From: Jerome Glisse <jglisse@redhat.com>
Date: Thu, 31 May 2012 23:00:24 +0000 (-0400)
Subject: drm/radeon: fix HD6790, HD6570 backend programming
X-Git-Tag: v3.2.20~38
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=f0efda52fb8bffd27c789732d79042c04fc90850;p=karo-tx-linux.git

drm/radeon: fix HD6790, HD6570 backend programming

commit 95c4b23ec4e2fa5604df229ddf134e31d7b3b378 upstream.

Without this bit sets we get broken rendering and
lockups.

fglrx sets this bit.

Bugs that should be fixed by this patch :
https://bugs.freedesktop.org/show_bug.cgi?id=49792
https://bugzilla.kernel.org/show_bug.cgi?id=43207
https://bugs.freedesktop.org/show_bug.cgi?id=39282

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 7777c2fa43b2..dac178be0909 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -2116,9 +2116,9 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
 		WREG32(CC_SYS_RB_BACKEND_DISABLE, rb);
 		WREG32(GC_USER_RB_BACKEND_DISABLE, rb);
 		WREG32(CC_GC_SHADER_PIPE_CONFIG, sp);
-        }
+	}
 
-	grbm_gfx_index |= SE_BROADCAST_WRITES;
+	grbm_gfx_index = INSTANCE_BROADCAST_WRITES | SE_BROADCAST_WRITES;
 	WREG32(GRBM_GFX_INDEX, grbm_gfx_index);
 	WREG32(RLC_GFX_INDEX, grbm_gfx_index);