_value(struct uvc_control_mapping *mapping, |
727 | __s32 value, __u8 *data) | |
c0efd232 LP |
728 | { |
729 | int bits = mapping->size; | |
730 | int offset = mapping->offset; | |
731 | __u8 mask; | |
732 | ||
3653639e HG |
733 | /* According to the v4l2 spec, writing any value to a button control |
734 | * should result in the action belonging to the button control being | |
735 | * triggered. UVC devices however want to see a 1 written -> override | |
736 | * value. | |
737 | */ | |
738 | if (mapping->v4l2_type == V4L2_CTRL_TYPE_BUTTON) | |
739 | value = -1; | |
740 | ||
c0efd232 LP |
741 | data += offset / 8; |
742 | offset &= 7; | |
743 | ||
744 | for (; bits > 0; data++) { | |
745 | mask = ((1LL << bits) - 1) << offset; | |
746 | *data = (*data & ~mask) | ((value << offset) & mask); | |
747 | value >>= offset ? offset : 8; | |
748 | bits -= 8 - offset; | |
749 | offset = 0; | |
750 | } | |
751 | } | |
752 | ||
753 | /* ------------------------------------------------------------------------ | |
754 | * Terminal and unit management | |
755 | */ | |
756 | ||
757 | static const __u8 uvc_processing_guid[16] = UVC_GUID_UVC_PROCESSING; | |
758 | static const __u8 uvc_camera_guid[16] = UVC_GUID_UVC_CAMERA; | |
759 | static const __u8 uvc_media_transport_input_guid[16] = | |
760 | UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT; | |
761 | ||
f9d81df9 LP |
762 | static int uvc_entity_match_guid(const struct uvc_entity *entity, |
763 | const __u8 guid[16]) | |
c0efd232 LP |
764 | { |
765 | switch (UVC_ENTITY_TYPE(entity)) { | |
b482d923 | 766 | case UVC_ITT_CAMERA: |
c0efd232 LP |
767 | return memcmp(uvc_camera_guid, guid, 16) == 0; |
768 | ||
b482d923 | 769 | case UVC_ITT_MEDIA_TRANSPORT_INPUT: |
c0efd232 LP |
770 | return memcmp(uvc_media_transport_input_guid, guid, 16) == 0; |
771 | ||
b482d923 | 772 | case UVC_VC_PROCESSING_UNIT: |
c0efd232 LP |
773 | return memcmp(uvc_processing_guid, guid, 16) == 0; |
774 | ||
b482d923 | 775 | case UVC_VC_EXTENSION_UNIT: |
c0efd232 LP |
776 | return memcmp(entity->extension.guidExtensionCode, |
777 | guid, 16) == 0; | |
778 | ||
779 | default: | |
780 | return 0; | |
781 | } | |
782 | } | |
783 | ||
784 | /* ------------------------------------------------------------------------ | |
785 | * UVC Controls | |
786 | */ | |
787 | ||
788 | static void __uvc_find_control(struct uvc_entity *entity, __u32 v4l2_id, | |
789 | struct uvc_control_mapping **mapping, struct uvc_control **control, | |
790 | int next) | |
791 | { | |
792 | struct uvc_control *ctrl; | |
793 | struct uvc_control_mapping *map; | |
794 | unsigned int i; | |
795 | ||
796 | if (entity == NULL) | |
797 | return; | |
798 | ||
799 | for (i = 0; i < entity->ncontrols; ++i) { | |
800 | ctrl = &entity->controls[i]; | |
071c8bb8 | 801 | if (!ctrl->initialized) |
c0efd232 LP |
802 | continue; |
803 | ||
071c8bb8 | 804 | list_for_each_entry(map, &ctrl->info.mappings, list) { |
c0efd232 LP |
805 | if ((map->id == v4l2_id) && !next) { |
806 | *control = ctrl; | |
807 | *mapping = map; | |
808 | return; | |
809 | } | |
810 | ||
811 | if ((*mapping == NULL || (*mapping)->id > map->id) && | |
812 | (map->id > v4l2_id) && next) { | |
813 | *control = ctrl; | |
814 | *mapping = map; | |
815 | } | |
816 | } | |
817 | } | |
818 | } | |
819 | ||
23d9f3ef | 820 | static struct uvc_control *uvc_find_control(struct uvc_video_chain *chain, |
c0efd232 LP |
821 | __u32 v4l2_id, struct uvc_control_mapping **mapping) |
822 | { | |
823 | struct uvc_control *ctrl = NULL; | |
824 | struct uvc_entity *entity; | |
825 | int next = v4l2_id & V4L2_CTRL_FLAG_NEXT_CTRL; | |
826 | ||
827 | *mapping = NULL; | |
828 | ||
829 | /* Mask the query flags. */ | |
830 | v4l2_id &= V4L2_CTRL_ID_MASK; | |
831 | ||
832 | /* Find the control. */ | |
6241d8ca | 833 | list_for_each_entry(entity, &chain->entities, chain) { |
c0efd232 LP |
834 | __uvc_find_control(entity, v4l2_id, mapping, &ctrl, next); |
835 | if (ctrl && !next) | |
836 | return ctrl; | |
837 | } | |
838 | ||
839 | if (ctrl == NULL && !next) | |
840 | uvc_trace(UVC_TRACE_CONTROL, "Control 0x%08x not found.\n", | |
841 | v4l2_id); | |
842 | ||
843 | return ctrl; | |
844 | } | |
845 | ||
59529081 LP |
846 | static int uvc_ctrl_populate_cache(struct uvc_video_chain *chain, |
847 | struct uvc_control *ctrl) | |
848 | { | |
849 | int ret; | |
850 | ||
9eb30d2f | 851 | if (ctrl->info.flags & UVC_CTRL_FLAG_GET_DEF) { |
59529081 | 852 | ret = uvc_query_ctrl(chain->dev, UVC_GET_DEF, ctrl->entity->id, |
071c8bb8 | 853 | chain->dev->intfnum, ctrl->info.selector, |
59529081 | 854 | uvc_ctrl_data(ctrl, UVC_CTRL_DATA_DEF), |
071c8bb8 | 855 | ctrl->info.size); |
59529081 LP |
856 | if (ret < 0) |
857 | return ret; | |
858 | } | |
859 | ||
9eb30d2f | 860 | if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MIN) { |
59529081 | 861 | ret = uvc_query_ctrl(chain->dev, UVC_GET_MIN, ctrl->entity->id, |
071c8bb8 | 862 | chain->dev->intfnum, ctrl->info.selector, |
59529081 | 863 | uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MIN), |
071c8bb8 | 864 | ctrl->info.size); |
59529081 LP |
865 | if (ret < 0) |
866 | return ret; | |
867 | } | |
9eb30d2f | 868 | if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MAX) { |
59529081 | 869 | ret = uvc_query_ctrl(chain->dev, UVC_GET_MAX, ctrl->entity->id, |
071c8bb8 | 870 | chain->dev->intfnum, ctrl->info.selector, |
59529081 | 871 | uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MAX), |
071c8bb8 | 872 | ctrl->info.size); |
59529081 LP |
873 | if (ret < 0) |
874 | return ret; | |
875 | } | |
9eb30d2f | 876 | if (ctrl->info.flags & UVC_CTRL_FLAG_GET_RES) { |
59529081 | 877 | ret = uvc_query_ctrl(chain->dev, UVC_GET_RES, ctrl->entity->id, |
