mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-03 09:16:43 +07:00
25735d10ba
This patch brings generic gpio layer support to ixp4xx. It creates
functions needed for gpio->irq and irq->gpio translation.
It expects and initial value to be passed to
gpio_direction_output() which has been introduced by
commit 28735a7253 in Linus git tree.
Generic gpio layer is going to be used by pxa2xx_udc driver.
Signed-off-by: Milan Svoboda <msvoboda@ra.rockwell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
74 lines
1.8 KiB
C
74 lines
1.8 KiB
C
/*
|
|
* linux/include/asm-arm/arch-ixp4xx/gpio.h
|
|
*
|
|
* IXP4XX GPIO wrappers for arch-neutral GPIO calls
|
|
*
|
|
* Written by Milan Svoboda <msvoboda@ra.rockwell.com>
|
|
* Based on PXA implementation 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_IXP4XX_GPIO_H
|
|
#define __ASM_ARCH_IXP4XX_GPIO_H
|
|
|
|
#include <asm/hardware.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)
|
|
{
|
|
gpio_line_config(gpio, IXP4XX_GPIO_IN);
|
|
return 0;
|
|
}
|
|
|
|
static inline int gpio_direction_output(unsigned gpio, int level)
|
|
{
|
|
gpio_line_set(gpio, level);
|
|
gpio_line_config(gpio, IXP4XX_GPIO_OUT);
|
|
return 0;
|
|
}
|
|
|
|
static inline int gpio_get_value(unsigned gpio)
|
|
{
|
|
int value;
|
|
|
|
gpio_line_get(gpio, &value);
|
|
|
|
return value;
|
|
}
|
|
|
|
static inline void gpio_set_value(unsigned gpio, int value)
|
|
{
|
|
gpio_line_set(gpio, value);
|
|
}
|
|
|
|
#include <asm-generic/gpio.h> /* cansleep wrappers */
|
|
|
|
extern int gpio_to_irq(int gpio);
|
|
extern int irq_to_gpio(int gpio);
|
|
|
|
#endif
|
|
|