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authorJean-Francois Moine <moinejf@free.fr>2008-04-12 08:58:09 -0400
committerMauro Carvalho Chehab <mchehab@infradead.org>2008-07-20 06:14:28 -0400
commit63eb9546dcb5e9dc39ab88a603dede8fdd18e717 (patch)
treec61a8365a0428a58f643df35b29220f1c5e63f46 /drivers/media/video/gspca/stk014.c
parent8b53b39d6228cda41b7ddfc9d094a072afca6655 (diff)
V4L/DVB (8152): Initial release of gspca with only one driver.
Signed-off-by: Jean-Francois Moine <moinejf@free.fr> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/video/gspca/stk014.c')
-rw-r--r--drivers/media/video/gspca/stk014.c562
1 files changed, 562 insertions, 0 deletions
diff --git a/drivers/media/video/gspca/stk014.c b/drivers/media/video/gspca/stk014.c
new file mode 100644
index 000000000000..8fd4ff01362e
--- /dev/null
+++ b/drivers/media/video/gspca/stk014.c
@@ -0,0 +1,562 @@
1/*
2 * Syntek DV4000 (STK014) subdriver
3 *
4 * Copyright (C) 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
22#define MODULE_NAME "stk014"
23
24#include "gspca.h"
25#include "jpeg.h"
26
27#define DRIVER_VERSION_NUMBER KERNEL_VERSION(0, 0, 22)
28static const char version[] = "0.0.22";
29
30MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
31MODULE_DESCRIPTION("Syntek DV4000 (STK014) USB Camera Driver");
32MODULE_LICENSE("GPL");
33
34/* specific webcam descriptor */
35struct sd {
36 struct gspca_dev gspca_dev; /* !! must be the first item */
37
38 unsigned char brightness;
39 unsigned char contrast;
40 unsigned char colors;
41};
42
43/* global parameters */
44static int lightfreq = 50;
45static int sd_quant = 7; /* <= 4 KO - 7: good (enough!) */
46
47/* V4L2 controls supported by the driver */
48static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
49static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
50static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val);
51static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val);
52static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val);
53static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val);
54
55static struct ctrl sd_ctrls[] = {
56#define SD_BRIGHTNESS 0
57 {
58 {
59 .id = V4L2_CID_BRIGHTNESS,
60 .type = V4L2_CTRL_TYPE_INTEGER,
61 .name = "Brightness",
62 .minimum = 0,
63 .maximum = 255,
64 .step = 1,
65 .default_value = 127,
66 },
67 .set = sd_setbrightness,
68 .get = sd_getbrightness,
69 },
70#define SD_CONTRAST 1
71 {
72 {
73 .id = V4L2_CID_CONTRAST,
74 .type = V4L2_CTRL_TYPE_INTEGER,
75 .name = "Contrast",
76 .minimum = 0,
77 .maximum = 255,
78 .step = 1,
79 .default_value = 127,
80 },
81 .set = sd_setcontrast,
82 .get = sd_getcontrast,
83 },
84#define SD_COLOR 2
85 {
86 {
87 .id = V4L2_CID_SATURATION,
88 .type = V4L2_CTRL_TYPE_INTEGER,
89 .name = "Saturation",
90 .minimum = 0,
91 .maximum = 255,
92 .step = 1,
93 .default_value = 127,
94 },
95 .set = sd_setcolors,
96 .get = sd_getcolors,
97 },
98};
99
100static struct cam_mode vga_mode[] = {
101 {V4L2_PIX_FMT_JPEG, 320, 240},
102 {V4L2_PIX_FMT_JPEG, 640, 480},
103};
104
105/* -- read a register -- */
