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 * You should have received a copy of the GNU General Public License 23 * along with this program; if not, write to the Free Software 24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 25 */ 26 27#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 28 29#define MODULE_NAME "jeilinj" 30 31#include <linux/slab.h> 32#include "gspca.h" 33#include "jpeg.h" 34 35MODULE_AUTHOR("Theodore Kilgore <kilgota@auburn.edu>"); 36MODULE_DESCRIPTION("GSPCA/JEILINJ USB Camera Driver"); 37MODULE_LICENSE("GPL"); 38 39/* Default timeouts, in ms */ 40#define JEILINJ_CMD_TIMEOUT 500 41#define JEILINJ_CMD_DELAY 160 42#define JEILINJ_DATA_TIMEOUT 1000 43 44/* Maximum transfer size to use. */ 45#define JEILINJ_MAX_TRANSFER 0x200 46#define FRAME_HEADER_LEN 0x10 47#define FRAME_START 0xFFFFFFFF 48 49enum { 50 SAKAR_57379, 51 SPORTSCAM_DV15, 52}; 53 54#define CAMQUALITY_MIN 0 /* highest cam quality */ 55#define CAMQUALITY_MAX 97 /* lowest cam quality */ 56 57/* Structure to hold all of our device specific stuff */ 58struct sd { 59 struct gspca_dev gspca_dev; /* !! must be the first item */ 60 int blocks_left; 61 const struct v4l2_pix_format *cap_mode; 62 struct v4l2_ctrl *freq; 63 struct v4l2_ctrl *jpegqual; 64 /* Driver stuff */ 65 u8 type; 66 u8 quality; /* image quality */ 67#define QUALITY_MIN 35 68#define QUALITY_MAX 85 69#define QUALITY_DEF 85 70 u8 jpeg_hdr[JPEG_HDR_SZ]; 71}; 72 73struct jlj_command { 74 unsigned char instruction[2]; 75 unsigned char ack_wanted; 76 unsigned char delay; 77}; 78 79/* AFAICT these cameras will only do 320x240. */ 80static struct v4l2_pix_format jlj_mode[] = { 81 { 320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, 82 .bytesperline = 320, 83 .sizeimage = 320 * 240, 84 .colorspace = V4L2_COLORSPACE_JPEG, 85 .priv = 0}, 86 { 640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, 87 .bytesperline = 640, 88 .sizeimage = 640 * 480, 89 .colorspace = V4L2_COLORSPACE_JPEG, 90 .priv = 0} 91}; 92 93/* 94 * cam uses endpoint 0x03 to send commands, 0x84 for read commands, 95 * and 0x82 for bulk transfer. 96 */ 97 98/* All commands are two bytes only */ 99static void jlj_write2(struct gspca_dev *gspca_dev, unsigned char *command) 100{ 101 int retval; 102 103 if (gspca_dev->usb_err < 0) 104 return; 105 memcpy(gspca_dev->usb_buf, command, 2); 106 retval = usb_bulk_msg(gspca_dev->dev, 107 usb_sndbulkpipe(gspca_dev->dev, 3), 108 gspca_dev->usb_buf, 2, NULL, 500); 109 if (retval < 0) { 110 pr_err("command write [%02x] error %d\n", 111 gspca_dev->usb_buf[0], retval); 112 gspca_dev->usb_err = retval; 113 } 114} 115 116/* Responses are one byte only */ 117static void jlj_read1(struct gspca_dev *gspca_dev, unsigned char *response) 118{ 119 int retval; 120 121 if (gspca_dev->usb_err < 0) 122 return; 123 retval = usb_bulk_msg(gspca_dev->dev, 124 usb_rcvbulkpipe(gspca_dev->dev, 0x84), 125 gspca_dev->usb_buf, 