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/*
* Video spigot capture driver.
*
* Copyright (c) 1995, Jim Lowe. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer. 2.
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Version 1.2, Aug 30, 1995.
*/
#ifndef _MACHINE_SPIGOT_H_
#define _MACHINE_SPIGOT_H_
#include <sys/ioccom.h>
struct spigot_info {
unsigned long maddr;
unsigned short irq;
};
/*
* Get memory address.
*/
#define SPIGOT_GET_INFO _IOR('s', 4, struct spigot_info)
/*
* Set up a user interrupt.
*/
#define SPIGOT_SETINT _IOW('s', 5, int)
/*
* Allow/disallow access to the I/O Page.
*/
#define SPIGOT_IOPL_ON _IO ('s', 6)
#define SPIGOT_IOPL_OFF _IO ('s', 7)
#ifndef KERNEL
/*
* Defines for spigot library.
*/
unsigned short * spigot_open(char *dev);
void spigot_close(void);
void spigot_set_capture_size(int width, int vtof);
unsigned char spigot_start_xfer(int num_frames);
void spigot_stop_xfer(void);
unsigned char spigot_status(void);
/*
* Define the status bits.
*/
#define SPIGOT_COLOR 0x01 /* Color present (No color) */
#define SPIGOT_60HZ 0x02 /* 60 hz input signal (50hz) */
#define SPIGOT_NO_HORIZONTAL_LOCK 0x04 /* Horizontal lock present */
#define SPIGOT_HPLL_LOCKED 0x08 /* HPLL locked (HPLL unlocked)*/
#define SPIGOT_VCR_MODE 0x10 /* VCR mode (TV mode) */
#define SPIGOT_VSYNC_PRESENT 0x20 /* Vsync present */
/*
* spigot_open() returns a data address pointing to the spigot data.
* Each read from this address returns the next word. The ``dev'' passed
* is usually "/dev/spigot". Data is described in the phillips desktop
* video data handbook under the 7191 chip. Formats may be either
* YUV 4:2:2 or YUV 4:1:1. A sample device driver for ``nv'' is included
* with this code.
*
* spigot_close() cleans up and closes the device.
*
* spigot_set_capture_size() will set the capture window size. Width should be
* one of: 80, 160, 240, 320, or 640 for NTSC or
* 96, 192, 288, 384 for PAL.
* vtof is the Vertical top of frame offset and must be between 0 and 15 lines.
*
* spigot_start_xfer() will start a transfer from the 7191 to the data fifo.
* spigot_stop_xfer() will clear the data fifo and abort any transfers.
*
* spigot_status() will return the above status bits.
*/
#endif /* !KERNEL */
#endif /* !_MACHINE_SPIGOT_H_ */
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