106static int reg_read(struct gspca_dev *gspca_dev,
107 __u16 index, __u8 *buf)
108{
109 int ret;
110 struct usb_device *dev = gspca_dev->dev;
111
112 ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
113 0x00,
114 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
115 0x00,
116 index,
117 buf, 1,
118 500);
119 if (ret < 0)
120 PDEBUG(D_ERR, "reg_read err %d", ret);
121 return ret;
122}
123
124/* -- write a register -- */
125static int reg_write(struct gspca_dev *gspca_dev,
126 __u16 index, __u16 value)
127{
128 struct usb_device *dev = gspca_dev->dev;
129 int ret;
130
131 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
132 0x01,
133 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
134 value,
135 index,
136 NULL,
137 0,
138 500);
139 if (ret < 0)
140 PDEBUG(D_ERR, "reg_write err %d", ret);
141 return ret;
142}
143
144/* -- get a value -- */
145static int rcv_val(struct gspca_dev *gspca_dev,
146 int ads,
147 int len)
148{
149 struct usb_device *dev = gspca_dev->dev;
150 int alen, ret;
151 unsigned char bulk_buf[4];
152
153 reg_write(gspca_dev, 0x634, (ads >> 16) & 0xff);
154 reg_write(gspca_dev, 0x635, (ads >> 8) & 0xff);
155 reg_write(gspca_dev, 0x636, ads & 0xff);
156 reg_write(gspca_dev, 0x637, 0);
157 reg_write(gspca_dev, 0x638, len & 0xff);
158 reg_write(gspca_dev, 0x639, len >> 8);
159 reg_write(gspca_dev, 0x63a, 0);
160 reg_write(gspca_dev, 0x63b, 0);
161 reg_write(gspca_dev, 0x630, 5);
162 if (len > sizeof bulk_buf)
163 return -1;
164 ret = usb_bulk_msg(dev,
165 usb_rcvbulkpipe(dev, 5),
166 bulk_buf,
167 len,
168 &alen,
169 500); /* timeout in milliseconds */
170 return ret;
171}
172
173/* -- send a value -- */
174static int snd_val(struct gspca_dev *gspca_dev,
175 int ads,
176 unsigned int val)
177{
178 struct usb_device *dev = gspca_dev->dev;
179 int alen, ret;
180 __u8 value, seq;
181 unsigned char bulk_buf[4];
182
183 if (ads == 0x003f08) {
184 ret = reg_read(gspca_dev, 0x0704, &value);
185 if (ret < 0)
186 goto ko;
187 ret = reg_read(gspca_dev, 0x0705, &seq);
188 if (ret < 0)
189 goto ko;
190 ret = reg_read(gspca_dev, 0x0650, &value);
191 if (ret < 0)
192 goto ko;
193 reg_write(gspca_dev, 0x654, seq);
194 } else
195 reg_write(gspca_dev, 0x654, (ads >> 16) & 0xff);
196 reg_write(gspca_dev, 0x655, (ads >> 8) & 0xff);
197 reg_write(gspca_dev, 0x656, ads & 0xff);
198 reg_write(gspca_dev, 0x657, 0);
199 reg_write(gspca_dev, 0x658, 0x04); /* size */
200 reg_write(gspca_dev, 0x659, 0);
201 reg_write(gspca_dev, 0x65a, 0);
202 reg_write(gspca_dev, 0x65b, 0);
203 reg_write(gspca_dev, 0x650, 5);
204 bulk_buf[0] = (val >> 24) & 0xff;
205 bulk_buf[1] = (val >> 16) & 0xff;
206 bulk_buf[2] = (val >> 8) & 0xff;
207 bulk_buf[3] = val & 0xff;
208 ret = usb_bulk_msg(dev,
209 usb_sndbulkpipe(dev, 6),
210 bulk_buf,
211 4,
212 &alen,
213 500); /* timeout in milliseconds */
214 if (ret < 0)
215 goto ko;
216 if (ads == 0x003f08) {
217 seq += 4;
218 seq &= 0x3f;
219 reg_write(gspca_dev, 0x705, seq);
220 }
221 return ret;
222ko:
223 PDEBUG(D_ERR, "snd_val err %d", ret);
224 return ret;
225}
226
227/* set a camera parameter */
228static int set_par(struct gspca_dev *gspca_dev,
