drivers/media/video/pwc/pwc-ctrl.c

   1 /* Driver for Philips webcam
   2    Functions that send various control messages to the webcam, including
   3    video modes.
   4    (C) 1999-2003 Nemosoft Unv.
   5    (C) 2004-2006 Luc Saillard (luc@saillard.org)
   6
   7    NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
   8    driver and thus may have bugs that are not present in the original version.
   9    Please send bug reports and support requests to <luc@saillard.org>.
  10
  11    NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
  12    driver and thus may have bugs that are not present in the original version.
  13    Please send bug reports and support requests to <luc@saillard.org>.
  14    The decompression routines have been implemented by reverse-engineering the
  15    Nemosoft binary pwcx module. Caveat emptor.
  16
  17    This program is free software; you can redistribute it and/or modify
  18    it under the terms of the GNU General Public License as published by
  19    the Free Software Foundation; either version 2 of the License, or
  20    (at your option) any later version.
  21
  22    This program is distributed in the hope that it will be useful,
  23    but WITHOUT ANY WARRANTY; without even the implied warranty of
  24    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25    GNU General Public License for more details.
  26
  27    You should have received a copy of the GNU General Public License
  28    along with this program; if not, write to the Free Software
  29    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  30 */
  31
  32 /*
  33    Changes
  34    2001/08/03  Alvarado   Added methods for changing white balance and
  35                           red/green gains
  36  */
  37
  38 /* Control functions for the cam; brightness, contrast, video mode, etc. */
  39
  40 #ifdef __KERNEL__
  41 #include <asm/uaccess.h>
  42 #endif
  43 #include <asm/errno.h>
  44
  45 #include "pwc.h"
  46 #include "pwc-uncompress.h"
  47 #include "pwc-kiara.h"
  48 #include "pwc-timon.h"
  49 #include "pwc-dec1.h"
  50 #include "pwc-dec23.h"
  51
  52 /* Request types: video */
  53 #define SET_LUM_CTL                     0x01
  54 #define GET_LUM_CTL                     0x02
  55 #define SET_CHROM_CTL                   0x03
  56 #define GET_CHROM_CTL                   0x04
  57 #define SET_STATUS_CTL                  0x05
  58 #define GET_STATUS_CTL                  0x06
  59 #define SET_EP_STREAM_CTL               0x07
  60 #define GET_EP_STREAM_CTL               0x08
  61 #define GET_XX_CTL                      0x09
  62 #define SET_XX_CTL                      0x0A
  63 #define GET_XY_CTL                      0x0B
  64 #define SET_XY_CTL                      0x0C
  65 #define SET_MPT_CTL                     0x0D
  66 #define GET_MPT_CTL                     0x0E
  67
  68 /* Selectors for the Luminance controls [GS]ET_LUM_CTL */
  69 #define AGC_MODE_FORMATTER                      0x2000
  70 #define PRESET_AGC_FORMATTER                    0x2100
  71 #define SHUTTER_MODE_FORMATTER                  0x2200
  72 #define PRESET_SHUTTER_FORMATTER                0x2300
  73 #define PRESET_CONTOUR_FORMATTER                0x2400
  74 #define AUTO_CONTOUR_FORMATTER                  0x2500
  75 #define BACK_LIGHT_COMPENSATION_FORMATTER       0x2600
  76 #define CONTRAST_FORMATTER                      0x2700
  77 #define DYNAMIC_NOISE_CONTROL_FORMATTER         0x2800
  78 #define FLICKERLESS_MODE_FORMATTER              0x2900
  79 #define AE_CONTROL_SPEED                        0x2A00
  80 #define BRIGHTNESS_FORMATTER                    0x2B00
  81 #define GAMMA_FORMATTER                         0x2C00
  82
  83 /* Selectors for the Chrominance controls [GS]ET_CHROM_CTL */
  84 #define WB_MODE_FORMATTER                       0x1000
  85 #define AWB_CONTROL_SPEED_FORMATTER             0x1100
  86 #define AWB_CONTROL_DELAY_FORMATTER             0x1200
  87 #define PRESET_MANUAL_RED_GAIN_FORMATTER        0x1300
  88 #define PRESET_MANUAL_BLUE_GAIN_FORMATTER       0x1400
  89 #define COLOUR_MODE_FORMATTER                   0x1500
  90 #define SATURATION_MODE_FORMATTER1              0x1600
  91 #define SATURATION_MODE_FORMATTER2              0x1700
  92
  93 /* Selectors for the Status controls [GS]ET_STATUS_CTL */
  94 #define SAVE_USER_DEFAULTS_FORMATTER            0x0200
  95 #define RESTORE_USER_DEFAULTS_FORMATTER         0x0300
  96 #define RESTORE_FACTORY_DEFAULTS_FORMATTER      0x0400
  97 #define READ_AGC_FORMATTER                      0x0500
  98 #define READ_SHUTTER_FORMATTER                  0x0600
  99 #define READ_RED_GAIN_FORMATTER                 0x0700
 100 #define READ_BLUE_GAIN_FORMATTER                0x0800
 101 #define GET_STATUS_B00                          0x0B00
 102 #define SENSOR_TYPE_FORMATTER1                  0x0C00
 103 #define GET_STATUS_3000                         0x3000
 104 #define READ_RAW_Y_MEAN_FORMATTER               0x3100
 105 #define SET_POWER_SAVE_MODE_FORMATTER           0x3200
 106 #define MIRROR_IMAGE_FORMATTER                  0x3300
 107 #define LED_FORMATTER                           0x3400
 108 #define LOWLIGHT                                0x3500
 109 #define GET_STATUS_3600                         0x3600
 110 #define SENSOR_TYPE_FORMATTER2                  0x3700
 111 #define GET_STATUS_3800                         0x3800
 112 #define GET_STATUS_4000                         0x4000
 113 #define GET_STATUS_4100                         0x4100  /* Get */
 114 #define CTL_STATUS_4200                         0x4200  /* [GS] 1 */
 115
 116 /* Formatters for the Video Endpoint controls [GS]ET_EP_STREAM_CTL */
 117 #define VIDEO_OUTPUT_CONTROL_FORMATTER          0x0100
 118
 119 /* Formatters for the motorized pan & tilt [GS]ET_MPT_CTL */
 120 #define PT_RELATIVE_CONTROL_FORMATTER           0x01
 121 #define PT_RESET_CONTROL_FORMATTER              0x02
 122 #define PT_STATUS_FORMATTER                     0x03
 123
 124 static const char *size2name[PSZ_MAX] =
 125 {
 126         "subQCIF",
 127         "QSIF",
 128         "QCIF",
 129         "SIF",
 130         "CIF",
 131         "VGA",
 132 };
 133
 134 /********/
 135
 136 /* Entries for the Nala (645/646) camera; the Nala doesn't have compression
 137    preferences, so you either get compressed or non-compressed streams.
