06 Jan, 2019
1 commit
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Pull thermal SoC updates from Eduardo Valentin:
- Tegra DT binding documentation for Tegra194
- Armada now supports ap806 and cp110
- RCAR thermal now supports R8A774C0 and R8A77990
- Fixes on thermal_hwmon, IMX, generic-ADC, ST, RCAR, Broadcom,
Uniphier, QCOM, Tegra, PowerClamp, and Armada thermal drivers.* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal: (22 commits)
thermal: generic-adc: Fix adc to temp interpolation
thermal: rcar_thermal: add R8A77990 support
dt-bindings: thermal: rcar-thermal: add R8A77990 support
thermal: rcar_thermal: add R8A774C0 support
dt-bindings: thermal: rcar-thermal: add R8A774C0 support
dt-bindings: cp110: document the thermal interrupt capabilities
dt-bindings: ap806: document the thermal interrupt capabilities
MAINTAINERS: thermal: add entry for Marvell MVEBU thermal driver
thermal: armada: add overheat interrupt support
thermal: st: fix Makefile typo
thermal: uniphier: Convert to SPDX identifier
thermal/intel_powerclamp: Change to use DEFINE_SHOW_ATTRIBUTE macro
thermal: tegra: soctherm: Change to use DEFINE_SHOW_ATTRIBUTE macro
dt-bindings: thermal: tegra-bpmp: Add Tegra194 support
thermal: imx: save one condition block for normal case of nvmem initialization
thermal: imx: fix for dependency on cpu-freq
thermal: tsens: qcom: do not create duplicate regmap debugfs entries
thermal: armada: Use PTR_ERR_OR_ZERO in armada_thermal_probe_legacy()
dt-bindings: thermal: rcar-gen3-thermal: All variants use 3 interrupts
thermal: broadcom: use devm_thermal_zone_of_sensor_register
...
02 Jan, 2019
2 commits
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The IP can manage to trigger interrupts on overheat situation from all
the sensors.However, the interrupt source changes along with the last selected
source (ie. the last read sensor), which is an inconsistent behavior.
Avoid possible glitches by always selecting back only one channel which
will then be referenced as the "overheat_sensor" (arbitrarily: the first
in the DT which has a critical trip point filled in).It is possible that the scan of all thermal zone nodes did not bring a
critical trip point from which the overheat interrupt could be
configured. In this case just complain but do not fail the probe.Also disable sensor switch during overheat situations because changing
the channel while the system is too hot could clear the overheat state
by changing the source while the temperature is still very high.Even if the overheat state is not declared, overheat interrupt must be
cleared by reading the DFX interrupt cause _after_ the temperature has
fallen down to the low threshold, otherwise future possible interrupts
would not be served. A work polls the corresponding register until the
overheat flag gets cleared in this case.Suggested-by: David Sniatkiwicz
Signed-off-by: Miquel Raynal
Signed-off-by: Eduardo Valentin -
Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR
Signed-off-by: YueHaibing
Reviewed-by: Daniel Lezcano
Signed-off-by: Eduardo Valentin
05 Dec, 2018
3 commits
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The thermal_zone_of_device_ops structure can be const as it is only
passed as the last argument of devm_thermal_zone_of_sensor_register
and the corresponding parameter is declared as const.Done with the help of Coccinelle.
Signed-off-by: Julia Lawall
Reviewed-by: Daniel Lezcano
Signed-off-by: Eduardo Valentin -
When the armada thermal module is inserted, removed and then reinserted,
the system panics as per the messages below. The reason is that "edit"
a live resource in the resource tree twice, and end up with it pointing
to some other hardware.Editing live resources (resources that are part of the registered
resource tree) is not permissible - the resource tree is an ordered
set of resources, sorted by start address, and when a new resource is
inserted, it is validated that it (a) fits within its parent resource
and (b) does not overlap a neighbouring resource.Get rid of this resource editing. We can instead adjust the return
value from ioremap() as ioremap() deals with the creation of page-
based mappings - provided the adjustment does not cross a page
boundary.SError Interrupt on CPU1, code 0xbf000000 -- SError
CPU: 1 PID: 2749 Comm: modprobe Not tainted 4.19.0+ #175
Hardware name: Marvell 8040 MACCHIATOBin Double shot (DT)
pstate: 20400085 (nzCv daIf +PAN -UAO)
pc : regmap_mmio_read+0x3c/0x60
lr : regmap_mmio_read+0x3c/0x60
sp : ffffff800d453900
x29: ffffff800d453900 x28: ffffff800096a1d0
x27: 0000000000000100 x26: ffffff80009696d8
x25: ffffff8000969000 x24: ffffffc13a588918
