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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Syntek DV4000 (STK014) subdriver4 *5 * Copyright (C) 2008 Jean-Francois Moine (http://moinejf.free.fr)6 */7 8#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt9 10#define MODULE_NAME "stk014"11 12#include "gspca.h"13#include "jpeg.h"14 15MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");16MODULE_DESCRIPTION("Syntek DV4000 (STK014) USB Camera Driver");17MODULE_LICENSE("GPL");18 19#define QUALITY 5020 21/* specific webcam descriptor */22struct sd {23 struct gspca_dev gspca_dev; /* !! must be the first item */24 u8 jpeg_hdr[JPEG_HDR_SZ];25};26 27static const struct v4l2_pix_format vga_mode[] = {28 {320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,29 .bytesperline = 320,30 .sizeimage = 320 * 240 * 3 / 8 + 590,31 .colorspace = V4L2_COLORSPACE_JPEG,32 .priv = 1},33 {640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,34 .bytesperline = 640,35 .sizeimage = 640 * 480 * 3 / 8 + 590,36 .colorspace = V4L2_COLORSPACE_JPEG,37 .priv = 0},38};39 40/* -- read a register -- */41static u8 reg_r(struct gspca_dev *gspca_dev,42 __u16 index)43{44 struct usb_device *dev = gspca_dev->dev;45 int ret;46 47 if (gspca_dev->usb_err < 0)48 return 0;49 ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),50 0x00,51 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,52 0x00,53 index,54 gspca_dev->usb_buf, 1,55 500);56 if (ret < 0) {57 pr_err("reg_r err %d\n", ret);58 gspca_dev->usb_err = ret;59 return 0;60 }61 return gspca_dev->usb_buf[0];62}63 64/* -- write a register -- */65static void reg_w(struct gspca_dev *gspca_dev,66 __u16 index, __u16 value)67{68 struct usb_device *dev = gspca_dev->dev;69 int ret;70 71 if (gspca_dev->usb_err < 0)72 return;73 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),74 0x01,75 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,76 value,77 index,78 NULL,79 0,80 500);81 if (ret < 0) {82 pr_err("reg_w err %d\n", ret);83 gspca_dev->usb_err = ret;84 }85}86 87/* -- get a bulk value (4 bytes) -- */88static void rcv_val(struct gspca_dev *gspca_dev,89 int ads)90{91 struct usb_device *dev = gspca_dev->dev;92 int alen, ret;93 94 reg_w(gspca_dev, 0x634, (ads >> 16) & 0xff);95 reg_w(gspca_dev, 0x635, (ads >> 8) & 0xff);96 reg_w(gspca_dev, 0x636, ads & 0xff);97 reg_w(gspca_dev, 0x637, 0);98 reg_w(gspca_dev, 0x638, 4); /* len & 0xff */99 reg_w(gspca_dev, 0x639, 0); /* len >> 8 */100 reg_w(gspca_dev, 0x63a, 0);101 reg_w(gspca_dev, 0x63b, 0);102 reg_w(gspca_dev, 0x630, 5);103 if (gspca_dev->usb_err < 0)104 return;105 ret = usb_bulk_msg(dev,106 usb_rcvbulkpipe(dev, 0x05),107 gspca_dev->usb_buf,108 4, /* length */109 &alen,110 500); /* timeout in milliseconds */111 if (ret < 0) {112 pr_err("rcv_val err %d\n", ret);113 gspca_dev->usb_err = ret;114 }115}116 117/* -- send a bulk value -- */118static void snd_val(struct gspca_dev *gspca_dev,119 int ads,120 unsigned int val)121{122 struct usb_device *dev = gspca_dev->dev;123 int alen, ret;124 __u8 seq = 0;125 126 if (ads == 0x003f08) {127 reg_r(gspca_dev, 0x0704);128 seq = reg_r(gspca_dev, 0x0705);129 reg_r(gspca_dev, 0x0650);130 reg_w(gspca_dev, 0x654, seq);131 } else {132 reg_w(gspca_dev, 0x654, (ads >> 16) & 0xff);133 }134 reg_w(gspca_dev, 0x655, (ads >> 8) & 0xff);135 reg_w(gspca_dev, 0x656, ads & 0xff);136 reg_w(gspca_dev, 0x657, 0);137 reg_w(gspca_dev, 0x658, 0x04); /* size */138 reg_w(gspca_dev, 0x659, 0);139 reg_w(gspca_dev, 0x65a, 0);140 reg_w(gspca_dev, 0x65b, 0);141 reg_w(gspca_dev, 0x650, 5);142 if (gspca_dev->usb_err < 0)143 return;144 gspca_dev->usb_buf[0] = val >> 24;145 gspca_dev->usb_buf[1] = val >> 16;146 gspca_dev->usb_buf[2] = val >> 8;147 gspca_dev->usb_buf[3] = val;148 