/* 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for comments */ int bttv_get_cardinfo(unsigned int card, int *type, unsigned *cardid) { printk("The bttv_* interface is obsolete and will go away,\n" "please use the new, sysfs based interface instead.\n"); if (card 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= bttv_num) return NULL; return bttvs[card].c.pci; } int bttv_get_id(unsigned int card) { printk("The bttv_* interface is obsolete and will go away,\n" "please use the new, sysfs based interface instead.\n"); if (card 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; } void bttv_i2c_call(unsigned int card, unsigned int cmd, void *arg) { if (card >= bttv_num) return; bttv_call_i2c_clients(&bttvs[card], cmd, arg); } /* * Local variables: * c-basic-offset: 8 * End: */