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V4L/DVB (11380): v4l2-subdev: change s_routing prototype
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / media / video / usbvision / usbvision-core.c
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781aa1d1 1/*
483dfdb6 2 * usbvision-core.c - driver for NT100x USB video capture devices
7ca659e3 3 *
781aa1d1
MCC		 4 *
5 * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
483dfdb6 6 * Dwaine Garden <dwainegarden@rogers.com>
781aa1d1
MCC		 7 *
8 * This module is part of usbvision driver project.
483dfdb6 9 * Updates to driver completed by Dwaine P. Garden
781aa1d1
MCC		 10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
781aa1d1
MCC		 24 */
25
26#include <linux/kernel.h>
781aa1d1
MCC		 27#include <linux/list.h>
28#include <linux/timer.h>
29#include <linux/slab.h>
30#include <linux/mm.h>
31#include <linux/utsname.h>
32#include <linux/highmem.h>
781aa1d1
MCC		 33#include <linux/vmalloc.h>
34#include <linux/module.h>
35#include <linux/init.h>
36#include <linux/spinlock.h>
781aa1d1
MCC		 37#include <asm/io.h>
38#include <linux/videodev2.h>
781aa1d1 39#include <linux/i2c.h>
781aa1d1 40
18d8a454
DG		 41#include <media/saa7115.h>
42#include <media/v4l2-common.h>
781aa1d1 43#include <media/tuner.h>
781aa1d1 44
a1ed551c 45#include <linux/workqueue.h>
781aa1d1 46
781aa1d1 47#include "usbvision.h"
781aa1d1 48
ff699e6b 49static unsigned int core_debug;
483dfdb6
TM		 50module_param(core_debug,int,0644);
51MODULE_PARM_DESC(core_debug,"enable debug messages [core]");
781aa1d1 52
ff699e6b 53static unsigned int force_testpattern;
483dfdb6
TM		 54module_param(force_testpattern,int,0644);
55MODULE_PARM_DESC(force_testpattern,"enable test pattern display [core]");
56
ff699e6b 57static int adjustCompression = 1; /* Set the compression to be adaptive */
483dfdb6
TM		 58module_param(adjustCompression, int, 0444);
59MODULE_PARM_DESC(adjustCompression, " Set the ADPCM compression for the device. Default: 1 (On)");
60
ff699e6b
DSL		 61/* To help people with Black and White output with using s-video input.
62 * Some cables and input device are wired differently. */
63static int SwitchSVideoInput;
483dfdb6
TM		 64module_param(SwitchSVideoInput, int, 0444);
65MODULE_PARM_DESC(SwitchSVideoInput, " Set the S-Video input. Some cables and input device are wired differently. Default: 0 (Off)");
781aa1d1 66
c6243d9c
TM		 67static unsigned int adjust_X_Offset = -1;
68module_param(adjust_X_Offset, int, 0644);
69MODULE_PARM_DESC(adjust_X_Offset, "adjust X offset display [core]");
70
71static unsigned int adjust_Y_Offset = -1;
72module_param(adjust_Y_Offset, int, 0644);
73MODULE_PARM_DESC(adjust_Y_Offset, "adjust Y offset display [core]");
74
75
483dfdb6 76#define ENABLE_HEXDUMP 0 /* Enable if you need it */
781aa1d1 77
781aa1d1
MCC		 78
79#ifdef USBVISION_DEBUG
df18c319
TM		 80 #define PDEBUG(level, fmt, args...) { \
81 if (core_debug & (level)) \
a482f327
GKH		 82 printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \
83 __func__, __LINE__ , ## args); \
df18c319 84 }
781aa1d1
MCC		 85#else
86 #define PDEBUG(level, fmt, args...) do {} while(0)
87#endif
88
483dfdb6
TM		 89#define DBG_HEADER 1<<0
90#define DBG_IRQ 1<<1
91#define DBG_ISOC 1<<2
92#define DBG_PARSE 1<<3
93#define DBG_SCRATCH 1<<4
c876a346 94#define DBG_FUNC 1<<5
781aa1d1
MCC		 95
96static const int max_imgwidth = MAX_FRAME_WIDTH;
97static const int max_imgheight = MAX_FRAME_HEIGHT;
98static const int min_imgwidth = MIN_FRAME_WIDTH;
99static const int min_imgheight = MIN_FRAME_HEIGHT;
100
483dfdb6 101/* The value of 'scratch_buf_size' affects quality of the picture
781aa1d1
MCC		 102 * in many ways. Shorter buffers may cause loss of data when client
103 * is too slow. Larger buffers are memory-consuming and take longer
104 * to work with. This setting can be adjusted, but the default value
105 * should be OK for most desktop users.
106 */
107#define DEFAULT_SCRATCH_BUF_SIZE (0x20000) // 128kB memory scratch buffer
108static const int scratch_buf_size = DEFAULT_SCRATCH_BUF_SIZE;
109
781aa1d1 110// Function prototypes
781aa1d1
MCC		 111static int usbvision_request_intra (struct usb_usbvision *usbvision);
112static int usbvision_unrequest_intra (struct usb_usbvision *usbvision);
113static int usbvision_adjust_compression (struct usb_usbvision *usbvision);
114static int usbvision_measure_bandwidth (struct usb_usbvision *usbvision);
781aa1d1
MCC		 115
116/*******************************/
117/* Memory management functions */
118/*******************************/
119
120/*
121 * Here we want the physical address of the memory.
122 * This is used when initializing the contents of the area.
123 */
124
0a0ceade 125static void *usbvision_rvmalloc(unsigned long size)
781aa1d1
MCC		 126{
127 void *mem;
128 unsigned long adr;
129
130 size = PAGE_ALIGN(size);
131 mem = vmalloc_32(size);
132 if (!mem)
133 return NULL;
134
135 memset(mem, 0, size); /* Clear the ram out, no junk to the user */
483dfdb6
TM		 136 adr = (unsigned long) mem;
137 while (size > 0) {
138 SetPageReserved(vmalloc_to_page((void *)adr));
139 adr += PAGE_SIZE;
140 size -= PAGE_SIZE;
141 }
142
143 return mem;
781aa1d1
MCC		 144}
145
4a06b538 146static void usbvision_rvfree(void *mem, unsigned long size)
781aa1d1 147{
483dfdb6
TM		 148 unsigned long adr;
149
150 if (!mem)
151 return;
781aa1d1 152
483dfdb6 153 size = PAGE_ALIGN(size);
781aa1d1 154
483dfdb6
TM		 155 adr = (unsigned long) mem;
156 while ((long) size > 0) {
157 ClearPageReserved(vmalloc_to_page((void *)adr));
158 adr += PAGE_SIZE;
159 size -= PAGE_SIZE;
160 }
781aa1d1 161
483dfdb6
TM		 162 vfree(mem);
163}
781aa1d1
MCC		 164
165
781aa1d1
MCC		 166#if ENABLE_HEXDUMP
167static void usbvision_hexdump(const unsigned char *data, int len)
168{
483dfdb6
TM		 169 char tmp[80];
170 int i, k;
171
172 for (i = k = 0; len > 0; i++, len--) {
173 if (i > 0 && (i % 16 == 0)) {
174 printk("%s\n", tmp);
175 k = 0;
176 }
177 k += sprintf(&tmp[k], "%02x ", data[i]);
178 }
179 if (k > 0)
180 printk("%s\n", tmp);
781aa1d1
MCC		 181}
182#endif
183
483dfdb6
TM		 184/********************************
185 * scratch ring buffer handling
186 ********************************/
0a0ceade 187static int scratch_len(struct usb_usbvision *usbvision) /*This returns the amount of data actually in the buffer */
781aa1d1
MCC		 188{
189 int len = usbvision->scratch_write_ptr - usbvision->scratch_read_ptr;
190 if (len < 0) {
191 len += scratch_buf_size;
192 }
193 PDEBUG(DBG_SCRATCH, "scratch_len() = %d\n", len);
194
195 return len;
196}
197
198
199/* This returns the free space left in the buffer */
0a0ceade 200static int scratch_free(struct usb_usbvision *usbvision)
781aa1d1
MCC		 201{
202 int free = usbvision->scratch_read_ptr - usbvision->scratch_write_ptr;
203 if (free <= 0) {
204 free += scratch_buf_size;
205 }
206 if (free) {
207 free -= 1; /* at least one byte in the buffer must */
208 /* left blank, otherwise there is no chance to differ between full and empty */
209 }
210 PDEBUG(DBG_SCRATCH, "return %d\n", free);
211
212 return free;
213}
214
215
781aa1d1 216/* This puts data into the buffer */
0a0ceade
AB		 217static int scratch_put(struct usb_usbvision *usbvision, unsigned char *data,
218 int len)
781aa1d1
MCC		 219{
220 int len_part;
221
222 if (usbvision->scratch_write_ptr + len < scratch_buf_size) {
223 memcpy(usbvision->scratch + usbvision->scratch_write_ptr, data, len);
224 usbvision->scratch_write_ptr += len;
225 }
226 else {
227 len_part = scratch_buf_size - usbvision->scratch_write_ptr;
228 memcpy(usbvision->scratch + usbvision->scratch_write_ptr, data, len_part);
229 if (len == len_part) {
230 usbvision->scratch_write_ptr = 0; /* just set write_ptr to zero */
231 }
232 else {
233 memcpy(usbvision->scratch, data + len_part, len - len_part);
234 usbvision->scratch_write_ptr = len - len_part;
235 }
236 }
237
238 PDEBUG(DBG_SCRATCH, "len=%d, new write_ptr=%d\n", len, usbvision->scratch_write_ptr);
239
240 return len;
241}
242
243/* This marks the write_ptr as position of new frame header */
0a0ceade 244static void scratch_mark_header(struct usb_usbvision *usbvision)
781aa1d1
MCC		 245{
246 PDEBUG(DBG_SCRATCH, "header at write_ptr=%d\n", usbvision->scratch_headermarker_write_ptr);
247
248 usbvision->scratch_headermarker[usbvision->scratch_headermarker_write_ptr] =
249 usbvision->scratch_write_ptr;
250 usbvision->scratch_headermarker_write_ptr += 1;
251 usbvision->scratch_headermarker_write_ptr %= USBVISION_NUM_HEADERMARKER;
252}
253
254/* This gets data from the buffer at the given "ptr" position */
0a0ceade
AB		 255static int scratch_get_extra(struct usb_usbvision *usbvision,
256 unsigned char *data, int *ptr, int len)
781aa1d1
MCC		 257{
258 int len_part;
259 if (*ptr + len < scratch_buf_size) {
260 memcpy(data, usbvision->scratch + *ptr, len);
261 *ptr += len;
262 }
263 else {
264 len_part = scratch_buf_size - *ptr;
265 memcpy(data, usbvision->scratch + *ptr, len_part);
266 if (len == len_part) {
267 *ptr = 0; /* just set the y_ptr to zero */
268 }
269 else {
270 memcpy(data + len_part, usbvision->scratch, len - len_part);
271 *ptr = len - len_part;
272 }
273 }
274
275 PDEBUG(DBG_SCRATCH, "len=%d, new ptr=%d\n", len, *ptr);
276
277 return len;
278}
279
280
281/* This sets the scratch extra read pointer */
0a0ceade
AB		 282static void scratch_set_extra_ptr(struct usb_usbvision *usbvision, int *ptr,
283 int len)
781aa1d1
MCC		 284{
285 *ptr = (usbvision->scratch_read_ptr + len)%scratch_buf_size;
286
287 PDEBUG(DBG_SCRATCH, "ptr=%d\n", *ptr);
288}
289
290
291/*This increments the scratch extra read pointer */
0a0ceade 292static void scratch_inc_extra_ptr(int *ptr, int len)
781aa1d1
MCC		 293{
294 *ptr = (*ptr + len) % scratch_buf_size;
295
296 PDEBUG(DBG_SCRATCH, "ptr=%d\n", *ptr);
297}
298
299
300/* This gets data from the buffer */
0a0ceade
AB		 301static int scratch_get(struct usb_usbvision *usbvision, unsigned char *data,
302 int len)
781aa1d1
MCC		 303{
304 int len_part;
305 if (usbvision->scratch_read_ptr + len < scratch_buf_size) {
306 memcpy(data, usbvision->scratch + usbvision->scratch_read_ptr, len);
307 usbvision->scratch_read_ptr += len;
308 }
309 else {
310 len_part = scratch_buf_size - usbvision->scratch_read_ptr;
311 memcpy(data, usbvision->scratch + usbvision->scratch_read_ptr, len_part);
312 if (len == len_part) {
313 usbvision->scratch_read_ptr = 0; /* just set the read_ptr to zero */
314 }
315 else {
316 memcpy(data + len_part, usbvision->scratch, len - len_part);
317 usbvision->scratch_read_ptr = len - len_part;
318 }
319 }
320
321 PDEBUG(DBG_SCRATCH, "len=%d, new read_ptr=%d\n", len, usbvision->scratch_read_ptr);
322
323 return len;
324}
325
326
327/* This sets read pointer to next header and returns it */
0a0ceade
AB		 328static int scratch_get_header(struct usb_usbvision *usbvision,
329 struct usbvision_frame_header *header)
781aa1d1
MCC		 330{
331 int errCode = 0;
332
333 PDEBUG(DBG_SCRATCH, "from read_ptr=%d", usbvision->scratch_headermarker_read_ptr);
334
335 while (usbvision->scratch_headermarker_write_ptr -
336 usbvision->scratch_headermarker_read_ptr != 0) {
337 usbvision->scratch_read_ptr =
338 usbvision->scratch_headermarker[usbvision->scratch_headermarker_read_ptr];
339 usbvision->scratch_headermarker_read_ptr += 1;
340 usbvision->scratch_headermarker_read_ptr %= USBVISION_NUM_HEADERMARKER;
341 scratch_get(usbvision, (unsigned char *)header, USBVISION_HEADER_LENGTH);
342 if ((header->magic_1 == USBVISION_MAGIC_1)
343 && (header->magic_2 == USBVISION_MAGIC_2)
344 && (header->headerLength == USBVISION_HEADER_LENGTH)) {
345 errCode = USBVISION_HEADER_LENGTH;
346 header->frameWidth = header->frameWidthLo + (header->frameWidthHi << 8);
347 header->frameHeight = header->frameHeightLo + (header->frameHeightHi << 8);
348 break;
349 }
350 }
351
352 return errCode;
353}
354
355
356/*This removes len bytes of old data from the buffer */
0a0ceade 357static void scratch_rm_old(struct usb_usbvision *usbvision, int len)
781aa1d1
MCC		 358{
359
360 usbvision->scratch_read_ptr += len;
361 usbvision->scratch_read_ptr %= scratch_buf_size;
362 PDEBUG(DBG_SCRATCH, "read_ptr is now %d\n", usbvision->scratch_read_ptr);
363}
364
365
366/*This resets the buffer - kills all data in it too */
0a0ceade 367static void scratch_reset(struct usb_usbvision *usbvision)
781aa1d1
MCC		 368{
369 PDEBUG(DBG_SCRATCH, "\n");
370
371 usbvision->scratch_read_ptr = 0;
372 usbvision->scratch_write_ptr = 0;
373 usbvision->scratch_headermarker_read_ptr = 0;
374 usbvision->scratch_headermarker_write_ptr = 0;
375 usbvision->isocstate = IsocState_NoFrame;
376}
377
483dfdb6 378int usbvision_scratch_alloc(struct usb_usbvision *usbvision)
781aa1d1 379{
38284ba3 380 usbvision->scratch = vmalloc_32(scratch_buf_size);
483dfdb6
TM		 381 scratch_reset(usbvision);
382 if(usbvision->scratch == NULL) {
be9ed511
MCC		 383 dev_err(&usbvision->dev->dev,
384 "%s: unable to allocate %d bytes for scratch\n",
385 __func__, scratch_buf_size);
483dfdb6 386 return -ENOMEM;
781aa1d1 387 }
483dfdb6 388 return 0;
781aa1d1
MCC		 389}
390
483dfdb6 391void usbvision_scratch_free(struct usb_usbvision *usbvision)
781aa1d1 392{
483dfdb6
TM		 393 if (usbvision->scratch != NULL) {
394 vfree(usbvision->scratch);
395 usbvision->scratch = NULL;
781aa1d1
MCC		 396 }
397}
398
781aa1d1
MCC		 399/*
400 * usbvision_testpattern()
401 *
402 * Procedure forms a test pattern (yellow grid on blue background).
