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pwc-v4l.c
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linux-6.19.14/drivers/media/usb/pwc/pwc-v4l.c
1// SPDX-License-Identifier: GPL-2.0-or-later 2/* Linux driver for Philips webcam 3 USB and Video4Linux interface part. 4 (C) 1999-2004 Nemosoft Unv. 5 (C) 2004-2006 Luc Saillard (luc@saillard.org) 6 (C) 2011 Hans de Goede <hdegoede@redhat.com> 7 8 NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx 9 driver and thus may have bugs that are not present in the original version. 10 Please send bug reports and support requests to <luc@saillard.org>. 11 The decompression routines have been implemented by reverse-engineering the 12 Nemosoft binary pwcx module. Caveat emptor. 13 14 15*/ 16 17#include <linux/errno.h> 18#include <linux/init.h> 19#include <linux/mm.h> 20#include <linux/module.h> 21#include <linux/poll.h> 22#include <linux/vmalloc.h> 23#include <linux/jiffies.h> 24#include <asm/io.h> 25 26#include "pwc.h" 27 28#define PWC_CID_CUSTOM(ctrl) ((V4L2_CID_USER_BASE | 0xf000) + custom_ ## ctrl) 29 30static int pwc_g_volatile_ctrl(struct v4l2_ctrl *ctrl); 31static int pwc_s_ctrl(struct v4l2_ctrl *ctrl); 32 33static const struct v4l2_ctrl_ops pwc_ctrl_ops = { 34 .g_volatile_ctrl = pwc_g_volatile_ctrl, 35 .s_ctrl = pwc_s_ctrl, 36}; 37 38enum { awb_indoor, awb_outdoor, awb_fl, awb_manual, awb_auto }; 39enum { custom_autocontour, custom_contour, custom_noise_reduction, 40 custom_awb_speed, custom_awb_delay, 41 custom_save_user, custom_restore_user, custom_restore_factory }; 42 43static const char * const pwc_auto_whitebal_qmenu[] = { 44 "Indoor (Incandescant Lighting) Mode", 45 "Outdoor (Sunlight) Mode", 46 "Indoor (Fluorescent Lighting) Mode", 47 "Manual Mode", 48 "Auto Mode", 49 NULL 50}; 51 52static const struct v4l2_ctrl_config pwc_auto_white_balance_cfg = { 53 .ops = &pwc_ctrl_ops, 54 .id = V4L2_CID_AUTO_WHITE_BALANCE, 55 .type = V4L2_CTRL_TYPE_MENU, 56 .max = awb_auto, 57 .qmenu = pwc_auto_whitebal_qmenu, 58}; 59 60static const struct v4l2_ctrl_config pwc_autocontour_cfg = { 61 .ops = &pwc_ctrl_ops, 62 .id = PWC_CID_CUSTOM(autocontour), 63 .type = V4L2_CTRL_TYPE_BOOLEAN, 64 .name = "Auto contour", 65 .min = 0, 66 .max = 1, 67 .step = 1, 68}; 69 70static const struct v4l2_ctrl_config pwc_contour_cfg = { 71 .ops = &pwc_ctrl_ops, 72 .id = PWC_CID_CUSTOM(contour), 73 .type = V4L2_CTRL_TYPE_INTEGER, 74 .name = "Contour", 75 .flags = V4L2_CTRL_FLAG_SLIDER, 76 .min = 0, 77 .max = 63, 78 .step = 1, 79}; 80 81static const struct v4l2_ctrl_config pwc_backlight_cfg = { 82 .ops = &pwc_ctrl_ops, 83 .id = V4L2_CID_BACKLIGHT_COMPENSATION, 84 .type = V4L2_CTRL_TYPE_BOOLEAN, 85 .min = 0, 86 .max = 1, 87 .step = 1, 88}; 89 90static const struct v4l2_ctrl_config pwc_flicker_cfg = { 91 .ops = &pwc_ctrl_ops, 92 .id = V4L2_CID_BAND_STOP_FILTER, 93 .type = V4L2_CTRL_TYPE_BOOLEAN, 94 .min = 0, 95 .max = 1, 96 .step = 1, 97}; 98 99static const struct v4l2_ctrl_config pwc_noise_reduction_cfg = { 100 .ops = &pwc_ctrl_ops, 101 .id = PWC_CID_CUSTOM(noise_reduction), 102 .type = V4L2_CTRL_TYPE_INTEGER, 103 .name = "Dynamic Noise Reduction", 104 .min = 0, 105 .max = 3, 106 .step = 1, 107}; 108 109static const struct v4l2_ctrl_config pwc_save_user_cfg = { 110 .ops = &pwc_ctrl_ops, 111 .id = PWC_CID_CUSTOM(save_user), 112 .type = V4L2_CTRL_TYPE_BUTTON, 113 .name = "Save User Settings", 114}; 115 116static const struct v4l2_ctrl_config pwc_restore_user_cfg = { 117 .ops = &pwc_ctrl_ops, 118 .id = PWC_CID_CUSTOM(restore_user), 119 .type = V4L2_CTRL_TYPE_BUTTON, 120 .name = "Restore User Settings", 121}; 122 123static const struct v4l2_ctrl_config pwc_restore_factory_cfg = { 124 .ops = &pwc_ctrl_ops, 125 .id = PWC_CID_CUSTOM(restore_factory), 126 .type = V4L2_CTRL_TYPE_BUTTON, 127 .name = "Restore Factory Settings", 128}; 129 130static const struct v4l2_ctrl_config pwc_awb_speed_cfg = { 131 .ops = &pwc_ctrl_ops, 132 .id = PWC_CID_CUSTOM(awb_speed), 