1 /* 2 * Syntek STK1135 subdriver 3 * 4 * Copyright (c) 2013 Ondrej Zary 5 * 6 * Based on Syntekdriver (stk11xx) by Nicolas VIVIEN: 7 * http://syntekdriver.sourceforge.net 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 */ 19 20 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 21 22 #define MODULE_NAME "stk1135" 23 24 #include "gspca.h" 25 #include "stk1135.h" 26 27 MODULE_AUTHOR("Ondrej Zary"); 28 MODULE_DESCRIPTION("Syntek STK1135 USB Camera Driver"); 29 MODULE_LICENSE("GPL"); 30 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 u8 sensor_page; 38 39 bool flip_status; 40 u8 flip_debounce; 41 42 struct v4l2_ctrl *hflip; 43 struct v4l2_ctrl *vflip; 44 }; 45 46 static const struct v4l2_pix_format stk1135_modes[] = { 47 /* default mode (this driver supports variable resolution) */ 48 {640, 480, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE, 49 .bytesperline = 640, 50 .sizeimage = 640 * 480, 51 .colorspace = V4L2_COLORSPACE_SRGB}, 52 }; 53 54 /* -- read a register -- */ 55 static u8 reg_r(struct gspca_dev *gspca_dev, 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 70 gspca_dbg(gspca_dev, D_USBI, "reg_r 0x%x=0x%02x\n", 71 index, gspca_dev->usb_buf[0]); 72 if (ret < 0) { 73 pr_err("reg_r 0x%x err %d\n", index, ret); 74 gspca_dev->usb_err = ret; 75 return 0; 76 } 77 78 return gspca_dev->usb_buf[0]; 79 } 80 81 /* -- write a register -- */ 82 static void reg_w(struct gspca_dev *gspca_dev, u16 index, u8 val) 83 { 84 int ret; 85 struct usb_device *dev = gspca_dev->dev; 86 87 if (gspca_dev->usb_err < 0) 88 return; 89 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 90 0x01, 91 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 92 val, 93 index, 94 NULL, 95 0, 96 500); 97 gspca_dbg(gspca_dev, D_USBO, "reg_w 0x%x:=0x%02x\n", index, val); 98 if (ret < 0) { 99 pr_err("reg_w 0x%x err %d\n", index, ret); 100 gspca_dev->usb_err = ret; 101 } 102 } 103 104 static void reg_w_mask(struct gspca_dev *gspca_dev, u16 index, u8 val, u8 mask) 105 { 106 val = (reg_r(gspca_dev, index) & ~mask) | (val & mask); 107 reg_w(gspca_dev, index, val); 108 } 109 110 /* this function is called at probe time */ 111 static int sd_config(struct gspca_dev *gspca_dev, 112 const struct usb_device_id *id) 113 { 114 gspca_dev->cam.cam_mode = stk1135_modes; 115 gspca_dev->cam.nmodes = ARRAY_SIZE(stk1135_modes); 116 return 0; 117 } 118 119 static int stk1135_serial_wait_ready(struct gspca_dev *gspca_dev) 120 { 121 int i = 0; 122 u8 val; 123 124 do { 125 val = reg_r(gspca_dev, STK1135_REG_SICTL + 1); 126 if (i++ > 500) { /* maximum retry count */ 127 pr_err("serial bus timeout: status=0x%02x\n", val); 128 return -1; 129 } 130 /* repeat if BUSY or WRITE/READ not finished */ 131 } while ((val & 0x10) || !