[src/trunk]: src/sys/dev/acpi Add comments.

[mlelstv <mlelstv%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/e67e408d87a4
branches:  trunk
changeset: 814672:e67e408d87a4
user:      mlelstv <mlelstv%NetBSD.org@localhost>
date:      Sun Apr 03 10:32:47 2016 +0000

description:
Add comments.

diffstat:

 sys/dev/acpi/acpi_display.c |  11 +++++++++--
 1 files changed, 9 insertions(+), 2 deletions(-)

diffs (50 lines):

diff -r b7ca565c5844 -r e67e408d87a4 sys/dev/acpi/acpi_display.c
--- a/sys/dev/acpi/acpi_display.c       Sun Apr 03 10:32:00 2016 +0000
+++ b/sys/dev/acpi/acpi_display.c       Sun Apr 03 10:32:47 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: acpi_display.c,v 1.14 2016/02/18 15:42:44 riastradh Exp $      */
+/*     $NetBSD: acpi_display.c,v 1.15 2016/04/03 10:32:47 mlelstv Exp $        */
 
 /*-
  * Copyright (c) 2010 The NetBSD Foundation, Inc.
@@ -66,7 +66,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: acpi_display.c,v 1.14 2016/02/18 15:42:44 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: acpi_display.c,v 1.15 2016/04/03 10:32:47 mlelstv Exp $");
 
 #include <sys/param.h>
 #include <sys/device.h>
@@ -785,24 +785,31 @@
 
        cap = 0;
 
+       /* List of Brigthness levels */
        if (acpidisp_has_method(ad->ad_handle, "_BCL", ACPI_TYPE_PACKAGE))
                cap |= ACPI_DISP_OUT_CAP__BCL;
 
+       /* Set brightness level */
        if (acpidisp_has_method(ad->ad_handle, "_BCM", ACPI_TYPE_METHOD))
                cap |= ACPI_DISP_OUT_CAP__BCM;
 
+       /* Get brightless level */
        if (acpidisp_has_method(ad->ad_handle, "_BQC", ACPI_TYPE_INTEGER))
                cap |= ACPI_DISP_OUT_CAP__BQC;
 
+       /* Return EDID */
        if (acpidisp_has_method(ad->ad_handle, "_DDC", ACPI_TYPE_METHOD))
                cap |= ACPI_DISP_OUT_CAP__DDC;
 
+       /* Get Status */
        if (acpidisp_has_method(ad->ad_handle, "_DCS", ACPI_TYPE_INTEGER))
                cap |= ACPI_DISP_OUT_CAP__DCS;
 
+       /* Get Graphics State */
        if (acpidisp_has_method(ad->ad_handle, "_DGS", ACPI_TYPE_INTEGER))
                cap |= ACPI_DISP_OUT_CAP__DGS;
 
+       /* Set Graphics State */
        if (acpidisp_has_method(ad->ad_handle, "_DSS", ACPI_TYPE_METHOD))
                cap |= ACPI_DISP_OUT_CAP__DSS;