 138
 139    An alternate value of 0 means this mode is not available at all.
 140  */
 141
 142 #define PWC_FPS_MAX_NALA 8
 143
 144 struct Nala_table_entry {
 145         char alternate;                 /* USB alternate setting */
 146         int compressed;                 /* Compressed yes/no */
 147
 148         unsigned char mode[3];          /* precomputed mode table */
 149 };
 150
 151 static unsigned int Nala_fps_vector[PWC_FPS_MAX_NALA] = { 4, 5, 7, 10, 12, 15, 20, 24 };
 152
 153 static struct Nala_table_entry Nala_table[PSZ_MAX][PWC_FPS_MAX_NALA] =
 154 {
 155 #include "pwc-nala.h"
 156 };
 157
 158 static void pwc_set_image_buffer_size(struct pwc_device *pdev);
 159
 160 /****************************************************************************/
 161
 162 static int _send_control_msg(struct pwc_device *pdev,
 163         u8 request, u16 value, int index, void *buf, int buflen, int timeout)
 164 {
 165         int rc;
 166         void *kbuf = NULL;
 167
 168         if (buflen) {
 169                 kbuf = kmalloc(buflen, GFP_KERNEL); /* not allowed on stack */
 170                 if (kbuf == NULL)
 171                         return -ENOMEM;
 172                 memcpy(kbuf, buf, buflen);
 173         }
 174
 175         rc = usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
 176                 request,
 177                 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 178                 value,
 179                 index,
 180                 kbuf, buflen, timeout);
 181
 182         kfree(kbuf);
 183         return rc;
 184 }
 185
 186 static int recv_control_msg(struct pwc_device *pdev,
 187         u8 request, u16 value, void *buf, int buflen)
 188 {
 189         int rc;
 190         void *kbuf = kmalloc(buflen, GFP_KERNEL); /* not allowed on stack */
 191
 192         if (kbuf == NULL)
 193                 return -ENOMEM;
 194
 195         rc = usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0),
 196                 request,
 197                 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 198                 value,
 199                 pdev->vcinterface,
 200                 kbuf, buflen, 500);
 201         memcpy(buf, kbuf, buflen);
 202         kfree(kbuf);
 203         return rc;
 204 }
 205
 206 static inline int send_video_command(struct pwc_device *pdev,
 207         int index, void *buf, int buflen)
 208 {
 209         return _send_control_msg(pdev,
 210                 SET_EP_STREAM_CTL,
 211                 VIDEO_OUTPUT_CONTROL_FORMATTER,
 212                 index,
 213                 buf, buflen, 1000);
 214 }
 215
 216 static inline int send_control_msg(struct pwc_device *pdev,
 217         u8 request, u16 value, void *buf, int buflen)
 218 {
 219         return _send_control_msg(pdev,
 220                 request, value, pdev->vcinterface, buf, buflen, 500);
 221 }
 222
 223
 224
 225 static int set_video_mode_Nala(struct pwc_device *pdev, int size, int frames)
 226 {
 227         unsigned char buf[3];
 228         int ret, fps;
 229         struct Nala_table_entry *pEntry;
 230         int frames2frames[31] =
 231         { /* closest match of framerate */
 232            0,  0,  0,  0,  4,  /*  0-4  */
 233            5,  5,  7,  7, 10,  /*  5-9  */
 234           10, 10, 12, 12, 15,  /* 10-14 */
 235           15, 15, 15, 20, 20,  /* 15-19 */
 236           20, 20, 20, 24, 24,  /* 20-24 */
 237           24, 24, 24, 24, 24,  /* 25-29 */
 238           24                   /* 30    */
 239         };
 240         int frames2table[31] =
 241         { 0, 0, 0, 0, 0, /*  0-4  */
 242           1, 1, 1, 2, 2, /*  5-9  */
 243           3, 3, 4, 4, 4, /* 10-14 */
 244           5, 5, 5, 5, 5, /* 15-19 */
 245           6, 6, 6, 6, 7, /* 20-24 */
 246           7, 7, 7, 7, 7, /* 25-29 */
 247           7              /* 30    */
 248         };
 249
 250         if (size < 0 || size > PSZ_CIF || frames < 4 || frames > 25)
 251                 return -EINVAL;
 252         frames = frames2frames[frames];
 253         fps = frames2table[frames];
 254         pEntry = &Nala_table[size][fps];
 255         if (pEntry->alternate == 0)
 256                 return -EINVAL;
 257
 258         memcpy(buf, pEntry->mode, 3);
 259         ret = send_video_command(pdev, pdev->vendpoint, buf, 3);
 260         if (ret < 0) {
 261                 PWC_DEBUG_MODULE("Failed to send video command... %d\n", ret);
 262                 return ret;
 263         }
 264         if (pEntry->compressed && pdev->vpalette != VIDEO_PALETTE_RAW)
 265                 pwc_dec1_init(pdev->type, pdev->release, buf, pdev->decompress_data);
 266
 267         pdev->cmd_len = 3;
 268         memcpy(pdev->cmd_buf, buf, 3);
 269
 270         /* Set various parameters */
 271         pdev->vframes = frames;
 272         pdev->vsize = size;
 273         pdev->valternate = pEntry->alternate;
 274         pdev->image = pwc_image_sizes[size];
 275         pdev->frame_size = (pdev->image.x * pdev->image.y * 3) / 2;
 276         if (pEntry->compressed) {
 277                 if (pdev->release < 5) { /* 4 fold compression */
 278                         pdev->vbandlength = 528;
 279                         pdev->frame_size /= 4;
 280                 }
 281                 else {
 282                         pdev->vbandlength = 704;
 283                         pdev->frame_size /= 3;
 284                 }
 285         }
 286         else
 287                 pdev->vbandlength = 0;
 288         return 0;
 289 }
 290
 291
 292 static int set_video_mode_Timon(struct pwc_device *pdev, int size, int frames, int compression, int snapshot)
 293 {
 294         unsigned char buf[13];
 295         const struct Timon_table_entry *pChoose;
 296         int ret, fps;
 297
 298         if (size >= PSZ_MAX || frames < 5 || frames > 30 || compression < 0 || compression > 3)
 299                 return -EINVAL;
 300         if (size == PSZ_VGA && frames > 15)
 301                 return -EINVAL;
 302         fps = (frames / 5) - 1;
 303
 304         /* Find a supported framerate with progressively higher compression ratios
 305            if the preferred ratio is not available.
 306         */
 307         pChoose = NULL;
 308         while (compression <= 3) {
 309            pChoose = &Timon_table[size][fps][compression];
 310            if (pChoose->alternate != 0)
 311              break;
 312            compression++;
 313         }
 314         if (pChoose == NULL || pChoose->alternate == 0)
 315                 return -ENOENT; /* Not supported. */
 316
 317         memcpy(buf, pChoose->mode, 13);
 318         if (snapshot)
 319                 buf[0] |= 0x80;
 320         ret = send_video_command(pdev, pdev->vendpoint, buf, 13);
 321         if (ret < 0)
 322                 return ret;
 323
 324         if (pChoose->bandlength > 0 && pdev->vpalette != VIDEO_PALETTE_RAW)
 325                 pwc_dec23_init(pdev, pdev->type, buf);
 326
 327         pdev->cmd_len = 13;
 328         memcpy(pdev->cmd_buf, buf, 13);
 329
 330         /* Set various parameters */
 331         pdev->vframes = frames;
 332         pdev->vsize = size;
 333         pdev->vsnapshot = snapshot;
 334         pdev->valternate = pChoose->alternate;
 335         pdev->image = pwc_image_sizes[size];
 336         pdev->vbandlength = pChoose->bandlength;
 337         if (pChoose->bandlength > 0)
 338                 pdev->frame_size = (pChoose->bandlength * pdev->image.y) / 4;
 339         else
 340                 pdev->frame_size = (pdev->image.x * pdev->image.y * 12) / 8;
 341         return 0;
 342 }
 343
 344
 345 static int set_video_mode_Kiara(struct pwc_device *pdev, int size, int frames, int compression, int snapshot)
 346 {
 347         const struct Kiara_table_entry *pChoose = NULL;
 348         int fps, ret;
 349         unsigned char buf[12];
 350         struct Kiara_table_entry RawEntry = {6, 773, 1272, {0xAD, 0xF4, 0x10, 0x27, 0xB6, 0x24, 0x96, 0x02, 0x30, 0x05, 0x03, 0x80}};
 351
 352         if (size >= PSZ_MAX || frames < 5 || frames > 30 || compression < 0 || compression > 3)
 353                 return -EINVAL;
 354         if (size == PSZ_VGA && frames > 15)
 355                 return -EINVAL;
 356         fps = (frames / 5) - 1;
 357
 358         /* special case: VGA @ 5 fps and snapshot is raw bayer mode */
 359         if (size == PSZ_VGA && frames == 5 && snapshot && pdev->vpalette == VIDEO_PALETTE_RAW)
 360         {
 361                 /* Only available in case the raw palette is selected or
 362                    we have the decompressor available. This mode is
 363                    only available in compressed form
 364                 */
 365                 PWC_DEBUG_SIZE("Choosing VGA/5 BAYER mode.\n");
 366                 pChoose = &RawEntry;
 367         }
 368         else
 369         {
 370                 /* Find a supported framerate with progressively higher compression ratios
 371                    if the preferred ratio is not available.
