Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | /* |
| 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 | |
| 37 | EXPORT_SYMBOL(bttv_get_cardinfo); |
| 38 | EXPORT_SYMBOL(bttv_get_pcidev); |
| 39 | EXPORT_SYMBOL(bttv_get_id); |
| 40 | EXPORT_SYMBOL(bttv_gpio_enable); |
| 41 | EXPORT_SYMBOL(bttv_read_gpio); |
| 42 | EXPORT_SYMBOL(bttv_write_gpio); |
| 43 | EXPORT_SYMBOL(bttv_get_gpio_queue); |
| 44 | EXPORT_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 | |
| 51 | int 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| 53 | printk("The bttv_* interface is obsolete and will go away,\n" |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 | |
| 63 | struct 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 | |
| 70 | int 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 | |
| 81 | int 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 | |
| 96 | int 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 | |
| 116 | int 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 | |
| 134 | wait_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 | |
| 149 | void 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 | */ |