| 1 | /* |
| 2 | * Syntek DV4000 (STK014) subdriver |
| 3 | * |
| 4 | * Copyright (C) 2008 Jean-Francois Moine (http://moinejf.free.fr) |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | |
| 21 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 22 | |
| 23 | #define MODULE_NAME "stk014" |
| 24 | |
| 25 | #include "gspca.h" |
| 26 | #include "jpeg.h" |
| 27 | |
| 28 | MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>"); |
| 29 | MODULE_DESCRIPTION("Syntek DV4000 (STK014) USB Camera Driver"); |
| 30 | MODULE_LICENSE("GPL"); |
| 31 | |
| 32 | #define QUALITY 50 |
| 33 | |
| 34 | /* specific webcam descriptor */ |
| 35 | struct sd { |
| 36 | struct gspca_dev gspca_dev; /* !! must be the first item */ |
| 37 | u8 jpeg_hdr[JPEG_HDR_SZ]; |
| 38 | }; |
| 39 | |
| 40 | static const struct v4l2_pix_format vga_mode[] = { |
| 41 | {320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, |
| 42 | .bytesperline = 320, |
| 43 | .sizeimage = 320 * 240 * 3 / 8 + 590, |
| 44 | .colorspace = V4L2_COLORSPACE_JPEG, |
| 45 | .priv = 1}, |
| 46 | {640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, |
| 47 | .bytesperline = 640, |
| 48 | .sizeimage = 640 * 480 * 3 / 8 + 590, |
| 49 | .colorspace = V4L2_COLORSPACE_JPEG, |
| 50 | .priv = 0}, |
| 51 | }; |
| 52 | |
| 53 | /* -- read a register -- */ |
| 54 | static u8 reg_r(struct gspca_dev *gspca_dev, |
| 55 | __u16 index) |
| 56 | { |
| 57 | struct usb_device *dev = gspca_dev->dev; |
| 58 | int ret; |
| 59 | |
| 60 | if (gspca_dev->usb_err < 0) |
| 61 | return 0; |
| 62 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), |
| 63 | 0x00, |
| 64 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 65 | 0x00, |
| 66 | index, |
| 67 | gspca_dev->usb_buf, 1, |
| 68 | 500); |
| 69 | if (ret < 0) { |
| 70 | pr_err("reg_r err %d\n", ret); |
| 71 | gspca_dev->usb_err = ret; |
| 72 | return 0; |
| 73 | } |
| 74 | return gspca_dev->usb_buf[0]; |
| 75 | } |
| 76 | |
| 77 | /* -- write a register -- */ |
| 78 | static void reg_w(struct gspca_dev *gspca_dev, |
| 79 | __u16 index, __u16 value) |
| 80 | { |
| 81 | struct usb_device *dev = gspca_dev->dev; |
| 82 | int ret; |
| 83 | |
| 84 | if (gspca_dev->usb_err < 0) |
| 85 | return; |
| 86 | ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
| 87 | 0x01, |
| 88 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 89 | value, |
| 90 | index, |
| 91 | NULL, |
| 92 | 0, |
| 93 | 500); |
| 94 | if (ret < 0) { |
| 95 | pr_err("reg_w err %d\n", ret); |
| 96 | gspca_dev->usb_err = ret; |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | /* -- get a bulk value (4 bytes) -- */ |
| 101 | static void rcv_val(struct gspca_dev *gspca_dev, |
| 102 | int ads) |
| 103 | { |
| 104 | struct usb_device *dev = gspca_dev->dev; |
| 105 | int alen, ret; |
| 106 | |
| 107 | reg_w(gspca_dev, 0x634, (ads >> 16) & 0xff); |
