linux-toradex.git/arch/x86/platform/olpc, branch master

x86/platform/olpc: Use named initializers for acpi_device_id

2026-09-30T03:35:00+00:00

Use a named initializer for the acpi_device_id fields which makes the code
more readable and consistent with how lists are initialized in the rest of the
kernel code base. Also drop explicitly setting fields to 0 where it is
redundant.

While at it - unify the list terminator to have a single space between the
brackets and no trailing comma.

Signed-off-by: Pawel Zalewski (The Capable Hub) 
Signed-off-by: Borislav Petkov (AMD) 
Link: https://patch.msgid.link/20260807-acpi-platform-v1-1-1507662916ed@thegoodpenguin.co.uk

Merge tag 'platform-drivers-x86-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

2026-08-24T17:16:35+00:00

Pull x86 platform driver updates from Ilpo Järvinen
 "Highlights:

  Major refactoring effort: stop setting acpi_device_name/class() and
  pnp.device_class to facilitate their eventual removal

  Many rollback/remove path fixes (presumably mostly found by AI)

  Miscellaneous cleanups / refactoring / improvements

  amd/halo:
   - Add Halo RGB LED driver

  amd/hsmp:
   - Properly serialize probe, remove, and data paths
   - Add support for protocol v7 used by Family 1AH Model 80H
   - Fix error checking corner cases (largely from AI review)
   - Reject negative power cap

  amd/pmc:
   - Improve behavior on platforms that do not support STB
   - Add T14 Gen2 AMD (20XL) to s2idle quirk list

  amd/pmf:
   - Add ioctl interface to retrieve device metrics
   - Add support for new metrics tables used by Family 1AH Model 80H

  qcom-hamoa-ec (arm64):
   - Reject short responses

  asus-nb-wmi:
   - Support ProArt key on ASUS ProArt PX13

  asus-armoury:
   - Gate PPT writes behind active fan curve
   - Add power limits for more models

  dell-wmi-base:
   - Fix handling of ultra performance key

  dell-wmi-sysman:
   - Don't hex dump attribute security buffer

  hp-bioscfg:
   - Various fixes
   - Improve reduced ACPI packages support (necessary for HP EliteBook 840 G2)

  lg-laptop:
   - Fix LED resource handling
   - Add support for events used in newer models
   - Fix keyboard backlight support on LG Gram 16T90SP

  hp-wmi:
   - Generalize thermal params to board params
   - Manage CPU and GPU PWM independently
   - Add GPU MUX switch support
   - Add Victus 15-fb0xxx support
   - Add OMEN MAX 16-ak0xxx, OMEN 16-n0xxx, OMEN 16-wd0xxx, OMEN
     16-wf0xxx, and OMEN board ID 8D88 support
   - Add OMEN Transcend 16-u0xxx support

  huawei:
   - Add support for Fn-lock ACPI interface found on newer Huawei
     laptops such as MateBook 14 2024

  ISST:
   - Improve input validation (many fixes)
   - Disallow SST-CP (core-power) feature if perf profile add fails

  lenovo/yb9-kbdock:
   - Add driver for Yoga Book 9 14IAH10

  lenovo/ymc:
   - Extend hinge switch query to support Yoga 9 2-in-1 14IPH11
   - Prevent loading on Yoga Book 9 14IAH10 to avoid duplicated input
    nodes

  msi-ec:
   - Add MSI Raider A18 HX A9WJG and MSI Katana GF76 11UEK support

  msi-wmi:
   - Add MSI Claw M-Center keys support

  oxpec:
   - Add support for OneXPlayer X2 Mini Pro

  redmi-wmi:
   - Report kbd backlight cycle, OEM preset power mode, and FnLock
     toggle events to userspace

  samsung-galaxybook:
   - Add Samsung Galaxy Book6 Pro support

  thinkpad_acpi:
   - Add USB-C Security support

  uniwill-laptop:
   - Add keyboard backlight, AC auto boot, and USB powershare support
   - Add MACHENIKE L16 Pro, AiStone X4SP4NAL, and Avell A60 MUV support
   - Make lightbar max brightness configurable and add support for
     LAPQC71A/B"

