Staging: Yet another (third) dt3155 driver PCI/video4linux compliant
Kernel module (device driver) for dt3155 frame grabber
video4linux2 compliant (finally). Works with "xawtv -f".
======================================================
This driver is written (almost) from scratch, using the
allocator developed for dt3155pci see bellow). The driver
uses videobuf-dma-contig interface modified to use the above
mentioned allocator instead of dma_alloc_coheren().
The first thing to do was to design a new allocator based
on allocating a configurable number of 4MB chunks of memory,
that latter are broken into frame buffers of 768x576 bytes
kept in different FIFOs (queues). As far as the driver autoloads
as a kernel module during kernel boot, the allocation of 4MB
chunks succeeds.
The driver keeps three FIFOs: one for 4MB chunks, one for free
buffers (available for allocations) and one for buffers already
allocated. Allocation/deallocation is done automatically though
the video4linux videobuf subsystem (some pointers to functions
are replaced by driver supplied functions).
Sure, there are problems:
1. The device tested to work with "xawtv -f" either via read()
method (DT3155_STREAMING not selected), or via mmap() method
(DT3155_STREAMING is selected) only. This coresponds to either
cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE;
or
cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
but not when
cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |
V4L2_CAP_STREAMING |
V4L2_CAP_READWRITE;
This is because xawtv calls poll() before starting streaming,
but videobuf_poll_stream() automatically starts reading if streaming
is not started.
This selection is made during kernel configuration (for now).
2. Works for CCIR, but should work for RS-170 (not tested)
This is made also during kernel configuration.
3. Could work for multiple dt3155 frame grabbers in a PC,
(private data is allocated during PCI probe() method), but
is not tested due to lack of a second board.
4. Not tested on a BIG ENDIAN architecture.
5. Many others you could find .... :-)
All critics, comments, suggestions are wellcome.
Signed-off-by: Marin Mitov <mitov@issp.bas.bg>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Marin Mitov
Greg Kroah-Hartman
Родитель
6608224c9e
Коммит
d42bffb899
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@ -137,6 +137,8 @@ source "drivers/staging/sm7xx/Kconfig"
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source "drivers/staging/dt3155/Kconfig"
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source "drivers/staging/dt3155v4l/Kconfig"
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source "drivers/staging/crystalhd/Kconfig"
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source "drivers/staging/cxt1e1/Kconfig"
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@ -0,0 +1,28 @@
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config VIDEO_DT3155
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tristate "DT3155 frame grabber, Video4Linux interface"
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depends on PCI && VIDEO_DEV && VIDEO_V4L2
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select VIDEOBUF_DMA_CONTIG
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default n
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---help---
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Enables dt3155 device driver for the DataTranslation DT3155 frame grabber.
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Say Y here if you have this hardware.
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In doubt, say N.
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To compile this driver as a module, choose M here: the
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module will be called dt3155_v4l.
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config DT3155_CCIR
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bool "Selects CCIR/50Hz vertical refresh"
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depends on VIDEO_DT3155
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default y
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---help---
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Select it for CCIR/50Hz (European region),
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or leave it unselected for RS-170/60Hz (North America).
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config DT3155_STREAMING
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bool "Selects mmap streaming instead of read method"
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depends on VIDEO_DT3155
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default y
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---help---
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Select it if you wish to try mmap streaming, or
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or leave it unselected for using read method.
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@ -0,0 +1,4 @@
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obj-$(CONFIG_VIDEO_DT3155) += dt3155_v4l.o
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dt3155_v4l-objs := \
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dt3155-bufs.o \
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dt3155v4l.o
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@ -0,0 +1,256 @@
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/***************************************************************************
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* Copyright (C) 2006-2010 by Marin Mitov *
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* mitov@issp.bas.bg *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#include "dt3155-bufs.h"
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/**
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* dt3155_init_chunks_buf - creates a chunk buffer and allocates memory for it
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*
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* returns: a pointer to the struct dt3155_buf or NULL if failed
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*
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* Creates a struct dt3155_buf, then allocates a chunk of memory of
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* size DT3155_CHUNK_SIZE and sets all the pages in it as Reserved.