x23: ffffffc13a9a28a8 x22: ffffff800d4539dc
x21: 0000000000000084 x20: ffffff800d4539dc
x19: ffffffc13a5d5480 x18: 0000000000000000
x17: 0000000000000000 x16: 0000000000000000
x15: 0000000000000000 x14: 0000000000000000
x13: 0000000000000000 x12: 0000000000000030
x11: 0101010101010101 x10: 7f7f7f7f7f7f7f7f
x9 : 0000000000000000 x8 : ffffffc13a5d5a80
x7 : 0000000000000000 x6 : 000000000000003f
x5 : 0000000000000000 x4 : 0000000000000000
x3 : ffffff800851be70 x2 : ffffff800851bd60
x1 : ffffff800d492ff8 x0 : 0000000000000000
Kernel panic - not syncing: Asynchronous SError Interrupt
CPU: 1 PID: 2749 Comm: modprobe Not tainted 4.19.0+ #175
Hardware name: Marvell 8040 MACCHIATOBin Double shot (DT)
Call trace:
dump_backtrace+0x0/0x158
show_stack+0x14/0x1c
dump_stack+0x90/0xb0
panic+0x128/0x298
print_tainted+0x0/0xa8
arm64_serror_panic+0x74/0x80
do_serror+0x5c/0xb8
el1_error+0xb4/0x144
regmap_mmio_read+0x3c/0x60
_regmap_bus_reg_read+0x18/0x20
_regmap_read+0x64/0x180
regmap_read+0x44/0x6c
armada_ap806_init+0x24/0x5c [armada_thermal]
armada_thermal_probe+0x2c8/0x37c [armada_thermal]
platform_drv_probe+0x4c/0xb0
really_probe+0x21c/0x2b4
driver_probe_device+0x58/0xfc
__driver_attach+0xd4/0xd8
bus_for_each_dev+0x50/0xa0
driver_attach+0x20/0x28
bus_add_driver+0x1c4/0x228
driver_register+0x6c/0x124
__platform_driver_register+0x4c/0x54
armada_thermal_driver_init+0x20/0x1000 [armada_thermal]
do_one_initcall+0x30/0x204
do_init_module+0x5c/0x1d4
load_module+0x1a88/0x212c
__se_sys_finit_module+0xa0/0xac
__arm64_sys_finit_module+0x1c/0x24
el0_svc_common+0x94/0xf0
el0_svc_handler+0x24/0x80
el0_svc+0x8/0x3c0
SMP: stopping secondary CPUs
Kernel Offset: disabled
CPU features: 0x0,21806000
Memory Limit: noneSigned-off-by: Russell King
Tested-by: Miquel Raynal
Signed-off-by: Eduardo Valentin -
Commit 8c0e64ac4075 ("thermal: armada: get rid of the ->is_valid()
pointer") removed the unnecessary indirection through a function
pointer, but in doing so, also removed the negation operator too:- if (priv->data->is_valid && !priv->data->is_valid(priv)) {
+ if (armada_is_valid(priv)) {which results in:
armada_thermal f06f808c.thermal: Temperature sensor reading not valid
armada_thermal f2400078.thermal: Temperature sensor reading not valid
armada_thermal f4400078.thermal: Temperature sensor reading not validat boot, or whenever the "temp" sysfs file is read. Replace the
negation operator.Fixes: 8c0e64ac4075 ("thermal: armada: get rid of the ->is_valid() pointer")
Signed-off-by: Russell King
Signed-off-by: Eduardo Valentin
23 Oct, 2018
1 commit
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The platform_get_resource() function doesn't return error pointers, it
returns NULL on error.Fixes: 3d4e51844a4e ("thermal: armada: convert driver to syscon register accesses")
Signed-off-by: Dan Carpenter
Reviewed-by: Miquel Raynal
Signed-off-by: Eduardo Valentin
02 Aug, 2018
1 commit
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The return value from devm_kzalloc() is not checked correctly. The
test is done against a wrong variable. Fix it.Fixes: e72f03ef2543 ("thermal: armada: use the resource managed registration helper alternative")
Signed-off-by: Wei Yongjun
Reviewed-by: Daniel Lezcano
Reviewed-by: Miquel Raynal
Signed-off-by: Eduardo Valentin
28 Jul, 2018
12 commits
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The implementation of armada_is_valid() is very simple and is the same
across all the versions of the IP since the ->is_valid_bit has been
introduced. Simplify the structure by getting rid of the function
pointer and calling directly the function.Signed-off-by: Miquel Raynal
Signed-off-by: Eduardo Valentin -
Sensor selection when using multiple sensors already checks for the
sensor validity. Move it to the legacy ->get_temp() hook, where it is
still needed.Signed-off-by: Miquel Raynal
Signed-off-by: Eduardo Valentin -
When using new bindings with multiple sensors, sensor validity is
checked twice because sensor selection also checks for the validity.Remove the redundant call from the IP initialization helper and move it
to the legacy probe section where it is still needed.Signed-off-by: Miquel Raynal
Signed-off-by: Eduardo Valentin -
MVEBU thermal IP supports multiple channels. Each channel may have
several sensors but for now each channel is wired to only one thermal
sensor. The first channel always points to the so called internal
sensor, within the thermal IP. There is usually one more channel (with
one sensor each time) per CPU. The code has been written to support
possible evolutions of the ap806 IP that would embed more CPUs and thus
