1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Syntek STK1135 subdriver 4 * 5 * Copyright (c) 2013 Ondrej Zary 6 * 7 * Based on Syntekdriver (stk11xx) by Nicolas VIVIEN: 8 * http://syntekdriver.sourceforge.net 9 */ 10 11 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 12 13 #define MODULE_NAME "stk1135" 14 15 #include "gspca.h" 16 #include "stk1135.h" 17 18 MODULE_AUTHOR("Ondrej Zary"); 19 MODULE_DESCRIPTION("Syntek STK1135 USB Camera Driver"); 20 MODULE_LICENSE("GPL"); 21 22 23 /* specific webcam descriptor */ 24 struct sd { 25 struct gspca_dev gspca_dev; /* !! must be the first item */ 26 27 u8 pkt_seq; 28 u8 sensor_page; 29 30 bool flip_status; 31 u8 flip_debounce; 32 33 struct v4l2_ctrl *hflip; 34 struct v4l2_ctrl *vflip; 35 }; 36 37 static const struct v4l2_pix_format stk1135_modes[] = { 38 /* default mode (this driver supports variable resolution) */ 39 {640, 480, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE, 40 .bytesperline = 640, 41 .sizeimage = 640 * 480, 42 .colorspace = V4L2_COLORSPACE_SRGB}, 43 }; 44 45 /* -- read a register -- */ 46 static u8 reg_r(struct gspca_dev *gspca_dev, u16 index) 47 { 48 struct usb_device *dev = gspca_dev->dev; 49 int ret; 50 51 if (gspca_dev->usb_err < 0) 52 return 0; 53 ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 54 0x00, 55 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 56 0x00, 57 index, 58 gspca_dev->usb_buf, 1, 59 500); 60 61 gspca_dbg(gspca_dev, D_USBI, "reg_r 0x%x=0x%02x\n", 62 index, gspca_dev->usb_buf[0]); 63 if (ret < 0) { 64 pr_err("reg_r 0x%x err %d\n", index, ret); 65 gspca_dev->usb_err = ret; 66 return 0; 67 } 68 69 return gspca_dev->usb_buf[0]; 70 } 71 72 /* -- write a register -- */ 73 static void reg_w(struct gspca_dev *gspca_dev, u16 index, u8 val) 74 { 75 int ret; 76 struct usb_device *dev = gspca_dev->dev; 77 78 if (gspca_dev->usb_err < 0) 79 return; 80 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 81 0x01, 82 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 83 val, 84 index, 85 NULL, 86 0, 87 500); 88 gspca_dbg(gspca_dev, D_USBO, "reg_w 0x%x:=0x%02x\n", index, val); 89 if (ret < 0) { 90 pr_err("reg_w 0x%x err %d\n", index, ret); 91 gspca_dev->usb_err = ret; 92 } 93 } 94 95 static void reg_w_mask(struct gspca_dev *gspca_dev, u16 index, u8 val, u8 mask) 96 { 97 val = (reg_r(gspca_dev, index) & ~mask) | (val & mask); 98 reg_w(gspca_dev, index, val); 99 } 100 101 /* this function is called at probe time */ 102 static int sd_config(struct gspca_dev *gspca_dev, 103 const struct usb_device_id *id) 104 { 105 gspca_dev->cam.cam_mode = stk1135_modes; 106 gspca_dev->cam.nmodes = ARRAY_SIZE(stk1135_modes); 107 return 0; 108 } 109 110 static int stk1135_serial_wait_ready(struct gspca_dev *gspca_dev) 111 { 112 int i = 0; 113 u8 val; 114 115 do { 116 val = reg_r(gspca_dev, STK1135_REG_SICTL + 1); 117 if (i++ > 500) { /* maximum retry count */ 118 pr_err("serial bus timeout: status=0x%02x\n", val); 119 return -1; 120 } 121 /* repeat if BUSY or WRITE/READ not finished */ 122 } while ((val & 0x10) || !