Lines Matching +full:video +full:- +full:firmware
1 .. SPDX-License-Identifier: GPL-2.0
4 ACPI video extensions
10 defining the video POST device, retrieving EDID information or to
11 setup a video output, etc. Note that this is an ref. implementation
12 only. It may or may not work for your integrated video device.
14 The ACPI video driver does 3 things regarding backlight control.
19 If the ACPI table has a video device, and acpi_backlight=vendor kernel
26 Documentation/ABI/stable/sysfs-class-backlight.
28 And what ACPI video driver does is:
32 get the brightness level the firmware thinks it is at;
40 firmware
42 Note that ACPI video backlight driver will always use index for
88 For this case, ACPI video driver does not need to do anything(actually,
92 scancode, instead, firmware will notify the video device ACPI node
94 video driver will generate an key type input event according to the
117 space regardless of whether or not the video module controls the backlight level
119 module parameter as documented in admin-guide/kernel-parameters.rst. It is