 372                    Skip this step when using RAW modes.
 373                 */
 374                 snapshot = 0;
 375                 while (compression <= 3) {
 376                         pChoose = &Kiara_table[size][fps][compression];
 377                         if (pChoose->alternate != 0)
 378                                 break;
 379                         compression++;
 380                 }
 381         }
 382         if (pChoose == NULL || pChoose->alternate == 0)
 383                 return -ENOENT; /* Not supported. */
 384
 385         PWC_TRACE("Using alternate setting %d.\n", pChoose->alternate);
 386
 387         /* usb_control_msg won't take staticly allocated arrays as argument?? */
 388         memcpy(buf, pChoose->mode, 12);
 389         if (snapshot)
 390                 buf[0] |= 0x80;
 391
 392         /* Firmware bug: video endpoint is 5, but commands are sent to endpoint 4 */
 393         ret = send_video_command(pdev, 4 /* pdev->vendpoint */, buf, 12);
 394         if (ret < 0)
 395                 return ret;
 396
 397         if (pChoose->bandlength > 0 && pdev->vpalette != VIDEO_PALETTE_RAW)
 398                 pwc_dec23_init(pdev, pdev->type, buf);
 399
 400         pdev->cmd_len = 12;
 401         memcpy(pdev->cmd_buf, buf, 12);
 402         /* All set and go */
 403         pdev->vframes = frames;
 404         pdev->vsize = size;
 405         pdev->vsnapshot = snapshot;
 406         pdev->valternate = pChoose->alternate;
 407         pdev->image = pwc_image_sizes[size];
 408         pdev->vbandlength = pChoose->bandlength;
 409         if (pdev->vbandlength > 0)
 410                 pdev->frame_size = (pdev->vbandlength * pdev->image.y) / 4;
 411         else
 412                 pdev->frame_size = (pdev->image.x * pdev->image.y * 12) / 8;
 413         PWC_TRACE("frame_size=%d, vframes=%d, vsize=%d, vsnapshot=%d, vbandlength=%d\n",
 414             pdev->frame_size,pdev->vframes,pdev->vsize,pdev->vsnapshot,pdev->vbandlength);
 415         return 0;
 416 }
 417
 418
 419
 420 /**
 421    @pdev: device structure
 422    @width: viewport width
 423    @height: viewport height
 424    @frame: framerate, in fps
 425    @compression: preferred compression ratio
 426    @snapshot: snapshot mode or streaming
 427  */
 428 int pwc_set_video_mode(struct pwc_device *pdev, int width, int height, int frames, int compression, int snapshot)
 429 {
 430         int ret, size;
 431
 432         PWC_DEBUG_FLOW("set_video_mode(%dx%d @ %d, palette %d).\n", width, height, frames, pdev->vpalette);
 433         size = pwc_decode_size(pdev, width, height);
 434         if (size < 0) {
 435                 PWC_DEBUG_MODULE("Could not find suitable size.\n");
 436                 return -ERANGE;
 437         }
 438         PWC_TRACE("decode_size = %d.\n", size);
 439
 440         if (DEVICE_USE_CODEC1(pdev->type)) {
 441                 ret = set_video_mode_Nala(pdev, size, frames);
 442
 443         } else if (DEVICE_USE_CODEC3(pdev->type)) {
 444                 ret = set_video_mode_Kiara(pdev, size, frames, compression, snapshot);
 445
 446         } else {
 447                 ret = set_video_mode_Timon(pdev, size, frames, compression, snapshot);
 448         }
 449         if (ret < 0) {
 450                 PWC_ERROR("Failed to set video mode %s@%d fps; return code = %d\n", size2name[size], frames, ret);
 451                 return ret;
 452         }
 453         pdev->view.x = width;
 454         pdev->view.y = height;
 455         pdev->frame_total_size = pdev->frame_size + pdev->frame_header_size + pdev->frame_trailer_size;
 456         pwc_set_image_buffer_size(pdev);
 457         PWC_DEBUG_SIZE("Set viewport to %dx%d, image size is %dx%d.\n", width, height, pwc_image_sizes[size].x, pwc_image_sizes[size].y);
 458         return 0;
 459 }
 460
 461 static unsigned int pwc_get_fps_Nala(struct pwc_device *pdev, unsigned int index, unsigned int size)
 462 {
 463         unsigned int i;
 464
 465         for (i = 0; i < PWC_FPS_MAX_NALA; i++) {
 466                 if (Nala_table[size][i].alternate) {
 467                         if (index--==0) return Nala_fps_vector[i];
 468                 }
 469         }
 470         return 0;
 471 }
 472
 473 static unsigned int pwc_get_fps_Kiara(struct pwc_device *pdev, unsigned int index, unsigned int size)
 474 {
 475         unsigned int i;
 476
 477         for (i = 0; i < PWC_FPS_MAX_KIARA; i++) {
 478                 if (Kiara_table[size][i][3].alternate) {
 479                         if (index--==0) return Kiara_fps_vector[i];
 480                 }
 481         }
 482         return 0;
 483 }
 484
 485 static unsigned int pwc_get_fps_Timon(struct pwc_device *pdev, unsigned int index, unsigned int size)
 486 {
 487         unsigned int i;
 488
 489         for (i=0; i < PWC_FPS_MAX_TIMON; i++) {
 490                 if (Timon_table[size][i][3].alternate) {
 491                         if (index--==0) return Timon_fps_vector[i];
 492                 }
 493         }
 494         return 0;
 495 }
 496
 497 unsigned int pwc_get_fps(struct pwc_device *pdev, unsigned int index, unsigned int size)
 498 {
 499         unsigned int ret;
 500
 501         if (DEVICE_USE_CODEC1(pdev->type)) {
 502                 ret = pwc_get_fps_Nala(pdev, index, size);
 503
 504         } else if (DEVICE_USE_CODEC3(pdev->type)) {
 505                 ret = pwc_get_fps_Kiara(pdev, index, size);
 506
 507         } else {
 508                 ret = pwc_get_fps_Timon(pdev, index, size);
 509         }
 510
 511         return ret;
 512 }
 513
 514 #define BLACK_Y 0
 515 #define BLACK_U 128
 516 #define BLACK_V 128
 517
 518 static void pwc_set_image_buffer_size(struct pwc_device *pdev)
 519 {
 520         int i, factor = 0;
 521
 522         /* for PALETTE_YUV420P */
 523         switch(pdev->vpalette)
 524         {
 525         case VIDEO_PALETTE_YUV420P:
 526                 factor = 6;
 527                 break;
 528         case VIDEO_PALETTE_RAW:
 529                 factor = 6; /* can be uncompressed YUV420P */
 530                 break;
 531         }
 532
 533         /* Set sizes in bytes */
 534         pdev->image.size = pdev->image.x * pdev->image.y * factor / 4;
 535         pdev->view.size  = pdev->view.x  * pdev->view.y  * factor / 4;
 536
 537         /* Align offset, or you'll get some very weird results in
 538            YUV420 mode... x must be multiple of 4 (to get the Y's in
 539            place), and y even (or you'll mixup U & V). This is less of a
 540            problem for YUV420P.
