2 * usbvision-core.c - driver for NT100x USB video capture devices
5 * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
6 * Dwaine Garden <dwainegarden@rogers.com>
8 * This module is part of usbvision driver project.
9 * Updates to driver completed by Dwaine P. Garden
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.
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.
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.
26 #include <linux/kernel.h>
27 #include <linux/sched.h>
28 #include <linux/list.h>
29 #include <linux/timer.h>
30 #include <linux/slab.h>
32 #include <linux/utsname.h>
33 #include <linux/highmem.h>
34 #include <linux/smp_lock.h>
35 #include <linux/videodev.h>
36 #include <linux/vmalloc.h>
37 #include <linux/module.h>
38 #include <linux/init.h>
39 #include <linux/spinlock.h>
41 #include <linux/videodev2.h>
42 #include <linux/video_decoder.h>
43 #include <linux/i2c.h>
45 #include <media/saa7115.h>
46 #include <media/v4l2-common.h>
47 #include <media/tuner.h>
48 #include <media/audiochip.h>
50 #include <linux/moduleparam.h>
51 #include <linux/workqueue.h>
54 #include <linux/kmod.h>
57 #include "usbvision.h"
59 static unsigned int core_debug = 0;
60 module_param(core_debug,int,0644);
61 MODULE_PARM_DESC(core_debug,"enable debug messages [core]");
63 static unsigned int force_testpattern = 0;
64 module_param(force_testpattern,int,0644);
65 MODULE_PARM_DESC(force_testpattern,"enable test pattern display [core]");
67 static int adjustCompression = 1; // Set the compression to be adaptive
68 module_param(adjustCompression, int, 0444);
69 MODULE_PARM_DESC(adjustCompression, " Set the ADPCM compression for the device. Default: 1 (On)");
71 static int SwitchSVideoInput = 0; // To help people with Black and White output with using s-video input. Some cables and input device are wired differently.
72 module_param(SwitchSVideoInput, int, 0444);
73 MODULE_PARM_DESC(SwitchSVideoInput, " Set the S-Video input. Some cables and input device are wired differently. Default: 0 (Off)");
75 #define ENABLE_HEXDUMP 0 /* Enable if you need it */
78 #ifdef USBVISION_DEBUG
79 #define PDEBUG(level, fmt, args...) \
80 if (core_debug & (level)) info("[%s:%d] " fmt, __PRETTY_FUNCTION__, __LINE__ , ## args)
82 #define PDEBUG(level, fmt, args...) do {} while(0)
85 #define DBG_HEADER 1<<0
88 #define DBG_PARSE 1<<3
89 #define DBG_SCRATCH 1<<4
92 static const int max_imgwidth = MAX_FRAME_WIDTH;
93 static const int max_imgheight = MAX_FRAME_HEIGHT;
94 static const int min_imgwidth = MIN_FRAME_WIDTH;
95 static const int min_imgheight = MIN_FRAME_HEIGHT;
97 /* The value of 'scratch_buf_size' affects quality of the picture
98 * in many ways. Shorter buffers may cause loss of data when client
99 * is too slow. Larger buffers are memory-consuming and take longer
100 * to work with. This setting can be adjusted, but the default value
101 * should be OK for most desktop users.
103 #define DEFAULT_SCRATCH_BUF_SIZE (0x20000) // 128kB memory scratch buffer
104 static const int scratch_buf_size = DEFAULT_SCRATCH_BUF_SIZE;
106 // Function prototypes
107 static int usbvision_request_intra (struct usb_usbvision *usbvision);
108 static int usbvision_unrequest_intra (struct usb_usbvision *usbvision);
109 static int usbvision_adjust_compression (struct usb_usbvision *usbvision);
110 static int usbvision_measure_bandwidth (struct usb_usbvision *usbvision);
112 /*******************************/
113 /* Memory management functions */
114 /*******************************/
117 * Here we want the physical address of the memory.
118 * This is used when initializing the contents of the area.
121 void *usbvision_rvmalloc(unsigned long size)
126 size = PAGE_ALIGN(size);
127 mem = vmalloc_32(size);
131 memset(mem, 0, size); /* Clear the ram out, no junk to the user */
132 adr = (unsigned long) mem;
134 SetPageReserved(vmalloc_to_page((void *)adr));
142 void usbvision_rvfree(void *mem, unsigned long size)
149 size = PAGE_ALIGN(size);
151 adr = (unsigned long) mem;
152 while ((long) size > 0) {
153 ClearPageReserved(vmalloc_to_page((void *)adr));
164 static void usbvision_hexdump(const unsigned char *data, int len)
169 for (i = k = 0; len > 0; i++, len--) {
170 if (i > 0 && (i % 16 == 0)) {
174 k += sprintf(&tmp[k], "%02x ", data[i]);
181 /********************************
182 * scratch ring buffer handling
183 ********************************/
184 int scratch_len(struct usb_usbvision *usbvision) /*This returns the amount of data actually in the buffer */
186 int len = usbvision->scratch_write_ptr - usbvision->scratch_read_ptr;
188 len += scratch_buf_size;
190 PDEBUG(DBG_SCRATCH, "scratch_len() = %d\n", len);
196 /* This returns the free space left in the buffer */
197 int scratch_free(struct usb_usbvision *usbvision)
199 int free = usbvision->scratch_read_ptr - usbvision->scratch_write_ptr;
201 free += scratch_buf_size;
204 free -= 1; /* at least one byte in the buffer must */
205 /* left blank, otherwise there is no chance to differ between full and empty */
207 PDEBUG(DBG_SCRATCH, "return %d\n", free);
213 /* This puts data into the buffer */
214 int scratch_put(struct usb_usbvision *usbvision, unsigned char *data, int len)
218 if (usbvision->scratch_write_ptr + len < scratch_buf_size) {
219 memcpy(usbvision->scratch + usbvision->scratch_write_ptr, data, len);
220 usbvision->scratch_write_ptr += len;
223 len_part = scratch_buf_size - usbvision->scratch_write_ptr;
224 memcpy(usbvision->scratch + usbvision->scratch_write_ptr, data, len_part);
225 if (len == len_part) {
226 usbvision->scratch_write_ptr = 0; /* just set write_ptr to zero */
229 memcpy(usbvision->scratch, data + len_part, len - len_part);
230 usbvision->scratch_write_ptr = len - len_part;
234 PDEBUG(DBG_SCRATCH, "len=%d, new write_ptr=%d\n", len, usbvision->scratch_write_ptr);
239 /* This marks the write_ptr as position of new frame header */
240 void scratch_mark_header(struct usb_usbvision *usbvision)
242 PDEBUG(DBG_SCRATCH, "header at write_ptr=%d\n", usbvision->scratch_headermarker_write_ptr);
244 usbvision->scratch_headermarker[usbvision->scratch_headermarker_write_ptr] =
245 usbvision->scratch_write_ptr;
246 usbvision->scratch_headermarker_write_ptr += 1;
247 usbvision->scratch_headermarker_write_ptr %= USBVISION_NUM_HEADERMARKER;
250 /* This gets data from the buffer at the given "ptr" position */
251 int scratch_get_extra(struct usb_usbvision *usbvision, unsigned char *data, int *ptr, int len)
254 if (*ptr + len < scratch_buf_size) {
255 memcpy(data, usbvision->scratch + *ptr, len);
259 len_part = scratch_buf_size - *ptr;
260 memcpy(data, usbvision->scratch + *ptr, len_part);
261 if (len == len_part) {
262 *ptr = 0; /* just set the y_ptr to zero */
265 memcpy(data + len_part, usbvision->scratch, len - len_part);
266 *ptr = len - len_part;
270 PDEBUG(DBG_SCRATCH, "len=%d, new ptr=%d\n", len, *ptr);
276 /* This sets the scratch extra read pointer */
277 void scratch_set_extra_ptr(struct usb_usbvision *usbvision, int *ptr, int len)
279 *ptr = (usbvision->scratch_read_ptr + len)%scratch_buf_size;
281 PDEBUG(DBG_SCRATCH, "ptr=%d\n", *ptr);
285 /*This increments the scratch extra read pointer */
286 void scratch_inc_extra_ptr(int *ptr, int len)
288 *ptr = (*ptr + len) % scratch_buf_size;
290 PDEBUG(DBG_SCRATCH, "ptr=%d\n", *ptr);
294 /* This gets data from the buffer */
295 int scratch_get(struct usb_usbvision *usbvision, unsigned char *data, int len)
298 if (usbvision->scratch_read_ptr + len < scratch_buf_size) {
299 memcpy(data, usbvision->scratch + usbvision->scratch_read_ptr, len);
300 usbvision->scratch_read_ptr += len;
303 len_part = scratch_buf_size - usbvision->scratch_read_ptr;
304 memcpy(data, usbvision->scratch + usbvision->scratch_read_ptr, len_part);
305 if (len == len_part) {
306 usbvision->scratch_read_ptr = 0; /* just set the read_ptr to zero */
309 memcpy(data + len_part, usbvision->scratch, len - len_part);
310 usbvision->scratch_read_ptr = len - len_part;
314 PDEBUG(DBG_SCRATCH, "len=%d, new read_ptr=%d\n", len, usbvision->scratch_read_ptr);
320 /* This sets read pointer to next header and returns it */
321 int scratch_get_header(struct usb_usbvision *usbvision,struct usbvision_frame_header *header)
325 PDEBUG(DBG_SCRATCH, "from read_ptr=%d", usbvision->scratch_headermarker_read_ptr);
327 while (usbvision->scratch_headermarker_write_ptr -
328 usbvision->scratch_headermarker_read_ptr != 0) {
329 usbvision->scratch_read_ptr =
330 usbvision->scratch_headermarker[usbvision->scratch_headermarker_read_ptr];
331 usbvision->scratch_headermarker_read_ptr += 1;
332 usbvision->scratch_headermarker_read_ptr %= USBVISION_NUM_HEADERMARKER;
333 scratch_get(usbvision, (unsigned char *)header, USBVISION_HEADER_LENGTH);
334 if ((header->magic_1 == USBVISION_MAGIC_1)
335 && (header->magic_2 == USBVISION_MAGIC_2)
336 && (header->headerLength == USBVISION_HEADER_LENGTH)) {
337 errCode = USBVISION_HEADER_LENGTH;
338 header->frameWidth = header->frameWidthLo + (header->frameWidthHi << 8);
339 header->frameHeight = header->frameHeightLo + (header->frameHeightHi << 8);
348 /*This removes len bytes of old data from the buffer */
349 void scratch_rm_old(struct usb_usbvision *usbvision, int len)
352 usbvision->scratch_read_ptr += len;
353 usbvision->scratch_read_ptr %= scratch_buf_size;
354 PDEBUG(DBG_SCRATCH, "read_ptr is now %d\n", usbvision->scratch_read_ptr);
358 /*This resets the buffer - kills all data in it too */
359 void scratch_reset(struct usb_usbvision *usbvision)
361 PDEBUG(DBG_SCRATCH, "\n");
363 usbvision->scratch_read_ptr = 0;
364 usbvision->scratch_write_ptr = 0;
365 usbvision->scratch_headermarker_read_ptr = 0;
366 usbvision->scratch_headermarker_write_ptr = 0;
367 usbvision->isocstate = IsocState_NoFrame;
370 int usbvision_scratch_alloc(struct usb_usbvision *usbvision)
372 usbvision->scratch = vmalloc(scratch_buf_size);
373 scratch_reset(usbvision);
374 if(usbvision->scratch == NULL) {
375 err("%s: unable to allocate %d bytes for scratch",
376 __FUNCTION__, scratch_buf_size);
382 void usbvision_scratch_free(struct usb_usbvision *usbvision)
384 if (usbvision->scratch != NULL) {
385 vfree(usbvision->scratch);
386 usbvision->scratch = NULL;
391 * usbvision_testpattern()
393 * Procedure forms a test pattern (yellow grid on blue background).