(val & 0x05)); 123 124 return 0; 125 } 126 127 static u8 sensor_read_8(struct gspca_dev *gspca_dev, u8 addr) 128 { 129 reg_w(gspca_dev, STK1135_REG_SBUSR, addr); 130 /* begin read */ 131 reg_w(gspca_dev, STK1135_REG_SICTL, 0x20); 132 /* wait until finished */ 133 if (stk1135_serial_wait_ready(gspca_dev)) { 134 pr_err("Sensor read failed\n"); 135 return 0; 136 } 137 138 return reg_r(gspca_dev, STK1135_REG_SBUSR + 1); 139 } 140 141 static u16 sensor_read_16(struct gspca_dev *gspca_dev, u8 addr) 142 { 143 return (sensor_read_8(gspca_dev, addr) << 8) | 144 sensor_read_8(gspca_dev, 0xf1); 145 } 146 147 static void sensor_write_8(struct gspca_dev *gspca_dev, u8 addr, u8 data) 148 { 149 /* load address and data registers */ 150 reg_w(gspca_dev, STK1135_REG_SBUSW, addr); 151 reg_w(gspca_dev, STK1135_REG_SBUSW + 1, data); 152 /* begin write */ 153 reg_w(gspca_dev, STK1135_REG_SICTL, 0x01); 154 /* wait until finished */ 155 if (stk1135_serial_wait_ready(gspca_dev)) { 156 pr_err("Sensor write failed\n"); 157 return; 158 } 159 } 160 161 static void sensor_write_16(struct gspca_dev *gspca_dev, u8 addr, u16 data) 162 { 163 sensor_write_8(gspca_dev, addr, data >> 8); 164 sensor_write_8(gspca_dev, 0xf1, data & 0xff); 165 } 166 167 static void sensor_set_page(struct gspca_dev *gspca_dev, u8 page) 168 { 169 struct sd *sd = (struct sd *) gspca_dev; 170 171 if (page != sd->sensor_page) { 172 sensor_write_16(gspca_dev, 0xf0, page); 173 sd->sensor_page = page; 174 } 175 } 176 177 static u16 sensor_read(struct gspca_dev *gspca_dev, u16 reg) 178 { 179 sensor_set_page(gspca_dev, reg >> 8); 180 return sensor_read_16(gspca_dev, reg & 0xff); 181 } 182 183 static void sensor_write(struct gspca_dev *gspca_dev, u16 reg, u16 val) 184 { 185 sensor_set_page(gspca_dev, reg >> 8); 186 sensor_write_16(gspca_dev, reg & 0xff, val); 187 } 188 189 static void sensor_write_mask(struct gspca_dev *gspca_dev, 190 u16 reg, u16 val, u16 mask) 191 { 192 val = (sensor_read(gspca_dev, reg) & ~mask) | (val & mask); 193 sensor_write(gspca_dev, reg, val); 194 } 195 196 struct sensor_val { 197 u16 reg; 198 u16 val; 199 }; 200 201 /* configure MT9M112 sensor */ 202 static void stk1135_configure_mt9m112(struct gspca_dev *gspca_dev) 203 { 204 static const struct sensor_val cfg[] = { 205 /* restart&reset, chip enable, reserved */ 206 { 0x00d, 0x000b }, { 0x00d, 0x0008 }, { 0x035, 0x0022 }, 207 /* mode ctl: AWB on, AE both, clip aper corr, defect corr, AE */ 208 { 0x106, 0x700e }, 209 210 { 0x2dd, 0x18e0 }, /* B-R thresholds, */ 211 212 /* AWB */ 213 { 0x21f, 0x0180 }, /* Cb and Cr limits */ 214 { 0x220, 0xc814 }, { 0x221, 0x8080 }, /* lum limits, RGB gain */ 215 { 0x222, 0xa078 }, { 0x223, 0xa078 }, /* R, B limit */ 216 { 0x224, 0x5f20 }, { 0x228, 0xea02 }, /* mtx adj lim, adv ctl */ 217 { 0x229, 0x867a }, /* wide gates */ 218 219 /* Color correction */ 220 /* imager gains base, delta, delta signs */ 221 { 0x25e, 0x594c }, { 0x25f, 0x4d51 }, { 0x260, 0x0002 }, 222 /* AWB adv ctl 2, gain offs */ 223 { 0x2ef, 0x0008 }, { 0x2f2, 0x0000 }, 224 /* base