403 *
404 * Parameters:
405 * fullframe: if TRUE then entire frame is filled, otherwise the procedure
18d8a454 406 * continues from the current scanline.
781aa1d1 407 * pmode 0: fill the frame with solid blue color (like on VCR or TV)
18d8a454 408 * 1: Draw a colored grid
781aa1d1
MCC		 409 *
410 */
0a0ceade
AB		 411static void usbvision_testpattern(struct usb_usbvision *usbvision,
412 int fullframe, int pmode)
781aa1d1
MCC		 413{
414 static const char proc[] = "usbvision_testpattern";
415 struct usbvision_frame *frame;
416 unsigned char *f;
417 int num_cell = 0;
418 int scan_length = 0;
ff699e6b 419 static int num_pass;
781aa1d1
MCC		 420
421 if (usbvision == NULL) {
422 printk(KERN_ERR "%s: usbvision == NULL\n", proc);
423 return;
424 }
f2242ee5
TM		 425 if (usbvision->curFrame == NULL) {
426 printk(KERN_ERR "%s: usbvision->curFrame is NULL.\n", proc);
781aa1d1
MCC		 427 return;
428 }
429
430 /* Grab the current frame */
f2242ee5 431 frame = usbvision->curFrame;
781aa1d1
MCC		 432
433 /* Optionally start at the beginning */
434 if (fullframe) {
435 frame->curline = 0;
436 frame->scanlength = 0;
437 }
438
439 /* Form every scan line */
440 for (; frame->curline < frame->frmheight; frame->curline++) {
441 int i;
442
443 f = frame->data + (usbvision->curwidth * 3 * frame->curline);
444 for (i = 0; i < usbvision->curwidth; i++) {
445 unsigned char cb = 0x80;
446 unsigned char cg = 0;
447 unsigned char cr = 0;
448
449 if (pmode == 1) {
450 if (frame->curline % 32 == 0)
451 cb = 0, cg = cr = 0xFF;
452 else if (i % 32 == 0) {
453 if (frame->curline % 32 == 1)
454 num_cell++;
455 cb = 0, cg = cr = 0xFF;
456 } else {
457 cb =
458 ((num_cell * 7) +
459 num_pass) & 0xFF;
460 cg =
461 ((num_cell * 5) +
462 num_pass * 2) & 0xFF;
463 cr =
464 ((num_cell * 3) +
465 num_pass * 3) & 0xFF;
466 }
467 } else {
468 /* Just the blue screen */
469 }
470
471 *f++ = cb;
472 *f++ = cg;
473 *f++ = cr;
474 scan_length += 3;
475 }
476 }
477
478 frame->grabstate = FrameState_Done;
479 frame->scanlength += scan_length;
480 ++num_pass;
481
781aa1d1
MCC		 482}
483
484/*
483dfdb6
TM		 485 * usbvision_decompress_alloc()
486 *
487 * allocates intermediate buffer for decompression
781aa1d1 488 */
483dfdb6
TM		 489int usbvision_decompress_alloc(struct usb_usbvision *usbvision)
490{
491 int IFB_size = MAX_FRAME_WIDTH * MAX_FRAME_HEIGHT * 3 / 2;
38284ba3 492 usbvision->IntraFrameBuffer = vmalloc_32(IFB_size);
483dfdb6 493 if (usbvision->IntraFrameBuffer == NULL) {
be9ed511
MCC		 494 dev_err(&usbvision->dev->dev,
495 "%s: unable to allocate %d for compr. frame buffer\n",
496 __func__, IFB_size);
483dfdb6
TM		 497 return -ENOMEM;
498 }
499 return 0;
500}
501
502/*
503 * usbvision_decompress_free()
504 *
505 * frees intermediate buffer for decompression
506 */
507void usbvision_decompress_free(struct usb_usbvision *usbvision)
508{
509 if (usbvision->IntraFrameBuffer != NULL) {
510 vfree(usbvision->IntraFrameBuffer);
511 usbvision->IntraFrameBuffer = NULL;
512 }
513}
514
515/************************************************************
516 * Here comes the data parsing stuff that is run as interrupt
517 ************************************************************/
781aa1d1
MCC		 518/*
519 * usbvision_find_header()
520 *
521 * Locate one of supported header markers in the scratch buffer.
522 */
523static enum ParseState usbvision_find_header(struct usb_usbvision *usbvision)
524{
525 struct usbvision_frame *frame;
526 int foundHeader = 0;
527
483dfdb6 528 frame = usbvision->curFrame;
781aa1d1
MCC		 529
530 while (scratch_get_header(usbvision, &frame->isocHeader) == USBVISION_HEADER_LENGTH) {
531 // found header in scratch
532 PDEBUG(DBG_HEADER, "found header: 0x%02x%02x %d %d %d %d %#x 0x%02x %u %u",
533 frame->isocHeader.magic_2,
534 frame->isocHeader.magic_1,
535 frame->isocHeader.headerLength,
536 frame->isocHeader.frameNum,
537 frame->isocHeader.framePhase,
538 frame->isocHeader.frameLatency,
539 frame->isocHeader.dataFormat,
540 frame->isocHeader.formatParam,
541 frame->isocHeader.frameWidth,
542 frame->isocHeader.frameHeight);
543
544 if (usbvision->requestIntra) {
545 if (frame->isocHeader.formatParam & 0x80) {
546 foundHeader = 1;
547 usbvision->lastIsocFrameNum = -1; // do not check for lost frames this time
548 usbvision_unrequest_intra(usbvision);
549 break;
550 }
551 }
552 else {
553 foundHeader = 1;
554 break;
555 }
556 }
557
558 if (foundHeader) {
559 frame->frmwidth = frame->isocHeader.frameWidth * usbvision->stretch_width;
560 frame->frmheight = frame->isocHeader.frameHeight * usbvision->stretch_height;
561 frame->v4l2_linesize = (frame->frmwidth * frame->v4l2_format.depth)>> 3;
781aa1d1
MCC		 562 }
563 else { // no header found
564 PDEBUG(DBG_HEADER, "skipping scratch data, no header");
565 scratch_reset(usbvision);
566 return ParseState_EndParse;
567 }
568
569 // found header
570 if (frame->isocHeader.dataFormat==ISOC_MODE_COMPRESS) {
571 //check isocHeader.frameNum for lost frames
572 if (usbvision->lastIsocFrameNum >= 0) {
573 if (((usbvision->lastIsocFrameNum + 1) % 32) != frame->isocHeader.frameNum) {
574 // unexpected frame drop: need to request new intra frame
575 PDEBUG(DBG_HEADER, "Lost frame before %d on USB", frame->isocHeader.frameNum);
576 usbvision_request_intra(usbvision);
577 return ParseState_NextFrame;
578 }
579 }
580 usbvision->lastIsocFrameNum = frame->isocHeader.frameNum;
581 }
582 usbvision->header_count++;
583 frame->scanstate = ScanState_Lines;
584 frame->curline = 0;
585
483dfdb6 586 if (force_testpattern) {
781aa1d1
MCC		 587 usbvision_testpattern(usbvision, 1, 1);
588 return ParseState_NextFrame;
589 }
590 return ParseState_Continue;
591}
592
593static enum ParseState usbvision_parse_lines_422(struct usb_usbvision *usbvision,
594 long *pcopylen)
595{
596 volatile struct usbvision_frame *frame;
597 unsigned char *f;
598 int len;
599 int i;
600 unsigned char yuyv[4]={180, 128, 10, 128}; // YUV components
601 unsigned char rv, gv, bv; // RGB components
602 int clipmask_index, bytes_per_pixel;
781aa1d1
MCC		 603 int stretch_bytes, clipmask_add;
604
483dfdb6
TM		 605 frame = usbvision->curFrame;
606 f = frame->data + (frame->v4l2_linesize * frame->curline);
781aa1d1
MCC		 607
608 /* Make sure there's enough data for the entire line */
609 len = (frame->isocHeader.frameWidth * 2)+5;
610 if (scratch_len(usbvision) < len) {
611 PDEBUG(DBG_PARSE, "out of data in line %d, need %u.\n", frame->curline, len);
612 return ParseState_Out;
613 }
614
615 if ((frame->curline + 1) >= frame->frmheight) {
616 return ParseState_NextFrame;
617 }
618
619 bytes_per_pixel = frame->v4l2_format.bytes_per_pixel;
620 stretch_bytes = (usbvision->stretch_width - 1) * bytes_per_pixel;
621 clipmask_index = frame->curline * MAX_FRAME_WIDTH;
622 clipmask_add = usbvision->stretch_width;
623
624 for (i = 0; i < frame->frmwidth; i+=(2 * usbvision->stretch_width)) {
625
626 scratch_get(usbvision, &yuyv[0], 4);
627
483dfdb6 628 if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
781aa1d1
MCC		 629 *f++ = yuyv[0]; // Y
630 *f++ = yuyv[3]; // U
631 }
632 else {
633
634 YUV_TO_RGB_BY_THE_BOOK(yuyv[0], yuyv[1], yuyv[3], rv, gv, bv);
635 switch (frame->v4l2_format.format) {
6200bbaa
TM		 636 case V4L2_PIX_FMT_RGB565:
637 *f++ = (0x1F & rv) |
638 (0xE0 & (gv << 5));
639 *f++ = (0x07 & (gv >> 3)) |
640 (0xF8 & bv);
641 break;
642 case V4L2_PIX_FMT_RGB24:
643 *f++ = rv;
644 *f++ = gv;
645 *f++ = bv;
646 break;
647 case V4L2_PIX_FMT_RGB32:
648 *f++ = rv;
649 *f++ = gv;
650 *f++ = bv;
651 f++;
652 break;
653 case V4L2_PIX_FMT_RGB555:
654 *f++ = (0x1F & rv) |
655 (0xE0 & (gv << 5));
656 *f++ = (0x03 & (gv >> 3)) |
657 (0x7C & (bv << 2));
658 break;
781aa1d1
MCC		 659 }
660 }
661 clipmask_index += clipmask_add;
662 f += stretch_bytes;
663
483dfdb6 664 if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
781aa1d1
MCC		 665 *f++ = yuyv[2]; // Y
666 *f++ = yuyv[1]; // V
667 }
668 else {
669
670 YUV_TO_RGB_BY_THE_BOOK(yuyv[2], yuyv[1], yuyv[3], rv, gv, bv);
671 switch (frame->v4l2_format.format) {
6200bbaa
TM		 672 case V4L2_PIX_FMT_RGB565:
673 *f++ = (0x1F & rv) |
674 (0xE0 & (gv << 5));
675 *f++ = (0x07 & (gv >> 3)) |
676 (0xF8 & bv);
677 break;
678 case V4L2_PIX_FMT_RGB24:
679 *f++ = rv;
680 *f++ = gv;
681 *f++ = bv;
682 break;
683 case V4L2_PIX_FMT_RGB32:
684 *f++ = rv;
685 *f++ = gv;
686 *f++ = bv;
687 f++;
688 break;
689 case V4L2_PIX_FMT_RGB555:
690 *f++ = (0x1F & rv) |
691 (0xE0 & (gv << 5));
692 *f++ = (0x03 & (gv >> 3)) |
693 (0x7C & (bv << 2));
694 break;
781aa1d1
MCC		 695 }
696 }
697 clipmask_index += clipmask_add;
698 f += stretch_bytes;
699 }
700
701 frame->curline += usbvision->stretch_height;
702 *pcopylen += frame->v4l2_linesize * usbvision->stretch_height;
703
704 if (frame->curline >= frame->frmheight) {
705 return ParseState_NextFrame;
706 }
707 else {
708 return ParseState_Continue;
709 }
710}
711
483dfdb6 712/* The decompression routine */
781aa1d1
MCC		 713static int usbvision_decompress(struct usb_usbvision *usbvision,unsigned char *Compressed,
714 unsigned char *Decompressed, int *StartPos,
715 int *BlockTypeStartPos, int Len)
716{
717 int RestPixel, Idx, MaxPos, Pos, ExtraPos, BlockLen, BlockTypePos, BlockTypeLen;
718 unsigned char BlockByte, BlockCode, BlockType, BlockTypeByte, Integrator;
719
720 Integrator = 0;
721 Pos = *StartPos;
722 BlockTypePos = *BlockTypeStartPos;
723 MaxPos = 396; //Pos + Len;
724 ExtraPos = Pos;
725 BlockLen = 0;
726 BlockByte = 0;
727 BlockCode = 0;
728 BlockType = 0;
729 BlockTypeByte = 0;
730 BlockTypeLen = 0;
731 RestPixel = Len;
732
733 for (Idx = 0; Idx < Len; Idx++) {
734
735 if (BlockLen == 0) {
736 if (BlockTypeLen==0) {
737 BlockTypeByte = Compressed[BlockTypePos];
738 BlockTypePos++;
739 BlockTypeLen = 4;
740 }
741 BlockType = (BlockTypeByte & 0xC0) >> 6;
742
743 //statistic:
744 usbvision->ComprBlockTypes[BlockType]++;
745
746 Pos = ExtraPos;
747 if (BlockType == 0) {
748 if(RestPixel >= 24) {
749 Idx += 23;
750 RestPixel -= 24;
751 Integrator = Decompressed[Idx];
752 } else {
753 Idx += RestPixel - 1;
754 RestPixel = 0;
755 }
756 } else {
757 BlockCode = Compressed[Pos];
758 Pos++;
759 if (RestPixel >= 24) {
760 BlockLen = 24;
761 } else {
762 BlockLen = RestPixel;
763 }
764 RestPixel -= BlockLen;
765 ExtraPos = Pos + (BlockLen / 4);
766 }
767 BlockTypeByte <<= 2;
768 BlockTypeLen -= 1;
769 }
770 if (BlockLen > 0) {
771 if ((BlockLen%4) == 0) {
772 BlockByte = Compressed[Pos];
773 Pos++;
774 }
775 if (BlockType == 1) { //inter Block
776 Integrator = Decompressed[Idx];
777 }
778 switch (BlockByte & 0xC0) {
779 case 0x03<<6:
780 Integrator += Compressed[ExtraPos];
781 ExtraPos++;
782 break;
783 case 0x02<<6:
784 Integrator += BlockCode;
785 break;
786 case 0x00:
787 Integrator -= BlockCode;
788 break;
789 }
790 Decompressed[Idx] = Integrator;
791 BlockByte <<= 2;
792 BlockLen -= 1;
793 }
794 }
795 *StartPos = ExtraPos;
796 *BlockTypeStartPos = BlockTypePos;
797 return Idx;
798}
799
800
801/*
802 * usbvision_parse_compress()
803 *
804 * Parse compressed frame from the scratch buffer, put
805 * decoded RGB value into the current frame buffer and add the written
806 * number of bytes (RGB) to the *pcopylen.