133 .type = V4L2_CTRL_TYPE_INTEGER, 134 .name = "Auto White Balance Speed", 135 .min = 1, 136 .max = 32, 137 .step = 1, 138}; 139 140static const struct v4l2_ctrl_config pwc_awb_delay_cfg = { 141 .ops = &pwc_ctrl_ops, 142 .id = PWC_CID_CUSTOM(awb_delay), 143 .type = V4L2_CTRL_TYPE_INTEGER, 144 .name = "Auto White Balance Delay", 145 .min = 0, 146 .max = 63, 147 .step = 1, 148}; 149 150int pwc_init_controls(struct pwc_device *pdev) 151{ 152 struct v4l2_ctrl_handler *hdl; 153 struct v4l2_ctrl_config cfg; 154 int r, def; 155 156 hdl = &pdev->ctrl_handler; 157 r = v4l2_ctrl_handler_init(hdl, 20); 158 if (r) 159 return r; 160 161 /* Brightness, contrast, saturation, gamma */ 162 r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, BRIGHTNESS_FORMATTER, &def); 163 if (r || def > 127) 164 def = 63; 165 pdev->brightness = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops, 166 V4L2_CID_BRIGHTNESS, 0, 127, 1, def); 167 168 r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, CONTRAST_FORMATTER, &def); 169 if (r || def > 63) 170 def = 31; 171 pdev->contrast = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops, 172 V4L2_CID_CONTRAST, 0, 63, 1, def); 173 174 if (pdev->type >= 675) { 175 if (pdev->type < 730) 176 pdev->saturation_fmt = SATURATION_MODE_FORMATTER2; 177 else 178 pdev->saturation_fmt = SATURATION_MODE_FORMATTER1; 179 r = pwc_get_s8_ctrl(pdev, GET_CHROM_CTL, pdev->saturation_fmt, 180 &def); 181 if (r || def < -100 || def > 100) 182 def = 0; 183 pdev->saturation = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops, 184 V4L2_CID_SATURATION, -100, 100, 1, def); 185 } 186 187 r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, GAMMA_FORMATTER, &def); 188 if (r || def > 31) 189 def = 15; 190 pdev->gamma = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops, 191 V4L2_CID_GAMMA, 0, 31, 1, def); 192 193 /* auto white balance, red gain, blue gain */ 194 r = pwc_get_u8_ctrl(pdev, GET_CHROM_CTL, WB_MODE_FORMATTER, &def); 195 if (r || def > awb_auto) 196 def = awb_auto; 197 cfg = pwc_auto_white_balance_cfg; 198 cfg.name = v4l2_ctrl_get_name(cfg.id); 199 cfg.def = def; 200 pdev->auto_white_balance = v4l2_ctrl_new_custom(hdl, &cfg, NULL); 201 /* check auto controls to avoid NULL deref in v4l2_ctrl_auto_cluster */ 202 if (!pdev->auto_white_balance) 203 return hdl->error; 204 205 r = pwc_get_u8_ctrl(pdev, GET_CHROM_CTL, 206 PRESET_MANUAL_RED_GAIN_FORMATTER, &def); 207 if (r) 208 def = 127; 209 pdev->red_balance = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops, 210 V4L2_CID_RED_BALANCE, 0, 255, 1, def); 211 212 r = pwc_get_u8_ctrl(pdev, GET_CHROM_CTL, 213 PRESET_MANUAL_BLUE_GAIN_FORMATTER, &def); 214 if (r) 215 def = 127; 216 pdev->blue_balance = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops, 217 V4L2_CID_BLUE_BALANCE, 0, 255, 1, def); 218 219 v4l2_ctrl_auto_cluster(3, &pdev->auto_white_balance, awb_manual, true); 220 221 /* autogain, gain */ 222 r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, AGC_MODE_FORMATTER, &def); 223 if (r || (def != 0 && def != 0xff)) 224 def = 0; 225 /* Note a register value if 0 means auto gain is on */ 226 pdev->autogain = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops, 227 V4L2_CID_AUTOGAIN, 0, 1, 1, def == 0); 228 if (!pdev->autogain) 229 return hdl->error; 230 231 r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, PRESET_AGC_FORMATTER, &def); 232 if (r || def > 63) 233 def = 31; 234 pdev->gain = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops, 235 V4L2_CID_GAIN, 0, 63, 1, def); 236 237 /* auto exposure, exposure */ 238 if (DEVICE_USE_CODEC2(pdev->type)) { 239 r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, SHUTTER_MODE_FORMATTER, 240 &def); 241 if (r || (def != 0 && def != 0xff)) 242 def = 0; 243 /* 244 * def = 0 auto, def = ff manual 245 * menu idx 0 = auto, idx 1 = manual 246 */ 247 pdev->exposure_auto = v4l2_ctrl_new_std_menu(hdl, 248 &pwc_ctrl_ops, 249 V4L2_CID_EXPOSURE_AUTO, 