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* This is done to be able to use remap_pfn_range() on these buffers
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* (which do not work on normal memory if Reserved bit is not set)
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*/
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struct dt3155_buf *
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dt3155_init_chunks_buf(void)
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{ /* could sleep */
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struct dt3155_buf *buf;
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int i;
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buf = kzalloc(sizeof(*buf), GFP_KERNEL);
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if (!buf)
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return NULL;
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buf->cpu = (void *)__get_free_pages(DT3155_CHUNK_FLAGS,
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get_order(DT3155_CHUNK_SIZE));
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if (!buf->cpu) {
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kfree(buf);
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return NULL;
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}
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for (i = 0; i < DT3155_CHUNK_SIZE; i += PAGE_SIZE)
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SetPageReserved(virt_to_page(buf->cpu + i));
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return buf; /* success */
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}
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/**
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* dt3155_free_chunks_buf - destroys the specified buffer
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*
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* @buf: the buffer to be freed
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*
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* Clears Reserved bit of all pages in the chunk, frees the chunk memory
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* and destroys struct dt3155_buf.
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*/
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void
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dt3155_free_chunks_buf(struct dt3155_buf *buf)
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{
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int i;
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for (i = 0; i < DT3155_CHUNK_SIZE; i += PAGE_SIZE)
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ClearPageReserved(virt_to_page(buf->cpu + i));
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free_pages((unsigned long)buf->cpu, get_order(DT3155_CHUNK_SIZE));
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kfree(buf);
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}
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/**
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* dt3155_init_fifo - creates and initializes a fifo
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*
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* returns: a pointer to the crated and initialized struct dt3155_fifo
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* or NULL if failed
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*/
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struct dt3155_fifo *
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dt3155_init_fifo(void)
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{ /* could sleep */
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struct dt3155_fifo *fifo = kzalloc(sizeof(*fifo), GFP_KERNEL);
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if (fifo)
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spin_lock_init(&fifo->lock);
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return fifo;
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}
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/* dt3155_free_fifo(x) defined as macro in dt3155.h */
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/**
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* dt3155_get_buf - gets a buffer from the fifo
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*
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* @fifo: the fifo to get a buffer from
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*
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* returns: a pointer to the buffer or NULL if failed
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*
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* dt3155_get_buf gets the fifo's spin_lock and returns the
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* buffer pointed by the head. Could be used in any context.
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*/
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struct dt3155_buf *
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dt3155_get_buf(struct dt3155_fifo *fifo)
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{
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unsigned long flags;
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struct dt3155_buf *tmp_buf;
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spin_lock_irqsave(&fifo->lock, flags);
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tmp_buf = fifo->head;
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if (fifo->head)
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fifo->head = fifo->head->next;
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if (!fifo->head)
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fifo->tail = NULL;
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spin_unlock_irqrestore(&fifo->lock, flags);
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return tmp_buf;
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}
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/**
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* dt3155_put_buf - puts a buffer into a fifo
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*
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* @buf: the buffer to put
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* @fifo: the fifo to put the buffer in
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*
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* dt3155_put_buf gets the fifo's spin_lock and puts the buf
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* at the tail of the fifo. Could be used in any context.
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*/
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void
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dt3155_put_buf(struct dt3155_buf *buf, struct dt3155_fifo *fifo)
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{
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unsigned long flags;
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spin_lock_irqsave(&fifo->lock, flags);
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buf->next = NULL;
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if (fifo->tail)
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fifo->tail->next = buf;
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fifo->tail = buf;
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if (!fifo->head)
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fifo->head = buf;
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spin_unlock_irqrestore(&fifo->lock, flags);
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}
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/**
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* dt3155_init_chunks_fifo - creates and fills a chunks_fifo
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*
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* returns: a pointer to the fifo or NULL if failed
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*
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* dt3155_init_chunks_fifo creates and fills the fifo with
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* a number of chunks <= DT3155_CHUNK_NUM. The returned fifo
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* contains at least one chunk.
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*/
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struct dt3155_fifo *
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dt3155_init_chunks_fifo(void)
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{ /* could sleep */
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int i;
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struct dt3155_fifo *chunks;
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struct dt3155_buf *tmp_buf;
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chunks = dt3155_init_fifo();
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if (!chunks)
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return NULL;
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tmp_buf = dt3155_init_chunks_buf();
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if (!tmp_buf) {
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dt3155_free_fifo(chunks);
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return NULL;
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}
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dt3155_put_buf(tmp_buf, chunks);
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for (i = 1; i < DT3155_CHUNK_NUM; i++) {
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tmp_buf = dt3155_init_chunks_buf();
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if (!tmp_buf)
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break;
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dt3155_put_buf(tmp_buf, chunks);
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}
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return chunks;
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}
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/**
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* dt3155_free_chunks_fifo - empties and destroys the chunks_fifo
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*
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* @chunks: the chunks_fifo to be freed
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*
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* dt3155_free_chunks_fifo deallocates all chunks in the fifo and
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* destroys it.
