Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq: (23 commits)
  [CPUFREQ] EXYNOS: Removed useless headers and codes
  [CPUFREQ] EXYNOS: Make EXYNOS common cpufreq driver
  [CPUFREQ] powernow-k8: Update copyright, maintainer and documentation information
  [CPUFREQ] powernow-k8: Fix indexing issue
  [CPUFREQ] powernow-k8: Avoid Pstate MSR accesses on systems supporting CPB
  [CPUFREQ] update lpj only if frequency has changed
  [CPUFREQ] cpufreq:userspace: fix cpu_cur_freq updation
  [CPUFREQ] Remove wall variable from cpufreq_gov_dbs_init()
  [CPUFREQ] EXYNOS4210: cpufreq code is changed for stable working
  [CPUFREQ] EXYNOS4210: Update frequency table for cpu divider
  [CPUFREQ] EXYNOS4210: Remove code about bus on cpufreq
  [CPUFREQ] s3c64xx: Use pr_fmt() for consistent log messages
  cpufreq: OMAP: fixup for omap_device changes, include <linux/module.h>
  cpufreq: OMAP: fix freq_table leak
  cpufreq: OMAP: put clk if cpu_init failed
  cpufreq: OMAP: only supports OPP library
  cpufreq: OMAP: dont support !freq_table
  cpufreq: OMAP: deny initialization if no mpudev
  cpufreq: OMAP: move clk name decision to init
  cpufreq: OMAP: notify even with bad boot frequency
  ...

arch/arm/mach-exynos/include/mach/cpufreq.h

+/* linux/arch/arm/mach-exynos/include/mach/cpufreq.h
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com
+ *
+ * EXYNOS - CPUFreq support
+ *
+ * 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.
+*/
+
+enum cpufreq_level_index {
+	L0, L1, L2, L3, L4,
+	L5, L6, L7, L8, L9,
+	L10, L11, L12, L13, L14,
+	L15, L16, L17, L18, L19,
+	L20,
+};
+
+struct exynos_dvfs_info {
+	unsigned long	mpll_freq_khz;
+	unsigned int	pll_safe_idx;
+	unsigned int	pm_lock_idx;
+	unsigned int	max_support_idx;
+	unsigned int	min_support_idx;
+	struct clk	*cpu_clk;
+	unsigned int	*volt_table;
+	struct cpufreq_frequency_table	*freq_table;
+	void (*set_freq)(unsigned int, unsigned int);
+	bool (*need_apll_change)(unsigned int, unsigned int);
+};
+
+extern int exynos4210_cpufreq_init(struct exynos_dvfs_info *);

drivers/cpufreq/Kconfig.arm

@@ -21,12 +21,19 @@ config ARM_S5PV210_CPUFREQ
 
 	  If in doubt, say N.
 
+config ARM_EXYNOS_CPUFREQ
+	bool "SAMSUNG EXYNOS SoCs"
+	depends on ARCH_EXYNOS
+	select ARM_EXYNOS4210_CPUFREQ if CPU_EXYNOS4210
+	default y
+	help
+	  This adds the CPUFreq driver common part for Samsung
+	  EXYNOS SoCs.
+
+	  If in doubt, say N.
+
 config ARM_EXYNOS4210_CPUFREQ
 	bool "Samsung EXYNOS4210"
-	depends on CPU_EXYNOS4210
-	default y
 	help
 	  This adds the CPUFreq driver for Samsung EXYNOS4210
 	  SoC (S5PV310 or S5PC210).
-
-	  If in doubt, say N.

drivers/cpufreq/Makefile

@@ -42,7 +42,9 @@ obj-$(CONFIG_X86_CPUFREQ_NFORCE2)	+= cpufreq-nforce2.o
 obj-$(CONFIG_UX500_SOC_DB8500)		+= db8500-cpufreq.o
 obj-$(CONFIG_ARM_S3C64XX_CPUFREQ)	+= s3c64xx-cpufreq.o
 obj-$(CONFIG_ARM_S5PV210_CPUFREQ)	+= s5pv210-cpufreq.o
+obj-$(CONFIG_ARM_EXYNOS_CPUFREQ)	+= exynos-cpufreq.o
 obj-$(CONFIG_ARM_EXYNOS4210_CPUFREQ)	+= exynos4210-cpufreq.o
+obj-$(CONFIG_ARCH_OMAP2PLUS)            += omap-cpufreq.o
 