396 * fullframe: if TRUE then entire frame is filled, otherwise the procedure
397 * continues from the current scanline.
398 * pmode 0: fill the frame with solid blue color (like on VCR or TV)
399 * 1: Draw a colored grid
402 void usbvision_testpattern(struct usb_usbvision *usbvision, int fullframe,
405 static const char proc[] = "usbvision_testpattern";
406 struct usbvision_frame *frame;
410 static int num_pass = 0;
412 if (usbvision == NULL) {
413 printk(KERN_ERR "%s: usbvision == NULL\n", proc);
416 if (usbvision->curFrame == NULL) {
417 printk(KERN_ERR "%s: usbvision->curFrame is NULL.\n", proc);
421 /* Grab the current frame */
422 frame = usbvision->curFrame;
424 /* Optionally start at the beginning */
427 frame->scanlength = 0;
430 /* Form every scan line */
431 for (; frame->curline < frame->frmheight; frame->curline++) {
434 f = frame->data + (usbvision->curwidth * 3 * frame->curline);
435 for (i = 0; i < usbvision->curwidth; i++) {
436 unsigned char cb = 0x80;
437 unsigned char cg = 0;
438 unsigned char cr = 0;
441 if (frame->curline % 32 == 0)
442 cb = 0, cg = cr = 0xFF;
443 else if (i % 32 == 0) {
444 if (frame->curline % 32 == 1)
446 cb = 0, cg = cr = 0xFF;
453 num_pass * 2) & 0xFF;
456 num_pass * 3) & 0xFF;
459 /* Just the blue screen */
469 frame->grabstate = FrameState_Done;
470 frame->scanlength += scan_length;
476 * usbvision_decompress_alloc()
478 * allocates intermediate buffer for decompression
480 int usbvision_decompress_alloc(struct usb_usbvision *usbvision)
482 int IFB_size = MAX_FRAME_WIDTH * MAX_FRAME_HEIGHT * 3 / 2;
483 usbvision->IntraFrameBuffer = vmalloc(IFB_size);
484 if (usbvision->IntraFrameBuffer == NULL) {
485 err("%s: unable to allocate %d for compr. frame buffer", __FUNCTION__, IFB_size);
492 * usbvision_decompress_free()
494 * frees intermediate buffer for decompression
496 void usbvision_decompress_free(struct usb_usbvision *usbvision)
498 if (usbvision->IntraFrameBuffer != NULL) {
499 vfree(usbvision->IntraFrameBuffer);
500 usbvision->IntraFrameBuffer = NULL;
504 /************************************************************
505 * Here comes the data parsing stuff that is run as interrupt
506 ************************************************************/
508 * usbvision_find_header()
510 * Locate one of supported header markers in the scratch buffer.
512 static enum ParseState usbvision_find_header(struct usb_usbvision *usbvision)
514 struct usbvision_frame *frame;
517 frame = usbvision->curFrame;
519 while (scratch_get_header(usbvision, &frame->isocHeader) == USBVISION_HEADER_LENGTH) {
520 // found header in scratch
521 PDEBUG(DBG_HEADER, "found header: 0x%02x%02x %d %d %d %d %#x 0x%02x %u %u",
522 frame->isocHeader.magic_2,
523 frame->isocHeader.magic_1,
524 frame->isocHeader.headerLength,
525 frame->isocHeader.frameNum,
526 frame->isocHeader.framePhase,
527 frame->isocHeader.frameLatency,
528 frame->isocHeader.dataFormat,
529 frame->isocHeader.formatParam,
530 frame->isocHeader.frameWidth,
531 frame->isocHeader.frameHeight);
533 if (usbvision->requestIntra) {
534 if (frame->isocHeader.formatParam & 0x80) {
536 usbvision->lastIsocFrameNum = -1; // do not check for lost frames this time
537 usbvision_unrequest_intra(usbvision);
548 frame->frmwidth = frame->isocHeader.frameWidth * usbvision->stretch_width;
549 frame->frmheight = frame->isocHeader.frameHeight * usbvision->stretch_height;
550 frame->v4l2_linesize = (frame->frmwidth * frame->v4l2_format.depth)>> 3;
552 else { // no header found
553 PDEBUG(DBG_HEADER, "skipping scratch data, no header");
554 scratch_reset(usbvision);
555 return ParseState_EndParse;
559 if (frame->isocHeader.dataFormat==ISOC_MODE_COMPRESS) {
560 //check isocHeader.frameNum for lost frames
561 if (usbvision->lastIsocFrameNum >= 0) {
562 if (((usbvision->lastIsocFrameNum + 1) % 32) != frame->isocHeader.frameNum) {
563 // unexpected frame drop: need to request new intra frame
564 PDEBUG(DBG_HEADER, "Lost frame before %d on USB", frame->isocHeader.frameNum);
565 usbvision_request_intra(usbvision);
566 return ParseState_NextFrame;
569 usbvision->lastIsocFrameNum = frame->isocHeader.frameNum;
571 usbvision->header_count++;
572 frame->scanstate = ScanState_Lines;
575 if (force_testpattern) {
576 usbvision_testpattern(usbvision, 1, 1);
577 return ParseState_NextFrame;
579 return ParseState_Continue;
582 static enum ParseState usbvision_parse_lines_422(struct usb_usbvision *usbvision,
585 volatile struct usbvision_frame *frame;
589 unsigned char yuyv[4]={180, 128, 10, 128}; // YUV components
590 unsigned char rv, gv, bv; // RGB components
591 int clipmask_index, bytes_per_pixel;
592 int stretch_bytes, clipmask_add;
594 frame = usbvision->curFrame;
595 f = frame->data + (frame->v4l2_linesize * frame->curline);
597 /* Make sure there's enough data for the entire line */
598 len = (frame->isocHeader.frameWidth * 2)+5;
599 if (scratch_len(usbvision) < len) {
600 PDEBUG(DBG_PARSE, "out of data in line %d, need %u.\n", frame->curline, len);
601 return ParseState_Out;
604 if ((frame->curline + 1) >= frame->frmheight) {
605 return ParseState_NextFrame;
608 bytes_per_pixel = frame->v4l2_format.bytes_per_pixel;
609 stretch_bytes = (usbvision->stretch_width - 1) * bytes_per_pixel;
610 clipmask_index = frame->curline * MAX_FRAME_WIDTH;
611 clipmask_add = usbvision->stretch_width;
613 for (i = 0; i < frame->frmwidth; i+=(2 * usbvision->stretch_width)) {
615 scratch_get(usbvision, &yuyv[0], 4);
617 if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
623 YUV_TO_RGB_BY_THE_BOOK(yuyv[0], yuyv[1], yuyv[3], rv, gv, bv);
624 switch (frame->v4l2_format.format) {
625 case V4L2_PIX_FMT_RGB565:
626 *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 3));
627 *f++ = (0x07 & (gv >> 5)) | (0xF8 & rv);
629 case V4L2_PIX_FMT_RGB24:
634 case V4L2_PIX_FMT_RGB32:
640 case V4L2_PIX_FMT_RGB555:
641 *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 2));
642 *f++ = (0x03 & (gv >> 6)) | (0x7C & (rv >> 1));
646 clipmask_index += clipmask_add;
649 if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
655 YUV_TO_RGB_BY_THE_BOOK(yuyv[2], yuyv[1], yuyv[3], rv, gv, bv);
656 switch (frame->v4l2_format.format) {
657 case V4L2_PIX_FMT_RGB565:
658 *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 3));
659 *f++ = (0x07 & (gv >> 5)) | (0xF8 & rv);
661 case V4L2_PIX_FMT_RGB24:
666 case V4L2_PIX_FMT_RGB32:
672 case V4L2_PIX_FMT_RGB555:
673 *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 2));
674 *f++ = (0x03 & (gv >> 6)) | (0x7C & (rv >> 1));
678 clipmask_index += clipmask_add;
682 frame->curline += usbvision->stretch_height;
683 *pcopylen += frame->v4l2_linesize * usbvision->stretch_height;
685 if (frame->curline >= frame->frmheight) {
686 return ParseState_NextFrame;
689 return ParseState_Continue;
693 /* The decompression routine */
694 static int usbvision_decompress(struct usb_usbvision *usbvision,unsigned char *Compressed,
695 unsigned char *Decompressed, int *StartPos,
696 int *BlockTypeStartPos, int Len)
698 int RestPixel, Idx, MaxPos, Pos, ExtraPos, BlockLen, BlockTypePos, BlockTypeLen;
699 unsigned char BlockByte, BlockCode, BlockType, BlockTypeByte, Integrator;
703 BlockTypePos = *BlockTypeStartPos;
704 MaxPos = 396; //Pos + Len;
714 for (Idx = 0; Idx < Len; Idx++) {
717 if (BlockTypeLen==0) {
718 BlockTypeByte = Compressed[BlockTypePos];
722 BlockType = (BlockTypeByte & 0xC0) >> 6;
725 usbvision->ComprBlockTypes[BlockType]++;
728 if (BlockType == 0) {
729 if(RestPixel >= 24) {
732 Integrator = Decompressed[Idx];
734 Idx += RestPixel - 1;
738 BlockCode = Compressed[Pos];
740 if (RestPixel >= 24) {
743 BlockLen = RestPixel;
745 RestPixel -= BlockLen;
746 ExtraPos = Pos + (BlockLen / 4);
752 if ((BlockLen%4) == 0) {
753 BlockByte = Compressed[Pos];
756 if (BlockType == 1) { //inter Block
757 Integrator = Decompressed[Idx];
759 switch (BlockByte & 0xC0) {
761 Integrator += Compressed[ExtraPos];
765 Integrator += BlockCode;
768 Integrator -= BlockCode;
771 Decompressed[Idx] = Integrator;
776 *StartPos = ExtraPos;
777 *BlockTypeStartPos = BlockTypePos;
783 * usbvision_parse_compress()
785 * Parse compressed frame from the scratch buffer, put
786 * decoded RGB value into the current frame buffer and add the written
787 * number of bytes (RGB) to the *pcopylen.