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*/
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void
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dt3155_free_chunks_fifo(struct dt3155_fifo *chunks)
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{
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int buf_count = 0;
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struct dt3155_buf *buf;
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while ((buf = dt3155_get_buf(chunks))) {
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dt3155_free_chunks_buf(buf);
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buf_count++;
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}
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dt3155_free_fifo(chunks);
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printk(KERN_INFO "dt3155: %i chunks freed\n", buf_count);
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}
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/**
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* dt3155_init_ibufs_fifo - creates and fills an image buffer fifo
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*
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* @chunks: chunks_fifo to take memory from
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* @buf_size: the size of image buffers
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*
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* returns: a pointer to the fifo filled with image buffers
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*
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* dt3155_init_ibufs_fifo takes chunks from chunks_fifo, chops them
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* into pieces of size buf_size and fills image fifo with them.
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*/
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struct dt3155_fifo *
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dt3155_init_ibufs_fifo(struct dt3155_fifo *chunks, int buf_size)
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{ /* could sleep */
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int i, buf_count = 0;
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struct dt3155_buf *tmp_ibuf, *chunks_buf, *last_chunk;
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struct dt3155_fifo *tmp_fifo;
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tmp_fifo = dt3155_init_fifo();
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if (!tmp_fifo)
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return NULL;
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last_chunk = chunks->tail;
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do {
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chunks_buf = dt3155_get_buf(chunks);
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dt3155_put_buf(chunks_buf, chunks);
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for (i = 0; i < DT3155_CHUNK_SIZE / buf_size; i++) {
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tmp_ibuf = kzalloc(sizeof(*tmp_ibuf), GFP_KERNEL);
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if (tmp_ibuf) {
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tmp_ibuf->cpu =
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chunks_buf->cpu + DT3155_BUF_SIZE * i;
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dt3155_put_buf(tmp_ibuf, tmp_fifo);
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buf_count++;
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} else {
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if (buf_count) {
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goto print_num_bufs;
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} else {
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dt3155_free_fifo(tmp_fifo);
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return NULL;
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}
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}
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}
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} while (chunks_buf != last_chunk);