(val & 0x05)); 132 133 return 0; 134 } 135 136 static u8 sensor_read_8(struct gspca_dev *gspca_dev, u8 addr) 137 { 138 reg_w(gspca_dev, STK1135_REG_SBUSR, addr); 139 /* begin read */ 140 reg_w(gspca_dev, STK1135_REG_SICTL, 0x20); 141 /* wait until finished */ 142 if (stk1135_serial_wait_ready(gspca_dev)) { 143 pr_err("Sensor read failed\n"); 144 return 0; 145 } 146 147 return reg_r(gspca_dev, STK1135_REG_SBUSR + 1); 148 } 149 150 static u16 sensor_read_16(struct gspca_dev *gspca_dev, u8 addr) 151 { 152 return (sensor_read_8(gspca_dev, addr) << 8) | 153 sensor_read_8(gspca_dev, 0xf1); 154 } 155 156 static void sensor_write_8(struct gspca_dev *gspca_dev, u8 addr, u8 data) 157 { 158 /* load address and data registers */ 159 reg_w(gspca_dev, STK1135_REG_SBUSW, addr); 160 reg_w(gspca_dev, STK1135_REG_SBUSW + 1, data); 161 /* begin write */ 162 reg_w(gspca_dev, STK1135_REG_SICTL, 0x01); 163 /* wait until finished */ 164 if (stk1135_serial_wait_ready(gspca_dev)) { 165 pr_err("Sensor write failed\n"); 166 return; 167 } 168 } 169 170 static void sensor_write_16(struct gspca_dev *gspca_dev, u8 addr, u16 data) 171 { 172 sensor_write_8(gspca_dev, addr, data >> 8); 173 sensor_write_8(gspca_dev, 0xf1, data & 0xff); 174 } 175 176 static void sensor_set_page(struct gspca_dev *gspca_dev, u8 page) 177 { 178 struct sd *sd = (struct sd *) gspca_dev; 179 180 if (page != sd->sensor_page) { 181 sensor_write_16(gspca_dev, 0xf0, page); 182 sd->sensor_page = page; 183 } 184 } 185 186 static u16 sensor_read(struct gspca_dev *gspca_dev, u16 reg) 187 { 188 sensor_set_page(gspca_dev, reg >> 8); 189 return sensor_read_16(gspca_dev, reg & 0xff); 190 } 191 192 static void sensor_write(struct gspca_dev *gspca_dev, u16 reg, u16 val) 193 { 194 sensor_set_page(gspca_dev, reg >> 8); 195 sensor_write_16(gspca_dev, reg & 0xff, val); 196 } 197 198 static void sensor_write_mask(struct gspca_dev *gspca_dev, 199 u16 reg, u16 val, u16 mask) 200 { 201 val = (sensor_read(gspca_dev, reg) & ~mask) | (val & mask); 202 sensor_write(gspca_dev, reg, val); 203 } 204 205 struct sensor_val { 206 u16 reg; 207 u16 val; 208 }; 209 210 /* configure MT9M112 sensor */ 211 static void stk1135_configure_mt9m112(struct gspca_dev *gspca_dev) 212 { 213 static const struct sensor_val cfg[] = { 214 /* restart&reset, chip enable, reserved */ 215 { 0x00d, 0x000b }, { 0x00d, 0x0008 }, { 0x035, 0x0022 }, 216 /* mode ctl: AWB on, AE both, clip aper corr, defect corr, AE */ 217 { 0x106, 0x700e }, 218 219 { 0x2dd, 0x18e0 }, /* B-R thresholds, */ 220 221 /* AWB */ 222 { 0x21f, 0x0180 }, /* Cb and Cr limits */ 223 { 0x220, 0xc814 }, { 0x221, 0x8080 }, /* lum limits, RGB gain */ 224 { 0x222, 0xa078 }, { 0x223, 0xa078 }, /* R, B limit */ 225 { 0x224, 0x5f20 }, { 0x228, 0xea02 }, /* mtx adj lim, adv ctl */ 226 { 0x229, 0x867a }, /* wide gates */ 227 228 /* Color correction */ 229 /* imager gains base, delta, delta signs */ 230 { 0x25e, 0x594c }, { 0x25f, 0x4d51 }, { 0x260, 0x0002 }, 231 /* AWB adv ctl 2, gain offs */ 232 { 0x2ef, 0x0008 }, { 0x2f2, 0x0000 }, 233 /* base matrix signs, scale K1-5, K6-9 */ 234 { 0x202, 0x00ee }, { 0x203, 0x3923 }, { 0x204, 0x0724 }, 235 /* base matrix coef */ 236 { 0x209, 0x00cd }, { 0x20a, 0x0093 }, { 0x20b, 0x0004 },/*K1-3*/ 237 { 0x20c, 0x005c }, { 0x20d, 0x00d9 }, { 0x20e, 0x0053 },/*K4-6*/ 238 { 0x20f, 0x0008 }, { 0x210, 0x0091 }, { 0x211, 0x00cf },/*K7-9*/ 239 { 0x215, 0x0000 }, /* delta mtx signs */ 240 /* delta matrix coef */ 241 { 0x216, 0x0000 }, { 0x217, 0x0000 }, { 0x218, 0x0000 },/*D1-3*/ 242 { 0x219, 0x0000 }, { 0x21a, 0x0000 }, { 0x21b, 0x0000 },/*D4-6*/ 243 { 0x21c, 0x0000 }, { 0x21d, 0x0000 }, { 0x21e, 0x0000 },/*D7-9*/ 244 /* enable & disable manual WB to apply color corr. settings */ 245 { 0x106, 0xf00e }, { 0x106, 0x700e }, 246 247 /* Lens shading correction */ 248 { 0x180, 0x0007 }, /* control */ 249 /* vertical knee 0, 2+1, 4+3 */ 250 { 0x181, 0xde13 }, { 0x182, 0xebe2 }, { 0x183, 0x00f6 }, /* R */ 251 { 0x184, 0xe114 }, { 0x185, 0xeadd }, { 0x186, 0xfdf6 }, /* G */ 252 { 0x187, 0xe511 }, { 0x188, 0xede6 }, { 0x189, 0xfbf7 }, /* B */ 253 /* horizontal knee 0, 2+1, 4+3, 5 */ 254 { 0x18a, 0xd613 }, { 0x18b, 0xedec }, /* R .. */ 255 { 0x18c, 0xf9f2 }, { 0x18d, 0x0000 }, /* .. R */ 256 { 0x18e, 0xd815 }, { 0x18f, 0xe9ea }, /* G .. */ 257 { 0x190, 0xf9f1 }, { 0x191, 0x0002 }, /* .. G */ 258 { 0x192, 0xde10 }, { 0x193, 0xefef }, /* B .. */ 259 { 0x194, 0xfbf4 }, { 0x195, 0x0002 }, /* .. B */ 260 /* vertical knee 6+5, 8+7 */ 261 { 0x1b6, 0x0e06 }, { 0x1b7, 0x2713 }, /* R */ 262 { 0x1b8, 0x1106 }, { 0x1b9, 0x2713 }, /* G */ 263 { 0x1ba, 0x0c03 }, { 0x1bb, 0x2a0f }, /* B */ 264 /* horizontal knee 7+6, 9+8, 10 */ 265 { 0x1bc, 0x1208 }, { 0x1bd, 0x1a16 }, { 0x1be, 0x0022 }, /* R */ 266 { 0x1bf, 0x150a }, { 0x1c0, 0x1c1a }, { 0x1c1, 0x002d }, /* G */ 267 { 0x1c2, 0x1109 }, { 0x1c3, 0x1414 }, { 0x1c4, 0x002a }, /* B */ 268 { 0x106, 0x740e }, /* enable lens shading correction */ 269 270 /* Gamma correction - context A */ 271 { 0x153, 0x0b03 }, { 0x154, 0x4722 }, { 0x155, 0xac82 }, 272 { 0x156, 0xdac7 }, { 0x157, 0xf5e9 }, { 0x158, 0xff00 }, 273 /* Gamma correction - context B */ 274 { 0x1dc, 0x0b03 }, { 0x1dd, 0x4722 }, { 0x1de, 0xac82 }, 275 { 0x1df, 0xdac7 }, { 0x1e0, 0xf5e9 }, { 0x1e1, 0xff00 }, 276 277 /* output format: RGB, invert output pixclock, output bayer */ 278 { 0x13a, 0x4300 }, { 0x19b, 0x4300 }, /* for context A, B */ 279 { 0x108, 0x0180 }, /* format control - enable bayer row flip */ 280 281 { 0x22f, 0xd100 }, { 0x29c, 0xd100 }, /* AE A, B */ 282 283 /* default prg conf, prg ctl - by 0x2d2, prg advance - PA1 */ 284 { 0x2d2, 0x0000 }, { 0x2cc, 0x0004 }, { 0x2cb, 0x0001 }, 285 286 { 0x22e, 0x0c3c }, { 0x267, 0x1010 }, /* AE tgt ctl, gain lim */ 287 288 /* PLL */ 289 { 0x065, 0xa000 }, /* clk ctl - enable PLL (clear bit 14) */ 290 { 0x066, 0x2003 }, { 0x067, 0x0501 }, /* PLL M=128, N=3, P=1 */ 291 { 0x065, 0x2000 }, /* disable PLL bypass (clear bit 15) */ 292 293 { 0x005, 0x01b8 }, { 0x007, 0x00d8 }, /* horiz blanking B, A */ 294 295 /* AE line size, shutter delay limit */ 296 { 0x239, 0x06c0 }, { 0x23b, 0x040e }, /* for context A */ 297 { 0x23a, 0x06c0 }, { 0x23c, 0x0564 }, /* for context B */ 298 /* shutter width basis 60Hz, 50Hz */ 299 { 0x257, 0x0208 }, { 0x258, 0x0271 }, /* for context A */ 300 { 0x259, 0x0209 }, { 0x25a, 0x0271 }, /* for