1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher 4 * Mark Cave-Ayland, Carlo E Prelz, Dick Streefland 5 * Copyright (c) 2002, 2003 Tuukka Toivonen 6 * Copyright (c) 2008 Erik Andrén 7 * 8 * P/N 861037: Sensor HDCS1000 ASIC STV0600 9 * P/N 861050-0010: Sensor HDCS1000 ASIC STV0600 10 * P/N 861050-0020: Sensor Photobit PB100 ASIC STV0600-1 - QuickCam Express 11 * P/N 861055: Sensor ST VV6410 ASIC STV0610 - LEGO cam 12 * P/N 861075-0040: Sensor HDCS1000 ASIC 13 * P/N 961179-0700: Sensor ST VV6410 ASIC STV0602 - Dexxa WebCam USB 14 * P/N 861040-0000: Sensor ST VV6410 ASIC STV0610 - QuickCam Web 15 */ 16 17 /* 18 * The spec file for the PB-0100 suggests the following for best quality 19 * images after the sensor has been reset : 20 * 21 * PB_ADCGAINL = R60 = 0x03 (3 dec) : sets low reference of ADC 22 to produce good black level 23 * PB_PREADCTRL = R32 = 0x1400 (5120 dec) : Enables global gain changes 24 through R53 25 * PB_ADCMINGAIN = R52 = 0x10 (16 dec) : Sets the minimum gain for 26 auto-exposure 27 * PB_ADCGLOBALGAIN = R53 = 0x10 (16 dec) : Sets the global gain 28 * PB_EXPGAIN = R14 = 0x11 (17 dec) : Sets the auto-exposure value 29 * PB_UPDATEINT = R23 = 0x02 (2 dec) : Sets the speed on 30 auto-exposure routine 31 * PB_CFILLIN = R5 = 0x0E (14 dec) : Sets the frame rate 32 */ 33 34 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 35 36 #include "stv06xx_pb0100.h" 37 38 struct pb0100_ctrls { 39 struct { /* one big happy control cluster... */ 40 struct v4l2_ctrl *autogain; 41 struct v4l2_ctrl *gain; 42 struct v4l2_ctrl *exposure; 43 struct v4l2_ctrl *red; 44 struct v4l2_ctrl *blue; 45 struct v4l2_ctrl *natural; 46 }; 47 struct v4l2_ctrl *target; 48 }; 49 50 static struct v4l2_pix_format pb0100_mode[] = { 51 /* low res / subsample modes disabled as they are only half res horizontal, 52 halving the vertical resolution does not seem to work */ 53 { 54 320, 55 240, 56 V4L2_PIX_FMT_SGRBG8, 57 V4L2_FIELD_NONE, 58 .sizeimage = 320 * 240, 59 .bytesperline = 320, 60 .colorspace = V4L2_COLORSPACE_SRGB, 61 .priv = PB0100_CROP_TO_VGA 62 }, 63 { 64 352, 65 288, 66 V4L2_PIX_FMT_SGRBG8, 67 V4L2_FIELD_NONE, 68 .sizeimage = 352 * 288, 69 .bytesperline = 352, 70 .colorspace = V4L2_COLORSPACE_SRGB, 71 .priv = 0 72 } 73 }; 74 75 static int pb0100_s_ctrl(struct v4l2_ctrl *ctrl) 76 { 77 struct gspca_dev *gspca_dev = 78 container_of(ctrl->handler, struct gspca_dev, ctrl_handler); 79 struct sd *sd = (struct sd *)gspca_dev; 80 struct pb0100_ctrls *ctrls = sd->sensor_priv; 81 int err = -EINVAL; 82 83 switch (ctrl->id) { 84 case V4L2_CID_AUTOGAIN: 85 err = pb0100_set_autogain(gspca_dev, ctrl->val); 86 if (err) 87 break; 88 if (ctrl->val) 89 break; 90 err = pb0100_set_gain(gspca_dev, ctrls->gain->val); 91 if (err) 92 break; 93 err = pb0100_set_exposure(gspca_dev, ctrls->exposure->val); 94 break; 95 case V4L2_CTRL_CLASS_USER + 0x1001: 96 err = pb0100_set_autogain_target(gspca_dev, ctrl->val); 97 break; 98 } 99 return err; 100 } 101 102 static const struct v4l2_ctrl_ops pb0100_ctrl_ops = { 103 .s_ctrl = pb0100_s_ctrl, 104 }; 105 106 static int pb0100_init_controls(struct sd *sd) 107 { 108 struct v4l2_ctrl_handler *hdl = &sd->gspca_dev.ctrl_handler; 109 struct pb0100_ctrls *ctrls; 110 static const struct v4l2_ctrl_config autogain_target = { 111 .ops = &pb0100_ctrl_ops, 112 .id = V4L2_CTRL_CLASS_USER + 0x1000, 113 .type = V4L2_CTRL_TYPE_INTEGER, 114 .name = "Automatic Gain Target", 115 .max = 255, 116 .step = 1, 117 .def = 128, 118 }; 119 static const struct v4l2_ctrl_config natural_light = { 120 .ops = &pb0100_ctrl_ops, 121 .id = V4L2_CTRL_CLASS_USER + 0x1001, 122 .type = V4L2_CTRL_TYPE_BOOLEAN, 123 .name = "Natural Light Source", 124 .max = 1, 125 .step = 1, 126 .def = 1, 127 }; 128 129 ctrls = kzalloc(sizeof(*ctrls), GFP_KERNEL); 130 if (!ctrls) 131 return -ENOMEM; 132 133 v4l2_ctrl_handler_init(hdl, 6); 134 ctrls->autogain = v4l2_ctrl_new_std(hdl, &pb0100_ctrl_ops, 135 V4L2_CID_AUTOGAIN, 0, 1, 1, 1); 136 ctrls->exposure = v4l2_ctrl_new_std(hdl, &pb0100_ctrl_ops, 137 V4L2_CID_EXPOSURE, 0, 511, 1, 12); 138 ctrls->gain = v4l2_ctrl_new_std(hdl, &pb0100_ctrl_ops, 139 V4L2_CID_GAIN, 0, 255, 1, 128); 140 ctrls->red = v4l2_ctrl_new_std(hdl, &pb0100_ctrl_ops, 141 V4L2_CID_RED_BALANCE, -255, 255, 1, 0); 142 ctrls->blue = v4l2_ctrl_new_std(hdl, &pb0100_ctrl_ops, 143 V4L2_CID_BLUE_BALANCE, -255, 255, 1, 0); 144 ctrls->natural = v4l2_ctrl_new_custom(hdl, &natural_light, NULL); 145 ctrls->target = v4l2_ctrl_new_custom(hdl, &autogain_target, NULL); 146 if (hdl->error) { 147 kfree(ctrls); 148 return hdl->error; 149 } 150 sd->sensor_priv = ctrls; 151 v4l2_ctrl_auto_cluster(5, &ctrls->autogain, 0, false); 152 return 0; 153 } 154 155 static int pb0100_probe(struct sd *sd) 156 { 157 u16 sensor; 158 int err; 159 160 err = stv06xx_read_sensor(sd, PB_IDENT, &sensor); 161 162 if (err < 0) 163 return -ENODEV; 164 if ((sensor >> 8) != 0x64) 165 return -ENODEV; 166 167 pr_info("Photobit pb0100 sensor detected\n"); 168 169 sd->gspca_dev.cam.cam_mode = pb0100_mode; 170 sd->gspca_dev.cam.nmodes = ARRAY_SIZE(pb0100_mode); 171 172 return 0; 173 } 174 175 static int pb0100_start(struct sd *sd) 176 { 177 int err, packet_size, max_packet_size; 178 struct usb_host_interface *alt; 179 struct usb_interface *intf; 180 struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; 181 struct cam *cam = &sd->gspca_dev.cam; 182 u32 mode = cam->cam_mode[sd->gspca_dev.curr_mode].priv; 183 184 intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface); 185 alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt); 186 if (!alt) 187 return -ENODEV; 188 packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize); 189 190 /* If we don't have enough bandwidth use a lower framerate */ 191 max_packet_size = sd->sensor->max_packet_size[sd->gspca_dev.curr_mode]; 192 if (packet_size < max_packet_size) 193 stv06xx_write_sensor(sd, PB_ROWSPEED, BIT(4)|BIT(3)|BIT(1)); 194 else 195 stv06xx_write_sensor(sd, PB_ROWSPEED, BIT(5)|BIT(3)|BIT(1)); 196 197 /* Setup sensor window */ 198 if (mode & PB0100_CROP_TO_VGA) { 199 stv06xx_write_sensor(sd, PB_RSTART, 30); 200 stv06xx_write_sensor(sd, PB_CSTART, 20); 201 stv06xx_write_sensor(sd, PB_RWSIZE, 240 - 1); 202 stv06xx_write_sensor(sd, PB_CWSIZE, 320 - 1); 203 } else { 204 stv06xx_write_sensor(sd, PB_RSTART, 8); 205 stv06xx_write_sensor(sd, PB_CSTART, 4); 206 stv06xx_write_sensor(sd, PB_RWSIZE, 288 - 1); 207 stv06xx_write_sensor(sd, PB_CWSIZE, 352 - 1); 208 } 209 210 if (mode & PB0100_SUBSAMPLE) { 211 stv06xx_write_bridge(sd, STV_Y_CTRL, 0x02); /* Wrong, FIXME */ 212 