obj-$(CONFIG_SPI_MASTER) += spi.o
# SPI master controller drivers (bus)
+obj-$(CONFIG_SPI_BITBANG) += spi_bitbang.o
+obj-$(CONFIG_SPI_BUTTERFLY) += spi_butterfly.o
+obj-$(CONFIG_SPI_PXA2XX) += pxa2xx_spi.o
# ... add above this line ...
# SPI protocol drivers (device/link on bus)