This patch adds the registers, bit fields and compatible strings
required to support for the 5 TMU channels on Exynos5260.
Signed-off-by: NNaveen Krishna Chatradhi <ch.naveen@samsung.com>
Signed-off-by: NEduardo Valentin <edubezval@gmail.com>

Exynos5420 has 5 TMU channels, the TRIMINFO register is
misplaced for TMU channels 2, 3 and 4
TRIMINFO at 0x1006c000 contains data for TMU channel 3
TRIMINFO at 0x100a0000 contains data for TMU channel 4
TRIMINFO at 0x10068000 contains data for TMU channel 2

This patch
1 Adds the neccessary register changes and arch information
   to support Exynos5420 SoCs.
2. Handles the gate clock for misplaced TRIMINFO register
3. Updates the Documentation at
   Documentation/devicetree/bindings/thermal/exynos-thermal.txt
Signed-off-by: NNaveen Krishna Chatradhi <ch.naveen@samsung.com>
Signed-off-by: NAndrew Bresticker <abrestic@chromium.org>
Acked-by: NAmit Daniel Kachhap <amit.daniel@samsung.com>
Reviewed-by: NBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: NTomasz Figa <t.figa@samsung.com>
Signed-off-by: NEduardo Valentin <edubezval@gmail.com>

On Exynos5440 and Exynos5420 there are registers common
across the TMU channels.

To support that, we introduced a ADDRESS_MULTIPLE flag in the
driver and the 2nd set of register base and size are provided
in the "reg" property of the node.

As per Amit's suggestion, this patch changes the base_common
to base_second and SHARED_MEMORY to ADDRESS_MULTIPLE.
Signed-off-by: NNaveen Krishna Chatradhi <ch.naveen@samsung.com>
Acked-by: NAmit Daniel Kachhap <amit.daniel@samsung.com>
Reviewed-by: NBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: NTomasz Figa <t.figa@samsung.com>
Signed-off-by: NEduardo Valentin <edubezval@gmail.com>

This patch replaces the inten_rise_shift/mask and inten_fall_shift/mask
with intclr_rise_shift/mask and intclr_fall_shift/mask respectively.
Currently, inten_rise_shift/mask and inten_fall_shift/mask bits are only used
to configure intclr related registers.

Description of H/W:
The offset for the bits in the CLEAR register are not consistent across TMU
modules in Exynso5250, 5420 and 5440.

On Exynos5250, the FALL interrupt related en, status and clear bits are
available at an offset of
16 in INTEN, INTSTAT registers and at an offset of
12 in INTCLEAR register.

On Exynos5420, the FALL interrupt related en, status and clear bits are
available at an offset of
16 in INTEN, INTSTAT and INTCLEAR registers.

On Exynos5440,
the FALL_IRQEN bits are at an offset of 4
and the RISE_IRQEN bits are at an offset of 0
Signed-off-by: NNaveen Krishna Chatradhi <ch.naveen@samsung.com>
Acked-by: NAmit Daniel Kachhap <amit.daniel@samsung.com>
Reviewed-by: NBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: NTomasz Figa <t.figa@samsung.com>
Signed-off-by: NEduardo Valentin <edubezval@gmail.com>

Set the return variable to an error code as done elsewhere in the function.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}

// </smpl>
Signed-off-by: NJulia Lawall <Julia.Lawall@lip6.fr>
Reviewed-by: NJingoo Han <jg1.han@samsung.com>
Signed-off-by: NZhang Rui <rui.zhang@intel.com>

The commit d0a0ce3e ("thermal: exynos: Add
missing definations and code cleanup") has removed setting of test MUX address
value at TMU configuration setting.

This field is not present on Exynos4210 and Exynos5 SoCs. However on Exynos4412
SoC it is required to set this field after reset because without it TMU shows
maximal available temperature, which causes immediate platform shutdown.
Signed-off-by: NLukasz Majewski <l.majewski@samsung.com>
Reviewed-by: NBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: NTomasz Figa <t.figa@samsung.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>

Up till now Exynos5250 and Exynos4412 had the same definitions for TMU
data. Following commit changes that, by introducing separate
exynos4412_default_tmu_data structure.

