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
91 static const int max_imgwidth = MAX_FRAME_WIDTH;
92 static const int max_imgheight = MAX_FRAME_HEIGHT;
93 static const int min_imgwidth = MIN_FRAME_WIDTH;
94 static const int min_imgheight = MIN_FRAME_HEIGHT;
96 /* The value of 'scratch_buf_size' affects quality of the picture
97 * in many ways. Shorter buffers may cause loss of data when client
98 * is too slow. Larger buffers are memory-consuming and take longer
99 * to work with. This setting can be adjusted, but the default value
100 * should be OK for most desktop users.
102 #define DEFAULT_SCRATCH_BUF_SIZE (0x20000) // 128kB memory scratch buffer
103 static const int scratch_buf_size = DEFAULT_SCRATCH_BUF_SIZE;
105 // Function prototypes
106 static int usbvision_request_intra (struct usb_usbvision *usbvision);
107 static int usbvision_unrequest_intra (struct usb_usbvision *usbvision);
108 static int usbvision_adjust_compression (struct usb_usbvision *usbvision);
109 static int usbvision_measure_bandwidth (struct usb_usbvision *usbvision);
111 /*******************************/
112 /* Memory management functions */
113 /*******************************/
116 * Here we want the physical address of the memory.
117 * This is used when initializing the contents of the area.
120 void *usbvision_rvmalloc(unsigned long size)
125 size = PAGE_ALIGN(size);
126 mem = vmalloc_32(size);
130 memset(mem, 0, size); /* Clear the ram out, no junk to the user */
131 adr = (unsigned long) mem;
133 SetPageReserved(vmalloc_to_page((void *)adr));
141 void usbvision_rvfree(void *mem, unsigned long size)
148 size = PAGE_ALIGN(size);
150 adr = (unsigned long) mem;
151 while ((long) size > 0) {
152 ClearPageReserved(vmalloc_to_page((void *)adr));
163 static void usbvision_hexdump(const unsigned char *data, int len)
168 for (i = k = 0; len > 0; i++, len--) {
169 if (i > 0 && (i % 16 == 0)) {
173 k += sprintf(&tmp[k], "%02x ", data[i]);
180 /********************************
181 * scratch ring buffer handling
182 ********************************/
183 int scratch_len(struct usb_usbvision *usbvision) /*This returns the amount of data actually in the buffer */
185 int len = usbvision->scratch_write_ptr - usbvision->scratch_read_ptr;
187 len += scratch_buf_size;
189 PDEBUG(DBG_SCRATCH, "scratch_len() = %d\n", len);
195 /* This returns the free space left in the buffer */
196 int scratch_free(struct usb_usbvision *usbvision)
198 int free = usbvision->scratch_read_ptr - usbvision->scratch_write_ptr;
200 free += scratch_buf_size;
203 free -= 1; /* at least one byte in the buffer must */
204 /* left blank, otherwise there is no chance to differ between full and empty */
206 PDEBUG(DBG_SCRATCH, "return %d\n", free);
212 /* This puts data into the buffer */
213 int scratch_put(struct usb_usbvision *usbvision, unsigned char *data, int len)
217 if (usbvision->scratch_write_ptr + len < scratch_buf_size) {
218 memcpy(usbvision->scratch + usbvision->scratch_write_ptr, data, len);
219 usbvision->scratch_write_ptr += len;
222 len_part = scratch_buf_size - usbvision->scratch_write_ptr;
223 memcpy(usbvision->scratch + usbvision->scratch_write_ptr, data, len_part);
224 if (len == len_part) {
225 usbvision->scratch_write_ptr = 0; /* just set write_ptr to zero */
228 memcpy(usbvision->scratch, data + len_part, len - len_part);
229 usbvision->scratch_write_ptr = len - len_part;
233 PDEBUG(DBG_SCRATCH, "len=%d, new write_ptr=%d\n", len, usbvision->scratch_write_ptr);
238 /* This marks the write_ptr as position of new frame header */
239 void scratch_mark_header(struct usb_usbvision *usbvision)
241 PDEBUG(DBG_SCRATCH, "header at write_ptr=%d\n", usbvision->scratch_headermarker_write_ptr);
243 usbvision->scratch_headermarker[usbvision->scratch_headermarker_write_ptr] =
244 usbvision->scratch_write_ptr;
245 usbvision->scratch_headermarker_write_ptr += 1;
246 usbvision->scratch_headermarker_write_ptr %= USBVISION_NUM_HEADERMARKER;
249 /* This gets data from the buffer at the given "ptr" position */
250 int scratch_get_extra(struct usb_usbvision *usbvision, unsigned char *data, int *ptr, int len)
253 if (*ptr + len < scratch_buf_size) {
254 memcpy(data, usbvision->scratch + *ptr, len);
258 len_part = scratch_buf_size - *ptr;
259 memcpy(data, usbvision->scratch + *ptr, len_part);
260 if (len == len_part) {
261 *ptr = 0; /* just set the y_ptr to zero */
264 memcpy(data + len_part, usbvision->scratch, len - len_part);
265 *ptr = len - len_part;
269 PDEBUG(DBG_SCRATCH, "len=%d, new ptr=%d\n", len, *ptr);
275 /* This sets the scratch extra read pointer */
276 void scratch_set_extra_ptr(struct usb_usbvision *usbvision, int *ptr, int len)
278 *ptr = (usbvision->scratch_read_ptr + len)%scratch_buf_size;
280 PDEBUG(DBG_SCRATCH, "ptr=%d\n", *ptr);
284 /*This increments the scratch extra read pointer */
285 void scratch_inc_extra_ptr(int *ptr, int len)
287 *ptr = (*ptr + len) % scratch_buf_size;
289 PDEBUG(DBG_SCRATCH, "ptr=%d\n", *ptr);
293 /* This gets data from the buffer */
294 int scratch_get(struct usb_usbvision *usbvision, unsigned char *data, int len)
297 if (usbvision->scratch_read_ptr + len < scratch_buf_size) {
298 memcpy(data, usbvision->scratch + usbvision->scratch_read_ptr, len);
299 usbvision->scratch_read_ptr += len;
302 len_part = scratch_buf_size - usbvision->scratch_read_ptr;
303 memcpy(data, usbvision->scratch + usbvision->scratch_read_ptr, len_part);
304 if (len == len_part) {
305 usbvision->scratch_read_ptr = 0; /* just set the read_ptr to zero */
308 memcpy(data + len_part, usbvision->scratch, len - len_part);
309 usbvision->scratch_read_ptr = len - len_part;
313 PDEBUG(DBG_SCRATCH, "len=%d, new read_ptr=%d\n", len, usbvision->scratch_read_ptr);
319 /* This sets read pointer to next header and returns it */
320 int scratch_get_header(struct usb_usbvision *usbvision,struct usbvision_frame_header *header)
324 PDEBUG(DBG_SCRATCH, "from read_ptr=%d", usbvision->scratch_headermarker_read_ptr);
326 while (usbvision->scratch_headermarker_write_ptr -
327 usbvision->scratch_headermarker_read_ptr != 0) {
328 usbvision->scratch_read_ptr =
329 usbvision->scratch_headermarker[usbvision->scratch_headermarker_read_ptr];
330 usbvision->scratch_headermarker_read_ptr += 1;
331 usbvision->scratch_headermarker_read_ptr %= USBVISION_NUM_HEADERMARKER;
332 scratch_get(usbvision, (unsigned char *)header, USBVISION_HEADER_LENGTH);
333 if ((header->magic_1 == USBVISION_MAGIC_1)
334 && (header->magic_2 == USBVISION_MAGIC_2)
335 && (header->headerLength == USBVISION_HEADER_LENGTH)) {
336 errCode = USBVISION_HEADER_LENGTH;
337 header->frameWidth = header->frameWidthLo + (header->frameWidthHi << 8);
338 header->frameHeight = header->frameHeightLo + (header->frameHeightHi << 8);
347 /*This removes len bytes of old data from the buffer */
348 void scratch_rm_old(struct usb_usbvision *usbvision, int len)
351 usbvision->scratch_read_ptr += len;
352 usbvision->scratch_read_ptr %= scratch_buf_size;
353 PDEBUG(DBG_SCRATCH, "read_ptr is now %d\n", usbvision->scratch_read_ptr);
357 /*This resets the buffer - kills all data in it too */
358 void scratch_reset(struct usb_usbvision *usbvision)
360 PDEBUG(DBG_SCRATCH, "\n");
362 usbvision->scratch_read_ptr = 0;
363 usbvision->scratch_write_ptr = 0;
364 usbvision->scratch_headermarker_read_ptr = 0;
365 usbvision->scratch_headermarker_write_ptr = 0;
366 usbvision->isocstate = IsocState_NoFrame;
369 int usbvision_scratch_alloc(struct usb_usbvision *usbvision)
371 usbvision->scratch = vmalloc(scratch_buf_size);
372 scratch_reset(usbvision);
373 if(usbvision->scratch == NULL) {
374 err("%s: unable to allocate %d bytes for scratch",
375 __FUNCTION__, scratch_buf_size);
381 void usbvision_scratch_free(struct usb_usbvision *usbvision)
383 if (usbvision->scratch != NULL) {
384 vfree(usbvision->scratch);
385 usbvision->scratch = NULL;
390 * usbvision_testpattern()
392 * Procedure forms a test pattern (yellow grid on blue background).