matrix signs, scale K1-5, K6-9 */ 225 { 0x202, 0x00ee }, { 0x203, 0x3923 }, { 0x204, 0x0724 }, 226 /* base matrix coef */ 227 { 0x209, 0x00cd }, { 0x20a, 0x0093 }, { 0x20b, 0x0004 },/*K1-3*/ 228 { 0x20c, 0x005c }, { 0x20d, 0x00d9 }, { 0x20e, 0x0053 },/*K4-6*/ 229 { 0x20f, 0x0008 }, { 0x210, 0x0091 }, { 0x211, 0x00cf },/*K7-9*/ 230 { 0x215, 0x0000 }, /* delta mtx signs */ 231 /* delta matrix coef */ 232 { 0x216, 0x0000 }, { 0x217, 0x0000 }, { 0x218, 0x0000 },/*D1-3*/ 233 { 0x219, 0x0000 }, { 0x21a, 0x0000 }, { 0x21b, 0x0000 },/*D4-6*/ 234 { 0x21c, 0x0000 }, { 0x21d, 0x0000 }, { 0x21e, 0x0000 },/*D7-9*/ 235 /* enable & disable manual WB to apply color corr. settings */ 236 { 0x106, 0xf00e }, { 0x106, 0x700e }, 237 238 /* Lens shading correction */ 239 { 0x180, 0x0007 }, /* control */ 240 /* vertical knee 0, 2+1, 4+3 */ 241 { 0x181, 0xde13 }, { 0x182, 0xebe2 }, { 0x183, 0x00f6 }, /* R */ 242 { 0x184, 0xe114 }, { 0x185, 0xeadd }, { 0x186, 0xfdf6 }, /* G */ 243 { 0x187, 0xe511 }, { 0x188, 0xede6 }, { 0x189, 0xfbf7 }, /* B */ 244 /* horizontal knee 0, 2+1, 4+3, 5 */ 245 { 0x18a, 0xd613 }, { 0x18b, 0xedec }, /* R .. */ 246 { 0x18c, 0xf9f2 }, { 0x18d, 0x0000 }, /* .. R */ 247 { 0x18e, 0xd815 }, { 0x18f, 0xe9ea }, /* G .. */ 248 { 0x190, 0xf9f1 }, { 0x191, 0x0002 }, /* .. G */ 249 { 0x192, 0xde10 }, { 0x193, 0xefef }, /* B .. */ 250 { 0x194, 0xfbf4 }, { 0x195, 0x0002 }, /* .. B */ 251 /* vertical knee 6+5, 8+7 */ 252 { 0x1b6, 0x0e06 }, { 0x1b7, 0x2713 }, /* R */ 253 { 0x1b8, 0x1106 }, { 0x1b9, 0x2713 }, /* G */ 254 { 0x1ba, 0x0c03 }, { 0x1bb, 0x2a0f }, /* B */ 255 /* horizontal knee 7+6, 9+8, 10 */ 256 { 0x1bc, 0x1208 }, { 0x1bd, 0x1a16 }, { 0x1be, 0x0022 }, /* R */ 257 { 0x1bf, 0x150a }, { 0x1c0, 0x1c1a }, { 0x1c1, 0x002d }, /* G */ 258 { 0x1c2, 0x1109 }, { 0x1c3, 0x1414 }, { 0x1c4, 0x002a }, /* B */ 259 { 0x106, 0x740e }, /* enable lens shading correction */ 260 261 /* Gamma correction - context A */ 262 { 0x153, 0x0b03 }, { 0x154, 0x4722 }, { 0x155, 0xac82 }, 263 { 0x156, 0xdac7 }, { 0x157, 0xf5e9 }, { 0x158, 0xff00 }, 264 /* Gamma correction - context B */ 265 { 0x1dc, 0x0b03 }, { 0x1dd, 0x4722 }, { 0x1de, 0xac82 }, 266 { 0x1df, 0xdac7 }, { 0x1e0, 0xf5e9 }, { 0x1e1, 0xff00 }, 267 268 /* output format: RGB, invert output pixclock, output bayer */ 269 { 0x13a, 0x4300 }, { 0x19b, 0x4300 }, /* for context A, B */ 270 { 0x108, 0x0180 }, /* format control - enable bayer row flip */ 271 272 { 0x22f, 0xd100 }, { 0x29c, 0xd100 }, /* AE A, B */ 273 274 /* default prg conf, prg ctl - by 0x2d2, prg advance - PA1 */ 275 { 0x2d2, 0x0000 }, { 0x2cc, 0x0004 }, { 0x2cb, 0x0001 }, 276 277 { 0x22e, 0x0c3c }, { 0x267, 0x1010 }, /* AE tgt ctl, gain lim */ 278 279 /* PLL */ 280 { 0x065, 0xa000 }, /* clk ctl - enable PLL (clear bit 14) */ 281 { 0x066, 0x2003 }, { 0x067, 0x0501 }, /* PLL M=128, N=3, P=1 */ 282 { 0x065, 0x2000 }, /* disable PLL bypass (clear bit 15) */ 283 284 { 0x005, 0x01b8 }, { 0x007, 0x00d8 }, /* horiz blanking B, A */ 285 286 /* AE line size, shutter delay limit */ 287 { 0x239, 0x06c0 }, { 0x23b, 0x040e }, /* for context A */ 288 { 0x23a, 0x06c0 }, { 0x23c, 0x0564 }, /* for context B */ 289 /* shutter width basis 60Hz, 50Hz */ 290 { 0x257, 0x0208 }, { 0x258, 0x0271 }, /* for context A */ 291 { 0x259, 0x0209 }, { 0x25a, 0x0271 }, /* for context B */ 292 293 { 0x25c, 0x120d }, { 0x25d, 0x1712 }, /* flicker 60Hz, 50Hz */ 294 { 0x264, 0x5e1c }, /* reserved */ 295 /* flicker, AE gain limits, gain zone limits */ 296 { 0x25b, 0x0003 }, { 0x236, 0x7810 }, { 0x237, 0x8304 }, 297 298 { 0x008, 0x0021 }, /* vert blanking A */ 299 }; 300 int i; 301 u16 width, height; 302 303 for (i = 0; i < ARRAY_SIZE(cfg); i++) 304 sensor_write(gspca_dev, cfg[i].reg, cfg[i].val); 305 306 /* set output size */ 307 width = gspca_dev->pixfmt.width; 308 height = gspca_dev->pixfmt.height; 309 if (width <= 640 && height <= 512) { /* context A (half readout speed)*/ 310 sensor_write(gspca_dev, 0x1a7, width); 311 sensor_write(gspca_dev, 0x1aa, height); 312 /* set read mode context A */ 313 sensor_write(gspca_dev, 0x0c8, 0x0000); 314 /* set resize, read mode, vblank, hblank context A */ 315 sensor_write(gspca_dev, 0x2c8, 0x0000); 316 } else { /* context B (full readout speed) */ 317 sensor_write(gspca_dev, 0x1a1, width); 318 sensor_write(gspca_dev, 0x1a4, height); 319 /* set read mode context B */ 320 sensor_write(gspca_dev, 0x0c8, 0x0008); 321 /* set resize, read mode, vblank, hblank context B */ 322 sensor_write(gspca_dev, 0x2c8, 0x040b); 323 } 324 } 325 326 static void stk1135_configure_clock(struct gspca_dev *gspca_dev) 327 { 328 /* configure SCLKOUT */ 329 reg_w(gspca_dev, STK1135_REG_TMGEN, 0x12); 330 /* set 1 clock per pixel */ 331 /* and positive edge clocked pulse high when pixel counter = 0 */ 332 reg_w(gspca_dev, STK1135_REG_TCP1 + 0, 0x41); 333 reg_w(gspca_dev, STK1135_REG_TCP1 + 1, 0x00); 334 reg_w(gspca_dev, STK1135_REG_TCP1 + 2, 0x00); 335 reg_w(gspca_dev, STK1135_REG_TCP1 + 3, 0x00); 336 337 /* enable CLKOUT for sensor */ 338 reg_w(gspca_dev, STK1135_REG_SENSO + 0, 0x10); 339 /* disable STOP clock */ 340 reg_w(gspca_dev, STK1135_REG_SENSO + 1, 0x00); 341 /* set lower 8 bits of PLL feedback divider */ 342 reg_w(gspca_dev, STK1135_REG_SENSO + 3, 0x07); 343 /* set other PLL parameters */ 344 reg_w(gspca_dev, STK1135_REG_PLLFD, 0x06); 345 /* enable timing generator */ 346 reg_w(gspca_dev, STK1135_REG_TMGEN, 0x80); 347 /* enable PLL */ 348 reg_w(gspca_dev, STK1135_REG_SENSO + 2, 0x04); 349 350 /* set serial interface clock divider (30MHz/0x1f*16+2) = 60240 kHz) */ 351 reg_w(gspca_dev, STK1135_REG_SICTL + 2, 0x1f); 352 353 /* wait a while for sensor to catch up */ 354 udelay(1000); 355 } 356 357 static void stk1135_camera_disable(struct gspca_dev *gspca_dev) 358 { 359 /* set capture end Y position to 0 */ 360 reg_w(gspca_dev, STK1135_REG_CIEPO + 2, 0x00); 361 reg_w(gspca_dev, STK1135_REG_CIEPO + 3, 0x00); 362 /* disable capture */ 363 reg_w_mask(gspca_dev, STK1135_REG_SCTRL, 0x00, 0x80); 364 365 /* enable sensor standby and diasble chip enable */ 366 sensor_write_mask(gspca_dev, 0x00d, 0x0004, 0x000c); 367 368 /* disable