1 /*
2 * Driver for USB webcams based on Konica chipset. This
3 * chipset is used in Intel YC76 camera.
4 *
5 * Copyright (C) 2010 Hans de Goede <hdegoede@redhat.com>
6 *
7 * Based on the usbvideo v4l1 konicawc driver which is:
8 *
9 * Copyright (C) 2002 Simon Evans <spse@secret.org.uk>
10 *
11 * The code for making gspca work with a webcam with 2 isoc endpoints was
12 * taken from the benq gspca subdriver which is:
13 *
14 * Copyright (C) 2009 Jean-Francois Moine (http://moinejf.free.fr)
15 *
16 * This program is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License as published by
18 * the Free Software Foundation; either version 2 of the License, or
19 * any later version.
20 *
21 * This program is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 * GNU General Public License for more details.
25 *
26 * You should have received a copy of the GNU General Public License
27 * along with this program; if not, write to the Free Software
28 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
29 */
30
31 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
32
33 #define MODULE_NAME "konica"
34
35 #include <linux/input.h>
36 #include "gspca.h"
37
38 MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
39 MODULE_DESCRIPTION("Konica chipset USB Camera Driver");
40 MODULE_LICENSE("GPL");
41
42 #define WHITEBAL_REG 0x01
43 #define BRIGHTNESS_REG 0x02
44 #define SHARPNESS_REG 0x03
45 #define CONTRAST_REG 0x04
46 #define SATURATION_REG 0x05
47
48 /* specific webcam descriptor */
49 struct sd {
50 struct gspca_dev gspca_dev; /* !! must be the first item */
51 struct urb *last_data_urb;
52 u8 snapshot_pressed;
53 u8 brightness;
54 u8 contrast;
55 u8 saturation;
56 u8 whitebal;
57 u8 sharpness;
58 };
59
60 /* V4L2 controls supported by the driver */
61 static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
62 static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
63 static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val);
64 static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val);
65 static int sd_setsaturation(struct gspca_dev *gspca_dev, __s32 val);
66 static int sd_getsaturation(struct gspca_dev *gspca_dev, __s32 *val);
67 static int sd_setwhitebal(struct gspca_dev *gspca_dev, __s32 val);
68 static int sd_getwhitebal(struct gspca_dev *gspca_dev, __s32 *val);
69 static int sd_setsharpness(struct gspca_dev *gspca_dev, __s32 val);
70 static int sd_getsharpness(struct gspca_dev *gspca_dev, __s32 *val);
71
72 static const struct ctrl sd_ctrls[] = {
73 #define SD_BRIGHTNESS 0
74 {
75 {
76 .id = V4L2_CID_BRIGHTNESS,
77 .type = V4L2_CTRL_TYPE_INTEGER,
78 .name = "Brightness",
79 .minimum = 0,
80 .maximum = 9,
81 .step = 1,
82 #define BRIGHTNESS_DEFAULT 4
83 .default_value = BRIGHTNESS_DEFAULT,
84 .flags = 0,
85 },
86 .set = sd_setbrightness,
87 .get = sd_getbrightness,
88 },
89 #define SD_CONTRAST 1
90 {
91 {
92 .id = V4L2_CID_CONTRAST,
93 .type = V4L2_CTRL_TYPE_INTEGER,
94 .name = "Contrast",
95 .minimum = 0,
96 .maximum = 9,
97 .step = 4,
98 #define CONTRAST_DEFAULT 10
