Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze
[linux-2.6] / drivers / media / video / usbvideo / konicawc.c
1 /*
2  * konicawc.c - konica webcam driver
3  *
4  * Author: Simon Evans <spse@secret.org.uk>
5  *
6  * Copyright (C) 2002 Simon Evans
7  *
8  * Licence: GPL
9  *
10  * Driver for USB webcams based on Konica chipset. This
11  * chipset is used in Intel YC76 camera.
12  *
13  */
14
15 #include <linux/kernel.h>
16 #include <linux/module.h>
17 #include <linux/init.h>
18 #include <linux/usb/input.h>
19
20 #include "usbvideo.h"
21
22 #define MAX_BRIGHTNESS  108
23 #define MAX_CONTRAST    108
24 #define MAX_SATURATION  108
25 #define MAX_SHARPNESS   108
26 #define MAX_WHITEBAL    372
27 #define MAX_SPEED       6
28
29
30 #define MAX_CAMERAS     1
31
32 #define DRIVER_VERSION  "v1.4"
33 #define DRIVER_DESC     "Konica Webcam driver"
34
35 enum ctrl_req {
36         SetWhitebal     = 0x01,
37         SetBrightness   = 0x02,
38         SetSharpness    = 0x03,
39         SetContrast     = 0x04,
40         SetSaturation   = 0x05,
41 };
42
43
44 enum frame_sizes {
45         SIZE_160X120    = 0,
46         SIZE_160X136    = 1,
47         SIZE_176X144    = 2,
48         SIZE_320X240    = 3,
49
50 };
51
52 #define MAX_FRAME_SIZE  SIZE_320X240
53
54 static struct usbvideo *cams;
55
56 #ifdef CONFIG_USB_DEBUG
57 static int debug;
58 #define DEBUG(n, format, arg...) \
59         if (n <= debug) {        \
60                 printk(KERN_DEBUG __FILE__ ":%s(): " format "\n", __func__ , ## arg); \
61         }
62 #else
63 #define DEBUG(n, arg...)
64 static const int debug;
65 #endif
66
67
68 /* Some default values for initial camera settings,
69    can be set by modprobe */
70
71 static int size;
72 static int speed = 6;           /* Speed (fps) 0 (slowest) to 6 (fastest) */
73 static int brightness = MAX_BRIGHTNESS/2;
74 static int contrast =   MAX_CONTRAST/2;
75 static int saturation = MAX_SATURATION/2;
76 static int sharpness =  MAX_SHARPNESS/2;
77 static int whitebal =   3*(MAX_WHITEBAL/4);
78
79 static const int spd_to_iface[] = { 1, 0, 3, 2, 4, 5, 6 };
80
81 /* These FPS speeds are from the windows config box. They are
82  * indexed on size (0-2) and speed (0-6). Divide by 3 to get the
83  * real fps.
84  */
85
86 static const int spd_to_fps[][7] = { { 24, 40, 48, 60, 72, 80, 100 },
87                                { 24, 40, 48, 60, 72, 80, 100 },
88                                { 18, 30, 36, 45, 54, 60, 75  },
89                                { 6,  10, 12, 15, 18, 21, 25  } };
90
91 struct cam_size {
92         u16     width;
93         u16     height;
94         u8      cmd;
95 };
96
97 static const struct cam_size camera_sizes[] = { { 160, 120, 0x7 },
98                                           { 160, 136, 0xa },
99                                           { 176, 144, 0x4 },
100                                           { 320, 240, 0x5 } };
101
102 struct konicawc {
103         u8 brightness;          /* camera uses 0 - 9, x11 for real value */
104         u8 contrast;            /* as above */
105         u8 saturation;          /* as above */
106         u8 sharpness;           /* as above */
107         u8 white_bal;           /* 0 - 33, x11 for real value */
108         u8 speed;               /* Stored as 0 - 6, used as index in spd_to_* (above) */
109         u8 size;                /* Frame Size */
110         int height;
111         int width;
112         struct urb *sts_urb[USBVIDEO_NUMSBUF];
113         u8 sts_buf[USBVIDEO_NUMSBUF][FRAMES_PER_DESC];
114         struct urb *last_data_urb;
115         int lastframe;
116         int cur_frame_size;     /* number of bytes in current frame size */
117         int maxline;            /* number of lines per frame */
118         int yplanesz;           /* Number of bytes in the Y plane */
119         unsigned int buttonsts:1;
120 #ifdef CONFIG_INPUT
121         struct input_dev *input;
122         char input_physname[64];
123 #endif
124 };
125
126
127 #define konicawc_set_misc(uvd, req, value, index)               konicawc_ctrl_msg(uvd, USB_DIR_OUT, req, value, index, NULL, 0)
128 #define konicawc_get_misc(uvd, req, value, index, buf, sz)      konicawc_ctrl_msg(uvd, USB_DIR_IN, req, value, index, buf, sz)
129 #define konicawc_set_value(uvd, value, index)                   konicawc_ctrl_msg(uvd, USB_DIR_OUT, 2, value, index, NULL, 0)
130
131
132 static int konicawc_ctrl_msg(struct uvd *uvd, u8 dir, u8 request, u16 value, u16 index, void *buf, int len)
133 {
134         int retval = usb_control_msg(uvd->dev,
135                 dir ? usb_rcvctrlpipe(uvd->dev, 0) : usb_sndctrlpipe(uvd->dev, 0),
136                     request, 0x40 | dir, value, index, buf, len, 1000);