250 1, 0, def != 0); 251 if (!pdev->exposure_auto) 252 return hdl->error; 253 254 /* GET_LUM_CTL, PRESET_SHUTTER_FORMATTER is unreliable */ 255 r = pwc_get_u16_ctrl(pdev, GET_STATUS_CTL, 256 READ_SHUTTER_FORMATTER, &def); 257 if (r || def > 655) 258 def = 655; 259 pdev->exposure = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops, 260 V4L2_CID_EXPOSURE, 0, 655, 1, def); 261 /* CODEC2: separate auto gain & auto exposure */ 262 v4l2_ctrl_auto_cluster(2, &pdev->autogain, 0, true); 263 v4l2_ctrl_auto_cluster(2, &pdev->exposure_auto, 264 V4L2_EXPOSURE_MANUAL, true); 265 } else if (DEVICE_USE_CODEC3(pdev->type)) { 266 /* GET_LUM_CTL, PRESET_SHUTTER_FORMATTER is unreliable */ 267 r = pwc_get_u16_ctrl(pdev, GET_STATUS_CTL, 268 READ_SHUTTER_FORMATTER, &def); 269 if (r || def > 255) 270 def = 255; 271 pdev->exposure = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops, 272 V4L2_CID_EXPOSURE, 0, 255, 1, def); 273 /* CODEC3: both gain and exposure controlled by autogain */ 274 pdev->autogain_expo_cluster[0] = pdev->autogain; 275 pdev->autogain_expo_cluster[1] = pdev->gain; 276 pdev->autogain_expo_cluster[2] = pdev->exposure; 277 v4l2_ctrl_auto_cluster(3, pdev->autogain_expo_cluster, 278 0, true); 279 } 280 281 /* color / bw setting */ 282 r = pwc_get_u8_ctrl(pdev, GET_CHROM_CTL, COLOUR_MODE_FORMATTER, 283 &def); 284 if (r || (def != 0 && def != 0xff)) 285 def = 0xff; 286 /* def = 0 bw, def = ff color, menu idx 0 = color, idx 1 = bw */ 287 pdev->colorfx = v4l2_ctrl_new_std_menu(hdl, &pwc_ctrl_ops, 288 V4L2_CID_COLORFX, 1, 0, def == 0); 289 290 /* autocontour, contour */ 291 r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, AUTO_CONTOUR_FORMATTER, &def); 292 if (r || (def != 0 && def != 0xff)) 293 def = 0; 294 cfg = pwc_autocontour_cfg; 295 cfg.def = def == 0; 296 pdev->autocontour = v4l2_ctrl_new_custom(hdl, &cfg, NULL); 297 if (!pdev->autocontour) 298 return hdl->error; 299 300 r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, PRESET_CONTOUR_FORMATTER, &def); 301 if (r || def > 63) 302 def = 31; 303 cfg = pwc_contour_cfg; 304 cfg.def = def; 305 pdev->contour = v4l2_ctrl_new_custom(hdl, &cfg, NULL); 306 307 v4l2_ctrl_auto_cluster(2, &pdev->autocontour, 0, false); 308 309 /* backlight */ 310 r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, 311 BACK_LIGHT_COMPENSATION_FORMATTER, &def); 312 if (r || (def != 0 && def != 0xff)) 313 def = 0; 314 cfg = pwc_backlight_cfg; 315 cfg.name = v4l2_ctrl_get_name(cfg.id); 316 cfg.def = def == 0; 317 pdev->backlight = v4l2_ctrl_new_custom(hdl, &cfg, NULL); 318 319 /* flikker rediction */ 320 r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, 321 FLICKERLESS_MODE_FORMATTER, &def); 322 if (r || (def != 0 && def != 0xff)) 323 def = 0; 324 cfg = pwc_flicker_cfg; 325 cfg.name = v4l2_ctrl_get_name(cfg.id); 326 cfg.def = def == 0; 327 pdev->flicker = v4l2_ctrl_new_custom(hdl, &cfg, NULL); 328 329 /* Dynamic noise reduction */ 330 r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, 331 DYNAMIC_NOISE_CONTROL_FORMATTER, &def); 332 if (r || def > 3) 333 def = 2; 334 cfg = pwc_noise_reduction_cfg; 335 cfg.def = def; 336 pdev->noise_reduction = v4l2_ctrl_new_custom(hdl, &cfg, NULL); 337 338 /* Save / Restore User / Factory Settings */ 339 pdev->save_user = v4l2_ctrl_new_custom(hdl, &pwc_save_user_cfg, NULL); 340 pdev->restore_user = v4l2_ctrl_new_custom(hdl, &pwc_restore_user_cfg, 341 NULL); 342 if (pdev->restore_user) 343 pdev->restore_user->flags |= V4L2_CTRL_FLAG_UPDATE; 344 pdev->restore_factory = v4l2_ctrl_new_custom(hdl, 345 &pwc_restore_factory_cfg, 346 NULL); 347 if (pdev->restore_factory) 348 pdev->restore_factory->flags |= V4L2_CTRL_FLAG_UPDATE; 349 350 /* Auto White Balance speed & delay */ 351 r = pwc_get_u8_ctrl(pdev, GET_CHROM_CTL, 352 AWB_CONTROL_SPEED_FORMATTER, &def); 353 if (r || def < 1 || def > 32) 354 def = 1; 355 cfg = pwc_awb_speed_cfg; 356 cfg.def = def; 357 pdev->awb_speed = v4l2_ctrl_new_custom(hdl, &cfg, NULL); 358 359 r = pwc_get_u8_ctrl(pdev, GET_CHROM_CTL, 360 AWB_CONTROL_DELAY_FORMATTER, &def); 361 if (r || def > 63) 362 def = 0; 363 cfg = pwc_awb_delay_cfg; 364 cfg.def = def; 365 pdev->awb_delay = v4l2_ctrl_new_custom(hdl, &cfg, NULL); 366 367 if (!