/*
 * Copyright (c) 2020 Actions Technology Co., Ltd
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <sys/byteorder.h>
#include "panel_ft2308.h"
#include "panel_device.h"

/*********************
 *      DEFINES
 *********************/

/**********************
 *      TYPEDEFS
 **********************/

/**********************
 *  STATIC PROTOTYPES
 **********************/

/**********************
 *  STATIC VARIABLES
 **********************/

/**********************
 *      MACROS
 **********************/

/**********************
 *  FUNCTIONS
 **********************/
static void _panel_transmit(const struct device *dev, uint32_t cmd,
		const uint8_t *tx_data, size_t tx_count)
{
	struct lcd_panel_data *data = dev->data;

	assert(data->transfering == 0);

	display_controller_write_config(data->lcdc_dev, DDIC_QSPI_CMD_WR(cmd), tx_data, tx_count);
}

static inline void _panel_transmit_cmd(const struct device *dev, uint32_t cmd)
{
	_panel_transmit(dev, cmd, NULL, 0);
}

static inline void _panel_transmit_p1(const struct device *dev, uint32_t cmd, uint8_t tx_data)
{
	_panel_transmit(dev, cmd, &tx_data, 1);
}

__unused
static void _panel_transmit_p2(const struct device *dev, uint32_t cmd, uint8_t tx_data0, uint8_t tx_data1)
{
	uint8_t tx_data[] = { tx_data0, tx_data1 };
	_panel_transmit(dev, cmd, tx_data, sizeof(tx_data));
}

static void _panel_exit_sleep(const struct device *dev)
{
	struct lcd_panel_data *data = dev->data;

	_panel_transmit_cmd(dev, DDIC_CMD_SLPOUT << 8);
	k_msleep(120);

	data->in_sleep = 0;
}

static int _panel_init(const struct device *dev)
{
	const struct lcd_panel_config *config = lcd_panel_get_config(dev);

	/* Sleep Out */
	_panel_exit_sleep(dev);

	const uint8_t data_ff00[] = { 0x23, 0x08, 0x01 };
	_panel_transmit(dev, 0xFF00, data_ff00, sizeof(data_ff00));

	_panel_transmit_p2(dev, 0xFF80, 0x23, 0x08);
	_panel_transmit_p1(dev, 0xb283, 0x12);
	_panel_transmit_p2(dev, 0x5100, 0xff, 0x00);

	/* TE */
	_panel_transmit_p1(dev, DDIC_CMD_TEON << 8, 0x00);

	if (config->videomode.pixel_format == PIXEL_FORMAT_BGR_565) {
		_panel_transmit_p1(dev, 0x3A00, 0x55); /* rgb565 */
	} else {
		_panel_transmit_p1(dev, 0x3A00, 0x77); /* rgb888 */
	}

	k_msleep(120);

	/* Display on */
	//_panel_transmit_cmd(dev, DDIC_CMD_DISPON << 8);

	return 0;
}

static int _panel_set_brightness(const struct device *dev, uint8_t brightness)
{
	_panel_transmit_p2(dev, 0x5100, brightness, 0x00);
	return 0;
}

static int _panel_set_mem_area(const struct device *dev, uint16_t x,
				 uint16_t y, uint16_t w, uint16_t h)
{
	uint16_t cmd_data[2];

	x += CONFIG_PANEL_MEM_OFFSET_X;
	y += CONFIG_PANEL_MEM_OFFSET_Y;

	cmd_data[0] = sys_cpu_to_be16(x);
	cmd_data[1] = sys_cpu_to_be16(x + w - 1);
	_panel_transmit(dev, DDIC_CMD_CASET << 8, (uint8_t *)&cmd_data[0], 4);

	cmd_data[0] = sys_cpu_to_be16(y);
	cmd_data[1] = sys_cpu_to_be16(y + h - 1);
	_panel_transmit(dev, DDIC_CMD_PASET << 8, (uint8_t *)&cmd_data[0], 4);

	return 0;
}

static int _panel_blanking_on(const struct device *dev)
{
	_panel_transmit_cmd(dev, DDIC_CMD_DISPOFF << 8);
	_panel_transmit_cmd(dev, DDIC_CMD_SLPIN << 8);
	return 0;
}

static int _panel_blanking_off(const struct device *dev)
{
	struct lcd_panel_data *data = dev->data;

	if (data->in_sleep)
		_panel_exit_sleep(dev);

	_panel_transmit_cmd(dev, DDIC_CMD_DISPON << 8);
	k_msleep(120);

	return 0;
}

static int _panel_lowpower_enter(const struct device *dev)
{
	_panel_transmit(dev, DDIC_CMD_IDMON, NULL, 0);
	return 0;
}

static int _panel_lowpower_exit(const struct device *dev)
{
	_panel_transmit(dev, DDIC_CMD_IDMOFF, NULL, 0);
	return 0;
}

static const struct lcd_panel_ops lcd_panel_ops = {
	.init = _panel_init,
	.blanking_on = _panel_blanking_on,
	.blanking_off = _panel_blanking_off,
	.lowpower_enter = _panel_lowpower_enter,
	.lowpower_exit = _panel_lowpower_exit,
	.set_brightness = _panel_set_brightness,
	.write_prepare = _panel_set_mem_area,
};

const struct lcd_panel_config lcd_panel_ft2308_config = {
	.videoport = PANEL_VIDEO_PORT_INITIALIZER,
	.videomode = PANEL_VIDEO_MODE_INITIALIZER,
	.ops = &lcd_panel_ops,
	.cmd_ramwr = DDIC_QSPI_CMD_RAMWR(DDIC_CMD_RAMWR),
	.cmd_ramwc = DDIC_QSPI_CMD_RAMWR(DDIC_CMD_RAMWRCNT),
	.tw_reset = 120,
	.ts_reset = 120,
};