071c8bb8 | 878 | chain->dev->intfnum, ctrl->info.selector, |
59529081 | 879 | uvc_ctrl_data(ctrl, UVC_CTRL_DATA_RES), |
071c8bb8 | 880 | ctrl->info.size); |
59529081 LP |
881 | if (ret < 0) |
882 | return ret; | |
883 | } | |
884 | ||
885 | ctrl->cached = 1; | |
886 | return 0; | |
887 | } | |
888 | ||
8e113595 | 889 | int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain, |
c0efd232 LP |
890 | struct v4l2_queryctrl *v4l2_ctrl) |
891 | { | |
892 | struct uvc_control *ctrl; | |
893 | struct uvc_control_mapping *mapping; | |
894 | struct uvc_menu_info *menu; | |
895 | unsigned int i; | |
c0efd232 LP |
896 | int ret; |
897 | ||
27a61c13 LP |
898 | ret = mutex_lock_interruptible(&chain->ctrl_mutex); |
899 | if (ret < 0) | |
900 | return -ERESTARTSYS; | |
901 | ||
8e113595 | 902 | ctrl = uvc_find_control(chain, v4l2_ctrl->id, &mapping); |
27a61c13 LP |
903 | if (ctrl == NULL) { |
904 | ret = -EINVAL; | |
905 | goto done; | |
906 | } | |
c0efd232 | 907 | |
54812c77 | 908 | memset(v4l2_ctrl, 0, sizeof *v4l2_ctrl); |
c0efd232 LP |
909 | v4l2_ctrl->id = mapping->id; |
910 | v4l2_ctrl->type = mapping->v4l2_type; | |
d0ebf307 | 911 | strlcpy(v4l2_ctrl->name, mapping->name, sizeof v4l2_ctrl->name); |
c0efd232 LP |
912 | v4l2_ctrl->flags = 0; |
913 | ||
9eb30d2f | 914 | if (!(ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR)) |
a90ef69c | 915 | v4l2_ctrl->flags |= V4L2_CTRL_FLAG_WRITE_ONLY; |
9eb30d2f | 916 | if (!(ctrl->info.flags & UVC_CTRL_FLAG_SET_CUR)) |
c0efd232 LP |
917 | v4l2_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; |
918 | ||
59529081 LP |
919 | if (!ctrl->cached) { |
920 | ret = uvc_ctrl_populate_cache(chain, ctrl); | |
b482d923 | 921 | if (ret < 0) |
27a61c13 | 922 | goto done; |
59529081 LP |
923 | } |
924 | ||
9eb30d2f | 925 | if (ctrl->info.flags & UVC_CTRL_FLAG_GET_DEF) { |
59529081 LP |
926 | v4l2_ctrl->default_value = mapping->get(mapping, UVC_GET_DEF, |
927 | uvc_ctrl_data(ctrl, UVC_CTRL_DATA_DEF)); | |
c0efd232 LP |
928 | } |
929 | ||
54812c77 LP |
930 | switch (mapping->v4l2_type) { |
931 | case V4L2_CTRL_TYPE_MENU: | |
c0efd232 LP |
932 | v4l2_ctrl->minimum = 0; |
933 | v4l2_ctrl->maximum = mapping->menu_count - 1; | |
934 | v4l2_ctrl->step = 1; | |
935 | ||
936 | menu = mapping->menu_info; | |
937 | for (i = 0; i < mapping->menu_count; ++i, ++menu) { | |
938 | if (menu->value == v4l2_ctrl->default_value) { | |
939 | v4l2_ctrl->default_value = i; | |
940 | break; | |
941 | } | |
942 | } | |
943 | ||
27a61c13 | 944 | goto done; |
54812c77 LP |
945 | |
946 | case V4L2_CTRL_TYPE_BOOLEAN: | |
947 | v4l2_ctrl->minimum = 0; | |
948 | v4l2_ctrl->maximum = 1; | |
949 | v4l2_ctrl->step = 1; | |
27a61c13 | 950 | goto done; |
54812c77 | 951 | |
f4eabafe LP |
952 | case V4L2_CTRL_TYPE_BUTTON: |
953 | v4l2_ctrl->minimum = 0; | |
954 | v4l2_ctrl->maximum = 0; | |
955 | v4l2_ctrl->step = 0; | |
27a61c13 | 956 | goto done; |
f4eabafe | 957 | |
54812c77 LP |
958 | default: |
959 | break; | |
c0efd232 LP |
960 | } |
961 | ||
9eb30d2f | 962 | if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MIN) |
59529081 LP |
963 | v4l2_ctrl->minimum = mapping->get(mapping, UVC_GET_MIN, |
964 | uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MIN)); | |
c0efd232 | 965 | |
9eb30d2f | 966 | if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MAX) |
59529081 LP |
967 | v4l2_ctrl->maximum = mapping->get(mapping, UVC_GET_MAX, |
968 | uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MAX)); | |
969 | ||
9eb30d2f | 970 | if (ctrl->info.flags & UVC_CTRL_FLAG_GET_RES) |
59529081 LP |
971 | v4l2_ctrl->step = mapping->get(mapping, UVC_GET_RES, |
972 | uvc_ctrl_data(ctrl, UVC_CTRL_DATA_RES)); | |
973 | ||
27a61c13 LP |
974 | done: |
975 | mutex_unlock(&chain->ctrl_mutex); | |
976 | return ret; | |
c0efd232 LP |
977 | } |
978 | ||
23d9f3ef LP |
979 | /* |
980 | * Mapping V4L2 controls to UVC controls can be straighforward if done well. | |
981 | * Most of the UVC controls exist in V4L2, and can be mapped directly. Some | |
982 | * must be grouped (for instance the Red Balance, Blue Balance and Do White | |
983 | * Balance V4L2 controls use the White Balance Component UVC control) or | |
984 | * otherwise translated. The approach we take here is to use a translation | |
985 | * table for the controls that can be mapped directly, and handle the others | |
986 | * manually. | |
987 | */ | |
988 | int uvc_query_v4l2_menu(struct uvc_video_chain *chain, | |
989 | struct v4l2_querymenu *query_menu) | |
990 | { | |
991 | struct uvc_menu_info *menu_info; | |
992 | struct uvc_control_mapping *mapping; | |
993 | struct uvc_control *ctrl; | |
994 | u32 index = query_menu->index; | |
995 | u32 id = query_menu->id; | |
996 | int ret; | |
997 | ||
998 | memset(query_menu, 0, sizeof(*query_menu)); | |
999 | query_menu->id = id; | |
1000 | query_menu->index = index; | |
1001 | ||
1002 | ret = mutex_lock_interruptible(&chain->ctrl_mutex); | |
1003 | if (ret < 0) | |
1004 | return -ERESTARTSYS; | |
1005 | ||
1006 | ctrl = uvc_find_control(chain, query_menu->id, &mapping); | |
1007 | if (ctrl == NULL || mapping->v4l2_type != V4L2_CTRL_TYPE_MENU) { | |
1008 | ret = -EINVAL; | |
1009 | goto done; | |
1010 | } | |
1011 | ||
1012 | if (query_menu->index >= mapping->menu_count) { | |
1013 | ret = -EINVAL; | |
1014 | goto done; | |
1015 | } | |
1016 | ||
1017 | menu_info = &mapping->menu_info[query_menu->index]; | |
fc2d573f LP |
1018 | |
1019 | if (ctrl->info.flags & UVC_CTRL_FLAG_GET_RES) { | |
1020 | s32 bitmap; | |
1021 | ||
1022 | if (!ctrl->cached) { | |
1023 | ret = uvc_ctrl_populate_cache(chain, ctrl); | |
1024 | if (ret < 0) | |
1025 | goto done; | |
1026 | } | |
1027 | ||
1028 | bitmap = mapping->get(mapping, UVC_GET_RES, | |
