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dm: core: Add support for simple-bus

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Add a driver for the simple-bus nodes, which allows devices within these
nodes to be bound.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2014-10-04 11:29:37 -06:00
parent 3f0e935f22
commit da802b9e27
3 changed files with 35 additions and 0 deletions
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1
drivers/core/Makefile
View file

@ -5,3 +5,4 @@
# #
obj-y := device.o lists.o root.o uclass.o util.o obj-y := device.o lists.o root.o uclass.o util.o
obj-$(CONFIG_OF_CONTROL) += simple-bus.o

33
drivers/core/simple-bus.c Normal file
View file

@ -0,0 +1,33 @@
/*
* Copyright (c) 2014 Google, Inc
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <dm/root.h>
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,
};

1
include/dm/uclass-id.h
View file

@ -19,6 +19,7 @@ enum uclass_id {
UCLASS_TEST_FDT, UCLASS_TEST_FDT,
UCLASS_TEST_BUS, UCLASS_TEST_BUS,
UCLASS_SPI_EMUL, /* sandbox SPI device emulator */ UCLASS_SPI_EMUL, /* sandbox SPI device emulator */
UCLASS_SIMPLE_BUS,
/* U-Boot uclasses start here */ /* U-Boot uclasses start here */
UCLASS_GPIO, /* Bank of general-purpose I/O pins */ UCLASS_GPIO, /* Bank of general-purpose I/O pins */