From: Alex Deucher <alexdeucher@gmail.com>
Date: Fri, 1 Jul 2011 17:18:28 +0000 (-0400)
Subject: drm/radeon/kms: use correct reg on fusion when reading back mem config
X-Git-Tag: v3.0-rc6~10^2~2
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=8208441be21eb3df448e171c4e5cf92756f287da;p=linux.git

drm/radeon/kms: use correct reg on fusion when reading back mem config

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
---

diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 12d2fdc52414..e8a5ffb0124d 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -2248,7 +2248,10 @@ int evergreen_mc_init(struct radeon_device *rdev)
 
 	/* Get VRAM informations */
 	rdev->mc.vram_is_ddr = true;
-	tmp = RREG32(MC_ARB_RAMCFG);
+	if (rdev->flags & RADEON_IS_IGP)
+		tmp = RREG32(FUS_MC_ARB_RAMCFG);
+	else
+		tmp = RREG32(MC_ARB_RAMCFG);
 	if (tmp & CHANSIZE_OVERRIDE) {
 		chansize = 16;
 	} else if (tmp & CHANSIZE_MASK) {