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[target][stm32746g-eval2] add cache flushing routine to lcd updates

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This commit is contained in:
Travis Geiselbrecht
2015-08-19 17:53:34 -07:00
parent dc454e719c
commit 462a40c597
1 changed files with 15 additions and 1 deletions
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16
target/stm32746g-eval2/lcd.c
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@@ -381,6 +381,20 @@ uint8_t BSP_LCD_Init(void)
}
/* LK display api here */
static void display_flush(uint starty, uint endy)
{
if (endy <= starty)
return;
uint32_t xsize = BSP_LCD_GetXSize();
uint8_t *ptr = (uint8_t *)hLtdcEval.LayerCfg[ActiveLayer].FBStartAdress + starty * xsize;
size_t len = (endy - starty) * xsize * 4;
/* flush the dirty cache lines for the updated region */
SCB_CleanDCache_by_Addr((uint32_t *)ptr, len);
}
void display_get_info(struct display_info *info)
{
info->framebuffer = (void *)hLtdcEval.LayerCfg[ActiveLayer].FBStartAdress;
@@ -399,6 +413,6 @@ void display_get_info(struct display_info *info)
info->width = BSP_LCD_GetXSize();
info->height = BSP_LCD_GetYSize();
info->stride = BSP_LCD_GetXSize();
info->flush = NULL; // XXX cache flush
info->flush = &display_flush;
}