Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1 | /* |
| 2 | V4L2 controls framework implementation. |
| 3 | |
| 4 | Copyright (C) 2010 Hans Verkuil <hverkuil@xs4all.nl> |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | |
| 21 | #include <linux/ctype.h> |
Randy Dunlap | 2b80163 | 2010-08-09 14:56:35 -0300 | [diff] [blame] | 22 | #include <linux/slab.h> |
Paul Gortmaker | 35a2463 | 2011-08-01 15:26:38 -0400 | [diff] [blame] | 23 | #include <linux/export.h> |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 24 | #include <media/v4l2-ioctl.h> |
| 25 | #include <media/v4l2-device.h> |
| 26 | #include <media/v4l2-ctrls.h> |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 27 | #include <media/v4l2-event.h> |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 28 | #include <media/v4l2-dev.h> |
| 29 | |
Hans Verkuil | ddac5c1 | 2011-06-10 05:43:34 -0300 | [diff] [blame] | 30 | #define has_op(master, op) \ |
| 31 | (master->ops && master->ops->op) |
Hans Verkuil | 54c911e | 2011-05-25 06:04:58 -0300 | [diff] [blame] | 32 | #define call_op(master, op) \ |
Hans Verkuil | ddac5c1 | 2011-06-10 05:43:34 -0300 | [diff] [blame] | 33 | (has_op(master, op) ? master->ops->op(master) : 0) |
Hans Verkuil | 54c911e | 2011-05-25 06:04:58 -0300 | [diff] [blame] | 34 | |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 35 | /* Internal temporary helper struct, one for each v4l2_ext_control */ |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 36 | struct v4l2_ctrl_helper { |
| 37 | /* Pointer to the control reference of the master control */ |
| 38 | struct v4l2_ctrl_ref *mref; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 39 | /* The control corresponding to the v4l2_ext_control ID field. */ |
| 40 | struct v4l2_ctrl *ctrl; |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 41 | /* v4l2_ext_control index of the next control belonging to the |
| 42 | same cluster, or 0 if there isn't any. */ |
| 43 | u32 next; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 44 | }; |
| 45 | |
Hans Verkuil | 72d877c | 2011-06-10 05:44:36 -0300 | [diff] [blame] | 46 | /* Small helper function to determine if the autocluster is set to manual |
Hans Verkuil | 8836510 | 2011-08-26 07:35:14 -0300 | [diff] [blame] | 47 | mode. */ |
Hans Verkuil | 72d877c | 2011-06-10 05:44:36 -0300 | [diff] [blame] | 48 | static bool is_cur_manual(const struct v4l2_ctrl *master) |
| 49 | { |
| 50 | return master->is_auto && master->cur.val == master->manual_mode_value; |
| 51 | } |
| 52 | |
| 53 | /* Same as above, but this checks the against the new value instead of the |
| 54 | current value. */ |
| 55 | static bool is_new_manual(const struct v4l2_ctrl *master) |
| 56 | { |
| 57 | return master->is_auto && master->val == master->manual_mode_value; |
| 58 | } |
| 59 | |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 60 | /* Returns NULL or a character pointer array containing the menu for |
| 61 | the given control ID. The pointer array ends with a NULL pointer. |
| 62 | An empty string signifies a menu entry that is invalid. This allows |
| 63 | drivers to disable certain options if it is not supported. */ |
Hans Verkuil | 513521e | 2010-12-29 14:25:52 -0300 | [diff] [blame] | 64 | const char * const *v4l2_ctrl_get_menu(u32 id) |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 65 | { |
Hans Verkuil | 513521e | 2010-12-29 14:25:52 -0300 | [diff] [blame] | 66 | static const char * const mpeg_audio_sampling_freq[] = { |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 67 | "44.1 kHz", |
| 68 | "48 kHz", |
| 69 | "32 kHz", |
| 70 | NULL |
| 71 | }; |
Hans Verkuil | 513521e | 2010-12-29 14:25:52 -0300 | [diff] [blame] | 72 | static const char * const mpeg_audio_encoding[] = { |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 73 | "MPEG-1/2 Layer I", |
| 74 | "MPEG-1/2 Layer II", |
| 75 | "MPEG-1/2 Layer III", |
| 76 | "MPEG-2/4 AAC", |
| 77 | "AC-3", |
| 78 | NULL |
| 79 | }; |
Hans Verkuil | 513521e | 2010-12-29 14:25:52 -0300 | [diff] [blame] | 80 | static const char * const mpeg_audio_l1_bitrate[] = { |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 81 | "32 kbps", |
| 82 | "64 kbps", |
| 83 | "96 kbps", |
| 84 | "128 kbps", |
| 85 | "160 kbps", |
| 86 | "192 kbps", |
| 87 | "224 kbps", |
| 88 | "256 kbps", |
| 89 | "288 kbps", |
| 90 | "320 kbps", |
| 91 | "352 kbps", |
| 92 | "384 kbps", |
| 93 | "416 kbps", |
| 94 | "448 kbps", |
| 95 | NULL |
| 96 | }; |
Hans Verkuil | 513521e | 2010-12-29 14:25:52 -0300 | [diff] [blame] | 97 | static const char * const mpeg_audio_l2_bitrate[] = { |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 98 | "32 kbps", |
| 99 | "48 kbps", |
| 100 | "56 kbps", |
| 101 | "64 kbps", |
| 102 | "80 kbps", |
| 103 | "96 kbps", |
| 104 | "112 kbps", |
| 105 | "128 kbps", |
| 106 | "160 kbps", |
| 107 | "192 kbps", |
| 108 | "224 kbps", |
| 109 | "256 kbps", |
| 110 | "320 kbps", |
| 111 | "384 kbps", |
| 112 | NULL |
| 113 | }; |
Hans Verkuil | 513521e | 2010-12-29 14:25:52 -0300 | [diff] [blame] | 114 | static const char * const mpeg_audio_l3_bitrate[] = { |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 115 | "32 kbps", |
| 116 | "40 kbps", |
| 117 | "48 kbps", |
| 118 | "56 kbps", |
| 119 | "64 kbps", |
| 120 | "80 kbps", |
| 121 | "96 kbps", |
| 122 | "112 kbps", |
| 123 | "128 kbps", |
| 124 | "160 kbps", |
| 125 | "192 kbps", |
| 126 | "224 kbps", |
| 127 | "256 kbps", |
| 128 | "320 kbps", |
| 129 | NULL |
| 130 | }; |
Hans Verkuil | 513521e | 2010-12-29 14:25:52 -0300 | [diff] [blame] | 131 | static const char * const mpeg_audio_ac3_bitrate[] = { |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 132 | "32 kbps", |
| 133 | "40 kbps", |
| 134 | "48 kbps", |
| 135 | "56 kbps", |
| 136 | "64 kbps", |
| 137 | "80 kbps", |
| 138 | "96 kbps", |
| 139 | "112 kbps", |
| 140 | "128 kbps", |
| 141 | "160 kbps", |
| 142 | "192 kbps", |
| 143 | "224 kbps", |
| 144 | "256 kbps", |
| 145 | "320 kbps", |
| 146 | "384 kbps", |
| 147 | "448 kbps", |
| 148 | "512 kbps", |
| 149 | "576 kbps", |
| 150 | "640 kbps", |
| 151 | NULL |
| 152 | }; |
Hans Verkuil | 513521e | 2010-12-29 14:25:52 -0300 | [diff] [blame] | 153 | static const char * const mpeg_audio_mode[] = { |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 154 | "Stereo", |
| 155 | "Joint Stereo", |
| 156 | "Dual", |
| 157 | "Mono", |
| 158 | NULL |
| 159 | }; |
Hans Verkuil | 513521e | 2010-12-29 14:25:52 -0300 | [diff] [blame] | 160 | static const char * const mpeg_audio_mode_extension[] = { |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 161 | "Bound 4", |
| 162 | "Bound 8", |
| 163 | "Bound 12", |
| 164 | "Bound 16", |
| 165 | NULL |
| 166 | }; |
Hans Verkuil | 513521e | 2010-12-29 14:25:52 -0300 | [diff] [blame] | 167 | static const char * const mpeg_audio_emphasis[] = { |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 168 | "No Emphasis", |
| 169 | "50/15 us", |
| 170 | "CCITT J17", |
| 171 | NULL |
| 172 | }; |
Hans Verkuil | 513521e | 2010-12-29 14:25:52 -0300 | [diff] [blame] | 173 | static const char * const mpeg_audio_crc[] = { |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 174 | "No CRC", |
| 175 | "16-bit CRC", |
| 176 | NULL |
| 177 | }; |
Hans Verkuil | 24c19a2 | 2011-12-15 10:46:16 -0300 | [diff] [blame] | 178 | static const char * const mpeg_audio_dec_playback[] = { |
| 179 | "Auto", |
| 180 | "Stereo", |
| 181 | "Left", |
| 182 | "Right", |
| 183 | "Mono", |
| 184 | "Swapped Stereo", |
| 185 | NULL |
| 186 | }; |
Hans Verkuil | 513521e | 2010-12-29 14:25:52 -0300 | [diff] [blame] | 187 | static const char * const mpeg_video_encoding[] = { |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 188 | "MPEG-1", |
| 189 | "MPEG-2", |
| 190 | "MPEG-4 AVC", |
| 191 | NULL |
| 192 | }; |
Hans Verkuil | 513521e | 2010-12-29 14:25:52 -0300 | [diff] [blame] | 193 | static const char * const mpeg_video_aspect[] = { |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 194 | "1x1", |
| 195 | "4x3", |
| 196 | "16x9", |
| 197 | "2.21x1", |
| 198 | NULL |
| 199 | }; |
Hans Verkuil | 513521e | 2010-12-29 14:25:52 -0300 | [diff] [blame] | 200 | static const char * const mpeg_video_bitrate_mode[] = { |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 201 | "Variable Bitrate", |
| 202 | "Constant Bitrate", |
| 203 | NULL |
| 204 | }; |
Hans Verkuil | 513521e | 2010-12-29 14:25:52 -0300 | [diff] [blame] | 205 | static const char * const mpeg_stream_type[] = { |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 206 | "MPEG-2 Program Stream", |
| 207 | "MPEG-2 Transport Stream", |
| 208 | "MPEG-1 System Stream", |
| 209 | "MPEG-2 DVD-compatible Stream", |
| 210 | "MPEG-1 VCD-compatible Stream", |
| 211 | "MPEG-2 SVCD-compatible Stream", |
| 212 | NULL |
| 213 | }; |
Hans Verkuil | 513521e | 2010-12-29 14:25:52 -0300 | [diff] [blame] | 214 | static const char * const mpeg_stream_vbi_fmt[] = { |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 215 | "No VBI", |
Kamil Debski | 064f509 | 2011-06-14 10:46:22 -0300 | [diff] [blame] | 216 | "Private Packet, IVTV Format", |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 217 | NULL |
| 218 | }; |
Hans Verkuil | 513521e | 2010-12-29 14:25:52 -0300 | [diff] [blame] | 219 | static const char * const camera_power_line_frequency[] = { |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 220 | "Disabled", |
| 221 | "50 Hz", |
| 222 | "60 Hz", |
Sylwester Nawrocki | d26a663 | 2011-09-04 19:08:54 -0300 | [diff] [blame] | 223 | "Auto", |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 224 | NULL |
| 225 | }; |
Hans Verkuil | 513521e | 2010-12-29 14:25:52 -0300 | [diff] [blame] | 226 | static const char * const camera_exposure_auto[] = { |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 227 | "Auto Mode", |
| 228 | "Manual Mode", |
| 229 | "Shutter Priority Mode", |
| 230 | "Aperture Priority Mode", |
| 231 | NULL |
| 232 | }; |
Sylwester Nawrocki | cf07213 | 2012-04-30 04:34:10 -0300 | [diff] [blame] | 233 | static const char * const camera_exposure_metering[] = { |
| 234 | "Average", |
| 235 | "Center Weighted", |
| 236 | "Spot", |
| 237 | NULL |
| 238 | }; |
Sylwester Nawrocki | 2272ab6 | 2012-05-11 06:37:03 -0300 | [diff] [blame] | 239 | static const char * const camera_auto_focus_range[] = { |
| 240 | "Auto", |
| 241 | "Normal", |
| 242 | "Macro", |
| 243 | "Infinity", |
| 244 | NULL |
| 245 | }; |
Hans Verkuil | 513521e | 2010-12-29 14:25:52 -0300 | [diff] [blame] | 246 | static const char * const colorfx[] = { |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 247 | "None", |
| 248 | "Black & White", |
| 249 | "Sepia", |
| 250 | "Negative", |
| 251 | "Emboss", |
| 252 | "Sketch", |
Kamil Debski | 064f509 | 2011-06-14 10:46:22 -0300 | [diff] [blame] | 253 | "Sky Blue", |
| 254 | "Grass Green", |
| 255 | "Skin Whiten", |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 256 | "Vivid", |
Sylwester Nawrocki | 6491d1a | 2012-04-02 06:40:19 -0300 | [diff] [blame] | 257 | "Aqua", |
| 258 | "Art Freeze", |
| 259 | "Silhouette", |
| 260 | "Solarization", |
| 261 | "Antique", |
| 262 | "Set Cb/Cr", |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 263 | NULL |
| 264 | }; |
Sylwester Nawrocki | e40a057 | 2012-03-06 07:04:26 -0300 | [diff] [blame] | 265 | static const char * const auto_n_preset_white_balance[] = { |
| 266 | "Manual", |
| 267 | "Auto", |
| 268 | "Incandescent", |
| 269 | "Fluorescent", |
| 270 | "Fluorescent H", |
| 271 | "Horizon", |
| 272 | "Daylight", |
| 273 | "Flash", |
| 274 | "Cloudy", |
| 275 | "Shade", |
| 276 | NULL, |
| 277 | }; |
Sylwester Nawrocki | 7f84ad8 | 2012-05-01 17:39:45 -0300 | [diff] [blame] | 278 | static const char * const camera_iso_sensitivity_auto[] = { |
| 279 | "Manual", |
| 280 | "Auto", |
| 281 | NULL |
| 282 | }; |
Sylwester Nawrocki | 0bf6b7d | 2012-04-16 10:45:44 -0300 | [diff] [blame] | 283 | static const char * const scene_mode[] = { |
| 284 | "None", |
| 285 | "Backlight", |
| 286 | "Beach/Snow", |
| 287 | "Candle Light", |
| 288 | "Dusk/Dawn", |
| 289 | "Fall Colors", |
| 290 | "Fireworks", |
| 291 | "Landscape", |
| 292 | "Night", |
| 293 | "Party/Indoor", |
| 294 | "Portrait", |
| 295 | "Sports", |
| 296 | "Sunset", |
| 297 | "Text", |
| 298 | NULL |
| 299 | }; |
Hans Verkuil | 513521e | 2010-12-29 14:25:52 -0300 | [diff] [blame] | 300 | static const char * const tune_preemphasis[] = { |
Kamil Debski | 064f509 | 2011-06-14 10:46:22 -0300 | [diff] [blame] | 301 | "No Preemphasis", |
Hans Verkuil | f769c26 | 2012-03-02 04:20:19 -0300 | [diff] [blame] | 302 | "50 Microseconds", |
| 303 | "75 Microseconds", |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 304 | NULL, |
| 305 | }; |
Kamil Debski | 064f509 | 2011-06-14 10:46:22 -0300 | [diff] [blame] | 306 | static const char * const header_mode[] = { |
| 307 | "Separate Buffer", |
| 308 | "Joined With 1st Frame", |
| 309 | NULL, |
| 310 | }; |
| 311 | static const char * const multi_slice[] = { |
| 312 | "Single", |
| 313 | "Max Macroblocks", |
| 314 | "Max Bytes", |
| 315 | NULL, |
| 316 | }; |
| 317 | static const char * const entropy_mode[] = { |
| 318 | "CAVLC", |
| 319 | "CABAC", |
| 320 | NULL, |
| 321 | }; |
| 322 | static const char * const mpeg_h264_level[] = { |
| 323 | "1", |
| 324 | "1b", |
| 325 | "1.1", |
| 326 | "1.2", |
| 327 | "1.3", |
| 328 | "2", |
| 329 | "2.1", |
| 330 | "2.2", |
| 331 | "3", |
| 332 | "3.1", |
| 333 | "3.2", |
| 334 | "4", |
| 335 | "4.1", |
| 336 | "4.2", |
| 337 | "5", |
| 338 | "5.1", |
| 339 | NULL, |
| 340 | }; |
| 341 | static const char * const h264_loop_filter[] = { |
| 342 | "Enabled", |
| 343 | "Disabled", |
| 344 | "Disabled at Slice Boundary", |
| 345 | NULL, |
| 346 | }; |
| 347 | static const char * const h264_profile[] = { |
| 348 | "Baseline", |
| 349 | "Constrained Baseline", |
| 350 | "Main", |
| 351 | "Extended", |
| 352 | "High", |
| 353 | "High 10", |
| 354 | "High 422", |
| 355 | "High 444 Predictive", |
| 356 | "High 10 Intra", |
| 357 | "High 422 Intra", |
| 358 | "High 444 Intra", |
| 359 | "CAVLC 444 Intra", |
| 360 | "Scalable Baseline", |
| 361 | "Scalable High", |
| 362 | "Scalable High Intra", |
| 363 | "Multiview High", |
| 364 | NULL, |
| 365 | }; |
| 366 | static const char * const vui_sar_idc[] = { |
| 367 | "Unspecified", |
| 368 | "1:1", |
| 369 | "12:11", |
| 370 | "10:11", |
| 371 | "16:11", |
| 372 | "40:33", |
| 373 | "24:11", |
| 374 | "20:11", |
| 375 | "32:11", |
| 376 | "80:33", |
| 377 | "18:11", |
| 378 | "15:11", |
| 379 | "64:33", |
| 380 | "160:99", |
| 381 | "4:3", |
| 382 | "3:2", |
| 383 | "2:1", |
| 384 | "Extended SAR", |
| 385 | NULL, |
| 386 | }; |
Arun Kumar K | 2e81dde | 2012-10-03 22:19:06 -0300 | [diff] [blame] | 387 | static const char * const h264_fp_arrangement_type[] = { |
| 388 | "Checkerboard", |
| 389 | "Column", |
| 390 | "Row", |
| 391 | "Side by Side", |
| 392 | "Top Bottom", |
| 393 | "Temporal", |
| 394 | NULL, |
| 395 | }; |
| 396 | static const char * const h264_fmo_map_type[] = { |
| 397 | "Interleaved Slices", |
| 398 | "Scattered Slices", |
| 399 | "Foreground with Leftover", |
| 400 | "Box Out", |
| 401 | "Raster Scan", |
| 402 | "Wipe Scan", |
| 403 | "Explicit", |
| 404 | NULL, |
| 405 | }; |
Kamil Debski | 064f509 | 2011-06-14 10:46:22 -0300 | [diff] [blame] | 406 | static const char * const mpeg_mpeg4_level[] = { |
| 407 | "0", |
| 408 | "0b", |
| 409 | "1", |
| 410 | "2", |
| 411 | "3", |
| 412 | "3b", |
| 413 | "4", |
| 414 | "5", |
| 415 | NULL, |
| 416 | }; |
| 417 | static const char * const mpeg4_profile[] = { |
| 418 | "Simple", |
Hans Verkuil | f769c26 | 2012-03-02 04:20:19 -0300 | [diff] [blame] | 419 | "Advanced Simple", |
Kamil Debski | 064f509 | 2011-06-14 10:46:22 -0300 | [diff] [blame] | 420 | "Core", |
| 421 | "Simple Scalable", |
| 422 | "Advanced Coding Efficency", |
| 423 | NULL, |
| 424 | }; |
| 425 | |
Sakari Ailus | 0b159ac | 2011-03-21 12:52:51 -0300 | [diff] [blame] | 426 | static const char * const flash_led_mode[] = { |
| 427 | "Off", |
| 428 | "Flash", |
| 429 | "Torch", |
| 430 | NULL, |
| 431 | }; |
| 432 | static const char * const flash_strobe_source[] = { |
| 433 | "Software", |
| 434 | "External", |
| 435 | NULL, |
| 436 | }; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 437 | |
Sylwester Nawrocki | c7361ae | 2012-01-20 15:37:44 -0300 | [diff] [blame] | 438 | static const char * const jpeg_chroma_subsampling[] = { |
| 439 | "4:4:4", |
| 440 | "4:2:2", |
| 441 | "4:2:0", |
| 442 | "4:1:1", |
| 443 | "4:1:0", |
| 444 | "Gray", |
| 445 | NULL, |
| 446 | }; |
Hans Verkuil | 977ebec | 2012-07-03 06:14:37 -0300 | [diff] [blame] | 447 | static const char * const dv_tx_mode[] = { |
| 448 | "DVI-D", |
| 449 | "HDMI", |
| 450 | NULL, |
| 451 | }; |
| 452 | static const char * const dv_rgb_range[] = { |
| 453 | "Automatic", |
| 454 | "RGB limited range (16-235)", |
| 455 | "RGB full range (0-255)", |
| 456 | NULL, |
| 457 | }; |
| 458 | |
Sylwester Nawrocki | c7361ae | 2012-01-20 15:37:44 -0300 | [diff] [blame] | 459 | |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 460 | switch (id) { |
| 461 | case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: |
| 462 | return mpeg_audio_sampling_freq; |
| 463 | case V4L2_CID_MPEG_AUDIO_ENCODING: |
| 464 | return mpeg_audio_encoding; |
| 465 | case V4L2_CID_MPEG_AUDIO_L1_BITRATE: |
| 466 | return mpeg_audio_l1_bitrate; |
| 467 | case V4L2_CID_MPEG_AUDIO_L2_BITRATE: |
| 468 | return mpeg_audio_l2_bitrate; |
| 469 | case V4L2_CID_MPEG_AUDIO_L3_BITRATE: |
| 470 | return mpeg_audio_l3_bitrate; |
| 471 | case V4L2_CID_MPEG_AUDIO_AC3_BITRATE: |
| 472 | return mpeg_audio_ac3_bitrate; |
| 473 | case V4L2_CID_MPEG_AUDIO_MODE: |
| 474 | return mpeg_audio_mode; |
| 475 | case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION: |
| 476 | return mpeg_audio_mode_extension; |
| 477 | case V4L2_CID_MPEG_AUDIO_EMPHASIS: |
| 478 | return mpeg_audio_emphasis; |
| 479 | case V4L2_CID_MPEG_AUDIO_CRC: |
| 480 | return mpeg_audio_crc; |
Hans Verkuil | 24c19a2 | 2011-12-15 10:46:16 -0300 | [diff] [blame] | 481 | case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK: |
| 482 | case V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK: |
| 483 | return mpeg_audio_dec_playback; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 484 | case V4L2_CID_MPEG_VIDEO_ENCODING: |
| 485 | return mpeg_video_encoding; |
| 486 | case V4L2_CID_MPEG_VIDEO_ASPECT: |
| 487 | return mpeg_video_aspect; |
| 488 | case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: |
| 489 | return mpeg_video_bitrate_mode; |
| 490 | case V4L2_CID_MPEG_STREAM_TYPE: |
| 491 | return mpeg_stream_type; |
| 492 | case V4L2_CID_MPEG_STREAM_VBI_FMT: |
| 493 | return mpeg_stream_vbi_fmt; |
| 494 | case V4L2_CID_POWER_LINE_FREQUENCY: |
| 495 | return camera_power_line_frequency; |
| 496 | case V4L2_CID_EXPOSURE_AUTO: |
| 497 | return camera_exposure_auto; |
Sylwester Nawrocki | cf07213 | 2012-04-30 04:34:10 -0300 | [diff] [blame] | 498 | case V4L2_CID_EXPOSURE_METERING: |
| 499 | return camera_exposure_metering; |
Sylwester Nawrocki | 2272ab6 | 2012-05-11 06:37:03 -0300 | [diff] [blame] | 500 | case V4L2_CID_AUTO_FOCUS_RANGE: |
