[src/trunk]: src/sys/dev/pci support backlight control via wsconsctl

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

details:   https://anonhg.NetBSD.org/src/rev/8dc5fb30f7b2
branches:  trunk
changeset: 757690:8dc5fb30f7b2
user:      macallan <macallan%NetBSD.org@localhost>
date:      Tue Sep 14 02:11:06 2010 +0000

description:
support backlight control via wsconsctl

diffstat:

 sys/dev/pci/r128fb.c |  41 ++++++++++++++++++++++++++++++++---------
 1 files changed, 32 insertions(+), 9 deletions(-)

diffs (85 lines):

diff -r 6c7c2598138c -r 8dc5fb30f7b2 sys/dev/pci/r128fb.c
--- a/sys/dev/pci/r128fb.c      Mon Sep 13 22:37:02 2010 +0000
+++ b/sys/dev/pci/r128fb.c      Tue Sep 14 02:11:06 2010 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: r128fb.c,v 1.11 2010/09/09 01:22:11 macallan Exp $     */
+/*     $NetBSD: r128fb.c,v 1.12 2010/09/14 02:11:06 macallan Exp $     */
 
 /*
  * Copyright (c) 2007 Michael Lorenz
@@ -31,7 +31,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: r128fb.c,v 1.11 2010/09/09 01:22:11 macallan Exp $");
+__KERNEL_RCSID(0, "$NetBSD: r128fb.c,v 1.12 2010/09/14 02:11:06 macallan Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -312,13 +312,6 @@
                (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr);
        }
 
-       aa.console = is_console;
-       aa.scrdata = &sc->sc_screenlist;
-       aa.accessops = &r128fb_accessops;
-       aa.accesscookie = &sc->vd;
-
-       config_found(sc->sc_dev, &aa, wsemuldisplaydevprint);
-
        /* no suspend/resume support yet */
        pmf_device_register(sc->sc_dev, NULL, NULL);
        reg = bus_space_read_4(sc->sc_memt, sc->sc_regh, R128_LVDS_GEN_CNTL);
@@ -331,8 +324,17 @@
                    r128fb_brightness_up, TRUE);
                pmf_event_register(sc->sc_dev, PMFE_DISPLAY_BRIGHTNESS_DOWN,
                    r128fb_brightness_down, TRUE);
+               aprint_verbose("%s: LVDS output is active, enabling backlight"
+                              " control\n", device_xname(self));
        } else
                sc->sc_have_backlight = 0;      
+
+       aa.console = is_console;
+       aa.scrdata = &sc->sc_screenlist;
+       aa.accessops = &r128fb_accessops;
+       aa.accesscookie = &sc->vd;
+
+       config_found(sc->sc_dev, &aa, wsemuldisplaydevprint);
 }
 
 static int
@@ -343,6 +345,7 @@
        struct r128fb_softc *sc = vd->cookie;
        struct wsdisplay_fbinfo *wdf;
        struct vcons_screen *ms = vd->active;
+       struct wsdisplay_param  *param;
 
        switch (cmd) {
 
@@ -392,6 +395,26 @@
                                }
                        }
                        return 0;
+
+       case WSDISPLAYIO_GETPARAM:
+               param = (struct wsdisplay_param *)data;
+               if ((param->param == WSDISPLAYIO_PARAM_BACKLIGHT) &&
+                   (sc->sc_have_backlight != 0)) {
+                       param->min = 0;
+                       param->max = 255;
+                       param->curval = sc->sc_bl_level;
+                       return 0;
+               }
+               return EPASSTHROUGH;
+
+       case WSDISPLAYIO_SETPARAM:
+               param = (struct wsdisplay_param *)data;
+               if ((param->param == WSDISPLAYIO_PARAM_BACKLIGHT) &&
+                   (sc->sc_have_backlight != 0)) {
+                       r128fb_set_backlight(sc, param->curval);
+                       return 0;
+               }
+               return EPASSTHROUGH;
        }
        return EPASSTHROUGH;
 }