mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-09-09 06:13:21 +09:00
52 lines
1.7 KiB
C
52 lines
1.7 KiB
C
/*
|
|
* arch/asm-arm/mach-kirkwood/include/mach/gpio.h
|
|
*
|
|
* This file is licensed under the terms of the GNU General Public
|
|
* License version 2. This program is licensed "as is" without any
|
|
* warranty of any kind, whether express or implied.
|
|
*/
|
|
|
|
/*
|
|
* Based on (mostly copied from) plat-orion based Linux 2.6 kernel driver.
|
|
* Removed kernel level irq handling. Took some macros from kernel to
|
|
* allow build.
|
|
*
|
|
* Dieter Kiermaier dk-arm-linux@gmx.de
|
|
*/
|
|
|
|
#ifndef __KIRKWOOD_GPIO_H
|
|
#define __KIRKWOOD_GPIO_H
|
|
|
|
/* got from kernel include/linux/bitops.h */
|
|
#define BITS_PER_BYTE 8
|
|
#define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long))
|
|
|
|
#define GPIO_MAX 50
|
|
#define GPIO_OFF(pin) (((pin) >> 5) ? 0x0040 : 0x0000)
|
|
#define GPIO_OUT(pin) (KW_GPIO0_BASE + GPIO_OFF(pin) + 0x00)
|
|
#define GPIO_IO_CONF(pin) (KW_GPIO0_BASE + GPIO_OFF(pin) + 0x04)
|
|
#define GPIO_BLINK_EN(pin) (KW_GPIO0_BASE + GPIO_OFF(pin) + 0x08)
|
|
#define GPIO_IN_POL(pin) (KW_GPIO0_BASE + GPIO_OFF(pin) + 0x0c)
|
|
#define GPIO_DATA_IN(pin) (KW_GPIO0_BASE + GPIO_OFF(pin) + 0x10)
|
|
#define GPIO_EDGE_CAUSE(pin) (KW_GPIO0_BASE + GPIO_OFF(pin) + 0x14)
|
|
#define GPIO_EDGE_MASK(pin) (KW_GPIO0_BASE + GPIO_OFF(pin) + 0x18)
|
|
#define GPIO_LEVEL_MASK(pin) (KW_GPIO0_BASE + GPIO_OFF(pin) + 0x1c)
|
|
|
|
/*
|
|
* Kirkwood-specific GPIO API
|
|
*/
|
|
|
|
void kw_gpio_set_valid(unsigned pin, int mode);
|
|
int kw_gpio_is_valid(unsigned pin, int mode);
|
|
int kw_gpio_direction_input(unsigned pin);
|
|
int kw_gpio_direction_output(unsigned pin, int value);
|
|
int kw_gpio_get_value(unsigned pin);
|
|
void kw_gpio_set_value(unsigned pin, int value);
|
|
void kw_gpio_set_blink(unsigned pin, int blink);
|
|
void kw_gpio_set_unused(unsigned pin);
|
|
|
|
#define GPIO_INPUT_OK (1 << 0)
|
|
#define GPIO_OUTPUT_OK (1 << 1)
|
|
|
|
#endif
|