 ##################################################################################
 # PowerPC platform drivers

drivers/cpufreq/cpufreq.c

@@ -204,8 +204,7 @@ static void adjust_jiffies(unsigned long val, struct cpufreq_freqs *ci)
 		pr_debug("saving %lu as reference value for loops_per_jiffy; "
 			"freq is %u kHz\n", l_p_j_ref, l_p_j_ref_freq);
 	}
-	if ((val == CPUFREQ_PRECHANGE  && ci->old < ci->new) ||
-	    (val == CPUFREQ_POSTCHANGE && ci->old > ci->new) ||
+	if ((val == CPUFREQ_POSTCHANGE  && ci->old != ci->new) ||
 	    (val == CPUFREQ_RESUMECHANGE || val == CPUFREQ_SUSPENDCHANGE)) {
 		loops_per_jiffy = cpufreq_scale(l_p_j_ref, l_p_j_ref_freq,
 								ci->new);

drivers/cpufreq/cpufreq_ondemand.c

@@ -713,11 +713,10 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy,
 
 static int __init cpufreq_gov_dbs_init(void)
 {
-	cputime64_t wall;
 	u64 idle_time;
 	int cpu = get_cpu();
 
-	idle_time = get_cpu_idle_time_us(cpu, &wall);
+	idle_time = get_cpu_idle_time_us(cpu, NULL);
 	put_cpu();
 	if (idle_time != -1ULL) {
 		/* Idle micro accounting is supported. Use finer thresholds */

drivers/cpufreq/cpufreq_userspace.c

@@ -47,9 +47,11 @@ userspace_cpufreq_notifier(struct notifier_block *nb, unsigned long val,
 	if (!per_cpu(cpu_is_managed, freq->cpu))
 		return 0;
 
-	pr_debug("saving cpu_cur_freq of cpu %u to be %u kHz\n",
-			freq->cpu, freq->new);
-	per_cpu(cpu_cur_freq, freq->cpu) = freq->new;
+	if (val == CPUFREQ_POSTCHANGE) {
+		pr_debug("saving cpu_cur_freq of cpu %u to be %u kHz\n",
+				freq->cpu, freq->new);
+		per_cpu(cpu_cur_freq, freq->cpu) = freq->new;
+	}
 
 	return 0;
 }

drivers/cpufreq/exynos-cpufreq.c

+/*
+ * 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);
+
+	/* 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
+		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);

arch/arm/plat-omap/cpu-omap.c → drivers/cpufreq/omap-cpufreq.c

 /*
- *  linux/arch/arm/plat-omap/cpu-omap.c
- *
- *  CPU frequency scaling for OMAP
+ *  CPU frequency scaling for OMAP using OPP information
  *
  *  Copyright (C) 2005 Nokia Corporation
  *  Written by Tony Lindgren <tony@atomide.com>
  *
  *  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
+ *
  * 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.
@@ -21,48 +22,49 @@
 #include <linux/err.h>
 #include <linux/clk.h>
 #include <linux/io.h>
+#include <linux/opp.h>
+#include <linux/cpu.h>
+#include <linux/module.h>
 
-#include <mach/hardware.h>
-#include <plat/clock.h>
 #include <asm/system.h>
+#include <asm/smp_plat.h>
+#include <asm/cpu.h>
 
-#define VERY_HI_RATE	900000000
+#include <plat/clock.h>
+#include <plat/omap-pm.h>
+#include <plat/common.h>
+#include <plat/omap_device.h>
 
-static struct cpufreq_frequency_table *freq_table;
+#include <mach/hardware.h>
 
-#ifdef CONFIG_ARCH_OMAP1
-#define MPU_CLK		"mpu"
-#else
-#define MPU_CLK		"virt_prcm_set"
+#ifdef CONFIG_SMP
+struct lpj_info {
+	unsigned long	ref;
+	unsigned int	freq;
+};
+
+static DEFINE_PER_CPU(struct lpj_info, lpj_ref);
+static struct lpj_info global_lpj_ref;
 #endif
 