more channels to select. Each channel should be referenced in the device
tree as an independent thermal zone.Add the possibility to read each of these sensors through sysfs by
registering all the sensors (translated in "thermal_zone"). Also add a
mutex on these accesses to avoid read conflicts (only one channel/sensor
may be selected and read at a time).Signed-off-by: Miquel Raynal
Signed-off-by: Eduardo Valentin -
Current use of thermal_zone_device_register() triggers a warning at boot
and should be replaced by devm_thermal_zone_of_sensor_register(). This
allows better handling of multiple thermal zones for later multi-sensors
support.Also change the driver data to embed a new structure to make the
difference between legacy data (which needs to be cleaned) and
syscon-related data.Signed-off-by: Miquel Raynal
Signed-off-by: Eduardo Valentin -
Until recently, only one register was referenced in MVEBU thermal IP
node. Recent changes added a second entry pointing to another
register right next to it. We cannot know for sure that we will not
have to access other registers. That will be actually the case when
overheat interrupt feature will come, where it will be needed to access
DFX registers in the same area.This approach is not scalable so instead of adding consinuously memory
areas in the DT (and change the DT bindings, while keeping backward
compatibility), move the thermal node into a wider syscon from which it
will be possible to also configure the thermal interrupt.Signed-off-by: Miquel Raynal
Signed-off-by: Eduardo Valentin -
Configure the sample frequency and number of averaged samples.
This is needed for two reasons:
1/ To be bootloader independent.
2/ To prepare the introduction of multi-sensors support by preventing
inconsistencies when reading temperatures that could be a mean of
samples took from different sensors.Signed-off-by: Miquel Raynal
Signed-off-by: Eduardo Valentin -
Until now, Armada 380 and CP110 could share the same ->init() function
because their use was identical.Prepare the support of multi-sensors support and overheat interrupt
feature by separating the initialization paths before they actually
diverge.Signed-off-by: Miquel Raynal
Signed-off-by: Eduardo Valentin -
Calling a hook ->init_sensor() while what is initialized is the IP
itself and not the sensors is misleading. Rename the hook ->init() to
avoid any confusion in later work bringing multi-sensors support.Signed-off-by: Miquel Raynal
Signed-off-by: Eduardo Valentin -
On older versions of this thermal IP, TSEN referred as the internal
sensor in the thermal IP while EXT_TSEN referred as sensors outside of
this IP, ie in the CPUs most of the time. The bit names in the
specifications do not follow this rule anymore, so remove these comments
that are misleading.Signed-off-by: Miquel Raynal
Signed-off-by: Eduardo Valentin -
Prepare the migration to use regmaps by first simplifying the
initialization functions: avoid unnecessary write/read cycles on
configuration registers.Signed-off-by: Miquel Raynal
Signed-off-by: Eduardo Valentin -
Thermal zone names must follow certain rules imposed by the framework.
They are limited in length and shall not have any hyphen '-'.This is done in a separate function for future use in another location.
Signed-off-by: Miquel Raynal
Signed-off-by: Eduardo Valentin
02 Jan, 2018
10 commits
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After registration to the thermal core, sysfs will make one entry
per instance of the driver in /sys/class/thermal_zoneX and
/sys/class/hwmon/hwmonX, X being the index of the instance, all of them
having the type/name "armada_thermal".Until now there was only one thermal zone per SoC but SoCs like Armada
A7K and Armada A8K have respectively two and three thermal zones (one
per AP and one per CP) and this number is subject to grow in the future.Use dev_name() instead of the "armada_thermal" string to get a
meaningful name and be able to identify the thermal zones from
userspace.Signed-off-by: Miquel Raynal
Reviewed-by: Gregory CLEMENT
Tested-by: Gregory CLEMENT
Signed-off-by: Eduardo Valentin -
The thermal core will check for sensors validity right after the
initialization callback has returned. As the initialization routine make
a reset, the sensors are not ready immediately and the core spawns an
error in the dmesg. Avoid this annoying situation by polling on the
validity bit before exiting from these routines. This also avoid the use
of blind sleeps.Suggested-by: David Sniatkiwicz
Signed-off-by: Miquel Raynal
Reviewed-by: Gregory CLEMENT
Signed-off-by: Eduardo Valentin -
Errata #132698 highlights an error in the default value of Tc trim.
