Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | |
| 3 | bttv-if.c -- old gpio interface to other kernel modules |
Mauro Carvalho Chehab | 4ac9791 | 2005-11-08 21:37:43 -0800 | [diff] [blame] | 4 | don't use in new code, will go away in 2.7 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) |
Mauro Carvalho Chehab | 4ac9791 | 2005-11-08 21:37:43 -0800 | [diff] [blame] | 10 | & Marcus Metzler (mocm@thp.uni-koeln.de) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
| 36 | EXPORT_SYMBOL(bttv_get_cardinfo); |
| 37 | EXPORT_SYMBOL(bttv_get_pcidev); |
| 38 | EXPORT_SYMBOL(bttv_get_id); |
| 39 | EXPORT_SYMBOL(bttv_gpio_enable); |
| 40 | EXPORT_SYMBOL(bttv_read_gpio); |
| 41 | EXPORT_SYMBOL(bttv_write_gpio); |
| 42 | EXPORT_SYMBOL(bttv_get_gpio_queue); |
| 43 | EXPORT_SYMBOL(bttv_i2c_call); |
| 44 | |
| 45 | /* ----------------------------------------------------------------------- */ |
| 46 | /* Exported functions - for other modules which want to access the */ |
| 47 | /* gpio ports (IR for example) */ |
| 48 | /* see bttv.h for comments */ |
| 49 | |
| 50 | int bttv_get_cardinfo(unsigned int card, int *type, unsigned *cardid) |
| 51 | { |
| 52 | printk("The bttv_* interface is obsolete and will go away,\n" |
| 53 | "please use the new, sysfs based interface instead.\n"); |
| 54 | if (card >= bttv_num) { |
| 55 | return -1; |
| 56 | } |
| 57 | *type = bttvs[card].c.type; |
| 58 | *cardid = bttvs[card].cardid; |
| 59 | return 0; |
| 60 | } |
| 61 | |
| 62 | struct pci_dev* bttv_get_pcidev(unsigned int card) |
| 63 | { |
| 64 | if (card >= bttv_num) |
| 65 | return NULL; |
| 66 | return bttvs[card].c.pci; |
| 67 | } |
| 68 | |
| 69 | int bttv_get_id(unsigned int card) |
| 70 | { |
| 71 | printk("The bttv_* interface is obsolete and will go away,\n" |
| 72 | "please use the new, sysfs based interface instead.\n"); |
| 73 | if (card >= bttv_num) { |
| 74 | return -1; |
| 75 | } |
| 76 | return bttvs[card].c.type; |
| 77 | } |
| 78 | |
| 79 | |
| 80 | int bttv_gpio_enable(unsigned int card, unsigned long mask, unsigned long data) |
| 81 | { |
| 82 | struct bttv *btv; |
| 83 | |
| 84 | if (card >= bttv_num) { |
| 85 | return -EINVAL; |
| 86 | } |
| 87 | |
| 88 | btv = &bttvs[card]; |
| 89 | gpio_inout(mask,data); |
| 90 | if (bttv_gpio) |
| 91 | bttv_gpio_tracking(btv,"extern enable"); |
| 92 | return 0; |
| 93 | } |
| 94 | |
| 95 | int bttv_read_gpio(unsigned int card, unsigned long *data) |
| 96 | { |
| 97 | struct bttv *btv; |
| 98 | |
| 99 | if (card >= bttv_num) { |
| 100 | return -EINVAL; |
| 101 | } |
| 102 | |
| 103 | btv = &bttvs[card]; |
| 104 | |
| 105 | if(btv->shutdown) { |
| 106 | return -ENODEV; |
| 107 | } |
| 108 | |
| 109 | /* prior setting BT848_GPIO_REG_INP is (probably) not needed |
| 110 | because we set direct input on init */ |
| 111 | *data = gpio_read(); |
| 112 | return 0; |
| 113 | } |
| 114 | |
| 115 | int bttv_write_gpio(unsigned int card, unsigned long mask, unsigned long data) |
| 116 | { |
| 117 | struct bttv *btv; |
| 118 | |
| 119 | if (card >= bttv_num) { |
| 120 | return -EINVAL; |
| 121 | } |
| 122 | |
| 123 | btv = &bttvs[card]; |
| 124 | |
| 125 | /* prior setting BT848_GPIO_REG_INP is (probably) not needed |
| 126 | because direct input is set on init */ |
| 127 | gpio_bits(mask,data); |
| 128 | if (bttv_gpio) |
| 129 | bttv_gpio_tracking(btv,"extern write"); |
| 130 | return 0; |
| 131 | } |
| 132 | |
| 133 | wait_queue_head_t* bttv_get_gpio_queue(unsigned int card) |
| 134 | { |
| 135 | struct bttv *btv; |
| 136 | |
| 137 | if (card >= bttv_num) { |
| 138 | return NULL; |
| 139 | } |
| 140 | |
| 141 | btv = &bttvs[card]; |
| 142 | if (bttvs[card].shutdown) { |
| 143 | return NULL; |
| 144 | } |
| 145 | return &btv->gpioq; |
| 146 | } |
| 147 | |
| 148 | void bttv_i2c_call(unsigned int card, unsigned int cmd, void *arg) |
| 149 | { |
| 150 | if (card >= bttv_num) |
| 151 | return; |
| 152 | bttv_call_i2c_clients(&bttvs[card], cmd, arg); |
| 153 | } |
| 154 | |
| 155 | /* |
| 156 | * Local variables: |
| 157 | * c-basic-offset: 8 |
| 158 | * End: |
| 159 | */ |