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| author | Lyude Paul <lyude@redhat.com> | 2020-08-26 21:24:51 +0300 |
|---|---|---|
| committer | Lyude Paul <lyude@redhat.com> | 2020-09-01 02:10:08 +0300 |
| commit | 693c3ec5976eb4b66cbd4f3f1c701a6f0ae1c9b9 (patch) | |
| tree | 2accf554bc539eace05e11121fcd1c580c1a43c3 /include/drm/drm_dp_helper.h | |
| parent | 409d38139b42f2c3d3e6012a060c498fbb5067fc (diff) | |
| download | linux-693c3ec5976eb4b66cbd4f3f1c701a6f0ae1c9b9.tar.xz | |
drm/i915/dp: Extract drm_dp_read_sink_count_cap()
Since other drivers are also going to need to be aware of the sink count
in order to do proper dongle detection, we might as well steal i915's
DP_SINK_COUNT helpers and move them into DRM helpers so that other
dirvers can use them as well.
Note that this also starts using intel_dp_has_sink_count() in
intel_dp_detect_dpcd(), which is a functional change.
v5:
* Change name from drm_dp_has_sink_count() to
drm_dp_read_sink_count_cap()
Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Sean Paul <sean@poorly.run>
Link: https://patchwork.freedesktop.org/patch/msgid/20200826182456.322681-16-lyude@redhat.com
Diffstat (limited to 'include/drm/drm_dp_helper.h')
| -rw-r--r-- | include/drm/drm_dp_helper.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index b8716b200666..4c56ce4dc54f 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -1631,6 +1631,11 @@ void drm_dp_set_subconnector_property(struct drm_connector *connector, const u8 *dpcd, const u8 port_cap[4]); +struct drm_dp_desc; +bool drm_dp_read_sink_count_cap(struct drm_connector *connector, + const u8 dpcd[DP_RECEIVER_CAP_SIZE], + const struct drm_dp_desc *desc); + void drm_dp_remote_aux_init(struct drm_dp_aux *aux); void drm_dp_aux_init(struct drm_dp_aux *aux); int drm_dp_aux_register(struct drm_dp_aux *aux); @@ -1689,7 +1694,8 @@ enum drm_dp_quirk { * @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. + * The driver should ignore SINK_COUNT during detection. Note that + * drm_dp_read_sink_count_cap() automatically checks for this quirk. */ DP_DPCD_QUIRK_NO_SINK_COUNT, /** |