Merge tag 'pm+acpi-3.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management and ACPI updates from Rafael J Wysocki:

 - ARM big.LITTLE cpufreq driver from Viresh Kumar.

 - exynos5440 cpufreq driver from Amit Daniel Kachhap.

 - cpufreq core cleanup and code consolidation from Viresh Kumar and
   Stratos Karafotis.

 - cpufreq scalability improvement from Nathan Zimmer.

 - AMD "frequency sensitivity feedback" powersave bias for the ondemand
   cpufreq governor from Jacob Shin.

 - cpuidle code consolidation and cleanups from Daniel Lezcano.

 - ARM OMAP cpuidle fixes from Santosh Shilimkar and Daniel Lezcano.

 - ACPICA fixes and other improvements from Bob Moore, Jung-uk Kim, Lv
   Zheng, Yinghai Lu, Tang Chen, Colin Ian King, and Linn Crosetto.

 - ACPI core updates related to hotplug from Toshi Kani, Paul Bolle,
   Yasuaki Ishimatsu, and Rafael J Wysocki.

 - Intel Lynxpoint LPSS (Low-Power Subsystem) support improvements from
   Rafael J Wysocki and Andy Shevchenko.

* tag 'pm+acpi-3.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (192 commits)
  cpufreq: Revert incorrect commit 5800043
  cpufreq: MAINTAINERS: Add co-maintainer
  cpuidle: add maintainer entry
  ACPI / thermal: do not always return THERMAL_TREND_RAISING for active trip points
  ARM: s3c64xx: cpuidle: use init/exit common routine
  cpufreq: pxa2xx: initialize variables
  ACPI: video: correct acpi_video_bus_add error processing
  SH: cpuidle: use init/exit common routine
  ARM: S5pv210: compiling issue, ARM_S5PV210_CPUFREQ needs CONFIG_CPU_FREQ_TABLE=y
  ACPI: Fix wrong parameter passed to memblock_reserve
  cpuidle: fix comment format
  pnp: use %*phC to dump small buffers
  isapnp: remove debug leftovers
  ARM: imx: cpuidle: use init/exit common routine
  ARM: davinci: cpuidle: use init/exit common routine
  ARM: kirkwood: cpuidle: use init/exit common routine
  ARM: calxeda: cpuidle: use init/exit common routine
  ARM: tegra: cpuidle: use init/exit common routine for tegra3
  ARM: tegra: cpuidle: use init/exit common routine for tegra2
  ARM: OMAP4: cpuidle: use init/exit common routine
  ...

5 files changed, 23 insertions, 400 deletions

diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile
index f6b46ae2b7f8..09b578f9eb84 100644
--- a/arch/arm/mach-tegra/Makefile
+++ b/arch/arm/mach-tegra/Makefile
@@ -24,7 +24,6 @@ obj-$(CONFIG_ARCH_TEGRA_3x_SOC)		+= cpuidle-tegra30.o
 endif
 obj-$(CONFIG_SMP)			+= platsmp.o headsmp.o
 obj-$(CONFIG_HOTPLUG_CPU)               += hotplug.o
-obj-$(CONFIG_CPU_FREQ)                  += cpu-tegra.o
 obj-$(CONFIG_TEGRA_PCI)			+= pcie.o
 
