drivers/media/video/gspca/stv06xx/stv06xx_st6422.c

   1 /*
   2  * Support for the sensor part which is integrated (I think) into the
   3  * st6422 stv06xx alike bridge, as its integrated there are no i2c writes
   4  * but instead direct bridge writes.
   5  *
   6  * Copyright (c) 2009 Hans de Goede <hdegoede@redhat.com>
   7  *
   8  * Strongly based on qc-usb-messenger, which is:
   9  * Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher
  10  *                    Mark Cave-Ayland, Carlo E Prelz, Dick Streefland
  11  * Copyright (c) 2002, 2003 Tuukka Toivonen
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 2 of the License, or
  16  * (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  26  *
  27  */
  28
  29 #include "stv06xx_st6422.h"
  30
  31 static struct v4l2_pix_format st6422_mode[] = {
  32         /* Note we actually get 124 lines of data, of which we skip the 4st
  33            4 as they are garbage */
  34         {
  35                 162,
  36                 120,
  37                 V4L2_PIX_FMT_SGRBG8,
  38                 V4L2_FIELD_NONE,
  39                 .sizeimage = 162 * 120,
  40                 .bytesperline = 162,
  41                 .colorspace = V4L2_COLORSPACE_SRGB,
  42                 .priv = 1
  43         },
  44         /* Note we actually get 248 lines of data, of which we skip the 4st
  45            4 as they are garbage, and we tell the app it only gets the
  46            first 240 of the 244 lines it actually gets, so that it ignores
  47            the last 4. */
  48         {
  49                 324,
  50                 240,
  51                 V4L2_PIX_FMT_SGRBG8,
  52                 V4L2_FIELD_NONE,
  53                 .sizeimage = 324 * 244,
  54                 .bytesperline = 324,
  55                 .colorspace = V4L2_COLORSPACE_SRGB,
  56                 .priv = 0
  57         },
  58 };
  59
  60 static const struct ctrl st6422_ctrl[] = {
  61 #define BRIGHTNESS_IDX 0
  62         {
  63                 {
  64                         .id             = V4L2_CID_BRIGHTNESS,
  65                         .type           = V4L2_CTRL_TYPE_INTEGER,
  66                         .name           = "Brightness",
  67                         .minimum        = 0,
  68                         .maximum        = 31,
  69                         .step           = 1,
  70                         .default_value  = 3
  71                 },
  72                 .set = st6422_set_brightness,
  73                 .get = st6422_get_brightness
  74         },
  75 #define CONTRAST_IDX 1
  76         {
  77                 {
  78                         .id             = V4L2_CID_CONTRAST,
  79                         .type           = V4L2_CTRL_TYPE_INTEGER,
  80                         .name           = "Contrast",
  81                         .minimum        = 0,
  82                         .maximum        = 15,
  83                         .step           = 1,
  84                         .default_value  = 11
  85                 },
  86                 .set = st6422_set_contrast,
  87                 .get = st6422_get_contrast
  88         },
  89 #define GAIN_IDX 2
  90         {
  91                 {
  92                         .id             = V4L2_CID_GAIN,
  93                         .type           = V4L2_CTRL_TYPE_INTEGER,
  94                         .name           = "Gain",
  95                         .minimum        = 0,
  96                         .maximum        = 255,
  97                         .step           = 1,
  98                         .default_value  = 64
  99                 },
 100                 .set = st6422_set_gain,
 101                 .get = st6422_get_gain
 102         },
 103 #define EXPOSURE_IDX 3
 104         {
 105                 {
 106                         .id             = V4L2_CID_EXPOSURE,
