Commit graph

1,233,488 commits

Author SHA1 Message Date
Maso Huang
9f8df795ae
ASoC: mediatek: mt7986: support etdm in platform driver
Add mt7986 etdm dai driver support.

Signed-off-by: Maso Huang <maso.huang@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230817101338.18782-3-maso.huang@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-08-17 13:09:16 +01:00
Maso Huang
c4c3c32d08
ASoC: mediatek: mt7986: add common header
Add header files for register definition and structure.

Signed-off-by: Maso Huang <maso.huang@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230817101338.18782-2-maso.huang@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-08-17 13:09:16 +01:00
Shenghao Ding
3d521f9f36
ASoC: tas2781: fixed register access error when switching to other chips
fixed register access error when switching to other tas2781 -- refresh the page
inside regmap on the switched tas2781

Signed-off-by: Shenghao Ding <shenghao-ding@ti.com>
Link: https://lore.kernel.org/r/20230817093257.951-1-shenghao-ding@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-08-17 13:09:12 +01:00
Simon Trimmer
e8500a7027
ASoC: cs35l56: Add an ACPI match table
An ACPI ID has been allocated for CS35L56 ASoC devices so that they can
be instantiated from ACPI Device entries.

Signed-off-by: Simon Trimmer <simont@opensource.cirrus.com>
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230817112712.16637-3-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-08-17 13:05:31 +01:00
Maciej Strozek
897a6b5a03
ASoC: cs35l56: Read firmware uuid from a device property instead of _SUB
Use a device property "cirrus,firmware-uid" to get the unique firmware
identifier instead of using ACPI _SUB. There aren't any products that use
_SUB.

There will not usually be a _SUB in Soundwire nodes. The ACPI can use a
_DSD section for custom properties.

There is also a need to support instantiating this driver using software
nodes. This is for systems where the CS35L56 is a back-end device and the
ACPI refers only to the front-end audio device - there will not be any ACPI
references to CS35L56.

Fixes: e496112529 ("ASoC: cs35l56: Add driver for Cirrus Logic CS35L56")
Signed-off-by: Maciej Strozek <mstrozek@opensource.cirrus.com>
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230817112712.16637-2-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-08-17 13:05:30 +01:00
Alexander Stein
4aa8f7e24f dt-bindings: leds: Add gpio-line-names to PCA9532 GPIO
This is a gpio-controller, so gpio-line-names should be allowed as well.

pca9532 supports up to 16 GPIOs.

Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230724063520.182888-2-alexander.stein@ew.tq-group.com
Signed-off-by: Lee Jones <lee@kernel.org>
2023-08-17 12:49:19 +01:00
Jani Nikula
50b6f2c829 Revert "drm/edid: Fix csync detailed mode parsing"
This reverts commit ca62297b20.

Commit ca62297b20 ("drm/edid: Fix csync detailed mode parsing") fixed
EDID detailed mode sync parsing. Unfortunately, there are quite a few
displays out there that have bogus (zero) sync field that are broken by
the change. Zero means analog composite sync, which is not right for
digital displays, and the modes get rejected. Regardless, it used to
work, and it needs to continue to work. Revert the change.

Rejecting modes with analog composite sync was the part that fixed the
gitlab issue 8146 [1]. We'll need to get back to the drawing board with
that.

[1] https://gitlab.freedesktop.org/drm/intel/-/issues/8146

Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/8789
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/8930
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/9044
Fixes: ca62297b20 ("drm/edid: Fix csync detailed mode parsing")
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: dri-devel@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v6.4+
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230815101907.2900768-1-jani.nikula@intel.com
2023-08-17 14:39:12 +03:00
Peter Zijlstra
5409730962 x86/static_call: Fix __static_call_fixup()
Christian reported spurious module load crashes after some of Song's
module memory layout patches.

Turns out that if the very last instruction on the very last page of the
module is a 'JMP __x86_return_thunk' then __static_call_fixup() will
trip a fault and die.

And while the module rework made this slightly more likely to happen,
it's always been possible.