229 int parval)
230{
231 return snd_val(gspca_dev, 0x003f08, parval);
232}
233
234static void setbrightness(struct gspca_dev *gspca_dev)
235{
236 struct sd *sd = (struct sd *) gspca_dev;
237 int parval;
238
239 PDEBUG(D_CONF, "brightness: %d", sd->brightness);
240 parval = 0x06000000 /* whiteness */
241 + (sd->brightness << 16);
242 set_par(gspca_dev, parval);
243}
244
245static void setcontrast(struct gspca_dev *gspca_dev)
246{
247 struct sd *sd = (struct sd *) gspca_dev;
248 int parval;
249
250 PDEBUG(D_CONF, "contrast: %d", sd->contrast);
251 parval = 0x07000000 /* contrast */
252 + (sd->contrast << 16);
253 set_par(gspca_dev, parval);
254}
255
256static void setcolors(struct gspca_dev *gspca_dev)
257{
258 struct sd *sd = (struct sd *) gspca_dev;
259 int parval;
260
261 PDEBUG(D_CONF, "saturation: %d",
262 sd->colors);
263 parval = 0x08000000 /* saturation */
264 + (sd->colors << 16);
265 set_par(gspca_dev, parval);
266}
267
268/* this function is called at probe time */
269static int sd_config(struct gspca_dev *gspca_dev,
270 const struct usb_device_id *id)
271{
272 struct sd *sd = (struct sd *) gspca_dev;
273 struct cam *cam = &gspca_dev->cam;
274
275 cam->dev_name = (char *) id->driver_info;
276 cam->epaddr = 0x02;
277 gspca_dev->cam.cam_mode = vga_mode;
278 gspca_dev->cam.nmodes = sizeof vga_mode / sizeof vga_mode[0];
279 sd->brightness = sd_ctrls[SD_BRIGHTNESS].qctrl.default_value;
280 sd->contrast = sd_ctrls[SD_CONTRAST].qctrl.default_value;
281 sd->colors = sd_ctrls[SD_COLOR].qctrl.default_value;
282 return 0;
283}
284
285/* this function is called at open time */
286static int sd_open(struct gspca_dev *gspca_dev)
287{
288 __u8 value;
289 int ret;
290
291 /* check if the device responds */
292 usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
293 ret = reg_read(gspca_dev, 0x0740, &value);
294 if (ret < 0)
295 return ret;
296 if (value != 0xff) {
297 PDEBUG(D_ERR|D_STREAM, "init reg: 0x%02x", value);
298 return -1;
299 }
300 return 0;
301}
302
303/* -- start the camera -- */
304static void sd_start(struct gspca_dev *gspca_dev)
305{
306 __u8 dum;
307 int ret, value;
308
309 /* work on alternate 1 */
310 usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
311
312 set_par(gspca_dev, 0x10000000);
313 set_par(gspca_dev, 0x00000000);
314 set_par(gspca_dev, 0x8002e001);
315 set_par(gspca_dev, 0x14000000);
316 if (gspca_dev->width > 320)
317 value = 0x8002e001; /* 640x480 */
318 else
319 value = 0x4001f000; /* 320x240 */
320 set_par(gspca_dev, value);
321 ret = usb_set_interface(gspca_dev->dev,
322 gspca_dev->iface,
323 gspca_dev->alt);
324 if (ret < 0)
325 goto out;
326 ret = reg_read(gspca_dev, 0x0630, &dum);
327 if (ret < 0)
328 goto out;
329 rcv_val(gspca_dev, 0x000020, 4); /* << (value ff ff ff ff) */
330 ret = reg_read(gspca_dev, 0x0650, &dum);
331 if (ret < 0)
332 goto out;
333 snd_val(gspca_dev, 0x000020, 0xffffffff);
334 reg_write(gspca_dev, 0x0620, 0);
335 reg_write(gspca_dev, 0x0630, 0);
336 reg_write(gspca_dev, 0x0640, 0);
337 reg_write(gspca_dev, 0x0650, 0);
338 reg_write(gspca_dev, 0x0660, 0);
339 setbrightness(gspca_dev); /* whiteness */
340 setcontrast(gspca_dev); /* contrast */
341 setcolors(gspca_dev); /* saturation */
342 set_par(gspca_dev, 0x09800000); /* Red ? */
343 set_par(gspca_dev, 0x0a800000); /* Green ? */
344 set_par(gspca_dev, 0x0b800000); /* Blue ? */
345 set_par(gspca_dev, 0x0d030000); /* Gamma ? */
346 set_par(gspca_dev, lightfreq == 60
347 ? 0x33780000 /* 60 Hz */
348 : 0x33640000); /* 50 Hz */
349
350 /* start the video flow */
351 set_par(gspca_dev, 0x01000000);
352 set_par(gspca_dev, 0x01000000);
353 PDEBUG(D_STREAM, "camera started alt: 0x%02x", gspca_dev->alt);
354 return;
355out:
356 PDEBUG(D_ERR|D_STREAM, "camera start err %d", ret);
357}
358
359static void sd_stopN(struct gspca_dev *gspca_dev)
360{
361 struct usb_device *dev = gspca_dev->dev;
362 __u8 value;
363
364 set_par(gspca_dev, 0x02000000);
365 set_par(gspca_dev, 0x02000000);
366 usb_set_interface(dev, gspca_dev->iface, 1);
367 reg_read(gspca_dev, 0x0630, &value);
368 rcv_val(gspca_dev, 0x000020, 4); /* << (value ff ff ff ff) */
369 reg_read(gspca_dev, 0x0650, &value);
370 snd_val(gspca_dev, 0x000020, 0xffffffff);
371 reg_write(gspca_dev, 0x0620, 0);
372 reg_write(gspca_dev, 0x0630, 0);
373 reg_write(gspca_dev, 0x0640, 0);
374 reg_write(gspca_dev, 0x0650, 0);
375 reg_write(gspca_dev, 0x0660, 0);
376 PDEBUG(D_STREAM, "camera stopped");
377}
378
379static void sd_stop0(struct gspca_dev *gspca_dev)
380{
381}
382
383static void sd_close(struct gspca_dev *gspca_dev)
384{
385}
386
387static void sd_pkt_scan(struct gspca_dev *gspca_dev,
388 struct gspca_frame *frame, /* target */
389 unsigned char *data, /* isoc packet */
390 int len) /* iso packet length */
391{
392 int l;
393
394 /* a frame starts with:
395 * - 0xff 0xfe
396 * - 0x08 0x00 // length (little endian ?!)
397 * - 4 bytes = size of whole frame (big endian - including header)
398 * - 0x00 0x0c
399 * - 0xff 0xd8
400 * - .. JPEG image with escape sequences (ff 00)
401 */
402 if (data[0] == 0xff && data[1] == 0xfe) {
403 if (gspca_dev->last_packet_type == INTER_PACKET) {
404 PDEBUG(D_ERR|D_FRAM, "sof actual l: %d init l: %d",
405 frame->data_end - frame->data,
406 frame->v4l2_buf.bytesused);
407 }
408
409 /* put the JPEG headaer */
410 jpeg_put_header(gspca_dev, frame, sd_quant, 0x22);
411
412 /* beginning of the frame */
413#define STKHDRSZ 12
414 l = (data[4] << 24) /* frame size */
415 + (data[5] << 16)
416 + (data[6] << 8)
417 + data[7]
418 - STKHDRSZ
419 + (frame->data_end - frame->data)
420 + 2; /* EOF (ff d9) */
421 gspca_frame_add(gspca_dev, INTER_PACKET, frame,
422 data + STKHDRSZ, len - STKHDRSZ);
423#undef STKHDRSZ
424 frame->v4l2_buf.bytesused = l;
425 return;
426 }
427 if (gspca_dev->last_packet_type != INTER_PACKET) {
428 if (gspca_dev->last_packet_type == LAST_PACKET) {
429 PDEBUG(D_ERR|D_PACK, "mof actual l: %d init l: %d",
430 frame->data_end - frame->data,
431 frame->v4l2_buf.bytesused);
432 }
433 return;
434 }
435
436 /* intermediate packet */
437 l = frame->data_end - frame->data;
438 if (len < frame->v4l2_buf.bytesused - 2 - l) {
439 gspca_frame_add(gspca_dev, INTER_PACKET, frame,
440 data, len);
441 return;
