1 /*
2 * Syntek DV4000 (STK014) subdriver
3 *
4 * Copyright (C) 2008 Jean-Francois Moine (http://moinejf.free.fr)
5 *
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
9 * any later version.
10 *
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.
15 *
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
19 */
20
21 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
22
23 #define MODULE_NAME "stk014"
24
25 #include "gspca.h"
26 #include "jpeg.h"
27
28 MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
29 MODULE_DESCRIPTION("Syntek DV4000 (STK014) USB Camera Driver");
30 MODULE_LICENSE("GPL");
31
32 #define QUALITY 50
33
34 /* specific webcam descriptor */
35 struct sd {
36 struct gspca_dev gspca_dev; /* !! must be the first item */
37 u8 jpeg_hdr[JPEG_HDR_SZ];
38 };
39
40 static const struct v4l2_pix_format vga_mode[] = {
41 {320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
42 .bytesperline = 320,
43 .sizeimage = 320 * 240 * 3 / 8 + 590,
44 .colorspace = V4L2_COLORSPACE_JPEG,
45 .priv = 1},
46 {640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
47 .bytesperline = 640,
48 .sizeimage = 640 * 480 * 3 / 8 + 590,
49 .colorspace = V4L2_COLORSPACE_JPEG,
50 .priv = 0},
51 };
52
53 /* -- read a register -- */
reg_r(struct gspca_dev * gspca_dev,__u16 index)54 static u8 reg_r(struct gspca_dev *gspca_dev,
55 __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 if (ret < 0) {
70 pr_err("reg_r err %d\n", ret);
71 gspca_dev->usb_err = ret;
72 return 0;
73 }
74 return gspca_dev->usb_buf[0];
75 }
76
77 /* -- write a register -- */
reg_w(struct gspca_dev * gspca_dev,__u16 index,__u16 value)78 static void reg_w(struct gspca_dev *gspca_dev,
79 __u16 index, __u16 value)
80 {
81 struct usb_device *dev = gspca_dev->dev;
82 int ret;
83
84 if (gspca_dev->usb_err < 0)
85 return;
86 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
87 0x01,
88 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
89 value,
90 index,
91 NULL,
92 0,
93 500);
94 if (ret < 0) {
95 pr_err("reg_w err %d\n", ret);
96 gspca_dev->usb_err = ret;
97 }
98 }
99
100 /* -- get a bulk value (4 bytes) -- */
rcv_val(struct gspca_dev * gspca_dev,int ads)101 static void rcv_val(struct gspca_dev *gspca_dev,
102 int ads)
103 {
104 struct usb_device *dev = gspca_dev->dev;
105 int alen, ret;
106
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)
117 return;
118 ret = usb_bulk_msg(dev,
119 usb_rcvbulkpipe(dev, 0x05),
120 gspca_dev->usb_buf,
121 4, /* length */
122 &alen,
123 500); /* timeout in milliseconds */
124 if (ret < 0) {
125 pr_err("rcv_val err %d\n", ret);
126 gspca_dev->usb_err = ret;
127 }
128 }
129
130 /* -- send a bulk value -- */
snd_val(struct gspca_dev * gspca_dev,int ads,unsigned int val)131 static void snd_val(struct gspca_dev *gspca_dev,
132 int ads,
133 unsigned int val)
134 {
135 struct usb_device *dev = gspca_dev->dev;
136 int alen, ret;
137 __u8 seq = 0;
138
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);
144 } else {
145 reg_w(gspca_dev, 0x654, (ads >> 16) & 0xff);
146 }
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)
156 return;
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),
163 gspca_dev->usb_buf,
164 4,
165 &alen,
166 500); /* timeout in milliseconds */
167 if (ret < 0) {
168 pr_err("snd_val err %d\n", ret);
169 gspca_dev->usb_err = ret;
170 } else {
171 if (ads == 0x003f08) {
172 seq += 4;
173 seq &= 0x3f;
174 reg_w(gspca_dev, 0x705, seq);
175 }
176 }
177 }
178
179 /* set a camera parameter */
set_par(struct gspca_dev * gspca_dev,int parval)180 static void set_par(struct gspca_dev *gspca_dev,
181 int parval)
182 {
183 snd_val(gspca_dev, 0x003f08, parval);
184 }
185
setbrightness(struct gspca_dev * gspca_dev,s32 val)186 static void setbrightness(struct gspca_dev *gspca_dev, s32 val)
187 {
188 int parval;
189
190 parval = 0x06000000 /* whiteness */
191 + (val << 16);
192 set_par(gspca_dev, parval);
193 }
194
setcontrast(struct gspca_dev * gspca_dev,s32 val)195 static void setcontrast(struct gspca_dev *gspca_dev, s32 val)
196 {
197 int parval;
198
199 parval = 0x07000000 /* contrast */
