VbError_t VbDisplayScreen(VbCommonParams *cparams, uint32_t screen,
int force, VbNvContext *vncptr)
{
VbError_t retval;
/* Initialize display if necessary */
if (!disp_width) {
retval = VbExDisplayInit(&disp_width, &disp_height);
if (VBERROR_SUCCESS != retval)
return retval;
}
/* If requested screen is the same as the current one, we're done. */
if (disp_current_screen == screen && 0 == force)
return VBERROR_SUCCESS;
/* If the screen is blank, turn off the backlight; else turn it on. */
VbExDisplayBacklight(VB_SCREEN_BLANK == screen ? 0 : 1);
/* Request the screen */
disp_current_screen = screen;
/* Look in the GBB first */
if (VBERROR_SUCCESS == VbDisplayScreenFromGBB(cparams, screen,
vncptr))
return VBERROR_SUCCESS;
/* If screen wasn't in the GBB bitmaps, fall back to a default */
return VbExDisplayScreen(screen);
}
static int show_screen_and_delay(uint32_t screen_type)
{
if (VbExDisplayScreen(screen_type)) {
VbExDebug("Failed to show a screen.\n");
return 1;
}
VbExSleepMs(1000);
return 0;
}
