Lines Matching +full:video +full:- +full:interface

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.
16 Export a sysfs interface for user space to control backlight level
19 If the ACPI table has a video device, and acpi_backlight=vendor kernel
22 interface control. For every registered class device, there will be a
25 The backlight sysfs interface has a standard definition here:
26 Documentation/ABI/stable/sysfs-class-backlight.
28 And what ACPI video driver does is:
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
109 level through the sysfs interface.
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