Merge tag 'pm-for-3.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management updates from Rafael J Wysocki:

 - Improved system suspend/resume and runtime PM handling for the SH
   TMU, CMT and MTU2 clock event devices (also used by ARM/shmobile).

 - Generic PM domains framework extensions related to cpuidle support
   and domain objects lookup using names.

 - ARM/shmobile power management updates including improved support for
   the SH7372's A4S power domain containing the CPU core.

 - cpufreq changes related to AMD CPUs support from Matthew Garrett,
   Andre Przywara and Borislav Petkov.

 - cpu0 cpufreq driver from Shawn Guo.

 - cpufreq governor fixes related to the relaxing of limit from Michal
   Pecio.

 - OMAP cpufreq updates from Axel Lin and Richard Zhao.

 - cpuidle ladder governor fixes related to the disabling of states from
   Carsten Emde and me.

 - Runtime PM core updates related to the interactions with the system
   suspend core from Alan Stern and Kevin Hilman.

 - Wakeup sources modification allowing more helper functions to be
   called from interrupt context from John Stultz and additional
   diagnostic code from Todd Poynor.

 - System suspend error code path fix from Feng Hong.

Fixed up conflicts in cpufreq/powernow-k8 that stemmed from the
workqueue fixes conflicting fairly badly with the removal of support for
hardware P-state chips.  The changes were independent but somewhat
intertwined.

* tag 'pm-for-3.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (76 commits)
  Revert "PM QoS: Use spinlock in the per-device PM QoS constraints code"
  PM / Runtime: let rpm_resume() succeed if RPM_ACTIVE, even when disabled, v2
  cpuidle: rename function name "__cpuidle_register_driver", v2
  cpufreq: OMAP: Check IS_ERR() instead of NULL for omap_device_get_by_hwmod_name
  cpuidle: remove some empty lines
  PM: Prevent runtime suspend during system resume
  PM QoS: Use spinlock in the per-device PM QoS constraints code
  PM / Sleep: use resume event when call dpm_resume_early
  cpuidle / ACPI : move cpuidle_device field out of the acpi_processor_power structure
  ACPI / processor: remove pointless variable initialization
  ACPI / processor: remove unused function parameter
  cpufreq: OMAP: remove loops_per_jiffy recalculate for smp
  sections: fix section conflicts in drivers/cpufreq
  cpufreq: conservative: update frequency when limits are relaxed
  cpufreq / ondemand: update frequency when limits are relaxed
  properly __init-annotate pm_sysrq_init()
  cpufreq: Add a generic cpufreq-cpu0 driver
  PM / OPP: Initialize OPP table from device tree
  ARM: add cpufreq transiton notifier to adjust loops_per_jiffy for smp
  cpufreq: Remove support for hardware P-state chips from powernow-k8
  ...

3 files changed, 59 insertions, 19 deletions

diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c
index bfc31cb0dd3e..e78c2a52ea46 100644
--- a/drivers/acpi/processor_driver.c
+++ b/drivers/acpi/processor_driver.c
@@ -475,7 +475,7 @@ static __ref int acpi_processor_start(struct acpi_processor *pr)
 	acpi_processor_get_limit_info(pr);
 
 	if (!cpuidle_get_driver() || cpuidle_get_driver() == &acpi_idle_driver)
-		acpi_processor_power_init(pr, device);
+		acpi_processor_power_init(pr);
 
 	pr->cdev = thermal_cooling_device_register("Processor", device,
 						   &processor_cooling_ops);
@@ -509,7 +509,7 @@ err_remove_sysfs_thermal:
 err_thermal_unregister:
 	thermal_cooling_device_unregister(pr->cdev);
 err_power_exit:
-	acpi_processor_power_exit(pr, device);
+	acpi_processor_power_exit(pr);
 
 	return result;
 }
@@ -620,7 +620,7 @@ static int acpi_processor_remove(struct acpi_device *device, int type)
 			return -EINVAL;
 	}
 
