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/*
* (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
*/
#include <common.h>
#include <asm/io.h>
#include <asm/errno.h>
#include "mvgpio.h"
#include <asm/gpio.h>
#ifndef MV_MAX_GPIO
#define MV_MAX_GPIO 128
#endif
int gpio_request(unsigned gpio, const char *label)
{
if (gpio >= MV_MAX_GPIO) {
printf("%s: Invalid GPIO requested %d\n", __func__, gpio);
return -1;
}
return 0;
}
int gpio_free(unsigned gpio)
{
return 0;
}
int gpio_direction_input(unsigned gpio)
{
struct gpio_reg *gpio_reg_bank;
if (gpio >= MV_MAX_GPIO) {
printf("%s: Invalid GPIO %d\n", __func__, gpio);
return -1;
}
gpio_reg_bank = get_gpio_base(GPIO_TO_REG(gpio));
writel(GPIO_TO_BIT(gpio), &gpio_reg_bank->gcdr);
return 0;
}
int gpio_direction_output(unsigned gpio, int value)
{
struct gpio_reg *gpio_reg_bank;
if (gpio >= MV_MAX_GPIO) {
printf("%s: Invalid GPIO %d\n", __func__, gpio);
return -1;
}
gpio_reg_bank = get_gpio_base(GPIO_TO_REG(gpio));
writel(GPIO_TO_BIT(gpio), &gpio_reg_bank->gsdr);
gpio_set_value(gpio, value);
return 0;
}
int gpio_get_value(unsigned gpio)
{
struct gpio_reg *gpio_reg_bank;
u32 gpio_val;
if (gpio >= MV_MAX_GPIO) {
printf("%s: Invalid GPIO %d\n", __func__, gpio);
return -1;
}
gpio_reg_bank = get_gpio_base(GPIO_TO_REG(gpio));
gpio_val = readl(&gpio_reg_bank->gplr);
return GPIO_VAL(gpio, gpio_val);
}
int gpio_set_value(unsigned gpio, int value)
{
struct gpio_reg *gpio_reg_bank;
if (gpio >= MV_MAX_GPIO) {
printf("%s: Invalid GPIO %d\n", __func__, gpio);
return -1;
}
gpio_reg_bank = get_gpio_base(GPIO_TO_REG(gpio));
if (value)
writel(GPIO_TO_BIT(gpio), &gpio_reg_bank->gpsr);
else
writel(GPIO_TO_BIT(gpio), &gpio_reg_bank->gpcr);
return 0;
}
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