| 501 | return camera_auto_focus_range; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 502 | case V4L2_CID_COLORFX: |
| 503 | return colorfx; |
Sylwester Nawrocki | e40a057 | 2012-03-06 07:04:26 -0300 | [diff] [blame] | 504 | case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE: |
| 505 | return auto_n_preset_white_balance; |
Sylwester Nawrocki | 7f84ad8 | 2012-05-01 17:39:45 -0300 | [diff] [blame] | 506 | case V4L2_CID_ISO_SENSITIVITY_AUTO: |
| 507 | return camera_iso_sensitivity_auto; |
Sylwester Nawrocki | 0bf6b7d | 2012-04-16 10:45:44 -0300 | [diff] [blame] | 508 | case V4L2_CID_SCENE_MODE: |
| 509 | return scene_mode; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 510 | case V4L2_CID_TUNE_PREEMPHASIS: |
| 511 | return tune_preemphasis; |
Sakari Ailus | 0b159ac | 2011-03-21 12:52:51 -0300 | [diff] [blame] | 512 | case V4L2_CID_FLASH_LED_MODE: |
| 513 | return flash_led_mode; |
| 514 | case V4L2_CID_FLASH_STROBE_SOURCE: |
| 515 | return flash_strobe_source; |
Kamil Debski | 064f509 | 2011-06-14 10:46:22 -0300 | [diff] [blame] | 516 | case V4L2_CID_MPEG_VIDEO_HEADER_MODE: |
| 517 | return header_mode; |
| 518 | case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE: |
| 519 | return multi_slice; |
| 520 | case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE: |
| 521 | return entropy_mode; |
| 522 | case V4L2_CID_MPEG_VIDEO_H264_LEVEL: |
| 523 | return mpeg_h264_level; |
| 524 | case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE: |
| 525 | return h264_loop_filter; |
| 526 | case V4L2_CID_MPEG_VIDEO_H264_PROFILE: |
| 527 | return h264_profile; |
| 528 | case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC: |
| 529 | return vui_sar_idc; |
Arun Kumar K | 2e81dde | 2012-10-03 22:19:06 -0300 | [diff] [blame] | 530 | case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE: |
| 531 | return h264_fp_arrangement_type; |
| 532 | case V4L2_CID_MPEG_VIDEO_H264_FMO_MAP_TYPE: |
| 533 | return h264_fmo_map_type; |
Kamil Debski | 064f509 | 2011-06-14 10:46:22 -0300 | [diff] [blame] | 534 | case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL: |
| 535 | return mpeg_mpeg4_level; |
| 536 | case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE: |
| 537 | return mpeg4_profile; |
Sylwester Nawrocki | c7361ae | 2012-01-20 15:37:44 -0300 | [diff] [blame] | 538 | case V4L2_CID_JPEG_CHROMA_SUBSAMPLING: |
| 539 | return jpeg_chroma_subsampling; |
Hans Verkuil | 977ebec | 2012-07-03 06:14:37 -0300 | [diff] [blame] | 540 | case V4L2_CID_DV_TX_MODE: |
| 541 | return dv_tx_mode; |
| 542 | case V4L2_CID_DV_TX_RGB_RANGE: |
| 543 | case V4L2_CID_DV_RX_RGB_RANGE: |
| 544 | return dv_rgb_range; |
Sylwester Nawrocki | c7361ae | 2012-01-20 15:37:44 -0300 | [diff] [blame] | 545 | |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 546 | default: |
| 547 | return NULL; |
| 548 | } |
| 549 | } |
| 550 | EXPORT_SYMBOL(v4l2_ctrl_get_menu); |
| 551 | |
| 552 | /* Return the control name. */ |
| 553 | const char *v4l2_ctrl_get_name(u32 id) |
| 554 | { |
| 555 | switch (id) { |
| 556 | /* USER controls */ |
Hans Verkuil | 6c8d611 | 2010-04-25 19:21:00 -0300 | [diff] [blame] | 557 | /* Keep the order of the 'case's the same as in videodev2.h! */ |
Mauro Carvalho Chehab | 6dd5aff | 2010-08-06 09:57:02 -0300 | [diff] [blame] | 558 | case V4L2_CID_USER_CLASS: return "User Controls"; |
| 559 | case V4L2_CID_BRIGHTNESS: return "Brightness"; |
| 560 | case V4L2_CID_CONTRAST: return "Contrast"; |
| 561 | case V4L2_CID_SATURATION: return "Saturation"; |
| 562 | case V4L2_CID_HUE: return "Hue"; |
| 563 | case V4L2_CID_AUDIO_VOLUME: return "Volume"; |
| 564 | case V4L2_CID_AUDIO_BALANCE: return "Balance"; |
| 565 | case V4L2_CID_AUDIO_BASS: return "Bass"; |
| 566 | case V4L2_CID_AUDIO_TREBLE: return "Treble"; |
| 567 | case V4L2_CID_AUDIO_MUTE: return "Mute"; |
| 568 | case V4L2_CID_AUDIO_LOUDNESS: return "Loudness"; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 569 | case V4L2_CID_BLACK_LEVEL: return "Black Level"; |
| 570 | case V4L2_CID_AUTO_WHITE_BALANCE: return "White Balance, Automatic"; |
| 571 | case V4L2_CID_DO_WHITE_BALANCE: return "Do White Balance"; |
| 572 | case V4L2_CID_RED_BALANCE: return "Red Balance"; |
| 573 | case V4L2_CID_BLUE_BALANCE: return "Blue Balance"; |
| 574 | case V4L2_CID_GAMMA: return "Gamma"; |
| 575 | case V4L2_CID_EXPOSURE: return "Exposure"; |
| 576 | case V4L2_CID_AUTOGAIN: return "Gain, Automatic"; |
| 577 | case V4L2_CID_GAIN: return "Gain"; |
| 578 | case V4L2_CID_HFLIP: return "Horizontal Flip"; |
| 579 | case V4L2_CID_VFLIP: return "Vertical Flip"; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 580 | case V4L2_CID_POWER_LINE_FREQUENCY: return "Power Line Frequency"; |
| 581 | case V4L2_CID_HUE_AUTO: return "Hue, Automatic"; |
| 582 | case V4L2_CID_WHITE_BALANCE_TEMPERATURE: return "White Balance Temperature"; |
| 583 | case V4L2_CID_SHARPNESS: return "Sharpness"; |
| 584 | case V4L2_CID_BACKLIGHT_COMPENSATION: return "Backlight Compensation"; |
| 585 | case V4L2_CID_CHROMA_AGC: return "Chroma AGC"; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 586 | case V4L2_CID_COLOR_KILLER: return "Color Killer"; |
| 587 | case V4L2_CID_COLORFX: return "Color Effects"; |
| 588 | case V4L2_CID_AUTOBRIGHTNESS: return "Brightness, Automatic"; |
| 589 | case V4L2_CID_BAND_STOP_FILTER: return "Band-Stop Filter"; |
| 590 | case V4L2_CID_ROTATE: return "Rotate"; |
| 591 | case V4L2_CID_BG_COLOR: return "Background Color"; |
Hans Verkuil | 6c8d611 | 2010-04-25 19:21:00 -0300 | [diff] [blame] | 592 | case V4L2_CID_CHROMA_GAIN: return "Chroma Gain"; |
Jean-François Moine | 008d35f | 2010-09-13 07:04:49 -0300 | [diff] [blame] | 593 | case V4L2_CID_ILLUMINATORS_1: return "Illuminator 1"; |
| 594 | case V4L2_CID_ILLUMINATORS_2: return "Illuminator 2"; |
Hans Verkuil | f08aacf | 2012-01-16 12:27:15 -0300 | [diff] [blame] | 595 | case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE: return "Min Number of Capture Buffers"; |
| 596 | case V4L2_CID_MIN_BUFFERS_FOR_OUTPUT: return "Min Number of Output Buffers"; |
Sylwester Nawrocki | cc1d327 | 2011-11-14 08:48:18 -0300 | [diff] [blame] | 597 | case V4L2_CID_ALPHA_COMPONENT: return "Alpha Component"; |
Sylwester Nawrocki | 6491d1a | 2012-04-02 06:40:19 -0300 | [diff] [blame] | 598 | case V4L2_CID_COLORFX_CBCR: return "Color Effects, CbCr"; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 599 | |
| 600 | /* MPEG controls */ |
Hans Verkuil | 6c8d611 | 2010-04-25 19:21:00 -0300 | [diff] [blame] | 601 | /* Keep the order of the 'case's the same as in videodev2.h! */ |
Mauro Carvalho Chehab | 6dd5aff | 2010-08-06 09:57:02 -0300 | [diff] [blame] | 602 | case V4L2_CID_MPEG_CLASS: return "MPEG Encoder Controls"; |
| 603 | case V4L2_CID_MPEG_STREAM_TYPE: return "Stream Type"; |
| 604 | case V4L2_CID_MPEG_STREAM_PID_PMT: return "Stream PMT Program ID"; |
| 605 | case V4L2_CID_MPEG_STREAM_PID_AUDIO: return "Stream Audio Program ID"; |
| 606 | case V4L2_CID_MPEG_STREAM_PID_VIDEO: return "Stream Video Program ID"; |
| 607 | case V4L2_CID_MPEG_STREAM_PID_PCR: return "Stream PCR Program ID"; |
Hans Verkuil | 6c8d611 | 2010-04-25 19:21:00 -0300 | [diff] [blame] | 608 | case V4L2_CID_MPEG_STREAM_PES_ID_AUDIO: return "Stream PES Audio ID"; |
| 609 | case V4L2_CID_MPEG_STREAM_PES_ID_VIDEO: return "Stream PES Video ID"; |
| 610 | case V4L2_CID_MPEG_STREAM_VBI_FMT: return "Stream VBI Format"; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 611 | case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: return "Audio Sampling Frequency"; |
Mauro Carvalho Chehab | 6dd5aff | 2010-08-06 09:57:02 -0300 | [diff] [blame] | 612 | case V4L2_CID_MPEG_AUDIO_ENCODING: return "Audio Encoding"; |
| 613 | case V4L2_CID_MPEG_AUDIO_L1_BITRATE: return "Audio Layer I Bitrate"; |
| 614 | case V4L2_CID_MPEG_AUDIO_L2_BITRATE: return "Audio Layer II Bitrate"; |
| 615 | case V4L2_CID_MPEG_AUDIO_L3_BITRATE: return "Audio Layer III Bitrate"; |
| 616 | case V4L2_CID_MPEG_AUDIO_MODE: return "Audio Stereo Mode"; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 617 | case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION: return "Audio Stereo Mode Extension"; |
Mauro Carvalho Chehab | 6dd5aff | 2010-08-06 09:57:02 -0300 | [diff] [blame] | 618 | case V4L2_CID_MPEG_AUDIO_EMPHASIS: return "Audio Emphasis"; |
| 619 | case V4L2_CID_MPEG_AUDIO_CRC: return "Audio CRC"; |
| 620 | case V4L2_CID_MPEG_AUDIO_MUTE: return "Audio Mute"; |
| 621 | case V4L2_CID_MPEG_AUDIO_AAC_BITRATE: return "Audio AAC Bitrate"; |
| 622 | case V4L2_CID_MPEG_AUDIO_AC3_BITRATE: return "Audio AC-3 Bitrate"; |
Hans Verkuil | 24c19a2 | 2011-12-15 10:46:16 -0300 | [diff] [blame] | 623 | case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK: return "Audio Playback"; |
| 624 | case V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK: return "Audio Multilingual Playback"; |
Mauro Carvalho Chehab | 6dd5aff | 2010-08-06 09:57:02 -0300 | [diff] [blame] | 625 | case V4L2_CID_MPEG_VIDEO_ENCODING: return "Video Encoding"; |
| 626 | case V4L2_CID_MPEG_VIDEO_ASPECT: return "Video Aspect"; |
| 627 | case V4L2_CID_MPEG_VIDEO_B_FRAMES: return "Video B Frames"; |
| 628 | case V4L2_CID_MPEG_VIDEO_GOP_SIZE: return "Video GOP Size"; |
| 629 | case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE: return "Video GOP Closure"; |
| 630 | case V4L2_CID_MPEG_VIDEO_PULLDOWN: return "Video Pulldown"; |
| 631 | case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: return "Video Bitrate Mode"; |
| 632 | case V4L2_CID_MPEG_VIDEO_BITRATE: return "Video Bitrate"; |
| 633 | case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: return "Video Peak Bitrate"; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 634 | case V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION: return "Video Temporal Decimation"; |
Mauro Carvalho Chehab | 6dd5aff | 2010-08-06 09:57:02 -0300 | [diff] [blame] | 635 | case V4L2_CID_MPEG_VIDEO_MUTE: return "Video Mute"; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 636 | case V4L2_CID_MPEG_VIDEO_MUTE_YUV: return "Video Mute YUV"; |
Kamil Debski | 064f509 | 2011-06-14 10:46:22 -0300 | [diff] [blame] | 637 | case V4L2_CID_MPEG_VIDEO_DECODER_SLICE_INTERFACE: return "Decoder Slice Interface"; |
| 638 | case V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER: return "MPEG4 Loop Filter Enable"; |
Hans Verkuil | f08aacf | 2012-01-16 12:27:15 -0300 | [diff] [blame] | 639 | case V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB: return "Number of Intra Refresh MBs"; |
Kamil Debski | 064f509 | 2011-06-14 10:46:22 -0300 | [diff] [blame] | 640 | case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE: return "Frame Level Rate Control Enable"; |
| 641 | case V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE: return "H264 MB Level Rate Control"; |
| 642 | case V4L2_CID_MPEG_VIDEO_HEADER_MODE: return "Sequence Header Mode"; |
Hans Verkuil | f08aacf | 2012-01-16 12:27:15 -0300 | [diff] [blame] | 643 | case V4L2_CID_MPEG_VIDEO_MAX_REF_PIC: return "Max Number of Reference Pics"; |
Kamil Debski | 064f509 | 2011-06-14 10:46:22 -0300 | [diff] [blame] | 644 | case V4L2_CID_MPEG_VIDEO_H263_I_FRAME_QP: return "H263 I-Frame QP Value"; |
Hans Verkuil | f08aacf | 2012-01-16 12:27:15 -0300 | [diff] [blame] | 645 | case V4L2_CID_MPEG_VIDEO_H263_P_FRAME_QP: return "H263 P-Frame QP Value"; |
| 646 | case V4L2_CID_MPEG_VIDEO_H263_B_FRAME_QP: return "H263 B-Frame QP Value"; |
Kamil Debski | 064f509 | 2011-06-14 10:46:22 -0300 | [diff] [blame] | 647 | case V4L2_CID_MPEG_VIDEO_H263_MIN_QP: return "H263 Minimum QP Value"; |
| 648 | case V4L2_CID_MPEG_VIDEO_H263_MAX_QP: return "H263 Maximum QP Value"; |
| 649 | case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP: return "H264 I-Frame QP Value"; |
Hans Verkuil | f08aacf | 2012-01-16 12:27:15 -0300 | [diff] [blame] | 650 | case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP: return "H264 P-Frame QP Value"; |
| 651 | case V4L2_CID_MPEG_VIDEO_H264_B_FRAME_QP: return "H264 B-Frame QP Value"; |
Kamil Debski | 064f509 | 2011-06-14 10:46:22 -0300 | [diff] [blame] | 652 | case V4L2_CID_MPEG_VIDEO_H264_MAX_QP: return "H264 Maximum QP Value"; |
| 653 | case V4L2_CID_MPEG_VIDEO_H264_MIN_QP: return "H264 Minimum QP Value"; |
| 654 | case V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM: return "H264 8x8 Transform Enable"; |
| 655 | case V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE: return "H264 CPB Buffer Size"; |
Hans Verkuil | f08aacf | 2012-01-16 12:27:15 -0300 | [diff] [blame] | 656 | case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE: return "H264 Entropy Mode"; |
| 657 | case V4L2_CID_MPEG_VIDEO_H264_I_PERIOD: return "H264 I-Frame Period"; |
Kamil Debski | 064f509 | 2011-06-14 10:46:22 -0300 | [diff] [blame] | 658 | case V4L2_CID_MPEG_VIDEO_H264_LEVEL: return "H264 Level"; |
| 659 | case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA: return "H264 Loop Filter Alpha Offset"; |
| 660 | case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA: return "H264 Loop Filter Beta Offset"; |
| 661 | case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE: return "H264 Loop Filter Mode"; |
| 662 | case V4L2_CID_MPEG_VIDEO_H264_PROFILE: return "H264 Profile"; |
| 663 | case V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_HEIGHT: return "Vertical Size of SAR"; |
| 664 | case V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_WIDTH: return "Horizontal Size of SAR"; |
| 665 | case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE: return "Aspect Ratio VUI Enable"; |
| 666 | case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC: return "VUI Aspect Ratio IDC"; |
Arun Kumar K | 2e81dde | 2012-10-03 22:19:06 -0300 | [diff] [blame] | 667 | case V4L2_CID_MPEG_VIDEO_H264_SEI_FRAME_PACKING: return "H264 Enable Frame Packing SEI"; |
| 668 | case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_CURRENT_FRAME_0: return "H264 Set Curr. Frame as Frame0"; |
| 669 | case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE: return "H264 FP Arrangement Type"; |
| 670 | case V4L2_CID_MPEG_VIDEO_H264_FMO: return "H264 Flexible MB Ordering"; |
| 671 | case V4L2_CID_MPEG_VIDEO_H264_FMO_MAP_TYPE: return "H264 Map Type for FMO"; |
| 672 | case V4L2_CID_MPEG_VIDEO_H264_FMO_SLICE_GROUP: return "H264 FMO Number of Slice Groups"; |
| 673 | case V4L2_CID_MPEG_VIDEO_H264_FMO_CHANGE_DIRECTION: return "H264 FMO Direction of Change"; |
| 674 | case V4L2_CID_MPEG_VIDEO_H264_FMO_CHANGE_RATE: return "H264 FMO Size of 1st Slice Grp"; |
| 675 | case V4L2_CID_MPEG_VIDEO_H264_FMO_RUN_LENGTH: return "H264 FMO No. of Consecutive MBs"; |
| 676 | case V4L2_CID_MPEG_VIDEO_H264_ASO: return "H264 Arbitrary Slice Ordering"; |
| 677 | case V4L2_CID_MPEG_VIDEO_H264_ASO_SLICE_ORDER: return "H264 ASO Slice Order"; |
| 678 | case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING: return "Enable H264 Hierarchical Coding"; |
| 679 | case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_TYPE: return "H264 Hierarchical Coding Type"; |
| 680 | case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_LAYER:return "H264 Number of HC Layers"; |
| 681 | case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_LAYER_QP: |
| 682 | return "H264 Set QP Value for HC Layers"; |
Kamil Debski | 064f509 | 2011-06-14 10:46:22 -0300 | [diff] [blame] | 683 | case V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP: return "MPEG4 I-Frame QP Value"; |
Hans Verkuil | f08aacf | 2012-01-16 12:27:15 -0300 | [diff] [blame] | 684 | case V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP: return "MPEG4 P-Frame QP Value"; |
| 685 | case V4L2_CID_MPEG_VIDEO_MPEG4_B_FRAME_QP: return "MPEG4 B-Frame QP Value"; |
Kamil Debski | 064f509 | 2011-06-14 10:46:22 -0300 | [diff] [blame] | 686 | case V4L2_CID_MPEG_VIDEO_MPEG4_MIN_QP: return "MPEG4 Minimum QP Value"; |
| 687 | case V4L2_CID_MPEG_VIDEO_MPEG4_MAX_QP: return "MPEG4 Maximum QP Value"; |
| 688 | case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL: return "MPEG4 Level"; |
| 689 | case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE: return "MPEG4 Profile"; |
| 690 | case V4L2_CID_MPEG_VIDEO_MPEG4_QPEL: return "Quarter Pixel Search Enable"; |
Hans Verkuil | f08aacf | 2012-01-16 12:27:15 -0300 | [diff] [blame] | 691 | case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES: return "Maximum Bytes in a Slice"; |
| 692 | case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB: return "Number of MBs in a Slice"; |
| 693 | case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE: return "Slice Partitioning Method"; |
Kamil Debski | 064f509 | 2011-06-14 10:46:22 -0300 | [diff] [blame] | 694 | case V4L2_CID_MPEG_VIDEO_VBV_SIZE: return "VBV Buffer Size"; |
Hans Verkuil | 24c19a2 | 2011-12-15 10:46:16 -0300 | [diff] [blame] | 695 | case V4L2_CID_MPEG_VIDEO_DEC_PTS: return "Video Decoder PTS"; |
| 696 | case V4L2_CID_MPEG_VIDEO_DEC_FRAME: return "Video Decoder Frame Count"; |
Arun Kumar K | 2e81dde | 2012-10-03 22:19:06 -0300 | [diff] [blame] | 697 | case V4L2_CID_MPEG_VIDEO_VBV_DELAY: return "Initial Delay for VBV Control"; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 698 | |
| 699 | /* CAMERA controls */ |
Hans Verkuil | 6c8d611 | 2010-04-25 19:21:00 -0300 | [diff] [blame] | 700 | /* Keep the order of the 'case's the same as in videodev2.h! */ |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 701 | case V4L2_CID_CAMERA_CLASS: return "Camera Controls"; |
| 702 | case V4L2_CID_EXPOSURE_AUTO: return "Auto Exposure"; |
| 703 | case V4L2_CID_EXPOSURE_ABSOLUTE: return "Exposure Time, Absolute"; |
| 704 | case V4L2_CID_EXPOSURE_AUTO_PRIORITY: return "Exposure, Dynamic Framerate"; |
| 705 | case V4L2_CID_PAN_RELATIVE: return "Pan, Relative"; |
| 706 | case V4L2_CID_TILT_RELATIVE: return "Tilt, Relative"; |
| 707 | case V4L2_CID_PAN_RESET: return "Pan, Reset"; |
| 708 | case V4L2_CID_TILT_RESET: return "Tilt, Reset"; |
| 709 | case V4L2_CID_PAN_ABSOLUTE: return "Pan, Absolute"; |
| 710 | case V4L2_CID_TILT_ABSOLUTE: return "Tilt, Absolute"; |
| 711 | case V4L2_CID_FOCUS_ABSOLUTE: return "Focus, Absolute"; |
| 712 | case V4L2_CID_FOCUS_RELATIVE: return "Focus, Relative"; |
Sylwester Nawrocki | 2272ab6 | 2012-05-11 06:37:03 -0300 | [diff] [blame] | 713 | case V4L2_CID_FOCUS_AUTO: return "Focus, Automatic Continuous"; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 714 | case V4L2_CID_ZOOM_ABSOLUTE: return "Zoom, Absolute"; |
| 715 | case V4L2_CID_ZOOM_RELATIVE: return "Zoom, Relative"; |
| 716 | case V4L2_CID_ZOOM_CONTINUOUS: return "Zoom, Continuous"; |
| 717 | case V4L2_CID_PRIVACY: return "Privacy"; |
Hans Verkuil | 6c8d611 | 2010-04-25 19:21:00 -0300 | [diff] [blame] | 718 | case V4L2_CID_IRIS_ABSOLUTE: return "Iris, Absolute"; |
| 719 | case V4L2_CID_IRIS_RELATIVE: return "Iris, Relative"; |
Sylwester Nawrocki | d58083c | 2012-03-06 07:06:55 -0300 | [diff] [blame] | 720 | case V4L2_CID_AUTO_EXPOSURE_BIAS: return "Auto Exposure, Bias"; |
Sylwester Nawrocki | e40a057 | 2012-03-06 07:04:26 -0300 | [diff] [blame] | 721 | case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE: return "White Balance, Auto & Preset"; |