context B */ 301 302 { 0x25c, 0x120d }, { 0x25d, 0x1712 }, /* flicker 60Hz, 50Hz */ 303 { 0x264, 0x5e1c }, /* reserved */ 304 /* flicker, AE gain limits, gain zone limits */ 305 { 0x25b, 0x0003 }, { 0x236, 0x7810 }, { 0x237, 0x8304 }, 306 307 { 0x008, 0x0021 }, /* vert blanking A */ 308 }; 309 int i; 310 u16 width, height; 311 312 for (i = 0; i < ARRAY_SIZE(cfg); i++) 313 sensor_write(gspca_dev, cfg[i].reg, cfg[i].val); 314 315 /* set output size */ 316 width = gspca_dev->pixfmt.width; 317 height = gspca_dev->pixfmt.height; 318 if (width <= 640 && height <= 512) { /* context A (half readout speed)*/ 319 sensor_write(gspca_dev, 0x1a7, width); 320 sensor_write(gspca_dev, 0x1aa, height); 321 /* set read mode context A */ 322 sensor_write(gspca_dev, 0x0c8, 0x0000); 323 /* set resize, read mode, vblank, hblank context A */ 324 sensor_write(gspca_dev, 0x2c8, 0x0000); 325 } else { /* context B (full readout speed) */ 326 sensor_write(gspca_dev, 0x1a1, width); 327 sensor_write(gspca_dev, 0x1a4, height); 328 /* set read mode context B */ 329 sensor_write(gspca_dev, 0x0c8, 0x0008); 330 /* set resize, read mode, vblank, hblank context B */ 331 sensor_write(gspca_dev, 0x2c8, 0x040b); 332 } 333 } 334 335 static void stk1135_configure_clock(struct gspca_dev *gspca_dev) 336 { 337 /* configure SCLKOUT */ 338 reg_w(gspca_dev, STK1135_REG_TMGEN, 0x12); 339 /* set 1 clock per pixel */ 340 /* and positive edge clocked pulse high when pixel counter = 0 */ 341 reg_w(gspca_dev, STK1135_REG_TCP1 + 0, 0x41); 342 reg_w(gspca_dev, STK1135_REG_TCP1 + 1, 0x00); 343 reg_w(gspca_dev, STK1135_REG_TCP1 + 2, 0x00); 344 reg_w(gspca_dev, STK1135_REG_TCP1 + 3, 0x00); 345 346 /* enable CLKOUT for sensor */ 347 reg_w(gspca_dev, STK1135_REG_SENSO + 0, 0x10); 348 /* disable STOP clock */ 349 reg_w(gspca_dev, STK1135_REG_SENSO + 1, 0x00); 350 /* set lower 8 bits of PLL feedback divider */ 351 reg_w(gspca_dev, STK1135_REG_SENSO + 3, 0x07); 352 /* set other PLL parameters */ 353 reg_w(gspca_dev, STK1135_REG_PLLFD, 0x06); 354 /* enable timing generator */ 355 reg_w(gspca_dev, STK1135_REG_TMGEN, 0x80); 356 /* enable PLL */ 357 reg_w(gspca_dev, STK1135_REG_SENSO + 2, 0x04); 358 359 /* set serial interface clock divider (30MHz/0x1f*16+2) = 60240 kHz) */ 360 reg_w(gspca_dev, STK1135_REG_SICTL + 2, 0x1f); 361 362 /* wait a while for sensor to catch up */ 363 udelay(1000); 364 } 365 366 static void stk1135_camera_disable(struct gspca_dev *gspca_dev) 367 { 368 /* set capture end Y position to 0 */ 369 reg_w(gspca_dev, STK1135_REG_CIEPO + 2, 0x00); 370 reg_w(gspca_dev, STK1135_REG_CIEPO + 3, 0x00); 371 /* disable capture */ 372 reg_w_mask(gspca_dev, STK1135_REG_SCTRL, 0x00, 0x80); 373 374 /* enable sensor standby and diasble chip enable */ 375 sensor_write_mask(gspca_dev, 0x00d, 0x0004, 0x000c); 376 377 /* disable PLL */ 378 reg_w_mask(gspca_dev, STK1135_REG_SENSO + 2, 0x00, 0x01); 379 /* disable timing generator */ 380 reg_w(gspca_dev, STK1135_REG_TMGEN, 0x00); 381 /* enable STOP clock */ 382 reg_w(gspca_dev, STK1135_REG_SENSO + 1, 0x20); 383 /* disable CLKOUT for sensor */ 384 reg_w(gspca_dev, STK1135_REG_SENSO, 0x00); 385 386 /* disable sensor (GPIO5) and enable GPIO0,3,6 (?) - sensor standby? */ 387 reg_w(gspca_dev, STK1135_REG_GCTRL, 0x49); 388 } 389 390 /* this function is called at probe and resume time */ 391 static int sd_init(struct gspca_dev *gspca_dev) 392 { 393 u16 sensor_id; 394 char *sensor_name; 395 struct sd *sd = (struct sd *) gspca_dev; 396 397 /* set GPIO3,4,5,6 direction to output */ 398 reg_w(gspca_dev, STK1135_REG_GCTRL + 2, 0x78); 399 /* enable sensor (GPIO5) */ 400 reg_w(gspca_dev, STK1135_REG_GCTRL, (1 << 5)); 401 /* disable ROM interface */ 402 reg_w(gspca_dev, STK1135_REG_GCTRL + 3, 0x80); 403 /* enable interrupts from GPIO8 (flip sensor) and GPIO9 (???) */ 404 reg_w(gspca_dev, STK1135_REG_ICTRL + 1, 0x00); 405 reg_w(gspca_dev, STK1135_REG_ICTRL + 3, 0x03); 406 /* enable remote wakeup from GPIO9 (???) */ 407 reg_w(gspca_dev, STK1135_REG_RMCTL + 1, 0x00); 408 reg_w(gspca_dev, STK1135_REG_RMCTL + 3, 0x02); 409 410 /* reset serial interface */ 411 reg_w(gspca_dev, STK1135_REG_SICTL, 0x80); 412 reg_w(gspca_dev, STK1135_REG_SICTL, 0x00); 413 /* set sensor address */ 414 reg_w(gspca_dev, STK1135_REG_SICTL + 3, 0xba); 415 /* disable alt 2-wire serial interface */ 416 reg_w(gspca_dev, STK1135_REG_ASIC + 3, 0x00); 417 418 stk1135_configure_clock(gspca_dev); 419 420 /* read sensor ID */ 421 sd->sensor_page = 0xff; 422 sensor_id = sensor_read(gspca_dev, 0x000); 423 424 switch (sensor_id) { 425 case 0x148c: 426 sensor_name = "MT9M112"; 427 break; 428 default: 429 sensor_name = "unknown"; 430 } 431 pr_info("Detected sensor type %s (0x%x)\n", sensor_name, sensor_id); 432 433 stk1135_camera_disable(gspca_dev); 434 435 return gspca_dev->usb_err; 436 } 437 438 /* -- start the camera -- */ 439 static int sd_start(struct gspca_dev *gspca_dev) 440 { 441 struct sd *sd = (struct sd *) gspca_dev; 442 u16 width, height; 443 444 /* enable sensor (GPIO5) */ 445 reg_w(gspca_dev, STK1135_REG_GCTRL, (1 << 5)); 446 447 stk1135_configure_clock(gspca_dev); 448 449 /* set capture start position X = 0, Y = 0 */ 450 reg_w(gspca_dev, STK1135_REG_CISPO + 0, 0x00); 451 reg_w(gspca_dev, STK1135_REG_CISPO + 1, 0x00); 452 reg_w(gspca_dev, STK1135_REG_CISPO + 2, 0x00); 453 reg_w(gspca_dev, STK1135_REG_CISPO + 3, 0x00); 454 455 /* set capture end position */ 456 width = gspca_dev->pixfmt.width; 457 height = gspca_dev->pixfmt.height; 458 reg_w(gspca_dev, STK1135_REG_CIEPO + 0, width & 0xff); 459 reg_w(gspca_dev, STK1135_REG_CIEPO + 1, width >> 8); 460 reg_w(gspca_dev, STK1135_REG_CIEPO + 2, height & 0xff); 461 reg_w(gspca_dev, STK1135_REG_CIEPO + 3, height >> 8); 462 463 /* set 8-bit mode */ 464 reg_w(gspca_dev, STK1135_REG_SCTRL, 0x20); 465 466 stk1135_configure_mt9m112(gspca_dev); 467 468 /* enable capture */ 469 reg_w_mask(gspca_dev, STK1135_REG_SCTRL, 0x80, 0x80); 470 471 if (gspca_dev->usb_err >= 0) 472 gspca_dbg(gspca_dev, D_STREAM, "camera started alt: 0x%02x\n", 473 gspca_dev->alt); 474 