drm/i915: set the DDI sync polarity bits
During my tests, everything worked even if the wrong polarity was set.
Still, we should try to set the correct values.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 97f00fb..896b279 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -4312,6 +4312,8 @@
#define PIPE_DDI_BPC_10 (1<<20)
#define PIPE_DDI_BPC_6 (2<<20)
#define PIPE_DDI_BPC_12 (3<<20)
+#define PIPE_DDI_PVSYNC (1<<17)
+#define PIPE_DDI_PHSYNC (1<<16)
#define PIPE_DDI_BFI_ENABLE (1<<4)
#define PIPE_DDI_PORT_WIDTH_X1 (0<<1)
#define PIPE_DDI_PORT_WIDTH_X2 (1<<1)
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 0d7acd7..1fbd67c 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -727,6 +727,7 @@
temp &= ~PIPE_DDI_PORT_MASK;
temp &= ~PIPE_DDI_BPC_12;
temp &= ~PIPE_DDI_MODE_SELECT_MASK;
+ temp &= ~(PIPE_DDI_PVSYNC | PIPE_DDI_PHSYNC);
temp |= PIPE_DDI_SELECT_PORT(port) |
((intel_crtc->bpp > 24) ?
PIPE_DDI_BPC_12 :
@@ -738,6 +739,11 @@
else
temp |= PIPE_DDI_MODE_SELECT_DVI;
+ if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
+ temp |= PIPE_DDI_PVSYNC;
+ if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
+ temp |= PIPE_DDI_PHSYNC;
+
I915_WRITE(DDI_FUNC_CTL(pipe), temp);
intel_hdmi->set_infoframes(encoder, adjusted_mode);