feat(lcd): support parlio lcd interface

components/esp_lcd/include/esp_lcd_io_parl.h

@@ -0,0 +1,75 @@
+/*
+ * SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#pragma once
+
+#include <stdbool.h>
+#include "esp_err.h"
+#include "esp_lcd_types.h"
+#include "soc/soc_caps.h"
+#include "driver/parlio_types.h"
+
+#define ESP_PARLIO_LCD_WIDTH_MAX 8 /*!< Maximum data width of parlio lcd interface */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if SOC_PARLIO_SUPPORTED
+/**
+ * @brief Parallel Panel IO configuration structure, for intel 8080 interface(8 data-lines) or SPI interface(1 data-lines)
+ */
+typedef struct {
+    int dc_gpio_num; /*!< GPIO used for D/C line */
+    int clk_gpio_num; /*!< GPIO used for CLK line */
+    int cs_gpio_num;         /*!< GPIO used for CS line */
+    int data_gpio_nums[ESP_PARLIO_LCD_WIDTH_MAX]; /*!< GPIOs used for data lines */
+    size_t data_width;          /*!< Number of data lines, 1(SPI) or 8(I80) */
+    uint32_t pclk_hz;        /*!< Frequency of pixel clock */
+    parlio_clock_source_t clk_src; /*!< Clock source for the Parlio peripheral */
+    size_t max_transfer_bytes; /*!< Maximum transfer size, this determines the length of internal DMA link */
+    size_t dma_burst_size;     /*!< DMA burst size, in bytes */
+    size_t trans_queue_depth; /*!< Transaction queue size, larger queue, higher throughput */
+    int lcd_cmd_bits;   /*!< Bit-width of LCD command */
+    int lcd_param_bits; /*!< Bit-width of LCD parameter */
+    struct {
+        unsigned int dc_cmd_level: 1;   /*!< Level of DC line in CMD phase */
+        unsigned int dc_data_level: 1;  /*!< Level of DC line in DATA phase */
+    } dc_levels; /*!< Each LCD device might have its own D/C control logic */
+    struct {
+        unsigned int cs_active_high: 1;     /*!< If set, a high level of CS line will select the device, otherwise, CS line is low level active */
+    } flags;                                /*!< Panel IO config flags */
+} esp_lcd_panel_io_parl_config_t;
+
+/**
+ * @brief Create LCD panel IO, for parlio interface
+ *
+ * @param[in] io_config IO configuration, for parlio interface
+ * @param[out] ret_io Returned panel IO handle
+ * @return
+ *          - ESP_ERR_INVALID_ARG   if parameter is invalid
+ *          - ESP_ERR_NOT_SUPPORTED if some configuration can't be satisfied, e.g. pixel clock out of the range
+ *          - ESP_ERR_NO_MEM        if out of memory
+ *          - ESP_OK                on success
+ */
+esp_err_t esp_lcd_new_panel_io_parl(const esp_lcd_panel_io_parl_config_t *io_config, esp_lcd_panel_io_handle_t *ret_io);
+
+/**
+ * @brief Allocate a draw buffer that can be used by parlio interface LCD panel
+ *
+ * @note This function differs from the normal 'heap_caps_*' functions in that it can also automatically handle the alignment required by DMA burst, cache line size, etc.
+ *
+ * @param[in] io Panel IO handle, created by `esp_lcd_new_panel_io_parl()`
+ * @param[in] size Size of memory to be allocated
+ * @param[in] caps Bitwise OR of MALLOC_CAP_* flags indicating the type of memory desired for the allocation
+ * @return Pointer to a new buffer of size 'size' with capabilities 'caps', or NULL if allocation failed
+ */
+void *esp_lcd_parlio_alloc_draw_buffer(esp_lcd_panel_io_handle_t io, size_t size, uint32_t caps);
+
+#endif // SOC_PARLIO_SUPPORTED
+
+#ifdef __cplusplus
+}
+#endif