99 .default_value = CONTRAST_DEFAULT,
100 .flags = 0,
101 },
102 .set = sd_setcontrast,
103 .get = sd_getcontrast,
104 },
105 #define SD_SATURATION 2
106 {
107 {
108 .id = V4L2_CID_SATURATION,
109 .type = V4L2_CTRL_TYPE_INTEGER,
110 .name = "Saturation",
111 .minimum = 0,
112 .maximum = 9,
113 .step = 1,
114 #define SATURATION_DEFAULT 4
115 .default_value = SATURATION_DEFAULT,
116 .flags = 0,
117 },
118 .set = sd_setsaturation,
119 .get = sd_getsaturation,
120 },
121 #define SD_WHITEBAL 3
122 {
123 {
124 .id = V4L2_CID_WHITE_BALANCE_TEMPERATURE,
125 .type = V4L2_CTRL_TYPE_INTEGER,
126 .name = "White Balance",
127 .minimum = 0,
128 .maximum = 33,
129 .step = 1,
130 #define WHITEBAL_DEFAULT 25
131 .default_value = WHITEBAL_DEFAULT,
132 .flags = 0,
133 },
134 .set = sd_setwhitebal,
135 .get = sd_getwhitebal,
136 },
137 #define SD_SHARPNESS 4
138 {
139 {
140 .id = V4L2_CID_SHARPNESS,
141 .type = V4L2_CTRL_TYPE_INTEGER,
142 .name = "Sharpness",
143 .minimum = 0,
144 .maximum = 9,
145 .step = 1,
146 #define SHARPNESS_DEFAULT 4
147 .default_value = SHARPNESS_DEFAULT,
148 .flags = 0,
149 },
150 .set = sd_setsharpness,
151 .get = sd_getsharpness,
152 },
153 };
154
155 /* .priv is what goes to register 8 for this mode, known working values:
156 0x00 -> 176x144, cropped
157 0x01 -> 176x144, cropped
158 0x02 -> 176x144, cropped
159 0x03 -> 176x144, cropped
160 0x04 -> 176x144, binned
161 0x05 -> 320x240
162 0x06 -> 320x240
163 0x07 -> 160x120, cropped
164 0x08 -> 160x120, cropped
165 0x09 -> 160x120, binned (note has 136 lines)
166 0x0a -> 160x120, binned (note has 136 lines)
167 0x0b -> 160x120, cropped
168 */
169 static const struct v4l2_pix_format vga_mode[] = {
170 {160, 120, V4L2_PIX_FMT_KONICA420, V4L2_FIELD_NONE,
171 .bytesperline = 160,
172 .sizeimage = 160 * 136 * 3 / 2 + 960,
173 .colorspace = V4L2_COLORSPACE_SRGB,
174 .priv = 0x0a},
175 {176, 144, V4L2_PIX_FMT_KONICA420, V4L2_FIELD_NONE,
176 .bytesperline = 176,
177 .sizeimage = 176 * 144 * 3 / 2 + 960,
178 .colorspace = V4L2_COLORSPACE_SRGB,
179 .priv = 0x04},
180 {320, 240, V4L2_PIX_FMT_KONICA420, V4L2_FIELD_NONE,
181 .bytesperline = 320,
182 .sizeimage = 320 * 240 * 3 / 2 + 960,
183 .colorspace = V4L2_COLORSPACE_SRGB,
184 .priv = 0x05},
185 };
186
187 static void sd_isoc_irq(struct urb *urb);
188
reg_w(struct gspca_dev * gspca_dev,u16 value,u16 index)189 static void reg_w(struct gspca_dev *gspca_dev, u16 value, u16 index)
190 {
191 struct usb_device *dev = gspca_dev->dev;
192 int ret;
193
194 if (gspca_dev->usb_err < 0)
195 return;
196 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
197 0x02,
198 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
199 value,
200 index,
201 NULL,
202 0,
203 1000);
204 if (ret < 0) {
205 pr_err("reg_w err %d\n", ret);
206 gspca_dev->usb_err = ret;
207 }
208 }
209
reg_r(struct gspca_dev * gspca_dev,u16 value,u16 index)210 static void reg_r(struct gspca_dev *gspca_dev, u16 value, u16 index)
211 {
212 struct usb_device *dev = gspca_dev->dev;
213 int ret;
214
215 if (gspca_dev->usb_err < 0)