+static struct cpufreq_frequency_table *freq_table;
+static atomic_t freq_table_users = ATOMIC_INIT(0);
 static struct clk *mpu_clk;
-
-/* TODO: Add support for SDRAM timing changes */
+static char *mpu_clk_name;
+static struct device *mpu_dev;
 
 static int omap_verify_speed(struct cpufreq_policy *policy)
 {
-	if (freq_table)
-		return cpufreq_frequency_table_verify(policy, freq_table);
-
-	if (policy->cpu)
+	if (!freq_table)
 		return -EINVAL;
-
-	cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
-				     policy->cpuinfo.max_freq);
-
-	policy->min = clk_round_rate(mpu_clk, policy->min * 1000) / 1000;
-	policy->max = clk_round_rate(mpu_clk, policy->max * 1000) / 1000;
-	cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
-				     policy->cpuinfo.max_freq);
-	return 0;
+	return cpufreq_frequency_table_verify(policy, freq_table);
 }
 
 static unsigned int omap_getspeed(unsigned int cpu)
 {
 	unsigned long rate;
 
-	if (cpu)
+	if (cpu >= NR_CPUS)
 		return 0;
 
 	rate = clk_get_rate(mpu_clk) / 1000;
@@ -73,68 +75,151 @@ static int omap_target(struct cpufreq_policy *policy,
 		       unsigned int target_freq,
 		       unsigned int relation)
 {
-	struct cpufreq_freqs freqs;
+	unsigned int i;
 	int ret = 0;
+	struct cpufreq_freqs freqs;
 
-	/* Ensure desired rate is within allowed range.  Some govenors
-	 * (ondemand) will just pass target_freq=0 to get the minimum. */
-	if (target_freq < policy->min)
-		target_freq = policy->min;
-	if (target_freq > policy->max)
-		target_freq = policy->max;
+	if (!freq_table) {
+		dev_err(mpu_dev, "%s: cpu%d: no freq table!\n", __func__,
+				policy->cpu);
+		return -EINVAL;
+	}
+
+	ret = cpufreq_frequency_table_target(policy, freq_table, target_freq,
+			relation, &i);
+	if (ret) {
+		dev_dbg(mpu_dev, "%s: cpu%d: no freq match for %d(ret=%d)\n",
+			__func__, policy->cpu, target_freq, ret);
+		return ret;
+	}
+	freqs.new = freq_table[i].frequency;
+	if (!freqs.new) {
+		dev_err(mpu_dev, "%s: cpu%d: no match for freq %d\n", __func__,
+			policy->cpu, target_freq);
+		return -EINVAL;
+	}
 
-	freqs.old = omap_getspeed(0);
-	freqs.new = clk_round_rate(mpu_clk, target_freq * 1000) / 1000;
-	freqs.cpu = 0;
+	freqs.old = omap_getspeed(policy->cpu);
+	freqs.cpu = policy->cpu;
 
-	if (freqs.old == freqs.new)
+	if (freqs.old == freqs.new && policy->cur == freqs.new)
 		return ret;
 