395 * fullframe: if TRUE then entire frame is filled, otherwise the procedure
396 * continues from the current scanline.
397 * pmode 0: fill the frame with solid blue color (like on VCR or TV)
398 * 1: Draw a colored grid
401 void usbvision_testpattern(struct usb_usbvision *usbvision, int fullframe,
404 static const char proc[] = "usbvision_testpattern";
405 struct usbvision_frame *frame;
409 static int num_pass = 0;
411 if (usbvision == NULL) {
412 printk(KERN_ERR "%s: usbvision == NULL\n", proc);
415 if (usbvision->curFrame == NULL) {
416 printk(KERN_ERR "%s: usbvision->curFrame is NULL.\n", proc);
420 /* Grab the current frame */
421 frame = usbvision->curFrame;
423 /* Optionally start at the beginning */
426 frame->scanlength = 0;
429 /* Form every scan line */
430 for (; frame->curline < frame->frmheight; frame->curline++) {
433 f = frame->data + (usbvision->curwidth * 3 * frame->curline);
434 for (i = 0; i < usbvision->curwidth; i++) {
435 unsigned char cb = 0x80;
436 unsigned char cg = 0;
437 unsigned char cr = 0;
440 if (frame->curline % 32 == 0)
441 cb = 0, cg = cr = 0xFF;
442 else if (i % 32 == 0) {
443 if (frame->curline % 32 == 1)
445 cb = 0, cg = cr = 0xFF;
452 num_pass * 2) & 0xFF;
455 num_pass * 3) & 0xFF;
458 /* Just the blue screen */
468 frame->grabstate = FrameState_Done;
469 frame->scanlength += scan_length;
475 * usbvision_decompress_alloc()
477 * allocates intermediate buffer for decompression
479 int usbvision_decompress_alloc(struct usb_usbvision *usbvision)
481 int IFB_size = MAX_FRAME_WIDTH * MAX_FRAME_HEIGHT * 3 / 2;
482 usbvision->IntraFrameBuffer = vmalloc(IFB_size);
483 if (usbvision->IntraFrameBuffer == NULL) {
484 err("%s: unable to allocate %d for compr. frame buffer", __FUNCTION__, IFB_size);
491 * usbvision_decompress_free()
493 * frees intermediate buffer for decompression
495 void usbvision_decompress_free(struct usb_usbvision *usbvision)
497 if (usbvision->IntraFrameBuffer != NULL) {
498 vfree(usbvision->IntraFrameBuffer);
499 usbvision->IntraFrameBuffer = NULL;
503 /************************************************************
504 * Here comes the data parsing stuff that is run as interrupt
505 ************************************************************/
507 * usbvision_find_header()
509 * Locate one of supported header markers in the scratch buffer.
511 static enum ParseState usbvision_find_header(struct usb_usbvision *usbvision)
513 struct usbvision_frame *frame;
516 frame = usbvision->curFrame;
518 while (scratch_get_header(usbvision, &frame->isocHeader) == USBVISION_HEADER_LENGTH) {
519 // found header in scratch
520 PDEBUG(DBG_HEADER, "found header: 0x%02x%02x %d %d %d %d %#x 0x%02x %u %u",
521 frame->isocHeader.magic_2,
522 frame->isocHeader.magic_1,
523 frame->isocHeader.headerLength,
524 frame->isocHeader.frameNum,
525 frame->isocHeader.framePhase,
526 frame->isocHeader.frameLatency,
527 frame->isocHeader.dataFormat,
528 frame->isocHeader.formatParam,
529 frame->isocHeader.frameWidth,
530 frame->isocHeader.frameHeight);
532 if (usbvision->requestIntra) {
533 if (frame->isocHeader.formatParam & 0x80) {
535 usbvision->lastIsocFrameNum = -1; // do not check for lost frames this time
536 usbvision_unrequest_intra(usbvision);
547 frame->frmwidth = frame->isocHeader.frameWidth * usbvision->stretch_width;
548 frame->frmheight = frame->isocHeader.frameHeight * usbvision->stretch_height;
549 frame->v4l2_linesize = (frame->frmwidth * frame->v4l2_format.depth)>> 3;
551 else { // no header found
552 PDEBUG(DBG_HEADER, "skipping scratch data, no header");
553 scratch_reset(usbvision);
554 return ParseState_EndParse;
558 if (frame->isocHeader.dataFormat==ISOC_MODE_COMPRESS) {
559 //check isocHeader.frameNum for lost frames
560 if (usbvision->lastIsocFrameNum >= 0) {
561 if (((usbvision->lastIsocFrameNum + 1) % 32) != frame->isocHeader.frameNum) {
562 // unexpected frame drop: need to request new intra frame
563 PDEBUG(DBG_HEADER, "Lost frame before %d on USB", frame->isocHeader.frameNum);
564 usbvision_request_intra(usbvision);
565 return ParseState_NextFrame;
568 usbvision->lastIsocFrameNum = frame->isocHeader.frameNum;
570 usbvision->header_count++;
571 frame->scanstate = ScanState_Lines;
574 if (force_testpattern) {
575 usbvision_testpattern(usbvision, 1, 1);
576 return ParseState_NextFrame;
578 return ParseState_Continue;
581 static enum ParseState usbvision_parse_lines_422(struct usb_usbvision *usbvision,
584 volatile struct usbvision_frame *frame;
588 unsigned char yuyv[4]={180, 128, 10, 128}; // YUV components
589 unsigned char rv, gv, bv; // RGB components
590 int clipmask_index, bytes_per_pixel;
591 int stretch_bytes, clipmask_add;
593 frame = usbvision->curFrame;
594 f = frame->data + (frame->v4l2_linesize * frame->curline);
596 /* Make sure there's enough data for the entire line */
597 len = (frame->isocHeader.frameWidth * 2)+5;
598 if (scratch_len(usbvision) < len) {
599 PDEBUG(DBG_PARSE, "out of data in line %d, need %u.\n", frame->curline, len);
600 return ParseState_Out;
603 if ((frame->curline + 1) >= frame->frmheight) {
604 return ParseState_NextFrame;
607 bytes_per_pixel = frame->v4l2_format.bytes_per_pixel;
608 stretch_bytes = (usbvision->stretch_width - 1) * bytes_per_pixel;
609 clipmask_index = frame->curline * MAX_FRAME_WIDTH;
610 clipmask_add = usbvision->stretch_width;
612 for (i = 0; i < frame->frmwidth; i+=(2 * usbvision->stretch_width)) {
614 scratch_get(usbvision, &yuyv[0], 4);
616 if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
622 YUV_TO_RGB_BY_THE_BOOK(yuyv[0], yuyv[1], yuyv[3], rv, gv, bv);
623 switch (frame->v4l2_format.format) {
624 case V4L2_PIX_FMT_RGB565:
625 *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 3));
626 *f++ = (0x07 & (gv >> 5)) | (0xF8 & rv);
628 case V4L2_PIX_FMT_RGB24:
633 case V4L2_PIX_FMT_RGB32:
639 case V4L2_PIX_FMT_RGB555:
640 *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 2));
641 *f++ = (0x03 & (gv >> 6)) | (0x7C & (rv >> 1));
645 clipmask_index += clipmask_add;
648 if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
654 YUV_TO_RGB_BY_THE_BOOK(yuyv[2], yuyv[1], yuyv[3], rv, gv, bv);
655 switch (frame->v4l2_format.format) {
656 case V4L2_PIX_FMT_RGB565:
657 *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 3));
658 *f++ = (0x07 & (gv >> 5)) | (0xF8 & rv);
660 case V4L2_PIX_FMT_RGB24:
665 case V4L2_PIX_FMT_RGB32:
671 case V4L2_PIX_FMT_RGB555:
672 *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 2));
673 *f++ = (0x03 & (gv >> 6)) | (0x7C & (rv >> 1));
677 clipmask_index += clipmask_add;
681 frame->curline += usbvision->stretch_height;
682 *pcopylen += frame->v4l2_linesize * usbvision->stretch_height;
684 if (frame->curline >= frame->frmheight) {
685 return ParseState_NextFrame;
688 return ParseState_Continue;
692 /* The decompression routine */
693 static int usbvision_decompress(struct usb_usbvision *usbvision,unsigned char *Compressed,
694 unsigned char *Decompressed, int *StartPos,
695 int *BlockTypeStartPos, int Len)
697 int RestPixel, Idx, MaxPos, Pos, ExtraPos, BlockLen, BlockTypePos, BlockTypeLen;
698 unsigned char BlockByte, BlockCode, BlockType, BlockTypeByte, Integrator;
702 BlockTypePos = *BlockTypeStartPos;
703 MaxPos = 396; //Pos + Len;
713 for (Idx = 0; Idx < Len; Idx++) {
716 if (BlockTypeLen==0) {
717 BlockTypeByte = Compressed[BlockTypePos];
721 BlockType = (BlockTypeByte & 0xC0) >> 6;
724 usbvision->ComprBlockTypes[BlockType]++;
727 if (BlockType == 0) {
728 if(RestPixel >= 24) {
731 Integrator = Decompressed[Idx];
733 Idx += RestPixel - 1;
737 BlockCode = Compressed[Pos];
739 if (RestPixel >= 24) {
742 BlockLen = RestPixel;
744 RestPixel -= BlockLen;
745 ExtraPos = Pos + (BlockLen / 4);
751 if ((BlockLen%4) == 0) {
752 BlockByte = Compressed[Pos];
755 if (BlockType == 1) { //inter Block
756 Integrator = Decompressed[Idx];
758 switch (BlockByte & 0xC0) {
760 Integrator += Compressed[ExtraPos];
764 Integrator += BlockCode;
767 Integrator -= BlockCode;
770 Decompressed[Idx] = Integrator;
775 *StartPos = ExtraPos;
776 *BlockTypeStartPos = BlockTypePos;
782 * usbvision_parse_compress()
784 * Parse compressed frame from the scratch buffer, put
785 * decoded RGB value into the current frame buffer and add the written
786 * number of bytes (RGB) to the *pcopylen.
789 static enum ParseState usbvision_parse_compress(struct usb_usbvision *usbvision,
792 #define USBVISION_STRIP_MAGIC 0x5A
793 #define USBVISION_STRIP_LEN_MAX 400
794 #define USBVISION_STRIP_HEADER_LEN 3
796 struct usbvision_frame *frame;
797 unsigned char *f,*u = NULL ,*v = NULL;
798 unsigned char StripData[USBVISION_STRIP_LEN_MAX];
799 unsigned char StripHeader[USBVISION_STRIP_HEADER_LEN];
800 int Idx, IdxEnd, StripLen, StripPtr, StartBlockPos, BlockPos, BlockTypePos;
801 int clipmask_index, bytes_per_pixel, rc;
803 unsigned char rv, gv, bv;
804 static unsigned char *Y, *U, *V;
806 frame = usbvision->curFrame;
807 imageSize = frame->frmwidth * frame->frmheight;
808 if ( (frame->v4l2_format.format == V4L2_PIX_FMT_YUV422P) ||
809 (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420) ) { // this is a planar format
810 //... v4l2_linesize not used here.
811 f = frame->data + (frame->width * frame->curline);
813 f = frame->data + (frame->v4l2_linesize * frame->curline);
815 if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV){ //initialise u and v pointers
816 // get base of u and b planes add halfoffset
820 + (frame->frmwidth >>1) * frame->curline ;
821 v = u + (imageSize >>1 );
823 } else if (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420){
825 v = frame->data + imageSize + ((frame->curline* (frame->width))>>2) ;
826 u = v + (imageSize >>2) ;
829 if (frame->curline == 0) {
830 usbvision_adjust_compression(usbvision);
833 if (scratch_len(usbvision) < USBVISION_STRIP_HEADER_LEN) {
834 return ParseState_Out;
837 //get strip header without changing the scratch_read_ptr
838 scratch_set_extra_ptr(usbvision, &StripPtr, 0);
839 scratch_get_extra(usbvision, &StripHeader[0], &StripPtr,
840 USBVISION_STRIP_HEADER_LEN);
842 if (StripHeader[0] != USBVISION_STRIP_MAGIC) {
844 usbvision->stripMagicErrors++;
845 return ParseState_NextFrame;
848 if (frame->curline != (int)StripHeader[2]) {
849 //line number missmatch error
850 usbvision->stripLineNumberErrors++;
853 StripLen = 2 * (unsigned int)StripHeader[1];
854 if (StripLen > USBVISION_STRIP_LEN_MAX) {
856 // I think this never happens
857 usbvision_request_intra(usbvision);
860 if (scratch_len(usbvision) < StripLen) {
861 //there is not enough data for the strip
862 return ParseState_Out;
865 if (usbvision->IntraFrameBuffer) {
866 Y = usbvision->IntraFrameBuffer + frame->frmwidth * frame->curline;
867 U = usbvision->IntraFrameBuffer + imageSize + (frame->frmwidth / 2) * (frame->curline / 2);
868 V = usbvision->IntraFrameBuffer + imageSize / 4 * 5 + (frame->frmwidth / 2) * (frame->curline / 2);
871 return ParseState_NextFrame;
874 bytes_per_pixel = frame->v4l2_format.bytes_per_pixel;
875 clipmask_index = frame->curline * MAX_FRAME_WIDTH;
877 scratch_get(usbvision, StripData, StripLen);
879 IdxEnd = frame->frmwidth;
880 BlockTypePos = USBVISION_STRIP_HEADER_LEN;
881 StartBlockPos = BlockTypePos + (IdxEnd - 1) / 96 + (IdxEnd / 2 - 1) / 96 + 2;
882 BlockPos = StartBlockPos;
884 usbvision->BlockPos = BlockPos;
886 if ((rc = usbvision_decompress(usbvision, StripData, Y, &BlockPos, &BlockTypePos, IdxEnd)) != IdxEnd) {
887 //return ParseState_Continue;
889 if (StripLen > usbvision->maxStripLen) {
890 usbvision->maxStripLen = StripLen;
893 if (frame->curline%2) {
894 if ((rc = usbvision_decompress(usbvision, StripData, V, &BlockPos, &BlockTypePos, IdxEnd/2)) != IdxEnd/2) {
895 //return ParseState_Continue;
899 if ((rc = usbvision_decompress(usbvision, StripData, U, &BlockPos, &BlockTypePos, IdxEnd/2)) != IdxEnd/2) {
900 //return ParseState_Continue;
904 if (BlockPos > usbvision->comprBlockPos) {
905 usbvision->comprBlockPos = BlockPos;
907 if (BlockPos > StripLen) {
908 usbvision->stripLenErrors++;
911 for (Idx = 0; Idx < IdxEnd; Idx++) {
912 if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
914 *f++ = Idx & 0x01 ? U[Idx/2] : V[Idx/2];
916 else if(frame->v4l2_format.format == V4L2_PIX_FMT_YUV422P) {
923 else if (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420) {
925 if ( !(( Idx & 0x01 ) | ( frame->curline & 0x01 )) ){
927 /* only need do this for 1 in 4 pixels */
928 /* intraframe buffer is YUV420 format */
936 YUV_TO_RGB_BY_THE_BOOK(Y[Idx], U[Idx/2], V[Idx/2], rv, gv, bv);
937 switch (frame->v4l2_format.format) {
938 case V4L2_PIX_FMT_GREY:
941 case V4L2_PIX_FMT_RGB555:
942 *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 2));
943 *f++ = (0x03 & (gv >> 6)) | (0x7C & (rv >> 1));
945 case V4L2_PIX_FMT_RGB565:
946 *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 3));
947 *f++ = (0x07 & (gv >> 5)) | (0xF8 & rv);
949 case V4L2_PIX_FMT_RGB24:
954 case V4L2_PIX_FMT_RGB32:
964 /* Deal with non-integer no. of bytes for YUV420P */
965 if (frame->v4l2_format.format != V4L2_PIX_FMT_YVU420 )
966 *pcopylen += frame->v4l2_linesize;
968 *pcopylen += frame->curline & 0x01 ? frame->v4l2_linesize : frame->v4l2_linesize << 1;
972 if (frame->curline >= frame->frmheight) {
973 return ParseState_NextFrame;
976 return ParseState_Continue;
983 * usbvision_parse_lines_420()
985 * Parse two lines from the scratch buffer, put
986 * decoded RGB value into the current frame buffer and add the written
987 * number of bytes (RGB) to the *pcopylen.