807 *
808 */
809static enum ParseState usbvision_parse_compress(struct usb_usbvision *usbvision,
810 long *pcopylen)
811{
812#define USBVISION_STRIP_MAGIC 0x5A
813#define USBVISION_STRIP_LEN_MAX 400
814#define USBVISION_STRIP_HEADER_LEN 3
815
816 struct usbvision_frame *frame;
817 unsigned char *f,*u = NULL ,*v = NULL;
818 unsigned char StripData[USBVISION_STRIP_LEN_MAX];
819 unsigned char StripHeader[USBVISION_STRIP_HEADER_LEN];
820 int Idx, IdxEnd, StripLen, StripPtr, StartBlockPos, BlockPos, BlockTypePos;
821 int clipmask_index, bytes_per_pixel, rc;
781aa1d1
MCC		 822 int imageSize;
823 unsigned char rv, gv, bv;
824 static unsigned char *Y, *U, *V;
825
483dfdb6
TM		 826 frame = usbvision->curFrame;
827 imageSize = frame->frmwidth * frame->frmheight;
828 if ( (frame->v4l2_format.format == V4L2_PIX_FMT_YUV422P) ||
829 (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420) ) { // this is a planar format
830 //... v4l2_linesize not used here.
831 f = frame->data + (frame->width * frame->curline);
832 } else
833 f = frame->data + (frame->v4l2_linesize * frame->curline);
834
835 if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV){ //initialise u and v pointers
836 // get base of u and b planes add halfoffset
837
838 u = frame->data
839 + imageSize
840 + (frame->frmwidth >>1) * frame->curline ;
841 v = u + (imageSize >>1 );
842
843 } else if (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420){
844
845 v = frame->data + imageSize + ((frame->curline* (frame->width))>>2) ;
846 u = v + (imageSize >>2) ;
781aa1d1
MCC		 847 }
848
849 if (frame->curline == 0) {
850 usbvision_adjust_compression(usbvision);
851 }
852
853 if (scratch_len(usbvision) < USBVISION_STRIP_HEADER_LEN) {
854 return ParseState_Out;
855 }
856
857 //get strip header without changing the scratch_read_ptr
858 scratch_set_extra_ptr(usbvision, &StripPtr, 0);
859 scratch_get_extra(usbvision, &StripHeader[0], &StripPtr,
860 USBVISION_STRIP_HEADER_LEN);
861
862 if (StripHeader[0] != USBVISION_STRIP_MAGIC) {
863 // wrong strip magic
864 usbvision->stripMagicErrors++;
865 return ParseState_NextFrame;
866 }
867
868 if (frame->curline != (int)StripHeader[2]) {
869 //line number missmatch error
870 usbvision->stripLineNumberErrors++;
871 }
872
873 StripLen = 2 * (unsigned int)StripHeader[1];
874 if (StripLen > USBVISION_STRIP_LEN_MAX) {
875 // strip overrun
876 // I think this never happens
877 usbvision_request_intra(usbvision);
878 }
879
880 if (scratch_len(usbvision) < StripLen) {
881 //there is not enough data for the strip
882 return ParseState_Out;
883 }
884
885 if (usbvision->IntraFrameBuffer) {
886 Y = usbvision->IntraFrameBuffer + frame->frmwidth * frame->curline;
887 U = usbvision->IntraFrameBuffer + imageSize + (frame->frmwidth / 2) * (frame->curline / 2);
888 V = usbvision->IntraFrameBuffer + imageSize / 4 * 5 + (frame->frmwidth / 2) * (frame->curline / 2);
889 }
890 else {
891 return ParseState_NextFrame;
892 }
893
18d8a454 894 bytes_per_pixel = frame->v4l2_format.bytes_per_pixel;
781aa1d1
MCC		 895 clipmask_index = frame->curline * MAX_FRAME_WIDTH;
896
897 scratch_get(usbvision, StripData, StripLen);
898
899 IdxEnd = frame->frmwidth;
900 BlockTypePos = USBVISION_STRIP_HEADER_LEN;
901 StartBlockPos = BlockTypePos + (IdxEnd - 1) / 96 + (IdxEnd / 2 - 1) / 96 + 2;
902 BlockPos = StartBlockPos;
903
904 usbvision->BlockPos = BlockPos;
905
906 if ((rc = usbvision_decompress(usbvision, StripData, Y, &BlockPos, &BlockTypePos, IdxEnd)) != IdxEnd) {
907 //return ParseState_Continue;
908 }
909 if (StripLen > usbvision->maxStripLen) {
910 usbvision->maxStripLen = StripLen;
911 }
912
913 if (frame->curline%2) {
914 if ((rc = usbvision_decompress(usbvision, StripData, V, &BlockPos, &BlockTypePos, IdxEnd/2)) != IdxEnd/2) {
915 //return ParseState_Continue;
916 }
917 }
918 else {
919 if ((rc = usbvision_decompress(usbvision, StripData, U, &BlockPos, &BlockTypePos, IdxEnd/2)) != IdxEnd/2) {
920 //return ParseState_Continue;
921 }
922 }
923
924 if (BlockPos > usbvision->comprBlockPos) {
925 usbvision->comprBlockPos = BlockPos;
926 }
927 if (BlockPos > StripLen) {
928 usbvision->stripLenErrors++;
929 }
18d8a454 930
781aa1d1 931 for (Idx = 0; Idx < IdxEnd; Idx++) {
483dfdb6 932 if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
781aa1d1
MCC		 933 *f++ = Y[Idx];
934 *f++ = Idx & 0x01 ? U[Idx/2] : V[Idx/2];
935 }
936 else if(frame->v4l2_format.format == V4L2_PIX_FMT_YUV422P) {
937 *f++ = Y[Idx];
938 if ( Idx & 0x01)
939 *u++ = U[Idx>>1] ;
940 else
941 *v++ = V[Idx>>1];
942 }
943 else if (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420) {
944 *f++ = Y [Idx];
18d8a454
DG		 945 if ( !(( Idx & 0x01 ) | ( frame->curline & 0x01 )) ){
946
781aa1d1
MCC		 947/* only need do this for 1 in 4 pixels */
948/* intraframe buffer is YUV420 format */
949
950 *u++ = U[Idx >>1];
951 *v++ = V[Idx >>1];
952 }
18d8a454 953
781aa1d1
MCC		 954 }
955 else {
956 YUV_TO_RGB_BY_THE_BOOK(Y[Idx], U[Idx/2], V[Idx/2], rv, gv, bv);
957 switch (frame->v4l2_format.format) {
958 case V4L2_PIX_FMT_GREY:
959 *f++ = Y[Idx];
960 break;
961 case V4L2_PIX_FMT_RGB555:
6200bbaa
TM		 962 *f++ = (0x1F & rv) |
963 (0xE0 & (gv << 5));
964 *f++ = (0x03 & (gv >> 3)) |
965 (0x7C & (bv << 2));
781aa1d1
MCC		 966 break;
967 case V4L2_PIX_FMT_RGB565:
6200bbaa
TM		 968 *f++ = (0x1F & rv) |
969 (0xE0 & (gv << 5));
970 *f++ = (0x07 & (gv >> 3)) |
971 (0xF8 & bv);
781aa1d1
MCC		 972 break;
973 case V4L2_PIX_FMT_RGB24:
781aa1d1 974 *f++ = rv;
6200bbaa
TM		 975 *f++ = gv;
976 *f++ = bv;
781aa1d1
MCC		 977 break;
978 case V4L2_PIX_FMT_RGB32:
781aa1d1 979 *f++ = rv;
6200bbaa
TM		 980 *f++ = gv;
981 *f++ = bv;
781aa1d1
MCC		 982 f++;
983 break;
984 }
985 }
986 clipmask_index++;
987 }
18d8a454
DG		 988 /* Deal with non-integer no. of bytes for YUV420P */
989 if (frame->v4l2_format.format != V4L2_PIX_FMT_YVU420 )
990 *pcopylen += frame->v4l2_linesize;
991 else
992 *pcopylen += frame->curline & 0x01 ? frame->v4l2_linesize : frame->v4l2_linesize << 1;
993
781aa1d1
MCC		 994 frame->curline += 1;
995
996 if (frame->curline >= frame->frmheight) {
997 return ParseState_NextFrame;
998 }
999 else {
1000 return ParseState_Continue;
1001 }
1002
1003}
1004
1005
1006/*
1007 * usbvision_parse_lines_420()
1008 *
1009 * Parse two lines from the scratch buffer, put
1010 * decoded RGB value into the current frame buffer and add the written
1011 * number of bytes (RGB) to the *pcopylen.
1012 *
1013 */
1014static enum ParseState usbvision_parse_lines_420(struct usb_usbvision *usbvision,
1015 long *pcopylen)
1016{
1017 struct usbvision_frame *frame;
1018 unsigned char *f_even = NULL, *f_odd = NULL;
1019 unsigned int pixel_per_line, block;
1020 int pixel, block_split;
1021 int y_ptr, u_ptr, v_ptr, y_odd_offset;
1022 const int y_block_size = 128;
1023 const int uv_block_size = 64;
1024 const int sub_block_size = 32;
1025 const int y_step[] = { 0, 0, 0, 2 }, y_step_size = 4;
1026 const int uv_step[]= { 0, 0, 0, 4 }, uv_step_size = 4;
1027 unsigned char y[2], u, v; /* YUV components */
1028 int y_, u_, v_, vb, uvg, ur;
1029 int r_, g_, b_; /* RGB components */
1030 unsigned char g;
1031 int clipmask_even_index, clipmask_odd_index, bytes_per_pixel;
1032 int clipmask_add, stretch_bytes;
781aa1d1 1033
483dfdb6
TM		 1034 frame = usbvision->curFrame;
1035 f_even = frame->data + (frame->v4l2_linesize * frame->curline);
1036 f_odd = f_even + frame->v4l2_linesize * usbvision->stretch_height;
781aa1d1
MCC		 1037
1038 /* Make sure there's enough data for the entire line */
1039 /* In this mode usbvision transfer 3 bytes for every 2 pixels */
1040 /* I need two lines to decode the color */
18d8a454 1041 bytes_per_pixel = frame->v4l2_format.bytes_per_pixel;
781aa1d1
MCC		 1042 stretch_bytes = (usbvision->stretch_width - 1) * bytes_per_pixel;
1043 clipmask_even_index = frame->curline * MAX_FRAME_WIDTH;
1044 clipmask_odd_index = clipmask_even_index + MAX_FRAME_WIDTH;
1045 clipmask_add = usbvision->stretch_width;
1046 pixel_per_line = frame->isocHeader.frameWidth;
1047
1048 if (scratch_len(usbvision) < (int)pixel_per_line * 3) {
1049 //printk(KERN_DEBUG "out of data, need %d\n", len);
1050 return ParseState_Out;
1051 }
1052
1053 if ((frame->curline + 1) >= frame->frmheight) {
1054 return ParseState_NextFrame;
1055 }
1056
1057 block_split = (pixel_per_line%y_block_size) ? 1 : 0; //are some blocks splitted into different lines?
