Some systems don't always populate sensor controller slots starting
at slot 0. Use a bitmap instead of a count to indicate valid sensor
slots. Also create a pretty iterator for that.
About that iterator: it causes checkpatch to complain with "ERROR:
Macros with multiple statements should be enclosed in a do - while
loop". However this is not possible here. And many similar iterators
do exist using the same form in the tree already.
Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20240402032729.2736685-12-nico@fluxnic.net
The golden temperature calibration value in nvram is not always the
3rd byte. A future commit will prove this assumption wrong.
Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20240402032729.2736685-11-nico@fluxnic.net
Current code assumes calibration values are always stored contiguously
in host endian order. A future patch will prove this wrong.
Let's specify the offset for each calibration byte instead.
Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20240402032729.2736685-5-nico@fluxnic.net
All the .hw_tshut_temp instances are initialized with the same value.
Let's remove those and use a common definition instead. If ever a
different value must be used in the future then an override parameter
could be added back.
Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20240402032729.2736685-4-nico@fluxnic.net
Move efuse data interpretation inside lvts_golden_temp_init() alongside
the actual code retrieving wanted value.
Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20240402032729.2736685-3-nico@fluxnic.net
Calibration values are 24-bit wide. Those values so far appear to span
only 16 bits but let's not push our luck.
Found while looking at the original Mediatek driver code.
Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20240402032729.2736685-2-nico@fluxnic.net
compute_intercept_slope() is called from calibrate_8960() (in tsens-8960.c)
as compute_intercept_slope(priv, p1, NULL, ONE_PT_CALIB) which lead to null
pointer dereference (if DEBUG or DYNAMIC_DEBUG set).
Fix this bug by adding null pointer check.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: dfc1193d4d ("thermal/drivers/tsens: Replace custom 8960 apis with generic apis")
Signed-off-by: Aleksandr Mishin <amishin@t-argos.ru>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20240411114021.12203-1-amishin@t-argos.ru
In order for lvts_raw_to_temp to function properly on mt8192,
temperature coefficients for mt8192 need to be added.
Fixes: 288732242d ("thermal/drivers/mediatek/lvts_thermal: Add mt8192 support")
Signed-off-by: Hsin-Te Yuan <yuanhsinte@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20240416-lvts_thermal-v2-1-f8a36882cc53@chromium.org
The initial driver used a formula to approximate the temperature and
register values reversed engineered from an out-of-tree BSP driver. This
was needed as the datasheet at the time did not contain any information
on how to do this. Later Gen3 (Rev 2.30) and Gen4 (all) now contains
this information.
Update the approximation formula to use the datasheet's information
instead of the reversed-engineered one.
On an idle M3-N without fused calibration values for PTAT and THCODE the
old formula reports,
zone0: 52000
zone1: 53000
zone2: 52500
While the new formula under the same circumstances reports,
zone0: 52500
zone1: 54000
zone2: 54000
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20240327133013.3982199-3-niklas.soderlund+renesas@ragnatech.se
The calculated Tj_T constant is calculated from the PTAT data either
read from the first TSC zone on the device if calibration data is fused,
or from fallback values in the driver itself. The value calculated is
shared among all TSC zones.
Move the Tj_T constant to the shared private data structure instead of
duplicating it in each TSC private data. This requires adding a pointer
to the shared data to the TSC private data structure. This back pointer
make it easier to further rework the temperature conversion logic.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20240327133013.3982199-2-niklas.soderlund+renesas@ragnatech.se
In comparison to other Amlogic chips, there is one key difference.
The offset for the sec_ao base, also known as u_efuse_off, is special,
while other aspects remain the same.
Signed-off-by: Dmitry Rokosov <ddrokosov@salutedevices.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20240328191322.17551-3-ddrokosov@salutedevices.com
As part of suspend to RAM, tsens hardware will be turned off.
While resume callback, re-initialize tsens hardware.
Signed-off-by: Priyansh Jain <quic_priyjain@quicinc.com>
Acked-by: Amit Kucheria <amitk@kernel.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20240328050230.31770-1-quic_priyjain@quicinc.com
Simplify the code by using the helper we have for doing exactly this.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20240320104940.65031-1-linux@rasmusvillemoes.dk
Up until now, the necessary scm availability check has not been
performed, leading to possible null pointer dereferences (which did
happen for me on RB1).
Fix that.
Fixes: 53bca371cd ("thermal/drivers/qcom: Add support for LMh driver")
Cc: <stable@vger.kernel.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20240308-topic-rb1_lmh-v2-2-bac3914b0fe3@linaro.org
The count field in struct trip_stats, representing the number of times
the zone temperature was above the trip point, needs to be incremented
in thermal_debug_tz_trip_up(), for two reasons.
