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| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2020-09-04 14:53:49 +0300 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2020-09-17 18:33:22 +0300 |
| commit | 7af655bce275f49b200b552921e55673624943c5 (patch) | |
| tree | 6ea7a896d2a2d7c9844ec6b4fbdd4b1b78356c4b /include/drm | |
| parent | b7feffd584ba15de54ba465a3b32f775c70e1907 (diff) | |
| download | linux-stable-7af655bce275f49b200b552921e55673624943c5.tar.gz linux-stable-7af655bce275f49b200b552921e55673624943c5.tar.bz2 linux-stable-7af655bce275f49b200b552921e55673624943c5.zip | |
drm/dp: Add drm_dp_downstream_mode()
The downstream facing port caps in the DPCD can give us a hint
as to what kind of display mode the sink can use if it doesn't
have an EDID. Use that information to pick a suitable mode.
v2: Use Returns: for kdoc (Lyude)
Add kdocs for drm_display_mode_from_cea_vic() (Lyude)
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200904115354.25336-14-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')
| -rw-r--r-- | include/drm/drm_dp_helper.h | 12 | ||||
| -rw-r--r-- | include/drm/drm_edid.h | 4 |
2 files changed, 16 insertions, 0 deletions
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index 6812a3e0de8d..fbba4a0f7366 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -28,6 +28,8 @@ #include <linux/types.h> #include <drm/drm_connector.h> +struct drm_device; + /* * Unless otherwise noted, all values are from the DP 1.1a spec. Note that * DP and DPCD versions are independent. Differences from 1.0 are not noted, @@ -385,6 +387,13 @@ # define DP_DS_PORT_TYPE_DP_DUALMODE 5 # define DP_DS_PORT_TYPE_WIRELESS 6 # define DP_DS_PORT_HPD (1 << 3) +# define DP_DS_NON_EDID_MASK (0xf << 4) +# define DP_DS_NON_EDID_720x480i_60 (1 << 4) +# define DP_DS_NON_EDID_720x480i_50 (2 << 4) +# define DP_DS_NON_EDID_1920x1080i_60 (3 << 4) +# define DP_DS_NON_EDID_1920x1080i_50 (4 << 4) +# define DP_DS_NON_EDID_1280x720_60 (5 << 4) +# define DP_DS_NON_EDID_1280x720_50 (7 << 4) /* offset 1 for VGA is maximum megapixels per second / 8 */ /* offset 1 for DVI/HDMI is maximum TMDS clock in Mbps / 2.5 */ /* offset 2 for VGA/DVI/HDMI */ @@ -1654,6 +1663,9 @@ int drm_dp_downstream_min_tmds_clock(const u8 dpcd[DP_RECEIVER_CAP_SIZE], int drm_dp_downstream_max_bpc(const u8 dpcd[DP_RECEIVER_CAP_SIZE], const u8 port_cap[4], const struct edid *edid); +struct drm_display_mode *drm_dp_downstream_mode(struct drm_device *dev, + const u8 dpcd[DP_RECEIVER_CAP_SIZE], + const u8 port_cap[4]); 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], diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h index cfa4f5af49af..b27a0e2169c8 100644 --- a/include/drm/drm_edid.h +++ b/include/drm/drm_edid.h @@ -517,4 +517,8 @@ void drm_edid_get_monitor_name(struct edid *edid, char *name, struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev, int hsize, int vsize, int fresh, bool rb); +struct drm_display_mode * +drm_display_mode_from_cea_vic(struct drm_device *dev, + u8 video_code); + #endif /* __DRM_EDID_H__ */ |