990 static enum ParseState usbvision_parse_lines_420(struct usb_usbvision *usbvision,
993 struct usbvision_frame *frame;
994 unsigned char *f_even = NULL, *f_odd = NULL;
995 unsigned int pixel_per_line, block;
996 int pixel, block_split;
997 int y_ptr, u_ptr, v_ptr, y_odd_offset;
998 const int y_block_size = 128;
999 const int uv_block_size = 64;
1000 const int sub_block_size = 32;
1001 const int y_step[] = { 0, 0, 0, 2 }, y_step_size = 4;
1002 const int uv_step[]= { 0, 0, 0, 4 }, uv_step_size = 4;
1003 unsigned char y[2], u, v; /* YUV components */
1004 int y_, u_, v_, vb, uvg, ur;
1005 int r_, g_, b_; /* RGB components */
1007 int clipmask_even_index, clipmask_odd_index, bytes_per_pixel;
1008 int clipmask_add, stretch_bytes;
1010 frame = usbvision->curFrame;
1011 f_even = frame->data + (frame->v4l2_linesize * frame->curline);
1012 f_odd = f_even + frame->v4l2_linesize * usbvision->stretch_height;
1014 /* Make sure there's enough data for the entire line */
1015 /* In this mode usbvision transfer 3 bytes for every 2 pixels */
1016 /* I need two lines to decode the color */
1017 bytes_per_pixel = frame->v4l2_format.bytes_per_pixel;
1018 stretch_bytes = (usbvision->stretch_width - 1) * bytes_per_pixel;
1019 clipmask_even_index = frame->curline * MAX_FRAME_WIDTH;
1020 clipmask_odd_index = clipmask_even_index + MAX_FRAME_WIDTH;
1021 clipmask_add = usbvision->stretch_width;
1022 pixel_per_line = frame->isocHeader.frameWidth;
1024 if (scratch_len(usbvision) < (int)pixel_per_line * 3) {
1025 //printk(KERN_DEBUG "out of data, need %d\n", len);
1026 return ParseState_Out;
1029 if ((frame->curline + 1) >= frame->frmheight) {
1030 return ParseState_NextFrame;
1033 block_split = (pixel_per_line%y_block_size) ? 1 : 0; //are some blocks splitted into different lines?
1035 y_odd_offset = (pixel_per_line / y_block_size) * (y_block_size + uv_block_size)
1036 + block_split * uv_block_size;
1038 scratch_set_extra_ptr(usbvision, &y_ptr, y_odd_offset);
1039 scratch_set_extra_ptr(usbvision, &u_ptr, y_block_size);
1040 scratch_set_extra_ptr(usbvision, &v_ptr, y_odd_offset
1041 + (4 - block_split) * sub_block_size);
1043 for (block = 0; block < (pixel_per_line / sub_block_size);
1047 for (pixel = 0; pixel < sub_block_size; pixel +=2) {
1048 scratch_get(usbvision, &y[0], 2);
1049 scratch_get_extra(usbvision, &u, &u_ptr, 1);
1050 scratch_get_extra(usbvision, &v, &v_ptr, 1);
1052 //I don't use the YUV_TO_RGB macro for better performance
1056 uvg= -53281 * u_ - 25625 * v_;
1059 if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
1064 y_ = 76284 * (y[0] - 16);
1066 b_ = (y_ + vb) >> 16;
1067 g_ = (y_ + uvg)>> 16;
1068 r_ = (y_ + ur) >> 16;
1070 switch (frame->v4l2_format.format) {
1071 case V4L2_PIX_FMT_RGB565:
1073 *f_even++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 3));
1074 *f_even++ = (0x07 & ( g >> 5)) | (0xF8 & LIMIT_RGB(r_));
1076 case V4L2_PIX_FMT_RGB24:
1077 *f_even++ = LIMIT_RGB(b_);
1078 *f_even++ = LIMIT_RGB(g_);
1079 *f_even++ = LIMIT_RGB(r_);
1081 case V4L2_PIX_FMT_RGB32:
1082 *f_even++ = LIMIT_RGB(b_);
1083 *f_even++ = LIMIT_RGB(g_);
1084 *f_even++ = LIMIT_RGB(r_);
1087 case V4L2_PIX_FMT_RGB555:
1089 *f_even++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 2));
1090 *f_even++ = (0x03 & ( g >> 6)) |
1091 (0x7C & (LIMIT_RGB(r_) >> 1));
1095 clipmask_even_index += clipmask_add;
1096 f_even += stretch_bytes;
1098 if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
1103 y_ = 76284 * (y[1] - 16);
1105 b_ = (y_ + vb) >> 16;
1106 g_ = (y_ + uvg)>> 16;
1107 r_ = (y_ + ur) >> 16;
1109 switch (frame->v4l2_format.format) {
1110 case V4L2_PIX_FMT_RGB565:
1112 *f_even++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 3));
1113 *f_even++ = (0x07 & ( g >> 5)) | (0xF8 & LIMIT_RGB(r_));
1115 case V4L2_PIX_FMT_RGB24:
1116 *f_even++ = LIMIT_RGB(b_);
1117 *f_even++ = LIMIT_RGB(g_);
1118 *f_even++ = LIMIT_RGB(r_);
1120 case V4L2_PIX_FMT_RGB32:
1121 *f_even++ = LIMIT_RGB(b_);
1122 *f_even++ = LIMIT_RGB(g_);
1123 *f_even++ = LIMIT_RGB(r_);
1126 case V4L2_PIX_FMT_RGB555:
1128 *f_even++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 2));
1129 *f_even++ = (0x03 & ( g >> 6)) |
1130 (0x7C & (LIMIT_RGB(r_) >> 1));
1134 clipmask_even_index += clipmask_add;
1135 f_even += stretch_bytes;
1137 scratch_get_extra(usbvision, &y[0], &y_ptr, 2);
1139 if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
1144 y_ = 76284 * (y[0] - 16);
1146 b_ = (y_ + vb) >> 16;
1147 g_ = (y_ + uvg)>> 16;
1148 r_ = (y_ + ur) >> 16;
1150 switch (frame->v4l2_format.format) {
1151 case V4L2_PIX_FMT_RGB565:
1153 *f_odd++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 3));
1154 *f_odd++ = (0x07 & ( g >> 5)) | (0xF8 & LIMIT_RGB(r_));
1156 case V4L2_PIX_FMT_RGB24:
1157 *f_odd++ = LIMIT_RGB(b_);
1158 *f_odd++ = LIMIT_RGB(g_);
1159 *f_odd++ = LIMIT_RGB(r_);
1161 case V4L2_PIX_FMT_RGB32:
1162 *f_odd++ = LIMIT_RGB(b_);
1163 *f_odd++ = LIMIT_RGB(g_);
1164 *f_odd++ = LIMIT_RGB(r_);
1167 case V4L2_PIX_FMT_RGB555:
1169 *f_odd++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 2));
1170 *f_odd++ = (0x03 & ( g >> 6)) |
1171 (0x7C & (LIMIT_RGB(r_) >> 1));
1175 clipmask_odd_index += clipmask_add;
1176 f_odd += stretch_bytes;