 obj-$(CONFIG_ARCH_TEGRA_2x_SOC)		+= board-dt-tegra20.o
diff --git a/arch/arm/mach-tegra/cpu-tegra.c b/arch/arm/mach-tegra/cpu-tegra.c
deleted file mode 100644
index e3d6e15ff188..000000000000
--- a/arch/arm/mach-tegra/cpu-tegra.c
+++ /dev/null
@@ -1,293 +0,0 @@
-/*
- * arch/arm/mach-tegra/cpu-tegra.c
- *
- * Copyright (C) 2010 Google, Inc.
- *
- * Author:
- *	Colin Cross <ccross@google.com>
- *	Based on arch/arm/plat-omap/cpu-omap.c, (C) 2005 Nokia Corporation
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/types.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/suspend.h>
-
-/* Frequency table index must be sequential starting at 0 */
-static struct cpufreq_frequency_table freq_table[] = {
-	{ 0, 216000 },
-	{ 1, 312000 },
-	{ 2, 456000 },
-	{ 3, 608000 },
-	{ 4, 760000 },
-	{ 5, 816000 },
-	{ 6, 912000 },
-	{ 7, 1000000 },
-	{ 8, CPUFREQ_TABLE_END },
-};
-
-#define NUM_CPUS	2
-
-static struct clk *cpu_clk;
-static struct clk *pll_x_clk;
-static struct clk *pll_p_clk;
-static struct clk *emc_clk;
-
-static unsigned long target_cpu_speed[NUM_CPUS];
-static DEFINE_MUTEX(tegra_cpu_lock);
-static bool is_suspended;
-
-static int tegra_verify_speed(struct cpufreq_policy *policy)
-{
-	return cpufreq_frequency_table_verify(policy, freq_table);
-}
-
-static unsigned int tegra_getspeed(unsigned int cpu)
-{
-	unsigned long rate;
-
-	if (cpu >= NUM_CPUS)
-		return 0;
-
-	rate = clk_get_rate(cpu_clk) / 1000;
-	return rate;
-}
-
-static int tegra_cpu_clk_set_rate(unsigned long rate)
-{
-	int ret;
-
-	/*
-	 * Take an extra reference to the main pll so it doesn't turn
-	 * off when we move the cpu off of it
-	 */
-	clk_prepare_enable(pll_x_clk);
-
-	ret = clk_set_parent(cpu_clk, pll_p_clk);
-	if (ret) {
-		pr_err("Failed to switch cpu to clock pll_p\n");
-		goto out;
-	}
-
-	if (rate == clk_get_rate(pll_p_clk))
-		goto out;
-
-	ret = clk_set_rate(pll_x_clk, rate);
-	if (ret) {
-		pr_err("Failed to change pll_x to %lu\n", rate);
-		goto out;
-	}
-
-	ret = clk_set_parent(cpu_clk, pll_x_clk);
-	if (ret) {
-		pr_err("Failed to switch cpu to clock pll_x\n");
-		goto out;
-	}
-
-out:
-	clk_disable_unprepare(pll_x_clk);
-	return ret;
-}
-
-static int tegra_update_cpu_speed(unsigned long rate)
-{
-	int ret = 0;
-	struct cpufreq_freqs freqs;
-
-	freqs.old = tegra_getspeed(0);
-	freqs.new = rate;
-
-	if (freqs.old == freqs.new)
-		return ret;
-
-	/*
-	 * Vote on memory bus frequency based on cpu frequency
-	 * This sets the minimum frequency, display or avp may request higher
-	 */
-	if (rate >= 816000)
-		clk_set_rate(emc_clk, 600000000); /* cpu 816 MHz, emc max */
-	else if (rate >= 456000)
-		clk_set_rate(emc_clk, 300000000); /* cpu 456 MHz, emc 150Mhz */
-	else
-		clk_set_rate(emc_clk, 100000000);  /* emc 50Mhz */
-
-	for_each_online_cpu(freqs.cpu)
-		cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
-
-#ifdef CONFIG_CPU_FREQ_DEBUG
-	printk(KERN_DEBUG "cpufreq-tegra: transition: %u --> %u\n",
-	       freqs.old, freqs.new);
-#endif
-
-	ret = tegra_cpu_clk_set_rate(freqs.new * 1000);
-	if (ret) {
-		pr_err("cpu-tegra: Failed to set cpu frequency to %d kHz\n",
-			freqs.new);
-		return ret;
-	}
-
-	for_each_online_cpu(freqs.cpu)
-		cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
-
-	return 0;
-}
-
-static unsigned long tegra_cpu_highest_speed(void)
-{
-	unsigned long rate = 0;
-	int i;
-
-	for_each_online_cpu(i)
-		rate = max(rate, target_cpu_speed[i]);
-	return rate;
-}
-
-static int tegra_target(struct cpufreq_policy *policy,
-		       unsigned int target_freq,
-		       unsigned int relation)
-{
-	unsigned int idx;
-	unsigned int freq;
-	int ret = 0;
-
-	mutex_lock(&tegra_cpu_lock);
-
-	if (is_suspended) {
-		ret = -EBUSY;
-		goto out;
-	}
-
-	cpufreq_frequency_table_target(policy, freq_table, target_freq,
-		relation, &idx);
-
-	freq = freq_table[idx].frequency;
-
-	target_cpu_speed[policy->cpu] = freq;
-
-	ret = tegra_update_cpu_speed(tegra_cpu_highest_speed());
-
-out:
-	mutex_unlock(&tegra_cpu_lock);
-	return ret;
-}
-
-static int tegra_pm_notify(struct notifier_block *nb, unsigned long event,
-	void *dummy)
-{
-	mutex_lock(&tegra_cpu_lock);
-	if (event == PM_SUSPEND_PREPARE) {
-		is_suspended = true;
-		pr_info("Tegra cpufreq suspend: setting frequency to %d kHz\n",
-			freq_table[0].frequency);
-		tegra_update_cpu_speed(freq_table[0].frequency);
-	} else if (event == PM_POST_SUSPEND) {
-		is_suspended = false;
-	}
-	mutex_unlock(&tegra_cpu_lock);
-
-	return NOTIFY_OK;
-}
-
-static struct notifier_block tegra_cpu_pm_notifier = {
-	.notifier_call = tegra_pm_notify,
-};
-
-static int tegra_cpu_init(struct cpufreq_policy *policy)
-{
-	if (policy->cpu >= NUM_CPUS)
-		return -EINVAL;
-
-	clk_prepare_enable(emc_clk);
-	clk_prepare_enable(cpu_clk);
-
-	cpufreq_frequency_table_cpuinfo(policy, freq_table);
-	cpufreq_frequency_table_get_attr(freq_table, policy->cpu);
-	policy->cur = tegra_getspeed(policy->cpu);
-	target_cpu_speed[policy->cpu] = policy->cur;
-
-	/* FIXME: what's the actual transition time? */
-	policy->cpuinfo.transition_latency = 300 * 1000;
-
-	cpumask_copy(policy->cpus, cpu_possible_mask);
-
-	if (policy->cpu == 0)
-		register_pm_notifier(&tegra_cpu_pm_notifier);
-
-	return 0;
-}
-
-static int tegra_cpu_exit(struct cpufreq_policy *policy)
-{
-	cpufreq_frequency_table_cpuinfo(policy, freq_table);
-	clk_disable_unprepare(emc_clk);
-	return 0;
-}
-
-static struct freq_attr *tegra_cpufreq_attr[] = {
-	&cpufreq_freq_attr_scaling_available_freqs,
-	NULL,
-};
-
-static struct cpufreq_driver tegra_cpufreq_driver = {
-	.verify		= tegra_verify_speed,
-	.target		= tegra_target,
-	.get		= tegra_getspeed,
-	.init		= tegra_cpu_init,
-	.exit		= tegra_cpu_exit,
-	.name		= "tegra",
-	.attr		= tegra_cpufreq_attr,
-};
-
-static int __init tegra_cpufreq_init(void)
-{
-	cpu_clk = clk_get_sys(NULL, "cpu");
-	if (IS_ERR(cpu_clk))
-		return PTR_ERR(cpu_clk);
-
-	pll_x_clk = clk_get_sys(NULL, "pll_x");
-	if (IS_ERR(pll_x_clk))
-		return PTR_ERR(pll_x_clk);
-
-	pll_p_clk = clk_get_sys(NULL, "pll_p_cclk");
-	if (IS_ERR(pll_p_clk))
-		return PTR_ERR(pll_p_clk);
-
-	emc_clk = clk_get_sys("cpu", "emc");
-	if (IS_ERR(emc_clk)) {
-		clk_put(cpu_clk);
-		return PTR_ERR(emc_clk);
-	}
-
-	return cpufreq_register_driver(&tegra_cpufreq_driver);
-}
-
-static void __exit tegra_cpufreq_exit(void)
-{
-        cpufreq_unregister_driver(&tegra_cpufreq_driver);
-	clk_put(emc_clk);
-	clk_put(cpu_clk);
-}
-
-
-MODULE_AUTHOR("Colin Cross <ccross@android.com>");
-MODULE_DESCRIPTION("cpufreq driver for Nvidia Tegra2");
-MODULE_LICENSE("GPL");
-module_init(tegra_cpufreq_init);
-module_exit(tegra_cpufreq_exit);
diff --git a/arch/arm/mach-tegra/cpuidle-tegra114.c b/arch/arm/mach-tegra/cpuidle-tegra114.c
index 0f4e8c483b34..1d1c6023f4a2 100644
--- a/arch/arm/mach-tegra/cpuidle-tegra114.c
+++ b/arch/arm/mach-tegra/cpuidle-tegra114.c
@@ -23,39 +23,13 @@
 static struct cpuidle_driver tegra_idle_driver = {
 	.name = "tegra_idle",
 	.owner = THIS_MODULE,
-	.en_core_tk_irqen = 1,
 	.state_count = 1,
 	.states = {
 		[0] = ARM_CPUIDLE_WFI_STATE_PWR(600),
 	},
 };
 
