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

Pull thermal management updates from Zhang Rui:
 "There are not too many changes this time, except two new platform
  thermal drivers, ti-soc-thermal driver and x86_pkg_temp_thermal
  driver, and a couple of small fixes.

  Highlights:

   - move the ti-soc-thermal driver out of the staging tree to the
     thermal tree.

   - introduce the x86_pkg_temp_thermal driver.  This driver registers
     CPU digital temperature package level sensor as a thermal zone.

   - small fixes/cleanups including removing redundant use of
     platform_set_drvdata() and of_match_ptr for all platform thermal
     drivers"

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (34 commits)
  thermal: cpu_cooling: fix stub function
  thermal: ti-soc-thermal: use standard GPIO DT bindings
  thermal: MAINTAINERS: Add git tree path for SoC specific updates
  thermal: fix x86_pkg_temp_thermal.c build and Kconfig
  Thermal: Documentation for x86 package temperature thermal driver
  Thermal: CPU Package temperature thermal
  thermal: consider emul_temperature while computing trend
  thermal: ti-soc-thermal: add DT example for DRA752 chip
  thermal: ti-soc-thermal: add dra752 chip to device table
  thermal: ti-soc-thermal: add thermal data for DRA752 chips
  thermal: ti-soc-thermal: remove usage of IS_ERR_OR_NULL
  thermal: ti-soc-thermal: freeze FSM while computing trend
  thermal: ti-soc-thermal: remove external heat while extrapolating hotspot
  thermal: ti-soc-thermal: update DT reference for OMAP5430
  x86, mcheck, therm_throt: Process package thresholds
  thermal: cpu_cooling: fix 'descend' check in get_property()
  Thermal: spear: Remove redundant use of of_match_ptr
  Thermal: kirkwood: Remove redundant use of of_match_ptr
  Thermal: dove: Remove redundant use of of_match_ptr
  Thermal: armada: Remove redundant use of of_match_ptr
  ...

2 files changed, 66 insertions, 4 deletions

diff --git a/arch/x86/include/asm/mce.h b/arch/x86/include/asm/mce.h
index 6b52980..29e3093 100644
--- a/arch/x86/include/asm/mce.h
+++ b/arch/x86/include/asm/mce.h
@@ -214,6 +214,13 @@ void mce_log_therm_throt_event(__u64 status);
 /* Interrupt Handler for core thermal thresholds */
 extern int (*platform_thermal_notify)(__u64 msr_val);
 
+/* Interrupt Handler for package thermal thresholds */
+extern int (*platform_thermal_package_notify)(__u64 msr_val);
+
+/* Callback support of rate control, return true, if
+ * callback has rate control */
+extern bool (*platform_thermal_package_rate_control)(void);
+
 #ifdef CONFIG_X86_THERMAL_VECTOR
 extern void mcheck_intel_therm_init(void);
 #else
diff --git a/arch/x86/kernel/cpu/mcheck/therm_throt.c b/arch/x86/kernel/cpu/mcheck/therm_throt.c
index 98f2083..41e8e00 100644
--- a/arch/x86/kernel/cpu/mcheck/therm_throt.c
+++ b/arch/x86/kernel/cpu/mcheck/therm_throt.c
@@ -55,12 +55,24 @@ struct thermal_state {
 	struct _thermal_state package_power_limit;
 	struct _thermal_state core_thresh0;
 	struct _thermal_state core_thresh1;
+	struct _thermal_state pkg_thresh0;
+	struct _thermal_state pkg_thresh1;
 };
 
 /* Callback to handle core threshold interrupts */
 int (*platform_thermal_notify)(__u64 msr_val);
 EXPORT_SYMBOL(platform_thermal_notify);
 
