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path: root/drivers/gpu/drm/radeon/r100.c
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Diffstat (limited to 'drivers/gpu/drm/radeon/r100.c')
-rw-r--r--drivers/gpu/drm/radeon/r100.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c
index 4e0a80467b4..772bcd86374 100644
--- a/drivers/gpu/drm/radeon/r100.c
+++ b/drivers/gpu/drm/radeon/r100.c
@@ -1589,6 +1589,14 @@ void r100_gpu_init(struct radeon_device *rdev)
r100_hdp_reset(rdev);
}
+void r100_hdp_flush(struct radeon_device *rdev)
+{
+ u32 tmp;
+ tmp = RREG32(RADEON_HOST_PATH_CNTL);
+ tmp |= RADEON_HDP_READ_BUFFER_INVALIDATE;
+ WREG32(RADEON_HOST_PATH_CNTL, tmp);
+}
+
void r100_hdp_reset(struct radeon_device *rdev)
{
uint32_t tmp;