linux/drivers/media/pci/bt8xx/bttv-if.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*

    bttv-if.c  --  old gpio interface to other kernel modules
		   don't use in new code, will go away in 2.7
		   have a look at bttv-gpio.c instead.

    bttv - Bt848 frame grabber driver

    Copyright (C) 1996,97,98 Ralph  Metzler ([email protected])
			   & Marcus Metzler ([email protected])
    (c) 1999-2003 Gerd Knorr <[email protected]>


*/

#include <linux/module.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <asm/io.h>

#include "bttvp.h"

EXPORT_SYMBOL(…);
EXPORT_SYMBOL(…);
EXPORT_SYMBOL(…);
EXPORT_SYMBOL(…);

/* ----------------------------------------------------------------------- */
/* Exported functions - for other modules which want to access the         */
/*                      gpio ports (IR for example)                        */
/*                      see bttv.h for comments                            */

struct pci_dev* bttv_get_pcidev(unsigned int card)
{ … }


int bttv_gpio_enable(unsigned int card, unsigned long mask, unsigned long data)
{ … }

int bttv_read_gpio(unsigned int card, unsigned long *data)
{ … }

int bttv_write_gpio(unsigned int card, unsigned long mask, unsigned long data)
{ … }