| /* | |
| * Copyright (C) 2007 Felix Fietkau <[email protected]> | |
| * Copyright (C) 2007 Eugene Konev <[email protected]> | |
| * | |
| * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
| */ | |
| #include <linux/module.h> | |
| #include <asm/mach-ar7/gpio.h> | |
| static const char *ar7_gpio_list[AR7_GPIO_MAX]; | |
| int gpio_request(unsigned gpio, const char *label) | |
| { | |
| if (gpio >= AR7_GPIO_MAX) | |
| return -EINVAL; | |
| if (ar7_gpio_list[gpio]) | |
| return -EBUSY; | |
| if (label) | |
| ar7_gpio_list[gpio] = label; | |
| else | |
| ar7_gpio_list[gpio] = "busy"; | |
| return 0; | |
| } | |
| EXPORT_SYMBOL(gpio_request); | |
| void gpio_free(unsigned gpio) | |
| { | |
| BUG_ON(!ar7_gpio_list[gpio]); | |
| ar7_gpio_list[gpio] = NULL; | |
| } | |
| EXPORT_SYMBOL(gpio_free); |