-	cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
+	/* notifiers */
+	for_each_cpu(i, policy->cpus) {
+		freqs.cpu = i;
+		cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
+	}
+
 #ifdef CONFIG_CPU_FREQ_DEBUG
-	printk(KERN_DEBUG "cpufreq-omap: transition: %u --> %u\n",
-	       freqs.old, freqs.new);
+	pr_info("cpufreq-omap: transition: %u --> %u\n", freqs.old, freqs.new);
 #endif
+
 	ret = clk_set_rate(mpu_clk, freqs.new * 1000);
-	cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
+	freqs.new = omap_getspeed(policy->cpu);
+
+#ifdef CONFIG_SMP
+	/*
+	 * Note that loops_per_jiffy is not updated on SMP systems in
+	 * cpufreq driver. So, update the per-CPU loops_per_jiffy value
+	 * on frequency transition. We need to update all dependent CPUs.
+	 */
+	for_each_cpu(i, policy->cpus) {
+		struct lpj_info *lpj = &per_cpu(lpj_ref, i);
+		if (!lpj->freq) {
+			lpj->ref = per_cpu(cpu_data, i).loops_per_jiffy;
+			lpj->freq = freqs.old;
+		}
+
+		per_cpu(cpu_data, i).loops_per_jiffy =
+			cpufreq_scale(lpj->ref, lpj->freq, freqs.new);
+	}
+
+	/* And don't forget to adjust the global one */
+	if (!global_lpj_ref.freq) {
+		global_lpj_ref.ref = loops_per_jiffy;
+		global_lpj_ref.freq = freqs.old;
+	}
+	loops_per_jiffy = cpufreq_scale(global_lpj_ref.ref, global_lpj_ref.freq,
+					freqs.new);
+#endif
+
+	/* notifiers */
+	for_each_cpu(i, policy->cpus) {
+		freqs.cpu = i;
+		cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
+	}
 
 	return ret;
 }
 
+static inline void freq_table_free(void)
+{
+	if (atomic_dec_and_test(&freq_table_users))
+		opp_free_cpufreq_table(mpu_dev, &freq_table);
+}
+
 static int __cpuinit omap_cpu_init(struct cpufreq_policy *policy)
 {
 	int result = 0;
 
-	mpu_clk = clk_get(NULL, MPU_CLK);
+	mpu_clk = clk_get(NULL, mpu_clk_name);
 	if (IS_ERR(mpu_clk))
 		return PTR_ERR(mpu_clk);
 
-	if (policy->cpu != 0)
-		return -EINVAL;
+	if (policy->cpu >= NR_CPUS) {
+		result = -EINVAL;
+		goto fail_ck;
+	}
+
+	policy->cur = policy->min = policy->max = omap_getspeed(policy->cpu);
+
+	if (atomic_inc_return(&freq_table_users) == 1)
+		result = opp_init_cpufreq_table(mpu_dev, &freq_table);
+
+	if (result) {
+		dev_err(mpu_dev, "%s: cpu%d: failed creating freq table[%d]\n",
+				__func__, policy->cpu, result);
+		goto fail_ck;
+	}
 
-	policy->cur = policy->min = policy->max = omap_getspeed(0);
-
-	clk_init_cpufreq_table(&freq_table);
-	if (freq_table) {
-		result = cpufreq_frequency_table_cpuinfo(policy, freq_table);
-		if (!result)
-			cpufreq_frequency_table_get_attr(freq_table,
-							policy->cpu);
-	} else {
-		policy->cpuinfo.min_freq = clk_round_rate(mpu_clk, 0) / 1000;
-		policy->cpuinfo.max_freq = clk_round_rate(mpu_clk,
-							VERY_HI_RATE) / 1000;
+	result = cpufreq_frequency_table_cpuinfo(policy, freq_table);
+	if (result)
+		goto fail_table;
+
+	cpufreq_frequency_table_get_attr(freq_table, policy->cpu);
+
+	policy->min = policy->cpuinfo.min_freq;
+	policy->max = policy->cpuinfo.max_freq;
+	policy->cur = omap_getspeed(policy->cpu);
+
+	/*
+	 * On OMAP SMP configuartion, both processors share the voltage
+	 * and clock. So both CPUs needs to be scaled together and hence
+	 * needs software co-ordination. Use cpufreq affected_cpus
+	 * interface to handle this scenario. Additional is_smp() check
+	 * is to keep SMP_ON_UP build working.
+	 */
+	if (is_smp()) {
+		policy->shared_type = CPUFREQ_SHARED_TYPE_ANY;
+		cpumask_setall(policy->cpus);
 	}
 