1058
1059 y_odd_offset = (pixel_per_line / y_block_size) * (y_block_size + uv_block_size)
1060 + block_split * uv_block_size;
1061
1062 scratch_set_extra_ptr(usbvision, &y_ptr, y_odd_offset);
1063 scratch_set_extra_ptr(usbvision, &u_ptr, y_block_size);
1064 scratch_set_extra_ptr(usbvision, &v_ptr, y_odd_offset
1065 + (4 - block_split) * sub_block_size);
1066
1067 for (block = 0; block < (pixel_per_line / sub_block_size);
1068 block++) {
1069
1070
1071 for (pixel = 0; pixel < sub_block_size; pixel +=2) {
1072 scratch_get(usbvision, &y[0], 2);
1073 scratch_get_extra(usbvision, &u, &u_ptr, 1);
1074 scratch_get_extra(usbvision, &v, &v_ptr, 1);
1075
1076 //I don't use the YUV_TO_RGB macro for better performance
1077 v_ = v - 128;
1078 u_ = u - 128;
1079 vb = 132252 * v_;
1080 uvg= -53281 * u_ - 25625 * v_;
1081 ur = 104595 * u_;
1082
483dfdb6 1083 if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
781aa1d1
MCC		 1084 *f_even++ = y[0];
1085 *f_even++ = v;
1086 }
1087 else {
1088 y_ = 76284 * (y[0] - 16);
1089
1090 b_ = (y_ + vb) >> 16;
1091 g_ = (y_ + uvg)>> 16;
1092 r_ = (y_ + ur) >> 16;
1093
1094 switch (frame->v4l2_format.format) {
6200bbaa
TM		 1095 case V4L2_PIX_FMT_RGB565:
1096 g = LIMIT_RGB(g_);
1097 *f_even++ =
1098 (0x1F & LIMIT_RGB(r_)) |
1099 (0xE0 & (g << 5));
1100 *f_even++ =
1101 (0x07 & (g >> 3)) |
1102 (0xF8 & LIMIT_RGB(b_));
1103 break;
1104 case V4L2_PIX_FMT_RGB24:
1105 *f_even++ = LIMIT_RGB(r_);
1106 *f_even++ = LIMIT_RGB(g_);
1107 *f_even++ = LIMIT_RGB(b_);
1108 break;
1109 case V4L2_PIX_FMT_RGB32:
1110 *f_even++ = LIMIT_RGB(r_);
1111 *f_even++ = LIMIT_RGB(g_);
1112 *f_even++ = LIMIT_RGB(b_);
1113 f_even++;
1114 break;
1115 case V4L2_PIX_FMT_RGB555:
1116 g = LIMIT_RGB(g_);
1117 *f_even++ = (0x1F & LIMIT_RGB(r_)) |
1118 (0xE0 & (g << 5));
1119 *f_even++ = (0x03 & (g >> 3)) |
1120 (0x7C & (LIMIT_RGB(b_) << 2));
1121 break;
781aa1d1
MCC		 1122 }
1123 }
1124 clipmask_even_index += clipmask_add;
1125 f_even += stretch_bytes;
1126
483dfdb6 1127 if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
781aa1d1
MCC		 1128 *f_even++ = y[1];
1129 *f_even++ = u;
1130 }
1131 else {
1132 y_ = 76284 * (y[1] - 16);
1133
1134 b_ = (y_ + vb) >> 16;
1135 g_ = (y_ + uvg)>> 16;
1136 r_ = (y_ + ur) >> 16;
1137
1138 switch (frame->v4l2_format.format) {
6200bbaa
TM		 1139 case V4L2_PIX_FMT_RGB565:
1140 g = LIMIT_RGB(g_);
1141 *f_even++ =
1142 (0x1F & LIMIT_RGB(r_)) |
1143 (0xE0 & (g << 5));
1144 *f_even++ =
1145 (0x07 & (g >> 3)) |
1146 (0xF8 & LIMIT_RGB(b_));
1147 break;
1148 case V4L2_PIX_FMT_RGB24:
1149 *f_even++ = LIMIT_RGB(r_);
1150 *f_even++ = LIMIT_RGB(g_);
1151 *f_even++ = LIMIT_RGB(b_);
1152 break;
1153 case V4L2_PIX_FMT_RGB32:
1154 *f_even++ = LIMIT_RGB(r_);
1155 *f_even++ = LIMIT_RGB(g_);
1156 *f_even++ = LIMIT_RGB(b_);
1157 f_even++;
1158 break;
1159 case V4L2_PIX_FMT_RGB555:
1160 g = LIMIT_RGB(g_);
1161 *f_even++ = (0x1F & LIMIT_RGB(r_)) |
1162 (0xE0 & (g << 5));
1163 *f_even++ = (0x03 & (g >> 3)) |
1164 (0x7C & (LIMIT_RGB(b_) << 2));
1165 break;
781aa1d1
MCC		 1166 }
1167 }
1168 clipmask_even_index += clipmask_add;
1169 f_even += stretch_bytes;
1170
1171 scratch_get_extra(usbvision, &y[0], &y_ptr, 2);
1172
483dfdb6 1173 if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
781aa1d1
MCC		 1174 *f_odd++ = y[0];
1175 *f_odd++ = v;
1176 }
1177 else {
1178 y_ = 76284 * (y[0] - 16);
1179
1180 b_ = (y_ + vb) >> 16;
1181 g_ = (y_ + uvg)>> 16;
1182 r_ = (y_ + ur) >> 16;
1183
1184 switch (frame->v4l2_format.format) {
6200bbaa
TM		 1185 case V4L2_PIX_FMT_RGB565:
1186 g = LIMIT_RGB(g_);
1187 *f_odd++ =
1188 (0x1F & LIMIT_RGB(r_)) |
1189 (0xE0 & (g << 5));
1190 *f_odd++ =
1191 (0x07 & (g >> 3)) |
1192 (0xF8 & LIMIT_RGB(b_));
1193 break;
1194 case V4L2_PIX_FMT_RGB24:
1195 *f_odd++ = LIMIT_RGB(r_);
1196 *f_odd++ = LIMIT_RGB(g_);
1197 *f_odd++ = LIMIT_RGB(b_);
1198 break;
1199 case V4L2_PIX_FMT_RGB32:
1200 *f_odd++ = LIMIT_RGB(r_);
1201 *f_odd++ = LIMIT_RGB(g_);
1202 *f_odd++ = LIMIT_RGB(b_);
1203 f_odd++;
1204 break;
1205 case V4L2_PIX_FMT_RGB555:
1206 g = LIMIT_RGB(g_);
1207 *f_odd++ = (0x1F & LIMIT_RGB(r_)) |
1208 (0xE0 & (g << 5));
1209 *f_odd++ = (0x03 & (g >> 3)) |
1210 (0x7C & (LIMIT_RGB(b_) << 2));
1211 break;
781aa1d1
MCC		 1212 }
1213 }
1214 clipmask_odd_index += clipmask_add;
1215 f_odd += stretch_bytes;
1216
483dfdb6 1217 if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
781aa1d1
MCC		 1218 *f_odd++ = y[1];
1219 *f_odd++ = u;
1220 }
1221 else {
1222 y_ = 76284 * (y[1] - 16);
1223
1224 b_ = (y_ + vb) >> 16;
1225 g_ = (y_ + uvg)>> 16;
1226 r_ = (y_ + ur) >> 16;
1227
1228 switch (frame->v4l2_format.format) {
6200bbaa
TM		 1229 case V4L2_PIX_FMT_RGB565:
1230 g = LIMIT_RGB(g_);
1231 *f_odd++ =
1232 (0x1F & LIMIT_RGB(r_)) |
1233 (0xE0 & (g << 5));
1234 *f_odd++ =
1235 (0x07 & (g >> 3)) |
1236 (0xF8 & LIMIT_RGB(b_));
1237 break;
1238 case V4L2_PIX_FMT_RGB24:
1239 *f_odd++ = LIMIT_RGB(r_);
1240 *f_odd++ = LIMIT_RGB(g_);
1241 *f_odd++ = LIMIT_RGB(b_);
1242 break;
1243 case V4L2_PIX_FMT_RGB32:
1244 *f_odd++ = LIMIT_RGB(r_);
1245 *f_odd++ = LIMIT_RGB(g_);
1246 *f_odd++ = LIMIT_RGB(b_);
1247 f_odd++;
1248 break;
1249 case V4L2_PIX_FMT_RGB555:
1250 g = LIMIT_RGB(g_);
1251 *f_odd++ = (0x1F & LIMIT_RGB(r_)) |
1252 (0xE0 & (g << 5));
1253 *f_odd++ = (0x03 & (g >> 3)) |
1254 (0x7C & (LIMIT_RGB(b_) << 2));
1255 break;
781aa1d1
MCC		 1256 }
1257 }
1258 clipmask_odd_index += clipmask_add;
1259 f_odd += stretch_bytes;
1260 }
1261
1262 scratch_rm_old(usbvision,y_step[block % y_step_size] * sub_block_size);
1263 scratch_inc_extra_ptr(&y_ptr, y_step[(block + 2 * block_split) % y_step_size]
1264 * sub_block_size);
1265 scratch_inc_extra_ptr(&u_ptr, uv_step[block % uv_step_size]
1266 * sub_block_size);
1267 scratch_inc_extra_ptr(&v_ptr, uv_step[(block + 2 * block_split) % uv_step_size]
1268 * sub_block_size);
1269 }
1270
1271 scratch_rm_old(usbvision, pixel_per_line * 3 / 2
1272 + block_split * sub_block_size);
1273
1274 frame->curline += 2 * usbvision->stretch_height;
1275 *pcopylen += frame->v4l2_linesize * 2 * usbvision->stretch_height;
1276
1277 if (frame->curline >= frame->frmheight)
1278 return ParseState_NextFrame;
1279 else
1280 return ParseState_Continue;
1281}
1282
1283/*
1284 * usbvision_parse_data()
1285 *
1286 * Generic routine to parse the scratch buffer. It employs either
1287 * usbvision_find_header() or usbvision_parse_lines() to do most
1288 * of work.
1289 *
1290 */
1291static void usbvision_parse_data(struct usb_usbvision *usbvision)
1292{
1293 struct usbvision_frame *frame;
1294 enum ParseState newstate;
1295 long copylen = 0;
f2242ee5 1296 unsigned long lock_flags;
781aa1d1 1297
483dfdb6 1298 frame = usbvision->curFrame;
781aa1d1
MCC		 1299
1300 PDEBUG(DBG_PARSE, "parsing len=%d\n", scratch_len(usbvision));
1301
781aa1d1
MCC		 1302 while (1) {
1303
1304 newstate = ParseState_Out;
1305 if (scratch_len(usbvision)) {
1306 if (frame->scanstate == ScanState_Scanning) {
1307 newstate = usbvision_find_header(usbvision);
1308 }
1309 else if (frame->scanstate == ScanState_Lines) {
1310 if (usbvision->isocMode == ISOC_MODE_YUV420) {
1311 newstate = usbvision_parse_lines_420(usbvision, &copylen);
1312 }
1313 else if (usbvision->isocMode == ISOC_MODE_YUV422) {
1314 newstate = usbvision_parse_lines_422(usbvision, &copylen);
1315 }
1316 else if (usbvision->isocMode == ISOC_MODE_COMPRESS) {
1317 newstate = usbvision_parse_compress(usbvision, &copylen);
1318 }
1319
1320 }
1321 }
1322 if (newstate == ParseState_Continue) {
1323 continue;
1324 }
1325 else if ((newstate == ParseState_NextFrame) || (newstate == ParseState_Out)) {
1326 break;
1327 }
1328 else {
1329 return; /* ParseState_EndParse */
1330 }
1331 }
1332
1333 if (newstate == ParseState_NextFrame) {
1334 frame->grabstate = FrameState_Done;
1335 do_gettimeofday(&(frame->timestamp));
1336 frame->sequence = usbvision->frame_num;
781aa1d1 1337
483dfdb6
TM		 1338 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1339 list_move_tail(&(frame->frame), &usbvision->outqueue);
1340 usbvision->curFrame = NULL;
1341 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1342
1343 usbvision->frame_num++;
781aa1d1
MCC		 1344
1345 /* This will cause the process to request another frame. */
f2242ee5
TM		 1346 if (waitqueue_active(&usbvision->wait_frame)) {
1347 PDEBUG(DBG_PARSE, "Wake up !");
1348 wake_up_interruptible(&usbvision->wait_frame);
781aa1d1
MCC		 1349 }
1350 }
f2242ee5
TM		 1351 else
1352 frame->grabstate = FrameState_Grabbing;
1353
781aa1d1
MCC		 1354
1355 /* Update the frame's uncompressed length. */
1356 frame->scanlength += copylen;
1357}
1358
1359
1360/*
1361 * Make all of the blocks of data contiguous
1362 */
1363static int usbvision_compress_isochronous(struct usb_usbvision *usbvision,
f2242ee5 1364 struct urb *urb)
781aa1d1
MCC		 1365{
1366 unsigned char *packet_data;
1367 int i, totlen = 0;
1368
1369 for (i = 0; i < urb->number_of_packets; i++) {
1370 int packet_len = urb->iso_frame_desc[i].actual_length;
1371 int packet_stat = urb->iso_frame_desc[i].status;
1372
1373 packet_data = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
1374
1375 /* Detect and ignore errored packets */
1376 if (packet_stat) { // packet_stat != 0 ?????????????
1377 PDEBUG(DBG_ISOC, "data error: [%d] len=%d, status=%X", i, packet_len, packet_stat);
1378 usbvision->isocErrCount++;
1379 continue;
1380 }
1381
1382 /* Detect and ignore empty packets */
1383 if (packet_len < 0) {
1384 PDEBUG(DBG_ISOC, "error packet [%d]", i);
1385 usbvision->isocSkipCount++;
1386 continue;
1387 }
1388 else if (packet_len == 0) { /* Frame end ????? */
1389 PDEBUG(DBG_ISOC, "null packet [%d]", i);
1390 usbvision->isocstate=IsocState_NoFrame;
1391 usbvision->isocSkipCount++;
1392 continue;
1393 }
1394 else if (packet_len > usbvision->isocPacketSize) {
1395 PDEBUG(DBG_ISOC, "packet[%d] > isocPacketSize", i);
1396 usbvision->isocSkipCount++;
1397 continue;
1398 }
1399
1400 PDEBUG(DBG_ISOC, "packet ok [%d] len=%d", i, packet_len);
1401
1402 if (usbvision->isocstate==IsocState_NoFrame) { //new frame begins
1403 usbvision->isocstate=IsocState_InFrame;
1404 scratch_mark_header(usbvision);
1405 usbvision_measure_bandwidth(usbvision);
1406 PDEBUG(DBG_ISOC, "packet with header");
1407 }
1408
1409 /*
1410 * If usbvision continues to feed us with data but there is no
1411 * consumption (if, for example, V4L client fell asleep) we
1412 * may overflow the buffer. We have to move old data over to
1413 * free room for new data. This is bad for old data. If we
1414 * just drop new data then it's bad for new data... choose
1415 * your favorite evil here.