First, if a trip point is crossed on the way up for the first time,
thermal_debug_update_temp() called from update_temperature() does
not see it because it has not been added to trips_crossed[] array
in the thermal zone's struct tz_debugfs object yet. Therefore, when
thermal_debug_tz_trip_up() is called after that, the trip point's
count value is 0, and the attempt to divide by it during the average
temperature computation leads to a divide error which causes the kernel
to crash. Setting the count to 1 before the division by incrementing it
fixes this problem.
Second, if a trip point is crossed on the way up, but it has been
crossed on the way up already before, its count value needs to be
incremented to make a record of the fact that the zone temperature is
above the trip now. Without doing that, if the mitigations applied
after crossing the trip cause the zone temperature to drop below its
threshold, the count will not be updated for this episode at all and
the average temperature in the trip statistics record will be somewhat
higher than it should be.
Fixes: 7ef01f228c ("thermal/debugfs: Add thermal debugfs information for mitigation episodes")
Cc :6.8+ <stable@vger.kernel.org> # 6.8+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Notice that struct thermal_governor is only used by the thermal core
and so move its definition to thermal_core.h.
No functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
If multiple trip points are crossed in one go and the trips table in
the thermal zone device object is not sorted, the corresponding trip
point crossing notifications sent to user space will not be ordered
either.
Moreover, if the trips table is sorted by trip temperature in ascending
order, the trip crossing notifications on the way up will be sent in that
order too, but the trip crossing notifications on the way down will be
sent in the reverse order.
This is generally confusing and it is better to make the kernel send the
notifications in the order of growing (on the way up) or falling (on the
way down) trip temperature.
To achieve that, instead of sending a trip crossing notification and
recording a trip crossing event in the statistics right away from
handle_thermal_trip(), put the trip in question on a list that will be
sorted by __thermal_zone_device_update() after processing all of the trips
and before sending the notifications and recording trip crossing events.
Link: https://lore.kernel.org/linux-pm/20240306085428.88011-1-daniel.lezcano@linaro.org/
Reported-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
If a trip point is already exceeded by the zone temperature at the
initialization time, no trip crossing notification is send regarding
this even though mitigation should be started then.
Address this by rearranging the code in handle_thermal_trip() to
send a trip crossing notification for trip points already exceeded
by the zone temperature initially which also allows to reduce its
size by using the observation that the initialization and regular
trip crossing on the way up become the same case then.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Make the comments regarding trip crossing and threshold updates in
handle_thermal_trip() slightly more clear.
No functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Move the definitions of struct thermal_trip_desc and struct
thermal_zone_device to an internal header file in the thermal core,
as they don't need to be accessible to any code other than the thermal
core and so they don't need to be present in a global header.
No intentional functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
The threshold field in struct thermal_trip is only used internally by
the thermal core and it is better to prevent drivers from misusing it.
It also takes some space unnecessarily in the trip tables passed by
drivers to the core during thermal zone registration.
For this reason, introduce struct thermal_trip_desc as a wrapper around
struct thermal_trip, move the threshold field directly into it and make
the thermal core store struct thermal_trip_desc objects in the internal
thermal zone trip tables. Adjust all of the code using trip tables in
the thermal core accordingly.
No intentional functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Make it more clear from the code flow that the passive polling status
updates only take place for passive trip points.
No intentional functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
The step-wise governor's get_target_state() function contains redundant
braces, redundant parens and a redundant next_target local variable, so
get rid of all that stuff.
No intentional functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
IPA probe function was recently refactored to perform extra error checks
and make sure the thermal zone has trip points necessary for the IPA
operation. With this change, if a thermal zone is probed such that it
has no trip points that IPA can use, IPA will fail and the TZ won't be
created. This is the case if a platform defines a TZ without cooling
devices and only with "hot"/"critical" trip points, often found on some
Qualcomm devices [1].
Documentation across IPA code (notably get_governor_trips() kerneldoc)
suggests that IPA is supposed to handle such TZ even if it won't
actually do anything.
This commit partially reverts the previous change to allow IPA to bind
to such "empty" thermal zones.
Fixes: e83747c2f8 ("thermal: gov_power_allocator: Set up trip points earlier")
Link: arch/arm64/boot/dts/qcom/sc7180.dtsi#n4776 # [1]
Signed-off-by: Nikita Travkin <nikita@trvn.ru>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
IPA was recently refactored to split out memory allocation into a
separate funciton. That funciton was made to return -EINVAL if there is
zero power_actors and thus no memory to allocate. This causes IPA to
fail probing when the thermal zone has no attached cooling devices.