Sylwester Nawrocki | 44d44a1 | 2012-03-06 07:05:45 -0300 | [diff] [blame] | 722 | case V4L2_CID_WIDE_DYNAMIC_RANGE: return "Wide Dynamic Range"; |
Sylwester Nawrocki | 82b3056 | 2012-05-01 17:38:09 -0300 | [diff] [blame] | 723 | case V4L2_CID_IMAGE_STABILIZATION: return "Image Stabilization"; |
Sylwester Nawrocki | 7f84ad8 | 2012-05-01 17:39:45 -0300 | [diff] [blame] | 724 | case V4L2_CID_ISO_SENSITIVITY: return "ISO Sensitivity"; |
| 725 | case V4L2_CID_ISO_SENSITIVITY_AUTO: return "ISO Sensitivity, Auto"; |
Sylwester Nawrocki | cf07213 | 2012-04-30 04:34:10 -0300 | [diff] [blame] | 726 | case V4L2_CID_EXPOSURE_METERING: return "Exposure, Metering Mode"; |
Sylwester Nawrocki | 0bf6b7d | 2012-04-16 10:45:44 -0300 | [diff] [blame] | 727 | case V4L2_CID_SCENE_MODE: return "Scene Mode"; |
Sylwester Nawrocki | fc162a0 | 2012-05-02 06:24:33 -0300 | [diff] [blame] | 728 | case V4L2_CID_3A_LOCK: return "3A Lock"; |
Sylwester Nawrocki | 2272ab6 | 2012-05-11 06:37:03 -0300 | [diff] [blame] | 729 | case V4L2_CID_AUTO_FOCUS_START: return "Auto Focus, Start"; |
| 730 | case V4L2_CID_AUTO_FOCUS_STOP: return "Auto Focus, Stop"; |
| 731 | case V4L2_CID_AUTO_FOCUS_STATUS: return "Auto Focus, Status"; |
| 732 | case V4L2_CID_AUTO_FOCUS_RANGE: return "Auto Focus, Range"; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 733 | |
| 734 | /* FM Radio Modulator control */ |
Hans Verkuil | 6c8d611 | 2010-04-25 19:21:00 -0300 | [diff] [blame] | 735 | /* Keep the order of the 'case's the same as in videodev2.h! */ |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 736 | case V4L2_CID_FM_TX_CLASS: return "FM Radio Modulator Controls"; |
| 737 | case V4L2_CID_RDS_TX_DEVIATION: return "RDS Signal Deviation"; |
| 738 | case V4L2_CID_RDS_TX_PI: return "RDS Program ID"; |
| 739 | case V4L2_CID_RDS_TX_PTY: return "RDS Program Type"; |
| 740 | case V4L2_CID_RDS_TX_PS_NAME: return "RDS PS Name"; |
| 741 | case V4L2_CID_RDS_TX_RADIO_TEXT: return "RDS Radio Text"; |
| 742 | case V4L2_CID_AUDIO_LIMITER_ENABLED: return "Audio Limiter Feature Enabled"; |
| 743 | case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME: return "Audio Limiter Release Time"; |
| 744 | case V4L2_CID_AUDIO_LIMITER_DEVIATION: return "Audio Limiter Deviation"; |
Hans Verkuil | f08aacf | 2012-01-16 12:27:15 -0300 | [diff] [blame] | 745 | case V4L2_CID_AUDIO_COMPRESSION_ENABLED: return "Audio Compression Enabled"; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 746 | case V4L2_CID_AUDIO_COMPRESSION_GAIN: return "Audio Compression Gain"; |
| 747 | case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD: return "Audio Compression Threshold"; |
| 748 | case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME: return "Audio Compression Attack Time"; |
| 749 | case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME: return "Audio Compression Release Time"; |
| 750 | case V4L2_CID_PILOT_TONE_ENABLED: return "Pilot Tone Feature Enabled"; |
| 751 | case V4L2_CID_PILOT_TONE_DEVIATION: return "Pilot Tone Deviation"; |
| 752 | case V4L2_CID_PILOT_TONE_FREQUENCY: return "Pilot Tone Frequency"; |
Hans Verkuil | f08aacf | 2012-01-16 12:27:15 -0300 | [diff] [blame] | 753 | case V4L2_CID_TUNE_PREEMPHASIS: return "Pre-Emphasis"; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 754 | case V4L2_CID_TUNE_POWER_LEVEL: return "Tune Power Level"; |
| 755 | case V4L2_CID_TUNE_ANTENNA_CAPACITOR: return "Tune Antenna Capacitor"; |
| 756 | |
Sakari Ailus | 0b159ac | 2011-03-21 12:52:51 -0300 | [diff] [blame] | 757 | /* Flash controls */ |
Hans Verkuil | f08aacf | 2012-01-16 12:27:15 -0300 | [diff] [blame] | 758 | case V4L2_CID_FLASH_CLASS: return "Flash Controls"; |
| 759 | case V4L2_CID_FLASH_LED_MODE: return "LED Mode"; |
| 760 | case V4L2_CID_FLASH_STROBE_SOURCE: return "Strobe Source"; |
Sakari Ailus | 0b159ac | 2011-03-21 12:52:51 -0300 | [diff] [blame] | 761 | case V4L2_CID_FLASH_STROBE: return "Strobe"; |
Hans Verkuil | f08aacf | 2012-01-16 12:27:15 -0300 | [diff] [blame] | 762 | case V4L2_CID_FLASH_STROBE_STOP: return "Stop Strobe"; |
| 763 | case V4L2_CID_FLASH_STROBE_STATUS: return "Strobe Status"; |
| 764 | case V4L2_CID_FLASH_TIMEOUT: return "Strobe Timeout"; |
| 765 | case V4L2_CID_FLASH_INTENSITY: return "Intensity, Flash Mode"; |
| 766 | case V4L2_CID_FLASH_TORCH_INTENSITY: return "Intensity, Torch Mode"; |
| 767 | case V4L2_CID_FLASH_INDICATOR_INTENSITY: return "Intensity, Indicator"; |
Sakari Ailus | 0b159ac | 2011-03-21 12:52:51 -0300 | [diff] [blame] | 768 | case V4L2_CID_FLASH_FAULT: return "Faults"; |
| 769 | case V4L2_CID_FLASH_CHARGE: return "Charge"; |
Hans Verkuil | f08aacf | 2012-01-16 12:27:15 -0300 | [diff] [blame] | 770 | case V4L2_CID_FLASH_READY: return "Ready to Strobe"; |
Sakari Ailus | 0b159ac | 2011-03-21 12:52:51 -0300 | [diff] [blame] | 771 | |
Sylwester Nawrocki | c7361ae | 2012-01-20 15:37:44 -0300 | [diff] [blame] | 772 | /* JPEG encoder controls */ |
| 773 | /* Keep the order of the 'case's the same as in videodev2.h! */ |
| 774 | case V4L2_CID_JPEG_CLASS: return "JPEG Compression Controls"; |
| 775 | case V4L2_CID_JPEG_CHROMA_SUBSAMPLING: return "Chroma Subsampling"; |
| 776 | case V4L2_CID_JPEG_RESTART_INTERVAL: return "Restart Interval"; |
| 777 | case V4L2_CID_JPEG_COMPRESSION_QUALITY: return "Compression Quality"; |
| 778 | case V4L2_CID_JPEG_ACTIVE_MARKER: return "Active Markers"; |
| 779 | |
Sakari Ailus | 8c9d236 | 2011-10-04 08:20:05 -0300 | [diff] [blame] | 780 | /* Image source controls */ |
| 781 | case V4L2_CID_IMAGE_SOURCE_CLASS: return "Image Source Controls"; |
| 782 | case V4L2_CID_VBLANK: return "Vertical Blanking"; |
| 783 | case V4L2_CID_HBLANK: return "Horizontal Blanking"; |
| 784 | case V4L2_CID_ANALOGUE_GAIN: return "Analogue Gain"; |
| 785 | |
Sakari Ailus | c643ee1 | 2012-02-02 20:17:54 -0300 | [diff] [blame] | 786 | /* Image processing controls */ |
| 787 | case V4L2_CID_IMAGE_PROC_CLASS: return "Image Processing Controls"; |
| 788 | case V4L2_CID_LINK_FREQ: return "Link Frequency"; |
| 789 | case V4L2_CID_PIXEL_RATE: return "Pixel Rate"; |
Lad, Prabhakar | 5ebef0f | 2012-10-01 08:17:36 -0300 | [diff] [blame] | 790 | case V4L2_CID_TEST_PATTERN: return "Test Pattern"; |
Sakari Ailus | c643ee1 | 2012-02-02 20:17:54 -0300 | [diff] [blame] | 791 | |
Hans Verkuil | 977ebec | 2012-07-03 06:14:37 -0300 | [diff] [blame] | 792 | /* DV controls */ |
| 793 | case V4L2_CID_DV_CLASS: return "Digital Video Controls"; |
| 794 | case V4L2_CID_DV_TX_HOTPLUG: return "Hotplug Present"; |
| 795 | case V4L2_CID_DV_TX_RXSENSE: return "RxSense Present"; |
| 796 | case V4L2_CID_DV_TX_EDID_PRESENT: return "EDID Present"; |
| 797 | case V4L2_CID_DV_TX_MODE: return "Transmit Mode"; |
| 798 | case V4L2_CID_DV_TX_RGB_RANGE: return "Tx RGB Quantization Range"; |
| 799 | case V4L2_CID_DV_RX_POWER_PRESENT: return "Power Present"; |
| 800 | case V4L2_CID_DV_RX_RGB_RANGE: return "Rx RGB Quantization Range"; |
| 801 | |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 802 | default: |
| 803 | return NULL; |
| 804 | } |
| 805 | } |
| 806 | EXPORT_SYMBOL(v4l2_ctrl_get_name); |
| 807 | |
| 808 | void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type, |
| 809 | s32 *min, s32 *max, s32 *step, s32 *def, u32 *flags) |
| 810 | { |
| 811 | *name = v4l2_ctrl_get_name(id); |
| 812 | *flags = 0; |
| 813 | |
| 814 | switch (id) { |
| 815 | case V4L2_CID_AUDIO_MUTE: |
| 816 | case V4L2_CID_AUDIO_LOUDNESS: |
| 817 | case V4L2_CID_AUTO_WHITE_BALANCE: |
| 818 | case V4L2_CID_AUTOGAIN: |
| 819 | case V4L2_CID_HFLIP: |
| 820 | case V4L2_CID_VFLIP: |
| 821 | case V4L2_CID_HUE_AUTO: |
| 822 | case V4L2_CID_CHROMA_AGC: |
| 823 | case V4L2_CID_COLOR_KILLER: |
Hans de Goede | a2f8b84 | 2012-07-01 11:26:13 -0300 | [diff] [blame] | 824 | case V4L2_CID_AUTOBRIGHTNESS: |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 825 | case V4L2_CID_MPEG_AUDIO_MUTE: |
| 826 | case V4L2_CID_MPEG_VIDEO_MUTE: |
| 827 | case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE: |
| 828 | case V4L2_CID_MPEG_VIDEO_PULLDOWN: |
| 829 | case V4L2_CID_EXPOSURE_AUTO_PRIORITY: |
| 830 | case V4L2_CID_FOCUS_AUTO: |
| 831 | case V4L2_CID_PRIVACY: |
| 832 | case V4L2_CID_AUDIO_LIMITER_ENABLED: |
| 833 | case V4L2_CID_AUDIO_COMPRESSION_ENABLED: |
| 834 | case V4L2_CID_PILOT_TONE_ENABLED: |
Jean-François Moine | 008d35f | 2010-09-13 07:04:49 -0300 | [diff] [blame] | 835 | case V4L2_CID_ILLUMINATORS_1: |
| 836 | case V4L2_CID_ILLUMINATORS_2: |
Sakari Ailus | 0b159ac | 2011-03-21 12:52:51 -0300 | [diff] [blame] | 837 | case V4L2_CID_FLASH_STROBE_STATUS: |
| 838 | case V4L2_CID_FLASH_CHARGE: |
| 839 | case V4L2_CID_FLASH_READY: |
Kamil Debski | 064f509 | 2011-06-14 10:46:22 -0300 | [diff] [blame] | 840 | case V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER: |
| 841 | case V4L2_CID_MPEG_VIDEO_DECODER_SLICE_INTERFACE: |
| 842 | case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE: |
| 843 | case V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE: |
| 844 | case V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM: |
| 845 | case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE: |
| 846 | case V4L2_CID_MPEG_VIDEO_MPEG4_QPEL: |
Sylwester Nawrocki | 44d44a1 | 2012-03-06 07:05:45 -0300 | [diff] [blame] | 847 | case V4L2_CID_WIDE_DYNAMIC_RANGE: |
Sylwester Nawrocki | 82b3056 | 2012-05-01 17:38:09 -0300 | [diff] [blame] | 848 | case V4L2_CID_IMAGE_STABILIZATION: |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 849 | *type = V4L2_CTRL_TYPE_BOOLEAN; |
| 850 | *min = 0; |
| 851 | *max = *step = 1; |
| 852 | break; |
| 853 | case V4L2_CID_PAN_RESET: |
| 854 | case V4L2_CID_TILT_RESET: |
Sakari Ailus | 0b159ac | 2011-03-21 12:52:51 -0300 | [diff] [blame] | 855 | case V4L2_CID_FLASH_STROBE: |
| 856 | case V4L2_CID_FLASH_STROBE_STOP: |
Sylwester Nawrocki | 2272ab6 | 2012-05-11 06:37:03 -0300 | [diff] [blame] | 857 | case V4L2_CID_AUTO_FOCUS_START: |
| 858 | case V4L2_CID_AUTO_FOCUS_STOP: |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 859 | *type = V4L2_CTRL_TYPE_BUTTON; |
| 860 | *flags |= V4L2_CTRL_FLAG_WRITE_ONLY; |
| 861 | *min = *max = *step = *def = 0; |
| 862 | break; |
| 863 | case V4L2_CID_POWER_LINE_FREQUENCY: |
| 864 | case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: |
| 865 | case V4L2_CID_MPEG_AUDIO_ENCODING: |
| 866 | case V4L2_CID_MPEG_AUDIO_L1_BITRATE: |
| 867 | case V4L2_CID_MPEG_AUDIO_L2_BITRATE: |
| 868 | case V4L2_CID_MPEG_AUDIO_L3_BITRATE: |
| 869 | case V4L2_CID_MPEG_AUDIO_AC3_BITRATE: |
| 870 | case V4L2_CID_MPEG_AUDIO_MODE: |
| 871 | case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION: |
| 872 | case V4L2_CID_MPEG_AUDIO_EMPHASIS: |
| 873 | case V4L2_CID_MPEG_AUDIO_CRC: |
Hans Verkuil | 24c19a2 | 2011-12-15 10:46:16 -0300 | [diff] [blame] | 874 | case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK: |
| 875 | case V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK: |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 876 | case V4L2_CID_MPEG_VIDEO_ENCODING: |
| 877 | case V4L2_CID_MPEG_VIDEO_ASPECT: |
| 878 | case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: |
| 879 | case V4L2_CID_MPEG_STREAM_TYPE: |
| 880 | case V4L2_CID_MPEG_STREAM_VBI_FMT: |
| 881 | case V4L2_CID_EXPOSURE_AUTO: |
Sylwester Nawrocki | 2272ab6 | 2012-05-11 06:37:03 -0300 | [diff] [blame] | 882 | case V4L2_CID_AUTO_FOCUS_RANGE: |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 883 | case V4L2_CID_COLORFX: |
Sylwester Nawrocki | e40a057 | 2012-03-06 07:04:26 -0300 | [diff] [blame] | 884 | case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE: |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 885 | case V4L2_CID_TUNE_PREEMPHASIS: |
Sakari Ailus | 0b159ac | 2011-03-21 12:52:51 -0300 | [diff] [blame] | 886 | case V4L2_CID_FLASH_LED_MODE: |
| 887 | case V4L2_CID_FLASH_STROBE_SOURCE: |
Kamil Debski | 064f509 | 2011-06-14 10:46:22 -0300 | [diff] [blame] | 888 | case V4L2_CID_MPEG_VIDEO_HEADER_MODE: |
| 889 | case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE: |
| 890 | case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE: |
| 891 | case V4L2_CID_MPEG_VIDEO_H264_LEVEL: |
| 892 | case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE: |
| 893 | case V4L2_CID_MPEG_VIDEO_H264_PROFILE: |
| 894 | case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC: |
Arun Kumar K | 2e81dde | 2012-10-03 22:19:06 -0300 | [diff] [blame] | 895 | case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE: |
| 896 | case V4L2_CID_MPEG_VIDEO_H264_FMO_MAP_TYPE: |
Kamil Debski | 064f509 | 2011-06-14 10:46:22 -0300 | [diff] [blame] | 897 | case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL: |
| 898 | case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE: |
Sylwester Nawrocki | c7361ae | 2012-01-20 15:37:44 -0300 | [diff] [blame] | 899 | case V4L2_CID_JPEG_CHROMA_SUBSAMPLING: |
Sylwester Nawrocki | 7f84ad8 | 2012-05-01 17:39:45 -0300 | [diff] [blame] | 900 | case V4L2_CID_ISO_SENSITIVITY_AUTO: |
Sylwester Nawrocki | cf07213 | 2012-04-30 04:34:10 -0300 | [diff] [blame] | 901 | case V4L2_CID_EXPOSURE_METERING: |
Sylwester Nawrocki | 0bf6b7d | 2012-04-16 10:45:44 -0300 | [diff] [blame] | 902 | case V4L2_CID_SCENE_MODE: |
Hans Verkuil | 977ebec | 2012-07-03 06:14:37 -0300 | [diff] [blame] | 903 | case V4L2_CID_DV_TX_MODE: |
| 904 | case V4L2_CID_DV_TX_RGB_RANGE: |
| 905 | case V4L2_CID_DV_RX_RGB_RANGE: |
Lad, Prabhakar | 5ebef0f | 2012-10-01 08:17:36 -0300 | [diff] [blame] | 906 | case V4L2_CID_TEST_PATTERN: |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 907 | *type = V4L2_CTRL_TYPE_MENU; |
| 908 | break; |
Sakari Ailus | c643ee1 | 2012-02-02 20:17:54 -0300 | [diff] [blame] | 909 | case V4L2_CID_LINK_FREQ: |
| 910 | *type = V4L2_CTRL_TYPE_INTEGER_MENU; |
| 911 | break; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 912 | case V4L2_CID_RDS_TX_PS_NAME: |
| 913 | case V4L2_CID_RDS_TX_RADIO_TEXT: |
| 914 | *type = V4L2_CTRL_TYPE_STRING; |
| 915 | break; |
Sylwester Nawrocki | 7f84ad8 | 2012-05-01 17:39:45 -0300 | [diff] [blame] | 916 | case V4L2_CID_ISO_SENSITIVITY: |
Sylwester Nawrocki | d58083c | 2012-03-06 07:06:55 -0300 | [diff] [blame] | 917 | case V4L2_CID_AUTO_EXPOSURE_BIAS: |
| 918 | *type = V4L2_CTRL_TYPE_INTEGER_MENU; |
| 919 | break; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 920 | case V4L2_CID_USER_CLASS: |
| 921 | case V4L2_CID_CAMERA_CLASS: |
| 922 | case V4L2_CID_MPEG_CLASS: |
| 923 | case V4L2_CID_FM_TX_CLASS: |
Sakari Ailus | 0b159ac | 2011-03-21 12:52:51 -0300 | [diff] [blame] | 924 | case V4L2_CID_FLASH_CLASS: |
Sylwester Nawrocki | c7361ae | 2012-01-20 15:37:44 -0300 | [diff] [blame] | 925 | case V4L2_CID_JPEG_CLASS: |
Sakari Ailus | 8c9d236 | 2011-10-04 08:20:05 -0300 | [diff] [blame] | 926 | case V4L2_CID_IMAGE_SOURCE_CLASS: |
Sakari Ailus | c643ee1 | 2012-02-02 20:17:54 -0300 | [diff] [blame] | 927 | case V4L2_CID_IMAGE_PROC_CLASS: |
Hans Verkuil | 977ebec | 2012-07-03 06:14:37 -0300 | [diff] [blame] | 928 | case V4L2_CID_DV_CLASS: |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 929 | *type = V4L2_CTRL_TYPE_CTRL_CLASS; |
| 930 | /* You can neither read not write these */ |
| 931 | *flags |= V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_WRITE_ONLY; |
| 932 | *min = *max = *step = *def = 0; |
| 933 | break; |
| 934 | case V4L2_CID_BG_COLOR: |
| 935 | *type = V4L2_CTRL_TYPE_INTEGER; |
| 936 | *step = 1; |
| 937 | *min = 0; |
| 938 | /* Max is calculated as RGB888 that is 2^24 */ |
| 939 | *max = 0xFFFFFF; |
| 940 | break; |
Sakari Ailus | 0b159ac | 2011-03-21 12:52:51 -0300 | [diff] [blame] | 941 | case V4L2_CID_FLASH_FAULT: |
Sylwester Nawrocki | c7361ae | 2012-01-20 15:37:44 -0300 | [diff] [blame] | 942 | case V4L2_CID_JPEG_ACTIVE_MARKER: |
Sylwester Nawrocki | fc162a0 | 2012-05-02 06:24:33 -0300 | [diff] [blame] | 943 | case V4L2_CID_3A_LOCK: |
Sylwester Nawrocki | 2272ab6 | 2012-05-11 06:37:03 -0300 | [diff] [blame] | 944 | case V4L2_CID_AUTO_FOCUS_STATUS: |
Hans Verkuil | 977ebec | 2012-07-03 06:14:37 -0300 | [diff] [blame] | 945 | case V4L2_CID_DV_TX_HOTPLUG: |
| 946 | case V4L2_CID_DV_TX_RXSENSE: |
| 947 | case V4L2_CID_DV_TX_EDID_PRESENT: |
| 948 | case V4L2_CID_DV_RX_POWER_PRESENT: |
Sakari Ailus | 0b159ac | 2011-03-21 12:52:51 -0300 | [diff] [blame] | 949 | *type = V4L2_CTRL_TYPE_BITMASK; |
| 950 | break; |
Kamil Debski | 064f509 | 2011-06-14 10:46:22 -0300 | [diff] [blame] | 951 | case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE: |
| 952 | case V4L2_CID_MIN_BUFFERS_FOR_OUTPUT: |
| 953 | *type = V4L2_CTRL_TYPE_INTEGER; |
| 954 | *flags |= V4L2_CTRL_FLAG_READ_ONLY; |
| 955 | break; |
Hans Verkuil | 24c19a2 | 2011-12-15 10:46:16 -0300 | [diff] [blame] | 956 | case V4L2_CID_MPEG_VIDEO_DEC_FRAME: |
| 957 | case V4L2_CID_MPEG_VIDEO_DEC_PTS: |
Sakari Ailus | c643ee1 | 2012-02-02 20:17:54 -0300 | [diff] [blame] | 958 | *flags |= V4L2_CTRL_FLAG_VOLATILE; |
| 959 | /* Fall through */ |
| 960 | case V4L2_CID_PIXEL_RATE: |
Hans Verkuil | 24c19a2 | 2011-12-15 10:46:16 -0300 | [diff] [blame] | 961 | *type = V4L2_CTRL_TYPE_INTEGER64; |
Sakari Ailus | c643ee1 | 2012-02-02 20:17:54 -0300 | [diff] [blame] | 962 | *flags |= V4L2_CTRL_FLAG_READ_ONLY; |
Hans Verkuil | ca57681 | 2012-04-19 12:37:18 -0300 | [diff] [blame] | 963 | *min = *max = *step = *def = 0; |
Hans Verkuil | 24c19a2 | 2011-12-15 10:46:16 -0300 | [diff] [blame] | 964 | break; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 965 | default: |
| 966 | *type = V4L2_CTRL_TYPE_INTEGER; |
| 967 | break; |
| 968 | } |
| 969 | switch (id) { |
| 970 | case V4L2_CID_MPEG_AUDIO_ENCODING: |
| 971 | case V4L2_CID_MPEG_AUDIO_MODE: |
| 972 | case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: |
| 973 | case V4L2_CID_MPEG_VIDEO_B_FRAMES: |
| 974 | case V4L2_CID_MPEG_STREAM_TYPE: |
| 975 | *flags |= V4L2_CTRL_FLAG_UPDATE; |
| 976 | break; |
| 977 | case V4L2_CID_AUDIO_VOLUME: |
| 978 | case V4L2_CID_AUDIO_BALANCE: |
| 979 | case V4L2_CID_AUDIO_BASS: |
| 980 | case V4L2_CID_AUDIO_TREBLE: |
| 981 | case V4L2_CID_BRIGHTNESS: |
| 982 | case V4L2_CID_CONTRAST: |
| 983 | case V4L2_CID_SATURATION: |
| 984 | case V4L2_CID_HUE: |
| 985 | case V4L2_CID_RED_BALANCE: |
| 986 | case V4L2_CID_BLUE_BALANCE: |
| 987 | case V4L2_CID_GAMMA: |
| 988 | case V4L2_CID_SHARPNESS: |
| 989 | case V4L2_CID_CHROMA_GAIN: |
| 990 | case V4L2_CID_RDS_TX_DEVIATION: |
| 991 | case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME: |
| 992 | case V4L2_CID_AUDIO_LIMITER_DEVIATION: |
| 993 | case V4L2_CID_AUDIO_COMPRESSION_GAIN: |
| 994 | case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD: |
| 995 | case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME: |
| 996 | case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME: |
| 997 | case V4L2_CID_PILOT_TONE_DEVIATION: |
| 998 | case V4L2_CID_PILOT_TONE_FREQUENCY: |
| 999 | case V4L2_CID_TUNE_POWER_LEVEL: |
| 1000 | case V4L2_CID_TUNE_ANTENNA_CAPACITOR: |
| 1001 | *flags |= V4L2_CTRL_FLAG_SLIDER; |
| 1002 | break; |
| 1003 | case V4L2_CID_PAN_RELATIVE: |
| 1004 | case V4L2_CID_TILT_RELATIVE: |
| 1005 | case V4L2_CID_FOCUS_RELATIVE: |
| 1006 | case V4L2_CID_IRIS_RELATIVE: |
| 1007 | case V4L2_CID_ZOOM_RELATIVE: |