1029 | uvc_ctrl_data(ctrl, UVC_CTRL_DATA_RES)); | |
1030 | if (!(bitmap & menu_info->value)) { | |
1031 | ret = -EINVAL; | |
1032 | goto done; | |
1033 | } | |
1034 | } | |
1035 | ||
23d9f3ef LP |
1036 | strlcpy(query_menu->name, menu_info->name, sizeof query_menu->name); |
1037 | ||
1038 | done: | |
1039 | mutex_unlock(&chain->ctrl_mutex); | |
1040 | return ret; | |
1041 | } | |
1042 | ||
c0efd232 LP |
1043 | |
1044 | /* -------------------------------------------------------------------------- | |
1045 | * Control transactions | |
1046 | * | |
1047 | * To make extended set operations as atomic as the hardware allows, controls | |
1048 | * are handled using begin/commit/rollback operations. | |
1049 | * | |
1050 | * At the beginning of a set request, uvc_ctrl_begin should be called to | |
1051 | * initialize the request. This function acquires the control lock. | |
1052 | * | |
1053 | * When setting a control, the new value is stored in the control data field | |
1054 | * at position UVC_CTRL_DATA_CURRENT. The control is then marked as dirty for | |
1055 | * later processing. If the UVC and V4L2 control sizes differ, the current | |
1056 | * value is loaded from the hardware before storing the new value in the data | |
1057 | * field. | |
1058 | * | |
1059 | * After processing all controls in the transaction, uvc_ctrl_commit or | |
1060 | * uvc_ctrl_rollback must be called to apply the pending changes to the | |
1061 | * hardware or revert them. When applying changes, all controls marked as | |
1062 | * dirty will be modified in the UVC device, and the dirty flag will be | |
1063 | * cleared. When reverting controls, the control data field | |
1064 | * UVC_CTRL_DATA_CURRENT is reverted to its previous value | |
1065 | * (UVC_CTRL_DATA_BACKUP) for all dirty controls. Both functions release the | |
1066 | * control lock. | |
1067 | */ | |
8e113595 | 1068 | int uvc_ctrl_begin(struct uvc_video_chain *chain) |
c0efd232 | 1069 | { |
8e113595 | 1070 | return mutex_lock_interruptible(&chain->ctrl_mutex) ? -ERESTARTSYS : 0; |
c0efd232 LP |
1071 | } |
1072 | ||
1073 | static int uvc_ctrl_commit_entity(struct uvc_device *dev, | |
1074 | struct uvc_entity *entity, int rollback) | |
1075 | { | |
1076 | struct uvc_control *ctrl; | |
1077 | unsigned int i; | |
1078 | int ret; | |
1079 | ||
1080 | if (entity == NULL) | |
1081 | return 0; | |
1082 | ||
1083 | for (i = 0; i < entity->ncontrols; ++i) { | |
1084 | ctrl = &entity->controls[i]; | |
071c8bb8 | 1085 | if (!ctrl->initialized) |
b1accfa1 LP |
1086 | continue; |
1087 | ||
1088 | /* Reset the loaded flag for auto-update controls that were | |
1089 | * marked as loaded in uvc_ctrl_get/uvc_ctrl_set to prevent | |
1090 | * uvc_ctrl_get from using the cached value. | |
1091 | */ | |
9eb30d2f | 1092 | if (ctrl->info.flags & UVC_CTRL_FLAG_AUTO_UPDATE) |
b1accfa1 LP |
1093 | ctrl->loaded = 0; |
1094 | ||
1095 | if (!ctrl->dirty) | |
c0efd232 LP |
1096 | continue; |
1097 | ||
1098 | if (!rollback) | |
b482d923 | 1099 | ret = uvc_query_ctrl(dev, UVC_SET_CUR, ctrl->entity->id, |
071c8bb8 | 1100 | dev->intfnum, ctrl->info.selector, |
c0efd232 | 1101 | uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT), |
071c8bb8 | 1102 | ctrl->info.size); |
c0efd232 LP |
1103 | else |
1104 | ret = 0; | |
1105 | ||
1106 | if (rollback || ret < 0) | |
1107 | memcpy(uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT), | |
1108 | uvc_ctrl_data(ctrl, UVC_CTRL_DATA_BACKUP), | |
071c8bb8 | 1109 | ctrl->info.size); |
c0efd232 | 1110 | |
c0efd232 LP |
1111 | ctrl->dirty = 0; |
1112 | ||
1113 | if (ret < 0) | |
1114 | return ret; | |
1115 | } | |
1116 | ||
1117 | return 0; | |
1118 | } | |
1119 | ||
8e113595 | 1120 | int __uvc_ctrl_commit(struct uvc_video_chain *chain, int rollback) |
c0efd232 LP |
1121 | { |
1122 | struct uvc_entity *entity; | |
1123 | int ret = 0; | |
1124 | ||
1125 | /* Find the control. */ | |
6241d8ca | 1126 | list_for_each_entry(entity, &chain->entities, chain) { |
8e113595 | 1127 | ret = uvc_ctrl_commit_entity(chain->dev, entity, rollback); |
c0efd232 LP |
1128 | if (ret < 0) |
1129 | goto done; | |
1130 | } | |
1131 | ||
1132 | done: | |
8e113595 | 1133 | mutex_unlock(&chain->ctrl_mutex); |
c0efd232 LP |
1134 | return ret; |
1135 | } | |
1136 | ||
8e113595 | 1137 | int uvc_ctrl_get(struct uvc_video_chain *chain, |
c0efd232 LP |
1138 | struct v4l2_ext_control *xctrl) |
1139 | { | |
1140 | struct uvc_control *ctrl; | |
1141 | struct uvc_control_mapping *mapping; | |
1142 | struct uvc_menu_info *menu; | |
1143 | unsigned int i; | |
1144 | int ret; | |
1145 | ||
8e113595 | 1146 | ctrl = uvc_find_control(chain, xctrl->id, &mapping); |
9eb30d2f | 1147 | if (ctrl == NULL || (ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR) == 0) |
c0efd232 LP |
1148 | return -EINVAL; |
1149 | ||
1150 | if (!ctrl->loaded) { | |
8e113595 | 1151 | ret = uvc_query_ctrl(chain->dev, UVC_GET_CUR, ctrl->entity->id, |
071c8bb8 | 1152 | chain->dev->intfnum, ctrl->info.selector, |
c0efd232 | 1153 | uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT), |
071c8bb8 | 1154 | ctrl->info.size); |
c0efd232 LP |
1155 | if (ret < 0) |
1156 | return ret; | |
1157 | ||
b1accfa1 | 1158 | ctrl->loaded = 1; |
c0efd232 LP |
1159 | } |
1160 | ||
b482d923 | 1161 | xctrl->value = mapping->get(mapping, UVC_GET_CUR, |
9768352a | 1162 | uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT)); |
c0efd232 LP |
1163 | |
1164 | if (mapping->v4l2_type == V4L2_CTRL_TYPE_MENU) { | |
1165 | menu = mapping->menu_info; | |
1166 | for (i = 0; i < mapping->menu_count; ++i, ++menu) { | |
1167 | if (menu->value == xctrl->value) { | |
1168 | xctrl->value = i; | |
1169 | break; | |
1170 | } | |
1171 | } | |
1172 | } | |
1173 | ||
