Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 0 insertions, 542 deletions

diff --git a/ANDROID_3.4.5/drivers/cpufreq/s3c2416-cpufreq.c b/ANDROID_3.4.5/drivers/cpufreq/s3c2416-cpufreq.c
deleted file mode 100644
index 50d2f15a..00000000
--- a/ANDROID_3.4.5/drivers/cpufreq/s3c2416-cpufreq.c
+++ /dev/null
@@ -1,542 +0,0 @@
-/*
- * S3C2416/2450 CPUfreq Support
- *
- * Copyright 2011 Heiko Stuebner <heiko@sntech.de>
- *
- * based on s3c64xx_cpufreq.c
- *
- * Copyright 2009 Wolfson Microelectronics plc
- *
- * 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/types.h>
-#include <linux/init.h>
-#include <linux/cpufreq.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/regulator/consumer.h>
-#include <linux/reboot.h>
-#include <linux/module.h>
-
-static DEFINE_MUTEX(cpufreq_lock);
-
-struct s3c2416_data {
-	struct clk *armdiv;
-	struct clk *armclk;
-	struct clk *hclk;
-
-	unsigned long regulator_latency;
-#ifdef CONFIG_ARM_S3C2416_CPUFREQ_VCORESCALE
-	struct regulator *vddarm;
-#endif
-
-	struct cpufreq_frequency_table *freq_table;
-
-	bool is_dvs;
-	bool disable_dvs;
-};
-
-static struct s3c2416_data s3c2416_cpufreq;
-
-struct s3c2416_dvfs {
-	unsigned int vddarm_min;
-	unsigned int vddarm_max;
-};
-
-/* pseudo-frequency for dvs mode */
-#define FREQ_DVS	132333
-
-/* frequency to sleep and reboot in
- * it's essential to leave dvs, as some boards do not reconfigure the
- * regulator on reboot
- */
-#define FREQ_SLEEP	133333
-
-/* Sources for the ARMCLK */
-#define SOURCE_HCLK	0
-#define SOURCE_ARMDIV	1
-
-#ifdef CONFIG_ARM_S3C2416_CPUFREQ_VCORESCALE
-/* S3C2416 only supports changing the voltage in the dvs-mode.
- * Voltages down to 1.0V seem to work, so we take what the regulator
- * can get us.
- */
-static struct s3c2416_dvfs s3c2416_dvfs_table[] = {
-	[SOURCE_HCLK] = {  950000, 1250000 },
-	[SOURCE_ARMDIV] = { 1250000, 1350000 },
-};
-#endif
-
-static struct cpufreq_frequency_table s3c2416_freq_table[] = {
-	{ SOURCE_HCLK, FREQ_DVS },
-	{ SOURCE_ARMDIV, 133333 },
-	{ SOURCE_ARMDIV, 266666 },
-	{ SOURCE_ARMDIV, 400000 },
-	{ 0, CPUFREQ_TABLE_END },
-};
-
-static struct cpufreq_frequency_table s3c2450_freq_table[] = {
-	{ SOURCE_HCLK, FREQ_DVS },
-	{ SOURCE_ARMDIV, 133500 },
-	{ SOURCE_ARMDIV, 267000 },
-	{ SOURCE_ARMDIV, 534000 },
-	{ 0, CPUFREQ_TABLE_END },
-};
-
-static int s3c2416_cpufreq_verify_speed(struct cpufreq_policy *policy)
-{
-	struct s3c2416_data *s3c_freq = &s3c2416_cpufreq;
-
-	if (policy->cpu != 0)
-		return -EINVAL;
-
-	return cpufreq_frequency_table_verify(policy, s3c_freq->freq_table);
-}
-
-static unsigned int s3c2416_cpufreq_get_speed(unsigned int cpu)
-{
-	struct s3c2416_data *s3c_freq = &s3c2416_cpufreq;
-
-	if (cpu != 0)
-		return 0;
-
-	/* return our pseudo-frequency when in dvs mode */
-	if (s3c_freq->is_dvs)
-		return FREQ_DVS;
-
-	return clk_get_rate(s3c_freq->armclk) / 1000;
-}
-
-static int s3c2416_cpufreq_set_armdiv(struct s3c2416_data *s3c_freq,
-				      unsigned int freq)
-{
-	int ret;
-
-	if (clk_get_rate(s3c_freq->armdiv) / 1000 != freq) {
-		ret = clk_set_rate(s3c_freq->armdiv, freq * 1000);
