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path: root/drivers/media/video/gspca/spca1528.c
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Diffstat (limited to 'drivers/media/video/gspca/spca1528.c')
-rw-r--r--drivers/media/video/gspca/spca1528.c605
1 files changed, 605 insertions, 0 deletions
diff --git a/drivers/media/video/gspca/spca1528.c b/drivers/media/video/gspca/spca1528.c
new file mode 100644
index 000000000000..3f514eb1d99d
--- /dev/null
+++ b/drivers/media/video/gspca/spca1528.c
@@ -0,0 +1,605 @@
1/*
2 * spca1528 subdriver
3 *
4 * Copyright (C) 2010 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 MODULE_NAME "spca1528"
22
23#include "gspca.h"
24#include "jpeg.h"
25
26MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
27MODULE_DESCRIPTION("SPCA1528 USB Camera Driver");
28MODULE_LICENSE("GPL");
29
30/* specific webcam descriptor */
31struct sd {
32 struct gspca_dev gspca_dev; /* !! must be the first item */
33
34 u8 brightness;
35 u8 contrast;
36 u8 hue;
37 u8 color;
38 u8 sharpness;
39
40 u8 pkt_seq;
41
42 u8 jpeg_hdr[JPEG_HDR_SZ];
43};
44
45/* V4L2 controls supported by the driver */
46static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
47static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
48static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val);
49static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val);
50static int sd_sethue(struct gspca_dev *gspca_dev, __s32 val);
51static int sd_gethue(struct gspca_dev *gspca_dev, __s32 *val);
52static int sd_setcolor(struct gspca_dev *gspca_dev, __s32 val);
53static int sd_getcolor(struct gspca_dev *gspca_dev, __s32 *val);
54static int sd_setsharpness(struct gspca_dev *gspca_dev, __s32 val);
55static int sd_getsharpness(struct gspca_dev *gspca_dev, __s32 *val);
56
57static const struct ctrl sd_ctrls[] = {
58 {
59 {
60 .id = V4L2_CID_BRIGHTNESS,
61 .type = V4L2_CTRL_TYPE_INTEGER,
62 .name = "Brightness",
63 .minimum = 0,
64 .maximum = 255,
65 .step = 1,
66#define BRIGHTNESS_DEF 128
67 .default_value = BRIGHTNESS_DEF,
68 },
69 .set = sd_setbrightness,
70 .get = sd_getbrightness,
71 },
72 {
73 {
74 .id = V4L2_CID_CONTRAST,
75 .type = V4L2_CTRL_TYPE_INTEGER,
76 .name = "Contrast",
77 .minimum = 0,
78 .maximum = 8,
79 .step = 1,
80#define CONTRAST_DEF 1
81 .default_value = CONTRAST_DEF,
82 },
83 .set = sd_setcontrast,
84 .get = sd_getcontrast,
85 },
86 {
87 {
88 .id = V4L2_CID_HUE,
89 .type = V4L2_CTRL_TYPE_INTEGER,
90 .name = "Hue",
91 .minimum = 0,
92 .maximum = 255,
93 .step = 1,
94#define HUE_DEF 0
95 .default_value = HUE_DEF,
96 },
97 .set = sd_sethue,
98 .get = sd_gethue,
99 },
100 {
101 {
102 .id = V4L2_CID_SATURATION,
103 .type = V4L2_CTRL_TYPE_INTEGER,
104 .name = "Saturation",
105 .minimum = 0,
106 .maximum = 8,
107 .step = 1,
108#define COLOR_DEF 1
109 .default_value = COLOR_DEF,
110 },
111 .set = sd_setcolor,
112 .get = sd_getcolor,
113 },
114 {
115 {
116 .id = V4L2_CID_SHARPNESS,
117 .type = V4L2_CTRL_TYPE_INTEGER,
118 .name = "Sharpness",
119 .minimum = 0,
120 .maximum = 255,
121 .step = 1,