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print_num_bufs:
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printk(KERN_INFO "dt3155: %i image buffers available\n", buf_count);
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return tmp_fifo;
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}
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/**
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* dt3155_free_ibufs_fifo - empties and destroys an image fifo
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*
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* @fifo: the fifo to free
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*/
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void
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dt3155_free_ibufs_fifo(struct dt3155_fifo *fifo)
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{
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struct dt3155_buf *tmp_ibuf;
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while ((tmp_ibuf = dt3155_get_buf(fifo)))
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kfree(tmp_ibuf);
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kfree(fifo);
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}
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@ -0,0 +1,88 @@
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/***************************************************************************
|
||||
* Copyright (C) 2006-2010 by Marin Mitov *
|
||||
* mitov@issp.bas.bg *
|
||||
* *
|
||||
* This program is free software; you can redistribute it and/or modify *
|
||||
* it under the terms of the GNU General Public License as published by *
|
||||
* the Free Software Foundation; either version 2 of the License, or *
|
||||
* (at your option) any later version. *
|
||||
* *
|
||||
* This program is distributed in the hope that it will be useful, *
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
|
||||
* GNU General Public License for more details. *
|
||||
* *
|
||||
* You should have received a copy of the GNU General Public License *
|
||||
* along with this program; if not, write to the *
|
||||
* Free Software Foundation, Inc., *
|
||||
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
|
||||
***************************************************************************/
|
||||
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||||
#ifndef _DT3155_BUFS_H_
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||||
#define _DT3155_BUFS_H_
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#include <linux/pci.h>
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||||
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/* 4 chunks of 4MB, 9 buffers each = 36 buffers (> VIDEO_MAX_FRAME) */
|
||||
#define DT3155_CHUNK_NUM 4
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/* DT3155_CHUNK_SIZE should be 4M (2^22) or less, but more than image size */
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#define DT3155_CHUNK_SIZE (1U << 22)
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#define DT3155_CHUNK_FLAGS (GFP_KERNEL | GFP_DMA32 | __GFP_COLD | __GFP_NOWARN)
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/* DT3155_BUF_SIZE = 108 * PAGE_SIZE, so each buf is PAGE_SIZE alligned */
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#define DT3155_BUF_SIZE (768 * 576)
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/**
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||||
* struct dt3155_buf - image buffer structure
|
||||
*
|
||||
* @cpu: virtual kernel address of the buffer
|
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* @dma: dma (bus) address of the buffer
|
||||
* @next: pointer to the next buffer in the fifo
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||||
* @tv: time value when the image has been acquired
|
||||
*/
|
||||
struct dt3155_buf {
|
||||
void *cpu;
|
||||
dma_addr_t dma;
|
||||
struct dt3155_buf *next;
|
||||
struct timeval tv;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct dt3155_fifo - fifo structure
|
||||
*
|
||||
* @head: pointer to the head of the fifo