-		if (ret < 0) {
-			pr_err("cpufreq: Failed to set armdiv rate %dkHz: %d\n",
-			       freq, ret);
-			return ret;
-		}
-	}
-
-	return 0;
-}
-
-static int s3c2416_cpufreq_enter_dvs(struct s3c2416_data *s3c_freq, int idx)
-{
-#ifdef CONFIG_ARM_S3C2416_CPUFREQ_VCORESCALE
-	struct s3c2416_dvfs *dvfs;
-#endif
-	int ret;
-
-	if (s3c_freq->is_dvs) {
-		pr_debug("cpufreq: already in dvs mode, nothing to do\n");
-		return 0;
-	}
-
-	pr_debug("cpufreq: switching armclk to hclk (%lukHz)\n",
-		 clk_get_rate(s3c_freq->hclk) / 1000);
-	ret = clk_set_parent(s3c_freq->armclk, s3c_freq->hclk);
-	if (ret < 0) {
-		pr_err("cpufreq: Failed to switch armclk to hclk: %d\n", ret);
-		return ret;
-	}
-
-#ifdef CONFIG_ARM_S3C2416_CPUFREQ_VCORESCALE
-	/* changing the core voltage is only allowed when in dvs mode */
-	if (s3c_freq->vddarm) {
-		dvfs = &s3c2416_dvfs_table[idx];
-
-		pr_debug("cpufreq: setting regultor to %d-%d\n",
-			 dvfs->vddarm_min, dvfs->vddarm_max);
-		ret = regulator_set_voltage(s3c_freq->vddarm,
-					    dvfs->vddarm_min,
-					    dvfs->vddarm_max);
-
-		/* when lowering the voltage failed, there is nothing to do */
-		if (ret != 0)
-			pr_err("cpufreq: Failed to set VDDARM: %d\n", ret);
-	}
-#endif
-
-	s3c_freq->is_dvs = 1;
-
-	return 0;
-}
-
-static int s3c2416_cpufreq_leave_dvs(struct s3c2416_data *s3c_freq, int idx)
-{
-#ifdef CONFIG_ARM_S3C2416_CPUFREQ_VCORESCALE
-	struct s3c2416_dvfs *dvfs;
-#endif
-	int ret;
-
-	if (!s3c_freq->is_dvs) {
-		pr_debug("cpufreq: not in dvs mode, so can't leave\n");
-		return 0;
-	}
-
-#ifdef CONFIG_ARM_S3C2416_CPUFREQ_VCORESCALE
-	if (s3c_freq->vddarm) {
-		dvfs = &s3c2416_dvfs_table[idx];
-
-		pr_debug("cpufreq: setting regultor to %d-%d\n",
-			 dvfs->vddarm_min, dvfs->vddarm_max);
-		ret = regulator_set_voltage(s3c_freq->vddarm,
-					    dvfs->vddarm_min,
-					    dvfs->vddarm_max);
-		if (ret != 0) {
-			pr_err("cpufreq: Failed to set VDDARM: %d\n", ret);
-			return ret;
-		}
-	}
-#endif
-
-	/* force armdiv to hclk frequency for transition from dvs*/
-	if (clk_get_rate(s3c_freq->armdiv) > clk_get_rate(s3c_freq->hclk)) {
-		pr_debug("cpufreq: force armdiv to hclk frequency (%lukHz)\n",
-			 clk_get_rate(s3c_freq->hclk) / 1000);
-		ret = s3c2416_cpufreq_set_armdiv(s3c_freq,
-					clk_get_rate(s3c_freq->hclk) / 1000);
-		if (ret < 0) {
-			pr_err("cpufreq: Failed to to set the armdiv to %lukHz: %d\n",
-			       clk_get_rate(s3c_freq->hclk) / 1000, ret);
-			return ret;
-		}
-	}
-
-	pr_debug("cpufreq: switching armclk parent to armdiv (%lukHz)\n",
-			clk_get_rate(s3c_freq->armdiv) / 1000);
-
-	ret = clk_set_parent(s3c_freq->armclk, s3c_freq->armdiv);
-	if (ret < 0) {
-		pr_err("cpufreq: Failed to switch armclk clock parent to armdiv: %d\n",
-		       ret);
-		return ret;
-	}
-
-	s3c_freq->is_dvs = 0;
-
-	return 0;
-}
-
-static int s3c2416_cpufreq_set_target(struct cpufreq_policy *policy,
-				      unsigned int target_freq,
-				      unsigned int relation)
-{
-	struct s3c2416_data *s3c_freq = &s3c2416_cpufreq;
-	struct cpufreq_freqs freqs;
-	int idx, ret, to_dvs = 0;
-	unsigned int i;
-