 541          */
 542         pdev->offset.x = ((pdev->view.x - pdev->image.x) / 2) & 0xFFFC;
 543         pdev->offset.y = ((pdev->view.y - pdev->image.y) / 2) & 0xFFFE;
 544
 545         /* Fill buffers with black colors */
 546         for (i = 0; i < pwc_mbufs; i++) {
 547                 unsigned char *p = pdev->image_data + pdev->images[i].offset;
 548                 memset(p, BLACK_Y, pdev->view.x * pdev->view.y);
 549                 p += pdev->view.x * pdev->view.y;
 550                 memset(p, BLACK_U, pdev->view.x * pdev->view.y/4);
 551                 p += pdev->view.x * pdev->view.y/4;
 552                 memset(p, BLACK_V, pdev->view.x * pdev->view.y/4);
 553         }
 554 }
 555
 556
 557
 558 /* BRIGHTNESS */
 559
 560 int pwc_get_brightness(struct pwc_device *pdev)
 561 {
 562         char buf;
 563         int ret;
 564
 565         ret = recv_control_msg(pdev,
 566                 GET_LUM_CTL, BRIGHTNESS_FORMATTER, &buf, sizeof(buf));
 567         if (ret < 0)
 568                 return ret;
 569         return buf;
 570 }
 571
 572 int pwc_set_brightness(struct pwc_device *pdev, int value)
 573 {
 574         char buf;
 575
 576         if (value < 0)
 577                 value = 0;
 578         if (value > 0xffff)
 579                 value = 0xffff;
 580         buf = (value >> 9) & 0x7f;
 581         return send_control_msg(pdev,
 582                 SET_LUM_CTL, BRIGHTNESS_FORMATTER, &buf, sizeof(buf));
 583 }
 584
 585 /* CONTRAST */
 586
 587 int pwc_get_contrast(struct pwc_device *pdev)
 588 {
 589         char buf;
 590         int ret;
 591
 592         ret = recv_control_msg(pdev,
 593                 GET_LUM_CTL, CONTRAST_FORMATTER, &buf, sizeof(buf));
 594         if (ret < 0)
 595                 return ret;
 596         return buf;
 597 }
 598
 599 int pwc_set_contrast(struct pwc_device *pdev, int value)
 600 {
 601         char buf;
 602
 603         if (value < 0)
 604                 value = 0;
 605         if (value > 0xffff)
 606                 value = 0xffff;
 607         buf = (value >> 10) & 0x3f;
 608         return send_control_msg(pdev,
 609                 SET_LUM_CTL, CONTRAST_FORMATTER, &buf, sizeof(buf));
 610 }
 611
 612 /* GAMMA */
 613
 614 int pwc_get_gamma(struct pwc_device *pdev)
 615 {
 616         char buf;
 617         int ret;
 618
 619         ret = recv_control_msg(pdev,
 620                 GET_LUM_CTL, GAMMA_FORMATTER, &buf, sizeof(buf));
 621         if (ret < 0)
 622                 return ret;
 623         return buf;
 624 }
 625
 626 int pwc_set_gamma(struct pwc_device *pdev, int value)
 627 {
 628         char buf;
 629
 630         if (value < 0)
 631                 value = 0;
 632         if (value > 0xffff)
 633                 value = 0xffff;
 634         buf = (value >> 11) & 0x1f;
 635         return send_control_msg(pdev,
 636                 SET_LUM_CTL, GAMMA_FORMATTER, &buf, sizeof(buf));
 637 }
 638
 639
 640 /* SATURATION */
 641
 642 /* return a value between [-100 , 100] */
 643 int pwc_get_saturation(struct pwc_device *pdev, int *value)
 644 {
 645         char buf;
 646         int ret, saturation_register;
 647
 648         if (pdev->type < 675)
 649                 return -EINVAL;
 650         if (pdev->type < 730)
 651                 saturation_register = SATURATION_MODE_FORMATTER2;
 652         else
 653                 saturation_register = SATURATION_MODE_FORMATTER1;
 654         ret = recv_control_msg(pdev,
 655                 GET_CHROM_CTL, saturation_register, &buf, sizeof(buf));
 656         if (ret < 0)
 657                 return ret;
 658         *value = (signed)buf;
 659         return 0;
 660 }
 661
 662 /* @param value saturation color between [-100 , 100] */
 663 int pwc_set_saturation(struct pwc_device *pdev, int value)
 664 {
 665         char buf;
 666         int saturation_register;
 667
 668         if (pdev->type < 675)
 669                 return -EINVAL;
 670         if (value < -100)
 671                 value = -100;
 672         if (value > 100)
 673                 value = 100;
 674         if (pdev->type < 730)
 675                 saturation_register = SATURATION_MODE_FORMATTER2;
 676         else
 677                 saturation_register = SATURATION_MODE_FORMATTER1;
 678         return send_control_msg(pdev,
 679                 SET_CHROM_CTL, saturation_register, &buf, sizeof(buf));
 680 }
 681
 682 /* AGC */
 683
 684 int pwc_set_agc(struct pwc_device *pdev, int mode, int value)
 685 {
 686         char buf;
 687         int ret;
 688
 689         if (mode)
 690                 buf = 0x0; /* auto */
 691         else
 692                 buf = 0xff; /* fixed */
 693
 694         ret = send_control_msg(pdev,
 695                 SET_LUM_CTL, AGC_MODE_FORMATTER, &buf, sizeof(buf));
 696
 697         if (!mode && ret >= 0) {
 698                 if (value < 0)
 699                         value = 0;
 700                 if (value > 0xffff)
 701                         value = 0xffff;
 702                 buf = (value >> 10) & 0x3F;
 703                 ret = send_control_msg(pdev,
 704                         SET_LUM_CTL, PRESET_AGC_FORMATTER, &buf, sizeof(buf));
 705         }
 706         if (ret < 0)
 707                 return ret;
 708         return 0;
 709 }
 710
 711 int pwc_get_agc(struct pwc_device *pdev, int *value)
 712 {
 713         unsigned char buf;
 714         int ret;
 715
 716         ret = recv_control_msg(pdev,
 717                 GET_LUM_CTL, AGC_MODE_FORMATTER, &buf, sizeof(buf));
 718         if (ret < 0)
 719                 return ret;
 720
 721         if (buf != 0) { /* fixed */
 722                 ret = recv_control_msg(pdev,
 723                         GET_LUM_CTL, PRESET_AGC_FORMATTER, &buf, sizeof(buf));
 724                 if (ret < 0)
 725                         return ret;
 726                 if (buf > 0x3F)
 727                         buf = 0x3F;
 728                 *value = (buf << 10);
 729         }
 730         else { /* auto */
 731                 ret = recv_control_msg(pdev,
 732                         GET_STATUS_CTL, READ_AGC_FORMATTER, &buf, sizeof(buf));
 733                 if (ret < 0)
 734                         return ret;
 735                 /* Gah... this value ranges from 0x00 ... 0x9F */
 736                 if (buf > 0x9F)
 737                         buf = 0x9F;
 738                 *value = -(48 + buf * 409);
 739         }
 740
 741         return 0;
 742 }
 743
 744 int pwc_set_shutter_speed(struct pwc_device *pdev, int mode, int value)
 745 {
 746         char buf[2];
 747         int speed, ret;
 748
 749
 750         if (mode)
 751                 buf[0] = 0x0;   /* auto */
 752         else
 753                 buf[0] = 0xff; /* fixed */
 754
 755         ret = send_control_msg(pdev,
 756                 SET_LUM_CTL, SHUTTER_MODE_FORMATTER, &buf, sizeof(buf));
 757
 758         if (!mode && ret >= 0) {
 759                 if (value < 0)
 760                         value = 0;
 761                 if (value > 0xffff)
 762                         value = 0xffff;
 763
 764                 if (DEVICE_USE_CODEC2(pdev->type)) {
 765                         /* speed ranges from 0x0 to 0x290 (656) */
 766                         speed = (value / 100);
 767                         buf[1] = speed >> 8;
 768                         buf[0] = speed & 0xff;
 769                 } else if (DEVICE_USE_CODEC3(pdev->type)) {
