blob: f7b5543a96a1bf760df9ff1c96f01fba8d4a7968 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 $Id: bttv-if.c,v 1.4 2004/11/17 18:47:47 kraxel Exp $
3
4 bttv-if.c -- old gpio interface to other kernel modules
5 don't use in new code, will go away in 2.7
6 have a look at bttv-gpio.c instead.
7
8 bttv - Bt848 frame grabber driver
9
10 Copyright (C) 1996,97,98 Ralph Metzler (rjkm@thp.uni-koeln.de)
11 & Marcus Metzler (mocm@thp.uni-koeln.de)
12 (c) 1999-2003 Gerd Knorr <kraxel@bytesex.org>
13
14 This program is free software; you can redistribute it and/or modify
15 it under the terms of the GNU General Public License as published by
16 the Free Software Foundation; either version 2 of the License, or
17 (at your option) any later version.
18
19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 GNU General Public License for more details.
23
24 You should have received a copy of the GNU General Public License
25 along with this program; if not, write to the Free Software
26 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27
28*/
29
30#include <linux/module.h>
31#include <linux/init.h>
32#include <linux/delay.h>
33#include <asm/io.h>
34
35#include "bttvp.h"
36
37EXPORT_SYMBOL(bttv_get_cardinfo);
38EXPORT_SYMBOL(bttv_get_pcidev);
39EXPORT_SYMBOL(bttv_get_id);
40EXPORT_SYMBOL(bttv_gpio_enable);
41EXPORT_SYMBOL(bttv_read_gpio);
42EXPORT_SYMBOL(bttv_write_gpio);
43EXPORT_SYMBOL(bttv_get_gpio_queue);
44EXPORT_SYMBOL(bttv_i2c_call);
45
46/* ----------------------------------------------------------------------- */
47/* Exported functions - for other modules which want to access the */
48/* gpio ports (IR for example) */
49/* see bttv.h for comments */
50
51int bttv_get_cardinfo(unsigned int card, int *type, unsigned *cardid)
52{
53 printk("The bttv_* interface is obsolete and will go away,\n"
54 "please use the new, sysfs based interface instead.\n");
55 if (card >= bttv_num) {
56 return -1;
57 }
58 *type = bttvs[card].c.type;
59 *cardid = bttvs[card].cardid;
60 return 0;
61}
62
63struct pci_dev* bttv_get_pcidev(unsigned int card)
64{
65 if (card >= bttv_num)
66 return NULL;
67 return bttvs[card].c.pci;
68}
69
70int bttv_get_id(unsigned int card)
71{
72 printk("The bttv_* interface is obsolete and will go away,\n"
73 "please use the new, sysfs based interface instead.\n");
74 if (card >= bttv_num) {
75 return -1;
76 }
77 return bttvs[card].c.type;
78}
79
80
81int bttv_gpio_enable(unsigned int card, unsigned long mask, unsigned long data)
82{
83 struct bttv *btv;
84
85 if (card >= bttv_num) {
86 return -EINVAL;
87 }
88
89 btv = &bttvs[card];
90 gpio_inout(mask,data);
91 if (bttv_gpio)
92 bttv_gpio_tracking(btv,"extern enable");
93 return 0;
94}
95
96int bttv_read_gpio(unsigned int card, unsigned long *data)
97{
98 struct bttv *btv;
99
100 if (card >= bttv_num) {
101 return -EINVAL;
102 }
103
104 btv = &bttvs[card];
105
106 if(btv->shutdown) {
107 return -ENODEV;
108 }
109
110/* prior setting BT848_GPIO_REG_INP is (probably) not needed
111 because we set direct input on init */
112 *data = gpio_read();
113 return 0;
114}
115
116int bttv_write_gpio(unsigned int card, unsigned long mask, unsigned long data)
117{
118 struct bttv *btv;
119
120 if (card >= bttv_num) {
121 return -EINVAL;
122 }
123
124 btv = &bttvs[card];
125
126/* prior setting BT848_GPIO_REG_INP is (probably) not needed
127 because direct input is set on init */
128 gpio_bits(mask,data);
129 if (bttv_gpio)
130 bttv_gpio_tracking(btv,"extern write");
131 return 0;
132}
133
134wait_queue_head_t* bttv_get_gpio_queue(unsigned int card)
135{
136 struct bttv *btv;
137
138 if (card >= bttv_num) {
139 return NULL;
140 }
141
142 btv = &bttvs[card];
143 if (bttvs[card].shutdown) {
144 return NULL;
145 }
146 return &btv->gpioq;
147}
148
149void bttv_i2c_call(unsigned int card, unsigned int cmd, void *arg)
150{
151 if (card >= bttv_num)
152 return;
153 bttv_call_i2c_clients(&bttvs[card], cmd, arg);
154}
155
156/*
157 * Local variables:
158 * c-basic-offset: 8
159 * End:
160 */