 	/* FIXME: what's the actual transition time? */
 	policy->cpuinfo.transition_latency = 300 * 1000;
 
 	return 0;
+
+fail_table:
+	freq_table_free();
+fail_ck:
+	clk_put(mpu_clk);
+	return result;
 }
 
 static int omap_cpu_exit(struct cpufreq_policy *policy)
 {
-	clk_exit_cpufreq_table(&freq_table);
+	freq_table_free();
 	clk_put(mpu_clk);
 	return 0;
 }
@@ -157,15 +242,33 @@ static struct cpufreq_driver omap_driver = {
 
 static int __init omap_cpufreq_init(void)
 {
+	if (cpu_is_omap24xx())
+		mpu_clk_name = "virt_prcm_set";
+	else if (cpu_is_omap34xx())
+		mpu_clk_name = "dpll1_ck";
+	else if (cpu_is_omap44xx())
+		mpu_clk_name = "dpll_mpu_ck";
+
+	if (!mpu_clk_name) {
+		pr_err("%s: unsupported Silicon?\n", __func__);
+		return -EINVAL;
+	}
+
+	mpu_dev = omap_device_get_by_hwmod_name("mpu");
+	if (!mpu_dev) {
+		pr_warning("%s: unable to get the mpu device\n", __func__);
+		return -EINVAL;
+	}
+
 	return cpufreq_register_driver(&omap_driver);
 }
 
-arch_initcall(omap_cpufreq_init);
-
-/*
- * if ever we want to remove this, upon cleanup call:
- *
- * cpufreq_unregister_driver()
- * cpufreq_frequency_table_put_attr()
- */
+static void __exit omap_cpufreq_exit(void)
+{
+	cpufreq_unregister_driver(&omap_driver);
+}
 
+MODULE_DESCRIPTION("cpufreq driver for OMAP SoCs");
+MODULE_LICENSE("GPL");
+module_init(omap_cpufreq_init);
+module_exit(omap_cpufreq_exit);

drivers/cpufreq/powernow-k8.c

 /*
- *   (c) 2003-2010 Advanced Micro Devices, Inc.
+ *   (c) 2003-2012 Advanced Micro Devices, Inc.
  *  Your use of this code is subject to the terms and conditions of the
  *  GNU general public license version 2. See "COPYING" or
  *  http://www.gnu.org/licenses/gpl.html
  *
- *  Support : mark.langsdorf@amd.com
+ *  Maintainer:
+ *  Andreas Herrmann <andreas.herrmann3@amd.com>
  *
  *  Based on the powernow-k7.c module written by Dave Jones.
  *  (C) 2003 Dave Jones on behalf of SuSE Labs
@@ -16,12 +17,14 @@
  *  Valuable input gratefully received from Dave Jones, Pavel Machek,
  *  Dominik Brodowski, Jacob Shin, and others.
  *  Originally developed by Paul Devriendt.
- *  Processor information obtained from Chapter 9 (Power and Thermal Management)
- *  of the "BIOS and Kernel Developer's Guide for the AMD Athlon 64 and AMD
- *  Opteron Processors" available for download from www.amd.com
  *
- *  Tables for specific CPUs can be inferred from
- *     http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/30430.pdf
+ *  Processor information obtained from Chapter 9 (Power and Thermal
+ *  Management) of the "BIOS and Kernel Developer's Guide (BKDG) for
+ *  the AMD Athlon 64 and AMD Opteron Processors" and section "2.x
+ *  Power Management" in BKDGs for newer AMD CPU families.
+ *
+ *  Tables for specific CPUs can be inferred from AMD's processor
+ *  power and thermal data sheets, (e.g. 30417.pdf, 30430.pdf, 43375.pdf)
  */
 
 #include <linux/kernel.h>
@@ -54,6 +57,9 @@ static DEFINE_PER_CPU(struct powernow_k8_data *, powernow_data);
 
 static int cpu_family = CPU_OPTERON;
 
+/* array to map SW pstate number to acpi state */
+static u32 ps_to_as[8];
+
 /* core performance boost */
 static bool cpb_capable, cpb_enabled;
 static struct msr __percpu *msrs;
@@ -80,9 +86,9 @@ static u32 find_khz_freq_from_fid(u32 fid)
 }
 
 static u32 find_khz_freq_from_pstate(struct cpufreq_frequency_table *data,
-		u32 pstate)
+				     u32 pstate)
 {
-	return data[pstate].frequency;
+	return data[ps_to_as[pstate]].frequency;
 }
 