Fixes: ee88d363d1 ("x86,static_call: Use alternative RET encoding")
Reported-by: Christian Bricart <christian@bricart.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Link: https://lkml.kernel.org/r/20230816104419.GA982867@hirez.programming.kicks-ass.net
2023-08-17 13:24:09 +02:00
Charles Keepax
d5282a5392 pinctrl: cs42l43: Add support for the cs42l43
The CS42L43 is an audio CODEC with integrated MIPI SoundWire interface
(Version 1.2.1 compliant), I2C, SPI, and I2S/TDM interfaces designed
for portable applications. It provides a high dynamic range, stereo
DAC for headphone output, two integrated Class D amplifiers for
loudspeakers, and two ADCs for wired headset microphone input or
stereo line input. PDM inputs are provided for digital microphones.

Add a basic pinctrl driver which supports driver strength for the
various pins, gpios, and pinmux for the 2 multi-function pins.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230804104602.395892-5-ckeepax@opensource.cirrus.com
Signed-off-by: Lee Jones <lee@kernel.org>
2023-08-17 12:06:11 +01:00
Charles Keepax
ace6d14481 mfd: cs42l43: Add support for cs42l43 core driver
The CS42L43 is an audio CODEC with integrated MIPI SoundWire interface
(Version 1.2.1 compliant), I2C, SPI, and I2S/TDM interfaces designed
for portable applications. It provides a high dynamic range, stereo
DAC for headphone output, two integrated Class D amplifiers for
loudspeakers, and two ADCs for wired headset microphone input or
stereo line input. PDM inputs are provided for digital microphones.

The MFD component registers and initialises the device and provides
PM/system power management.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230804104602.395892-4-ckeepax@opensource.cirrus.com
Signed-off-by: Lee Jones <lee@kernel.org>
2023-08-17 12:06:11 +01:00
Charles Keepax
ec77cad8d5 dt-bindings: mfd: cirrus,cs42l43: Add initial DT binding
The CS42L43 is an audio CODEC with integrated MIPI SoundWire interface
(Version 1.2.1 compliant), I2C, SPI, and I2S/TDM interfaces designed
for portable applications. It provides a high dynamic range, stereo
DAC for headphone output, two integrated Class D amplifiers for
loudspeakers, and two ADCs for wired headset microphone input or
stereo line input. PDM inputs are provided for digital microphones.

Add a YAML DT binding document for this device.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230804104602.395892-3-ckeepax@opensource.cirrus.com
Signed-off-by: Lee Jones <lee@kernel.org>
2023-08-17 12:06:11 +01:00
Lucas Tanure
12a95123bf soundwire: bus: Allow SoundWire peripherals to register IRQ handlers
Currently the in-band alerts for SoundWire peripherals can only
be communicated to the driver through the interrupt_callback
function. This however is slightly inconvenient for devices that wish
to share IRQ handling code between SoundWire and I2C/SPI, the later
would normally register an IRQ handler with the IRQ subsystem. However
there is no reason the SoundWire in-band IRQs can not also be
communicated as an actual IRQ to the driver.

Add support for SoundWire peripherals to register a normal IRQ
handler to receive SoundWire in-band alerts, allowing code to be
shared across control buses. Note that we allow users to use both the
interrupt_callback and the IRQ handler, this is useful for devices
which must clear additional chip specific SoundWire registers that are
not a part of the normal IRQ flow, or the SoundWire specification.

Signed-off-by: Lucas Tanure <tanureal@opensource.cirrus.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Acked-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230804104602.395892-2-ckeepax@opensource.cirrus.com
Signed-off-by: Lee Jones <lee@kernel.org>
2023-08-17 12:06:11 +01:00
Joerg Roedel
90654da4d9 Qualc^WArm SMMU updates for 6.6
- Device-tree binding updates:
   * Add additional compatible strings for Qualcomm SoCs
   * Allow ASIDs to be configured in the DT to work around Qualcomm's
     broken hypervisor
   * Fix clocks for Qualcomm's MSM8998 SoC
 