1416 */
1417 if (scratch_free(usbvision) < packet_len) {
1418
1419 usbvision->scratch_ovf_count++;
1420 PDEBUG(DBG_ISOC, "scratch buf overflow! scr_len: %d, n: %d",
1421 scratch_len(usbvision), packet_len);
1422 scratch_rm_old(usbvision, packet_len - scratch_free(usbvision));
1423 }
1424
1425 /* Now we know that there is enough room in scratch buffer */
1426 scratch_put(usbvision, packet_data, packet_len);
1427 totlen += packet_len;
1428 usbvision->isocDataCount += packet_len;
1429 usbvision->isocPacketCount++;
1430 }
1431#if ENABLE_HEXDUMP
1432 if (totlen > 0) {
ff699e6b 1433 static int foo;
781aa1d1
MCC		 1434 if (foo < 1) {
1435 printk(KERN_DEBUG "+%d.\n", usbvision->scratchlen);
1436 usbvision_hexdump(data0, (totlen > 64) ? 64 : totlen);
1437 ++foo;
1438 }
1439 }
1440#endif
1441 return totlen;
1442}
1443
a1ed551c 1444static void usbvision_isocIrq(struct urb *urb)
781aa1d1 1445{
f2242ee5
TM		 1446 int errCode = 0;
1447 int len;
1448 struct usb_usbvision *usbvision = urb->context;
1449 int i;
1450 unsigned long startTime = jiffies;
1451 struct usbvision_frame **f;
781aa1d1 1452
f2242ee5
TM		 1453 /* We don't want to do anything if we are about to be removed! */
1454 if (!USBVISION_IS_OPERATIONAL(usbvision))
1455 return;
781aa1d1 1456
fe818d1d
TM		 1457 /* any urb with wrong status is ignored without acknowledgement */
1458 if (urb->status == -ENOENT) {
1459 return;
1460 }
1461
f2242ee5 1462 f = &usbvision->curFrame;
781aa1d1 1463
f2242ee5
TM		 1464 /* Manage streaming interruption */
1465 if (usbvision->streaming == Stream_Interrupt) {
5f7fb877 1466 usbvision->streaming = Stream_Idle;
f2242ee5
TM		 1467 if ((*f)) {
1468 (*f)->grabstate = FrameState_Ready;
1469 (*f)->scanstate = ScanState_Scanning;
1470 }
1471 PDEBUG(DBG_IRQ, "stream interrupted");
1472 wake_up_interruptible(&usbvision->wait_stream);
1473 }
781aa1d1 1474
f2242ee5
TM		 1475 /* Copy the data received into our scratch buffer */
1476 len = usbvision_compress_isochronous(usbvision, urb);
781aa1d1 1477
f2242ee5
TM		 1478 usbvision->isocUrbCount++;
1479 usbvision->urb_length = len;
781aa1d1 1480
f2242ee5
TM		 1481 if (usbvision->streaming == Stream_On) {
1482
1483 /* If we collected enough data let's parse! */
fe818d1d
TM		 1484 if ((scratch_len(usbvision) > USBVISION_HEADER_LENGTH) &&
1485 (!list_empty(&(usbvision->inqueue))) ) {
1486 if (!(*f)) {
1487 (*f) = list_entry(usbvision->inqueue.next,
1488 struct usbvision_frame,
1489 frame);
f2242ee5 1490 }
fe818d1d
TM		 1491 usbvision_parse_data(usbvision);
1492 }
1493 else {
1494 /*If we don't have a frame
1495 we're current working on, complain */
1496 PDEBUG(DBG_IRQ,
1497 "received data, but no one needs it");
1498 scratch_reset(usbvision);
781aa1d1
MCC		 1499 }
1500 }
40bad678
TM		 1501 else {
1502 PDEBUG(DBG_IRQ, "received data, but no one needs it");
1503 scratch_reset(usbvision);
1504 }
f2242ee5 1505
781aa1d1 1506 usbvision->timeInIrq += jiffies - startTime;
f2242ee5
TM		 1507
1508 for (i = 0; i < USBVISION_URB_FRAMES; i++) {
1509 urb->iso_frame_desc[i].status = 0;
1510 urb->iso_frame_desc[i].actual_length = 0;
1511 }
1512
1513 urb->status = 0;
1514 urb->dev = usbvision->dev;
1515 errCode = usb_submit_urb (urb, GFP_ATOMIC);
1516
fe818d1d 1517 if(errCode) {
be9ed511
MCC		 1518 dev_err(&usbvision->dev->dev,
1519 "%s: usb_submit_urb failed: error %d\n",
1520 __func__, errCode);
fe818d1d 1521 }
f2242ee5 1522
781aa1d1
MCC		 1523 return;
1524}
1525
1526/*************************************/
1527/* Low level usbvision access functions */
1528/*************************************/
1529
1530/*
1531 * usbvision_read_reg()
1532 *
1533 * return < 0 -> Error
1534 * >= 0 -> Data
1535 */
1536
483dfdb6 1537int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg)
781aa1d1
MCC		 1538{
1539 int errCode = 0;
1540 unsigned char buffer[1];
1541
1542 if (!USBVISION_IS_OPERATIONAL(usbvision))
1543 return -1;
1544
1545 errCode = usb_control_msg(usbvision->dev, usb_rcvctrlpipe(usbvision->dev, 1),
1546 USBVISION_OP_CODE,
1547 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT,
1548 0, (__u16) reg, buffer, 1, HZ);
1549
1550 if (errCode < 0) {
be9ed511
MCC		 1551 dev_err(&usbvision->dev->dev,
1552 "%s: failed: error %d\n", __func__, errCode);
781aa1d1
MCC		 1553 return errCode;
1554 }
1555 return buffer[0];
1556}
1557
1558/*
1559 * usbvision_write_reg()
1560 *
1561 * return 1 -> Reg written
1562 * 0 -> usbvision is not yet ready
1563 * -1 -> Something went wrong
1564 */
1565
483dfdb6 1566int usbvision_write_reg(struct usb_usbvision *usbvision, unsigned char reg,
781aa1d1
MCC		 1567 unsigned char value)
1568{
1569 int errCode = 0;
1570
1571 if (!USBVISION_IS_OPERATIONAL(usbvision))
1572 return 0;
1573
1574 errCode = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
1575 USBVISION_OP_CODE,
1576 USB_DIR_OUT | USB_TYPE_VENDOR |
1577 USB_RECIP_ENDPOINT, 0, (__u16) reg, &value, 1, HZ);
1578
1579 if (errCode < 0) {
be9ed511
MCC		 1580 dev_err(&usbvision->dev->dev,
1581 "%s: failed: error %d\n", __func__, errCode);
781aa1d1
MCC		 1582 }
1583 return errCode;
1584}
1585
1586
a1ed551c 1587static void usbvision_ctrlUrb_complete(struct urb *urb)
781aa1d1
MCC		 1588{
1589 struct usb_usbvision *usbvision = (struct usb_usbvision *)urb->context;
1590
1591 PDEBUG(DBG_IRQ, "");
1592 usbvision->ctrlUrbBusy = 0;
1593 if (waitqueue_active(&usbvision->ctrlUrb_wq)) {
1594 wake_up_interruptible(&usbvision->ctrlUrb_wq);
1595 }
1596}
1597
1598
1599static int usbvision_write_reg_irq(struct usb_usbvision *usbvision,int address,
1600 unsigned char *data, int len)
1601{
1602 int errCode = 0;
1603
1604 PDEBUG(DBG_IRQ, "");
1605 if (len > 8) {
1606 return -EFAULT;
1607 }
781aa1d1 1608 if (usbvision->ctrlUrbBusy) {
781aa1d1
MCC		 1609 return -EBUSY;
1610 }
1611 usbvision->ctrlUrbBusy = 1;
781aa1d1
MCC		 1612
1613 usbvision->ctrlUrbSetup.bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT;
1614 usbvision->ctrlUrbSetup.bRequest = USBVISION_OP_CODE;
1615 usbvision->ctrlUrbSetup.wValue = 0;
1616 usbvision->ctrlUrbSetup.wIndex = cpu_to_le16(address);
1617 usbvision->ctrlUrbSetup.wLength = cpu_to_le16(len);
1618 usb_fill_control_urb (usbvision->ctrlUrb, usbvision->dev,
1619 usb_sndctrlpipe(usbvision->dev, 1),
1620 (unsigned char *)&usbvision->ctrlUrbSetup,
1621 (void *)usbvision->ctrlUrbBuffer, len,
1622 usbvision_ctrlUrb_complete,
1623 (void *)usbvision);
1624
1625 memcpy(usbvision->ctrlUrbBuffer, data, len);
1626
1627 errCode = usb_submit_urb(usbvision->ctrlUrb, GFP_ATOMIC);
1628 if (errCode < 0) {
1629 // error in usb_submit_urb()
1630 usbvision->ctrlUrbBusy = 0;
1631 }
1632 PDEBUG(DBG_IRQ, "submit %d byte: error %d", len, errCode);
1633 return errCode;
1634}
1635
1636
781aa1d1
MCC		 1637static int usbvision_init_compression(struct usb_usbvision *usbvision)
1638{
1639 int errCode = 0;
1640
1641 usbvision->lastIsocFrameNum = -1;
1642 usbvision->isocDataCount = 0;
1643 usbvision->isocPacketCount = 0;
1644 usbvision->isocSkipCount = 0;
1645 usbvision->comprLevel = 50;
1646 usbvision->lastComprLevel = -1;
1647 usbvision->isocUrbCount = 0;
1648 usbvision->requestIntra = 1;
1649 usbvision->isocMeasureBandwidthCount = 0;
1650
1651 return errCode;
1652}
1653
1654/* this function measures the used bandwidth since last call
1655 * return: 0 : no error
1656 * sets usedBandwidth to 1-100 : 1-100% of full bandwidth resp. to isocPacketSize
1657 */
1658static int usbvision_measure_bandwidth (struct usb_usbvision *usbvision)
1659{
1660 int errCode = 0;
1661
1662 if (usbvision->isocMeasureBandwidthCount < 2) { // this gives an average bandwidth of 3 frames
1663 usbvision->isocMeasureBandwidthCount++;
1664 return errCode;
1665 }
1666 if ((usbvision->isocPacketSize > 0) && (usbvision->isocPacketCount > 0)) {
1667 usbvision->usedBandwidth = usbvision->isocDataCount /
1668 (usbvision->isocPacketCount + usbvision->isocSkipCount) *
1669 100 / usbvision->isocPacketSize;
1670 }
1671 usbvision->isocMeasureBandwidthCount = 0;
1672 usbvision->isocDataCount = 0;
1673 usbvision->isocPacketCount = 0;
1674 usbvision->isocSkipCount = 0;
1675 return errCode;
1676}
1677
1678static int usbvision_adjust_compression (struct usb_usbvision *usbvision)
1679{
1680 int errCode = 0;
1681 unsigned char buffer[6];
1682
1683 PDEBUG(DBG_IRQ, "");
1684 if ((adjustCompression) && (usbvision->usedBandwidth > 0)) {
1685 usbvision->comprLevel += (usbvision->usedBandwidth - 90) / 2;
1686 RESTRICT_TO_RANGE(usbvision->comprLevel, 0, 100);
1687 if (usbvision->comprLevel != usbvision->lastComprLevel) {
1688 int distorsion;
1689 if (usbvision->bridgeType == BRIDGE_NT1004 || usbvision->bridgeType == BRIDGE_NT1005) {
1690 buffer[0] = (unsigned char)(4 + 16 * usbvision->comprLevel / 100); // PCM Threshold 1
1691 buffer[1] = (unsigned char)(4 + 8 * usbvision->comprLevel / 100); // PCM Threshold 2
1692 distorsion = 7 + 248 * usbvision->comprLevel / 100;
1693 buffer[2] = (unsigned char)(distorsion & 0xFF); // Average distorsion Threshold (inter)
1694 buffer[3] = (unsigned char)(distorsion & 0xFF); // Average distorsion Threshold (intra)
1695 distorsion = 1 + 42 * usbvision->comprLevel / 100;
1696 buffer[4] = (unsigned char)(distorsion & 0xFF); // Maximum distorsion Threshold (inter)
1697 buffer[5] = (unsigned char)(distorsion & 0xFF); // Maximum distorsion Threshold (intra)
1698 }
1699 else { //BRIDGE_NT1003
1700 buffer[0] = (unsigned char)(4 + 16 * usbvision->comprLevel / 100); // PCM threshold 1
1701 buffer[1] = (unsigned char)(4 + 8 * usbvision->comprLevel / 100); // PCM threshold 2
1702 distorsion = 2 + 253 * usbvision->comprLevel / 100;
1703 buffer[2] = (unsigned char)(distorsion & 0xFF); // distorsion threshold bit0-7
1704 buffer[3] = 0; //(unsigned char)((distorsion >> 8) & 0x0F); // distorsion threshold bit 8-11
1705 distorsion = 0 + 43 * usbvision->comprLevel / 100;
1706 buffer[4] = (unsigned char)(distorsion & 0xFF); // maximum distorsion bit0-7
1707 buffer[5] = 0; //(unsigned char)((distorsion >> 8) & 0x01); // maximum distorsion bit 8
1708 }
1709 errCode = usbvision_write_reg_irq(usbvision, USBVISION_PCM_THR1, buffer, 6);
