linux-toradex.git/drivers/platform, branch v6.11-rc5

Merge tag 'acpi-6.11-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2024-08-23T23:39:35+00:00

Pull ACPI fix from Rafael Wysocki:
 "Fix backlight control on a Dell All In One system where a backlight
  controller board is attached to a UART port and the dell-uart
  backlight driver binds to it, but the backlight is actually controlled
  by other means (Hans de Goede)"

* tag 'acpi-6.11-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: video: Add backlight=native quirk for Dell OptiPlex 7760 AIO
  platform/x86: dell-uart-backlight: Use acpi_video_get_backlight_type()
  ACPI: video: Add Dell UART backlight controller detection

Merge tag 'platform-drivers-x86-v6.11-4' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

2024-08-21T22:34:27+00:00

Pull x86 platform driver fixes from Ilpo Järvinen:

 - ISST: Fix an error-handling corner case

 - platform/surface: aggregator: Minor corner case fix and new HW
   support

* tag 'platform-drivers-x86-v6.11-4' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86:
  platform/x86: ISST: Fix return value on last invalid resource
  platform/surface: aggregator: Fix warning when controller is destroyed in probe
  platform/surface: aggregator_registry: Add support for Surface Laptop 6
  platform/surface: aggregator_registry: Add fan and thermal sensor support for Surface Laptop 5
  platform/surface: aggregator_registry: Add support for Surface Laptop Studio 2
  platform/surface: aggregator_registry: Add support for Surface Laptop Go 3
  platform/surface: aggregator_registry: Add Support for Surface Pro 10
  platform/x86: asus-wmi: Add quirk for ROG Ally X

platform/x86: ISST: Fix return value on last invalid resource

2024-08-20T11:19:09+00:00

When only the last resource is invalid, tpmi_sst_dev_add() is returing
error even if there are other valid resources before. This function
should return error when there are no valid resources.

Here tpmi_sst_dev_add() is returning "ret" variable. But this "ret"
variable contains the failure status of last call to sst_main(), which
failed for the invalid resource. But there may be other valid resources
before the last entry.

To address this, do not update "ret" variable for sst_main() return
status.

If there are no valid resources, it is already checked for by !inst
below the loop and -ENODEV is returned.

Fixes: 9d1d36268f3d ("platform/x86: ISST: Support partitioned systems")
Signed-off-by: Srinivas Pandruvada 
Cc: stable@vger.kernel.org # 6.10+
Link: https://lore.kernel.org/r/20240816163626.415762-1-srinivas.pandruvada@linux.intel.com
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen

platform/x86: dell-uart-backlight: Use acpi_video_get_backlight_type()

2024-08-19T13:58:45+00:00

The dell-uart-backlight driver supports backlight control on Dell All In
One (AIO) models using a backlight controller board connected to an UART.

In DSDT this uart port will be defined as:

   Name (_HID, "DELL0501")
   Name (_CID, EisaId ("PNP0501")

Now the first AIO has turned up which has not only the DSDT bits for this,
but also an actual controller attached to the UART, yet it is not using
this controller for backlight control.

Use the acpi_video_get_backlight_type() function from the ACPI video-detect
code to check if the dell-uart-backlight driver should actually be used.
This allows reusing the existing ACPI video-detect infra to override
the backlight control method on the commandline or with DMI quirks.

Fixes: 484bae9e4d6a ("platform/x86: Add new Dell UART backlight driver")
Cc: All applicable 
Signed-off-by: Hans de Goede 
Reviewed-by: Andy Shevchenko 
Link: https://patch.msgid.link/20240814190159.15650-3-hdegoede@redhat.com
Signed-off-by: Rafael J. Wysocki

platform/surface: aggregator: Fix warning when controller is destroyed in probe

2024-08-13T08:20:19+00:00

There is a small window in ssam_serial_hub_probe() where the controller
is initialized but has not been started yet. Specifically, between
ssam_controller_init() and ssam_controller_start(). Any failure in this
window, for example caused by a failure of serdev_device_open(),
currently results in an incorrect warning being emitted.

In particular, any failure in this window results in the controller
being destroyed via ssam_controller_destroy(). This function checks the
state of the controller and, in an attempt to validate that the
controller has been cleanly shut down before we try and deallocate any
resources, emits a warning if that state is not SSAM_CONTROLLER_STOPPED.

However, since we have only just initialized the controller and have not
yet started it, its state is SSAM_CONTROLLER_INITIALIZED. Note that this
is the only point at which the controller has this state, as it will
change after we start the controller with ssam_controller_start() and
never revert back. Further, at this point no communication has taken
place and the sender and receiver threads have not been started yet (and
we may not even have an open serdev device either).

Therefore, it is perfectly safe to call ssam_controller_destroy() with a
state of SSAM_CONTROLLER_INITIALIZED. This, however, means that the
warning currently being emitted is incorrect. Fix it by extending the
check.

Fixes: c167b9c7e3d6 ("platform/surface: Add Surface Aggregator subsystem")
Signed-off-by: Maximilian Luz 
Link: https://lore.kernel.org/r/20240811124645.246016-1-luzmaximilian@gmail.com
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen

platform/surface: aggregator_registry: Add support for Surface Laptop 6

2024-08-13T08:01:20+00:00

Add SAM client device nodes for the Surface Laptop Studio 6 (SL6). The
SL6 is similar to the SL5, with the typical battery/AC, platform
profile, and HID nodes. It also has support for the newly supported fan
interface.

Signed-off-by: Maximilian Luz 
Link: https://lore.kernel.org/r/20240811131948.261806-6-luzmaximilian@gmail.com
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen

platform/surface: aggregator_registry: Add fan and thermal sensor support for Surface Laptop 5

2024-08-13T08:01:18+00:00

The EC on the Surface Laptop 5 exposes the fan interface. With the
recently introduced driver for it, we can now also enable it here. In
addition, also enable the thermal sensor interface.

Signed-off-by: Maximilian Luz 
Link: https://lore.kernel.org/r/20240811131948.261806-5-luzmaximilian@gmail.com
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen

platform/surface: aggregator_registry: Add support for Surface Laptop Studio 2

2024-08-13T08:01:16+00:00

Add SAM client device nodes for the Surface Laptop Studio 2 (SLS2). The
SLS2 is quite similar to the SLS1, but it does not provide the touchpad
as a SAM-HID device. Therefore, add a new node group for the SLS2 and
update the comments accordingly. In addition, it uses the new fan
control interface.

Signed-off-by: Maximilian Luz 
Link: https://lore.kernel.org/r/20240811131948.261806-4-luzmaximilian@gmail.com
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen

platform/surface: aggregator_registry: Add support for Surface Laptop Go 3

2024-08-13T08:01:14+00:00

Add SAM client device nodes for the Surface Laptop Go 3. It seems to use
the same SAM client devices as the Surface Laptop Go 1 and 2, so re-use
their node group.

Signed-off-by: Maximilian Luz 
Link: https://lore.kernel.org/r/20240811131948.261806-3-luzmaximilian@gmail.com
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen

platform/surface: aggregator_registry: Add Support for Surface Pro 10

2024-08-13T08:01:11+00:00

Add SAM client device nodes for the Surface Pro 10. It seems to use the
same SAM client devices as the Surface Pro 9, so re-use its node group.

Signed-off-by: Maximilian Luz 
Link: https://lore.kernel.org/r/20240811131948.261806-2-luzmaximilian@gmail.com
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Ilpo Järvinen