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git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver updates from Ilpo Järvinen:
- amd/hfi: Add support for dynamic ranking tables (version 3)
- amd/pmc:
- Add PMC driver support for AMD 1Ah M80H SoC
- Delay suspend for some Lenovo Laptops to avoid keyboard and lid
switch problems after s2idle
- arm64: qcom-hamoa-ec: Add Hamoa/Purwa/Glymur EC driver
- asus-armoury: add support for G614PR, GA402NJ, GA403UM, and FX608JPR
- asus-wmi: add keystone dongle support
- dell-dw5826e: Add reset driver for DW5826e
- dell-laptop: Fix rollback path
- hp-wmi:
- Add support for Omen 16-ap0xxx (board ID 8D26) and board ID 8B2F
- intel-hid:
- Add HP ProBook x360 440 G1 5 button array support
- Prevent racing ACPI notify handlers
- intel/pmc:
- Add Nova Lake support
- Rate-limit LTR scale-factor warning
- intel-uncore-freq:
- Expose instance ID in the sysfs
- Fix current_freq_khz after CPU hotplug
- intel/vsec: Restore BAR fallback for header walk
- ISST: Restore SST-PP control to all domains
- lenovo-wmi-*:
- Add more CPU tunable attributes
- Add GPU tunable attributes
- Add WMI battery charge limiting
- oxpec: add support for OneXPlayer Super X
- sel3350-platform: Retain LED state on load and unload
- surface: SAM: Add support for Surface Pro 12in
- uniwill-laptop: Add support for battery charge modes
- tools/power/x86/intel-speed-select: Harden daemon pidfile open
- Major refactoring efforts:
- ACPI driver to platform driver conversion
- Converting drivers to use the improved WMI API
- Miscellaneous cleanups / refactoring / improvements
* tag 'platform-drivers-x86-v7.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (115 commits)
platform/x86/intel/pmc: Add NVL PCI IDs for SSRAM telemetry discovery
platform/x86/intel/pmc/ssram: Make PMT registration optional
platform/x86/intel/pmc/ssram: Add ACPI discovery scaffolding
platform/x86/intel/pmc/ssram: Switch to static array with per-index probe state
platform/x86/intel/pmc/ssram: Refactor DEVID/PWRMBASE extraction into helper
platform/x86/intel/pmc/ssram: Add PCI platform data
platform/x86/intel/pmc/ssram: Rename probe and PCI ID table for consistency
platform/x86/intel/pmc: Add ACPI PWRM telemetry driver for Nova Lake S
platform/x86/intel/pmc: Add PMC SSRAM Kconfig description
platform/x86/intel/pmt: Unify header fetch and add ACPI source
platform/x86/intel/pmt: Cache the telemetry discovery header
platform/x86/intel/pmt: Pass discovery index instead of resource
platform/x86/intel/pmt/telemetry: Move overlap check to post-decode hook
platform/x86/intel/pmt/crashlog: Split init into pre-decode
platform/x86/intel/pmt: Add pre/post decode hooks around header parsing
modpost: Handle malformed WMI GUID strings
platform/wmi: Make sysfs attributes const
platform/wmi: Make wmi_bus_class const
hwmon: (dell-smm) Use new buffer-based WMI API
platform/x86: dell-ddv: Use new buffer-based WMI API
...
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With tab=8 (Linux Kernel coding style), there are a couple of lines
misaligned in the comment ASCII tables. Fix indentation for them.
Signed-off-by: Shawn Guo <shengchao.guo@oss.qualcomm.com>
Link: https://patch.msgid.link/20260608082348.92575-1-shengchao.guo@oss.qualcomm.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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While being less compact, using named initializers allows to more easily
see which members of the structs are assigned which value without having
to lookup the declaration of the struct. And it's also more robust
against changes to the struct definition.
This patch doesn't modify the compiled arrays, only their representation
in source form benefits. The former was confirmed with x86 and arm64
builds.
While touching all these arrays, unify usage of whitespace in the list
terminator.
Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Link: https://patch.msgid.link/20260519144341.1589034-2-u.kleine-koenig@baylibre.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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Add Embedded controller driver support for Hamoa/Purwa/Glymur qualcomm
reference boards. It handles fan control, temperature sensors, access
to EC state changes and supports reporting suspend entry/exit to the
EC.
