/*
 * SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include "soc/soc_caps.h"

#if SOC_MIPI_DSI_SUPPORTED
#include "esp_check.h"
#include "esp_log.h"
#include "esp_lcd_panel_commands.h"
#include "esp_lcd_panel_interface.h"
#include "esp_lcd_panel_io.h"
#include "esp_lcd_mipi_dsi.h"
#include "esp_lcd_panel_vendor.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "driver/gpio.h"
#include "esp_lcd_co6300.h"
#include "esp_lcd_co6300_interface.h"

typedef struct {
    esp_lcd_panel_io_handle_t io;
    int reset_gpio_num;
    uint8_t madctl_val; // save current value of LCD_CMD_MADCTL register
    uint8_t colmod_val; // save surrent value of LCD_CMD_COLMOD register
    const co6300_lcd_init_cmd_t *init_cmds;
    uint16_t init_cmds_size;
    struct {
        unsigned int reset_level: 1;
    } flags;
    // To save the original functions of MIPI DPI panel
    esp_err_t (*del)(esp_lcd_panel_t *panel);
    esp_err_t (*init)(esp_lcd_panel_t *panel);
} co6300_panel_t;

static const char *TAG = "co6300_mipi";

static esp_err_t panel_co6300_del(esp_lcd_panel_t *panel);
static esp_err_t panel_co6300_init(esp_lcd_panel_t *panel);
static esp_err_t panel_co6300_reset(esp_lcd_panel_t *panel);

esp_err_t esp_lcd_new_panel_co6300_mipi(const esp_lcd_panel_io_handle_t io, const esp_lcd_panel_dev_config_t *panel_dev_config,
                                        esp_lcd_panel_handle_t *ret_panel)
{
    ESP_RETURN_ON_FALSE(io && panel_dev_config && ret_panel, ESP_ERR_INVALID_ARG, TAG, "invalid arguments");
    co6300_vendor_config_t *vendor_config = (co6300_vendor_config_t *)panel_dev_config->vendor_config;
    ESP_RETURN_ON_FALSE(vendor_config && vendor_config->mipi_config.dpi_config && vendor_config->mipi_config.dsi_bus, ESP_ERR_INVALID_ARG, TAG,
                        "invalid vendor config");

    esp_err_t ret = ESP_OK;
    co6300_panel_t *co6300 = (co6300_panel_t *)calloc(1, sizeof(co6300_panel_t));
    ESP_RETURN_ON_FALSE(co6300, ESP_ERR_NO_MEM, TAG, "no mem for co6300 panel");

    if (panel_dev_config->reset_gpio_num >= 0) {
        gpio_config_t io_conf = {
            .mode = GPIO_MODE_OUTPUT,
            .pin_bit_mask = 1ULL << panel_dev_config->reset_gpio_num,
        };
        ESP_GOTO_ON_ERROR(gpio_config(&io_conf), err, TAG, "configure GPIO for RST line failed");
    }

    switch (panel_dev_config->color_space) {
    case LCD_RGB_ELEMENT_ORDER_RGB:
        co6300->madctl_val = 0;
        break;
    case LCD_RGB_ELEMENT_ORDER_BGR:
        co6300->madctl_val |= LCD_CMD_BGR_BIT;
        break;
    default:
        ESP_GOTO_ON_FALSE(false, ESP_ERR_NOT_SUPPORTED, err, TAG, "unsupported color space");
        break;
    }

    switch (panel_dev_config->bits_per_pixel) {
    case 16: // RGB565
        co6300->colmod_val = 0x55;
        break;
    case 18: // RGB666
        co6300->colmod_val = 0x66;
        break;
    case 24: // RGB888
        co6300->colmod_val = 0x77;

        if (vendor_config->mipi_config.dpi_config->video_timing.h_size * vendor_config->mipi_config.dpi_config->video_timing.v_size % 8 != 0) {
            ESP_GOTO_ON_FALSE(false, ESP_ERR_NOT_SUPPORTED, err, TAG, "unsupported resolution");
        }

        break;
    default:
        ESP_GOTO_ON_FALSE(false, ESP_ERR_NOT_SUPPORTED, err, TAG, "unsupported pixel width");
        break;
    }

    co6300->io = io;
    co6300->init_cmds = vendor_config->init_cmds;
    co6300->init_cmds_size = vendor_config->init_cmds_size;
    co6300->reset_gpio_num = panel_dev_config->reset_gpio_num;
    co6300->flags.reset_level = panel_dev_config->flags.reset_active_high;

    // Create MIPI DPI panel
    esp_lcd_panel_handle_t panel_handle = NULL;
    ESP_GOTO_ON_ERROR(esp_lcd_new_panel_dpi(vendor_config->mipi_config.dsi_bus, vendor_config->mipi_config.dpi_config, &panel_handle), err, TAG,
                      "create MIPI DPI panel failed");
    ESP_LOGD(TAG, "new MIPI DPI panel @%p", panel_handle);

    // Save the original functions of MIPI DPI panel
    co6300->del = panel_handle->del;
    co6300->init = panel_handle->init;
    // Overwrite the functions of MIPI DPI panel
    panel_handle->del = panel_co6300_del;
    panel_handle->init = panel_co6300_init;
    panel_handle->reset = panel_co6300_reset;
    panel_handle->user_data = co6300;
    *ret_panel = panel_handle;
    ESP_LOGD(TAG, "new co6300 panel @%p", co6300);

    return ESP_OK;

err:
    if (co6300) {
        if (panel_dev_config->reset_gpio_num >= 0) {
            gpio_reset_pin(panel_dev_config->reset_gpio_num);
        }
        free(co6300);
    }
    return ret;
}

static const co6300_lcd_init_cmd_t vendor_specific_init_code_default[] = {
    //  {cmd, { data }, data_size, delay_ms}
    {0xFE, (uint8_t[]){0x00}, 1, 0},
    {0x11, (uint8_t []){0x00}, 0, 120},// 退出睡眠模式
    {0x35, (uint8_t[]){0x00}, 1, 0},

