Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 1 | /* |
| 2 | * arch/arm/mach-ixp4xx/include/mach/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 | |
Uwe Kleine-König | 9c65685 | 2008-10-29 14:14:54 -0700 | [diff] [blame] | 28 | #include <linux/kernel.h> |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 29 | #include <mach/hardware.h> |
| 30 | |
Russell King | 8f3c453 | 2011-08-08 13:58:28 +0100 | [diff] [blame] | 31 | #define __ARM_GPIOLIB_COMPLEX |
| 32 | |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 33 | static inline int gpio_request(unsigned gpio, const char *label) |
| 34 | { |
| 35 | return 0; |
| 36 | } |
| 37 | |
| 38 | static inline void gpio_free(unsigned gpio) |
| 39 | { |
Uwe Kleine-König | 9c65685 | 2008-10-29 14:14:54 -0700 | [diff] [blame] | 40 | might_sleep(); |
| 41 | |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 42 | return; |
| 43 | } |
| 44 | |
| 45 | static inline int gpio_direction_input(unsigned gpio) |
| 46 | { |
| 47 | gpio_line_config(gpio, IXP4XX_GPIO_IN); |
| 48 | return 0; |
| 49 | } |
| 50 | |
| 51 | static inline int gpio_direction_output(unsigned gpio, int level) |
| 52 | { |
| 53 | gpio_line_set(gpio, level); |
| 54 | gpio_line_config(gpio, IXP4XX_GPIO_OUT); |
| 55 | return 0; |
| 56 | } |
| 57 | |
| 58 | static inline int gpio_get_value(unsigned gpio) |
| 59 | { |
| 60 | int value; |
| 61 | |
| 62 | gpio_line_get(gpio, &value); |
| 63 | |
| 64 | return value; |
| 65 | } |
| 66 | |
| 67 | static inline void gpio_set_value(unsigned gpio, int value) |
| 68 | { |
| 69 | gpio_line_set(gpio, value); |
| 70 | } |
| 71 | |
| 72 | #include <asm-generic/gpio.h> /* cansleep wrappers */ |
| 73 | |
| 74 | extern int gpio_to_irq(int gpio); |
Russell King | 01e7dc8 | 2011-07-26 11:29:42 +0100 | [diff] [blame] | 75 | #define gpio_to_irq gpio_to_irq |
Roel Kluin | efec194 | 2009-11-03 23:05:32 +0100 | [diff] [blame] | 76 | extern int irq_to_gpio(unsigned int irq); |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 77 | |
| 78 | #endif |
| 79 | |