-	acpi_processor_power_exit(pr, device);
+	acpi_processor_power_exit(pr);
 
 	sysfs_remove_link(&device->dev.kobj, "sysdev");
 
@@ -905,8 +905,6 @@ static int __init acpi_processor_init(void)
 	if (acpi_disabled)
 		return 0;
 
-	memset(&errata, 0, sizeof(errata));
-
 	result = acpi_bus_register_driver(&acpi_processor_driver);
 	if (result < 0)
 		return result;
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index ad3730b4038b..3655ab923812 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -79,6 +79,8 @@ module_param(bm_check_disable, uint, 0000);
 static unsigned int latency_factor __read_mostly = 2;
 module_param(latency_factor, uint, 0644);
 
+static DEFINE_PER_CPU(struct cpuidle_device *, acpi_cpuidle_device);
+
 static int disabled_by_idle_boot_param(void)
 {
 	return boot_option_idle_override == IDLE_POLL ||
@@ -483,8 +485,6 @@ static int acpi_processor_get_power_info_cst(struct acpi_processor *pr)
 		if (obj->type != ACPI_TYPE_INTEGER)
 			continue;
 
-		cx.power = obj->integer.value;
-
 		current_count++;
 		memcpy(&(pr->power.states[current_count]), &cx, sizeof(cx));
 
@@ -1000,7 +1000,7 @@ static int acpi_processor_setup_cpuidle_cx(struct acpi_processor *pr)
 	int i, count = CPUIDLE_DRIVER_STATE_START;
 	struct acpi_processor_cx *cx;
 	struct cpuidle_state_usage *state_usage;
-	struct cpuidle_device *dev = &pr->power.dev;
+	struct cpuidle_device *dev = per_cpu(acpi_cpuidle_device, pr->id);
 
 	if (!pr->flags.power_setup_done)
 		return -EINVAL;
@@ -1132,6 +1132,7 @@ static int acpi_processor_setup_cpuidle_states(struct acpi_processor *pr)
 int acpi_processor_hotplug(struct acpi_processor *pr)
 {
 	int ret = 0;
+	struct cpuidle_device *dev = per_cpu(acpi_cpuidle_device, pr->id);
 
 	if (disabled_by_idle_boot_param())
 		return 0;
@@ -1147,11 +1148,11 @@ int acpi_processor_hotplug(struct acpi_processor *pr)
 		return -ENODEV;
 
 	cpuidle_pause_and_lock();
-	cpuidle_disable_device(&pr->power.dev);
+	cpuidle_disable_device(dev);
 	acpi_processor_get_power_info(pr);
 	if (pr->flags.power) {
 		acpi_processor_setup_cpuidle_cx(pr);
-		ret = cpuidle_enable_device(&pr->power.dev);
+		ret = cpuidle_enable_device(dev);
 	}
 	cpuidle_resume_and_unlock();
 
@@ -1162,6 +1163,7 @@ int acpi_processor_cst_has_changed(struct acpi_processor *pr)
 {
 	int cpu;
 	struct acpi_processor *_pr;
+	struct cpuidle_device *dev;
 
 	if (disabled_by_idle_boot_param())
 		return 0;
@@ -1192,7 +1194,8 @@ int acpi_processor_cst_has_changed(struct acpi_processor *pr)
 			_pr = per_cpu(processors, cpu);
 			if (!_pr || !_pr->flags.power_setup_done)
 				continue;
-			cpuidle_disable_device(&_pr->power.dev);
+			dev = per_cpu(acpi_cpuidle_device, cpu);
+			cpuidle_disable_device(dev);
 		}
 
 		/* Populate Updated C-state information */
@@ -1206,7 +1209,8 @@ int acpi_processor_cst_has_changed(struct acpi_processor *pr)
 			acpi_processor_get_power_info(_pr);
 			if (_pr->flags.power) {
 				acpi_processor_setup_cpuidle_cx(_pr);
-				cpuidle_enable_device(&_pr->power.dev);
+				dev = per_cpu(acpi_cpuidle_device, cpu);
+				cpuidle_enable_device(dev);
 			}
 		}
 		put_online_cpus();
@@ -1218,11 +1222,11 @@ int acpi_processor_cst_has_changed(struct acpi_processor *pr)
 
 static int acpi_processor_registered;
 
