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lvgl_cpp/lvgl/draw/stm32_dma2d/lv_gpu_stm32_dma2d.c

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/**
* @file lv_gpu_stm32_dma2d.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_gpu_stm32_dma2d.h"
#include "../../core/lv_refr.h"
#if LV_USE_GPU_STM32_DMA2D
#include LV_GPU_DMA2D_CMSIS_INCLUDE
/*********************
* DEFINES
*********************/
#if LV_COLOR_16_SWAP
// TODO: F7 has red blue swap bit in control register for all layers and output
#error "Can't use DMA2D with LV_COLOR_16_SWAP 1"
#endif
#if LV_COLOR_DEPTH == 8
#error "Can't use DMA2D with LV_COLOR_DEPTH == 8"
#endif
#if LV_COLOR_DEPTH == 16
#define LV_DMA2D_COLOR_FORMAT LV_DMA2D_RGB565
#elif LV_COLOR_DEPTH == 32
#define LV_DMA2D_COLOR_FORMAT LV_DMA2D_ARGB8888
#else
/*Can't use GPU with other formats*/
#endif
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static void lv_draw_stm32_dma2d_blend_fill(lv_color_t * dest_buf, lv_coord_t dest_stride, const lv_area_t * fill_area,
lv_color_t color);
static void lv_draw_stm32_dma2d_blend_map(lv_color_t * dest_buf, const lv_area_t * dest_area, lv_coord_t dest_stride,
const lv_color_t * src_buf, lv_coord_t src_stride, lv_opa_t opa);
static void lv_draw_stm32_dma2d_img_decoded(lv_draw_ctx_t * draw, const lv_draw_img_dsc_t * dsc,
const lv_area_t * coords, const uint8_t * map_p, lv_img_cf_t color_format);
static void invalidate_cache(void);
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Turn on the peripheral and set output color mode, this only needs to be done once
*/
void lv_draw_stm32_dma2d_init(void)
{
/*Enable DMA2D clock*/
#if defined(STM32F4) || defined(STM32F7)
RCC->AHB1ENR |= RCC_AHB1ENR_DMA2DEN;
#elif defined(STM32H7)
RCC->AHB3ENR |= RCC_AHB3ENR_DMA2DEN;
#else
# warning "LVGL can't enable the clock of DMA2D"
#endif
/*Wait for hardware access to complete*/
__asm volatile("DSB\n");
/*Delay after setting peripheral clock*/
volatile uint32_t temp = RCC->AHB1ENR;
LV_UNUSED(temp);
/*set output colour mode*/
DMA2D->OPFCCR = LV_DMA2D_COLOR_FORMAT;
}
void lv_draw_stm32_dma2d_ctx_init(lv_disp_drv_t * drv, lv_draw_ctx_t * draw_ctx)
{
lv_draw_sw_init_ctx(drv, draw_ctx);
lv_draw_stm32_dma2d_ctx_t * dma2d_draw_ctx = (lv_draw_sw_ctx_t *)draw_ctx;
dma2d_draw_ctx->blend = lv_draw_stm32_dma2d_blend;
// dma2d_draw_ctx->base_draw.draw_img_decoded = lv_draw_stm32_dma2d_img_decoded;
dma2d_draw_ctx->base_draw.wait_for_finish = lv_gpu_stm32_dma2d_wait_cb;
dma2d_draw_ctx->base_draw.buffer_copy = lv_draw_stm32_dma2d_buffer_copy;
}
void lv_draw_stm32_dma2d_ctx_deinit(lv_disp_drv_t * drv, lv_draw_ctx_t * draw_ctx)
{
LV_UNUSED(drv);
LV_UNUSED(draw_ctx);
}
void lv_draw_stm32_dma2d_blend(lv_draw_ctx_t * draw_ctx, const lv_draw_sw_blend_dsc_t * dsc)
{
lv_area_t blend_area;
if(!_lv_area_intersect(&blend_area, dsc->blend_area, draw_ctx->clip_area)) return;
bool done = false;
if(dsc->mask_buf == NULL && dsc->blend_mode == LV_BLEND_MODE_NORMAL && lv_area_get_size(&blend_area) > 100) {
lv_coord_t dest_stride = lv_area_get_width(draw_ctx->buf_area);
lv_color_t * dest_buf = draw_ctx->buf;
dest_buf += dest_stride * (blend_area.y1 - draw_ctx->buf_area->y1) + (blend_area.x1 - draw_ctx->buf_area->x1);
const lv_color_t * src_buf = dsc->src_buf;
if(src_buf) {
lv_draw_sw_blend_basic(draw_ctx, dsc);
lv_coord_t src_stride;
src_stride = lv_area_get_width(dsc->blend_area);
src_buf += src_stride * (blend_area.y1 - dsc->blend_area->y1) + (blend_area.x1 - dsc->blend_area->x1);
lv_area_move(&blend_area, -draw_ctx->buf_area->x1, -draw_ctx->buf_area->y1);
lv_draw_stm32_dma2d_blend_map(dest_buf, &blend_area, dest_stride, src_buf, src_stride, dsc->opa);
