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/**
* @file lv_nuttx_cache.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_nuttx_cache.h"
#include "../../../lvgl.h"
#if LV_USE_NUTTX
#include <nuttx/cache.h>
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static void invalidate_cache(const lv_draw_buf_t * draw_buf, const lv_area_t * area);
static void flush_cache(const lv_draw_buf_t * draw_buf, const lv_area_t * area);
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
void lv_nuttx_cache_init(void)
{
lv_draw_buf_handlers_t * handlers = lv_draw_buf_get_handlers();
handlers->invalidate_cache_cb = invalidate_cache;
handlers->flush_cache_cb = flush_cache;
}
/**********************
* STATIC FUNCTIONS
**********************/
static void draw_buf_to_region(
const lv_draw_buf_t * draw_buf, const lv_area_t * area,
lv_uintptr_t * start, lv_uintptr_t * end)
{
LV_ASSERT_NULL(draw_buf);
LV_ASSERT_NULL(area);
LV_ASSERT_NULL(start);
LV_ASSERT_NULL(end);
void * buf = draw_buf->data;
uint32_t stride = draw_buf->header.stride;
int32_t h = lv_area_get_height(area);
*start = (lv_uintptr_t)buf + area->y1 * stride;
*end = *start + h * stride;
}
static void invalidate_cache(const lv_draw_buf_t * draw_buf, const lv_area_t * area)
{
lv_uintptr_t start;
lv_uintptr_t end;
draw_buf_to_region(draw_buf, area, &start, &end);
up_invalidate_dcache(start, end);
}
static void flush_cache(const lv_draw_buf_t * draw_buf, const lv_area_t * area)
{
lv_uintptr_t start;
lv_uintptr_t end;
draw_buf_to_region(draw_buf, area, &start, &end);
up_flush_dcache(start, end);
}
#endif /* LV_USE_NUTTX */
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