pm_set_brightness
brightness = pm_set_brightness(level);
brightness = pm_set_brightness(level);
(void)pm_set_brightness(brightness);
(void)pm_set_brightness(0);
val = pm_set_brightness(val);
pm_set_brightness(pm_LCD_brightness);
pm_set_brightness(pm_LCD_brightness);
u_int pm_set_brightness(u_int);
pm_set_brightness(sc->brightness);
pm_set_brightness(sc->brightness);
pm_set_brightness(bright);
pm_set_brightness(val);
void pm_set_brightness(int);