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feat(lcd): support i80 lcd sleep retention on p4

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This commit is contained in:
Chen Jichang
2026-03-18 17:35:04 +08:00
committed by Chen Ji Chang
parent d13bbd4b2b
commit c878e60cb5
16 changed files with 319 additions and 7 deletions
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components/esp_hal_lcd/esp32p4/lcd_periph.c
+38 -1
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@@ -1,11 +1,12 @@
/*
* SPDX-FileCopyrightText: 2022-2024 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2022-2026 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "hal/lcd_periph.h"
#include "soc/gpio_sig_map.h"
#include "soc/lcd_cam_reg.h"
const soc_lcd_i80_signal_desc_t soc_lcd_i80_signals[1] = {
[0] = {
@@ -80,3 +81,39 @@ const soc_lcd_rgb_signal_desc_t soc_lcd_rgb_signals[1] = {
.disp_sig = SIG_GPIO_OUT_IDX,
}
};
/**
* LCD_CAM Registers to be saved during sleep retention
* - LCD Clock Configuration registers: LCDCAM_LCD_CLOCK_REG (0x0)
* - LCD RGB/YUV Configuration registers: LCDCAM_LCD_RGB_YUV_REG (0x10)
* - LCD User Configuration registers: LCDCAM_LCD_USER_REG (0x14), LCDCAM_LCD_MISC_REG (0x18)
* - LCD Control registers: LCDCAM_LCD_CTRL_REG (0x1c), LCDCAM_LCD_CTRL1_REG (0x20), LCDCAM_LCD_CTRL2_REG (0x24)
* - LCD Command Value registers: LCDCAM_LCD_FIRST_CMD_VAL_REG (0x28), LCDCAM_LCD_LATTER_CMD_VAL_REG (0x2c)
* - LCD Delay Mode Configuration registers: LCDCAM_LCD_DLY_MODE_CFG1_REG (0x30), LCDCAM_LCD_DLY_MODE_CFG2_REG (0x38)
* - LCD DMA Interrupt Enable register: LCDCAM_LC_DMA_INT_ENA_REG (0x64)
*
* NOTE: Only I80 LCD supports sleep retention, not RGB LCD.
*/
#define LCD_RETENTION_REGS_CNT 12
#define LCD_RETENTION_REGS_BASE (DR_REG_LCDCAM_BASE + 0x0)
static const uint32_t lcd_cam_regs_map[4] = {0x2005ff1, 0x0, 0x0, 0x0};
static const regdma_entries_config_t lcd_regs_retention[] = {
// backup stage: save configuration registers
// restore stage: restore the configuration registers
[0] = {
.config = REGDMA_LINK_ADDR_MAP_INIT(REGDMA_LCDCAM_LINK(0x00),
LCD_RETENTION_REGS_BASE, LCD_RETENTION_REGS_BASE,
LCD_RETENTION_REGS_CNT, 0, 0,
lcd_cam_regs_map[0], lcd_cam_regs_map[1],
lcd_cam_regs_map[2], lcd_cam_regs_map[3]),
.owner = ENTRY(0),
},
};
const soc_i80_lcd_retention_info_t soc_i80_lcd_retention_info[1] = {
[0] = {
.regdma_entry_array = lcd_regs_retention,
.array_size = ARRAY_SIZE(lcd_regs_retention),
.retention_module = SLEEP_RETENTION_MODULE_LCDCAM
},
};