| Milan Svoboda | 25735d1 | 2007-03-21 14:04:08 +0100 | [diff] [blame] | 1 | /* |
| 2 | * linux/include/asm-arm/arch-ixp4xx/gpio.h |
| 3 | * |
| 4 | * IXP4XX GPIO wrappers for arch-neutral GPIO calls |
| 5 | * |
| 6 | * Written by Milan Svoboda <msvoboda@ra.rockwell.com> |
| 7 | * Based on PXA implementation by Philipp Zabel <philipp.zabel@gmail.com> |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 22 | * |
| 23 | */ |
| 24 | |
| 25 | #ifndef __ASM_ARCH_IXP4XX_GPIO_H |
| 26 | #define __ASM_ARCH_IXP4XX_GPIO_H |
| 27 | |
| 28 | #include <asm/hardware.h> |
| 29 | |
| 30 | static inline int gpio_request(unsigned gpio, const char *label) |
| 31 | { |
| 32 | return 0; |
| 33 | } |
| 34 | |
| 35 | static inline void gpio_free(unsigned gpio) |
| 36 | { |
| 37 | return; |
| 38 | } |
| 39 | |
| 40 | static inline int gpio_direction_input(unsigned gpio) |
| 41 | { |
| 42 | gpio_line_config(gpio, IXP4XX_GPIO_IN); |
| 43 | return 0; |
| 44 | } |
| 45 | |
| 46 | static inline int gpio_direction_output(unsigned gpio, int level) |
| 47 | { |
| 48 | gpio_line_set(gpio, level); |
| 49 | gpio_line_config(gpio, IXP4XX_GPIO_OUT); |
| 50 | return 0; |
| 51 | } |
| 52 | |
| 53 | static inline int gpio_get_value(unsigned gpio) |
| 54 | { |
| 55 | int value; |
| 56 | |
| 57 | gpio_line_get(gpio, &value); |
| 58 | |
| 59 | return value; |
| 60 | } |
| 61 | |
| 62 | static inline void gpio_set_value(unsigned gpio, int value) |
| 63 | { |
| 64 | gpio_line_set(gpio, value); |
| 65 | } |
| 66 | |
| 67 | #include <asm-generic/gpio.h> /* cansleep wrappers */ |
| 68 | |
| 69 | extern int gpio_to_irq(int gpio); |
| 70 | extern int irq_to_gpio(int gpio); |
| 71 | |
| 72 | #endif |
| 73 | |