-static DEFINE_PER_CPU(struct cpuidle_device, tegra_idle_device);
-
 int __init tegra114_cpuidle_init(void)
 {
-	int ret;
-	unsigned int cpu;
-	struct cpuidle_device *dev;
-	struct cpuidle_driver *drv = &tegra_idle_driver;
-
-	ret = cpuidle_register_driver(&tegra_idle_driver);
-	if (ret) {
-		pr_err("CPUidle driver registration failed\n");
-		return ret;
-	}
-
-	for_each_possible_cpu(cpu) {
-		dev = &per_cpu(tegra_idle_device, cpu);
-		dev->cpu = cpu;
-
-		dev->state_count = drv->state_count;
-		ret = cpuidle_register_device(dev);
-		if (ret) {
-			pr_err("CPU%u: CPUidle device registration failed\n",
-				cpu);
-			return ret;
-		}
-	}
-	return 0;
+	return cpuidle_register(&tegra_idle_driver, NULL);
 }
diff --git a/arch/arm/mach-tegra/cpuidle-tegra20.c b/arch/arm/mach-tegra/cpuidle-tegra20.c
index 825ced4f7a40..590ec25855dd 100644
--- a/arch/arm/mach-tegra/cpuidle-tegra20.c
+++ b/arch/arm/mach-tegra/cpuidle-tegra20.c
@@ -43,32 +43,33 @@ static atomic_t abort_barrier;
 static int tegra20_idle_lp2_coupled(struct cpuidle_device *dev,
 				    struct cpuidle_driver *drv,
 				    int index);
+#define TEGRA20_MAX_STATES 2
+#else
+#define TEGRA20_MAX_STATES 1
 #endif
 
