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/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2019-05-23 WillianChan first version
*/
#include <board.h>
#ifdef BSP_USING_LCD_MIPI
#include <lcd_port.h>
#include <string.h>
DSI_HandleTypeDef hdsi;
DSI_VidCfgTypeDef hdsi_video;
LTDC_HandleTypeDef hltdc;
struct stm32_lcd
{
struct rt_device parent;
struct rt_device_graphic_info info;
};
struct stm32_lcd lcd;
extern void stm32_mipi_lcd_init(void);
extern void stm32_mipi_lcd_config(rt_uint32_t pixel_format);
extern void stm32_mipi_display_on(void);
extern void stm32_mipi_display_off(void);
rt_err_t ltdc_init(void)
{
uint32_t lcd_clock = 27429;
uint32_t lanebyte_clock = 62500;
uint32_t HSA = LCD_HSYNC, HFP = LCD_HFP, HBP = LCD_HBP, HACT = LCD_WIDTH;
uint32_t VSA = LCD_VSYNC, VFP = LCD_VFP, VBP = LCD_VBP, VACT = LCD_HEIGHT;
stm32_mipi_lcd_init();
__HAL_RCC_LTDC_CLK_ENABLE();
__HAL_RCC_LTDC_FORCE_RESET();
__HAL_RCC_LTDC_RELEASE_RESET();
__HAL_RCC_DSI_CLK_ENABLE();
__HAL_RCC_DSI_FORCE_RESET();
__HAL_RCC_DSI_RELEASE_RESET();
RCC_PeriphCLKInitTypeDef PeriphClkInitStruct;
PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_LTDC;
PeriphClkInitStruct.PLLSAI.PLLSAIN = 384;
PeriphClkInitStruct.PLLSAI.PLLSAIR = 7;
PeriphClkInitStruct.PLLSAIDivR = RCC_PLLSAIDIVR_2;
HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct);
HAL_NVIC_SetPriority(LTDC_IRQn, 3, 0);
HAL_NVIC_SetPriority(DSI_IRQn, 3, 0);
HAL_NVIC_EnableIRQ(LTDC_IRQn);
HAL_NVIC_EnableIRQ(DSI_IRQn);
DSI_PLLInitTypeDef dsi_pll;
hdsi.Instance = DSI;
hdsi.Init.NumberOfLanes = DSI_TWO_DATA_LANES;
hdsi.Init.TXEscapeCkdiv = lanebyte_clock / 15620;
dsi_pll.PLLNDIV = 125;
dsi_pll.PLLIDF = DSI_PLL_IN_DIV2;
dsi_pll.PLLODF = DSI_PLL_OUT_DIV1;
HAL_DSI_DeInit(&hdsi);
HAL_DSI_Init(&hdsi, &dsi_pll);
hdsi_video.VirtualChannelID = 0;
hdsi_video.ColorCoding = DSI_RGB565;
hdsi_video.VSPolarity = DSI_VSYNC_ACTIVE_HIGH;
hdsi_video.HSPolarity = DSI_HSYNC_ACTIVE_HIGH;
hdsi_video.DEPolarity = DSI_DATA_ENABLE_ACTIVE_HIGH;
hdsi_video.Mode = DSI_VID_MODE_BURST;
hdsi_video.NullPacketSize = 0xFFF;
hdsi_video.NumberOfChunks = 0;
hdsi_video.PacketSize = HACT;
hdsi_video.HorizontalSyncActive = (HSA * lanebyte_clock) / lcd_clock;
hdsi_video.HorizontalBackPorch = (HBP * lanebyte_clock) / lcd_clock;
hdsi_video.HorizontalLine = ((HACT + HSA + HBP + HFP) * lanebyte_clock) / lcd_clock;
hdsi_video.VerticalSyncActive = VSA;
hdsi_video.VerticalBackPorch = VBP;
hdsi_video.VerticalFrontPorch = VFP;
hdsi_video.VerticalActive = VACT;
hdsi_video.LPCommandEnable = DSI_LP_COMMAND_ENABLE;
hdsi_video.LPLargestPacketSize = 16;
hdsi_video.LPVACTLargestPacketSize = 0;
hdsi_video.LPHorizontalFrontPorchEnable = DSI_LP_HFP_ENABLE;
hdsi_video.LPHorizontalBackPorchEnable = DSI_LP_HBP_ENABLE;
hdsi_video.LPVerticalActiveEnable = DSI_LP_VACT_ENABLE;
hdsi_video.LPVerticalFrontPorchEnable = DSI_LP_VFP_ENABLE;
hdsi_video.LPVerticalBackPorchEnable = DSI_LP_VBP_ENABLE;
hdsi_video.LPVerticalSyncActiveEnable = DSI_LP_VSYNC_ENABLE;
HAL_DSI_ConfigVideoMode(&hdsi, &hdsi_video);
DSI_PHY_TimerTypeDef dsi_phy;
dsi_phy.ClockLaneHS2LPTime = 35;
dsi_phy.ClockLaneLP2HSTime = 35;
dsi_phy.DataLaneHS2LPTime = 35;
dsi_phy.DataLaneLP2HSTime = 35;
dsi_phy.DataLaneMaxReadTime = 0;
dsi_phy.StopWaitTime = 10;
HAL_DSI_ConfigPhyTimer(&hdsi, &dsi_phy);
hltdc.Instance = LTDC;
