mirror of https://gitee.com/openkylin/linux.git
160 lines
3.8 KiB
C
160 lines
3.8 KiB
C
/*
|
|
|
|
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 (rjkm@thp.uni-koeln.de)
|
|
& Marcus Metzler (mocm@thp.uni-koeln.de)
|
|
(c) 1999-2003 Gerd Knorr <kraxel@bytesex.org>
|
|
|
|
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., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/delay.h>
|
|
#include <asm/io.h>
|
|
|
|
#include "bttvp.h"
|
|
|
|
EXPORT_SYMBOL(bttv_get_cardinfo);
|
|
EXPORT_SYMBOL(bttv_get_pcidev);
|
|
EXPORT_SYMBOL(bttv_get_id);
|
|
EXPORT_SYMBOL(bttv_gpio_enable);
|
|
EXPORT_SYMBOL(bttv_read_gpio);
|
|
EXPORT_SYMBOL(bttv_write_gpio);
|
|
EXPORT_SYMBOL(bttv_get_gpio_queue);
|
|
EXPORT_SYMBOL(bttv_i2c_call);
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
/* Exported functions - for other modules which want to access the */
|
|
/* gpio ports (IR for example) */
|
|
/* see bttv.h for comments */
|
|
|
|
int bttv_get_cardinfo(unsigned int card, int *type, unsigned *cardid)
|
|
{
|
|
printk("The bttv_* interface is obsolete and will go away,\n"
|
|
"please use the new, sysfs based interface instead.\n");
|
|
if (card >= bttv_num) {
|
|
return -1;
|
|
}
|
|
*type = bttvs[card].c.type;
|
|
*cardid = bttvs[card].cardid;
|
|
return 0;
|
|
}
|
|
|
|
struct pci_dev* bttv_get_pcidev(unsigned int card)
|
|
{
|
|
if (card >= bttv_num)
|
|
return NULL;
|
|
return bttvs[card].c.pci;
|
|
}
|
|
|
|
int bttv_get_id(unsigned int card)
|
|
{
|
|
printk("The bttv_* interface is obsolete and will go away,\n"
|
|
"please use the new, sysfs based interface instead.\n");
|
|
if (card >= bttv_num) {
|
|
return -1;
|
|
}
|
|
return bttvs[card].c.type;
|
|
}
|
|
|
|
|
|
int bttv_gpio_enable(unsigned int card, unsigned long mask, unsigned long data)
|
|
{
|
|
struct bttv *btv;
|
|
|
|
if (card >= bttv_num) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
btv = &bttvs[card];
|
|
gpio_inout(mask,data);
|
|
if (bttv_gpio)
|
|
bttv_gpio_tracking(btv,"extern enable");
|
|
return 0;
|
|
}
|
|
|
|
int bttv_read_gpio(unsigned int card, unsigned long *data)
|
|
{
|
|
struct bttv *btv;
|
|
|
|
if (card >= bttv_num) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
btv = &bttvs[card];
|
|
|
|
if(btv->shutdown) {
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* prior setting BT848_GPIO_REG_INP is (probably) not needed
|
|
because we set direct input on init */
|
|
*data = gpio_read();
|
|
return 0;
|
|
}
|
|
|
|
int bttv_write_gpio(unsigned int card, unsigned long mask, unsigned long data)
|
|
{
|
|
struct bttv *btv;
|
|
|
|
if (card >= bttv_num) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
btv = &bttvs[card];
|
|
|
|
/* prior setting BT848_GPIO_REG_INP is (probably) not needed
|
|
because direct input is set on init */
|
|
gpio_bits(mask,data);
|
|
if (bttv_gpio)
|
|
bttv_gpio_tracking(btv,"extern write");
|
|
return 0;
|
|
}
|
|
|
|
wait_queue_head_t* bttv_get_gpio_queue(unsigned int card)
|
|
{
|
|
struct bttv *btv;
|
|
|
|
if (card >= bttv_num) {
|
|
return NULL;
|
|
}
|
|
|
|
btv = &bttvs[card];
|
|
if (bttvs[card].shutdown) {
|
|
return NULL;
|
|
}
|
|
return &btv->gpioq;
|
|
}
|
|
|
|
void bttv_i2c_call(unsigned int card, unsigned int cmd, void *arg)
|
|
{
|
|
if (card >= bttv_num)
|
|
return;
|
|
bttv_call_i2c_clients(&bttvs[card], cmd, arg);
|
|
}
|
|
|
|
/*
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* End:
|
|
*/
|