esp-idf/components/esp_lcd/dsi/include/esp_lcd_mipi_dsi.h

/*
 * SPDX-FileCopyrightText: 2023-2024 Espressif Systems (Shanghai) CO LTD
 *
 * SPDX-License-Identifier: Apache-2.0
 */
#pragma once

#include <stdint.h>
#include <stdbool.h>
#include "esp_err.h"
#include "esp_lcd_types.h"

typedef struct esp_lcd_dsi_bus_t *esp_lcd_dsi_bus_handle_t;   /*!< Type of MIPI DSI bus handle */

#ifdef __cplusplus
extern "C" {
#endif

/**
 * @brief MIPI DSI bus configuration structure
 */
typedef struct {
    int bus_id;                              /*!< Select which DSI controller, index from 0 */
    uint8_t num_data_lanes;                  /*!< Number of data lanes */
    mipi_dsi_phy_clock_source_t phy_clk_src; /*!< MIPI DSI PHY clock source */
    uint32_t lane_bit_rate_mbps;             /*!< Lane bit rate in Mbps */
} esp_lcd_dsi_bus_config_t;

/**
 * @brief Create MIPI DSI bus handle
 *
 * @param[in] bus_config Bus configuration
 * @param[out] ret_bus Returned bus handle
 * @return
 *      - ESP_OK: Create MIPI DSI bus successfully
 *      - ESP_ERR_INVALID_ARG: Create MIPI DSI bus failed because of invalid argument
 *      - ESP_ERR_NO_MEM: Create MIPI DSI bus failed because of out of memory
 *      - ESP_ERR_NOT_FOUND: Create MIPI DSI bus failed because no more free DSI hardware instance
 *      - ESP_FAIL: Create MIPI DSI bus failed because of other error
 */
esp_err_t esp_lcd_new_dsi_bus(const esp_lcd_dsi_bus_config_t *bus_config, esp_lcd_dsi_bus_handle_t *ret_bus);

/**
 * @brief Destroy MIPI DSI bus handle
 *
 * @param[in] bus MIPI DSI bus handle, returned from `esp_lcd_new_dsi_bus`
 * @return
 *      - ESP_OK: Destroy MIPI DSI bus successfully
 *      - ESP_ERR_INVALID_ARG: Destroy MIPI DSI bus failed because of invalid argument
 *      - ESP_FAIL: Destroy MIPI DSI bus failed because of other error
 */
esp_err_t esp_lcd_del_dsi_bus(esp_lcd_dsi_bus_handle_t bus);

/**
 * @brief Panel IO configuration structure, for MIPI DSI command interface
 */
typedef struct {
    uint8_t virtual_channel;  /*!< Virtual channel ID, index from 0 */
    int lcd_cmd_bits;         /*!< Bit-width of LCD command */
    int lcd_param_bits;       /*!< Bit-width of LCD parameter */
} esp_lcd_dbi_io_config_t;

/**
 * @brief Create LCD panel IO, for MIPI DSI DBI interface
 *
 * @note Although we call it "DBI", internally the driver is using a co-called "generic" interface for transmitting/receiving LCD commands and parameters.
 *
 * @param[in] bus MIPI DSI bus handle, returned from `esp_lcd_new_dsi_bus`
 * @param[in] io_config IO configuration
 * @param[out] ret_io Returned panel IO handle
 * @return
 *      - ESP_OK: Create MIPI DSI command IO successfully
 *      - ESP_ERR_INVALID_ARG: Create MIPI DSI command IO failed because of invalid argument
 *      - ESP_ERR_NO_MEM: Create MIPI DSI command IO failed because of out of memory
 *      - ESP_FAIL: Create MIPI DSI command IO failed because of other error
 */
esp_err_t esp_lcd_new_panel_io_dbi(esp_lcd_dsi_bus_handle_t bus, const esp_lcd_dbi_io_config_t *io_config, esp_lcd_panel_io_handle_t *ret_io);

