[src/trunk]: src/sys/dev/pci support screen blanking of r5xx

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

details:   https://anonhg.NetBSD.org/src/rev/e29443ed519f
branches:  trunk
changeset: 945437:e29443ed519f
user:      macallan <macallan%NetBSD.org@localhost>
date:      Fri Oct 30 15:30:43 2020 +0000

description:
support screen blanking of r5xx
somewhat crude but works

diffstat:

 sys/dev/pci/radeonfb.c |  29 ++++++++++++++++++++++++-----
 1 files changed, 24 insertions(+), 5 deletions(-)

diffs (64 lines):

diff -r 8623e8513ab8 -r e29443ed519f sys/dev/pci/radeonfb.c
--- a/sys/dev/pci/radeonfb.c    Fri Oct 30 15:28:38 2020 +0000
+++ b/sys/dev/pci/radeonfb.c    Fri Oct 30 15:30:43 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: radeonfb.c,v 1.111 2020/10/11 21:41:57 jdc Exp $ */
+/*     $NetBSD: radeonfb.c,v 1.112 2020/10/30 15:30:43 macallan Exp $ */
 
 /*-
  * Copyright (c) 2006 Itronix Inc.
@@ -70,7 +70,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: radeonfb.c,v 1.111 2020/10/11 21:41:57 jdc Exp $");
+__KERNEL_RCSID(0, "$NetBSD: radeonfb.c,v 1.112 2020/10/30 15:30:43 macallan Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -2558,11 +2558,14 @@
        struct radeonfb_softc   *sc = dp->rd_softc;
        uint32_t        reg, mask;
 
-       if (IS_AVIVO(sc)) return 0;
-
        if(!dp->rd_softc->sc_mapped)
                return 1;
 
+       if (IS_AVIVO(sc)) {
+               reg = GET32(sc, AVIVO_D1CRTC_CONTROL);
+               return ((reg & AVIVO_CRTC_EN) == 0);
+       }
+
        if (dp->rd_crtcs[0].rc_number) {
                reg = RADEON_CRTC2_GEN_CNTL;
                mask = RADEON_CRTC2_DISP_DIS;
@@ -2581,11 +2584,27 @@
        uint32_t                fpreg, fpval;
        int                     i;
 
-       if(IS_AVIVO(sc)) return;
 
        if (!sc->sc_mapped)
                return;
 
+       if(IS_AVIVO(sc)) {
+
+               /*
+                * XXX
+                * I don't know how to turn the sunc outputs off for DPMS
+                * power control, so for now just turn the entire CRTC off
+                */
+               if (blank) {
+                       CLR32(sc, AVIVO_D1CRTC_CONTROL, AVIVO_CRTC_EN);
+                       CLR32(sc, AVIVO_D2CRTC_CONTROL, AVIVO_CRTC_EN);
+               } else {
+                       SET32(sc, AVIVO_D1CRTC_CONTROL, AVIVO_CRTC_EN);
+                       SET32(sc, AVIVO_D2CRTC_CONTROL, AVIVO_CRTC_EN);
+               }
+               return;
+       }
+       /* non-AVIVO case */
        for (i = 0; i < dp->rd_ncrtcs; i++) {
 
                if (dp->rd_crtcs[i].rc_number) {