+/* Callback to handle core package threshold_interrupts */
+int (*platform_thermal_package_notify)(__u64 msr_val);
+EXPORT_SYMBOL_GPL(platform_thermal_package_notify);
+
+/* Callback support of rate control, return true, if
+ * callback has rate control */
+bool (*platform_thermal_package_rate_control)(void);
+EXPORT_SYMBOL_GPL(platform_thermal_package_rate_control);
+
+
 static DEFINE_PER_CPU(struct thermal_state, thermal_state);
 
 static atomic_t therm_throt_en	= ATOMIC_INIT(0);
@@ -195,19 +207,25 @@ static int therm_throt_process(bool new_event, int event, int level)
 	return 0;
 }
 
-static int thresh_event_valid(int event)
+static int thresh_event_valid(int level, int event)
 {
 	struct _thermal_state *state;
 	unsigned int this_cpu = smp_processor_id();
 	struct thermal_state *pstate = &per_cpu(thermal_state, this_cpu);
 	u64 now = get_jiffies_64();
 
-	state = (event == 0) ? &pstate->core_thresh0 : &pstate->core_thresh1;
+	if (level == PACKAGE_LEVEL)
+		state = (event == 0) ? &pstate->pkg_thresh0 :
+						&pstate->pkg_thresh1;
+	else
+		state = (event == 0) ? &pstate->core_thresh0 :
+						&pstate->core_thresh1;
 
 	if (time_before64(now, state->next_check))
 		return 0;
 
 	state->next_check = now + CHECK_INTERVAL;
+
 	return 1;
 }
 
@@ -322,6 +340,39 @@ device_initcall(thermal_throttle_init_device);
 
 #endif /* CONFIG_SYSFS */
 
+static void notify_package_thresholds(__u64 msr_val)
+{
+	bool notify_thres_0 = false;
+	bool notify_thres_1 = false;
+
+	if (!platform_thermal_package_notify)
+		return;
+
+	/* lower threshold check */
+	if (msr_val & THERM_LOG_THRESHOLD0)
+		notify_thres_0 = true;
+	/* higher threshold check */
+	if (msr_val & THERM_LOG_THRESHOLD1)
+		notify_thres_1 = true;
+
+	if (!notify_thres_0 && !notify_thres_1)
+		return;
+
+	if (platform_thermal_package_rate_control &&
+		platform_thermal_package_rate_control()) {
+		/* Rate control is implemented in callback */
+		platform_thermal_package_notify(msr_val);
+		return;
+	}
+
+	/* lower threshold reached */
+	if (notify_thres_0 && thresh_event_valid(PACKAGE_LEVEL, 0))
+		platform_thermal_package_notify(msr_val);
+	/* higher threshold reached */
+	if (notify_thres_1 && thresh_event_valid(PACKAGE_LEVEL, 1))
+		platform_thermal_package_notify(msr_val);
+}
+
 static void notify_thresholds(__u64 msr_val)
 {
 	/* check whether the interrupt handler is defined;
@@ -331,10 +382,12 @@ static void notify_thresholds(__u64 msr_val)
 		return;
 
 	/* lower threshold reached */
-	if ((msr_val & THERM_LOG_THRESHOLD0) &&	thresh_event_valid(0))
+	if ((msr_val & THERM_LOG_THRESHOLD0) &&
+			thresh_event_valid(CORE_LEVEL, 0))
 		platform_thermal_notify(msr_val);
 	/* higher threshold reached */
-	if ((msr_val & THERM_LOG_THRESHOLD1) && thresh_event_valid(1))
+	if ((msr_val & THERM_LOG_THRESHOLD1) &&
+			thresh_event_valid(CORE_LEVEL, 1))
 		platform_thermal_notify(msr_val);
 }
 
@@ -360,6 +413,8 @@ static void intel_thermal_interrupt(void)
 
 	if (this_cpu_has(X86_FEATURE_PTS)) {
 		rdmsrl(MSR_IA32_PACKAGE_THERM_STATUS, msr_val);
+		/* check violations of package thermal thresholds */
+		notify_package_thresholds(msr_val);
 		therm_throt_process(msr_val & PACKAGE_THERM_STATUS_PROCHOT,
 					THERMAL_THROTTLING_EVENT,
 					PACKAGE_LEVEL);