    {0x2A, (uint8_t[]){0x00, 0x00, 0x01, 0x05}, 4, 0},
    {0x2B, (uint8_t[]){0x00, 0x00, 0x03, 0x9F}, 4, 0},
    //{0x31, (uint8_t[]){0x00, 0x01, 0x01, 0x04}, 4, 0},
    //{0x30, (uint8_t[]){0x00, 0x01, 0x03, 0x9E}, 4, 0},
    {0x51, (uint8_t[]){0xFF}, 1, 0},
    {0x11, NULL, 0, 120},
    {0x63, (uint8_t []){0xFF}, 1, 0},// 设置 HBM 模式下的亮度值
    {0x29, (uint8_t []){0x00}, 0, 60},// 打开显示器
    {0x51, (uint8_t []){0xFF}, 1, 0},// 设置正常模式下的亮度值
    {0x58, (uint8_t []){0x07}, 1, 10},// 设置正常模式下的亮度值
};

static esp_err_t panel_co6300_del(esp_lcd_panel_t *panel)
{
    co6300_panel_t *co6300 = (co6300_panel_t *)panel->user_data;

    if (co6300->reset_gpio_num >= 0) {
        gpio_reset_pin(co6300->reset_gpio_num);
    }
    // Delete MIPI DPI panel
    co6300->del(panel);
    ESP_LOGD(TAG, "del co6300 panel @%p", co6300);
    free(co6300);

    return ESP_OK;
}

static esp_err_t panel_co6300_init(esp_lcd_panel_t *panel)
{
    co6300_panel_t *co6300 = (co6300_panel_t *)panel->user_data;
    esp_lcd_panel_io_handle_t io = co6300->io;
    const co6300_lcd_init_cmd_t *init_cmds = NULL;
    uint16_t init_cmds_size = 0;
    bool is_cmd_overwritten = false;

    uint8_t ID[3];
    ESP_RETURN_ON_ERROR(esp_lcd_panel_io_rx_param(io, 0x04, ID, 3), TAG, "read ID failed");
    ESP_LOGI(TAG, "LCD ID: %02X %02X %02X", ID[0], ID[1], ID[2]);

    ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, LCD_CMD_MADCTL, (uint8_t[]) {
        co6300->madctl_val,
    }, 1), TAG, "send command failed");
    ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, LCD_CMD_COLMOD, (uint8_t[]) {
        co6300->colmod_val,
    }, 1), TAG, "send command failed");

    // vendor specific initialization, it can be different between manufacturers
    // should consult the LCD supplier for initialization sequence code
    if (co6300->init_cmds) {
        init_cmds = co6300->init_cmds;
        init_cmds_size = co6300->init_cmds_size;
    } else {
        init_cmds = vendor_specific_init_code_default;
        init_cmds_size = sizeof(vendor_specific_init_code_default) / sizeof(co6300_lcd_init_cmd_t);
    }

    for (int i = 0; i < init_cmds_size; i++) {
        // Check if the command has been used or conflicts with the internal
        if (init_cmds[i].data_bytes > 0) {
            switch (init_cmds[i].cmd) {
            case LCD_CMD_MADCTL:
                is_cmd_overwritten = true;
                co6300->madctl_val = ((uint8_t *)init_cmds[i].data)[0];
                break;
            case LCD_CMD_COLMOD:
                is_cmd_overwritten = true;
                co6300->colmod_val = ((uint8_t *)init_cmds[i].data)[0];
                break;
            default:
                is_cmd_overwritten = false;
                break;
            }

            if (is_cmd_overwritten) {
                is_cmd_overwritten = false;
                ESP_LOGW(TAG, "The %02Xh command has been used and will be overwritten by external initialization sequence",
                         init_cmds[i].cmd);
            }
        }

        // Send command
        ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, init_cmds[i].cmd, init_cmds[i].data, init_cmds[i].data_bytes), TAG, "send command failed");
        vTaskDelay(pdMS_TO_TICKS(init_cmds[i].delay_ms));
    }

    ESP_LOGD(TAG, "send init commands success");

    ESP_RETURN_ON_ERROR(co6300->init(panel), TAG, "init MIPI DPI panel failed");

    return ESP_OK;
}

static esp_err_t panel_co6300_reset(esp_lcd_panel_t *panel)
{
    co6300_panel_t *co6300 = (co6300_panel_t *)panel->user_data;
    esp_lcd_panel_io_handle_t io = co6300->io;

    // Perform hardware reset
    if (co6300->reset_gpio_num >= 0) {
        gpio_set_level(co6300->reset_gpio_num, !co6300->flags.reset_level);
        vTaskDelay(pdMS_TO_TICKS(5));
        gpio_set_level(co6300->reset_gpio_num, co6300->flags.reset_level);
        vTaskDelay(pdMS_TO_TICKS(10));
        gpio_set_level(co6300->reset_gpio_num, !co6300->flags.reset_level);
        vTaskDelay(pdMS_TO_TICKS(120));
    } else if (io) { // Perform software reset
        ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, LCD_CMD_SWRESET, NULL, 0), TAG, "send command failed");
        vTaskDelay(pdMS_TO_TICKS(120));
    }

    return ESP_OK;
}
#endif
