RPI_TS_NPOINTS_REG_INVALIDATE 79 drivers/input/touchscreen/raspberrypi-ts.c iowrite8(RPI_TS_NPOINTS_REG_INVALIDATE, RPI_TS_NPOINTS_REG_INVALIDATE 82 drivers/input/touchscreen/raspberrypi-ts.c if (regs.num_points == RPI_TS_NPOINTS_REG_INVALIDATE ||