137         return retval < 0 ? retval : 0;
138 }
139
140
141 static inline void konicawc_camera_on(struct uvd *uvd)
142 {
143         DEBUG(0, "camera on");
144         konicawc_set_misc(uvd, 0x2, 1, 0x0b);
145 }
146
147
148 static inline void konicawc_camera_off(struct uvd *uvd)
149 {
150         DEBUG(0, "camera off");
151         konicawc_set_misc(uvd, 0x2, 0, 0x0b);
152 }
153
154
155 static void konicawc_set_camera_size(struct uvd *uvd)
156 {
157         struct konicawc *cam = (struct konicawc *)uvd->user_data;
158
159         konicawc_set_misc(uvd, 0x2, camera_sizes[cam->size].cmd, 0x08);
160         cam->width = camera_sizes[cam->size].width;
161         cam->height = camera_sizes[cam->size].height;
162         cam->yplanesz = cam->height * cam->width;
163         cam->cur_frame_size = (cam->yplanesz * 3) / 2;
164         cam->maxline = cam->yplanesz / 256;
165         uvd->videosize = VIDEOSIZE(cam->width, cam->height);
166 }
167
168
169 static int konicawc_setup_on_open(struct uvd *uvd)
170 {
171         struct konicawc *cam = (struct konicawc *)uvd->user_data;
172
173         DEBUG(1, "setting brightness to %d (%d)", cam->brightness,
174             cam->brightness * 11);
175         konicawc_set_value(uvd, cam->brightness, SetBrightness);
176         DEBUG(1, "setting white balance to %d (%d)", cam->white_bal,
177             cam->white_bal * 11);
178         konicawc_set_value(uvd, cam->white_bal, SetWhitebal);
179         DEBUG(1, "setting contrast to %d (%d)", cam->contrast,
180             cam->contrast * 11);
181         konicawc_set_value(uvd, cam->contrast, SetContrast);
182         DEBUG(1, "setting saturation to %d (%d)", cam->saturation,
183             cam->saturation * 11);
184         konicawc_set_value(uvd, cam->saturation, SetSaturation);
185         DEBUG(1, "setting sharpness to %d (%d)", cam->sharpness,
186             cam->sharpness * 11);
187         konicawc_set_value(uvd, cam->sharpness, SetSharpness);
188         konicawc_set_camera_size(uvd);
189         cam->lastframe = -2;
190         cam->buttonsts = 0;
191         return 0;
192 }
193
194
195 static void konicawc_adjust_picture(struct uvd *uvd)
196 {
197         struct konicawc *cam = (struct konicawc *)uvd->user_data;
198
199         konicawc_camera_off(uvd);
200         DEBUG(1, "new brightness: %d", uvd->vpic.brightness);
201         uvd->vpic.brightness = (uvd->vpic.brightness > MAX_BRIGHTNESS) ? MAX_BRIGHTNESS : uvd->vpic.brightness;
202         if(cam->brightness != uvd->vpic.brightness / 11) {
203            cam->brightness = uvd->vpic.brightness / 11;
204            DEBUG(1, "setting brightness to %d (%d)", cam->brightness,
205                cam->brightness * 11);
206            konicawc_set_value(uvd, cam->brightness, SetBrightness);
207         }
208
209         DEBUG(1, "new contrast: %d", uvd->vpic.contrast);
210         uvd->vpic.contrast = (uvd->vpic.contrast > MAX_CONTRAST) ? MAX_CONTRAST : uvd->vpic.contrast;
211         if(cam->contrast != uvd->vpic.contrast / 11) {
212                 cam->contrast = uvd->vpic.contrast / 11;
213                 DEBUG(1, "setting contrast to %d (%d)", cam->contrast,
214                     cam->contrast * 11);
215                 konicawc_set_value(uvd, cam->contrast, SetContrast);
216         }
217         konicawc_camera_on(uvd);
218 }
219
220 #ifdef CONFIG_INPUT
221
222 static void konicawc_register_input(struct konicawc *cam, struct usb_device *dev)
223 {
224         struct input_dev *input_dev;
225         int error;
226
227         usb_make_path(dev, cam->input_physname, sizeof(cam->input_physname));
228         strncat(cam->input_physname, "/input0", sizeof(cam->input_physname));
229
230         cam->input = input_dev = input_allocate_device();
231         if (!input_dev) {
232                 dev_warn(&dev->dev,
233                          "Not enough memory for camera's input device\n");
234                 return;
235         }
236
237         input_dev->name = "Konicawc snapshot button";
238         input_dev->phys = cam->input_physname;
239         usb_to_input_id(dev, &input_dev->id);
240         input_dev->dev.parent = &dev->dev;
241
242         input_dev->evbit[0] = BIT_MASK(EV_KEY);
243         input_dev->keybit[BIT_WORD(BTN_0)] = BIT_MASK(BTN_0);
244
245         error = input_register_device(cam->input);
246         if (error) {
247                 dev_warn(&dev->dev,
248                          "Failed to register camera's input device, err: %d\n",
249                          error);
250                 input_free_device(cam->input);
251                 cam->input = NULL;
252         }
253 }
254
255 static void konicawc_unregister_input(struct konicawc *cam)
256 {