 - SMMUv2:
   * Support for Qualcomm's legacy firmware implementation featured on
     at least MSM8956 and MSM8976.
   * Match compatible strings for Qualcomm SM6350 and SM6375 SoC variants
 
 - SMMUv3:
   * Use 'ida' instead of a bitmap for VMID allocation
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Merge tag 'arm-smmu-updates' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into arm/smmu

Qualc^WArm SMMU updates for 6.6

- Device-tree binding updates:
  * Add additional compatible strings for Qualcomm SoCs
  * Allow ASIDs to be configured in the DT to work around Qualcomm's
    broken hypervisor
  * Fix clocks for Qualcomm's MSM8998 SoC

- SMMUv2:
  * Support for Qualcomm's legacy firmware implementation featured on
    at least MSM8956 and MSM8976.
  * Match compatible strings for Qualcomm SM6350 and SM6375 SoC variants

- SMMUv3:
  * Use 'ida' instead of a bitmap for VMID allocation
2023-08-17 13:01:32 +02:00
Marek Behún
730094577e leds: trigger: tty: Do not use LED_ON/OFF constants, use led_blink_set_oneshot instead
The tty LED trigger uses the obsolete LED_ON & LED_OFF constants when
setting LED brightness. This is bad because the LED_ON constant is equal
to 1, and so when activating the tty LED trigger on a LED class device
with max_brightness greater than 1, the LED is dimmer than it can be
(when max_brightness is 255, the LED is very dimm indeed; some devices
translate 1/255 to 0, so the LED is OFF all the time).

Instead of directly setting brightness to a specific value, use the
led_blink_set_oneshot() function from LED core to configure the blink.
This function takes the current configured brightness as blink
brightness if not zero, and max brightness otherwise.

This also changes the behavior of the TTY LED trigger. Previously if
rx/tx stats kept changing, the LED was ON all the time they kept
changing. With this patch the LED will blink on TTY activity.

Fixes: fd4a641ac8 ("leds: trigger: implement a tty trigger")
Signed-off-by: Marek Behún <kabel@kernel.org>
Link: https://lore.kernel.org/r/20230802090753.13611-1-kabel@kernel.org
Signed-off-by: Lee Jones <lee@kernel.org>
2023-08-17 11:58:32 +01:00
Yue Haibing
0652cf98e0 iommu/amd: Remove unused declarations
Commit aafd8ba0ca ("iommu/amd: Implement add_device and remove_device")
removed the implementations but left declarations in place. Remove it.

Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20230814135502.4808-1-yuehaibing@huawei.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2023-08-17 12:58:24 +02:00
Anshuman Khandual
a4621fd1d4 coresight: etm4x: Ensure valid drvdata and clock before clk_put()
This validates 'drvdata' and 'drvdata->pclk' clock before calling clk_put()
in etm4_remove_platform_dev(). The problem was detected using Smatch static
checker as reported.

Fixes: 73d779a03a ("coresight: etm4x: Change etm4_platform_driver driver for MMIO devices")
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: James Clark <james.clark@arm.com>
Cc: coresight@lists.linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lists.linaro.org/archives/list/coresight@lists.linaro.org/thread/G4N6P4OXELPLLQSNU3GU2MR4LOLRXRMJ/
Reviewed-by: James Clark <james.clark@arm.com>
Reviewed-by: Mike Leach <mike.leach@lnaro.org>
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20230817035926.157370-1-anshuman.khandual@arm.com
2023-08-17 11:49:21 +01:00
Suzuki K Poulose
39744738a6 coresight: trbe: Allocate platform data per device
Coresight TRBE driver shares a single platform data (which is empty btw).
However, with the commit 4e8fe7e5c3
("coresight: Store pointers to connections rather than an array of them")
the coresight core would free up the pdata, resulting in multiple attempts
to free the same pdata for TRBE instances. Fix this by allocating a pdata per
coresight_device.