200 + (val << 16);
201 set_par(gspca_dev, parval);
202 }
203
setcolors(struct gspca_dev * gspca_dev,s32 val)204 static void setcolors(struct gspca_dev *gspca_dev, s32 val)
205 {
206 int parval;
207
208 parval = 0x08000000 /* saturation */
209 + (val << 16);
210 set_par(gspca_dev, parval);
211 }
212
setlightfreq(struct gspca_dev * gspca_dev,s32 val)213 static void setlightfreq(struct gspca_dev *gspca_dev, s32 val)
214 {
215 set_par(gspca_dev, val == 1
216 ? 0x33640000 /* 50 Hz */
217 : 0x33780000); /* 60 Hz */
218 }
219
220 /* this function is called at probe time */
sd_config(struct gspca_dev * gspca_dev,const struct usb_device_id * id)221 static int sd_config(struct gspca_dev *gspca_dev,
222 const struct usb_device_id *id)
223 {
224 gspca_dev->cam.cam_mode = vga_mode;
225 gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode);
226 return 0;
227 }
228
229 /* this function is called at probe and resume time */
sd_init(struct gspca_dev * gspca_dev)230 static int sd_init(struct gspca_dev *gspca_dev)
231 {
232 u8 ret;
233
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) {
238 if (ret != 0xff) {
239 pr_err("init reg: 0x%02x\n", ret);
240 gspca_dev->usb_err = -EIO;
241 }
242 }
243 return gspca_dev->usb_err;
244 }
245
246 /* -- start the camera -- */
sd_start(struct gspca_dev * gspca_dev)247 static int sd_start(struct gspca_dev *gspca_dev)
248 {
249 struct sd *sd = (struct sd *) gspca_dev;
250 int ret, value;
251
252 /* create the JPEG header */
253 jpeg_define(sd->jpeg_hdr, gspca_dev->pixfmt.height,
254 gspca_dev->pixfmt.width,
255 0x22); /* JPEG 411 */
256 jpeg_set_qual(sd->jpeg_hdr, QUALITY);
257
258 /* work on alternate 1 */
259 usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
260
261 set_par(gspca_dev, 0x10000000);
262 set_par(gspca_dev, 0x00000000);
263 set_par(gspca_dev, 0x8002e001);
264 set_par(gspca_dev, 0x14000000);
265 if (gspca_dev->pixfmt.width > 320)
266 value = 0x8002e001; /* 640x480 */
267 else
268 value = 0x4001f000; /* 320x240 */
269 set_par(gspca_dev, value);
270 ret = usb_set_interface(gspca_dev->dev,
271 gspca_dev->iface,
272 gspca_dev->alt);
273 if (ret < 0) {
274 pr_err("set intf %d %d failed\n",
275 gspca_dev->iface, gspca_dev->alt);
276 gspca_dev->usb_err = ret;
277 goto out;
278 }
279 reg_r(gspca_dev, 0x0630);
280 rcv_val(gspca_dev, 0x000020); /* << (value ff ff ff ff) */
281 reg_r(gspca_dev, 0x0650);
282 snd_val(gspca_dev, 0x000020, 0xffffffff);
283 reg_w(gspca_dev, 0x0620, 0);
284 reg_w(gspca_dev, 0x0630, 0);
285 reg_w(gspca_dev, 0x0640, 0);
286 reg_w(gspca_dev, 0x0650, 0);
287 reg_w(gspca_dev, 0x0660, 0);
288 set_par(gspca_dev, 0x09800000); /* Red ? */
289 set_par(gspca_dev, 0x0a800000); /* Green ? */
290 set_par(gspca_dev, 0x0b800000); /* Blue ? */
291 set_par(gspca_dev, 0x0d030000); /* Gamma ? */
292
293 /* start the video flow */
294 set_par(gspca_dev, 0x01000000);
295 set_par(gspca_dev, 0x01000000);
296 if (gspca_dev->usb_err >= 0)
297 PDEBUG(D_STREAM, "camera started alt: 0x%02x",
298 gspca_dev->alt);
299 out:
300 return gspca_dev->usb_err;
301 }
302
sd_stopN(struct gspca_dev * gspca_dev)303 static void sd_stopN(struct gspca_dev *gspca_dev)
304 {
305 struct usb_device *dev = gspca_dev->dev;
306
307 set_par(gspca_dev, 0x02000000);
308 set_par(gspca_dev, 0x02000000);
309 usb_set_interface(dev, gspca_dev->iface, 1);
310 reg_r(gspca_dev, 0x0630);
311 rcv_val(gspca_dev, 0x000020); /* << (value ff ff ff ff) */
312 reg_r(gspca_dev, 0x0650);
313 snd_val(gspca_dev, 0x000020, 0xffffffff);
314 reg_w(gspca_dev, 0x0620, 0);
315 reg_w(gspca_dev, 0x0630, 0);
316 reg_w(gspca_dev, 0x0640, 0);
317 reg_w(gspca_dev, 0x0650, 0);
318 reg_w(gspca_dev, 0x0660, 0);
319 PDEBUG(D_STREAM, "camera stopped");
320 }
321
sd_pkt_scan(struct gspca_dev * gspca_dev,u8 * data,int len)322 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
323 u8 *data, /* isoc packet */
324 int len) /* iso packet length */
325 {
326 struct sd *sd = (struct sd *) gspca_dev;
327 static unsigned char ffd9[] = {0xff, 0xd9};
328
329 /* a frame starts with:
330 * - 0xff 0xfe
331 * - 0x08 0x00 - length (little endian ?!)