1, NULL, 500); 126 *response = gspca_dev->usb_buf[0]; 127 if (retval < 0) { 128 pr_err("read command [%02x] error %d\n", 129 gspca_dev->usb_buf[0], retval); 130 gspca_dev->usb_err = retval; 131 } 132} 133 134static void setfreq(struct gspca_dev *gspca_dev, s32 val) 135{ 136 u8 freq_commands[][2] = { 137 {0x71, 0x80}, 138 {0x70, 0x07} 139 }; 140 141 freq_commands[0][1] |= val >> 1; 142 143 jlj_write2(gspca_dev, freq_commands[0]); 144 jlj_write2(gspca_dev, freq_commands[1]); 145} 146 147static void setcamquality(struct gspca_dev *gspca_dev, s32 val) 148{ 149 u8 quality_commands[][2] = { 150 {0x71, 0x1E}, 151 {0x70, 0x06} 152 }; 153 u8 camquality; 154 155 /* adapt camera quality from jpeg quality */ 156 camquality = ((QUALITY_MAX - val) * CAMQUALITY_MAX) 157 / (QUALITY_MAX - QUALITY_MIN); 158 quality_commands[0][1] += camquality; 159 160 jlj_write2(gspca_dev, quality_commands[0]); 161 jlj_write2(gspca_dev, quality_commands[1]); 162} 163 164static void setautogain(struct gspca_dev *gspca_dev, s32 val) 165{ 166 u8 autogain_commands[][2] = { 167 {0x94, 0x02}, 168 {0xcf, 0x00} 169 }; 170 171 autogain_commands[1][1] = val << 4; 172 173 jlj_write2(gspca_dev, autogain_commands[0]); 174 jlj_write2(gspca_dev, autogain_commands[1]); 175} 176 177static void setred(struct gspca_dev *gspca_dev, s32 val) 178{ 179 u8 setred_commands[][2] = { 180 {0x94, 0x02}, 181 {0xe6, 0x00} 182 }; 183 184 setred_commands[1][1] = val; 185 186 jlj_write2(gspca_dev, setred_commands[0]); 187 jlj_write2(gspca_dev, setred_commands[1]); 188} 189 190static void setgreen(struct gspca_dev *gspca_dev, s32 val) 191{ 192 u8 setgreen_commands[][2] = { 193 {0x94, 0x02}, 194 {0xe7, 0x00} 195 }; 196 197 setgreen_commands[1][1] = val; 198 199 jlj_write2(gspca_dev, setgreen_commands[0]); 200 jlj_write2(gspca_dev, setgreen_commands[1]); 201} 202 203static void setblue(struct gspca_dev *gspca_dev, s32 val) 204{ 205 u8 setblue_commands[][2] = { 206 {0x94, 0x02}, 207 {0xe9, 0x00} 208 }; 209 210 setblue_commands[1][1] = val; 211 212 jlj_write2(gspca_dev, setblue_commands[0]); 213 jlj_write2(gspca_dev, setblue_commands[1]); 214} 215 216static int jlj_start(struct gspca_dev *gspca_dev) 217{ 218 int i; 219 int start_commands_size; 220 u8 response = 0xff; 221 struct sd *sd = (struct sd *) gspca_dev; 222 struct jlj_command start_commands[] = { 223 {{0x71, 0x81}, 0, 0}, 224 {{0x70, 0x05}, 0, JEILINJ_CMD_DELAY}, 225 {{0x95, 0x70}, 1, 0}, 226 {{0x71, 0x81 - gspca_dev->curr_mode}, 0, 0}, 227 {{0x70, 0x04}, 0, JEILINJ_CMD_DELAY}, 228 {{0x95, 0x70}, 1, 0}, 229 {{0x71, 0x00}, 0, 0}, /* start streaming ??