/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2014 Siemens AG
 *
 * 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.
 */

#ifndef PTN3460_H_
#define PTN3460_H_

#include <delay.h>
#include "lcd_panel.h"

#define PTN_SLAVE_ADR		0x20
#define PTN_I2C_CONTROLLER	0

#define PTN_EDID_OFF		0x00
#define PTN_EDID_LEN		0x80
#define PTN_CONFIG_OFF		0x80
#define PTN_CONFIG_LEN		0x19
#define PTN_FLASH_CFG_OFF	0xE8
#define PTN_FLASH_CFG_LEN	0x04
#define PTN_MAX_EDID_NUM	6

/* Define some error codes that can be used */
#define PTN_NO_ERROR		0x00000000
#define PTN_BUS_ERROR		0x10000000
#define PTN_INVALID_EDID	0x20000000

struct ptn_3460_config{
	u8	dp_interface_ctrl;	/* DiplayPort interface control */
	u8	lvds_interface_ctrl1;	/* LVDS interface control register 1 */
	u8	lvds_interface_ctrl2;	/* LVDS interface control register 2 */
	u8	lvds_interface_ctrl3;	/* LVDS interface control register 3 */
	u8	edid_rom_emulation;	/* select which EDID-block is emulated */
	u8	edid_rom_access_ctrl;	/* select which EDID block to map to 0..0x7F */
	u8	pwm_min[3];		/* smallest PWM frequency for back light */
	u8	pwm_max[3];		/* biggest PWM frequency for back light */
	u8	fast_link_ctrl;		/* Fast link training control register */
	u8	pin_cfg_ctrl1;		/* Pin configuration control register 1 */
	u8	pin_cfg_ctrl2;		/* Pin configuration control register 2 */
	u8	pwm_default;		/* Default PWM bit count in DPCD register */
	u16	pwm_value;		/* Current PWM bit count in DPCD register */
	u8	pwm_default_freq;	/* Default PWM frequency in DPCD register */
	u8	t3_timing;		/* Panel T3 timing value */
	u8	t12_timing;		/* Panel T12 timing value */
	u8	backlight_ctrl;		/* Back light control register */
	u8	t2_delay;		/* Panel T2 delay */
	u8	t4_timing;		/* Panel T4 timing value */
	u8	t5_delay;		/* Panel T5 delay */
} __packed;

struct ptn_3460_flash{
	u8	cmd;			/* Flash command (erase or erase and flash) */
	u16	magic;			/* Magic number needed by the flash algorithm */
	u8	trigger;		/* Trigger for starting flash operation */
} __packed;


int ptn3460_init(char *hwi_block);
int ptn3460_read_edid(u8 edid_num, u8 *data);
int ptn3460_write_edid(u8 edid_num, u8 *data);
int ptn_select_edid(u8 edid_num);
int ptn3460_flash_config(void);
#endif /* PTN3460_H_ */