1178 if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
1183 y_ = 76284 * (y[1] - 16);
1185 b_ = (y_ + vb) >> 16;
1186 g_ = (y_ + uvg)>> 16;
1187 r_ = (y_ + ur) >> 16;
1189 switch (frame->v4l2_format.format) {
1190 case V4L2_PIX_FMT_RGB565:
1192 *f_odd++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 3));
1193 *f_odd++ = (0x07 & ( g >> 5)) | (0xF8 & LIMIT_RGB(r_));
1195 case V4L2_PIX_FMT_RGB24:
1196 *f_odd++ = LIMIT_RGB(b_);
1197 *f_odd++ = LIMIT_RGB(g_);
1198 *f_odd++ = LIMIT_RGB(r_);
1200 case V4L2_PIX_FMT_RGB32:
1201 *f_odd++ = LIMIT_RGB(b_);
1202 *f_odd++ = LIMIT_RGB(g_);
1203 *f_odd++ = LIMIT_RGB(r_);
1206 case V4L2_PIX_FMT_RGB555:
1208 *f_odd++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 2));
1209 *f_odd++ = (0x03 & ( g >> 6)) |
1210 (0x7C & (LIMIT_RGB(r_) >> 1));
1214 clipmask_odd_index += clipmask_add;
1215 f_odd += stretch_bytes;
1218 scratch_rm_old(usbvision,y_step[block % y_step_size] * sub_block_size);
1219 scratch_inc_extra_ptr(&y_ptr, y_step[(block + 2 * block_split) % y_step_size]
1221 scratch_inc_extra_ptr(&u_ptr, uv_step[block % uv_step_size]
1223 scratch_inc_extra_ptr(&v_ptr, uv_step[(block + 2 * block_split) % uv_step_size]
1227 scratch_rm_old(usbvision, pixel_per_line * 3 / 2
1228 + block_split * sub_block_size);
1230 frame->curline += 2 * usbvision->stretch_height;
1231 *pcopylen += frame->v4l2_linesize * 2 * usbvision->stretch_height;
1233 if (frame->curline >= frame->frmheight)
1234 return ParseState_NextFrame;
1236 return ParseState_Continue;
1240 * usbvision_parse_data()
1242 * Generic routine to parse the scratch buffer. It employs either
1243 * usbvision_find_header() or usbvision_parse_lines() to do most
1247 static void usbvision_parse_data(struct usb_usbvision *usbvision)
1249 struct usbvision_frame *frame;
1250 enum ParseState newstate;
1252 unsigned long lock_flags;
1254 frame = usbvision->curFrame;
1256 PDEBUG(DBG_PARSE, "parsing len=%d\n", scratch_len(usbvision));
1260 newstate = ParseState_Out;
1261 if (scratch_len(usbvision)) {
1262 if (frame->scanstate == ScanState_Scanning) {
1263 newstate = usbvision_find_header(usbvision);
1265 else if (frame->scanstate == ScanState_Lines) {
1266 if (usbvision->isocMode == ISOC_MODE_YUV420) {
1267 newstate = usbvision_parse_lines_420(usbvision, ©len);
1269 else if (usbvision->isocMode == ISOC_MODE_YUV422) {
1270 newstate = usbvision_parse_lines_422(usbvision, ©len);
1272 else if (usbvision->isocMode == ISOC_MODE_COMPRESS) {
1273 newstate = usbvision_parse_compress(usbvision, ©len);
1278 if (newstate == ParseState_Continue) {
1281 else if ((newstate == ParseState_NextFrame) || (newstate == ParseState_Out)) {
1285 return; /* ParseState_EndParse */
1289 if (newstate == ParseState_NextFrame) {
1290 frame->grabstate = FrameState_Done;
1291 do_gettimeofday(&(frame->timestamp));
1292 frame->sequence = usbvision->frame_num;
1294 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1295 list_move_tail(&(frame->frame), &usbvision->outqueue);
1296 usbvision->curFrame = NULL;
1297 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1299 usbvision->frame_num++;
1301 /* This will cause the process to request another frame. */
1302 if (waitqueue_active(&usbvision->wait_frame)) {
1303 PDEBUG(DBG_PARSE, "Wake up !");
1304 wake_up_interruptible(&usbvision->wait_frame);
1308 frame->grabstate = FrameState_Grabbing;
1311 /* Update the frame's uncompressed length. */
1312 frame->scanlength += copylen;
1317 * Make all of the blocks of data contiguous
1319 static int usbvision_compress_isochronous(struct usb_usbvision *usbvision,
1322 unsigned char *packet_data;
1325 for (i = 0; i < urb->number_of_packets; i++) {
1326 int packet_len = urb->iso_frame_desc[i].actual_length;
1327 int packet_stat = urb->iso_frame_desc[i].status;
1329 packet_data = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
1331 /* Detect and ignore errored packets */
1332 if (packet_stat) { // packet_stat != 0 ?????????????
1333 PDEBUG(DBG_ISOC, "data error: [%d] len=%d, status=%X", i, packet_len, packet_stat);
1334 usbvision->isocErrCount++;
1338 /* Detect and ignore empty packets */
1339 if (packet_len < 0) {
1340 PDEBUG(DBG_ISOC, "error packet [%d]", i);
1341 usbvision->isocSkipCount++;
1344 else if (packet_len == 0) { /* Frame end ????? */
1345 PDEBUG(DBG_ISOC, "null packet [%d]", i);
1346 usbvision->isocstate=IsocState_NoFrame;
1347 usbvision->isocSkipCount++;
1350 else if (packet_len > usbvision->isocPacketSize) {
1351 PDEBUG(DBG_ISOC, "packet[%d] > isocPacketSize", i);
1352 usbvision->isocSkipCount++;
1356 PDEBUG(DBG_ISOC, "packet ok [%d] len=%d", i, packet_len);
1358 if (usbvision->isocstate==IsocState_NoFrame) { //new frame begins
1359 usbvision->isocstate=IsocState_InFrame;
1360 scratch_mark_header(usbvision);
1361 usbvision_measure_bandwidth(usbvision);
1362 PDEBUG(DBG_ISOC, "packet with header");
1366 * If usbvision continues to feed us with data but there is no
1367 * consumption (if, for example, V4L client fell asleep) we
1368 * may overflow the buffer. We have to move old data over to
1369 * free room for new data. This is bad for old data. If we
1370 * just drop new data then it's bad for new data... choose
1371 * your favorite evil here.