 770                         /* speed seems to range from 0x0 to 0xff */
 771                         buf[1] = 0;
 772                         buf[0] = value >> 8;
 773                 }
 774
 775                 ret = send_control_msg(pdev,
 776                         SET_LUM_CTL, PRESET_SHUTTER_FORMATTER,
 777                         &buf, sizeof(buf));
 778         }
 779         return ret;
 780 }
 781
 782 /* This function is not exported to v4l1, so output values between 0 -> 256 */
 783 int pwc_get_shutter_speed(struct pwc_device *pdev, int *value)
 784 {
 785         unsigned char buf[2];
 786         int ret;
 787
 788         ret = recv_control_msg(pdev,
 789                 GET_STATUS_CTL, READ_SHUTTER_FORMATTER, &buf, sizeof(buf));
 790         if (ret < 0)
 791                 return ret;
 792         *value = buf[0] + (buf[1] << 8);
 793         if (DEVICE_USE_CODEC2(pdev->type)) {
 794                 /* speed ranges from 0x0 to 0x290 (656) */
 795                 *value *= 256/656;
 796         } else if (DEVICE_USE_CODEC3(pdev->type)) {
 797                 /* speed seems to range from 0x0 to 0xff */
 798         }
 799         return 0;
 800 }
 801
 802
 803 /* POWER */
 804
 805 int pwc_camera_power(struct pwc_device *pdev, int power)
 806 {
 807         char buf;
 808
 809         if (pdev->type < 675 || (pdev->type < 730 && pdev->release < 6))
 810                 return 0;       /* Not supported by Nala or Timon < release 6 */
 811
 812         if (power)
 813                 buf = 0x00; /* active */
 814         else
 815                 buf = 0xFF; /* power save */
 816         return send_control_msg(pdev,
 817                 SET_STATUS_CTL, SET_POWER_SAVE_MODE_FORMATTER,
 818                 &buf, sizeof(buf));
 819 }
 820
 821
 822
 823 /* private calls */
 824
 825 int pwc_restore_user(struct pwc_device *pdev)
 826 {
 827         return send_control_msg(pdev,
 828                 SET_STATUS_CTL, RESTORE_USER_DEFAULTS_FORMATTER, NULL, 0);
 829 }
 830
 831 int pwc_save_user(struct pwc_device *pdev)
 832 {
 833         return send_control_msg(pdev,
 834                 SET_STATUS_CTL, SAVE_USER_DEFAULTS_FORMATTER, NULL, 0);
 835 }
 836
 837 int pwc_restore_factory(struct pwc_device *pdev)
 838 {
 839         return send_control_msg(pdev,
 840                 SET_STATUS_CTL, RESTORE_FACTORY_DEFAULTS_FORMATTER, NULL, 0);
 841 }
 842
 843  /* ************************************************* */
 844  /* Patch by Alvarado: (not in the original version   */
 845
 846  /*
 847   * the camera recognizes modes from 0 to 4:
 848   *
 849   * 00: indoor (incandescant lighting)
 850   * 01: outdoor (sunlight)
 851   * 02: fluorescent lighting
 852   * 03: manual
 853   * 04: auto
 854   */
 855 int pwc_set_awb(struct pwc_device *pdev, int mode)
 856 {
 857         char buf;
 858         int ret;
 859
 860         if (mode < 0)
 861             mode = 0;
 862
 863         if (mode > 4)
 864             mode = 4;
 865
 866         buf = mode & 0x07; /* just the lowest three bits */
 867
 868         ret = send_control_msg(pdev,
 869                 SET_CHROM_CTL, WB_MODE_FORMATTER, &buf, sizeof(buf));
 870
 871         if (ret < 0)
 872                 return ret;
 873         return 0;
 874 }
 875
 876 int pwc_get_awb(struct pwc_device *pdev)
 877 {
 878         unsigned char buf;
 879         int ret;
 880
 881         ret = recv_control_msg(pdev,
 882                 GET_CHROM_CTL, WB_MODE_FORMATTER, &buf, sizeof(buf));
 883
 884         if (ret < 0)
 885                 return ret;
 886         return buf;
 887 }
 888
 889 int pwc_set_red_gain(struct pwc_device *pdev, int value)
 890 {
 891         unsigned char buf;
 892
 893         if (value < 0)
 894                 value = 0;
 895         if (value > 0xffff)
 896                 value = 0xffff;
 897         /* only the msb is considered */
 898         buf = value >> 8;
 899         return send_control_msg(pdev,
 900                 SET_CHROM_CTL, PRESET_MANUAL_RED_GAIN_FORMATTER,
 901                 &buf, sizeof(buf));
 902 }
 903
 904 int pwc_get_red_gain(struct pwc_device *pdev, int *value)
 905 {
 906         unsigned char buf;
 907         int ret;
 908
 909         ret = recv_control_msg(pdev,
 910                 GET_CHROM_CTL, PRESET_MANUAL_RED_GAIN_FORMATTER,
 911                 &buf, sizeof(buf));
 912         if (ret < 0)
 913             return ret;
 914         *value = buf << 8;
 915         return 0;
 916 }
 917
 918
 919 int pwc_set_blue_gain(struct pwc_device *pdev, int value)
 920 {
 921         unsigned char buf;
 922
 923         if (value < 0)
 924                 value = 0;
 925         if (value > 0xffff)
 926                 value = 0xffff;
 927         /* only the msb is considered */
 928         buf = value >> 8;
 929         return send_control_msg(pdev,
 930                 SET_CHROM_CTL, PRESET_MANUAL_BLUE_GAIN_FORMATTER,
 931                 &buf, sizeof(buf));
 932 }
 933
 934 int pwc_get_blue_gain(struct pwc_device *pdev, int *value)
 935 {
 936         unsigned char buf;
 937         int ret;
 938
 939         ret = recv_control_msg(pdev,
 940                 GET_CHROM_CTL, PRESET_MANUAL_BLUE_GAIN_FORMATTER,
 941                 &buf, sizeof(buf));
 942         if (ret < 0)
 943             return ret;
 944         *value = buf << 8;
 945         return 0;
 946 }
 947
 948
 949 /* The following two functions are different, since they only read the
 950    internal red/blue gains, which may be different from the manual
 951    gains set or read above.
 952  */
 953 static int pwc_read_red_gain(struct pwc_device *pdev, int *value)
 954 {
 955         unsigned char buf;
 956         int ret;
 957
 958         ret = recv_control_msg(pdev,
 959                 GET_STATUS_CTL, READ_RED_GAIN_FORMATTER, &buf, sizeof(buf));
 960         if (ret < 0)
 961                 return ret;
 962         *value = buf << 8;
 963         return 0;
 964 }
 965
 966 static int pwc_read_blue_gain(struct pwc_device *pdev, int *value)
 967 {
 968         unsigned char buf;
 969         int ret;
 970
 971         ret = recv_control_msg(pdev,
 972                 GET_STATUS_CTL, READ_BLUE_GAIN_FORMATTER, &buf, sizeof(buf));
 973         if (ret < 0)
 974                 return ret;
 975         *value = buf << 8;
 976         return 0;
 977 }
 978
 979
 980 static int pwc_set_wb_speed(struct pwc_device *pdev, int speed)
 981 {
 982         unsigned char buf;
 983
 984         /* useful range is 0x01..0x20 */
 985         buf = speed / 0x7f0;
 986         return send_control_msg(pdev,
 987                 SET_CHROM_CTL, AWB_CONTROL_SPEED_FORMATTER, &buf, sizeof(buf));
 988 }
 989
 990 static int pwc_get_wb_speed(struct pwc_device *pdev, int *value)
 991 {
 992         unsigned char buf;
 993         int ret;
 994
 995         ret = recv_control_msg(pdev,
 996                 GET_CHROM_CTL, AWB_CONTROL_SPEED_FORMATTER, &buf, sizeof(buf));
 997         if (ret < 0)
 998                 return ret;
 999         *value = buf * 0x7f0;
1000         return 0;
1001 }
1002
1003
1004 static int pwc_set_wb_delay(struct pwc_device *pdev, int delay)
1005 {
1006         unsigned char buf;
1007
1008         /* useful range is 0x01..0x3F */
1009         buf = (delay >> 10);
1010         return send_control_msg(pdev,
1011                 SET_CHROM_CTL, AWB_CONTROL_DELAY_FORMATTER, &buf, sizeof(buf));
1012 }
1013
1014 static int pwc_get_wb_delay(struct pwc_device *pdev, int *value)
