diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2012-06-21 13:19:59 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-08-22 17:39:01 +0200 |
| commit | 44f46b4222a9ba5b21dcdf13f93dc53f48768d2b (patch) | |
| tree | 6b040cfc4603479b595c80b9d7edbca0c0f9abf9 | |
| parent | de9932d13c95c4125d2ed8703f5574fcc108bbcf (diff) | |
drm/i915: Cantiga+ cannot handle a hsync front porch of 0
This addresses WaPruneModeWithIncorrectHsyncOffset.
Bugzilla: http://bugs.freedesktop.org/show_bug.cgi?id=50236
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 42c57581c53f..778cbb88bddc 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -3602,6 +3602,13 @@ static bool intel_crtc_mode_fixup(struct drm_crtc *crtc, if (!(adjusted_mode->private_flags & INTEL_MODE_CRTC_TIMINGS_SET)) drm_mode_set_crtcinfo(adjusted_mode, 0); + /* WaPruneModeWithIncorrectHsyncOffset: Cantiga+ cannot handle modes + * with a hsync front porch of 0. + */ + if ((INTEL_INFO(dev)->gen > 4 || IS_G4X(dev)) && + adjusted_mode->hsync_start == adjusted_mode->hdisplay) + return false; + return true; } |