1 /* 2 * Jeilinj subdriver 3 * 4 * Supports some Jeilin dual-mode cameras which use bulk transport and 5 * download raw JPEG data. 6 * 7 * Copyright (C) 2009 Theodore Kilgore 8 * 9 * Sportscam DV15 support and control settings are 10 * Copyright (C) 2011 Patrice Chotard 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License as published by 14 * the Free Software Foundation; either version 2 of the License, or 15 * any later version. 16 * 17 * This program is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU General Public License for more details. 21 */ 22 23 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 24 25 #define MODULE_NAME "jeilinj" 26 27 #include <linux/slab.h> 28 #include "gspca.h" 29 #include "jpeg.h" 30 31 MODULE_AUTHOR("Theodore Kilgore <kilgota@auburn.edu>"); 32 MODULE_DESCRIPTION("GSPCA/JEILINJ USB Camera Driver"); 33 MODULE_LICENSE("GPL"); 34 35 /* Default timeouts, in ms */ 36 #define JEILINJ_CMD_TIMEOUT 500 37 #define JEILINJ_CMD_DELAY 160 38 #define JEILINJ_DATA_TIMEOUT 1000 39 40 /* Maximum transfer size to use. */ 41 #define JEILINJ_MAX_TRANSFER 0x200 42 #define FRAME_HEADER_LEN 0x10 43 #define FRAME_START 0xFFFFFFFF 44 45 enum { 46 SAKAR_57379, 47 SPORTSCAM_DV15, 48 }; 49 50 #define CAMQUALITY_MIN 0 /* highest cam quality */ 51 #define CAMQUALITY_MAX 97 /* lowest cam quality */ 52 53 /* Structure to hold all of our device specific stuff */ 54 struct sd { 55 struct gspca_dev gspca_dev; /* !! must be the first item */ 56 int blocks_left; 57 const struct v4l2_pix_format *cap_mode; 58 struct v4l2_ctrl *freq; 59 struct v4l2_ctrl *jpegqual; 60 /* Driver stuff */ 61 u8 type; 62 u8 quality; /* image quality */ 63 #define QUALITY_MIN 35 64 #define QUALITY_MAX 85 65 #define QUALITY_DEF 85 66 u8 jpeg_hdr[JPEG_HDR_SZ]; 67 }; 68 69 struct jlj_command { 70 unsigned char instruction[2]; 71 unsigned char ack_wanted; 72 unsigned char delay; 73 }; 74 75 /* AFAICT these cameras will only do 320x240. */ 76 static struct v4l2_pix_format jlj_mode[] = { 77 { 320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, 78 .bytesperline = 320, 79 .sizeimage = 320 * 240, 80 .colorspace = V4L2_COLORSPACE_JPEG, 81 .priv = 0}, 82 { 640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, 83 .bytesperline = 640, 84 .sizeimage = 640 * 480, 85 .colorspace = V4L2_COLORSPACE_JPEG, 86 .priv = 0} 87 }; 88 89 /* 90 * cam uses endpoint 0x03 to send commands, 0x84 for read commands, 91 * and 0x82 for bulk transfer. 92 */ 93 94 /* All commands are two bytes only */ 95 static void jlj_write2(struct gspca_dev *gspca_dev, unsigned char *command) 96 { 97 int retval; 98 99 if (gspca_dev->usb_err < 0) 100 return; 101 memcpy(gspca_dev->usb_buf, command, 2); 102 retval = usb_bulk_msg(gspca_dev->dev, 103 usb_sndbulkpipe(gspca_dev->dev, 3), 104 gspca_dev->usb_buf, 2, NULL, 500); 105 if (retval < 0) { 106 pr_err("command write [%02x] error %d\n", 107 gspca_dev->usb_buf[0], retval); 108 gspca_dev->usb_err = retval; 109 } 110 } 111 112 /* Responses are one