790 static enum ParseState usbvision_parse_compress(struct usb_usbvision *usbvision,
793 #define USBVISION_STRIP_MAGIC 0x5A
794 #define USBVISION_STRIP_LEN_MAX 400
795 #define USBVISION_STRIP_HEADER_LEN 3
797 struct usbvision_frame *frame;
798 unsigned char *f,*u = NULL ,*v = NULL;
799 unsigned char StripData[USBVISION_STRIP_LEN_MAX];
800 unsigned char StripHeader[USBVISION_STRIP_HEADER_LEN];
801 int Idx, IdxEnd, StripLen, StripPtr, StartBlockPos, BlockPos, BlockTypePos;
802 int clipmask_index, bytes_per_pixel, rc;
804 unsigned char rv, gv, bv;
805 static unsigned char *Y, *U, *V;
807 frame = usbvision->curFrame;
808 imageSize = frame->frmwidth * frame->frmheight;
809 if ( (frame->v4l2_format.format == V4L2_PIX_FMT_YUV422P) ||
810 (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420) ) { // this is a planar format
811 //... v4l2_linesize not used here.
812 f = frame->data + (frame->width * frame->curline);
814 f = frame->data + (frame->v4l2_linesize * frame->curline);
816 if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV){ //initialise u and v pointers
817 // get base of u and b planes add halfoffset
821 + (frame->frmwidth >>1) * frame->curline ;
822 v = u + (imageSize >>1 );
824 } else if (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420){
826 v = frame->data + imageSize + ((frame->curline* (frame->width))>>2) ;
827 u = v + (imageSize >>2) ;
830 if (frame->curline == 0) {
831 usbvision_adjust_compression(usbvision);
834 if (scratch_len(usbvision) < USBVISION_STRIP_HEADER_LEN) {
835 return ParseState_Out;
838 //get strip header without changing the scratch_read_ptr
839 scratch_set_extra_ptr(usbvision, &StripPtr, 0);
840 scratch_get_extra(usbvision, &StripHeader[0], &StripPtr,
841 USBVISION_STRIP_HEADER_LEN);
843 if (StripHeader[0] != USBVISION_STRIP_MAGIC) {
845 usbvision->stripMagicErrors++;
846 return ParseState_NextFrame;
849 if (frame->curline != (int)StripHeader[2]) {
850 //line number missmatch error
851 usbvision->stripLineNumberErrors++;
854 StripLen = 2 * (unsigned int)StripHeader[1];
855 if (StripLen > USBVISION_STRIP_LEN_MAX) {
857 // I think this never happens
858 usbvision_request_intra(usbvision);
861 if (scratch_len(usbvision) < StripLen) {
862 //there is not enough data for the strip
863 return ParseState_Out;
866 if (usbvision->IntraFrameBuffer) {
867 Y = usbvision->IntraFrameBuffer + frame->frmwidth * frame->curline;
868 U = usbvision->IntraFrameBuffer + imageSize + (frame->frmwidth / 2) * (frame->curline / 2);
869 V = usbvision->IntraFrameBuffer + imageSize / 4 * 5 + (frame->frmwidth / 2) * (frame->curline / 2);
872 return ParseState_NextFrame;
875 bytes_per_pixel = frame->v4l2_format.bytes_per_pixel;
876 clipmask_index = frame->curline * MAX_FRAME_WIDTH;
878 scratch_get(usbvision, StripData, StripLen);
880 IdxEnd = frame->frmwidth;
881 BlockTypePos = USBVISION_STRIP_HEADER_LEN;
882 StartBlockPos = BlockTypePos + (IdxEnd - 1) / 96 + (IdxEnd / 2 - 1) / 96 + 2;
883 BlockPos = StartBlockPos;
885 usbvision->BlockPos = BlockPos;
887 if ((rc = usbvision_decompress(usbvision, StripData, Y, &BlockPos, &BlockTypePos, IdxEnd)) != IdxEnd) {
888 //return ParseState_Continue;
890 if (StripLen > usbvision->maxStripLen) {
891 usbvision->maxStripLen = StripLen;
894 if (frame->curline%2) {
895 if ((rc = usbvision_decompress(usbvision, StripData, V, &BlockPos, &BlockTypePos, IdxEnd/2)) != IdxEnd/2) {
896 //return ParseState_Continue;
900 if ((rc = usbvision_decompress(usbvision, StripData, U, &BlockPos, &BlockTypePos, IdxEnd/2)) != IdxEnd/2) {
901 //return ParseState_Continue;
905 if (BlockPos > usbvision->comprBlockPos) {
906 usbvision->comprBlockPos = BlockPos;
908 if (BlockPos > StripLen) {
909 usbvision->stripLenErrors++;
912 for (Idx = 0; Idx < IdxEnd; Idx++) {
913 if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
915 *f++ = Idx & 0x01 ? U[Idx/2] : V[Idx/2];
917 else if(frame->v4l2_format.format == V4L2_PIX_FMT_YUV422P) {
924 else if (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420) {
926 if ( !(( Idx & 0x01 ) | ( frame->curline & 0x01 )) ){
928 /* only need do this for 1 in 4 pixels */
929 /* intraframe buffer is YUV420 format */
937 YUV_TO_RGB_BY_THE_BOOK(Y[Idx], U[Idx/2], V[Idx/2], rv, gv, bv);
938 switch (frame->v4l2_format.format) {
939 case V4L2_PIX_FMT_GREY:
942 case V4L2_PIX_FMT_RGB555:
943 *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 2));
944 *f++ = (0x03 & (gv >> 6)) | (0x7C & (rv >> 1));
946 case V4L2_PIX_FMT_RGB565:
947 *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 3));
948 *f++ = (0x07 & (gv >> 5)) | (0xF8 & rv);
950 case V4L2_PIX_FMT_RGB24:
955 case V4L2_PIX_FMT_RGB32:
965 /* Deal with non-integer no. of bytes for YUV420P */
966 if (frame->v4l2_format.format != V4L2_PIX_FMT_YVU420 )
967 *pcopylen += frame->v4l2_linesize;
969 *pcopylen += frame->curline & 0x01 ? frame->v4l2_linesize : frame->v4l2_linesize << 1;
973 if (frame->curline >= frame->frmheight) {
974 return ParseState_NextFrame;
977 return ParseState_Continue;
984 * usbvision_parse_lines_420()
986 * Parse two lines from the scratch buffer, put
987 * decoded RGB value into the current frame buffer and add the written
988 * number of bytes (RGB) to the *pcopylen.
991 static enum ParseState usbvision_parse_lines_420(struct usb_usbvision *usbvision,
994 struct usbvision_frame *frame;
995 unsigned char *f_even = NULL, *f_odd = NULL;
996 unsigned int pixel_per_line, block;
997 int pixel, block_split;
998 int y_ptr, u_ptr, v_ptr, y_odd_offset;
999 const int y_block_size = 128;
1000 const int uv_block_size = 64;
1001 const int sub_block_size = 32;
1002 const int y_step[] = { 0, 0, 0, 2 }, y_step_size = 4;
1003 const int uv_step[]= { 0, 0, 0, 4 }, uv_step_size = 4;
1004 unsigned char y[2], u, v; /* YUV components */
1005 int y_, u_, v_, vb, uvg, ur;
1006 int r_, g_, b_; /* RGB components */
1008 int clipmask_even_index, clipmask_odd_index, bytes_per_pixel;
1009 int clipmask_add, stretch_bytes;
1011 frame = usbvision->curFrame;
1012 f_even = frame->data + (frame->v4l2_linesize * frame->curline);
1013 f_odd = f_even + frame->v4l2_linesize * usbvision->stretch_height;
1015 /* Make sure there's enough data for the entire line */
1016 /* In this mode usbvision transfer 3 bytes for every 2 pixels */
1017 /* I need two lines to decode the color */
1018 bytes_per_pixel = frame->v4l2_format.bytes_per_pixel;
1019 stretch_bytes = (usbvision->stretch_width - 1) * bytes_per_pixel;
1020 clipmask_even_index = frame->curline * MAX_FRAME_WIDTH;
1021 clipmask_odd_index = clipmask_even_index + MAX_FRAME_WIDTH;
1022 clipmask_add = usbvision->stretch_width;
1023 pixel_per_line = frame->isocHeader.frameWidth;
1025 if (scratch_len(usbvision) < (int)pixel_per_line * 3) {
1026 //printk(KERN_DEBUG "out of data, need %d\n", len);
1027 return ParseState_Out;
1030 if ((frame->curline + 1) >= frame->frmheight) {
1031 return ParseState_NextFrame;
1034 block_split = (pixel_per_line%y_block_size) ? 1 : 0; //are some blocks splitted into different lines?