*/ 230 {{0x70, 0x08}, 0, JEILINJ_CMD_DELAY}, 231 {{0x95, 0x70}, 1, 0}, 232#define SPORTSCAM_DV15_CMD_SIZE 9 233 {{0x94, 0x02}, 0, 0}, 234 {{0xde, 0x24}, 0, 0}, 235 {{0x94, 0x02}, 0, 0}, 236 {{0xdd, 0xf0}, 0, 0}, 237 {{0x94, 0x02}, 0, 0}, 238 {{0xe3, 0x2c}, 0, 0}, 239 {{0x94, 0x02}, 0, 0}, 240 {{0xe4, 0x00}, 0, 0}, 241 {{0x94, 0x02}, 0, 0}, 242 {{0xe5, 0x00}, 0, 0}, 243 {{0x94, 0x02}, 0, 0}, 244 {{0xe6, 0x2c}, 0, 0}, 245 {{0x94, 0x03}, 0, 0}, 246 {{0xaa, 0x00}, 0, 0} 247 }; 248 249 sd->blocks_left = 0; 250 /* Under Windows, USB spy shows that only the 9 first start 251 * commands are used for SPORTSCAM_DV15 webcam 252 */ 253 if (sd->type == SPORTSCAM_DV15) 254 start_commands_size = SPORTSCAM_DV15_CMD_SIZE; 255 else 256 start_commands_size = ARRAY_SIZE(start_commands); 257 258 for (i = 0; i < start_commands_size; i++) { 259 jlj_write2(gspca_dev, start_commands[i].instruction); 260 if (start_commands[i].delay) 261 msleep(start_commands[i].delay); 262 if (start_commands[i].ack_wanted) 263 jlj_read1(gspca_dev, &response); 264 } 265 setcamquality(gspca_dev, v4l2_ctrl_g_ctrl(sd->jpegqual)); 266 msleep(2); 267 setfreq(gspca_dev, v4l2_ctrl_g_ctrl(sd->freq)); 268 if (gspca_dev->usb_err < 0) 269 PERR("Start streaming command failed"); 270 return gspca_dev->usb_err; 271} 272 273static void sd_pkt_scan(struct gspca_dev *gspca_dev, 274 u8 *data, int len) 275{ 276 struct sd *sd = (struct sd *) gspca_dev; 277 int packet_type; 278 u32 header_marker; 279 280 PDEBUG(D_STREAM, "Got %d bytes out of %d for Block 0", 281 len, JEILINJ_MAX_TRANSFER); 282 if (len != JEILINJ_MAX_TRANSFER) { 283 PDEBUG(D_PACK, "bad length"); 284 goto discard; 285 } 286 /* check if it's start of frame */ 287 header_marker = ((u32 *)data)[0]; 288 if (header_marker == FRAME_START) { 289 sd->blocks_left = data[0x0a] - 1; 290 PDEBUG(D_STREAM, "blocks_left = 0x%x", sd->blocks_left); 291 /* Start a new frame, and add the JPEG header, first thing */ 292 gspca_frame_add(gspca_dev, FIRST_PACKET, 293 sd->jpeg_hdr, JPEG_HDR_SZ); 294 /* Toss line 0 of data block 0, keep the rest. */ 295 gspca_frame_add(gspca_dev, INTER_PACKET, 296 data + FRAME_HEADER_LEN, 297 JEILINJ_MAX_TRANSFER - FRAME_HEADER_LEN); 298 } else if (sd->blocks_left > 0) { 299 PDEBUG(D_STREAM, "%d blocks remaining for frame", 300 sd->blocks_left); 301 sd->blocks_left -= 1; 302 if (sd->blocks_left == 0) 303 packet_type = LAST_PACKET; 304 else 305 packet_type = INTER_PACKET; 306 gspca_frame_add(gspca_dev, packet_type, 307 data, JEILINJ_MAX_TRANSFER); 308 } else 309 goto discard; 310 return; 311discard: 312 /* Discard data until a new frame starts. */ 313 gspca_dev->last_packet_type = DISCARD_PACKET; 314} 315 316/* This function is called at probe time just before sd_init */ 317static int sd_config(struct gspca_dev *gspca_dev, 318 const struct usb_device_id *id) 319{ 320 struct cam *cam = &gspca_dev->cam; 321 struct sd *dev = (struct sd *) gspca_dev; 322 323 dev->type = id->driver_info; 324 dev->quality = QUALITY_DEF; 325 326 cam->cam_mode = jlj_mode; 327 cam->nmodes = ARRAY_SIZE(jlj_mode); 328 cam->bulk = 1; 329 cam->bulk_nurbs = 1; 330 cam->bulk_size = JEILINJ_MAX_TRANSFER; 331 return 0; 332} 333 334static void sd_stopN(struct gspca_dev *gspca_dev) 335{ 336 int i; 337 