linux/drivers/clk/clk-scpi.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * System Control and Power Interface (SCPI) Protocol based clock driver
 *
 * Copyright (C) 2015 ARM Ltd.
 */

#include <linux/clk-provider.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/of.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/scpi_protocol.h>

struct scpi_clk { … };

#define to_scpi_clk(clk) …

static struct platform_device *cpufreq_dev;

static unsigned long scpi_clk_recalc_rate(struct clk_hw *hw,
					  unsigned long parent_rate)
{ … }

static long scpi_clk_round_rate(struct clk_hw *hw, unsigned long rate,
				unsigned long *parent_rate)
{ … }

static int scpi_clk_set_rate(struct clk_hw *hw, unsigned long rate,
			     unsigned long parent_rate)
{ … }

static const struct clk_ops scpi_clk_ops = …;

/* find closest match to given frequency in OPP table */
static long __scpi_dvfs_round_rate(struct scpi_clk *clk, unsigned long rate)
{ … }

static unsigned long scpi_dvfs_recalc_rate(struct clk_hw *hw,
					   unsigned long parent_rate)
{ … }

static long scpi_dvfs_round_rate(struct clk_hw *hw, unsigned long rate,
				 unsigned long *parent_rate)
{ … }

static int __scpi_find_dvfs_index(struct scpi_clk *clk, unsigned long rate)
{ … }

static int scpi_dvfs_set_rate(struct clk_hw *hw, unsigned long rate,
			      unsigned long parent_rate)
{ … }

static const struct clk_ops scpi_dvfs_ops = …;

static const struct of_device_id scpi_clk_match[] __maybe_unused = …;

static int
scpi_clk_ops_init(struct device *dev, const struct of_device_id *match,
		  struct scpi_clk *sclk, const char *name)
{ … }

struct scpi_clk_data { … };

static struct clk_hw *
scpi_of_clk_src_get(struct of_phandle_args *clkspec, void *data)
{ … }

static int scpi_clk_add(struct device *dev, struct device_node *np,
			const struct of_device_id *match)
{ … }

static void scpi_clocks_remove(struct platform_device *pdev)
{ … }

static int scpi_clocks_probe(struct platform_device *pdev)
{ … }

static const struct of_device_id scpi_clocks_ids[] = …;
MODULE_DEVICE_TABLE(of, scpi_clocks_ids);

static struct platform_driver scpi_clocks_driver = …;
module_platform_driver(…) …;

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;