216 return;
217 ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
218 0x03,
219 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
220 value,
221 index,
222 gspca_dev->usb_buf,
223 2,
224 1000);
225 if (ret < 0) {
226 pr_err("reg_w err %d\n", ret);
227 gspca_dev->usb_err = ret;
228 }
229 }
230
konica_stream_on(struct gspca_dev * gspca_dev)231 static void konica_stream_on(struct gspca_dev *gspca_dev)
232 {
233 reg_w(gspca_dev, 1, 0x0b);
234 }
235
konica_stream_off(struct gspca_dev * gspca_dev)236 static void konica_stream_off(struct gspca_dev *gspca_dev)
237 {
238 reg_w(gspca_dev, 0, 0x0b);
239 }
240
241 /* this function is called at probe time */
sd_config(struct gspca_dev * gspca_dev,const struct usb_device_id * id)242 static int sd_config(struct gspca_dev *gspca_dev,
243 const struct usb_device_id *id)
244 {
245 struct sd *sd = (struct sd *) gspca_dev;
246
247 gspca_dev->cam.cam_mode = vga_mode;
248 gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode);
249 gspca_dev->cam.no_urb_create = 1;
250
251 sd->brightness = BRIGHTNESS_DEFAULT;
252 sd->contrast = CONTRAST_DEFAULT;
253 sd->saturation = SATURATION_DEFAULT;
254 sd->whitebal = WHITEBAL_DEFAULT;
255 sd->sharpness = SHARPNESS_DEFAULT;
256
257 return 0;
258 }
259
260 /* this function is called at probe and resume time */
sd_init(struct gspca_dev * gspca_dev)261 static int sd_init(struct gspca_dev *gspca_dev)
262 {
263 /* HDG not sure if these 2 reads are needed */
264 reg_r(gspca_dev, 0, 0x10);
265 PDEBUG(D_PROBE, "Reg 0x10 reads: %02x %02x",
266 gspca_dev->usb_buf[0], gspca_dev->usb_buf[1]);
267 reg_r(gspca_dev, 0, 0x10);
268 PDEBUG(D_PROBE, "Reg 0x10 reads: %02x %02x",
269 gspca_dev->usb_buf[0], gspca_dev->usb_buf[1]);
270 reg_w(gspca_dev, 0, 0x0d);
271
272 return 0;
273 }
274
sd_start(struct gspca_dev * gspca_dev)275 static int sd_start(struct gspca_dev *gspca_dev)
276 {
277 struct sd *sd = (struct sd *) gspca_dev;
278 struct urb *urb;
279 int i, n, packet_size;
280 struct usb_host_interface *alt;
281 struct usb_interface *intf;
282
283 intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface);
284 alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt);
285 if (!alt) {
286 pr_err("Couldn't get altsetting\n");
287 return -EIO;
288 }
289
290 packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
291
292 reg_w(gspca_dev, sd->brightness, BRIGHTNESS_REG);
293 reg_w(gspca_dev, sd->whitebal, WHITEBAL_REG);
294 reg_w(gspca_dev, sd->contrast, CONTRAST_REG);
295 reg_w(gspca_dev, sd->saturation, SATURATION_REG);
296 reg_w(gspca_dev, sd->sharpness, SHARPNESS_REG);
297
298 n = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;
299 reg_w(gspca_dev, n, 0x08);
300
301 konica_stream_on(gspca_dev);
302
303 if (gspca_dev->usb_err)
304 return gspca_dev->usb_err;
305
306 /* create 4 URBs - 2 on endpoint 0x83 and 2 on 0x082 */
307 #if MAX_NURBS < 4
308 #error "Not enough URBs in the gspca table"
309 #endif
310 #define SD_NPKT 32
311 for (n = 0; n < 4; n++) {
312 i = n & 1 ? 0 : 1;
313 packet_size =