| 108 | reg_w(gspca_dev, 0x635, (ads >> 8) & 0xff); |
| 109 | reg_w(gspca_dev, 0x636, ads & 0xff); |
| 110 | reg_w(gspca_dev, 0x637, 0); |
| 111 | reg_w(gspca_dev, 0x638, 4); /* len & 0xff */ |
| 112 | reg_w(gspca_dev, 0x639, 0); /* len >> 8 */ |
| 113 | reg_w(gspca_dev, 0x63a, 0); |
| 114 | reg_w(gspca_dev, 0x63b, 0); |
| 115 | reg_w(gspca_dev, 0x630, 5); |
| 116 | if (gspca_dev->usb_err < 0) |
| 117 | return; |
| 118 | ret = usb_bulk_msg(dev, |
| 119 | usb_rcvbulkpipe(dev, 0x05), |
| 120 | gspca_dev->usb_buf, |
| 121 | 4, /* length */ |
| 122 | &alen, |
| 123 | 500); /* timeout in milliseconds */ |
| 124 | if (ret < 0) { |
| 125 | pr_err("rcv_val err %d\n", ret); |
| 126 | gspca_dev->usb_err = ret; |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | /* -- send a bulk value -- */ |
| 131 | static void snd_val(struct gspca_dev *gspca_dev, |
| 132 | int ads, |
| 133 | unsigned int val) |
| 134 | { |
| 135 | struct usb_device *dev = gspca_dev->dev; |
| 136 | int alen, ret; |
| 137 | __u8 seq = 0; |
| 138 | |
| 139 | if (ads == 0x003f08) { |
| 140 | reg_r(gspca_dev, 0x0704); |
| 141 | seq = reg_r(gspca_dev, 0x0705); |
| 142 | reg_r(gspca_dev, 0x0650); |
| 143 | reg_w(gspca_dev, 0x654, seq); |
| 144 | } else { |
| 145 | reg_w(gspca_dev, 0x654, (ads >> 16) & 0xff); |
| 146 | } |
| 147 | reg_w(gspca_dev, 0x655, (ads >> 8) & 0xff); |
| 148 | reg_w(gspca_dev, 0x656, ads & 0xff); |
| 149 | reg_w(gspca_dev, 0x657, 0); |
| 150 | reg_w(gspca_dev, 0x658, 0x04); /* size */ |
| 151 | reg_w(gspca_dev, 0x659, 0); |
| 152 | reg_w(gspca_dev, 0x65a, 0); |
| 153 | reg_w(gspca_dev, 0x65b, 0); |
| 154 | reg_w(gspca_dev, 0x650, 5); |
| 155 | if (gspca_dev->usb_err < 0) |
| 156 | return; |
| 157 | gspca_dev->usb_buf[0] = val >> 24; |
| 158 | gspca_dev->usb_buf[1] = val >> 16; |
| 159 | gspca_dev->usb_buf[2] = val >> 8; |
| 160 | gspca_dev->usb_buf[3] = val; |
| 161 | ret = usb_bulk_msg(dev, |
| 162 | usb_sndbulkpipe(dev, 6), |
| 163 | gspca_dev->usb_buf, |
| 164 | 4, |
| 165 | &alen, |
| 166 | 500); /* timeout in milliseconds */ |
| 167 | if (ret < 0) { |
| 168 | pr_err("snd_val err %d\n", ret); |
| 169 | gspca_dev->usb_err = ret; |
| 170 | } else { |
| 171 | if (ads == 0x003f08) { |
| 172 | seq += 4; |
| 173 | seq &= 0x3f; |
| 174 | reg_w(gspca_dev, 0x705, seq); |
| 175 | } |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | /* set a camera parameter */ |
| 180 | static void set_par(struct gspca_dev *gspca_dev, |
| 181 | int parval) |
| 182 | { |
| 183 | snd_val(gspca_dev, 0x003f08, parval); |
| 184 | } |
| 185 | |
| 186 | static void setbrightness(struct gspca_dev *gspca_dev, s32 val) |
| 187 | { |
| 188 | int parval; |
| 189 | |
| 190 | parval = 0x06000000 /* whiteness */ |
| 191 | + (val << 16); |
| 192 | set_par(gspca_dev, parval); |
| 193 | } |
| 194 | |
| 195 | static void setcontrast(struct gspca_dev *gspca_dev, s32 val) |
