diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/include/asm/arch-armada100/gpio.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-armada100/gpio.h b/arch/arm/include/asm/arch-armada100/gpio.h new file mode 100644 index 0000000..9e5e7b9 --- /dev/null +++ b/arch/arm/include/asm/arch-armada100/gpio.h @@ -0,0 +1,48 @@ +/* + * (C) Copyright 2011 + * eInfochips Ltd. <www.einfochips.com> + * Written-by: Ajay Bhargav <ajay.bhargav@einfochips.com> + * + * (C) Copyright 2010 + * Marvell Semiconductor <www.marvell.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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., 51 Franklin Street, Fifth Floor, Boston, + * MA 02110-1301 USA + */ + +#ifndef _ASM_ARCH_GPIO_H +#define _ASM_ARCH_GPIO_H + +#include <asm/types.h> +#include <asm/arch/armada100.h> + +#define GPIO_HIGH 1 +#define GPIO_LOW 0 + +#define GPIO_TO_REG(gp) (gp >> 5) +#define GPIO_TO_BIT(gp) (1 << (gp & 0x1F)) +#define GPIO_VAL(gp, val) ((val >> (gp & 0x1F)) & 0x01) + +static inline void *get_gpio_base(int bank) +{ + const unsigned int offset[4] = {0, 4, 8, 0x100}; + /* gpio register bank offset - refer Appendix A.36 */ + return (struct gpio_reg *)(ARMD1_GPIO_BASE + offset[bank]); +} + +#endif /* _ASM_ARCH_GPIO_H */ |