diff options
Diffstat (limited to 'drivers/staging/media/usbvision/usbvision-core.c')
| -rw-r--r-- | drivers/staging/media/usbvision/usbvision-core.c | 2428 |
1 files changed, 0 insertions, 2428 deletions
diff --git a/drivers/staging/media/usbvision/usbvision-core.c b/drivers/staging/media/usbvision/usbvision-core.c deleted file mode 100644 index e35dee35b068..000000000000 --- a/drivers/staging/media/usbvision/usbvision-core.c +++ /dev/null @@ -1,2428 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * usbvision-core.c - driver for NT100x USB video capture devices - * - * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de> - * Dwaine Garden <dwainegarden@rogers.com> - * - * This module is part of usbvision driver project. - * Updates to driver completed by Dwaine P. Garden - */ - -#include <linux/kernel.h> -#include <linux/list.h> -#include <linux/timer.h> -#include <linux/gfp.h> -#include <linux/mm.h> -#include <linux/highmem.h> -#include <linux/vmalloc.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/spinlock.h> -#include <linux/io.h> -#include <linux/videodev2.h> -#include <linux/i2c.h> - -#include <media/i2c/saa7115.h> -#include <media/v4l2-common.h> -#include <media/tuner.h> - -#include <linux/workqueue.h> - -#include "usbvision.h" - -static unsigned int core_debug; -module_param(core_debug, int, 0644); -MODULE_PARM_DESC(core_debug, "enable debug messages [core]"); - -static int adjust_compression = 1; /* Set the compression to be adaptive */ -module_param(adjust_compression, int, 0444); -MODULE_PARM_DESC(adjust_compression, " Set the ADPCM compression for the device. Default: 1 (On)"); - -/* To help people with Black and White output with using s-video input. - * Some cables and input device are wired differently. */ -static int switch_svideo_input; -module_param(switch_svideo_input, int, 0444); -MODULE_PARM_DESC(switch_svideo_input, " Set the S-Video input. Some cables and input device are wired differently. Default: 0 (Off)"); - -static unsigned int adjust_x_offset = -1; -module_param(adjust_x_offset, int, 0644); -MODULE_PARM_DESC(adjust_x_offset, "adjust X offset display [core]"); - -static unsigned int adjust_y_offset = -1; -module_param(adjust_y_offset, int, 0644); -MODULE_PARM_DESC(adjust_y_offset, "adjust Y offset display [core]"); - - -#define ENABLE_HEXDUMP 0 /* Enable if you need it */ - - -#ifdef USBVISION_DEBUG - #define PDEBUG(level, fmt, args...) { \ - if (core_debug & (level)) \ - printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \ - __func__, __LINE__ , ## args); \ - } -#else - #define PDEBUG(level, fmt, args...) do {} while (0) -#endif - -#define DBG_HEADER (1 << 0) -#define DBG_IRQ (1 << 1) -#define DBG_ISOC (1 << 2) -#define DBG_PARSE (1 << 3) -#define DBG_SCRATCH (1 << 4) -#define DBG_FUNC (1 << 5) - -/* The value of 'scratch_buf_size' affects quality of the picture - * in many ways. Shorter buffers may cause loss of data when client - * is too slow. Larger buffers are memory-consuming and take longer - * to work with. This setting can be adjusted, but the default value - * should be OK for most desktop users. - */ -#define DEFAULT_SCRATCH_BUF_SIZE (0x20000) /* 128kB memory scratch buffer */ -static const int scratch_buf_size = DEFAULT_SCRATCH_BUF_SIZE; - -/* Function prototypes */ -static int usbvision_request_intra(struct usb_usbvision *usbvision); -static int usbvision_unrequest_intra(struct usb_usbvision *usbvision); -static int usbvision_adjust_compression(struct usb_usbvision *usbvision); -static int usbvision_measure_bandwidth(struct usb_usbvision *usbvision); - -/*******************************/ -/* Memory management functions */ -/*******************************/ - -/* - * Here we want the physical address of the memory. - * This is used when initializing the contents of the area. - */ - -static void *usbvision_rvmalloc(unsigned long size) -{ - void *mem; - unsigned long adr; - - size = PAGE_ALIGN(size); - mem = vmalloc_32(size); - if (!mem) - return NULL; - - memset(mem, 0, size); /* Clear the ram out, no junk to the user */ - adr = (unsigned long) mem; - while (size > 0) { - SetPageReserved(vmalloc_to_page((void *)adr)); - adr += PAGE_SIZE; - size -= PAGE_SIZE; - } - - return mem; -} - -static void usbvision_rvfree(void *mem, unsigned long size) -{ - unsigned long adr; - - if (!mem) - return; - - size = PAGE_ALIGN(size); - - adr = (unsigned long) mem; - while ((long) size > 0) { - ClearPageReserved(vmalloc_to_page((void *)adr)); - adr += PAGE_SIZE; - size -= PAGE_SIZE; - } - - vfree(mem); -} - - -#if ENABLE_HEXDUMP -static void usbvision_hexdump(const unsigned char *data, int len) -{ - char tmp[80]; - int i, k; - - for (i = k = 0; len > 0; i++, len--) { - if (i > 0 && (i % 16 == 0)) { - printk("%s\n", tmp); - k = 0; - } - k += sprintf(&tmp[k], "%02x ", data[i]); - } - if (k > 0) - printk(KERN_CONT "%s\n", tmp); -} -#endif - -/******************************** - * scratch ring buffer handling - ********************************/ -static int scratch_len(struct usb_usbvision *usbvision) /* This returns the amount of data actually in the buffer */ -{ - int len = usbvision->scratch_write_ptr - usbvision->scratch_read_ptr; - - if (len < 0) - len += scratch_buf_size; - PDEBUG(DBG_SCRATCH, "scratch_len() = %d\n", len); - - return len; -} - - -/* This returns the free space left in the buffer */ -static int scratch_free(struct usb_usbvision *usbvision) -{ - int free = usbvision->scratch_read_ptr - usbvision->scratch_write_ptr; - if (free <= 0) - free += scratch_buf_size; - if (free) { - free -= 1; /* at least one byte in the buffer must */ - /* left blank, otherwise there is no chance to differ between full and empty */ - } - PDEBUG(DBG_SCRATCH, "return %d\n", free); - - return free; -} - - -/* This puts data into the buffer */ -static int scratch_put(struct usb_usbvision *usbvision, unsigned char *data, - int len) -{ - int len_part; - - if (usbvision->scratch_write_ptr + len < scratch_buf_size) { - memcpy(usbvision->scratch + usbvision->scratch_write_ptr, data, len); - usbvision->scratch_write_ptr += len; - } else { - len_part = scratch_buf_size - usbvision->scratch_write_ptr; - memcpy(usbvision->scratch + usbvision->scratch_write_ptr, data, len_part); - if (len == len_part) { - usbvision->scratch_write_ptr = 0; /* just set write_ptr to zero */ - } else { - memcpy(usbvision->scratch, data + len_part, len - len_part); - usbvision->scratch_write_ptr = len - len_part; - } - } - - PDEBUG(DBG_SCRATCH, "len=%d, new write_ptr=%d\n", len, usbvision->scratch_write_ptr); - - return len; -} - -/* This marks the write_ptr as position of new frame header */ -static void scratch_mark_header(struct usb_usbvision *usbvision) -{ - PDEBUG(DBG_SCRATCH, "header at write_ptr=%d\n", usbvision->scratch_headermarker_write_ptr); - - usbvision->scratch_headermarker[usbvision->scratch_headermarker_write_ptr] = - usbvision->scratch_write_ptr; - usbvision->scratch_headermarker_write_ptr += 1; - usbvision->scratch_headermarker_write_ptr %= USBVISION_NUM_HEADERMARKER; -} - -/* This gets data from the buffer at the given "ptr" position */ -static int scratch_get_extra(struct usb_usbvision *usbvision, - unsigned char *data, int *ptr, int len) -{ - int len_part; - - if (*ptr + len < scratch_buf_size) { - memcpy(data, usbvision->scratch + *ptr, len); - *ptr += len; - } else { - len_part = scratch_buf_size - *ptr; - memcpy(data, usbvision->scratch + *ptr, len_part); - if (len == len_part) { - *ptr = 0; /* just set the y_ptr to zero */ - } else { - memcpy(data + len_part, usbvision->scratch, len - len_part); - *ptr = len - len_part; - } - } - - PDEBUG(DBG_SCRATCH, "len=%d, new ptr=%d\n", len, *ptr); - - return len; -} - - -/* This sets the scratch extra read pointer */ -static void scratch_set_extra_ptr(struct usb_usbvision *usbvision, int *ptr, - int len) -{ - *ptr = (usbvision->scratch_read_ptr + len) % scratch_buf_size; - - PDEBUG(DBG_SCRATCH, "ptr=%d\n", *ptr); -} - - -/* This increments the scratch extra read pointer */ -static void scratch_inc_extra_ptr(int *ptr, int len) -{ - *ptr = (*ptr + len) % scratch_buf_size; - - PDEBUG(DBG_SCRATCH, "ptr=%d\n", *ptr); -} - - -/* This gets data from the buffer */ -static int scratch_get(struct usb_usbvision *usbvision, unsigned char *data, - int len) -{ - int len_part; - - if (usbvision->scratch_read_ptr + len < scratch_buf_size) { - memcpy(data, usbvision->scratch + usbvision->scratch_read_ptr, len); - usbvision->scratch_read_ptr += len; - } else { - len_part = scratch_buf_size - usbvision->scratch_read_ptr; - memcpy(data, usbvision->scratch + usbvision->scratch_read_ptr, len_part); - if (len == len_part) { - usbvision->scratch_read_ptr = 0; /* just set the read_ptr to zero */ - } else { - memcpy(data + len_part, usbvision->scratch, len - len_part); - usbvision->scratch_read_ptr = len - len_part; - } - } - - PDEBUG(DBG_SCRATCH, "len=%d, new read_ptr=%d\n", len, usbvision->scratch_read_ptr); - - return len; -} - - -/* This sets read pointer to next header and returns it */ -static int scratch_get_header(struct usb_usbvision *usbvision, - struct usbvision_frame_header *header) -{ - int err_code = 0; - - PDEBUG(DBG_SCRATCH, "from read_ptr=%d", usbvision->scratch_headermarker_read_ptr); - - while (usbvision->scratch_headermarker_write_ptr - - usbvision->scratch_headermarker_read_ptr != 0) { - usbvision->scratch_read_ptr = - usbvision->scratch_headermarker[usbvision->scratch_headermarker_read_ptr]; - usbvision->scratch_headermarker_read_ptr += 1; - usbvision->scratch_headermarker_read_ptr %= USBVISION_NUM_HEADERMARKER; - scratch_get(usbvision, (unsigned char *)header, USBVISION_HEADER_LENGTH); - if ((header->magic_1 == USBVISION_MAGIC_1) - && (header->magic_2 == USBVISION_MAGIC_2) - && (header->header_length == USBVISION_HEADER_LENGTH)) { - err_code = USBVISION_HEADER_LENGTH; - header->frame_width = header->frame_width_lo + (header->frame_width_hi << 8); - header->frame_height = header->frame_height_lo + (header->frame_height_hi << 8); - break; - } - } - - return err_code; -} - - -/* This removes len bytes of old data from the buffer */ -static void scratch_rm_old(struct usb_usbvision *usbvision, int len) -{ - usbvision->scratch_read_ptr += len; - usbvision->scratch_read_ptr %= scratch_buf_size; - PDEBUG(DBG_SCRATCH, "read_ptr is now %d\n", usbvision->scratch_read_ptr); -} - - -/* This resets the buffer - kills all data in it too */ -static void scratch_reset(struct usb_usbvision *usbvision) -{ - PDEBUG(DBG_SCRATCH, "\n"); - - usbvision->scratch_read_ptr = 0; - usbvision->scratch_write_ptr = 0; - usbvision->scratch_headermarker_read_ptr = 0; - usbvision->scratch_headermarker_write_ptr = 0; - usbvision->isocstate = isoc_state_no_frame; -} - -int usbvision_scratch_alloc(struct usb_usbvision *usbvision) -{ - usbvision->scratch = vmalloc_32(scratch_buf_size); - scratch_reset(usbvision); - if (usbvision->scratch == NULL) { - dev_err(&usbvision->dev->dev, - "%s: unable to allocate %d bytes for scratch\n", - __func__, scratch_buf_size); - return -ENOMEM; - } - return 0; -} - -void usbvision_scratch_free(struct usb_usbvision *usbvision) -{ - vfree(usbvision->scratch); - usbvision->scratch = NULL; -} - -/* - * usbvision_decompress_alloc() - * - * allocates intermediate buffer for decompression - */ -int usbvision_decompress_alloc(struct usb_usbvision *usbvision) -{ - int IFB_size = MAX_FRAME_WIDTH * MAX_FRAME_HEIGHT * 3 / 2; - - usbvision->intra_frame_buffer = vmalloc_32(IFB_size); - if (usbvision->intra_frame_buffer == NULL) { - dev_err(&usbvision->dev->dev, - "%s: unable to allocate %d for compr. frame buffer\n", - __func__, IFB_size); - return -ENOMEM; - } - return 0; -} - -/* - * usbvision_decompress_free() - * - * frees intermediate buffer for decompression - */ -void usbvision_decompress_free(struct usb_usbvision *usbvision) -{ - vfree(usbvision->intra_frame_buffer); - usbvision->intra_frame_buffer = NULL; - -} - -/************************************************************ - * Here comes the data parsing stuff that is run as interrupt - ************************************************************/ -/* - * usbvision_find_header() - * - * Locate one of supported header markers in the scratch buffer. - */ -static enum parse_state usbvision_find_header(struct usb_usbvision *usbvision) -{ - struct usbvision_frame *frame; - int found_header = 0; - - frame = usbvision->cur_frame; - - while (scratch_get_header(usbvision, &frame->isoc_header) == USBVISION_HEADER_LENGTH) { - /* found header in scratch */ - PDEBUG(DBG_HEADER, "found header: 0x%02x%02x %d %d %d %d %#x 0x%02x %u %u", - frame->isoc_header.magic_2, - frame->isoc_header.magic_1, - frame->isoc_header.header_length, - frame->isoc_header.frame_num, - frame->isoc_header.frame_phase, - frame->isoc_header.frame_latency, - frame->isoc_header.data_format, - frame->isoc_header.format_param, - frame->isoc_header.frame_width, - frame->isoc_header.frame_height); - - if (usbvision->request_intra) { - if (frame->isoc_header.format_param & 0x80) { - found_header = 1; - usbvision->last_isoc_frame_num = -1; /* do not check for lost frames this time */ - usbvision_unrequest_intra(usbvision); - break; - } - } else { - found_header = 1; - break; - } - } - - if (found_header) { - frame->frmwidth = frame->isoc_header.frame_width * usbvision->stretch_width; - frame->frmheight = frame->isoc_header.frame_height * usbvision->stretch_height; - frame->v4l2_linesize = (frame->frmwidth * frame->v4l2_format.depth) >> 3; - } else { /* no header found */ - PDEBUG(DBG_HEADER, "skipping scratch data, no header"); - scratch_reset(usbvision); - return parse_state_end_parse; - } - - /* found header */ - if (frame->isoc_header.data_format == ISOC_MODE_COMPRESS) { - /* check isoc_header.frame_num for lost frames */ - if (usbvision->last_isoc_frame_num >= 0) { - if (((usbvision->last_isoc_frame_num + 1) % 32) != frame->isoc_header.frame_num) { - /* unexpected frame drop: need to request new intra frame */ - PDEBUG(DBG_HEADER, "Lost frame before %d on USB", frame->isoc_header.frame_num); - usbvision_request_intra(usbvision); - return parse_state_next_frame; - } - } - usbvision->last_isoc_frame_num = frame->isoc_header.frame_num; - } - usbvision->header_count++; - frame->scanstate = scan_state_lines; - frame->curline = 0; - - return parse_state_continue; -} - -static enum parse_state usbvision_parse_lines_422(struct usb_usbvision *usbvision, - long *pcopylen) -{ - volatile struct usbvision_frame *frame; - unsigned char *f; - int len; - int i; - unsigned char yuyv[4] = { 180, 128, 10, 128 }; /* YUV components */ - unsigned char rv, gv, bv; /* RGB components */ - int clipmask_index, bytes_per_pixel; - int stretch_bytes, clipmask_add; - - frame = usbvision->cur_frame; - f = frame->data + (frame->v4l2_linesize * frame->curline); - - /* Make sure there's enough data for the entire line */ - len = (frame->isoc_header.frame_width * 2) + 5; - if (scratch_len(usbvision) < len) { - PDEBUG(DBG_PARSE, "out of data in line %d, need %u.\n", frame->curline, len); - return parse_state_out; - } - - if ((frame->curline + 1) >= frame->frmheight) - return parse_state_next_frame; - - bytes_per_pixel = frame->v4l2_format.bytes_per_pixel; - stretch_bytes = (usbvision->stretch_width - 1) * bytes_per_pixel; - clipmask_index = frame->curline * MAX_FRAME_WIDTH; - clipmask_add = usbvision->stretch_width; - - for (i = 0; i < frame->frmwidth; i += (2 * usbvision->stretch_width)) { - scratch_get(usbvision, &yuyv[0], 4); - - if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { - *f++ = yuyv[0]; /* Y */ - *f++ = yuyv[3]; /* U */ - } else { - YUV_TO_RGB_BY_THE_BOOK(yuyv[0], yuyv[1], yuyv[3], rv, gv, bv); - switch (frame->v4l2_format.format) { - case V4L2_PIX_FMT_RGB565: - *f++ = (0x1F & rv) | - (0xE0 & (gv << 5)); - *f++ = (0x07 & (gv >> 3)) | - (0xF8 & bv); - break; - case V4L2_PIX_FMT_RGB24: - *f++ = rv; - *f++ = gv; - *f++ = bv; - break; - case V4L2_PIX_FMT_RGB32: - *f++ = rv; - *f++ = gv; - *f++ = bv; - f++; - break; - case V4L2_PIX_FMT_RGB555: - *f++ = (0x1F & rv) | - (0xE0 & (gv << 5)); - *f++ = (0x03 & (gv >> 3)) | - (0x7C & (bv << 2)); - break; - } - } - clipmask_index += clipmask_add; - f += stretch_bytes; - - if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { - *f++ = yuyv[2]; /* Y */ - *f++ = yuyv[1]; /* V */ - } else { - YUV_TO_RGB_BY_THE_BOOK(yuyv[2], yuyv[1], yuyv[3], rv, gv, bv); - switch (frame->v4l2_format.format) { - case V4L2_PIX_FMT_RGB565: - *f++ = (0x1F & rv) | - (0xE0 & (gv << 5)); - *f++ = (0x07 & (gv >> 3)) | - (0xF8 & bv); - break; - case V4L2_PIX_FMT_RGB24: - *f++ = rv; - *f++ = gv; - *f++ = bv; - break; - case V4L2_PIX_FMT_RGB32: - *f++ = rv; - *f++ = gv; - *f++ = bv; - f++; - break; - case V4L2_PIX_FMT_RGB555: - *f++ = (0x1F & rv) | - (0xE0 & (gv << 5)); - *f++ = (0x03 & (gv >> 3)) | - (0x7C & (bv << 2)); - break; - } - } - clipmask_index += clipmask_add; - f += stretch_bytes; - } - - frame->curline += usbvision->stretch_height; - *pcopylen += frame->v4l2_linesize * usbvision->stretch_height; - - if (frame->curline >= frame->frmheight) - return parse_state_next_frame; - return parse_state_continue; -} - -/* The decompression routine */ -static int usbvision_decompress(struct usb_usbvision *usbvision, unsigned char *compressed, - unsigned char *decompressed, int *start_pos, - int *block_typestart_pos, int len) -{ - int rest_pixel, idx, pos, extra_pos, block_len, block_type_pos, block_type_len; - unsigned char block_byte, block_code, block_type, block_type_byte, integrator; - - integrator = 0; - pos = *start_pos; - block_type_pos = *block_typestart_pos; - extra_pos = pos; - block_len = 0; - block_byte = 0; - block_code = 0; - block_type = 0; - block_type_byte = 0; - block_type_len = 0; - rest_pixel = len; - - for (idx = 0; idx < len; idx++) { - if (block_len == 0) { - if (block_type_len == 0) { - block_type_byte = compressed[block_type_pos]; - block_type_pos++; - block_type_len = 4; - } - block_type = (block_type_byte & 0xC0) >> 6; - - /* statistic: */ - usbvision->compr_block_types[block_type]++; - - pos = extra_pos; - if (block_type == 0) { - if (rest_pixel >= 24) { - idx += 23; - rest_pixel -= 24; - integrator = decompressed[idx]; - } else { - idx += rest_pixel - 1; - rest_pixel = 0; - } - } else { - block_code = compressed[pos]; - pos++; - if (rest_pixel >= 24) - block_len = 24; - else - block_len = rest_pixel; - rest_pixel -= block_len; - extra_pos = pos + (block_len / 4); - } - block_type_byte <<= 2; - block_type_len -= 1; - } - if (block_len > 0) { - if ((block_len % 4) == 0) { - block_byte = compressed[pos]; - pos++; - } - if (block_type == 1) /* inter Block */ - integrator = decompressed[idx]; - switch (block_byte & 0xC0) { - case 0x03 << 6: - integrator += compressed[extra_pos]; - extra_pos++; - break; - case 0x02 << 6: - integrator += block_code; - break; - case 0x00: - integrator -= block_code; - break; - } - decompressed[idx] = integrator; - block_byte <<= 2; - block_len -= 1; - } - } - *start_pos = extra_pos; - *block_typestart_pos = block_type_pos; - return idx; -} - - -/* - * usbvision_parse_compress() - * - * Parse compressed frame from the scratch buffer, put - * decoded RGB value into the current frame buffer and add the written - * number of bytes (RGB) to the *pcopylen. - * - */ -static enum parse_state usbvision_parse_compress(struct usb_usbvision *usbvision, - long *pcopylen) -{ -#define USBVISION_STRIP_MAGIC 0x5A -#define USBVISION_STRIP_LEN_MAX 400 -#define USBVISION_STRIP_HEADER_LEN 3 - - struct usbvision_frame *frame; - unsigned char *f, *u = NULL, *v = NULL; - unsigned char strip_data[USBVISION_STRIP_LEN_MAX]; - unsigned char strip_header[USBVISION_STRIP_HEADER_LEN]; - int idx, idx_end, strip_len, strip_ptr, startblock_pos, block_pos, block_type_pos; - int clipmask_index; - int image_size; - unsigned char rv, gv, bv; - static unsigned char *Y, *U, *V; - - frame = usbvision->cur_frame; - image_size = frame->frmwidth * frame->frmheight; - if ((frame->v4l2_format.format == V4L2_PIX_FMT_YUV422P) || - (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420)) { /* this is a planar format */ - /* ... v4l2_linesize not used here. */ - f = frame->data + (frame->width * frame->curline); - } else - f = frame->data + (frame->v4l2_linesize * frame->curline); - - if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { /* initialise u and v pointers */ - /* get base of u and b planes add halfoffset */ - u = frame->data - + image_size - + (frame->frmwidth >> 1) * frame->curline; - v = u + (image_size >> 1); - } else if (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420) { - v = frame->data + image_size + ((frame->curline * (frame->width)) >> 2); - u = v + (image_size >> 2); - } - - if (frame->curline == 0) - usbvision_adjust_compression(usbvision); - - if (scratch_len(usbvision) < USBVISION_STRIP_HEADER_LEN) - return parse_state_out; - - /* get strip header without changing the scratch_read_ptr */ - scratch_set_extra_ptr(usbvision, &strip_ptr, 0); - scratch_get_extra(usbvision, &strip_header[0], &strip_ptr, - USBVISION_STRIP_HEADER_LEN); - - if (strip_header[0] != USBVISION_STRIP_MAGIC) { - /* wrong strip magic */ - usbvision->strip_magic_errors++; - return parse_state_next_frame; - } - - if (frame->curline != (int)strip_header[2]) { - /* line number mismatch error */ - usbvision->strip_line_number_errors++; - } - - strip_len = 2 * (unsigned int)strip_header[1]; - if (strip_len > USBVISION_STRIP_LEN_MAX) { - /* strip overrun */ - /* I think this never happens */ - usbvision_request_intra(usbvision); - } - - if (scratch_len(usbvision) < strip_len) { - /* there is not enough data for the strip */ - return parse_state_out; - } - - if (usbvision->intra_frame_buffer) { - Y = usbvision->intra_frame_buffer + frame->frmwidth * frame->curline; - U = usbvision->intra_frame_buffer + image_size + (frame->frmwidth / 2) * (frame->curline / 2); - V = usbvision->intra_frame_buffer + image_size / 4 * 5 + (frame->frmwidth / 2) * (frame->curline / 2); - } else { - return parse_state_next_frame; - } - - clipmask_index = frame->curline * MAX_FRAME_WIDTH; - - scratch_get(usbvision, strip_data, strip_len); - - idx_end = frame->frmwidth; - block_type_pos = USBVISION_STRIP_HEADER_LEN; - startblock_pos = block_type_pos + (idx_end - 1) / 96 + (idx_end / 2 - 1) / 96 + 2; - block_pos = startblock_pos; - - usbvision->block_pos = block_pos; - - usbvision_decompress(usbvision, strip_data, Y, &block_pos, &block_type_pos, idx_end); - if (strip_len > usbvision->max_strip_len) - usbvision->max_strip_len = strip_len; - - if (frame->curline % 2) - usbvision_decompress(usbvision, strip_data, V, &block_pos, &block_type_pos, idx_end / 2); - else - usbvision_decompress(usbvision, strip_data, U, &block_pos, &block_type_pos, idx_end / 2); - - if (block_pos > usbvision->comprblock_pos) - usbvision->comprblock_pos = block_pos; - if (block_pos > strip_len) - usbvision->strip_len_errors++; - - for (idx = 0; idx < idx_end; idx++) { - if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { - *f++ = Y[idx]; - *f++ = idx & 0x01 ? U[idx / 2] : V[idx / 2]; - } else if (frame->v4l2_format.format == V4L2_PIX_FMT_YUV422P) { - *f++ = Y[idx]; - if (idx & 0x01) - *u++ = U[idx >> 1]; - else - *v++ = V[idx >> 1]; - } else if (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420) { - *f++ = Y[idx]; - if (!((idx & 0x01) | (frame->curline & 0x01))) { - /* only need do this for 1 in 4 pixels */ - /* intraframe buffer is YUV420 format */ - *u++ = U[idx >> 1]; - *v++ = V[idx >> 1]; - } - } else { - YUV_TO_RGB_BY_THE_BOOK(Y[idx], U[idx / 2], V[idx / 2], rv, gv, bv); - switch (frame->v4l2_format.format) { - case V4L2_PIX_FMT_GREY: - *f++ = Y[idx]; - break; - case V4L2_PIX_FMT_RGB555: - *f++ = (0x1F & rv) | - (0xE0 & (gv << 5)); - *f++ = (0x03 & (gv >> 3)) | - (0x7C & (bv << 2)); - break; - case V4L2_PIX_FMT_RGB565: - *f++ = (0x1F & rv) | - (0xE0 & (gv << 5)); - *f++ = (0x07 & (gv >> 3)) | - (0xF8 & bv); - break; - case V4L2_PIX_FMT_RGB24: - *f++ = rv; - *f++ = gv; - *f++ = bv; - break; - case V4L2_PIX_FMT_RGB32: - *f++ = rv; - *f++ = gv; - *f++ = bv; - f++; - break; - } - } - clipmask_index++; - } - /* Deal with non-integer no. of bytes for YUV420P */ - if (frame->v4l2_format.format != V4L2_PIX_FMT_YVU420) - *pcopylen += frame->v4l2_linesize; - else - *pcopylen += frame->curline & 0x01 ? frame->v4l2_linesize : frame->v4l2_linesize << 1; - - frame->curline += 1; - - if (frame->curline >= frame->frmheight) - return parse_state_next_frame; - return parse_state_continue; - -} - - -/* - * usbvision_parse_lines_420() - * - * Parse two lines from the scratch buffer, put - * decoded RGB value into the current frame buffer and add the written - * number of bytes (RGB) to the *pcopylen. - * - */ -static enum parse_state usbvision_parse_lines_420(struct usb_usbvision *usbvision, - long *pcopylen) -{ - struct usbvision_frame *frame; - unsigned char *f_even = NULL, *f_odd = NULL; - unsigned int pixel_per_line, block; - int pixel, block_split; - int y_ptr, u_ptr, v_ptr, y_odd_offset; - const int y_block_size = 128; - const int uv_block_size = 64; - const int sub_block_size = 32; - const int y_step[] = { 0, 0, 0, 2 }, y_step_size = 4; - const int uv_step[] = { 0, 0, 0, 4 }, uv_step_size = 4; - unsigned char y[2], u, v; /* YUV components */ - int y_, u_, v_, vb, uvg, ur; - int r_, g_, b_; /* RGB components */ - unsigned char g; - int clipmask_even_index, clipmask_odd_index, bytes_per_pixel; - int clipmask_add, stretch_bytes; - - frame = usbvision->cur_frame; - f_even = frame->data + (frame->v4l2_linesize * frame->curline); - f_odd = f_even + frame->v4l2_linesize * usbvision->stretch_height; - - /* Make sure there's enough data for the entire line */ - /* In this mode usbvision transfer 3 bytes for every 2 pixels */ - /* I need two lines to decode the color */ - bytes_per_pixel = frame->v4l2_format.bytes_per_pixel; - stretch_bytes = (usbvision->stretch_width - 1) * bytes_per_pixel; - clipmask_even_index = frame->curline * MAX_FRAME_WIDTH; - clipmask_odd_index = clipmask_even_index + MAX_FRAME_WIDTH; - clipmask_add = usbvision->stretch_width; - pixel_per_line = frame->isoc_header.frame_width; - - if (scratch_len(usbvision) < (int)pixel_per_line * 3) { - /* printk(KERN_DEBUG "out of data, need %d\n", len); */ - return parse_state_out; - } - - if ((frame->curline + 1) >= frame->frmheight) - return parse_state_next_frame; - - block_split = (pixel_per_line%y_block_size) ? 