/*
 * This file is part of the coreboot project.
 *
 * Copyright 2014 Rockchip Inc.
 *
 * 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; version 2 of the License.
 *
 * 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 St, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef __SOC_ROCKCHIP_RK3288_GPIO_H__
#define __SOC_ROCKCHIP_RK3288_GPIO_H__

#include "addressmap.h"
#include "grf.h"

#define GPIO(p, b, i) ((gpio_t){.port = p, .bank = GPIO_##b, .idx = i})

struct rk3288_gpio_regs {
	u32 swporta_dr;
	u32 swporta_ddr;
	u32 reserved0[(0x30 - 0x08) / 4];
	u32 inten;
	u32 intmask;
	u32 inttype_level;
	u32 int_polarity;
	u32 int_status;
	u32 int_rawstatus;
	u32 debounce;
	u32 porta_eoi;
	u32 ext_porta;
	u32 reserved1[(0x60 - 0x54) / 4];
	u32 ls_sync;
};
check_member(rk3288_gpio_regs, ls_sync, 0x60);

typedef union {
	u32 raw;
	struct {
		u16 port;
		union {
			struct {
				u16 num:5;
				u16 :11;
			};
			struct {
				u16 idx:3;
				u16 bank:2;
				u16 :11;
			};
		};
	};
} gpio_t;

enum {
	GPIO_A = 0,
	GPIO_B,
	GPIO_C,
	GPIO_D,
};

void gpio_input(gpio_t gpio);
void gpio_input_pulldown(gpio_t gpio);
void gpio_input_pullup(gpio_t gpio);
void gpio_output(gpio_t gpio, int value);
int gpio_get_in_value(gpio_t gpio);

#endif	/* _ASM_ROCKCHIP_GPIO_H_ */