LCCR4
lcd_writel(fbi, LCCR4, fbi->reg_lccr4);
fbi->reg_lccr4 = lcd_readl(fbi, LCCR4) & ~LCCR4_PAL_FOR_MASK;
(lcd_readl(fbi, LCCR4) != fbi->reg_lccr4) ||