1 : 0; /* are some blocks split into different lines? */ - - y_odd_offset = (pixel_per_line / y_block_size) * (y_block_size + uv_block_size) - + block_split * uv_block_size; - - scratch_set_extra_ptr(usbvision, &y_ptr, y_odd_offset); - scratch_set_extra_ptr(usbvision, &u_ptr, y_block_size); - scratch_set_extra_ptr(usbvision, &v_ptr, y_odd_offset - + (4 - block_split) * sub_block_size); - - for (block = 0; block < (pixel_per_line / sub_block_size); block++) { - for (pixel = 0; pixel < sub_block_size; pixel += 2) { - scratch_get(usbvision, &y[0], 2); - scratch_get_extra(usbvision, &u, &u_ptr, 1); - scratch_get_extra(usbvision, &v, &v_ptr, 1); - - /* I don't use the YUV_TO_RGB macro for better performance */ - v_ = v - 128; - u_ = u - 128; - vb = 132252 * v_; - uvg = -53281 * u_ - 25625 * v_; - ur = 104595 * u_; - - if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { - *f_even++ = y[0]; - *f_even++ = v; - } else { - y_ = 76284 * (y[0] - 16); - - b_ = (y_ + vb) >> 16; - g_ = (y_ + uvg) >> 16; - r_ = (y_ + ur) >> 16; - - switch (frame->v4l2_format.format) { - case V4L2_PIX_FMT_RGB565: - g = LIMIT_RGB(g_); - *f_even++ = - (0x1F & LIMIT_RGB(r_)) | - (0xE0 & (g << 5)); - *f_even++ = - (0x07 & (g >> 3)) | - (0xF8 & LIMIT_RGB(b_)); - break; - case V4L2_PIX_FMT_RGB24: - *f_even++ = LIMIT_RGB(r_); - *f_even++ = LIMIT_RGB(g_); - *f_even++ = LIMIT_RGB(b_); - break; - case V4L2_PIX_FMT_RGB32: - *f_even++ = LIMIT_RGB(r_); - *f_even++ = LIMIT_RGB(g_); - *f_even++ = LIMIT_RGB(b_); - f_even++; - break; - case V4L2_PIX_FMT_RGB555: - g = LIMIT_RGB(g_); - *f_even++ = (0x1F & LIMIT_RGB(r_)) | - (0xE0 & (g << 5)); - *f_even++ = (0x03 & (g >> 3)) | - (0x7C & (LIMIT_RGB(b_) << 2)); - break; - } - } - clipmask_even_index += clipmask_add; - f_even += stretch_bytes; - - if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { - *f_even++ = y[1]; - *f_even++ = u; - } else { - y_ = 76284 * (y[1] - 16); - - b_ = (y_ + vb) >> 16; - g_ = (y_ + uvg) >> 16; - r_ = (y_ + ur) >> 16; - - switch (frame->v4l2_format.format) { - case V4L2_PIX_FMT_RGB565: - g = LIMIT_RGB(g_); - *f_even++ = - (0x1F & LIMIT_RGB(r_)) | - (0xE0 & (g << 5)); - *f_even++ = - (0x07 & (g >> 3)) | - (0xF8 & LIMIT_RGB(b_)); - break; - case V4L2_PIX_FMT_RGB24: - *f_even++ = LIMIT_RGB(r_); - *f_even++ = LIMIT_RGB(g_); - *f_even++ = LIMIT_RGB(b_); - break; - case V4L2_PIX_FMT_RGB32: - *f_even++ = LIMIT_RGB(r_); - *f_even++ = LIMIT_RGB(g_); - *f_even++ = LIMIT_RGB(b_); - f_even++; - break; - case V4L2_PIX_FMT_RGB555: - g = LIMIT_RGB(g_); - *f_even++ = (0x1F & LIMIT_RGB(r_)) | - (0xE0 & (g << 5)); - *f_even++ = (0x03 & (g >> 3)) | - (0x7C & (LIMIT_RGB(b_) << 2)); - break; - } - } - clipmask_even_index += clipmask_add; - f_even += stretch_bytes; - - scratch_get_extra(usbvision, &y[0], &y_ptr, 2); - - if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { - *f_odd++ = y[0]; - *f_odd++ = v; - } else { - y_ = 76284 * (y[0] - 16); - - b_ = (y_ + vb) >> 16; - g_ = (y_ + uvg) >> 16; - r_ = (y_ + ur) >> 16; - - switch (frame->v4l2_format.format) { - case V4L2_PIX_FMT_RGB565: - g = LIMIT_RGB(g_); - *f_odd++ = - (0x1F & LIMIT_RGB(r_)) | - (0xE0 & (g << 5)); - *f_odd++ = - (0x07 & (g >> 3)) | - (0xF8 & LIMIT_RGB(b_)); - break; - case V4L2_PIX_FMT_RGB24: - *f_odd++ = LIMIT_RGB(r_); - *f_odd++ = LIMIT_RGB(g_); - *f_odd++ = LIMIT_RGB(b_); - break; - case V4L2_PIX_FMT_RGB32: - *f_odd++ = LIMIT_RGB(r_); - *f_odd++ = LIMIT_RGB(g_); - *f_odd++ = LIMIT_RGB(b_); - f_odd++; - break; - case V4L2_PIX_FMT_RGB555: - g = LIMIT_RGB(g_); - *f_odd++ = (0x1F & LIMIT_RGB(r_)) | - (0xE0 & (g << 5)); - *f_odd++ = (0x03 & (g >> 3)) | - (0x7C & (LIMIT_RGB(b_) << 2)); - break; - } - } - clipmask_odd_index += clipmask_add; - f_odd += stretch_bytes; - - if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { - *f_odd++ = y[1]; - *f_odd++ = u; - } else { - y_ = 76284 * (y[1] - 16); - - b_ = (y_ + vb) >> 16; - g_ = (y_ + uvg) >> 16; - r_ = (y_ + ur) >> 16; - - switch (frame->v4l2_format.format) { - case V4L2_PIX_FMT_RGB565: - g = LIMIT_RGB(g_); - *f_odd++ = - (0x1F & LIMIT_RGB(r_)) | - (0xE0 & (g << 5)); - *f_odd++ = - (0x07 & (g >> 3)) | - (0xF8 & LIMIT_RGB(b_)); - break; - case V4L2_PIX_FMT_RGB24: - *f_odd++ = LIMIT_RGB(r_); - *f_odd++ = LIMIT_RGB(g_); - *f_odd++ = LIMIT_RGB(b_); - break; - case V4L2_PIX_FMT_RGB32: - *f_odd++ = LIMIT_RGB(r_); - *f_odd++ = LIMIT_RGB(g_); - *f_odd++ = LIMIT_RGB(b_); - f_odd++; - break; - case V4L2_PIX_FMT_RGB555: - g = LIMIT_RGB(g_); - *f_odd++ = (0x1F & LIMIT_RGB(r_)) | - (0xE0 & (g << 5)); - *f_odd++ = (0x03 & (g >> 3)) | - (0x7C & (LIMIT_RGB(b_) << 2)); - break; - } - } - clipmask_odd_index += clipmask_add; - f_odd += stretch_bytes; - } - - scratch_rm_old(usbvision, y_step[block % y_step_size] * sub_block_size); - scratch_inc_extra_ptr(&y_ptr, y_step[(block + 2 * block_split) % y_step_size] - * sub_block_size); - scratch_inc_extra_ptr(&u_ptr, uv_step[block % uv_step_size] - * sub_block_size); - scratch_inc_extra_ptr(&v_ptr, uv_step[(block + 2 * block_split) % uv_step_size] - * sub_block_size); - } - - scratch_rm_old(usbvision, pixel_per_line * 3 / 2 - + block_split * sub_block_size); - - frame->curline += 2 * usbvision->stretch_height; - *pcopylen += frame->v4l2_linesize * 2 * usbvision->stretch_height; - - if (frame->curline >= frame->frmheight) - return parse_state_next_frame; - return parse_state_continue; -} - -/* - * usbvision_parse_data() - * - * Generic routine to parse the scratch buffer. It employs either - * usbvision_find_header() or usbvision_parse_lines() to do most - * of work. - * - */ -static void usbvision_parse_data(struct usb_usbvision *usbvision) -{ - struct usbvision_frame *frame; - enum parse_state newstate; - long copylen = 0; - unsigned long lock_flags; - - frame = usbvision->cur_frame; - - PDEBUG(DBG_PARSE, "parsing len=%d\n", scratch_len(usbvision)); - - while (1) { - newstate = parse_state_out; - if (scratch_len(usbvision)) { - if (frame->scanstate == scan_state_scanning) { - newstate = usbvision_find_header(usbvision); - } else if (frame->scanstate == scan_state_lines) { - if (usbvision->isoc_mode == ISOC_MODE_YUV420) - newstate = usbvision_parse_lines_420(usbvision, ©len); - else if (usbvision->isoc_mode == ISOC_MODE_YUV422) - newstate = usbvision_parse_lines_422(usbvision, ©len); - else if (usbvision->isoc_mode == ISOC_MODE_COMPRESS) - newstate = usbvision_parse_compress(usbvision, ©len); - } - } - if (newstate == parse_state_continue) - continue; - if ((newstate == parse_state_next_frame) || (newstate == parse_state_out)) - break; - return; /* parse_state_end_parse */ - } - - if (newstate == parse_state_next_frame) { - frame->grabstate = frame_state_done; - frame->ts = ktime_get_ns(); - frame->sequence = usbvision->frame_num; - - spin_lock_irqsave(&usbvision->queue_lock, lock_flags); - list_move_tail(&(frame->frame), &usbvision->outqueue); - usbvision->cur_frame = NULL; - spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags); - - usbvision->frame_num++; - - /* This will cause the process to request another frame. */ - if (waitqueue_active(&usbvision->wait_frame)) { - PDEBUG(DBG_PARSE, "Wake up !"); - wake_up_interruptible(&usbvision->wait_frame); - } - } else { - frame->grabstate = frame_state_grabbing; - } - - /* Update the frame's uncompressed length. */ - frame->scanlength += copylen; -} - - -/* - * Make all of the blocks of data contiguous - */ -static int usbvision_compress_isochronous(struct usb_usbvision *usbvision, - struct urb *urb) -{ - unsigned char *packet_data; - int i, totlen = 0; - - for (i = 0; i < urb->number_of_packets; i++) { - int packet_len = urb->iso_frame_desc[i].actual_length; - int packet_stat = urb->iso_frame_desc[i].status; - - packet_data = urb->transfer_buffer + urb->iso_frame_desc[i].offset; - - /* Detect and ignore errored packets */ - if (packet_stat) { /* packet_stat != 0 ????????????? */ - PDEBUG(DBG_ISOC, "data error: [%d] len=%d, status=%X", i, packet_len, packet_stat); - usbvision->isoc_err_count++; - continue; - } - - /* Detect and ignore empty packets */ - if (packet_len < 0) { - PDEBUG(DBG_ISOC, "error packet [%d]", i); - usbvision->isoc_skip_count++; - continue; - } else if (packet_len == 0) { /* Frame end ????? */ - PDEBUG(DBG_ISOC, "null packet [%d]", i); - usbvision->isocstate = isoc_state_no_frame; - usbvision->isoc_skip_count++; - continue; - } else if (packet_len > usbvision->isoc_packet_size) { - PDEBUG(DBG_ISOC, "packet[%d] > isoc_packet_size", i); - usbvision->isoc_skip_count++; - continue; - } - - PDEBUG(DBG_ISOC, "packet ok [%d] len=%d", i, packet_len); - - if (usbvision->isocstate == isoc_state_no_frame) { /* new frame begins */ - usbvision->isocstate = isoc_state_in_frame; - scratch_mark_header(usbvision); - usbvision_measure_bandwidth(usbvision); - PDEBUG(DBG_ISOC, "packet with header"); - } - - /* - * If usbvision continues to feed us with data but there is no - * consumption (if, for example, V4L client fell asleep) we - * may overflow the buffer. We have to move old data over to - * free room for new data. This is bad for old data. If we - * just drop new data then it's bad for new data... choose - * your favorite evil here. - */ - if (scratch_free(usbvision) < packet_len) { - usbvision->scratch_ovf_count++; - PDEBUG(DBG_ISOC, "scratch buf overflow! scr_len: %d, n: %d", - scratch_len(usbvision), packet_len); - scratch_rm_old(usbvision, packet_len - scratch_free(usbvision)); - } - - /* Now we know that there is enough room in scratch buffer */ - scratch_put(usbvision, packet_data, packet_len); - totlen += packet_len; - usbvision->isoc_data_count += packet_len; - usbvision->isoc_packet_count++; - } -#if ENABLE_HEXDUMP - if (totlen > 0) { - static int foo; - - if (foo < 1) { - printk(KERN_DEBUG "+%d.\n", usbvision->scratchlen); - usbvision_hexdump(data0, (totlen > 64) ? 