 /* Return the vco fid for an input fid
@@ -926,23 +932,27 @@ static int fill_powernow_table_pstate(struct powernow_k8_data *data,
 			invalidate_entry(powernow_table, i);
 			continue;
 		}
-		rdmsr(MSR_PSTATE_DEF_BASE + index, lo, hi);
-		if (!(hi & HW_PSTATE_VALID_MASK)) {
-			pr_debug("invalid pstate %d, ignoring\n", index);
-			invalidate_entry(powernow_table, i);
-			continue;
-		}
 
-		powernow_table[i].index = index;
+		ps_to_as[index] = i;
 
 		/* Frequency may be rounded for these */
 		if ((boot_cpu_data.x86 == 0x10 && boot_cpu_data.x86_model < 10)
 				 || boot_cpu_data.x86 == 0x11) {
+
+			rdmsr(MSR_PSTATE_DEF_BASE + index, lo, hi);
+			if (!(hi & HW_PSTATE_VALID_MASK)) {
+				pr_debug("invalid pstate %d, ignoring\n", index);
+				invalidate_entry(powernow_table, i);
+				continue;
+			}
+
 			powernow_table[i].frequency =
 				freq_from_fid_did(lo & 0x3f, (lo >> 6) & 7);
 		} else
 			powernow_table[i].frequency =
 				data->acpi_data.states[i].core_frequency * 1000;
+
+		powernow_table[i].index = index;
 	}
 	return 0;
 }
@@ -1189,7 +1199,8 @@ static int powernowk8_target(struct cpufreq_policy *pol,
 	powernow_k8_acpi_pst_values(data, newstate);
 
 	if (cpu_family == CPU_HW_PSTATE)
-		ret = transition_frequency_pstate(data, newstate);
+		ret = transition_frequency_pstate(data,
+			data->powernow_table[newstate].index);
 	else
 		ret = transition_frequency_fidvid(data, newstate);
 	if (ret) {
@@ -1202,7 +1213,7 @@ static int powernowk8_target(struct cpufreq_policy *pol,
 
 	if (cpu_family == CPU_HW_PSTATE)
 		pol->cur = find_khz_freq_from_pstate(data->powernow_table,
-				newstate);
+				data->powernow_table[newstate].index);
 	else
 		pol->cur = find_khz_freq_from_fid(data->currfid);
 	ret = 0;

drivers/cpufreq/s3c64xx-cpufreq.c

@@ -8,6 +8,8 @@
  * published by the Free Software Foundation.
  */
 
+#define pr_fmt(fmt) "cpufreq: " fmt
+
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/init.h>
@@ -91,7 +93,7 @@ static int s3c64xx_cpufreq_set_target(struct cpufreq_policy *policy,
 	if (freqs.old == freqs.new)
 		return 0;
 
-	pr_debug("cpufreq: Transition %d-%dkHz\n", freqs.old, freqs.new);
+	pr_debug("Transition %d-%dkHz\n", freqs.old, freqs.new);
 
 	cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
 
@@ -101,7 +103,7 @@ static int s3c64xx_cpufreq_set_target(struct cpufreq_policy *policy,
 					    dvfs->vddarm_min,
 					    dvfs->vddarm_max);
 		if (ret != 0) {
-			pr_err("cpufreq: Failed to set VDDARM for %dkHz: %d\n",
+			pr_err("Failed to set VDDARM for %dkHz: %d\n",
 			       freqs.new, ret);
 			goto err;
 		}
@@ -110,7 +112,7 @@ static int s3c64xx_cpufreq_set_target(struct cpufreq_policy *policy,
 
 	ret = clk_set_rate(armclk, freqs.new * 1000);
 	if (ret < 0) {
-		pr_err("cpufreq: Failed to set rate %dkHz: %d\n",
+		pr_err("Failed to set rate %dkHz: %d\n",
 		       freqs.new, ret);
 		goto err;
 	}
@@ -123,14 +125,14 @@ static int s3c64xx_cpufreq_set_target(struct cpufreq_policy *policy,
 					    dvfs->vddarm_min,
 					    dvfs->vddarm_max);
 		if (ret != 0) {
-			pr_err("cpufreq: Failed to set VDDARM for %dkHz: %d\n",
+			pr_err("Failed to set VDDARM for %dkHz: %d\n",
 			       freqs.new, ret);
 			goto err_clk;
 		}
 	}
 #endif
 
