Philipp Zabel | 8a898f1 | 2007-02-12 00:53:14 -0800 | [diff] [blame] | 1 | /* |
| 2 | * linux/include/asm-arm/arch-pxa/gpio.h |
| 3 | * |
| 4 | * PXA GPIO wrappers for arch-neutral GPIO calls |
| 5 | * |
| 6 | * Written by Philipp Zabel <philipp.zabel@gmail.com> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 21 | * |
| 22 | */ |
| 23 | |
| 24 | #ifndef __ASM_ARCH_PXA_GPIO_H |
| 25 | #define __ASM_ARCH_PXA_GPIO_H |
| 26 | |
| 27 | #include <asm/arch/pxa-regs.h> |
Philipp Zabel | 3deac04 | 2007-02-20 13:58:15 -0800 | [diff] [blame] | 28 | #include <asm/irq.h> |
| 29 | #include <asm/hardware.h> |
Philipp Zabel | 8a898f1 | 2007-02-12 00:53:14 -0800 | [diff] [blame] | 30 | |
Philipp Zabel | 1c44f5f | 2008-02-04 22:28:22 -0800 | [diff] [blame] | 31 | #include <asm-generic/gpio.h> |
| 32 | |
| 33 | |
| 34 | /* NOTE: some PXAs have fewer on-chip GPIOs (like PXA255, with 85). |
| 35 | * Those cases currently cause holes in the GPIO number space. |
| 36 | */ |
| 37 | #define NR_BUILTIN_GPIO 128 |
| 38 | |
| 39 | static inline int gpio_get_value(unsigned gpio) |
Philipp Zabel | 8a898f1 | 2007-02-12 00:53:14 -0800 | [diff] [blame] | 40 | { |
Philipp Zabel | 1c44f5f | 2008-02-04 22:28:22 -0800 | [diff] [blame] | 41 | if (__builtin_constant_p(gpio) && (gpio < NR_BUILTIN_GPIO)) |
| 42 | return GPLR(gpio) & GPIO_bit(gpio); |
Philipp Zabel | 3deac04 | 2007-02-20 13:58:15 -0800 | [diff] [blame] | 43 | else |
Philipp Zabel | 1c44f5f | 2008-02-04 22:28:22 -0800 | [diff] [blame] | 44 | return __gpio_get_value(gpio); |
Philipp Zabel | 3deac04 | 2007-02-20 13:58:15 -0800 | [diff] [blame] | 45 | } |
| 46 | |
Philipp Zabel | 1c44f5f | 2008-02-04 22:28:22 -0800 | [diff] [blame] | 47 | static inline void gpio_set_value(unsigned gpio, int value) |
| 48 | { |
| 49 | if (__builtin_constant_p(gpio) && (gpio < NR_BUILTIN_GPIO)) { |
| 50 | if (value) |
| 51 | GPSR(gpio) = GPIO_bit(gpio); |
| 52 | else |
| 53 | GPCR(gpio) = GPIO_bit(gpio); |
| 54 | } else { |
| 55 | __gpio_set_value(gpio, value); |
| 56 | } |
| 57 | } |
Philipp Zabel | 8a898f1 | 2007-02-12 00:53:14 -0800 | [diff] [blame] | 58 | |
Philipp Zabel | 1c44f5f | 2008-02-04 22:28:22 -0800 | [diff] [blame] | 59 | #define gpio_cansleep __gpio_cansleep |
Philipp Zabel | 8a898f1 | 2007-02-12 00:53:14 -0800 | [diff] [blame] | 60 | |
| 61 | #define gpio_to_irq(gpio) IRQ_GPIO(gpio) |
| 62 | #define irq_to_gpio(irq) IRQ_TO_GPIO(irq) |
| 63 | |
| 64 | |
| 65 | #endif |