RM3100_CHANNEL 255 drivers/iio/magnetometer/rm3100-core.c RM3100_CHANNEL(X, 0), RM3100_CHANNEL 256 drivers/iio/magnetometer/rm3100-core.c RM3100_CHANNEL(Y, 1), RM3100_CHANNEL 257 drivers/iio/magnetometer/rm3100-core.c RM3100_CHANNEL(Z, 2),