diff options
| author |   Abdiel Janulgue <abdiel.janulgue@linux.intel.com> | 2017-12-15 12:20:55 +0200 |
|---|---|---|
| committer |   Jani Nikula <jani.nikula@intel.com> | 2018-01-19 12:31:33 +0200 |
| commit | 3019062905533ccd71b535f6e5c3ed7e9bb195e0 (patch) | |
| tree | 1c5e34cfcc8933b3ad9a17ffee52b0398d57388b /drivers/gpu/drm/i915/intel_hdmi.c | |
| parent | drm/i915: remove redundant ELD connector type update (diff) | |
| download | linux-dev-3019062905533ccd71b535f6e5c3ed7e9bb195e0.tar.xz linux-dev-3019062905533ccd71b535f6e5c3ed7e9bb195e0.zip | |
drm/i915: Ignore TMDS clock limit for DP++ when EDID override is set
4K modes testing by using dummy EDID data has never been working
properly on boxes with DP++ (dual-mode) adaptors. The reason for
this is that those modes got pruned during hdmi mode validation.
intel_hdmi_mode_valid returns CLOCK_HIGH because the pixel clock
reported by the 4k mode is higher than dual port TMDS clock limit.
However 4k injection does work properly on machines that don't have
DP++ adapters because the mode is never validated against the DP++
TMDS clock limit.
v2: Don't detect the DP++ limits when we're testing using overridden
EDIDs. Make sure to check for the override condition after
respecting the value of drm_dp_dual_mode_detect (Jani Nikula).
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101649
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171215102055.11729-1-abdiel.janulgue@linux.intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_hdmi.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_hdmi.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c index 179d0ad3889d..93e97f9e1aac 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -1567,7 +1567,10 @@ intel_hdmi_dp_dual_mode_detect(struct drm_connector *connector, bool has_edid) * there's nothing connected to the port. */ if (type == DRM_DP_DUAL_MODE_UNKNOWN) { - if (has_edid && + /* An overridden EDID imply that we want this port for testing. + * Make sure not to set limits for that port. + */ + if (has_edid && !connector->override_edid && intel_bios_is_port_dp_dual_mode(dev_priv, port)) { DRM_DEBUG_KMS("Assuming DP dual mode adaptor presence based on VBT\n"); type = DRM_DP_DUAL_MODE_TYPE1_DVI; |