1036 y_odd_offset = (pixel_per_line / y_block_size) * (y_block_size + uv_block_size)
1037 + block_split * uv_block_size;
1039 scratch_set_extra_ptr(usbvision, &y_ptr, y_odd_offset);
1040 scratch_set_extra_ptr(usbvision, &u_ptr, y_block_size);
1041 scratch_set_extra_ptr(usbvision, &v_ptr, y_odd_offset
1042 + (4 - block_split) * sub_block_size);
1044 for (block = 0; block < (pixel_per_line / sub_block_size);
1048 for (pixel = 0; pixel < sub_block_size; pixel +=2) {
1049 scratch_get(usbvision, &y[0], 2);
1050 scratch_get_extra(usbvision, &u, &u_ptr, 1);
1051 scratch_get_extra(usbvision, &v, &v_ptr, 1);
1053 //I don't use the YUV_TO_RGB macro for better performance
1057 uvg= -53281 * u_ - 25625 * v_;
1060 if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
1065 y_ = 76284 * (y[0] - 16);
1067 b_ = (y_ + vb) >> 16;
1068 g_ = (y_ + uvg)>> 16;
1069 r_ = (y_ + ur) >> 16;
1071 switch (frame->v4l2_format.format) {
1072 case V4L2_PIX_FMT_RGB565:
1074 *f_even++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 3));
1075 *f_even++ = (0x07 & ( g >> 5)) | (0xF8 & LIMIT_RGB(r_));
1077 case V4L2_PIX_FMT_RGB24:
1078 *f_even++ = LIMIT_RGB(b_);
1079 *f_even++ = LIMIT_RGB(g_);
1080 *f_even++ = LIMIT_RGB(r_);
1082 case V4L2_PIX_FMT_RGB32:
1083 *f_even++ = LIMIT_RGB(b_);
1084 *f_even++ = LIMIT_RGB(g_);
1085 *f_even++ = LIMIT_RGB(r_);
1088 case V4L2_PIX_FMT_RGB555:
1090 *f_even++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 2));
1091 *f_even++ = (0x03 & ( g >> 6)) |
1092 (0x7C & (LIMIT_RGB(r_) >> 1));
1096 clipmask_even_index += clipmask_add;
1097 f_even += stretch_bytes;
1099 if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
1104 y_ = 76284 * (y[1] - 16);
1106 b_ = (y_ + vb) >> 16;
1107 g_ = (y_ + uvg)>> 16;
1108 r_ = (y_ + ur) >> 16;
1110 switch (frame->v4l2_format.format) {
1111 case V4L2_PIX_FMT_RGB565:
1113 *f_even++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 3));
1114 *f_even++ = (0x07 & ( g >> 5)) | (0xF8 & LIMIT_RGB(r_));
1116 case V4L2_PIX_FMT_RGB24:
1117 *f_even++ = LIMIT_RGB(b_);
1118 *f_even++ = LIMIT_RGB(g_);
1119 *f_even++ = LIMIT_RGB(r_);
1121 case V4L2_PIX_FMT_RGB32:
1122 *f_even++ = LIMIT_RGB(b_);
1123 *f_even++ = LIMIT_RGB(g_);
1124 *f_even++ = LIMIT_RGB(r_);
1127 case V4L2_PIX_FMT_RGB555:
1129 *f_even++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 2));
1130 *f_even++ = (0x03 & ( g >> 6)) |
1131 (0x7C & (LIMIT_RGB(r_) >> 1));
1135 clipmask_even_index += clipmask_add;
1136 f_even += stretch_bytes;
1138 scratch_get_extra(usbvision, &y[0], &y_ptr, 2);
1140 if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
1145 y_ = 76284 * (y[0] - 16);
1147 b_ = (y_ + vb) >> 16;
1148 g_ = (y_ + uvg)>> 16;
1149 r_ = (y_ + ur) >> 16;
1151 switch (frame->v4l2_format.format) {
1152 case V4L2_PIX_FMT_RGB565:
1154 *f_odd++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 3));
1155 *f_odd++ = (0x07 & ( g >> 5)) | (0xF8 & LIMIT_RGB(r_));
1157 case V4L2_PIX_FMT_RGB24:
1158 *f_odd++ = LIMIT_RGB(b_);
1159 *f_odd++ = LIMIT_RGB(g_);
1160 *f_odd++ = LIMIT_RGB(r_);
1162 case V4L2_PIX_FMT_RGB32:
1163 *f_odd++ = LIMIT_RGB(b_);
1164 *f_odd++ = LIMIT_RGB(g_);
1165 *f_odd++ = LIMIT_RGB(r_);
1168 case V4L2_PIX_FMT_RGB555:
1170 *f_odd++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 2));
1171 *f_odd++ = (0x03 & ( g >> 6)) |
1172 (0x7C & (LIMIT_RGB(r_) >> 1));
1176 clipmask_odd_index += clipmask_add;
1177 f_odd += stretch_bytes;
1179 if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
1184 y_ = 76284 * (y[1] - 16);
1186 b_ = (y_ + vb) >> 16;
1187 g_ = (y_ + uvg)>> 16;
1188 r_ = (y_ + ur) >> 16;
1190 switch (frame->v4l2_format.format) {
1191 case V4L2_PIX_FMT_RGB565:
1193 *f_odd++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 3));
1194 *f_odd++ = (0x07 & ( g >> 5)) | (0xF8 & LIMIT_RGB(r_));
1196 case V4L2_PIX_FMT_RGB24:
1197 *f_odd++ = LIMIT_RGB(b_);
1198 *f_odd++ = LIMIT_RGB(g_);
1199 *f_odd++ = LIMIT_RGB(r_);
1201 case V4L2_PIX_FMT_RGB32:
1202 *f_odd++ = LIMIT_RGB(b_);
1203 *f_odd++ = LIMIT_RGB(g_);
1204 *f_odd++ = LIMIT_RGB(r_);
1207 case V4L2_PIX_FMT_RGB555:
1209 *f_odd++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 2));
1210 *f_odd++ = (0x03 & ( g >> 6)) |
1211 (0x7C & (LIMIT_RGB(r_) >> 1));
1215 clipmask_odd_index += clipmask_add;
1216 f_odd += stretch_bytes;
1219 scratch_rm_old(usbvision,y_step[block % y_step_size] * sub_block_size);
1220 scratch_inc_extra_ptr(&y_ptr, y_step[(block + 2 * block_split) % y_step_size]
1222 scratch_inc_extra_ptr(&u_ptr, uv_step[block % uv_step_size]
1224 scratch_inc_extra_ptr(&v_ptr, uv_step[(block + 2 * block_split) % uv_step_size]
1228 scratch_rm_old(usbvision, pixel_per_line * 3 / 2
1229 + block_split * sub_block_size);
1231 frame->curline += 2 * usbvision->stretch_height;
1232 *pcopylen += frame->v4l2_linesize * 2 * usbvision->stretch_height;
1234 if (frame->curline >= frame->frmheight)
1235 return ParseState_NextFrame;
1237 return ParseState_Continue;
1241 * usbvision_parse_data()
1243 * Generic routine to parse the scratch buffer. It employs either
1244 * usbvision_find_header() or usbvision_parse_lines() to do most
1248 static void usbvision_parse_data(struct usb_usbvision *usbvision)
1250 struct usbvision_frame *frame;
1251 enum ParseState newstate;
1253 unsigned long lock_flags;
1255 frame = usbvision->curFrame;
1257 PDEBUG(DBG_PARSE, "parsing len=%d\n", scratch_len(usbvision));
1261 newstate = ParseState_Out;
1262 if (scratch_len(usbvision)) {
1263 if (frame->scanstate == ScanState_Scanning) {
1264 newstate = usbvision_find_header(usbvision);
1266 else if (frame->scanstate == ScanState_Lines) {
1267 if (usbvision->isocMode == ISOC_MODE_YUV420) {
1268 newstate = usbvision_parse_lines_420(usbvision, ©len);
1270 else if (usbvision->isocMode == ISOC_MODE_YUV422) {
1271 newstate = usbvision_parse_lines_422(usbvision, ©len);
1273 else if (usbvision->isocMode == ISOC_MODE_COMPRESS) {
1274 newstate = usbvision_parse_compress(usbvision, ©len);
1279 if (newstate == ParseState_Continue) {
1282 else if ((newstate == ParseState_NextFrame) || (newstate == ParseState_Out)) {
1286 return; /* ParseState_EndParse */
1290 if (newstate == ParseState_NextFrame) {
1291 frame->grabstate = FrameState_Done;
1292 do_gettimeofday(&(frame->timestamp));
1293 frame->sequence = usbvision->frame_num;
1295 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1296 list_move_tail(&(frame->frame), &usbvision->outqueue);
1297 usbvision->curFrame = NULL;
1298 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1300 usbvision->frame_num++;
1302 /* This will cause the process to request another frame. */
1303 if (waitqueue_active(&usbvision->wait_frame)) {
1304 PDEBUG(DBG_PARSE, "Wake up !");
1305 wake_up_interruptible(&usbvision->wait_frame);
1309 frame->grabstate = FrameState_Grabbing;
1312 /* Update the frame's uncompressed length. */
1313 frame->scanlength += copylen;
1318 * Make all of the blocks of data contiguous
1320 static int usbvision_compress_isochronous(struct usb_usbvision *usbvision,
1323 unsigned char *packet_data;
1326 for (i = 0; i < urb->number_of_packets; i++) {
1327 int packet_len = urb->iso_frame_desc[i].actual_length;
1328 int packet_stat = urb->iso_frame_desc[i].status;
1330 packet_data = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
1332 /* Detect and ignore errored packets */
1333 if (packet_stat) { // packet_stat != 0 ?????????????
1334 PDEBUG(DBG_ISOC, "data error: [%d] len=%d, status=%X", i, packet_len, packet_stat);
1335 usbvision->isocErrCount++;
1339 /* Detect and ignore empty packets */
1340 if (packet_len < 0) {
1341 PDEBUG(DBG_ISOC, "error packet [%d]", i);
1342 usbvision->isocSkipCount++;
1345 else if (packet_len == 0) { /* Frame end ????? */
1346 PDEBUG(DBG_ISOC, "null packet [%d]", i);
1347 usbvision->isocstate=IsocState_NoFrame;
1348 usbvision->isocSkipCount++;
1351 else if (packet_len > usbvision->isocPacketSize) {
1352 PDEBUG(DBG_ISOC, "packet[%d] > isocPacketSize", i);
1353 usbvision->isocSkipCount++;
1357 PDEBUG(DBG_ISOC, "packet ok [%d] len=%d", i, packet_len);
1359 if (usbvision->isocstate==IsocState_NoFrame) { //new frame begins
1360 usbvision->isocstate=IsocState_InFrame;
1361 scratch_mark_header(usbvision);
1362 usbvision_measure_bandwidth(usbvision);
1363 PDEBUG(DBG_ISOC, "packet with header");
1367 * If usbvision continues to feed us with data but there is no
1368 * consumption (if, for example, V4L client fell asleep) we
1369 * may overflow the buffer. We have to move old data over to
1370 * free room for new data. This is bad for old data. If we
1371 * just drop new data then it's bad for new data... choose
1372 * your favorite evil here.
