Lines Matching +full:user +full:- +full:level

1 .. SPDX-License-Identifier: GPL-2.0
16 Export a sysfs interface for user space to control backlight level
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
74 Notify user space about hotkey event
79 i) For some laptops, when user presses the hotkey, a scancode will be
80    generated and sent to user space through the input device created by
82    following key code will appear to user space::
95     notify value it received and send the event to user space through the
108 Once user space tool receives this event, it can modify the backlight
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
116 not affect the sending of event to user space, they are always sent to user
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.