1 files changed, 0 insertions, 338 deletions
diff --git a/drivers/cpufreq/exynos-cpufreq.c b/drivers/cpufreq/exynos-cpufreq.c
deleted file mode 100644
index 0d32f02ef4d6..000000000000
--- a/drivers/cpufreq/exynos-cpufreq.c
+++ /dev/null
@@ -1,338 +0,0 @@
-/*
- * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
- *		http://www.samsung.com
- *
- * EXYNOS - CPU frequency scaling support for EXYNOS series
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
-
-#include <linux/kernel.h>
-#include <linux/err.h>
-#include <linux/clk.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-#include <linux/regulator/consumer.h>
-#include <linux/cpufreq.h>
-#include <linux/suspend.h>
-
-#include <plat/cpu.h>
-
-#include "exynos-cpufreq.h"
-
-static struct exynos_dvfs_info *exynos_info;
-
-static struct regulator *arm_regulator;
-static struct cpufreq_freqs freqs;
-
-static unsigned int locking_frequency;
-static bool frequency_locked;
-static DEFINE_MUTEX(cpufreq_lock);
-
-static int exynos_verify_speed(struct cpufreq_policy *policy)
-{
-	return cpufreq_frequency_table_verify(policy,
-					      exynos_info->freq_table);
-}
-
-static unsigned int exynos_getspeed(unsigned int cpu)
-{
-	return clk_get_rate(exynos_info->cpu_clk) / 1000;
-}
-
-static int exynos_cpufreq_get_index(unsigned int freq)
-{
-	struct cpufreq_frequency_table *freq_table = exynos_info->freq_table;
-	int index;
-
-	for (index = 0;
-		freq_table[index].frequency != CPUFREQ_TABLE_END; index++)
-		if (freq_table[index].frequency == freq)
-			break;
-
-	if (freq_table[index].frequency == CPUFREQ_TABLE_END)
-		return -EINVAL;
-
-	return index;
-}
-
-static int exynos_cpufreq_scale(unsigned int target_freq)
-{
-	struct cpufreq_frequency_table *freq_table = exynos_info->freq_table;
-	unsigned int *volt_table = exynos_info->volt_table;
-	struct cpufreq_policy *policy = cpufreq_cpu_get(0);
-	unsigned int arm_volt, safe_arm_volt = 0;
-	unsigned int mpll_freq_khz = exynos_info->mpll_freq_khz;
-	int index, old_index;
-	int ret = 0;
-
-	freqs.old = policy->cur;
-	freqs.new = target_freq;
-
-	if (freqs.new == freqs.old)
-		goto out;
-
-	/*
-	 * The policy max have been changed so that we cannot get proper
-	 * old_index with cpufreq_frequency_table_target(). Thus, ignore
-	 * policy and get the index from the raw freqeuncy table.
-	 */
-	old_index = exynos_cpufreq_get_index(freqs.old);
-	if (old_index < 0) {
-		ret = old_index;
-		goto out;
-	}
-
-	index = exynos_cpufreq_get_index(target_freq);
-	if (index < 0) {
-		ret = index;
-		goto out;
-	}
-
-	/*
-	 * ARM clock source will be changed APLL to MPLL temporary
-	 * To support this level, need to control regulator for
-	 * required voltage level
-	 */
-	if (exynos_info->need_apll_change != NULL) {
-		if (exynos_info->need_apll_change(old_index, index) &&
-		   (freq_table[index].frequency < mpll_freq_khz) &&
-		   (freq_table[old_index].frequency < mpll_freq_khz))
-			safe_arm_volt = volt_table[exynos_info->pll_safe_idx];
-	}
-	arm_volt = volt_table[index];
-
-	cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
-
-	/* When the new frequency is higher than current frequency */
-	if ((freqs.new > freqs.old) && !safe_arm_volt) {
-		/* Firstly, voltage up to increase frequency */
-		ret = regulator_set_voltage(arm_regulator, arm_volt, arm_volt);
-		if (ret) {
-			pr_err("%s: failed to set cpu voltage to %d\n",
-				__func__, arm_volt);
-			freqs.new = freqs.old;
-			goto post_notify;
-		}
-	}
-
-	if (safe_arm_volt) {
-		ret = regulator_set_voltage(arm_regulator, safe_arm_volt,
-				      safe_arm_volt);
-		if (ret) {
-			pr_err("%s: failed to set cpu voltage to %d\n",
-				__func__, safe_arm_volt);
-			freqs.new = freqs.old;
-			goto post_notify;
-		}
-	}
-
-	exynos_info->set_freq(old_index, index);
-
-post_notify:
-	cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
-
-	if (ret)
-		goto out;
-
-	/* When the new frequency is lower than current frequency */
-	if ((freqs.new < freqs.old) ||
-	   ((freqs.new > freqs.old) && safe_arm_volt)) {
-		/* down the voltage after frequency change */
-		regulator_set_voltage(arm_regulator, arm_volt,
-				arm_volt);
-		if (ret) {
-			pr_err("%s: failed to set cpu voltage to %d\n",
-				__func__, arm_volt);
-			goto out;
-		}
-	}
-
-out:
-
-	cpufreq_cpu_put(policy);
-
-	return ret;
-}
-
-static int exynos_target(struct cpufreq_policy *policy,
-			  unsigned int target_freq,
-			  unsigned int relation)
-{
-	struct cpufreq_frequency_table *freq_table = exynos_info->freq_table;
-	unsigned int index;
-	unsigned int new_freq;
-	int ret = 0;
-
-	mutex_lock(&cpufreq_lock);
-
-	if (frequency_locked)
-		goto out;
-
-	if (cpufreq_frequency_table_target(policy, freq_table,
-					   target_freq, relation, &index)) {
-		ret = -EINVAL;
-		goto out;
-	}
-
-	new_freq = freq_table[index].frequency;
-
-	ret = exynos_cpufreq_scale(new_freq);
-
-out:
-	mutex_unlock(&cpufreq_lock);
-
-	return ret;
-}
-
-#ifdef CONFIG_PM
-static int exynos_cpufreq_suspend(struct cpufreq_policy *policy)
-{
-	return 0;
-}
-
-static int exynos_cpufreq_resume(struct cpufreq_policy *policy)
-{
-	return 0;
-}
-#endif
-
-/**
- * exynos_cpufreq_pm_notifier - block CPUFREQ's activities in suspend-resume
- *			context
- * @notifier
- * @pm_event
- * @v
- *
- * While frequency_locked == true, target() ignores every frequency but
- * locking_frequency. The locking_frequency value is the initial frequency,
- * which is set by the bootloader. In order to eliminate possible
- * inconsistency in clock values, we save and restore frequencies during
- * suspend and resume and block CPUFREQ activities. Note that the standard
- * suspend/resume cannot be used as they are too deep (syscore_ops) for
- * regulator actions.