1374 if (scratch_free(usbvision) < packet_len) {
1376 usbvision->scratch_ovf_count++;
1377 PDEBUG(DBG_ISOC, "scratch buf overflow! scr_len: %d, n: %d",
1378 scratch_len(usbvision), packet_len);
1379 scratch_rm_old(usbvision, packet_len - scratch_free(usbvision));
1382 /* Now we know that there is enough room in scratch buffer */
1383 scratch_put(usbvision, packet_data, packet_len);
1384 totlen += packet_len;
1385 usbvision->isocDataCount += packet_len;
1386 usbvision->isocPacketCount++;
1392 printk(KERN_DEBUG "+%d.\n", usbvision->scratchlen);
1393 usbvision_hexdump(data0, (totlen > 64) ? 64 : totlen);
1401 static void usbvision_isocIrq(struct urb *urb)
1405 struct usb_usbvision *usbvision = urb->context;
1407 unsigned long startTime = jiffies;
1408 struct usbvision_frame **f;
1410 /* We don't want to do anything if we are about to be removed! */
1411 if (!USBVISION_IS_OPERATIONAL(usbvision))
1414 f = &usbvision->curFrame;
1416 /* Manage streaming interruption */
1417 if (usbvision->streaming == Stream_Interrupt) {
1418 usbvision->streaming = Stream_Idle;
1420 (*f)->grabstate = FrameState_Ready;
1421 (*f)->scanstate = ScanState_Scanning;
1423 PDEBUG(DBG_IRQ, "stream interrupted");
1424 wake_up_interruptible(&usbvision->wait_stream);
1427 /* Copy the data received into our scratch buffer */
1428 len = usbvision_compress_isochronous(usbvision, urb);
1430 usbvision->isocUrbCount++;
1431 usbvision->urb_length = len;
1433 if (usbvision->streaming == Stream_On) {
1435 /* If we collected enough data let's parse! */
1436 if (scratch_len(usbvision) > USBVISION_HEADER_LENGTH) { /* 12 == header_length */
1437 /*If we don't have a frame we're current working on, complain */
1438 if(!list_empty(&(usbvision->inqueue))) {
1440 (*f) = list_entry(usbvision->inqueue.next,struct usbvision_frame, frame);
1442 usbvision_parse_data(usbvision);
1445 PDEBUG(DBG_IRQ, "received data, but no one needs it");
1446 scratch_reset(usbvision);
1451 PDEBUG(DBG_IRQ, "received data, but no one needs it");
1452 scratch_reset(usbvision);
1455 usbvision->timeInIrq += jiffies - startTime;
1457 for (i = 0; i < USBVISION_URB_FRAMES; i++) {
1458 urb->iso_frame_desc[i].status = 0;
1459 urb->iso_frame_desc[i].actual_length = 0;
1463 urb->dev = usbvision->dev;
1464 errCode = usb_submit_urb (urb, GFP_ATOMIC);
1466 /* Disable this warning. By design of the driver. */
1468 // err("%s: usb_submit_urb failed: error %d", __FUNCTION__, errCode);
1474 /*************************************/
1475 /* Low level usbvision access functions */
1476 /*************************************/
1479 * usbvision_read_reg()
1481 * return < 0 -> Error
1485 int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg)
1488 unsigned char buffer[1];
1490 if (!USBVISION_IS_OPERATIONAL(usbvision))
1493 errCode = usb_control_msg(usbvision->dev, usb_rcvctrlpipe(usbvision->dev, 1),
1495 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT,
1496 0, (__u16) reg, buffer, 1, HZ);
1499 err("%s: failed: error %d", __FUNCTION__, errCode);
1506 * usbvision_write_reg()
1508 * return 1 -> Reg written
1509 * 0 -> usbvision is not yet ready
1510 * -1 -> Something went wrong
1513 int usbvision_write_reg(struct usb_usbvision *usbvision, unsigned char reg,
1514 unsigned char value)
1518 if (!USBVISION_IS_OPERATIONAL(usbvision))
1521 errCode = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
1523 USB_DIR_OUT | USB_TYPE_VENDOR |
1524 USB_RECIP_ENDPOINT, 0, (__u16) reg, &value, 1, HZ);
1527 err("%s: failed: error %d", __FUNCTION__, errCode);
1533 static void usbvision_ctrlUrb_complete(struct urb *urb)
1535 struct usb_usbvision *usbvision = (struct usb_usbvision *)urb->context;
1537 PDEBUG(DBG_IRQ, "");
1538 usbvision->ctrlUrbBusy = 0;
1539 if (waitqueue_active(&usbvision->ctrlUrb_wq)) {
1540 wake_up_interruptible(&usbvision->ctrlUrb_wq);
1545 static int usbvision_write_reg_irq(struct usb_usbvision *usbvision,int address,
1546 unsigned char *data, int len)
1550 PDEBUG(DBG_IRQ, "");
1554 // down(&usbvision->ctrlUrbLock);
1555 if (usbvision->ctrlUrbBusy) {
1556 // up(&usbvision->ctrlUrbLock);
1559 usbvision->ctrlUrbBusy = 1;
1560 // up(&usbvision->ctrlUrbLock);
1562 usbvision->ctrlUrbSetup.bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT;
1563 usbvision->ctrlUrbSetup.bRequest = USBVISION_OP_CODE;
1564 usbvision->ctrlUrbSetup.wValue = 0;
1565 usbvision->ctrlUrbSetup.wIndex = cpu_to_le16(address);
1566 usbvision->ctrlUrbSetup.wLength = cpu_to_le16(len);
1567 usb_fill_control_urb (usbvision->ctrlUrb, usbvision->dev,
1568 usb_sndctrlpipe(usbvision->dev, 1),
1569 (unsigned char *)&usbvision->ctrlUrbSetup,
1570 (void *)usbvision->ctrlUrbBuffer, len,
1571 usbvision_ctrlUrb_complete,
1574 memcpy(usbvision->ctrlUrbBuffer, data, len);
1576 errCode = usb_submit_urb(usbvision->ctrlUrb, GFP_ATOMIC);
1578 // error in usb_submit_urb()
1579 usbvision->ctrlUrbBusy = 0;
1581 PDEBUG(DBG_IRQ, "submit %d byte: error %d", len, errCode);
1586 static int usbvision_init_compression(struct usb_usbvision *usbvision)
1590 usbvision->lastIsocFrameNum = -1;
1591 usbvision->isocDataCount = 0;
1592 usbvision->isocPacketCount = 0;
1593 usbvision->isocSkipCount = 0;
1594 usbvision->comprLevel = 50;
1595 usbvision->lastComprLevel = -1;
1596 usbvision->isocUrbCount = 0;
1597 usbvision->requestIntra = 1;
1598 usbvision->isocMeasureBandwidthCount = 0;
1603 /* this function measures the used bandwidth since last call
1604 * return: 0 : no error
1605 * sets usedBandwidth to 1-100 : 1-100% of full bandwidth resp. to isocPacketSize
1607 static int usbvision_measure_bandwidth (struct usb_usbvision *usbvision)
1611 if (usbvision->isocMeasureBandwidthCount < 2) { // this gives an average bandwidth of 3 frames
1612 usbvision->isocMeasureBandwidthCount++;
1615 if ((usbvision->isocPacketSize > 0) && (usbvision->isocPacketCount > 0)) {
1616 usbvision->usedBandwidth = usbvision->isocDataCount /
1617 (usbvision->isocPacketCount + usbvision->isocSkipCount) *
1618 100 / usbvision->isocPacketSize;
1620 usbvision->isocMeasureBandwidthCount = 0;
1621 usbvision->isocDataCount = 0;
1622 usbvision->isocPacketCount = 0;
1623 usbvision->isocSkipCount = 0;
1627 static int usbvision_adjust_compression (struct usb_usbvision *usbvision)
1630 unsigned char buffer[6];
1632 PDEBUG(DBG_IRQ, "");
1633 if ((adjustCompression) && (usbvision->usedBandwidth > 0)) {
1634 usbvision->comprLevel += (usbvision->usedBandwidth - 90) / 2;
1635 RESTRICT_TO_RANGE(usbvision->comprLevel, 0, 100);
1636 if (usbvision->comprLevel != usbvision->lastComprLevel) {
1638 if (usbvision->bridgeType == BRIDGE_NT1004 || usbvision->bridgeType == BRIDGE_NT1005) {
1639 buffer[0] = (unsigned char)(4 + 16 * usbvision->comprLevel / 100); // PCM Threshold 1
1640 buffer[1] = (unsigned char)(4 + 8 * usbvision->comprLevel / 100); // PCM Threshold 2
1641 distorsion = 7 + 248 * usbvision->comprLevel / 100;
1642 buffer[2] = (unsigned char)(distorsion & 0xFF); // Average distorsion Threshold (inter)
1643 buffer[3] = (unsigned char)(distorsion & 0xFF); // Average distorsion Threshold (intra)
1644 distorsion = 1 + 42 * usbvision->comprLevel / 100;
1645 buffer[4] = (unsigned char)(distorsion & 0xFF); // Maximum distorsion Threshold (inter)
1646 buffer[5] = (unsigned char)(distorsion & 0xFF); // Maximum distorsion Threshold (intra)
1648 else { //BRIDGE_NT1003
1649 buffer[0] = (unsigned char)(4 + 16 * usbvision->comprLevel / 100); // PCM threshold 1
1650 buffer[1] = (unsigned char)(4 + 8 * usbvision->comprLevel / 100); // PCM threshold 2
1651 distorsion = 2 + 253 * usbvision->comprLevel / 100;
1652 buffer[2] = (unsigned char)(distorsion & 0xFF); // distorsion threshold bit0-7
1653 buffer[3] = 0; //(unsigned char)((distorsion >> 8) & 0x0F); // distorsion threshold bit 8-11
1654 distorsion = 0 + 43 * usbvision->comprLevel / 100;