1373 if (scratch_free(usbvision) < packet_len) {
1375 usbvision->scratch_ovf_count++;
1376 PDEBUG(DBG_ISOC, "scratch buf overflow! scr_len: %d, n: %d",
1377 scratch_len(usbvision), packet_len);
1378 scratch_rm_old(usbvision, packet_len - scratch_free(usbvision));
1381 /* Now we know that there is enough room in scratch buffer */
1382 scratch_put(usbvision, packet_data, packet_len);
1383 totlen += packet_len;
1384 usbvision->isocDataCount += packet_len;
1385 usbvision->isocPacketCount++;
1391 printk(KERN_DEBUG "+%d.\n", usbvision->scratchlen);
1392 usbvision_hexdump(data0, (totlen > 64) ? 64 : totlen);
1400 static void usbvision_isocIrq(struct urb *urb, struct pt_regs *regs)
1404 struct usb_usbvision *usbvision = urb->context;
1406 unsigned long startTime = jiffies;
1407 struct usbvision_frame **f;
1409 /* We don't want to do anything if we are about to be removed! */
1410 if (!USBVISION_IS_OPERATIONAL(usbvision))
1413 f = &usbvision->curFrame;
1415 /* Manage streaming interruption */
1416 if (usbvision->streaming == Stream_Interrupt) {
1417 usbvision->streaming = Stream_Idle;
1419 (*f)->grabstate = FrameState_Ready;
1420 (*f)->scanstate = ScanState_Scanning;
1422 PDEBUG(DBG_IRQ, "stream interrupted");
1423 wake_up_interruptible(&usbvision->wait_stream);
1426 /* Copy the data received into our scratch buffer */
1427 len = usbvision_compress_isochronous(usbvision, urb);
1429 usbvision->isocUrbCount++;
1430 usbvision->urb_length = len;
1432 if (usbvision->streaming == Stream_On) {
1434 /* If we collected enough data let's parse! */
1435 if (scratch_len(usbvision) > USBVISION_HEADER_LENGTH) { /* 12 == header_length */
1436 /*If we don't have a frame we're current working on, complain */
1437 if(!list_empty(&(usbvision->inqueue))) {
1439 (*f) = list_entry(usbvision->inqueue.next,struct usbvision_frame, frame);
1441 usbvision_parse_data(usbvision);
1444 PDEBUG(DBG_IRQ, "received data, but no one needs it");
1445 scratch_reset(usbvision);
1450 PDEBUG(DBG_IRQ, "received data, but no one needs it");
1451 scratch_reset(usbvision);
1454 usbvision->timeInIrq += jiffies - startTime;
1456 for (i = 0; i < USBVISION_URB_FRAMES; i++) {
1457 urb->iso_frame_desc[i].status = 0;
1458 urb->iso_frame_desc[i].actual_length = 0;
1462 urb->dev = usbvision->dev;
1463 errCode = usb_submit_urb (urb, GFP_ATOMIC);
1465 /* Disable this warning. By design of the driver. */
1467 // err("%s: usb_submit_urb failed: error %d", __FUNCTION__, errCode);
1473 /*************************************/
1474 /* Low level usbvision access functions */
1475 /*************************************/
1478 * usbvision_read_reg()
1480 * return < 0 -> Error
1484 int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg)
1487 unsigned char buffer[1];
1489 if (!USBVISION_IS_OPERATIONAL(usbvision))
1492 errCode = usb_control_msg(usbvision->dev, usb_rcvctrlpipe(usbvision->dev, 1),
1494 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT,
1495 0, (__u16) reg, buffer, 1, HZ);
1498 err("%s: failed: error %d", __FUNCTION__, errCode);
1505 * usbvision_write_reg()
1507 * return 1 -> Reg written
1508 * 0 -> usbvision is not yet ready
1509 * -1 -> Something went wrong
1512 int usbvision_write_reg(struct usb_usbvision *usbvision, unsigned char reg,
1513 unsigned char value)
1517 if (!USBVISION_IS_OPERATIONAL(usbvision))
1520 errCode = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
1522 USB_DIR_OUT | USB_TYPE_VENDOR |
1523 USB_RECIP_ENDPOINT, 0, (__u16) reg, &value, 1, HZ);
1526 err("%s: failed: error %d", __FUNCTION__, errCode);
1532 static void usbvision_ctrlUrb_complete(struct urb *urb, struct pt_regs *regs)
1534 struct usb_usbvision *usbvision = (struct usb_usbvision *)urb->context;
1536 PDEBUG(DBG_IRQ, "");
1537 usbvision->ctrlUrbBusy = 0;
1538 if (waitqueue_active(&usbvision->ctrlUrb_wq)) {
1539 wake_up_interruptible(&usbvision->ctrlUrb_wq);
1544 static int usbvision_write_reg_irq(struct usb_usbvision *usbvision,int address,
1545 unsigned char *data, int len)
1549 PDEBUG(DBG_IRQ, "");
1553 // down(&usbvision->ctrlUrbLock);
1554 if (usbvision->ctrlUrbBusy) {
1555 // up(&usbvision->ctrlUrbLock);
1558 usbvision->ctrlUrbBusy = 1;
1559 // up(&usbvision->ctrlUrbLock);
1561 usbvision->ctrlUrbSetup.bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT;
1562 usbvision->ctrlUrbSetup.bRequest = USBVISION_OP_CODE;
1563 usbvision->ctrlUrbSetup.wValue = 0;
1564 usbvision->ctrlUrbSetup.wIndex = cpu_to_le16(address);
1565 usbvision->ctrlUrbSetup.wLength = cpu_to_le16(len);
1566 usb_fill_control_urb (usbvision->ctrlUrb, usbvision->dev,
1567 usb_sndctrlpipe(usbvision->dev, 1),
1568 (unsigned char *)&usbvision->ctrlUrbSetup,
1569 (void *)usbvision->ctrlUrbBuffer, len,
1570 usbvision_ctrlUrb_complete,
1573 memcpy(usbvision->ctrlUrbBuffer, data, len);
1575 errCode = usb_submit_urb(usbvision->ctrlUrb, GFP_ATOMIC);
1577 // error in usb_submit_urb()
1578 usbvision->ctrlUrbBusy = 0;
1580 PDEBUG(DBG_IRQ, "submit %d byte: error %d", len, errCode);
1585 static int usbvision_init_compression(struct usb_usbvision *usbvision)
1589 usbvision->lastIsocFrameNum = -1;
1590 usbvision->isocDataCount = 0;
1591 usbvision->isocPacketCount = 0;
1592 usbvision->isocSkipCount = 0;
1593 usbvision->comprLevel = 50;
1594 usbvision->lastComprLevel = -1;
1595 usbvision->isocUrbCount = 0;
1596 usbvision->requestIntra = 1;
1597 usbvision->isocMeasureBandwidthCount = 0;
1602 /* this function measures the used bandwidth since last call
1603 * return: 0 : no error
1604 * sets usedBandwidth to 1-100 : 1-100% of full bandwidth resp. to isocPacketSize
1606 static int usbvision_measure_bandwidth (struct usb_usbvision *usbvision)
1610 if (usbvision->isocMeasureBandwidthCount < 2) { // this gives an average bandwidth of 3 frames
1611 usbvision->isocMeasureBandwidthCount++;
1614 if ((usbvision->isocPacketSize > 0) && (usbvision->isocPacketCount > 0)) {
1615 usbvision->usedBandwidth = usbvision->isocDataCount /
1616 (usbvision->isocPacketCount + usbvision->isocSkipCount) *
1617 100 / usbvision->isocPacketSize;
1619 usbvision->isocMeasureBandwidthCount = 0;
1620 usbvision->isocDataCount = 0;
1621 usbvision->isocPacketCount = 0;
1622 usbvision->isocSkipCount = 0;
1626 static int usbvision_adjust_compression (struct usb_usbvision *usbvision)
