From da802b9e2726c7467e0b402efeb6ad3d975f1282 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Sat, 4 Oct 2014 11:29:37 -0600 Subject: [PATCH] dm: core: Add support for simple-bus Add a driver for the simple-bus nodes, which allows devices within these nodes to be bound. Signed-off-by: Simon Glass --- drivers/core/Makefile | 1 + drivers/core/simple-bus.c | 33 +++++++++++++++++++++++++++++++++ include/dm/uclass-id.h | 1 + 3 files changed, 35 insertions(+) create mode 100644 drivers/core/simple-bus.c diff --git a/drivers/core/Makefile b/drivers/core/Makefile index c7905b1440..151c2398a4 100644 --- a/drivers/core/Makefile +++ b/drivers/core/Makefile @@ -5,3 +5,4 @@ # obj-y := device.o lists.o root.o uclass.o util.o +obj-$(CONFIG_OF_CONTROL) += simple-bus.o diff --git a/drivers/core/simple-bus.c b/drivers/core/simple-bus.c new file mode 100644 index 0000000000..3ea4d8230b --- /dev/null +++ b/drivers/core/simple-bus.c @@ -0,0 +1,33 @@ +/* + * Copyright (c) 2014 Google, Inc + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +static int simple_bus_post_bind(struct udevice *dev) +{ + return dm_scan_fdt_node(dev, gd->fdt_blob, dev->of_offset, false); +} + +UCLASS_DRIVER(simple_bus) = { + .id = UCLASS_SIMPLE_BUS, + .name = "simple_bus", + .post_bind = simple_bus_post_bind, +}; + +static const struct udevice_id generic_simple_bus_ids[] = { + { .compatible = "simple-bus" }, + { } +}; + +U_BOOT_DRIVER(simple_bus_drv) = { + .name = "generic_simple_bus", + .id = UCLASS_SIMPLE_BUS, + .of_match = generic_simple_bus_ids, +}; diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h index 0ea7a6f09e..a8944c97d0 100644 --- a/include/dm/uclass-id.h +++ b/include/dm/uclass-id.h @@ -19,6 +19,7 @@ enum uclass_id { UCLASS_TEST_FDT, UCLASS_TEST_BUS, UCLASS_SPI_EMUL, /* sandbox SPI device emulator */ + UCLASS_SIMPLE_BUS, /* U-Boot uclasses start here */ UCLASS_GPIO, /* Bank of general-purpose I/O pins */ -- 2.39.5