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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Syntek STK1135 subdriver4 *5 * Copyright (c) 2013 Ondrej Zary6 *7 * Based on Syntekdriver (stk11xx) by Nicolas VIVIEN:8 * http://syntekdriver.sourceforge.net9 */10 11#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt12 13#define MODULE_NAME "stk1135"14 15#include "gspca.h"16#include "stk1135.h"17 18MODULE_AUTHOR("Ondrej Zary");19MODULE_DESCRIPTION("Syntek STK1135 USB Camera Driver");20MODULE_LICENSE("GPL");21 22 23/* specific webcam descriptor */24struct 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 37static 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 -- */46static 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 -- */73static 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 95static 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 */102static 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 110static 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 127static 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 141static 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 147static 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 161static 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 167static 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 177static 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 183static 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 189static 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 196struct sensor_val {197 u16 reg;198 u16 val;199};200 201/* configure MT9M112 sensor */202static 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 326static 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 357static 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 */382static 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 -- */430static 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 471static 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 482static 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 else504 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 532static 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 541static 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 550static 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 561static 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 583static const struct v4l2_ctrl_ops sd_ctrl_ops = {584 .s_ctrl = sd_s_ctrl,585};586 587static 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 606static 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 618static 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 */636static 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 -- */650static const struct usb_device_id device_table[] = {651 {USB_DEVICE(0x174f, 0x6a31)}, /* ASUS laptop, MT9M112 sensor */652 {}653};654MODULE_DEVICE_TABLE(usb, device_table);655 656/* -- device connect -- */657static 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 664static 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_PM670 .suspend = gspca_suspend,671 .resume = gspca_resume,672 .reset_resume = gspca_resume,673#endif674};675 676module_usb_driver(sd_driver);677