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 /* antiflimmer??  0xa2 ger perfekt bild mot monitor */
 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-> ljus area blir morkare. */
 201 /* low val -> ljus area blir ljusare. */
 202                 { 0x1502, 0xc2 },
 203 /* high val-> ljus area blir morkare. */
 204 /* low val -> ljus area blir ljusare. */
 205                 { 0x1503, 0x45 },
 206 /* high val-> ljus area blir morkare. */
 207 /* low val -> ljus area blir ljusare. */
 208
 209                 { 0x1505, 0x02 },
 210 /* 2  : 324x248  80352 bytes */
 211 /* 7  : 248x162  40176 bytes */
 212 /* c+f: 162*124  20088 bytes */
 213
 214                 { 0x150e, 0x8e },
 215                 { 0x150f, 0x37 },
 216                 { 0x15c0, 0x00 },
 217                 { 0x15c1, 1023 }, /* 160x120, ISOC_PACKET_SIZE */
 218                 { 0x15c3, 0x08 },       /* 0x04/0x14 ... test pictures ??? */
 219
 220
 221                 { 0x143f, 0x01 },       /* commit settings */
 222
 223         };
 224
 225         for (i = 0; i < ARRAY_SIZE(st6422_bridge_init) && !err; i++) {
 226                 err = stv06xx_write_bridge(sd, st6422_bridge_init[i][0],
 227                                                st6422_bridge_init[i][1]);
 228         }
 229
 230         return err;
 231 }
 232
 233 static void st6422_disconnect(struct sd *sd)
 234 {
 235         sd->sensor = NULL;
 236         kfree(sd->sensor_priv);
 237 }
 238
 239 static int st6422_start(struct sd *sd)
 240 {
 241         int err, packet_size;
 242         struct cam *cam = &sd->gspca_dev.cam;
 243         s32 *sensor_settings = sd->sensor_priv;
 244         struct usb_host_interface *alt;
 245         struct usb_interface *intf;
 246
 247         intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface);
 248         alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt);
 249         if (!alt) {
 250                 PDEBUG(D_ERR, "Couldn't get altsetting");
 251                 return -EIO;
 252         }
 253
 254         packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
 255         err = stv06xx_write_bridge(sd, 0x15c1, packet_size);
 256         if (err < 0)
 257                 return err;
 258
 259         if (cam->cam_mode[sd->gspca_dev.curr_mode].priv)
 260                 err = stv06xx_write_bridge(sd, 0x1505, 0x0f);
 261         else
 262                 err = stv06xx_write_bridge(sd, 0x1505, 0x02);
 263         if (err < 0)
 264                 return err;
 265
 266         err = st6422_set_brightness(&sd->gspca_dev,
 267                                     sensor_settings[BRIGHTNESS_IDX]);
 268         if (err < 0)
 269                 return err;
 270
 271         err = st6422_set_contrast(&sd->gspca_dev,
 272                                   sensor_settings[CONTRAST_IDX]);
 273         if (err < 0)
 274                 return err;
 275
 276         err = st6422_set_exposure(&sd->gspca_dev,
 277                                   sensor_settings[EXPOSURE_IDX]);
 278         if (err < 0)
 279                 return err;
 280
 281         err = st6422_set_gain(&sd->gspca_dev,
 282                               sensor_settings[GAIN_IDX]);
 283         if (err < 0)
 284                 return err;
 285
 286         PDEBUG(D_STREAM, "Starting stream");
 287
 288         return 0;
 289 }
 290
 291 static int st6422_stop(struct sd *sd)
 292 {
 293         PDEBUG(D_STREAM, "Halting stream");
 294
 295         return 0;
 296 }
 297
 298 static int st6422_get_brightness(struct gspca_dev *gspca_dev, __s32 *val)
 299 {
 300         struct sd *sd = (struct sd *) gspca_dev;
 301         s32 *sensor_settings = sd->sensor_priv;
 302
 303         *val = sensor_settings[BRIGHTNESS_IDX];
 304
 305         PDEBUG(D_V4L2, "Read brightness %d", *val);
 306
 307         return 0;
 308 }
 309
 310 static int st6422_set_brightness(struct gspca_dev *gspca_dev, __s32 val)
 311 {
 312         int err;
 313         struct sd *sd = (struct sd *) gspca_dev;
 314         s32 *sensor_settings = sd->sensor_priv;
 315
 316         sensor_settings[BRIGHTNESS_IDX] = val;
 317
 318         if (!gspca_dev->streaming)
 319                 return 0;
 320
 321         /* val goes from 0 -> 31 */
 322         PDEBUG(D_V4L2, "Set brightness to %d", val);
 323         err = stv06xx_write_bridge(sd, 0x1432, val);
 324         if (err < 0)
 325                 return err;
 326
 327         /* commit settings */
 328         err = stv06xx_write_bridge(sd, 0x143f, 0x01);
 329         return (err < 0) ? err : 0;
 330 }
 331
 332 static int st6422_get_contrast(struct gspca_dev *gspca_dev, __s32 *val)
 333 {
 334         struct sd *sd = (struct sd *) gspca_dev;
 335         s32 *sensor_settings = sd->sensor_priv;
 336
 337         *val = sensor_settings[CONTRAST_IDX];
 338
 339         PDEBUG(D_V4L2, "Read contrast %d", *val);
 340
 341         return 0;
 342 }
 343
 344 static int st6422_set_contrast(struct gspca_dev *gspca_dev, __s32 val)
 345 {
 346         int err;
 347         struct sd *sd = (struct sd *) gspca_dev;
 348         s32 *sensor_settings = sd->sensor_priv;
 349
 350         sensor_settings[CONTRAST_IDX] = val;
 351
 352         if (!gspca_dev->streaming)
 353                 return 0;
 354
 355         /* Val goes from 0 -> 15 */
 356         PDEBUG(D_V4L2, "Set contrast to %d\n", val);
 357         err = stv06xx_write_bridge(sd, 0x143a, 0xf0 | val);
 358         if (err < 0)
 359                 return err;
 360
 361         /* commit settings */
 362         err = stv06xx_write_bridge(sd, 0x143f, 0x01);
 363         return (err < 0) ? err : 0;
 364 }
 365
 366 static int st6422_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
 367 {
 368         struct sd *sd = (struct sd *) gspca_dev;
 369         s32 *sensor_settings = sd->sensor_priv;
 370
 371         *val = sensor_settings[GAIN_IDX];
 372
 373         PDEBUG(D_V4L2, "Read gain %d", *val);
 374
 375         return 0;
 376 }
 377
 378 static int st6422_set_gain(struct gspca_dev *gspca_dev, __s32 val)
 379 {
 380         int err;
 381         struct sd *sd = (struct sd *) gspca_dev;
 382         s32 *sensor_settings = sd->sensor_priv;
 383
 384         sensor_settings[GAIN_IDX] = val;
 385
 386         if (!gspca_dev->streaming)
 387                 return 0;
 388
 389         PDEBUG(D_V4L2, "Set gain to %d", val);
 390
 391         /* Set red, green, blue, gain */
 392         err = stv06xx_write_bridge(sd, 0x0509, val);
 393         if (err < 0)
 394                 return err;
 395
 396         err = stv06xx_write_bridge(sd, 0x050a, val);
 397         if (err < 0)
 398                 return err;
 399
 400         err = stv06xx_write_bridge(sd, 0x050b, val);
 401         if (err < 0)
 402                 return err;
 403
 404         /* 2 mystery writes */
 405         err = stv06xx_write_bridge(sd, 0x050c, 0x2a);
 406         if (err < 0)
 407                 return err;
 408
 409         err = stv06xx_write_bridge(sd, 0x050d, 0x01);
 410         if (err < 0)
 411                 return err;
 412
 413         /* commit settings */
 414         err = stv06xx_write_bridge(sd, 0x143f, 0x01);
 415         return (err < 0) ? err : 0;
 416 }
 417
 418 static int st6422_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
 419 {
 420         struct sd *sd = (struct sd *) gspca_dev;
 421         s32 *sensor_settings = sd->sensor_priv;
 422
 423         *val = sensor_settings[EXPOSURE_IDX];
 424
 425         PDEBUG(D_V4L2, "Read exposure %d", *val);
 426
 427         return 0;
 428 }
 429
 430 static int st6422_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
 431 {
 432         int err;
 433         struct sd *sd = (struct sd *) gspca_dev;
 434         s32 *sensor_settings = sd->sensor_priv;
 435
 436         sensor_settings[EXPOSURE_IDX] = val;
 437
 438         if (!gspca_dev->streaming)
 439                 return 0;
 440
 441         PDEBUG(D_V4L2, "Set exposure to %d\n", val);
 442         err = stv06xx_write_bridge(sd, 0x143d, val & 0xff);
 443         if (err < 0)
 444                 return err;
 445
 446         err = stv06xx_write_bridge(sd, 0x143e, val >> 8);
 447         if (err < 0)
 448                 return err;
 449
 450         /* commit settings */
 451         err = stv06xx_write_bridge(sd, 0x143f, 0x01);
 452         return (err < 0) ? err : 0;
 453 }