* tag 'platform-drivers-x86-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (152 commits)
  platform/x86: think-lmi: Fix current password length check
  platform/x86: redmi-wmi: report EC state change events
  MAINTAINERS: update Intel PMC Core maintainer contact
  platform/x86: oxpec: Add support for OneXPlayer X2 Mini Pro
  platform/x86: thinkpad_acpi: Fix fan speed reporting on Edge E330
  platform/x86: msi-ec: Add MSI Katana GF76 11UEK EC firmware
  platform/x86: think-lmi: Fix certificate thumbprint sysfs output
  mlxbf-bootctl: fix the build error with FIELD_PREP()
  platform/x86: think-lmi: Free system certificate signatures
  platform/x86: ISST: Add a NULL check for sst_inst[]
  platform/x86: ISST: Return error during profile addition
  platform/x86: ISST: Just allow 2 bits for SST feature enable
  platform/x86: ISST: Use PP level enable mask
  platform/x86: ISST: Validate parameter for frequency and priority
  platform/x86: ISST: Validate parameter for core power state
  platform/x86: ISST: Validate max level for set feature
  platform/x86: ISST: Validate logical CPU id and clos id
  platform/x86: ISST: Validate level in perf mask ioctls
  platform/x86: ISST: Validate socket ID in clos_assoc ioctl
  platform/x86/amd/hsmp: Reject negative power cap writes in hwmon
  ...

Merge tag 'gpio-updates-for-v7.3-rc1-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

2026-08-19T16:10:07+00:00

Pull gpio updates from Bartosz Golaszewski:
 "GPIO core:
   - extend the gpio-regmap abstraction layer with more features
     allowing users to override configuration setting, translate
     register values and masks and enable/disable interrupts
   - extend GPIO kunit tests with suites verifying probe ordering by
     software node devlink support and software node hogs
   - shrink GPIO kunit initialization code
   - coding style updates (remove commas from sentinels where
     applicable)
   - with all users now converted treewide to using real firmware node
     links for software node GPIO lookup: remove the deprecated
     label-matching mechanism from from GPIO core
   - drop redundant return value check of nonseekable_open() in
     gpiolib-cdev
   - use IRQ trigger helpers where applicable

  Driver updates:
   - refactor error paths and logging in gpio-nomadik
   - use more modern interfaces for getting resources in gpio-rockchip,
     gpio-bt8xx and gpio-pca9570
   - add missing MODULE_DEVICE_TABLE() to gpio-sifive and gpio-vf610
   - drop unused FILONOFF macro from gpio-rcar
   - extend build coverage of ioport GPIO drivers with COMPILE_TEST=y
   - only enable the gpio-rtd driver by default with ARCH_REALTEK=y to
     avoid bloating the build
   - refactor coding style in several drivers
   - use correct endianess translation in gpio-pcf85x
   - add wake-up interrupt support to gpio-mvebu
   - apply initial value in direction output setter in gpio-by-pinctrl

  Misc:
   - replace linux/gpio.h inclusions treewide with linux/gpio/legacy.h
     which now exports all the deprecated APIs
   - select GPIOLIB_LEGACY in Kconfig where required treewide
   - use software nodes for gpio-keys in MFD drivers

  Devicetree bindings:
   - describe the realtek rtd1625 GPIO controller
   - document new models for gpio-pca95xx and gpio-cadence
   - document new property in gpio-rockchip"

* tag 'gpio-updates-for-v7.3-rc1-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (61 commits)
  gpio: gpio-by-pinctrl: Apply initial value in direction output wrapper
  dt-bindings: gpio: rockchip,gpio-bank: Add rockchip,grf property
  gpio: Use IRQ trigger mask helpers
  gpio: allow COMPILE_TEST for IOPORT drivers
  gpio: realtek: Add driver for Realtek DHC RTD1625 SoC
  gpio: regmap: Add IRQ enable/disable helpers
  gpio: regmap: Add set_config callback
  gpio: regmap: Add value_xlate callback
  gpio: regmap: Add gpio_regmap_operation to extend reg_mask_xlate callback
  gpio: regmap: Order kernel-doc descriptions with the actual appearance
  gpio: regmap: Apply default resource callbacks for regmap IRQ chip
  gpio: regmap: Provide default IRQ resource request and release callbacks
  Revert "gpio: realtek: Add driver for Realtek DHC RTD1625 SoC"
  gpib: gpio: replace linux/gpio.h inclusion
  Input: matrix_keyboard - replace linux/gpio.h inclusion
  phy: replace linux/gpio.h inclusions
  pcmcia: replace linux/gpio.h inclusions
  ASoC: replace linux/gpio.h inclusions
  mfd: replace linux/gpio.h inclusions
  sh: replace linux/gpio.h inclusions
  ...

x86/olpc: select GPIOLIB_LEGACY

2026-07-24T18:12:48+00:00

The OLPC GPIO controller sets up a fixed number space that is used
by at least two drivers:

arch/x86/platform/olpc/olpc-xo1-sci.c: In function 'setup_ec_sci':
arch/x86/platform/olpc/olpc-xo1-sci.c:358:13: error: implicit declaration of function 'gpio_request' [-Wimplicit-function-declaration]
  358 |         r = gpio_request(OLPC_GPIO_ECSCI, "OLPC-ECSCI");
      |             ^~~~~~~~~~~~
sound/pci/cs5535audio/cs5535audio_olpc.c: In function 'olpc_analog_input':
sound/pci/cs5535audio/cs5535audio_olpc.c:41:9: error: implicit declaration of function 'gpio_set_value'; did you mean 'gpiod_set_value'? [-Wimplicit-function-declaration]
   41 |         gpio_set_value(OLPC_GPIO_MIC_AC, on);

The AMD Geode platform that this is based on is now marked as
'Orphaned' in Kconfig, and it is likely that there are no XO1
users on modern kernels, but so far there is no consensus on
removing it entirely.