122#define SHARPNESS_DEF 0
123 .default_value = SHARPNESS_DEF,
124 },
125 .set = sd_setsharpness,
126 .get = sd_getsharpness,
127 },
128};
129
130static const struct v4l2_pix_format vga_mode[] = {
131/* (does not work correctly)
132 {176, 144, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
133 .bytesperline = 176,
134 .sizeimage = 176 * 144 * 5 / 8 + 590,
135 .colorspace = V4L2_COLORSPACE_JPEG,
136 .priv = 3},
137*/
138 {320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
139 .bytesperline = 320,
140 .sizeimage = 320 * 240 * 4 / 8 + 590,
141 .colorspace = V4L2_COLORSPACE_JPEG,
142 .priv = 2},
143 {640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
144 .bytesperline = 640,
145 .sizeimage = 640 * 480 * 3 / 8 + 590,
146 .colorspace = V4L2_COLORSPACE_JPEG,
147 .priv = 1},
148};
149
150/* read <len> bytes to gspca usb_buf */
151static void reg_r(struct gspca_dev *gspca_dev,
152 u8 req,
153 u16 index,
154 int len)
155{
156#if USB_BUF_SZ < 64
157#error "USB buffer too small"
158#endif
159 struct usb_device *dev = gspca_dev->dev;
160 int ret;
161
162 if (gspca_dev->usb_err < 0)
163 return;
164 ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
165 req,
166 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
167 0x0000, /* value */
168 index,
169 gspca_dev->usb_buf, len,
170 500);
171 PDEBUG(D_USBI, "GET %02x 0000 %04x %02x", req, index,
172 gspca_dev->usb_buf[0]);
173 if (ret < 0) {
174 PDEBUG(D_ERR, "reg_r err %d", ret);
175 gspca_dev->usb_err = ret;
176 }
177}
178
179static void reg_w(struct gspca_dev *gspca_dev,
180 u8 req,
181 u16 value,
182 u16 index)
183{
184 struct usb_device *dev = gspca_dev->dev;
185 int ret;
186
187 if (gspca_dev->usb_err < 0)
188 return;
189 PDEBUG(D_USBO, "SET %02x %04x %04x", req, value, index);
190 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
191 req,
192 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
193 value, index,
194 NULL, 0, 500);
195 if (ret < 0) {
196 PDEBUG(D_ERR, "reg_w err %d", ret);
197 gspca_dev->usb_err = ret;
198 }
199}
200
201static void reg_wb(struct gspca_dev *gspca_dev,
202 u8 req,
203 u16 value,
204 u16 index,
205 u8 byte)
206{
207 struct usb_device *dev = gspca_dev->dev;
208 int ret;
209
210 if (gspca_dev->usb_err < 0)
211 return;
212 PDEBUG(D_USBO, "SET %02x %04x %04x %02x", req, value, index, byte);
213 gspca_dev->usb_buf[0] = byte;
214 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
215 req,
216 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
217 value, index,
218 gspca_dev->usb_buf, 1, 500);
219 if (ret < 0) {
220 PDEBUG(D_ERR, "reg_w err %d", ret);
221 gspca_dev->usb_err = ret;
222 }
223}
224
225static void wait_status_0(struct gspca_dev *gspca_dev)
226{
227 int i;
228
229 i = 20;
230 do {
231 reg_r(gspca_dev, 0x21, 0x0000, 1);
232 if (gspca_dev->usb_buf[0] == 0)
233 return;
234 msleep(30);
235 } while (--i > 0);
236 PDEBUG(D_ERR, "wait_status_0 timeout");
237 gspca_dev->usb_err = -ETIME;
238}
239
240static void wait_status_1(struct gspca_dev *gspca_dev)
241{
242 int i;
243
244 i = 10;
245 do {