1174 | return 0; | |
1175 | } | |
1176 | ||
8e113595 | 1177 | int uvc_ctrl_set(struct uvc_video_chain *chain, |
c0efd232 LP |
1178 | struct v4l2_ext_control *xctrl) |
1179 | { | |
1180 | struct uvc_control *ctrl; | |
1181 | struct uvc_control_mapping *mapping; | |
e54532e5 LP |
1182 | s32 value; |
1183 | u32 step; | |
1184 | s32 min; | |
1185 | s32 max; | |
c0efd232 LP |
1186 | int ret; |
1187 | ||
8e113595 | 1188 | ctrl = uvc_find_control(chain, xctrl->id, &mapping); |
9eb30d2f | 1189 | if (ctrl == NULL || (ctrl->info.flags & UVC_CTRL_FLAG_SET_CUR) == 0) |
c0efd232 LP |
1190 | return -EINVAL; |
1191 | ||
e54532e5 LP |
1192 | /* Clamp out of range values. */ |
1193 | switch (mapping->v4l2_type) { | |
1194 | case V4L2_CTRL_TYPE_INTEGER: | |
1195 | if (!ctrl->cached) { | |
1196 | ret = uvc_ctrl_populate_cache(chain, ctrl); | |
1197 | if (ret < 0) | |
1198 | return ret; | |
1199 | } | |
1200 | ||
1201 | min = mapping->get(mapping, UVC_GET_MIN, | |
1202 | uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MIN)); | |
1203 | max = mapping->get(mapping, UVC_GET_MAX, | |
1204 | uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MAX)); | |
1205 | step = mapping->get(mapping, UVC_GET_RES, | |
1206 | uvc_ctrl_data(ctrl, UVC_CTRL_DATA_RES)); | |
cf7a50ee LP |
1207 | if (step == 0) |
1208 | step = 1; | |
e54532e5 LP |
1209 | |
1210 | xctrl->value = min + (xctrl->value - min + step/2) / step * step; | |
1211 | xctrl->value = clamp(xctrl->value, min, max); | |
1212 | value = xctrl->value; | |
1213 | break; | |
1214 | ||
1215 | case V4L2_CTRL_TYPE_BOOLEAN: | |
1216 | xctrl->value = clamp(xctrl->value, 0, 1); | |
1217 | value = xctrl->value; | |
1218 | break; | |
1219 | ||
1220 | case V4L2_CTRL_TYPE_MENU: | |
1221 | if (xctrl->value < 0 || xctrl->value >= mapping->menu_count) | |
8a4e76c1 | 1222 | return -ERANGE; |
e54532e5 | 1223 | value = mapping->menu_info[xctrl->value].value; |
f411f103 LP |
1224 | |
1225 | /* Valid menu indices are reported by the GET_RES request for | |
1226 | * UVC controls that support it. | |
1227 | */ | |
1228 | if (ctrl->info.flags & UVC_CTRL_FLAG_GET_RES) { | |
1229 | if (!ctrl->cached) { | |
1230 | ret = uvc_ctrl_populate_cache(chain, ctrl); | |
1231 | if (ret < 0) | |
1232 | return ret; | |
1233 | } | |
1234 | ||
1235 | step = mapping->get(mapping, UVC_GET_RES, | |
1236 | uvc_ctrl_data(ctrl, UVC_CTRL_DATA_RES)); | |
1237 | if (!(step & value)) | |
1238 | return -ERANGE; | |
1239 | } | |
1240 | ||
e54532e5 LP |
1241 | break; |
1242 | ||
1243 | default: | |
1244 | value = xctrl->value; | |
1245 | break; | |
c0efd232 LP |
1246 | } |
1247 | ||
e54532e5 LP |
1248 | /* If the mapping doesn't span the whole UVC control, the current value |
1249 | * needs to be loaded from the device to perform the read-modify-write | |
1250 | * operation. | |
1251 | */ | |
071c8bb8 | 1252 | if (!ctrl->loaded && (ctrl->info.size * 8) != mapping->size) { |
9eb30d2f | 1253 | if ((ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR) == 0) { |
c0efd232 | 1254 | memset(uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT), |
071c8bb8 | 1255 | 0, ctrl->info.size); |
c0efd232 | 1256 | } else { |
8e113595 LP |
1257 | ret = uvc_query_ctrl(chain->dev, UVC_GET_CUR, |
1258 | ctrl->entity->id, chain->dev->intfnum, | |
071c8bb8 | 1259 | ctrl->info.selector, |
c0efd232 | 1260 | uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT), |
071c8bb8 | 1261 | ctrl->info.size); |
c0efd232 LP |
1262 | if (ret < 0) |
1263 | return ret; | |
1264 | } | |
1265 | ||
b1accfa1 | 1266 | ctrl->loaded = 1; |
c0efd232 LP |
1267 | } |
1268 | ||
e54532e5 | 1269 | /* Backup the current value in case we need to rollback later. */ |
c0efd232 LP |
1270 | if (!ctrl->dirty) { |
1271 | memcpy(uvc_ctrl_data(ctrl, UVC_CTRL_DATA_BACKUP), | |
1272 | uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT), | |
071c8bb8 | 1273 | ctrl->info.size); |
c0efd232 LP |
1274 | } |
1275 | ||
9768352a LP |
1276 | mapping->set(mapping, value, |
1277 | uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT)); | |
c0efd232 LP |
1278 | |
1279 | ctrl->dirty = 1; | |
1280 | ctrl->modified = 1; | |
1281 | return 0; | |
1282 | } | |
1283 | ||
1284 | /* -------------------------------------------------------------------------- | |
1285 | * Dynamic controls | |
1286 | */ | |
1287 | ||
b5977a58 LP |
1288 | static void uvc_ctrl_fixup_xu_info(struct uvc_device *dev, |
1289 | const struct uvc_control *ctrl, struct uvc_control_info *info) | |
1290 | { | |
1291 | struct uvc_ctrl_fixup { | |
1292 | struct usb_device_id id; | |
1293 | u8 entity; | |
1294 | u8 selector; | |
1295 | u8 flags; | |
1296 | }; | |
1297 | ||
1298 | static const struct uvc_ctrl_fixup fixups[] = { | |
1299 | { { USB_DEVICE(0x046d, 0x08c2) }, 9, 1, | |
9eb30d2f LP |
1300 | UVC_CTRL_FLAG_GET_MIN | UVC_CTRL_FLAG_GET_MAX | |
1301 | UVC_CTRL_FLAG_GET_DEF | UVC_CTRL_FLAG_SET_CUR | | |
1302 | UVC_CTRL_FLAG_AUTO_UPDATE }, | |
b5977a58 | 1303 | { { USB_DEVICE(0x046d, 0x08cc) }, 9, 1, |
9eb30d2f LP |
1304 | UVC_CTRL_FLAG_GET_MIN | UVC_CTRL_FLAG_GET_MAX | |
1305 | UVC_CTRL_FLAG_GET_DEF | UVC_CTRL_FLAG_SET_CUR | | |
1306 | UVC_CTRL_FLAG_AUTO_UPDATE }, | |
b5977a58 | 1307 | { { USB_DEVICE(0x046d, 0x0994) }, 9, 1, |
9eb30d2f LP |
1308 | UVC_CTRL_FLAG_GET_MIN | UVC_CTRL_FLAG_GET_MAX | |
1309 | UVC_CTRL_FLAG_GET_DEF | UVC_CTRL_FLAG_SET_CUR | | |
1310 | UVC_CTRL_FLAG_AUTO_UPDATE }, | |
b5977a58 LP |
1311 | }; |
1312 | ||
1313 | unsigned int i; | |
1314 | ||
1315 | for (i = 0; i < ARRAY_SIZE(fixups); ++i) { | |
1316 | if (!usb_match_one_id(dev->intf, &fixups[i].id)) | |
1317 | continue; | |
1318 | ||
1319 | if (fixups[i].entity == ctrl->entity->id && | |
1320 | fixups[i].selector == info->selector) { | |