(pdev->features & FEATURE_MOTOR_PANTILT)) 368 return hdl->error; 369 370 /* Motor pan / tilt / reset */ 371 pdev->motor_pan = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops, 372 V4L2_CID_PAN_RELATIVE, -4480, 4480, 64, 0); 373 if (!pdev->motor_pan) 374 return hdl->error; 375 pdev->motor_tilt = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops, 376 V4L2_CID_TILT_RELATIVE, -1920, 1920, 64, 0); 377 pdev->motor_pan_reset = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops, 378 V4L2_CID_PAN_RESET, 0, 0, 0, 0); 379 pdev->motor_tilt_reset = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops, 380 V4L2_CID_TILT_RESET, 0, 0, 0, 0); 381 v4l2_ctrl_cluster(4, &pdev->motor_pan); 382 383 return hdl->error; 384} 385 386static void pwc_vidioc_fill_fmt(struct v4l2_format *f, 387 int width, int height, u32 pixfmt) 388{ 389 memset(&f->fmt.pix, 0, sizeof(struct v4l2_pix_format)); 390 f->fmt.pix.width = width; 391 f->fmt.pix.height = height; 392 f->fmt.pix.field = V4L2_FIELD_NONE; 393 f->fmt.pix.pixelformat = pixfmt; 394 f->fmt.pix.bytesperline = f->fmt.pix.width; 395 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.width * 3 / 2; 396 f->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB; 397 PWC_DEBUG_IOCTL("pwc_vidioc_fill_fmt() width=%d, height=%d, bytesperline=%d, sizeimage=%d, pixelformat=%c%c%c%c\n", 398 f->fmt.pix.width, 399 f->fmt.pix.height, 400 f->fmt.pix.bytesperline, 401 f->fmt.pix.sizeimage, 402 (f->fmt.pix.pixelformat)&255, 403 (f->fmt.pix.pixelformat>>8)&255, 404 (f->fmt.pix.pixelformat>>16)&255, 405 (f->fmt.pix.pixelformat>>24)&255); 406} 407 408/* ioctl(VIDIOC_TRY_FMT) */ 409static int pwc_vidioc_try_fmt(struct pwc_device *pdev, struct v4l2_format *f) 410{ 411 int size; 412 413 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { 414 PWC_DEBUG_IOCTL("Bad video type must be V4L2_BUF_TYPE_VIDEO_CAPTURE\n"); 415 return -EINVAL; 416 } 417 418 switch (f->fmt.pix.pixelformat) { 419 case V4L2_PIX_FMT_YUV420: 420 break; 421 case V4L2_PIX_FMT_PWC1: 422 if (DEVICE_USE_CODEC23(pdev->type)) { 423 PWC_DEBUG_IOCTL("codec1 is only supported for old pwc webcam\n"); 424 f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUV420; 425 } 426 break; 427 case V4L2_PIX_FMT_PWC2: 428 if (DEVICE_USE_CODEC1(pdev->type)) { 429 PWC_DEBUG_IOCTL("codec23 is only supported for new pwc webcam\n"); 430 f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUV420; 431 } 432 break; 433 default: 434 PWC_DEBUG_IOCTL("Unsupported pixel format\n"); 435 f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUV420; 436 } 437 438 size = pwc_get_size(pdev, f->fmt.pix.width, f->fmt.pix.height); 439 pwc_vidioc_fill_fmt(f, 440 pwc_image_sizes[size][0], 441 pwc_image_sizes[size][1], 442 f->fmt.pix.pixelformat); 443 444 return 0; 445} 446 447/* ioctl(VIDIOC_SET_FMT) */ 448 449static int pwc_s_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f) 450{ 451 struct pwc_device *pdev = video_drvdata(file); 452 int ret, pixelformat, compression = 0; 453 454 ret = pwc_vidioc_try_fmt(pdev, f); 455 if (ret < 0) 456 return ret; 457 458 if (vb2_is_busy(&pdev->vb_queue)) 459 return -EBUSY; 460 461 pixelformat = f->fmt.pix.pixelformat; 462 463 PWC_DEBUG_IOCTL("Trying to set format to: width=%d height=%d fps=%d format=%c%c%c%c\n", 464 f->fmt.pix.width, f->fmt.pix.height, pdev->vframes, 465 (pixelformat)&255, 466 (pixelformat>>8)&255, 467 (pixelformat>>16)&255, 468 (pixelformat>>24)&255); 469 470 ret = pwc_set_video_mode(pdev, f->fmt.pix.width, f->fmt.pix.height, 471 pixelformat, 30, &compression, 0); 472 473 PWC_DEBUG_IOCTL("pwc_set_video_mode(), return=%d\n", ret); 474 475 pwc_vidioc_fill_fmt(f, pdev->width, pdev->height, pdev->pixfmt); 476 return