Co-developed-by: Maya Matuszczyk <maccraft123mc@gmail.com>
Signed-off-by: Maya Matuszczyk <maccraft123mc@gmail.com>
Signed-off-by: Sibi Sankar <sibi.sankar@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Acked-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Tested-by: Akhil P Oommen <akhilpo@oss.qualcomm.com>
Co-developed-by: Anvesh Jain P <anvesh.p@oss.qualcomm.com>
Signed-off-by: Anvesh Jain P <anvesh.p@oss.qualcomm.com>
Link: https://patch.msgid.link/20260511-add-driver-for-ec-v9-2-e5437c39b7f8@oss.qualcomm.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This is the result of running the Coccinelle script from
scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to
avoid scalar types (which need careful case-by-case checking), and
instead replace kmalloc-family calls that allocate struct or union
object instances:
Single allocations: kmalloc(sizeof(TYPE), ...)
are replaced with: kmalloc_obj(TYPE, ...)
Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...)
are replaced with: kmalloc_objs(TYPE, COUNT, ...)
Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...)
are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...)
(where TYPE may also be *VAR)
The resulting allocations no longer return "void *", instead returning
"TYPE *".
Signed-off-by: Kees Cook <kees@kernel.org>
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The current set of DMI board IDs from the fixes branch is required to
reorder them in the for-next branch.
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This ensures that the keyboard backlight state is restored after
a suspend-resume cycle. Otherwise the keyboard is automatically
disabled during suspend and then stays disabled after resume.
Note, that this adopts the same behavior as the existing Thinkpad
ACPI driver.
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Link: https://patch.msgid.link/20251119-thinkpad-t14s-ec-improvements-v2-4-441219857c02@kernel.org
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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Improve support for system suspend. The register information has been
extracted from the ACPI DSDT code handling Windows Modern Standby. I
took over the weird multi-write function from the ACPI DSDT code where
it is called ECWS.
In addition to writing to the 0xE0 register, the ACPI Windows Modern
Standby code also does some changes to the thermal configuration. This
part is not implemented.
After this patch the laptop's power and LID LEDs will switch into the
typical breathing animation when the system is suspended and enabled
normally again after resuming.
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Link: https://patch.msgid.link/20251119-thinkpad-t14s-ec-improvements-v2-3-441219857c02@kernel.org
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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The ACPI ECRD and ECWR functions have a 10ms sleep at the end. It turns
out, that this is sometimes needed to avoid I2C transmission failures,
especially for functions doing regmap_update_bits (and thus read + write
shortly after each other). This fixes problems like the following
appearing in the kernel log:
leds platform::micmute: Setting an LED's brightness failed (-6)
leds platform::kbd_backlight: Setting an LED's brightness failed (-6)
The ACPI QEVT function used to read the interrupt status register also
has a 10ms sleep at the end. Without that there are problems with
reading multiple events following directly after each other resulting
in the following error message being logged:
thinkpad-t14s-ec 4-0028: Failed to read event
Fixes: 60b7ab6ce030 ("platform: arm64: thinkpad-t14s-ec: new driver")
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Link: https://patch.msgid.link/20251119-thinkpad-t14s-ec-improvements-v2-2-441219857c02@kernel.org
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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Fix a race condition, that an input key related interrupt might be
triggered before the input handler has been registered, which results
in a NULL pointer dereference. This can happen if the user enables
the keyboard backlight shortly before the driver is being probed.
This fixes the following backtrace visible in dmesg:
Unable to handle kernel NULL pointer dereference at virtual address 00000000000000e0
...
Call trace:
sparse_keymap_report_event+0x2c/0x978 [sparse_keymap] (P)
t14s_ec_irq_handler+0x190/0x3e8 [lenovo_thinkpad_t14s]
irq_thread_fn+0x30/0xb8
irq_thread+0x18c/0x3b0
kthread+0x148/0x228
ret_from_fork+0x10/0x20
Fixes: 60b7ab6ce030 ("platform: arm64: thinkpad-t14s-ec: new driver")
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Reviewed-by: Bryan O'Donoghue <bod@kernel.org>
Link: https://patch.msgid.link/20251119-thinkpad-t14s-ec-improvements-v2-1-441219857c02@kernel.org
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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Introduce EC driver for the ThinkPad T14s Gen6 Snapdragon, which is in
theory compatible with ThinkPad ACPI. On Linux the system is booted with
device tree, which is not supported by the ThinkPad ACPI driver
(drivers/platform/x86/lenovo/thinkpad_acpi.c). Also most of the hardware
compatibility is handled via ACPI tables, which are obviously not used
when booting via device tree. Thus adding DT compatibility to the
existing driver is not worth it as there is almost no code sharing.
