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| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2019-05-28 17:06:49 +0300 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2019-06-14 19:11:10 +0300 |
| commit | 7974033e527a5dd12d96126d09d4cff4f9b65c69 (patch) | |
| tree | e6a2bf9b71babd60b68e24b4cf2eb1a81f8fbf27 /include/drm/drm_dp_helper.h | |
| parent | 41ff5bd834356a310ad909152f19bf23963527ce (diff) | |
| download | lwn-7974033e527a5dd12d96126d09d4cff4f9b65c69.tar.gz lwn-7974033e527a5dd12d96126d09d4cff4f9b65c69.zip | |
drm/dp: Add DP_DPCD_QUIRK_NO_SINK_COUNT
CH7511 eDP->LVDS bridge doesn't seem to set SINK_COUNT properly
causing i915 to detect it as disconnected. Add a quirk to ignore
SINK_COUNT on these devices.
Cc: David S. <david@majinbuu.com>
Cc: Peteris Rudzusiks <peteris.rudzusiks@gmail.com>
Tested-by: Peteris Rudzusiks <peteris.rudzusiks@gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105406
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190528140650.19230-1-ville.syrjala@linux.intel.com
Acked-by: Jani Nikula <jani.nikula@intel.com> #irc
Diffstat (limited to 'include/drm/drm_dp_helper.h')
| -rw-r--r-- | include/drm/drm_dp_helper.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index 3fc534ee8174..7e52eb81284a 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -1414,6 +1414,13 @@ enum drm_dp_quirk { * driver still need to implement proper handling for such device. */ DP_DPCD_QUIRK_NO_PSR, + /** + * @DP_DPCD_QUIRK_NO_SINK_COUNT: + * + * The device does not set SINK_COUNT to a non-zero value. + * The driver should ignore SINK_COUNT during detection. + */ + DP_DPCD_QUIRK_NO_SINK_COUNT, }; /** |