Messages in this thread Patch in this message | | | From | Randy Dunlap <> | Subject | [PATCH] ACPI; update docs for "acpi_backlight" kernel parameter options | Date | Mon, 30 Mar 2020 17:17:37 -0700 |
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From: Randy Dunlap <rdunlap@infradead.org>
Update the Documentation for "acpi_backlight" by adding 2 new options (native and none).
Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: linux-acpi@vger.kernel.org Cc: Zhang Rui <rui.zhang@intel.com> Cc: Hans de Goede <hdegoede@redhat.com> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Len Brown <lenb@kernel.org> --- Documentation/admin-guide/kernel-parameters.txt | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)
--- linux-next-20200330.orig/Documentation/admin-guide/kernel-parameters.txt +++ linux-next-20200330/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
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