Lines Matching +full:device +full:- +full:level

1 .. SPDX-License-Identifier: GPL-2.0
10 defining the video POST device, retrieving EDID information or to
12 only.  It may or may not work for your integrated video device.
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
20 command line is not present, the driver will register a backlight device
22 interface control. For every registered class device, there will be a
26 Documentation/ABI/stable/sysfs-class-backlight.
32   get the brightness level the firmware thinks it is at;
36   on write, control method _BCM will run to set the requested brightness level;
70 as a "brightness level" indicator. Thus from the user space perspective
80    generated and sent to user space through the input device created by
92     scancode, instead, firmware will notify the video device ACPI node
96     input device it created:
109 level through the sysfs interface.
111 Change backlight level in the kernel
115 received a notification, it will set the backlight level accordingly. This does
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
121 wants to have full control of the backlight level.