- */
-static int exynos_cpufreq_pm_notifier(struct notifier_block *notifier,
-				       unsigned long pm_event, void *v)
-{
-	int ret;
-
-	switch (pm_event) {
-	case PM_SUSPEND_PREPARE:
-		mutex_lock(&cpufreq_lock);
-		frequency_locked = true;
-		mutex_unlock(&cpufreq_lock);
-
-		ret = exynos_cpufreq_scale(locking_frequency);
-		if (ret < 0)
-			return NOTIFY_BAD;
-
-		break;
-
-	case PM_POST_SUSPEND:
-		mutex_lock(&cpufreq_lock);
-		frequency_locked = false;
-		mutex_unlock(&cpufreq_lock);
-		break;
-	}
-
-	return NOTIFY_OK;
-}
-
-static struct notifier_block exynos_cpufreq_nb = {
-	.notifier_call = exynos_cpufreq_pm_notifier,
-};
-
-static int exynos_cpufreq_cpu_init(struct cpufreq_policy *policy)
-{
-	policy->cur = policy->min = policy->max = exynos_getspeed(policy->cpu);
-
-	cpufreq_frequency_table_get_attr(exynos_info->freq_table, policy->cpu);
-
-	/* set the transition latency value */
-	policy->cpuinfo.transition_latency = 100000;
-
-	cpumask_setall(policy->cpus);
-
-	return cpufreq_frequency_table_cpuinfo(policy, exynos_info->freq_table);
-}
-
-static int exynos_cpufreq_cpu_exit(struct cpufreq_policy *policy)
-{
-	cpufreq_frequency_table_put_attr(policy->cpu);
-	return 0;
-}
-
-static struct freq_attr *exynos_cpufreq_attr[] = {
-	&cpufreq_freq_attr_scaling_available_freqs,
-	NULL,
-};
-
-static struct cpufreq_driver exynos_driver = {
-	.flags		= CPUFREQ_STICKY,
-	.verify		= exynos_verify_speed,
-	.target		= exynos_target,
-	.get		= exynos_getspeed,
-	.init		= exynos_cpufreq_cpu_init,
-	.exit		= exynos_cpufreq_cpu_exit,
-	.name		= "exynos_cpufreq",
-	.attr		= exynos_cpufreq_attr,
-#ifdef CONFIG_PM
-	.suspend	= exynos_cpufreq_suspend,
-	.resume		= exynos_cpufreq_resume,
-#endif
-};
-
-static int __init exynos_cpufreq_init(void)
-{
-	int ret = -EINVAL;
-
-	exynos_info = kzalloc(sizeof(struct exynos_dvfs_info), GFP_KERNEL);
-	if (!exynos_info)
-		return -ENOMEM;
-
-	if (soc_is_exynos4210())
-		ret = exynos4210_cpufreq_init(exynos_info);
-	else if (soc_is_exynos4212() || soc_is_exynos4412())
-		ret = exynos4x12_cpufreq_init(exynos_info);
-	else if (soc_is_exynos5250())
-		ret = exynos5250_cpufreq_init(exynos_info);
-	else
-		return 0;
-
-	if (ret)
-		goto err_vdd_arm;
-
-	if (exynos_info->set_freq == NULL) {
-		pr_err("%s: No set_freq function (ERR)\n", __func__);
-		goto err_vdd_arm;
-	}
-
-	arm_regulator = regulator_get(NULL, "vdd_arm");
-	if (IS_ERR(arm_regulator)) {
-		pr_err("%s: failed to get resource vdd_arm\n", __func__);
-		goto err_vdd_arm;
-	}
-
-	locking_frequency = exynos_getspeed(0);
-
-	register_pm_notifier(&exynos_cpufreq_nb);
-
-	if (cpufreq_register_driver(&exynos_driver)) {
-		pr_err("%s: failed to register cpufreq driver\n", __func__);
-		goto err_cpufreq;
-	}
-
-	return 0;
-err_cpufreq:
-	unregister_pm_notifier(&exynos_cpufreq_nb);
-
-	regulator_put(arm_regulator);
-err_vdd_arm:
-	kfree(exynos_info);
-	pr_debug("%s: failed initialization\n", __func__);
-	return -EINVAL;
-}
-late_initcall(exynos_cpufreq_init);