1710 if (errCode == 0){
1711 PDEBUG(DBG_IRQ, "new compr params %#02x %#02x %#02x %#02x %#02x %#02x", buffer[0],
1712 buffer[1], buffer[2], buffer[3], buffer[4], buffer[5]);
1713 usbvision->lastComprLevel = usbvision->comprLevel;
1714 }
1715 }
1716 }
1717 return errCode;
1718}
1719
1720static int usbvision_request_intra (struct usb_usbvision *usbvision)
1721{
1722 int errCode = 0;
1723 unsigned char buffer[1];
1724
1725 PDEBUG(DBG_IRQ, "");
1726 usbvision->requestIntra = 1;
1727 buffer[0] = 1;
1728 usbvision_write_reg_irq(usbvision, USBVISION_FORCE_INTRA, buffer, 1);
1729 return errCode;
1730}
1731
1732static int usbvision_unrequest_intra (struct usb_usbvision *usbvision)
1733{
1734 int errCode = 0;
1735 unsigned char buffer[1];
1736
1737 PDEBUG(DBG_IRQ, "");
1738 usbvision->requestIntra = 0;
1739 buffer[0] = 0;
1740 usbvision_write_reg_irq(usbvision, USBVISION_FORCE_INTRA, buffer, 1);
1741 return errCode;
1742}
1743
483dfdb6
TM		 1744/*******************************
1745 * usbvision utility functions
1746 *******************************/
781aa1d1 1747
483dfdb6 1748int usbvision_power_off(struct usb_usbvision *usbvision)
781aa1d1
MCC		 1749{
1750 int errCode = 0;
1751
1752 PDEBUG(DBG_FUNC, "");
1753
1754 errCode = usbvision_write_reg(usbvision, USBVISION_PWR_REG, USBVISION_SSPND_EN);
1755 if (errCode == 1) {
1756 usbvision->power = 0;
1757 }
1758 PDEBUG(DBG_FUNC, "%s: errCode %d", (errCode!=1)?"ERROR":"power is off", errCode);
1759 return errCode;
1760}
1761
781aa1d1
MCC		 1762/*
1763 * usbvision_set_video_format()
1764 *
1765 */
1766static int usbvision_set_video_format(struct usb_usbvision *usbvision, int format)
1767{
1768 static const char proc[] = "usbvision_set_video_format";
1769 int rc;
1770 unsigned char value[2];
1771
1772 if (!USBVISION_IS_OPERATIONAL(usbvision))
1773 return 0;
1774
1775 PDEBUG(DBG_FUNC, "isocMode %#02x", format);
1776
1777 if ((format != ISOC_MODE_YUV422)
1778 && (format != ISOC_MODE_YUV420)
1779 && (format != ISOC_MODE_COMPRESS)) {
1780 printk(KERN_ERR "usbvision: unknown video format %02x, using default YUV420",
1781 format);
1782 format = ISOC_MODE_YUV420;
1783 }
1784 value[0] = 0x0A; //TODO: See the effect of the filter
8c7189d1 1785 value[1] = format; // Sets the VO_MODE register which follows FILT_CONT
781aa1d1
MCC		 1786 rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
1787 USBVISION_OP_CODE,
1788 USB_DIR_OUT | USB_TYPE_VENDOR |
1789 USB_RECIP_ENDPOINT, 0,
1790 (__u16) USBVISION_FILT_CONT, value, 2, HZ);
1791
1792 if (rc < 0) {
1793 printk(KERN_ERR "%s: ERROR=%d. USBVISION stopped - "
1794 "reconnect or reload driver.\n", proc, rc);
1795 }
1796 usbvision->isocMode = format;
1797 return rc;
1798}
1799
1800/*
1801 * usbvision_set_output()
1802 *
1803 */
1804
483dfdb6
TM		 1805int usbvision_set_output(struct usb_usbvision *usbvision, int width,
1806 int height)
781aa1d1
MCC		 1807{
1808 int errCode = 0;
1809 int UsbWidth, UsbHeight;
1810 unsigned int frameRate=0, frameDrop=0;
1811 unsigned char value[4];
1812
1813 if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1814 return 0;
1815 }
1816
1817 if (width > MAX_USB_WIDTH) {
1818 UsbWidth = width / 2;
1819 usbvision->stretch_width = 2;
1820 }
1821 else {
1822 UsbWidth = width;
1823 usbvision->stretch_width = 1;
1824 }
1825
1826 if (height > MAX_USB_HEIGHT) {
1827 UsbHeight = height / 2;
1828 usbvision->stretch_height = 2;
1829 }
1830 else {
1831 UsbHeight = height;
1832 usbvision->stretch_height = 1;
1833 }
1834
1835 RESTRICT_TO_RANGE(UsbWidth, MIN_FRAME_WIDTH, MAX_USB_WIDTH);
1836 UsbWidth &= ~(MIN_FRAME_WIDTH-1);
1837 RESTRICT_TO_RANGE(UsbHeight, MIN_FRAME_HEIGHT, MAX_USB_HEIGHT);
1838 UsbHeight &= ~(1);
1839
1840 PDEBUG(DBG_FUNC, "usb %dx%d; screen %dx%d; stretch %dx%d",
1841 UsbWidth, UsbHeight, width, height,
1842 usbvision->stretch_width, usbvision->stretch_height);
1843
1844 /* I'll not rewrite the same values */
1845 if ((UsbWidth != usbvision->curwidth) || (UsbHeight != usbvision->curheight)) {
1846 value[0] = UsbWidth & 0xff; //LSB
1847 value[1] = (UsbWidth >> 8) & 0x03; //MSB
1848 value[2] = UsbHeight & 0xff; //LSB
1849 value[3] = (UsbHeight >> 8) & 0x03; //MSB
1850
1851 errCode = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
1852 USBVISION_OP_CODE,
1853 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT,
1854 0, (__u16) USBVISION_LXSIZE_O, value, 4, HZ);
1855
1856 if (errCode < 0) {
be9ed511
MCC		 1857 dev_err(&usbvision->dev->dev,
1858 "%s failed: error %d\n", __func__, errCode);
781aa1d1
MCC		 1859 return errCode;
1860 }
1861 usbvision->curwidth = usbvision->stretch_width * UsbWidth;
1862 usbvision->curheight = usbvision->stretch_height * UsbHeight;
1863 }
1864
1865 if (usbvision->isocMode == ISOC_MODE_YUV422) {
1866 frameRate = (usbvision->isocPacketSize * 1000) / (UsbWidth * UsbHeight * 2);
1867 }
1868 else if (usbvision->isocMode == ISOC_MODE_YUV420) {
1869 frameRate = (usbvision->isocPacketSize * 1000) / ((UsbWidth * UsbHeight * 12) / 8);
1870 }
1871 else {
1872 frameRate = FRAMERATE_MAX;
1873 }
1874
c5f48367 1875 if (usbvision->tvnormId & V4L2_STD_625_50) {
18d8a454 1876 frameDrop = frameRate * 32 / 25 - 1;
781aa1d1 1877 }
c5f48367 1878 else if (usbvision->tvnormId & V4L2_STD_525_60) {
781aa1d1
MCC		 1879 frameDrop = frameRate * 32 / 30 - 1;
1880 }
1881
1882 RESTRICT_TO_RANGE(frameDrop, FRAMERATE_MIN, FRAMERATE_MAX);
1883
1884 PDEBUG(DBG_FUNC, "frameRate %d fps, frameDrop %d", frameRate, frameDrop);
1885
1886 frameDrop = FRAMERATE_MAX; // We can allow the maximum here, because dropping is controlled
1887
1888 /* frameDrop = 7; => framePhase = 1, 5, 9, 13, 17, 21, 25, 0, 4, 8, ...
1889 => frameSkip = 4;
1890 => frameRate = (7 + 1) * 25 / 32 = 200 / 32 = 6.25;
1891
1892 frameDrop = 9; => framePhase = 1, 5, 8, 11, 14, 17, 21, 24, 27, 1, 4, 8, ...
1893 => frameSkip = 4, 3, 3, 3, 3, 4, 3, 3, 3, 3, 4, ...
1894 => frameRate = (9 + 1) * 25 / 32 = 250 / 32 = 7.8125;
1895 */
1896 errCode = usbvision_write_reg(usbvision, USBVISION_FRM_RATE, frameDrop);
1897 return errCode;
1898}
1899
1900
483dfdb6
TM		 1901/*
1902 * usbvision_frames_alloc
6f78e186 1903 * allocate the required frames
483dfdb6 1904 */
6f78e186 1905int usbvision_frames_alloc(struct usb_usbvision *usbvision, int number_of_frames)
483dfdb6
TM		 1906{
1907 int i;
1908
6f78e186
TM		 1909 /*needs to be page aligned cause the buffers can be mapped individually! */
1910 usbvision->max_frame_size = PAGE_ALIGN(usbvision->curwidth *
1911 usbvision->curheight *
1912 usbvision->palette.bytes_per_pixel);
483dfdb6 1913
6f78e186
TM		 1914 /* Try to do my best to allocate the frames the user want in the remaining memory */
1915 usbvision->num_frames = number_of_frames;
1916 while (usbvision->num_frames > 0) {
1917 usbvision->fbuf_size = usbvision->num_frames * usbvision->max_frame_size;
1918 if((usbvision->fbuf = usbvision_rvmalloc(usbvision->fbuf_size))) {
1919 break;
1920 }
1921 usbvision->num_frames--;
483dfdb6 1922 }
6f78e186 1923
483dfdb6
TM		 1924 spin_lock_init(&usbvision->queue_lock);
1925 init_waitqueue_head(&usbvision->wait_frame);
1926 init_waitqueue_head(&usbvision->wait_stream);
1927
1928 /* Allocate all buffers */
6f78e186 1929 for (i = 0; i < usbvision->num_frames; i++) {
483dfdb6
TM		 1930 usbvision->frame[i].index = i;
1931 usbvision->frame[i].grabstate = FrameState_Unused;
1932 usbvision->frame[i].data = usbvision->fbuf +
1933 i * usbvision->max_frame_size;
1934 /*
1935 * Set default sizes for read operation.
1936 */
1937 usbvision->stretch_width = 1;
1938 usbvision->stretch_height = 1;
1939 usbvision->frame[i].width = usbvision->curwidth;
1940 usbvision->frame[i].height = usbvision->curheight;
1941 usbvision->frame[i].bytes_read = 0;
1942 }
6f78e186
TM		 1943 PDEBUG(DBG_FUNC, "allocated %d frames (%d bytes per frame)",usbvision->num_frames,usbvision->max_frame_size);
1944 return usbvision->num_frames;
483dfdb6
TM		 1945}
1946
1947/*
1948 * usbvision_frames_free
1949 * frees memory allocated for the frames
1950 */
1951void usbvision_frames_free(struct usb_usbvision *usbvision)
1952{
1953 /* Have to free all that memory */
6f78e186
TM		 1954 PDEBUG(DBG_FUNC, "free %d frames",usbvision->num_frames);
1955
483dfdb6
TM		 1956 if (usbvision->fbuf != NULL) {
1957 usbvision_rvfree(usbvision->fbuf, usbvision->fbuf_size);
1958 usbvision->fbuf = NULL;
6f78e186
TM		 1959
1960 usbvision->num_frames = 0;
483dfdb6
TM		 1961 }
1962}
f2242ee5
TM		 1963/*
1964 * usbvision_empty_framequeues()
1965 * prepare queues for incoming and outgoing frames
1966 */
483dfdb6 1967void usbvision_empty_framequeues(struct usb_usbvision *usbvision)
f2242ee5
TM		 1968{
1969 u32 i;
1970
1971 INIT_LIST_HEAD(&(usbvision->inqueue));
1972 INIT_LIST_HEAD(&(usbvision->outqueue));
1973
1974 for (i = 0; i < USBVISION_NUMFRAMES; i++) {
1975 usbvision->frame[i].grabstate = FrameState_Unused;
1976 usbvision->frame[i].bytes_read = 0;
1977 }
1978}
1979
1980/*
1981 * usbvision_stream_interrupt()
1982 * stops streaming
1983 */
483dfdb6 1984int usbvision_stream_interrupt(struct usb_usbvision *usbvision)
f2242ee5
TM		 1985{
1986 int ret = 0;
1987
1988 /* stop reading from the device */
1989
1990 usbvision->streaming = Stream_Interrupt;
1991 ret = wait_event_timeout(usbvision->wait_stream,
5f7fb877 1992 (usbvision->streaming == Stream_Idle),
f2242ee5
TM		 1993 msecs_to_jiffies(USBVISION_NUMSBUF*USBVISION_URB_FRAMES));
1994 return ret;
1995}
1996
781aa1d1
MCC		 1997/*
1998 * usbvision_set_compress_params()
1999 *
2000 */
2001
2002static int usbvision_set_compress_params(struct usb_usbvision *usbvision)
2003{
2004 static const char proc[] = "usbvision_set_compresion_params: ";
2005 int rc;
2006 unsigned char value[6];
2007
2008 value[0] = 0x0F; // Intra-Compression cycle
2009 value[1] = 0x01; // Reg.45 one line per strip
2010 value[2] = 0x00; // Reg.46 Force intra mode on all new frames
2011 value[3] = 0x00; // Reg.47 FORCE_UP <- 0 normal operation (not force)
2012 value[4] = 0xA2; // Reg.48 BUF_THR I'm not sure if this does something in not compressed mode.