Fixes: 4e8fe7e5c3 ("coresight: Store pointers to connections rather than an array of them")
Link: https://lore.kernel.org/r/20230814093813.19152-3-hejunhao3@huawei.com
Reported-by: Junhao He <hejunhao3@huawei.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: James Clark <james.clark@arm.com>
Tested-by: Junhao He <hejunhao3@huawei.com>
Link: https://lore.kernel.org/r/20230816141008.535450-2-suzuki.poulose@arm.com
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
2023-08-17 11:43:02 +01:00
Krzysztof Kozlowski
f044ae6b5a dt-bindings: leds: rohm,bd71828: Drop select:false
select:false makes the schema basically ignored (not selected for given
compatible), unless some other binding references it.  It's not really
useful nor needed for device bindings, even if they are part of other
binding (like MFD).

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Matti Vaittinen <mazziesaccount@gmail.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230728171123.110489-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Lee Jones <lee@kernel.org>
2023-08-17 11:29:07 +01:00
Marek Behún
c3f853184b leds: Fix BUG_ON check for LED_COLOR_ID_MULTI that is always false
At the time we call
    BUG_ON(props.color == LED_COLOR_ID_MULTI);
the props variable is still initialized to zero.

Call the BUG_ON only after we parse fwnode into props.

Fixes: 77dce3a22e ("leds: disallow /sys/class/leds/*:multi:* for now")
Signed-off-by: Marek Behún <kabel@kernel.org>
Link: https://lore.kernel.org/r/20230801151623.30387-1-kabel@kernel.org
Signed-off-by: Lee Jones <lee@kernel.org>
2023-08-17 11:26:36 +01:00
Marek Behún
065d099f1b leds: multicolor: Use rounded division when calculating color components
Given channel intensity, LED brightness and max LED brightness, the
multicolor LED framework helper led_mc_calc_color_components() computes
the color channel brightness as

    chan_brightness = brightness * chan_intensity / max_brightness

Consider the situation when (brightness, intensity, max_brightness) is
for example (16, 15, 255), then chan_brightness is computed to 0
although the fractional divison would give 0.94, which should be rounded
to 1.

Use DIV_ROUND_CLOSEST here for the division to give more realistic
component computation:

    chan_brightness = DIV_ROUND_CLOSEST(brightness * chan_intensity,
                                        max_brightness)

Fixes: 55d5d3b46b ("leds: multicolor: Introduce a multicolor class definition")
Signed-off-by: Marek Behún <kabel@kernel.org>
Link: https://lore.kernel.org/r/20230801124931.8661-1-kabel@kernel.org
Signed-off-by: Lee Jones <lee@kernel.org>
2023-08-17 11:25:03 +01:00
Peng Fan
4f6c983261 genpd: imx: scu-pd: initialize is_off according to HW state
The current code default set is_off to true except console resource,
this implies bootloader should power off all the resources it uses.

But this is not always true, let's check the HW state and set is_off.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2023-08-17 11:33:54 +02:00
Peng Fan
ec8b561975 genpd: imx: scu-pd: Suppress bind attrs
This driver is registered as platform driver, but removing and binding
again would cause system not workable. So suppress bind attrs.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2023-08-17 11:33:54 +02:00
Peng Fan
309864dcf9 genpd: imx: scu-pd: do not power off console if no_console_suspend
Do not power off console if no_console_suspend, this will leave
the serial device's corresponding PM domain on during system suspend,
which is useful for debug system suspend.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2023-08-17 11:33:54 +02:00
Peng Fan
a67d780720 genpd: imx: scu-pd: add more PDs
Add more PDs for i.MX8QM and i.MX8DXL, including
dma-ch, esai, gpu1, v2x-mu, seco-mu, hdmi, img and etc.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2023-08-17 11:33:54 +02:00
Peng Fan
927b7d15dc genpd: imx: scu-pd: enlarge PD range
There are 5 LPI2C, 5 LPUART and 32 DMA0 Channel resources per imx_rsrc.h,
and they are in i.MX8QM, so enlarge the PD range for them.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2023-08-17 11:33:54 +02:00
Peng Fan
b683a36207 genpd: imx: relocate scu-pd under genpd
Move scu-pd driver under genpd directory where the driver
should be.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2023-08-17 11:33:54 +02:00
Rafael J. Wysocki
5484e31bbb cpuidle: menu: Skip tick_nohz_get_sleep_length() call in some cases
Because the cost of calling tick_nohz_get_sleep_length() may increase
in the future, reorder the code in menu_select() so it first uses the
statistics to determine the expected idle duration.  If that value is
higher than RESIDENCY_THRESHOLD_NS, tick_nohz_get_sleep_length() will
be called to obtain the time till the closest timer and refine the
idle duration prediction if necessary.