PLL */ 369 reg_w_mask(gspca_dev, STK1135_REG_SENSO + 2, 0x00, 0x01); 370 /* disable timing generator */ 371 reg_w(gspca_dev, STK1135_REG_TMGEN, 0x00); 372 /* enable STOP clock */ 373 reg_w(gspca_dev, STK1135_REG_SENSO + 1, 0x20); 374 /* disable CLKOUT for sensor */ 375 reg_w(gspca_dev, STK1135_REG_SENSO, 0x00); 376 377 /* disable sensor (GPIO5) and enable GPIO0,3,6 (?) - sensor standby? */ 378 reg_w(gspca_dev, STK1135_REG_GCTRL, 0x49); 379 } 380 381 /* this function is called at probe and resume time */ 382 static int sd_init(struct gspca_dev *gspca_dev) 383 { 384 u16 sensor_id; 385 char *sensor_name; 386 struct sd *sd = (struct sd *) gspca_dev; 387 388 /* set GPIO3,4,5,6 direction to output */ 389 reg_w(gspca_dev, STK1135_REG_GCTRL + 2, 0x78); 390 /* enable sensor (GPIO5) */ 391 reg_w(gspca_dev, STK1135_REG_GCTRL, (1 << 5)); 392 /* disable ROM interface */ 393 reg_w(gspca_dev, STK1135_REG_GCTRL + 3, 0x80); 394 /* enable interrupts from GPIO8 (flip sensor) and GPIO9 (???) */ 395 reg_w(gspca_dev, STK1135_REG_ICTRL + 1, 0x00); 396 reg_w(gspca_dev, STK1135_REG_ICTRL + 3, 0x03); 397 /* enable remote wakeup from GPIO9 (???) */ 398 reg_w(gspca_dev, STK1135_REG_RMCTL + 1, 0x00); 399 reg_w(gspca_dev, STK1135_REG_RMCTL + 3, 0x02); 400 401 /* reset serial interface */ 402 reg_w(gspca_dev, STK1135_REG_SICTL, 0x80); 403 reg_w(gspca_dev, STK1135_REG_SICTL, 0x00); 404 /* set sensor address */ 405 reg_w(gspca_dev, STK1135_REG_SICTL + 3, 0xba); 406 /* disable alt 2-wire serial interface */ 407 reg_w(gspca_dev, STK1135_REG_ASIC + 3, 0x00); 408 409 stk1135_configure_clock(gspca_dev); 410 411 /* read sensor ID */ 412 sd->sensor_page = 0xff; 413 sensor_id = sensor_read(gspca_dev, 0x000); 414 415 switch (sensor_id) { 416 case 0x148c: 417 sensor_name = "MT9M112"; 418 break; 419 default: 420 sensor_name = "unknown"; 421 } 422 pr_info("Detected sensor type %s (0x%x)\n", sensor_name, sensor_id); 423 424 stk1135_camera_disable(gspca_dev); 425 426 return gspca_dev->usb_err; 427 } 428 429 /* -- start the camera -- */ 430 static int sd_start(struct gspca_dev *gspca_dev) 431 { 432 struct sd *sd = (struct sd *) gspca_dev; 433 u16 width, height; 434 435 /* enable sensor (GPIO5) */ 436 reg_w(gspca_dev, STK1135_REG_GCTRL, (1 << 5)); 437 438 stk1135_configure_clock(gspca_dev); 439 440 /* set capture start position X = 0, Y = 0 */ 441 reg_w(gspca_dev, STK1135_REG_CISPO + 0, 0x00); 442 reg_w(gspca_dev, STK1135_REG_CISPO + 1, 0x00); 443 reg_w(gspca_dev, STK1135_REG_CISPO + 2, 0x00); 444 reg_w(gspca_dev, STK1135_REG_CISPO + 3, 0x00); 445 446 /* set capture end position */ 447 width = gspca_dev->pixfmt.width; 448 height = gspca_dev->pixfmt.height; 449 reg_w(gspca_dev, STK1135_REG_CIEPO + 0, width & 0xff); 450 reg_w(gspca_dev, STK1135_REG_CIEPO + 1, width >> 8); 451 reg_w(gspca_dev, STK1135_REG_CIEPO + 2, height & 0xff); 452 reg_w(gspca_dev, STK1135_REG_CIEPO + 3, height >> 8); 453 454 /* set 8-bit mode */ 455 reg_w(gspca_dev, STK1135_REG_SCTRL, 0x20); 456 457 stk1135_configure_mt9m112(gspca_dev); 458 459 /* enable capture */ 460 