1015 {
1016         unsigned char buf;
1017         int ret;
1018
1019         ret = recv_control_msg(pdev,
1020                 GET_CHROM_CTL, AWB_CONTROL_DELAY_FORMATTER, &buf, sizeof(buf));
1021         if (ret < 0)
1022                 return ret;
1023         *value = buf << 10;
1024         return 0;
1025 }
1026
1027
1028 int pwc_set_leds(struct pwc_device *pdev, int on_value, int off_value)
1029 {
1030         unsigned char buf[2];
1031
1032         if (pdev->type < 730)
1033                 return 0;
1034         on_value /= 100;
1035         off_value /= 100;
1036         if (on_value < 0)
1037                 on_value = 0;
1038         if (on_value > 0xff)
1039                 on_value = 0xff;
1040         if (off_value < 0)
1041                 off_value = 0;
1042         if (off_value > 0xff)
1043                 off_value = 0xff;
1044
1045         buf[0] = on_value;
1046         buf[1] = off_value;
1047
1048         return send_control_msg(pdev,
1049                 SET_STATUS_CTL, LED_FORMATTER, &buf, sizeof(buf));
1050 }
1051
1052 static int pwc_get_leds(struct pwc_device *pdev, int *on_value, int *off_value)
1053 {
1054         unsigned char buf[2];
1055         int ret;
1056
1057         if (pdev->type < 730) {
1058                 *on_value = -1;
1059                 *off_value = -1;
1060                 return 0;
1061         }
1062
1063         ret = recv_control_msg(pdev,
1064                 GET_STATUS_CTL, LED_FORMATTER, &buf, sizeof(buf));
1065         if (ret < 0)
1066                 return ret;
1067         *on_value = buf[0] * 100;
1068         *off_value = buf[1] * 100;
1069         return 0;
1070 }
1071
1072 int pwc_set_contour(struct pwc_device *pdev, int contour)
1073 {
1074         unsigned char buf;
1075         int ret;
1076
1077         if (contour < 0)
1078                 buf = 0xff; /* auto contour on */
1079         else
1080                 buf = 0x0; /* auto contour off */
1081         ret = send_control_msg(pdev,
1082                 SET_LUM_CTL, AUTO_CONTOUR_FORMATTER, &buf, sizeof(buf));
1083         if (ret < 0)
1084                 return ret;
1085
1086         if (contour < 0)
1087                 return 0;
1088         if (contour > 0xffff)
1089                 contour = 0xffff;
1090
1091         buf = (contour >> 10); /* contour preset is [0..3f] */
1092         ret = send_control_msg(pdev,
1093                 SET_LUM_CTL, PRESET_CONTOUR_FORMATTER, &buf, sizeof(buf));
1094         if (ret < 0)
1095                 return ret;
1096         return 0;
1097 }
1098
1099 int pwc_get_contour(struct pwc_device *pdev, int *contour)
1100 {
1101         unsigned char buf;
1102         int ret;
1103
1104         ret = recv_control_msg(pdev,
1105                 GET_LUM_CTL, AUTO_CONTOUR_FORMATTER, &buf, sizeof(buf));
1106         if (ret < 0)
1107                 return ret;
1108
1109         if (buf == 0) {
1110                 /* auto mode off, query current preset value */
1111                 ret = recv_control_msg(pdev,
1112                         GET_LUM_CTL, PRESET_CONTOUR_FORMATTER,
1113                         &buf, sizeof(buf));
1114                 if (ret < 0)
1115                         return ret;
1116                 *contour = buf << 10;
1117         }
1118         else
1119                 *contour = -1;
1120         return 0;
1121 }
1122
1123
1124 int pwc_set_backlight(struct pwc_device *pdev, int backlight)
1125 {
1126         unsigned char buf;
1127
1128         if (backlight)
1129                 buf = 0xff;
1130         else
1131                 buf = 0x0;
1132         return send_control_msg(pdev,
1133                 SET_LUM_CTL, BACK_LIGHT_COMPENSATION_FORMATTER,
1134                 &buf, sizeof(buf));
1135 }
1136
1137 int pwc_get_backlight(struct pwc_device *pdev, int *backlight)
1138 {
1139         int ret;
1140         unsigned char buf;
1141
1142         ret = recv_control_msg(pdev,
1143                 GET_LUM_CTL, BACK_LIGHT_COMPENSATION_FORMATTER,
1144                 &buf, sizeof(buf));
1145         if (ret < 0)
1146                 return ret;
1147         *backlight = !!buf;
1148         return 0;
1149 }
1150
1151 int pwc_set_colour_mode(struct pwc_device *pdev, int colour)
1152 {
1153         unsigned char buf;
1154
1155         if (colour)
1156                 buf = 0xff;
1157         else
1158                 buf = 0x0;
1159         return send_control_msg(pdev,
1160                 SET_CHROM_CTL, COLOUR_MODE_FORMATTER, &buf, sizeof(buf));
1161 }
1162
1163 int pwc_get_colour_mode(struct pwc_device *pdev, int *colour)
1164 {
1165         int ret;
1166         unsigned char buf;
1167
1168         ret = recv_control_msg(pdev,
1169                 GET_CHROM_CTL, COLOUR_MODE_FORMATTER, &buf, sizeof(buf));
1170         if (ret < 0)
1171                 return ret;
1172         *colour = !!buf;
1173         return 0;
1174 }
1175
1176
1177 int pwc_set_flicker(struct pwc_device *pdev, int flicker)
1178 {
1179         unsigned char buf;
1180
1181         if (flicker)
1182                 buf = 0xff;
1183         else
1184                 buf = 0x0;
1185         return send_control_msg(pdev,
1186                 SET_LUM_CTL, FLICKERLESS_MODE_FORMATTER, &buf, sizeof(buf));
1187 }
1188
1189 int pwc_get_flicker(struct pwc_device *pdev, int *flicker)
1190 {
1191         int ret;
1192         unsigned char buf;
1193
1194         ret = recv_control_msg(pdev,
1195                 GET_LUM_CTL, FLICKERLESS_MODE_FORMATTER, &buf, sizeof(buf));
1196         if (ret < 0)
1197                 return ret;
1198         *flicker = !!buf;
1199         return 0;
1200 }
1201
1202 int pwc_set_dynamic_noise(struct pwc_device *pdev, int noise)
1203 {
1204         unsigned char buf;
1205
1206         if (noise < 0)
1207                 noise = 0;
1208         if (noise > 3)
1209                 noise = 3;
1210         buf = noise;
1211         return send_control_msg(pdev,
1212                 SET_LUM_CTL, DYNAMIC_NOISE_CONTROL_FORMATTER,
1213                 &buf, sizeof(buf));
1214 }
1215
1216 int pwc_get_dynamic_noise(struct pwc_device *pdev, int *noise)
1217 {
1218         int ret;
1219         unsigned char buf;
1220
1221         ret = recv_control_msg(pdev,
1222                 GET_LUM_CTL, DYNAMIC_NOISE_CONTROL_FORMATTER,
1223                 &buf, sizeof(buf));
1224         if (ret < 0)
1225                 return ret;
1226         *noise = buf;
1227         return 0;
1228 }
1229
1230 static int _pwc_mpt_reset(struct pwc_device *pdev, int flags)
1231 {
1232         unsigned char buf;
1233
1234         buf = flags & 0x03; // only lower two bits are currently used
1235         return send_control_msg(pdev,
1236                 SET_MPT_CTL, PT_RESET_CONTROL_FORMATTER, &buf, sizeof(buf));
1237 }
1238
1239 int pwc_mpt_reset(struct pwc_device *pdev, int flags)
1240 {
1241         int ret;
1242         ret = _pwc_mpt_reset(pdev, flags);
1243         if (ret >= 0) {
1244                 pdev->pan_angle = 0;
1245                 pdev->tilt_angle = 0;
1246         }
1247         return ret;
1248 }
1249
1250 static int _pwc_mpt_set_angle(struct pwc_device *pdev, int pan, int tilt)
1251 {
1252         unsigned char buf[4];
1253
1254         /* set new relative angle; angles are expressed in degrees * 100,
1255            but cam as .5 degree resolution, hence divide by 200. Also
1256            the angle must be multiplied by 64 before it's send to
1257            the cam (??)