This causes the governor to always take the full overhead of
get_typical_interval() with the assumption that the cost will be
amortized by skipping the tick_nohz_get_sleep_length() call in the
cases when the predicted idle duration is relatively very small.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Doug Smythies <dsmythies@telus.net>
2023-08-17 11:28:38 +02:00
Rafael J. Wysocki
4ab4b3b11d ACPI: thermal: Eliminate code duplication from acpi_thermal_notify()
Move the acpi_bus_generate_netlink_event() invocation into
acpi_thermal_trips_update() which allows the code duplication in
acpi_thermal_notify() to be cleaned up, but for this purpose the
event value needs to be passed to acpi_thermal_trips_update() and
from there to acpi_thermal_adjust_thermal_zone() which has to
determine the flag value for __acpi_thermal_trips_update() by
itself.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2023-08-17 11:25:29 +02:00
Rafael J. Wysocki
2a74c4aca1 ACPI: thermal: Drop unnecessary thermal zone callbacks
Drop the .get_trip_type(), .get_trip_temp() and .get_crit_temp() thermal
zone callbacks that are not necessary any more from the ACPI thermal
driver along with the corresponding callback functions.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2023-08-17 11:25:22 +02:00
Rafael J. Wysocki
9caaad2ca0 ACPI: thermal: Rework thermal_get_trend()
Rework the ACPI thermal driver's .get_trend() callback function,
thermal_get_trend(), so that it does not call thermal_get_trip_type()
and thermal_get_trip_temp() which are going to be dropped.

This reduces the overhead of the function too, because it will always
carry out a trip point lookup once after the change.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2023-08-17 11:25:22 +02:00
Rafael J. Wysocki
ec23c1c462 ACPI: thermal: Use trip point table to register thermal zones
Make the ACPI thermal driver use thermal_zone_device_register_with_trips()
to register its thermal zones.

For this purpose, make it create a trip point table that will be passed to
thermal_zone_device_register_with_trips() as an argument.

Also use the thermal_zone_update_trip_temp() helper introduced
previously to update temperatures of the passive and active trip
points after a trip points change notification from the platform
firmware.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2023-08-17 11:25:22 +02:00
Rafael J. Wysocki
96b8b4365d thermal: core: Rework and rename __for_each_thermal_trip()
Rework the currently unused __for_each_thermal_trip() to pass original
pointers to struct thermal_trip objects to the callback, so it can be
used for updating trip data (e.g. temperatures), rename it to
for_each_thermal_trip() and make it available to modular drivers.

Suggested-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2023-08-17 11:25:22 +02:00
Rafael J. Wysocki
68b77785a1 ACPI: thermal: Introduce struct acpi_thermal_trip
Add struct acpi_thermal_trip to contain the temperature and valid flag
of each trip point in the driver's local data structures.

This helps to make the subsequent changes more straightforward.

No intentional functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2023-08-17 11:25:22 +02:00
Rafael J. Wysocki
68f4f0378c ACPI: thermal: Carry out trip point updates under zone lock
There is a race condition between acpi_thermal_trips_update() and
acpi_thermal_check_fn(), because the trip points may get updated while
the latter is running which in theory may lead to inconsistent results.
For example, if two trips are updated together, using the temperature
value of one of them from before the update and the temperature value
of the other one from after the update may not lead to the expected
outcome.

Moreover, if thermal_get_trend() runs when a trip points update is in
progress, it may end up using stale trip point temperatures.

