1 /* 2 * spca1528 subdriver 3 * 4 * Copyright (C) 2010-2011 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 "spca1528" 24 25 #include "gspca.h" 26 #include "jpeg.h" 27 28 MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>"); 29 MODULE_DESCRIPTION("SPCA1528 USB Camera Driver"); 30 MODULE_LICENSE("GPL"); 31 32 /* specific webcam descriptor */ 33 struct sd { 34 struct gspca_dev gspca_dev; /* !! must be the first item */ 35 36 u8 pkt_seq; 37 38 u8 jpeg_hdr[JPEG_HDR_SZ]; 39 }; 40 41 static const struct v4l2_pix_format vga_mode[] = { 42 /* (does not work correctly) 43 {176, 144, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, 44 .bytesperline = 176, 45 .sizeimage = 176 * 144 * 5 / 8 + 590, 46 .colorspace = V4L2_COLORSPACE_JPEG, 47 .priv = 3}, 48 */ 49 {320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, 50 .bytesperline = 320, 51 .sizeimage = 320 * 240 * 4 / 8 + 590, 52 .colorspace = V4L2_COLORSPACE_JPEG, 53 .priv = 2}, 54 {640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, 55 .bytesperline = 640, 56 .sizeimage = 640 * 480 * 3 / 8 + 590, 57 .colorspace = V4L2_COLORSPACE_JPEG, 58 .priv = 1}, 59 }; 60 61 /* read <len> bytes to gspca usb_buf */ 62 static void reg_r(struct gspca_dev *gspca_dev, 63 u8 req, 64 u16 index, 65 int len) 66 { 67 #if USB_BUF_SZ < 64 68 #error "USB buffer too small" 69 #endif 70 struct usb_device *dev = gspca_dev->dev; 71 int ret; 72 73 if (gspca_dev->usb_err < 0) 74 return; 75 ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 76 req, 77 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 78 0x0000, /* value */ 79 index, 80 gspca_dev->usb_buf, len, 81 500); 82 PDEBUG(D_USBI, "GET %02x 0000 %04x %02x", req, index, 83 gspca_dev->usb_buf[0]); 84 if (ret < 0) { 85 pr_err("reg_r err %d\n", ret); 86 gspca_dev->usb_err = ret; 87 } 88 } 89 90 static void reg_w(struct gspca_dev *gspca_dev, 91 u8 req, 92 u16 value, 93 u16 index) 94 { 95 struct usb_device *dev = gspca_dev->dev; 96 int ret; 97 98 if (gspca_dev->usb_err < 0) 99 return; 100 PDEBUG(D_USBO, "SET %02x %04x %04x", req, value, index); 101 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 102 req, 103 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 104 value, index, 105 NULL, 0, 500); 106 if (ret < 0) { 107 pr_err("reg_w err %d\n", ret); 108 gspca_dev->usb_err = ret; 109 } 110 } 111 112 static void reg_wb(struct gspca_dev *gspca_dev, 113 u8 req, 114 u16 value, 115 u16 index, 116 u8 byte) 117 { 118 struct usb_device *dev = gspca_dev->dev; 119 int ret; 120 121 if (gspca_dev->usb_err < 0) 122 return; 123 PDEBUG(D_USBO, "SET %02x %04x %04x %02x", req, value, index, byte); 124 gspca_dev->usb_buf[0] = byte; 125 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 126 req, 127 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 128 value, index, 129 gspca_dev->usb_buf, 1, 500); 130 if (ret < 0) { 131 pr_err("reg_w err %d\n", ret); 132 gspca_dev->usb_err = ret; 133 } 134 } 135 136 static void wait_status_0(struct gspca_dev *gspca_dev) 137 { 138 int i, w; 139 140 i = 16; 141 w = 0; 142 do { 143 reg_r(gspca_dev, 0x21, 0x0000, 1); 144 if (gspca_dev->usb_buf[0] == 0) 145 return; 146 w += 15; 147 msleep(w); 148 } while (--i > 0); 149 PERR("wait_status_0 timeout"); 150 gspca_dev->usb_err = -ETIME; 151 } 152 153 static void wait_status_1(struct gspca_dev *gspca_dev) 154 { 155 int i; 156 157 i = 10; 158 do { 159 reg_r(gspca_dev, 0x21, 0x0001, 1); 160 msleep(10); 161 if (gspca_dev->usb_buf[0] == 1) { 162 reg_wb(gspca_dev, 0x21, 0x0000, 0x0001, 0x00); 163 reg_r(gspca_dev, 0x21, 0x0001, 1); 164 return; 165 } 166 } while (--i > 0); 167 PERR("wait_status_1 timeout"); 168 gspca_dev->usb_err = -ETIME; 169 } 170 171 static void setbrightness(struct gspca_dev *gspca_dev, s32 val) 172 { 