64 : totlen); - ++foo; - } - } -#endif - return totlen; -} - -static void usbvision_isoc_irq(struct urb *urb) -{ - int err_code = 0; - int len; - struct usb_usbvision *usbvision = urb->context; - int i; - struct usbvision_frame **f; - - /* We don't want to do anything if we are about to be removed! */ - if (!USBVISION_IS_OPERATIONAL(usbvision)) - return; - - /* any urb with wrong status is ignored without acknowledgment */ - if (urb->status == -ENOENT) - return; - - f = &usbvision->cur_frame; - - /* Manage streaming interruption */ - if (usbvision->streaming == stream_interrupt) { - usbvision->streaming = stream_idle; - if ((*f)) { - (*f)->grabstate = frame_state_ready; - (*f)->scanstate = scan_state_scanning; - } - PDEBUG(DBG_IRQ, "stream interrupted"); - wake_up_interruptible(&usbvision->wait_stream); - } - - /* Copy the data received into our scratch buffer */ - len = usbvision_compress_isochronous(usbvision, urb); - - usbvision->isoc_urb_count++; - usbvision->urb_length = len; - - if (usbvision->streaming == stream_on) { - /* If we collected enough data let's parse! */ - if (scratch_len(usbvision) > USBVISION_HEADER_LENGTH && - !list_empty(&(usbvision->inqueue))) { - if (!(*f)) { - (*f) = list_entry(usbvision->inqueue.next, - struct usbvision_frame, - frame); - } - usbvision_parse_data(usbvision); - } else { - /* If we don't have a frame - we're current working on, complain */ - PDEBUG(DBG_IRQ, - "received data, but no one needs it"); - scratch_reset(usbvision); - } - } else { - PDEBUG(DBG_IRQ, "received data, but no one needs it"); - scratch_reset(usbvision); - } - - for (i = 0; i < USBVISION_URB_FRAMES; i++) { - urb->iso_frame_desc[i].status = 0; - urb->iso_frame_desc[i].actual_length = 0; - } - - urb->status = 0; - urb->dev = usbvision->dev; - err_code = usb_submit_urb(urb, GFP_ATOMIC); - - if (err_code) { - dev_err(&usbvision->dev->dev, - "%s: usb_submit_urb failed: error %d\n", - __func__, err_code); - } - - return; -} - -/*************************************/ -/* Low level usbvision access functions */ -/*************************************/ - -/* - * usbvision_read_reg() - * - * return < 0 -> Error - * >= 0 -> Data - */ - -int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg) -{ - int err_code = 0; - unsigned char *buffer = usbvision->ctrl_urb_buffer; - - if (!USBVISION_IS_OPERATIONAL(usbvision)) - return -1; - - err_code = usb_control_msg(usbvision->dev, usb_rcvctrlpipe(usbvision->dev, 1), - USBVISION_OP_CODE, - USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT, - 0, (__u16) reg, buffer, 1, HZ); - - if (err_code < 0) { - dev_err(&usbvision->dev->dev, - "%s: failed: error %d\n", __func__, err_code); - return err_code; - } - return buffer[0]; -} - -/* - * usbvision_write_reg() - * - * return 1 -> Reg written - * 0 -> usbvision is not yet ready - * -1 -> Something went wrong - */ - -int usbvision_write_reg(struct usb_usbvision *usbvision, unsigned char reg, - unsigned char value) -{ - int err_code = 0; - - if (!USBVISION_IS_OPERATIONAL(usbvision)) - return 0; - - usbvision->ctrl_urb_buffer[0] = value; - err_code = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), - USBVISION_OP_CODE, - USB_DIR_OUT | USB_TYPE_VENDOR | - USB_RECIP_ENDPOINT, 0, (__u16) reg, - usbvision->ctrl_urb_buffer, 1, HZ); - - if (err_code < 0) { - dev_err(&usbvision->dev->dev, - "%s: failed: error %d\n", __func__, err_code); - } - return err_code; -} - - -static void usbvision_ctrl_urb_complete(struct urb *urb) -{ - struct usb_usbvision *usbvision = (struct usb_usbvision *)urb->context; - - PDEBUG(DBG_IRQ, ""); - usbvision->ctrl_urb_busy = 0; -} - - -static int usbvision_write_reg_irq(struct usb_usbvision *usbvision, int address, - unsigned char *data, int len) -{ - int err_code = 0; - - PDEBUG(DBG_IRQ, ""); - if (len > 8) - return -EFAULT; - if (usbvision->ctrl_urb_busy) - return -EBUSY; - usbvision->ctrl_urb_busy = 1; - - usbvision->ctrl_urb_setup.bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT; - usbvision->ctrl_urb_setup.bRequest = USBVISION_OP_CODE; - usbvision->ctrl_urb_setup.wValue = 0; - usbvision->ctrl_urb_setup.wIndex = cpu_to_le16(address); - usbvision->ctrl_urb_setup.wLength = cpu_to_le16(len); - usb_fill_control_urb(usbvision->ctrl_urb, usbvision->dev, - usb_sndctrlpipe(usbvision->dev, 1), - (unsigned char *)&usbvision->ctrl_urb_setup, - (void *)usbvision->ctrl_urb_buffer, len, - usbvision_ctrl_urb_complete, - (void *)usbvision); - - memcpy(usbvision->ctrl_urb_buffer, data, len); - - err_code = usb_submit_urb(usbvision->ctrl_urb, GFP_ATOMIC); - if (err_code < 0) { - /* error in usb_submit_urb() */ - usbvision->ctrl_urb_busy = 0; - } - PDEBUG(DBG_IRQ, "submit %d byte: error %d", len, err_code); - return err_code; -} - - -static int usbvision_init_compression(struct usb_usbvision *usbvision) -{ - usbvision->last_isoc_frame_num = -1; - usbvision->isoc_data_count = 0; - usbvision->isoc_packet_count = 0; - usbvision->isoc_skip_count = 0; - usbvision->compr_level = 50; - usbvision->last_compr_level = -1; - usbvision->isoc_urb_count = 0; - usbvision->request_intra = 1; - usbvision->isoc_measure_bandwidth_count = 0; - - return 0; -} - -/* this function measures the used bandwidth since last call - * return: 0 : no error - * sets used_bandwidth to 1-100 : 1-100% of full bandwidth resp. to isoc_packet_size - */ -static int usbvision_measure_bandwidth(struct usb_usbvision *usbvision) -{ - if (usbvision->isoc_measure_bandwidth_count < 2) { /* this gives an average bandwidth of 3 frames */ - usbvision->isoc_measure_bandwidth_count++; - return 0; - } - if ((usbvision->isoc_packet_size > 0) && (usbvision->isoc_packet_count > 0)) { - usbvision->used_bandwidth = usbvision->isoc_data_count / - (usbvision->isoc_packet_count + usbvision->isoc_skip_count) * - 100 / usbvision->isoc_packet_size; - } - usbvision->isoc_measure_bandwidth_count = 0; - usbvision->isoc_data_count = 0; - usbvision->isoc_packet_count = 0; - usbvision->isoc_skip_count = 0; - return 0; -} - -static int usbvision_adjust_compression(struct usb_usbvision *usbvision) -{ - int err_code = 0; - unsigned char buffer[6]; - - PDEBUG(DBG_IRQ, ""); - if ((adjust_compression) && (usbvision->used_bandwidth > 0)) { - usbvision->compr_level += (usbvision->used_bandwidth - 90) / 2; - RESTRICT_TO_RANGE(usbvision->compr_level, 0, 100); - if (usbvision->compr_level != usbvision->last_compr_level) { - int distortion; - - if (usbvision->bridge_type == BRIDGE_NT1004 || usbvision->bridge_type == BRIDGE_NT1005) { - buffer[0] = (unsigned char)(4 + 16 * usbvision->compr_level / 100); /* PCM Threshold 1 */ - buffer[1] = (unsigned char)(4 + 8 * usbvision->compr_level / 100); /* PCM Threshold 2 */ - distortion = 7 + 248 * usbvision->compr_level / 100; - buffer[2] = (unsigned char)(distortion & 0xFF); /* Average distortion Threshold (inter) */ - buffer[3] = (unsigned char)(distortion & 0xFF); /* Average distortion Threshold (intra) */ - distortion = 1 + 42 * usbvision->compr_level / 100; - buffer[4] = (unsigned char)(distortion & 0xFF); /* Maximum distortion Threshold (inter) */ - buffer[5] = (unsigned char)(distortion & 0xFF); /* Maximum distortion Threshold (intra) */ - } else { /* BRIDGE_NT1003 */ - buffer[0] = (unsigned char)(4 + 16 * usbvision->compr_level / 100); /* PCM threshold 1 */ - buffer[1] = (unsigned char)(4 + 8 * usbvision->compr_level / 100); /* PCM threshold 2 */ - distortion = 2 + 253 * usbvision->compr_level / 100; - buffer[2] = (unsigned char)(distortion & 0xFF); /* distortion threshold bit0-7 */ - buffer[3] = 0; /* (unsigned char)((distortion >> 8) & 0x0F); distortion threshold bit 8-11 */ - distortion = 0 + 43 * usbvision->compr_level / 100; - buffer[4] = (unsigned char)(distortion & 0xFF); /* maximum distortion bit0-7 */ - buffer[5] = 0; /* (unsigned char)((distortion >> 8) & 0x01); maximum distortion bit 8 */ - } - err_code = usbvision_write_reg_irq(usbvision, USBVISION_PCM_THR1, buffer, 6); - if (err_code == 0) { - PDEBUG(DBG_IRQ, "new compr params %#02x %#02x %#02x %#02x %#02x %#02x", buffer[0], - buffer[1], buffer[2], buffer[3], buffer[4], buffer[5]); - usbvision->last_compr_level = usbvision->compr_level; - } - } - } - return err_code; -} - -static int usbvision_request_intra(struct usb_usbvision *usbvision) -{ - unsigned char buffer[1]; - - PDEBUG(DBG_IRQ, ""); - usbvision->request_intra = 1; - buffer[0] = 1; - usbvision_write_reg_irq(usbvision, USBVISION_FORCE_INTRA, buffer, 1); - return 0; -} - -static int usbvision_unrequest_intra(struct usb_usbvision *usbvision) -{ - unsigned char buffer[1]; - - PDEBUG(DBG_IRQ, ""); - usbvision->request_intra = 0; - buffer[0] = 0; - usbvision_write_reg_irq(usbvision, USBVISION_FORCE_INTRA, buffer, 1); - return 0; -} - -/******************************* - * usbvision utility functions - *******************************/ - -int usbvision_power_off(struct usb_usbvision *usbvision) -{ - int err_code = 0; - - PDEBUG(DBG_FUNC, ""); - - err_code = usbvision_write_reg(usbvision, USBVISION_PWR_REG, USBVISION_SSPND_EN); - if (err_code == 1) - usbvision->power = 0; - PDEBUG(DBG_FUNC, "%s: err_code %d", (err_code != 1) ? "ERROR" : "power is off", err_code); - return err_code; -} - -/* configure webcam image sensor using the serial port */ -static int usbvision_init_webcam(struct usb_usbvision *usbvision) -{ - int rc; - int i; - static char init_values[38][3] = { - { 0x04, 0x12, 0x08 }, { 0x05, 