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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>
hifive-unleashed-5.1
Paulo Zanoni 2012-08-08 14:15:28 -03:00 committed by Daniel Vetter
parent 3f7c447faa
commit f63eb7c452
2 changed files with 8 additions and 0 deletions
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2
drivers/gpu/drm/i915/i915_reg.h
View File

@ -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)

6
drivers/gpu/drm/i915/intel_ddi.c
View File

@ -727,6 +727,7 @@ void intel_ddi_mode_set(struct drm_encoder *encoder,
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 @@ void intel_ddi_mode_set(struct drm_encoder *encoder,
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);