Since cooling devices can attach after the thermal zone is created and
the governer is attached to it, failing probe due to the lack of cooling
devices is incorrect.
Change the allocate_actors_buffer() to return success when there is no
cooling devices present.
Fixes: 912e97c67c ("thermal: gov_power_allocator: Move memory allocation out of throttle()")
Signed-off-by: Nikita Travkin <nikita@trvn.ru>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The issue occurs when the devfreq cooling device uses the EM power model
and the get_real_power() callback is provided by the driver.
The EM power table is sorted ascending，can't index the table by cooling
device state，so convert cooling state to performance state by
dfc->max_state - dfc->capped_state.
Fixes: 615510fe13 ("thermal: devfreq_cooling: remove old power model and use EM")
Cc: 5.11+ <stable@vger.kernel.org> # 5.11+
Signed-off-by: Ye Zhang <ye.zhang@rock-chips.com>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
strncpy() is deprecated for use on NUL-terminated destination strings
[1] and as such we should prefer more robust and less ambiguous string
interfaces.
psvt->limit.string can only be 8 bytes so let's use the appropriate size
macro ACPI_LIMIT_STR_MAX_LEN.
Neither psvt->limit.string or psvt_user[i].limit.string requires the
NUL-padding behavior that strncpy() provides as they have both been
filled with NUL-bytes prior to the string operation.
| memset(&psvt->limit, 0, sizeof(u64));
and
| psvt_user = kzalloc(psvt_len, GFP_KERNEL);
Let's use `strscpy` [2] due to the fact that it guarantees
NUL-termination on the destination buffer without unnecessarily
NUL-padding.
Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings # [1]
Link: https://manpages.debian.org/testing/linux-manual-4.8/strscpy.9.en.html [2]
Link: https://github.com/KSPP/linux/issues/90
Signed-off-by: Justin Stitt <justinstitt@google.com>
Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Enable and disable hardware feedback interface (HFI) when user space
handler is present. For example, enable HFI, when intel-speed-select or
Intel Low Power daemon is running and subscribing to thermal netlink
events. When user space handlers exit or remove subscription for
thermal netlink events, disable HFI.
Summary of changes:
- Register a thermal genetlink notifier
- In the notifier, process THERMAL_NOTIFY_BIND and THERMAL_NOTIFY_UNBIND
reason codes to count number of thermal event group netlink multicast
clients. If thermal netlink group has any listener enable HFI on all
packages. If there are no listener disable HFI on all packages.
- When CPU is online, instead of blindly enabling HFI, check if
the thermal netlink group has any listener. This will make sure that
HFI is not enabled by default during boot time.
- Actual processing to enable/disable matches what is done in
suspend/resume callbacks. Create two functions hfi_enable_instance()
and hfi_disable_instance(), which can be called from the netlink
notifier callback and suspend/resume callbacks.
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Almost all thermal netlink structures use thermal_genl prefix.
Change thermal_gnl_family name accordingly for consistency.
No functional impact.
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Introduce a new feature to the thermal netlink framework, enabling the
registration of sub drivers to receive events via a notifier mechanism.
Specifically, implement genetlink family bind and unbind callbacks to send
BIND and UNBIND events.
The primary purpose of this enhancement is to facilitate the tracking of
user-space consumers by the Intel HFI driver. By leveraging these
notifications, the driver can determine when consumers are present
or absent.
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
It has been reported the commit cf3986f8c0 introduced a regression
when the temperature is wavering in the hysteresis region. The
mitigation stops leading to an uncontrolled temperature increase until
reaching the critical trip point.
Here what happens:
* 'throttle' is when the current temperature is greater than the trip
point temperature
* 'target' is the mitigation level
* 'passive' is positive when there is a mitigation, zero otherwise
* these values are computed in the step_wise governor
Configuration:
trip point 1: temp=95°C, hyst=5°C (passive)
trip point 2: temp=115°C, hyst=0°C (critical)
governor: step_wise
1. The temperature crosses the way up the trip point 1 at 95°C
- trend=raising
- throttle=1, target=1
- passive=1
- set_trips: low=90°C, high=115°C
2. The temperature decreases but stays in the hysteresis region at
93°C
- trend=dropping
- throttle=0, target=0
- passive=1
Before cf3986f8c0
- set_trips: low=90°C, high=95°C
After cf3986f8c0
- set_trips: low=90°C, high=115°C
3. The temperature increases a bit but stays in the hysteresis region
at 94°C (so below the trip point 1 temp 95°C)
- trend=raising
- throttle=0, target=0
- passive=1
Before cf3986f8c0
- set_trips: low=90°C, high=95°C
After cf3986f8c0
- set_trips: low=90°C, high=115°C
4. The temperature decreases but stays in the hysteresis region at
93°C
- trend=dropping
- throttle=0, target=THERMAL_NO_TARGET
- passive=0
Before cf3986f8c0
- set_trips: low=90°C, high=95°C
After cf3986f8c0
- set_trips: low=90°C, high=115°C
At this point, the 'passive' value is zero, there is no mitigation,
the temperature is in the hysteresis region, the next trip point is
115°C. As 'passive' is zero, the timer to monitor the thermal zone is
disabled. Consequently if the temperature continues to increase, no
mitigation will happen and it will reach the 115°C trip point and
reboot.