ret; 477} 478 479static int pwc_querycap(struct file *file, void *fh, struct v4l2_capability *cap) 480{ 481 struct pwc_device *pdev = video_drvdata(file); 482 483 strscpy(cap->driver, PWC_NAME, sizeof(cap->driver)); 484 strscpy(cap->card, pdev->vdev.name, sizeof(cap->card)); 485 usb_make_path(pdev->udev, cap->bus_info, sizeof(cap->bus_info)); 486 return 0; 487} 488 489static int pwc_enum_input(struct file *file, void *fh, struct v4l2_input *i) 490{ 491 if (i->index) /* Only one INPUT is supported */ 492 return -EINVAL; 493 494 strscpy(i->name, "Camera", sizeof(i->name)); 495 i->type = V4L2_INPUT_TYPE_CAMERA; 496 return 0; 497} 498 499static int pwc_g_input(struct file *file, void *fh, unsigned int *i) 500{ 501 *i = 0; 502 return 0; 503} 504 505static int pwc_s_input(struct file *file, void *fh, unsigned int i) 506{ 507 return i ? -EINVAL : 0; 508} 509 510static int pwc_g_volatile_ctrl(struct v4l2_ctrl *ctrl) 511{ 512 struct pwc_device *pdev = 513 container_of(ctrl->handler, struct pwc_device, ctrl_handler); 514 int ret = 0; 515 516 switch (ctrl->id) { 517 case V4L2_CID_AUTO_WHITE_BALANCE: 518 if (pdev->color_bal_valid && 519 (pdev->auto_white_balance->val != awb_auto || 520 time_before(jiffies, 521 pdev->last_color_bal_update + HZ / 4))) { 522 pdev->red_balance->val = pdev->last_red_balance; 523 pdev->blue_balance->val = pdev->last_blue_balance; 524 break; 525 } 526 ret = pwc_get_u8_ctrl(pdev, GET_STATUS_CTL, 527 READ_RED_GAIN_FORMATTER, 528 &pdev->red_balance->val); 529 if (ret) 530 break; 531 ret = pwc_get_u8_ctrl(pdev, GET_STATUS_CTL, 532 READ_BLUE_GAIN_FORMATTER, 533 &pdev->blue_balance->val); 534 if (ret) 535 break; 536 pdev->last_red_balance = pdev->red_balance->val; 537 pdev->last_blue_balance = pdev->blue_balance->val; 538 pdev->last_color_bal_update = jiffies; 539 pdev->color_bal_valid = true; 540 break; 541 case V4L2_CID_AUTOGAIN: 542 if (pdev->gain_valid && time_before(jiffies, 543 pdev->last_gain_update + HZ / 4)) { 544 pdev->gain->val = pdev->last_gain; 545 break; 546 } 547 ret = pwc_get_u8_ctrl(pdev, GET_STATUS_CTL, 548 READ_AGC_FORMATTER, &pdev->gain->val); 549 if (ret) 550 break; 551 pdev->last_gain = pdev->gain->val; 552 pdev->last_gain_update = jiffies; 553 pdev->gain_valid = true; 554 if (!DEVICE_USE_CODEC3(pdev->type)) 555 break; 556 /* For CODEC3 where autogain also controls expo */ 557 fallthrough; 558 case V4L2_CID_EXPOSURE_AUTO: 559 if (pdev->exposure_valid && time_before(jiffies, 560 pdev->last_exposure_update + HZ / 4)) { 561 pdev->exposure->val = pdev->last_exposure; 562 break; 563 } 564 ret = pwc_get_u16_ctrl(pdev, GET_STATUS_CTL, 565 READ_SHUTTER_FORMATTER, 566 &pdev->exposure->val); 567 if (ret) 568 break; 569 pdev->last_exposure = pdev->exposure->val; 570 pdev->last_exposure_update = jiffies; 571 pdev->exposure_valid = true; 572 break; 573 default: 574 ret = -EINVAL; 575 } 576 577 if (ret) 578 PWC_ERROR("g_ctrl %s error %d\n", ctrl->name, ret); 579 580 return ret; 581} 582 583static int pwc_set_awb(struct pwc_device *pdev) 584{ 585 int ret; 586 587 if (pdev->auto_white_balance->is_new) { 588 ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL, 589 WB_MODE_FORMATTER, 590 pdev->auto_white_balance->val); 591 if (ret) 592 return ret; 593 594 if (pdev->auto_white_balance->val != awb_manual) 595 pdev->color_bal_valid = false; /* Force cache update */ 596 597 /* 598 * If this is a preset, update our red / blue balance values 599 * so that events get generated for the new preset values 600 */ 601 if (pdev->auto_white_balance->val == awb_indoor || 602 pdev->auto_white_balance->val == awb_outdoor || 603 pdev->auto_white_balance->val == awb_fl) 604 pwc_g_volatile_ctrl(pdev->auto_white_balance); 605 } 606 if (pdev->auto_white_balance->val != awb_manual) 607 return 0; 608 609 if (pdev->red_balance->is_new) { 610 ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL, 611 PRESET_MANUAL_RED_GAIN_FORMATTER, 612 pdev->red_balance->val); 613 if (ret) 614 return ret; 615 } 616 617 if (pdev->blue_balance->is_new) { 618 ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL, 619 PRESET_MANUAL_BLUE_GAIN_FORMATTER, 620 pdev->blue_balance->val); 621 if (ret) 622 return ret; 623 } 624 return 0; 625} 626 627/* For CODEC2 models which have separate autogain and auto exposure */ 628static int pwc_set_autogain(struct pwc_device *pdev) 629{ 630 int ret; 631 632 if (pdev->autogain->is_new) { 633 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL, 634 AGC_MODE_FORMATTER, 635 pdev->autogain->val ? 