stv06xx_write_bridge(sd, STV_X_CTRL, 0x06); 213 214 stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x10); 215 } else { 216 stv06xx_write_bridge(sd, STV_Y_CTRL, 0x01); 217 stv06xx_write_bridge(sd, STV_X_CTRL, 0x0a); 218 /* larger -> slower */ 219 stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x20); 220 } 221 222 err = stv06xx_write_sensor(sd, PB_CONTROL, BIT(5)|BIT(3)|BIT(1)); 223 gspca_dbg(gspca_dev, D_STREAM, "Started stream, status: %d\n", err); 224 225 return (err < 0) ? err : 0; 226 } 227 228 static int pb0100_stop(struct sd *sd) 229 { 230 struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; 231 int err; 232 233 err = stv06xx_write_sensor(sd, PB_ABORTFRAME, 1); 234 235 if (err < 0) 236 goto out; 237 238 /* Set bit 1 to zero */ 239 err = stv06xx_write_sensor(sd, PB_CONTROL, BIT(5)|BIT(3)); 240 241 gspca_dbg(gspca_dev, D_STREAM, "Halting stream\n"); 242 out: 243 return (err < 0) ? err : 0; 244 } 245 246 /* FIXME: Sort the init commands out and put them into tables, 247 this is only for getting the camera to work */ 248 /* FIXME: No error handling for now, 249 add this once the init has been converted to proper tables */ 250 static int pb0100_init(struct sd *sd) 251 { 252 stv06xx_write_bridge(sd, STV_REG00, 1); 253 stv06xx_write_bridge(sd, STV_SCAN_RATE, 0); 254 255 /* Reset sensor */ 256 stv06xx_write_sensor(sd, PB_RESET, 1); 257 stv06xx_write_sensor(sd, PB_RESET, 0); 258 259 /* Disable chip */ 260 stv06xx_write_sensor(sd, PB_CONTROL, BIT(5)|BIT(3)); 261 262 /* Gain stuff...*/ 263 stv06xx_write_sensor(sd, PB_PREADCTRL, BIT(12)|BIT(10)|BIT(6)); 264 stv06xx_write_sensor(sd, PB_ADCGLOBALGAIN, 12); 265 266 /* Set up auto-exposure */ 267 /* ADC VREF_HI new setting for a transition 268 from the Expose1 to the Expose2 setting */ 269 stv06xx_write_sensor(sd, PB_R28, 12); 270 /* gain max for autoexposure */ 271 stv06xx_write_sensor(sd, PB_ADCMAXGAIN, 180); 272 /* gain min for autoexposure */ 273 stv06xx_write_sensor(sd, PB_ADCMINGAIN, 12); 274 /* Maximum frame integration time (programmed into R8) 275 allowed for auto-exposure routine */ 276 stv06xx_write_sensor(sd, PB_R54, 3); 277 /* Minimum frame integration time (programmed into R8) 278 allowed for auto-exposure routine */ 279 stv06xx_write_sensor(sd, PB_R55, 0); 280 stv06xx_write_sensor(sd, PB_UPDATEINT, 1); 281 /* R15 Expose0 (maximum that auto-exposure may use) */ 282 stv06xx_write_sensor(sd, PB_R15, 800); 283 /* R17 Expose2 (minimum that auto-exposure may use) */ 284 stv06xx_write_sensor(sd, PB_R17, 10); 285 286 stv06xx_write_sensor(sd, PB_EXPGAIN, 0); 287 288 /* 0x14 */ 289 stv06xx_write_sensor(sd, PB_VOFFSET, 0); 290 /* 0x0D */ 291 stv06xx_write_sensor(sd, PB_ADCGAINH, 11); 292 /* Set black level (important!) */ 293 stv06xx_write_sensor(sd, PB_ADCGAINL, 0); 294 295 /* ??? */ 296 stv06xx_write_bridge(sd, STV_REG00, 0x11); 297 stv06xx_write_bridge(sd, STV_REG03, 0x45); 298 stv06xx_write_bridge(sd, STV_REG04, 0x07); 299 300 /* Scan/timing for the sensor */ 301 stv06xx_write_sensor(sd, PB_ROWSPEED, BIT(4)|BIT(3)|BIT(1)); 302 stv06xx_write_sensor(sd, PB_CFILLIN, 14); 303 stv06xx_write_sensor(sd, PB_VBL, 0); 304 stv06xx_write_sensor(sd, PB_FINTTIME, 0); 305 stv06xx_write_sensor(sd, PB_RINTTIME, 123); 306 307 stv06xx_write_bridge(sd, STV_REG01, 0xc2); 308 