| 1008 | *flags |= V4L2_CTRL_FLAG_WRITE_ONLY; |
| 1009 | break; |
Sakari Ailus | 0b159ac | 2011-03-21 12:52:51 -0300 | [diff] [blame] | 1010 | case V4L2_CID_FLASH_STROBE_STATUS: |
Sylwester Nawrocki | 2272ab6 | 2012-05-11 06:37:03 -0300 | [diff] [blame] | 1011 | case V4L2_CID_AUTO_FOCUS_STATUS: |
Sakari Ailus | 0b159ac | 2011-03-21 12:52:51 -0300 | [diff] [blame] | 1012 | case V4L2_CID_FLASH_READY: |
Hans Verkuil | 977ebec | 2012-07-03 06:14:37 -0300 | [diff] [blame] | 1013 | case V4L2_CID_DV_TX_HOTPLUG: |
| 1014 | case V4L2_CID_DV_TX_RXSENSE: |
| 1015 | case V4L2_CID_DV_TX_EDID_PRESENT: |
| 1016 | case V4L2_CID_DV_RX_POWER_PRESENT: |
Sakari Ailus | 0b159ac | 2011-03-21 12:52:51 -0300 | [diff] [blame] | 1017 | *flags |= V4L2_CTRL_FLAG_READ_ONLY; |
| 1018 | break; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1019 | } |
| 1020 | } |
| 1021 | EXPORT_SYMBOL(v4l2_ctrl_fill); |
| 1022 | |
| 1023 | /* Helper function to determine whether the control type is compatible with |
| 1024 | VIDIOC_G/S_CTRL. */ |
| 1025 | static bool type_is_int(const struct v4l2_ctrl *ctrl) |
| 1026 | { |
| 1027 | switch (ctrl->type) { |
| 1028 | case V4L2_CTRL_TYPE_INTEGER64: |
| 1029 | case V4L2_CTRL_TYPE_STRING: |
| 1030 | /* Nope, these need v4l2_ext_control */ |
| 1031 | return false; |
| 1032 | default: |
| 1033 | return true; |
| 1034 | } |
| 1035 | } |
| 1036 | |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 1037 | static void fill_event(struct v4l2_event *ev, struct v4l2_ctrl *ctrl, u32 changes) |
| 1038 | { |
| 1039 | memset(ev->reserved, 0, sizeof(ev->reserved)); |
| 1040 | ev->type = V4L2_EVENT_CTRL; |
| 1041 | ev->id = ctrl->id; |
| 1042 | ev->u.ctrl.changes = changes; |
| 1043 | ev->u.ctrl.type = ctrl->type; |
| 1044 | ev->u.ctrl.flags = ctrl->flags; |
| 1045 | if (ctrl->type == V4L2_CTRL_TYPE_STRING) |
| 1046 | ev->u.ctrl.value64 = 0; |
| 1047 | else |
| 1048 | ev->u.ctrl.value64 = ctrl->cur.val64; |
| 1049 | ev->u.ctrl.minimum = ctrl->minimum; |
| 1050 | ev->u.ctrl.maximum = ctrl->maximum; |
Sakari Ailus | ce580fe | 2011-08-04 13:51:11 -0300 | [diff] [blame] | 1051 | if (ctrl->type == V4L2_CTRL_TYPE_MENU |
| 1052 | || ctrl->type == V4L2_CTRL_TYPE_INTEGER_MENU) |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 1053 | ev->u.ctrl.step = 1; |
| 1054 | else |
| 1055 | ev->u.ctrl.step = ctrl->step; |
| 1056 | ev->u.ctrl.default_value = ctrl->default_value; |
| 1057 | } |
| 1058 | |
| 1059 | static void send_event(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 changes) |
| 1060 | { |
| 1061 | struct v4l2_event ev; |
Hans Verkuil | 77068d3 | 2011-06-13 18:55:58 -0300 | [diff] [blame] | 1062 | struct v4l2_subscribed_event *sev; |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 1063 | |
Hans Verkuil | 77068d3 | 2011-06-13 18:55:58 -0300 | [diff] [blame] | 1064 | if (list_empty(&ctrl->ev_subs)) |
Hans Verkuil | 3f66f0e | 2011-06-20 11:56:24 -0300 | [diff] [blame] | 1065 | return; |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 1066 | fill_event(&ev, ctrl, changes); |
| 1067 | |
Hans Verkuil | 77068d3 | 2011-06-13 18:55:58 -0300 | [diff] [blame] | 1068 | list_for_each_entry(sev, &ctrl->ev_subs, node) |
Hans de Goede | e3e72f39 | 2011-10-26 05:52:47 -0300 | [diff] [blame] | 1069 | if (sev->fh != fh || |
| 1070 | (sev->flags & V4L2_EVENT_SUB_FL_ALLOW_FEEDBACK)) |
Hans Verkuil | 77068d3 | 2011-06-13 18:55:58 -0300 | [diff] [blame] | 1071 | v4l2_event_queue_fh(sev->fh, &ev); |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 1072 | } |
| 1073 | |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1074 | /* Helper function: copy the current control value back to the caller */ |
| 1075 | static int cur_to_user(struct v4l2_ext_control *c, |
| 1076 | struct v4l2_ctrl *ctrl) |
| 1077 | { |
| 1078 | u32 len; |
| 1079 | |
| 1080 | switch (ctrl->type) { |
| 1081 | case V4L2_CTRL_TYPE_STRING: |
| 1082 | len = strlen(ctrl->cur.string); |
| 1083 | if (c->size < len + 1) { |
| 1084 | c->size = len + 1; |
| 1085 | return -ENOSPC; |
| 1086 | } |
| 1087 | return copy_to_user(c->string, ctrl->cur.string, |
| 1088 | len + 1) ? -EFAULT : 0; |
| 1089 | case V4L2_CTRL_TYPE_INTEGER64: |
| 1090 | c->value64 = ctrl->cur.val64; |
| 1091 | break; |
| 1092 | default: |
| 1093 | c->value = ctrl->cur.val; |
| 1094 | break; |
| 1095 | } |
| 1096 | return 0; |
| 1097 | } |
| 1098 | |
| 1099 | /* Helper function: copy the caller-provider value as the new control value */ |
| 1100 | static int user_to_new(struct v4l2_ext_control *c, |
| 1101 | struct v4l2_ctrl *ctrl) |
| 1102 | { |
| 1103 | int ret; |
| 1104 | u32 size; |
| 1105 | |
Hans Verkuil | 2a86379 | 2011-01-11 14:45:03 -0300 | [diff] [blame] | 1106 | ctrl->is_new = 1; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1107 | switch (ctrl->type) { |
| 1108 | case V4L2_CTRL_TYPE_INTEGER64: |
| 1109 | ctrl->val64 = c->value64; |
| 1110 | break; |
| 1111 | case V4L2_CTRL_TYPE_STRING: |
| 1112 | size = c->size; |
| 1113 | if (size == 0) |
| 1114 | return -ERANGE; |
| 1115 | if (size > ctrl->maximum + 1) |
| 1116 | size = ctrl->maximum + 1; |
| 1117 | ret = copy_from_user(ctrl->string, c->string, size); |
| 1118 | if (!ret) { |
| 1119 | char last = ctrl->string[size - 1]; |
| 1120 | |
| 1121 | ctrl->string[size - 1] = 0; |
| 1122 | /* If the string was longer than ctrl->maximum, |
| 1123 | then return an error. */ |
| 1124 | if (strlen(ctrl->string) == ctrl->maximum && last) |
| 1125 | return -ERANGE; |
| 1126 | } |
| 1127 | return ret ? -EFAULT : 0; |
| 1128 | default: |
| 1129 | ctrl->val = c->value; |
| 1130 | break; |
| 1131 | } |
| 1132 | return 0; |
| 1133 | } |
| 1134 | |
| 1135 | /* Helper function: copy the new control value back to the caller */ |
| 1136 | static int new_to_user(struct v4l2_ext_control *c, |
| 1137 | struct v4l2_ctrl *ctrl) |
| 1138 | { |
| 1139 | u32 len; |
| 1140 | |
| 1141 | switch (ctrl->type) { |
| 1142 | case V4L2_CTRL_TYPE_STRING: |
| 1143 | len = strlen(ctrl->string); |
| 1144 | if (c->size < len + 1) { |
| 1145 | c->size = ctrl->maximum + 1; |
| 1146 | return -ENOSPC; |
| 1147 | } |
| 1148 | return copy_to_user(c->string, ctrl->string, |
| 1149 | len + 1) ? -EFAULT : 0; |
| 1150 | case V4L2_CTRL_TYPE_INTEGER64: |
| 1151 | c->value64 = ctrl->val64; |
| 1152 | break; |
| 1153 | default: |
| 1154 | c->value = ctrl->val; |
| 1155 | break; |
| 1156 | } |
| 1157 | return 0; |
| 1158 | } |
| 1159 | |
| 1160 | /* Copy the new value to the current value. */ |
Sylwester Nawrocki | 2ccbe77 | 2013-01-19 15:51:55 -0300 | [diff] [blame] | 1161 | static void new_to_cur(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 ch_flags) |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1162 | { |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 1163 | bool changed = false; |
| 1164 | |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1165 | if (ctrl == NULL) |
| 1166 | return; |
| 1167 | switch (ctrl->type) { |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 1168 | case V4L2_CTRL_TYPE_BUTTON: |
| 1169 | changed = true; |
| 1170 | break; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1171 | case V4L2_CTRL_TYPE_STRING: |
| 1172 | /* strings are always 0-terminated */ |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 1173 | changed = strcmp(ctrl->string, ctrl->cur.string); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1174 | strcpy(ctrl->cur.string, ctrl->string); |
| 1175 | break; |
| 1176 | case V4L2_CTRL_TYPE_INTEGER64: |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 1177 | changed = ctrl->val64 != ctrl->cur.val64; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1178 | ctrl->cur.val64 = ctrl->val64; |
| 1179 | break; |
| 1180 | default: |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 1181 | changed = ctrl->val != ctrl->cur.val; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1182 | ctrl->cur.val = ctrl->val; |
| 1183 | break; |
| 1184 | } |
Sylwester Nawrocki | 2ccbe77 | 2013-01-19 15:51:55 -0300 | [diff] [blame] | 1185 | if (ch_flags & V4L2_EVENT_CTRL_CH_FLAGS) { |
| 1186 | /* Note: CH_FLAGS is only set for auto clusters. */ |
Hans Verkuil | 5626b8c | 2011-08-26 07:53:53 -0300 | [diff] [blame] | 1187 | ctrl->flags &= |
| 1188 | ~(V4L2_CTRL_FLAG_INACTIVE | V4L2_CTRL_FLAG_VOLATILE); |
| 1189 | if (!is_cur_manual(ctrl->cluster[0])) { |
Hans Verkuil | 72d877c | 2011-06-10 05:44:36 -0300 | [diff] [blame] | 1190 | ctrl->flags |= V4L2_CTRL_FLAG_INACTIVE; |
Hans Verkuil | 5626b8c | 2011-08-26 07:53:53 -0300 | [diff] [blame] | 1191 | if (ctrl->cluster[0]->has_volatiles) |
| 1192 | ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE; |
| 1193 | } |
Hans de Goede | 1249a3a | 2011-10-31 11:16:44 -0300 | [diff] [blame] | 1194 | fh = NULL; |
Hans Verkuil | 72d877c | 2011-06-10 05:44:36 -0300 | [diff] [blame] | 1195 | } |
Sylwester Nawrocki | 2ccbe77 | 2013-01-19 15:51:55 -0300 | [diff] [blame] | 1196 | if (changed || ch_flags) { |
Hans Verkuil | 639884a | 2011-07-05 07:09:26 -0300 | [diff] [blame] | 1197 | /* If a control was changed that was not one of the controls |
| 1198 | modified by the application, then send the event to all. */ |
| 1199 | if (!ctrl->is_new) |
| 1200 | fh = NULL; |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 1201 | send_event(fh, ctrl, |
Sylwester Nawrocki | 2ccbe77 | 2013-01-19 15:51:55 -0300 | [diff] [blame] | 1202 | (changed ? V4L2_EVENT_CTRL_CH_VALUE : 0) | ch_flags); |
Hans Verkuil | 8ac7a94 | 2012-09-07 04:46:39 -0300 | [diff] [blame] | 1203 | if (ctrl->call_notify && changed && ctrl->handler->notify) |
| 1204 | ctrl->handler->notify(ctrl, ctrl->handler->notify_priv); |
Hans Verkuil | 639884a | 2011-07-05 07:09:26 -0300 | [diff] [blame] | 1205 | } |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1206 | } |
| 1207 | |
| 1208 | /* Copy the current value to the new value */ |
| 1209 | static void cur_to_new(struct v4l2_ctrl *ctrl) |
| 1210 | { |
| 1211 | if (ctrl == NULL) |
| 1212 | return; |
| 1213 | switch (ctrl->type) { |
| 1214 | case V4L2_CTRL_TYPE_STRING: |
| 1215 | /* strings are always 0-terminated */ |
| 1216 | strcpy(ctrl->string, ctrl->cur.string); |
| 1217 | break; |
| 1218 | case V4L2_CTRL_TYPE_INTEGER64: |
| 1219 | ctrl->val64 = ctrl->cur.val64; |
| 1220 | break; |
| 1221 | default: |
| 1222 | ctrl->val = ctrl->cur.val; |
| 1223 | break; |
| 1224 | } |
| 1225 | } |
| 1226 | |
| 1227 | /* Return non-zero if one or more of the controls in the cluster has a new |
| 1228 | value that differs from the current value. */ |
| 1229 | static int cluster_changed(struct v4l2_ctrl *master) |
| 1230 | { |
| 1231 | int diff = 0; |
| 1232 | int i; |
| 1233 | |
| 1234 | for (i = 0; !diff && i < master->ncontrols; i++) { |
| 1235 | struct v4l2_ctrl *ctrl = master->cluster[i]; |
| 1236 | |
| 1237 | if (ctrl == NULL) |
| 1238 | continue; |
| 1239 | switch (ctrl->type) { |
| 1240 | case V4L2_CTRL_TYPE_BUTTON: |
| 1241 | /* Button controls are always 'different' */ |
| 1242 | return 1; |
| 1243 | case V4L2_CTRL_TYPE_STRING: |
| 1244 | /* strings are always 0-terminated */ |
| 1245 | diff = strcmp(ctrl->string, ctrl->cur.string); |
| 1246 | break; |
| 1247 | case V4L2_CTRL_TYPE_INTEGER64: |
| 1248 | diff = ctrl->val64 != ctrl->cur.val64; |
| 1249 | break; |
| 1250 | default: |
| 1251 | diff = ctrl->val != ctrl->cur.val; |
| 1252 | break; |
| 1253 | } |
| 1254 | } |
| 1255 | return diff; |
| 1256 | } |
| 1257 | |
Sylwester Nawrocki | 2ccbe77 | 2013-01-19 15:51:55 -0300 | [diff] [blame] | 1258 | /* Control range checking */ |
| 1259 | static int check_range(enum v4l2_ctrl_type type, |
| 1260 | s32 min, s32 max, u32 step, s32 def) |
| 1261 | { |
| 1262 | switch (type) { |
| 1263 | case V4L2_CTRL_TYPE_BOOLEAN: |
| 1264 | if (step != 1 || max > 1 || min < 0) |
| 1265 | return -ERANGE; |
| 1266 | /* fall through */ |
| 1267 | case V4L2_CTRL_TYPE_INTEGER: |
| 1268 | if (step <= 0 || min > max || def < min || def > max) |
| 1269 | return -ERANGE; |
| 1270 | return 0; |
| 1271 | case V4L2_CTRL_TYPE_BITMASK: |
| 1272 | if (step || min || !max || (def & ~max)) |
| 1273 | return -ERANGE; |
| 1274 | return 0; |
| 1275 | case V4L2_CTRL_TYPE_MENU: |
| 1276 | case V4L2_CTRL_TYPE_INTEGER_MENU: |
| 1277 | if (min > max || def < min || def > max) |
| 1278 | return -ERANGE; |
| 1279 | /* Note: step == menu_skip_mask for menu controls. |
| 1280 | So here we check if the default value is masked out. */ |
| 1281 | if (step && ((1 << def) & step)) |
| 1282 | return -EINVAL; |
| 1283 | return 0; |
| 1284 | case V4L2_CTRL_TYPE_STRING: |
| 1285 | if (min > max || min < 0 || step < 1 || def) |
| 1286 | return -ERANGE; |
| 1287 | return 0; |
| 1288 | default: |
| 1289 | return 0; |
| 1290 | } |
| 1291 | } |
| 1292 | |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 1293 | /* Validate a new control */ |
| 1294 | static int validate_new(const struct v4l2_ctrl *ctrl, |
| 1295 | struct v4l2_ext_control *c) |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1296 | { |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 1297 | size_t len; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1298 | u32 offset; |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 1299 | s32 val; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1300 | |
| 1301 | switch (ctrl->type) { |
| 1302 | case V4L2_CTRL_TYPE_INTEGER: |
| 1303 | /* Round towards the closest legal value */ |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 1304 | val = c->value + ctrl->step / 2; |
| 1305 | val = clamp(val, ctrl->minimum, ctrl->maximum); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1306 | offset = val - ctrl->minimum; |
| 1307 | offset = ctrl->step * (offset / ctrl->step); |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 1308 | c->value = ctrl->minimum + offset; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1309 | return 0; |
| 1310 | |
| 1311 | case V4L2_CTRL_TYPE_BOOLEAN: |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 1312 | c->value = !!c->value; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1313 | return 0; |
| 1314 | |
| 1315 | case V4L2_CTRL_TYPE_MENU: |
Sakari Ailus | ce580fe | 2011-08-04 13:51:11 -0300 | [diff] [blame] | 1316 | case V4L2_CTRL_TYPE_INTEGER_MENU: |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 1317 | if (c->value < ctrl->minimum || c->value > ctrl->maximum) |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1318 | return -ERANGE; |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 1319 | if (ctrl->menu_skip_mask & (1 << c->value)) |
Sakari Ailus | ce580fe | 2011-08-04 13:51:11 -0300 | [diff] [blame] | 1320 | return -EINVAL; |
| 1321 | if (ctrl->type == V4L2_CTRL_TYPE_MENU && |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 1322 | ctrl->qmenu[c->value][0] == '\0') |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1323 | return -EINVAL; |
| 1324 | return 0; |
| 1325 | |
Hans Verkuil | fa4d709 | 2011-05-23 04:07:05 -0300 | [diff] [blame] | 1326 | case V4L2_CTRL_TYPE_BITMASK: |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 1327 | c->value &= ctrl->maximum; |
Hans Verkuil | fa4d709 | 2011-05-23 04:07:05 -0300 | [diff] [blame] | 1328 | return 0; |
| 1329 | |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1330 | case V4L2_CTRL_TYPE_BUTTON: |
| 1331 | case V4L2_CTRL_TYPE_CTRL_CLASS: |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 1332 | c->value = 0; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1333 | return 0; |
| 1334 | |
| 1335 | case V4L2_CTRL_TYPE_INTEGER64: |
| 1336 | return 0; |
| 1337 | |
| 1338 | case V4L2_CTRL_TYPE_STRING: |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 1339 | len = strlen(c->string); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1340 | if (len < ctrl->minimum) |
| 1341 | return -ERANGE; |
| 1342 | if ((len - ctrl->minimum) % ctrl->step) |
| 1343 | return -ERANGE; |
| 1344 | return 0; |
| 1345 | |
| 1346 | default: |
| 1347 | return -EINVAL; |
| 1348 | } |
| 1349 | } |
| 1350 | |
| 1351 | static inline u32 node2id(struct list_head *node) |
| 1352 | { |
| 1353 | return list_entry(node, struct v4l2_ctrl_ref, node)->ctrl->id; |
| 1354 | } |
| 1355 | |
| 1356 | /* Set the handler's error code if it wasn't set earlier already */ |
| 1357 | static inline int handler_set_err(struct v4l2_ctrl_handler *hdl, int err) |
| 1358 | { |
| 1359 | if (hdl->error == 0) |
| 1360 | hdl->error = err; |
| 1361 | return err; |
| 1362 | } |
| 1363 | |
| 1364 | /* Initialize the handler */ |
| 1365 | int v4l2_ctrl_handler_init(struct v4l2_ctrl_handler *hdl, |
| 1366 | unsigned nr_of_controls_hint) |
| 1367 | { |
Sakari Ailus | 77e7c4e | 2012-01-24 21:05:34 -0300 | [diff] [blame] | 1368 | hdl->lock = &hdl->_lock; |
| 1369 | mutex_init(hdl->lock); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1370 | INIT_LIST_HEAD(&hdl->ctrls); |
| 1371 | INIT_LIST_HEAD(&hdl->ctrl_refs); |
| 1372 | hdl->nr_of_buckets = 1 + nr_of_controls_hint / 8; |
Thomas Meyer | 9884d7b | 2011-11-29 17:08:00 -0300 | [diff] [blame] | 1373 | hdl->buckets = kcalloc(hdl->nr_of_buckets, sizeof(hdl->buckets[0]), |
| 1374 | GFP_KERNEL); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1375 | hdl->error = hdl->buckets ? 0 : -ENOMEM; |
| 1376 | return hdl->error; |
| 1377 | } |
| 1378 | EXPORT_SYMBOL(v4l2_ctrl_handler_init); |
| 1379 | |
| 1380 | /* Free all controls and control refs */ |
| 1381 | void v4l2_ctrl_handler_free(struct v4l2_ctrl_handler *hdl) |
| 1382 | { |
| 1383 | struct v4l2_ctrl_ref *ref, *next_ref; |
| 1384 | struct v4l2_ctrl *ctrl, *next_ctrl; |
Hans Verkuil | 77068d3 | 2011-06-13 18:55:58 -0300 | [diff] [blame] | 1385 | struct v4l2_subscribed_event *sev, *next_sev; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1386 | |
| 1387 | if (hdl == NULL || hdl->buckets == NULL) |
| 1388 | return; |
| 1389 | |
Sakari Ailus | 77e7c4e | 2012-01-24 21:05:34 -0300 | [diff] [blame] | 1390 | mutex_lock(hdl->lock); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1391 | /* Free all nodes */ |
| 1392 | list_for_each_entry_safe(ref, next_ref, &hdl->ctrl_refs, node) { |
| 1393 | list_del(&ref->node); |
| 1394 | kfree(ref); |
| 1395 | } |
| 1396 | /* Free all controls owned by the handler */ |
| 1397 | list_for_each_entry_safe(ctrl, next_ctrl, &hdl->ctrls, node) { |
| 1398 | list_del(&ctrl->node); |
Hans Verkuil | 77068d3 | 2011-06-13 18:55:58 -0300 | [diff] [blame] | 1399 | list_for_each_entry_safe(sev, next_sev, &ctrl->ev_subs, node) |
| 1400 | list_del(&sev->node); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1401 | kfree(ctrl); |
| 1402 | } |
| 1403 | kfree(hdl->buckets); |
| 1404 | hdl->buckets = NULL; |
| 1405 | hdl->cached = NULL; |
| 1406 | hdl->error = 0; |
Sakari Ailus | 77e7c4e | 2012-01-24 21:05:34 -0300 | [diff] [blame] | 1407 | mutex_unlock(hdl->lock); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1408 | } |
| 1409 | EXPORT_SYMBOL(v4l2_ctrl_handler_free); |
| 1410 | |
| 1411 | /* For backwards compatibility: V4L2_CID_PRIVATE_BASE should no longer |
| 1412 | be used except in G_CTRL, S_CTRL, QUERYCTRL and QUERYMENU when dealing |
| 1413 | with applications that do not use the NEXT_CTRL flag. |
| 1414 | |
| 1415 | We just find the n-th private user control. It's O(N), but that should not |