/**
 * @brief MIPI DSI DPI panel configuration structure
 */
typedef struct {
    uint8_t virtual_channel;                   /*!< Virtual channel ID, index from 0 */
    mipi_dsi_dpi_clock_source_t dpi_clk_src;   /*!< MIPI DSI DPI clock source */
    uint32_t dpi_clock_freq_mhz;               /*!< DPI clock frequency in MHz */
    lcd_color_rgb_pixel_format_t pixel_format; /*!< Pixel format that used by the MIPI LCD device */
    esp_lcd_video_timing_t video_timing;       /*!< Video timing */
    /// Extra configuration flags for MIPI DSI DPI panel
    struct extra_flags {
        uint32_t use_dma2d: 1; /*!< Use DMA2D to copy user buffer to the frame buffer when necessary */
    } flags;                   /*!< Extra configuration flags */
} esp_lcd_dpi_panel_config_t;

/**
 * @brief Create LCD panel for MIPI DSI DPI interface
 *
 * @param[in] bus MIPI DSI bus handle, returned from `esp_lcd_new_dsi_bus`
 * @param[in] panel_config DSI data panel configuration
 * @param[out] ret_panel Returned LCD panel handle
 * @return
 *      - ESP_OK: Create MIPI DSI data panel successfully
 *      - ESP_ERR_INVALID_ARG: Create MIPI DSI data panel failed because of invalid argument
 *      - ESP_ERR_NO_MEM: Create MIPI DSI data panel failed because of out of memory
 *      - ESP_ERR_NOT_SUPPORTED: Create MIPI DSI data panel failed because of unsupported feature
 *      - ESP_FAIL: Create MIPI DSI data panel failed because of other error
 */
esp_err_t esp_lcd_new_panel_dpi(esp_lcd_dsi_bus_handle_t bus, const esp_lcd_dpi_panel_config_t *panel_config, esp_lcd_panel_handle_t *ret_panel);

/**
 * @brief Set pre-defined pattern to the screen for testing or debugging purpose
 *
 * @param[in] dpi_panel MIPI DPI panel handle, returned from esp_lcd_new_panel_dpi()
 * @param[in] pattern Pattern type
 * @return
 *      - ESP_OK: Set pattern successfully
 *      - ESP_ERR_INVALID_ARG: Set pattern failed because of invalid argument
 *      - ESP_FAIL: Set pattern failed because of other error
 */
esp_err_t esp_lcd_dpi_panel_set_pattern(esp_lcd_panel_handle_t dpi_panel, mipi_dsi_pattern_type_t pattern);

/**
 * @brief Type of LCD DPI panel event data
 */
typedef struct {
} esp_lcd_dpi_panel_event_data_t;

/**
 * @brief Declare the prototype of the function that will be invoked when DPI panel finishes transferring color data
 *
 * @param[in] panel LCD panel handle, which is created by factory API like esp_lcd_new_panel_dpi()
 * @param[in] edata DPI panel event data, fed by driver
 * @param[in] user_ctx User data
 * @return Whether a high priority task has been waken up by this function
 */
typedef bool (*esp_lcd_dpi_panel_color_trans_done_cb_t)(esp_lcd_panel_handle_t panel, esp_lcd_dpi_panel_event_data_t *edata, void *user_ctx);

/**
 * @brief Type of LCD DPI panel callbacks
 */
typedef struct {
    esp_lcd_dpi_panel_color_trans_done_cb_t on_color_trans_done; /*!< Callback invoked when color data transfer has finished */
} esp_lcd_dpi_panel_event_callbacks_t;

/**
 * @brief Register LCD DPI panel callbacks
 *
 * @param[in] dpi_panel LCD DPI panel handle, which is returned from esp_lcd_new_panel_dpi()
 * @param[in] cbs structure with all LCD panel callbacks
 * @param[in] user_ctx User private data, passed directly to callback's user_ctx
 * @return
 *      - ESP_ERR_INVALID_ARG: Register callbacks failed because of invalid argument
 *      - ESP_OK: Register callbacks successfully
 */
esp_err_t esp_lcd_dpi_panel_register_event_callbacks(esp_lcd_panel_handle_t dpi_panel, const esp_lcd_dpi_panel_event_callbacks_t *cbs, void *user_ctx);

#ifdef __cplusplus
}
#endif