1655 buffer[4] = (unsigned char)(distorsion & 0xFF); // maximum distorsion bit0-7
1656 buffer[5] = 0; //(unsigned char)((distorsion >> 8) & 0x01); // maximum distorsion bit 8
1658 errCode = usbvision_write_reg_irq(usbvision, USBVISION_PCM_THR1, buffer, 6);
1660 PDEBUG(DBG_IRQ, "new compr params %#02x %#02x %#02x %#02x %#02x %#02x", buffer[0],
1661 buffer[1], buffer[2], buffer[3], buffer[4], buffer[5]);
1662 usbvision->lastComprLevel = usbvision->comprLevel;
1669 static int usbvision_request_intra (struct usb_usbvision *usbvision)
1672 unsigned char buffer[1];
1674 PDEBUG(DBG_IRQ, "");
1675 usbvision->requestIntra = 1;
1677 usbvision_write_reg_irq(usbvision, USBVISION_FORCE_INTRA, buffer, 1);
1681 static int usbvision_unrequest_intra (struct usb_usbvision *usbvision)
1684 unsigned char buffer[1];
1686 PDEBUG(DBG_IRQ, "");
1687 usbvision->requestIntra = 0;
1689 usbvision_write_reg_irq(usbvision, USBVISION_FORCE_INTRA, buffer, 1);
1693 /*******************************
1694 * usbvision utility functions
1695 *******************************/
1697 int usbvision_power_off(struct usb_usbvision *usbvision)
1701 PDEBUG(DBG_FUNC, "");
1703 errCode = usbvision_write_reg(usbvision, USBVISION_PWR_REG, USBVISION_SSPND_EN);
1705 usbvision->power = 0;
1707 PDEBUG(DBG_FUNC, "%s: errCode %d", (errCode!=1)?"ERROR":"power is off", errCode);
1712 * usbvision_set_video_format()
1715 static int usbvision_set_video_format(struct usb_usbvision *usbvision, int format)
1717 static const char proc[] = "usbvision_set_video_format";
1719 unsigned char value[2];
1721 if (!USBVISION_IS_OPERATIONAL(usbvision))
1724 PDEBUG(DBG_FUNC, "isocMode %#02x", format);
1726 if ((format != ISOC_MODE_YUV422)
1727 && (format != ISOC_MODE_YUV420)
1728 && (format != ISOC_MODE_COMPRESS)) {
1729 printk(KERN_ERR "usbvision: unknown video format %02x, using default YUV420",
1731 format = ISOC_MODE_YUV420;
1733 value[0] = 0x0A; //TODO: See the effect of the filter
1735 rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
1737 USB_DIR_OUT | USB_TYPE_VENDOR |
1738 USB_RECIP_ENDPOINT, 0,
1739 (__u16) USBVISION_FILT_CONT, value, 2, HZ);
1742 printk(KERN_ERR "%s: ERROR=%d. USBVISION stopped - "
1743 "reconnect or reload driver.\n", proc, rc);
1745 usbvision->isocMode = format;
1750 * usbvision_set_output()
1754 int usbvision_set_output(struct usb_usbvision *usbvision, int width,
1758 int UsbWidth, UsbHeight;
1759 unsigned int frameRate=0, frameDrop=0;
1760 unsigned char value[4];
1762 if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1766 if (width > MAX_USB_WIDTH) {
1767 UsbWidth = width / 2;
1768 usbvision->stretch_width = 2;
1772 usbvision->stretch_width = 1;
1775 if (height > MAX_USB_HEIGHT) {
1776 UsbHeight = height / 2;
1777 usbvision->stretch_height = 2;
1781 usbvision->stretch_height = 1;
1784 RESTRICT_TO_RANGE(UsbWidth, MIN_FRAME_WIDTH, MAX_USB_WIDTH);
1785 UsbWidth &= ~(MIN_FRAME_WIDTH-1);
1786 RESTRICT_TO_RANGE(UsbHeight, MIN_FRAME_HEIGHT, MAX_USB_HEIGHT);
1789 PDEBUG(DBG_FUNC, "usb %dx%d; screen %dx%d; stretch %dx%d",
1790 UsbWidth, UsbHeight, width, height,
1791 usbvision->stretch_width, usbvision->stretch_height);
1793 /* I'll not rewrite the same values */
1794 if ((UsbWidth != usbvision->curwidth) || (UsbHeight != usbvision->curheight)) {
1795 value[0] = UsbWidth & 0xff; //LSB
1796 value[1] = (UsbWidth >> 8) & 0x03; //MSB
1797 value[2] = UsbHeight & 0xff; //LSB
1798 value[3] = (UsbHeight >> 8) & 0x03; //MSB
1800 errCode = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
1802 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT,
1803 0, (__u16) USBVISION_LXSIZE_O, value, 4, HZ);
1806 err("%s failed: error %d", __FUNCTION__, errCode);
1809 usbvision->curwidth = usbvision->stretch_width * UsbWidth;
1810 usbvision->curheight = usbvision->stretch_height * UsbHeight;
1813 if (usbvision->isocMode == ISOC_MODE_YUV422) {
1814 frameRate = (usbvision->isocPacketSize * 1000) / (UsbWidth * UsbHeight * 2);
1816 else if (usbvision->isocMode == ISOC_MODE_YUV420) {
1817 frameRate = (usbvision->isocPacketSize * 1000) / ((UsbWidth * UsbHeight * 12) / 8);
1820 frameRate = FRAMERATE_MAX;
1823 if (usbvision->tvnorm->id & V4L2_STD_625_50) {
1824 frameDrop = frameRate * 32 / 25 - 1;
1826 else if (usbvision->tvnorm->id & V4L2_STD_525_60) {
1827 frameDrop = frameRate * 32 / 30 - 1;
1830 RESTRICT_TO_RANGE(frameDrop, FRAMERATE_MIN, FRAMERATE_MAX);
1832 PDEBUG(DBG_FUNC, "frameRate %d fps, frameDrop %d", frameRate, frameDrop);
1834 frameDrop = FRAMERATE_MAX; // We can allow the maximum here, because dropping is controlled
1836 /* frameDrop = 7; => framePhase = 1, 5, 9, 13, 17, 21, 25, 0, 4, 8, ...
1838 => frameRate = (7 + 1) * 25 / 32 = 200 / 32 = 6.25;
1840 frameDrop = 9; => framePhase = 1, 5, 8, 11, 14, 17, 21, 24, 27, 1, 4, 8, ...
1841 => frameSkip = 4, 3, 3, 3, 3, 4, 3, 3, 3, 3, 4, ...
1842 => frameRate = (9 + 1) * 25 / 32 = 250 / 32 = 7.8125;
1844 errCode = usbvision_write_reg(usbvision, USBVISION_FRM_RATE, frameDrop);
1850 * usbvision_frames_alloc
1851 * allocate the maximum frames this driver can manage
1853 int usbvision_frames_alloc(struct usb_usbvision *usbvision)
1857 /* Allocate memory for the frame buffers */
1858 usbvision->max_frame_size = MAX_FRAME_SIZE;
1859 usbvision->fbuf_size = USBVISION_NUMFRAMES * usbvision->max_frame_size;
1860 usbvision->fbuf = usbvision_rvmalloc(usbvision->fbuf_size);
1862 if(usbvision->fbuf == NULL) {
1863 err("%s: unable to allocate %d bytes for fbuf ",
1864 __FUNCTION__, usbvision->fbuf_size);
1867 spin_lock_init(&usbvision->queue_lock);
1868 init_waitqueue_head(&usbvision->wait_frame);
1869 init_waitqueue_head(&usbvision->wait_stream);
1871 /* Allocate all buffers */
1872 for (i = 0; i < USBVISION_NUMFRAMES; i++) {
1873 usbvision->frame[i].index = i;
1874 usbvision->frame[i].grabstate = FrameState_Unused;
1875 usbvision->frame[i].data = usbvision->fbuf +
1876 i * usbvision->max_frame_size;
1878 * Set default sizes for read operation.
1880 usbvision->stretch_width = 1;
1881 usbvision->stretch_height = 1;
1882 usbvision->frame[i].width = usbvision->curwidth;
1883 usbvision->frame[i].height = usbvision->curheight;
1884 usbvision->frame[i].bytes_read = 0;
1890 * usbvision_frames_free
1891 * frees memory allocated for the frames
1893 void usbvision_frames_free(struct usb_usbvision *usbvision)
1895 /* Have to free all that memory */
1896 if (usbvision->fbuf != NULL) {
1897 usbvision_rvfree(usbvision->fbuf, usbvision->fbuf_size);
1898 usbvision->fbuf = NULL;
1902 * usbvision_empty_framequeues()
1903 * prepare queues for incoming and outgoing frames
1905 void usbvision_empty_framequeues(struct usb_usbvision *usbvision)
1909 INIT_LIST_HEAD(&(usbvision->inqueue));
1910 INIT_LIST_HEAD(&(usbvision->outqueue));
1912 for (i = 0; i < USBVISION_NUMFRAMES; i++) {
1913 usbvision->frame[i].grabstate = FrameState_Unused;
1914 usbvision->frame[i].bytes_read = 0;
1919 * usbvision_stream_interrupt()
1922 int usbvision_stream_interrupt(struct usb_usbvision *usbvision)
1926 /* stop reading from the device */
1928 usbvision->streaming = Stream_Interrupt;
1929 ret = wait_event_timeout(usbvision->wait_stream,
1930 (usbvision->streaming == Stream_Idle),
1931 msecs_to_jiffies(USBVISION_NUMSBUF*USBVISION_URB_FRAMES));
1936 * usbvision_set_compress_params()
1940 static int usbvision_set_compress_params(struct usb_usbvision *usbvision)
1942 static const char proc[] = "usbvision_set_compresion_params: ";
1944 unsigned char value[6];
1946 value[0] = 0x0F; // Intra-Compression cycle
1947 value[1] = 0x01; // Reg.45 one line per strip
1948 value[2] = 0x00; // Reg.46 Force intra mode on all new frames
1949 value[3] = 0x00; // Reg.47 FORCE_UP <- 0 normal operation (not force)
1950 value[4] = 0xA2; // Reg.48 BUF_THR I'm not sure if this does something in not compressed mode.
