mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-15 01:17:39 +00:00
a4b10c088c
This function adds quite a bit of code to SPL and we probably don't need all the features in SPL. Add a simple version (for SPL only) to save space. Signed-off-by: Simon Glass <sjg@chromium.org>
112 lines
2.2 KiB
C
112 lines
2.2 KiB
C
/*
|
|
* Copyright (C) 2015 Google, Inc
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <clk.h>
|
|
#include <dm.h>
|
|
#include <errno.h>
|
|
#include <dm/lists.h>
|
|
#include <dm/root.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
ulong clk_get_rate(struct udevice *dev)
|
|
{
|
|
struct clk_ops *ops = clk_get_ops(dev);
|
|
|
|
if (!ops->get_rate)
|
|
return -ENOSYS;
|
|
|
|
return ops->get_rate(dev);
|
|
}
|
|
|
|
ulong clk_set_rate(struct udevice *dev, ulong rate)
|
|
{
|
|
struct clk_ops *ops = clk_get_ops(dev);
|
|
|
|
if (!ops->set_rate)
|
|
return -ENOSYS;
|
|
|
|
return ops->set_rate(dev, rate);
|
|
}
|
|
|
|
int clk_enable(struct udevice *dev, int periph)
|
|
{
|
|
struct clk_ops *ops = clk_get_ops(dev);
|
|
|
|
if (!ops->enable)
|
|
return -ENOSYS;
|
|
|
|
return ops->enable(dev, periph);
|
|
}
|
|
|
|
ulong clk_get_periph_rate(struct udevice *dev, int periph)
|
|
{
|
|
struct clk_ops *ops = clk_get_ops(dev);
|
|
|
|
if (!ops->get_periph_rate)
|
|
return -ENOSYS;
|
|
|
|
return ops->get_periph_rate(dev, periph);
|
|
}
|
|
|
|
ulong clk_set_periph_rate(struct udevice *dev, int periph, ulong rate)
|
|
{
|
|
struct clk_ops *ops = clk_get_ops(dev);
|
|
|
|
if (!ops->set_periph_rate)
|
|
return -ENOSYS;
|
|
|
|
return ops->set_periph_rate(dev, periph, rate);
|
|
}
|
|
|
|
#if CONFIG_IS_ENABLED(OF_CONTROL)
|
|
int clk_get_by_index(struct udevice *dev, int index, struct udevice **clk_devp)
|
|
{
|
|
int ret;
|
|
#ifdef CONFIG_SPL_BUILD
|
|
u32 cell[2];
|
|
|
|
if (index != 0)
|
|
return -ENOSYS;
|
|
assert(*clk_devp);
|
|
ret = uclass_get_device(UCLASS_CLK, 0, clk_devp);
|
|
if (ret)
|
|
return ret;
|
|
ret = fdtdec_get_int_array(gd->fdt_blob, dev->of_offset, "clocks",
|
|
cell, 2);
|
|
if (ret)
|
|
return ret;
|
|
return cell[1];
|
|
#else
|
|
struct fdtdec_phandle_args args;
|
|
|
|
assert(*clk_devp);
|
|
ret = fdtdec_parse_phandle_with_args(gd->fdt_blob, dev->of_offset,
|
|
"clocks", "#clock-cells", 0, index,
|
|
&args);
|
|
if (ret) {
|
|
debug("%s: fdtdec_parse_phandle_with_args failed: err=%d\n",
|
|
__func__, ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = uclass_get_device_by_of_offset(UCLASS_CLK, args.node, clk_devp);
|
|
if (ret) {
|
|
debug("%s: uclass_get_device_by_of_offset failed: err=%d\n",
|
|
__func__, ret);
|
|
return ret;
|
|
}
|
|
return args.args_count > 0 ? args.args[0] : 0;
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
UCLASS_DRIVER(clk) = {
|
|
.id = UCLASS_CLK,
|
|
.name = "clk",
|
|
};
|