|
||||
* @tail: pionter to the tail of the fifo
|
||||
* @lock: spin_lock to protect the fifo
|
||||
*/
|
||||
struct dt3155_fifo {
|
||||
struct dt3155_buf *head;
|
||||
struct dt3155_buf *tail;
|
||||
spinlock_t lock;
|
||||
};
|
||||
|
||||
struct dt3155_buf * __must_check
|
||||
dt3155_init_chunks_buf(void);
|
||||
void
|
||||
dt3155_free_chunks_buf(struct dt3155_buf *buf);
|
||||
|
||||
struct dt3155_fifo * __must_check
|
||||
dt3155_init_fifo(void);
|
||||
#define dt3155_free_fifo(x) kfree(x)
|
||||
|
||||
struct dt3155_buf * __must_check
|
||||
dt3155_get_buf(struct dt3155_fifo *fifo);
|
||||
void
|
||||
dt3155_put_buf(struct dt3155_buf *buf, struct dt3155_fifo *fifo);
|
||||
|
||||
struct dt3155_fifo * __must_check
|
||||
dt3155_init_chunks_fifo(void);
|
||||
void
|
||||
dt3155_free_chunks_fifo(struct dt3155_fifo *chunks);
|
||||
|
||||
struct dt3155_fifo * __must_check
|
||||
dt3155_init_ibufs_fifo(struct dt3155_fifo *chunks, int buf_size);
|
||||
void
|
||||
dt3155_free_ibufs_fifo(struct dt3155_fifo *fifo);
|
||||
|
||||
#endif /* _DT3155_BUFS_H_ */
|
||||
Разница между файлами не показана из-за своего большого размера
Загрузить разницу
|
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@ -0,0 +1,220 @@
|
|||
/***************************************************************************
|
||||
* Copyright (C) 2006-2010 by Marin Mitov *
|
||||
* mitov@issp.bas.bg *
|
||||
* *
|
||||
* This program is free software; you can redistribute it and/or modify *
|
||||
* it under the terms of the GNU General Public License as published by *
|
||||
* the Free Software Foundation; either version 2 of the License, or *
|
||||
* (at your option) any later version. *
|
||||
* *
|
||||
* This program is distributed in the hope that it will be useful, *
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
|
||||
* GNU General Public License for more details. *
|
||||
* *
|
||||
* You should have received a copy of the GNU General Public License *
|
||||
* along with this program; if not, write to the *
|
||||
* Free Software Foundation, Inc., *
|
||||
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
|
||||
***************************************************************************/
|
||||
|
||||
/* DT3155 header file */
|
||||
#ifndef _DT3155_H_
|
||||
#define _DT3155_H_
|
||||
|
||||
#ifdef __KERNEL__
|
||||
|
||||
#include <linux/pci.h>
|
||||
#include <linux/interrupt.h>
|
||||
|
||||
#define DT3155_NAME "dt3155"
|
||||
#define DT3155_VER_MAJ 1
|
||||
#define DT3155_VER_MIN 0
|
||||
#define DT3155_VER_EXT 2
|
||||
#define DT3155_VERSION __stringify(DT3155_VER_MAJ) "." \
|
||||
__stringify(DT3155_VER_MIN) "." \
|
||||
__stringify(DT3155_VER_EXT)
|
||||
|
||||
/* DT3155 Base Register offsets (memory mapped) */
|
||||
#define EVEN_DMA_START 0x00
|
||||
#define ODD_DMA_START 0x0C
|
||||
#define EVEN_DMA_STRIDE 0x18
|
||||
#define ODD_DMA_STRIDE 0x24
|
||||
#define EVEN_PIXEL_FMT 0x30
|
||||
#define ODD_PIXEL_FMT 0x34
|
||||
#define FIFO_TRIGER 0x38
|
||||
#define XFER_MODE 0x3C
|
||||
#define CSR1 0x40
|
||||
#define RETRY_WAIT_CNT 0x44
|
||||
#define INT_CSR 0x48
|
||||
#define EVEN_FLD_MASK 0x4C
|
||||
#define ODD_FLD_MASK 0x50
|
||||
#define MASK_LENGTH 0x54
|
||||
#define FIFO_FLAG_CNT 0x58
|
||||
#define IIC_CLK_DUR 0x5C
|
||||
#define IIC_CSR1 0x60
|
||||
#define IIC_CSR2 0x64
|
||||
|
||||
/* DT3155 Internal Registers indexes (i2c/IIC mapped) */
|
||||
#define CSR2 0x10
|
||||
#define EVEN_CSR 0x11
|
||||
#define ODD_CSR 0x12
|
||||
#define CONFIG 0x13
|
||||
#define DT_ID 0x1F
|
||||
#define X_CLIP_START 0x20
|
||||
#define Y_CLIP_START 0x22
|
||||
#define X_CLIP_END 0x24
|
||||
#define Y_CLIP_END 0x26
|
||||
#define AD_ADDR 0x30
|
||||
#define AD_LUT 0x31
|
||||
#define AD_CMD 0x32
|
||||
#define DIG_OUT 0x40
|
||||
#define PM_LUT_ADDR 0x50
|
||||
#define PM_LUT_DATA 0x51
|
||||
|
||||
/* AD command register values */
|
||||
#define AD_CMD_REG 0x00
|
||||
#define AD_POS_REF 0x01
|
||||
#define AD_NEG_REF 0x02
|
||||
|
||||
/* CSR1 bit masks */
|
||||
#define CRPT_DIS 0x00004000
|
||||
#define FLD_CRPT_ODD 0x00000200
|
||||
#define FLD_CRPT_EVEN 0x00000100
|
||||
#define FIFO_EN 0x00000080
|
||||