stv06xx_write_bridge(sd, STV_REG02, 0xb0); 309 return 0; 310 } 311 312 static int pb0100_dump(struct sd *sd) 313 { 314 return 0; 315 } 316 317 static int pb0100_set_gain(struct gspca_dev *gspca_dev, __s32 val) 318 { 319 int err; 320 struct sd *sd = (struct sd *) gspca_dev; 321 struct pb0100_ctrls *ctrls = sd->sensor_priv; 322 323 err = stv06xx_write_sensor(sd, PB_G1GAIN, val); 324 if (!err) 325 err = stv06xx_write_sensor(sd, PB_G2GAIN, val); 326 gspca_dbg(gspca_dev, D_CONF, "Set green gain to %d, status: %d\n", 327 val, err); 328 329 if (!err) 330 err = pb0100_set_red_balance(gspca_dev, ctrls->red->val); 331 if (!err) 332 err = pb0100_set_blue_balance(gspca_dev, ctrls->blue->val); 333 334 return err; 335 } 336 337 static int pb0100_set_red_balance(struct gspca_dev *gspca_dev, __s32 val) 338 { 339 int err; 340 struct sd *sd = (struct sd *) gspca_dev; 341 struct pb0100_ctrls *ctrls = sd->sensor_priv; 342 343 val += ctrls->gain->val; 344 if (val < 0) 345 val = 0; 346 else if (val > 255) 347 val = 255; 348 349 err = stv06xx_write_sensor(sd, PB_RGAIN, val); 350 gspca_dbg(gspca_dev, D_CONF, "Set red gain to %d, status: %d\n", 351 val, err); 352 353 return err; 354 } 355 356 static int pb0100_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val) 357 { 358 int err; 359 struct sd *sd = (struct sd *) gspca_dev; 360 struct pb0100_ctrls *ctrls = sd->sensor_priv; 361 362 val += ctrls->gain->val; 363 if (val < 0) 364 val = 0; 365 else if (val > 255) 366 val = 255; 367 368 err = stv06xx_write_sensor(sd, PB_BGAIN, val); 369 gspca_dbg(gspca_dev, D_CONF, "Set blue gain to %d, status: %d\n", 370 val, err); 371 372 return err; 373 } 374 375 static int pb0100_set_exposure(struct gspca_dev *gspca_dev, __s32 val) 376 { 377 struct sd *sd = (struct sd *) gspca_dev; 378 int err; 379 380 err = stv06xx_write_sensor(sd, PB_RINTTIME, val); 381 gspca_dbg(gspca_dev, D_CONF, "Set exposure to %d, status: %d\n", 382 val, err); 383 384 return err; 385 } 386 387 static int pb0100_set_autogain(struct gspca_dev *gspca_dev, __s32 val) 388 { 389 int err; 390 struct sd *sd = (struct sd *) gspca_dev; 391 struct pb0100_ctrls *ctrls = sd->sensor_priv; 392 393 if (val) { 394 if (ctrls->natural->val) 395 val = BIT(6)|BIT(4)|BIT(0); 396 else 397 val = BIT(4)|BIT(0); 398 } else 399 val = 0; 400 401 err = stv06xx_write_sensor(sd, PB_EXPGAIN, val); 402 gspca_dbg(gspca_dev, D_CONF, "Set autogain to %d (natural: %d), status: %d\n", 403 val, ctrls->natural->val, err); 404 405 return err; 406 } 407 408 static int pb0100_set_autogain_target(struct gspca_dev *gspca_dev, __s32 val) 409 { 410 int err, totalpixels, brightpixels, darkpixels; 411 struct sd *sd = (struct sd *) gspca_dev; 412 413 /* Number of pixels counted by the sensor when subsampling the pixels. 414 * Slightly larger than the real value to avoid oscillation */ 415 totalpixels = gspca_dev->pixfmt.width * gspca_dev->pixfmt.height; 416 totalpixels = totalpixels/(8*8) + totalpixels/(64*64); 417 418 brightpixels = (totalpixels * val) >> 8; 419 darkpixels = totalpixels - brightpixels; 420 err = stv06xx_write_sensor(sd, PB_R21, brightpixels); 421 if (!err) 422 err = stv06xx_write_sensor(sd, PB_R22, darkpixels); 423 424 gspca_dbg(gspca_dev, D_CONF, "Set autogain target to %d, status: %d\n", 425 val, err); 426 427 return err; 428 } 429