3.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Alex Deucher <alexander.deuc...@amd.com>

commit 7c1c7c18fc752b2a1d07597286467ef186312463 upstream.

A new tiling config register for the display blocks was
added on DCE6.

May fix:
https://bugs.freedesktop.org/show_bug.cgi?id=62889
https://bugs.freedesktop.org/show_bug.cgi?id=57919

Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/gpu/drm/radeon/ni.c  |    2 ++
 drivers/gpu/drm/radeon/nid.h |    4 ++++
 drivers/gpu/drm/radeon/si.c  |    1 +
 drivers/gpu/drm/radeon/sid.h |    2 ++
 4 files changed, 9 insertions(+)

--- a/drivers/gpu/drm/radeon/ni.c
+++ b/drivers/gpu/drm/radeon/ni.c
@@ -621,6 +621,8 @@ static void cayman_gpu_init(struct radeo
 
        WREG32(GB_ADDR_CONFIG, gb_addr_config);
        WREG32(DMIF_ADDR_CONFIG, gb_addr_config);
+       if (ASIC_IS_DCE6(rdev))
+               WREG32(DMIF_ADDR_CALC, gb_addr_config);
        WREG32(HDP_ADDR_CONFIG, gb_addr_config);
        WREG32(DMA_TILING_CONFIG + DMA0_REGISTER_OFFSET, gb_addr_config);
        WREG32(DMA_TILING_CONFIG + DMA1_REGISTER_OFFSET, gb_addr_config);
--- a/drivers/gpu/drm/radeon/nid.h
+++ b/drivers/gpu/drm/radeon/nid.h
@@ -45,6 +45,10 @@
 #define ARUBA_GB_ADDR_CONFIG_GOLDEN        0x12010001
 
 #define DMIF_ADDR_CONFIG                               0xBD4
+
+/* DCE6 only */
+#define DMIF_ADDR_CALC                                 0xC00
+
 #define        SRBM_GFX_CNTL                                   0x0E44
 #define                RINGID(x)                                       (((x) & 
0x3) << 0)
 #define                VMID(x)                                         (((x) & 
0x7) << 0)
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -1765,6 +1765,7 @@ static void si_gpu_init(struct radeon_de
 
        WREG32(GB_ADDR_CONFIG, gb_addr_config);
        WREG32(DMIF_ADDR_CONFIG, gb_addr_config);
+       WREG32(DMIF_ADDR_CALC, gb_addr_config);
        WREG32(HDP_ADDR_CONFIG, gb_addr_config);
        WREG32(DMA_TILING_CONFIG + DMA0_REGISTER_OFFSET, gb_addr_config);
        WREG32(DMA_TILING_CONFIG + DMA1_REGISTER_OFFSET, gb_addr_config);
--- a/drivers/gpu/drm/radeon/sid.h
+++ b/drivers/gpu/drm/radeon/sid.h
@@ -65,6 +65,8 @@
 
 #define DMIF_ADDR_CONFIG                               0xBD4
 
+#define DMIF_ADDR_CALC                                 0xC00
+
 #define        SRBM_STATUS                                     0xE50
 #define                GRBM_RQ_PENDING                         (1 << 5)
 #define                VMC_BUSY                                (1 << 8)


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