| 196 | { |
| 197 | int parval; |
| 198 | |
| 199 | parval = 0x07000000 /* contrast */ |
| 200 | + (val << 16); |
| 201 | set_par(gspca_dev, parval); |
| 202 | } |
| 203 | |
| 204 | static void setcolors(struct gspca_dev *gspca_dev, s32 val) |
| 205 | { |
| 206 | int parval; |
| 207 | |
| 208 | parval = 0x08000000 /* saturation */ |
| 209 | + (val << 16); |
| 210 | set_par(gspca_dev, parval); |
| 211 | } |
| 212 | |
| 213 | static void setlightfreq(struct gspca_dev *gspca_dev, s32 val) |
| 214 | { |
| 215 | set_par(gspca_dev, val == 1 |
| 216 | ? 0x33640000 /* 50 Hz */ |
| 217 | : 0x33780000); /* 60 Hz */ |
| 218 | } |
| 219 | |
| 220 | /* this function is called at probe time */ |
| 221 | static int sd_config(struct gspca_dev *gspca_dev, |
| 222 | const struct usb_device_id *id) |
| 223 | { |
| 224 | gspca_dev->cam.cam_mode = vga_mode; |
| 225 | gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode); |
| 226 | return 0; |
| 227 | } |
| 228 | |
| 229 | /* this function is called at probe and resume time */ |
| 230 | static int sd_init(struct gspca_dev *gspca_dev) |
| 231 | { |
| 232 | u8 ret; |
| 233 | |
| 234 | /* check if the device responds */ |
| 235 | usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1); |
| 236 | ret = reg_r(gspca_dev, 0x0740); |
| 237 | if (gspca_dev->usb_err >= 0) { |
| 238 | if (ret != 0xff) { |
| 239 | pr_err("init reg: 0x%02x\n", ret); |
| 240 | gspca_dev->usb_err = -EIO; |
| 241 | } |
| 242 | } |
| 243 | return gspca_dev->usb_err; |
| 244 | } |
| 245 | |
| 246 | /* -- start the camera -- */ |
| 247 | static int sd_start(struct gspca_dev *gspca_dev) |
| 248 | { |
| 249 | struct sd *sd = (struct sd *) gspca_dev; |
| 250 | int ret, value; |
| 251 | |
| 252 | /* create the JPEG header */ |
| 253 | jpeg_define(sd->jpeg_hdr, gspca_dev->pixfmt.height, |
| 254 | gspca_dev->pixfmt.width, |
| 255 | 0x22); /* JPEG 411 */ |
| 256 | jpeg_set_qual(sd->jpeg_hdr, QUALITY); |
| 257 | |
| 258 | /* work on alternate 1 */ |
| 259 | usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1); |
| 260 | |
| 261 | set_par(gspca_dev, 0x10000000); |
| 262 | set_par(gspca_dev, 0x00000000); |
| 263 | set_par(gspca_dev, 0x8002e001); |
| 264 | set_par(gspca_dev, 0x14000000); |
| 265 | if (gspca_dev->pixfmt.width > 320) |
| 266 | value = 0x8002e001; /* 640x480 */ |
| 267 | else |
| 268 | value = 0x4001f000; /* 320x240 */ |
| 269 | set_par(gspca_dev, value); |
| 270 | ret = usb_set_interface(gspca_dev->dev, |
| 271 | gspca_dev->iface, |
| 272 | gspca_dev->alt); |
| 273 | if (ret < 0) { |
| 274 | pr_err("set intf %d %d failed\n", |
| 275 | gspca_dev->iface, gspca_dev->alt); |
| 276 | gspca_dev->usb_err = ret; |
| 277 | goto out; |
| 278 | } |
| 279 | reg_r(gspca_dev, 0x0630); |
| 280 | rcv_val(gspca_dev, 0x000020); /* << (value ff ff ff ff) */ |
| 281 | reg_r(gspca_dev, 0x0650); |
