2 * linux/include/asm-arm/arch-pxa/gpio.h
4 * PXA GPIO wrappers for arch-neutral GPIO calls
6 * Written by Philipp Zabel <philipp.zabel@gmail.com>
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.
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.
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
24 #ifndef __ASM_ARCH_PXA_GPIO_H
25 #define __ASM_ARCH_PXA_GPIO_H
27 #include <asm/arch/pxa-regs.h>
29 #include <asm/hardware.h>
31 #include <asm-generic/gpio.h>
34 /* NOTE: some PXAs have fewer on-chip GPIOs (like PXA255, with 85).
35 * Those cases currently cause holes in the GPIO number space.
37 #define NR_BUILTIN_GPIO 128
39 static inline int gpio_get_value(unsigned gpio)
41 if (__builtin_constant_p(gpio) && (gpio < NR_BUILTIN_GPIO))
42 return GPLR(gpio) & GPIO_bit(gpio);
44 return __gpio_get_value(gpio);
47 static inline void gpio_set_value(unsigned gpio, int value)
49 if (__builtin_constant_p(gpio) && (gpio < NR_BUILTIN_GPIO)) {
51 GPSR(gpio) = GPIO_bit(gpio);
53 GPCR(gpio) = GPIO_bit(gpio);
55 __gpio_set_value(gpio, value);
59 #define gpio_cansleep __gpio_cansleep
61 #define gpio_to_irq(gpio) IRQ_GPIO(gpio)
62 #define irq_to_gpio(irq) IRQ_TO_GPIO(irq)