ret = usb_bulk_msg(dev,149 usb_sndbulkpipe(dev, 6),150 gspca_dev->usb_buf,151 4,152 &alen,153 500); /* timeout in milliseconds */154 if (ret < 0) {155 pr_err("snd_val err %d\n", ret);156 gspca_dev->usb_err = ret;157 } else {158 if (ads == 0x003f08) {159 seq += 4;160 seq &= 0x3f;161 reg_w(gspca_dev, 0x705, seq);162 }163 }164}165 166/* set a camera parameter */167static void set_par(struct gspca_dev *gspca_dev,168 int parval)169{170 snd_val(gspca_dev, 0x003f08, parval);171}172 173static void setbrightness(struct gspca_dev *gspca_dev, s32 val)174{175 int parval;176 177 parval = 0x06000000 /* whiteness */178 + (val << 16);179 set_par(gspca_dev, parval);180}181 182static void setcontrast(struct gspca_dev *gspca_dev, s32 val)183{184 int parval;185 186 parval = 0x07000000 /* contrast */187 + (val << 16);188 set_par(gspca_dev, parval);189}190 191static void setcolors(struct gspca_dev *gspca_dev, s32 val)192{193 int parval;194 195 parval = 0x08000000 /* saturation */196 + (val << 16);197 set_par(gspca_dev, parval);198}199 200static void setlightfreq(struct gspca_dev *gspca_dev, s32 val)201{202 set_par(gspca_dev, val == 1203 ? 0x33640000 /* 50 Hz */204 : 0x33780000); /* 60 Hz */205}206 207/* this function is called at probe time */208static int sd_config(struct gspca_dev *gspca_dev,209 const struct usb_device_id *id)210{211 gspca_dev->cam.cam_mode = vga_mode;212 gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode);213 return 0;214}215 216/* this function is called at probe and resume time */217static int sd_init(struct gspca_dev *gspca_dev)218{219 u8 ret;220 221 /* check if the device responds */222 usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);223 ret = reg_r(gspca_dev, 0x0740);224 if (gspca_dev->usb_err >= 0) {225 if (ret != 0xff) {226 pr_err("init reg: 0x%02x\n", ret);227 gspca_dev->usb_err = -EIO;228 }229 }230 return gspca_dev->usb_err;231}232 233/* -- start the camera -- */234static int sd_start(struct gspca_dev *gspca_dev)235{236 struct sd *sd = (struct sd *) gspca_dev;237 int ret, value;238 239 /* create the JPEG header */240 jpeg_define(sd->jpeg_hdr, gspca_dev->pixfmt.height,241 gspca_dev->pixfmt.width,242 0x22); /* JPEG 411 */243 jpeg_set_qual(sd->jpeg_hdr, QUALITY);244 245 /* work on alternate 1 */246 usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);247 248 set_par(gspca_dev, 0x10000000);249 set_par(gspca_dev, 0x00000000);250 set_par(gspca_dev, 0x8002e001);251 set_par(gspca_dev, 0x14000000);252 if (gspca_dev->pixfmt.width > 320)253 value = 0x8002e001; /* 640x480 */254 else255 value = 0x4001f000; /* 320x240 */256 set_par(gspca_dev, value);257 ret = usb_set_interface(gspca_dev->dev,258 gspca_dev->iface,259 gspca_dev->alt);260 if (ret < 0) {261 pr_err("set intf %d %d failed\n",262 gspca_dev->iface, gspca_dev->alt);263 gspca_dev->usb_err = ret;264 goto out;265 }266 reg_r(gspca_dev, 0x0630);267 rcv_val(gspca_dev, 0x000020); /* << (value ff ff ff ff) */268 reg_r(gspca_dev, 0x0650);269 snd_val(gspca_dev, 0x000020, 0xffffffff);270 reg_w(gspca_dev, 0x0620, 0);271 reg_w(gspca_dev, 0x0630, 0);272 reg_w(gspca_dev, 0x0640, 0);273 reg_w(gspca_dev, 0x0650, 0);274 reg_w(gspca_dev, 0x0660, 0);275 set_par(gspca_dev, 0x09800000); /* Red ? */276 set_par(gspca_dev, 0x0a800000); /* Green ? */277 set_par(gspca_dev, 0x0b800000); /* Blue ? */278 set_par(gspca_dev, 0x0d030000); /* Gamma ? */279 280 /* start the video flow */281 set_par(gspca_dev, 0x01000000);282 set_par(gspca_dev, 0x01000000);283 if (gspca_dev->usb_err >= 0)284 gspca_dbg(gspca_dev, D_STREAM, "camera started alt: 0x%02x\n",285 gspca_dev->alt);286out:287 return gspca_dev->usb_err;288}289 290static void sd_stopN(struct gspca_dev *gspca_dev)291{292 struct usb_device *dev = gspca_dev->dev;293 294 set_par(gspca_dev, 0x02000000);295 set_par(gspca_dev, 0x02000000);296 usb_set_interface(dev, gspca_dev->iface, 1);297 reg_r(gspca_dev, 0x0630);298 rcv_val(gspca_dev, 0x000020); /* << (value ff ff ff ff) */299 reg_r(gspca_dev, 0x0650);300 snd_val(gspca_dev, 0x000020, 0xffffffff);301 reg_w(gspca_dev, 0x0620, 0);302 reg_w(gspca_dev, 0x0630, 0);303 reg_w(gspca_dev, 0x0640, 0);304 reg_w(gspca_dev, 0x0650, 0);305 reg_w(gspca_dev, 0x0660, 0);306 gspca_dbg(gspca_dev, D_STREAM, "camera stopped\n");307}308 309static 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 unsigned char ffd9[] = {0xff, 0xd9};315 316 /* a frame starts with:317 * - 0xff 0xfe318 * - 0x08 0x00 - length (little endian ?!)319 * - 4 bytes = size of whole frame (BE - including header)320 * - 0x00 0x0c321 * - 0xff 0xd8322 * - .. JPEG image with escape sequences (ff 00)323 * (without ending - ff d9)324 */325 if (data[0] == 0xff && data[1] == 0xfe) {326 gspca_frame_add(gspca_dev, LAST_PACKET,327 ffd9, 2);328 329 /* put the JPEG 411 header */330 gspca_frame_add(gspca_dev, FIRST_PACKET,331 sd->jpeg_hdr, JPEG_HDR_SZ);332 333 /* beginning of the frame */334#define STKHDRSZ 12335 data += STKHDRSZ;336 len -= STKHDRSZ;337 }338 gspca_frame_add(gspca_dev, INTER_PACKET, data, len);339}340 341static int sd_s_ctrl(struct v4l2_ctrl *ctrl)342{343 struct gspca_dev *gspca_dev =344 container_of(ctrl->handler, struct gspca_dev, ctrl_handler);345 346 gspca_dev->usb_err = 0;347 348 if (!gspca_dev->streaming)349 return 0;350 351 switch (ctrl->id) {352 case V4L2_CID_BRIGHTNESS:353 setbrightness(gspca_dev, ctrl->val);354 break;355 case V4L2_CID_CONTRAST:356 setcontrast(gspca_dev, ctrl->val);357 break;358 case V4L2_CID_SATURATION:359 setcolors(gspca_dev, ctrl->val);360 break;361 case V4L2_CID_POWER_LINE_FREQUENCY:362 setlightfreq(gspca_dev, ctrl->val);363 break;364 }365 return gspca_dev->usb_err;366}367 368static const struct v4l2_ctrl_ops sd_ctrl_ops = {369 .s_ctrl = sd_s_ctrl,370};371 372static int sd_init_controls(struct gspca_dev *gspca_dev)373{374 struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;375 376 gspca_dev->vdev.ctrl_handler = hdl;377 v4l2_ctrl_handler_init(hdl, 4);378 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,379 V4L2_CID_BRIGHTNESS, 0, 255, 1, 127);380 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,381 V4L2_CID_CONTRAST, 0, 255, 1, 127);382 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,383 V4L2_CID_SATURATION, 0, 255, 1, 127);384 v4l2_ctrl_new_std_menu(hdl, &sd_ctrl_ops,385 V4L2_CID_POWER_LINE_FREQUENCY,386 V4L2_CID_POWER_LINE_FREQUENCY_60HZ, 1,387 V4L2_CID_POWER_LINE_FREQUENCY_50HZ);388 389 if (hdl->error) {390 pr_err("Could not initialize controls\n");391 return hdl->error;392 }393 return 0;394}395 396/* sub-driver description */397static const struct sd_desc sd_desc = {398 .name = MODULE_NAME,399 .config = sd_config,400 .init = sd_init,401 .init_controls = sd_init_controls,402 .start = sd_start,403 .stopN = sd_stopN,404 .pkt_scan = sd_pkt_scan,405};406 407/* -- module initialisation -- */408static const struct usb_device_id device_table[] = {409 {USB_DEVICE(0x05e1, 0x0893)},410 {}411};412MODULE_DEVICE_TABLE(usb, device_table);413 414/* -- device connect -- */415static int sd_probe(struct usb_interface *intf,416 const struct usb_device_id *id)417{418 return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),419 THIS_MODULE);420}421 422static struct usb_driver sd_driver = {423 .name = MODULE_NAME,424 .id_table = device_table,425 .probe = sd_probe,426 .disconnect = gspca_disconnect,427#ifdef CONFIG_PM428 .suspend = gspca_suspend,429 .resume = gspca_resume,430 .reset_resume = gspca_resume,431#endif432};433 434module_usb_driver(sd_driver);435