314 le16_to_cpu(alt->endpoint[i].desc.wMaxPacketSize);
315 urb = usb_alloc_urb(SD_NPKT, GFP_KERNEL);
316 if (!urb) {
317 pr_err("usb_alloc_urb failed\n");
318 return -ENOMEM;
319 }
320 gspca_dev->urb[n] = urb;
321 urb->transfer_buffer = usb_alloc_coherent(gspca_dev->dev,
322 packet_size * SD_NPKT,
323 GFP_KERNEL,
324 &urb->transfer_dma);
325 if (urb->transfer_buffer == NULL) {
326 pr_err("usb_buffer_alloc failed\n");
327 return -ENOMEM;
328 }
329
330 urb->dev = gspca_dev->dev;
331 urb->context = gspca_dev;
332 urb->transfer_buffer_length = packet_size * SD_NPKT;
333 urb->pipe = usb_rcvisocpipe(gspca_dev->dev,
334 n & 1 ? 0x81 : 0x82);
335 urb->transfer_flags = URB_ISO_ASAP
336 | URB_NO_TRANSFER_DMA_MAP;
337 urb->interval = 1;
338 urb->complete = sd_isoc_irq;
339 urb->number_of_packets = SD_NPKT;
340 for (i = 0; i < SD_NPKT; i++) {
341 urb->iso_frame_desc[i].length = packet_size;
342 urb->iso_frame_desc[i].offset = packet_size * i;
343 }
344 }
345
346 return 0;
347 }
348
sd_stopN(struct gspca_dev * gspca_dev)349 static void sd_stopN(struct gspca_dev *gspca_dev)
350 {
351 struct sd *sd = (struct sd *) gspca_dev;
352
353 konica_stream_off(gspca_dev);
354 #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
355 /* Don't keep the button in the pressed state "forever" if it was
356 pressed when streaming is stopped */
357 if (sd->snapshot_pressed) {
358 input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0);
359 input_sync(gspca_dev->input_dev);
360 sd->snapshot_pressed = 0;
361 }
362 #endif
363 }
364
365 /* reception of an URB */
sd_isoc_irq(struct urb * urb)366 static void sd_isoc_irq(struct urb *urb)
367 {
368 struct gspca_dev *gspca_dev = (struct gspca_dev *) urb->context;
369 struct sd *sd = (struct sd *) gspca_dev;
370 struct urb *data_urb, *status_urb;
371 u8 *data;
372 int i, st;
373
374 PDEBUG(D_PACK, "sd isoc irq");
375 if (!gspca_dev->streaming)
376 return;
377
378 if (urb->status != 0) {
379 if (urb->status == -ESHUTDOWN)
380 return; /* disconnection */
381 #ifdef CONFIG_PM
382 if (gspca_dev->frozen)
383 return;
384 #endif
385 PDEBUG(D_ERR, "urb status: %d", urb->status);
386 st = usb_submit_urb(urb, GFP_ATOMIC);
387 if (st < 0)
388 pr_err("resubmit urb error %d\n", st);
389 return;
390 }
391
392 /* if this is a data URB (ep 0x82), wait */
393 if (urb->transfer_buffer_length > 32) {
394 sd->last_data_urb = urb;
395 return;
396 }
397
398 status_urb = urb;
399 data_urb = sd->last_data_urb;
400 sd->last_data_urb = NULL;
401
402 if (!data_urb || data_urb->start_frame != status_urb->start_frame) {
403 PDEBUG(D_ERR|D_PACK, "lost sync on frames");
404 goto resubmit;
405 }
406
407 if (data_urb->number_of_packets != status_urb->number_of_packets) {
408 PDEBUG(D_ERR|D_PACK,
409 "no packets does not match, data: %d, status: %d",
410 data_urb->number_of_packets,
411 status_urb->number_of_packets);
412 goto resubmit;
413 }
414
415 for (i = 0; i < status_urb->number_of_packets; i++) {
416 if (data_urb->iso_frame_desc[i].status ||
417 status_urb->iso_frame_desc[i].status) {
418 PDEBUG(D_ERR|D_PACK,
