[PATCH V5 00/30] thermal: exynos: Add thermal driver for exynos5440

[Amit Daniel Kachhap <amit.daniel@samsung.com>]

Most of the changes in this version is as per suggestion from Jonghwa Lee. I
have retained one to one mapping of platform data with TMU instances as the
TMU's are different devices. In exynos5440 soc there is some register
sharing across multiple TMU's but in exynos5420 there is no register between
multiple TMU's, so the current implementation is useful to support both of the
above.

This patch uses localized ARCH_HAS_TMU Kconfig option and is a temporary solution
until a more generic macro ARCH_HAS_BANDGAP is introduced as per discussion in
the link https://patchwork.kernel.org/patch/2659001/.

Changes in V5:
* trip type is passed as platform data.
* HW trip is allowed only for maximum level.
* Platform data structure is now abstracted inside 1 more structure to support
  strong multiple sensor TMU data. 

Changes in V4:
 Almost all the changes in this version is as per suggestion from Eduardo.The
 major ones are listed below,
* Added kconfig symbol ARCH_HAS_TMU which needs to be enabled by platform. With
  this change existing symbol EXYNOS_TMU_DATA is not needed.
* Movement of freq_clip_table from exynos_tmu.h to exynos_thermal_common.h is
  explained in the commit logs.
* Wrote all register description documentation.
* Split 5440 TMU support patch into controller change, configuration data and
  feature addition patches.
* Remove all *LINUX_* in the header files.
* Still regulator enable is kept optional but a TODO: comment is added to fix
  it later.

Changes in V3:
* Added proper dependency of different exynos thermal Kconfig symbols. Basically 3
 Kconfig can be enabled now and corresponds to tmu driver. exynos common part
 and exynos configuration data. This issue was raised by Rui Zhang.

Changes in V2:
* Separated SOC data from TMU driver. This is as per suggestion from Eduardo.
* Merged the new file created for exynos5440 TMU controller with the existing
 TMU controller code.
* Removed the DT parsing code as now the SOC specific data are cleanly put
 inside the data specific file.
* Even the register definations/bitfields are treated as data as there is
 some variation across SOC's.

This patchset adds TMU(Thermal management Unit) driver support for
exynos5440 platform. There are 3 instances of the TMU controllers so
necessary cleanup/re-structure is done to handle multiple thermal zone.

Patch (exynos4: Add documentation for Exynos SoC thermal bindings) from
Lukasz Majewski is already posted to mainline. Adding it here for completeness.
(http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg17817.html)

Patch (thermal: exynos: Support thermal tripping ) from Jonghwan Choi is
added here with some changes.
(https://patchwork.kernel.org/patch/1668371/)

Patch (thermal: exynos: Support for TMU regulator defined at device tree)
is a repost of my earlier patch(https://patchwork-mail1.kernel.org/patch/2510771/) 
and adds regulator support.

Patch (ARM: dts: Add device tree node for exynos5440 TMU controller) and
patch (arm: exynos: enable ARCH_HAS_TMU) can be merged through exynos platform
maintainer as this can cause merge conflict.

All these patches are based on thermal maintainers git tree,
git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux.git next.

Amit Daniel Kachhap (29):
  thermal: exynos: Moving exynos thermal files into samsung directory
  thermal: exynos: Add ARCH_HAS_TMU config to know the supported soc's
  thermal: exynos: Remove CPU_THERMAL dependency for using TMU driver
  thermal: exynos: Bifurcate exynos thermal common and tmu controller
    code
  thermal: exynos: Rename exynos_thermal.c to exynos_tmu.c
  thermal: exynos: Move exynos_thermal.h from include/* to driver/*
    folder
  thermal: exynos: Bifurcate exynos tmu driver and configuration data
  thermal: exynos: Add missing definations and code cleanup
  thermal: exynos: Add extra entries in the tmu platform data
  thermal: exynos: Move register definitions from driver to data file
  thermal: exynos: Support thermal tripping
  thermal: exynos: Fix to clear only the generated interrupts
  thermal: exynos: Add support for instance based register/unregister
  thermal: exynos: Modify private_data to appropriate name driver_data
  thermal: exynos: Return success even if no cooling data supplied
  thermal: exynos: Make the zone handling use trip information
  thermal: exynos: Remove non DT based support
  thermal: exynos: Add support to handle many instances of TMU
  thermal: exynos: Add TMU features to check instead of using SOC type
  thermal: exynos: use device resource management infrastructure
  thermal: exynos: Add support to access common register for
    multistance
  thermal: exynos: Add driver support for exynos5440 TMU sensor
  thermal: exynos: Add thermal configuration data for exynos5440 TMU
    sensor
  thermal: exynos: Fix to set the second point correction value
  thermal: exynos: Add hardware mode thermal calibration support
  Documentation: thermal: Explain the exynos thermal driver model
  thermal: exynos: Support for TMU regulator defined at device tree
  ARM: dts: Add device tree node for exynos5440 TMU controller
  arm: exynos: enable ARCH_HAS_TMU

Lukasz Majewski (1):
  ARM: dts: thermal: exynos4: Add documentation for Exynos SoC thermal
    bindings

 .../devicetree/bindings/thermal/exynos-thermal.txt |   55 +
 Documentation/thermal/exynos_thermal               |   43 +-
 arch/arm/boot/dts/exynos5440.dtsi                  |   30 +
 arch/arm/mach-exynos/Kconfig                       |    5 +
 drivers/thermal/Kconfig                            |   14 +-
 drivers/thermal/Makefile                           |    2 +-
 drivers/thermal/exynos_thermal.c                   | 1058 --------------------
 drivers/thermal/samsung/Kconfig                    |   21 +
 drivers/thermal/samsung/Makefile                   |    7 +
 drivers/thermal/samsung/exynos_thermal_common.c    |  413 ++++++++
 drivers/thermal/samsung/exynos_thermal_common.h    |  106 ++
 drivers/thermal/samsung/exynos_tmu.c               |  750 ++++++++++++++
 drivers/thermal/samsung/exynos_tmu.h               |  307 ++++++
 drivers/thermal/samsung/exynos_tmu_data.c          |  250 +++++
 drivers/thermal/samsung/exynos_tmu_data.h          |  155 +++
 include/linux/platform_data/exynos_thermal.h       |  119 ---
 16 files changed, 2140 insertions(+), 1195 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/thermal/exynos-thermal.txt
 delete mode 100644 drivers/thermal/exynos_thermal.c
 create mode 100644 drivers/thermal/samsung/Kconfig
 create mode 100644 drivers/thermal/samsung/Makefile
 create mode 100644 drivers/thermal/samsung/exynos_thermal_common.c
 create mode 100644 drivers/thermal/samsung/exynos_thermal_common.h
 create mode 100644 drivers/thermal/samsung/exynos_tmu.c
 create mode 100644 drivers/thermal/samsung/exynos_tmu.h
 create mode 100644 drivers/thermal/samsung/exynos_tmu_data.c
 create mode 100644 drivers/thermal/samsung/exynos_tmu_data.h
 delete mode 100644 include/linux/platform_data/exynos_thermal.h