| 1416 | be an issue in this particular case. */ |
| 1417 | static struct v4l2_ctrl_ref *find_private_ref( |
| 1418 | struct v4l2_ctrl_handler *hdl, u32 id) |
| 1419 | { |
| 1420 | struct v4l2_ctrl_ref *ref; |
| 1421 | |
| 1422 | id -= V4L2_CID_PRIVATE_BASE; |
| 1423 | list_for_each_entry(ref, &hdl->ctrl_refs, node) { |
| 1424 | /* Search for private user controls that are compatible with |
| 1425 | VIDIOC_G/S_CTRL. */ |
| 1426 | if (V4L2_CTRL_ID2CLASS(ref->ctrl->id) == V4L2_CTRL_CLASS_USER && |
| 1427 | V4L2_CTRL_DRIVER_PRIV(ref->ctrl->id)) { |
| 1428 | if (!type_is_int(ref->ctrl)) |
| 1429 | continue; |
| 1430 | if (id == 0) |
| 1431 | return ref; |
| 1432 | id--; |
| 1433 | } |
| 1434 | } |
| 1435 | return NULL; |
| 1436 | } |
| 1437 | |
| 1438 | /* Find a control with the given ID. */ |
| 1439 | static struct v4l2_ctrl_ref *find_ref(struct v4l2_ctrl_handler *hdl, u32 id) |
| 1440 | { |
| 1441 | struct v4l2_ctrl_ref *ref; |
| 1442 | int bucket; |
| 1443 | |
| 1444 | id &= V4L2_CTRL_ID_MASK; |
| 1445 | |
| 1446 | /* Old-style private controls need special handling */ |
| 1447 | if (id >= V4L2_CID_PRIVATE_BASE) |
| 1448 | return find_private_ref(hdl, id); |
| 1449 | bucket = id % hdl->nr_of_buckets; |
| 1450 | |
| 1451 | /* Simple optimization: cache the last control found */ |
| 1452 | if (hdl->cached && hdl->cached->ctrl->id == id) |
| 1453 | return hdl->cached; |
| 1454 | |
| 1455 | /* Not in cache, search the hash */ |
| 1456 | ref = hdl->buckets ? hdl->buckets[bucket] : NULL; |
| 1457 | while (ref && ref->ctrl->id != id) |
| 1458 | ref = ref->next; |
| 1459 | |
| 1460 | if (ref) |
| 1461 | hdl->cached = ref; /* cache it! */ |
| 1462 | return ref; |
| 1463 | } |
| 1464 | |
| 1465 | /* Find a control with the given ID. Take the handler's lock first. */ |
| 1466 | static struct v4l2_ctrl_ref *find_ref_lock( |
| 1467 | struct v4l2_ctrl_handler *hdl, u32 id) |
| 1468 | { |
| 1469 | struct v4l2_ctrl_ref *ref = NULL; |
| 1470 | |
| 1471 | if (hdl) { |
Sakari Ailus | 77e7c4e | 2012-01-24 21:05:34 -0300 | [diff] [blame] | 1472 | mutex_lock(hdl->lock); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1473 | ref = find_ref(hdl, id); |
Sakari Ailus | 77e7c4e | 2012-01-24 21:05:34 -0300 | [diff] [blame] | 1474 | mutex_unlock(hdl->lock); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1475 | } |
| 1476 | return ref; |
| 1477 | } |
| 1478 | |
| 1479 | /* Find a control with the given ID. */ |
| 1480 | struct v4l2_ctrl *v4l2_ctrl_find(struct v4l2_ctrl_handler *hdl, u32 id) |
| 1481 | { |
| 1482 | struct v4l2_ctrl_ref *ref = find_ref_lock(hdl, id); |
| 1483 | |
| 1484 | return ref ? ref->ctrl : NULL; |
| 1485 | } |
| 1486 | EXPORT_SYMBOL(v4l2_ctrl_find); |
| 1487 | |
| 1488 | /* Allocate a new v4l2_ctrl_ref and hook it into the handler. */ |
| 1489 | static int handler_new_ref(struct v4l2_ctrl_handler *hdl, |
| 1490 | struct v4l2_ctrl *ctrl) |
| 1491 | { |
| 1492 | struct v4l2_ctrl_ref *ref; |
| 1493 | struct v4l2_ctrl_ref *new_ref; |
| 1494 | u32 id = ctrl->id; |
| 1495 | u32 class_ctrl = V4L2_CTRL_ID2CLASS(id) | 1; |
| 1496 | int bucket = id % hdl->nr_of_buckets; /* which bucket to use */ |
| 1497 | |
| 1498 | /* Automatically add the control class if it is not yet present. */ |
| 1499 | if (id != class_ctrl && find_ref_lock(hdl, class_ctrl) == NULL) |
| 1500 | if (!v4l2_ctrl_new_std(hdl, NULL, class_ctrl, 0, 0, 0, 0)) |
| 1501 | return hdl->error; |
| 1502 | |
| 1503 | if (hdl->error) |
| 1504 | return hdl->error; |
| 1505 | |
| 1506 | new_ref = kzalloc(sizeof(*new_ref), GFP_KERNEL); |
| 1507 | if (!new_ref) |
| 1508 | return handler_set_err(hdl, -ENOMEM); |
| 1509 | new_ref->ctrl = ctrl; |
| 1510 | if (ctrl->handler == hdl) { |
| 1511 | /* By default each control starts in a cluster of its own. |
| 1512 | new_ref->ctrl is basically a cluster array with one |
| 1513 | element, so that's perfect to use as the cluster pointer. |
| 1514 | But only do this for the handler that owns the control. */ |
| 1515 | ctrl->cluster = &new_ref->ctrl; |
| 1516 | ctrl->ncontrols = 1; |
| 1517 | } |
| 1518 | |
| 1519 | INIT_LIST_HEAD(&new_ref->node); |
| 1520 | |
Sakari Ailus | 77e7c4e | 2012-01-24 21:05:34 -0300 | [diff] [blame] | 1521 | mutex_lock(hdl->lock); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1522 | |
| 1523 | /* Add immediately at the end of the list if the list is empty, or if |
| 1524 | the last element in the list has a lower ID. |
| 1525 | This ensures that when elements are added in ascending order the |
| 1526 | insertion is an O(1) operation. */ |
| 1527 | if (list_empty(&hdl->ctrl_refs) || id > node2id(hdl->ctrl_refs.prev)) { |
| 1528 | list_add_tail(&new_ref->node, &hdl->ctrl_refs); |
| 1529 | goto insert_in_hash; |
| 1530 | } |
| 1531 | |
| 1532 | /* Find insert position in sorted list */ |
| 1533 | list_for_each_entry(ref, &hdl->ctrl_refs, node) { |
| 1534 | if (ref->ctrl->id < id) |
| 1535 | continue; |
| 1536 | /* Don't add duplicates */ |
| 1537 | if (ref->ctrl->id == id) { |
| 1538 | kfree(new_ref); |
| 1539 | goto unlock; |
| 1540 | } |
| 1541 | list_add(&new_ref->node, ref->node.prev); |
| 1542 | break; |
| 1543 | } |
| 1544 | |
| 1545 | insert_in_hash: |
| 1546 | /* Insert the control node in the hash */ |
| 1547 | new_ref->next = hdl->buckets[bucket]; |
| 1548 | hdl->buckets[bucket] = new_ref; |
| 1549 | |
| 1550 | unlock: |
Sakari Ailus | 77e7c4e | 2012-01-24 21:05:34 -0300 | [diff] [blame] | 1551 | mutex_unlock(hdl->lock); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1552 | return 0; |
| 1553 | } |
| 1554 | |
| 1555 | /* Add a new control */ |
| 1556 | static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl, |
| 1557 | const struct v4l2_ctrl_ops *ops, |
| 1558 | u32 id, const char *name, enum v4l2_ctrl_type type, |
| 1559 | s32 min, s32 max, u32 step, s32 def, |
Sakari Ailus | ce580fe | 2011-08-04 13:51:11 -0300 | [diff] [blame] | 1560 | u32 flags, const char * const *qmenu, |
| 1561 | const s64 *qmenu_int, void *priv) |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1562 | { |
| 1563 | struct v4l2_ctrl *ctrl; |
| 1564 | unsigned sz_extra = 0; |
Sylwester Nawrocki | 2ccbe77 | 2013-01-19 15:51:55 -0300 | [diff] [blame] | 1565 | int err; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1566 | |
| 1567 | if (hdl->error) |
| 1568 | return NULL; |
| 1569 | |
| 1570 | /* Sanity checks */ |
| 1571 | if (id == 0 || name == NULL || id >= V4L2_CID_PRIVATE_BASE || |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1572 | (type == V4L2_CTRL_TYPE_MENU && qmenu == NULL) || |
Sylwester Nawrocki | 2ccbe77 | 2013-01-19 15:51:55 -0300 | [diff] [blame] | 1573 | (type == V4L2_CTRL_TYPE_INTEGER_MENU && qmenu_int == NULL)) { |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1574 | handler_set_err(hdl, -ERANGE); |
| 1575 | return NULL; |
| 1576 | } |
Sylwester Nawrocki | 2ccbe77 | 2013-01-19 15:51:55 -0300 | [diff] [blame] | 1577 | err = check_range(type, min, max, step, def); |
| 1578 | if (err) { |
| 1579 | handler_set_err(hdl, err); |
Hans Verkuil | 02ac048 | 2010-12-29 14:27:05 -0300 | [diff] [blame] | 1580 | return NULL; |
| 1581 | } |
Hans Verkuil | fa4d709 | 2011-05-23 04:07:05 -0300 | [diff] [blame] | 1582 | if (type == V4L2_CTRL_TYPE_BITMASK && ((def & ~max) || min || step)) { |
| 1583 | handler_set_err(hdl, -ERANGE); |
| 1584 | return NULL; |
| 1585 | } |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1586 | |
| 1587 | if (type == V4L2_CTRL_TYPE_BUTTON) |
| 1588 | flags |= V4L2_CTRL_FLAG_WRITE_ONLY; |
| 1589 | else if (type == V4L2_CTRL_TYPE_CTRL_CLASS) |
| 1590 | flags |= V4L2_CTRL_FLAG_READ_ONLY; |
| 1591 | else if (type == V4L2_CTRL_TYPE_STRING) |
| 1592 | sz_extra += 2 * (max + 1); |
| 1593 | |
| 1594 | ctrl = kzalloc(sizeof(*ctrl) + sz_extra, GFP_KERNEL); |
| 1595 | if (ctrl == NULL) { |
| 1596 | handler_set_err(hdl, -ENOMEM); |
| 1597 | return NULL; |
| 1598 | } |
| 1599 | |
| 1600 | INIT_LIST_HEAD(&ctrl->node); |
Hans Verkuil | 77068d3 | 2011-06-13 18:55:58 -0300 | [diff] [blame] | 1601 | INIT_LIST_HEAD(&ctrl->ev_subs); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1602 | ctrl->handler = hdl; |
| 1603 | ctrl->ops = ops; |
| 1604 | ctrl->id = id; |
| 1605 | ctrl->name = name; |
| 1606 | ctrl->type = type; |
| 1607 | ctrl->flags = flags; |
| 1608 | ctrl->minimum = min; |
| 1609 | ctrl->maximum = max; |
| 1610 | ctrl->step = step; |
Sakari Ailus | ce580fe | 2011-08-04 13:51:11 -0300 | [diff] [blame] | 1611 | if (type == V4L2_CTRL_TYPE_MENU) |
| 1612 | ctrl->qmenu = qmenu; |
| 1613 | else if (type == V4L2_CTRL_TYPE_INTEGER_MENU) |
| 1614 | ctrl->qmenu_int = qmenu_int; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1615 | ctrl->priv = priv; |
| 1616 | ctrl->cur.val = ctrl->val = ctrl->default_value = def; |
| 1617 | |
| 1618 | if (ctrl->type == V4L2_CTRL_TYPE_STRING) { |
| 1619 | ctrl->cur.string = (char *)&ctrl[1] + sz_extra - (max + 1); |
| 1620 | ctrl->string = (char *)&ctrl[1] + sz_extra - 2 * (max + 1); |
| 1621 | if (ctrl->minimum) |
| 1622 | memset(ctrl->cur.string, ' ', ctrl->minimum); |
| 1623 | } |
| 1624 | if (handler_new_ref(hdl, ctrl)) { |
| 1625 | kfree(ctrl); |
| 1626 | return NULL; |
| 1627 | } |
Sakari Ailus | 77e7c4e | 2012-01-24 21:05:34 -0300 | [diff] [blame] | 1628 | mutex_lock(hdl->lock); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1629 | list_add_tail(&ctrl->node, &hdl->ctrls); |
Sakari Ailus | 77e7c4e | 2012-01-24 21:05:34 -0300 | [diff] [blame] | 1630 | mutex_unlock(hdl->lock); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1631 | return ctrl; |
| 1632 | } |
| 1633 | |
| 1634 | struct v4l2_ctrl *v4l2_ctrl_new_custom(struct v4l2_ctrl_handler *hdl, |
| 1635 | const struct v4l2_ctrl_config *cfg, void *priv) |
| 1636 | { |
| 1637 | bool is_menu; |
| 1638 | struct v4l2_ctrl *ctrl; |
| 1639 | const char *name = cfg->name; |
Hans Verkuil | 513521e | 2010-12-29 14:25:52 -0300 | [diff] [blame] | 1640 | const char * const *qmenu = cfg->qmenu; |
Sakari Ailus | ce580fe | 2011-08-04 13:51:11 -0300 | [diff] [blame] | 1641 | const s64 *qmenu_int = cfg->qmenu_int; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1642 | enum v4l2_ctrl_type type = cfg->type; |
| 1643 | u32 flags = cfg->flags; |
| 1644 | s32 min = cfg->min; |
| 1645 | s32 max = cfg->max; |
| 1646 | u32 step = cfg->step; |
| 1647 | s32 def = cfg->def; |
| 1648 | |
| 1649 | if (name == NULL) |
| 1650 | v4l2_ctrl_fill(cfg->id, &name, &type, &min, &max, &step, |
| 1651 | &def, &flags); |
| 1652 | |
Sakari Ailus | ce580fe | 2011-08-04 13:51:11 -0300 | [diff] [blame] | 1653 | is_menu = (cfg->type == V4L2_CTRL_TYPE_MENU || |
| 1654 | cfg->type == V4L2_CTRL_TYPE_INTEGER_MENU); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1655 | if (is_menu) |
| 1656 | WARN_ON(step); |
| 1657 | else |
| 1658 | WARN_ON(cfg->menu_skip_mask); |
Sakari Ailus | ce580fe | 2011-08-04 13:51:11 -0300 | [diff] [blame] | 1659 | if (cfg->type == V4L2_CTRL_TYPE_MENU && qmenu == NULL) |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1660 | qmenu = v4l2_ctrl_get_menu(cfg->id); |
Sakari Ailus | ce580fe | 2011-08-04 13:51:11 -0300 | [diff] [blame] | 1661 | else if (cfg->type == V4L2_CTRL_TYPE_INTEGER_MENU && |
| 1662 | qmenu_int == NULL) { |
| 1663 | handler_set_err(hdl, -EINVAL); |
| 1664 | return NULL; |
| 1665 | } |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1666 | |
| 1667 | ctrl = v4l2_ctrl_new(hdl, cfg->ops, cfg->id, name, |
| 1668 | type, min, max, |
| 1669 | is_menu ? cfg->menu_skip_mask : step, |
Sakari Ailus | ce580fe | 2011-08-04 13:51:11 -0300 | [diff] [blame] | 1670 | def, flags, qmenu, qmenu_int, priv); |
Hans Verkuil | 8836510 | 2011-08-26 07:35:14 -0300 | [diff] [blame] | 1671 | if (ctrl) |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1672 | ctrl->is_private = cfg->is_private; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1673 | return ctrl; |
| 1674 | } |
| 1675 | EXPORT_SYMBOL(v4l2_ctrl_new_custom); |
| 1676 | |
| 1677 | /* Helper function for standard non-menu controls */ |
| 1678 | struct v4l2_ctrl *v4l2_ctrl_new_std(struct v4l2_ctrl_handler *hdl, |
| 1679 | const struct v4l2_ctrl_ops *ops, |
| 1680 | u32 id, s32 min, s32 max, u32 step, s32 def) |
| 1681 | { |
| 1682 | const char *name; |
| 1683 | enum v4l2_ctrl_type type; |
| 1684 | u32 flags; |
| 1685 | |
| 1686 | v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags); |
Sakari Ailus | ce580fe | 2011-08-04 13:51:11 -0300 | [diff] [blame] | 1687 | if (type == V4L2_CTRL_TYPE_MENU |
| 1688 | || type == V4L2_CTRL_TYPE_INTEGER_MENU) { |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1689 | handler_set_err(hdl, -EINVAL); |
| 1690 | return NULL; |
| 1691 | } |
| 1692 | return v4l2_ctrl_new(hdl, ops, id, name, type, |
Sakari Ailus | ce580fe | 2011-08-04 13:51:11 -0300 | [diff] [blame] | 1693 | min, max, step, def, flags, NULL, NULL, NULL); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1694 | } |
| 1695 | EXPORT_SYMBOL(v4l2_ctrl_new_std); |
| 1696 | |
| 1697 | /* Helper function for standard menu controls */ |
| 1698 | struct v4l2_ctrl *v4l2_ctrl_new_std_menu(struct v4l2_ctrl_handler *hdl, |
| 1699 | const struct v4l2_ctrl_ops *ops, |
| 1700 | u32 id, s32 max, s32 mask, s32 def) |
| 1701 | { |
Hans Verkuil | 513521e | 2010-12-29 14:25:52 -0300 | [diff] [blame] | 1702 | const char * const *qmenu = v4l2_ctrl_get_menu(id); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1703 | const char *name; |
| 1704 | enum v4l2_ctrl_type type; |
| 1705 | s32 min; |
| 1706 | s32 step; |
| 1707 | u32 flags; |
| 1708 | |
| 1709 | v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags); |
| 1710 | if (type != V4L2_CTRL_TYPE_MENU) { |
| 1711 | handler_set_err(hdl, -EINVAL); |
| 1712 | return NULL; |
| 1713 | } |
| 1714 | return v4l2_ctrl_new(hdl, ops, id, name, type, |
Sakari Ailus | ce580fe | 2011-08-04 13:51:11 -0300 | [diff] [blame] | 1715 | 0, max, mask, def, flags, qmenu, NULL, NULL); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1716 | } |
| 1717 | EXPORT_SYMBOL(v4l2_ctrl_new_std_menu); |
| 1718 | |
Lad, Prabhakar | 117a711 | 2012-09-18 15:54:38 -0300 | [diff] [blame] | 1719 | /* Helper function for standard menu controls with driver defined menu */ |
| 1720 | struct v4l2_ctrl *v4l2_ctrl_new_std_menu_items(struct v4l2_ctrl_handler *hdl, |
| 1721 | const struct v4l2_ctrl_ops *ops, u32 id, s32 max, |
| 1722 | s32 mask, s32 def, const char * const *qmenu) |
| 1723 | { |
| 1724 | enum v4l2_ctrl_type type; |
| 1725 | const char *name; |
| 1726 | u32 flags; |
| 1727 | s32 step; |
| 1728 | s32 min; |
| 1729 | |
| 1730 | /* v4l2_ctrl_new_std_menu_items() should only be called for |
| 1731 | * standard controls without a standard menu. |
| 1732 | */ |
| 1733 | if (v4l2_ctrl_get_menu(id)) { |
| 1734 | handler_set_err(hdl, -EINVAL); |
| 1735 | return NULL; |
| 1736 | } |
| 1737 | |
| 1738 | v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags); |
| 1739 | if (type != V4L2_CTRL_TYPE_MENU || qmenu == NULL) { |
| 1740 | handler_set_err(hdl, -EINVAL); |
| 1741 | return NULL; |
| 1742 | } |
| 1743 | return v4l2_ctrl_new(hdl, ops, id, name, type, 0, max, mask, def, |
| 1744 | flags, qmenu, NULL, NULL); |
| 1745 | |
| 1746 | } |
| 1747 | EXPORT_SYMBOL(v4l2_ctrl_new_std_menu_items); |
| 1748 | |
Sylwester Nawrocki | 515f328 | 2012-05-06 15:30:44 -0300 | [diff] [blame] | 1749 | /* Helper function for standard integer menu controls */ |
| 1750 | struct v4l2_ctrl *v4l2_ctrl_new_int_menu(struct v4l2_ctrl_handler *hdl, |
| 1751 | const struct v4l2_ctrl_ops *ops, |
| 1752 | u32 id, s32 max, s32 def, const s64 *qmenu_int) |
| 1753 | { |
| 1754 | const char *name; |
| 1755 | enum v4l2_ctrl_type type; |
| 1756 | s32 min; |
| 1757 | s32 step; |
| 1758 | u32 flags; |
| 1759 | |
| 1760 | v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags); |
| 1761 | if (type != V4L2_CTRL_TYPE_INTEGER_MENU) { |
| 1762 | handler_set_err(hdl, -EINVAL); |
| 1763 | return NULL; |
| 1764 | } |
| 1765 | return v4l2_ctrl_new(hdl, ops, id, name, type, |
| 1766 | 0, max, 0, def, flags, NULL, qmenu_int, NULL); |
| 1767 | } |
| 1768 | EXPORT_SYMBOL(v4l2_ctrl_new_int_menu); |
| 1769 | |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1770 | /* Add a control from another handler to this handler */ |
| 1771 | struct v4l2_ctrl *v4l2_ctrl_add_ctrl(struct v4l2_ctrl_handler *hdl, |
| 1772 | struct v4l2_ctrl *ctrl) |
| 1773 | { |
| 1774 | if (hdl == NULL || hdl->error) |
| 1775 | return NULL; |
| 1776 | if (ctrl == NULL) { |
| 1777 | handler_set_err(hdl, -EINVAL); |
| 1778 | return NULL; |
| 1779 | } |
| 1780 | if (ctrl->handler == hdl) |
| 1781 | return ctrl; |
| 1782 | return handler_new_ref(hdl, ctrl) ? NULL : ctrl; |
| 1783 | } |
| 1784 | EXPORT_SYMBOL(v4l2_ctrl_add_ctrl); |
| 1785 | |
| 1786 | /* Add the controls from another handler to our own. */ |
| 1787 | int v4l2_ctrl_add_handler(struct v4l2_ctrl_handler *hdl, |
Hans Verkuil | 34a6b7d | 2012-09-14 07:15:03 -0300 | [diff] [blame] | 1788 | struct v4l2_ctrl_handler *add, |
| 1789 | bool (*filter)(const struct v4l2_ctrl *ctrl)) |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1790 | { |
Hans Verkuil | 072e660 | 2012-03-02 12:41:25 -0300 | [diff] [blame] | 1791 | struct v4l2_ctrl_ref *ref; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1792 | int ret = 0; |
| 1793 | |
| 1794 | /* Do nothing if either handler is NULL or if they are the same */ |
| 1795 | if (!hdl || !add || hdl == add) |
| 1796 | return 0; |
| 1797 | if (hdl->error) |
| 1798 | return hdl->error; |
Sakari Ailus | 77e7c4e | 2012-01-24 21:05:34 -0300 | [diff] [blame] | 1799 | mutex_lock(add->lock); |
Hans Verkuil | 072e660 | 2012-03-02 12:41:25 -0300 | [diff] [blame] | 1800 | list_for_each_entry(ref, &add->ctrl_refs, node) { |
| 1801 | struct v4l2_ctrl *ctrl = ref->ctrl; |
| 1802 | |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1803 | /* Skip handler-private controls. */ |
| 1804 | if (ctrl->is_private) |
| 1805 | continue; |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 1806 | /* And control classes */ |
| 1807 | if (ctrl->type == V4L2_CTRL_TYPE_CTRL_CLASS) |
| 1808 | continue; |
Hans Verkuil | 34a6b7d | 2012-09-14 07:15:03 -0300 | [diff] [blame] | 1809 | /* Filter any unwanted controls */ |
| 1810 | if (filter && !filter(ctrl)) |
| 1811 | continue; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1812 | ret = handler_new_ref(hdl, ctrl); |
| 1813 | if (ret) |
| 1814 | break; |
| 1815 | } |
Sakari Ailus | 77e7c4e | 2012-01-24 21:05:34 -0300 | [diff] [blame] | 1816 | mutex_unlock(add->lock); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1817 | return ret; |
| 1818 | } |
| 1819 | EXPORT_SYMBOL(v4l2_ctrl_add_handler); |
| 1820 | |
Hans Verkuil | 34a6b7d | 2012-09-14 07:15:03 -0300 | [diff] [blame] | 1821 | bool v4l2_ctrl_radio_filter(const struct v4l2_ctrl *ctrl) |
| 1822 | { |
| 1823 | if (V4L2_CTRL_ID2CLASS(ctrl->id) == V4L2_CTRL_CLASS_FM_TX) |
| 1824 | return true; |
| 1825 | switch (ctrl->id) { |
| 1826 | case V4L2_CID_AUDIO_MUTE: |
| 1827 | case V4L2_CID_AUDIO_VOLUME: |
| 1828 | case V4L2_CID_AUDIO_BALANCE: |
| 1829 | case V4L2_CID_AUDIO_BASS: |
| 1830 | case V4L2_CID_AUDIO_TREBLE: |
| 1831 | case V4L2_CID_AUDIO_LOUDNESS: |