1321 | info->flags = fixups[i].flags; | |
1322 | return; | |
1323 | } | |
1324 | } | |
1325 | } | |
1326 | ||
52c58ad6 LP |
1327 | /* |
1328 | * Query control information (size and flags) for XU controls. | |
1329 | */ | |
1330 | static int uvc_ctrl_fill_xu_info(struct uvc_device *dev, | |
1331 | const struct uvc_control *ctrl, struct uvc_control_info *info) | |
1332 | { | |
1333 | u8 *data; | |
1334 | int ret; | |
1335 | ||
1336 | data = kmalloc(2, GFP_KERNEL); | |
1337 | if (data == NULL) | |
1338 | return -ENOMEM; | |
1339 | ||
1340 | memcpy(info->entity, ctrl->entity->extension.guidExtensionCode, | |
1341 | sizeof(info->entity)); | |
1342 | info->index = ctrl->index; | |
1343 | info->selector = ctrl->index + 1; | |
1344 | ||
1345 | /* Query and verify the control length (GET_LEN) */ | |
1346 | ret = uvc_query_ctrl(dev, UVC_GET_LEN, ctrl->entity->id, dev->intfnum, | |
1347 | info->selector, data, 2); | |
1348 | if (ret < 0) { | |
1349 | uvc_trace(UVC_TRACE_CONTROL, | |
1350 | "GET_LEN failed on control %pUl/%u (%d).\n", | |
1351 | info->entity, info->selector, ret); | |
1352 | goto done; | |
1353 | } | |
1354 | ||
1355 | info->size = le16_to_cpup((__le16 *)data); | |
1356 | ||
1357 | /* Query the control information (GET_INFO) */ | |
1358 | ret = uvc_query_ctrl(dev, UVC_GET_INFO, ctrl->entity->id, dev->intfnum, | |
1359 | info->selector, data, 1); | |
1360 | if (ret < 0) { | |
1361 | uvc_trace(UVC_TRACE_CONTROL, | |
1362 | "GET_INFO failed on control %pUl/%u (%d).\n", | |
1363 | info->entity, info->selector, ret); | |
1364 | goto done; | |
1365 | } | |
1366 | ||
9eb30d2f LP |
1367 | info->flags = UVC_CTRL_FLAG_GET_MIN | UVC_CTRL_FLAG_GET_MAX |
1368 | | UVC_CTRL_FLAG_GET_RES | UVC_CTRL_FLAG_GET_DEF | |
1369 | | (data[0] & UVC_CONTROL_CAP_GET ? | |
1370 | UVC_CTRL_FLAG_GET_CUR : 0) | |
1371 | | (data[0] & UVC_CONTROL_CAP_SET ? | |
1372 | UVC_CTRL_FLAG_SET_CUR : 0) | |
52c58ad6 | 1373 | | (data[0] & UVC_CONTROL_CAP_AUTOUPDATE ? |
9eb30d2f | 1374 | UVC_CTRL_FLAG_AUTO_UPDATE : 0); |
52c58ad6 | 1375 | |
b5977a58 LP |
1376 | uvc_ctrl_fixup_xu_info(dev, ctrl, info); |
1377 | ||
52c58ad6 LP |
1378 | uvc_trace(UVC_TRACE_CONTROL, "XU control %pUl/%u queried: len %u, " |
1379 | "flags { get %u set %u auto %u }.\n", | |
1380 | info->entity, info->selector, info->size, | |
9eb30d2f LP |
1381 | (info->flags & UVC_CTRL_FLAG_GET_CUR) ? 1 : 0, |
1382 | (info->flags & UVC_CTRL_FLAG_SET_CUR) ? 1 : 0, | |
1383 | (info->flags & UVC_CTRL_FLAG_AUTO_UPDATE) ? 1 : 0); | |
52c58ad6 LP |
1384 | |
1385 | done: | |
1386 | kfree(data); | |
1387 | return ret; | |
1388 | } | |
1389 | ||
1390 | static int uvc_ctrl_add_info(struct uvc_device *dev, struct uvc_control *ctrl, | |
1391 | const struct uvc_control_info *info); | |
1392 | ||
1393 | static int uvc_ctrl_init_xu_ctrl(struct uvc_device *dev, | |
1394 | struct uvc_control *ctrl) | |
1395 | { | |
1396 | struct uvc_control_info info; | |
1397 | int ret; | |
1398 | ||
1399 | if (ctrl->initialized) | |
1400 | return 0; | |
1401 | ||
1402 | ret = uvc_ctrl_fill_xu_info(dev, ctrl, &info); | |
1403 | if (ret < 0) | |
1404 | return ret; | |
1405 | ||
1406 | ret = uvc_ctrl_add_info(dev, ctrl, &info); | |
1407 | if (ret < 0) | |
1408 | uvc_trace(UVC_TRACE_CONTROL, "Failed to initialize control " | |
1409 | "%pUl/%u on device %s entity %u\n", info.entity, | |
1410 | info.selector, dev->udev->devpath, ctrl->entity->id); | |
1411 | ||
1412 | return ret; | |
1413 | } | |
1414 | ||
8e113595 | 1415 | int uvc_xu_ctrl_query(struct uvc_video_chain *chain, |
fe78d187 | 1416 | struct uvc_xu_control_query *xqry) |
c0efd232 LP |
1417 | { |
1418 | struct uvc_entity *entity; | |
fe78d187 | 1419 | struct uvc_control *ctrl; |
c0efd232 | 1420 | unsigned int i, found = 0; |
fe78d187 MR |
1421 | __u32 reqflags; |
1422 | __u16 size; | |
1423 | __u8 *data = NULL; | |
c0efd232 LP |
1424 | int ret; |
1425 | ||
1426 | /* Find the extension unit. */ | |
6241d8ca LP |
1427 | list_for_each_entry(entity, &chain->entities, chain) { |
1428 | if (UVC_ENTITY_TYPE(entity) == UVC_VC_EXTENSION_UNIT && | |
fe78d187 | 1429 | entity->id == xqry->unit) |
c0efd232 LP |
1430 | break; |
1431 | } | |
1432 | ||
fe78d187 | 1433 | if (entity->id != xqry->unit) { |
c0efd232 | 1434 | uvc_trace(UVC_TRACE_CONTROL, "Extension unit %u not found.\n", |
fe78d187 MR |
1435 | xqry->unit); |
1436 | return -ENOENT; | |
c0efd232 LP |
1437 | } |
1438 | ||
52c58ad6 | 1439 | /* Find the control and perform delayed initialization if needed. */ |
c0efd232 LP |
1440 | for (i = 0; i < entity->ncontrols; ++i) { |
1441 | ctrl = &entity->controls[i]; | |
fe78d187 | 1442 | if (ctrl->index == xqry->selector - 1) { |
c0efd232 LP |
1443 | found = 1; |
1444 | break; | |
1445 | } | |
1446 | } | |
1447 | ||
1448 | if (!found) { | |
36bd883e | 1449 | uvc_trace(UVC_TRACE_CONTROL, "Control %pUl/%u not found.\n", |
fe78d187 MR |
1450 | entity->extension.guidExtensionCode, xqry->selector); |
1451 | return -ENOENT; | |
c0efd232 LP |
1452 | } |
1453 | ||
27a61c13 LP |
1454 | if (mutex_lock_interruptible(&chain->ctrl_mutex)) |
1455 | return -ERESTARTSYS; | |
1456 | ||
52c58ad6 | 1457 | ret = uvc_ctrl_init_xu_ctrl(chain->dev, ctrl); |
27a61c13 LP |
1458 | if (ret < 0) { |
1459 | ret = -ENOENT; | |
1460 | goto done; | |
1461 | } | |
52c58ad6 | 1462 | |
fe78d187 MR |
1463 | /* Validate the required buffer size and flags for the request */ |
1464 | reqflags = 0; | |
1465 | size = ctrl->info.size; | |
1466 | ||
1467 | switch (xqry->query) { | |
1468 | case UVC_GET_CUR: | |
9eb30d2f | 1469 | reqflags = UVC_CTRL_FLAG_GET_CUR; |
fe78d187 MR |
1470 | break; |
1471 | case UVC_GET_MIN: | |
9eb30d2f | 1472 | reqflags = UVC_CTRL_FLAG_GET_MIN; |
fe78d187 MR |
1473 | break; |
1474 | case UVC_GET_MAX: | |
