mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-11 05:42:58 +00:00
e160f7d430
At present devices use a simple integer offset to record the device tree node associated with the device. In preparation for supporting a live device tree, which uses a node pointer instead, refactor existing code to access this field through an inline function. Signed-off-by: Simon Glass <sjg@chromium.org>
56 lines
1.2 KiB
C
56 lines
1.2 KiB
C
/*
|
|
* Copyright (C) 2016 Masahiro Yamada <yamada.masahiro@socionext.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <clk-uclass.h>
|
|
#include <dm/device.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
struct clk_fixed_rate {
|
|
unsigned long fixed_rate;
|
|
};
|
|
|
|
#define to_clk_fixed_rate(dev) ((struct clk_fixed_rate *)dev_get_platdata(dev))
|
|
|
|
static ulong clk_fixed_rate_get_rate(struct clk *clk)
|
|
{
|
|
if (clk->id != 0)
|
|
return -EINVAL;
|
|
|
|
return to_clk_fixed_rate(clk->dev)->fixed_rate;
|
|
}
|
|
|
|
const struct clk_ops clk_fixed_rate_ops = {
|
|
.get_rate = clk_fixed_rate_get_rate,
|
|
};
|
|
|
|
static int clk_fixed_rate_ofdata_to_platdata(struct udevice *dev)
|
|
{
|
|
#if !CONFIG_IS_ENABLED(OF_PLATDATA)
|
|
to_clk_fixed_rate(dev)->fixed_rate =
|
|
fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev),
|
|
"clock-frequency", 0);
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct udevice_id clk_fixed_rate_match[] = {
|
|
{
|
|
.compatible = "fixed-clock",
|
|
},
|
|
{ /* sentinel */ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(clk_fixed_rate) = {
|
|
.name = "fixed_rate_clock",
|
|
.id = UCLASS_CLK,
|
|
.of_match = clk_fixed_rate_match,
|
|
.ofdata_to_platdata = clk_fixed_rate_ofdata_to_platdata,
|
|
.platdata_auto_alloc_size = sizeof(struct clk_fixed_rate),
|
|
.ops = &clk_fixed_rate_ops,
|
|
};
|