| 1832 | return true; |
| 1833 | default: |
| 1834 | break; |
| 1835 | } |
| 1836 | return false; |
| 1837 | } |
| 1838 | EXPORT_SYMBOL(v4l2_ctrl_radio_filter); |
| 1839 | |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1840 | /* Cluster controls */ |
| 1841 | void v4l2_ctrl_cluster(unsigned ncontrols, struct v4l2_ctrl **controls) |
| 1842 | { |
Hans Verkuil | 5626b8c | 2011-08-26 07:53:53 -0300 | [diff] [blame] | 1843 | bool has_volatiles = false; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1844 | int i; |
| 1845 | |
| 1846 | /* The first control is the master control and it must not be NULL */ |
Hans Verkuil | 72d877c | 2011-06-10 05:44:36 -0300 | [diff] [blame] | 1847 | BUG_ON(ncontrols == 0 || controls[0] == NULL); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1848 | |
| 1849 | for (i = 0; i < ncontrols; i++) { |
| 1850 | if (controls[i]) { |
| 1851 | controls[i]->cluster = controls; |
| 1852 | controls[i]->ncontrols = ncontrols; |
Hans Verkuil | 5626b8c | 2011-08-26 07:53:53 -0300 | [diff] [blame] | 1853 | if (controls[i]->flags & V4L2_CTRL_FLAG_VOLATILE) |
| 1854 | has_volatiles = true; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1855 | } |
| 1856 | } |
Hans Verkuil | 5626b8c | 2011-08-26 07:53:53 -0300 | [diff] [blame] | 1857 | controls[0]->has_volatiles = has_volatiles; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1858 | } |
| 1859 | EXPORT_SYMBOL(v4l2_ctrl_cluster); |
| 1860 | |
Hans Verkuil | 72d877c | 2011-06-10 05:44:36 -0300 | [diff] [blame] | 1861 | void v4l2_ctrl_auto_cluster(unsigned ncontrols, struct v4l2_ctrl **controls, |
| 1862 | u8 manual_val, bool set_volatile) |
| 1863 | { |
| 1864 | struct v4l2_ctrl *master = controls[0]; |
Hans Verkuil | 5626b8c | 2011-08-26 07:53:53 -0300 | [diff] [blame] | 1865 | u32 flag = 0; |
Hans Verkuil | 72d877c | 2011-06-10 05:44:36 -0300 | [diff] [blame] | 1866 | int i; |
| 1867 | |
| 1868 | v4l2_ctrl_cluster(ncontrols, controls); |
| 1869 | WARN_ON(ncontrols <= 1); |
Hans Verkuil | 82a7c04 | 2011-06-28 10:43:13 -0300 | [diff] [blame] | 1870 | WARN_ON(manual_val < master->minimum || manual_val > master->maximum); |
Hans Verkuil | 5626b8c | 2011-08-26 07:53:53 -0300 | [diff] [blame] | 1871 | WARN_ON(set_volatile && !has_op(master, g_volatile_ctrl)); |
Hans Verkuil | 72d877c | 2011-06-10 05:44:36 -0300 | [diff] [blame] | 1872 | master->is_auto = true; |
Hans Verkuil | 5626b8c | 2011-08-26 07:53:53 -0300 | [diff] [blame] | 1873 | master->has_volatiles = set_volatile; |
Hans Verkuil | 72d877c | 2011-06-10 05:44:36 -0300 | [diff] [blame] | 1874 | master->manual_mode_value = manual_val; |
| 1875 | master->flags |= V4L2_CTRL_FLAG_UPDATE; |
Hans Verkuil | 5626b8c | 2011-08-26 07:53:53 -0300 | [diff] [blame] | 1876 | |
| 1877 | if (!is_cur_manual(master)) |
| 1878 | flag = V4L2_CTRL_FLAG_INACTIVE | |
| 1879 | (set_volatile ? V4L2_CTRL_FLAG_VOLATILE : 0); |
Hans Verkuil | 72d877c | 2011-06-10 05:44:36 -0300 | [diff] [blame] | 1880 | |
| 1881 | for (i = 1; i < ncontrols; i++) |
Hans Verkuil | 8836510 | 2011-08-26 07:35:14 -0300 | [diff] [blame] | 1882 | if (controls[i]) |
Hans Verkuil | 72d877c | 2011-06-10 05:44:36 -0300 | [diff] [blame] | 1883 | controls[i]->flags |= flag; |
Hans Verkuil | 72d877c | 2011-06-10 05:44:36 -0300 | [diff] [blame] | 1884 | } |
| 1885 | EXPORT_SYMBOL(v4l2_ctrl_auto_cluster); |
| 1886 | |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1887 | /* Activate/deactivate a control. */ |
| 1888 | void v4l2_ctrl_activate(struct v4l2_ctrl *ctrl, bool active) |
| 1889 | { |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 1890 | /* invert since the actual flag is called 'inactive' */ |
| 1891 | bool inactive = !active; |
| 1892 | bool old; |
| 1893 | |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1894 | if (ctrl == NULL) |
| 1895 | return; |
| 1896 | |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 1897 | if (inactive) |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1898 | /* set V4L2_CTRL_FLAG_INACTIVE */ |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 1899 | old = test_and_set_bit(4, &ctrl->flags); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1900 | else |
| 1901 | /* clear V4L2_CTRL_FLAG_INACTIVE */ |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 1902 | old = test_and_clear_bit(4, &ctrl->flags); |
| 1903 | if (old != inactive) |
| 1904 | send_event(NULL, ctrl, V4L2_EVENT_CTRL_CH_FLAGS); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1905 | } |
| 1906 | EXPORT_SYMBOL(v4l2_ctrl_activate); |
| 1907 | |
| 1908 | /* Grab/ungrab a control. |
| 1909 | Typically used when streaming starts and you want to grab controls, |
| 1910 | preventing the user from changing them. |
| 1911 | |
| 1912 | Just call this and the framework will block any attempts to change |
| 1913 | these controls. */ |
| 1914 | void v4l2_ctrl_grab(struct v4l2_ctrl *ctrl, bool grabbed) |
| 1915 | { |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 1916 | bool old; |
| 1917 | |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1918 | if (ctrl == NULL) |
| 1919 | return; |
| 1920 | |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 1921 | v4l2_ctrl_lock(ctrl); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1922 | if (grabbed) |
| 1923 | /* set V4L2_CTRL_FLAG_GRABBED */ |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 1924 | old = test_and_set_bit(1, &ctrl->flags); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1925 | else |
| 1926 | /* clear V4L2_CTRL_FLAG_GRABBED */ |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 1927 | old = test_and_clear_bit(1, &ctrl->flags); |
| 1928 | if (old != grabbed) |
| 1929 | send_event(NULL, ctrl, V4L2_EVENT_CTRL_CH_FLAGS); |
| 1930 | v4l2_ctrl_unlock(ctrl); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1931 | } |
| 1932 | EXPORT_SYMBOL(v4l2_ctrl_grab); |
| 1933 | |
| 1934 | /* Log the control name and value */ |
| 1935 | static void log_ctrl(const struct v4l2_ctrl *ctrl, |
| 1936 | const char *prefix, const char *colon) |
| 1937 | { |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1938 | if (ctrl->flags & (V4L2_CTRL_FLAG_DISABLED | V4L2_CTRL_FLAG_WRITE_ONLY)) |
| 1939 | return; |
| 1940 | if (ctrl->type == V4L2_CTRL_TYPE_CTRL_CLASS) |
| 1941 | return; |
| 1942 | |
| 1943 | printk(KERN_INFO "%s%s%s: ", prefix, colon, ctrl->name); |
| 1944 | |
| 1945 | switch (ctrl->type) { |
| 1946 | case V4L2_CTRL_TYPE_INTEGER: |
| 1947 | printk(KERN_CONT "%d", ctrl->cur.val); |
| 1948 | break; |
| 1949 | case V4L2_CTRL_TYPE_BOOLEAN: |
| 1950 | printk(KERN_CONT "%s", ctrl->cur.val ? "true" : "false"); |
| 1951 | break; |
| 1952 | case V4L2_CTRL_TYPE_MENU: |
| 1953 | printk(KERN_CONT "%s", ctrl->qmenu[ctrl->cur.val]); |
| 1954 | break; |
Sakari Ailus | ce580fe | 2011-08-04 13:51:11 -0300 | [diff] [blame] | 1955 | case V4L2_CTRL_TYPE_INTEGER_MENU: |
| 1956 | printk(KERN_CONT "%lld", ctrl->qmenu_int[ctrl->cur.val]); |
| 1957 | break; |
Hans Verkuil | fa4d709 | 2011-05-23 04:07:05 -0300 | [diff] [blame] | 1958 | case V4L2_CTRL_TYPE_BITMASK: |
| 1959 | printk(KERN_CONT "0x%08x", ctrl->cur.val); |
| 1960 | break; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1961 | case V4L2_CTRL_TYPE_INTEGER64: |
| 1962 | printk(KERN_CONT "%lld", ctrl->cur.val64); |
| 1963 | break; |
| 1964 | case V4L2_CTRL_TYPE_STRING: |
| 1965 | printk(KERN_CONT "%s", ctrl->cur.string); |
| 1966 | break; |
| 1967 | default: |
| 1968 | printk(KERN_CONT "unknown type %d", ctrl->type); |
| 1969 | break; |
| 1970 | } |
Hans Verkuil | 8836510 | 2011-08-26 07:35:14 -0300 | [diff] [blame] | 1971 | if (ctrl->flags & (V4L2_CTRL_FLAG_INACTIVE | |
| 1972 | V4L2_CTRL_FLAG_GRABBED | |
| 1973 | V4L2_CTRL_FLAG_VOLATILE)) { |
| 1974 | if (ctrl->flags & V4L2_CTRL_FLAG_INACTIVE) |
| 1975 | printk(KERN_CONT " inactive"); |
| 1976 | if (ctrl->flags & V4L2_CTRL_FLAG_GRABBED) |
| 1977 | printk(KERN_CONT " grabbed"); |
| 1978 | if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) |
| 1979 | printk(KERN_CONT " volatile"); |
| 1980 | } |
| 1981 | printk(KERN_CONT "\n"); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 1982 | } |
| 1983 | |
| 1984 | /* Log all controls owned by the handler */ |
| 1985 | void v4l2_ctrl_handler_log_status(struct v4l2_ctrl_handler *hdl, |
| 1986 | const char *prefix) |
| 1987 | { |
| 1988 | struct v4l2_ctrl *ctrl; |
| 1989 | const char *colon = ""; |
| 1990 | int len; |
| 1991 | |
| 1992 | if (hdl == NULL) |
| 1993 | return; |
| 1994 | if (prefix == NULL) |
| 1995 | prefix = ""; |
| 1996 | len = strlen(prefix); |
| 1997 | if (len && prefix[len - 1] != ' ') |
| 1998 | colon = ": "; |
Sakari Ailus | 77e7c4e | 2012-01-24 21:05:34 -0300 | [diff] [blame] | 1999 | mutex_lock(hdl->lock); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2000 | list_for_each_entry(ctrl, &hdl->ctrls, node) |
| 2001 | if (!(ctrl->flags & V4L2_CTRL_FLAG_DISABLED)) |
| 2002 | log_ctrl(ctrl, prefix, colon); |
Sakari Ailus | 77e7c4e | 2012-01-24 21:05:34 -0300 | [diff] [blame] | 2003 | mutex_unlock(hdl->lock); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2004 | } |
| 2005 | EXPORT_SYMBOL(v4l2_ctrl_handler_log_status); |
| 2006 | |
Sylwester Nawrocki | ffa9b9f | 2013-01-22 19:01:02 -0300 | [diff] [blame] | 2007 | int v4l2_ctrl_subdev_log_status(struct v4l2_subdev *sd) |
| 2008 | { |
| 2009 | v4l2_ctrl_handler_log_status(sd->ctrl_handler, sd->name); |
| 2010 | return 0; |
| 2011 | } |
| 2012 | EXPORT_SYMBOL(v4l2_ctrl_subdev_log_status); |
| 2013 | |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2014 | /* Call s_ctrl for all controls owned by the handler */ |
| 2015 | int v4l2_ctrl_handler_setup(struct v4l2_ctrl_handler *hdl) |
| 2016 | { |
| 2017 | struct v4l2_ctrl *ctrl; |
| 2018 | int ret = 0; |
| 2019 | |
| 2020 | if (hdl == NULL) |
| 2021 | return 0; |
Sakari Ailus | 77e7c4e | 2012-01-24 21:05:34 -0300 | [diff] [blame] | 2022 | mutex_lock(hdl->lock); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2023 | list_for_each_entry(ctrl, &hdl->ctrls, node) |
| 2024 | ctrl->done = false; |
| 2025 | |
| 2026 | list_for_each_entry(ctrl, &hdl->ctrls, node) { |
| 2027 | struct v4l2_ctrl *master = ctrl->cluster[0]; |
| 2028 | int i; |
| 2029 | |
| 2030 | /* Skip if this control was already handled by a cluster. */ |
Hans Verkuil | 71c6c4c | 2011-06-14 11:01:52 -0300 | [diff] [blame] | 2031 | /* Skip button controls and read-only controls. */ |
| 2032 | if (ctrl->done || ctrl->type == V4L2_CTRL_TYPE_BUTTON || |
| 2033 | (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY)) |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2034 | continue; |
| 2035 | |
Hans Verkuil | 2a86379 | 2011-01-11 14:45:03 -0300 | [diff] [blame] | 2036 | for (i = 0; i < master->ncontrols; i++) { |
| 2037 | if (master->cluster[i]) { |
| 2038 | cur_to_new(master->cluster[i]); |
| 2039 | master->cluster[i]->is_new = 1; |
Hans Verkuil | 71c6c4c | 2011-06-14 11:01:52 -0300 | [diff] [blame] | 2040 | master->cluster[i]->done = true; |
Hans Verkuil | 2a86379 | 2011-01-11 14:45:03 -0300 | [diff] [blame] | 2041 | } |
| 2042 | } |
Hans Verkuil | 54c911e | 2011-05-25 06:04:58 -0300 | [diff] [blame] | 2043 | ret = call_op(master, s_ctrl); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2044 | if (ret) |
| 2045 | break; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2046 | } |
Sakari Ailus | 77e7c4e | 2012-01-24 21:05:34 -0300 | [diff] [blame] | 2047 | mutex_unlock(hdl->lock); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2048 | return ret; |
| 2049 | } |
| 2050 | EXPORT_SYMBOL(v4l2_ctrl_handler_setup); |
| 2051 | |
| 2052 | /* Implement VIDIOC_QUERYCTRL */ |
| 2053 | int v4l2_queryctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_queryctrl *qc) |
| 2054 | { |
| 2055 | u32 id = qc->id & V4L2_CTRL_ID_MASK; |
| 2056 | struct v4l2_ctrl_ref *ref; |
| 2057 | struct v4l2_ctrl *ctrl; |
| 2058 | |
| 2059 | if (hdl == NULL) |
| 2060 | return -EINVAL; |
| 2061 | |
Sakari Ailus | 77e7c4e | 2012-01-24 21:05:34 -0300 | [diff] [blame] | 2062 | mutex_lock(hdl->lock); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2063 | |
| 2064 | /* Try to find it */ |
| 2065 | ref = find_ref(hdl, id); |
| 2066 | |
| 2067 | if ((qc->id & V4L2_CTRL_FLAG_NEXT_CTRL) && !list_empty(&hdl->ctrl_refs)) { |
| 2068 | /* Find the next control with ID > qc->id */ |
| 2069 | |
| 2070 | /* Did we reach the end of the control list? */ |
| 2071 | if (id >= node2id(hdl->ctrl_refs.prev)) { |
| 2072 | ref = NULL; /* Yes, so there is no next control */ |
| 2073 | } else if (ref) { |
| 2074 | /* We found a control with the given ID, so just get |
| 2075 | the next one in the list. */ |
| 2076 | ref = list_entry(ref->node.next, typeof(*ref), node); |
| 2077 | } else { |
| 2078 | /* No control with the given ID exists, so start |
| 2079 | searching for the next largest ID. We know there |
| 2080 | is one, otherwise the first 'if' above would have |
| 2081 | been true. */ |
| 2082 | list_for_each_entry(ref, &hdl->ctrl_refs, node) |
| 2083 | if (id < ref->ctrl->id) |
| 2084 | break; |
| 2085 | } |
| 2086 | } |
Sakari Ailus | 77e7c4e | 2012-01-24 21:05:34 -0300 | [diff] [blame] | 2087 | mutex_unlock(hdl->lock); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2088 | if (!ref) |
| 2089 | return -EINVAL; |
| 2090 | |
| 2091 | ctrl = ref->ctrl; |
| 2092 | memset(qc, 0, sizeof(*qc)); |
Hans Verkuil | 829fb2d | 2011-01-16 11:21:40 -0300 | [diff] [blame] | 2093 | if (id >= V4L2_CID_PRIVATE_BASE) |
| 2094 | qc->id = id; |
| 2095 | else |
| 2096 | qc->id = ctrl->id; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2097 | strlcpy(qc->name, ctrl->name, sizeof(qc->name)); |
| 2098 | qc->minimum = ctrl->minimum; |
| 2099 | qc->maximum = ctrl->maximum; |
| 2100 | qc->default_value = ctrl->default_value; |
Sakari Ailus | ce580fe | 2011-08-04 13:51:11 -0300 | [diff] [blame] | 2101 | if (ctrl->type == V4L2_CTRL_TYPE_MENU |
| 2102 | || ctrl->type == V4L2_CTRL_TYPE_INTEGER_MENU) |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2103 | qc->step = 1; |
| 2104 | else |
| 2105 | qc->step = ctrl->step; |
| 2106 | qc->flags = ctrl->flags; |
| 2107 | qc->type = ctrl->type; |
| 2108 | return 0; |
| 2109 | } |
| 2110 | EXPORT_SYMBOL(v4l2_queryctrl); |
| 2111 | |
| 2112 | int v4l2_subdev_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc) |
| 2113 | { |
Hans Verkuil | 87a0c94 | 2011-02-22 12:31:07 -0300 | [diff] [blame] | 2114 | if (qc->id & V4L2_CTRL_FLAG_NEXT_CTRL) |
| 2115 | return -EINVAL; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2116 | return v4l2_queryctrl(sd->ctrl_handler, qc); |
| 2117 | } |
| 2118 | EXPORT_SYMBOL(v4l2_subdev_queryctrl); |
| 2119 | |
| 2120 | /* Implement VIDIOC_QUERYMENU */ |
| 2121 | int v4l2_querymenu(struct v4l2_ctrl_handler *hdl, struct v4l2_querymenu *qm) |
| 2122 | { |
| 2123 | struct v4l2_ctrl *ctrl; |
| 2124 | u32 i = qm->index; |
| 2125 | |
| 2126 | ctrl = v4l2_ctrl_find(hdl, qm->id); |
| 2127 | if (!ctrl) |
| 2128 | return -EINVAL; |
| 2129 | |
| 2130 | qm->reserved = 0; |
| 2131 | /* Sanity checks */ |
Sakari Ailus | ce580fe | 2011-08-04 13:51:11 -0300 | [diff] [blame] | 2132 | switch (ctrl->type) { |
| 2133 | case V4L2_CTRL_TYPE_MENU: |
| 2134 | if (ctrl->qmenu == NULL) |
| 2135 | return -EINVAL; |
| 2136 | break; |
| 2137 | case V4L2_CTRL_TYPE_INTEGER_MENU: |
| 2138 | if (ctrl->qmenu_int == NULL) |
| 2139 | return -EINVAL; |
| 2140 | break; |
| 2141 | default: |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2142 | return -EINVAL; |
Sakari Ailus | ce580fe | 2011-08-04 13:51:11 -0300 | [diff] [blame] | 2143 | } |
| 2144 | |
| 2145 | if (i < ctrl->minimum || i > ctrl->maximum) |
| 2146 | return -EINVAL; |
| 2147 | |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2148 | /* Use mask to see if this menu item should be skipped */ |
| 2149 | if (ctrl->menu_skip_mask & (1 << i)) |
| 2150 | return -EINVAL; |
| 2151 | /* Empty menu items should also be skipped */ |
Sakari Ailus | ce580fe | 2011-08-04 13:51:11 -0300 | [diff] [blame] | 2152 | if (ctrl->type == V4L2_CTRL_TYPE_MENU) { |
| 2153 | if (ctrl->qmenu[i] == NULL || ctrl->qmenu[i][0] == '\0') |
| 2154 | return -EINVAL; |
| 2155 | strlcpy(qm->name, ctrl->qmenu[i], sizeof(qm->name)); |
| 2156 | } else { |
| 2157 | qm->value = ctrl->qmenu_int[i]; |
| 2158 | } |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2159 | return 0; |
| 2160 | } |
| 2161 | EXPORT_SYMBOL(v4l2_querymenu); |
| 2162 | |
| 2163 | int v4l2_subdev_querymenu(struct v4l2_subdev *sd, struct v4l2_querymenu *qm) |
| 2164 | { |
| 2165 | return v4l2_querymenu(sd->ctrl_handler, qm); |
| 2166 | } |
| 2167 | EXPORT_SYMBOL(v4l2_subdev_querymenu); |
| 2168 | |
| 2169 | |
| 2170 | |
| 2171 | /* Some general notes on the atomic requirements of VIDIOC_G/TRY/S_EXT_CTRLS: |
| 2172 | |
| 2173 | It is not a fully atomic operation, just best-effort only. After all, if |
| 2174 | multiple controls have to be set through multiple i2c writes (for example) |
| 2175 | then some initial writes may succeed while others fail. Thus leaving the |
| 2176 | system in an inconsistent state. The question is how much effort you are |
| 2177 | willing to spend on trying to make something atomic that really isn't. |
| 2178 | |
| 2179 | From the point of view of an application the main requirement is that |
| 2180 | when you call VIDIOC_S_EXT_CTRLS and some values are invalid then an |
| 2181 | error should be returned without actually affecting any controls. |
| 2182 | |
| 2183 | If all the values are correct, then it is acceptable to just give up |
| 2184 | in case of low-level errors. |
| 2185 | |
| 2186 | It is important though that the application can tell when only a partial |
| 2187 | configuration was done. The way we do that is through the error_idx field |
| 2188 | of struct v4l2_ext_controls: if that is equal to the count field then no |
| 2189 | controls were affected. Otherwise all controls before that index were |
| 2190 | successful in performing their 'get' or 'set' operation, the control at |
| 2191 | the given index failed, and you don't know what happened with the controls |
| 2192 | after the failed one. Since if they were part of a control cluster they |
| 2193 | could have been successfully processed (if a cluster member was encountered |
| 2194 | at index < error_idx), they could have failed (if a cluster member was at |
| 2195 | error_idx), or they may not have been processed yet (if the first cluster |
| 2196 | member appeared after error_idx). |
| 2197 | |
| 2198 | It is all fairly theoretical, though. In practice all you can do is to |
| 2199 | bail out. If error_idx == count, then it is an application bug. If |
| 2200 | error_idx < count then it is only an application bug if the error code was |
| 2201 | EBUSY. That usually means that something started streaming just when you |
| 2202 | tried to set the controls. In all other cases it is a driver/hardware |
| 2203 | problem and all you can do is to retry or bail out. |
| 2204 | |
| 2205 | Note that these rules do not apply to VIDIOC_TRY_EXT_CTRLS: since that |
| 2206 | never modifies controls the error_idx is just set to whatever control |
| 2207 | has an invalid value. |
| 2208 | */ |
| 2209 | |