 107                         .type           = V4L2_CTRL_TYPE_INTEGER,
 108                         .name           = "Exposure",
 109                         .minimum        = 0,
 110                         .maximum        = 1023,
 111                         .step           = 1,
 112                         .default_value  = 256
 113                 },
 114                 .set = st6422_set_exposure,
 115                 .get = st6422_get_exposure
 116         },
 117 };
 118
 119 static int st6422_probe(struct sd *sd)
 120 {
 121         int i;
 122         s32 *sensor_settings;
 123
 124         if (sd->bridge != BRIDGE_ST6422)
 125                 return -ENODEV;
 126
 127         info("st6422 sensor detected");
 128
 129         sensor_settings = kmalloc(ARRAY_SIZE(st6422_ctrl) * sizeof(s32),
 130                                   GFP_KERNEL);
 131         if (!sensor_settings)
 132                 return -ENOMEM;
 133
 134         sd->gspca_dev.cam.cam_mode = st6422_mode;
 135         sd->gspca_dev.cam.nmodes = ARRAY_SIZE(st6422_mode);
 136         sd->desc.ctrls = st6422_ctrl;
 137         sd->desc.nctrls = ARRAY_SIZE(st6422_ctrl);
 138         sd->sensor_priv = sensor_settings;
 139
 140         for (i = 0; i < sd->desc.nctrls; i++)
 141                 sensor_settings[i] = st6422_ctrl[i].qctrl.default_value;
 142
 143         return 0;
 144 }
 145
 146 static int st6422_init(struct sd *sd)
 147 {
 148         int err = 0, i;
 149
 150         const u16 st6422_bridge_init[][2] = {
 151                 { STV_ISO_ENABLE, 0x00 }, /* disable capture */
 152                 { 0x1436, 0x00 },
 153                 { 0x1432, 0x03 },       /* 0x00-0x1F brightness */
 154                 { 0x143a, 0xF9 },       /* 0x00-0x0F contrast */
 155                 { 0x0509, 0x38 },       /* R */
 156                 { 0x050a, 0x38 },       /* G */
 157                 { 0x050b, 0x38 },       /* B */
 158                 { 0x050c, 0x2A },
 159                 { 0x050d, 0x01 },
 160
 161
 162                 { 0x1431, 0x00 },       /* 0x00-0x07 ??? */
 163                 { 0x1433, 0x34 },       /* 160x120, 0x00-0x01 night filter */
 164                 { 0x1438, 0x18 },       /* 640x480 */
 165 /* 18 bayes */
 166 /* 10 compressed? */
 167
 168                 { 0x1439, 0x00 },
 169 /* anti-noise?  0xa2 gives a perfect image */
 170
 171                 { 0x143b, 0x05 },
 172                 { 0x143c, 0x00 },       /* 0x00-0x01 - ??? */
 173
 174
 175 /* shutter time 0x0000-0x03FF */
 176 /* low value  give good picures on moving objects (but requires much light) */
 177 /* high value gives good picures in darkness (but tends to be overexposed) */
 178                 { 0x143e, 0x01 },
 179                 { 0x143d, 0x00 },
 180
 181                 { 0x1442, 0xe2 },
 182 /* write: 1x1x xxxx */
 183 /* read:  1x1x xxxx */
 184 /*        bit 5 == button pressed and hold if 0 */
 185 /* write 0xe2,0xea */
 186
 187 /* 0x144a */
 188 /* 0x00 init */
 189 /* bit 7 == button has been pressed, but not handled */
 190
 191 /* interrupt */
 192 /* if(urb->iso_frame_desc[i].status == 0x80) { */
 193 /* if(urb->iso_frame_desc[i].status == 0x88) { */
 194
 195                 { 0x1500, 0xd0 },
 196                 { 0x1500, 0xd0 },
 197                 { 0x1500, 0x50 },       /* 0x00 - 0xFF  0x80 == compr ? */
 198
 199                 { 0x1501, 0xaf },
 200 /* high val-> light area gets darker */
 201 /* low val -> light area gets lighter */
 202                 { 0x1502, 0xc2 },
 203 /* high val-> light area gets darker */
 204 /* low val -> light area gets lighter */
 205                 { 0x1503, 0x45 },
 206 /* high val-> light area gets darker */
 207 /* low val -> light area gets lighter */
 208                 { 0x1505, 0x02 },
 209 /* 2  : 324x248  80352 bytes */
 210 /* 7  : 248x162  40176 bytes */