| 282 | snd_val(gspca_dev, 0x000020, 0xffffffff); |
| 283 | reg_w(gspca_dev, 0x0620, 0); |
| 284 | reg_w(gspca_dev, 0x0630, 0); |
| 285 | reg_w(gspca_dev, 0x0640, 0); |
| 286 | reg_w(gspca_dev, 0x0650, 0); |
| 287 | reg_w(gspca_dev, 0x0660, 0); |
| 288 | set_par(gspca_dev, 0x09800000); /* Red ? */ |
| 289 | set_par(gspca_dev, 0x0a800000); /* Green ? */ |
| 290 | set_par(gspca_dev, 0x0b800000); /* Blue ? */ |
| 291 | set_par(gspca_dev, 0x0d030000); /* Gamma ? */ |
| 292 | |
| 293 | /* start the video flow */ |
| 294 | set_par(gspca_dev, 0x01000000); |
| 295 | set_par(gspca_dev, 0x01000000); |
| 296 | if (gspca_dev->usb_err >= 0) |
| 297 | PDEBUG(D_STREAM, "camera started alt: 0x%02x", |
| 298 | gspca_dev->alt); |
| 299 | out: |
| 300 | return gspca_dev->usb_err; |
| 301 | } |
| 302 | |
| 303 | static void sd_stopN(struct gspca_dev *gspca_dev) |
| 304 | { |
| 305 | struct usb_device *dev = gspca_dev->dev; |
| 306 | |
| 307 | set_par(gspca_dev, 0x02000000); |
| 308 | set_par(gspca_dev, 0x02000000); |
| 309 | usb_set_interface(dev, gspca_dev->iface, 1); |
| 310 | reg_r(gspca_dev, 0x0630); |
| 311 | rcv_val(gspca_dev, 0x000020); /* << (value ff ff ff ff) */ |
| 312 | reg_r(gspca_dev, 0x0650); |
| 313 | snd_val(gspca_dev, 0x000020, 0xffffffff); |
| 314 | reg_w(gspca_dev, 0x0620, 0); |
| 315 | reg_w(gspca_dev, 0x0630, 0); |
| 316 | reg_w(gspca_dev, 0x0640, 0); |
| 317 | reg_w(gspca_dev, 0x0650, 0); |
| 318 | reg_w(gspca_dev, 0x0660, 0); |
| 319 | PDEBUG(D_STREAM, "camera stopped"); |
| 320 | } |
| 321 | |
| 322 | static void sd_pkt_scan(struct gspca_dev *gspca_dev, |
| 323 | u8 *data, /* isoc packet */ |
| 324 | int len) /* iso packet length */ |
| 325 | { |
| 326 | struct sd *sd = (struct sd *) gspca_dev; |
| 327 | static unsigned char ffd9[] = {0xff, 0xd9}; |
| 328 | |
| 329 | /* a frame starts with: |
| 330 | * - 0xff 0xfe |
| 331 | * - 0x08 0x00 - length (little endian ?!) |
| 332 | * - 4 bytes = size of whole frame (BE - including header) |
| 333 | * - 0x00 0x0c |
| 334 | * - 0xff 0xd8 |
| 335 | * - .. JPEG image with escape sequences (ff 00) |
| 336 | * (without ending - ff d9) |
| 337 | */ |
| 338 | if (data[0] == 0xff && data[1] == 0xfe) { |
| 339 | gspca_frame_add(gspca_dev, LAST_PACKET, |
| 340 | ffd9, 2); |
| 341 | |
| 342 | /* put the JPEG 411 header */ |
| 343 | gspca_frame_add(gspca_dev, FIRST_PACKET, |
| 344 | sd->jpeg_hdr, JPEG_HDR_SZ); |
| 345 | |
| 346 | /* beginning of the frame */ |
| 347 | #define STKHDRSZ 12 |
| 348 | data += STKHDRSZ; |
| 349 | len -= STKHDRSZ; |
| 350 | } |
| 351 | gspca_frame_add(gspca_dev, INTER_PACKET, data, len); |
| 352 | } |
| 353 | |
| 354 | static int sd_s_ctrl(struct v4l2_ctrl *ctrl) |
| 355 | { |
| 356 | struct gspca_dev *gspca_dev = |
| 357 | container_of(ctrl->handler, struct gspca_dev, ctrl_handler); |
| 358 | |
| 359 | gspca_dev->usb_err = 0; |
| 360 | |
| 361 | if (!gspca_dev->streaming) |
| 362 | return 0; |
| 363 | |
| 364 | switch (ctrl->id) { |
| 365 | case V4L2_CID_BRIGHTNESS: |
| 366 | setbrightness(gspca_dev, ctrl->val); |
| 367 | break; |
| 368 | case V4L2_CID_CONTRAST: |
| 369 | setcontrast(gspca_dev, ctrl->val); |
| 370 | break; |
| 371 | case V4L2_CID_SATURATION: |
| 372 | setcolors(gspca_dev, ctrl->val); |
| 373 | break; |
| 374 | case V4L2_CID_POWER_LINE_FREQUENCY: |
| 375 | setlightfreq(gspca_dev, ctrl->val); |
| 376 | break; |
| 377 | } |
| 378 | return gspca_dev->usb_err; |
| 379 | } |
| 380 | |
| 381 | static const struct v4l2_ctrl_ops sd_ctrl_ops = { |
| 382 | .s_ctrl = sd_s_ctrl, |
| 383 | }; |
| 384 | |
| 385 | static int sd_init_controls(struct gspca_dev *gspca_dev) |
| 386 | { |
| 387 | struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler; |
| 388 | |
| 389 | gspca_dev->vdev.ctrl_handler = hdl; |
| 390 | v4l2_ctrl_handler_init(hdl, 4); |
| 391 | v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, |
| 392 | V4L2_CID_BRIGHTNESS, 0, 255, 1, 127); |
| 393 | v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, |
| 394 | V4L2_CID_CONTRAST, 0, 255, 1, 127); |
| 395 | v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, |
| 396 | V4L2_CID_SATURATION, 0, 255, 1, 127); |
| 397 | v4l2_ctrl_new_std_menu(hdl, &sd_ctrl_ops, |
| 398 | V4L2_CID_POWER_LINE_FREQUENCY, |
| 399 | V4L2_CID_POWER_LINE_FREQUENCY_60HZ, 1, |
| 400 | V4L2_CID_POWER_LINE_FREQUENCY_50HZ); |
| 401 | |
| 402 | if (hdl->error) { |
| 403 | pr_err("Could not initialize controls\n"); |
| 404 | return hdl->error; |
| 405 | } |
| 406 | return 0; |
| 407 | } |
| 408 | |
| 409 | /* sub-driver description */ |
| 410 | static const struct sd_desc sd_desc = { |
| 411 | .name = MODULE_NAME, |
| 412 | .config = sd_config, |
| 413 | .init = sd_init, |
| 414 | .init_controls = sd_init_controls, |
| 415 | .start = sd_start, |
| 416 | .stopN = sd_stopN, |
| 417 | .pkt_scan = sd_pkt_scan, |
| 418 | }; |
| 419 | |
| 420 | /* -- module initialisation -- */ |
| 421 | static const struct usb_device_id device_table[] = { |
| 422 | {USB_DEVICE(0x05e1, 0x0893)}, |
| 423 | {} |
| 424 | }; |
| 425 | MODULE_DEVICE_TABLE(usb, device_table); |
| 426 | |
| 427 | /* -- device connect -- */ |
| 428 | static int sd_probe(struct usb_interface *intf, |
| 429 | const struct usb_device_id *id) |
| 430 | { |
| 431 | return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd), |
| 432 | THIS_MODULE); |
| 433 | } |
| 434 | |
| 435 | static struct usb_driver sd_driver = { |
| 436 | .name = MODULE_NAME, |
| 437 | .id_table = device_table, |
| 438 | .probe = sd_probe, |
| 439 | .disconnect = gspca_disconnect, |
| 440 | #ifdef CONFIG_PM |
| 441 | .suspend = gspca_suspend, |
| 442 | .resume = gspca_resume, |
| 443 | .reset_resume = gspca_resume, |
| 444 | #endif |
| 445 | }; |
| 446 | |
| 447 | module_usb_driver(sd_driver); |