1 files changed, 0 insertions, 296 deletions
diff --git a/ANDROID_3.4.5/drivers/cpufreq/exynos-cpufreq.c b/ANDROID_3.4.5/drivers/cpufreq/exynos-cpufreq.c
deleted file mode 100644
index b243a7ee..00000000
--- a/ANDROID_3.4.5/drivers/cpufreq/exynos-cpufreq.c
+++ /dev/null
@@ -1,296 +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 <mach/cpufreq.h>
-
-#include <plat/cpu.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);
-
-int exynos_verify_speed(struct cpufreq_policy *policy)
-{
-	return cpufreq_frequency_table_verify(policy,
-					      exynos_info->freq_table);
-}
-
-unsigned int exynos_getspeed(unsigned int cpu)
-{
-	return clk_get_rate(exynos_info->cpu_clk) / 1000;
-}
-
-static int exynos_target(struct cpufreq_policy *policy,
-			  unsigned int target_freq,
-			  unsigned int relation)
-{
-	unsigned int index, old_index;
-	unsigned int arm_volt, safe_arm_volt = 0;
-	int ret = 0;
-	struct cpufreq_frequency_table *freq_table = exynos_info->freq_table;
-	unsigned int *volt_table = exynos_info->volt_table;
-	unsigned int mpll_freq_khz = exynos_info->mpll_freq_khz;
-
-	mutex_lock(&cpufreq_lock);
-
-	freqs.old = policy->cur;
-
-	if (frequency_locked && target_freq != locking_frequency) {
-		ret = -EAGAIN;
-		goto out;
-	}
-
-	if (cpufreq_frequency_table_target(policy, freq_table,
-					   freqs.old, relation, &old_index)) {
-		ret = -EINVAL;
-		goto out;
-	}
-
-	if (cpufreq_frequency_table_target(policy, freq_table,
-					   target_freq, relation, &index)) {
-		ret = -EINVAL;
-		goto out;
-	}
-
-	freqs.new = freq_table[index].frequency;
-	freqs.cpu = policy->cpu;
-
-	/*
-	 * 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(&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 */
-		regulator_set_voltage(arm_regulator, arm_volt,
-				arm_volt);
-	}
-
-	if (safe_arm_volt)
-		regulator_set_voltage(arm_regulator, safe_arm_volt,
-				      safe_arm_volt);
-	if (freqs.new != freqs.old)
-		exynos_info->set_freq(old_index, index);
-
-	cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
-
-	/* 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);
-	}
-
-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)
-{
-	struct cpufreq_policy *policy = cpufreq_cpu_get(0); /* boot CPU */
-	static unsigned int saved_frequency;
-	unsigned int temp;
-
-	mutex_lock(&cpufreq_lock);
-	switch (pm_event) {
-	case PM_SUSPEND_PREPARE:
-		if (frequency_locked)
-			goto out;
-
-		frequency_locked = true;
-
-		if (locking_frequency) {
-			saved_frequency = exynos_getspeed(0);
-
-			mutex_unlock(&cpufreq_lock);
-			exynos_target(policy, locking_frequency,
-				      CPUFREQ_RELATION_H);
-			mutex_lock(&cpufreq_lock);
-		}
-		break;
-
-	case PM_POST_SUSPEND:
-		if (saved_frequency) {
-			/*
-			 * While frequency_locked, only locking_frequency
-			 * is valid for target(). In order to use
-			 * saved_frequency while keeping frequency_locked,
-			 * we temporarly overwrite locking_frequency.
-			 */
-			temp = locking_frequency;
-			locking_frequency = saved_frequency;
-
-			mutex_unlock(&cpufreq_lock);
-			exynos_target(policy, locking_frequency,
-				      CPUFREQ_RELATION_H);
-			mutex_lock(&cpufreq_lock);
-
-			locking_frequency = temp;
-		}
-		frequency_locked = false;
-		break;
-	}
-out:
-	mutex_unlock(&cpufreq_lock);
-
-	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);
-
-	locking_frequency = exynos_getspeed(0);
-
-	/* set the transition latency value */
-	policy->cpuinfo.transition_latency = 100000;
-
-	/*
-	 * EXYNOS4 multi-core processors has 2 cores
-	 * that the frequency cannot be set independently.
-	 * Each cpu is bound to the same speed.
-	 * So the affected cpu is all of the cpus.
-	 */
-	if (num_online_cpus() == 1) {
-		cpumask_copy(policy->related_cpus, cpu_possible_mask);
-		cpumask_copy(policy->cpus, cpu_online_mask);
-	} else {
-		cpumask_setall(policy->cpus);
-	}
-
-	return cpufreq_frequency_table_cpuinfo(policy, exynos_info->freq_table);
-}
-
-static struct cpufreq_driver exynos_driver = {
-	.flags		= CPUFREQ_STICKY,
-	.verify		= exynos_verify_speed,
-	.target		= exynos_target,
-	.get		= exynos_getspeed,
-	.init		= exynos_cpufreq_cpu_init,
-	.name		= "exynos_cpufreq",
-#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
-		pr_err("%s: CPU type not found\n", __func__);
-
-	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;
-	}
-
-	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);
-
-	if (!IS_ERR(arm_regulator))
-		regulator_put(arm_regulator);
-err_vdd_arm:
-	kfree(exynos_info);
-	pr_debug("%s: failed initialization\n", __func__);
-	return -EINVAL;
-}
-late_initcall(exynos_cpufreq_init);