clk: meson: add clk-input helper function

#

obj-$(CONFIG_COMMON_CLK_AMLOGIC) += clk-pll.o clk-mpll.o clk-phase.o vid-pll-div.o

obj-$(CONFIG_COMMON_CLK_AMLOGIC) += clk-input.o

obj-$(CONFIG_COMMON_CLK_AMLOGIC_AUDIO)	+= clk-triphase.o sclk-div.o

obj-$(CONFIG_COMMON_CLK_MESON_AO) += meson-aoclk.o

obj-$(CONFIG_COMMON_CLK_MESON8B) += meson8b.o

// SPDX-License-Identifier: (GPL-2.0 OR MIT)

/*

 * Copyright (c) 2018 BayLibre, SAS.

 * Author: Jerome Brunet <jbrunet@baylibre.com>

 */

#include <linux/clk.h>

#include <linux/clk-provider.h>

#include <linux/device.h>

#include "clkc.h"

static const struct clk_ops meson_clk_no_ops = {};

struct clk_hw *meson_clk_hw_register_input(struct device *dev,

					   const char *of_name,

					   const char *clk_name,

					   unsigned long flags)

{

	struct clk *parent_clk = devm_clk_get(dev, of_name);

	struct clk_init_data init;

	const char *parent_name;

	struct clk_hw *hw;

	int ret;

	if (IS_ERR(parent_clk))

		return (struct clk_hw *)parent_clk;

	hw = devm_kzalloc(dev, sizeof(*hw), GFP_KERNEL);

	if (!hw)

		return ERR_PTR(-ENOMEM);

	parent_name = __clk_get_name(parent_clk);

	init.name = clk_name;

	init.ops = &meson_clk_no_ops;

	init.flags = flags;

	init.parent_names = &parent_name;

	init.num_parents = 1;

	hw->init = &init;

	ret = devm_clk_hw_register(dev, hw);

	return ret ? ERR_PTR(ret) : hw;

}

EXPORT_SYMBOL_GPL(meson_clk_hw_register_input);

extern const struct clk_ops meson_clk_phase_ops;

extern const struct clk_ops meson_vid_pll_div_ro_ops;

struct clk_hw *meson_clk_hw_register_input(struct device *dev,

					   const char *of_name,

					   const char *clk_name,

					   unsigned long flags);

#endif /* __CLKC_H */