2 * Syntek DV4000 (STK014) subdriver
4 * Copyright (C) 2008 Jean-Francois Moine (http://moinejf.free.fr)
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
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.
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
21 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
23 #define MODULE_NAME "stk014"
28 MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
29 MODULE_DESCRIPTION("Syntek DV4000 (STK014) USB Camera Driver");
30 MODULE_LICENSE("GPL");
34 /* specific webcam descriptor */
36 struct gspca_dev gspca_dev; /* !! must be the first item */
37 u8 jpeg_hdr[JPEG_HDR_SZ];
40 static const struct v4l2_pix_format vga_mode[] = {
41 {320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
43 .sizeimage = 320 * 240 * 3 / 8 + 590,
44 .colorspace = V4L2_COLORSPACE_JPEG,
46 {640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
48 .sizeimage = 640 * 480 * 3 / 8 + 590,
49 .colorspace = V4L2_COLORSPACE_JPEG,
53 /* -- read a register -- */
54 static u8 reg_r(struct gspca_dev *gspca_dev,
57 struct usb_device *dev = gspca_dev->dev;
60 if (gspca_dev->usb_err < 0)
62 ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
64 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
67 gspca_dev->usb_buf, 1,
70 pr_err("reg_r err %d\n", ret);
71 gspca_dev->usb_err = ret;
74 return gspca_dev->usb_buf[0];
77 /* -- write a register -- */
78 static void reg_w(struct gspca_dev *gspca_dev,
79 __u16 index, __u16 value)
81 struct usb_device *dev = gspca_dev->dev;
84 if (gspca_dev->usb_err < 0)
86 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
88 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
95 pr_err("reg_w err %d\n", ret);
96 gspca_dev->usb_err = ret;
100 /* -- get a bulk value (4 bytes) -- */
101 static void rcv_val(struct gspca_dev *gspca_dev,
104 struct usb_device *dev = gspca_dev->dev;
107 reg_w(gspca_dev, 0x634, (ads >> 16) & 0xff);
108 reg_w(gspca_dev, 0x635, (ads >> 8) & 0xff);
109 reg_w(gspca_dev, 0x636, ads & 0xff);
110 reg_w(gspca_dev, 0x637, 0);
111 reg_w(gspca_dev, 0x638, 4); /* len & 0xff */
112 reg_w(gspca_dev, 0x639, 0); /* len >> 8 */
113 reg_w(gspca_dev, 0x63a, 0);
114 reg_w(gspca_dev, 0x63b, 0);
115 reg_w(gspca_dev, 0x630, 5);
116 if (gspca_dev->usb_err < 0)
118 ret = usb_bulk_msg(dev,
119 usb_rcvbulkpipe(dev, 0x05),
123 500); /* timeout in milliseconds */
125 pr_err("rcv_val err %d\n", ret);
126 gspca_dev->usb_err = ret;
130 /* -- send a bulk value -- */
131 static void snd_val(struct gspca_dev *gspca_dev,
135 struct usb_device *dev = gspca_dev->dev;
139 if (ads == 0x003f08) {
140 reg_r(gspca_dev, 0x0704);
141 seq = reg_r(gspca_dev, 0x0705);
142 reg_r(gspca_dev, 0x0650);
143 reg_w(gspca_dev, 0x654, seq);
145 reg_w(gspca_dev, 0x654, (ads >> 16) & 0xff);
147 reg_w(gspca_dev, 0x655, (ads >> 8) & 0xff);
148 reg_w(gspca_dev, 0x656, ads & 0xff);
149 reg_w(gspca_dev, 0x657, 0);
150 reg_w(gspca_dev, 0x658, 0x04); /* size */
151 reg_w(gspca_dev, 0x659, 0);
152 reg_w(gspca_dev, 0x65a, 0);
153 reg_w(gspca_dev, 0x65b, 0);
154 reg_w(gspca_dev, 0x650, 5);
155 if (gspca_dev->usb_err < 0)
157 gspca_dev->usb_buf[0] = val >> 24;
158 gspca_dev->usb_buf[1] = val >> 16;
159 gspca_dev->usb_buf[2] = val >> 8;
160 gspca_dev->usb_buf[3] = val;
161 ret = usb_bulk_msg(dev,
162 usb_sndbulkpipe(dev, 6),
166 500); /* timeout in milliseconds */
168 pr_err("snd_val err %d\n", ret);
169 gspca_dev->usb_err = ret;
171 if (ads == 0x003f08) {
174 reg_w(gspca_dev, 0x705, seq);
179 /* set a camera parameter */
180 static void set_par(struct gspca_dev *gspca_dev,
183 snd_val(gspca_dev, 0x003f08, parval);
