u-boot/include/asm-arm/arch-kirkwood/gpio.h
Prafulla Wadaskar beca04dd24 Kirkwood: Upgated licencing for files imported from linux source to GPLv2 or later
These are few files directly imported from Linux kernel source.
Those are not modifyed at all ar per strategy.
These files contains source with GPLv2 only
whereas u-boot expects GPLv2 or latter

These files are updated for the same from prior permission from original writes

Acked-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Prafulla Wadaskar <prafulla@marvell.com>
2010-01-23 08:15:48 -06:00

65 lines
2.3 KiB
C

/*
* arch/asm-arm/mach-kirkwood/include/mach/gpio.h
*
* 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
*/
/*
* 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