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| author | Shyam Sundar S K <Shyam-sundar.S-k@amd.com> | 2023-12-12 02:47:01 +0100 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2023-12-18 12:47:46 +0100 |
| commit | d0ba7ad438dfed944232cf8c96141ae5057605ee (patch) | |
| tree | f169bbc58434a1f1a934db5d1bc167eac8288c5b /Documentation | |
| parent | platform/x86/amd/pmf: Add support update p3t limit (diff) | |
| download | linux-d0ba7ad438dfed944232cf8c96141ae5057605ee.tar.xz linux-d0ba7ad438dfed944232cf8c96141ae5057605ee.zip | |
platform/x86/amd/pmf: Add support to update system state
PMF driver based on the output actions from the TA can request to update
the system states like entering s0i3, lock screen etc. by generating
an uevent. Based on the udev rules set in the userspace the event id
matching the uevent shall get updated accordingly using the systemctl.
Sample udev rules under Documentation/admin-guide/pmf.rst.
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20231212014705.2017474-9-Shyam-sundar.S-k@amd.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/admin-guide/index.rst | 1 | ||||
| -rw-r--r-- | Documentation/admin-guide/pmf.rst | 24 |
2 files changed, 25 insertions, 0 deletions
diff --git a/Documentation/admin-guide/index.rst b/Documentation/admin-guide/index.rst index 43ea35613dfc..fb40a1f6f79e 100644 --- a/Documentation/admin-guide/index.rst +++ b/Documentation/admin-guide/index.rst @@ -119,6 +119,7 @@ configure specific aspects of kernel behavior to your liking. parport perf-security pm/index + pmf pnp rapidio ras diff --git a/Documentation/admin-guide/pmf.rst b/Documentation/admin-guide/pmf.rst new file mode 100644 index 000000000000..9ee729ffc19b --- /dev/null +++ b/Documentation/admin-guide/pmf.rst @@ -0,0 +1,24 @@ +.. SPDX-License-Identifier: GPL-2.0 + +Set udev rules for PMF Smart PC Builder +--------------------------------------- + +AMD PMF(Platform Management Framework) Smart PC Solution builder has to set the system states +like S0i3, Screen lock, hibernate etc, based on the output actions provided by the PMF +TA (Trusted Application). + +In order for this to work the PMF driver generates a uevent for userspace to react to. Below are +sample udev rules that can facilitate this experience when a machine has PMF Smart PC solution builder +enabled. + +Please add the following line(s) to +``/etc/udev/rules.d/99-local.rules``:: + + DRIVERS=="amd-pmf", ACTION=="change", ENV{EVENT_ID}=="0", RUN+="/usr/bin/systemctl suspend" + DRIVERS=="amd-pmf", ACTION=="change", ENV{EVENT_ID}=="1", RUN+="/usr/bin/systemctl hibernate" + DRIVERS=="amd-pmf", ACTION=="change", ENV{EVENT_ID}=="2", RUN+="/bin/loginctl lock-sessions" + +EVENT_ID values: +0= Put the system to S0i3/S2Idle +1= Put the system to hibernate +2= Lock the screen |