The driver currently exposes features, which are not available
via other means:
* Extra Keys
* System LEDs
* Keyboard Backlight Control
The driver has been developed by reading the ACPI DSDT. There
are some more features around thermal control, which are not
yet supported by the driver.
The speaker mute and mic mute LEDs need some additional changes
in the ALSA UCM to be set automatically.
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on Thinkpad T14S OLED
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Link: https://patch.msgid.link/20250918-thinkpad-t14s-ec-v5-2-ac0bc6382c5c@collabora.com
[ij: folded in patch from Chen Ni <nichen@iscas.ac.cn>]
Link: https://patch.msgid.link/20250926091302.817919-1-nichen@iscas.ac.cn
[ij: folded in patch from Lukas Bulwahn <lbulwahn@redhat.com>]
Link: https://patch.msgid.link/20250926071859.138396-1-lukas.bulwahn@redhat.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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Merge the fixes branch into the for-next branch to resolve Makefile
conflict and include the power supply accessor work that is required
by the upcoming Uniwill driver.
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Make sure to drop the OF node reference taken when creating the Gaokun
auxiliary devices when the devices are later released.
Fixes: 7636f090d02e ("platform: arm64: add Huawei Matebook E Go EC driver")
Cc: Pengyu Luo <mitltlatltl@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Pengyu Luo <mitltlatltl@gmail.com>
Link: https://lore.kernel.org/r/20250708085358.15657-1-johan@kernel.org
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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The auxiliary device creation of this driver is simple enough to
use the available auxiliary device creation helper.
Use it and remove some boilerplate code.
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Link: https://lore.kernel.org/r/20250610-yoga-aux-v1-1-d6115aa1683c@baylibre.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform drivers updates from Ilpo Järvinen:
"The changes are mostly business as usual. Besides pdx86 changes, there
are a few power supply changes needed for related pdx86 features, move
of oxpec driver from hwmon (oxp-sensors) to pdx86, and one FW version
warning to hid-asus.
Highlights:
- alienware-wmi-wmax:
- Add HWMON support
- Add ABI and admin-guide documentation
- Expose GPIO debug methods through debug FS
- Support manual fan control and "custom" thermal profile
- amd/hsmp:
- Add sysfs files to show HSMP telemetry
- Report power readings and limits via hwmon
- amd/isp4: Add AMD ISP platform config for OV05C10
- asus-wmi:
- Refactor Ally suspend/resume to work better with older FW
- hid-asus: check ROG Ally MCU version and warn about old FW versions
- dasharo-acpi:
- Add driver for Dasharo devices supporting fans and temperatures
monitoring
- dell-ddv:
- Expose the battery health and manufacture date to userspace
using power supply extensions
- Implement the battery matching algorithm
- dell-pc:
- Improve error propagation
- Use faux device
- int3472:
- Add delays to avoid GPIO regulator spikes
- Add handshake pin support
- Make regulator supply name configurable and allow registering
more than 1 GPIO regulator
- Map mt9m114 powerdown pin to powerenable
- intel/pmc: Add separate SSRAM Telemetry driver
- intel-uncore-freq: Add attributes to show agent types and die ID
- ISST:
- Support SST-TF revision 2 (allows more cores per bucket)
- Support SST-PP revision 2 (fabric 1 frequencies)
- Remove unnecessary SST MSRs restore (the package retains MSRs
despite CPU offlining)
- mellanox: Add support for SN2201, SN4280, SN5610, and SN5640
- mellanox: mlxbf-pmc: Support additional PMC blocks
- oxpec:
- Add OneXFly variants
- Add support for charge limit, charge thresholds, and turbo LED
- Distinguish current X1 variants to avoid unwanted matching to
new variants
- Follow hwmon conventions
- Move from hwmon/oxp-sensors to platform/x86 to match the
enlarged scope
- power supply:
- Add inhibit-charge-awake (needed by oxpec)
- Add additional battery health status values ("blown fuse" and
"cell imbalance") (needed by dell-ddv)
- powerwell-ec: Add driver for Portwell EC supporting GPIO and watchdog
- thinkpad-acpi: Support camera shutter switch hotkey
- tuxedo: Add virtual LampArray for TUXEDO NB04 devices
- tools/power/x86/intel-speed-select:
- Support displaying SST-PP revision 2 fields
- Skip uncore frequency update on newer generations of CPUs
- Miscellaneous cleanups / refactoring / improvements"
* tag 'platform-drivers-x86-v6.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (112 commits)