Before the optimization, the high boundary would have been 95°C, thus
triggering the mitigation again and rearming the polling timer.
The optimization make sense but given the current implementation of
the step_wise governor collaborating via this 'passive' flag with the
core framework it can not work.
From a higher perspective it seems like there is a problem between the
governor which sets a variable to be used by the core framework. That
sounds akward and it would make much more sense if the core framework
controls the governor and not the opposite. But as the devil hides in
the details, there are some subtilities to be addressed before.
Elaborating those would be out of the scope this changelog. So let's
stay simple and revert the change first to fixup all broken mobile
platforms.
This reverts commit cf3986f8c0 ("thermal: core: Don't update trip
points inside the hysteresis range") and takes a conflict with commit
0c0c4740c9 ("0c0c4740c9d2 thermal: trip: Use for_each_trip() in
__thermal_zone_set_trips()") in drivers/thermal/thermal_trip.c into
account.
Fixes: cf3986f8c0 ("thermal: core: Don't update trip points inside the hysteresis range")
Reported-by: Manaf Meethalavalappu Pallikunhi <quic_manafm@quicinc.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Cc: 6.7+ <stable@vger.kernel.org> # 6.7+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
driver (Christophe Jaillet)
- Fix control buffer enablement regression on Meditek MT7896 (Frank
Wunderlich)
- Drop spaces before TABs in different places: thermal-of, ST drivers
and Makefile (Geert Uytterhoeven)
- Adjust DT binding for NXP as fsl,tmu-range min/maxItems can vary
among several SoC versions (Fabio Estevam)
- Add support for H616 THS controller for the Sun8i platforms. Note
that this change relies on another change in the SoC specific code
which is included in this branch (Martin Botka)
- Don't fail probe due to zone registration failure because there is
no trip points defined in the DT (Mark Brown)
- Support variable TMU array size for new platforms (Peng Fan)
- Adjust the DT binding for thermal-of and make the polling time not
required and assume it is zero when not found in the DT (Konrad
Dybcio)
- Add r8a779h0 support in both the DT and the driver (Geert Uytterhoeven)
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Merge tag 'thermal-v6.9-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/thermal/linux
Merge additional thermal control changes for 6.9-rc1 from Daniel Lezcano:
"- Fix memory leak in the error path at probe time in the Mediatek LVTS
driver (Christophe Jaillet)
- Fix control buffer enablement regression on Meditek MT7896 (Frank
Wunderlich)
- Drop spaces before TABs in different places: thermal-of, ST drivers
and Makefile (Geert Uytterhoeven)
- Adjust DT binding for NXP as fsl,tmu-range min/maxItems can vary
among several SoC versions (Fabio Estevam)
- Add support for H616 THS controller for the Sun8i platforms. Note
that this change relies on another change in the SoC specific code
which is included in this branch (Martin Botka)
- Don't fail probe due to zone registration failure because there is
no trip points defined in the DT (Mark Brown)
- Support variable TMU array size for new platforms (Peng Fan)
- Adjust the DT binding for thermal-of and make the polling time not
required and assume it is zero when not found in the DT (Konrad
Dybcio)
- Add r8a779h0 support in both the DT and the driver (Geert Uytterhoeven)"
* tag 'thermal-v6.9-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/thermal/linux:
thermal/drivers/rcar_gen3: Add support for R-Car V4M
dt-bindings: thermal: rcar-gen3-thermal: Add r8a779h0 support
thermal/of: Assume polling-delay(-passive) 0 when absent
dt-bindings: thermal-zones: Don't require polling-delay(-passive)
thermal/drivers/qoriq: Fix getting tmu range
thermal/drivers/sun8i: Don't fail probe due to zone registration failure
thermal/drivers/sun8i: Add support for H616 THS controller
thermal/drivers/sun8i: Add SRAM register access code
thermal/drivers/sun8i: Extend H6 calibration to support 4 sensors
thermal/drivers/sun8i: Explain unknown H6 register value
dt-bindings: thermal: sun8i: Add H616 THS controller
soc: sunxi: sram: export register 0 for THS on H616
dt-bindings: thermal: qoriq-thermal: Adjust fsl,tmu-range min/maxItems
thermal: Drop spaces before TABs
thermal/drivers/mediatek: Fix control buffer enablement on MT7896
thermal/drivers/mediatek/lvts_thermal: Fix a memory leak in an error handling path
- Store zone trips table and zone operations directly in struct
thermal_zone_device (Rafael Wysocki).
