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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 <malloc.h>
- #include <clk-uclass.h>
- #include <dm/device.h>
- #include <dm/devres.h>
- #include <linux/clk-provider.h>
- #include <div64.h>
- #include <clk.h>
- #include "clk.h"
- #include <linux/err.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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