Since Exynos4412 was chronologically first, the corresponding name for
TMU registers and default data was renamed.

Additionally, new SOC_ARCH_EXYNOS4412 type has been defined.

Moreover, the SOC_ARCH_EXYNOS name has been changed to SOC_ARCH_EXYNOS5250.
Signed-off-by: NLukasz Majewski <l.majewski@samsung.com>
Reviewed-by: NBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: NTomasz Figa <t.figa@samsung.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>

Commit 1cd1ecb6 ("thermal: exynos: Remove non DT based support")
cleaned up some non-DT code. However, there were few more things
needed for complete cleanup to make this driver DT only.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>

The error check is checking for a "base" mapped memory base
instead of "base_common". Fixing the same.
Signed-off-by: NNaveen Krishna Chatradhi <ch.naveen@samsung.com>
Signed-off-by: NZhang Rui <rui.zhang@intel.com>

TMU probe function now checks for a device tree defined regulator.
For compatibility reasons it is allowed to probe driver even without
this regulator defined.
Acked-by: NJonghwa Lee <jonghwa3.lee@samsung.com>
Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NLukasz Majewski <l.majewski@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NAmit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>

This patch adds support for h/w mode calibration in the TMU controller.
Soc's like 5440 support this features. The h/w bits needed for calibration
setting are same as that of enum calibration_type.
Acked-by: NJonghwa Lee <jonghwa3.lee@samsung.com>
Acked-by: NKukjin Kim <kgene.kim@samsung.com>
Signed-off-by: NAmit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>

This patch sets the second point trimming value according to the platform
data if the register value is 0.
Acked-by: NJonghwa Lee <jonghwa3.lee@samsung.com>
Acked-by: NKukjin Kim <kgene.kim@samsung.com>
Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NAmit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>

This patch adds configuration data for exynos5440 soc. Also register
definations for the controller are added.
Acked-by: NJonghwa Lee <jonghwa3.lee@samsung.com>
Acked-by: NKukjin Kim <kgene.kim@samsung.com>
Signed-off-by: NAmit Daniel Kachhap <amit.daniel@samsung.com>
Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>

This patch modifies TMU controller to add changes needed to work with
exynos5440 platform. This sensor registers 3 instance of the tmu controller
with the thermal zone and hence reports 3 temperature output. This controller
supports upto five trip points. For critical threshold the driver uses the
core driver thermal framework for shutdown.
Acked-by: NJonghwa Lee <jonghwa3.lee@samsung.com>
Acked-by: NKukjin Kim <kgene.kim@samsung.com>
Signed-off-by: NJungseok Lee <jays.lee@samsung.com>
Signed-off-by: NAmit Daniel Kachhap <amit.daniel@samsung.com>
Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>

This patch adds support to parse one more common set of TMU register. First
set of register belongs to each instance of TMU and second set belongs to
common TMU registers.
Acked-by: NJonghwa Lee <jonghwa3.lee@samsung.com>
Acked-by: NKukjin Kim <kgene.kim@samsung.com>
Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NAmit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>

This patch adds several features supported by TMU as bitfields.
This features varies across different SOC type and comparing
the features present in the TMU is more logical than comparing
the soc itself.
Acked-by: NKukjin Kim <kgene.kim@samsung.com>
Acked-by: NJonghwa Lee <jonghwa3.lee@samsung.com>
Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NAmit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>

This patch adds support to handle multiple instances of the TMU controllers.
This is done by removing the static structure to register with the core thermal
and creating it dynamically for each instance of the TMU controller. The
interrupt is made shared type to handle shared interrupts. Now since the ISR needs
the core thermal framework to be registered so request_irq is moved after the core
registration is done.
Also the identifier of the TMU controller is extracted from device tree alias. This
will be used for TMU specific initialisation.
Acked-by: NKukjin Kim <kgene.kim@samsung.com>
Acked-by: NJonghwa Lee <jonghwa3.lee@samsung.com>
Signed-off-by: NAmit Daniel Kachhap <amit.daniel@samsung.com>
Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>

