diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2020-09-04 13:53:43 +0200 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2020-09-17 16:12:15 +0200 |
| commit | 42f2562ca1b52810415107d919535c552196384e (patch) | |
| tree | 3f6740465dda61e743549a788eaca6727308451e /include/drm/drm_dp_helper.h | |
| parent | drm/dp: Add helpers to identify downstream facing port types (diff) | |
| download | linux-42f2562ca1b52810415107d919535c552196384e.tar.xz linux-42f2562ca1b52810415107d919535c552196384e.zip | |
drm/dp: Pimp drm_dp_downstream_max_bpc()
Deal with more cases in drm_dp_downstream_max_bpc():
- DPCD 1.0 -> assume 8bpc for non-DP
- DPCD 1.1+ DP (or DP++ with DP sink) -> allow anything
- DPCD 1.1+ TMDS -> check the caps, assume 8bpc if the value is crap
- anything else -> assume 8bpc
v2: Use Returns: for kdoc (Lyude)
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200904115354.25336-8-ville.syrjala@linux.intel.com
Reviewed-by: Lyude Paul <lyude@redhat.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'include/drm/drm_dp_helper.h')
| -rw-r--r-- | include/drm/drm_dp_helper.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index 4f946826dfce..6218de1294c1 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -1646,10 +1646,14 @@ bool drm_dp_downstream_is_tmds(const u8 dpcd[DP_RECEIVER_CAP_SIZE], int drm_dp_downstream_max_clock(const u8 dpcd[DP_RECEIVER_CAP_SIZE], const u8 port_cap[4]); int drm_dp_downstream_max_bpc(const u8 dpcd[DP_RECEIVER_CAP_SIZE], - const u8 port_cap[4]); + const u8 port_cap[4], + const struct edid *edid); int drm_dp_downstream_id(struct drm_dp_aux *aux, char id[6]); -void drm_dp_downstream_debug(struct seq_file *m, const u8 dpcd[DP_RECEIVER_CAP_SIZE], - const u8 port_cap[4], struct drm_dp_aux *aux); +void drm_dp_downstream_debug(struct seq_file *m, + const u8 dpcd[DP_RECEIVER_CAP_SIZE], + const u8 port_cap[4], + const struct edid *edid, + struct drm_dp_aux *aux); enum drm_mode_subconnector drm_dp_subconnector_type(const u8 dpcd[DP_RECEIVER_CAP_SIZE], const u8 port_cap[4]); |