246 reg_r(gspca_dev, 0x21, 0x0001, 1);
247 msleep(10);
248 if (gspca_dev->usb_buf[0] == 1) {
249 reg_wb(gspca_dev, 0x21, 0x0000, 0x0001, 0x00);
250 reg_r(gspca_dev, 0x21, 0x0001, 1);
251 return;
252 }
253 } while (--i > 0);
254 PDEBUG(D_ERR, "wait_status_1 timeout");
255 gspca_dev->usb_err = -ETIME;
256}
257
258static void setbrightness(struct gspca_dev *gspca_dev)
259{
260 struct sd *sd = (struct sd *) gspca_dev;
261
262 reg_wb(gspca_dev, 0xc0, 0x0000, 0x00c0, sd->brightness);
263}
264
265static void setcontrast(struct gspca_dev *gspca_dev)
266{
267 struct sd *sd = (struct sd *) gspca_dev;
268
269 reg_wb(gspca_dev, 0xc1, 0x0000, 0x00c1, sd->contrast);
270}
271
272static void sethue(struct gspca_dev *gspca_dev)
273{
274 struct sd *sd = (struct sd *) gspca_dev;
275
276 reg_wb(gspca_dev, 0xc2, 0x0000, 0x0000, sd->hue);
277}
278
279static void setcolor(struct gspca_dev *gspca_dev)
280{
281 struct sd *sd = (struct sd *) gspca_dev;
282
283 reg_wb(gspca_dev, 0xc3, 0x0000, 0x00c3, sd->color);
284}
285
286static void setsharpness(struct gspca_dev *gspca_dev)
287{
288 struct sd *sd = (struct sd *) gspca_dev;
289
290 reg_wb(gspca_dev, 0xc4, 0x0000, 0x00c4, sd->sharpness);
291}
292
293/* this function is called at probe time */
294static int sd_config(struct gspca_dev *gspca_dev,
295 const struct usb_device_id *id)
296{
297 struct sd *sd = (struct sd *) gspca_dev;
298
299 gspca_dev->cam.cam_mode = vga_mode;
300 gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode);
301 gspca_dev->cam.npkt = 128; /* number of packets per ISOC message */
302 /*fixme: 256 in ms-win traces*/
303
304 sd->brightness = BRIGHTNESS_DEF;
305 sd->contrast = CONTRAST_DEF;
306 sd->hue = HUE_DEF;
307 sd->color = COLOR_DEF;
308 sd->sharpness = SHARPNESS_DEF;
309
310 gspca_dev->nbalt = 4; /* use alternate setting 3 */
311
312 return 0;
313}
314
315/* this function is called at probe and resume time */
316static int sd_init(struct gspca_dev *gspca_dev)
317{
318 reg_w(gspca_dev, 0x00, 0x0001, 0x2067);
319 reg_w(gspca_dev, 0x00, 0x00d0, 0x206b);
320 reg_w(gspca_dev, 0x00, 0x0000, 0x206c);
321 reg_w(gspca_dev, 0x00, 0x0001, 0x2069);
322 msleep(8);
323 reg_w(gspca_dev, 0x00, 0x00c0, 0x206b);
324 reg_w(gspca_dev, 0x00, 0x0000, 0x206c);
325 reg_w(gspca_dev, 0x00, 0x0001, 0x2069);
326
327 reg_r(gspca_dev, 0x20, 0x0000, 1);
328 reg_r(gspca_dev, 0x20, 0x0000, 5);
329 reg_r(gspca_dev, 0x23, 0x0000, 64);
330 PDEBUG(D_PROBE, "%s%s", &gspca_dev->usb_buf[0x1c],
331 &gspca_dev->usb_buf[0x30]);
332 reg_r(gspca_dev, 0x23, 0x0001, 64);
333 return gspca_dev->usb_err;
334}
335
336/* function called at start time before URB creation */
337static int sd_isoc_init(struct gspca_dev *gspca_dev)
338{
339 u8 mode;
340
341 reg_r(gspca_dev, 0x00, 0x2520, 1);
342 wait_status_0(gspca_dev);
343 reg_w(gspca_dev, 0xc5, 0x0003, 0x0000);
344 wait_status_1(gspca_dev);
345
346 wait_status_0(gspca_dev);
347 mode = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;
348 reg_wb(gspca_dev, 0x25, 0x0000, 0x0004, mode);
349 reg_r(gspca_dev, 0x25, 0x0004, 1);
350 reg_wb(gspca_dev, 0x27, 0x0000, 0x0000, 0x06);
