36 static int hw_rev = -1;	/* hardware revision */  variable
40 	if (hw_rev >= 0)  in get_hw_rev()
41 		return hw_rev;  in get_hw_rev()
43 	hw_rev = at91_get_pio_value(AT91_PIO_PORTB, 19);  in get_hw_rev()
44 	hw_rev |= at91_get_pio_value(AT91_PIO_PORTB, 20) << 1;  in get_hw_rev()
45 	hw_rev |= at91_get_pio_value(AT91_PIO_PORTB, 21) << 2;  in get_hw_rev()
46 	hw_rev |= at91_get_pio_value(AT91_PIO_PORTB, 22) << 3;  in get_hw_rev()
48 	if (hw_rev == 15)  in get_hw_rev()
49 		hw_rev = 0;  in get_hw_rev()
51 	return hw_rev;  in get_hw_rev()
220 	return hw_rev | 0x100;  in get_board_rev()