-	mutex_lock(&cpufreq_lock);
-
-	pr_debug("cpufreq: to %dKHz, relation %d\n", target_freq, relation);
-
-	ret = cpufreq_frequency_table_target(policy, s3c_freq->freq_table,
-					     target_freq, relation, &i);
-	if (ret != 0)
-		goto out;
-
-	idx = s3c_freq->freq_table[i].index;
-
-	if (idx == SOURCE_HCLK)
-		to_dvs = 1;
-
-	/* switching to dvs when it's not allowed */
-	if (to_dvs && s3c_freq->disable_dvs) {
-		pr_debug("cpufreq: entering dvs mode not allowed\n");
-		ret = -EINVAL;
-		goto out;
-	}
-
-	freqs.cpu = 0;
-	freqs.flags = 0;
-	freqs.old = s3c_freq->is_dvs ? FREQ_DVS
-				     : clk_get_rate(s3c_freq->armclk) / 1000;
-
-	/* When leavin dvs mode, always switch the armdiv to the hclk rate
-	 * The S3C2416 has stability issues when switching directly to
-	 * higher frequencies.
-	 */
-	freqs.new = (s3c_freq->is_dvs && !to_dvs)
-				? clk_get_rate(s3c_freq->hclk) / 1000
-				: s3c_freq->freq_table[i].frequency;
-
-	pr_debug("cpufreq: Transition %d-%dkHz\n", freqs.old, freqs.new);
-
-	if (!to_dvs && freqs.old == freqs.new)
-		goto out;
-
-	cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
-
-	if (to_dvs) {
-		pr_debug("cpufreq: enter dvs\n");
-		ret = s3c2416_cpufreq_enter_dvs(s3c_freq, idx);
-	} else if (s3c_freq->is_dvs) {
-		pr_debug("cpufreq: leave dvs\n");
-		ret = s3c2416_cpufreq_leave_dvs(s3c_freq, idx);
-	} else {
-		pr_debug("cpufreq: change armdiv to %dkHz\n", freqs.new);
-		ret = s3c2416_cpufreq_set_armdiv(s3c_freq, freqs.new);
-	}
-
-	cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
-
-out:
-	mutex_unlock(&cpufreq_lock);
-
-	return ret;
-}
-
-#ifdef CONFIG_ARM_S3C2416_CPUFREQ_VCORESCALE
-static void __init s3c2416_cpufreq_cfg_regulator(struct s3c2416_data *s3c_freq)
-{
-	int count, v, i, found;
-	struct cpufreq_frequency_table *freq;
-	struct s3c2416_dvfs *dvfs;
-
-	count = regulator_count_voltages(s3c_freq->vddarm);
-	if (count < 0) {
-		pr_err("cpufreq: Unable to check supported voltages\n");
-		return;
-	}
-
-	freq = s3c_freq->freq_table;
-	while (count > 0 && freq->frequency != CPUFREQ_TABLE_END) {
-		if (freq->frequency == CPUFREQ_ENTRY_INVALID)
-			continue;
-
-		dvfs = &s3c2416_dvfs_table[freq->index];
-		found = 0;
-
-		/* Check only the min-voltage, more is always ok on S3C2416 */
-		for (i = 0; i < count; i++) {
-			v = regulator_list_voltage(s3c_freq->vddarm, i);
-			if (v >= dvfs->vddarm_min)
-				found = 1;
-		}
-
-		if (!found) {
-			pr_debug("cpufreq: %dkHz unsupported by regulator\n",
-				 freq->frequency);
-			freq->frequency = CPUFREQ_ENTRY_INVALID;
-		}
-
-		freq++;
-	}
-
-	/* Guessed */
-	s3c_freq->regulator_latency = 1 * 1000 * 1000;
-}
-#endif
-
-static int s3c2416_cpufreq_reboot_notifier_evt(struct notifier_block *this,
-					       unsigned long event, void *ptr)
-{
-	struct s3c2416_data *s3c_freq = &s3c2416_cpufreq;
-	int ret;
-
-	mutex_lock(&cpufreq_lock);
-
-	/* disable further changes */
-	s3c_freq->disable_dvs = 1;
-
-	mutex_unlock(&cpufreq_lock);
-
-	/* some boards don't reconfigure the regulator on reboot, which
-	 * could lead to undervolting the cpu when the clock is reset.