To address this, make acpi_thermal_trips_update() call
thermal_zone_device_exec() to carry out the trip points update and
use a new  acpi_thermal_adjust_thermal_zone() wrapper around
__acpi_thermal_trips_update() as the callback function for the latter.

While at it, change the acpi_thermal_trips_update() return data type
to void as that function always returns 0 anyway.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2023-08-17 11:24:27 +02:00
Rafael J. Wysocki
bf07b4a3ba ACPI: thermal: Clean up acpi_thermal_register_thermal_zone()
Rename the trips variable in acpi_thermal_register_thermal_zone() to
trip_count so its name better reflects the purpose, rearrange white
space in the loop over active trips for clarity and reduce code
duplication related to calling thermal_zone_device_register() by
using an extra local variable to store the passive delay value.

No intentional functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2023-08-17 11:24:18 +02:00
Rafael J. Wysocki
cba440fab3 thermal: core: Add priv pointer to struct thermal_trip
Add a new field called priv to struct thermal_trip to allow thermal
drivers to store pointers to their local data associated with trip
points.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2023-08-17 11:24:18 +02:00
Randy Dunlap
60046980bf KVM: arm64: nv: Select XARRAY_MULTI to fix build error
populate_nv_trap_config() uses xa_store_range(), which is only built
when XARRAY_MULTI is set, so select that symbol to prevent the build error.

aarch64-linux-ld: arch/arm64/kvm/emulate-nested.o: in function `populate_nv_trap_config':
emulate-nested.c:(.init.text+0x17c): undefined reference to `xa_store_range'

Fixes: e58ec47bf6 ("KVM: arm64: nv: Add trap forwarding infrastructure")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Oliver Upton <oliver.upton@linux.dev>
Cc: kvmarm@lists.linux.dev
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230816210949.17117-1-rdunlap@infradead.org
2023-08-17 10:24:00 +01:00
Rafael J. Wysocki
9a99a996d1 thermal: core: Introduce thermal_zone_device_exec()
Introduce a new helper function, thermal_zone_device_exec(), that can
be used by drivers to run a given callback routine under the zone lock.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2023-08-17 11:23:32 +02:00
Marc Zyngier
03fb54d0aa KVM: arm64: nv: Add support for HCRX_EL2
HCRX_EL2 has an interesting effect on HFGITR_EL2, as it conditions
the traps of TLBI*nXS.

Expand the FGT support to add a new Fine Grained Filter that will
get checked when the instruction gets trapped, allowing the shadow
register to override the trap as needed.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Jing Zhang <jingzhangos@google.com>
Link: https://lore.kernel.org/r/20230815183903.2735724-29-maz@kernel.org
2023-08-17 10:00:28 +01:00
Marc Zyngier
a63cf31139 KVM: arm64: Move HCRX_EL2 switch to load/put on VHE systems
Although the nVHE behaviour requires HCRX_EL2 to be switched
on each switch between host and guest, there is nothing in
this register that would affect a VHE host.

It is thus possible to save/restore this register on load/put
on VHE systems, avoiding unnecessary sysreg access on the hot
path. Additionally, it avoids unnecessary traps when running
with NV.

To achieve this, simply move the read/writes to the *_common()
helpers, which are called on load/put on VHE, and more eagerly
on nVHE.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Jing Zhang <jingzhangos@google.com>
Link: https://lore.kernel.org/r/20230815183903.2735724-28-maz@kernel.org
2023-08-17 10:00:28 +01:00
Marc Zyngier
0a5d28433a KVM: arm64: nv: Expose FGT to nested guests
Now that we have FGT support, expose the feature to NV guests.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Jing Zhang <jingzhangos@google.com>
Link: https://lore.kernel.org/r/20230815183903.2735724-27-maz@kernel.org
2023-08-17 10:00:28 +01:00
Marc Zyngier
d4d2dacc7c KVM: arm64: nv: Add switching support for HFGxTR/HDFGxTR
Now that we can evaluate the FGT registers, allow them to be merged
with the hypervisor's own configuration (in the case of HFG{RW}TR_EL2)
or simply set for HFGITR_EL2, HDGFRTR_EL2 and HDFGWTR_EL2.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Jing Zhang <jingzhangos@google.com>
Link: https://lore.kernel.org/r/20230815183903.2735724-26-maz@kernel.org
2023-08-17 10:00:28 +01:00
Marc Zyngier
ea3b27d8de KVM: arm64: nv: Expand ERET trap forwarding to handle FGT
We already handle ERET being trapped from a L1 guest in hyp context.
However, with FGT, we can also have ERET being trapped from L2, and
this needs to be reinjected into L1.

