From: Deepak M <m.deepak@xxxxxxxxx>
Dual link Z-inversion overlap field is present
in MIPI_CTRL register unlike the older platforms,
hence setting the same in this patch.
Signed-off-by: Deepak M <m.deepak@xxxxxxxxx>
Signed-off-by: Madhav Chauhan <madhav.chauhan@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_dsi.c | 17 +++++++++++++----
1 file changed, 13 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index 0def214..bd2d180 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -561,12 +561,21 @@ static void intel_dsi_port_enable(struct intel_encoder *encoder)
if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) {
u32 temp;
-
- temp = I915_READ(VLV_CHICKEN_3);
- temp &= ~PIXEL_OVERLAP_CNT_MASK |
+ if (IS_GEN9_LP(dev_priv)) {
+ for_each_dsi_port(port, intel_dsi->ports) {
+ temp = I915_READ(MIPI_CTRL(port));
+ temp &= ~BXT_PIXEL_OVERLAP_CNT_MASK |
+ intel_dsi->pixel_overlap <<
+ BXT_PIXEL_OVERLAP_CNT_SHIFT;
+ I915_WRITE(MIPI_CTRL(port), temp);
+ }
+ } else {
+ temp = I915_READ(VLV_CHICKEN_3);
+ temp &= ~PIXEL_OVERLAP_CNT_MASK |
intel_dsi->pixel_overlap <<
PIXEL_OVERLAP_CNT_SHIFT;
- I915_WRITE(VLV_CHICKEN_3, temp);
+ I915_WRITE(VLV_CHICKEN_3, temp);
+ }
}
for_each_dsi_port(port, intel_dsi->ports) {
--
1.9.1
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