From 8208441be21eb3df448e171c4e5cf92756f287da Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexdeucher@gmail.com>
Date: Fri, 1 Jul 2011 13:18:28 -0400
Subject: [PATCH] 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>
---
drivers/gpu/drm/radeon/evergreen.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 12d2fdc524144..e8a5ffb0124d2 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) {