257         if (cam->input) {
258                 input_unregister_device(cam->input);
259                 cam->input = NULL;
260         }
261 }
262
263 static void konicawc_report_buttonstat(struct konicawc *cam)
264 {
265         if (cam->input) {
266                 input_report_key(cam->input, BTN_0, cam->buttonsts);
267                 input_sync(cam->input);
268         }
269 }
270
271 #else
272
273 static inline void konicawc_register_input(struct konicawc *cam, struct usb_device *dev) { }
274 static inline void konicawc_unregister_input(struct konicawc *cam) { }
275 static inline void konicawc_report_buttonstat(struct konicawc *cam) { }
276
277 #endif /* CONFIG_INPUT */
278
279 static int konicawc_compress_iso(struct uvd *uvd, struct urb *dataurb, struct urb *stsurb)
280 {
281         char *cdata;
282         int i, totlen = 0;
283         unsigned char *status = stsurb->transfer_buffer;
284         int keep = 0, discard = 0, bad = 0;
285         struct konicawc *cam = (struct konicawc *)uvd->user_data;
286
287         for (i = 0; i < dataurb->number_of_packets; i++) {
288                 int button = cam->buttonsts;
289                 unsigned char sts;
290                 int n = dataurb->iso_frame_desc[i].actual_length;
291                 int st = dataurb->iso_frame_desc[i].status;
292                 cdata = dataurb->transfer_buffer +
293                         dataurb->iso_frame_desc[i].offset;
294
295                 /* Detect and ignore errored packets */
296                 if (st < 0) {
297                         DEBUG(1, "Data error: packet=%d. len=%d. status=%d.",
298                               i, n, st);
299                         uvd->stats.iso_err_count++;
300                         continue;
301                 }
302
303                 /* Detect and ignore empty packets */
304                 if (n <= 0) {
305                         uvd->stats.iso_skip_count++;
306                         continue;
307                 }
308
309                 /* See what the status data said about the packet */
310                 sts = *(status+stsurb->iso_frame_desc[i].offset);
311
312                 /* sts: 0x80-0xff: frame start with frame number (ie 0-7f)
313                  * otherwise:
314                  * bit 0 0: keep packet
315                  *       1: drop packet (padding data)
316                  *
317                  * bit 4 0 button not clicked
318                  *       1 button clicked
319                  * button is used to `take a picture' (in software)
320                  */
321
322                 if(sts < 0x80) {
323                         button = !!(sts & 0x40);
324                         sts &= ~0x40;
325                 }
326
327                 /* work out the button status, but don't do
328                    anything with it for now */
329
330                 if(button != cam->buttonsts) {
331                         DEBUG(2, "button: %sclicked", button ? "" : "un");
332                         cam->buttonsts = button;
333                         konicawc_report_buttonstat(cam);
334                 }
335
336                 if(sts == 0x01) { /* drop frame */
337                         discard++;
338                         continue;
339                 }
340
341                 if((sts > 0x01) && (sts < 0x80)) {
342                         dev_info(&uvd->dev->dev, "unknown status %2.2x\n",
343                                  sts);
344                         bad++;
345                         continue;
346                 }
347                 if(!sts && cam->lastframe == -2) {
348                         DEBUG(2, "dropping frame looking for image start");
349                         continue;
350                 }
351
352                 keep++;
353                 if(sts & 0x80) { /* frame start */
354                         unsigned char marker[] = { 0, 0xff, 0, 0x00 };
355
356                         if(cam->lastframe == -2) {
357                                 DEBUG(2, "found initial image");
358                                 cam->lastframe = -1;
359                         }
360
361                         marker[3] = sts & 0x7F;
362                         RingQueue_Enqueue(&uvd->dp, marker, 4);
363                         totlen += 4;
364                 }
365
366                 totlen += n;    /* Little local accounting */
367                 RingQueue_Enqueue(&uvd->dp, cdata, n);
368         }
369         DEBUG(8, "finished: keep = %d discard = %d bad = %d added %d bytes",
370                     keep, discard, bad, totlen);
371         return totlen;
372 }
373
374
375 static void resubmit_urb(struct uvd *uvd, struct urb *urb)
376 {
377         int i, ret;
