From 758376e6eb2155605ad502d0dc5147c74f3c47a6 Mon Sep 17 00:00:00 2001
From: Dave Airlie <airlied@redhat.com>
Date: Mon, 10 Nov 2008 15:25:12 +1000
Subject: radeon: disable HDP read cache for now

---
 shared-core/radeon_cp.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'shared-core/radeon_cp.c')

diff --git a/shared-core/radeon_cp.c b/shared-core/radeon_cp.c
index 73192d03..a087829e 100644
--- a/shared-core/radeon_cp.c
+++ b/shared-core/radeon_cp.c
@@ -2519,6 +2519,9 @@ int radeon_modeset_cp_init(struct drm_device *dev)
 
 	r300_init_reg_flags(dev);
 
+	/* turn off HDP read cache for now */
+	RADEON_WRITE(RADEON_HOST_PATH_CNTL, RADEON_READ(RADEON_HOST_PATH_CNTL) | RADEON_HP_LIN_RD_CACHE_DIS);
+	      
 #if __OS_HAS_AGP
 	if (dev_priv->flags & RADEON_IS_AGP)
 		radeon_modeset_agp_init(dev);
-- 
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