9eb30d2f | 1475 | reqflags = UVC_CTRL_FLAG_GET_MAX; |
fe78d187 MR |
1476 | break; |
1477 | case UVC_GET_DEF: | |
9eb30d2f | 1478 | reqflags = UVC_CTRL_FLAG_GET_DEF; |
fe78d187 MR |
1479 | break; |
1480 | case UVC_GET_RES: | |
9eb30d2f | 1481 | reqflags = UVC_CTRL_FLAG_GET_RES; |
fe78d187 MR |
1482 | break; |
1483 | case UVC_SET_CUR: | |
9eb30d2f | 1484 | reqflags = UVC_CTRL_FLAG_SET_CUR; |
fe78d187 MR |
1485 | break; |
1486 | case UVC_GET_LEN: | |
1487 | size = 2; | |
1488 | break; | |
1489 | case UVC_GET_INFO: | |
1490 | size = 1; | |
1491 | break; | |
1492 | default: | |
27a61c13 LP |
1493 | ret = -EINVAL; |
1494 | goto done; | |
1495 | } | |
c0efd232 | 1496 | |
fe78d187 MR |
1497 | if (size != xqry->size) { |
1498 | ret = -ENOBUFS; | |
27a61c13 LP |
1499 | goto done; |
1500 | } | |
c0efd232 | 1501 | |
fe78d187 MR |
1502 | if (reqflags && !(ctrl->info.flags & reqflags)) { |
1503 | ret = -EBADRQC; | |
1504 | goto done; | |
1505 | } | |
1506 | ||
1507 | data = kmalloc(size, GFP_KERNEL); | |
1508 | if (data == NULL) { | |
1509 | ret = -ENOMEM; | |
1510 | goto done; | |
1511 | } | |
c0efd232 | 1512 | |
fe78d187 MR |
1513 | if (xqry->query == UVC_SET_CUR && |
1514 | copy_from_user(data, xqry->data, size)) { | |
c0efd232 | 1515 | ret = -EFAULT; |
27a61c13 | 1516 | goto done; |
c0efd232 LP |
1517 | } |
1518 | ||
fe78d187 MR |
1519 | ret = uvc_query_ctrl(chain->dev, xqry->query, xqry->unit, |
1520 | chain->dev->intfnum, xqry->selector, data, size); | |
c0efd232 | 1521 | if (ret < 0) |
27a61c13 | 1522 | goto done; |
c0efd232 | 1523 | |
fe78d187 MR |
1524 | if (xqry->query != UVC_SET_CUR && |
1525 | copy_to_user(xqry->data, data, size)) | |
c0efd232 | 1526 | ret = -EFAULT; |
27a61c13 | 1527 | done: |
fe78d187 | 1528 | kfree(data); |
8e113595 | 1529 | mutex_unlock(&chain->ctrl_mutex); |
c0efd232 LP |
1530 | return ret; |
1531 | } | |
1532 | ||
1533 | /* -------------------------------------------------------------------------- | |
1534 | * Suspend/resume | |
1535 | */ | |
1536 | ||
1537 | /* | |
1538 | * Restore control values after resume, skipping controls that haven't been | |
1539 | * changed. | |
1540 | * | |
1541 | * TODO | |
1542 | * - Don't restore modified controls that are back to their default value. | |
1543 | * - Handle restore order (Auto-Exposure Mode should be restored before | |
1544 | * Exposure Time). | |
1545 | */ | |
1546 | int uvc_ctrl_resume_device(struct uvc_device *dev) | |
1547 | { | |
1548 | struct uvc_control *ctrl; | |
1549 | struct uvc_entity *entity; | |
1550 | unsigned int i; | |
1551 | int ret; | |
1552 | ||
1553 | /* Walk the entities list and restore controls when possible. */ | |
1554 | list_for_each_entry(entity, &dev->entities, list) { | |
1555 | ||
1556 | for (i = 0; i < entity->ncontrols; ++i) { | |
1557 | ctrl = &entity->controls[i]; | |
1558 | ||
071c8bb8 | 1559 | if (!ctrl->initialized || !ctrl->modified || |
9eb30d2f | 1560 | (ctrl->info.flags & UVC_CTRL_FLAG_RESTORE) == 0) |
c0efd232 LP |
1561 | continue; |
1562 | ||
36bd883e | 1563 | printk(KERN_INFO "restoring control %pUl/%u/%u\n", |
071c8bb8 LP |
1564 | ctrl->info.entity, ctrl->info.index, |
1565 | ctrl->info.selector); | |
c0efd232 LP |
1566 | ctrl->dirty = 1; |
1567 | } | |
1568 | ||
1569 | ret = uvc_ctrl_commit_entity(dev, entity, 0); | |
1570 | if (ret < 0) | |
1571 | return ret; | |
1572 | } | |
1573 | ||
1574 | return 0; | |
1575 | } | |
1576 | ||
1577 | /* -------------------------------------------------------------------------- | |
1578 | * Control and mapping handling | |
1579 | */ | |
1580 | ||
ba2fa996 LP |
1581 | /* |
1582 | * Add control information to a given control. | |
1583 | */ | |
1584 | static int uvc_ctrl_add_info(struct uvc_device *dev, struct uvc_control *ctrl, | |
1585 | const struct uvc_control_info *info) | |
1586 | { | |
1587 | int ret = 0; | |
c0efd232 | 1588 | |
071c8bb8 LP |
1589 | memcpy(&ctrl->info, info, sizeof(*info)); |
1590 | INIT_LIST_HEAD(&ctrl->info.mappings); | |
ba2fa996 LP |
1591 | |
1592 | /* Allocate an array to save control values (cur, def, max, etc.) */ | |
071c8bb8 | 1593 | ctrl->uvc_data = kzalloc(ctrl->info.size * UVC_CTRL_DATA_LAST + 1, |
ba2fa996 LP |
1594 | GFP_KERNEL); |
1595 | if (ctrl->uvc_data == NULL) { | |
1596 | ret = -ENOMEM; | |
1597 | goto done; | |
c0efd232 | 1598 | } |
b30ece53 | 1599 | |
071c8bb8 LP |
1600 | ctrl->initialized = 1; |
1601 | ||
36bd883e | 1602 | uvc_trace(UVC_TRACE_CONTROL, "Added control %pUl/%u to device %s " |
071c8bb8 | 1603 | "entity %u\n", ctrl->info.entity, ctrl->info.selector, |
ba2fa996 | 1604 | dev->udev->devpath, ctrl->entity->id); |
b30ece53 LP |
1605 | |
1606 | done: | |
071c8bb8 | 1607 | if (ret < 0) |
ba2fa996 | 1608 | kfree(ctrl->uvc_data); |
b30ece53 | 1609 | return ret; |
c0efd232 LP |
1610 | } |
1611 | ||
1612 | /* | |
ba2fa996 | 1613 | * Add a control mapping to a given control. |
c0efd232 | 1614 | */ |
ba2fa996 LP |
1615 | static int __uvc_ctrl_add_mapping(struct uvc_device *dev, |
1616 | struct uvc_control *ctrl, const struct uvc_control_mapping *mapping) | |
c0efd232 | 1617 | { |
ba2fa996 LP |
1618 | struct uvc_control_mapping *map; |
1619 | unsigned int size; | |
c0efd232 | 1620 | |
ba2fa996 LP |
1621 | /* Most mappings come from static kernel data and need to be duplicated. |
1622 | * Mappings that come from userspace will be unnecessarily duplicated, | |
1623 | * this could be optimized. | |
c0efd232 | 1624 | */ |
ba2fa996 LP |
1625 | map = kmemdup(mapping, sizeof(*mapping), GFP_KERNEL); |
1626 | if (map == NULL) | |
1627 | return -ENOMEM; | |
c0efd232 | 1628 | |
ba2fa996 LP |
1629 | size = sizeof(*mapping->menu_info) * mapping->menu_count; |
1630 | map->menu_info = kmemdup(mapping->menu_info, size, GFP_KERNEL); | |
