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| author | Shaposhnikov Daniil <2minesweeper2@gmail.com> | 2026-05-25 18:00:57 +0500 |
|---|---|---|
| committer | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2026-07-09 16:43:36 +0300 |
| commit | e8e52a2b543758399f5a874535c01807436a6f4c (patch) | |
| tree | 454123b9f2c9c4a25424e009cfd94a5f31f93884 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 1b257f94de20efcc1f5de6208104d4e1f2651823 (diff) | |
platform/x86: huawei-wmi: add ACPI fallback for Fn-lock on newer models
Newer Huawei laptops (e.g. FLMH-XX / MateBook 14 2024) no longer support
the legacy WMI interface for Fn-lock control. Instead, they expose direct
ACPI methods \GFRS and \SFRS (Get/Set Fn key Reversal Status) which
communicate with the EC via registers 0x6B (read) and 0x6C (write).
Add huawei_acpi_fn_lock_get() and huawei_acpi_fn_lock_set() helpers that
use acpi_evaluate_object() to call these methods. Both
huawei_wmi_fn_lock_get() and huawei_wmi_fn_lock_set() now probe for
\GFRS/\SFRS via acpi_has_method() first and fall back to the legacy WMI
path if not present.
Tested on: HUAWEI FLMH-XX (MateBook 14 2024),
CachyOS (kernel 7.0.9-1-cachyos).
Signed-off-by: Shaposhnikov Daniil <2minesweeper2@gmail.com>
Link: https://patch.msgid.link/20260525130058.7408-2-2minesweeper2@gmail.com
[ij: removed a few blank lines and "legacy"s from comments]
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions