u-boot/drivers/clk/clk.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2019 DENX Software Engineering
 * Lukasz Majewski, DENX Software Engineering, lukma@denx.de
 */

#include <common.h>
#include <clk-uclass.h>
#include <dm/device.h>
#include <dm/uclass.h>
#include <dm/lists.h>
#include <dm/device-internal.h>
#include <clk.h>

int clk_register(struct clk *clk, const char *drv_name,
		 const char *name, const char *parent_name)
{
	struct udevice *parent;
	struct driver *drv;
	int ret;

	ret = uclass_get_device_by_name(UCLASS_CLK, parent_name, &parent);
	if (ret)
		printf("%s: UCLASS parent: 0x%p\n", __func__, parent);

	debug("%s: name: %s parent: %s [0x%p]\n", __func__, name, parent->name,
	      parent);

	drv = lists_driver_lookup_name(drv_name);
	if (!drv) {
		printf("%s: %s is not a valid driver name\n",
		       __func__, drv_name);
		return -ENOENT;
	}

	ret = device_bind(parent, drv, name, NULL, -1, &clk->dev);
	if (ret) {
		printf("%s: CLK: %s driver bind error [%d]!\n", __func__, name,
		       ret);
		return ret;
	}

	/* Store back pointer to clk from udevice */
	clk->dev->uclass_priv = clk;

	return 0;
}

ulong clk_generic_get_rate(struct clk *clk)
{
	return clk_get_parent_rate(clk);
}

const char *clk_hw_get_name(const struct clk *hw)
{
	return hw->dev->name;
}