linux/drivers/cpufreq/omap-cpufreq.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 *  CPU frequency scaling for OMAP using OPP information
 *
 *  Copyright (C) 2005 Nokia Corporation
 *  Written by Tony Lindgren <[email protected]>
 *
 *  Based on cpu-sa1110.c, Copyright (C) 2001 Russell King
 *
 * Copyright (C) 2007-2011 Texas Instruments, Inc.
 * - OMAP3/4 support by Rajendra Nayak, Santosh Shilimkar
 */

#define pr_fmt(fmt) …

#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/cpufreq.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/pm_opp.h>
#include <linux/cpu.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>

/* OPP tolerance in percentage */
#define OPP_TOLERANCE …

static struct cpufreq_frequency_table *freq_table;
static atomic_t freq_table_users = …;
static struct device *mpu_dev;
static struct regulator *mpu_reg;

static int omap_target(struct cpufreq_policy *policy, unsigned int index)
{ … }

static inline void freq_table_free(void)
{ … }

static int omap_cpu_init(struct cpufreq_policy *policy)
{ … }

static void omap_cpu_exit(struct cpufreq_policy *policy)
{ … }

static struct cpufreq_driver omap_driver = …;

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

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

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

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