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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2019 DENX Software Engineering
* Lukasz Majewski, DENX Software Engineering, lukma@denx.de
*
* Copyright (C) 2011 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>
*/
#include <common.h>
#include <clk.h>
#include <clk-uclass.h>
#include <div64.h>
#include <malloc.h>
#include <dm/device.h>
#include <dm/devres.h>
#include <linux/clk-provider.h>
#include <linux/err.h>
#include "clk.h"
#define UBOOT_DM_CLK_IMX_FIXED_FACTOR "ccf_clk_fixed_factor"
static ulong clk_factor_recalc_rate(struct clk *clk)
{
struct clk_fixed_factor *fix = to_clk_fixed_factor(clk);
unsigned long parent_rate = clk_get_parent_rate(clk);
unsigned long long int rate;
rate = (unsigned long long int)parent_rate * fix->mult;
do_div(rate, fix->div);
return (ulong)rate;
}
const struct clk_ops ccf_clk_fixed_factor_ops = {
.get_rate = clk_factor_recalc_rate,
};
struct clk *clk_hw_register_fixed_factor(struct device *dev,
const char *name, const char *parent_name, unsigned long flags,
unsigned int mult, unsigned int div)
{
struct clk_fixed_factor *fix;
struct clk *clk;
int ret;
fix = kzalloc(sizeof(*fix), GFP_KERNEL);
if (!fix)
return ERR_PTR(-ENOMEM);
/* struct clk_fixed_factor assignments */
fix->mult = mult;
fix->div = div;
clk = &fix->clk;
clk->flags = flags;
ret = clk_register(clk, UBOOT_DM_CLK_IMX_FIXED_FACTOR, name,
parent_name);
if (ret) {
kfree(fix);
return ERR_PTR(ret);
}
return clk;
}
struct clk *clk_register_fixed_factor(struct device *dev, const char *name,
const char *parent_name, unsigned long flags,
unsigned int mult, unsigned int div)
{
struct clk *clk;
clk = clk_hw_register_fixed_factor(dev, name, parent_name, flags, mult,
div);
if (IS_ERR(clk))
return ERR_CAST(clk);
return clk;
}
U_BOOT_DRIVER(imx_clk_fixed_factor) = {
.name = UBOOT_DM_CLK_IMX_FIXED_FACTOR,
.id = UCLASS_CLK,
.ops = &ccf_clk_fixed_factor_ops,
.flags = DM_FLAG_PRE_RELOC,
};
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