| 2210 | /* Prepare for the extended g/s/try functions. |
| 2211 | Find the controls in the control array and do some basic checks. */ |
| 2212 | static int prepare_ext_ctrls(struct v4l2_ctrl_handler *hdl, |
| 2213 | struct v4l2_ext_controls *cs, |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2214 | struct v4l2_ctrl_helper *helpers) |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2215 | { |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2216 | struct v4l2_ctrl_helper *h; |
| 2217 | bool have_clusters = false; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2218 | u32 i; |
| 2219 | |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2220 | for (i = 0, h = helpers; i < cs->count; i++, h++) { |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2221 | struct v4l2_ext_control *c = &cs->controls[i]; |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2222 | struct v4l2_ctrl_ref *ref; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2223 | struct v4l2_ctrl *ctrl; |
| 2224 | u32 id = c->id & V4L2_CTRL_ID_MASK; |
| 2225 | |
Hans Verkuil | 37cd3b7 | 2011-06-07 04:40:04 -0300 | [diff] [blame] | 2226 | cs->error_idx = i; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2227 | |
| 2228 | if (cs->ctrl_class && V4L2_CTRL_ID2CLASS(id) != cs->ctrl_class) |
| 2229 | return -EINVAL; |
| 2230 | |
| 2231 | /* Old-style private controls are not allowed for |
| 2232 | extended controls */ |
| 2233 | if (id >= V4L2_CID_PRIVATE_BASE) |
| 2234 | return -EINVAL; |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2235 | ref = find_ref_lock(hdl, id); |
| 2236 | if (ref == NULL) |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2237 | return -EINVAL; |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2238 | ctrl = ref->ctrl; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2239 | if (ctrl->flags & V4L2_CTRL_FLAG_DISABLED) |
| 2240 | return -EINVAL; |
| 2241 | |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2242 | if (ctrl->cluster[0]->ncontrols > 1) |
| 2243 | have_clusters = true; |
| 2244 | if (ctrl->cluster[0] != ctrl) |
| 2245 | ref = find_ref_lock(hdl, ctrl->cluster[0]->id); |
| 2246 | /* Store the ref to the master control of the cluster */ |
| 2247 | h->mref = ref; |
| 2248 | h->ctrl = ctrl; |
| 2249 | /* Initially set next to 0, meaning that there is no other |
| 2250 | control in this helper array belonging to the same |
| 2251 | cluster */ |
| 2252 | h->next = 0; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2253 | } |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2254 | |
| 2255 | /* We are done if there were no controls that belong to a multi- |
| 2256 | control cluster. */ |
| 2257 | if (!have_clusters) |
| 2258 | return 0; |
| 2259 | |
| 2260 | /* The code below figures out in O(n) time which controls in the list |
| 2261 | belong to the same cluster. */ |
| 2262 | |
| 2263 | /* This has to be done with the handler lock taken. */ |
Sakari Ailus | 77e7c4e | 2012-01-24 21:05:34 -0300 | [diff] [blame] | 2264 | mutex_lock(hdl->lock); |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2265 | |
| 2266 | /* First zero the helper field in the master control references */ |
| 2267 | for (i = 0; i < cs->count; i++) |
Sachin Kamat | c082266 | 2012-07-10 07:14:46 -0300 | [diff] [blame] | 2268 | helpers[i].mref->helper = NULL; |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2269 | for (i = 0, h = helpers; i < cs->count; i++, h++) { |
| 2270 | struct v4l2_ctrl_ref *mref = h->mref; |
| 2271 | |
| 2272 | /* If the mref->helper is set, then it points to an earlier |
| 2273 | helper that belongs to the same cluster. */ |
| 2274 | if (mref->helper) { |
| 2275 | /* Set the next field of mref->helper to the current |
| 2276 | index: this means that that earlier helper now |
| 2277 | points to the next helper in the same cluster. */ |
| 2278 | mref->helper->next = i; |
| 2279 | /* mref should be set only for the first helper in the |
| 2280 | cluster, clear the others. */ |
| 2281 | h->mref = NULL; |
| 2282 | } |
| 2283 | /* Point the mref helper to the current helper struct. */ |
| 2284 | mref->helper = h; |
| 2285 | } |
Sakari Ailus | 77e7c4e | 2012-01-24 21:05:34 -0300 | [diff] [blame] | 2286 | mutex_unlock(hdl->lock); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2287 | return 0; |
| 2288 | } |
| 2289 | |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2290 | /* Handles the corner case where cs->count == 0. It checks whether the |
| 2291 | specified control class exists. If that class ID is 0, then it checks |
| 2292 | whether there are any controls at all. */ |
| 2293 | static int class_check(struct v4l2_ctrl_handler *hdl, u32 ctrl_class) |
| 2294 | { |
| 2295 | if (ctrl_class == 0) |
| 2296 | return list_empty(&hdl->ctrl_refs) ? -EINVAL : 0; |
| 2297 | return find_ref_lock(hdl, ctrl_class | 1) ? 0 : -EINVAL; |
| 2298 | } |
| 2299 | |
| 2300 | |
| 2301 | |
| 2302 | /* Get extended controls. Allocates the helpers array if needed. */ |
| 2303 | int v4l2_g_ext_ctrls(struct v4l2_ctrl_handler *hdl, struct v4l2_ext_controls *cs) |
| 2304 | { |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2305 | struct v4l2_ctrl_helper helper[4]; |
| 2306 | struct v4l2_ctrl_helper *helpers = helper; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2307 | int ret; |
Hans Verkuil | ddac5c1 | 2011-06-10 05:43:34 -0300 | [diff] [blame] | 2308 | int i, j; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2309 | |
| 2310 | cs->error_idx = cs->count; |
| 2311 | cs->ctrl_class = V4L2_CTRL_ID2CLASS(cs->ctrl_class); |
| 2312 | |
| 2313 | if (hdl == NULL) |
| 2314 | return -EINVAL; |
| 2315 | |
| 2316 | if (cs->count == 0) |
| 2317 | return class_check(hdl, cs->ctrl_class); |
| 2318 | |
| 2319 | if (cs->count > ARRAY_SIZE(helper)) { |
Xi Wang | 5f0049b | 2012-04-06 09:32:36 -0300 | [diff] [blame] | 2320 | helpers = kmalloc_array(cs->count, sizeof(helper[0]), |
| 2321 | GFP_KERNEL); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2322 | if (helpers == NULL) |
| 2323 | return -ENOMEM; |
| 2324 | } |
| 2325 | |
Hans Verkuil | 37cd3b7 | 2011-06-07 04:40:04 -0300 | [diff] [blame] | 2326 | ret = prepare_ext_ctrls(hdl, cs, helpers); |
| 2327 | cs->error_idx = cs->count; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2328 | |
| 2329 | for (i = 0; !ret && i < cs->count; i++) |
| 2330 | if (helpers[i].ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY) |
| 2331 | ret = -EACCES; |
| 2332 | |
| 2333 | for (i = 0; !ret && i < cs->count; i++) { |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2334 | int (*ctrl_to_user)(struct v4l2_ext_control *c, |
| 2335 | struct v4l2_ctrl *ctrl) = cur_to_user; |
| 2336 | struct v4l2_ctrl *master; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2337 | |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2338 | if (helpers[i].mref == NULL) |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2339 | continue; |
| 2340 | |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2341 | master = helpers[i].mref->ctrl; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2342 | cs->error_idx = i; |
| 2343 | |
| 2344 | v4l2_ctrl_lock(master); |
Hans Verkuil | ddac5c1 | 2011-06-10 05:43:34 -0300 | [diff] [blame] | 2345 | |
| 2346 | /* g_volatile_ctrl will update the new control values */ |
Hans Verkuil | 5626b8c | 2011-08-26 07:53:53 -0300 | [diff] [blame] | 2347 | if ((master->flags & V4L2_CTRL_FLAG_VOLATILE) || |
| 2348 | (master->has_volatiles && !is_cur_manual(master))) { |
Hans Verkuil | ddac5c1 | 2011-06-10 05:43:34 -0300 | [diff] [blame] | 2349 | for (j = 0; j < master->ncontrols; j++) |
| 2350 | cur_to_new(master->cluster[j]); |
Hans Verkuil | 54c911e | 2011-05-25 06:04:58 -0300 | [diff] [blame] | 2351 | ret = call_op(master, g_volatile_ctrl); |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2352 | ctrl_to_user = new_to_user; |
Hans Verkuil | ddac5c1 | 2011-06-10 05:43:34 -0300 | [diff] [blame] | 2353 | } |
| 2354 | /* If OK, then copy the current (for non-volatile controls) |
| 2355 | or the new (for volatile controls) control values to the |
| 2356 | caller */ |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2357 | if (!ret) { |
| 2358 | u32 idx = i; |
| 2359 | |
| 2360 | do { |
| 2361 | ret = ctrl_to_user(cs->controls + idx, |
| 2362 | helpers[idx].ctrl); |
| 2363 | idx = helpers[idx].next; |
| 2364 | } while (!ret && idx); |
| 2365 | } |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2366 | v4l2_ctrl_unlock(master); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2367 | } |
| 2368 | |
| 2369 | if (cs->count > ARRAY_SIZE(helper)) |
| 2370 | kfree(helpers); |
| 2371 | return ret; |
| 2372 | } |
| 2373 | EXPORT_SYMBOL(v4l2_g_ext_ctrls); |
| 2374 | |
| 2375 | int v4l2_subdev_g_ext_ctrls(struct v4l2_subdev *sd, struct v4l2_ext_controls *cs) |
| 2376 | { |
| 2377 | return v4l2_g_ext_ctrls(sd->ctrl_handler, cs); |
| 2378 | } |
| 2379 | EXPORT_SYMBOL(v4l2_subdev_g_ext_ctrls); |
| 2380 | |
| 2381 | /* Helper function to get a single control */ |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 2382 | static int get_ctrl(struct v4l2_ctrl *ctrl, struct v4l2_ext_control *c) |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2383 | { |
| 2384 | struct v4l2_ctrl *master = ctrl->cluster[0]; |
| 2385 | int ret = 0; |
Hans Verkuil | ddac5c1 | 2011-06-10 05:43:34 -0300 | [diff] [blame] | 2386 | int i; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2387 | |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 2388 | /* String controls are not supported. The new_to_user() and |
| 2389 | * cur_to_user() calls below would need to be modified not to access |
| 2390 | * userspace memory when called from get_ctrl(). |
| 2391 | */ |
| 2392 | if (ctrl->type == V4L2_CTRL_TYPE_STRING) |
| 2393 | return -EINVAL; |
| 2394 | |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2395 | if (ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY) |
| 2396 | return -EACCES; |
| 2397 | |
| 2398 | v4l2_ctrl_lock(master); |
| 2399 | /* g_volatile_ctrl will update the current control values */ |
Hans Verkuil | 5626b8c | 2011-08-26 07:53:53 -0300 | [diff] [blame] | 2400 | if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) { |
Hans Verkuil | ddac5c1 | 2011-06-10 05:43:34 -0300 | [diff] [blame] | 2401 | for (i = 0; i < master->ncontrols; i++) |
| 2402 | cur_to_new(master->cluster[i]); |
Hans Verkuil | 54c911e | 2011-05-25 06:04:58 -0300 | [diff] [blame] | 2403 | ret = call_op(master, g_volatile_ctrl); |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 2404 | new_to_user(c, ctrl); |
Hans Verkuil | ddac5c1 | 2011-06-10 05:43:34 -0300 | [diff] [blame] | 2405 | } else { |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 2406 | cur_to_user(c, ctrl); |
Hans Verkuil | ddac5c1 | 2011-06-10 05:43:34 -0300 | [diff] [blame] | 2407 | } |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2408 | v4l2_ctrl_unlock(master); |
| 2409 | return ret; |
| 2410 | } |
| 2411 | |
| 2412 | int v4l2_g_ctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_control *control) |
| 2413 | { |
| 2414 | struct v4l2_ctrl *ctrl = v4l2_ctrl_find(hdl, control->id); |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 2415 | struct v4l2_ext_control c; |
| 2416 | int ret; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2417 | |
| 2418 | if (ctrl == NULL || !type_is_int(ctrl)) |
| 2419 | return -EINVAL; |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 2420 | ret = get_ctrl(ctrl, &c); |
| 2421 | control->value = c.value; |
| 2422 | return ret; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2423 | } |
| 2424 | EXPORT_SYMBOL(v4l2_g_ctrl); |
| 2425 | |
| 2426 | int v4l2_subdev_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *control) |
| 2427 | { |
| 2428 | return v4l2_g_ctrl(sd->ctrl_handler, control); |
| 2429 | } |
| 2430 | EXPORT_SYMBOL(v4l2_subdev_g_ctrl); |
| 2431 | |
| 2432 | s32 v4l2_ctrl_g_ctrl(struct v4l2_ctrl *ctrl) |
| 2433 | { |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 2434 | struct v4l2_ext_control c; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2435 | |
| 2436 | /* It's a driver bug if this happens. */ |
| 2437 | WARN_ON(!type_is_int(ctrl)); |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 2438 | c.value = 0; |
| 2439 | get_ctrl(ctrl, &c); |
| 2440 | return c.value; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2441 | } |
| 2442 | EXPORT_SYMBOL(v4l2_ctrl_g_ctrl); |
| 2443 | |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 2444 | s64 v4l2_ctrl_g_ctrl_int64(struct v4l2_ctrl *ctrl) |
| 2445 | { |
| 2446 | struct v4l2_ext_control c; |
| 2447 | |
| 2448 | /* It's a driver bug if this happens. */ |
| 2449 | WARN_ON(ctrl->type != V4L2_CTRL_TYPE_INTEGER64); |
| 2450 | c.value = 0; |
| 2451 | get_ctrl(ctrl, &c); |
| 2452 | return c.value; |
| 2453 | } |
| 2454 | EXPORT_SYMBOL(v4l2_ctrl_g_ctrl_int64); |
| 2455 | |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2456 | |
| 2457 | /* Core function that calls try/s_ctrl and ensures that the new value is |
| 2458 | copied to the current value on a set. |
| 2459 | Must be called with ctrl->handler->lock held. */ |
Sylwester Nawrocki | 2ccbe77 | 2013-01-19 15:51:55 -0300 | [diff] [blame] | 2460 | static int try_or_set_cluster(struct v4l2_fh *fh, struct v4l2_ctrl *master, |
| 2461 | bool set, u32 ch_flags) |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2462 | { |
Hans Verkuil | 72d877c | 2011-06-10 05:44:36 -0300 | [diff] [blame] | 2463 | bool update_flag; |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2464 | int ret; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2465 | int i; |
| 2466 | |
| 2467 | /* Go through the cluster and either validate the new value or |
| 2468 | (if no new value was set), copy the current value to the new |
| 2469 | value, ensuring a consistent view for the control ops when |
| 2470 | called. */ |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2471 | for (i = 0; i < master->ncontrols; i++) { |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2472 | struct v4l2_ctrl *ctrl = master->cluster[i]; |
| 2473 | |
| 2474 | if (ctrl == NULL) |
| 2475 | continue; |
| 2476 | |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2477 | if (!ctrl->is_new) { |
| 2478 | cur_to_new(ctrl); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2479 | continue; |
| 2480 | } |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2481 | /* Check again: it may have changed since the |
| 2482 | previous check in try_or_set_ext_ctrls(). */ |
| 2483 | if (set && (ctrl->flags & V4L2_CTRL_FLAG_GRABBED)) |
| 2484 | return -EBUSY; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2485 | } |
| 2486 | |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2487 | ret = call_op(master, try_ctrl); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2488 | |
| 2489 | /* Don't set if there is no change */ |
Hans Verkuil | 72d877c | 2011-06-10 05:44:36 -0300 | [diff] [blame] | 2490 | if (ret || !set || !cluster_changed(master)) |
| 2491 | return ret; |
| 2492 | ret = call_op(master, s_ctrl); |
Hans Verkuil | 72d877c | 2011-06-10 05:44:36 -0300 | [diff] [blame] | 2493 | if (ret) |
| 2494 | return ret; |
| 2495 | |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2496 | /* If OK, then make the new values permanent. */ |
Hans Verkuil | 72d877c | 2011-06-10 05:44:36 -0300 | [diff] [blame] | 2497 | update_flag = is_cur_manual(master) != is_new_manual(master); |
| 2498 | for (i = 0; i < master->ncontrols; i++) |
Sylwester Nawrocki | 2ccbe77 | 2013-01-19 15:51:55 -0300 | [diff] [blame] | 2499 | new_to_cur(fh, master->cluster[i], ch_flags | |
| 2500 | ((update_flag && i > 0) ? V4L2_EVENT_CTRL_CH_FLAGS : 0)); |
Hans Verkuil | 72d877c | 2011-06-10 05:44:36 -0300 | [diff] [blame] | 2501 | return 0; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2502 | } |
| 2503 | |
Hans Verkuil | e640258 | 2011-06-14 10:56:42 -0300 | [diff] [blame] | 2504 | /* Validate controls. */ |
| 2505 | static int validate_ctrls(struct v4l2_ext_controls *cs, |
| 2506 | struct v4l2_ctrl_helper *helpers, bool set) |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2507 | { |
Hans Verkuil | e640258 | 2011-06-14 10:56:42 -0300 | [diff] [blame] | 2508 | unsigned i; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2509 | int ret = 0; |
| 2510 | |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2511 | cs->error_idx = cs->count; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2512 | for (i = 0; i < cs->count; i++) { |
| 2513 | struct v4l2_ctrl *ctrl = helpers[i].ctrl; |
| 2514 | |
Hans Verkuil | e640258 | 2011-06-14 10:56:42 -0300 | [diff] [blame] | 2515 | cs->error_idx = i; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2516 | |
| 2517 | if (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY) |
| 2518 | return -EACCES; |
| 2519 | /* This test is also done in try_set_control_cluster() which |
| 2520 | is called in atomic context, so that has the final say, |
| 2521 | but it makes sense to do an up-front check as well. Once |
| 2522 | an error occurs in try_set_control_cluster() some other |
| 2523 | controls may have been set already and we want to do a |
| 2524 | best-effort to avoid that. */ |
| 2525 | if (set && (ctrl->flags & V4L2_CTRL_FLAG_GRABBED)) |
| 2526 | return -EBUSY; |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2527 | ret = validate_new(ctrl, &cs->controls[i]); |
| 2528 | if (ret) |
| 2529 | return ret; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2530 | } |
Hans Verkuil | e640258 | 2011-06-14 10:56:42 -0300 | [diff] [blame] | 2531 | return 0; |
| 2532 | } |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2533 | |
Hans Verkuil | 5626b8c | 2011-08-26 07:53:53 -0300 | [diff] [blame] | 2534 | /* Obtain the current volatile values of an autocluster and mark them |
| 2535 | as new. */ |
| 2536 | static void update_from_auto_cluster(struct v4l2_ctrl *master) |
| 2537 | { |
| 2538 | int i; |
| 2539 | |
| 2540 | for (i = 0; i < master->ncontrols; i++) |
| 2541 | cur_to_new(master->cluster[i]); |
| 2542 | if (!call_op(master, g_volatile_ctrl)) |
| 2543 | for (i = 1; i < master->ncontrols; i++) |
| 2544 | if (master->cluster[i]) |
| 2545 | master->cluster[i]->is_new = 1; |
| 2546 | } |
| 2547 | |
Hans Verkuil | e640258 | 2011-06-14 10:56:42 -0300 | [diff] [blame] | 2548 | /* Try or try-and-set controls */ |
| 2549 | static int try_set_ext_ctrls(struct v4l2_fh *fh, struct v4l2_ctrl_handler *hdl, |
| 2550 | struct v4l2_ext_controls *cs, |
| 2551 | bool set) |
| 2552 | { |
| 2553 | struct v4l2_ctrl_helper helper[4]; |
| 2554 | struct v4l2_ctrl_helper *helpers = helper; |
| 2555 | unsigned i, j; |
| 2556 | int ret; |
| 2557 | |
| 2558 | cs->error_idx = cs->count; |
| 2559 | cs->ctrl_class = V4L2_CTRL_ID2CLASS(cs->ctrl_class); |
| 2560 | |
| 2561 | if (hdl == NULL) |
| 2562 | return -EINVAL; |
| 2563 | |
| 2564 | if (cs->count == 0) |
| 2565 | return class_check(hdl, cs->ctrl_class); |
| 2566 | |
| 2567 | if (cs->count > ARRAY_SIZE(helper)) { |
Xi Wang | 0a3475e | 2012-04-06 09:32:37 -0300 | [diff] [blame] | 2568 | helpers = kmalloc_array(cs->count, sizeof(helper[0]), |
| 2569 | GFP_KERNEL); |