378         for (i = 0; i < FRAMES_PER_DESC; i++) {
379                 urb->iso_frame_desc[i].status = 0;
380         }
381         urb->dev = uvd->dev;
382         urb->status = 0;
383         ret = usb_submit_urb(urb, GFP_ATOMIC);
384         DEBUG(3, "submitting urb of length %d", urb->transfer_buffer_length);
385         if(ret)
386                 err("usb_submit_urb error (%d)", ret);
387
388 }
389
390
391 static void konicawc_isoc_irq(struct urb *urb)
392 {
393         struct uvd *uvd = urb->context;
394         struct konicawc *cam = (struct konicawc *)uvd->user_data;
395
396         /* We don't want to do anything if we are about to be removed! */
397         if (!CAMERA_IS_OPERATIONAL(uvd))
398                 return;
399
400         if (!uvd->streaming) {
401                 DEBUG(1, "Not streaming, but interrupt!");
402                 return;
403         }
404
405         DEBUG(3, "got frame %d len = %d buflen =%d", urb->start_frame, urb->actual_length, urb->transfer_buffer_length);
406
407         uvd->stats.urb_count++;
408
409         if (urb->transfer_buffer_length > 32) {
410                 cam->last_data_urb = urb;
411                 return;
412         }
413         /* Copy the data received into ring queue */
414         if(cam->last_data_urb) {
415                 int len = 0;
416                 if(urb->start_frame != cam->last_data_urb->start_frame)
417                         err("Lost sync on frames");
418                 else if (!urb->status && !cam->last_data_urb->status)
419                         len = konicawc_compress_iso(uvd, cam->last_data_urb, urb);
420
421                 resubmit_urb(uvd, cam->last_data_urb);
422                 resubmit_urb(uvd, urb);
423                 cam->last_data_urb = NULL;
424                 uvd->stats.urb_length = len;
425                 uvd->stats.data_count += len;
426                 if(len)
427                         RingQueue_WakeUpInterruptible(&uvd->dp);
428                 return;
429         }
430         return;
431 }
432
433
434 static int konicawc_start_data(struct uvd *uvd)
435 {
436         struct usb_device *dev = uvd->dev;
437         int i, errFlag;
438         struct konicawc *cam = (struct konicawc *)uvd->user_data;
439         int pktsz;
440         struct usb_interface *intf;
441         struct usb_host_interface *interface = NULL;
442
443         intf = usb_ifnum_to_if(dev, uvd->iface);
444         if (intf)
445                 interface = usb_altnum_to_altsetting(intf,
446                                 spd_to_iface[cam->speed]);
447         if (!interface)
448                 return -ENXIO;
449         pktsz = le16_to_cpu(interface->endpoint[1].desc.wMaxPacketSize);
450         DEBUG(1, "pktsz = %d", pktsz);
451         if (!CAMERA_IS_OPERATIONAL(uvd)) {
452                 err("Camera is not operational");
453                 return -EFAULT;
454         }
455         uvd->curframe = -1;
456         konicawc_camera_on(uvd);
457         /* Alternate interface 1 is is the biggest frame size */
458         i = usb_set_interface(dev, uvd->iface, uvd->ifaceAltActive);
459         if (i < 0) {
460                 err("usb_set_interface error");
461                 uvd->last_error = i;
462                 return -EBUSY;
463         }
464
465         /* We double buffer the Iso lists */
466         for (i=0; i < USBVIDEO_NUMSBUF; i++) {
467                 int j, k;
468                 struct urb *urb = uvd->sbuf[i].urb;
469                 urb->dev = dev;
470                 urb->context = uvd;
471                 urb->pipe = usb_rcvisocpipe(dev, uvd->video_endp);
472                 urb->interval = 1;
473                 urb->transfer_flags = URB_ISO_ASAP;
474                 urb->transfer_buffer = uvd->sbuf[i].data;
475                 urb->complete = konicawc_isoc_irq;
476                 urb->number_of_packets = FRAMES_PER_DESC;
477                 urb->transfer_buffer_length = pktsz * FRAMES_PER_DESC;
478                 for (j=k=0; j < FRAMES_PER_DESC; j++, k += pktsz) {
479                         urb->iso_frame_desc[j].offset = k;
480                         urb->iso_frame_desc[j].length = pktsz;
481                 }
482
483                 urb = cam->sts_urb[i];
484                 urb->dev = dev;
485                 urb->context = uvd;
486                 urb->pipe = usb_rcvisocpipe(dev, uvd->video_endp-1);
487                 urb->interval = 1;
488                 urb->transfer_flags = URB_ISO_ASAP;
489                 urb->transfer_buffer = cam->sts_buf[i];
490                 urb->complete = konicawc_isoc_irq;
491                 urb->number_of_packets = FRAMES_PER_DESC;
492                 urb->transfer_buffer_length = FRAMES_PER_DESC;