0xff, 0xc8 }, { 0x06, 0x18, 0x07 }, { 0x07, 0x90, 0x00 }, - { 0x09, 0x00, 0x00 }, { 0x0a, 0x00, 0x00 }, { 0x0b, 0x08, 0x00 }, { 0x0d, 0xcc, 0xcc }, - { 0x0e, 0x13, 0x14 }, { 0x10, 0x9b, 0x83 }, { 0x11, 0x5a, 0x3f }, { 0x12, 0xe4, 0x73 }, - { 0x13, 0x88, 0x84 }, { 0x14, 0x89, 0x80 }, { 0x15, 0x00, 0x20 }, { 0x16, 0x00, 0x00 }, - { 0x17, 0xff, 0xa0 }, { 0x18, 0x6b, 0x20 }, { 0x19, 0x22, 0x40 }, { 0x1a, 0x10, 0x07 }, - { 0x1b, 0x00, 0x47 }, { 0x1c, 0x03, 0xe0 }, { 0x1d, 0x00, 0x00 }, { 0x1e, 0x00, 0x00 }, - { 0x1f, 0x00, 0x00 }, { 0x20, 0x00, 0x00 }, { 0x21, 0x00, 0x00 }, { 0x22, 0x00, 0x00 }, - { 0x23, 0x00, 0x00 }, { 0x24, 0x00, 0x00 }, { 0x25, 0x00, 0x00 }, { 0x26, 0x00, 0x00 }, - { 0x27, 0x00, 0x00 }, { 0x28, 0x00, 0x00 }, { 0x29, 0x00, 0x00 }, { 0x08, 0x80, 0x60 }, - { 0x0f, 0x2d, 0x24 }, { 0x0c, 0x80, 0x80 } - }; - unsigned char *value = usbvision->ctrl_urb_buffer; - - /* the only difference between PAL and NTSC init_values */ - if (usbvision_device_data[usbvision->dev_model].video_norm == V4L2_STD_NTSC) - init_values[4][1] = 0x34; - - for (i = 0; i < sizeof(init_values) / 3; i++) { - usbvision_write_reg(usbvision, USBVISION_SER_MODE, USBVISION_SER_MODE_SOFT); - memcpy(value, init_values[i], 3); - rc = usb_control_msg(usbvision->dev, - usb_sndctrlpipe(usbvision->dev, 1), - USBVISION_OP_CODE, - USB_DIR_OUT | USB_TYPE_VENDOR | - USB_RECIP_ENDPOINT, 0, - (__u16) USBVISION_SER_DAT1, value, - 3, HZ); - if (rc < 0) - return rc; - usbvision_write_reg(usbvision, USBVISION_SER_MODE, USBVISION_SER_MODE_SIO); - /* write 3 bytes to the serial port using SIO mode */ - usbvision_write_reg(usbvision, USBVISION_SER_CONT, 3 | 0x10); - usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, 0); - usbvision_write_reg(usbvision, USBVISION_SER_MODE, USBVISION_SER_MODE_SOFT); - usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, USBVISION_IO_2); - usbvision_write_reg(usbvision, USBVISION_SER_MODE, USBVISION_SER_MODE_SOFT | USBVISION_CLK_OUT); - usbvision_write_reg(usbvision, USBVISION_SER_MODE, USBVISION_SER_MODE_SOFT | USBVISION_DAT_IO); - usbvision_write_reg(usbvision, USBVISION_SER_MODE, USBVISION_SER_MODE_SOFT | USBVISION_CLK_OUT | USBVISION_DAT_IO); - } - - return 0; -} - -/* - * usbvision_set_video_format() - * - */ -static int usbvision_set_video_format(struct usb_usbvision *usbvision, int format) -{ - static const char proc[] = "usbvision_set_video_format"; - unsigned char *value = usbvision->ctrl_urb_buffer; - int rc; - - if (!USBVISION_IS_OPERATIONAL(usbvision)) - return 0; - - PDEBUG(DBG_FUNC, "isoc_mode %#02x", format); - - if ((format != ISOC_MODE_YUV422) - && (format != ISOC_MODE_YUV420) - && (format != ISOC_MODE_COMPRESS)) { - printk(KERN_ERR "usbvision: unknown video format %02x, using default YUV420", - format); - format = ISOC_MODE_YUV420; - } - value[0] = 0x0A; /* TODO: See the effect of the filter */ - value[1] = format; /* Sets the VO_MODE register which follows FILT_CONT */ - rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), - USBVISION_OP_CODE, - USB_DIR_OUT | USB_TYPE_VENDOR | - USB_RECIP_ENDPOINT, 0, - (__u16) USBVISION_FILT_CONT, value, 2, HZ); - - if (rc < 0) { - printk(KERN_ERR "%s: ERROR=%d. USBVISION stopped - reconnect or reload driver.\n", - proc, rc); - } - usbvision->isoc_mode = format; - return rc; -} - -/* - * usbvision_set_output() - * - */ - -int usbvision_set_output(struct usb_usbvision *usbvision, int width, - int height) -{ - int err_code = 0; - int usb_width, usb_height; - unsigned int frame_rate = 0, frame_drop = 0; - unsigned char *value = usbvision->ctrl_urb_buffer; - - if (!USBVISION_IS_OPERATIONAL(usbvision)) - return 0; - - if (width > MAX_USB_WIDTH) { - usb_width = width / 2; - usbvision->stretch_width = 2; - } else { - usb_width = width; - usbvision->stretch_width = 1; - } - - if (height > MAX_USB_HEIGHT) { - usb_height = height / 2; - usbvision->stretch_height = 2; - } else { - usb_height = height; - usbvision->stretch_height = 1; - } - - RESTRICT_TO_RANGE(usb_width, MIN_FRAME_WIDTH, MAX_USB_WIDTH); - usb_width &= ~(MIN_FRAME_WIDTH-1); - RESTRICT_TO_RANGE(usb_height, MIN_FRAME_HEIGHT, MAX_USB_HEIGHT); - usb_height &= ~(1); - - PDEBUG(DBG_FUNC, "usb %dx%d; screen %dx%d; stretch %dx%d", - usb_width, usb_height, width, height, - usbvision->stretch_width, usbvision->stretch_height); - - /* I'll not rewrite the same values */ - if ((usb_width != usbvision->curwidth) || (usb_height != usbvision->curheight)) { - value[0] = usb_width & 0xff; /* LSB */ - value[1] = (usb_width >> 8) & 0x03; /* MSB */ - value[2] = usb_height & 0xff; /* LSB */ - value[3] = (usb_height >> 8) & 0x03; /* MSB */ - - err_code = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), - USBVISION_OP_CODE, - USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT, - 0, (__u16) USBVISION_LXSIZE_O, value, 4, HZ); - - if (err_code < 0) { - dev_err(&usbvision->dev->dev, - "%s failed: error %d\n", __func__, err_code); - return err_code; - } - usbvision->curwidth = usbvision->stretch_width * usb_width; - usbvision->curheight = usbvision->stretch_height * usb_height; - } - - if (usbvision->isoc_mode == ISOC_MODE_YUV422) - frame_rate = (usbvision->isoc_packet_size * 1000) / (usb_width * usb_height * 2); - else if (usbvision->isoc_mode == ISOC_MODE_YUV420) - frame_rate = (usbvision->isoc_packet_size * 1000) / ((usb_width * usb_height * 12) / 8); - else - frame_rate = FRAMERATE_MAX; - - if (usbvision->tvnorm_id & V4L2_STD_625_50) - frame_drop = frame_rate * 32 / 25 - 1; - else if (usbvision->tvnorm_id & V4L2_STD_525_60) - frame_drop = frame_rate * 32 / 30 - 1; - - RESTRICT_TO_RANGE(frame_drop, FRAMERATE_MIN, FRAMERATE_MAX); - - PDEBUG(DBG_FUNC, "frame_rate %d fps, frame_drop %d", frame_rate, frame_drop); - - frame_drop = FRAMERATE_MAX; /* We can allow the maximum here, because dropping is controlled */ - - if (usbvision_device_data[usbvision->dev_model].codec == CODEC_WEBCAM) { - if (usbvision_device_data[usbvision->dev_model].video_norm == V4L2_STD_PAL) - frame_drop = 25; - else - frame_drop = 30; - } - - /* frame_drop = 7; => frame_phase = 1, 5, 9, 13, 17, 21, 25, 0, 4, 8, ... - => frame_skip = 4; - => frame_rate = (7 + 1) * 25 / 32 = 200 / 32 = 6.25; - - frame_drop = 9; => frame_phase = 1, 5, 8, 11, 14, 17, 21, 24, 27, 1, 4, 8, ... - => frame_skip = 4, 3, 3, 3, 3, 4, 3, 3, 3, 3, 4, ... - => frame_rate = (9 + 1) * 25 / 32 = 250 / 32 = 7.8125; - */ - err_code = usbvision_write_reg(usbvision, USBVISION_FRM_RATE, frame_drop); - return err_code; -} - - -/* - * usbvision_frames_alloc - * allocate the required frames - */ -int usbvision_frames_alloc(struct usb_usbvision *usbvision, int number_of_frames) -{ - int i; - - /* needs to be page aligned cause the buffers can be mapped individually! */ - usbvision->max_frame_size = PAGE_ALIGN(usbvision->curwidth * - usbvision->curheight * - usbvision->palette.bytes_per_pixel); - - /* Try to do my best to allocate the frames the user want in the remaining memory */ - usbvision->num_frames = number_of_frames; - while (usbvision->num_frames > 0) { - usbvision->fbuf_size = usbvision->num_frames * usbvision->max_frame_size; - usbvision->fbuf = usbvision_rvmalloc(usbvision->fbuf_size); - if (usbvision->fbuf) - break; - usbvision->num_frames--; - } - - /* Allocate all buffers */ - for (i = 0; i < usbvision->num_frames; i++) { - usbvision->frame[i].index = i; - usbvision->frame[i].grabstate = frame_state_unused; - usbvision->frame[i].data = usbvision->fbuf + - i * usbvision->max_frame_size; - /* - * Set default sizes for read operation. - */ - usbvision->stretch_width = 1; - usbvision->stretch_height = 1; - usbvision->frame[i].width = usbvision->curwidth; - usbvision->frame[i].height = usbvision->curheight; - usbvision->frame[i].bytes_read = 0; - } - PDEBUG(DBG_FUNC, "allocated %d frames (%d bytes per frame)", - usbvision->num_frames, usbvision->max_frame_size); - return usbvision->num_frames; -} - -/* - * usbvision_frames_free - * frees memory allocated for the frames - */ -void usbvision_frames_free(struct usb_usbvision *usbvision) -{ - /* Have to free all that memory */ - PDEBUG(DBG_FUNC, "free %d frames", usbvision->num_frames); - - if (usbvision->fbuf != NULL) { - usbvision_rvfree(usbvision->fbuf, usbvision->fbuf_size); - usbvision->fbuf = NULL; - - usbvision->num_frames = 0; - } -} -/* - * usbvision_empty_framequeues() - * prepare queues for incoming and outgoing frames - */ -void usbvision_empty_framequeues(struct usb_usbvision *usbvision) -{ - u32 i; - - INIT_LIST_HEAD(&(usbvision->inqueue)); - INIT_LIST_HEAD(&(usbvision->outqueue)); - - for (i = 0; i < USBVISION_NUMFRAMES; i++) { - usbvision->frame[i].grabstate = frame_state_unused; - usbvision->frame[i].bytes_read = 0; - } -} - -/* - * usbvision_stream_interrupt() - * stops streaming - */ -int usbvision_stream_interrupt(struct usb_usbvision *usbvision) -{ - int ret = 0; - - /* stop reading from the device */ - - usbvision->streaming = stream_interrupt; - ret = wait_event_timeout(usbvision->wait_stream, - (usbvision->streaming == stream_idle), - msecs_to_jiffies(USBVISION_NUMSBUF*USBVISION_URB_FRAMES)); - return ret; -} - -/* - * usbvision_set_compress_params() - * - */ - -static int usbvision_set_compress_params(struct usb_usbvision *usbvision) -{ - static const char proc[] = "usbvision_set_compression_params: "; - int rc; - unsigned char *value = usbvision->ctrl_urb_buffer; - - value[0] = 0x0F; /* Intra-Compression cycle */ - value[1] = 0x01; /* Reg.45 one line per strip */ - value[2] = 0x00; /* Reg.46 Force intra mode on all new frames */ - value[3] = 0x00; /* Reg.47 FORCE_UP <- 0 normal operation (not force) */ - value[4] = 0xA2; /* Reg.48 BUF_THR I'm not sure if this does something in not compressed mode. */ - value[5] = 0x00; /* Reg.49 DVI_YUV This has nothing to do with compression */ - - /* caught values for NT1004 */ - /* value[0] = 0xFF; Never apply intra mode automatically */ - /* value[1] = 0xF1; Use full frame height for virtual strip width; One line per strip */ - /* value[2] = 0x01; Force intra mode on all new frames */ - /* value[3] = 0x00; Strip size 400 Bytes; do not force up */ - /* value[4] = 0xA2; */ - if (!USBVISION_IS_OPERATIONAL(usbvision)) - return 0; - - rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), - USBVISION_OP_CODE, - USB_DIR_OUT | USB_TYPE_VENDOR | - USB_RECIP_ENDPOINT, 0, - (__u16) USBVISION_INTRA_CYC, value, 5, HZ); - - if (rc < 0) { - printk(KERN_ERR "%sERROR=%d. USBVISION stopped - reconnect or reload driver.