Select CONFIG_GPIOLIB_LEGACY for this platform and make sure the
sound driver portion cannot be compiled without this.

Acked-by: Borislav Petkov (AMD) 
Acked-by: Takashi Iwai 
Reviewed-by: Bartosz Golaszewski 
Reviewed-by: Linus Walleij 
Acked-by: Dmitry Torokhov  # for input
Signed-off-by: Arnd Bergmann

x86/platform/olpc: xo15: Stop setting acpi_device_name/class()

2026-07-09T13:44:08+00:00

The driver sets acpi_device_name() and acpi_device_class() which are
never read afterward, so make it stop doing that and drop the symbols
defined specifically for this purpose.

No intentional functional impact.

This will facilitate the removal of device_name and device_class from
struct acpi_device_pnp in the future.

Signed-off-by: Rafael J. Wysocki 
Reviewed-by: Andy Shevchenko 
Link: https://patch.msgid.link/2866696.mvXUDI8C0e@rafael.j.wysocki
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen

x86/olpc: Stop using 32-bit MSR interfaces

2026-07-03T09:33:59+00:00

The 32-bit MSR interface rdmsr() is planned to be removed. Use the
related 64-bit variant instead.

Signed-off-by: Juergen Gross 
Signed-off-by: Ingo Molnar 
Link: https://patch.msgid.link/20260629060526.3638272-29-jgross@suse.com

x86/platform/olpc: xo15: Convert ACPI driver to a platform one

2026-05-11T12:08:00+00:00

In all cases in which a struct acpi_driver is used for binding a driver
to an ACPI device object, a corresponding platform device is created by
the ACPI core and that device is regarded as a proper representation of
underlying hardware.  Accordingly, a struct platform_driver should be
used by driver code to bind to that device.  There are multiple reasons
why drivers should not bind directly to ACPI device objects [1].

Overall, it is better to bind drivers to platform devices than to their
ACPI companions, so convert the olpc-xo15-sci ACPI driver to a platform
one.

After this change, the wakeup source added by the driver will appear
under the platform device used for driver binding, but the sysfs
attribute added by the driver under the ACPI companion of that device
will stay there in case there are utilities in user space expecting it
to be there.

While this is not expected to alter functionality, it changes sysfs
layout and so it will be visible to user space.

Link: https://lore.kernel.org/all/2396510.ElGaqSPkdT@rafael.j.wysocki/ [1]
Signed-off-by: Rafael J. Wysocki 
Link: https://patch.msgid.link/1970421.CQOukoFCf9@rafael.j.wysocki
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen

x86/platform/olpc: xo15: Drop wakeup source on driver removal

2026-05-11T12:07:58+00:00

Prevent leaking a wakeup source object after removing the driver by
adding appropriate cleanup code to its remove callback function.

Fixes: a0f30f592d2d ("x86, olpc: Add XO-1.5 SCI driver")
Signed-off-by: Rafael J. Wysocki 
Link: https://patch.msgid.link/2069931.usQuhbGJ8B@rafael.j.wysocki
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen

x86/platform/olpc: Replace strcpy() with strscpy() in xo15_sci_add()

2026-01-05T14:58:57+00:00

strcpy() has been deprecated¹ because it performs no bounds checking on the
destination buffer, which can lead to buffer overflows. Use the safer
strscpy() instead.

  ¹ https://www.kernel.org/doc/html/latest/process/deprecated.html#strcpy

Signed-off-by: Thorsten Blum 
Signed-off-by: Borislav Petkov (AMD) 
Link: https://patch.msgid.link/20251124125455.5495-2-thorsten.blum@linux.dev

x86/msr: Rename 'wrmsrl()' to 'wrmsrq()'

2025-04-10T09:58:33+00:00

Suggested-by: "H. Peter Anvin" 
Signed-off-by: Ingo Molnar 
Acked-by: Peter Zijlstra (Intel) 
Cc: Juergen Gross 
Cc: Dave Hansen 
Cc: Xin Li 
Cc: Linus Torvalds