419 "pkt %d data-status %d, status-status %d", i,
420 data_urb->iso_frame_desc[i].status,
421 status_urb->iso_frame_desc[i].status);
422 gspca_dev->last_packet_type = DISCARD_PACKET;
423 continue;
424 }
425
426 if (status_urb->iso_frame_desc[i].actual_length != 1) {
427 PDEBUG(D_ERR|D_PACK,
428 "bad status packet length %d",
429 status_urb->iso_frame_desc[i].actual_length);
430 gspca_dev->last_packet_type = DISCARD_PACKET;
431 continue;
432 }
433
434 st = *((u8 *)status_urb->transfer_buffer
435 + status_urb->iso_frame_desc[i].offset);
436
437 data = (u8 *)data_urb->transfer_buffer
438 + data_urb->iso_frame_desc[i].offset;
439
440 /* st: 0x80-0xff: frame start with frame number (ie 0-7f)
441 * otherwise:
442 * bit 0 0: keep packet
443 * 1: drop packet (padding data)
444 *
445 * bit 4 0 button not clicked
446 * 1 button clicked
447 * button is used to `take a picture' (in software)
448 */
449 if (st & 0x80) {
450 gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
451 gspca_frame_add(gspca_dev, FIRST_PACKET, NULL, 0);
452 } else {
453 #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
454 u8 button_state = st & 0x40 ? 1 : 0;
455 if (sd->snapshot_pressed != button_state) {
456 input_report_key(gspca_dev->input_dev,
457 KEY_CAMERA,
458 button_state);
459 input_sync(gspca_dev->input_dev);
460 sd->snapshot_pressed = button_state;
461 }
462 #endif
463 if (st & 0x01)
464 continue;
465 }
466 gspca_frame_add(gspca_dev, INTER_PACKET, data,
467 data_urb->iso_frame_desc[i].actual_length);
468 }
469
470 resubmit:
471 if (data_urb) {
472 st = usb_submit_urb(data_urb, GFP_ATOMIC);
473 if (st < 0)
474 PDEBUG(D_ERR|D_PACK,
475 "usb_submit_urb(data_urb) ret %d", st);
476 }
477 st = usb_submit_urb(status_urb, GFP_ATOMIC);
478 if (st < 0)
479 pr_err("usb_submit_urb(status_urb) ret %d\n", st);
480 }
481
sd_setbrightness(struct gspca_dev * gspca_dev,__s32 val)482 static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
483 {
484 struct sd *sd = (struct sd *) gspca_dev;
485
486 sd->brightness = val;
487 if (gspca_dev->streaming) {
488 konica_stream_off(gspca_dev);
489 reg_w(gspca_dev, sd->brightness, BRIGHTNESS_REG);
490 konica_stream_on(gspca_dev);
491 }
492
493 return 0;
494 }
495
sd_getbrightness(struct gspca_dev * gspca_dev,__s32 * val)496 static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
497 {
498 struct sd *sd = (struct sd *) gspca_dev;
499
500 *val = sd->brightness;
501
502 return 0;
503 }
504
sd_setcontrast(struct gspca_dev * gspca_dev,__s32 val)505 static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
506 {
507 struct sd *sd = (struct sd *) gspca_dev;
508
509 sd->contrast = val;
510 if (gspca_dev->streaming) {
511 konica_stream_off(gspca_dev);
512 reg_w(gspca_dev, sd->contrast, CONTRAST_REG);
513 konica_stream_on(gspca_dev);
514 }
515
516 return 0;
517 }
518
sd_getcontrast(struct gspca_dev * gspca_dev,__s32 * val)519 static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
520 {
521 struct sd *sd = (struct sd *) gspca_dev;
522
523 *val = sd->contrast;
524
525 return 0;