thermal/drivers/acerhdf: Constify struct thermal_zone_device_ops
platform/x86/amd/hsmp: fix building with CONFIG_HWMON=m
platform/x86: asus-wmi: fix build without CONFIG_SUSPEND
docs: ABI: Fix "aassociated" to "associated"
platform/x86: Add AMD ISP platform config for OV05C10
Documentation: admin-guide: pm: Add documentation for die_id
platform/x86/intel-uncore-freq: Add attributes to show die_id
platform/x86/intel: power-domains: Add interface to get Linux die ID
Documentation: admin-guide: pm: Add documentation for agent_types
platform/x86/intel-uncore-freq: Add attributes to show agent types
platform/x86/tuxedo: Prevent invalid Kconfig state
platform/x86: dell-ddv: Expose the battery health to userspace
platform/x86: dell-ddv: Expose the battery manufacture date to userspace
platform/x86: dell-ddv: Implement the battery matching algorithm
power: supply: core: Add additional health status values
platform/x86/amd/hsmp: acpi: Add sysfs files to display HSMP telemetry
platform/x86/amd/hsmp: Report power via hwmon sensors
platform/x86/amd/hsmp: Use a single DRIVER_VERSION for all hsmp modules
platform/mellanox: mlxreg-dpu: Fix smatch warnings
platform: mellanox: nvsw-sn2200: Fix .items in nvsw_sn2201_busbar_hotplug
...
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This is the new API for allocating DRM bridges.
Acked-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250424-drm-bridge-convert-to-alloc-api-v2-2-8f91a404d86b@bootlin.com
Signed-off-by: Louis Chauvet <louis.chauvet@bootlin.com>
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Enabling the compile test should not cause automatic enabling of all
drivers, but only allow to choose to compile them.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250417074648.81528-1-krzysztof.kozlowski@linaro.org
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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Backmerging to get v6.15-rc1 into drm-misc-next. Also fixes a
build issue when enabling CONFIG_DRM_SCHED_KUNIT_TEST.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
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Remove unnecessary semicolons reported by Coccinelle/coccicheck and the
semantic patch at scripts/coccinelle/misc/semicolon.cocci.
Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Link: https://lore.kernel.org/r/20250327025244.1790897-1-nichen@iscas.ac.cn
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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The drm_bridge structure contains an encoder pointer that is widely used
by bridge drivers. This pattern is largely documented as deprecated in
other KMS entities for atomic drivers.
However, one of the main use of that pointer is done in attach to just
call drm_bridge_attach on the next bridge to add it to the bridge list.
While this dereferences the bridge->encoder pointer, it's effectively
the same encoder the bridge was being attached to.
We can make it more explicit by adding the encoder the bridge is
attached to to the list of attach parameters. This also removes the need
to dereference bridge->encoder in most drivers.
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250313-bridge-connector-v6-1-511c54a604fb@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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There are three variants of which Huawei released the first two
simultaneously.
Huawei Matebook E Go LTE(sc8180x), codename seems to be gaokun2.
Huawei Matebook E Go(sc8280xp@3.0GHz), codename must be gaokun3. (see [1])
Huawei Matebook E Go 2023(sc8280xp@2.69GHz), codename should be also gaokun3.
Adding support for the latter two variants for now, this driver should
also work for the sc8180x variant according to acpi table files, but I
don't have the device to test yet.
Different from other Qualcomm Snapdragon sc8280xp based machines, the
Huawei Matebook E Go uses an embedded controller while others use
a system called PMIC GLink. This embedded controller can be used to
perform a set of various functions, including, but not limited to:
- Battery and charger monitoring;
- Charge control and smart charge;
- Fn_lock settings;
- Tablet lid status;
- Temperature sensors;
- USB Type-C notifications (ports orientation, DP alt mode HPD);
- USB Type-C PD (according to observation, up to 48w).
Add a driver for the EC which creates devices for UCSI and power supply
devices.
This driver is inspired by the following drivers:
drivers/platform/arm64/acer-aspire1-ec.c
drivers/platform/arm64/lenovo-yoga-c630.c
drivers/platform/x86/huawei-wmi.c
Also thanks for reviewers' working. They have made this patch improve
a lot.
