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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 | /* 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) { 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= bttv_num) return NULL; return bttvs[card].c.pci; } int bttv_get_id(unsigned int card) { printk("bttv_get_id is obsolete, use bttv_get_cardinfo instead\n"); if (card 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; } /* * Local variables: * c-basic-offset: 8 * End: */ |