1631 | if (map->menu_info == NULL) { | |
1632 | kfree(map); | |
1633 | return -ENOMEM; | |
c0efd232 LP |
1634 | } |
1635 | ||
ba2fa996 LP |
1636 | if (map->get == NULL) |
1637 | map->get = uvc_get_le_value; | |
1638 | if (map->set == NULL) | |
1639 | map->set = uvc_set_le_value; | |
c0efd232 | 1640 | |
071c8bb8 LP |
1641 | map->ctrl = &ctrl->info; |
1642 | list_add_tail(&map->list, &ctrl->info.mappings); | |
ba2fa996 LP |
1643 | uvc_trace(UVC_TRACE_CONTROL, |
1644 | "Adding mapping '%s' to control %pUl/%u.\n", | |
071c8bb8 | 1645 | map->name, ctrl->info.entity, ctrl->info.selector); |
ba2fa996 LP |
1646 | |
1647 | return 0; | |
c0efd232 LP |
1648 | } |
1649 | ||
ba2fa996 LP |
1650 | int uvc_ctrl_add_mapping(struct uvc_video_chain *chain, |
1651 | const struct uvc_control_mapping *mapping) | |
c0efd232 | 1652 | { |
ba2fa996 | 1653 | struct uvc_device *dev = chain->dev; |
c0efd232 | 1654 | struct uvc_control_mapping *map; |
ba2fa996 LP |
1655 | struct uvc_entity *entity; |
1656 | struct uvc_control *ctrl; | |
1657 | int found = 0; | |
8fb91b33 | 1658 | int ret; |
9768352a | 1659 | |
c0efd232 | 1660 | if (mapping->id & ~V4L2_CTRL_ID_MASK) { |
ba2fa996 | 1661 | uvc_trace(UVC_TRACE_CONTROL, "Can't add mapping '%s', control " |
52c58ad6 | 1662 | "id 0x%08x is invalid.\n", mapping->name, |
c0efd232 LP |
1663 | mapping->id); |
1664 | return -EINVAL; | |
1665 | } | |
1666 | ||
ba2fa996 LP |
1667 | /* Search for the matching (GUID/CS) control in the given device */ |
1668 | list_for_each_entry(entity, &dev->entities, list) { | |
1669 | unsigned int i; | |
c0efd232 | 1670 | |
52c58ad6 LP |
1671 | if (UVC_ENTITY_TYPE(entity) != UVC_VC_EXTENSION_UNIT || |
1672 | !uvc_entity_match_guid(entity, mapping->entity)) | |
ba2fa996 | 1673 | continue; |
c0efd232 | 1674 | |
ba2fa996 LP |
1675 | for (i = 0; i < entity->ncontrols; ++i) { |
1676 | ctrl = &entity->controls[i]; | |
52c58ad6 | 1677 | if (ctrl->index == mapping->selector - 1) { |
ba2fa996 LP |
1678 | found = 1; |
1679 | break; | |
c0efd232 LP |
1680 | } |
1681 | } | |
1682 | ||
ba2fa996 LP |
1683 | if (found) |
1684 | break; | |
1685 | } | |
1686 | if (!found) | |
1687 | return -ENOENT; | |
c0efd232 | 1688 | |
ba2fa996 LP |
1689 | if (mutex_lock_interruptible(&chain->ctrl_mutex)) |
1690 | return -ERESTARTSYS; | |
1691 | ||
52c58ad6 LP |
1692 | /* Perform delayed initialization of XU controls */ |
1693 | ret = uvc_ctrl_init_xu_ctrl(dev, ctrl); | |
1694 | if (ret < 0) { | |
1695 | ret = -ENOENT; | |
1696 | goto done; | |
1697 | } | |
1698 | ||
071c8bb8 | 1699 | list_for_each_entry(map, &ctrl->info.mappings, list) { |
ba2fa996 LP |
1700 | if (mapping->id == map->id) { |
1701 | uvc_trace(UVC_TRACE_CONTROL, "Can't add mapping '%s', " | |
1702 | "control id 0x%08x already exists.\n", | |
1703 | mapping->name, mapping->id); | |
1704 | ret = -EEXIST; | |
1705 | goto done; | |
1706 | } | |
c0efd232 | 1707 | } |
ba2fa996 | 1708 | |
8fb91b33 MR |
1709 | /* Prevent excess memory consumption */ |
1710 | if (atomic_inc_return(&dev->nmappings) > UVC_MAX_CONTROL_MAPPINGS) { | |
1711 | atomic_dec(&dev->nmappings); | |
1712 | uvc_trace(UVC_TRACE_CONTROL, "Can't add mapping '%s', maximum " | |
1713 | "mappings count (%u) exceeded.\n", mapping->name, | |
1714 | UVC_MAX_CONTROL_MAPPINGS); | |
1715 | ret = -ENOMEM; | |
1716 | goto done; | |
1717 | } | |
1718 | ||
ba2fa996 | 1719 | ret = __uvc_ctrl_add_mapping(dev, ctrl, mapping); |
8fb91b33 MR |
1720 | if (ret < 0) |
1721 | atomic_dec(&dev->nmappings); | |
1722 | ||
ba2fa996 LP |
1723 | done: |
1724 | mutex_unlock(&chain->ctrl_mutex); | |
c0efd232 LP |
1725 | return ret; |
1726 | } | |
1727 | ||
2bdd29cf | 1728 | /* |
d732c44c LP |
1729 | * Prune an entity of its bogus controls using a blacklist. Bogus controls |
1730 | * are currently the ones that crash the camera or unconditionally return an | |
1731 | * error when queried. | |
2bdd29cf | 1732 | */ |
ba2fa996 LP |
1733 | static void uvc_ctrl_prune_entity(struct uvc_device *dev, |
1734 | struct uvc_entity *entity) | |
2bdd29cf | 1735 | { |
fa34168b | 1736 | struct uvc_ctrl_blacklist { |
d732c44c LP |
1737 | struct usb_device_id id; |
1738 | u8 index; | |
fa34168b LP |
1739 | }; |
1740 | ||
1741 | static const struct uvc_ctrl_blacklist processing_blacklist[] = { | |
9405e3cb | 1742 | { { USB_DEVICE(0x13d3, 0x509b) }, 9 }, /* Gain */ |
d732c44c LP |
1743 | { { USB_DEVICE(0x1c4f, 0x3000) }, 6 }, /* WB Temperature */ |
1744 | { { USB_DEVICE(0x5986, 0x0241) }, 2 }, /* Hue */ | |
2bdd29cf | 1745 | }; |
fa34168b LP |
1746 | static const struct uvc_ctrl_blacklist camera_blacklist[] = { |
1747 | { { USB_DEVICE(0x06f8, 0x3005) }, 9 }, /* Zoom, Absolute */ | |
1748 | }; | |
2bdd29cf | 1749 | |
fa34168b | 1750 | const struct uvc_ctrl_blacklist *blacklist; |
2bdd29cf | 1751 | unsigned int size; |
fa34168b | 1752 | unsigned int count; |
2bdd29cf | 1753 | unsigned int i; |
fa34168b | 1754 | u8 *controls; |
2bdd29cf | 1755 | |
fa34168b LP |
1756 | switch (UVC_ENTITY_TYPE(entity)) { |
1757 | case UVC_VC_PROCESSING_UNIT: | |
1758 | blacklist = processing_blacklist; | |
1759 | count = ARRAY_SIZE(processing_blacklist); | |
1760 | controls = entity->processing.bmControls; | |
1761 | size = entity->processing.bControlSize; | |
1762 | break; | |
1763 | ||
1764 | case UVC_ITT_CAMERA: | |
1765 | blacklist = camera_blacklist; | |
1766 | count = ARRAY_SIZE(camera_blacklist); | |
1767 | controls = entity->camera.bmControls; | |
1768 | size = entity->camera.bControlSize; | |
1769 | break; | |
2bdd29cf | 1770 | |
fa34168b LP |
1771 | default: |
1772 | return; | |
1773 | } | |
2bdd29cf | 1774 | |
fa34168b | 1775 | for (i = 0; i < count; ++i) { |
385097e0 | 1776 | if (!usb_match_one_id(dev->intf, &blacklist[i].id)) |
