2 * arch/asm-arm/mach-kirkwood/include/mach/gpio.h
4 * This file is licensed under the terms of the GNU General Public
5 * License version 2. This program is licensed "as is" without any
6 * warranty of any kind, whether express or implied.
10 * Based on (mostly copied from) plat-orion based Linux 2.6 kernel driver.
11 * Removed kernel level irq handling. Took some macros from kernel to
14 * Dieter Kiermaier dk-arm-linux@gmx.de
17 #ifndef __KIRKWOOD_GPIO_H
18 #define __KIRKWOOD_GPIO_H
20 /* got from kernel include/linux/bitops.h */
21 #define BITS_PER_BYTE 8
22 #define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long))
25 #define GPIO_OFF(pin) (((pin) >> 5) ? 0x0040 : 0x0000)
26 #define GPIO_OUT(pin) (KW_GPIO0_BASE + GPIO_OFF(pin) + 0x00)
27 #define GPIO_IO_CONF(pin) (KW_GPIO0_BASE + GPIO_OFF(pin) + 0x04)
28 #define GPIO_BLINK_EN(pin) (KW_GPIO0_BASE + GPIO_OFF(pin) + 0x08)
29 #define GPIO_IN_POL(pin) (KW_GPIO0_BASE + GPIO_OFF(pin) + 0x0c)
30 #define GPIO_DATA_IN(pin) (KW_GPIO0_BASE + GPIO_OFF(pin) + 0x10)
31 #define GPIO_EDGE_CAUSE(pin) (KW_GPIO0_BASE + GPIO_OFF(pin) + 0x14)
32 #define GPIO_EDGE_MASK(pin) (KW_GPIO0_BASE + GPIO_OFF(pin) + 0x18)
33 #define GPIO_LEVEL_MASK(pin) (KW_GPIO0_BASE + GPIO_OFF(pin) + 0x1c)
36 * Kirkwood-specific GPIO API
39 void kw_gpio_set_valid(unsigned pin, int mode);
40 int kw_gpio_is_valid(unsigned pin, int mode);
41 int kw_gpio_direction_input(unsigned pin);
42 int kw_gpio_direction_output(unsigned pin, int value);
43 int kw_gpio_get_value(unsigned pin);
44 void kw_gpio_set_value(unsigned pin, int value);
45 void kw_gpio_set_blink(unsigned pin, int blink);
46 void kw_gpio_set_unused(unsigned pin);
48 #define GPIO_INPUT_OK (1 << 0)
49 #define GPIO_OUTPUT_OK (1 << 1)