byte only */ 113 static void jlj_read1(struct gspca_dev *gspca_dev, unsigned char *response) 114 { 115 int retval; 116 117 if (gspca_dev->usb_err < 0) 118 return; 119 retval = usb_bulk_msg(gspca_dev->dev, 120 usb_rcvbulkpipe(gspca_dev->dev, 0x84), 121 gspca_dev->usb_buf, 1, NULL, 500); 122 *response = gspca_dev->usb_buf[0]; 123 if (retval < 0) { 124 pr_err("read command [%02x] error %d\n", 125 gspca_dev->usb_buf[0], retval); 126 gspca_dev->usb_err = retval; 127 } 128 } 129 130 static void setfreq(struct gspca_dev *gspca_dev, s32 val) 131 { 132 u8 freq_commands[][2] = { 133 {0x71, 0x80}, 134 {0x70, 0x07} 135 }; 136 137 freq_commands[0][1] |= val >> 1; 138 139 jlj_write2(gspca_dev, freq_commands[0]); 140 jlj_write2(gspca_dev, freq_commands[1]); 141 } 142 143 static void setcamquality(struct gspca_dev *gspca_dev, s32 val) 144 { 145 u8 quality_commands[][2] = { 146 {0x71, 0x1E}, 147 {0x70, 0x06} 148 }; 149 u8 camquality; 150 151 /* adapt camera quality from jpeg quality */ 152 camquality = ((QUALITY_MAX - val) * CAMQUALITY_MAX) 153 / (QUALITY_MAX - QUALITY_MIN); 154 quality_commands[0][1] += camquality; 155 156 jlj_write2(gspca_dev, quality_commands[0]); 157 jlj_write2(gspca_dev, quality_commands[1]); 158 } 159 160 static void setautogain(struct gspca_dev *gspca_dev, s32 val) 161 { 162 u8 autogain_commands[][2] = { 163 {0x94, 0x02}, 164 {0xcf, 0x00} 165 }; 166 167 autogain_commands[1][1] = val << 4; 168 169 jlj_write2(gspca_dev, autogain_commands[0]); 170 jlj_write2(gspca_dev, autogain_commands[1]); 171 } 172 173 static void setred(struct gspca_dev *gspca_dev, s32 val) 174 { 175 u8 setred_commands[][2] = { 176 {0x94, 0x02}, 177 {0xe6, 0x00} 178 }; 179 180 setred_commands[1][1] = val; 181 182 jlj_write2(gspca_dev, setred_commands[0]); 183 jlj_write2(gspca_dev, setred_commands[1]); 184 } 185 186 static void setgreen(struct gspca_dev *gspca_dev, s32 val) 187 { 188 u8 setgreen_commands[][2] = { 189 {0x94, 0x02}, 190 {0xe7, 0x00} 191 }; 192 193 setgreen_commands[1][1] = val; 194 195 jlj_write2(gspca_dev, setgreen_commands[0]); 196 jlj_write2(gspca_dev, setgreen_commands[1]); 197 } 198 199 static void setblue(struct gspca_dev *gspca_dev, s32 val) 200 { 201 u8 setblue_commands[][2] = { 202 {0x94, 0x02}, 203 {0xe9, 0x00} 204 }; 205 206 setblue_commands[1][1] = val; 207 208 jlj_write2(gspca_dev, setblue_commands[0]); 209 jlj_write2(gspca_dev, setblue_commands[1]); 210 } 211 212 static int jlj_start(struct gspca_dev *gspca_dev) 213 { 214 int i; 215 int start_commands_size; 216 u8 response = 0xff; 217 struct sd *sd = (struct sd *) gspca_dev; 218 struct jlj_command start_commands[] = { 219 {{0x71, 0x81}, 0, 0}, 220 {{0x70, 0x05}, 0, JEILINJ_CMD_DELAY}, 221 {{0x95, 0x70}, 1, 0}, 222 {{0x71, 0x81 - gspca_dev->curr_mode}, 0, 0}, 223 {{0x70, 0x04}, 0, JEILINJ_CMD_DELAY}, 224 {{0x95, 0x70}, 1, 0}, 225 {{0x71, 0x00}, 0, 0}, /* start streaming ??