475 sd->pkt_seq = 0; 476 477 return gspca_dev->usb_err; 478 } 479 480 static void sd_stopN(struct gspca_dev *gspca_dev) 481 { 482 struct usb_device *dev = gspca_dev->dev; 483 484 usb_set_interface(dev, gspca_dev->iface, 0); 485 486 stk1135_camera_disable(gspca_dev); 487 488 gspca_dbg(gspca_dev, D_STREAM, "camera stopped\n"); 489 } 490 491 static void sd_pkt_scan(struct gspca_dev *gspca_dev, 492 u8 *data, /* isoc packet */ 493 int len) /* iso packet length */ 494 { 495 struct sd *sd = (struct sd *) gspca_dev; 496 int skip = sizeof(struct stk1135_pkt_header); 497 bool flip; 498 enum gspca_packet_type pkt_type = INTER_PACKET; 499 struct stk1135_pkt_header *hdr = (void *)data; 500 u8 seq; 501 502 if (len < 4) { 503 gspca_dbg(gspca_dev, D_PACK, "received short packet (less than 4 bytes)\n"); 504 return; 505 } 506 507 /* GPIO 8 is flip sensor (1 = normal position, 0 = flipped to back) */ 508 flip = !(le16_to_cpu(hdr->gpio) & (1 << 8)); 509 /* it's a switch, needs software debounce */ 510 if (sd->flip_status != flip) 511 sd->flip_debounce++; 512 else 513 sd->flip_debounce = 0; 514 515 /* check sequence number (not present in new frame packets) */ 516 if (!(hdr->flags & STK1135_HDR_FRAME_START)) { 517 seq = hdr->seq & STK1135_HDR_SEQ_MASK; 518 if (seq != sd->pkt_seq) { 519 gspca_dbg(gspca_dev, D_PACK, "received out-of-sequence packet\n"); 520 /* resync sequence and discard packet */ 521 sd->pkt_seq = seq; 522 gspca_dev->last_packet_type = DISCARD_PACKET; 523 return; 524 } 525 } 526 sd->pkt_seq++; 527 if (sd->pkt_seq > STK1135_HDR_SEQ_MASK) 528 sd->pkt_seq = 0; 529 530 if (len == sizeof(struct stk1135_pkt_header)) 531 return; 532 533 if (hdr->flags & STK1135_HDR_FRAME_START) { /* new frame */ 534 skip = 8; /* the header is longer */ 535 gspca_frame_add(gspca_dev, LAST_PACKET, data, 0); 536 pkt_type = FIRST_PACKET; 537 } 538 gspca_frame_add(gspca_dev, pkt_type, data + skip, len - skip); 539 } 540 541 static void sethflip(struct gspca_dev *gspca_dev, s32 val) 542 { 543 struct sd *sd = (struct sd *) gspca_dev; 544 545 if (sd->flip_status) 546 val = !val; 547 sensor_write_mask(gspca_dev, 0x020, val ? 0x0002 : 0x0000 , 0x0002); 548 } 549 550 static void setvflip(struct gspca_dev *gspca_dev, s32 val) 551 { 552 struct sd *sd = (struct sd *) gspca_dev; 553 554 if (sd->flip_status) 555 val = !val; 556 sensor_write_mask(gspca_dev, 0x020, val ? 0x0001 : 0x0000 , 0x0001); 557 } 558 559 static void stk1135_dq_callback(struct gspca_dev *gspca_dev) 560 { 561 struct sd *sd = (struct sd *) gspca_dev; 562 563 if (sd->flip_debounce > 100) { 564 sd->flip_status = !sd->flip_status; 565 sethflip(gspca_dev, v4l2_ctrl_g_ctrl(sd->hflip)); 566 setvflip(gspca_dev, v4l2_ctrl_g_ctrl(sd->vflip)); 567 } 568 } 569 570 static int sd_s_ctrl(struct v4l2_ctrl *ctrl) 571 { 572 struct gspca_dev *gspca_dev = 573 container_of(ctrl->handler, struct gspca_dev, ctrl_handler); 574 575 gspca_dev->usb_err = 0; 576 577 if (!gspca_dev->streaming) 578 return 0; 579 580 switch (ctrl->id) { 581 case V4L2_CID_HFLIP: 582 