0 : 0xff); 636 if (ret) 637 return ret; 638 639 if (pdev->autogain->val) 640 pdev->gain_valid = false; /* Force cache update */ 641 } 642 643 if (pdev->autogain->val) 644 return 0; 645 646 if (pdev->gain->is_new) { 647 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL, 648 PRESET_AGC_FORMATTER, 649 pdev->gain->val); 650 if (ret) 651 return ret; 652 } 653 return 0; 654} 655 656/* For CODEC2 models which have separate autogain and auto exposure */ 657static int pwc_set_exposure_auto(struct pwc_device *pdev) 658{ 659 int ret; 660 int is_auto = pdev->exposure_auto->val == V4L2_EXPOSURE_AUTO; 661 662 if (pdev->exposure_auto->is_new) { 663 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL, 664 SHUTTER_MODE_FORMATTER, 665 is_auto ? 0 : 0xff); 666 if (ret) 667 return ret; 668 669 if (is_auto) 670 pdev->exposure_valid = false; /* Force cache update */ 671 } 672 673 if (is_auto) 674 return 0; 675 676 if (pdev->exposure->is_new) { 677 ret = pwc_set_u16_ctrl(pdev, SET_LUM_CTL, 678 PRESET_SHUTTER_FORMATTER, 679 pdev->exposure->val); 680 if (ret) 681 return ret; 682 } 683 return 0; 684} 685 686/* For CODEC3 models which have autogain controlling both gain and exposure */ 687static int pwc_set_autogain_expo(struct pwc_device *pdev) 688{ 689 int ret; 690 691 if (pdev->autogain->is_new) { 692 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL, 693 AGC_MODE_FORMATTER, 694 pdev->autogain->val ? 0 : 0xff); 695 if (ret) 696 return ret; 697 698 if (pdev->autogain->val) { 699 pdev->gain_valid = false; /* Force cache update */ 700 pdev->exposure_valid = false; /* Force cache update */ 701 } 702 } 703 704 if (pdev->autogain->val) 705 return 0; 706 707 if (pdev->gain->is_new) { 708 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL, 709 PRESET_AGC_FORMATTER, 710 pdev->gain->val); 711 if (ret) 712 return ret; 713 } 714 715 if (pdev->exposure->is_new) { 716 ret = pwc_set_u16_ctrl(pdev, SET_LUM_CTL, 717 PRESET_SHUTTER_FORMATTER, 718 pdev->exposure->val); 719 if (ret) 720 return ret; 721 } 722 return 0; 723} 724 725static int pwc_set_motor(struct pwc_device *pdev) 726{ 727 int ret; 728 729 pdev->ctrl_buf[0] = 0; 730 if (pdev->motor_pan_reset->is_new) 731 pdev->ctrl_buf[0] |= 0x01; 732 if (pdev->motor_tilt_reset->is_new) 733 pdev->ctrl_buf[0] |= 0x02; 734 if (pdev->motor_pan_reset->is_new || pdev->motor_tilt_reset->is_new) { 735 ret = send_control_msg(pdev, SET_MPT_CTL, 736 PT_RESET_CONTROL_FORMATTER, 737 pdev->ctrl_buf, 1); 738 if (ret < 0) 739 return ret; 740 } 741 742 memset(pdev->ctrl_buf, 0, 4); 743 if (pdev->motor_pan->is_new) { 744 pdev->ctrl_buf[0] = pdev->motor_pan->val & 0xFF; 745 pdev->ctrl_buf[1] = (pdev->motor_pan->val >> 8); 746 } 747 if (pdev->motor_tilt->is_new) { 748 pdev->ctrl_buf[2] = pdev->motor_tilt->val & 0xFF; 749 pdev->ctrl_buf[3] = (pdev->motor_tilt->val >> 8); 750 } 751 if (pdev->motor_pan->is_new || pdev->motor_tilt->is_new) { 752 ret = send_control_msg(pdev, SET_MPT_CTL, 753 PT_RELATIVE_CONTROL_FORMATTER, 754 pdev->ctrl_buf, 4); 755 if (ret < 0) 756 return ret; 757 } 758 759 return 0; 760} 761 762static int pwc_s_ctrl(struct v4l2_ctrl *ctrl) 763{ 764 struct pwc_device *pdev = 765 container_of(ctrl->handler, struct pwc_device, ctrl_handler); 766 int ret = 0; 767 768 switch (ctrl->id) { 769 case V4L2_CID_BRIGHTNESS: 770 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL, 771 BRIGHTNESS_FORMATTER, ctrl->val); 772 break; 773 case