493                 for (j=0; j < FRAMES_PER_DESC; j++) {
494                         urb->iso_frame_desc[j].offset = j;
495                         urb->iso_frame_desc[j].length = 1;
496                 }
497         }
498
499         cam->last_data_urb = NULL;
500
501         /* Submit all URBs */
502         for (i=0; i < USBVIDEO_NUMSBUF; i++) {
503                 errFlag = usb_submit_urb(cam->sts_urb[i], GFP_KERNEL);
504                 if (errFlag)
505                         err("usb_submit_isoc(%d) ret %d", i, errFlag);
506
507                 errFlag = usb_submit_urb(uvd->sbuf[i].urb, GFP_KERNEL);
508                 if (errFlag)
509                         err ("usb_submit_isoc(%d) ret %d", i, errFlag);
510         }
511
512         uvd->streaming = 1;
513         DEBUG(1, "streaming=1 video_endp=$%02x", uvd->video_endp);
514         return 0;
515 }
516
517
518 static void konicawc_stop_data(struct uvd *uvd)
519 {
520         int i, j;
521         struct konicawc *cam;
522
523         if ((uvd == NULL) || (!uvd->streaming) || (uvd->dev == NULL))
524                 return;
525
526         konicawc_camera_off(uvd);
527         uvd->streaming = 0;
528         cam = (struct konicawc *)uvd->user_data;
529         cam->last_data_urb = NULL;
530
531         /* Unschedule all of the iso td's */
532         for (i=0; i < USBVIDEO_NUMSBUF; i++) {
533                 usb_kill_urb(uvd->sbuf[i].urb);
534                 usb_kill_urb(cam->sts_urb[i]);
535         }
536
537         if (!uvd->remove_pending) {
538                 /* Set packet size to 0 */
539                 j = usb_set_interface(uvd->dev, uvd->iface, uvd->ifaceAltInactive);
540                 if (j < 0) {
541                         err("usb_set_interface() error %d.", j);
542                         uvd->last_error = j;
543                 }
544         }
545 }
546
547
548 static void konicawc_process_isoc(struct uvd *uvd, struct usbvideo_frame *frame)
549 {
550         struct konicawc *cam = (struct konicawc *)uvd->user_data;
551         int maxline = cam->maxline;
552         int yplanesz = cam->yplanesz;
553
554         assert(frame != NULL);
555
556         DEBUG(5, "maxline = %d yplanesz = %d", maxline, yplanesz);
557         DEBUG(3, "Frame state = %d", frame->scanstate);
558
559         if(frame->scanstate == ScanState_Scanning) {
560                 int drop = 0;
561                 int curframe;
562                 int fdrops = 0;
563                 DEBUG(3, "Searching for marker, queue len = %d", RingQueue_GetLength(&uvd->dp));
564                 while(RingQueue_GetLength(&uvd->dp) >= 4) {
565                         if ((RING_QUEUE_PEEK(&uvd->dp, 0) == 0x00) &&
566                             (RING_QUEUE_PEEK(&uvd->dp, 1) == 0xff) &&
567                             (RING_QUEUE_PEEK(&uvd->dp, 2) == 0x00) &&
568                             (RING_QUEUE_PEEK(&uvd->dp, 3) < 0x80)) {
569                                 curframe = RING_QUEUE_PEEK(&uvd->dp, 3);
570                                 if(cam->lastframe >= 0) {
571                                         fdrops = (0x80 + curframe - cam->lastframe) & 0x7F;
572                                         fdrops--;
573                                         if(fdrops) {
574                                                 dev_info(&uvd->dev->dev,
575                                                          "Dropped %d frames "
576                                                          "(%d -> %d)\n",
577                                                          fdrops,
578                                                          cam->lastframe,
579                                                          curframe);
580                                         }
581                                 }
582                                 cam->lastframe = curframe;
583                                 frame->curline = 0;
584                                 frame->scanstate = ScanState_Lines;
585                                 RING_QUEUE_DEQUEUE_BYTES(&uvd->dp, 4);
586                                 break;
587                         }
588                         RING_QUEUE_DEQUEUE_BYTES(&uvd->dp, 1);
589                         drop++;
590                 }
591                 if(drop)
592                         DEBUG(2, "dropped %d bytes looking for new frame", drop);
593         }
594
595         if(frame->scanstate == ScanState_Scanning)
596                 return;
597
598         /* Try to move data from queue into frame buffer
599          * We get data in blocks of 384 bytes made up of:
600          * 256 Y, 64 U, 64 V.
601          * This needs to be written out as a Y plane, a U plane and a V plane.
