mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-30 00:21:06 +00:00
9f56917ab8
Simple MFD devices can bind children without special bus configuration. Like Linux, let's handle "simple-mfd" in the same way as "simple-bus". Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Simon Glass <sjg@chromium.org>
64 lines
1.3 KiB
C
64 lines
1.3 KiB
C
/*
|
|
* 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;
|
|
|
|
struct simple_bus_plat {
|
|
u32 base;
|
|
u32 size;
|
|
u32 target;
|
|
};
|
|
|
|
fdt_addr_t simple_bus_translate(struct udevice *dev, fdt_addr_t addr)
|
|
{
|
|
struct simple_bus_plat *plat = dev_get_uclass_platdata(dev);
|
|
|
|
if (addr >= plat->base && addr < plat->base + plat->size)
|
|
addr = (addr - plat->base) + plat->target;
|
|
|
|
return addr;
|
|
}
|
|
|
|
static int simple_bus_post_bind(struct udevice *dev)
|
|
{
|
|
u32 cell[3];
|
|
int ret;
|
|
|
|
ret = fdtdec_get_int_array(gd->fdt_blob, dev->of_offset, "ranges",
|
|
cell, ARRAY_SIZE(cell));
|
|
if (!ret) {
|
|
struct simple_bus_plat *plat = dev_get_uclass_platdata(dev);
|
|
|
|
plat->base = cell[0];
|
|
plat->target = cell[1];
|
|
plat->size = cell[2];
|
|
}
|
|
|
|
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,
|
|
.per_device_platdata_auto_alloc_size = sizeof(struct simple_bus_plat),
|
|
};
|
|
|
|
static const struct udevice_id generic_simple_bus_ids[] = {
|
|
{ .compatible = "simple-bus" },
|
|
{ .compatible = "simple-mfd" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(simple_bus_drv) = {
|
|
.name = "generic_simple_bus",
|
|
.id = UCLASS_SIMPLE_BUS,
|
|
.of_match = generic_simple_bus_ids,
|
|
};
|