*/ 226 {{0x70, 0x08}, 0, JEILINJ_CMD_DELAY}, 227 {{0x95, 0x70}, 1, 0}, 228 #define SPORTSCAM_DV15_CMD_SIZE 9 229 {{0x94, 0x02}, 0, 0}, 230 {{0xde, 0x24}, 0, 0}, 231 {{0x94, 0x02}, 0, 0}, 232 {{0xdd, 0xf0}, 0, 0}, 233 {{0x94, 0x02}, 0, 0}, 234 {{0xe3, 0x2c}, 0, 0}, 235 {{0x94, 0x02}, 0, 0}, 236 {{0xe4, 0x00}, 0, 0}, 237 {{0x94, 0x02}, 0, 0}, 238 {{0xe5, 0x00}, 0, 0}, 239 {{0x94, 0x02}, 0, 0}, 240 {{0xe6, 0x2c}, 0, 0}, 241 {{0x94, 0x03}, 0, 0}, 242 {{0xaa, 0x00}, 0, 0} 243 }; 244 245 sd->blocks_left = 0; 246 /* Under Windows, USB spy shows that only the 9 first start 247 * commands are used for SPORTSCAM_DV15 webcam 248 */ 249 if (sd->type == SPORTSCAM_DV15) 250 start_commands_size = SPORTSCAM_DV15_CMD_SIZE; 251 else 252 start_commands_size = ARRAY_SIZE(start_commands); 253 254 for (i = 0; i < start_commands_size; i++) { 255 jlj_write2(gspca_dev, start_commands[i].instruction); 256 if (start_commands[i].delay) 257 msleep(start_commands[i].delay); 258 if (start_commands[i].ack_wanted) 259 jlj_read1(gspca_dev, &response); 260 } 261 setcamquality(gspca_dev, v4l2_ctrl_g_ctrl(sd->jpegqual)); 262 msleep(2); 263 setfreq(gspca_dev, v4l2_ctrl_g_ctrl(sd->freq)); 264 if (gspca_dev->usb_err < 0) 265 PERR("Start streaming command failed"); 266 return gspca_dev->usb_err; 267 } 268 269 static void sd_pkt_scan(struct gspca_dev *gspca_dev, 270 u8 *data, int len) 271 { 272 struct sd *sd = (struct sd *) gspca_dev; 273 int packet_type; 274 u32 header_marker; 275 276 PDEBUG(D_STREAM, "Got %d bytes out of %d for Block 0", 277 len, JEILINJ_MAX_TRANSFER); 278 if (len != JEILINJ_MAX_TRANSFER) { 279 PDEBUG(D_PACK, "bad length"); 280 goto discard; 281 } 282 /* check if it's start of frame */ 283 header_marker = ((u32 *)data)[0]; 284 if (header_marker == FRAME_START) { 285 sd->blocks_left = data[0x0a] - 1; 286 PDEBUG(D_STREAM, "blocks_left = 0x%x", sd->blocks_left); 287 /* Start a new frame, and add the JPEG header, first thing */ 288 gspca_frame_add(gspca_dev, FIRST_PACKET, 289 sd->jpeg_hdr, JPEG_HDR_SZ); 290 /* Toss line 0 of data block 0, keep the rest. */ 291 gspca_frame_add(gspca_dev, INTER_PACKET, 292 data + FRAME_HEADER_LEN, 293 JEILINJ_MAX_TRANSFER - FRAME_HEADER_LEN); 294 } else if (sd->blocks_left > 0) { 295 PDEBUG(D_STREAM, "%d blocks remaining for frame", 296 sd->blocks_left); 297 sd->blocks_left -= 1; 298 if (sd->blocks_left == 0) 299 packet_type = LAST_PACKET; 300 else 301 packet_type = INTER_PACKET; 302 gspca_frame_add(gspca_dev, packet_type, 303 data, JEILINJ_MAX_TRANSFER); 304 } else 305 goto discard; 306 return; 307 discard: 308 /* Discard data until a new frame starts. */ 309 gspca_dev->last_packet_type = DISCARD_PACKET; 310 } 311 312 /* This function is called at probe time just before sd_init */ 313 static int sd_config(struct gspca_dev *gspca_dev, 314 const struct usb_device_id *id) 315 { 316 struct cam *cam = &gspca_dev->cam; 317 struct sd *dev = (struct sd *) gspca_dev; 318 319 dev->type = id->driver_info; 320 dev->quality = QUALITY_DEF; 321 322 cam->cam_mode = jlj_mode; 323 cam->nmodes = ARRAY_SIZE(jlj_mode); 324 cam->bulk = 1; 325 cam->bulk_nurbs = 1; 326 cam->bulk_size = JEILINJ_MAX_TRANSFER; 327 return 0; 328 } 329 330 static void sd_stopN(struct gspca_dev *gspca_dev) 331 { 332 int i; 333 u8 *buf; 334 static u8 stop_commands[][2] = { 335 {0x71, 0x00}, 336 {0x70, 0x09}, 337 {0x71, 0x80}, 338 {0x70, 0x05} 339 }; 340 341 for (;;) { 342 /* get the image remaining blocks */ 343 usb_bulk_msg(gspca_dev->dev, 344 gspca_dev->urb[0]->pipe, 345 gspca_dev->urb[0]->transfer_buffer, 346 JEILINJ_MAX_TRANSFER, NULL, 347 JEILINJ_DATA_TIMEOUT); 348 349 /* search for 0xff 0xd9 (EOF for JPEG) */ 350 i = 0; 351 buf = gspca_dev->urb[0]->transfer_buffer; 352 while ((i < (JEILINJ_MAX_TRANSFER - 1)) && 353 ((buf[i] != 0xff) || (buf[i+1] != 0xd9))) 354 i++; 355 356 if (i != (JEILINJ_MAX_TRANSFER - 1)) 357 /* last remaining block found */ 358 break; 359 } 360 361 for (i = 0; i < ARRAY_SIZE(stop_commands); i++) 362 jlj_write2(gspca_dev, stop_commands[i]); 363 } 364 365 /* this function is called at probe and resume time */ 366 static int sd_init(struct gspca_dev *gspca_dev) 367 { 368 return gspca_dev->usb_err; 369 } 370 371 /* Set up for getting frames. */ 372 static int sd_start(struct gspca_dev *gspca_dev) 373 { 374 struct sd *dev = (struct sd *) gspca_dev; 375 376 /* create the JPEG header */ 377 jpeg_define(dev->jpeg_hdr, gspca_dev->pixfmt.height, 378 gspca_dev->pixfmt.width, 379 0x21); /* JPEG 422 */ 380 jpeg_set_qual(dev->jpeg_hdr, dev->quality); 381 PDEBUG(D_STREAM, "Start streaming at %dx%d", 382 gspca_dev->pixfmt.height, gspca_dev->pixfmt.width); 383 jlj_start(gspca_dev); 384 return gspca_dev->usb_err; 385 } 386 387 /* Table of supported USB devices */ 388 static const struct usb_device_id device_table[] = { 389 {USB_DEVICE(0x0979, 0x0280), .driver_info = SAKAR_57379}, 390 {USB_DEVICE(0x0979, 0x0270), .driver_info = SPORTSCAM_DV15}, 391 {} 392 }; 393 394 MODULE_DEVICE_TABLE(usb, device_table); 395 396 static int sd_s_ctrl(struct v4l2_ctrl *ctrl) 397 { 398 struct gspca_dev *gspca_dev = 399 container_of(ctrl->handler, struct gspca_dev, ctrl_handler); 400 struct sd *sd = (struct sd *)gspca_dev; 401 402 gspca_dev->usb_err = 0; 403 404 if (!gspca_dev->streaming) 405 return 0; 406 407 switch (ctrl->id) { 408 case V4L2_CID_POWER_LINE_FREQUENCY: 409 setfreq(gspca_dev, ctrl->val); 410 break; 411 case V4L2_CID_RED_BALANCE: 412 setred(gspca_dev, ctrl->val); 413 break; 414 case V4L2_CID_GAIN: 415 setgreen(gspca_dev, ctrl->val); 416 break; 417 case V4L2_CID_BLUE_BALANCE: 418 setblue(gspca_dev, ctrl->val); 419 break; 420 case V4L2_CID_AUTOGAIN: 421 setautogain(gspca_dev, ctrl->val); 422 break; 423 case V4L2_CID_JPEG_COMPRESSION_QUALITY: 424 jpeg_set_qual(sd->jpeg_hdr, ctrl->val); 425 setcamquality(gspca_dev, ctrl->val); 426 break; 427 } 428 return gspca_dev->usb_err; 429 } 430 431 static const struct v4l2_ctrl_ops sd_ctrl_ops = { 432 .s_ctrl = sd_s_ctrl, 433 }; 434 435 static int sd_init_controls(struct gspca_dev *gspca_dev) 436 { 437 struct sd *sd = (struct sd *)gspca_dev; 438 struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler; 