\n", - proc, rc); - return rc; - } - - if (usbvision->bridge_type == BRIDGE_NT1004) { - value[0] = 20; /* PCM Threshold 1 */ - value[1] = 12; /* PCM Threshold 2 */ - value[2] = 255; /* Distortion Threshold inter */ - value[3] = 255; /* Distortion Threshold intra */ - value[4] = 43; /* Max Distortion inter */ - value[5] = 43; /* Max Distortion intra */ - } else { - value[0] = 20; /* PCM Threshold 1 */ - value[1] = 12; /* PCM Threshold 2 */ - value[2] = 255; /* Distortion Threshold d7-d0 */ - value[3] = 0; /* Distortion Threshold d11-d8 */ - value[4] = 43; /* Max Distortion d7-d0 */ - value[5] = 0; /* Max Distortion d8 */ - } - - if (!USBVISION_IS_OPERATIONAL(usbvision)) - return 0; - - rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), - USBVISION_OP_CODE, - USB_DIR_OUT | USB_TYPE_VENDOR | - USB_RECIP_ENDPOINT, 0, - (__u16) USBVISION_PCM_THR1, value, 6, HZ); - - if (rc < 0) { - printk(KERN_ERR "%sERROR=%d. USBVISION stopped - reconnect or reload driver.\n", - proc, rc); - } - return rc; -} - - -/* - * usbvision_set_input() - * - * Set the input (saa711x, ...) size x y and other misc input params - * I've no idea if this parameters are right - * - */ -int usbvision_set_input(struct usb_usbvision *usbvision) -{ - static const char proc[] = "usbvision_set_input: "; - int rc; - unsigned char *value = usbvision->ctrl_urb_buffer; - unsigned char dvi_yuv_value; - - if (!USBVISION_IS_OPERATIONAL(usbvision)) - return 0; - - /* Set input format expected from decoder*/ - if (usbvision_device_data[usbvision->dev_model].vin_reg1_override) { - value[0] = usbvision_device_data[usbvision->dev_model].vin_reg1; - } else if (usbvision_device_data[usbvision->dev_model].codec == CODEC_SAA7113) { - /* SAA7113 uses 8 bit output */ - value[0] = USBVISION_8_422_SYNC; - } else { - /* I'm sure only about d2-d0 [010] 16 bit 4:2:2 using sync pulses - * as that is how saa7111 is configured */ - value[0] = USBVISION_16_422_SYNC; - /* | USBVISION_VSNC_POL | USBVISION_VCLK_POL);*/ - } - - rc = usbvision_write_reg(usbvision, USBVISION_VIN_REG1, value[0]); - if (rc < 0) { - printk(KERN_ERR "%sERROR=%d. USBVISION stopped - reconnect or reload driver.\n", - proc, rc); - return rc; - } - - - if (usbvision->tvnorm_id & V4L2_STD_PAL) { - value[0] = 0xC0; - value[1] = 0x02; /* 0x02C0 -> 704 Input video line length */ - value[2] = 0x20; - value[3] = 0x01; /* 0x0120 -> 288 Input video n. of lines */ - value[4] = 0x60; - value[5] = 0x00; /* 0x0060 -> 96 Input video h offset */ - value[6] = 0x16; - value[7] = 0x00; /* 0x0016 -> 22 Input video v offset */ - } else if (usbvision->tvnorm_id & V4L2_STD_SECAM) { - value[0] = 0xC0; - value[1] = 0x02; /* 0x02C0 -> 704 Input video line length */ - value[2] = 0x20; - value[3] = 0x01; /* 0x0120 -> 288 Input video n. of lines */ - value[4] = 0x01; - value[5] = 0x00; /* 0x0001 -> 01 Input video h offset */ - value[6] = 0x01; - value[7] = 0x00; /* 0x0001 -> 01 Input video v offset */ - } else { /* V4L2_STD_NTSC */ - value[0] = 0xD0; - value[1] = 0x02; /* 0x02D0 -> 720 Input video line length */ - value[2] = 0xF0; - value[3] = 0x00; /* 0x00F0 -> 240 Input video number of lines */ - value[4] = 0x50; - value[5] = 0x00; /* 0x0050 -> 80 Input video h offset */ - value[6] = 0x10; - value[7] = 0x00; /* 0x0010 -> 16 Input video v offset */ - } - - /* webcam is only 480 pixels wide, both PAL and NTSC version */ - if (usbvision_device_data[usbvision->dev_model].codec == CODEC_WEBCAM) { - value[0] = 0xe0; - value[1] = 0x01; /* 0x01E0 -> 480 Input video line length */ - } - - if (usbvision_device_data[usbvision->dev_model].x_offset >= 0) { - value[4] = usbvision_device_data[usbvision->dev_model].x_offset & 0xff; - value[5] = (usbvision_device_data[usbvision->dev_model].x_offset & 0x0300) >> 8; - } - - if (adjust_x_offset != -1) { - value[4] = adjust_x_offset & 0xff; - value[5] = (adjust_x_offset & 0x0300) >> 8; - } - - if (usbvision_device_data[usbvision->dev_model].y_offset >= 0) { - value[6] = usbvision_device_data[usbvision->dev_model].y_offset & 0xff; - value[7] = (usbvision_device_data[usbvision->dev_model].y_offset & 0x0300) >> 8; - } - - if (adjust_y_offset != -1) { - value[6] = adjust_y_offset & 0xff; - value[7] = (adjust_y_offset & 0x0300) >> 8; - } - - rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), - USBVISION_OP_CODE, /* USBVISION specific code */ - USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT, 0, - (__u16) USBVISION_LXSIZE_I, value, 8, HZ); - if (rc < 0) { - printk(KERN_ERR "%sERROR=%d. USBVISION stopped - reconnect or reload driver.\n", - proc, rc); - return rc; - } - - - dvi_yuv_value = 0x00; /* U comes after V, Ya comes after U/V, Yb comes after Yb */ - - if (usbvision_device_data[usbvision->dev_model].dvi_yuv_override) { - dvi_yuv_value = usbvision_device_data[usbvision->dev_model].dvi_yuv; - } else if (usbvision_device_data[usbvision->dev_model].codec == CODEC_SAA7113) { - /* This changes as the fine sync control changes. Further investigation necessary */ - dvi_yuv_value = 0x06; - } - - return usbvision_write_reg(usbvision, USBVISION_DVI_YUV, dvi_yuv_value); -} - - -/* - * usbvision_set_dram_settings() - * - * Set the buffer address needed by the usbvision dram to operate - * This values has been taken with usbsnoop. - * - */ - -static int usbvision_set_dram_settings(struct usb_usbvision *usbvision) -{ - unsigned char *value = usbvision->ctrl_urb_buffer; - int rc; - - if (usbvision->isoc_mode == ISOC_MODE_COMPRESS) { - value[0] = 0x42; - value[1] = 0x71; - value[2] = 0xff; - value[3] = 0x00; - value[4] = 0x98; - value[5] = 0xe0; - value[6] = 0x71; - value[7] = 0xff; - /* UR: 0x0E200-0x3FFFF = 204288 Words (1 Word = 2 Byte) */ - /* FDL: 0x00000-0x0E099 = 57498 Words */ - /* VDW: 0x0E3FF-0x3FFFF */ - } else { - value[0] = 0x42; - value[1] = 0x00; - value[2] = 0xff; - value[3] = 0x00; - value[4] = 0x00; - value[5] = 0x00; - value[6] = 0x00; - value[7] = 0xff; - } - /* These are the values of the address of the video buffer, - * they have to be loaded into the USBVISION_DRM_PRM1-8 - * - * Start address of video output buffer for read: drm_prm1-2 -> 0x00000 - * End address of video output buffer for read: drm_prm1-3 -> 0x1ffff - * Start address of video frame delay buffer: drm_prm1-4 -> 0x20000 - * Only used in compressed mode - * End address of video frame delay buffer: drm_prm1-5-6 -> 0x3ffff - * Only used in compressed mode - * Start address of video output buffer for write: drm_prm1-7 -> 0x00000 - * End address of video output buffer for write: drm_prm1-8 -> 0x1ffff - */ - - if (!USBVISION_IS_OPERATIONAL(usbvision)) - return 0; - - rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), - USBVISION_OP_CODE, /* USBVISION specific code */ - USB_DIR_OUT | USB_TYPE_VENDOR | - USB_RECIP_ENDPOINT, 0, - (__u16) USBVISION_DRM_PRM1, value, 8, HZ); - - if (rc < 0) { - dev_err(&usbvision->dev->dev, "%s: ERROR=%d\n", __func__, rc); - return rc; - } - - /* Restart the video buffer logic */ - rc = usbvision_write_reg(usbvision, USBVISION_DRM_CONT, USBVISION_RES_UR | - USBVISION_RES_FDL | USBVISION_RES_VDW); - if (rc < 0) - return rc; - rc = usbvision_write_reg(usbvision, USBVISION_DRM_CONT, 0x00); - - return rc; -} - -/* - * () - * - * Power on the device, enables suspend-resume logic - * & reset the isoc End-Point - * - */ - -int usbvision_power_on(struct usb_usbvision *usbvision) -{ - int err_code = 0; - - PDEBUG(DBG_FUNC, ""); - - usbvision_write_reg(usbvision, USBVISION_PWR_REG, USBVISION_SSPND_EN); - usbvision_write_reg(usbvision, USBVISION_PWR_REG, - USBVISION_SSPND_EN | USBVISION_RES2); - - if (usbvision_device_data[usbvision->dev_model].codec == CODEC_WEBCAM) { - usbvision_write_reg(usbvision, USBVISION_VIN_REG1, - USBVISION_16_422_SYNC | USBVISION_HVALID_PO); - usbvision_write_reg(usbvision, USBVISION_VIN_REG2, - USBVISION_NOHVALID | USBVISION_KEEP_BLANK); - } - usbvision_write_reg(usbvision, USBVISION_PWR_REG, - USBVISION_SSPND_EN | USBVISION_PWR_VID); - mdelay(10); - err_code = usbvision_write_reg(usbvision, USBVISION_PWR_REG, - USBVISION_SSPND_EN | USBVISION_PWR_VID | USBVISION_RES2); - if (err_code == 1) - usbvision->power = 1; - PDEBUG(DBG_FUNC, "%s: err_code %d", (err_code < 0) ? "ERROR" : "power is on", err_code); - return err_code; -} - - -/* - * usbvision_begin_streaming() - * Sure you have to put bit 7 to 0, if not incoming frames are dropped, but no - * idea about the rest - */ -int usbvision_begin_streaming(struct usb_usbvision *usbvision) -{ - if (usbvision->isoc_mode == ISOC_MODE_COMPRESS) - usbvision_init_compression(usbvision); - return usbvision_write_reg(usbvision, USBVISION_VIN_REG2, - USBVISION_NOHVALID | usbvision->vin_reg2_preset); -} - -/* - * usbvision_restart_isoc() - * Not sure yet if touching here PWR_REG make loose the config - */ - -int usbvision_restart_isoc(struct usb_usbvision *usbvision) -{ - int ret; - - ret = usbvision_write_reg(usbvision, USBVISION_PWR_REG, - USBVISION_SSPND_EN | USBVISION_PWR_VID); - if (ret < 0) - return ret; - ret = usbvision_write_reg(usbvision, USBVISION_PWR_REG, - USBVISION_SSPND_EN | USBVISION_PWR_VID | - USBVISION_RES2); - if (ret < 0) - return ret; - ret = usbvision_write_reg(usbvision, USBVISION_VIN_REG2, - USBVISION_KEEP_BLANK | USBVISION_NOHVALID | - usbvision->vin_reg2_preset); - if (ret < 0) - return ret; - - /* TODO: schedule timeout */ - while ((usbvision_read_reg(usbvision, USBVISION_STATUS_REG) & 0x01) != 1) - ; - - return 0; -} - -int usbvision_audio_off(struct usb_usbvision *usbvision) -{ - if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, USBVISION_AUDIO_MUTE) < 0) { - printk(KERN_ERR "usbvision_audio_off: can't write reg\n"); - return -1; - } - usbvision->audio_mute = 0; - usbvision->audio_channel = USBVISION_AUDIO_MUTE; - return 0; -} - -int usbvision_set_audio(struct usb_usbvision *usbvision, int audio_channel) -{ - if (!usbvision->audio_mute) { - if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, audio_channel) < 0) { - printk(KERN_ERR "usbvision_set_audio: can't write iopin register for audio switching\n"); - return -1; - } - } - usbvision->audio_channel = audio_channel; - return 0; -} - -int usbvision_setup(struct usb_usbvision *usbvision, int format) -{ - if (usbvision_device_data[usbvision->dev_model].codec == CODEC_WEBCAM) - usbvision_init_webcam(usbvision); - usbvision_set_video_format(usbvision, format); - usbvision_set_dram_settings(usbvision); - usbvision_set_compress_params(usbvision); - usbvision_set_input(usbvision); - usbvision_set_output(usbvision, MAX_USB_WIDTH, MAX_USB_HEIGHT); - usbvision_restart_isoc(usbvision); - - /* cosas del PCM */ - return USBVISION_IS_OPERATIONAL(usbvision); -} - -int usbvision_set_alternate(struct usb_usbvision *dev) -{ - int err_code, prev_alt = dev->iface_alt; - int i; - - dev->iface_alt = 0; - for (i = 0; i < dev->num_alt; i++) - if (dev->alt_max_pkt_size[i] > dev->alt_max_pkt_size[dev->iface_alt]) - dev->iface_alt = i; - - if (dev->iface_alt != prev_alt) { - dev->isoc_packet_size = dev->alt_max_pkt_size[dev->iface_alt]; - PDEBUG(DBG_FUNC, "setting alternate %d with max_packet_size=%u", - dev->iface_alt, dev->isoc_packet_size); - err_code = usb_set_interface(dev->dev, dev->iface, dev->iface_alt); - if (err_code < 0) { - dev_err(&dev->dev->dev, - "cannot change alternate number to %d (error=%i)\n", - dev->iface_alt, err_code); - return err_code; - } - } - - PDEBUG(DBG_ISOC, "ISO Packet Length:%d", dev->isoc_packet_size); - - return 0; -} - -/* - * usbvision_init_isoc() - * - */ -int usbvision_init_isoc(struct usb_usbvision *usbvision) -{ - struct usb_device *dev = usbvision->dev; - int buf_idx, err_code, reg_value; - int sb_size; - - if (!USBVISION_IS_OPERATIONAL(usbvision)) - return -EFAULT; - - usbvision->cur_frame = NULL; - scratch_reset(usbvision); - - /* Alternate interface 1 is is the biggest frame size */ - err_code = usbvision_set_alternate(usbvision); - if (err_code < 0) { - usbvision->last_error = err_code; - return -EBUSY; - } - sb_size = USBVISION_URB_FRAMES * usbvision->isoc_packet_size; - - reg_value = (16 - usbvision_read_reg(usbvision, - USBVISION_ALTER_REG)) & 0x0F; - - usbvision->usb_bandwidth = reg_value >> 1; - PDEBUG(DBG_ISOC, "USB Bandwidth Usage: %dMbit/Sec", - usbvision->usb_bandwidth); - - - - /* We double buffer the Iso lists */ - - for (buf_idx = 0; buf_idx < USBVISION_NUMSBUF; buf_idx++) { - int j, k; - struct urb *urb; - - urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL); - if (urb == NULL) - return -ENOMEM; - usbvision->sbuf[buf_idx].urb = urb; - usbvision->sbuf[buf_idx].data = - usb_alloc_coherent(usbvision->dev, - sb_size, - GFP_KERNEL, - &urb->transfer_dma); - if (!usbvision->sbuf[buf_idx].data) - return -ENOMEM; - - urb->dev = dev; - urb->context = usbvision; - urb->pipe = usb_rcvisocpipe(dev, usbvision->video_endp); - urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP; - urb->interval = 1; - urb->transfer_buffer = usbvision->sbuf[buf_idx].data; - urb->complete = usbvision_isoc_irq; - urb->number_of_packets = USBVISION_URB_FRAMES; - urb->transfer_buffer_length = - usbvision->isoc_packet_size * USBVISION_URB_FRAMES; - for (j = k = 0; j < USBVISION_URB_FRAMES; j++, - k += usbvision->isoc_packet_size) { - urb->iso_frame_desc[j].offset = k; - urb->iso_frame_desc[j].length = - usbvision->isoc_packet_size; - } - } - - /* Submit all URBs */ - for (buf_idx = 0; buf_idx < USBVISION_NUMSBUF; buf_idx++) { - err_code = usb_submit_urb(usbvision->sbuf[buf_idx].urb, - GFP_KERNEL); - if (err_code) { - dev_err(&usbvision->dev->dev, - "%s: usb_submit_urb(%d) failed: error %d\n", - __func__, buf_idx, err_code); - } - } - - usbvision->streaming = stream_idle; - PDEBUG(DBG_ISOC, "%s: streaming=1 usbvision->video_endp=$%02x", - __func__, - usbvision->video_endp); - return 0; -} - -/* - * usbvision_stop_isoc() - * - * This procedure stops streaming and deallocates URBs. Then it - * activates zero-bandwidth alt. setting of the video interface. - * - */ -void usbvision_stop_isoc(struct usb_usbvision *usbvision) -{ - int buf_idx, err_code, reg_value; - int sb_size = USBVISION_URB_FRAMES * usbvision->isoc_packet_size; - - if ((usbvision->streaming == stream_off) || (usbvision->dev == NULL)) - return; - - /* Unschedule all of the iso td's */ - for (buf_idx = 0; buf_idx < USBVISION_NUMSBUF; buf_idx++) { - usb_kill_urb(usbvision->sbuf[buf_idx].urb); - if (usbvision->sbuf[buf_idx].data) { - usb_free_coherent(usbvision->dev, - sb_size, - usbvision->sbuf[buf_idx].data, - usbvision->sbuf[buf_idx].urb->transfer_dma); - } - usb_free_urb(usbvision->sbuf[buf_idx].urb); - usbvision->sbuf[buf_idx].urb = NULL; - } - - PDEBUG(DBG_ISOC, "%s: streaming=stream_off\n", __func__); - usbvision->streaming = stream_off; - - if (!usbvision->remove_pending) { - /* Set packet size to 0 */ - usbvision->iface_alt = 0; - err_code = usb_set_interface(usbvision->dev, usbvision->iface, - usbvision->iface_alt); - if (err_code < 0) { - dev_err(&usbvision->dev->dev, - "%s: usb_set_interface() failed: error %d\n", - __func__, err_code); - usbvision->last_error = err_code; - } - reg_value = (16-usbvision_read_reg(usbvision, USBVISION_ALTER_REG)) & 0x0F; - usbvision->isoc_packet_size = - (reg_value == 0) ? 0 : (reg_value * 64) - 1; - PDEBUG(DBG_ISOC, "ISO Packet Length:%d", - usbvision->isoc_packet_size); - - usbvision->usb_bandwidth = reg_value >> 1; - PDEBUG(DBG_ISOC, "USB Bandwidth Usage: %dMbit/Sec", - usbvision->usb_bandwidth); - } -} - -int usbvision_muxsel(struct usb_usbvision *usbvision, int channel) -{ - /* inputs #0 and #3 are constant for every SAA711x. */ - /* inputs #1 and #2 are variable for SAA7111 and SAA7113 */ - int mode[4] = { SAA7115_COMPOSITE0, 0, 0, SAA7115_COMPOSITE3 }; - int audio[] = { 1, 0, 0, 0 }; - /* channel 0 is TV with audiochannel 1 (tuner mono) */ - /* channel 1 is Composite with audio channel 0 (line in) */ - /* channel 2 is S-Video with audio channel 0 (line in) */ - /* channel 3 is additional video inputs to the device with audio channel 0 (line in) */ - - RESTRICT_TO_RANGE(channel, 0, usbvision->video_inputs); - usbvision->ctl_input = channel; - - /* set the new channel */ - /* Regular USB TV Tuners -> channel: 0 = Television, 1 = Composite, 2 = S-Video */ - /* Four video input devices -> channel: 0 = Chan White, 1 = Chan Green, 2 = Chan Yellow, 3 = Chan Red */ - - switch (usbvision_device_data[usbvision->dev_model].codec) { - case CODEC_SAA7113: - mode[1] = SAA7115_COMPOSITE2; - if (switch_svideo_input) { - /* To handle problems with S-Video Input for - * some devices. Use switch_svideo_input - * parameter when loading the module.*/ - mode[2] = SAA7115_COMPOSITE1; - } else { - mode[2] = SAA7115_SVIDEO1; - } - break; - case CODEC_SAA7111: - default: - /* modes for saa7111 */ - mode[1] = SAA7115_COMPOSITE1; - mode[2] = SAA7115_SVIDEO1; - break; - } - call_all(usbvision, video, s_routing, mode[channel], 0, 0); - usbvision_set_audio(usbvision, audio[channel]); - return 0; -} |