Recently non DT support from Exynos platform is removed and hence
removing non DT support from the driver also. This will help in easy
maintainence.
Acked-by: NJonghwa Lee <jonghwa3.lee@samsung.com>
Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NAmit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>

This code simplifies the zone handling to use the trip information passed
by the TMU driver and not the hardcoded macros. This also helps in adding
more zone support.
Acked-by: NKukjin Kim <kgene.kim@samsung.com>
Acked-by: NJonghwa Lee <jonghwa3.lee@samsung.com>
Signed-off-by: NAmit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>

This patch renames member private_data to driver_data of the thermal
zone registration structure as this item stores the driver related
data and uses it to call the driver related callbacks.
Acked-by: NKukjin Kim <kgene.kim@samsung.com>
Acked-by: NJonghwa Lee <jonghwa3.lee@samsung.com>
Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NAmit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>

This code modifies the thermal driver to have multiple thermal zone
support by replacing the global thermal zone variable with device data
member of thermal_zone_device.
Acked-by: NKukjin Kim <kgene.kim@samsung.com>
Acked-by: NJonghwa Lee <jonghwa3.lee@samsung.com>
Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NAmit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>

This patch uses the TMU status register to know the generated interrupts
and only clear them in the interrupt handler.
Acked-by: NKukjin Kim <kgene.kim@samsung.com>
Acked-by: NJonghwa Lee <jonghwa3.lee@samsung.com>
Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NAmit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>

TMU urgently sends active-high signal (thermal trip) to PMU, and thermal
tripping by hardware logic. Thermal tripping means that PMU cuts off the
whole power of SoC by controlling external voltage regulator.
Acked-by: NKukjin Kim <kgene.kim@samsung.com>
Acked-by: NJonghwa Lee <jonghwa3.lee@samsung.com>
Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NJonghwan Choi <jhbird.choi@samsung.com>
Signed-off-by: NAmit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>

This patch migrates the TMU register definition/bitfields to data file. This
is needed to support SoC's which use the same TMU controller but register
validity, offsets or bitfield may slightly vary across SOC's.
Acked-by: NKukjin Kim <kgene.kim@samsung.com>
Acked-by: NJonghwa Lee <jonghwa3.lee@samsung.com>
Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NAmit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>

This patch adds entries min_efuse_value, max_efuse_value, default_temp_offset,
trigger_type, cal_type, trim_first_point, trim_second_point, max_trigger_level
trigger_enable in the TMU platform data structure. Also the driver is modified
to use the data passed by these new platform memebers instead of the constant
macros. All these changes helps in separating the SOC specific data part from
the TMU driver.
Acked-by: NKukjin Kim <kgene.kim@samsung.com>
Acked-by: NJonghwa Lee <jonghwa3.lee@samsung.com>
Signed-off-by: NAmit Daniel Kachhap <amit.daniel@samsung.com>
Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>

This patch adds some extra register bitfield definations and cleans
up the code to prepare for moving register macros and definations inside
the TMU data section. In this code cleanup the TMU enable bit is correctly used
as bit0 and bit1 is taken care which is reserve bit.
Acked-by: NKukjin Kim <kgene.kim@samsung.com>
Acked-by: NJonghwa Lee <jonghwa3.lee@samsung.com>
Signed-off-by: NAmit Daniel Kachhap <amit.daniel@samsung.com>
Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>

This code splits the exynos tmu driver code into SOC specific data parts.
This will simplify adding new SOC specific data to the same TMU controller.
Acked-by: NKukjin Kim <kgene.kim@samsung.com>
Acked-by: NJonghwa Lee <jonghwa3.lee@samsung.com>
Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NAmit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>