reg_w_mask(gspca_dev, STK1135_REG_SCTRL, 0x80, 0x80); 461 462 if (gspca_dev->usb_err >= 0) 463 gspca_dbg(gspca_dev, D_STREAM, "camera started alt: 0x%02x\n", 464 gspca_dev->alt); 465 466 sd->pkt_seq = 0; 467 468 return gspca_dev->usb_err; 469 } 470 471 static void sd_stopN(struct gspca_dev *gspca_dev) 472 { 473 struct usb_device *dev = gspca_dev->dev; 474 475 usb_set_interface(dev, gspca_dev->iface, 0); 476 477 stk1135_camera_disable(gspca_dev); 478 479 gspca_dbg(gspca_dev, D_STREAM, "camera stopped\n"); 480 } 481 482 static void sd_pkt_scan(struct gspca_dev *gspca_dev, 483 u8 *data, /* isoc packet */ 484 int len) /* iso packet length */ 485 { 486 struct sd *sd = (struct sd *) gspca_dev; 487 int skip = sizeof(struct stk1135_pkt_header); 488 bool flip; 489 enum gspca_packet_type pkt_type = INTER_PACKET; 490 struct stk1135_pkt_header *hdr = (void *)data; 491 u8 seq; 492 493 if (len < 4) { 494 gspca_dbg(gspca_dev, D_PACK, "received short packet (less than 4 bytes)\n"); 495 return; 496 } 497 498 /* GPIO 8 is flip sensor (1 = normal position, 0 = flipped to back) */ 499 flip = !(le16_to_cpu(hdr->gpio) & (1 << 8)); 500 /* it's a switch, needs software debounce */ 501 if (sd->flip_status != flip) 502 sd->flip_debounce++; 503 else 504 sd->flip_debounce = 0; 505 506 /* check sequence number (not present in new frame packets) */ 507 if (!(hdr->flags & STK1135_HDR_FRAME_START)) { 508 seq = hdr->seq & STK1135_HDR_SEQ_MASK; 509 if (seq != sd->pkt_seq) { 510 gspca_dbg(gspca_dev, D_PACK, "received out-of-sequence packet\n"); 511 /* resync sequence and discard packet */ 512 sd->pkt_seq = seq; 513 gspca_dev->last_packet_type = DISCARD_PACKET; 514 return; 515 } 516 } 517 sd->pkt_seq++; 518 if (sd->pkt_seq > STK1135_HDR_SEQ_MASK) 519 sd->pkt_seq = 0; 520 521 if (len == sizeof(struct stk1135_pkt_header)) 522 return; 523 524 if (hdr->flags & STK1135_HDR_FRAME_START) { /* new frame */ 525 skip = 8; /* the header is longer */ 526 gspca_frame_add(gspca_dev, LAST_PACKET, data, 0); 527 pkt_type = FIRST_PACKET; 528 } 529 gspca_frame_add(gspca_dev, pkt_type, data + skip, len - skip); 530 } 531 532 static void sethflip(struct gspca_dev *gspca_dev, s32 val) 533 { 534 struct sd *sd = (struct sd *) gspca_dev; 535 536 if (sd->flip_status) 537 val = !val; 538 sensor_write_mask(gspca_dev, 0x020, val ? 0x0002 : 0x0000 , 0x0002); 539 } 540 541 static void setvflip(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 ? 0x0001 : 0x0000 , 0x0001); 548 } 549 550 static void stk1135_dq_callback(struct gspca_dev *gspca_dev) 551 { 552 struct sd *sd = (struct sd *) gspca_dev; 553 554 if (sd->flip_debounce > 100) { 555 sd->flip_status = !sd->flip_status; 556 sethflip(gspca_dev, v4l2_ctrl_g_ctrl(sd->hflip)); 557 setvflip(gspca_dev, v4l2_ctrl_g_ctrl(sd->vflip)); 558 } 559 } 560 561 static int sd_s_ctrl(struct v4l2_ctrl *ctrl) 562 { 563 struct gspca_dev *gspca_dev = 564 container_of(ctrl->handler, struct gspca_dev, ctrl_handler); 565 566 gspca_dev->usb_err = 0; 567 568 if (!gspca_dev->streaming) 569 return 0; 570 571 switch (ctrl->id) { 572 case