- Fix up flex array initialization during thermal zone device
registration (Nathan Chancellor).
- Rework writable trip points handling in the thermal core and
several drivers (Rafael Wysocki).
- Thermal core code cleanups (Dan Carpenter, Flavio Suligoi).
- Use thermal zone accessor functions in the int340x Intel thermal
driver (Rafael Wysocki).
- Add Lunar Lake-M PCI ID to the int340x Intel thermal driver (Srinivas
Pandruvada).
- Minor fixes for thermal governors (Rafael Wysocki, Di Shen).
- Trip point handling fixes for the iwlwifi wireless driver (Rafael
Wysocki).
- Code cleanups (Rafael J. Wysocki, AngeloGioacchino Del Regno).
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Merge tag 'thermal-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull thermal control updates from Rafael Wysocki:
"These mostly change the thermal core in a few ways allowing thermal
drivers to be simplified, in particular in their removal and failing
probe handling parts that are notoriously prone to errors, and
propagate the changes to several drivers.
Apart from that, support for a new platform is added (Intel Lunar
Lake-M), some bugs are fixed and some code is cleaned up, as usual.
Specifics:
- Store zone trips table and zone operations directly in struct
thermal_zone_device (Rafael Wysocki)
- Fix up flex array initialization during thermal zone device
registration (Nathan Chancellor)
- Rework writable trip points handling in the thermal core and
several drivers (Rafael Wysocki)
- Thermal core code cleanups (Dan Carpenter, Flavio Suligoi)
- Use thermal zone accessor functions in the int340x Intel thermal
driver (Rafael Wysocki)
- Add Lunar Lake-M PCI ID to the int340x Intel thermal driver
(Srinivas Pandruvada)
- Minor fixes for thermal governors (Rafael Wysocki, Di Shen)
- Trip point handling fixes for the iwlwifi wireless driver (Rafael
Wysocki)
- Code cleanups (Rafael J. Wysocki, AngeloGioacchino Del Regno)"
* tag 'thermal-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (29 commits)
thermal: core: remove unnecessary check in trip_point_hyst_store()
thermal: intel: int340x_thermal: Use thermal zone accessor functions
thermal: core: Remove excess empty line from a comment
thermal: int340x: processor_thermal: Add Lunar Lake-M PCI ID
thermal: core: Eliminate writable trip points masks
thermal: of: Set THERMAL_TRIP_FLAG_RW_TEMP directly
thermal: imx: Set THERMAL_TRIP_FLAG_RW_TEMP directly
wifi: iwlwifi: mvm: Set THERMAL_TRIP_FLAG_RW_TEMP directly
mlxsw: core_thermal: Set THERMAL_TRIP_FLAG_RW_TEMP directly
thermal: intel: Set THERMAL_TRIP_FLAG_RW_TEMP directly
thermal: core: Drop the .set_trip_hyst() thermal zone operation
thermal: core: Add flags to struct thermal_trip
thermal: core: Move initial num_trips assignment before memcpy()
thermal: Get rid of CONFIG_THERMAL_WRITABLE_TRIPS
thermal: intel: Adjust ops handling during thermal zone registration
thermal: ACPI: Constify acpi_thermal_zone_ops
thermal: core: Store zone ops in struct thermal_zone_device
thermal: intel: Discard trip tables after zone registration
thermal: ACPI: Discard trips table after zone registration
thermal: core: Store zone trips table in struct thermal_zone_device
...
- Allow the Energy Model to be updated dynamically (Lukasz Luba).
- Add support for LZ4 compression algorithm to the hibernation image
creation and loading code (Nikhil V).
- Fix and clean up system suspend statistics collection (Rafael
Wysocki).
- Simplify device suspend and resume handling in the power management
core code (Rafael Wysocki).
- Fix PCI hibernation support description (Yiwei Lin).
- Make hibernation take set_memory_ro() return values into account as
appropriate (Christophe Leroy).