[1] https://bugzilla.kernel.org/show_bug.cgi?id=219645
Signed-off-by: Pengyu Luo <mitltlatltl@gmail.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20250214180656.28599-3-mitltlatltl@gmail.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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asm/unaligned.h is always an include of asm-generic/unaligned.h;
might as well move that thing to linux/unaligned.h and include
that - there's nothing arch-specific in that header.
auto-generated by the following:
for i in `git grep -l -w asm/unaligned.h`; do
sed -i -e "s/asm\/unaligned.h/linux\/unaligned.h/" $i
done
for i in `git grep -l -w asm-generic/unaligned.h`; do
sed -i -e "s/asm-generic\/unaligned.h/linux\/unaligned.h/" $i
done
git mv include/asm-generic/unaligned.h include/linux/unaligned.h
git mv tools/include/asm-generic/unaligned.h tools/include/linux/unaligned.h
sed -i -e "/unaligned.h/d" include/asm-generic/Kbuild
sed -i -e "s/__ASM_GENERIC/__LINUX/" include/linux/unaligned.h tools/include/linux/unaligned.h
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The Lenovo Yoga C630 Embedded Controller is only present on the Qualcomm
Snapdragon-based Lenovo Yoga C630 laptop. Hence add a dependency on
ARCH_QCOM, to prevent asking the user about this driver when configuring
a kernel without Qualcomm SoC support.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/0e4c9ffdc8a5caffcda2afb8d5480900f7adebf6.1720707932.git.geert+renesas@glider.be
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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The Acer Aspire 1 Embedded Controller is only present on the Qualcomm
Snapdragon-based Acer Aspire 1 laptop. Hence add a dependency on
ARCH_QCOM, to prevent asking the user about this driver when configuring
a kernel without Qualcomm SoC support.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Nikita Travkin <nikita@trvn.ru>
Link: https://lore.kernel.org/r/f5f38709c01d369ed9e375ceb2a9a12986457a1a.1720707932.git.geert+renesas@glider.be
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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Add missing selection of AUXILIARY_BUS as the driver uses aux bus to
create subdevices.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202406260704.roVRkyPi-lkp@intel.com/
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20240626-yoga-fix-aux-v1-1-6aaf9099b18e@linaro.org
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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Lenovo Yoga C630 WOS is a laptop using Snapdragon 850 SoC. Like many
laptops it uses an embedded controller (EC) to perform various platform
operations, including, but not limited, to Type-C port control or power
supply handlng.
Add the driver for the EC, that creates devices for UCSI and power
supply devices.
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20240614-yoga-ec-driver-v7-2-9f0b9b40ae76@linaro.org
[ij: added #include <linux/cleanup.h>]
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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Acer Aspire 1 is a Snapdragon 7c based laptop. It uses an embedded
controller to perform a set of various functions, such as:
- Battery and charger monitoring;
- Keyboard layout control (i.e. fn_lock settings);
- USB Type-C DP alt mode HPD notifications;
- Laptop lid status.
Unfortunately, while all this functionality is implemented in ACPI, it's
currently not possible to use ACPI to boot Linux on such Qualcomm
devices. To allow Linux to still support the features provided by EC,
this driver reimplments the relevant ACPI parts. This allows us to boot
the laptop with Device Tree and retain all the features.
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Nikita Travkin <nikita@trvn.ru>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20240315-aspire1-ec-v5-3-f93381deff39@trvn.ru
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Some ARM64 based laptops and computers require vendor/board specific
drivers for their embedded controllers. Even though usually the most
important functionality of those devices is implemented inside ACPI,
unfortunately Linux doesn't currently have great support for ACPI on
platforms like Qualcomm Snapdragon that are used in most ARM64 laptops
today. Instead Linux relies on Device Tree for Qualcomm based devices
and it's significantly easier to reimplement the EC functionality in
a dedicated driver than to make use of ACPI code.
This commit introduces a new platform/arm64 subdirectory to give a
place to such drivers for EC-like devices.
A new MAINTAINERS entry is added for this directory. Patches to files in
this directory will be taken up by the platform-drivers-x86 team (i.e.
Hans de Goede and Ilpo Järvinen) with additional review from Bryan
O'Donoghue to represent ARM64 maintainers.
Signed-off-by: Nikita Travkin <nikita@trvn.ru>
Acked-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20240315-aspire1-ec-v5-2-f93381deff39@trvn.ru
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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