From: jsg <jsg@openbsd.org>
Date: Fri, 8 Aug 2014 16:35:56 +0000 (+0000)
Subject: drm/radeon/atom: fix dithering on certain panels
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=e6f40492f35401feb49b1d6858af65ecc4dc8d41;p=openbsd

drm/radeon/atom: fix dithering on certain panels

From Alex Deucher
9102ef0d290f01247918f5a519d8fa4a96eaf370 in ubuntu 3.8
642528355c694f5ed68f6bff9ff520326a249f99 in mainline linux
---

diff --git a/sys/dev/pci/drm/radeon/atombios_encoders.c b/sys/dev/pci/drm/radeon/atombios_encoders.c
index 06afa21e7fe..02789d46516 100644
--- a/sys/dev/pci/drm/radeon/atombios_encoders.c
+++ b/sys/dev/pci/drm/radeon/atombios_encoders.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: atombios_encoders.c,v 1.7 2014/04/12 06:05:53 jsg Exp $	*/
+/*	$OpenBSD: atombios_encoders.c,v 1.8 2014/08/08 16:35:56 jsg Exp $	*/
 /*
  * Copyright 2007-11 Advanced Micro Devices, Inc.
  * Copyright 2008 Red Hat Inc.
@@ -1876,8 +1876,11 @@ atombios_set_encoder_crtc_source(struct drm_encoder *encoder)
 					args.v2.ucEncodeMode = ATOM_ENCODER_MODE_CRT;
 				else
 					args.v2.ucEncodeMode = atombios_get_encoder_mode(encoder);
-			} else
+			} else if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
+				args.v2.ucEncodeMode = ATOM_ENCODER_MODE_LVDS;
+			} else {
 				args.v2.ucEncodeMode = atombios_get_encoder_mode(encoder);
+			}
 			switch (radeon_encoder->encoder_id) {
 			case ENCODER_OBJECT_ID_INTERNAL_UNIPHY:
 			case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1: