stv06xx_pb0100.c revision 0c0d06cac63ee327ceaab4b5ffe2206574ab86bd
1/* 2 * Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher 3 * Mark Cave-Ayland, Carlo E Prelz, Dick Streefland 4 * Copyright (c) 2002, 2003 Tuukka Toivonen 5 * Copyright (c) 2008 Erik Andrén 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 * 21 * P/N 861037: Sensor HDCS1000 ASIC STV0600 22 * P/N 861050-0010: Sensor HDCS1000 ASIC STV0600 23 * P/N 861050-0020: Sensor Photobit PB100 ASIC STV0600-1 - QuickCam Express 24 * P/N 861055: Sensor ST VV6410 ASIC STV0610 - LEGO cam 25 * P/N 861075-0040: Sensor HDCS1000 ASIC 26 * P/N 961179-0700: Sensor ST VV6410 ASIC STV0602 - Dexxa WebCam USB 27 * P/N 861040-0000: Sensor ST VV6410 ASIC STV0610 - QuickCam Web 28 */ 29 30/* 31 * The spec file for the PB-0100 suggests the following for best quality 32 * images after the sensor has been reset : 33 * 34 * PB_ADCGAINL = R60 = 0x03 (3 dec) : sets low reference of ADC 35 to produce good black level 36 * PB_PREADCTRL = R32 = 0x1400 (5120 dec) : Enables global gain changes 37 through R53 38 * PB_ADCMINGAIN = R52 = 0x10 (16 dec) : Sets the minimum gain for 39 auto-exposure 40 * PB_ADCGLOBALGAIN = R53 = 0x10 (16 dec) : Sets the global gain 41 * PB_EXPGAIN = R14 = 0x11 (17 dec) : Sets the auto-exposure value 42 * PB_UPDATEINT = R23 = 0x02 (2 dec) : Sets the speed on 43 auto-exposure routine 44 * PB_CFILLIN = R5 = 0x0E (14 dec) : Sets the frame rate 45 */ 46 47#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 48 49#include "stv06xx_pb0100.h" 50 51struct pb0100_ctrls { 52 struct { /* one big happy control cluster... */ 53 struct v4l2_ctrl *autogain; 54 struct v4l2_ctrl *gain; 55 struct v4l2_ctrl *exposure; 56 struct v4l2_ctrl *red; 57 struct v4l2_ctrl *blue; 58 struct v4l2_ctrl *natural; 59 }; 60 struct v4l2_ctrl *target; 61}; 62 63static struct v4l2_pix_format pb0100_mode[] = { 64/* low res / subsample modes disabled as they are only half res horizontal, 65 halving the vertical resolution does not seem to work */ 66 { 67 320, 68 240, 69 V4L2_PIX_FMT_SGRBG8, 70 V4L2_FIELD_NONE, 71 .sizeimage = 320 * 240, 72 .bytesperline = 320, 73 .colorspace = V4L2_COLORSPACE_SRGB, 74 .priv = PB0100_CROP_TO_VGA 75 }, 76 { 77 352, 78 288, 79 V4L2_PIX_FMT_SGRBG8, 80 V4L2_FIELD_NONE, 81 .sizeimage = 352 * 288, 82 .bytesperline = 352, 83 .colorspace = V4L2_COLORSPACE_SRGB, 84 .priv = 0 85 } 86}; 87 88static int pb0100_s_ctrl(struct v4l2_ctrl *ctrl) 89{ 90 struct gspca_dev *gspca_dev = 91 container_of(ctrl->handler, struct gspca_dev, ctrl_handler); 92 struct sd *sd = (struct sd *)gspca_dev; 93 struct pb0100_ctrls *ctrls = sd->sensor_priv; 94 int err = -EINVAL; 95 96 switch (ctrl->id) { 97 case V4L2_CID_AUTOGAIN: 98 err = pb0100_set_autogain(gspca_dev, ctrl->val); 99 if (err) 100 break; 101 if (ctrl->val) 102 break; 103 err = pb0100_set_gain(gspca_dev, ctrls->gain->val); 104 if (err) 105 break; 106 err = pb0100_set_exposure(gspca_dev, ctrls->exposure->val); 107 break; 108 case V4L2_CTRL_CLASS_USER + 0x1001: 109 err = pb0100_set_autogain_target(gspca_dev, ctrl->val); 110 break; 111 } 112 return err; 113} 114 115static const struct v4l2_ctrl_ops pb0100_ctrl_ops = { 116 .s_ctrl = pb0100_s_ctrl, 117}; 118 119static int pb0100_init_controls(struct sd *sd) 120{ 121 struct v4l2_ctrl_handler *hdl = &sd->gspca_dev.ctrl_handler; 122 struct pb0100_ctrls *ctrls; 123 static const struct v4l2_ctrl_config autogain_target = { 124 .ops = &pb0100_ctrl_ops, 125 .id = V4L2_CTRL_CLASS_USER + 0x1000, 126 .type = V4L2_CTRL_TYPE_INTEGER, 127 .name = "Automatic Gain Target", 128 .max = 255, 129 .step = 1, 130 .def = 128, 131 }; 132 static const struct v4l2_ctrl_config natural_light = { 133 .ops = &pb0100_ctrl_ops, 134 .id = V4L2_CTRL_CLASS_USER + 0x1001, 135 .type = V4L2_CTRL_TYPE_BOOLEAN, 136 .name = "Natural Light Source", 137 .max = 1, 138 .step = 1, 139 .def = 1, 140 }; 141 142 ctrls = kzalloc(sizeof(*ctrls), GFP_KERNEL); 143 if (!ctrls) 144 return -ENOMEM; 145 146 v4l2_ctrl_handler_init(hdl, 6); 147 ctrls->autogain = v4l2_ctrl_new_std(hdl, &pb0100_ctrl_ops, 148 V4L2_CID_AUTOGAIN, 0, 1, 1, 1); 149 ctrls->exposure = v4l2_ctrl_new_std(hdl, &pb0100_ctrl_ops, 150 V4L2_CID_EXPOSURE, 0, 511, 1, 12); 151 ctrls->gain = v4l2_ctrl_new_std(hdl, &pb0100_ctrl_ops, 152 V4L2_CID_GAIN, 0, 255, 1, 128); 153 ctrls->red = v4l2_ctrl_new_std(hdl, &pb0100_ctrl_ops, 154 V4L2_CID_RED_BALANCE, -255, 255, 1, 0); 155 ctrls->blue = v4l2_ctrl_new_std(hdl, &pb0100_ctrl_ops, 156 V4L2_CID_BLUE_BALANCE, -255, 255, 1, 0); 157 ctrls->natural = v4l2_ctrl_new_custom(hdl, &natural_light, NULL); 158 ctrls->target = v4l2_ctrl_new_custom(hdl, &autogain_target, NULL); 159 if (hdl->error) { 160 kfree(ctrls); 161 return hdl->error; 162 } 163 sd->sensor_priv = ctrls; 164 v4l2_ctrl_auto_cluster(5, &ctrls->autogain, 0, false); 165 return 0; 166} 167 168static int pb0100_probe(struct sd *sd) 169{ 170 u16 sensor; 171 int err; 172 173 err = stv06xx_read_sensor(sd, PB_IDENT, &sensor); 174 175 if (err < 0) 176 return -ENODEV; 177 if ((sensor >> 8) != 0x64) 178 return -ENODEV; 179 180 pr_info("Photobit pb0100 sensor detected\n"); 181 182 sd->gspca_dev.cam.cam_mode = pb0100_mode; 183 sd->gspca_dev.cam.nmodes = ARRAY_SIZE(pb0100_mode); 184 185 return 0; 186} 187 188static int pb0100_start(struct sd *sd) 189{ 190 int err, packet_size, max_packet_size; 191 struct usb_host_interface *alt; 192 struct usb_interface *intf; 193 struct cam *cam = &sd->gspca_dev.cam; 194 u32 mode = cam->cam_mode[sd->gspca_dev.curr_mode].priv; 195 196 intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface); 197 alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt); 198 if (!alt) 199 return -ENODEV; 200 packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize); 201 202 /* If we don't have enough bandwidth use a lower framerate */ 203 max_packet_size = sd->sensor->max_packet_size[sd->gspca_dev.curr_mode]; 204 if (packet_size < max_packet_size) 205 stv06xx_write_sensor(sd, PB_ROWSPEED, BIT(4)|BIT(3)|BIT(1)); 206 else 207 stv06xx_write_sensor(sd, PB_ROWSPEED, BIT(5)|BIT(3)|BIT(1)); 208 209 /* Setup sensor window */ 210 if (mode & PB0100_CROP_TO_VGA) { 211 stv06xx_write_sensor(sd, PB_RSTART, 30); 212 stv06xx_write_sensor(sd, PB_CSTART, 20); 213 stv06xx_write_sensor(sd, PB_RWSIZE, 240 - 1); 214 stv06xx_write_sensor(sd, PB_CWSIZE, 320 - 1); 215 } else { 216 stv06xx_write_sensor(sd, PB_RSTART, 8); 217 stv06xx_write_sensor(sd, PB_CSTART, 4); 218 stv06xx_write_sensor(sd, PB_RWSIZE, 288 - 1); 219 stv06xx_write_sensor(sd, PB_CWSIZE, 352 - 1); 220 } 221 222 if (mode & PB0100_SUBSAMPLE) { 223 stv06xx_write_bridge(sd, STV_Y_CTRL, 0x02); /* Wrong, FIXME */ 224 stv06xx_write_bridge(sd, STV_X_CTRL, 0x06); 225 226 stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x10); 227 } else { 228 stv06xx_write_bridge(sd, STV_Y_CTRL, 0x01); 229 stv06xx_write_bridge(sd, STV_X_CTRL, 0x0a); 230 /* larger -> slower */ 231 stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x20); 232 } 233 234 err = stv06xx_write_sensor(sd, PB_CONTROL, BIT(5)|BIT(3)|BIT(1)); 235 PDEBUG(D_STREAM, "Started stream, status: %d", err); 236 237 return (err < 0) ? err : 0; 238} 239 240static int pb0100_stop(struct sd *sd) 241{ 242 int err; 243 244 err = stv06xx_write_sensor(sd, PB_ABORTFRAME, 1); 245 246 if (err < 0) 247 goto out; 248 249 /* Set bit 1 to zero */ 250 err = stv06xx_write_sensor(sd, PB_CONTROL, BIT(5)|BIT(3)); 251 252 PDEBUG(D_STREAM, "Halting stream"); 253out: 254 return (err < 0) ? err : 0; 255} 256 257/* FIXME: Sort the init commands out and put them into tables, 258 this is only for getting the camera to work */ 259/* FIXME: No error handling for now, 260 add this once the init has been converted to proper tables */ 261static int pb0100_init(struct sd *sd) 262{ 263 stv06xx_write_bridge(sd, STV_REG00, 1); 264 stv06xx_write_bridge(sd, STV_SCAN_RATE, 0); 265 266 /* Reset sensor */ 267 stv06xx_write_sensor(sd, PB_RESET, 1); 268 stv06xx_write_sensor(sd, PB_RESET, 0); 269 270 /* Disable chip */ 271 stv06xx_write_sensor(sd, PB_CONTROL, BIT(5)|BIT(3)); 272 273 /* Gain stuff...*/ 274 stv06xx_write_sensor(sd, PB_PREADCTRL, BIT(12)|BIT(10)|BIT(6)); 275 stv06xx_write_sensor(sd, PB_ADCGLOBALGAIN, 12); 276 277 /* Set up auto-exposure */ 278 /* ADC VREF_HI new setting for a transition 279 from the Expose1 to the Expose2 setting */ 280 stv06xx_write_sensor(sd, PB_R28, 12); 281 /* gain max for autoexposure */ 282 stv06xx_write_sensor(sd, PB_ADCMAXGAIN, 180); 283 /* gain min for autoexposure */ 284 stv06xx_write_sensor(sd, PB_ADCMINGAIN, 12); 285 /* Maximum frame integration time (programmed into R8) 286 allowed for auto-exposure routine */ 287 stv06xx_write_sensor(sd, PB_R54, 3); 288 /* Minimum frame integration time (programmed into R8) 289 allowed for auto-exposure routine */ 290 stv06xx_write_sensor(sd, PB_R55, 0); 291 stv06xx_write_sensor(sd, PB_UPDATEINT, 1); 292 /* R15 Expose0 (maximum that auto-exposure may use) */ 293 stv06xx_write_sensor(sd, PB_R15, 800); 294 /* R17 Expose2 (minimum that auto-exposure may use) */ 295 stv06xx_write_sensor(sd, PB_R17, 10); 296 297 stv06xx_write_sensor(sd, PB_EXPGAIN, 0); 298 299 /* 0x14 */ 300 stv06xx_write_sensor(sd, PB_VOFFSET, 0); 301 /* 0x0D */ 302 stv06xx_write_sensor(sd, PB_ADCGAINH, 11); 303 /* Set black level (important!) */ 304 stv06xx_write_sensor(sd, PB_ADCGAINL, 0); 305 306 /* ??? */ 307 stv06xx_write_bridge(sd, STV_REG00, 0x11); 308 stv06xx_write_bridge(sd, STV_REG03, 0x45); 309 stv06xx_write_bridge(sd, STV_REG04, 0x07); 310 311 /* Scan/timing for the sensor */ 312 stv06xx_write_sensor(sd, PB_ROWSPEED, BIT(4)|BIT(3)|BIT(1)); 313 stv06xx_write_sensor(sd, PB_CFILLIN, 14); 314 stv06xx_write_sensor(sd, PB_VBL, 0); 315 stv06xx_write_sensor(sd, PB_FINTTIME, 0); 316 stv06xx_write_sensor(sd, PB_RINTTIME, 123); 317 318 stv06xx_write_bridge(sd, STV_REG01, 0xc2); 319 stv06xx_write_bridge(sd, STV_REG02, 0xb0); 320 return 0; 321} 322 323static int pb0100_dump(struct sd *sd) 324{ 325 return 0; 326} 327 328static int pb0100_set_gain(struct gspca_dev *gspca_dev, __s32 val) 329{ 330 int err; 331 struct sd *sd = (struct sd *) gspca_dev; 332 struct pb0100_ctrls *ctrls = sd->sensor_priv; 333 334 err = stv06xx_write_sensor(sd, PB_G1GAIN, val); 335 if (!err) 336 err = stv06xx_write_sensor(sd, PB_G2GAIN, val); 337 PDEBUG(D_V4L2, "Set green gain to %d, status: %d", val, err); 338 339 if (!err) 340 err = pb0100_set_red_balance(gspca_dev, ctrls->red->val); 341 if (!err) 342 err = pb0100_set_blue_balance(gspca_dev, ctrls->blue->val); 343 344 return err; 345} 346 347static int pb0100_set_red_balance(struct gspca_dev *gspca_dev, __s32 val) 348{ 349 int err; 350 struct sd *sd = (struct sd *) gspca_dev; 351 struct pb0100_ctrls *ctrls = sd->sensor_priv; 352 353 val += ctrls->gain->val; 354 if (val < 0) 355 val = 0; 356 else if (val > 255) 357 val = 255; 358 359 err = stv06xx_write_sensor(sd, PB_RGAIN, val); 360 PDEBUG(D_V4L2, "Set red gain to %d, status: %d", val, err); 361 362 return err; 363} 364 365static int pb0100_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val) 366{ 367 int err; 368 struct sd *sd = (struct sd *) gspca_dev; 369 struct pb0100_ctrls *ctrls = sd->sensor_priv; 370 371 val += ctrls->gain->val; 372 if (val < 0) 373 val = 0; 374 else if (val > 255) 375 val = 255; 376 377 err = stv06xx_write_sensor(sd, PB_BGAIN, val); 378 PDEBUG(D_V4L2, "Set blue gain to %d, status: %d", val, err); 379 380 return err; 381} 382 383static int pb0100_set_exposure(struct gspca_dev *gspca_dev, __s32 val) 384{ 385 struct sd *sd = (struct sd *) gspca_dev; 386 int err; 387 388 err = stv06xx_write_sensor(sd, PB_RINTTIME, val); 389 PDEBUG(D_V4L2, "Set exposure to %d, status: %d", val, err); 390 391 return err; 392} 393 394static int pb0100_set_autogain(struct gspca_dev *gspca_dev, __s32 val) 395{ 396 int err; 397 struct sd *sd = (struct sd *) gspca_dev; 398 struct pb0100_ctrls *ctrls = sd->sensor_priv; 399 400 if (val) { 401 if (ctrls->natural->val) 402 val = BIT(6)|BIT(4)|BIT(0); 403 else 404 val = BIT(4)|BIT(0); 405 } else 406 val = 0; 407 408 err = stv06xx_write_sensor(sd, PB_EXPGAIN, val); 409 PDEBUG(D_V4L2, "Set autogain to %d (natural: %d), status: %d", 410 val, ctrls->natural->val, err); 411 412 return err; 413} 414 415static int pb0100_set_autogain_target(struct gspca_dev *gspca_dev, __s32 val) 416{ 417 int err, totalpixels, brightpixels, darkpixels; 418 struct sd *sd = (struct sd *) gspca_dev; 419 420 /* Number of pixels counted by the sensor when subsampling the pixels. 421 * Slightly larger than the real value to avoid oscillation */ 422 totalpixels = gspca_dev->width * gspca_dev->height; 423 totalpixels = totalpixels/(8*8) + totalpixels/(64*64); 424 425 brightpixels = (totalpixels * val) >> 8; 426 darkpixels = totalpixels - brightpixels; 427 err = stv06xx_write_sensor(sd, PB_R21, brightpixels); 428 if (!err) 429 err = stv06xx_write_sensor(sd, PB_R22, darkpixels); 430 431 PDEBUG(D_V4L2, "Set autogain target to %d, status: %d", val, err); 432 433 return err; 434} 435