diff options
| author | Imre Deak <imre.deak@intel.com> | 2016-10-24 19:33:24 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-10-25 09:53:44 +0300 |
| commit | 714cf7ea505502186de0e87e9f029a4c46f03631 (patch) | |
| tree | d39c662df71a0c91f4502922b25387932d118e13 /include/drm/drm_dp_helper.h | |
| parent | 14544d0937bf0160018a47ba74fff7fd61c22731 (diff) | |
| download | linux-714cf7ea505502186de0e87e9f029a4c46f03631.tar.xz | |
drm/dp: Factor out helper to distinguish between branch and sink devices
This check is open-coded in a few places, so it makes sense to simplify
things by having a helper for it similar to the rest of DPCD feature
helpers.
v2: (Jani)
- Move the helper to drm_dp_helper.h.
- Split out this change to a separate patch.
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1477326811-30431-2-git-send-email-imre.deak@intel.com
Diffstat (limited to 'include/drm/drm_dp_helper.h')
| -rw-r--r-- | include/drm/drm_dp_helper.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index 2a79882cb68e..55bbeb0ff594 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -690,6 +690,12 @@ drm_dp_tps3_supported(const u8 dpcd[DP_RECEIVER_CAP_SIZE]) dpcd[DP_MAX_LANE_COUNT] & DP_TPS3_SUPPORTED; } +static inline bool +drm_dp_is_branch(const u8 dpcd[DP_RECEIVER_CAP_SIZE]) +{ + return dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT; +} + /* * DisplayPort AUX channel */ |