442 }
443
444 /* last packet */
445 if (len > frame->v4l2_buf.bytesused - 2 - l)
446 len = frame->v4l2_buf.bytesused - 2 - l;
447 gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
448 gspca_frame_add(gspca_dev, LAST_PACKET, frame, "\xff\xd9", 2);
449}
450
451static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
452{
453 struct sd *sd = (struct sd *) gspca_dev;
454
455 sd->brightness = val;
456 if (gspca_dev->streaming)
457 setbrightness(gspca_dev);
458 return 0;
459}
460
461static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
462{
463 struct sd *sd = (struct sd *) gspca_dev;
464
465 *val = sd->brightness;
466 return 0;
467}
468
469static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
470{
471 struct sd *sd = (struct sd *) gspca_dev;
472
473 sd->contrast = val;
474 if (gspca_dev->streaming)
475 setcontrast(gspca_dev);
476 return 0;
477}
478
479static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
480{
481 struct sd *sd = (struct sd *) gspca_dev;
482
483 *val = sd->contrast;
484 return 0;
485}
486
487static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val)
488{
489 struct sd *sd = (struct sd *) gspca_dev;
490
491 sd->colors = val;
492 if (gspca_dev->streaming)
493 setcolors(gspca_dev);
494 return 0;
495}
496
497static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val)
498{
499 struct sd *sd = (struct sd *) gspca_dev;
500
501 *val = sd->colors;
502 return 0;
503}
504
505/* sub-driver description */
506static struct sd_desc sd_desc = {
507 .name = MODULE_NAME,
508 .ctrls = sd_ctrls,
509 .nctrls = sizeof sd_ctrls / sizeof sd_ctrls[0],
510 .config = sd_config,
511 .open = sd_open,
512 .start = sd_start,
513 .stopN = sd_stopN,
514 .stop0 = sd_stop0,
515 .close = sd_close,
516 .pkt_scan = sd_pkt_scan,
517};
518
519/* -- module initialisation -- */
520#define DVNM(name) .driver_info = (kernel_ulong_t) name
521static __devinitdata struct usb_device_id device_table[] = {
522 {USB_DEVICE(0x05e1, 0x0893), DVNM("Syntek DV4000")},
523 {}
524};
525MODULE_DEVICE_TABLE(usb, device_table);
526
527/* -- device connect -- */
528static int sd_probe(struct usb_interface *intf,
529 const struct usb_device_id *id)
530{
531 PDEBUG(D_PROBE, "camera probe");
532 return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd));
533}
534
535static struct usb_driver sd_driver = {
536 .name = MODULE_NAME,
537 .id_table = device_table,
538 .probe = sd_probe,
539 .disconnect = gspca_disconnect,
540};
541
542/* -- module insert / remove -- */
543static int __init sd_mod_init(void)
544{
545 if (usb_register(&sd_driver) < 0)
546 return -1;
547 info("v%s registered", version);
548 return 0;
549}
550static void __exit sd_mod_exit(void)
551{
552 usb_deregister(&sd_driver);
553 info("deregistered");
554}
555
556module_init(sd_mod_init);
557module_exit(sd_mod_exit);
558
559module_param(lightfreq, int, 0644);
560MODULE_PARM_DESC(lightfreq, "Light frequency 50 or 60 Hz");
561module_param_named(quant, sd_quant, int, 0644);
562MODULE_PARM_DESC(quant, "Quantization index (0..8)");
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-11 18:20:35 -0500