SS4_MIN_PITCH_MM 2519 drivers/input/mouse/alps.c x_pitch = ((otp[1][2] >> 2) & 0x07) + SS4_MIN_PITCH_MM; SS4_MIN_PITCH_MM 2520 drivers/input/mouse/alps.c y_pitch = ((otp[1][2] >> 5) & 0x07) + SS4_MIN_PITCH_MM;