1629 unsigned char buffer[6];
1631 PDEBUG(DBG_IRQ, "");
1632 if ((adjustCompression) && (usbvision->usedBandwidth > 0)) {
1633 usbvision->comprLevel += (usbvision->usedBandwidth - 90) / 2;
1634 RESTRICT_TO_RANGE(usbvision->comprLevel, 0, 100);
1635 if (usbvision->comprLevel != usbvision->lastComprLevel) {
1637 if (usbvision->bridgeType == BRIDGE_NT1004 || usbvision->bridgeType == BRIDGE_NT1005) {
1638 buffer[0] = (unsigned char)(4 + 16 * usbvision->comprLevel / 100); // PCM Threshold 1
1639 buffer[1] = (unsigned char)(4 + 8 * usbvision->comprLevel / 100); // PCM Threshold 2
1640 distorsion = 7 + 248 * usbvision->comprLevel / 100;
1641 buffer[2] = (unsigned char)(distorsion & 0xFF); // Average distorsion Threshold (inter)
1642 buffer[3] = (unsigned char)(distorsion & 0xFF); // Average distorsion Threshold (intra)
1643 distorsion = 1 + 42 * usbvision->comprLevel / 100;
1644 buffer[4] = (unsigned char)(distorsion & 0xFF); // Maximum distorsion Threshold (inter)
1645 buffer[5] = (unsigned char)(distorsion & 0xFF); // Maximum distorsion Threshold (intra)
1647 else { //BRIDGE_NT1003
1648 buffer[0] = (unsigned char)(4 + 16 * usbvision->comprLevel / 100); // PCM threshold 1
1649 buffer[1] = (unsigned char)(4 + 8 * usbvision->comprLevel / 100); // PCM threshold 2
1650 distorsion = 2 + 253 * usbvision->comprLevel / 100;
1651 buffer[2] = (unsigned char)(distorsion & 0xFF); // distorsion threshold bit0-7
1652 buffer[3] = 0; //(unsigned char)((distorsion >> 8) & 0x0F); // distorsion threshold bit 8-11
1653 distorsion = 0 + 43 * usbvision->comprLevel / 100;
1654 buffer[4] = (unsigned char)(distorsion & 0xFF); // maximum distorsion bit0-7
1655 buffer[5] = 0; //(unsigned char)((distorsion >> 8) & 0x01); // maximum distorsion bit 8
1657 errCode = usbvision_write_reg_irq(usbvision, USBVISION_PCM_THR1, buffer, 6);
1659 PDEBUG(DBG_IRQ, "new compr params %#02x %#02x %#02x %#02x %#02x %#02x", buffer[0],
1660 buffer[1], buffer[2], buffer[3], buffer[4], buffer[5]);
1661 usbvision->lastComprLevel = usbvision->comprLevel;
1668 static int usbvision_request_intra (struct usb_usbvision *usbvision)
1671 unsigned char buffer[1];
1673 PDEBUG(DBG_IRQ, "");
1674 usbvision->requestIntra = 1;
1676 usbvision_write_reg_irq(usbvision, USBVISION_FORCE_INTRA, buffer, 1);
1680 static int usbvision_unrequest_intra (struct usb_usbvision *usbvision)
1683 unsigned char buffer[1];
1685 PDEBUG(DBG_IRQ, "");
1686 usbvision->requestIntra = 0;
1688 usbvision_write_reg_irq(usbvision, USBVISION_FORCE_INTRA, buffer, 1);
1692 /*******************************
1693 * usbvision utility functions
1694 *******************************/
1696 int usbvision_power_off(struct usb_usbvision *usbvision)
1700 PDEBUG(DBG_FUNC, "");
1702 errCode = usbvision_write_reg(usbvision, USBVISION_PWR_REG, USBVISION_SSPND_EN);
1704 usbvision->power = 0;
1706 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(void *_usbvision)
2221 struct usb_usbvision *usbvision = _usbvision;
2223 PDEBUG(DBG_FUNC, "");
2224 down_interruptible(&usbvision->lock);
2225 if(usbvision->user == 0) {
2226 usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
2227 usbvision_power_off(usbvision);
2228 usbvision->initialized = 0;
2230 up(&usbvision->lock);
2233 static void usbvision_powerOffTimer(unsigned long data)
2235 struct usb_usbvision *usbvision = (void *) data;
2237 PDEBUG(DBG_FUNC, "");
2238 del_timer(&usbvision->powerOffTimer);
2239 INIT_WORK(&usbvision->powerOffWork, call_usbvision_power_off, usbvision);
2240 (void) schedule_work(&usbvision->powerOffWork);
2244 void usbvision_init_powerOffTimer(struct usb_usbvision *usbvision)
2246 init_timer(&usbvision->powerOffTimer);
2247 usbvision->powerOffTimer.data = (long) usbvision;
2248 usbvision->powerOffTimer.function = usbvision_powerOffTimer;
2251 void usbvision_set_powerOffTimer(struct usb_usbvision *usbvision)
2253 mod_timer(&usbvision->powerOffTimer, jiffies + USBVISION_POWEROFF_TIME);
2256 void usbvision_reset_powerOffTimer(struct usb_usbvision *usbvision)
2258 if (timer_pending(&usbvision->powerOffTimer)) {
2259 del_timer(&usbvision->powerOffTimer);
2264 * usbvision_begin_streaming()
2265 * Sure you have to put bit 7 to 0, if not incoming frames are droped, but no
2266 * idea about the rest
2268 int usbvision_begin_streaming(struct usb_usbvision *usbvision)
2272 if (usbvision->isocMode == ISOC_MODE_COMPRESS) {
2273 usbvision_init_compression(usbvision);
2275 errCode = usbvision_write_reg(usbvision, USBVISION_VIN_REG2, USBVISION_NOHVALID |
2276 usbvision->Vin_Reg2_Preset);
2281 * usbvision_restart_isoc()
2282 * Not sure yet if touching here PWR_REG make loose the config
2285 int usbvision_restart_isoc(struct usb_usbvision *usbvision)
2291 usbvision_write_reg(usbvision, USBVISION_PWR_REG,
2292 USBVISION_SSPND_EN | USBVISION_PWR_VID)) < 0)
2296 usbvision_write_reg(usbvision, USBVISION_PWR_REG,
2297 USBVISION_SSPND_EN | USBVISION_PWR_VID |
2298 USBVISION_RES2)) < 0)
2302 usbvision_write_reg(usbvision, USBVISION_VIN_REG2,
2303 USBVISION_KEEP_BLANK | USBVISION_NOHVALID |
2304 usbvision->Vin_Reg2_Preset)) < 0) return ret;
2306 /* TODO: schedule timeout */
2307 while ((usbvision_read_reg(usbvision, USBVISION_STATUS_REG) && 0x01) != 1);
2312 int usbvision_audio_off(struct usb_usbvision *usbvision)
2314 if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, USBVISION_AUDIO_MUTE) < 0) {
2315 printk(KERN_ERR "usbvision_audio_off: can't wirte reg\n");
2318 usbvision->AudioMute = 0;
2319 usbvision->AudioChannel = USBVISION_AUDIO_MUTE;
2323 int usbvision_set_audio(struct usb_usbvision *usbvision, int AudioChannel)
2325 if (!usbvision->AudioMute) {
2326 if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, AudioChannel) < 0) {
2327 printk(KERN_ERR "usbvision_set_audio: can't write iopin register for audio switching\n");
2331 usbvision->AudioChannel = AudioChannel;
2335 int usbvision_setup(struct usb_usbvision *usbvision,int format)
2337 usbvision_set_video_format(usbvision, format);
2338 usbvision_set_dram_settings(usbvision);
2339 usbvision_set_compress_params(usbvision);
2340 usbvision_set_input(usbvision);
2341 usbvision_set_output(usbvision, MAX_USB_WIDTH, MAX_USB_HEIGHT);
2342 usbvision_restart_isoc(usbvision);
2345 return USBVISION_IS_OPERATIONAL(usbvision);
