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

…rzhang/linux

Pull thermal management updates from Zhang Rui:
 "Sorry that I missed the merge window as there is a bug found in the
  last minute, and I have to fix it and wait for the code to be tested
  in linux-next tree for a few days.  Now the buggy patch has been
  dropped entirely from my next branch.  Thus I hope those changes can
  still be merged in 3.18-rc2 as most of them are platform thermal
  driver changes.

  Specifics:

   - introduce ACPI INT340X thermal drivers.

     Newer laptops and tablets may have thermal sensors and other
     devices with thermal control capabilities that are exposed for the
     OS to use via the ACPI INT340x device objects.  Several drivers are
     introduced to expose the temperature information and cooling
     ability from these objects to user-space via the normal thermal
     framework.

     From: Lu Aaron, Lan Tianyu, Jacob Pan and Zhang Rui.

   - introduce a new thermal governor, which just uses a hysteresis to
     switch abruptly on/off a cooling device.  This governor can be used
     to control certain fan devices that can not be throttled but just
     switched on or off.  From: Peter Feuerer.

   - introduce support for some new thermal interrupt functions on
     i.MX6SX, in IMX thermal driver.  From: Anson, Huang.

   - introduce tracing support on thermal framework.  From: Punit
     Agrawal.

   - small fixes in OF thermal and thermal step_wise governor"

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (25 commits)
  Thermal: int340x thermal: select ACPI fan driver
  Thermal: int3400_thermal: use acpi_thermal_rel parsing APIs
  Thermal: int340x_thermal: expose acpi thermal relationship tables
  Thermal: introduce int3403 thermal driver
  Thermal: introduce INT3402 thermal driver
  Thermal: move the KELVIN_TO_MILLICELSIUS macro to thermal.h
  ACPI / Fan: support INT3404 thermal device
  ACPI / Fan: add ACPI 4.0 style fan support
  ACPI / fan: convert to platform driver
  ACPI / fan: use acpi_device_xxx_power instead of acpi_bus equivelant
  ACPI / fan: remove no need check for device pointer
  ACPI / fan: remove unused macro
  Thermal: int3400 thermal: register to thermal framework
  Thermal: int3400 thermal: add capability to detect supporting UUIDs
  Thermal: introduce int3400 thermal driver
  ACPI: add ACPI_TYPE_LOCAL_REFERENCE support to acpi_extract_package()
  ACPI: make acpi_create_platform_device() an external API
  thermal: step_wise: fix: Prevent from binary overflow when trend is dropping
  ACPI: introduce ACPI int340x thermal scan handler
  thermal: Added Bang-bang thermal governor
  ...

Documentation/devicetree/bindings/thermal/imx-thermal.txt

@@ -1,7 +1,10 @@
 * Temperature Monitor (TEMPMON) on Freescale i.MX SoCs
 
 Required properties:
-- compatible : "fsl,imx6q-thermal"
+- compatible : "fsl,imx6q-tempmon" for i.MX6Q, "fsl,imx6sx-tempmon" for i.MX6SX.
+  i.MX6SX has two more IRQs than i.MX6Q, one is IRQ_LOW and the other is IRQ_PANIC,
+  when temperature is below than low threshold, IRQ_LOW will be triggered, when temperature
+  is higher than panic threshold, system will auto reboot by SRC module.
 - fsl,tempmon : phandle pointer to system controller that contains TEMPMON
   control registers, e.g. ANATOP on imx6q.
 - fsl,tempmon-data : phandle pointer to fuse controller that contains TEMPMON

drivers/acpi/Kconfig

@@ -144,7 +144,7 @@ config ACPI_VIDEO
 
 config ACPI_FAN
 	tristate "Fan"
-	select THERMAL
+	depends on THERMAL
 	default y
 	help
 	  This driver supports ACPI fan devices, allowing user-mode

drivers/acpi/Makefile

@@ -43,6 +43,7 @@ acpi-y				+= pci_root.o pci_link.o pci_irq.o
 acpi-y				+= acpi_lpss.o
 acpi-y				+= acpi_platform.o
 acpi-y				+= acpi_pnp.o
+acpi-y				+= int340x_thermal.o
 acpi-y				+= power.o
 acpi-y				+= event.o
 acpi-y				+= sysfs.o

drivers/acpi/acpi_platform.c

@@ -113,3 +113,4 @@ struct platform_device *acpi_create_platform_device(struct acpi_device *adev)
 	kfree(resources);
 	return pdev;
 }
+EXPORT_SYMBOL_GPL(acpi_create_platform_device);

drivers/acpi/device_pm.c

@@ -343,6 +343,7 @@ int acpi_device_update_power(struct acpi_device *device, int *state_p)
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(acpi_device_update_power);
 
 int acpi_bus_update_power(acpi_handle handle, int *state_p)
 {