1258          */
1259         pan  =  64 * pan  / 100;
1260         tilt = -64 * tilt / 100; /* positive tilt is down, which is not what the user would expect */
1261         buf[0] = pan & 0xFF;
1262         buf[1] = (pan >> 8) & 0xFF;
1263         buf[2] = tilt & 0xFF;
1264         buf[3] = (tilt >> 8) & 0xFF;
1265         return send_control_msg(pdev,
1266                 SET_MPT_CTL, PT_RELATIVE_CONTROL_FORMATTER, &buf, sizeof(buf));
1267 }
1268
1269 int pwc_mpt_set_angle(struct pwc_device *pdev, int pan, int tilt)
1270 {
1271         int ret;
1272
1273         /* check absolute ranges */
1274         if (pan  < pdev->angle_range.pan_min  ||
1275             pan  > pdev->angle_range.pan_max  ||
1276             tilt < pdev->angle_range.tilt_min ||
1277             tilt > pdev->angle_range.tilt_max)
1278                 return -ERANGE;
1279
1280         /* go to relative range, check again */
1281         pan  -= pdev->pan_angle;
1282         tilt -= pdev->tilt_angle;
1283         /* angles are specified in degrees * 100, thus the limit = 36000 */
1284         if (pan < -36000 || pan > 36000 || tilt < -36000 || tilt > 36000)
1285                 return -ERANGE;
1286
1287         ret = _pwc_mpt_set_angle(pdev, pan, tilt);
1288         if (ret >= 0) {
1289                 pdev->pan_angle  += pan;
1290                 pdev->tilt_angle += tilt;
1291         }
1292         if (ret == -EPIPE) /* stall -> out of range */
1293                 ret = -ERANGE;
1294         return ret;
1295 }
1296
1297 static int pwc_mpt_get_status(struct pwc_device *pdev, struct pwc_mpt_status *status)
1298 {
1299         int ret;
1300         unsigned char buf[5];
1301
1302         ret = recv_control_msg(pdev,
1303                 GET_MPT_CTL, PT_STATUS_FORMATTER, &buf, sizeof(buf));
1304         if (ret < 0)
1305                 return ret;
1306         status->status = buf[0] & 0x7; // 3 bits are used for reporting
1307         status->time_pan = (buf[1] << 8) + buf[2];
1308         status->time_tilt = (buf[3] << 8) + buf[4];
1309         return 0;
1310 }
1311
1312
1313 int pwc_get_cmos_sensor(struct pwc_device *pdev, int *sensor)
1314 {
1315         unsigned char buf;
1316         int ret = -1, request;
1317
1318         if (pdev->type < 675)
1319                 request = SENSOR_TYPE_FORMATTER1;
1320         else if (pdev->type < 730)
1321                 return -1; /* The Vesta series doesn't have this call */
1322         else
1323                 request = SENSOR_TYPE_FORMATTER2;
1324
1325         ret = recv_control_msg(pdev,
1326                 GET_STATUS_CTL, request, &buf, sizeof(buf));
1327         if (ret < 0)
1328                 return ret;
1329         if (pdev->type < 675)
1330                 *sensor = buf | 0x100;
1331         else
1332                 *sensor = buf;
1333         return 0;
1334 }
1335
1336
1337  /* End of Add-Ons                                    */
1338  /* ************************************************* */
1339
1340 /* Linux 2.5.something and 2.6 pass direct pointers to arguments of
1341    ioctl() calls. With 2.4, you have to do tedious copy_from_user()
1342    and copy_to_user() calls. With these macros we circumvent this,
1343    and let me maintain only one source file. The functionality is
1344    exactly the same otherwise.
1345  */
1346
1347 /* define local variable for arg */
1348 #define ARG_DEF(ARG_type, ARG_name)\
1349         ARG_type *ARG_name = arg;
1350 /* copy arg to local variable */
1351 #define ARG_IN(ARG_name) /* nothing */
1352 /* argument itself (referenced) */
1353 #define ARGR(ARG_name) (*ARG_name)
1354 /* argument address */
1355 #define ARGA(ARG_name) ARG_name
1356 /* copy local variable to arg */
1357 #define ARG_OUT(ARG_name) /* nothing */
1358
1359 long pwc_ioctl(struct pwc_device *pdev, unsigned int cmd, void *arg)
1360 {
1361         long ret = 0;
1362
1363         switch(cmd) {
1364         case VIDIOCPWCRUSER:
1365         {
1366                 if (pwc_restore_user(pdev))
1367                         ret = -EINVAL;
1368                 break;
1369         }
1370
1371         case VIDIOCPWCSUSER:
1372         {
1373                 if (pwc_save_user(pdev))
1374                         ret = -EINVAL;
1375                 break;
1376         }
1377
1378         case VIDIOCPWCFACTORY:
1379         {
1380                 if (pwc_restore_factory(pdev))
1381                         ret = -EINVAL;
1382                 break;
1383         }
1384
1385         case VIDIOCPWCSCQUAL:
1386         {
1387                 ARG_DEF(int, qual)
1388
1389                 ARG_IN(qual)
1390                 if (ARGR(qual) < 0 || ARGR(qual) > 3)
1391                         ret = -EINVAL;
1392                 else
1393                         ret = pwc_try_video_mode(pdev, pdev->view.x, pdev->view.y, pdev->vframes, ARGR(qual), pdev->vsnapshot);
1394                 if (ret >= 0)
1395                         pdev->vcompression = ARGR(qual);
1396                 break;
1397         }
1398
1399         case VIDIOCPWCGCQUAL:
1400         {
1401                 ARG_DEF(int, qual)
1402
1403                 ARGR(qual) = pdev->vcompression;
1404                 ARG_OUT(qual)
1405                 break;
1406         }
1407
1408         case VIDIOCPWCPROBE:
1409         {
1410                 ARG_DEF(struct pwc_probe, probe)
1411
1412                 strcpy(ARGR(probe).name, pdev->vdev->name);
1413                 ARGR(probe).type = pdev->type;
1414                 ARG_OUT(probe)
1415                 break;
1416         }
1417
1418         case VIDIOCPWCGSERIAL:
1419         {
1420                 ARG_DEF(struct pwc_serial, serial)
1421
1422                 strcpy(ARGR(serial).serial, pdev->serial);
1423                 ARG_OUT(serial)
1424                 break;
1425         }
1426
1427         case VIDIOCPWCSAGC:
1428         {
1429                 ARG_DEF(int, agc)
1430
1431                 ARG_IN(agc)
1432                 if (pwc_set_agc(pdev, ARGR(agc) < 0 ? 1 : 0, ARGR(agc)))
1433                         ret = -EINVAL;
1434                 break;
1435         }
1436
1437         case VIDIOCPWCGAGC:
1438         {
1439                 ARG_DEF(int, agc)
1440
1441                 if (pwc_get_agc(pdev, ARGA(agc)))
1442                         ret = -EINVAL;
1443                 ARG_OUT(agc)
1444                 break;
1445         }
1446
1447         case VIDIOCPWCSSHUTTER:
1448         {
1449                 ARG_DEF(int, shutter_speed)
1450
1451                 ARG_IN(shutter_speed)
1452                 ret = pwc_set_shutter_speed(pdev, ARGR(shutter_speed) < 0 ? 1 : 0, ARGR(shutter_speed));
1453                 break;
1454         }
1455
1456         case VIDIOCPWCSAWB:
1457         {
1458                 ARG_DEF(struct pwc_whitebalance, wb)
1459
1460                 ARG_IN(wb)
1461                 ret = pwc_set_awb(pdev, ARGR(wb).mode);
1462                 if (ret >= 0 && ARGR(wb).mode == PWC_WB_MANUAL) {
1463                         pwc_set_red_gain(pdev, ARGR(wb).manual_red);
1464                         pwc_set_blue_gain(pdev, ARGR(wb).manual_blue);
1465                 }
1466                 break;
1467         }
1468
1469         case VIDIOCPWCGAWB:
1470         {
1471                 ARG_DEF(struct pwc_whitebalance, wb)
1472
1473                 memset(ARGA(wb), 0, sizeof(struct pwc_whitebalance));
1474                 ARGR(wb).mode = pwc_get_awb(pdev);
1475                 if (ARGR(wb).mode < 0)
1476                         ret = -EINVAL;
1477                 else {
1478                         if (ARGR(wb).mode == PWC_WB_MANUAL) {
1479                                 ret = pwc_get_red_gain(pdev, &ARGR(wb).manual_red);
1480                                 if (ret < 0)
1481                                         break;
1482                                 ret = pwc_get_blue_gain(pdev, &ARGR(wb).manual_blue);
1483                                 if (ret < 0)
1484                                         break;
1485                         }
1486                         if (ARGR(wb).mode == PWC_WB_AUTO) {
1487                                 ret = pwc_read_red_gain(pdev, &ARGR(wb).read_red);
1488                                 if (ret < 0)
1489                                         break;
1490                                 ret = pwc_read_blue_gain(pdev, &ARGR(wb).read_blue);
1491                                 if (ret < 0)
1492                                         break;
1493                         }
1494                 }
1495                 ARG_OUT(wb)
1496                 break;
1497         }