602          */
603
604         while ( frame->curline < maxline && (RingQueue_GetLength(&uvd->dp) >= 384)) {
605                 /* Y */
606                 RingQueue_Dequeue(&uvd->dp, frame->data + (frame->curline * 256), 256);
607                 /* U */
608                 RingQueue_Dequeue(&uvd->dp, frame->data + yplanesz + (frame->curline * 64), 64);
609                 /* V */
610                 RingQueue_Dequeue(&uvd->dp, frame->data + (5 * yplanesz)/4 + (frame->curline * 64), 64);
611                 frame->seqRead_Length += 384;
612                 frame->curline++;
613         }
614         /* See if we filled the frame */
615         if (frame->curline == maxline) {
616                 DEBUG(5, "got whole frame");
617
618                 frame->frameState = FrameState_Done_Hold;
619                 frame->curline = 0;
620                 uvd->curframe = -1;
621                 uvd->stats.frame_num++;
622         }
623 }
624
625
626 static int konicawc_find_fps(int size, int fps)
627 {
628         int i;
629
630         fps *= 3;
631         DEBUG(1, "konica_find_fps: size = %d fps = %d", size, fps);
632         if(fps <= spd_to_fps[size][0])
633                 return 0;
634
635         if(fps >= spd_to_fps[size][MAX_SPEED])
636                 return MAX_SPEED;
637
638         for(i = 0; i < MAX_SPEED; i++) {
639                 if((fps >= spd_to_fps[size][i]) && (fps <= spd_to_fps[size][i+1])) {
640                         DEBUG(2, "fps %d between %d and %d", fps, i, i+1);
641                         if( (fps - spd_to_fps[size][i]) < (spd_to_fps[size][i+1] - fps))
642                                 return i;
643                         else
644                                 return i+1;
645                 }
646         }
647         return MAX_SPEED+1;
648 }
649
650
651 static int konicawc_set_video_mode(struct uvd *uvd, struct video_window *vw)
652 {
653         struct konicawc *cam = (struct konicawc *)uvd->user_data;
654         int newspeed = cam->speed;
655         int newsize;
656         int x = vw->width;
657         int y = vw->height;
658         int fps = vw->flags;
659
660         if(x > 0 && y > 0) {
661                 DEBUG(2, "trying to find size %d,%d", x, y);
662                 for(newsize = 0; newsize <= MAX_FRAME_SIZE; newsize++) {
663                         if((camera_sizes[newsize].width == x) && (camera_sizes[newsize].height == y))
664                                 break;
665                 }
666         } else {
667                 newsize = cam->size;
668         }
669
670         if(newsize > MAX_FRAME_SIZE) {
671                 DEBUG(1, "couldn't find size %d,%d", x, y);
672                 return -EINVAL;
673         }
674
675         if(fps > 0) {
676                 DEBUG(1, "trying to set fps to %d", fps);
677                 newspeed = konicawc_find_fps(newsize, fps);
678                 DEBUG(1, "find_fps returned %d (%d)", newspeed, spd_to_fps[newsize][newspeed]);
679         }
680
681         if(newspeed > MAX_SPEED)
682                 return -EINVAL;
683
684         DEBUG(1, "setting size to %d speed to %d", newsize, newspeed);
685         if((newsize == cam->size) && (newspeed == cam->speed)) {
686                 DEBUG(1, "Nothing to do");
687                 return 0;
688         }
689         DEBUG(0, "setting to  %dx%d @ %d fps", camera_sizes[newsize].width,
690              camera_sizes[newsize].height, spd_to_fps[newsize][newspeed]/3);
691
692         konicawc_stop_data(uvd);
693         uvd->ifaceAltActive = spd_to_iface[newspeed];
694         DEBUG(1, "new interface = %d", uvd->ifaceAltActive);
695         cam->speed = newspeed;
696
697         if(cam->size != newsize) {
698                 cam->size = newsize;
699                 konicawc_set_camera_size(uvd);
700         }
701
702         /* Flush the input queue and clear any current frame in progress */
703
704         RingQueue_Flush(&uvd->dp);
705         cam->lastframe = -2;
706         if(uvd->curframe != -1) {
707                 uvd->frame[uvd->curframe].curline = 0;
708                 uvd->frame[uvd->curframe].seqRead_Length = 0;
709                 uvd->frame[uvd->curframe].seqRead_Index = 0;
710         }
711
712         konicawc_start_data(uvd);
713         return 0;
714 }
715
716
717 static int konicawc_calculate_fps(struct uvd *uvd)
718 {
719         struct konicawc *cam = uvd->user_data;
720         return spd_to_fps[cam->size][cam->speed]/3;
721 }
722
723
724 static void konicawc_configure_video(struct uvd *uvd)
725 {
726         struct konicawc *cam = (struct konicawc *)uvd->user_data;
727         u8 buf[2];
728
729         memset(&uvd->vpic, 0, sizeof(uvd->vpic));
730         memset(&uvd->vpic_old, 0x55, sizeof(uvd->vpic_old));
731
732         RESTRICT_TO_RANGE(brightness, 0, MAX_BRIGHTNESS);
733         RESTRICT_TO_RANGE(contrast, 0, MAX_CONTRAST);
734         RESTRICT_TO_RANGE(saturation, 0, MAX_SATURATION);
735         RESTRICT_TO_RANGE(sharpness, 0, MAX_SHARPNESS);
736         RESTRICT_TO_RANGE(whitebal, 0, MAX_WHITEBAL);
737
738         cam->brightness = brightness / 11;
739         cam->contrast = contrast / 11;
740         cam->saturation = saturation / 11;
741         cam->sharpness = sharpness / 11;
