<def f='src/src/sys/dev/acpi/acpi_display.c' l='265' ll='269'/>
<size>16</size>
<doc f='src/src/sys/dev/acpi/acpi_display.c' l='251'>/*
 * acpidisp_brctl:
 *
 *	Brightness control (ACPI 4.0a, Sec. B.6.2 to B.6.4).  This structure
 *	contains the supported brightness levels (_BCL package) and the current
 *	level.  Following Windows 7 brightness control, we ignore the fullpower
 *	and battery levels (as it simplifies the code).
 *
 *	The array bc_level is sorted in strictly ascending order.
 *
 * Invariants (after initialization):
 *
 *	(bc_level != NULL) &amp;&amp; (bc_level_count &gt; 0)
 */</doc>