- Set mem_sleep_current during kernel command line setup to avoid an
ordering issue with handling it (Maulik Shah).
- Fix wake IRQs handling when pm_runtime_force_suspend() is used as a
driver's system suspend callback (Qingliang Li).
- Simplify pm_runtime_get_if_active() usage and add a replacement for
pm_runtime_put_autosuspend() (Sakari Ailus).
- Add a tracepoint for runtime_status changes tracking (Vilas Bhat).
- Fix section title markdown in the runtime PM documentation (Yiwei
Lin).
- Enable preferred core support in the amd-pstate cpufreq driver (Meng
Li).
- Fix min_perf assignment in amd_pstate_adjust_perf() and make the
min/max limit perf values in amd-pstate always stay within the
(highest perf, lowest perf) range (Tor Vic, Meng Li).
- Allow intel_pstate to assign model-specific values to strings used in
the EPP sysfs interface and make it do so on Meteor Lake (Srinivas
Pandruvada).
- Drop long-unused cpudata::prev_cummulative_iowait from the
intel_pstate cpufreq driver (Jiri Slaby).
- Prevent scaling_cur_freq from exceeding scaling_max_freq when the
latter is an inefficient frequency (Shivnandan Kumar).
- Change default transition delay in cpufreq to 2ms (Qais Yousef).
- Remove references to 10ms minimum sampling rate from comments in the
cpufreq code (Pierre Gondois).
- Honour transition_latency over transition_delay_us in cpufreq (Qais
Yousef).
- Stop unregistering cpufreq cooling on CPU hot-remove (Viresh Kumar).
- General enhancements / cleanups to ARM cpufreq drivers (tianyu2,
Nícolas F. R. A. Prado, Erick Archer, Arnd Bergmann, Anastasia
Belova).
- Update cpufreq-dt-platdev to block/approve devices (Richard Acayan).
- Make the SCMI cpufreq driver get a transition delay value from
firmware (Pierre Gondois).
- Prevent the haltpoll cpuidle governor from shrinking guest
poll_limit_ns below grow_start (Parshuram Sangle).
- Avoid potential overflow in integer multiplication when computing
cpuidle state parameters (C Cheng).
- Adjust MWAIT hint target C-state computation in the ACPI cpuidle
driver and in intel_idle to return a correct value for C0 (He
Rongguang).
- Address multiple issues in the TPMI RAPL driver and add support for
new platforms (Lunar Lake-M, Arrow Lake) to Intel RAPL (Zhang Rui).
- Fix freq_qos_add_request() return value check in dtpm_cpu (Daniel
Lezcano).
- Fix kernel-doc for dtpm_create_hierarchy() (Yang Li).
- Fix file leak in get_pkg_num() in x86_energy_perf_policy (Samasth
Norway Ananda).
- Fix cpupower-frequency-info.1 man page typo (Jan Kratochvil).
- Fix a couple of warnings in the OPP core code related to W=1
builds (Viresh Kumar).
- Move dev_pm_opp_{init|free}_cpufreq_table() to pm_opp.h (Viresh
Kumar).
- Extend dev_pm_opp_data with turbo support (Sibi Sankar).
- dt-bindings: drop maxItems from inner items (David Heidelberg).
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Merge tag 'pm-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"From the functional perspective, the most significant change here is
the addition of support for Energy Models that can be updated
dynamically at run time.
There is also the addition of LZ4 compression support for hibernation,
the new preferred core support in amd-pstate, new platforms support in
the Intel RAPL driver, new model-specific EPP handling in intel_pstate
and more.
Apart from that, the cpufreq default transition delay is reduced from
10 ms to 2 ms (along with some related adjustments), the system
suspend statistics code undergoes a significant rework and there is a
usual bunch of fixes and code cleanups all over.