 211 /* c+f: 162*124  20088 bytes */
 212
 213                 { 0x150e, 0x8e },
 214                 { 0x150f, 0x37 },
 215                 { 0x15c0, 0x00 },
 216                 { 0x15c1, 1023 }, /* 160x120, ISOC_PACKET_SIZE */
 217                 { 0x15c3, 0x08 },       /* 0x04/0x14 ... test pictures ??? */
 218
 219
 220                 { 0x143f, 0x01 },       /* commit settings */
 221
 222         };
 223
 224         for (i = 0; i < ARRAY_SIZE(st6422_bridge_init) && !err; i++) {
 225                 err = stv06xx_write_bridge(sd, st6422_bridge_init[i][0],
 226                                                st6422_bridge_init[i][1]);
 227         }
 228
 229         return err;
 230 }
 231
 232 static void st6422_disconnect(struct sd *sd)
 233 {
 234         sd->sensor = NULL;
 235         kfree(sd->sensor_priv);
 236 }
 237
 238 static int st6422_start(struct sd *sd)
 239 {
 240         int err, packet_size;
 241         struct cam *cam = &sd->gspca_dev.cam;
 242         s32 *sensor_settings = sd->sensor_priv;
 243         struct usb_host_interface *alt;
 244         struct usb_interface *intf;
 245
 246         intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface);
 247         alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt);
 248         if (!alt) {
 249                 PDEBUG(D_ERR, "Couldn't get altsetting");
 250                 return -EIO;
 251         }
 252
 253         packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
 254         err = stv06xx_write_bridge(sd, 0x15c1, packet_size);
 255         if (err < 0)
 256                 return err;
 257
 258         if (cam->cam_mode[sd->gspca_dev.curr_mode].priv)
 259                 err = stv06xx_write_bridge(sd, 0x1505, 0x0f);
 260         else
 261                 err = stv06xx_write_bridge(sd, 0x1505, 0x02);
 262         if (err < 0)
 263                 return err;
 264
 265         err = st6422_set_brightness(&sd->gspca_dev,
 266                                     sensor_settings[BRIGHTNESS_IDX]);
 267         if (err < 0)
 268                 return err;
 269
 270         err = st6422_set_contrast(&sd->gspca_dev,
 271                                   sensor_settings[CONTRAST_IDX]);
 272         if (err < 0)
 273                 return err;
 274
 275         err = st6422_set_exposure(&sd->gspca_dev,
 276                                   sensor_settings[EXPOSURE_IDX]);
 277         if (err < 0)
 278                 return err;
 279
 280         err = st6422_set_gain(&sd->gspca_dev,
 281                               sensor_settings[GAIN_IDX]);
 282         if (err < 0)
 283                 return err;
 284
 285         PDEBUG(D_STREAM, "Starting stream");
 286
 287         return 0;
 288 }
 289
 290 static int st6422_stop(struct sd *sd)
 291 {
 292         PDEBUG(D_STREAM, "Halting stream");
 293
 294         return 0;
 295 }
 296
 297 static int st6422_get_brightness(struct gspca_dev *gspca_dev, __s32 *val)
 298 {
 299         struct sd *sd = (struct sd *) gspca_dev;
 300         s32 *sensor_settings = sd->sensor_priv;
 301
 302         *val = sensor_settings[BRIGHTNESS_IDX];
 303
 304         PDEBUG(D_V4L2, "Read brightness %d", *val);
 305
 306         return 0;
 307 }
 308
 309 static int st6422_set_brightness(struct gspca_dev *gspca_dev, __s32 val)
 310 {
 311         int err;
 312         struct sd *sd = (struct sd *) gspca_dev;
 313         s32 *sensor_settings = sd->sensor_priv;
 314
 315         sensor_settings[BRIGHTNESS_IDX] = val;
 316
 317         if (!gspca_dev->streaming)
 318                 return 0;
 319
 320         /* val goes from 0 -> 31 */
 321         PDEBUG(D_V4L2, "Set brightness to %d", val);
 322         err = stv06xx_write_bridge(sd, 0x1432, val);
 323         if (err < 0)
 324                 return err;
 325
 326         /* commit settings */
 327         err = stv06xx_write_bridge(sd, 0x143f, 0x01);