2bdd29cf LP |
1777 | continue; |
1778 | ||
d732c44c LP |
1779 | if (blacklist[i].index >= 8 * size || |
1780 | !uvc_test_bit(controls, blacklist[i].index)) | |
2bdd29cf LP |
1781 | continue; |
1782 | ||
d732c44c LP |
1783 | uvc_trace(UVC_TRACE_CONTROL, "%u/%u control is black listed, " |
1784 | "removing it.\n", entity->id, blacklist[i].index); | |
2bdd29cf | 1785 | |
d732c44c | 1786 | uvc_clear_bit(controls, blacklist[i].index); |
2bdd29cf LP |
1787 | } |
1788 | } | |
1789 | ||
ba2fa996 LP |
1790 | /* |
1791 | * Add control information and hardcoded stock control mappings to the given | |
1792 | * device. | |
1793 | */ | |
1794 | static void uvc_ctrl_init_ctrl(struct uvc_device *dev, struct uvc_control *ctrl) | |
1795 | { | |
1796 | const struct uvc_control_info *info = uvc_ctrls; | |
1797 | const struct uvc_control_info *iend = info + ARRAY_SIZE(uvc_ctrls); | |
1798 | const struct uvc_control_mapping *mapping = uvc_ctrl_mappings; | |
1799 | const struct uvc_control_mapping *mend = | |
1800 | mapping + ARRAY_SIZE(uvc_ctrl_mappings); | |
1801 | ||
52c58ad6 LP |
1802 | /* XU controls initialization requires querying the device for control |
1803 | * information. As some buggy UVC devices will crash when queried | |
1804 | * repeatedly in a tight loop, delay XU controls initialization until | |
1805 | * first use. | |
1806 | */ | |
1807 | if (UVC_ENTITY_TYPE(ctrl->entity) == UVC_VC_EXTENSION_UNIT) | |
ba2fa996 | 1808 | return; |
ba2fa996 LP |
1809 | |
1810 | for (; info < iend; ++info) { | |
1811 | if (uvc_entity_match_guid(ctrl->entity, info->entity) && | |
1812 | ctrl->index == info->index) { | |
1813 | uvc_ctrl_add_info(dev, ctrl, info); | |
1814 | break; | |
1815 | } | |
1816 | } | |
1817 | ||
071c8bb8 | 1818 | if (!ctrl->initialized) |
ba2fa996 LP |
1819 | return; |
1820 | ||
1821 | for (; mapping < mend; ++mapping) { | |
1822 | if (uvc_entity_match_guid(ctrl->entity, mapping->entity) && | |
071c8bb8 | 1823 | ctrl->info.selector == mapping->selector) |
ba2fa996 LP |
1824 | __uvc_ctrl_add_mapping(dev, ctrl, mapping); |
1825 | } | |
1826 | } | |
1827 | ||
c0efd232 LP |
1828 | /* |
1829 | * Initialize device controls. | |
1830 | */ | |
1831 | int uvc_ctrl_init_device(struct uvc_device *dev) | |
1832 | { | |
c0efd232 LP |
1833 | struct uvc_entity *entity; |
1834 | unsigned int i; | |
1835 | ||
1836 | /* Walk the entities list and instantiate controls */ | |
1837 | list_for_each_entry(entity, &dev->entities, list) { | |
ba2fa996 | 1838 | struct uvc_control *ctrl; |
c0efd232 LP |
1839 | unsigned int bControlSize = 0, ncontrols = 0; |
1840 | __u8 *bmControls = NULL; | |
1841 | ||
b482d923 | 1842 | if (UVC_ENTITY_TYPE(entity) == UVC_VC_EXTENSION_UNIT) { |
c0efd232 LP |
1843 | bmControls = entity->extension.bmControls; |
1844 | bControlSize = entity->extension.bControlSize; | |
b482d923 | 1845 | } else if (UVC_ENTITY_TYPE(entity) == UVC_VC_PROCESSING_UNIT) { |
c0efd232 LP |
1846 | bmControls = entity->processing.bmControls; |
1847 | bControlSize = entity->processing.bControlSize; | |
b482d923 | 1848 | } else if (UVC_ENTITY_TYPE(entity) == UVC_ITT_CAMERA) { |
c0efd232 LP |
1849 | bmControls = entity->camera.bmControls; |
1850 | bControlSize = entity->camera.bControlSize; | |
1851 | } | |
1852 | ||
ba2fa996 | 1853 | /* Remove bogus/blacklisted controls */ |
d732c44c | 1854 | uvc_ctrl_prune_entity(dev, entity); |
2bdd29cf | 1855 | |
ba2fa996 | 1856 | /* Count supported controls and allocate the controls array */ |
c0efd232 LP |
1857 | for (i = 0; i < bControlSize; ++i) |
1858 | ncontrols += hweight8(bmControls[i]); | |
c0efd232 LP |
1859 | if (ncontrols == 0) |
1860 | continue; | |
1861 | ||
ba2fa996 LP |
1862 | entity->controls = kzalloc(ncontrols * sizeof(*ctrl), |
1863 | GFP_KERNEL); | |
c0efd232 LP |
1864 | if (entity->controls == NULL) |
1865 | return -ENOMEM; | |
c0efd232 LP |
1866 | entity->ncontrols = ncontrols; |
1867 | ||
ba2fa996 | 1868 | /* Initialize all supported controls */ |
c0efd232 LP |
1869 | ctrl = entity->controls; |
1870 | for (i = 0; i < bControlSize * 8; ++i) { | |
2bdd29cf | 1871 | if (uvc_test_bit(bmControls, i) == 0) |
c0efd232 LP |
1872 | continue; |
1873 | ||
1874 | ctrl->entity = entity; | |
1875 | ctrl->index = i; | |
ba2fa996 LP |
1876 | |
1877 | uvc_ctrl_init_ctrl(dev, ctrl); | |
c0efd232 LP |
1878 | ctrl++; |
1879 | } | |
1880 | } | |
1881 | ||
c0efd232 LP |
1882 | return 0; |
1883 | } | |
1884 | ||
1885 | /* | |
1886 | * Cleanup device controls. | |
1887 | */ | |
ba2fa996 LP |
1888 | static void uvc_ctrl_cleanup_mappings(struct uvc_device *dev, |
1889 | struct uvc_control *ctrl) | |
c0efd232 | 1890 | { |
ba2fa996 | 1891 | struct uvc_control_mapping *mapping, *nm; |
c0efd232 | 1892 | |
071c8bb8 | 1893 | list_for_each_entry_safe(mapping, nm, &ctrl->info.mappings, list) { |
ba2fa996 LP |
1894 | list_del(&mapping->list); |
1895 | kfree(mapping->menu_info); | |
1896 | kfree(mapping); | |
c0efd232 LP |
1897 | } |
1898 | } | |
1899 | ||
ba2fa996 | 1900 | void uvc_ctrl_cleanup_device(struct uvc_device *dev) |
561474c2 | 1901 | { |
ba2fa996 LP |
1902 | struct uvc_entity *entity; |
1903 | unsigned int i; | |
561474c2 | 1904 | |
ba2fa996 LP |
1905 | /* Free controls and control mappings for all entities. */ |
1906 | list_for_each_entry(entity, &dev->entities, list) { | |
1907 | for (i = 0; i < entity->ncontrols; ++i) { | |
1908 | struct uvc_control *ctrl = &entity->controls[i]; | |
1909 | ||
071c8bb8 | 1910 | if (!ctrl->initialized) |
ba2fa996 | 1911 | continue; |
561474c2 | 1912 | |
ba2fa996 LP |
1913 | uvc_ctrl_cleanup_mappings(dev, ctrl); |
1914 | kfree(ctrl->uvc_data); | |
561474c2 LP |
1915 | } |
1916 | ||
ba2fa996 | 1917 | kfree(entity->controls); |
561474c2 LP |
1918 | } |
1919 | } |