1498
1499         case VIDIOCPWCSAWBSPEED:
1500         {
1501                 ARG_DEF(struct pwc_wb_speed, wbs)
1502
1503                 if (ARGR(wbs).control_speed > 0) {
1504                         ret = pwc_set_wb_speed(pdev, ARGR(wbs).control_speed);
1505                 }
1506                 if (ARGR(wbs).control_delay > 0) {
1507                         ret = pwc_set_wb_delay(pdev, ARGR(wbs).control_delay);
1508                 }
1509                 break;
1510         }
1511
1512         case VIDIOCPWCGAWBSPEED:
1513         {
1514                 ARG_DEF(struct pwc_wb_speed, wbs)
1515
1516                 ret = pwc_get_wb_speed(pdev, &ARGR(wbs).control_speed);
1517                 if (ret < 0)
1518                         break;
1519                 ret = pwc_get_wb_delay(pdev, &ARGR(wbs).control_delay);
1520                 if (ret < 0)
1521                         break;
1522                 ARG_OUT(wbs)
1523                 break;
1524         }
1525
1526         case VIDIOCPWCSLED:
1527         {
1528                 ARG_DEF(struct pwc_leds, leds)
1529
1530                 ARG_IN(leds)
1531                 ret = pwc_set_leds(pdev, ARGR(leds).led_on, ARGR(leds).led_off);
1532                 break;
1533         }
1534
1535
1536         case VIDIOCPWCGLED:
1537         {
1538                 ARG_DEF(struct pwc_leds, leds)
1539
1540                 ret = pwc_get_leds(pdev, &ARGR(leds).led_on, &ARGR(leds).led_off);
1541                 ARG_OUT(leds)
1542                 break;
1543         }
1544
1545         case VIDIOCPWCSCONTOUR:
1546         {
1547                 ARG_DEF(int, contour)
1548
1549                 ARG_IN(contour)
1550                 ret = pwc_set_contour(pdev, ARGR(contour));
1551                 break;
1552         }
1553
1554         case VIDIOCPWCGCONTOUR:
1555         {
1556                 ARG_DEF(int, contour)
1557
1558                 ret = pwc_get_contour(pdev, ARGA(contour));
1559                 ARG_OUT(contour)
1560                 break;
1561         }
1562
1563         case VIDIOCPWCSBACKLIGHT:
1564         {
1565                 ARG_DEF(int, backlight)
1566
1567                 ARG_IN(backlight)
1568                 ret = pwc_set_backlight(pdev, ARGR(backlight));
1569                 break;
1570         }
1571
1572         case VIDIOCPWCGBACKLIGHT:
1573         {
1574                 ARG_DEF(int, backlight)
1575
1576                 ret = pwc_get_backlight(pdev, ARGA(backlight));
1577                 ARG_OUT(backlight)
1578                 break;
1579         }
1580
1581         case VIDIOCPWCSFLICKER:
1582         {
1583                 ARG_DEF(int, flicker)
1584
1585                 ARG_IN(flicker)
1586                 ret = pwc_set_flicker(pdev, ARGR(flicker));
1587                 break;
1588         }
1589
1590         case VIDIOCPWCGFLICKER:
1591         {
1592                 ARG_DEF(int, flicker)
1593
1594                 ret = pwc_get_flicker(pdev, ARGA(flicker));
1595                 ARG_OUT(flicker)
1596                 break;
1597         }
1598
1599         case VIDIOCPWCSDYNNOISE:
1600         {
1601                 ARG_DEF(int, dynnoise)
1602
1603                 ARG_IN(dynnoise)
1604                 ret = pwc_set_dynamic_noise(pdev, ARGR(dynnoise));
1605                 break;
1606         }
1607
1608         case VIDIOCPWCGDYNNOISE:
1609         {
1610                 ARG_DEF(int, dynnoise)
1611
1612                 ret = pwc_get_dynamic_noise(pdev, ARGA(dynnoise));
1613                 ARG_OUT(dynnoise);
1614                 break;
1615         }
1616
1617         case VIDIOCPWCGREALSIZE:
1618         {
1619                 ARG_DEF(struct pwc_imagesize, size)
1620
1621                 ARGR(size).width = pdev->image.x;
1622                 ARGR(size).height = pdev->image.y;
1623                 ARG_OUT(size)
1624                 break;
1625         }
1626
1627         case VIDIOCPWCMPTRESET:
1628         {
1629                 if (pdev->features & FEATURE_MOTOR_PANTILT)
1630                 {
1631                         ARG_DEF(int, flags)
1632
1633                         ARG_IN(flags)
1634                         ret = pwc_mpt_reset(pdev, ARGR(flags));
1635                 }
1636                 else
1637                 {
1638                         ret = -ENXIO;
1639                 }
1640                 break;
1641         }
1642
1643         case VIDIOCPWCMPTGRANGE:
1644         {
1645                 if (pdev->features & FEATURE_MOTOR_PANTILT)
1646                 {
1647                         ARG_DEF(struct pwc_mpt_range, range)
1648
1649                         ARGR(range) = pdev->angle_range;
1650                         ARG_OUT(range)
1651                 }
1652                 else
1653                 {
1654                         ret = -ENXIO;
1655                 }
1656                 break;
1657         }
1658
1659         case VIDIOCPWCMPTSANGLE:
1660         {
1661                 int new_pan, new_tilt;
1662
1663                 if (pdev->features & FEATURE_MOTOR_PANTILT)
1664                 {
1665                         ARG_DEF(struct pwc_mpt_angles, angles)
1666
1667                         ARG_IN(angles)
1668                         /* The camera can only set relative angles, so
1669                            do some calculations when getting an absolute angle .
1670                          */
1671                         if (ARGR(angles).absolute)
1672                         {
1673                                 new_pan  = ARGR(angles).pan;
1674                                 new_tilt = ARGR(angles).tilt;
1675                         }
1676                         else
1677                         {
1678                                 new_pan  = pdev->pan_angle  + ARGR(angles).pan;
1679                                 new_tilt = pdev->tilt_angle + ARGR(angles).tilt;
1680                         }
1681                         ret = pwc_mpt_set_angle(pdev, new_pan, new_tilt);
1682                 }
1683                 else
1684                 {
1685                         ret = -ENXIO;
1686                 }
1687                 break;
1688         }
1689
1690         case VIDIOCPWCMPTGANGLE:
1691         {
1692
1693                 if (pdev->features & FEATURE_MOTOR_PANTILT)
1694                 {
1695                         ARG_DEF(struct pwc_mpt_angles, angles)
1696
1697                         ARGR(angles).absolute = 1;
1698                         ARGR(angles).pan  = pdev->pan_angle;
1699                         ARGR(angles).tilt = pdev->tilt_angle;
1700                         ARG_OUT(angles)
1701                 }
1702                 else
1703                 {
1704                         ret = -ENXIO;
1705                 }
1706                 break;
1707         }
1708
1709         case VIDIOCPWCMPTSTATUS:
1710         {
1711                 if (pdev->features & FEATURE_MOTOR_PANTILT)
1712                 {
1713                         ARG_DEF(struct pwc_mpt_status, status)
1714
1715                         ret = pwc_mpt_get_status(pdev, ARGA(status));
1716                         ARG_OUT(status)
1717                 }
1718                 else
1719                 {
1720                         ret = -ENXIO;
1721                 }
1722                 break;
1723         }
1724
1725         case VIDIOCPWCGVIDCMD:
1726         {
1727                 ARG_DEF(struct pwc_video_command, vcmd);
1728
1729                 ARGR(vcmd).type = pdev->type;
1730                 ARGR(vcmd).release = pdev->release;
1731                 ARGR(vcmd).command_len = pdev->cmd_len;
1732                 memcpy(&ARGR(vcmd).command_buf, pdev->cmd_buf, pdev->cmd_len);
1733                 ARGR(vcmd).bandlength = pdev->vbandlength;
1734                 ARGR(vcmd).frame_size = pdev->frame_size;
1735                 ARG_OUT(vcmd)
1736                 break;
1737         }
1738         /*
1739         case VIDIOCPWCGVIDTABLE:
1740         {
1741                 ARG_DEF(struct pwc_table_init_buffer, table);
1742                 ARGR(table).len = pdev->cmd_len;
1743                 memcpy(&ARGR(table).buffer, pdev->decompress_data, pdev->decompressor->table_size);
1744                 ARG_OUT(table)
1745                 break;
1746         }
1747         */
1748
1749         default:
1750                 ret = -ENOIOCTLCMD;
1751                 break;
1752         }
1753
1754         if (ret > 0)
1755                 return 0;
1756         return ret;
1757 }
1758
1759
1760 /* vim: set cinoptions= formatoptions=croql cindent shiftwidth=8 tabstop=8: */