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Date: Thu, 6 Jun 2013 09:48:33 -0400
From: Eduardo Valentin <eduardo.valentin@...com>
To: amit daniel kachhap <amit.daniel@...sung.com>
CC: Eduardo Valentin <eduardo.valentin@...com>,
<linux-pm@...r.kernel.org>, Zhang Rui <rui.zhang@...el.com>,
<linux-samsung-soc@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, Kukjin Kim <kgene.kim@...sung.com>,
Tony Lindgren <tony@...mide.com>, Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH V4 00/30] thermal: exynos: Add thermal driver for exynos5440
Hi,
On 04-06-2013 23:49, amit daniel kachhap wrote:
> On Tue, Jun 4, 2013 at 6:31 PM, Eduardo Valentin
> <eduardo.valentin@...com> wrote:
>>
>> Hi,
>>
>> On 04-06-2013 08:57, Eduardo Valentin wrote:
>>> On 04-06-2013 00:55, amit daniel kachhap wrote:
>>>> Hi Eduardo,
>>>>
>>>> On Wed, May 15, 2013 at 8:14 PM, Eduardo Valentin
>>>> <eduardo.valentin@...com> wrote:
>>>>> On 14-05-2013 05:58, Amit Daniel Kachhap wrote:
>>>>>> 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.
>>>>>
>>>>> I was more thinking if we could have a single flag that we could use in
>>>>> thermal drivers. Besides, my proposal for ARCH_HAS_BANDGAP is still not
>>>>> merged yet.
>>>>
>>>> yes a single flag might be useful such as ARCH_HAS_THERMAL but this
>>>> patch can work as an intermediate solution.
>>>
>>> I think bandgap is a generic enough term IMO.
>>>
>>> [1] - http://en.wikipedia.org/wiki/Bandgap_voltage_reference
>>> [2] - http://en.wikipedia.org/wiki/Silicon_bandgap_temperature_sensor
>>>
>>
>> Hit the send button too early. So, I think bandgap is a generic enough
>> term. Using bandgap I believe it is better because its meaning has the
>> implication of having a device to control thermal.
>>
>> But if you feel more confident with the thermal term we can switch to
>> something like HAS_THERMAL_CONTROL.
>
> Even in my case TMU uses bandgap voltage reference circuit. so
> ARCH_HAS_BANDGAP should be fine.
>
OK cool! then we have a consensus.
I am trying for some time already to push this patch here:
https://patchwork.kernel.org/patch/2659001/
Tony, Arnd?
Any objections having the patch above in?
> Thanks,
> Amit Daniel
>>
>>>
>>>>
>>>> Thanks,
>>>> Amit Daniel
>>>>>
>>>>>> * 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: Support thermal tripping
>>>>>> thermal: exynos: Move register definitions from driver file to data
>>>>>> file
>>>>>> 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 dependent on trip count
>>>>>> 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 support for exynos5440 TMU sensor.
>>>>>> thermal: exynos: Fix to set the second point correction value
>>>>>> properly
>>>>>> thermal: exynos: Add thermal configuration data for exynos5440 TMU
>>>>>> sensor
>>>>>> thermal: exynos: Add a compensation logic on swapped e-fuse values
>>>>>> 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 | 53 +
>>>>>> Documentation/thermal/exynos_thermal | 43 +-
>>>>>> arch/arm/boot/dts/exynos5440.dtsi | 30 +
>>>>>> arch/arm/mach-exynos/Kconfig | 5 +
>>>>>> drivers/thermal/Kconfig | 13 +-
>>>>>> drivers/thermal/Makefile | 2 +-
>>>>>> drivers/thermal/exynos_thermal.c | 1066 --------------------
>>>>>> drivers/thermal/samsung/Kconfig | 21 +
>>>>>> drivers/thermal/samsung/Makefile | 7 +
>>>>>> drivers/thermal/samsung/exynos_thermal_common.c | 407 ++++++++
>>>>>> drivers/thermal/samsung/exynos_thermal_common.h | 98 ++
>>>>>> drivers/thermal/samsung/exynos_tmu.c | 741 ++++++++++++++
>>>>>> drivers/thermal/samsung/exynos_tmu.h | 294 ++++++
>>>>>> drivers/thermal/samsung/exynos_tmu_data.c | 225 ++++
>>>>>> drivers/thermal/samsung/exynos_tmu_data.h | 155 +++
>>>>>> include/linux/platform_data/exynos_thermal.h | 119 ---
>>>>>> 16 files changed, 2076 insertions(+), 1203 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
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>> --
>> You have got to be excited about what you are doing. (L. Lamport)
>>
>> Eduardo Valentin
>>
>
>
--
You have got to be excited about what you are doing. (L. Lamport)
Eduardo Valentin
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