Hans Verkuil | e640258 | 2011-06-14 10:56:42 -0300 | [diff] [blame] | 2570 | if (!helpers) |
| 2571 | return -ENOMEM; |
| 2572 | } |
| 2573 | ret = prepare_ext_ctrls(hdl, cs, helpers); |
| 2574 | if (!ret) |
| 2575 | ret = validate_ctrls(cs, helpers, set); |
| 2576 | if (ret && set) |
| 2577 | cs->error_idx = cs->count; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2578 | for (i = 0; !ret && i < cs->count; i++) { |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2579 | struct v4l2_ctrl *master; |
| 2580 | u32 idx = i; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2581 | |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2582 | if (helpers[i].mref == NULL) |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2583 | continue; |
| 2584 | |
Hans Verkuil | 37cd3b7 | 2011-06-07 04:40:04 -0300 | [diff] [blame] | 2585 | cs->error_idx = i; |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2586 | master = helpers[i].mref->ctrl; |
| 2587 | v4l2_ctrl_lock(master); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2588 | |
Hans Verkuil | 2a86379 | 2011-01-11 14:45:03 -0300 | [diff] [blame] | 2589 | /* Reset the 'is_new' flags of the cluster */ |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2590 | for (j = 0; j < master->ncontrols; j++) |
| 2591 | if (master->cluster[j]) |
Hans Verkuil | 2a86379 | 2011-01-11 14:45:03 -0300 | [diff] [blame] | 2592 | master->cluster[j]->is_new = 0; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2593 | |
Hans Verkuil | 5626b8c | 2011-08-26 07:53:53 -0300 | [diff] [blame] | 2594 | /* For volatile autoclusters that are currently in auto mode |
| 2595 | we need to discover if it will be set to manual mode. |
| 2596 | If so, then we have to copy the current volatile values |
| 2597 | first since those will become the new manual values (which |
| 2598 | may be overwritten by explicit new values from this set |
| 2599 | of controls). */ |
| 2600 | if (master->is_auto && master->has_volatiles && |
| 2601 | !is_cur_manual(master)) { |
| 2602 | /* Pick an initial non-manual value */ |
| 2603 | s32 new_auto_val = master->manual_mode_value + 1; |
| 2604 | u32 tmp_idx = idx; |
| 2605 | |
| 2606 | do { |
| 2607 | /* Check if the auto control is part of the |
| 2608 | list, and remember the new value. */ |
| 2609 | if (helpers[tmp_idx].ctrl == master) |
| 2610 | new_auto_val = cs->controls[tmp_idx].value; |
| 2611 | tmp_idx = helpers[tmp_idx].next; |
| 2612 | } while (tmp_idx); |
| 2613 | /* If the new value == the manual value, then copy |
| 2614 | the current volatile values. */ |
| 2615 | if (new_auto_val == master->manual_mode_value) |
| 2616 | update_from_auto_cluster(master); |
| 2617 | } |
| 2618 | |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2619 | /* Copy the new caller-supplied control values. |
Hans Verkuil | 2a86379 | 2011-01-11 14:45:03 -0300 | [diff] [blame] | 2620 | user_to_new() sets 'is_new' to 1. */ |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2621 | do { |
| 2622 | ret = user_to_new(cs->controls + idx, helpers[idx].ctrl); |
| 2623 | idx = helpers[idx].next; |
| 2624 | } while (!ret && idx); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2625 | |
| 2626 | if (!ret) |
Sylwester Nawrocki | 2ccbe77 | 2013-01-19 15:51:55 -0300 | [diff] [blame] | 2627 | ret = try_or_set_cluster(fh, master, set, 0); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2628 | |
| 2629 | /* Copy the new values back to userspace. */ |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2630 | if (!ret) { |
| 2631 | idx = i; |
| 2632 | do { |
Hans Verkuil | adf41b9 | 2011-07-05 06:56:37 -0300 | [diff] [blame] | 2633 | ret = new_to_user(cs->controls + idx, |
Hans Verkuil | e640258 | 2011-06-14 10:56:42 -0300 | [diff] [blame] | 2634 | helpers[idx].ctrl); |
Hans Verkuil | eb5b16e | 2011-06-14 10:04:06 -0300 | [diff] [blame] | 2635 | idx = helpers[idx].next; |
| 2636 | } while (!ret && idx); |
| 2637 | } |
| 2638 | v4l2_ctrl_unlock(master); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2639 | } |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2640 | |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2641 | if (cs->count > ARRAY_SIZE(helper)) |
| 2642 | kfree(helpers); |
| 2643 | return ret; |
| 2644 | } |
| 2645 | |
| 2646 | int v4l2_try_ext_ctrls(struct v4l2_ctrl_handler *hdl, struct v4l2_ext_controls *cs) |
| 2647 | { |
Hans Verkuil | ab892ba | 2011-06-07 06:47:18 -0300 | [diff] [blame] | 2648 | return try_set_ext_ctrls(NULL, hdl, cs, false); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2649 | } |
| 2650 | EXPORT_SYMBOL(v4l2_try_ext_ctrls); |
| 2651 | |
Hans Verkuil | ab892ba | 2011-06-07 06:47:18 -0300 | [diff] [blame] | 2652 | int v4l2_s_ext_ctrls(struct v4l2_fh *fh, struct v4l2_ctrl_handler *hdl, |
| 2653 | struct v4l2_ext_controls *cs) |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2654 | { |
Hans Verkuil | ab892ba | 2011-06-07 06:47:18 -0300 | [diff] [blame] | 2655 | return try_set_ext_ctrls(fh, hdl, cs, true); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2656 | } |
| 2657 | EXPORT_SYMBOL(v4l2_s_ext_ctrls); |
| 2658 | |
| 2659 | int v4l2_subdev_try_ext_ctrls(struct v4l2_subdev *sd, struct v4l2_ext_controls *cs) |
| 2660 | { |
Hans Verkuil | ab892ba | 2011-06-07 06:47:18 -0300 | [diff] [blame] | 2661 | return try_set_ext_ctrls(NULL, sd->ctrl_handler, cs, false); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2662 | } |
| 2663 | EXPORT_SYMBOL(v4l2_subdev_try_ext_ctrls); |
| 2664 | |
| 2665 | int v4l2_subdev_s_ext_ctrls(struct v4l2_subdev *sd, struct v4l2_ext_controls *cs) |
| 2666 | { |
Hans Verkuil | ab892ba | 2011-06-07 06:47:18 -0300 | [diff] [blame] | 2667 | return try_set_ext_ctrls(NULL, sd->ctrl_handler, cs, true); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2668 | } |
| 2669 | EXPORT_SYMBOL(v4l2_subdev_s_ext_ctrls); |
| 2670 | |
| 2671 | /* Helper function for VIDIOC_S_CTRL compatibility */ |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 2672 | static int set_ctrl(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, |
Sylwester Nawrocki | 2ccbe77 | 2013-01-19 15:51:55 -0300 | [diff] [blame] | 2673 | struct v4l2_ext_control *c, u32 ch_flags) |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2674 | { |
| 2675 | struct v4l2_ctrl *master = ctrl->cluster[0]; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2676 | int i; |
| 2677 | |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 2678 | /* String controls are not supported. The user_to_new() and |
| 2679 | * cur_to_user() calls below would need to be modified not to access |
| 2680 | * userspace memory when called from set_ctrl(). |
| 2681 | */ |
| 2682 | if (ctrl->type == V4L2_CTRL_TYPE_STRING) |
| 2683 | return -EINVAL; |
| 2684 | |
Hans Verkuil | 2a86379 | 2011-01-11 14:45:03 -0300 | [diff] [blame] | 2685 | /* Reset the 'is_new' flags of the cluster */ |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2686 | for (i = 0; i < master->ncontrols; i++) |
| 2687 | if (master->cluster[i]) |
Hans Verkuil | 2a86379 | 2011-01-11 14:45:03 -0300 | [diff] [blame] | 2688 | master->cluster[i]->is_new = 0; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2689 | |
Hans Verkuil | 5626b8c | 2011-08-26 07:53:53 -0300 | [diff] [blame] | 2690 | /* For autoclusters with volatiles that are switched from auto to |
| 2691 | manual mode we have to update the current volatile values since |
| 2692 | those will become the initial manual values after such a switch. */ |
| 2693 | if (master->is_auto && master->has_volatiles && ctrl == master && |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 2694 | !is_cur_manual(master) && c->value == master->manual_mode_value) |
Hans Verkuil | 5626b8c | 2011-08-26 07:53:53 -0300 | [diff] [blame] | 2695 | update_from_auto_cluster(master); |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 2696 | |
| 2697 | user_to_new(c, ctrl); |
Sylwester Nawrocki | 2ccbe77 | 2013-01-19 15:51:55 -0300 | [diff] [blame] | 2698 | return try_or_set_cluster(fh, master, true, ch_flags); |
| 2699 | } |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 2700 | |
Sylwester Nawrocki | 2ccbe77 | 2013-01-19 15:51:55 -0300 | [diff] [blame] | 2701 | /* Helper function for VIDIOC_S_CTRL compatibility */ |
| 2702 | static int set_ctrl_lock(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, |
| 2703 | struct v4l2_ext_control *c) |
| 2704 | { |
| 2705 | int ret = validate_new(ctrl, c); |
| 2706 | |
| 2707 | if (!ret) { |
| 2708 | v4l2_ctrl_lock(ctrl); |
| 2709 | ret = set_ctrl(fh, ctrl, c, 0); |
| 2710 | if (!ret) |
| 2711 | cur_to_user(c, ctrl); |
| 2712 | v4l2_ctrl_unlock(ctrl); |
| 2713 | } |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2714 | return ret; |
| 2715 | } |
| 2716 | |
Hans Verkuil | ab892ba | 2011-06-07 06:47:18 -0300 | [diff] [blame] | 2717 | int v4l2_s_ctrl(struct v4l2_fh *fh, struct v4l2_ctrl_handler *hdl, |
| 2718 | struct v4l2_control *control) |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2719 | { |
| 2720 | struct v4l2_ctrl *ctrl = v4l2_ctrl_find(hdl, control->id); |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 2721 | struct v4l2_ext_control c; |
| 2722 | int ret; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2723 | |
| 2724 | if (ctrl == NULL || !type_is_int(ctrl)) |
| 2725 | return -EINVAL; |
| 2726 | |
Hans Verkuil | 7ebbc39 | 2011-06-07 04:50:31 -0300 | [diff] [blame] | 2727 | if (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY) |
| 2728 | return -EACCES; |
| 2729 | |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 2730 | c.value = control->value; |
Sylwester Nawrocki | 2ccbe77 | 2013-01-19 15:51:55 -0300 | [diff] [blame] | 2731 | ret = set_ctrl_lock(fh, ctrl, &c); |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 2732 | control->value = c.value; |
| 2733 | return ret; |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2734 | } |
| 2735 | EXPORT_SYMBOL(v4l2_s_ctrl); |
| 2736 | |
| 2737 | int v4l2_subdev_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *control) |
| 2738 | { |
Hans Verkuil | ab892ba | 2011-06-07 06:47:18 -0300 | [diff] [blame] | 2739 | return v4l2_s_ctrl(NULL, sd->ctrl_handler, control); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2740 | } |
| 2741 | EXPORT_SYMBOL(v4l2_subdev_s_ctrl); |
| 2742 | |
| 2743 | int v4l2_ctrl_s_ctrl(struct v4l2_ctrl *ctrl, s32 val) |
| 2744 | { |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 2745 | struct v4l2_ext_control c; |
| 2746 | |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2747 | /* It's a driver bug if this happens. */ |
| 2748 | WARN_ON(!type_is_int(ctrl)); |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 2749 | c.value = val; |
Sylwester Nawrocki | 2ccbe77 | 2013-01-19 15:51:55 -0300 | [diff] [blame] | 2750 | return set_ctrl_lock(NULL, ctrl, &c); |
Hans Verkuil | 0996517 | 2010-08-01 14:32:42 -0300 | [diff] [blame] | 2751 | } |
| 2752 | EXPORT_SYMBOL(v4l2_ctrl_s_ctrl); |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 2753 | |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 2754 | int v4l2_ctrl_s_ctrl_int64(struct v4l2_ctrl *ctrl, s64 val) |
| 2755 | { |
| 2756 | struct v4l2_ext_control c; |
| 2757 | |
| 2758 | /* It's a driver bug if this happens. */ |
| 2759 | WARN_ON(ctrl->type != V4L2_CTRL_TYPE_INTEGER64); |
| 2760 | c.value64 = val; |
Sylwester Nawrocki | 2ccbe77 | 2013-01-19 15:51:55 -0300 | [diff] [blame] | 2761 | return set_ctrl_lock(NULL, ctrl, &c); |
Laurent Pinchart | 03d5285 | 2012-07-23 09:15:21 -0300 | [diff] [blame] | 2762 | } |
| 2763 | EXPORT_SYMBOL(v4l2_ctrl_s_ctrl_int64); |
| 2764 | |
Hans Verkuil | 8ac7a94 | 2012-09-07 04:46:39 -0300 | [diff] [blame] | 2765 | void v4l2_ctrl_notify(struct v4l2_ctrl *ctrl, v4l2_ctrl_notify_fnc notify, void *priv) |
| 2766 | { |
| 2767 | if (ctrl == NULL) |
| 2768 | return; |
| 2769 | if (notify == NULL) { |
| 2770 | ctrl->call_notify = 0; |
| 2771 | return; |
| 2772 | } |
| 2773 | if (WARN_ON(ctrl->handler->notify && ctrl->handler->notify != notify)) |
| 2774 | return; |
| 2775 | ctrl->handler->notify = notify; |
| 2776 | ctrl->handler->notify_priv = priv; |
| 2777 | ctrl->call_notify = 1; |
| 2778 | } |
| 2779 | EXPORT_SYMBOL(v4l2_ctrl_notify); |
| 2780 | |
Sylwester Nawrocki | 2ccbe77 | 2013-01-19 15:51:55 -0300 | [diff] [blame] | 2781 | int v4l2_ctrl_modify_range(struct v4l2_ctrl *ctrl, |
| 2782 | s32 min, s32 max, u32 step, s32 def) |
| 2783 | { |
| 2784 | int ret = check_range(ctrl->type, min, max, step, def); |
| 2785 | struct v4l2_ext_control c; |
| 2786 | |
| 2787 | switch (ctrl->type) { |
| 2788 | case V4L2_CTRL_TYPE_INTEGER: |
| 2789 | case V4L2_CTRL_TYPE_BOOLEAN: |
| 2790 | case V4L2_CTRL_TYPE_MENU: |
| 2791 | case V4L2_CTRL_TYPE_INTEGER_MENU: |
| 2792 | case V4L2_CTRL_TYPE_BITMASK: |
| 2793 | if (ret) |
| 2794 | return ret; |
| 2795 | break; |
| 2796 | default: |
| 2797 | return -EINVAL; |
| 2798 | } |
| 2799 | v4l2_ctrl_lock(ctrl); |
| 2800 | ctrl->minimum = min; |
| 2801 | ctrl->maximum = max; |
| 2802 | ctrl->step = step; |
| 2803 | ctrl->default_value = def; |
| 2804 | c.value = ctrl->cur.val; |
| 2805 | if (validate_new(ctrl, &c)) |
| 2806 | c.value = def; |
| 2807 | if (c.value != ctrl->cur.val) |
| 2808 | ret = set_ctrl(NULL, ctrl, &c, V4L2_EVENT_CTRL_CH_RANGE); |
| 2809 | else |
| 2810 | send_event(NULL, ctrl, V4L2_EVENT_CTRL_CH_RANGE); |
| 2811 | v4l2_ctrl_unlock(ctrl); |
| 2812 | return ret; |
| 2813 | } |
| 2814 | EXPORT_SYMBOL(v4l2_ctrl_modify_range); |
| 2815 | |
Hans Verkuil | 6e6d76c | 2012-05-07 16:53:20 -0300 | [diff] [blame] | 2816 | static int v4l2_ctrl_add_event(struct v4l2_subscribed_event *sev, unsigned elems) |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 2817 | { |
Hans de Goede | 3e366149 | 2012-04-08 12:59:47 -0300 | [diff] [blame] | 2818 | struct v4l2_ctrl *ctrl = v4l2_ctrl_find(sev->fh->ctrl_handler, sev->id); |
| 2819 | |
| 2820 | if (ctrl == NULL) |
| 2821 | return -EINVAL; |
| 2822 | |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 2823 | v4l2_ctrl_lock(ctrl); |
Hans Verkuil | 77068d3 | 2011-06-13 18:55:58 -0300 | [diff] [blame] | 2824 | list_add_tail(&sev->node, &ctrl->ev_subs); |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 2825 | if (ctrl->type != V4L2_CTRL_TYPE_CTRL_CLASS && |
Hans Verkuil | 77068d3 | 2011-06-13 18:55:58 -0300 | [diff] [blame] | 2826 | (sev->flags & V4L2_EVENT_SUB_FL_SEND_INITIAL)) { |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 2827 | struct v4l2_event ev; |
Hans Verkuil | c12fcfd | 2011-06-14 02:42:45 -0300 | [diff] [blame] | 2828 | u32 changes = V4L2_EVENT_CTRL_CH_FLAGS; |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 2829 | |
Hans Verkuil | c12fcfd | 2011-06-14 02:42:45 -0300 | [diff] [blame] | 2830 | if (!(ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY)) |
| 2831 | changes |= V4L2_EVENT_CTRL_CH_VALUE; |
| 2832 | fill_event(&ev, ctrl, changes); |
Hans Verkuil | 6e6d76c | 2012-05-07 16:53:20 -0300 | [diff] [blame] | 2833 | /* Mark the queue as active, allowing this initial |
| 2834 | event to be accepted. */ |
| 2835 | sev->elems = elems; |
Hans Verkuil | 77068d3 | 2011-06-13 18:55:58 -0300 | [diff] [blame] | 2836 | v4l2_event_queue_fh(sev->fh, &ev); |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 2837 | } |
| 2838 | v4l2_ctrl_unlock(ctrl); |
Hans de Goede | 3e366149 | 2012-04-08 12:59:47 -0300 | [diff] [blame] | 2839 | return 0; |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 2840 | } |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 2841 | |
Hans de Goede | 3e366149 | 2012-04-08 12:59:47 -0300 | [diff] [blame] | 2842 | static void v4l2_ctrl_del_event(struct v4l2_subscribed_event *sev) |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 2843 | { |
Hans de Goede | 3e366149 | 2012-04-08 12:59:47 -0300 | [diff] [blame] | 2844 | struct v4l2_ctrl *ctrl = v4l2_ctrl_find(sev->fh->ctrl_handler, sev->id); |
| 2845 | |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 2846 | v4l2_ctrl_lock(ctrl); |
Hans Verkuil | 77068d3 | 2011-06-13 18:55:58 -0300 | [diff] [blame] | 2847 | list_del(&sev->node); |
Hans Verkuil | 6e23939 | 2011-06-07 11:13:44 -0300 | [diff] [blame] | 2848 | v4l2_ctrl_unlock(ctrl); |
| 2849 | } |
Hans de Goede | 3e366149 | 2012-04-08 12:59:47 -0300 | [diff] [blame] | 2850 | |
| 2851 | void v4l2_ctrl_replace(struct v4l2_event *old, const struct v4l2_event *new) |
| 2852 | { |
| 2853 | u32 old_changes = old->u.ctrl.changes; |
| 2854 | |
| 2855 | old->u.ctrl = new->u.ctrl; |
| 2856 | old->u.ctrl.changes |= old_changes; |
| 2857 | } |
| 2858 | EXPORT_SYMBOL(v4l2_ctrl_replace); |
| 2859 | |
| 2860 | void v4l2_ctrl_merge(const struct v4l2_event *old, struct v4l2_event *new) |
| 2861 | { |
| 2862 | new->u.ctrl.changes |= old->u.ctrl.changes; |
| 2863 | } |
| 2864 | EXPORT_SYMBOL(v4l2_ctrl_merge); |
| 2865 | |
| 2866 | const struct v4l2_subscribed_event_ops v4l2_ctrl_sub_ev_ops = { |
| 2867 | .add = v4l2_ctrl_add_event, |
| 2868 | .del = v4l2_ctrl_del_event, |
| 2869 | .replace = v4l2_ctrl_replace, |
| 2870 | .merge = v4l2_ctrl_merge, |
| 2871 | }; |
| 2872 | EXPORT_SYMBOL(v4l2_ctrl_sub_ev_ops); |
Hans Verkuil | e2ecb25 | 2012-02-02 08:20:53 -0300 | [diff] [blame] | 2873 | |
| 2874 | int v4l2_ctrl_log_status(struct file *file, void *fh) |
| 2875 | { |
| 2876 | struct video_device *vfd = video_devdata(file); |
| 2877 | struct v4l2_fh *vfh = file->private_data; |
| 2878 | |
| 2879 | if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) && vfd->v4l2_dev) |
| 2880 | v4l2_ctrl_handler_log_status(vfh->ctrl_handler, |
| 2881 | vfd->v4l2_dev->name); |
| 2882 | return 0; |
| 2883 | } |
| 2884 | EXPORT_SYMBOL(v4l2_ctrl_log_status); |
Hans Verkuil | a26243b | 2012-01-27 16:18:42 -0300 | [diff] [blame] | 2885 | |
| 2886 | int v4l2_ctrl_subscribe_event(struct v4l2_fh *fh, |
Hans Verkuil | 85f5fe3 | 2012-09-04 11:46:09 -0300 | [diff] [blame] | 2887 | const struct v4l2_event_subscription *sub) |
Hans Verkuil | a26243b | 2012-01-27 16:18:42 -0300 | [diff] [blame] | 2888 | { |
| 2889 | if (sub->type == V4L2_EVENT_CTRL) |
Hans de Goede | 3e366149 | 2012-04-08 12:59:47 -0300 | [diff] [blame] | 2890 | return v4l2_event_subscribe(fh, sub, 0, &v4l2_ctrl_sub_ev_ops); |
Hans Verkuil | a26243b | 2012-01-27 16:18:42 -0300 | [diff] [blame] | 2891 | return -EINVAL; |
| 2892 | } |
| 2893 | EXPORT_SYMBOL(v4l2_ctrl_subscribe_event); |
| 2894 | |
Sylwester Nawrocki | 22fa427 | 2013-01-22 19:00:23 -0300 | [diff] [blame] | 2895 | int v4l2_ctrl_subdev_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh, |
| 2896 | struct v4l2_event_subscription *sub) |
| 2897 | { |
| 2898 | if (!sd->ctrl_handler) |
| 2899 | return -EINVAL; |
| 2900 | return v4l2_ctrl_subscribe_event(fh, sub); |
| 2901 | } |
| 2902 | EXPORT_SYMBOL(v4l2_ctrl_subdev_subscribe_event); |
| 2903 | |
Hans Verkuil | a26243b | 2012-01-27 16:18:42 -0300 | [diff] [blame] | 2904 | unsigned int v4l2_ctrl_poll(struct file *file, struct poll_table_struct *wait) |
| 2905 | { |
| 2906 | struct v4l2_fh *fh = file->private_data; |
| 2907 | |
| 2908 | if (v4l2_event_pending(fh)) |
| 2909 | return POLLPRI; |
| 2910 | poll_wait(file, &fh->wait, wait); |
| 2911 | return 0; |
| 2912 | } |
| 2913 | EXPORT_SYMBOL(v4l2_ctrl_poll); |