/*
* Copyright(c) 2016, Analogix Semiconductor.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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.
*
* Based on anx7808 driver obtained from chromeos with copyright:
* Copyright(c) 2013, Google Inc.
*
*/
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of_gpio.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <linux/regmap.h>
#include <linux/types.h>
#include <linux/gpio/consumer.h>
#include <linux/regulator/consumer.h>
#include <drm/drmP.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_dp_helper.h>
#include <drm/drm_edid.h>
#include "analogix-anx78xx.h"
#define I2C_NUM_ADDRESSES 5
#define I2C_IDX_TX_P0 0
#define I2C_IDX_TX_P1 1
#define I2C_IDX_TX_P2 2
#define I2C_IDX_RX_P0 3
#define I2C_IDX_RX_P1 4
#define XTAL_CLK 270 /* 27M */
#define AUX_CH_BUFFER_SIZE 16
#define AUX_WAIT_TIMEOUT_MS 15
static const u8 anx78xx_i2c_addresses[] = {
[I2C_IDX_TX_P0] = 