742         cam->white_bal = whitebal / 11;
743
744         uvd->vpic.colour = 108;
745         uvd->vpic.hue = 108;
746         uvd->vpic.brightness = brightness;
747         uvd->vpic.contrast = contrast;
748         uvd->vpic.whiteness = whitebal;
749         uvd->vpic.depth = 6;
750         uvd->vpic.palette = VIDEO_PALETTE_YUV420P;
751
752         memset(&uvd->vcap, 0, sizeof(uvd->vcap));
753         strcpy(uvd->vcap.name, "Konica Webcam");
754         uvd->vcap.type = VID_TYPE_CAPTURE;
755         uvd->vcap.channels = 1;
756         uvd->vcap.audios = 0;
757         uvd->vcap.minwidth = camera_sizes[SIZE_160X120].width;
758         uvd->vcap.minheight = camera_sizes[SIZE_160X120].height;
759         uvd->vcap.maxwidth = camera_sizes[SIZE_320X240].width;
760         uvd->vcap.maxheight = camera_sizes[SIZE_320X240].height;
761
762         memset(&uvd->vchan, 0, sizeof(uvd->vchan));
763         uvd->vchan.flags = 0 ;
764         uvd->vchan.tuners = 0;
765         uvd->vchan.channel = 0;
766         uvd->vchan.type = VIDEO_TYPE_CAMERA;
767         strcpy(uvd->vchan.name, "Camera");
768
769         /* Talk to device */
770         DEBUG(1, "device init");
771         if(!konicawc_get_misc(uvd, 0x3, 0, 0x10, buf, 2))
772                 DEBUG(2, "3,10 -> %2.2x %2.2x", buf[0], buf[1]);
773         if(!konicawc_get_misc(uvd, 0x3, 0, 0x10, buf, 2))
774                 DEBUG(2, "3,10 -> %2.2x %2.2x", buf[0], buf[1]);
775         if(konicawc_set_misc(uvd, 0x2, 0, 0xd))
776                 DEBUG(2, "2,0,d failed");
777         DEBUG(1, "setting initial values");
778 }
779
780 static int konicawc_probe(struct usb_interface *intf, const struct usb_device_id *devid)
781 {
782         struct usb_device *dev = interface_to_usbdev(intf);
783         struct uvd *uvd = NULL;
784         int ix, i, nas;
785         int actInterface=-1, inactInterface=-1, maxPS=0;
786         unsigned char video_ep = 0;
787
788         DEBUG(1, "konicawc_probe(%p)", intf);
789
790         /* We don't handle multi-config cameras */
791         if (dev->descriptor.bNumConfigurations != 1)
792                 return -ENODEV;
793
794         dev_info(&intf->dev, "Konica Webcam (rev. 0x%04x)\n",
795                  le16_to_cpu(dev->descriptor.bcdDevice));
796         RESTRICT_TO_RANGE(speed, 0, MAX_SPEED);
797
798         /* Validate found interface: must have one ISO endpoint */
799         nas = intf->num_altsetting;
800         if (nas != 8) {
801                 err("Incorrect number of alternate settings (%d) for this camera!", nas);
802                 return -ENODEV;
803         }
804         /* Validate all alternate settings */
805         for (ix=0; ix < nas; ix++) {
806                 const struct usb_host_interface *interface;
807                 const struct usb_endpoint_descriptor *endpoint;
808
809                 interface = &intf->altsetting[ix];
810                 i = interface->desc.bAlternateSetting;
811                 if (interface->desc.bNumEndpoints != 2) {
812                         err("Interface %d. has %u. endpoints!",
813                             interface->desc.bInterfaceNumber,
814                             (unsigned)(interface->desc.bNumEndpoints));
815                         return -ENODEV;
816                 }
817                 endpoint = &interface->endpoint[1].desc;
818                 DEBUG(1, "found endpoint: addr: 0x%2.2x maxps = 0x%4.4x",
819                     endpoint->bEndpointAddress, le16_to_cpu(endpoint->wMaxPacketSize));
820                 if (video_ep == 0)
821                         video_ep = endpoint->bEndpointAddress;
822                 else if (video_ep != endpoint->bEndpointAddress) {
823                         err("Alternate settings have different endpoint addresses!");
824                         return -ENODEV;
825                 }
826                 if (!usb_endpoint_xfer_isoc(endpoint)) {
827                         err("Interface %d. has non-ISO endpoint!",
828                             interface->desc.bInterfaceNumber);
829                         return -ENODEV;
830                 }
831                 if (usb_endpoint_dir_out(endpoint)) {
832                         err("Interface %d. has ISO OUT endpoint!",
833                             interface->desc.bInterfaceNumber);
834                         return -ENODEV;
835                 }
836                 if (le16_to_cpu(endpoint->wMaxPacketSize) == 0) {
837                         if (inactInterface < 0)
838                                 inactInterface = i;
839                         else {
840                                 err("More than one inactive alt. setting!");
841                                 return -ENODEV;
842                         }
843                 } else {
844                         if (i == spd_to_iface[speed]) {
845                                 /* This one is the requested one */
846                                 actInterface = i;
847                         }
848                 }
849                 if (le16_to_cpu(endpoint->wMaxPacketSize) > maxPS)
850                         maxPS = le16_to_cpu(endpoint->wMaxPacketSize);
851         }
852         if(actInterface == -1) {
853                 err("Cant find required endpoint");
