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#include <linux/gpio.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/mfd/core.h>
#include <linux/platform_device.h>
#include <linux/seq_file.h>
#include <mach/mt_reg_base.h>
#include <mach/mt_gpio_base.h>
#include <mach/mt_gpio_core.h>
#include <mach/eint.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/spinlock.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/debugfs.h>
#include <linux/of_gpio.h>
#include <linux/idr.h>
static const signed int pin_eint_map[MT_GPIO_BASE_MAX] = {
};
static int mtk_gpio_request(struct gpio_chip *chip, unsigned offset)
{
return mt_set_gpio_mode_base(offset, 0);
}
static int mtk_get_gpio_direction(struct gpio_chip *chip, unsigned offset)
{
return 1 - mt_get_gpio_dir_base(offset);
}
static int mtk_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
{
return mt_set_gpio_dir_base(offset, 0);
}
static int mtk_gpio_get(struct gpio_chip *chip, unsigned offset)
{
int status = mt_get_gpio_dir_base(offset);
if (status == 0)
return mt_get_gpio_in_base(offset);
else if (status == 1)
return mt_get_gpio_out_base(offset);
return 1;
}
static int mtk_gpio_direction_output(struct gpio_chip *chip, unsigned offset, int value)
{
return mt_set_gpio_dir_base(offset, 1);
}
static void mtk_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
{
mt_set_gpio_out_base(offset, value);
}
static int mtk_gpio_to_irq(struct gpio_chip *chip, unsigned pin)
{
return mt_gpio_to_irq(pin);
}
static int mtk_gpio_set_debounce(struct gpio_chip *chip, unsigned offset, unsigned debounce)
{
mt_eint_set_hw_debounce(offset, debounce >> 10);
return 0;
}
static struct gpio_chip mtk_gpio_chip = {
.label = "mtk-gpio",
.request = mtk_gpio_request,
.get_direction = mtk_get_gpio_direction,
.direction_input = mtk_gpio_direction_input,
.get = mtk_gpio_get,
.direction_output = mtk_gpio_direction_output,
.set = mtk_gpio_set,
.base = MT_GPIO_BASE_START,
.ngpio = MT_GPIO_BASE_MAX,
.to_irq = mtk_gpio_to_irq,
.set_debounce = mtk_gpio_set_debounce,
};
static int __init mtk_gpio_init(void)
{
return gpiochip_add(&mtk_gpio_chip);
}
postcore_initcall(mtk_gpio_init);
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