diff options
| author | Adam Jackson <ajax@redhat.com> | 2010-04-06 01:57:59 +0400 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2010-04-12 20:23:47 +0400 |
| commit | 9c9e792795f96d201d85188607261f9f8bbf3219 (patch) | |
| tree | abe0fb9928322bc0115b15da8b7584ef909525cb /drivers/gpu/drm | |
| parent | ab00a9ef8d4ce7de4d5b15cbf4101feeb8cf7f4d (diff) | |
| download | linux-9c9e792795f96d201d85188607261f9f8bbf3219.tar.xz | |
drm/i915: Set sync polarity correctly on DisplayPort
Probably only matters for format-converting dongles, but might as well
get it right all the time.
Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index fee54169493b..79625bd9361a 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -638,9 +638,12 @@ intel_dp_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode, struct intel_crtc *intel_crtc = to_intel_crtc(crtc); dp_priv->DP = (DP_VOLTAGE_0_4 | - DP_PRE_EMPHASIS_0 | - DP_SYNC_VS_HIGH | - DP_SYNC_HS_HIGH); + DP_PRE_EMPHASIS_0); + + if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) + dp_priv->DP |= DP_SYNC_HS_HIGH; + if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) + dp_priv->DP |= DP_SYNC_VS_HIGH; if (HAS_PCH_CPT(dev) && !IS_eDP(intel_encoder)) dp_priv->DP |= DP_LINK_TRAIN_OFF_CPT; |