439 static const struct v4l2_ctrl_config custom_autogain = { 440 .ops = &sd_ctrl_ops, 441 .id = V4L2_CID_AUTOGAIN, 442 .type = V4L2_CTRL_TYPE_INTEGER, 443 .name = "Automatic Gain (and Exposure)", 444 .max = 3, 445 .step = 1, 446 .def = 0, 447 }; 448 449 gspca_dev->vdev.ctrl_handler = hdl; 450 v4l2_ctrl_handler_init(hdl, 6); 451 sd->freq = v4l2_ctrl_new_std_menu(hdl, &sd_ctrl_ops, 452 V4L2_CID_POWER_LINE_FREQUENCY, 453 V4L2_CID_POWER_LINE_FREQUENCY_60HZ, 1, 454 V4L2_CID_POWER_LINE_FREQUENCY_60HZ); 455 v4l2_ctrl_new_custom(hdl, &custom_autogain, NULL); 456 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, 457 V4L2_CID_RED_BALANCE, 0, 3, 1, 2); 458 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, 459 V4L2_CID_GAIN, 0, 3, 1, 2); 460 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, 461 V4L2_CID_BLUE_BALANCE, 0, 3, 1, 2); 462 sd->jpegqual = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, 463 V4L2_CID_JPEG_COMPRESSION_QUALITY, 464 QUALITY_MIN, QUALITY_MAX, 1, QUALITY_DEF); 465 466 if (hdl->error) { 467 pr_err("Could not initialize controls\n"); 468 return hdl->error; 469 } 470 return 0; 471 } 472 473 static int sd_set_jcomp(struct gspca_dev *gspca_dev, 474 const struct v4l2_jpegcompression *jcomp) 475 { 476 struct sd *sd = (struct sd *) gspca_dev; 477 478 v4l2_ctrl_s_ctrl(sd->jpegqual, jcomp->quality); 479 return 0; 480 } 481 482 static int sd_get_jcomp(struct gspca_dev *gspca_dev, 483 struct v4l2_jpegcompression *jcomp) 484 { 485 struct sd *sd = (struct sd *) gspca_dev; 486 487 memset(jcomp, 0, sizeof *jcomp); 488 jcomp->quality = v4l2_ctrl_g_ctrl(sd->jpegqual); 489 jcomp->jpeg_markers = V4L2_JPEG_MARKER_DHT 490 | V4L2_JPEG_MARKER_DQT; 491 return 0; 492 } 493 494 495 /* sub-driver description */ 496 static const struct sd_desc sd_desc_sakar_57379 = { 497 .name = MODULE_NAME, 498 .config = sd_config, 499 .init = sd_init, 500 .start = sd_start, 501 .stopN = sd_stopN, 502 .pkt_scan = sd_pkt_scan, 503 }; 504 505 /* sub-driver description */ 506 static const struct sd_desc sd_desc_sportscam_dv15 = { 507 .name = MODULE_NAME, 508 .config = sd_config, 509 .init = sd_init, 510 .init_controls = sd_init_controls, 511 .start = sd_start, 512 .stopN = sd_stopN, 513 .pkt_scan = sd_pkt_scan, 514 .get_jcomp = sd_get_jcomp, 515 .set_jcomp = sd_set_jcomp, 516 }; 517 518 static const struct sd_desc *sd_desc[2] = { 519 &sd_desc_sakar_57379, 520 &sd_desc_sportscam_dv15 521 }; 522 523 /* -- device connect -- */ 524 static int sd_probe(struct usb_interface *intf, 525 const struct usb_device_id *id) 526 { 527 return gspca_dev_probe(intf, id, 528 sd_desc[id->driver_info], 529 sizeof(struct sd), 530 THIS_MODULE); 531 } 532 533 static struct usb_driver sd_driver = { 534 .name = MODULE_NAME, 535 .id_table = device_table, 536 .probe = sd_probe, 537 .disconnect = gspca_disconnect, 538 #ifdef CONFIG_PM 539 .suspend = gspca_suspend, 540 .resume = gspca_resume, 541 .reset_resume = gspca_resume, 542 #endif 543 }; 544 545 module_usb_driver(sd_driver); 546