526 }
527
sd_setsaturation(struct gspca_dev * gspca_dev,__s32 val)528 static int sd_setsaturation(struct gspca_dev *gspca_dev, __s32 val)
529 {
530 struct sd *sd = (struct sd *) gspca_dev;
531
532 sd->saturation = val;
533 if (gspca_dev->streaming) {
534 konica_stream_off(gspca_dev);
535 reg_w(gspca_dev, sd->saturation, SATURATION_REG);
536 konica_stream_on(gspca_dev);
537 }
538 return 0;
539 }
540
sd_getsaturation(struct gspca_dev * gspca_dev,__s32 * val)541 static int sd_getsaturation(struct gspca_dev *gspca_dev, __s32 *val)
542 {
543 struct sd *sd = (struct sd *) gspca_dev;
544
545 *val = sd->saturation;
546
547 return 0;
548 }
549
sd_setwhitebal(struct gspca_dev * gspca_dev,__s32 val)550 static int sd_setwhitebal(struct gspca_dev *gspca_dev, __s32 val)
551 {
552 struct sd *sd = (struct sd *) gspca_dev;
553
554 sd->whitebal = val;
555 if (gspca_dev->streaming) {
556 konica_stream_off(gspca_dev);
557 reg_w(gspca_dev, sd->whitebal, WHITEBAL_REG);
558 konica_stream_on(gspca_dev);
559 }
560 return 0;
561 }
562
sd_getwhitebal(struct gspca_dev * gspca_dev,__s32 * val)563 static int sd_getwhitebal(struct gspca_dev *gspca_dev, __s32 *val)
564 {
565 struct sd *sd = (struct sd *) gspca_dev;
566
567 *val = sd->whitebal;
568
569 return 0;
570 }
571
sd_setsharpness(struct gspca_dev * gspca_dev,__s32 val)572 static int sd_setsharpness(struct gspca_dev *gspca_dev, __s32 val)
573 {
574 struct sd *sd = (struct sd *) gspca_dev;
575
576 sd->sharpness = val;
577 if (gspca_dev->streaming) {
578 konica_stream_off(gspca_dev);
579 reg_w(gspca_dev, sd->sharpness, SHARPNESS_REG);
580 konica_stream_on(gspca_dev);
581 }
582 return 0;
583 }
584
sd_getsharpness(struct gspca_dev * gspca_dev,__s32 * val)585 static int sd_getsharpness(struct gspca_dev *gspca_dev, __s32 *val)
586 {
587 struct sd *sd = (struct sd *) gspca_dev;
588
589 *val = sd->sharpness;
590
591 return 0;
592 }
593
594 /* sub-driver description */
595 static const struct sd_desc sd_desc = {
596 .name = MODULE_NAME,
597 .ctrls = sd_ctrls,
598 .nctrls = ARRAY_SIZE(sd_ctrls),
599 .config = sd_config,
600 .init = sd_init,
601 .start = sd_start,
602 .stopN = sd_stopN,
603 #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
604 .other_input = 1,
605 #endif
606 };
607
608 /* -- module initialisation -- */
609 static const struct usb_device_id device_table[] = {
610 {USB_DEVICE(0x04c8, 0x0720)}, /* Intel YC 76 */
611 {}
612 };
613 MODULE_DEVICE_TABLE(usb, device_table);
614
615 /* -- device connect -- */
sd_probe(struct usb_interface * intf,const struct usb_device_id * id)616 static int sd_probe(struct usb_interface *intf,
617 const struct usb_device_id *id)
618 {
619 return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
620 THIS_MODULE);
621 }
622
623 static struct usb_driver sd_driver = {
624 .name = MODULE_NAME,
625 .id_table = device_table,
626 .probe = sd_probe,
627 .disconnect = gspca_disconnect,
628 #ifdef CONFIG_PM
629 .suspend = gspca_suspend,
630 .resume = gspca_resume,
631 #endif
632 };
633
634 module_usb_driver(sd_driver);
635