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| author | Randy Dunlap <rdunlap@infradead.org> | 2020-03-30 17:17:37 -0700 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2020-04-01 11:15:55 +0200 |
| commit | 5fd769c2bf115c23670acbc54875717b177c7e0e (patch) | |
| tree | 2ea566da522b801d58314b553eacf628cdaed781 /Documentation/admin-guide/kernel-parameters.txt | |
| parent | 2ce94bc4e056d3e48291aac87a95ebd2a86348ba (diff) | |
| download | lwn-5fd769c2bf115c23670acbc54875717b177c7e0e.tar.gz lwn-5fd769c2bf115c23670acbc54875717b177c7e0e.zip | |
ACPI: video: Docs update for "acpi_backlight" kernel parameter options
Update the Documentation for "acpi_backlight" by adding 2 new
options (native and none).
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'Documentation/admin-guide/kernel-parameters.txt')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 4e3885e38179..457ca22bfc4b 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -22,11 +22,13 @@ default: 0 acpi_backlight= [HW,ACPI] - acpi_backlight=vendor - acpi_backlight=video - If set to vendor, prefer vendor specific driver + { vendor | video | native | none } + If set to vendor, prefer vendor-specific driver (e.g. thinkpad_acpi, sony_acpi, etc.) instead of the ACPI video.ko driver. + If set to video, use the ACPI video.ko driver. + If set to native, use the device's native backlight mode. + If set to none, disable the ACPI backlight interface. acpi_force_32bit_fadt_addr force FADT to use 32 bit addresses rather than the |