sethflip(gspca_dev, ctrl->val); 583 break; 584 case V4L2_CID_VFLIP: 585 setvflip(gspca_dev, ctrl->val); 586 break; 587 } 588 589 return gspca_dev->usb_err; 590 } 591 592 static const struct v4l2_ctrl_ops sd_ctrl_ops = { 593 .s_ctrl = sd_s_ctrl, 594 }; 595 596 static int sd_init_controls(struct gspca_dev *gspca_dev) 597 { 598 struct sd *sd = (struct sd *) gspca_dev; 599 struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler; 600 601 gspca_dev->vdev.ctrl_handler = hdl; 602 v4l2_ctrl_handler_init(hdl, 2); 603 sd->hflip = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, 604 V4L2_CID_HFLIP, 0, 1, 1, 0); 605 sd->vflip = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, 606 V4L2_CID_VFLIP, 0, 1, 1, 0); 607 608 if (hdl->error) { 609 pr_err("Could not initialize controls\n"); 610 return hdl->error; 611 } 612 return 0; 613 } 614 615 static void stk1135_try_fmt(struct gspca_dev *gspca_dev, struct v4l2_format *fmt) 616 { 617 fmt->fmt.pix.width = clamp(fmt->fmt.pix.width, 32U, 1280U); 618 fmt->fmt.pix.height = clamp(fmt->fmt.pix.height, 32U, 1024U); 619 /* round up to even numbers */ 620 fmt->fmt.pix.width += (fmt->fmt.pix.width & 1); 621 fmt->fmt.pix.height += (fmt->fmt.pix.height & 1); 622 623 fmt->fmt.pix.bytesperline = fmt->fmt.pix.width; 624 fmt->fmt.pix.sizeimage = fmt->fmt.pix.width * fmt->fmt.pix.height; 625 } 626 627 static int stk1135_enum_framesizes(struct gspca_dev *gspca_dev, 628 struct v4l2_frmsizeenum *fsize) 629 { 630 if (fsize->index != 0 || fsize->pixel_format != V4L2_PIX_FMT_SBGGR8) 631 return -EINVAL; 632 633 fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE; 634 fsize->stepwise.min_width = 32; 635 fsize->stepwise.min_height = 32; 636 fsize->stepwise.max_width = 1280; 637 fsize->stepwise.max_height = 1024; 638 fsize->stepwise.step_width = 2; 639 fsize->stepwise.step_height = 2; 640 641 return 0; 642 } 643 644 /* sub-driver description */ 645 static const struct sd_desc sd_desc = { 646 .name = MODULE_NAME, 647 .config = sd_config, 648 .init = sd_init, 649 .init_controls = sd_init_controls, 650 .start = sd_start, 651 .stopN = sd_stopN, 652 .pkt_scan = sd_pkt_scan, 653 .dq_callback = stk1135_dq_callback, 654 .try_fmt = stk1135_try_fmt, 655 .enum_framesizes = stk1135_enum_framesizes, 656 }; 657 658 /* -- module initialisation -- */ 659 static const struct usb_device_id device_table[] = { 660 {USB_DEVICE(0x174f, 0x6a31)}, /* ASUS laptop, MT9M112 sensor */ 661 {} 662 }; 663 MODULE_DEVICE_TABLE(usb, device_table); 664 665 /* -- device connect -- */ 666 static int sd_probe(struct usb_interface *intf, 667 const struct usb_device_id *id) 668 { 669 return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd), 670 THIS_MODULE); 671 } 672 673 static struct usb_driver sd_driver = { 674 .name = MODULE_NAME, 675 .id_table = device_table, 676 .probe = sd_probe, 677 .disconnect = gspca_disconnect, 678 #ifdef CONFIG_PM 679 .suspend = gspca_suspend, 680 .resume = gspca_resume, 681 .reset_resume = gspca_resume, 682 #endif 683 }; 684 685 module_usb_driver(sd_driver); 686