hltdc.Init.PCPolarity = LTDC_PCPOLARITY_IPC;
hltdc.Init.HorizontalSync = (HSA - 1);
hltdc.Init.AccumulatedHBP = (HSA + HBP - 1);
hltdc.Init.AccumulatedActiveW = (LCD_WIDTH + HSA + HBP - 1);
hltdc.Init.TotalWidth = (LCD_WIDTH + HSA + HBP + HFP - 1);
hltdc.LayerCfg->ImageWidth = LCD_WIDTH;
hltdc.LayerCfg->ImageHeight = LCD_HEIGHT;
hltdc.Init.Backcolor.Blue = 0x00;
hltdc.Init.Backcolor.Green = 0x00;
hltdc.Init.Backcolor.Red = 0x00;
HAL_LTDCEx_StructInitFromVideoConfig(&hltdc, &(hdsi_video));
HAL_LTDC_Init(&(hltdc));
HAL_DSI_Start(&(hdsi));
stm32_mipi_lcd_config(RTGRAPHIC_PIXEL_FORMAT_RGB565);
return RT_EOK;
}
void ltdc_layer_init(uint16_t index, uint32_t framebuffer)
{
LTDC_LayerCfgTypeDef layer_cfg;
layer_cfg.WindowX0 = 0;
layer_cfg.WindowX1 = LCD_WIDTH;
layer_cfg.WindowY0 = 0;
layer_cfg.WindowY1 = LCD_HEIGHT;
layer_cfg.PixelFormat = LTDC_PIXEL_FORMAT_RGB565;
layer_cfg.BlendingFactor1 = LTDC_BLENDING_FACTOR1_PAxCA;
layer_cfg.BlendingFactor2 = LTDC_BLENDING_FACTOR2_PAxCA;
layer_cfg.Alpha = 255;
layer_cfg.Alpha0 = 0;
layer_cfg.ImageWidth = LCD_WIDTH;
layer_cfg.ImageHeight = LCD_HEIGHT;
layer_cfg.Backcolor.Blue = 0;
layer_cfg.Backcolor.Green = 0;
layer_cfg.Backcolor.Red = 0;
layer_cfg.FBStartAdress = framebuffer;
HAL_LTDC_ConfigLayer(&hltdc, &layer_cfg, index);
}
void LTDC_IRQHandler(void)
{
rt_interrupt_enter();
HAL_LTDC_IRQHandler(&hltdc);
rt_interrupt_leave();
}
static rt_err_t stm32_lcd_init(rt_device_t device)
{
lcd.info.width = LCD_WIDTH;
lcd.info.height = LCD_HEIGHT;
lcd.info.pixel_format = RTGRAPHIC_PIXEL_FORMAT_RGB565;
lcd.info.bits_per_pixel = 16;
lcd.info.framebuffer = (void *)rt_malloc_align(LCD_WIDTH * LCD_HEIGHT * (lcd.info.bits_per_pixel / 8), 32);;
memset(lcd.info.framebuffer, 0, LCD_WIDTH * LCD_HEIGHT * (lcd.info.bits_per_pixel / 8));
ltdc_init();
ltdc_layer_init(0, (uint32_t)lcd.info.framebuffer);
return RT_EOK;
}
static rt_err_t stm32_lcd_control(rt_device_t device, int cmd, void *args)
{
switch(cmd)
{
case RTGRAPHIC_CTRL_RECT_UPDATE:
break;
case RTGRAPHIC_CTRL_POWERON:
stm32_mipi_display_on();
break;
case RTGRAPHIC_CTRL_POWEROFF:
stm32_mipi_display_off();
break;
case RTGRAPHIC_CTRL_GET_INFO:
rt_memcpy(args, &lcd.info, sizeof(lcd.info));
break;
case RTGRAPHIC_CTRL_SET_MODE:
break;
case RTGRAPHIC_CTRL_GET_EXT:
break;
}
return RT_EOK;
}
int rt_hw_lcd_init(void)
{
rt_err_t ret;
rt_memset(&lcd, 0x00, sizeof(lcd));
lcd.parent.type = RT_Device_Class_Graphic;
lcd.parent.init = stm32_lcd_init;
lcd.parent.open = RT_NULL;
lcd.parent.close = RT_NULL;
lcd.parent.read = RT_NULL;
lcd.parent.write = RT_NULL;
lcd.parent.control = stm32_lcd_control;
lcd.parent.user_data = (void *)&lcd.info;
ret = rt_device_register(&lcd.parent, "lcd", RT_DEVICE_FLAG_RDWR);
return ret;
}
INIT_DEVICE_EXPORT(rt_hw_lcd_init);
rt_weak void stm32_mipi_lcd_init(void)
{
rt_kprintf("please Implementation function %s\n", __func__);
}
rt_weak void stm32_mipi_lcd_config(rt_uint32_t pixel_format)
{
rt_kprintf("please Implementation function %s\n", __func__);
}
rt_weak void stm32_mipi_display_on(void)
{
rt_kprintf("please Implementation function %s\n", __func__);
}
rt_weak void stm32_mipi_display_off(void)
{
rt_kprintf("please Implementation function %s\n", __func__);
}
#endif /* BSP_USING_LCD_MIPI */
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