18d8a454 2013 value[5] = 0x00; // Reg.49 DVI_YUV This has nothing to do with compression
781aa1d1
MCC		 2014
2015 //catched values for NT1004
2016 // value[0] = 0xFF; // Never apply intra mode automatically
2017 // value[1] = 0xF1; // Use full frame height for virtual strip width; One line per strip
2018 // value[2] = 0x01; // Force intra mode on all new frames
2019 // value[3] = 0x00; // Strip size 400 Bytes; do not force up
2020 // value[4] = 0xA2; //
2021 if (!USBVISION_IS_OPERATIONAL(usbvision))
2022 return 0;
2023
2024 rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
2025 USBVISION_OP_CODE,
2026 USB_DIR_OUT | USB_TYPE_VENDOR |
2027 USB_RECIP_ENDPOINT, 0,
2028 (__u16) USBVISION_INTRA_CYC, value, 5, HZ);
2029
2030 if (rc < 0) {
2031 printk(KERN_ERR "%sERROR=%d. USBVISION stopped - "
2032 "reconnect or reload driver.\n", proc, rc);
2033 return rc;
2034 }
2035
2036 if (usbvision->bridgeType == BRIDGE_NT1004) {
2037 value[0] = 20; // PCM Threshold 1
2038 value[1] = 12; // PCM Threshold 2
2039 value[2] = 255; // Distorsion Threshold inter
2040 value[3] = 255; // Distorsion Threshold intra
2041 value[4] = 43; // Max Distorsion inter
2042 value[5] = 43; // Max Distorsion intra
2043 }
2044 else {
2045 value[0] = 20; // PCM Threshold 1
2046 value[1] = 12; // PCM Threshold 2
2047 value[2] = 255; // Distorsion Threshold d7-d0
2048 value[3] = 0; // Distorsion Threshold d11-d8
2049 value[4] = 43; // Max Distorsion d7-d0
2050 value[5] = 0; // Max Distorsion d8
2051 }
2052
2053 if (!USBVISION_IS_OPERATIONAL(usbvision))
2054 return 0;
2055
2056 rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
2057 USBVISION_OP_CODE,
2058 USB_DIR_OUT | USB_TYPE_VENDOR |
2059 USB_RECIP_ENDPOINT, 0,
2060 (__u16) USBVISION_PCM_THR1, value, 6, HZ);
2061
2062 if (rc < 0) {
2063 printk(KERN_ERR "%sERROR=%d. USBVISION stopped - "
2064 "reconnect or reload driver.\n", proc, rc);
2065 return rc;
2066 }
2067
2068
2069 return rc;
2070}
2071
2072
2073/*
2074 * usbvision_set_input()
2075 *
2076 * Set the input (saa711x, ...) size x y and other misc input params
2077 * I've no idea if this parameters are right
2078 *
2079 */
483dfdb6 2080int usbvision_set_input(struct usb_usbvision *usbvision)
781aa1d1
MCC		 2081{
2082 static const char proc[] = "usbvision_set_input: ";
2083 int rc;
2084 unsigned char value[8];
2085 unsigned char dvi_yuv_value;
2086
2087 if (!USBVISION_IS_OPERATIONAL(usbvision))
2088 return 0;
2089
2090 /* Set input format expected from decoder*/
c682b3a7
TP		 2091 if (usbvision_device_data[usbvision->DevModel].Vin_Reg1_override) {
2092 value[0] = usbvision_device_data[usbvision->DevModel].Vin_Reg1;
781aa1d1
MCC		 2093 } else if(usbvision_device_data[usbvision->DevModel].Codec == CODEC_SAA7113) {
2094 /* SAA7113 uses 8 bit output */
2095 value[0] = USBVISION_8_422_SYNC;
2096 } else {
2097 /* I'm sure only about d2-d0 [010] 16 bit 4:2:2 usin sync pulses
2098 * as that is how saa7111 is configured */
2099 value[0] = USBVISION_16_422_SYNC;
2100 /* | USBVISION_VSNC_POL | USBVISION_VCLK_POL);*/
2101 }
2102
2103 rc = usbvision_write_reg(usbvision, USBVISION_VIN_REG1, value[0]);
2104 if (rc < 0) {
2105 printk(KERN_ERR "%sERROR=%d. USBVISION stopped - "
2106 "reconnect or reload driver.\n", proc, rc);
2107 return rc;
2108 }
2109
2110
c5f48367 2111 if (usbvision->tvnormId & V4L2_STD_PAL) {
781aa1d1
MCC		 2112 value[0] = 0xC0;
2113 value[1] = 0x02; //0x02C0 -> 704 Input video line length
2114 value[2] = 0x20;
2115 value[3] = 0x01; //0x0120 -> 288 Input video n. of lines
2116 value[4] = 0x60;
2117 value[5] = 0x00; //0x0060 -> 96 Input video h offset
2118 value[6] = 0x16;
2119 value[7] = 0x00; //0x0016 -> 22 Input video v offset
c5f48367 2120 } else if (usbvision->tvnormId & V4L2_STD_SECAM) {
781aa1d1
MCC		 2121 value[0] = 0xC0;
2122 value[1] = 0x02; //0x02C0 -> 704 Input video line length
2123 value[2] = 0x20;
2124 value[3] = 0x01; //0x0120 -> 288 Input video n. of lines
2125 value[4] = 0x01;
2126 value[5] = 0x00; //0x0001 -> 01 Input video h offset
2127 value[6] = 0x01;
2128 value[7] = 0x00; //0x0001 -> 01 Input video v offset
2129 } else { /* V4L2_STD_NTSC */
2130 value[0] = 0xD0;
2131 value[1] = 0x02; //0x02D0 -> 720 Input video line length
2132 value[2] = 0xF0;
2133 value[3] = 0x00; //0x00F0 -> 240 Input video number of lines
2134 value[4] = 0x50;
2135 value[5] = 0x00; //0x0050 -> 80 Input video h offset
2136 value[6] = 0x10;
2137 value[7] = 0x00; //0x0010 -> 16 Input video v offset
2138 }
2139
2140 if (usbvision_device_data[usbvision->DevModel].X_Offset >= 0) {
2141 value[4]=usbvision_device_data[usbvision->DevModel].X_Offset & 0xff;
2142 value[5]=(usbvision_device_data[usbvision->DevModel].X_Offset & 0x0300) >> 8;
2143 }
2144
c6243d9c
TM		 2145 if (adjust_X_Offset != -1) {
2146 value[4] = adjust_X_Offset & 0xff;
2147 value[5] = (adjust_X_Offset & 0x0300) >> 8;
2148 }
2149
781aa1d1
MCC		 2150 if (usbvision_device_data[usbvision->DevModel].Y_Offset >= 0) {
2151 value[6]=usbvision_device_data[usbvision->DevModel].Y_Offset & 0xff;
2152 value[7]=(usbvision_device_data[usbvision->DevModel].Y_Offset & 0x0300) >> 8;
2153 }
2154
c6243d9c
TM		 2155 if (adjust_Y_Offset != -1) {
2156 value[6] = adjust_Y_Offset & 0xff;
2157 value[7] = (adjust_Y_Offset & 0x0300) >> 8;
2158 }
2159
781aa1d1
MCC		 2160 rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
2161 USBVISION_OP_CODE, /* USBVISION specific code */
2162 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT, 0,
2163 (__u16) USBVISION_LXSIZE_I, value, 8, HZ);
2164 if (rc < 0) {
2165 printk(KERN_ERR "%sERROR=%d. USBVISION stopped - "
2166 "reconnect or reload driver.\n", proc, rc);
2167 return rc;
2168 }
2169
2170
2171 dvi_yuv_value = 0x00; /* U comes after V, Ya comes after U/V, Yb comes after Yb */
2172
c682b3a7
TP		 2173 if(usbvision_device_data[usbvision->DevModel].Dvi_yuv_override){
2174 dvi_yuv_value = usbvision_device_data[usbvision->DevModel].Dvi_yuv;
781aa1d1
MCC		 2175 }
2176 else if(usbvision_device_data[usbvision->DevModel].Codec == CODEC_SAA7113) {
18d8a454 2177 /* This changes as the fine sync control changes. Further investigation necessary */
781aa1d1
MCC		 2178 dvi_yuv_value = 0x06;
2179 }
2180
2181 return (usbvision_write_reg(usbvision, USBVISION_DVI_YUV, dvi_yuv_value));
2182}
2183
2184
2185/*
2186 * usbvision_set_dram_settings()
2187 *
2188 * Set the buffer address needed by the usbvision dram to operate
2189 * This values has been taken with usbsnoop.
2190 *
2191 */
2192
2193static int usbvision_set_dram_settings(struct usb_usbvision *usbvision)
2194{
2195 int rc;
2196 unsigned char value[8];
2197
2198 if (usbvision->isocMode == ISOC_MODE_COMPRESS) {
2199 value[0] = 0x42;
2200 value[1] = 0x71;
2201 value[2] = 0xff;
2202 value[3] = 0x00;
2203 value[4] = 0x98;
2204 value[5] = 0xe0;
2205 value[6] = 0x71;
2206 value[7] = 0xff;
2207 // UR: 0x0E200-0x3FFFF = 204288 Words (1 Word = 2 Byte)
2208 // FDL: 0x00000-0x0E099 = 57498 Words
2209 // VDW: 0x0E3FF-0x3FFFF
2210 }
2211 else {
2212 value[0] = 0x42;
2213 value[1] = 0x00;
2214 value[2] = 0xff;
2215 value[3] = 0x00;
2216 value[4] = 0x00;
2217 value[5] = 0x00;
2218 value[6] = 0x00;
2219 value[7] = 0xff;
2220 }
2221 /* These are the values of the address of the video buffer,
2222 * they have to be loaded into the USBVISION_DRM_PRM1-8
2223 *
2224 * Start address of video output buffer for read: drm_prm1-2 -> 0x00000
2225 * End address of video output buffer for read: drm_prm1-3 -> 0x1ffff
2226 * Start address of video frame delay buffer: drm_prm1-4 -> 0x20000
2227 * Only used in compressed mode
2228 * End address of video frame delay buffer: drm_prm1-5-6 -> 0x3ffff
2229 * Only used in compressed mode
2230 * Start address of video output buffer for write: drm_prm1-7 -> 0x00000
2231 * End address of video output buffer for write: drm_prm1-8 -> 0x1ffff
2232 */
2233
2234 if (!USBVISION_IS_OPERATIONAL(usbvision))
2235 return 0;
2236
2237 rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
2238 USBVISION_OP_CODE, /* USBVISION specific code */
2239 USB_DIR_OUT | USB_TYPE_VENDOR |
2240 USB_RECIP_ENDPOINT, 0,
2241 (__u16) USBVISION_DRM_PRM1, value, 8, HZ);
2242
2243 if (rc < 0) {
be9ed511 2244 dev_err(&usbvision->dev->dev, "%sERROR=%d\n", __func__, rc);
781aa1d1
MCC		 2245 return rc;
2246 }
2247
2248 /* Restart the video buffer logic */
2249 if ((rc = usbvision_write_reg(usbvision, USBVISION_DRM_CONT, USBVISION_RES_UR |
2250 USBVISION_RES_FDL | USBVISION_RES_VDW)) < 0)
2251 return rc;
2252 rc = usbvision_write_reg(usbvision, USBVISION_DRM_CONT, 0x00);
2253
2254 return rc;
2255}
2256
2257/*
2258 * ()
2259 *
2260 * Power on the device, enables suspend-resume logic
2261 * & reset the isoc End-Point
2262 *
2263 */
2264
483dfdb6 2265int usbvision_power_on(struct usb_usbvision *usbvision)
781aa1d1
MCC		 2266{
2267 int errCode = 0;
2268
2269 PDEBUG(DBG_FUNC, "");
2270
2271 usbvision_write_reg(usbvision, USBVISION_PWR_REG, USBVISION_SSPND_EN);
2272 usbvision_write_reg(usbvision, USBVISION_PWR_REG,
2273 USBVISION_SSPND_EN | USBVISION_RES2);
38284ba3 2274
781aa1d1
MCC		 2275 usbvision_write_reg(usbvision, USBVISION_PWR_REG,
2276 USBVISION_SSPND_EN | USBVISION_PWR_VID);
2277 errCode = usbvision_write_reg(usbvision, USBVISION_PWR_REG,
2278 USBVISION_SSPND_EN | USBVISION_PWR_VID | USBVISION_RES2);
2279 if (errCode == 1) {
2280 usbvision->power = 1;
2281 }
2282 PDEBUG(DBG_FUNC, "%s: errCode %d", (errCode<0)?"ERROR":"power is on", errCode);
2283 return errCode;
2284}
2285
2286
483dfdb6
TM		 2287/*
2288 * usbvision timer stuff
2289 */
2290
2291// to call usbvision_power_off from task queue
67952e8c 2292static void call_usbvision_power_off(struct work_struct *work)
483dfdb6 2293{
1de1bf06 2294 struct usb_usbvision *usbvision = container_of(work, struct usb_usbvision, powerOffWork);
483dfdb6
TM		 2295
2296 PDEBUG(DBG_FUNC, "");
289d4d2f
MK		 2297 if(mutex_lock_interruptible(&usbvision->lock)) {
2298 return;
2299 }
2300
2301
483dfdb6 2302 if(usbvision->user == 0) {
1ff16c20 2303 usbvision_i2c_unregister(usbvision);
67952e8c 2304
483dfdb6
TM		 2305 usbvision_power_off(usbvision);
2306 usbvision->initialized = 0;
2307 }
289d4d2f 2308 mutex_unlock(&usbvision->lock);
483dfdb6
TM		 2309}
2310
781aa1d1
MCC		 2311static void usbvision_powerOffTimer(unsigned long data)
2312{
2313 struct usb_usbvision *usbvision = (void *) data;
2314
2315 PDEBUG(DBG_FUNC, "");
2316 del_timer(&usbvision->powerOffTimer);
67952e8c 2317 INIT_WORK(&usbvision->powerOffWork, call_usbvision_power_off);
781aa1d1 2318 (void) schedule_work(&usbvision->powerOffWork);
781aa1d1
MCC		 2319}
2320
483dfdb6
TM		 2321void usbvision_init_powerOffTimer(struct usb_usbvision *usbvision)
2322{
2323 init_timer(&usbvision->powerOffTimer);
2324 usbvision->powerOffTimer.data = (long) usbvision;
2325 usbvision->powerOffTimer.function = usbvision_powerOffTimer;
2326}
2327
2328void usbvision_set_powerOffTimer(struct usb_usbvision *usbvision)
2329{
2330 mod_timer(&usbvision->powerOffTimer, jiffies + USBVISION_POWEROFF_TIME);
2331}
2332