173 reg_wb(gspca_dev, 0xc0, 0x0000, 0x00c0, val); 174 } 175 176 static void setcontrast(struct gspca_dev *gspca_dev, s32 val) 177 { 178 reg_wb(gspca_dev, 0xc1, 0x0000, 0x00c1, val); 179 } 180 181 static void sethue(struct gspca_dev *gspca_dev, s32 val) 182 { 183 reg_wb(gspca_dev, 0xc2, 0x0000, 0x0000, val); 184 } 185 186 static void setcolor(struct gspca_dev *gspca_dev, s32 val) 187 { 188 reg_wb(gspca_dev, 0xc3, 0x0000, 0x00c3, val); 189 } 190 191 static void setsharpness(struct gspca_dev *gspca_dev, s32 val) 192 { 193 reg_wb(gspca_dev, 0xc4, 0x0000, 0x00c4, val); 194 } 195 196 /* this function is called at probe time */ 197 static int sd_config(struct gspca_dev *gspca_dev, 198 const struct usb_device_id *id) 199 { 200 gspca_dev->cam.cam_mode = vga_mode; 201 gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode); 202 gspca_dev->cam.npkt = 128; /* number of packets per ISOC message */ 203 /*fixme: 256 in ms-win traces*/ 204 205 return 0; 206 } 207 208 /* this function is called at probe and resume time */ 209 static int sd_init(struct gspca_dev *gspca_dev) 210 { 211 reg_w(gspca_dev, 0x00, 0x0001, 0x2067); 212 reg_w(gspca_dev, 0x00, 0x00d0, 0x206b); 213 reg_w(gspca_dev, 0x00, 0x0000, 0x206c); 214 reg_w(gspca_dev, 0x00, 0x0001, 0x2069); 215 msleep(8); 216 reg_w(gspca_dev, 0x00, 0x00c0, 0x206b); 217 reg_w(gspca_dev, 0x00, 0x0000, 0x206c); 218 reg_w(gspca_dev, 0x00, 0x0001, 0x2069); 219 220 reg_r(gspca_dev, 0x20, 0x0000, 1); 221 reg_r(gspca_dev, 0x20, 0x0000, 5); 222 reg_r(gspca_dev, 0x23, 0x0000, 64); 223 PDEBUG(D_PROBE, "%s%s", &gspca_dev->usb_buf[0x1c], 224 &gspca_dev->usb_buf[0x30]); 225 reg_r(gspca_dev, 0x23, 0x0001, 64); 226 return gspca_dev->usb_err; 227 } 228 229 /* function called at start time before URB creation */ 230 static int sd_isoc_init(struct gspca_dev *gspca_dev) 231 { 232 u8 mode; 233 234 reg_r(gspca_dev, 0x00, 0x2520, 1); 235 wait_status_0(gspca_dev); 236 reg_w(gspca_dev, 0xc5, 0x0003, 0x0000); 237 wait_status_1(gspca_dev); 238 239 wait_status_0(gspca_dev); 240 mode = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv; 241 reg_wb(gspca_dev, 0x25, 0x0000, 0x0004, mode); 242 reg_r(gspca_dev, 0x25, 0x0004, 1); 243 reg_wb(gspca_dev, 0x27, 0x0000, 0x0000, 0x06); /* 420 */ 244 reg_r(gspca_dev, 0x27, 0x0000, 1); 245 246 /* not useful.. 247 gspca_dev->alt = 4; * use alternate setting 3 */ 248 249 return gspca_dev->usb_err; 250 } 251 252 /* -- start the camera -- */ 253 static int sd_start(struct gspca_dev *gspca_dev) 254 { 255 struct sd *sd = (struct sd *) gspca_dev; 256 257 /* initialize the JPEG header */ 258 jpeg_define(sd->jpeg_hdr, gspca_dev->pixfmt.height, 259 gspca_dev->pixfmt.width, 260 0x22); /* JPEG 411 */ 261 262 /* the JPEG quality shall be 85% */ 263 jpeg_set_qual(sd->jpeg_hdr, 85); 264 265 reg_r(gspca_dev, 0x00, 0x2520, 1); 266 msleep(8); 267 268 /* start the capture */ 269 wait_status_0(gspca_dev); 270 reg_w(gspca_dev, 0x31, 0x0000, 0x0004); /* start request */ 271 wait_status_1(gspca_dev); 272 wait_status_0(gspca_dev); 273 msleep(200); 274 275 sd->pkt_seq = 0; 276 return gspca_dev->usb_err; 277 } 278 279 static void sd_stopN(struct gspca_dev *gspca_dev) 280 { 281 /* stop the capture */ 282 wait_status_0(gspca_dev); 283 reg_w(gspca_dev, 0x31, 0x0000, 0x0000); /* stop request */ 284 wait_status_1(gspca_dev); 285 wait_status_0(gspca_dev); 286 } 287 288 /* move a packet adding 0x00 after 0xff */ 289 static void add_packet(struct gspca_dev *gspca_dev, 290 u8 *data, 291 int len) 292 { 293 int i; 294 295 i = 0; 296 do { 297 if (data[i] == 0xff) { 298 gspca_frame_add(gspca_dev, INTER_PACKET, 299 data, i + 1); 300 len -= i; 301 data += i; 302 *data = 0x00; 303 i = 0; 304 } 305 } while (++i < len); 306 gspca_frame_add(gspca_dev, INTER_PACKET, data, len); 307 } 308 309 static void sd_pkt_scan(struct gspca_dev *gspca_dev, 310 u8 *data, /* isoc packet */ 311 int len) /* iso packet length */ 312 { 313 struct sd *sd = (struct sd *) gspca_dev; 314 static const u8 ffd9[] = {0xff, 0xd9}; 315 316 /* image packets start with: 317 * 02 8n 318 * with <n> bit: 319 * 0x01: even (0) / odd (1) image 320 * 0x02: end of image when set 321 */ 322 if (len < 3) 323 return; /* empty packet */ 324 if (*data == 0x02) { 325 if (data[1] & 0x02) { 326 sd->pkt_seq = !(data[1] & 1); 327 add_packet(gspca_dev, data + 2, len - 2); 328 gspca_frame_add(gspca_dev, LAST_PACKET, 329 ffd9, 2); 330 return; 331 } 332 if ((data[1] & 1) != sd->pkt_seq) 333 goto err; 334 if (gspca_dev->last_packet_type == LAST_PACKET) 335 gspca_frame_add(gspca_dev, FIRST_PACKET, 336 sd->jpeg_hdr, JPEG_HDR_SZ); 337 add_packet(gspca_dev, data + 2, len - 2); 338 return; 339 } 340 err: 341 gspca_dev->last_packet_type = DISCARD_PACKET; 342 } 343 344 static int sd_s_ctrl(struct v4l2_ctrl *ctrl) 345 { 346 struct gspca_dev *gspca_dev = 347 container_of(ctrl->handler, struct gspca_dev, ctrl_handler); 348 349 gspca_dev->usb_err = 0; 350 351 if (!gspca_dev->streaming) 352 return 0; 353 354 switch (ctrl->id) { 355 case V4L2_CID_BRIGHTNESS: 356 setbrightness(gspca_dev, ctrl->val); 357 break; 358 case V4L2_CID_CONTRAST: 359 setcontrast(gspca_dev, ctrl->val); 360 break; 361 case V4L2_CID_HUE: 362 sethue(gspca_dev, ctrl->val); 363 break; 364 case V4L2_CID_SATURATION: 365 setcolor(gspca_dev, ctrl->val); 366 break; 367 case V4L2_CID_SHARPNESS: 368 setsharpness(gspca_dev, ctrl->val); 369 break; 370 } 371 return gspca_dev->usb_err; 372 } 373 374 static const struct v4l2_ctrl_ops sd_ctrl_ops = { 375 .s_ctrl = sd_s_ctrl, 376 }; 377 378 static int sd_init_controls(struct gspca_dev *gspca_dev) 379 { 380 struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler; 381 382 gspca_dev->vdev.ctrl_handler = hdl; 383 v4l2_ctrl_handler_init(hdl, 5); 384 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, 385 V4L2_CID_BRIGHTNESS, 0, 255, 1, 128); 386 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, 387 V4L2_CID_CONTRAST, 0, 8, 1, 1); 388 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, 389 V4L2_CID_HUE, 0, 255, 1, 0); 390 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, 391 V4L2_CID_SATURATION, 0, 8, 1, 1); 392 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, 393 V4L2_CID_SHARPNESS, 0, 255, 1, 0); 394 395 if (hdl->error) { 396 pr_err("Could not initialize controls\n"); 397 return hdl->error; 398 } 399 return 0; 400 } 401 402 /* sub-driver description */ 403 static const struct sd_desc sd_desc = { 404 .name = MODULE_NAME, 405 .config = sd_config, 406 .init = sd_init, 407 .init_controls = sd_init_controls, 408 .isoc_init = sd_isoc_init, 409 .start = sd_start, 410 .stopN = sd_stopN, 411 .pkt_scan = sd_pkt_scan, 412 }; 413 414 /* -- module initialisation -- */ 415 static const struct usb_device_id device_table[] = { 416 {USB_DEVICE(0x04fc, 0x1528)}, 417 {} 418 }; 419 MODULE_DEVICE_TABLE(usb, device_table); 420 421 /* -- device connect -- */ 422 static int sd_probe(struct usb_interface *intf, 423 const struct usb_device_id *id) 424 { 425 /* the video interface for isochronous transfer is 1 */ 426 if (intf->cur_altsetting->desc.bInterfaceNumber != 1) 427 return -ENODEV; 428 429 return gspca_dev_probe2(intf, id, &sd_desc, sizeof(struct sd), 430 THIS_MODULE); 431 } 432 433 static struct usb_driver sd_driver = { 434 .name = MODULE_NAME, 435 .id_table = device_table, 436 .probe = sd_probe, 437 .disconnect = gspca_disconnect, 438 #ifdef CONFIG_PM 439 .suspend = gspca_suspend, 440 .resume = gspca_resume, 441 .reset_resume = gspca_resume, 442 #endif 443 }; 444 445 module_usb_driver(sd_driver); 446