-	pr_debug("cpufreq: Set actual frequency %lukHz\n",
+	pr_debug("Set actual frequency %lukHz\n",
 		 clk_get_rate(armclk) / 1000);
 
 	return 0;
@@ -153,7 +155,7 @@ static void __init s3c64xx_cpufreq_config_regulator(void)
 
 	count = regulator_count_voltages(vddarm);
 	if (count < 0) {
-		pr_err("cpufreq: Unable to check supported voltages\n");
+		pr_err("Unable to check supported voltages\n");
 	}
 
 	freq = s3c64xx_freq_table;
@@ -171,7 +173,7 @@ static void __init s3c64xx_cpufreq_config_regulator(void)
 		}
 
 		if (!found) {
-			pr_debug("cpufreq: %dkHz unsupported by regulator\n",
+			pr_debug("%dkHz unsupported by regulator\n",
 				 freq->frequency);
 			freq->frequency = CPUFREQ_ENTRY_INVALID;
 		}
@@ -194,13 +196,13 @@ static int s3c64xx_cpufreq_driver_init(struct cpufreq_policy *policy)
 		return -EINVAL;
 
 	if (s3c64xx_freq_table == NULL) {
-		pr_err("cpufreq: No frequency information for this CPU\n");
+		pr_err("No frequency information for this CPU\n");
 		return -ENODEV;
 	}
 
 	armclk = clk_get(NULL, "armclk");
 	if (IS_ERR(armclk)) {
-		pr_err("cpufreq: Unable to obtain ARMCLK: %ld\n",
+		pr_err("Unable to obtain ARMCLK: %ld\n",
 		       PTR_ERR(armclk));
 		return PTR_ERR(armclk);
 	}
@@ -209,12 +211,19 @@ static int s3c64xx_cpufreq_driver_init(struct cpufreq_policy *policy)
 	vddarm = regulator_get(NULL, "vddarm");
 	if (IS_ERR(vddarm)) {
 		ret = PTR_ERR(vddarm);
-		pr_err("cpufreq: Failed to obtain VDDARM: %d\n", ret);
-		pr_err("cpufreq: Only frequency scaling available\n");
+		pr_err("Failed to obtain VDDARM: %d\n", ret);
+		pr_err("Only frequency scaling available\n");
 		vddarm = NULL;
 	} else {
 		s3c64xx_cpufreq_config_regulator();
 	}
+
+	vddint = regulator_get(NULL, "vddint");
+	if (IS_ERR(vddint)) {
+		ret = PTR_ERR(vddint);
+		pr_err("Failed to obtain VDDINT: %d\n", ret);
+		vddint = NULL;
+	}
 #endif
 
 	freq = s3c64xx_freq_table;
@@ -225,7 +234,7 @@ static int s3c64xx_cpufreq_driver_init(struct cpufreq_policy *policy)
 		r = clk_round_rate(armclk, freq->frequency * 1000);
 		r /= 1000;
 		if (r != freq->frequency) {
-			pr_debug("cpufreq: %dkHz unsupported by clock\n",
+			pr_debug("%dkHz unsupported by clock\n",
 				 freq->frequency);
 			freq->frequency = CPUFREQ_ENTRY_INVALID;
 		}
@@ -248,7 +257,7 @@ static int s3c64xx_cpufreq_driver_init(struct cpufreq_policy *policy)
 
 	ret = cpufreq_frequency_table_cpuinfo(policy, s3c64xx_freq_table);
 	if (ret != 0) {
-		pr_err("cpufreq: Failed to configure frequency table: %d\n",
+		pr_err("Failed to configure frequency table: %d\n",
 		       ret);
 		regulator_put(vddarm);
 		clk_put(armclk);