2333void usbvision_reset_powerOffTimer(struct usb_usbvision *usbvision)
2334{
2335 if (timer_pending(&usbvision->powerOffTimer)) {
2336 del_timer(&usbvision->powerOffTimer);
2337 }
2338}
781aa1d1
MCC		 2339
2340/*
2341 * usbvision_begin_streaming()
2342 * Sure you have to put bit 7 to 0, if not incoming frames are droped, but no
2343 * idea about the rest
2344 */
483dfdb6 2345int usbvision_begin_streaming(struct usb_usbvision *usbvision)
781aa1d1
MCC		 2346{
2347 int errCode = 0;
2348
2349 if (usbvision->isocMode == ISOC_MODE_COMPRESS) {
2350 usbvision_init_compression(usbvision);
2351 }
2352 errCode = usbvision_write_reg(usbvision, USBVISION_VIN_REG2, USBVISION_NOHVALID |
2353 usbvision->Vin_Reg2_Preset);
2354 return errCode;
2355}
2356
2357/*
2358 * usbvision_restart_isoc()
2359 * Not sure yet if touching here PWR_REG make loose the config
2360 */
2361
483dfdb6 2362int usbvision_restart_isoc(struct usb_usbvision *usbvision)
781aa1d1
MCC		 2363{
2364 int ret;
2365
2366 if (
2367 (ret =
2368 usbvision_write_reg(usbvision, USBVISION_PWR_REG,
2369 USBVISION_SSPND_EN | USBVISION_PWR_VID)) < 0)
2370 return ret;
2371 if (
2372 (ret =
2373 usbvision_write_reg(usbvision, USBVISION_PWR_REG,
2374 USBVISION_SSPND_EN | USBVISION_PWR_VID |
2375 USBVISION_RES2)) < 0)
2376 return ret;
2377 if (
2378 (ret =
2379 usbvision_write_reg(usbvision, USBVISION_VIN_REG2,
2380 USBVISION_KEEP_BLANK | USBVISION_NOHVALID |
2381 usbvision->Vin_Reg2_Preset)) < 0) return ret;
2382
2383 /* TODO: schedule timeout */
70bdd9c8 2384 while ((usbvision_read_reg(usbvision, USBVISION_STATUS_REG) & 0x01) != 1);
781aa1d1
MCC		 2385
2386 return 0;
2387}
2388
483dfdb6 2389int usbvision_audio_off(struct usb_usbvision *usbvision)
781aa1d1
MCC		 2390{
2391 if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, USBVISION_AUDIO_MUTE) < 0) {
2392 printk(KERN_ERR "usbvision_audio_off: can't wirte reg\n");
2393 return -1;
2394 }
781aa1d1
MCC		 2395 usbvision->AudioMute = 0;
2396 usbvision->AudioChannel = USBVISION_AUDIO_MUTE;
2397 return 0;
2398}
2399
483dfdb6 2400int usbvision_set_audio(struct usb_usbvision *usbvision, int AudioChannel)
781aa1d1
MCC		 2401{
2402 if (!usbvision->AudioMute) {
2403 if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, AudioChannel) < 0) {
2404 printk(KERN_ERR "usbvision_set_audio: can't write iopin register for audio switching\n");
2405 return -1;
2406 }
2407 }
781aa1d1
MCC		 2408 usbvision->AudioChannel = AudioChannel;
2409 return 0;
2410}
2411
483dfdb6 2412int usbvision_setup(struct usb_usbvision *usbvision,int format)
781aa1d1 2413{
483dfdb6 2414 usbvision_set_video_format(usbvision, format);
781aa1d1
MCC		 2415 usbvision_set_dram_settings(usbvision);
2416 usbvision_set_compress_params(usbvision);
2417 usbvision_set_input(usbvision);
2418 usbvision_set_output(usbvision, MAX_USB_WIDTH, MAX_USB_HEIGHT);
2419 usbvision_restart_isoc(usbvision);
18d8a454 2420
781aa1d1
MCC		 2421 /* cosas del PCM */
2422 return USBVISION_IS_OPERATIONAL(usbvision);
2423}
2424
2a9f8b5d
TM		 2425int usbvision_set_alternate(struct usb_usbvision *dev)
2426{
2427 int errCode, prev_alt = dev->ifaceAlt;
2428 int i;
2429
2430 dev->ifaceAlt=0;
2431 for(i=0;i< dev->num_alt; i++)
2432 if(dev->alt_max_pkt_size[i]>dev->alt_max_pkt_size[dev->ifaceAlt])
2433 dev->ifaceAlt=i;
2434
2435 if (dev->ifaceAlt != prev_alt) {
2436 dev->isocPacketSize = dev->alt_max_pkt_size[dev->ifaceAlt];
2437 PDEBUG(DBG_FUNC,"setting alternate %d with wMaxPacketSize=%u", dev->ifaceAlt,dev->isocPacketSize);
2438 errCode = usb_set_interface(dev->dev, dev->iface, dev->ifaceAlt);
2439 if (errCode < 0) {
be9ed511
MCC		 2440 dev_err(&dev->dev->dev,
2441 "cannot change alternate number to %d (error=%i)\n",
2442 dev->ifaceAlt, errCode);
2a9f8b5d
TM		 2443 return errCode;
2444 }
2445 }
2446
2447 PDEBUG(DBG_ISOC, "ISO Packet Length:%d", dev->isocPacketSize);
2448
2449 return 0;
2450}
2451
483dfdb6
TM		 2452/*
2453 * usbvision_init_isoc()
2454 *
2455 */
2456int usbvision_init_isoc(struct usb_usbvision *usbvision)
2457{
2458 struct usb_device *dev = usbvision->dev;
2459 int bufIdx, errCode, regValue;
fe818d1d 2460 int sb_size;
483dfdb6
TM		 2461
2462 if (!USBVISION_IS_OPERATIONAL(usbvision))
2463 return -EFAULT;
2464
2465 usbvision->curFrame = NULL;
2466 scratch_reset(usbvision);
2467
2468 /* Alternate interface 1 is is the biggest frame size */
2a9f8b5d 2469 errCode = usbvision_set_alternate(usbvision);
781aa1d1
MCC		 2470 if (errCode < 0) {
2471 usbvision->last_error = errCode;
2472 return -EBUSY;
2473 }
fe818d1d 2474 sb_size = USBVISION_URB_FRAMES * usbvision->isocPacketSize;
781aa1d1 2475
fe818d1d
TM		 2476 regValue = (16 - usbvision_read_reg(usbvision,
2477 USBVISION_ALTER_REG)) & 0x0F;
781aa1d1
MCC		 2478
2479 usbvision->usb_bandwidth = regValue >> 1;
fe818d1d
TM		 2480 PDEBUG(DBG_ISOC, "USB Bandwidth Usage: %dMbit/Sec",
2481 usbvision->usb_bandwidth);
781aa1d1
MCC		 2482
2483
2484
2485 /* We double buffer the Iso lists */
2486
2487 for (bufIdx = 0; bufIdx < USBVISION_NUMSBUF; bufIdx++) {
2488 int j, k;
2489 struct urb *urb;
2490
a1ed551c 2491 urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
781aa1d1 2492 if (urb == NULL) {
be9ed511
MCC		 2493 dev_err(&usbvision->dev->dev,
2494 "%s: usb_alloc_urb() failed\n", __func__);
781aa1d1
MCC		 2495 return -ENOMEM;
2496 }
2497 usbvision->sbuf[bufIdx].urb = urb;
fe818d1d
TM		 2498 usbvision->sbuf[bufIdx].data =
2499 usb_buffer_alloc(usbvision->dev,
2500 sb_size,
2501 GFP_KERNEL,
2502 &urb->transfer_dma);
781aa1d1
MCC		 2503 urb->dev = dev;
2504 urb->context = usbvision;
2505 urb->pipe = usb_rcvisocpipe(dev, usbvision->video_endp);
f8768970 2506 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
781aa1d1 2507 urb->interval = 1;
781aa1d1
MCC		 2508 urb->transfer_buffer = usbvision->sbuf[bufIdx].data;
2509 urb->complete = usbvision_isocIrq;
2510 urb->number_of_packets = USBVISION_URB_FRAMES;
2511 urb->transfer_buffer_length =
2512 usbvision->isocPacketSize * USBVISION_URB_FRAMES;
2513 for (j = k = 0; j < USBVISION_URB_FRAMES; j++,
2514 k += usbvision->isocPacketSize) {
2515 urb->iso_frame_desc[j].offset = k;
fe818d1d
TM		 2516 urb->iso_frame_desc[j].length =
2517 usbvision->isocPacketSize;
781aa1d1
MCC		 2518 }
2519 }
2520
781aa1d1
MCC		 2521 /* Submit all URBs */
2522 for (bufIdx = 0; bufIdx < USBVISION_NUMSBUF; bufIdx++) {
fe818d1d
TM		 2523 errCode = usb_submit_urb(usbvision->sbuf[bufIdx].urb,
2524 GFP_KERNEL);
781aa1d1 2525 if (errCode) {
be9ed511
MCC		 2526 dev_err(&usbvision->dev->dev,
2527 "%s: usb_submit_urb(%d) failed: error %d\n",
2528 __func__, bufIdx, errCode);
781aa1d1
MCC		 2529 }
2530 }
2531
5f7fb877 2532 usbvision->streaming = Stream_Idle;
fe818d1d 2533 PDEBUG(DBG_ISOC, "%s: streaming=1 usbvision->video_endp=$%02x",
d2db42dd 2534 __func__,
fe818d1d 2535 usbvision->video_endp);
781aa1d1
MCC		 2536 return 0;
2537}
2538
2539/*
2540 * usbvision_stop_isoc()
2541 *
2542 * This procedure stops streaming and deallocates URBs. Then it
2543 * activates zero-bandwidth alt. setting of the video interface.
2544 *
2545 */
483dfdb6 2546void usbvision_stop_isoc(struct usb_usbvision *usbvision)
781aa1d1
MCC		 2547{
2548 int bufIdx, errCode, regValue;
fe818d1d 2549 int sb_size = USBVISION_URB_FRAMES * usbvision->isocPacketSize;
781aa1d1 2550
5f7fb877 2551 if ((usbvision->streaming == Stream_Off) || (usbvision->dev == NULL))
781aa1d1
MCC		 2552 return;
2553
2554 /* Unschedule all of the iso td's */
2555 for (bufIdx = 0; bufIdx < USBVISION_NUMSBUF; bufIdx++) {
2556 usb_kill_urb(usbvision->sbuf[bufIdx].urb);
38284ba3
TM		 2557 if (usbvision->sbuf[bufIdx].data){
2558 usb_buffer_free(usbvision->dev,
2559 sb_size,
2560 usbvision->sbuf[bufIdx].data,
2561 usbvision->sbuf[bufIdx].urb->transfer_dma);
2562 }
781aa1d1
MCC		 2563 usb_free_urb(usbvision->sbuf[bufIdx].urb);
2564 usbvision->sbuf[bufIdx].urb = NULL;
18d8a454 2565 }
781aa1d1 2566
d2db42dd 2567 PDEBUG(DBG_ISOC, "%s: streaming=Stream_Off\n", __func__);
f2242ee5 2568 usbvision->streaming = Stream_Off;
781aa1d1
MCC		 2569
2570 if (!usbvision->remove_pending) {
2571
2572 /* Set packet size to 0 */
2a9f8b5d 2573 usbvision->ifaceAlt=0;
781aa1d1 2574 errCode = usb_set_interface(usbvision->dev, usbvision->iface,
2a9f8b5d 2575 usbvision->ifaceAlt);
781aa1d1 2576 if (errCode < 0) {
be9ed511
MCC		 2577 dev_err(&usbvision->dev->dev,
2578 "%s: usb_set_interface() failed: error %d\n",
2579 __func__, errCode);
781aa1d1
MCC		 2580 usbvision->last_error = errCode;
2581 }
fe818d1d
TM		 2582 regValue = (16-usbvision_read_reg(usbvision, USBVISION_ALTER_REG)) & 0x0F;
2583 usbvision->isocPacketSize =
2584 (regValue == 0) ? 0 : (regValue * 64) - 1;
2585 PDEBUG(DBG_ISOC, "ISO Packet Length:%d",
2586 usbvision->isocPacketSize);
781aa1d1
MCC		 2587
2588 usbvision->usb_bandwidth = regValue >> 1;
fe818d1d
TM		 2589 PDEBUG(DBG_ISOC, "USB Bandwidth Usage: %dMbit/Sec",
2590 usbvision->usb_bandwidth);
781aa1d1
MCC		 2591 }
2592}
2593
483dfdb6 2594int usbvision_muxsel(struct usb_usbvision *usbvision, int channel)
781aa1d1 2595{
66a17879
TM		 2596 /* inputs #0 and #3 are constant for every SAA711x. */
2597 /* inputs #1 and #2 are variable for SAA7111 and SAA7113 */
2598 int mode[4]= {SAA7115_COMPOSITE0, 0, 0, SAA7115_COMPOSITE3};
18d8a454 2599 int audio[]= {1, 0, 0, 0};
781aa1d1
MCC		 2600 //channel 0 is TV with audiochannel 1 (tuner mono)
2601 //channel 1 is Composite with audio channel 0 (line in)
2602 //channel 2 is S-Video with audio channel 0 (line in)
2603 //channel 3 is additional video inputs to the device with audio channel 0 (line in)
2604
2605 RESTRICT_TO_RANGE(channel, 0, usbvision->video_inputs);
f2242ee5 2606 usbvision->ctl_input = channel;
781aa1d1
MCC		 2607
2608 // set the new channel
2609 // Regular USB TV Tuners -> channel: 0 = Television, 1 = Composite, 2 = S-Video
18d8a454 2610 // Four video input devices -> channel: 0 = Chan White, 1 = Chan Green, 2 = Chan Yellow, 3 = Chan Red
781aa1d1
MCC		 2611
2612 switch (usbvision_device_data[usbvision->DevModel].Codec) {
2613 case CODEC_SAA7113:
66a17879
TM		 2614 mode[1] = SAA7115_COMPOSITE2;
2615 if (SwitchSVideoInput) {
2616 /* To handle problems with S-Video Input for
2617 * some devices. Use SwitchSVideoInput
2618 * parameter when loading the module.*/
2619 mode[2] = SAA7115_COMPOSITE1;
781aa1d1
MCC		 2620 }
2621 else {
66a17879 2622 mode[2] = SAA7115_SVIDEO1;
781aa1d1
MCC		 2623 }
2624 break;
2625 case CODEC_SAA7111:
781aa1d1 2626 default:
66a17879
TM		 2627 /* modes for saa7111 */
2628 mode[1] = SAA7115_COMPOSITE1;
2629 mode[2] = SAA7115_SVIDEO1;
2630 break;
781aa1d1 2631 }
5325b427 2632 call_all(usbvision, video, s_routing, mode[channel], 0, 0);
781aa1d1
MCC		 2633 usbvision_set_audio(usbvision, audio[channel]);
2634 return 0;
2635}
2636
781aa1d1
MCC		 2637/*
2638 * Overrides for Emacs so that we follow Linus's tabbing style.
2639 * ---------------------------------------------------------------------------
2640 * Local variables:
2641 * c-basic-offset: 8
2642 * End:
2643 */
kernel source for telekom puls (alcatel/mediatek)