332 * - 4 bytes = size of whole frame (BE - including header)
333 * - 0x00 0x0c
334 * - 0xff 0xd8
335 * - .. JPEG image with escape sequences (ff 00)
336 * (without ending - ff d9)
337 */
338 if (data[0] == 0xff && data[1] == 0xfe) {
339 gspca_frame_add(gspca_dev, LAST_PACKET,
340 ffd9, 2);
341
342 /* put the JPEG 411 header */
343 gspca_frame_add(gspca_dev, FIRST_PACKET,
344 sd->jpeg_hdr, JPEG_HDR_SZ);
345
346 /* beginning of the frame */
347 #define STKHDRSZ 12
348 data += STKHDRSZ;
349 len -= STKHDRSZ;
350 }
351 gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
352 }
353
sd_s_ctrl(struct v4l2_ctrl * ctrl)354 static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
355 {
356 struct gspca_dev *gspca_dev =
357 container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
358
359 gspca_dev->usb_err = 0;
360
361 if (!gspca_dev->streaming)
362 return 0;
363
364 switch (ctrl->id) {
365 case V4L2_CID_BRIGHTNESS:
366 setbrightness(gspca_dev, ctrl->val);
367 break;
368 case V4L2_CID_CONTRAST:
369 setcontrast(gspca_dev, ctrl->val);
370 break;
371 case V4L2_CID_SATURATION:
372 setcolors(gspca_dev, ctrl->val);
373 break;
374 case V4L2_CID_POWER_LINE_FREQUENCY:
375 setlightfreq(gspca_dev, ctrl->val);
376 break;
377 }
378 return gspca_dev->usb_err;
379 }
380
381 static const struct v4l2_ctrl_ops sd_ctrl_ops = {
382 .s_ctrl = sd_s_ctrl,
383 };
384
sd_init_controls(struct gspca_dev * gspca_dev)385 static int sd_init_controls(struct gspca_dev *gspca_dev)
386 {
387 struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
388
389 gspca_dev->vdev.ctrl_handler = hdl;
390 v4l2_ctrl_handler_init(hdl, 4);
391 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
392 V4L2_CID_BRIGHTNESS, 0, 255, 1, 127);
393 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
394 V4L2_CID_CONTRAST, 0, 255, 1, 127);
395 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
396 V4L2_CID_SATURATION, 0, 255, 1, 127);
397 v4l2_ctrl_new_std_menu(hdl, &sd_ctrl_ops,
398 V4L2_CID_POWER_LINE_FREQUENCY,
399 V4L2_CID_POWER_LINE_FREQUENCY_60HZ, 1,
400 V4L2_CID_POWER_LINE_FREQUENCY_50HZ);
401
402 if (hdl->error) {
403 pr_err("Could not initialize controls\n");
404 return hdl->error;
405 }
406 return 0;
407 }
408
409 /* sub-driver description */
410 static const struct sd_desc sd_desc = {
411 .name = MODULE_NAME,
412 .config = sd_config,
413 .init = sd_init,
414 .init_controls = sd_init_controls,
415 .start = sd_start,
416 .stopN = sd_stopN,
417 .pkt_scan = sd_pkt_scan,
418 };
419
420 /* -- module initialisation -- */
421 static const struct usb_device_id device_table[] = {
422 {USB_DEVICE(0x05e1, 0x0893)},
423 {}
424 };
425 MODULE_DEVICE_TABLE(usb, device_table);
426
427 /* -- device connect -- */
sd_probe(struct usb_interface * intf,const struct usb_device_id * id)428 static int sd_probe(struct usb_interface *intf,
429 const struct usb_device_id *id)
430 {
431 return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
432 THIS_MODULE);
433 }
434
435 static struct usb_driver sd_driver = {
436 .name = MODULE_NAME,
437 .id_table = device_table,
438 .probe = sd_probe,
439 .disconnect = gspca_disconnect,
440 #ifdef CONFIG_PM
441 .suspend = gspca_suspend,
442 .resume = gspca_resume,
443 .reset_resume = gspca_resume,
444 #endif
445 };
446
447 module_usb_driver(sd_driver);
448