u8 *buf; 338 static u8 stop_commands[][2] = { 339 {0x71, 0x00}, 340 {0x70, 0x09}, 341 {0x71, 0x80}, 342 {0x70, 0x05} 343 }; 344 345 for (;;) { 346 /* get the image remaining blocks */ 347 usb_bulk_msg(gspca_dev->dev, 348 gspca_dev->urb[0]->pipe, 349 gspca_dev->urb[0]->transfer_buffer, 350 JEILINJ_MAX_TRANSFER, NULL, 351 JEILINJ_DATA_TIMEOUT); 352 353 /* search for 0xff 0xd9 (EOF for JPEG) */ 354 i = 0; 355 buf = gspca_dev->urb[0]->transfer_buffer; 356 while ((i < (JEILINJ_MAX_TRANSFER - 1)) && 357 ((buf[i] != 0xff) || (buf[i+1] != 0xd9))) 358 i++; 359 360 if (i != (JEILINJ_MAX_TRANSFER - 1)) 361 /* last remaining block found */ 362 break; 363 } 364 365 for (i = 0; i < ARRAY_SIZE(stop_commands); i++) 366 jlj_write2(gspca_dev, stop_commands[i]); 367} 368 369/* this function is called at probe and resume time */ 370static int sd_init(struct gspca_dev *gspca_dev) 371{ 372 return gspca_dev->usb_err; 373} 374 375/* Set up for getting frames. */ 376static int sd_start(struct gspca_dev *gspca_dev) 377{ 378 struct sd *dev = (struct sd *) gspca_dev; 379 380 /* create the JPEG header */ 381 jpeg_define(dev->jpeg_hdr, gspca_dev->pixfmt.height, 382 gspca_dev->pixfmt.width, 383 0x21); /* JPEG 422 */ 384 jpeg_set_qual(dev->jpeg_hdr, dev->quality); 385 PDEBUG(D_STREAM, "Start streaming at %dx%d", 386 gspca_dev->pixfmt.height, gspca_dev->pixfmt.width); 387 jlj_start(gspca_dev); 388 return gspca_dev->usb_err; 389} 390 391/* Table of supported USB devices */ 392static const struct usb_device_id device_table[] = { 393 {USB_DEVICE(0x0979, 0x0280), .driver_info = SAKAR_57379}, 394 {USB_DEVICE(0x0979, 0x0270), .driver_info = SPORTSCAM_DV15}, 395 {} 396}; 397 398MODULE_DEVICE_TABLE(usb, device_table); 399 400static int sd_s_ctrl(struct v4l2_ctrl *ctrl) 401{ 402 struct gspca_dev *gspca_dev = 403 container_of(ctrl->handler, struct gspca_dev, ctrl_handler); 404 struct sd *sd = (struct sd *)gspca_dev; 405 406 gspca_dev->usb_err = 0; 407 408 if (!gspca_dev->streaming) 409 return 0; 410 411 switch (ctrl->id) { 412 case V4L2_CID_POWER_LINE_FREQUENCY: 413 setfreq(gspca_dev, ctrl->val); 414 break; 415 case V4L2_CID_RED_BALANCE: 416 setred(gspca_dev, ctrl->val); 417 break; 418 case V4L2_CID_GAIN: 419 setgreen(gspca_dev, ctrl->val); 420 break; 421 case V4L2_CID_BLUE_BALANCE: 422 setblue(gspca_dev, ctrl->val); 423 break; 424 case V4L2_CID_AUTOGAIN: 425 setautogain(gspca_dev, ctrl->val); 426 break; 427 case V4L2_CID_JPEG_COMPRESSION_QUALITY: 428 jpeg_set_qual(sd->jpeg_hdr, ctrl->val); 429 setcamquality(gspca_dev, ctrl->val); 430 break; 431 } 432 return gspca_dev->usb_err; 433} 434 435static const struct v4l2_ctrl_ops sd_ctrl_ops = { 436 .s_ctrl = sd_s_ctrl, 437}; 438 439static int sd_init_controls(struct gspca_dev *gspca_dev) 440{ 441 struct sd *sd = (struct sd *)gspca_dev; 442 struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler; 443 static const struct v4l2_ctrl_config custom_autogain = { 444 .ops = &sd_ctrl_ops, 445 .id = V4L2_CID_AUTOGAIN, 446 .type = V4L2_CTRL_TYPE_INTEGER, 447 .name = "Automatic Gain (and Exposure)", 448 .max = 3, 449 .step = 1, 450 .def = 0, 451 }; 452 453 gspca_dev->vdev.ctrl_handler = hdl; 454 v4l2_ctrl_handler_init(hdl, 6); 455 sd->freq = v4l2_ctrl_new_std_menu(hdl, &sd_ctrl_ops, 456 V4L2_CID_POWER_LINE_FREQUENCY, 457 V4L2_CID_POWER_LINE_FREQUENCY_60HZ, 1, 458 V4L2_CID_POWER_LINE_FREQUENCY_60HZ); 459 v4l2_ctrl_new_custom(hdl, &custom_autogain, NULL); 460 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, 461 V4L2_CID_RED_BALANCE, 0, 3, 1, 2); 462 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, 463 V4L2_CID_GAIN, 0, 3, 1, 2); 464 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, 465 V4L2_CID_BLUE_BALANCE, 0, 3, 1, 2); 466 sd->jpegqual = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, 467 V4L2_CID_JPEG_COMPRESSION_QUALITY, 468 QUALITY_MIN, QUALITY_MAX, 1, QUALITY_DEF); 469 470 if (hdl->error) { 471 pr_err("Could not initialize controls\n"); 472 return hdl->error; 473 } 474 return 0; 475} 476 477static int sd_set_jcomp(struct gspca_dev *gspca_dev, 478 const struct v4l2_jpegcompression *jcomp) 479{ 480 struct sd *sd = (struct sd *) gspca_dev; 481 482 v4l2_ctrl_s_ctrl(sd->jpegqual, jcomp->quality); 483 return 0; 484} 485 486static int sd_get_jcomp(struct gspca_dev *gspca_dev, 487 struct v4l2_jpegcompression *jcomp) 488{ 489 struct sd *sd = (struct sd *) gspca_dev; 490 491 memset(jcomp, 0, sizeof *jcomp); 492 jcomp->quality = v4l2_ctrl_g_ctrl(sd->jpegqual); 493 jcomp->jpeg_markers = V4L2_JPEG_MARKER_DHT 494 | V4L2_JPEG_MARKER_DQT; 495 return 0; 496} 497 498 499/* sub-driver description */ 500static const struct sd_desc sd_desc_sakar_57379 = { 501 .name = MODULE_NAME, 502 .config = sd_config, 503 .init = sd_init, 504 .start = sd_start, 505 .stopN = sd_stopN, 506 .pkt_scan = sd_pkt_scan, 507}; 508 509/* sub-driver description */ 510static const struct sd_desc sd_desc_sportscam_dv15 = { 511 .name = MODULE_NAME, 512 .config = sd_config, 513 .init = sd_init, 514 .init_controls = sd_init_controls, 515 .start = sd_start, 516 .stopN = sd_stopN, 517 .pkt_scan = sd_pkt_scan, 518 .get_jcomp = sd_get_jcomp, 519 .set_jcomp = sd_set_jcomp, 520}; 521 522static const struct sd_desc *sd_desc[2] = { 523 &sd_desc_sakar_57379, 524 &sd_desc_sportscam_dv15 525}; 526 527/* -- device connect -- */ 528static int sd_probe(struct usb_interface *intf, 529 const struct usb_device_id *id) 530{ 531 return gspca_dev_probe(intf, id, 532 sd_desc[id->driver_info], 533 sizeof(struct sd), 534 THIS_MODULE); 535} 536 537static struct usb_driver sd_driver = { 538 .name = MODULE_NAME, 539 .id_table = device_table, 540 .probe = sd_probe, 541 .disconnect = gspca_disconnect, 542#ifdef CONFIG_PM 543 .suspend = gspca_suspend, 544 .resume = gspca_resume, 545 .reset_resume = gspca_resume, 546#endif 547}; 548 549module_usb_driver(sd_driver); 550