351 reg_r(gspca_dev, 0x27, 0x0000, 1);
352 return gspca_dev->usb_err;
353}
354
355/* -- start the camera -- */
356static int sd_start(struct gspca_dev *gspca_dev)
357{
358 struct sd *sd = (struct sd *) gspca_dev;
359
360 /* initialize the JPEG header */
361 jpeg_define(sd->jpeg_hdr, gspca_dev->height, gspca_dev->width,
362 0x22); /* JPEG 411 */
363
364 /* the JPEG quality seems to be 82% */
365 jpeg_set_qual(sd->jpeg_hdr, 82);
366
367 /* set the controls */
368 setbrightness(gspca_dev);
369 setcontrast(gspca_dev);
370 sethue(gspca_dev);
371 setcolor(gspca_dev);
372 setsharpness(gspca_dev);
373
374 msleep(5);
375 reg_r(gspca_dev, 0x00, 0x2520, 1);
376 msleep(8);
377
378 /* start the capture */
379 wait_status_0(gspca_dev);
380 reg_w(gspca_dev, 0x31, 0x0000, 0x0004);
381 wait_status_1(gspca_dev);
382 wait_status_0(gspca_dev);
383 msleep(200);
384
385 sd->pkt_seq = 0;
386 return gspca_dev->usb_err;
387}
388
389static void sd_stopN(struct gspca_dev *gspca_dev)
390{
391 /* stop the capture */
392 wait_status_0(gspca_dev);
393 reg_w(gspca_dev, 0x31, 0x0000, 0x0000);
394 wait_status_1(gspca_dev);
395 wait_status_0(gspca_dev);
396}
397
398/* move a packet adding 0x00 after 0xff */
399static void add_packet(struct gspca_dev *gspca_dev,
400 u8 *data,
401 int len)
402{
403 int i;
404
405 i = 0;
406 do {
407 if (data[i] == 0xff) {
408 gspca_frame_add(gspca_dev, INTER_PACKET,
409 data, i + 1);
410 len -= i;
411 data += i;
412 *data = 0x00;
413 i = 0;
414 }
415 } while (++i < len);
416 gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
417}
418
419static void sd_pkt_scan(struct gspca_dev *gspca_dev,
420 u8 *data, /* isoc packet */
421 int len) /* iso packet length */
422{
423 struct sd *sd = (struct sd *) gspca_dev;
424 static const u8 ffd9[] = {0xff, 0xd9};
425
426 /* image packets start with:
427 * 02 8n
428 * with <n> bit:
429 * 0x01: even (0) / odd (1) image
430 * 0x02: end of image when set
431 */
432 if (len < 3)
433 return; /* empty packet */
434 if (*data == 0x02) {
435 if (data[1] & 0x02) {
436 sd->pkt_seq = !(data[1] & 1);
437 add_packet(gspca_dev, data + 2, len - 2);
438 gspca_frame_add(gspca_dev, LAST_PACKET,
439 ffd9, 2);
440 return;
441 }
442 if ((data[1] & 1) != sd->pkt_seq)
443 goto err;
444 if (gspca_dev->last_packet_type == LAST_PACKET)
445 gspca_frame_add(gspca_dev, FIRST_PACKET,
446 sd->jpeg_hdr, JPEG_HDR_SZ);
447 add_packet(gspca_dev, data + 2, len - 2);
448 return;
449 }
450err:
451 gspca_dev->last_packet_type = DISCARD_PACKET;
452}
453
454static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
455{
456 struct sd *sd = (struct sd *) gspca_dev;
457
458 sd->brightness = val;
459 if (gspca_dev->streaming)
460 setbrightness(gspca_dev);
461 return gspca_dev->usb_err;
462}
463
464static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
465{
466 struct sd *sd = (struct sd *) gspca_dev;
467
468 *val = sd->brightness;
469 return 0;
470}
471
472static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
473{
474 struct sd *sd = (struct sd *) gspca_dev;
475
476 sd->contrast = val;