This patch renames and moves include/linux/platform_data/exynos_thermal.h to
drivers/thermal/samsung/exynos_tmu.h. This file movement is needed as exynos
SOC's are not supporting non-DT based platforms and this file now just contains
exynos tmu driver related definations.
Also struct freq_clip_table is now moved to exynos_thermal_common.c as it fixes
the compilation issue occuring because now this new tmu header file is included
in tmu driver c file and not in the common thermal header file.
Acked-by: NKukjin Kim <kgene.kim@samsung.com>
Acked-by: NJonghwa Lee <jonghwa3.lee@samsung.com>
Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NAmit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>

This patch renames exynos_thermal.c to exynos_tmu.c. This change is needed as
this file now just contains exynos tmu driver related codes and thermal zone
or cpufreq cooling registration related changes are not there anymore.
Acked-by: NKukjin Kim <kgene.kim@samsung.com>
Acked-by: NJonghwa Lee <jonghwa3.lee@samsung.com>
Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NAmit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>

This code bifurcates exynos thermal implementation into common and sensor
specific parts. The common thermal code interacts with core thermal layer and
core cpufreq cooling parts and is independent of SOC specific driver. This
change is needed to cleanly add support for new TMU sensors.
Acked-by: NKukjin Kim <kgene.kim@samsung.com>
Acked-by: NJonghwa Lee <jonghwa3.lee@samsung.com>
Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NAmit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>

This movement of files is done for easy maintenance and adding more
new sensor's support for exynos platform easily . This will also help in
bifurcating exynos common, sensor driver and sensor data related parts.
Acked-by: NKukjin Kim <kgene.kim@samsung.com>
Acked-by: NJonghwa Lee <jonghwa3.lee@samsung.com>
Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NAmit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>

EXYNOS4212 and EXYNOS4412 have the same thermal block, so there is no
reason to include support only for EXYNOS4412 in this driver.

Cc: linux-pm@vger.kernel.org
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NTomasz Figa <t.figa@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

devm_ioremap_resource does sanity checks on the given resource. No need to
duplicate this in the driver.
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>
Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NZhang Rui <rui.zhang@intel.com>

devm_ioremap_resource does sanity checks on the given resource. No need to
duplicate this in the driver.
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>

Commit 0998d063 (device-core: Ensure drvdata = NULL when no
driver is bound) removes the need to set driver data field to
NULL.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NZhang Rui <rui.zhang@intel.com>

Added compatible string for Exynos4412 SoC.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Cc: Amit Daniel Kachhap <amit.daniel@samsung.com>
Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NZhang Rui <rui.zhang@intel.com>

clk_{un}prepare APIs are required to migrate to common
clock framework. While at it convert to use devm_clk_get as
it removes some cleanup code.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Cc: Amit Daniel Kachhap <amit.daniel@samsung.com>
Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NZhang Rui <rui.zhang@intel.com>

In multiplatform configurations, we cannot include headers
provided by only the exynos platform. Fortunately a number
of drivers that include those headers do not actually need
them, so we can just remove the inclusions.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
Cc: Zhang Rui <rui.zhang@intel.com>

In multiplatform configurations, we cannot include headers
provided by only the exynos platform. Fortunately a number
of drivers that include those headers do not actually need
them, so we can just remove the inclusions.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Cc: linux-pm@vger.kernel.org
Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NZhang Rui <rui.zhang@intel.com>

This removes the driver specific sysfs support of the temperature
emulation and uses the newly added core thermal framework for thermal
emulation. An exynos platform specific handler is added to support this.

In this patch, the exynos senor(tmu) related code and exynos framework
related (thermal zone, cooling devices) code are intentionally kept separate.
So an emulated function pointer is passed from sensor to framework. This is
beneficial in adding more sensor support using the same framework code
which is an ongoing work. The goal is to finally split them totally. Even
the existing read_temperature also follows the same execution method.
Acked-by: NKukjin Kim <kgene.kim@samsung.com>
Signed-off-by: NAmit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: NZhang Rui <rui.zhang@intel.com>