-int __cpuinit acpi_processor_power_init(struct acpi_processor *pr,
-			      struct acpi_device *device)
+int __cpuinit acpi_processor_power_init(struct acpi_processor *pr)
 {
 	acpi_status status = 0;
 	int retval;
+	struct cpuidle_device *dev;
 	static int first_run;
 
 	if (disabled_by_idle_boot_param())
@@ -1268,11 +1272,18 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr,
 			printk(KERN_DEBUG "ACPI: %s registered with cpuidle\n",
 					acpi_idle_driver.name);
 		}
+
+		dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+		if (!dev)
+			return -ENOMEM;
+		per_cpu(acpi_cpuidle_device, pr->id) = dev;
+
+		acpi_processor_setup_cpuidle_cx(pr);
+
 		/* Register per-cpu cpuidle_device. Cpuidle driver
 		 * must already be registered before registering device
 		 */
-		acpi_processor_setup_cpuidle_cx(pr);
-		retval = cpuidle_register_device(&pr->power.dev);
+		retval = cpuidle_register_device(dev);
 		if (retval) {
 			if (acpi_processor_registered == 0)
 				cpuidle_unregister_driver(&acpi_idle_driver);
@@ -1283,14 +1294,15 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr,
 	return 0;
 }
 
-int acpi_processor_power_exit(struct acpi_processor *pr,
-			      struct acpi_device *device)
+int acpi_processor_power_exit(struct acpi_processor *pr)
 {
+	struct cpuidle_device *dev = per_cpu(acpi_cpuidle_device, pr->id);
+
 	if (disabled_by_idle_boot_param())
 		return 0;
 
 	if (pr->flags.power) {
-		cpuidle_unregister_device(&pr->power.dev);
+		cpuidle_unregister_device(dev);
 		acpi_processor_registered--;
 		if (acpi_processor_registered == 0)
 			cpuidle_unregister_driver(&acpi_idle_driver);
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index a093dc163a42..836bfe069042 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -324,6 +324,34 @@ static int acpi_processor_get_performance_control(struct acpi_processor *pr)
 	return result;
 }
 
+#ifdef CONFIG_X86
+/*
+ * Some AMDs have 50MHz frequency multiples, but only provide 100MHz rounding
+ * in their ACPI data. Calculate the real values and fix up the _PSS data.
+ */
+static void amd_fixup_frequency(struct acpi_processor_px *px, int i)
+{
+	u32 hi, lo, fid, did;
+	int index = px->control & 0x00000007;
+
+	if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD)
+		return;
+
+	if ((boot_cpu_data.x86 == 0x10 && boot_cpu_data.x86_model < 10)
+	    || boot_cpu_data.x86 == 0x11) {
+		rdmsr(MSR_AMD_PSTATE_DEF_BASE + index, lo, hi);
+		fid = lo & 0x3f;
+		did = (lo >> 6) & 7;
+		if (boot_cpu_data.x86 == 0x10)
+			px->core_frequency = (100 * (fid + 0x10)) >> did;
+		else
+			px->core_frequency = (100 * (fid + 8)) >> did;
+	}
+}
+#else
+static void amd_fixup_frequency(struct acpi_processor_px *px, int i) {};
+#endif
+
 static int acpi_processor_get_performance_states(struct acpi_processor *pr)
 {
 	int result = 0;
@@ -379,6 +407,8 @@ static int acpi_processor_get_performance_states(struct acpi_processor *pr)
 			goto end;
 		}
 
+		amd_fixup_frequency(px, i);
+
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
 				  "State [%d]: core_frequency[%d] power[%d] transition_latency[%d] bus_master_latency[%d] control[0x%x] status[0x%x]\n",
 				  i,