 328         return (err < 0) ? err : 0;
 329 }
 330
 331 static int st6422_get_contrast(struct gspca_dev *gspca_dev, __s32 *val)
 332 {
 333         struct sd *sd = (struct sd *) gspca_dev;
 334         s32 *sensor_settings = sd->sensor_priv;
 335
 336         *val = sensor_settings[CONTRAST_IDX];
 337
 338         PDEBUG(D_V4L2, "Read contrast %d", *val);
 339
 340         return 0;
 341 }
 342
 343 static int st6422_set_contrast(struct gspca_dev *gspca_dev, __s32 val)
 344 {
 345         int err;
 346         struct sd *sd = (struct sd *) gspca_dev;
 347         s32 *sensor_settings = sd->sensor_priv;
 348
 349         sensor_settings[CONTRAST_IDX] = val;
 350
 351         if (!gspca_dev->streaming)
 352                 return 0;
 353
 354         /* Val goes from 0 -> 15 */
 355         PDEBUG(D_V4L2, "Set contrast to %d\n", val);
 356         err = stv06xx_write_bridge(sd, 0x143a, 0xf0 | val);
 357         if (err < 0)
 358                 return err;
 359
 360         /* commit settings */
 361         err = stv06xx_write_bridge(sd, 0x143f, 0x01);
 362         return (err < 0) ? err : 0;
 363 }
 364
 365 static int st6422_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
 366 {
 367         struct sd *sd = (struct sd *) gspca_dev;
 368         s32 *sensor_settings = sd->sensor_priv;
 369
 370         *val = sensor_settings[GAIN_IDX];
 371
 372         PDEBUG(D_V4L2, "Read gain %d", *val);
 373
 374         return 0;
 375 }
 376
 377 static int st6422_set_gain(struct gspca_dev *gspca_dev, __s32 val)
 378 {
 379         int err;
 380         struct sd *sd = (struct sd *) gspca_dev;
 381         s32 *sensor_settings = sd->sensor_priv;
 382
 383         sensor_settings[GAIN_IDX] = val;
 384
 385         if (!gspca_dev->streaming)
 386                 return 0;
 387
 388         PDEBUG(D_V4L2, "Set gain to %d", val);
 389
 390         /* Set red, green, blue, gain */
 391         err = stv06xx_write_bridge(sd, 0x0509, val);
 392         if (err < 0)
 393                 return err;
 394
 395         err = stv06xx_write_bridge(sd, 0x050a, val);
 396         if (err < 0)
 397                 return err;
 398
 399         err = stv06xx_write_bridge(sd, 0x050b, val);
 400         if (err < 0)
 401                 return err;
 402
 403         /* 2 mystery writes */
 404         err = stv06xx_write_bridge(sd, 0x050c, 0x2a);
 405         if (err < 0)
 406                 return err;
 407
 408         err = stv06xx_write_bridge(sd, 0x050d, 0x01);
 409         if (err < 0)
 410                 return err;
 411
 412         /* commit settings */
 413         err = stv06xx_write_bridge(sd, 0x143f, 0x01);
 414         return (err < 0) ? err : 0;
 415 }
 416
 417 static int st6422_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
 418 {
 419         struct sd *sd = (struct sd *) gspca_dev;
 420         s32 *sensor_settings = sd->sensor_priv;
 421
 422         *val = sensor_settings[EXPOSURE_IDX];
 423
 424         PDEBUG(D_V4L2, "Read exposure %d", *val);
 425
 426         return 0;
 427 }
 428
 429 static int st6422_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
 430 {
 431         int err;
 432         struct sd *sd = (struct sd *) gspca_dev;
 433         s32 *sensor_settings = sd->sensor_priv;
 434
 435         sensor_settings[EXPOSURE_IDX] = val;
 436
 437         if (!gspca_dev->streaming)
 438                 return 0;
 439
 440         PDEBUG(D_V4L2, "Set exposure to %d\n", val);
 441         err = stv06xx_write_bridge(sd, 0x143d, val & 0xff);
 442         if (err < 0)
 443                 return err;
 444
 445         err = stv06xx_write_bridge(sd, 0x143e, val >> 8);
 446         if (err < 0)
 447                 return err;
 448
 449         /* commit settings */
 450         err = stv06xx_write_bridge(sd, 0x143f, 0x01);
 451         return (err < 0) ? err : 0;
 452 }