diff options
| author | Armin Wolf <W_Armin@gmx.de> | 2026-05-30 19:08:10 +0200 |
|---|---|---|
| committer | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2026-07-06 11:27:06 +0300 |
| commit | e02c8d7a197d8a94e30fdcdee2a626d8a9ae1549 (patch) | |
| tree | 07e00ebdda6355adaf0acb87b78e7c72783d5851 /Documentation | |
| parent | c393505bab5b1fa25aa702c04a25b3bae0a570ee (diff) | |
| download | linux-e02c8d7a197d8a94e30fdcdee2a626d8a9ae1549.tar.gz linux-e02c8d7a197d8a94e30fdcdee2a626d8a9ae1549.zip | |
platform/x86: uniwill-laptop: Add support for USB powershare
Some devices support a "USB powershare" feature where the system will
continue to provide power via the USB ports when hibernating or
powered off.
Add support for this feaure.
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://patch.msgid.link/20260530170813.10166-5-W_Armin@gmx.de
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-driver-uniwill-laptop | 16 | ||||
| -rw-r--r-- | Documentation/admin-guide/laptops/uniwill-laptop.rst | 7 |
2 files changed, 22 insertions, 1 deletions
diff --git a/Documentation/ABI/testing/sysfs-driver-uniwill-laptop b/Documentation/ABI/testing/sysfs-driver-uniwill-laptop index 57272f906184..943f92c6b561 100644 --- a/Documentation/ABI/testing/sysfs-driver-uniwill-laptop +++ b/Documentation/ABI/testing/sysfs-driver-uniwill-laptop @@ -86,6 +86,20 @@ Contact: Armin Wolf <W_Armin@gmx.de> Description: Allows userspace applications to configure if the device should boot automatically when being connected to a power source. Writing "1"/"0" into this file - enables/disables this functionality. + enables/disables this functionality. Enabling both AC auto boot and USB powershare + at the same time is not supported. Reading this file returns the current status of the AC auto boot functionality. + +What: /sys/bus/platform/devices/INOU0000:XX/usb_powershare_high +Date: March 2026 +KernelVersion: 7.1 +Contact: Armin Wolf <W_Armin@gmx.de> +Description: + Allows userspace applications to configure if the device should continue to provide + power via the USB ports when hibernating or powered off. Might also increase the + power budget available to USB ports on some devices. Writing "1"/"0" into this + file enables/disables this functionality. Enabling both USB powershare and AC auto + boot at the same time is not supported. + + Reading this file returns the current status of the USB powershare functionality. diff --git a/Documentation/admin-guide/laptops/uniwill-laptop.rst b/Documentation/admin-guide/laptops/uniwill-laptop.rst index b6213fb1d3e0..be50b45b82ef 100644 --- a/Documentation/admin-guide/laptops/uniwill-laptop.rst +++ b/Documentation/admin-guide/laptops/uniwill-laptop.rst @@ -105,6 +105,13 @@ The ``uniwill-laptop`` driver allows the user to configure if the system should boot when being connected to a power source, see Documentation/ABI/testing/sysfs-driver-uniwill-laptop for details. +USB Powershare +-------------- + +The ``uniwill-laptop`` driver allows the user to configure if the system should continue to +provide power via the USB ports when hibernating or powered off, see +Documentation/ABI/testing/sysfs-driver-uniwill-laptop for details. + References ========== |