-static struct cpuidle_state tegra_idle_states[] = {
-	[0] = ARM_CPUIDLE_WFI_STATE_PWR(600),
-#ifdef CONFIG_PM_SLEEP
-	[1] = {
-		.enter			= tegra20_idle_lp2_coupled,
-		.exit_latency		= 5000,
-		.target_residency	= 10000,
-		.power_usage		= 0,
-		.flags			= CPUIDLE_FLAG_TIME_VALID |
-					  CPUIDLE_FLAG_COUPLED,
-		.name			= "powered-down",
-		.desc			= "CPU power gated",
-	},
-#endif
-};
-
 static struct cpuidle_driver tegra_idle_driver = {
 	.name = "tegra_idle",
 	.owner = THIS_MODULE,
-	.en_core_tk_irqen = 1,
+	.states = {
+		ARM_CPUIDLE_WFI_STATE_PWR(600),
+#ifdef CONFIG_PM_SLEEP
+		{
+			.enter            = tegra20_idle_lp2_coupled,
+			.exit_latency     = 5000,
+			.target_residency = 10000,
+			.power_usage      = 0,
+			.flags            = CPUIDLE_FLAG_TIME_VALID |
+			CPUIDLE_FLAG_COUPLED,
+			.name             = "powered-down",
+			.desc             = "CPU power gated",
+		},
+#endif
+	},
+	.state_count = TEGRA20_MAX_STATES,
+	.safe_state_index = 0,
 };
 