done = true;
}
else if(dsc->opa >= LV_OPA_MAX) {
lv_area_move(&blend_area, -draw_ctx->buf_area->x1, -draw_ctx->buf_area->y1);
lv_draw_stm32_dma2d_blend_fill(dest_buf, dest_stride, &blend_area, dsc->color);
done = true;
}
}
if(!done) lv_draw_sw_blend_basic(draw_ctx, dsc);
}
void lv_draw_stm32_dma2d_buffer_copy(lv_draw_ctx_t * draw_ctx,
void * dest_buf, lv_coord_t dest_stride, const lv_area_t * dest_area,
void * src_buf, lv_coord_t src_stride, const lv_area_t * src_area)
{
LV_UNUSED(draw_ctx);
lv_draw_stm32_dma2d_blend_map(dest_buf, dest_area, dest_stride, src_buf, src_stride, LV_OPA_MAX);
}
static void lv_draw_stm32_dma2d_img_decoded(lv_draw_ctx_t * draw_ctx, const lv_draw_img_dsc_t * dsc,
const lv_area_t * coords, const uint8_t * map_p, lv_img_cf_t color_format)
{
/*TODO basic ARGB8888 image can be handles here*/
lv_draw_sw_img_decoded(draw_ctx, dsc, coords, map_p, color_format);
}
static void lv_draw_stm32_dma2d_blend_fill(lv_color_t * dest_buf, lv_coord_t dest_stride, const lv_area_t * fill_area,
lv_color_t color)
{
/*Simply fill an area*/
int32_t area_w = lv_area_get_width(fill_area);
int32_t area_h = lv_area_get_height(fill_area);
invalidate_cache();
DMA2D->CR = 0x30000;
DMA2D->OMAR = (uint32_t)dest_buf;
/*as input color mode is same as output we don't need to convert here do we?*/
DMA2D->OCOLR = color.full;
DMA2D->OOR = dest_stride - area_w;
DMA2D->NLR = (area_w << DMA2D_NLR_PL_Pos) | (area_h << DMA2D_NLR_NL_Pos);
/*start transfer*/
DMA2D->CR |= DMA2D_CR_START_Msk;
}
static void lv_draw_stm32_dma2d_blend_map(lv_color_t * dest_buf, const lv_area_t * dest_area, lv_coord_t dest_stride,
const lv_color_t * src_buf, lv_coord_t src_stride, lv_opa_t opa)
{
/*Simple copy*/
int32_t dest_w = lv_area_get_width(dest_area);
int32_t dest_h = lv_area_get_height(dest_area);
invalidate_cache();
if(opa >= LV_OPA_MAX) {
DMA2D->CR = 0;
/*copy output colour mode, this register controls both input and output colour format*/
DMA2D->FGPFCCR = LV_DMA2D_COLOR_FORMAT;
DMA2D->FGMAR = (uint32_t)src_buf;
DMA2D->FGOR = src_stride - dest_w;
DMA2D->OMAR = (uint32_t)dest_buf;
DMA2D->OOR = dest_stride - dest_w;
DMA2D->NLR = (dest_w << DMA2D_NLR_PL_Pos) | (dest_h << DMA2D_NLR_NL_Pos);
/*start transfer*/
DMA2D->CR |= DMA2D_CR_START_Msk;
}
else {
DMA2D->CR = 0x20000;
DMA2D->BGPFCCR = LV_DMA2D_COLOR_FORMAT;
DMA2D->BGMAR = (uint32_t)dest_buf;
DMA2D->BGOR = dest_stride - dest_w;
DMA2D->FGPFCCR = (uint32_t)LV_DMA2D_COLOR_FORMAT
/*alpha mode 2, replace with foreground * alpha value*/
| (2 << DMA2D_FGPFCCR_AM_Pos)
/*alpha value*/
| (opa << DMA2D_FGPFCCR_ALPHA_Pos);
DMA2D->FGMAR = (uint32_t)src_buf;
DMA2D->FGOR = src_stride - dest_w;
DMA2D->OMAR = (uint32_t)src_buf;
DMA2D->OOR = src_stride - dest_w;
DMA2D->NLR = (dest_w << DMA2D_NLR_PL_Pos) | (dest_h << DMA2D_NLR_NL_Pos);
/*start transfer*/
DMA2D->CR |= DMA2D_CR_START_Msk;
}
}
void lv_gpu_stm32_dma2d_wait_cb(lv_draw_ctx_t * draw_ctx)
{
lv_disp_t * disp = _lv_refr_get_disp_refreshing();
if(disp->driver && disp->driver->wait_cb) {
while(DMA2D->CR & DMA2D_CR_START_Msk) {
disp->driver->wait_cb(disp->driver);
}
}
else {
while(DMA2D->CR & DMA2D_CR_START_Msk);
}
lv_draw_sw_wait_for_finish(draw_ctx);
}
/**********************
* STATIC FUNCTIONS
**********************/
static void invalidate_cache(void)
{
lv_disp_t * disp = _lv_refr_get_disp_refreshing();
if(disp->driver->clean_dcache_cb) disp->driver->clean_dcache_cb(disp->driver);
else {
#if __CORTEX_M >= 0x07
if((SCB->CCR) & (uint32_t)SCB_CCR_DC_Msk)
SCB_CleanInvalidateDCache();
#endif
}
}
#endif
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