-	 * Therefore we always leave the DVS mode on reboot.
-	 */
-	if (s3c_freq->is_dvs) {
-		pr_debug("cpufreq: leave dvs on reboot\n");
-		ret = cpufreq_driver_target(cpufreq_cpu_get(0), FREQ_SLEEP, 0);
-		if (ret < 0)
-			return NOTIFY_BAD;
-	}
-
-	return NOTIFY_DONE;
-}
-
-static struct notifier_block s3c2416_cpufreq_reboot_notifier = {
-	.notifier_call = s3c2416_cpufreq_reboot_notifier_evt,
-};
-
-static int __init s3c2416_cpufreq_driver_init(struct cpufreq_policy *policy)
-{
-	struct s3c2416_data *s3c_freq = &s3c2416_cpufreq;
-	struct cpufreq_frequency_table *freq;
-	struct clk *msysclk;
-	unsigned long rate;
-	int ret;
-
-	if (policy->cpu != 0)
-		return -EINVAL;
-
-	msysclk = clk_get(NULL, "msysclk");
-	if (IS_ERR(msysclk)) {
-		ret = PTR_ERR(msysclk);
-		pr_err("cpufreq: Unable to obtain msysclk: %d\n", ret);
-		return ret;
-	}
-
-	/*
-	 * S3C2416 and S3C2450 share the same processor-ID and also provide no
-	 * other means to distinguish them other than through the rate of
-	 * msysclk. On S3C2416 msysclk runs at 800MHz and on S3C2450 at 533MHz.
-	 */
-	rate = clk_get_rate(msysclk);
-	if (rate == 800 * 1000 * 1000) {
-		pr_info("cpufreq: msysclk running at %lukHz, using S3C2416 frequency table\n",
-			rate / 1000);
-		s3c_freq->freq_table = s3c2416_freq_table;
-		policy->cpuinfo.max_freq = 400000;
-	} else if (rate / 1000 == 534000) {
-		pr_info("cpufreq: msysclk running at %lukHz, using S3C2450 frequency table\n",
-			rate / 1000);
-		s3c_freq->freq_table = s3c2450_freq_table;
-		policy->cpuinfo.max_freq = 534000;
-	}
-
-	/* not needed anymore */
-	clk_put(msysclk);
-
-	if (s3c_freq->freq_table == NULL) {
-		pr_err("cpufreq: No frequency information for this CPU, msysclk at %lukHz\n",
-		       rate / 1000);
-		return -ENODEV;
-	}
-
-	s3c_freq->is_dvs = 0;
-
-	s3c_freq->armdiv = clk_get(NULL, "armdiv");
-	if (IS_ERR(s3c_freq->armdiv)) {
-		ret = PTR_ERR(s3c_freq->armdiv);
-		pr_err("cpufreq: Unable to obtain ARMDIV: %d\n", ret);
-		return ret;
-	}
-
-	s3c_freq->hclk = clk_get(NULL, "hclk");
-	if (IS_ERR(s3c_freq->hclk)) {
-		ret = PTR_ERR(s3c_freq->hclk);
-		pr_err("cpufreq: Unable to obtain HCLK: %d\n", ret);
-		goto err_hclk;
-	}
-
-	/* chech hclk rate, we only support the common 133MHz for now
-	 * hclk could also run at 66MHz, but this not often used
-	 */
-	rate = clk_get_rate(s3c_freq->hclk);
-	if (rate < 133 * 1000 * 1000) {
-		pr_err("cpufreq: HCLK not at 133MHz\n");
-		clk_put(s3c_freq->hclk);
-		ret = -EINVAL;
-		goto err_armclk;
-	}
-
-	s3c_freq->armclk = clk_get(NULL, "armclk");
-	if (IS_ERR(s3c_freq->armclk)) {