186 static void setbrightness(struct gspca_dev *gspca_dev, s32 val)
190 parval = 0x06000000 /* whiteness */
192 set_par(gspca_dev, parval);
195 static void setcontrast(struct gspca_dev *gspca_dev, s32 val)
199 parval = 0x07000000 /* contrast */
201 set_par(gspca_dev, parval);
204 static void setcolors(struct gspca_dev *gspca_dev, s32 val)
208 parval = 0x08000000 /* saturation */
210 set_par(gspca_dev, parval);
213 static void setlightfreq(struct gspca_dev *gspca_dev, s32 val)
215 set_par(gspca_dev, val == 1
216 ? 0x33640000 /* 50 Hz */
217 : 0x33780000); /* 60 Hz */
220 /* this function is called at probe time */
221 static int sd_config(struct gspca_dev *gspca_dev,
222 const struct usb_device_id *id)
224 gspca_dev->cam.cam_mode = vga_mode;
225 gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode);
229 /* this function is called at probe and resume time */
230 static int sd_init(struct gspca_dev *gspca_dev)
234 /* check if the device responds */
235 usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
236 ret = reg_r(gspca_dev, 0x0740);
237 if (gspca_dev->usb_err >= 0) {
239 pr_err("init reg: 0x%02x\n", ret);
240 gspca_dev->usb_err = -EIO;
243 return gspca_dev->usb_err;
246 /* -- start the camera -- */
247 static int sd_start(struct gspca_dev *gspca_dev)
249 struct sd *sd = (struct sd *) gspca_dev;
252 /* create the JPEG header */
253 jpeg_define(sd->jpeg_hdr, gspca_dev->height, gspca_dev->width,
254 0x22); /* JPEG 411 */
255 jpeg_set_qual(sd->jpeg_hdr, QUALITY);
257 /* work on alternate 1 */
258 usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
260 set_par(gspca_dev, 0x10000000);
261 set_par(gspca_dev, 0x00000000);
262 set_par(gspca_dev, 0x8002e001);
263 set_par(gspca_dev, 0x14000000);
264 if (gspca_dev->width > 320)
265 value = 0x8002e001; /* 640x480 */
267 value = 0x4001f000; /* 320x240 */
268 set_par(gspca_dev, value);
269 ret = usb_set_interface(gspca_dev->dev,
273 pr_err("set intf %d %d failed\n",
274 gspca_dev->iface, gspca_dev->alt);
275 gspca_dev->usb_err = ret;
278 reg_r(gspca_dev, 0x0630);
279 rcv_val(gspca_dev, 0x000020); /* << (value ff ff ff ff) */
280 reg_r(gspca_dev, 0x0650);
281 snd_val(gspca_dev, 0x000020, 0xffffffff);
282 reg_w(gspca_dev, 0x0620, 0);
283 reg_w(gspca_dev, 0x0630, 0);
284 reg_w(gspca_dev, 0x0640, 0);
285 reg_w(gspca_dev, 0x0650, 0);
286 reg_w(gspca_dev, 0x0660, 0);
287 set_par(gspca_dev, 0x09800000); /* Red ? */
288 set_par(gspca_dev, 0x0a800000); /* Green ? */
289 set_par(gspca_dev, 0x0b800000); /* Blue ? */
290 set_par(gspca_dev, 0x0d030000); /* Gamma ? */
292 /* start the video flow */
293 set_par(gspca_dev, 0x01000000);
294 set_par(gspca_dev, 0x01000000);
295 if (gspca_dev->usb_err >= 0)
296 PDEBUG(D_STREAM, "camera started alt: 0x%02x",
299 return gspca_dev->usb_err;
302 static void sd_stopN(struct gspca_dev *gspca_dev)
304 struct usb_device *dev = gspca_dev->dev;
306 set_par(gspca_dev, 0x02000000);
307 set_par(gspca_dev, 0x02000000);
308 usb_set_interface(dev, gspca_dev->iface, 1);
309 reg_r(gspca_dev, 0x0630);
310 rcv_val(gspca_dev, 0x000020); /* << (value ff ff ff ff) */
311 reg_r(gspca_dev, 0x0650);
312 snd_val(gspca_dev, 0x000020, 0xffffffff);
313 reg_w(gspca_dev, 0x0620, 0);
314 reg_w(gspca_dev, 0x0630, 0);
315 reg_w(gspca_dev, 0x0640, 0);
316 reg_w(gspca_dev, 0x0650, 0);
317 reg_w(gspca_dev, 0x0660, 0);
318 PDEBUG(D_STREAM, "camera stopped");
321 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
322 u8 *data, /* isoc packet */
323 int len) /* iso packet length */
325 struct sd *sd = (struct sd *) gspca_dev;
326 static unsigned char ffd9[] = {0xff, 0xd9};
328 /* a frame starts with:
330 * - 0x08 0x00 - length (little endian ?!)