Specifics:
- Allow the Energy Model to be updated dynamically (Lukasz Luba)
- Add support for LZ4 compression algorithm to the hibernation image
creation and loading code (Nikhil V)
- Fix and clean up system suspend statistics collection (Rafael
Wysocki)
- Simplify device suspend and resume handling in the power management
core code (Rafael Wysocki)
- Fix PCI hibernation support description (Yiwei Lin)
- Make hibernation take set_memory_ro() return values into account as
appropriate (Christophe Leroy)
- Set mem_sleep_current during kernel command line setup to avoid an
ordering issue with handling it (Maulik Shah)
- Fix wake IRQs handling when pm_runtime_force_suspend() is used as a
driver's system suspend callback (Qingliang Li)
- Simplify pm_runtime_get_if_active() usage and add a replacement for
pm_runtime_put_autosuspend() (Sakari Ailus)
- Add a tracepoint for runtime_status changes tracking (Vilas Bhat)
- Fix section title markdown in the runtime PM documentation (Yiwei
Lin)
- Enable preferred core support in the amd-pstate cpufreq driver
(Meng Li)
- Fix min_perf assignment in amd_pstate_adjust_perf() and make the
min/max limit perf values in amd-pstate always stay within the
(highest perf, lowest perf) range (Tor Vic, Meng Li)
- Allow intel_pstate to assign model-specific values to strings used
in the EPP sysfs interface and make it do so on Meteor Lake
(Srinivas Pandruvada)
- Drop long-unused cpudata::prev_cummulative_iowait from the
intel_pstate cpufreq driver (Jiri Slaby)
- Prevent scaling_cur_freq from exceeding scaling_max_freq when the
latter is an inefficient frequency (Shivnandan Kumar)
- Change default transition delay in cpufreq to 2ms (Qais Yousef)
- Remove references to 10ms minimum sampling rate from comments in
the cpufreq code (Pierre Gondois)
- Honour transition_latency over transition_delay_us in cpufreq (Qais
Yousef)
- Stop unregistering cpufreq cooling on CPU hot-remove (Viresh Kumar)
- General enhancements / cleanups to ARM cpufreq drivers (tianyu2,
Nícolas F. R. A. Prado, Erick Archer, Arnd Bergmann, Anastasia
Belova)
- Update cpufreq-dt-platdev to block/approve devices (Richard Acayan)
- Make the SCMI cpufreq driver get a transition delay value from
firmware (Pierre Gondois)
- Prevent the haltpoll cpuidle governor from shrinking guest
poll_limit_ns below grow_start (Parshuram Sangle)
- Avoid potential overflow in integer multiplication when computing
cpuidle state parameters (C Cheng)
- Adjust MWAIT hint target C-state computation in the ACPI cpuidle
driver and in intel_idle to return a correct value for C0 (He
Rongguang)
- Address multiple issues in the TPMI RAPL driver and add support for
new platforms (Lunar Lake-M, Arrow Lake) to Intel RAPL (Zhang Rui)
- Fix freq_qos_add_request() return value check in dtpm_cpu (Daniel
Lezcano)
- Fix kernel-doc for dtpm_create_hierarchy() (Yang Li)
- Fix file leak in get_pkg_num() in x86_energy_perf_policy (Samasth
Norway Ananda)
- Fix cpupower-frequency-info.1 man page typo (Jan Kratochvil)
- Fix a couple of warnings in the OPP core code related to W=1 builds
(Viresh Kumar)
- Move dev_pm_opp_{init|free}_cpufreq_table() to pm_opp.h (Viresh
Kumar)
- Extend dev_pm_opp_data with turbo support (Sibi Sankar)
- dt-bindings: drop maxItems from inner items (David Heidelberg)"
* tag 'pm-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (95 commits)
dt-bindings: opp: drop maxItems from inner items
OPP: debugfs: Fix warning around icc_get_name()
OPP: debugfs: Fix warning with W=1 builds
cpufreq: Move dev_pm_opp_{init|free}_cpufreq_table() to pm_opp.h
OPP: Extend dev_pm_opp_data with turbo support
Fix cpupower-frequency-info.1 man page typo
cpufreq: scmi: Set transition_delay_us
firmware: arm_scmi: Populate fast channel rate_limit
firmware: arm_scmi: Populate perf commands rate_limit
cpuidle: ACPI/intel: fix MWAIT hint target C-state computation
PM: sleep: wakeirq: fix wake irq warning in system suspend
powercap: dtpm: Fix kernel-doc for dtpm_create_hierarchy() function
cpufreq: Don't unregister cpufreq cooling on CPU hotplug
PM: suspend: Set mem_sleep_current during kernel command line setup
cpufreq: Honour transition_latency over transition_delay_us
cpufreq: Limit resolving a frequency to policy min/max
Documentation: PM: Fix runtime_pm.rst markdown syntax
cpufreq: amd-pstate: adjust min/max limit perf
cpufreq: Remove references to 10ms min sampling rate
cpufreq: intel_pstate: Update default EPPs for Meteor Lake
...
Add support for the Thermal Sensor/Chip Internal Voltage Monitor/Core
Voltage Monitor (THS/CIVM/CVM) on the Renesas R-Car V4M (R8A779H0) SoC.
The conversion formulas for R-Car V4M are the same as for other R-Car
Gen4 SoCs.