V4L2_CID_CONTRAST: 774 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL, 775 CONTRAST_FORMATTER, ctrl->val); 776 break; 777 case V4L2_CID_SATURATION: 778 ret = pwc_set_s8_ctrl(pdev, SET_CHROM_CTL, 779 pdev->saturation_fmt, ctrl->val); 780 break; 781 case V4L2_CID_GAMMA: 782 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL, 783 GAMMA_FORMATTER, ctrl->val); 784 break; 785 case V4L2_CID_AUTO_WHITE_BALANCE: 786 ret = pwc_set_awb(pdev); 787 break; 788 case V4L2_CID_AUTOGAIN: 789 if (DEVICE_USE_CODEC2(pdev->type)) 790 ret = pwc_set_autogain(pdev); 791 else if (DEVICE_USE_CODEC3(pdev->type)) 792 ret = pwc_set_autogain_expo(pdev); 793 else 794 ret = -EINVAL; 795 break; 796 case V4L2_CID_EXPOSURE_AUTO: 797 if (DEVICE_USE_CODEC2(pdev->type)) 798 ret = pwc_set_exposure_auto(pdev); 799 else 800 ret = -EINVAL; 801 break; 802 case V4L2_CID_COLORFX: 803 ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL, 804 COLOUR_MODE_FORMATTER, 805 ctrl->val ? 0 : 0xff); 806 break; 807 case PWC_CID_CUSTOM(autocontour): 808 if (pdev->autocontour->is_new) { 809 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL, 810 AUTO_CONTOUR_FORMATTER, 811 pdev->autocontour->val ? 0 : 0xff); 812 } 813 if (ret == 0 && pdev->contour->is_new) { 814 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL, 815 PRESET_CONTOUR_FORMATTER, 816 pdev->contour->val); 817 } 818 break; 819 case V4L2_CID_BACKLIGHT_COMPENSATION: 820 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL, 821 BACK_LIGHT_COMPENSATION_FORMATTER, 822 ctrl->val ? 0 : 0xff); 823 break; 824 case V4L2_CID_BAND_STOP_FILTER: 825 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL, 826 FLICKERLESS_MODE_FORMATTER, 827 ctrl->val ? 0 : 0xff); 828 break; 829 case PWC_CID_CUSTOM(noise_reduction): 830 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL, 831 DYNAMIC_NOISE_CONTROL_FORMATTER, 832 ctrl->val); 833 break; 834 case PWC_CID_CUSTOM(save_user): 835 ret = pwc_button_ctrl(pdev, SAVE_USER_DEFAULTS_FORMATTER); 836 break; 837 case PWC_CID_CUSTOM(restore_user): 838 ret = pwc_button_ctrl(pdev, RESTORE_USER_DEFAULTS_FORMATTER); 839 break; 840 case PWC_CID_CUSTOM(restore_factory): 841 ret = pwc_button_ctrl(pdev, 842 RESTORE_FACTORY_DEFAULTS_FORMATTER); 843 break; 844 case PWC_CID_CUSTOM(awb_speed): 845 ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL, 846 AWB_CONTROL_SPEED_FORMATTER, 847 ctrl->val); 848 break; 849 case PWC_CID_CUSTOM(awb_delay): 850 ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL, 851 AWB_CONTROL_DELAY_FORMATTER, 852 ctrl->val); 853 break; 854 case V4L2_CID_PAN_RELATIVE: 855 ret = pwc_set_motor(pdev); 856 break; 857 default: 858 ret = -EINVAL; 859 } 860 861 if (ret) 862 PWC_ERROR("s_ctrl %s error %d\n", ctrl->name, ret); 863 864 return ret; 865} 866 867static int pwc_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *f) 868{ 869 struct pwc_device *pdev = video_drvdata(file); 870 871 /* We only support two format: the raw format, and YUV */ 872 switch (f->index) { 873 case 0: 874 /* RAW format */ 875 f->pixelformat = pdev->type <= 646 ? V4L2_PIX_FMT_PWC1 : V4L2_PIX_FMT_PWC2; 876 break; 877 case 1: 878 f->pixelformat = V4L2_PIX_FMT_YUV420; 879 break; 880 default: 881 return -EINVAL; 882 } 883 return 0; 884} 885 886static int pwc_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f) 887{ 888 struct pwc_device *pdev = video_drvdata(file); 889 890 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) 891 return -EINVAL; 892 893 PWC_DEBUG_IOCTL("ioctl(VIDIOC_G_FMT) return size %dx%d\n", 894 pdev->width, pdev->height); 895 pwc_vidioc_fill_fmt(f, pdev->width, pdev->height, pdev->pixfmt); 896 return 0; 897} 898 899static int pwc_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f) 900{ 901 struct pwc_device *pdev = video_drvdata(file); 902 903 return pwc_vidioc_try_fmt(pdev, f); 904} 905 906static int pwc_enum_framesizes(struct file *file, void *fh, 907 struct v4l2_frmsizeenum *fsize) 908{ 909 struct pwc_device *pdev = video_drvdata(file); 910 unsigned int i = 0, index = fsize->index; 911 912 if (fsize->pixel_format == V4L2_PIX_FMT_YUV420 || 913 (fsize->pixel_format == V4L2_PIX_FMT_PWC1 && 914 DEVICE_USE_CODEC1(pdev->type)) || 915 (fsize->pixel_format == V4L2_PIX_FMT_PWC2 && 916 DEVICE_USE_CODEC23(pdev->type))) { 917 for (i = 0; i < PSZ_MAX; i++) { 918 if (!