-static DEFINE_PER_CPU(struct cpuidle_device, tegra_idle_device);
-
 #ifdef CONFIG_PM_SLEEP
 #ifdef CONFIG_SMP
 static void __iomem *pmc = IO_ADDRESS(TEGRA_PMC_BASE);
@@ -217,39 +218,8 @@ static int tegra20_idle_lp2_coupled(struct cpuidle_device *dev,
 
 int __init tegra20_cpuidle_init(void)
 {
-	int ret;
-	unsigned int cpu;
-	struct cpuidle_device *dev;
-	struct cpuidle_driver *drv = &tegra_idle_driver;
-
 #ifdef CONFIG_PM_SLEEP
 	tegra_tear_down_cpu = tegra20_tear_down_cpu;
 #endif
-
-	drv->state_count = ARRAY_SIZE(tegra_idle_states);
-	memcpy(drv->states, tegra_idle_states,
-			drv->state_count * sizeof(drv->states[0]));
-
-	ret = cpuidle_register_driver(&tegra_idle_driver);
-	if (ret) {
-		pr_err("CPUidle driver registration failed\n");
-		return ret;
-	}
-
-	for_each_possible_cpu(cpu) {
-		dev = &per_cpu(tegra_idle_device, cpu);
-		dev->cpu = cpu;
-#ifdef CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED
-		dev->coupled_cpus = *cpu_possible_mask;
-#endif
-
-		dev->state_count = drv->state_count;
-		ret = cpuidle_register_device(dev);
-		if (ret) {
-			pr_err("CPU%u: CPUidle device registration failed\n",
-				cpu);
-			return ret;
-		}
-	}
-	return 0;
+	return cpuidle_register(&tegra_idle_driver, cpu_possible_mask);
 }
diff --git a/arch/arm/mach-tegra/cpuidle-tegra30.c b/arch/arm/mach-tegra/cpuidle-tegra30.c
index 8b50cf4ddd6f..36dc2befa9d8 100644
--- a/arch/arm/mach-tegra/cpuidle-tegra30.c
+++ b/arch/arm/mach-tegra/cpuidle-tegra30.c
@@ -43,7 +43,6 @@ static int tegra30_idle_lp2(struct cpuidle_device *dev,
 static struct cpuidle_driver tegra_idle_driver = {
 	.name = "tegra_idle",
 	.owner = THIS_MODULE,
-	.en_core_tk_irqen = 1,
 #ifdef CONFIG_PM_SLEEP
 	.state_count = 2,
 #else
@@ -65,8 +64,6 @@ static struct cpuidle_driver tegra_idle_driver = {
 	},
 };
 
-static DEFINE_PER_CPU(struct cpuidle_device, tegra_idle_device);
-
 #ifdef CONFIG_PM_SLEEP
 static bool tegra30_cpu_cluster_power_down(struct cpuidle_device *dev,
 					   struct cpuidle_driver *drv,
@@ -157,32 +154,8 @@ static int tegra30_idle_lp2(struct cpuidle_device *dev,
 
 int __init tegra30_cpuidle_init(void)
 {
-	int ret;
-	unsigned int cpu;
-	struct cpuidle_device *dev;
-	struct cpuidle_driver *drv = &tegra_idle_driver;
-
 #ifdef CONFIG_PM_SLEEP
 	tegra_tear_down_cpu = tegra30_tear_down_cpu;
 #endif
-
-	ret = cpuidle_register_driver(&tegra_idle_driver);
-	if (ret) {
-		pr_err("CPUidle driver registration failed\n");
-		return ret;
-	}
-
-	for_each_possible_cpu(cpu) {
-		dev = &per_cpu(tegra_idle_device, cpu);
-		dev->cpu = cpu;
-
-		dev->state_count = drv->state_count;
-		ret = cpuidle_register_device(dev);
-		if (ret) {
-			pr_err("CPU%u: CPUidle device registration failed\n",
-				cpu);
-			return ret;
-		}
-	}
-	return 0;
+	return cpuidle_register(&tegra_idle_driver, NULL);
 }