854                 return -ENODEV;
855         }
856
857         DEBUG(1, "Selecting requested active setting=%d. maxPS=%d.", actInterface, maxPS);
858
859         uvd = usbvideo_AllocateDevice(cams);
860         if (uvd != NULL) {
861                 struct konicawc *cam = (struct konicawc *)(uvd->user_data);
862                 /* Here uvd is a fully allocated uvd object */
863                 for(i = 0; i < USBVIDEO_NUMSBUF; i++) {
864                         cam->sts_urb[i] = usb_alloc_urb(FRAMES_PER_DESC, GFP_KERNEL);
865                         if(cam->sts_urb[i] == NULL) {
866                                 while(i--) {
867                                         usb_free_urb(cam->sts_urb[i]);
868                                 }
869                                 err("can't allocate urbs");
870                                 return -ENOMEM;
871                         }
872                 }
873                 cam->speed = speed;
874                 RESTRICT_TO_RANGE(size, SIZE_160X120, SIZE_320X240);
875                 cam->width = camera_sizes[size].width;
876                 cam->height = camera_sizes[size].height;
877                 cam->size = size;
878
879                 uvd->flags = 0;
880                 uvd->debug = debug;
881                 uvd->dev = dev;
882                 uvd->iface = intf->altsetting->desc.bInterfaceNumber;
883                 uvd->ifaceAltInactive = inactInterface;
884                 uvd->ifaceAltActive = actInterface;
885                 uvd->video_endp = video_ep;
886                 uvd->iso_packet_len = maxPS;
887                 uvd->paletteBits = 1L << VIDEO_PALETTE_YUV420P;
888                 uvd->defaultPalette = VIDEO_PALETTE_YUV420P;
889                 uvd->canvas = VIDEOSIZE(320, 240);
890                 uvd->videosize = VIDEOSIZE(cam->width, cam->height);
891
892                 /* Initialize konicawc specific data */
893                 konicawc_configure_video(uvd);
894
895                 i = usbvideo_RegisterVideoDevice(uvd);
896                 uvd->max_frame_size = (320 * 240 * 3)/2;
897                 if (i != 0) {
898                         err("usbvideo_RegisterVideoDevice() failed.");
899                         uvd = NULL;
900                 }
901
902                 konicawc_register_input(cam, dev);
903         }
904
905         if (uvd) {
906                 usb_set_intfdata (intf, uvd);
907                 return 0;
908         }
909         return -EIO;
910 }
911
912
913 static void konicawc_free_uvd(struct uvd *uvd)
914 {
915         int i;
916         struct konicawc *cam = (struct konicawc *)uvd->user_data;
917
918         konicawc_unregister_input(cam);
919
920         for (i = 0; i < USBVIDEO_NUMSBUF; i++) {
921                 usb_free_urb(cam->sts_urb[i]);
922                 cam->sts_urb[i] = NULL;
923         }
924 }
925
926
927 static struct usb_device_id id_table[] = {
928         { USB_DEVICE(0x04c8, 0x0720) }, /* Intel YC 76 */
929         { }  /* Terminating entry */
930 };
931
932
933 static int __init konicawc_init(void)
934 {
935         struct usbvideo_cb cbTbl;
936         printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
937                DRIVER_DESC "\n");
938         memset(&cbTbl, 0, sizeof(cbTbl));
939         cbTbl.probe = konicawc_probe;
940         cbTbl.setupOnOpen = konicawc_setup_on_open;
941         cbTbl.processData = konicawc_process_isoc;
942         cbTbl.getFPS = konicawc_calculate_fps;
943         cbTbl.setVideoMode = konicawc_set_video_mode;
944         cbTbl.startDataPump = konicawc_start_data;
945         cbTbl.stopDataPump = konicawc_stop_data;
946         cbTbl.adjustPicture = konicawc_adjust_picture;
947         cbTbl.userFree = konicawc_free_uvd;
948         return usbvideo_register(
949                 &cams,
950                 MAX_CAMERAS,
951                 sizeof(struct konicawc),
952                 "konicawc",
953                 &cbTbl,
954                 THIS_MODULE,
955                 id_table);
956 }
957
958
959 static void __exit konicawc_cleanup(void)
960 {
961         usbvideo_Deregister(&cams);
962 }
963
964
965 MODULE_DEVICE_TABLE(usb, id_table);
966
967 MODULE_LICENSE("GPL");
968 MODULE_AUTHOR("Simon Evans <spse@secret.org.uk>");
969 MODULE_DESCRIPTION(DRIVER_DESC);
970 module_param(speed, int, 0);
971 MODULE_PARM_DESC(speed, "Initial speed: 0 (slowest) - 6 (fastest)");
972 module_param(size, int, 0);
973 MODULE_PARM_DESC(size, "Initial Size 0: 160x120 1: 160x136 2: 176x144 3: 320x240");
974 module_param(brightness, int, 0);
975 MODULE_PARM_DESC(brightness, "Initial brightness 0 - 108");
976 module_param(contrast, int, 0);
977 MODULE_PARM_DESC(contrast, "Initial contrast 0 - 108");
978 module_param(saturation, int, 0);
979 MODULE_PARM_DESC(saturation, "Initial saturation 0 - 108");
980 module_param(sharpness, int, 0);
981 MODULE_PARM_DESC(sharpness, "Initial brightness 0 - 108");
982 module_param(whitebal, int, 0);
983 MODULE_PARM_DESC(whitebal, "Initial white balance 0 - 363");
984
985 #ifdef CONFIG_USB_DEBUG
986 module_param(debug, int, S_IRUGO | S_IWUSR);
987 MODULE_PARM_DESC(debug, "Debug level: 0-9 (default=0)");
988 #endif
989
990 module_init(konicawc_init);
991 module_exit(konicawc_cleanup);