From: Alex Deucher <alexander.deucher@amd.com>
Date: Thu, 24 Jan 2013 20:00:17 +0000 (-0500)
Subject: drm/radeon: don't reset the MC on IGPs/APUs
X-Git-Tag: next-20130218~64^2~15^2~8
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=24178ec42b0985d485886bc43b97e54ff173627e;p=karo-tx-linux.git

drm/radeon: don't reset the MC on IGPs/APUs

The MC isn't part of the GPU per se.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 045955d5f337..2916de896a60 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -2500,8 +2500,10 @@ static void evergreen_gpu_soft_reset(struct radeon_device *rdev, u32 reset_mask)
 	if (reset_mask & RADEON_RESET_VMC)
 		srbm_soft_reset |= SOFT_RESET_VMC;
 
-	if (reset_mask & RADEON_RESET_MC)
-		srbm_soft_reset |= SOFT_RESET_MC;
+	if (!(rdev->flags & RADEON_IS_IGP)) {
+		if (reset_mask & RADEON_RESET_MC)
+			srbm_soft_reset |= SOFT_RESET_MC;
+	}
 
 	if (grbm_soft_reset) {
 		tmp = RREG32(GRBM_SOFT_RESET);
diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
index b6e80550ed90..170bd03d4dd8 100644
--- a/drivers/gpu/drm/radeon/ni.c
+++ b/drivers/gpu/drm/radeon/ni.c
@@ -1474,8 +1474,10 @@ static void cayman_gpu_soft_reset(struct radeon_device *rdev, u32 reset_mask)
 	if (reset_mask & RADEON_RESET_VMC)
 		srbm_soft_reset |= SOFT_RESET_VMC;
 
-	if (reset_mask & RADEON_RESET_MC)
-		srbm_soft_reset |= SOFT_RESET_MC;
+	if (!(rdev->flags & RADEON_IS_IGP)) {
+		if (reset_mask & RADEON_RESET_MC)
+			srbm_soft_reset |= SOFT_RESET_MC;
+	}
 
 	if (grbm_soft_reset) {
 		tmp = RREG32(GRBM_SOFT_RESET);
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 3f292765aea8..dbcb0752f083 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -1475,8 +1475,10 @@ static void r600_gpu_soft_reset(struct radeon_device *rdev, u32 reset_mask)
 	if (reset_mask & RADEON_RESET_GRBM)
 		srbm_soft_reset |= S_000E60_SOFT_RESET_GRBM(1);
 
-	if (reset_mask & RADEON_RESET_MC)
-		srbm_soft_reset |= S_000E60_SOFT_RESET_MC(1);
+	if (!(rdev->flags & RADEON_IS_IGP)) {
+		if (reset_mask & RADEON_RESET_MC)
+			srbm_soft_reset |= S_000E60_SOFT_RESET_MC(1);
+	}
 
 	if (reset_mask & RADEON_RESET_VMC)
 		srbm_soft_reset |= S_000E60_SOFT_RESET_VMC(1);