477 if (gspca_dev->streaming)
478 setcontrast(gspca_dev);
479 return gspca_dev->usb_err;
480}
481
482static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
483{
484 struct sd *sd = (struct sd *) gspca_dev;
485
486 *val = sd->contrast;
487 return 0;
488}
489
490static int sd_sethue(struct gspca_dev *gspca_dev, __s32 val)
491{
492 struct sd *sd = (struct sd *) gspca_dev;
493
494 sd->hue = val;
495 if (gspca_dev->streaming)
496 sethue(gspca_dev);
497 return gspca_dev->usb_err;
498}
499
500static int sd_gethue(struct gspca_dev *gspca_dev, __s32 *val)
501{
502 struct sd *sd = (struct sd *) gspca_dev;
503
504 *val = sd->hue;
505 return 0;
506}
507
508static int sd_setcolor(struct gspca_dev *gspca_dev, __s32 val)
509{
510 struct sd *sd = (struct sd *) gspca_dev;
511
512 sd->color = val;
513 if (gspca_dev->streaming)
514 setcolor(gspca_dev);
515 return gspca_dev->usb_err;
516}
517
518static int sd_getcolor(struct gspca_dev *gspca_dev, __s32 *val)
519{
520 struct sd *sd = (struct sd *) gspca_dev;
521
522 *val = sd->color;
523 return 0;
524}
525
526static int sd_setsharpness(struct gspca_dev *gspca_dev, __s32 val)
527{
528 struct sd *sd = (struct sd *) gspca_dev;
529
530 sd->sharpness = val;
531 if (gspca_dev->streaming)
532 setsharpness(gspca_dev);
533 return gspca_dev->usb_err;
534}
535
536static int sd_getsharpness(struct gspca_dev *gspca_dev, __s32 *val)
537{
538 struct sd *sd = (struct sd *) gspca_dev;
539
540 *val = sd->sharpness;
541 return 0;
542}
543
544/* sub-driver description */
545static const struct sd_desc sd_desc = {
546 .name = MODULE_NAME,
547 .ctrls = sd_ctrls,
548 .nctrls = ARRAY_SIZE(sd_ctrls),
549 .config = sd_config,
550 .init = sd_init,
551 .isoc_init = sd_isoc_init,
552 .start = sd_start,
553 .stopN = sd_stopN,
554 .pkt_scan = sd_pkt_scan,
555};
556
557/* -- module initialisation -- */
558static const __devinitdata struct usb_device_id device_table[] = {
559 {USB_DEVICE(0x04fc, 0x1528)},
560 {}
561};
562MODULE_DEVICE_TABLE(usb, device_table);
563
564/* -- device connect -- */
565static int sd_probe(struct usb_interface *intf,
566 const struct usb_device_id *id)
567{
568 /* the video interface for isochronous transfer is 1 */
569 if (intf->cur_altsetting->desc.bInterfaceNumber != 1)
570 return -ENODEV;
571
572 return gspca_dev_probe2(intf, id, &sd_desc, sizeof(struct sd),
573 THIS_MODULE);
574}
575
576static struct usb_driver sd_driver = {
577 .name = MODULE_NAME,
578 .id_table = device_table,
579 .probe = sd_probe,
580 .disconnect = gspca_disconnect,
581#ifdef CONFIG_PM
582 .suspend = gspca_suspend,
583 .resume = gspca_resume,
584#endif
585};
586
587/* -- module insert / remove -- */
588static int __init sd_mod_init(void)
589{
590 int ret;
591
592 ret = usb_register(&sd_driver);
593 if (ret < 0)
594 return ret;
595 info("registered");
596 return 0;
597}
598static void __exit sd_mod_exit(void)
599{
600 usb_deregister(&sd_driver);
601 info("deregistered");
602}
603
604module_init(sd_mod_init);
605module_exit(sd_mod_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-11 11:44:56 -0500