331 * - 4 bytes = size of whole frame (BE - including header)
334 * - .. JPEG image with escape sequences (ff 00)
335 * (without ending - ff d9)
337 if (data[0] == 0xff && data[1] == 0xfe) {
338 gspca_frame_add(gspca_dev, LAST_PACKET,
341 /* put the JPEG 411 header */
342 gspca_frame_add(gspca_dev, FIRST_PACKET,
343 sd->jpeg_hdr, JPEG_HDR_SZ);
345 /* beginning of the frame */
350 gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
353 static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
355 struct gspca_dev *gspca_dev =
356 container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
358 gspca_dev->usb_err = 0;
360 if (!gspca_dev->streaming)
364 case V4L2_CID_BRIGHTNESS:
365 setbrightness(gspca_dev, ctrl->val);
367 case V4L2_CID_CONTRAST:
368 setcontrast(gspca_dev, ctrl->val);
370 case V4L2_CID_SATURATION:
371 setcolors(gspca_dev, ctrl->val);
373 case V4L2_CID_POWER_LINE_FREQUENCY:
374 setlightfreq(gspca_dev, ctrl->val);
377 return gspca_dev->usb_err;
380 static const struct v4l2_ctrl_ops sd_ctrl_ops = {
384 static int sd_init_controls(struct gspca_dev *gspca_dev)
386 struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
388 gspca_dev->vdev.ctrl_handler = hdl;
389 v4l2_ctrl_handler_init(hdl, 4);
390 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
391 V4L2_CID_BRIGHTNESS, 0, 255, 1, 127);
392 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
393 V4L2_CID_CONTRAST, 0, 255, 1, 127);
394 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
395 V4L2_CID_SATURATION, 0, 255, 1, 127);
396 v4l2_ctrl_new_std_menu(hdl, &sd_ctrl_ops,
397 V4L2_CID_POWER_LINE_FREQUENCY,
398 V4L2_CID_POWER_LINE_FREQUENCY_60HZ, 1,
399 V4L2_CID_POWER_LINE_FREQUENCY_50HZ);
402 pr_err("Could not initialize controls\n");
408 /* sub-driver description */
409 static const struct sd_desc sd_desc = {
413 .init_controls = sd_init_controls,
416 .pkt_scan = sd_pkt_scan,
419 /* -- module initialisation -- */
420 static const struct usb_device_id device_table[] = {
421 {USB_DEVICE(0x05e1, 0x0893)},
424 MODULE_DEVICE_TABLE(usb, device_table);
426 /* -- device connect -- */
427 static int sd_probe(struct usb_interface *intf,
428 const struct usb_device_id *id)
430 return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
434 static struct usb_driver sd_driver = {
436 .id_table = device_table,
438 .disconnect = gspca_disconnect,
440 .suspend = gspca_suspend,
441 .resume = gspca_resume,
442 .reset_resume = gspca_resume,
446 module_usb_driver(sd_driver);