Based on a patch in the BSP by Duy Nguyen.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/bd5b002a802c1e058e0048592f17862db1d04263.1709722342.git.geert+renesas@glider.be
Currently, thermal zones associated with providers that have interrupts
for signaling hot/critical trips are required to set a polling-delay
of 0 to indicate no polling. This feels a bit backwards.
Change the code such that "no polling delay" also means "no polling".
Suggested-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20240125-topic-thermal-v1-2-3c9d4dced138@linaro.org
TMU Version 1 has 4 TTRCRs, while TMU Version >=2 has 16 TTRCRs.
So limit the len to 4 will report "invalid range data" for i.MX93.
This patch drop the local array with allocated ttrcr array and
able to support larger tmu ranges.
Fixes: f12d60c81f ("thermal/drivers/qoriq: Support version 2.1")
Tested-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20240226003657.3012880-1-peng.fan@oss.nxp.com
Currently the sun8i thermal driver will fail to probe if any of the
thermal zones it is registering fails to register with the thermal core.
Since we currently do not define any trip points for the GPU thermal
zones on at least A64 or H5 this means that we have no thermal support
on these platforms:
[ 1.698703] thermal_sys: Failed to find 'trips' node
[ 1.698707] thermal_sys: Failed to find trip points for thermal-sensor id=1
even though the main CPU thermal zone on both SoCs is fully configured.
This does not seem ideal, while we may not be able to use all the zones
it seems better to have those zones which are usable be operational.
Instead just carry on registering zones if we get any non-deferral
error, allowing use of those zones which are usable.
This means that we also need to update the interrupt handler to not
attempt to notify the core for events on zones which we have not
registered, I didn't see an ability to mask individual interrupts and
I would expect that interrupts would still be indicated in the ISR even
if they were masked.
Reviewed-by: Vasily Khoruzhick <anarsoul@gmail.com>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20240123-thermal-sun8i-registration-v3-1-3e5771b1bbdd@kernel.org
Add support for the thermal sensor found in H616 SoCs, is the same as
the H6 thermal sensor controller, but with four sensors.
Also the registers readings are wrong, unless a bit in the first SYS_CFG
register cleared, so set exercise the SRAM regmap to take care of that.
Signed-off-by: Martin Botka <martin.botka@somainline.org>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20240219153639.179814-7-andre.przywara@arm.com
The Allwinner H616 SoC needs to clear a bit in one register in the SRAM
controller, to report reasonable temperature values. On reset, bit 16 in
register 0x3000000 is set, which leads to the driver reporting
temperatures around 200C. Clearing this bit brings the values down to the
expected range. The BSP code does a one-time write in U-Boot, with a
comment just mentioning the effect on the THS, but offering no further
explanation.
To not rely on firmware to set things up for us, add code that queries
the SRAM controller device via a DT phandle link, then clear just this
single bit.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20240219153639.179814-6-andre.przywara@arm.com
The H616 SoC resembles the H6 thermal sensor controller, with a few
changes like four sensors.
Extend sun50i_h6_ths_calibrate() function to support calibration of
these sensors.
Co-developed-by: Martin Botka <martin.botka@somainline.org>
Signed-off-by: Martin Botka <martin.botka@somainline.org>
Signed-off-by: Maksim Kiselev <bigunclemax@gmail.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Acked-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20240219153639.179814-5-andre.przywara@arm.com
So far we were ORing in some "unknown" value into the THS control
register on the Allwinner H6. This part of the register is not explained
in the H6 manual, but the H616 manual details those bits, and on closer
inspection the THS IP blocks in both SoCs seem very close:
- The BSP code for both SoCs writes the same values into THS_CTRL.
- The reset values of at least the first three registers are the same.
Replace the "unknown" value with its proper meaning: "acquire time",
most probably the sample part of the sample & hold circuit of the ADC,
according to its explanation in the H616 manual.
No functional change, just a macro rename and adjustment.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Acked-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20240219153639.179814-4-andre.przywara@arm.com
Reading thermal sensor on mt7986 devices returns invalid temperature:
bpi-r3 ~ # cat /sys/class/thermal/thermal_zone0/temp
-274000
Fix this by adding missing members in mtk_thermal_data struct which were
used in mtk_thermal_turn_on_buffer after commit 33140e668b.
Cc: stable@vger.kernel.org
Fixes: 33140e668b ("thermal/drivers/mediatek: Control buffer enablement tweaks")
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Reviewed-by: Markus Schneider-Pargmann <msp@baylibre.com>
Reviewed-by: Daniel Golle <daniel@makrotopia.org>
Tested-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20230907112018.52811-1-linux@fw-web.de
