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.dee...@intel.com>
---
drivers/gpu/drm/i915/i915_reg.h | 2 ++
drivers/gpu/drm/i915/intel_dsi.c | 17 +++++++++++++----
2 files changed, 15 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index bdc7b35..7a79dd1 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -8350,6 +8350,8 @@ enum {
#define _MIPIA_CTRL (dev_priv->mipi_mmio_base + 0xb104)
#define _MIPIC_CTRL (dev_priv->mipi_mmio_base + 0xb904)
#define MIPI_CTRL(port) _MMIO_MIPI(port, _MIPIA_CTRL,
_MIPIC_CTRL)
+#define BXT_PIXEL_OVERLAP_CNT_MASK (0xf << 10)
+#define BXT_PIXEL_OVERLAP_CNT_SHIFT 10
#define ESCAPE_CLOCK_DIVIDER_SHIFT 5 /* A only */
#define ESCAPE_CLOCK_DIVIDER_MASK (3 << 5)
#define ESCAPE_CLOCK_DIVIDER_1 (0 << 5)
diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index 4e0d025..b1a4675 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -455,12 +455,21 @@ 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_BROXTON(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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