(pdev->image_mask & (1UL << i))) 919 continue; 920 if (!index--) { 921 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE; 922 fsize->discrete.width = pwc_image_sizes[i][0]; 923 fsize->discrete.height = pwc_image_sizes[i][1]; 924 return 0; 925 } 926 } 927 } 928 return -EINVAL; 929} 930 931static int pwc_enum_frameintervals(struct file *file, void *fh, 932 struct v4l2_frmivalenum *fival) 933{ 934 struct pwc_device *pdev = video_drvdata(file); 935 int size = -1; 936 unsigned int i; 937 938 for (i = 0; i < PSZ_MAX; i++) { 939 if (pwc_image_sizes[i][0] == fival->width && 940 pwc_image_sizes[i][1] == fival->height) { 941 size = i; 942 break; 943 } 944 } 945 946 /* TODO: Support raw format */ 947 if (size < 0 || fival->pixel_format != V4L2_PIX_FMT_YUV420) 948 return -EINVAL; 949 950 i = pwc_get_fps(pdev, fival->index, size); 951 if (!i) 952 return -EINVAL; 953 954 fival->type = V4L2_FRMIVAL_TYPE_DISCRETE; 955 fival->discrete.numerator = 1; 956 fival->discrete.denominator = i; 957 958 return 0; 959} 960 961static int pwc_g_parm(struct file *file, void *fh, 962 struct v4l2_streamparm *parm) 963{ 964 struct pwc_device *pdev = video_drvdata(file); 965 966 if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) 967 return -EINVAL; 968 969 memset(parm, 0, sizeof(*parm)); 970 971 parm->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 972 parm->parm.capture.readbuffers = MIN_FRAMES; 973 parm->parm.capture.capability |= V4L2_CAP_TIMEPERFRAME; 974 parm->parm.capture.timeperframe.denominator = pdev->vframes; 975 parm->parm.capture.timeperframe.numerator = 1; 976 977 return 0; 978} 979 980static int pwc_s_parm(struct file *file, void *fh, 981 struct v4l2_streamparm *parm) 982{ 983 struct pwc_device *pdev = video_drvdata(file); 984 int compression = 0; 985 int ret, fps; 986 987 if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) 988 return -EINVAL; 989 990 /* If timeperframe == 0, then reset the framerate to the nominal value. 991 We pick a high framerate here, and let pwc_set_video_mode() figure 992 out the best match. */ 993 if (parm->parm.capture.timeperframe.numerator == 0 || 994 parm->parm.capture.timeperframe.denominator == 0) 995 fps = 30; 996 else 997 fps = parm->parm.capture.timeperframe.denominator / 998 parm->parm.capture.timeperframe.numerator; 999 1000 if (vb2_is_busy(&pdev->vb_queue)) 1001 return -EBUSY; 1002 1003 ret = pwc_set_video_mode(pdev, pdev->width, pdev->height, pdev->pixfmt, 1004 fps, &compression, 0); 1005 1006 pwc_g_parm(file, fh, parm); 1007 1008 return ret; 1009} 1010 1011const struct v4l2_ioctl_ops pwc_ioctl_ops = { 1012 .vidioc_querycap = pwc_querycap, 1013 .vidioc_enum_input = pwc_enum_input, 1014 .vidioc_g_input = pwc_g_input, 1015 .vidioc_s_input = pwc_s_input, 1016 .vidioc_enum_fmt_vid_cap = pwc_enum_fmt_vid_cap, 1017 .vidioc_g_fmt_vid_cap = pwc_g_fmt_vid_cap, 1018 .vidioc_s_fmt_vid_cap = pwc_s_fmt_vid_cap, 1019 .vidioc_try_fmt_vid_cap = pwc_try_fmt_vid_cap, 1020 .vidioc_reqbufs = vb2_ioctl_reqbufs, 1021 .vidioc_querybuf = vb2_ioctl_querybuf, 1022 .vidioc_qbuf = vb2_ioctl_qbuf, 1023 .vidioc_dqbuf = vb2_ioctl_dqbuf, 1024 .vidioc_streamon = vb2_ioctl_streamon, 1025 .vidioc_streamoff = vb2_ioctl_streamoff, 1026 .vidioc_log_status = v4l2_ctrl_log_status, 1027 .vidioc_enum_framesizes = pwc_enum_framesizes, 1028 .vidioc_enum_frameintervals = pwc_enum_frameintervals, 1029 .vidioc_g_parm = pwc_g_parm, 1030 .vidioc_s_parm = pwc_s_parm, 1031 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 1032 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 1033};
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