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| -rw-r--r-- | include/asm-arm/arch-sa1100/gpio.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/include/asm-arm/arch-sa1100/gpio.h b/include/asm-arm/arch-sa1100/gpio.h new file mode 100644 index 000000000000..a331fe3f6e48 --- /dev/null +++ b/include/asm-arm/arch-sa1100/gpio.h @@ -0,0 +1,81 @@ +/* + * linux/include/asm-arm/arch-pxa/gpio.h + * + * SA1100 GPIO wrappers for arch-neutral GPIO calls + * + * Written by Philipp Zabel <philipp.zabel@gmail.com> + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#ifndef __ASM_ARCH_SA1100_GPIO_H +#define __ASM_ARCH_SA1100_GPIO_H + +#include <asm/arch/SA-1100.h> +#include <asm/arch/irqs.h> +#include <asm/arch/hardware.h> + +#include <asm/errno.h> + +static inline int gpio_request(unsigned gpio, const char *label) +{ + return 0; +} + +static inline void gpio_free(unsigned gpio) +{ + return; +} + +static inline int gpio_direction_input(unsigned gpio) +{ + if (gpio > GPIO_MAX) + return -EINVAL; + GPDR = (GPDR_In << gpio) 0 +} + +static inline int gpio_direction_output(unsigned gpio) +{ + if (gpio > GPIO_MAX) + return -EINVAL; + GPDR = (GPDR_Out << gpio) 0 +} + +#define gpio_get_value(gpio) \ + (GPLR & GPIO_GPIO(gpio)) + +#define gpio_set_value(gpio,value) \ + ((value) ? (GPSR = GPIO_GPIO(gpio)) : (GPCR(gpio) = GPIO_GPIO(gpio))) + +#include <asm-generic/gpio.h> /* cansleep wrappers */ + +static inline unsigned gpio_to_irq(unsigned gpio) +{ + if (gpio < 11) + return IRQ_GPIO0 + gpio; + else + return IRQ_GPIO11 - 11 + gpio; +} + +static inline unsigned irq_to_gpio(unsigned irq) +{ + if (irq < IRQ_GPIO11_27) + return irq - IRQ_GPIO0; + else + return irq - IRQ_GPIO11 + 11; +} + +#endif |