#define SRST 0x00000040
|
||||
#define FLD_DN_ODD 0x00000020
|
||||
#define FLD_DN_EVEN 0x00000010
|
||||
/* These should not be used.
|
||||
* Use CAP_CONT_ODD/EVEN instead
|
||||
#define CAP_SNGL_ODD 0x00000008
|
||||
#define CAP_SNGL_EVEN 0x00000004
|
||||
*/
|
||||
#define CAP_CONT_ODD 0x00000002
|
||||
#define CAP_CONT_EVEN 0x00000001
|
||||
|
||||
/* INT_CSR bit masks */
|
||||
#define FLD_START_EN 0x00000400
|
||||
#define FLD_END_ODD_EN 0x00000200
|
||||
#define FLD_END_EVEN_EN 0x00000100
|
||||
#define FLD_START 0x00000004
|
||||
#define FLD_END_ODD 0x00000002
|
||||
#define FLD_END_EVEN 0x00000001
|
||||
|
||||
/* IIC_CSR1 bit masks */
|
||||
#define DIRECT_ABORT 0x00000200
|
||||
|
||||
/* IIC_CSR2 bit masks */
|
||||
#define NEW_CYCLE 0x01000000
|
||||
#define DIR_RD 0x00010000
|
||||
#define IIC_READ 0x01010000
|
||||
#define IIC_WRITE 0x01000000
|
||||
|
||||
/* CSR2 bit masks */
|
||||
#define DISP_PASS 0x40
|
||||
#define BUSY_ODD 0x20
|
||||
#define BUSY_EVEN 0x10
|
||||
#define SYNC_PRESENT 0x08
|
||||
#define VT_50HZ 0x04
|
||||
#define SYNC_SNTL 0x02
|
||||
#define CHROM_FILT 0x01
|
||||
#define VT_60HZ 0x00
|
||||
|
||||
/* CSR_EVEN/ODD bit masks */
|
||||
#define CSR_ERROR 0x04
|
||||
#define CSR_SNGL 0x02
|
||||
#define CSR_DONE 0x01
|
||||
|
||||
/* CONFIG bit masks */
|
||||
#define PM_LUT_PGM 0x80
|
||||
#define PM_LUT_SEL 0x40
|
||||
#define CLIP_EN 0x20
|
||||
#define HSCALE_EN 0x10
|
||||
#define EXT_TRIG_UP 0x0C
|
||||
#define EXT_TRIG_DOWN 0x04
|
||||
#define ACQ_MODE_NEXT 0x02
|
||||
#define ACQ_MODE_ODD 0x01
|
||||
#define ACQ_MODE_EVEN 0x00
|
||||
|
||||
/* AD_CMD bit masks */
|
||||
#define VIDEO_CNL_1 0x00
|
||||
#define VIDEO_CNL_2 0x40
|
||||
#define VIDEO_CNL_3 0x80
|
||||
#define VIDEO_CNL_4 0xC0
|
||||
#define SYNC_CNL_1 0x00
|
||||
#define SYNC_CNL_2 0x10
|
||||
#define SYNC_CNL_3 0x20
|
||||
#define SYNC_CNL_4 0x30
|
||||
#define SYNC_LVL_1 0x00
|
||||
#define SYNC_LVL_2 0x04
|
||||
#define SYNC_LVL_3 0x08
|
||||
#define SYNC_LVL_4 0x0C
|
||||
|
||||
/* DT3155 identificator */
|
||||
#define DT3155_ID 0x20
|
||||
|
||||
#ifdef CONFIG_DT3155_CCIR
|
||||
#define DMA_STRIDE 768
|
||||
#else
|
||||
#define DMA_STRIDE 640
|
||||
#endif
|
||||
|
||||
/**
|
||||
* struct dt3155_stats - statistics structure
|
||||
*
|
||||
* @free_bufs_empty: no free image buffers
|
||||
* @corrupted_fields: corrupted fields
|
||||
* @dma_map_failed: dma mapping failed
|
||||
* @start_before_end: new started before old ended
|
||||
*/
|
||||
struct dt3155_stats {
|
||||
int free_bufs_empty;
|
||||
int corrupted_fields;
|
||||
int dma_map_failed;
|
||||
int start_before_end;
|
||||
};
|
||||
|
||||
/* per board private data structure */
|
||||
/**
|
||||
* struct dt3155_priv - private data structure
|
||||
*
|
||||
* @vdev: pointer to video_device structure
|
||||
* @acq_fp pointer to filp that starts acquisition
|
||||
* @pdev: pointer to pci_dev structure
|
||||
* @vidq pointer to videobuf_queue structure
|
||||
* @curr_buf: pointer to curren buffer
|
||||
* @thread pointer to worker thraed
|
||||
* @irq_handler: irq handler for the driver
|
||||
* @dmaq queue for dma buffers
|
||||
* @do_dma wait queue of the kernel thread
|
||||
* @mux: mutex to protect the instance
|
||||
* @lock spinlock for videobuf queues
|
||||
* @field_count fields counter
|
||||
* @stats: statistics structure
|
||||
* @users open count
|
||||
* @regs: local copy of mmio base register
|
||||
* @csr2: local copy of csr2 register
|
||||
* @config: local copy of config register
|
||||
*/
|
||||
struct dt3155_priv {
|
||||
struct video_device *vdev;
|
||||
struct file *acq_fp;
|
||||
struct pci_dev *pdev;
|
||||
struct videobuf_queue *vidq;
|
||||
struct videobuf_buffer *curr_buf;
|
||||
struct task_struct *thread;
|
||||
irq_handler_t irq_handler;
|
||||
struct list_head dmaq;
|
||||
wait_queue_head_t do_dma;
|
||||
struct mutex mux;
|
||||
spinlock_t lock;
|
||||
unsigned int field_count;
|
||||
struct dt3155_stats stats;
|
||||
void *regs;
|
||||
int users;
|
||||
u8 csr2, config;
|
||||
};
|
||||
|
||||
#endif /* __KERNEL__ */
|
||||
|
||||
#endif /* _DT3155_H_ */
|
||||
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