-		ret = PTR_ERR(s3c_freq->armclk);
-		pr_err("cpufreq: Unable to obtain ARMCLK: %d\n", ret);
-		goto err_armclk;
-	}
-
-#ifdef CONFIG_ARM_S3C2416_CPUFREQ_VCORESCALE
-	s3c_freq->vddarm = regulator_get(NULL, "vddarm");
-	if (IS_ERR(s3c_freq->vddarm)) {
-		ret = PTR_ERR(s3c_freq->vddarm);
-		pr_err("cpufreq: Failed to obtain VDDARM: %d\n", ret);
-		goto err_vddarm;
-	}
-
-	s3c2416_cpufreq_cfg_regulator(s3c_freq);
-#else
-	s3c_freq->regulator_latency = 0;
-#endif
-
-	freq = s3c_freq->freq_table;
-	while (freq->frequency != CPUFREQ_TABLE_END) {
-		/* special handling for dvs mode */
-		if (freq->index == 0) {
-			if (!s3c_freq->hclk) {
-				pr_debug("cpufreq: %dkHz unsupported as it would need unavailable dvs mode\n",
-					 freq->frequency);
-				freq->frequency = CPUFREQ_ENTRY_INVALID;
-			} else {
-				freq++;
-				continue;
-			}
-		}
-
-		/* Check for frequencies we can generate */
-		rate = clk_round_rate(s3c_freq->armdiv,
-				      freq->frequency * 1000);
-		rate /= 1000;
-		if (rate != freq->frequency) {
-			pr_debug("cpufreq: %dkHz unsupported by clock (clk_round_rate return %lu)\n",
-				 freq->frequency, rate);
-			freq->frequency = CPUFREQ_ENTRY_INVALID;
-		}
-
-		freq++;
-	}
-
-	policy->cur = clk_get_rate(s3c_freq->armclk) / 1000;
-
-	/* Datasheet says PLL stabalisation time must be at least 300us,
-	 * so but add some fudge. (reference in LOCKCON0 register description)
-	 */
-	policy->cpuinfo.transition_latency = (500 * 1000) +
-					     s3c_freq->regulator_latency;
-
-	ret = cpufreq_frequency_table_cpuinfo(policy, s3c_freq->freq_table);
-	if (ret)
-		goto err_freq_table;
-
-	cpufreq_frequency_table_get_attr(s3c_freq->freq_table, 0);
-
-	register_reboot_notifier(&s3c2416_cpufreq_reboot_notifier);
-
-	return 0;
-
-err_freq_table:
-#ifdef CONFIG_ARM_S3C2416_CPUFREQ_VCORESCALE
-	regulator_put(s3c_freq->vddarm);
-err_vddarm:
-#endif
-	clk_put(s3c_freq->armclk);
-err_armclk:
-	clk_put(s3c_freq->hclk);
-err_hclk:
-	clk_put(s3c_freq->armdiv);
-
-	return ret;
-}
-
-static struct freq_attr *s3c2416_cpufreq_attr[] = {
-	&cpufreq_freq_attr_scaling_available_freqs,
-	NULL,
-};
-
-static struct cpufreq_driver s3c2416_cpufreq_driver = {
-	.owner		= THIS_MODULE,
-	.flags          = 0,
-	.verify		= s3c2416_cpufreq_verify_speed,
-	.target		= s3c2416_cpufreq_set_target,
-	.get		= s3c2416_cpufreq_get_speed,
-	.init		= s3c2416_cpufreq_driver_init,
-	.name		= "s3c2416",
-	.attr		= s3c2416_cpufreq_attr,
-};
-
-static int __init s3c2416_cpufreq_init(void)
-{
-	return cpufreq_register_driver(&s3c2416_cpufreq_driver);
-}
-module_init(s3c2416_cpufreq_init);