1951 value[5] = 0x00; // Reg.49 DVI_YUV This has nothing to do with compression
1953 //catched values for NT1004
1954 // value[0] = 0xFF; // Never apply intra mode automatically
1955 // value[1] = 0xF1; // Use full frame height for virtual strip width; One line per strip
1956 // value[2] = 0x01; // Force intra mode on all new frames
1957 // value[3] = 0x00; // Strip size 400 Bytes; do not force up
1958 // value[4] = 0xA2; //
1959 if (!USBVISION_IS_OPERATIONAL(usbvision))
1962 rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
1964 USB_DIR_OUT | USB_TYPE_VENDOR |
1965 USB_RECIP_ENDPOINT, 0,
1966 (__u16) USBVISION_INTRA_CYC, value, 5, HZ);
1969 printk(KERN_ERR "%sERROR=%d. USBVISION stopped - "
1970 "reconnect or reload driver.\n", proc, rc);
1974 if (usbvision->bridgeType == BRIDGE_NT1004) {
1975 value[0] = 20; // PCM Threshold 1
1976 value[1] = 12; // PCM Threshold 2
1977 value[2] = 255; // Distorsion Threshold inter
1978 value[3] = 255; // Distorsion Threshold intra
1979 value[4] = 43; // Max Distorsion inter
1980 value[5] = 43; // Max Distorsion intra
1983 value[0] = 20; // PCM Threshold 1
1984 value[1] = 12; // PCM Threshold 2
1985 value[2] = 255; // Distorsion Threshold d7-d0
1986 value[3] = 0; // Distorsion Threshold d11-d8
1987 value[4] = 43; // Max Distorsion d7-d0
1988 value[5] = 0; // Max Distorsion d8
1991 if (!USBVISION_IS_OPERATIONAL(usbvision))
1994 rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
1996 USB_DIR_OUT | USB_TYPE_VENDOR |
1997 USB_RECIP_ENDPOINT, 0,
1998 (__u16) USBVISION_PCM_THR1, value, 6, HZ);
2001 printk(KERN_ERR "%sERROR=%d. USBVISION stopped - "
2002 "reconnect or reload driver.\n", proc, rc);
2012 * usbvision_set_input()
2014 * Set the input (saa711x, ...) size x y and other misc input params
2015 * I've no idea if this parameters are right
2018 int usbvision_set_input(struct usb_usbvision *usbvision)
2020 static const char proc[] = "usbvision_set_input: ";
2022 unsigned char value[8];
2023 unsigned char dvi_yuv_value;
2025 if (!USBVISION_IS_OPERATIONAL(usbvision))
2028 /* Set input format expected from decoder*/
2029 if (usbvision_device_data[usbvision->DevModel].Vin_Reg1 >= 0) {
2030 value[0] = usbvision_device_data[usbvision->DevModel].Vin_Reg1 & 0xff;
2031 } else if(usbvision_device_data[usbvision->DevModel].Codec == CODEC_SAA7113) {
2032 /* SAA7113 uses 8 bit output */
2033 value[0] = USBVISION_8_422_SYNC;
2035 /* I'm sure only about d2-d0 [010] 16 bit 4:2:2 usin sync pulses
2036 * as that is how saa7111 is configured */
2037 value[0] = USBVISION_16_422_SYNC;
2038 /* | USBVISION_VSNC_POL | USBVISION_VCLK_POL);*/
2041 rc = usbvision_write_reg(usbvision, USBVISION_VIN_REG1, value[0]);
2043 printk(KERN_ERR "%sERROR=%d. USBVISION stopped - "
2044 "reconnect or reload driver.\n", proc, rc);
2049 if (usbvision->tvnorm->id & V4L2_STD_PAL) {
2051 value[1] = 0x02; //0x02C0 -> 704 Input video line length
2053 value[3] = 0x01; //0x0120 -> 288 Input video n. of lines
2055 value[5] = 0x00; //0x0060 -> 96 Input video h offset
2057 value[7] = 0x00; //0x0016 -> 22 Input video v offset
2058 } else if (usbvision->tvnorm->id & V4L2_STD_SECAM) {
2060 value[1] = 0x02; //0x02C0 -> 704 Input video line length
2062 value[3] = 0x01; //0x0120 -> 288 Input video n. of lines
2064 value[5] = 0x00; //0x0001 -> 01 Input video h offset
2066 value[7] = 0x00; //0x0001 -> 01 Input video v offset
2067 } else { /* V4L2_STD_NTSC */
2069 value[1] = 0x02; //0x02D0 -> 720 Input video line length
2071 value[3] = 0x00; //0x00F0 -> 240 Input video number of lines
2073 value[5] = 0x00; //0x0050 -> 80 Input video h offset
2075 value[7] = 0x00; //0x0010 -> 16 Input video v offset
2078 if (usbvision_device_data[usbvision->DevModel].X_Offset >= 0) {
2079 value[4]=usbvision_device_data[usbvision->DevModel].X_Offset & 0xff;
2080 value[5]=(usbvision_device_data[usbvision->DevModel].X_Offset & 0x0300) >> 8;
2083 if (usbvision_device_data[usbvision->DevModel].Y_Offset >= 0) {
2084 value[6]=usbvision_device_data[usbvision->DevModel].Y_Offset & 0xff;
2085 value[7]=(usbvision_device_data[usbvision->DevModel].Y_Offset & 0x0300) >> 8;
2088 rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
2089 USBVISION_OP_CODE, /* USBVISION specific code */
2090 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT, 0,
2091 (__u16) USBVISION_LXSIZE_I, value, 8, HZ);
2093 printk(KERN_ERR "%sERROR=%d. USBVISION stopped - "
2094 "reconnect or reload driver.\n", proc, rc);
2099 dvi_yuv_value = 0x00; /* U comes after V, Ya comes after U/V, Yb comes after Yb */
2101 if(usbvision_device_data[usbvision->DevModel].Dvi_yuv >= 0){
2102 dvi_yuv_value = usbvision_device_data[usbvision->DevModel].Dvi_yuv & 0xff;
2104 else if(usbvision_device_data[usbvision->DevModel].Codec == CODEC_SAA7113) {
2105 /* This changes as the fine sync control changes. Further investigation necessary */
2106 dvi_yuv_value = 0x06;
2109 return (usbvision_write_reg(usbvision, USBVISION_DVI_YUV, dvi_yuv_value));
2114 * usbvision_set_dram_settings()
2116 * Set the buffer address needed by the usbvision dram to operate
2117 * This values has been taken with usbsnoop.
2121 static int usbvision_set_dram_settings(struct usb_usbvision *usbvision)
2124 unsigned char value[8];
2126 if (usbvision->isocMode == ISOC_MODE_COMPRESS) {
2135 // UR: 0x0E200-0x3FFFF = 204288 Words (1 Word = 2 Byte)
2136 // FDL: 0x00000-0x0E099 = 57498 Words
2137 // VDW: 0x0E3FF-0x3FFFF
2149 /* These are the values of the address of the video buffer,
2150 * they have to be loaded into the USBVISION_DRM_PRM1-8
2152 * Start address of video output buffer for read: drm_prm1-2 -> 0x00000
2153 * End address of video output buffer for read: drm_prm1-3 -> 0x1ffff
2154 * Start address of video frame delay buffer: drm_prm1-4 -> 0x20000
2155 * Only used in compressed mode
2156 * End address of video frame delay buffer: drm_prm1-5-6 -> 0x3ffff
2157 * Only used in compressed mode
2158 * Start address of video output buffer for write: drm_prm1-7 -> 0x00000
2159 * End address of video output buffer for write: drm_prm1-8 -> 0x1ffff
2162 if (!USBVISION_IS_OPERATIONAL(usbvision))
2165 rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
2166 USBVISION_OP_CODE, /* USBVISION specific code */
2167 USB_DIR_OUT | USB_TYPE_VENDOR |
2168 USB_RECIP_ENDPOINT, 0,
2169 (__u16) USBVISION_DRM_PRM1, value, 8, HZ);
2172 err("%sERROR=%d", __FUNCTION__, rc);
2176 /* Restart the video buffer logic */
2177 if ((rc = usbvision_write_reg(usbvision, USBVISION_DRM_CONT, USBVISION_RES_UR |
2178 USBVISION_RES_FDL | USBVISION_RES_VDW)) < 0)
2180 rc = usbvision_write_reg(usbvision, USBVISION_DRM_CONT, 0x00);
2188 * Power on the device, enables suspend-resume logic
2189 * & reset the isoc End-Point
2193 int usbvision_power_on(struct usb_usbvision *usbvision)
2197 PDEBUG(DBG_FUNC, "");
2199 usbvision_write_reg(usbvision, USBVISION_PWR_REG, USBVISION_SSPND_EN);
2200 usbvision_write_reg(usbvision, USBVISION_PWR_REG,
2201 USBVISION_SSPND_EN | USBVISION_RES2);
2202 usbvision_write_reg(usbvision, USBVISION_PWR_REG,
2203 USBVISION_SSPND_EN | USBVISION_PWR_VID);
2204 errCode = usbvision_write_reg(usbvision, USBVISION_PWR_REG,
2205 USBVISION_SSPND_EN | USBVISION_PWR_VID | USBVISION_RES2);
2207 usbvision->power = 1;
2209 PDEBUG(DBG_FUNC, "%s: errCode %d", (errCode<0)?"ERROR":"power is on", errCode);
2215 * usbvision timer stuff
2218 // to call usbvision_power_off from task queue
2219 static void call_usbvision_power_off(struct work_struct *work)
2221 struct usb_usbvision *usbvision = container_of(work, struct usb_usbvision, powerOffWork);
2223 PDEBUG(DBG_FUNC, "");
2224 down_interruptible(&usbvision->lock);
2225 if(usbvision->user == 0) {
2226 usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
2228 usbvision_power_off(usbvision);
2229 usbvision->initialized = 0;
2231 up(&usbvision->lock);
2234 static void usbvision_powerOffTimer(unsigned long data)
2236 struct usb_usbvision *usbvision = (void *) data;
2238 PDEBUG(DBG_FUNC, "");
2239 del_timer(&usbvision->powerOffTimer);
2240 INIT_WORK(&usbvision->powerOffWork, call_usbvision_power_off);
2241 (void) schedule_work(&usbvision->powerOffWork);
2245 void usbvision_init_powerOffTimer(struct usb_usbvision *usbvision)
2247 init_timer(&usbvision->powerOffTimer);
2248 usbvision->powerOffTimer.data = (long) usbvision;
2249 usbvision->powerOffTimer.function = usbvision_powerOffTimer;
