RSB_DMCR_DEVICE_START 499 drivers/bus/sunxi-rsb.c writel(RSB_DMCR_DEVICE_START | RSB_DMCR_MODE_DATA | RSB_DMCR_DEVICE_START 503 drivers/bus/sunxi-rsb.c !(reg & RSB_DMCR_DEVICE_START), 100, 250000); RSB_DMCR_DEVICE_START 504 drivers/bus/sunxi-rsb.c if (reg & RSB_DMCR_DEVICE_START)