linux-toradex.git/drivers/thermal/armada_thermal.c, branch v4.4.32

thermal: armada: Fix possible overflow in the Armada 380 thermal sensor formula

2015-10-30T18:33:23+00:00

Update the coefficients so the calculation will not overrun the
unsigned long 32bits boundary

Signed-off-by: Nadav Haklai 
Reviewed-by: Victor Axelrod 
Reviewed-by: Neta Zur Hershkovits 
Signed-off-by: Gregory CLEMENT 
Signed-off-by: Eduardo Valentin

thermal: consistently use int for temperatures

2015-08-03T15:15:50+00:00

The thermal code uses int, long and unsigned long for temperatures
in different places.

Using an unsigned type limits the thermal framework to positive
temperatures without need. Also several drivers currently will report
temperatures near UINT_MAX for temperatures below 0°C. This will probably
immediately shut the machine down due to overtemperature if started below
0°C.

'long' is 64bit on several architectures. This is not needed since INT_MAX °mC
is above the melting point of all known materials.

Consistently use a plain 'int' for temperatures throughout the thermal code and
the drivers. This only changes the places in the drivers where the temperature
is passed around as pointer, when drivers internally use another type this is
not changed.

Signed-off-by: Sascha Hauer 
Acked-by: Geert Uytterhoeven 
Reviewed-by: Jean Delvare 
Reviewed-by: Lukasz Majewski 
Reviewed-by: Darren Hart 
Reviewed-by: Heiko Stuebner 
Reviewed-by: Peter Feuerer 
Cc: Punit Agrawal 
Cc: Zhang Rui 
Cc: Eduardo Valentin 
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: Jean Delvare 
Cc: Peter Feuerer 
Cc: Heiko Stuebner 
Cc: Lukasz Majewski 
Cc: Stephen Warren 
Cc: Thierry Reding 
Cc: linux-acpi@vger.kernel.org
Cc: platform-driver-x86@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-omap@vger.kernel.org
Cc: linux-samsung-soc@vger.kernel.org
Cc: Guenter Roeck 
Cc: Rafael J. Wysocki 
Cc: Maxime Ripard 
Cc: Darren Hart 
Cc: lm-sensors@lm-sensors.org
Signed-off-by: Zhang Rui

thermal: armada: Update Armada 380 thermal sensor coefficients

2015-05-09T08:00:31+00:00

Improve the Armada 380 thermal sensor accuracy by using updated formula.
The updated formula is:
Temperature[C degrees] = 0.4761 * tsen_vsen_out - 279.1

Signed-off-by: Nadav Haklai 
Signed-off-by: Gregory CLEMENT 
Cc:  #v3.16
Signed-off-by: Eduardo Valentin

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

2014-12-17T18:16:27+00:00

Pull thermal management update from Zhang Rui:
 "Summary:

   - of-thermal extension to allow drivers to register and use its
     functionality in a better way, without exploiting thermal core.
     From Lukasz Majewski.

   - Fix a bug in intel_soc_dts_thermal driver which calls a sleep
     function in interrupt handler.  From Maurice Petallo.

   - add a thermal UAPI header file for exporting the thermal generic
     netlink information to user-space.  From Florian Fainelli.

   - First round of refactoring in Exynos driver.  Bartlomiej and Lukasz
     are attempting to make it lean and easier to understand.

   - New thermal driver for Rockchip (rk3288), with support for DT
     thermal.  From Caesar Wang.

   - New thermal driver for Nvidia, Tegra124 SOCTHERM driver, with
     support for DT thermal.  From Mikko Perttunen.

   - New cooling device, based on common clock framework.  From Eduardo
     Valentin.

   - a couple of small fixes in thermal core framework.  From Srinivas
     Pandruvada, Javi Merino, Luis Henriques.

   - Dropping Armada A375-Z1 SoC thermal support as the chip is not in
     the market, armada folks decided to drop its support.

   - a couple of small fixes and cleanups in int340x thermal driver"

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (58 commits)
  thermal: provide an UAPI header file
  Thermal/int340x: Clear the error value of the last acpi_bus_get_device() call
  thermal/powerclamp: add id for braswell cpu
  thermal: Intel SoC DTS: Don't do thermal zone update inside spin_lock
  Thermal: fix platform_no_drv_owner.cocci warnings
  Thermal/int340x: avoid unnecessary pointer casting
  thermal: int3403: Delete a check before thermal_zone_device_unregister()
  thermal/int3400: export uuids
  thermal: of: Extend current of-thermal.c code to allow setting emulated temp
  thermal: of: Extend of-thermal to export table of trip points
  thermal: of: Rename struct __thermal_trip to struct thermal_trip
  thermal: of: Extend of-thermal.c to provide check if trip point is valid
  thermal: of: Extend of-thermal.c to provide number of trip points
  thermal: Fix error path in thermal_init()
  thermal: lock the thermal zone when switching governors
  thermal: core: ignore invalid trip temperature
  thermal: armada: Remove support for A375-Z1 SoC
  thermal: rockchip: add driver for thermal
  dt-bindings: document Rockchip thermal
  thermal: exynos: remove exynos_tmu_data.h include
  ...

thermal: armada: Remove support for A375-Z1 SoC

2014-11-24T20:55:42+00:00

The Armada 375 Z1 SoC revision is no longer supported. This commit
removes the quirk needed for the thermal sensor.

Acked-by: Jason Cooper 
Signed-off-by: Ezequiel Garcia 
Signed-off-by: Eduardo Valentin

thermal: drop owner assignment from platform_drivers

2014-10-20T14:21:42+00:00

A platform_driver does not need to set an owner, it will be populated by the
driver core.

Signed-off-by: Wolfram Sang

thermal: armada: Support Armada 380 SoC

2014-05-15T09:12:49+00:00

Now that a generic infrastructure is in place, it's possible to support
the Armada 380 SoC thermal sensor. This sensor is similar to the one
available in the already supported SoCs, with its specific temperature formula
and specific sensor initialization.

Acked-by: Jason Cooper 
Signed-off-by: Ezequiel Garcia 
Signed-off-by: Zhang Rui

thermal: armada: Support Armada 375 SoC

2014-05-15T09:12:49+00:00

Now that a generic infrastructure is in place, it's possible to support
the new Armada 375 SoC thermal sensor. This sensor is similar to the one
available in the already supported SoCs, with its specific temperature formula
and specific sensor initialization.

In addition, we also add support for the Z1 SoC stepping, which needs
an initialization-quirk to work properly.

Acked-by: Jason Cooper 
Signed-off-by: Ezequiel Garcia 
Signed-off-by: Zhang Rui

thermal: armada: Allow to specify an 'inverted readout' sensor

2014-05-15T09:12:48+00:00

In order to support inverted-formula thermal sensor readout, this commit
introduces an 'inverted' field in the SoC-specific structure which
allows to specify an inversion of the temperature formula.

Acked-by: Jason Cooper 
Signed-off-by: Ezequiel Garcia 
Signed-off-by: Zhang Rui

thermal: armada: Pass the platform_device to init_sensor()

2014-05-15T09:12:47+00:00

In order to perform SoC-specific quirks on platforms that need them,
this commit adds a new parameter to the init_sensor() function.
This will be used to support early silicons of the Armada 375 SoC,
to workaround some hardware issues.

Acked-by: Jason Cooper 
Signed-off-by: Ezequiel Garcia 
Signed-off-by: Zhang Rui