V4L2_CID_HFLIP: 573 sethflip(gspca_dev, ctrl->val); 574 break; 575 case V4L2_CID_VFLIP: 576 setvflip(gspca_dev, ctrl->val); 577 break; 578 } 579 580 return gspca_dev->usb_err; 581 } 582 583 static const struct v4l2_ctrl_ops sd_ctrl_ops = { 584 .s_ctrl = sd_s_ctrl, 585 }; 586 587 static int sd_init_controls(struct gspca_dev *gspca_dev) 588 { 589 struct sd *sd = (struct sd *) gspca_dev; 590 struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler; 591 592 gspca_dev->vdev.ctrl_handler = hdl; 593 v4l2_ctrl_handler_init(hdl, 2); 594 sd->hflip = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, 595 V4L2_CID_HFLIP, 0, 1, 1, 0); 596 sd->vflip = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, 597 V4L2_CID_VFLIP, 0, 1, 1, 0); 598 599 if (hdl->error) { 600 pr_err("Could not initialize controls\n"); 601 return hdl->error; 602 } 603 return 0; 604 } 605 606 static void stk1135_try_fmt(struct gspca_dev *gspca_dev, struct v4l2_format *fmt) 607 { 608 fmt->fmt.pix.width = clamp(fmt->fmt.pix.width, 32U, 1280U); 609 fmt->fmt.pix.height = clamp(fmt->fmt.pix.height, 32U, 1024U); 610 /* round up to even numbers */ 611 fmt->fmt.pix.width += (fmt->fmt.pix.width & 1); 612 fmt->fmt.pix.height += (fmt->fmt.pix.height & 1); 613 614 fmt->fmt.pix.bytesperline = fmt->fmt.pix.width; 615 fmt->fmt.pix.sizeimage = fmt->fmt.pix.width * fmt->fmt.pix.height; 616 } 617 618 static int stk1135_enum_framesizes(struct gspca_dev *gspca_dev, 619 struct v4l2_frmsizeenum *fsize) 620 { 621 if (fsize->index != 0 || fsize->pixel_format != V4L2_PIX_FMT_SBGGR8) 622 return -EINVAL; 623 624 fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE; 625 fsize->stepwise.min_width = 32; 626 fsize->stepwise.min_height = 32; 627 fsize->stepwise.max_width = 1280; 628 fsize->stepwise.max_height = 1024; 629 fsize->stepwise.step_width = 2; 630 fsize->stepwise.step_height = 2; 631 632 return 0; 633 } 634 635 /* sub-driver description */ 636 static const struct sd_desc sd_desc = { 637 .name = MODULE_NAME, 638 .config = sd_config, 639 .init = sd_init, 640 .init_controls = sd_init_controls, 641 .start = sd_start, 642 .stopN = sd_stopN, 643 .pkt_scan = sd_pkt_scan, 644 .dq_callback = stk1135_dq_callback, 645 .try_fmt = stk1135_try_fmt, 646 .enum_framesizes = stk1135_enum_framesizes, 647 }; 648 649 /* -- module initialisation -- */ 650 static const struct usb_device_id device_table[] = { 651 {USB_DEVICE(0x174f, 0x6a31)}, /* ASUS laptop, MT9M112 sensor */ 652 {} 653 }; 654 MODULE_DEVICE_TABLE(usb, device_table); 655 656 /* -- device connect -- */ 657 static int sd_probe(struct usb_interface *intf, 658 const struct usb_device_id *id) 659 { 660 return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd), 661 THIS_MODULE); 662 } 663 664 static struct usb_driver sd_driver = { 665 .name = MODULE_NAME, 666 .id_table = device_table, 667 .probe = sd_probe, 668 .disconnect = gspca_disconnect, 669 #ifdef CONFIG_PM 670 .suspend = gspca_suspend, 671 .resume = gspca_resume, 672 .reset_resume = gspca_resume, 673 #endif 674 }; 675 676 module_usb_driver(sd_driver); 677