2252 void usbvision_set_powerOffTimer(struct usb_usbvision *usbvision)
2254 mod_timer(&usbvision->powerOffTimer, jiffies + USBVISION_POWEROFF_TIME);
2257 void usbvision_reset_powerOffTimer(struct usb_usbvision *usbvision)
2259 if (timer_pending(&usbvision->powerOffTimer)) {
2260 del_timer(&usbvision->powerOffTimer);
2265 * usbvision_begin_streaming()
2266 * Sure you have to put bit 7 to 0, if not incoming frames are droped, but no
2267 * idea about the rest
2269 int usbvision_begin_streaming(struct usb_usbvision *usbvision)
2273 if (usbvision->isocMode == ISOC_MODE_COMPRESS) {
2274 usbvision_init_compression(usbvision);
2276 errCode = usbvision_write_reg(usbvision, USBVISION_VIN_REG2, USBVISION_NOHVALID |
2277 usbvision->Vin_Reg2_Preset);
2282 * usbvision_restart_isoc()
2283 * Not sure yet if touching here PWR_REG make loose the config
2286 int usbvision_restart_isoc(struct usb_usbvision *usbvision)
2292 usbvision_write_reg(usbvision, USBVISION_PWR_REG,
2293 USBVISION_SSPND_EN | USBVISION_PWR_VID)) < 0)
2297 usbvision_write_reg(usbvision, USBVISION_PWR_REG,
2298 USBVISION_SSPND_EN | USBVISION_PWR_VID |
2299 USBVISION_RES2)) < 0)
2303 usbvision_write_reg(usbvision, USBVISION_VIN_REG2,
2304 USBVISION_KEEP_BLANK | USBVISION_NOHVALID |
2305 usbvision->Vin_Reg2_Preset)) < 0) return ret;
2307 /* TODO: schedule timeout */
2308 while ((usbvision_read_reg(usbvision, USBVISION_STATUS_REG) && 0x01) != 1);
2313 int usbvision_audio_off(struct usb_usbvision *usbvision)
2315 if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, USBVISION_AUDIO_MUTE) < 0) {
2316 printk(KERN_ERR "usbvision_audio_off: can't wirte reg\n");
2319 usbvision->AudioMute = 0;
2320 usbvision->AudioChannel = USBVISION_AUDIO_MUTE;
2324 int usbvision_set_audio(struct usb_usbvision *usbvision, int AudioChannel)
2326 if (!usbvision->AudioMute) {
2327 if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, AudioChannel) < 0) {
2328 printk(KERN_ERR "usbvision_set_audio: can't write iopin register for audio switching\n");
2332 usbvision->AudioChannel = AudioChannel;
2336 int usbvision_setup(struct usb_usbvision *usbvision,int format)
2338 usbvision_set_video_format(usbvision, format);
2339 usbvision_set_dram_settings(usbvision);
2340 usbvision_set_compress_params(usbvision);
2341 usbvision_set_input(usbvision);
2342 usbvision_set_output(usbvision, MAX_USB_WIDTH, MAX_USB_HEIGHT);
2343 usbvision_restart_isoc(usbvision);
2346 return USBVISION_IS_OPERATIONAL(usbvision);
2350 int usbvision_sbuf_alloc(struct usb_usbvision *usbvision)
2353 const int sb_size = USBVISION_URB_FRAMES * USBVISION_MAX_ISOC_PACKET_SIZE;
2355 /* Clean pointers so we know if we allocated something */
2356 for (i = 0; i < USBVISION_NUMSBUF; i++)
2357 usbvision->sbuf[i].data = NULL;
2359 for (i = 0; i < USBVISION_NUMSBUF; i++) {
2360 usbvision->sbuf[i].data = kzalloc(sb_size, GFP_KERNEL);
2361 if (usbvision->sbuf[i].data == NULL) {
2362 err("%s: unable to allocate %d bytes for sbuf", __FUNCTION__, sb_size);
2371 void usbvision_sbuf_free(struct usb_usbvision *usbvision)
2375 for (i = 0; i < USBVISION_NUMSBUF; i++) {
2376 if (usbvision->sbuf[i].data != NULL) {
2377 kfree(usbvision->sbuf[i].data);
2378 usbvision->sbuf[i].data = NULL;
2384 * usbvision_init_isoc()
2387 int usbvision_init_isoc(struct usb_usbvision *usbvision)
2389 struct usb_device *dev = usbvision->dev;
2390 int bufIdx, errCode, regValue;
2392 if (!USBVISION_IS_OPERATIONAL(usbvision))
2395 usbvision->curFrame = NULL;
2396 scratch_reset(usbvision);
2398 /* Alternate interface 1 is is the biggest frame size */
2399 errCode = usb_set_interface(dev, usbvision->iface, usbvision->ifaceAltActive);
2401 usbvision->last_error = errCode;
2405 regValue = (16 - usbvision_read_reg(usbvision, USBVISION_ALTER_REG)) & 0x0F;
2406 usbvision->isocPacketSize = (regValue == 0) ? 0 : (regValue * 64) - 1;
2407 PDEBUG(DBG_ISOC, "ISO Packet Length:%d", usbvision->isocPacketSize);
2409 usbvision->usb_bandwidth = regValue >> 1;
2410 PDEBUG(DBG_ISOC, "USB Bandwidth Usage: %dMbit/Sec", usbvision->usb_bandwidth);
2414 /* We double buffer the Iso lists */
2416 for (bufIdx = 0; bufIdx < USBVISION_NUMSBUF; bufIdx++) {
2420 urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
2422 err("%s: usb_alloc_urb() failed", __FUNCTION__);
2425 usbvision->sbuf[bufIdx].urb = urb;
2427 urb->context = usbvision;
2428 urb->pipe = usb_rcvisocpipe(dev, usbvision->video_endp);
2429 urb->transfer_flags = URB_ISO_ASAP;
2431 urb->transfer_buffer = usbvision->sbuf[bufIdx].data;
2432 urb->complete = usbvision_isocIrq;
2433 urb->number_of_packets = USBVISION_URB_FRAMES;
2434 urb->transfer_buffer_length =
2435 usbvision->isocPacketSize * USBVISION_URB_FRAMES;
2436 for (j = k = 0; j < USBVISION_URB_FRAMES; j++,
2437 k += usbvision->isocPacketSize) {
2438 urb->iso_frame_desc[j].offset = k;
2439 urb->iso_frame_desc[j].length = usbvision->isocPacketSize;
2444 /* Submit all URBs */
2445 for (bufIdx = 0; bufIdx < USBVISION_NUMSBUF; bufIdx++) {
2446 errCode = usb_submit_urb(usbvision->sbuf[bufIdx].urb, GFP_KERNEL);
2448 err("%s: usb_submit_urb(%d) failed: error %d", __FUNCTION__, bufIdx, errCode);
2452 usbvision->streaming = Stream_Idle;
2453 PDEBUG(DBG_ISOC, "%s: streaming=1 usbvision->video_endp=$%02x", __FUNCTION__, usbvision->video_endp);
2458 * usbvision_stop_isoc()
2460 * This procedure stops streaming and deallocates URBs. Then it
2461 * activates zero-bandwidth alt. setting of the video interface.
2464 void usbvision_stop_isoc(struct usb_usbvision *usbvision)
2466 int bufIdx, errCode, regValue;
2468 if ((usbvision->streaming == Stream_Off) || (usbvision->dev == NULL))
2471 /* Unschedule all of the iso td's */
2472 for (bufIdx = 0; bufIdx < USBVISION_NUMSBUF; bufIdx++) {
2473 usb_kill_urb(usbvision->sbuf[bufIdx].urb);
2474 usb_free_urb(usbvision->sbuf[bufIdx].urb);
2475 usbvision->sbuf[bufIdx].urb = NULL;
2479 PDEBUG(DBG_ISOC, "%s: streaming=Stream_Off\n", __FUNCTION__);
2480 usbvision->streaming = Stream_Off;
2482 if (!usbvision->remove_pending) {
2484 /* Set packet size to 0 */
2485 errCode = usb_set_interface(usbvision->dev, usbvision->iface,
2486 usbvision->ifaceAltInactive);
2488 err("%s: usb_set_interface() failed: error %d", __FUNCTION__, errCode);
2489 usbvision->last_error = errCode;
2491 regValue = (16 - usbvision_read_reg(usbvision, USBVISION_ALTER_REG)) & 0x0F;
2492 usbvision->isocPacketSize = (regValue == 0) ? 0 : (regValue * 64) - 1;
2493 PDEBUG(DBG_ISOC, "ISO Packet Length:%d", usbvision->isocPacketSize);
2495 usbvision->usb_bandwidth = regValue >> 1;
2496 PDEBUG(DBG_ISOC, "USB Bandwidth Usage: %dMbit/Sec", usbvision->usb_bandwidth);
2500 int usbvision_muxsel(struct usb_usbvision *usbvision, int channel)
2503 int audio[]= {1, 0, 0, 0};
2504 struct v4l2_routing route;
2505 //channel 0 is TV with audiochannel 1 (tuner mono)
2506 //channel 1 is Composite with audio channel 0 (line in)
2507 //channel 2 is S-Video with audio channel 0 (line in)
2508 //channel 3 is additional video inputs to the device with audio channel 0 (line in)
2510 RESTRICT_TO_RANGE(channel, 0, usbvision->video_inputs);
2511 usbvision->ctl_input = channel;
2512 route.input = SAA7115_COMPOSITE1;
2513 call_i2c_clients(usbvision, VIDIOC_INT_S_VIDEO_ROUTING,&route);
2514 call_i2c_clients(usbvision, VIDIOC_S_INPUT, &usbvision->ctl_input);
2516 // set the new channel
2517 // Regular USB TV Tuners -> channel: 0 = Television, 1 = Composite, 2 = S-Video
2518 // Four video input devices -> channel: 0 = Chan White, 1 = Chan Green, 2 = Chan Yellow, 3 = Chan Red
2520 switch (usbvision_device_data[usbvision->DevModel].Codec) {
2522 if (SwitchSVideoInput) { // To handle problems with S-Video Input for some devices. Use SwitchSVideoInput parameter when loading the module.
2528 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
2529 mode[0] = 0; mode[1] = 2; mode[3] = 3; // Special for four input devices
2532 mode[0] = 0; mode[1] = 2; //modes for regular saa7113 devices
2536 mode[0] = 0; mode[1] = 1; mode[2] = 7; //modes for saa7111
2539 mode[0] = 0; mode[1] = 1; mode[2] = 7; //default modes
2541 route.input = mode[channel];
2542 call_i2c_clients(usbvision, VIDIOC_INT_S_VIDEO_ROUTING,&route);
2543 usbvision->channel = channel;
2544 usbvision_set_audio(usbvision, audio[channel]);
2549 * Overrides for Emacs so that we follow Linus's tabbing style.
2550 * ---------------------------------------------------------------------------