Set this parameter to b'011.Suggested-by: David Sniatkiwicz
Signed-off-by: Miquel Raynal
Reviewed-by: Gregory CLEMENT
Signed-off-by: Eduardo Valentin -
Update Armada thermal driver Kconfig entry as well as the driver's
MODULE_DESCRIPTION content, now that 64-bit SoCs are also supported,
eg. Armada 7K and Armada 8K.Use the generic term "Marvell EBU Armada SoCs" instead of listing all
the supported SoCs everywhere (excepted in the Kconfig description,
where it is useful to have a list).Signed-off-by: Miquel Raynal
Reviewed-by: Gregory CLEMENT
Signed-off-by: Eduardo Valentin -
The CP110 component is integrated in the Armada 8k and 7k lines of
processors.Signed-off-by: Baruch Siach
[: renamed the register pointers as
well as some definitions related to the new register names and
simplified the init sequence for Armada 380]
Signed-off-by: Miquel Raynal
Reviewed-by: Gregory CLEMENT
Tested-by: Gregory CLEMENT
Signed-off-by: Eduardo Valentin -
The AP806 component is integrated in the Armada 8K and 7K lines of
processors.The thermal sensor sample field on the status register is a signed
value. Extend armada_get_temp() and the driver structure to handle
signed values.Signed-off-by: Baruch Siach
[: Changes when applying over the
previous patches, including the register names changes, also switched
the coefficients values to s64 instead of unsigned long to deal with
negative values and used do_div instead of the traditionnal '/']
Signed-off-by: Miquel Raynal
Reviewed-by: Gregory CLEMENT
Tested-by: Gregory CLEMENT
Signed-off-by: Eduardo Valentin -
Three 32-bit registers are used to drive the thermal IP: control0,
control1 and status. The two control registers share the same name both
in the documentation and in the code, while the latter is referred as
"sensor" in the code. Rename this pointer to be called "status" in order
to be aligned with the documentation.Signed-off-by: Miquel Raynal
Reviewed-by: Gregory CLEMENT
Signed-off-by: Eduardo Valentin -
Bindings were incomplete for a long time by only exposing one of the two
available control registers. To ease the migration to the full bindings
(already in use for the Armada 375 SoC), rename the pointers for
clarification. This way, it will only be needed to add another pointer
to access the other control register when the time comes.This avoids dangerous situations where the offset 0 of the control
area can be either one register or the other depending on the bindings
used. After this change, device trees of other SoCs could be migrated to
the "full" bindings if they may benefit from features from the
unaccessible register, without any change in the driver.Signed-off-by: Miquel Raynal
Reviewed-by: Gregory CLEMENT
Tested-by: Gregory CLEMENT
Signed-off-by: Eduardo Valentin -
All Armada SoCs use one bit to declare if the sensor values are valid.
This bit moves across the versions of the IP.The method until then was to do both a shift and compare with an useless
flag of "0x1". It is clearer and quicker to directly save the value that
must be ANDed instead of the bit position and do a single bitwise AND
operation.Signed-off-by: Miquel Raynal
Reviewed-by: Gregory CLEMENT
Signed-off-by: Eduardo Valentin -
Use msleep for long (> 10ms) delays, instead of the busy waiting mdelay.
All delays are called from the probe routine, where scheduling is
allowed.Signed-off-by: Baruch Siach
Signed-off-by: Miquel Raynal
Reviewed-by: Gregory CLEMENT
Signed-off-by: Eduardo Valentin
01 Nov, 2017
1 commit
-
The formula implementation at armada_get_temp() indicates that the sign
in the formula is inverted.Cc: Ezequiel Garcia
Signed-off-by: Baruch Siach
Signed-off-by: Eduardo Valentin
31 Oct, 2015
1 commit
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Update the coefficients so the calculation will not overrun the
unsigned long 32bits boundarySigned-off-by: Nadav Haklai
Reviewed-by: Victor Axelrod
Reviewed-by: Neta Zur Hershkovits
Signed-off-by: Gregory CLEMENT
Signed-off-by: Eduardo Valentin
03 Aug, 2015
1 commit
-
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
09 May, 2015
1 commit
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Improve the Armada 380 thermal sensor accuracy by using updated formula.
The updated formula is:
Temperature[C degrees] = 0.4761 * tsen_vsen_out - 279.1Signed-off-by: Nadav Haklai
Signed-off-by: Gregory CLEMENT
Cc: #v3.16
Signed-off-by: Eduardo Valentin
18 Dec, 2014
1 commit
-
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
...
25 Nov, 2014
1 commit
-
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
20 Oct, 2014
1 commit
-
A platform_driver does not need to set an owner, it will be populated by the
driver core.Signed-off-by: Wolfram Sang
15 May, 2014
3 commits
-
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 -
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 -
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