Add the required exception routing.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Jing Zhang <jingzhangos@google.com>
Link: https://lore.kernel.org/r/20230815183903.2735724-25-maz@kernel.org
2023-08-17 10:00:27 +01:00
Marc Zyngier
a77b31dce4 KVM: arm64: nv: Add SVC trap forwarding
HFGITR_EL2 allows the trap of SVC instructions to EL2. Allow these
traps to be forwarded. Take this opportunity to deny any 32bit activity
when NV is enabled.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Jing Zhang <jingzhangos@google.com>
Link: https://lore.kernel.org/r/20230815183903.2735724-24-maz@kernel.org
2023-08-17 10:00:27 +01:00
Marc Zyngier
d0be0b2ede KVM: arm64: nv: Add trap forwarding for HDFGxTR_EL2
... and finally, the Debug version of FGT, with its *enormous*
list of trapped registers.

Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Jing Zhang <jingzhangos@google.com>
Link: https://lore.kernel.org/r/20230815183903.2735724-23-maz@kernel.org
2023-08-17 10:00:27 +01:00
Marc Zyngier
039f9f12de KVM: arm64: nv: Add trap forwarding for HFGITR_EL2
Similarly, implement the trap forwarding for instructions affected
by HFGITR_EL2.

Note that the TLBI*nXS instructions should be affected by HCRX_EL2,
which will be dealt with down the line. Also, ERET* and SVC traps
are handled separately.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Jing Zhang <jingzhangos@google.com>
Link: https://lore.kernel.org/r/20230815183903.2735724-22-maz@kernel.org
2023-08-17 10:00:27 +01:00
Marc Zyngier
5a24ea7869 KVM: arm64: nv: Add trap forwarding for HFGxTR_EL2
Implement the trap forwarding for traps described by HFGxTR_EL2,
reusing the Fine Grained Traps infrastructure previously implemented.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Jing Zhang <jingzhangos@google.com>
Link: https://lore.kernel.org/r/20230815183903.2735724-21-maz@kernel.org
2023-08-17 10:00:27 +01:00
Marc Zyngier
15b4d82d69 KVM: arm64: nv: Add fine grained trap forwarding infrastructure
Fine Grained Traps are fun. Not.

Implement the fine grained trap forwarding, reusing the Coarse Grained
Traps infrastructure previously implemented.

Each sysreg/instruction inserted in the xarray gets a FGT group
(vaguely equivalent to a register number), a bit number in that register,
and a polarity.

It is then pretty easy to check the FGT state at handling time, just
like we do for the coarse version (it is just faster).

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Jing Zhang <jingzhangos@google.com>
Link: https://lore.kernel.org/r/20230815183903.2735724-20-maz@kernel.org
2023-08-17 10:00:27 +01:00
Marc Zyngier
e880bd3363 KVM: arm64: nv: Add trap forwarding for CNTHCTL_EL2
Describe the CNTHCTL_EL2 register, and associate it with all the sysregs
it allows to trap.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Jing Zhang <jingzhangos@google.com>
Link: https://lore.kernel.org/r/20230815183903.2735724-19-maz@kernel.org
2023-08-17 10:00:27 +01:00
Marc Zyngier
cb31632c44 KVM: arm64: nv: Add trap forwarding for MDCR_EL2
Describe the MDCR_EL2 register, and associate it with all the sysregs
it allows to trap.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Jing Zhang <jingzhangos@google.com>
Link: https://lore.kernel.org/r/20230815183903.2735724-18-maz@kernel.org
2023-08-17 10:00:27 +01:00