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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2014-2017 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 <stdint.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_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 {
/* DiplayPort interface control. */
uint8_t dp_interface_ctrl;
/* LVDS interface control register 1. */
uint8_t lvds_interface_ctrl1;
/* LVDS interface control register 2. */
uint8_t lvds_interface_ctrl2;
/* LVDS interface control register 3. */
uint8_t lvds_interface_ctrl3;
/* Select which EDID-block is emulated. */
uint8_t edid_rom_emulation;
/* Select which EDID block to map to 0..0x7F. */
uint8_t edid_rom_access_ctrl;
/* Smallest PWM frequency for back light. */
uint8_t pwm_min[3];
/* Biggest PWM frequency for back light. */
uint8_t pwm_max[3];
/* Fast link training control register. */
uint8_t fast_link_ctrl;
/* Pin configuration control register 1. */
uint8_t pin_cfg_ctrl1;
/* Pin configuration control register 2. */
uint8_t pin_cfg_ctrl2;
/* Default PWM bit count in DPCD register. */
uint8_t pwm_default;
/* Current PWM bit count in DPCD register. */
uint16_t pwm_value;
/* Default PWM frequency in DPCD register. */
uint8_t pwm_default_freq;
/* Panel T3 timing value. */
uint8_t t3_timing;
/* Panel T12 timing value. */
uint8_t t12_timing;
/* Back light control register. */
uint8_t backlight_ctrl;
/* Panel T2 delay. */
uint8_t t2_delay;
/* Panel T4 timing value. */
uint8_t t4_timing;
/* Panel T5 delay. */
uint8_t t5_delay;
} __attribute__((packed));
struct ptn_3460_flash {
/* Flash command (erase or erase and flash). */
uint8_t cmd;
/* Magic number needed by the flash algorithm. */
uint16_t magic;
/* Trigger for starting flash operation. */
uint8_t trigger;
} __attribute__((packed));
int ptn3460_init(const char *hwi_block);
int ptn3460_write_edid(uint8_t edid_num, const uint8_t data[PTN_EDID_LEN]);
int ptn_select_edid(uint8_t edid_num);
#endif /* PTN3460_H_ */
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