2349 int usbvision_sbuf_alloc(struct usb_usbvision *usbvision)
2352 const int sb_size = USBVISION_URB_FRAMES * USBVISION_MAX_ISOC_PACKET_SIZE;
2354 /* Clean pointers so we know if we allocated something */
2355 for (i = 0; i < USBVISION_NUMSBUF; i++)
2356 usbvision->sbuf[i].data = NULL;
2358 for (i = 0; i < USBVISION_NUMSBUF; i++) {
2359 usbvision->sbuf[i].data = kzalloc(sb_size, GFP_KERNEL);
2360 if (usbvision->sbuf[i].data == NULL) {
2361 err("%s: unable to allocate %d bytes for sbuf", __FUNCTION__, sb_size);
2370 void usbvision_sbuf_free(struct usb_usbvision *usbvision)
2374 for (i = 0; i < USBVISION_NUMSBUF; i++) {
2375 if (usbvision->sbuf[i].data != NULL) {
2376 kfree(usbvision->sbuf[i].data);
2377 usbvision->sbuf[i].data = NULL;
2383 * usbvision_init_isoc()
2386 int usbvision_init_isoc(struct usb_usbvision *usbvision)
2388 struct usb_device *dev = usbvision->dev;
2389 int bufIdx, errCode, regValue;
2391 if (!USBVISION_IS_OPERATIONAL(usbvision))
2394 usbvision->curFrame = NULL;
2395 scratch_reset(usbvision);
2397 /* Alternate interface 1 is is the biggest frame size */
2398 errCode = usb_set_interface(dev, usbvision->iface, usbvision->ifaceAltActive);
2400 usbvision->last_error = errCode;
2404 regValue = (16 - usbvision_read_reg(usbvision, USBVISION_ALTER_REG)) & 0x0F;
2405 usbvision->isocPacketSize = (regValue == 0) ? 0 : (regValue * 64) - 1;
2406 PDEBUG(DBG_ISOC, "ISO Packet Length:%d", usbvision->isocPacketSize);
2408 usbvision->usb_bandwidth = regValue >> 1;
2409 PDEBUG(DBG_ISOC, "USB Bandwidth Usage: %dMbit/Sec", usbvision->usb_bandwidth);
2413 /* We double buffer the Iso lists */
2415 for (bufIdx = 0; bufIdx < USBVISION_NUMSBUF; bufIdx++) {
2419 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
2420 urb = usb_alloc_urb(USBVISION_URB_FRAMES);
2422 urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
2425 err("%s: usb_alloc_urb() failed", __FUNCTION__);
2428 usbvision->sbuf[bufIdx].urb = urb;
2430 urb->context = usbvision;
2431 urb->pipe = usb_rcvisocpipe(dev, usbvision->video_endp);
2432 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
2433 urb->transfer_flags = USB_ISO_ASAP;
2435 urb->transfer_flags = URB_ISO_ASAP;
2438 urb->transfer_buffer = usbvision->sbuf[bufIdx].data;
2439 urb->complete = usbvision_isocIrq;
2440 urb->number_of_packets = USBVISION_URB_FRAMES;
2441 urb->transfer_buffer_length =
2442 usbvision->isocPacketSize * USBVISION_URB_FRAMES;
2443 for (j = k = 0; j < USBVISION_URB_FRAMES; j++,
2444 k += usbvision->isocPacketSize) {
2445 urb->iso_frame_desc[j].offset = k;
2446 urb->iso_frame_desc[j].length = usbvision->isocPacketSize;
2451 /* Submit all URBs */
2452 for (bufIdx = 0; bufIdx < USBVISION_NUMSBUF; bufIdx++) {
2453 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
2454 errCode = usb_submit_urb(usbvision->sbuf[bufIdx].urb);
2456 errCode = usb_submit_urb(usbvision->sbuf[bufIdx].urb, GFP_KERNEL);
2459 err("%s: usb_submit_urb(%d) failed: error %d", __FUNCTION__, bufIdx, errCode);
2463 usbvision->streaming = Stream_Idle;
2464 PDEBUG(DBG_ISOC, "%s: streaming=1 usbvision->video_endp=$%02x", __FUNCTION__, usbvision->video_endp);
2469 * usbvision_stop_isoc()
2471 * This procedure stops streaming and deallocates URBs. Then it
2472 * activates zero-bandwidth alt. setting of the video interface.
2475 void usbvision_stop_isoc(struct usb_usbvision *usbvision)
2477 int bufIdx, errCode, regValue;
2479 if ((usbvision->streaming == Stream_Off) || (usbvision->dev == NULL))
2482 /* Unschedule all of the iso td's */
2483 for (bufIdx = 0; bufIdx < USBVISION_NUMSBUF; bufIdx++) {
2484 usb_kill_urb(usbvision->sbuf[bufIdx].urb);
2485 usb_free_urb(usbvision->sbuf[bufIdx].urb);
2486 usbvision->sbuf[bufIdx].urb = NULL;
2490 PDEBUG(DBG_ISOC, "%s: streaming=Stream_Off\n", __FUNCTION__);
2491 usbvision->streaming = Stream_Off;
2493 if (!usbvision->remove_pending) {
2495 /* Set packet size to 0 */
2496 errCode = usb_set_interface(usbvision->dev, usbvision->iface,
2497 usbvision->ifaceAltInactive);
2499 err("%s: usb_set_interface() failed: error %d", __FUNCTION__, errCode);
2500 usbvision->last_error = errCode;
2502 regValue = (16 - usbvision_read_reg(usbvision, USBVISION_ALTER_REG)) & 0x0F;
2503 usbvision->isocPacketSize = (regValue == 0) ? 0 : (regValue * 64) - 1;
2504 PDEBUG(DBG_ISOC, "ISO Packet Length:%d", usbvision->isocPacketSize);
2506 usbvision->usb_bandwidth = regValue >> 1;
2507 PDEBUG(DBG_ISOC, "USB Bandwidth Usage: %dMbit/Sec", usbvision->usb_bandwidth);
2511 int usbvision_muxsel(struct usb_usbvision *usbvision, int channel)
2514 int audio[]= {1, 0, 0, 0};
2515 struct v4l2_routing route;
2516 //channel 0 is TV with audiochannel 1 (tuner mono)
2517 //channel 1 is Composite with audio channel 0 (line in)
2518 //channel 2 is S-Video with audio channel 0 (line in)
2519 //channel 3 is additional video inputs to the device with audio channel 0 (line in)
2521 RESTRICT_TO_RANGE(channel, 0, usbvision->video_inputs);
2522 usbvision->ctl_input = channel;
2523 route.input = SAA7115_COMPOSITE1;
2524 call_i2c_clients(usbvision, VIDIOC_INT_S_VIDEO_ROUTING,&route);
2525 call_i2c_clients(usbvision, VIDIOC_S_INPUT, &usbvision->ctl_input);
2527 // set the new channel
2528 // Regular USB TV Tuners -> channel: 0 = Television, 1 = Composite, 2 = S-Video
2529 // Four video input devices -> channel: 0 = Chan White, 1 = Chan Green, 2 = Chan Yellow, 3 = Chan Red
2531 switch (usbvision_device_data[usbvision->DevModel].Codec) {
2533 if (SwitchSVideoInput) { // To handle problems with S-Video Input for some devices. Use SwitchSVideoInput parameter when loading the module.
2539 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
2540 mode[0] = 0; mode[1] = 2; mode[3] = 3; // Special for four input devices
2543 mode[0] = 0; mode[1] = 2; //modes for regular saa7113 devices
2547 mode[0] = 0; mode[1] = 1; mode[2] = 7; //modes for saa7111
2550 mode[0] = 0; mode[1] = 1; mode[2] = 7; //default modes
2552 route.input = mode[channel];
2553 call_i2c_clients(usbvision, VIDIOC_INT_S_VIDEO_ROUTING,&route);
2554 usbvision->channel = channel;
2555 usbvision_set_audio(usbvision, audio[channel]);
2560 * Overrides for Emacs so that we follow Linus's tabbing style.
2561 * ---------------------------------------------------------------------------