Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 LT |
2 | |
3 | bttv-if.c -- old gpio interface to other kernel modules | |
4ac97914 | 4 | don't use in new code, will go away in 2.7 |
1da177e4 LT |
5 | have a look at bttv-gpio.c instead. |
6 | ||
7 | bttv - Bt848 frame grabber driver | |
8 | ||
9 | Copyright (C) 1996,97,98 Ralph Metzler (rjkm@thp.uni-koeln.de) | |
4ac97914 | 10 | & Marcus Metzler (mocm@thp.uni-koeln.de) |
1da177e4 LT |
11 | (c) 1999-2003 Gerd Knorr <kraxel@bytesex.org> |
12 | ||
13 | This program is free software; you can redistribute it and/or modify | |
14 | it under the terms of the GNU General Public License as published by | |
15 | the Free Software Foundation; either version 2 of the License, or | |
16 | (at your option) any later version. | |
17 | ||
18 | This program is distributed in the hope that it will be useful, | |
19 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | GNU General Public License for more details. | |
22 | ||
23 | You should have received a copy of the GNU General Public License | |
24 | along with this program; if not, write to the Free Software | |
25 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
26 | ||
27 | */ | |
28 | ||
29 | #include <linux/module.h> | |
30 | #include <linux/init.h> | |
31 | #include <linux/delay.h> | |
32 | #include <asm/io.h> | |
33 | ||
34 | #include "bttvp.h" | |
35 | ||
1da177e4 | 36 | EXPORT_SYMBOL(bttv_get_pcidev); |
1da177e4 LT |
37 | EXPORT_SYMBOL(bttv_gpio_enable); |
38 | EXPORT_SYMBOL(bttv_read_gpio); | |
39 | EXPORT_SYMBOL(bttv_write_gpio); | |
1da177e4 LT |
40 | |
41 | /* ----------------------------------------------------------------------- */ | |
42 | /* Exported functions - for other modules which want to access the */ | |
43 | /* gpio ports (IR for example) */ | |
44 | /* see bttv.h for comments */ | |
45 | ||
1da177e4 LT |
46 | struct pci_dev* bttv_get_pcidev(unsigned int card) |
47 | { | |
48 | if (card >= bttv_num) | |
49 | return NULL; | |
4b10d3b6 TP |
50 | if (!bttvs[card]) |
51 | return NULL; | |
52 | ||
53 | return bttvs[card]->c.pci; | |
1da177e4 LT |
54 | } |
55 | ||
1da177e4 LT |
56 | |
57 | int bttv_gpio_enable(unsigned int card, unsigned long mask, unsigned long data) | |
58 | { | |
59 | struct bttv *btv; | |
60 | ||
61 | if (card >= bttv_num) { | |
62 | return -EINVAL; | |
63 | } | |
64 | ||
4b10d3b6 TP |
65 | btv = bttvs[card]; |
66 | if (!btv) | |
67 | return -ENODEV; | |
68 | ||
1da177e4 LT |
69 | gpio_inout(mask,data); |
70 | if (bttv_gpio) | |
71 | bttv_gpio_tracking(btv,"extern enable"); | |
72 | return 0; | |
73 | } | |
74 | ||
75 | int bttv_read_gpio(unsigned int card, unsigned long *data) | |
76 | { | |
77 | struct bttv *btv; | |
78 | ||
79 | if (card >= bttv_num) { | |
80 | return -EINVAL; | |
81 | } | |
82 | ||
4b10d3b6 TP |
83 | btv = bttvs[card]; |
84 | if (!btv) | |
85 | return -ENODEV; | |
1da177e4 LT |
86 | |
87 | if(btv->shutdown) { | |
88 | return -ENODEV; | |
89 | } | |
90 | ||
91 | /* prior setting BT848_GPIO_REG_INP is (probably) not needed | |
92 | because we set direct input on init */ | |
93 | *data = gpio_read(); | |
94 | return 0; | |
95 | } | |
96 | ||
97 | int bttv_write_gpio(unsigned int card, unsigned long mask, unsigned long data) | |
98 | { | |
99 | struct bttv *btv; | |
100 | ||
101 | if (card >= bttv_num) { | |
102 | return -EINVAL; | |
103 | } | |
104 | ||
4b10d3b6 TP |
105 | btv = bttvs[card]; |
106 | if (!btv) | |
107 | return -ENODEV; | |
1da177e4 LT |
108 | |
109 | /* prior setting BT848_GPIO_REG_INP is (probably) not needed | |
110 | because direct input is set on init */ | |
111 | gpio_bits(mask,data); | |
112 | if (bttv_gpio) | |
113 | bttv_gpio_tracking(btv,"extern write"); | |
114 | return 0; | |
115 | } | |
116 | ||
1da177e4 LT |
117 | /* |
118 | * Local variables: | |
119 | * c-basic-offset: 8 | |
120 | * End: | |
121 | */ |