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| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2020-02-26 14:24:23 +0300 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2020-02-26 14:31:19 +0300 |
| commit | a92d083d08b008d0507f1191c3610b3e185309eb (patch) | |
| tree | d6cb82409b8eb601df3ef01679daeab52178376e | |
| parent | b35f90f2d4a63cf2bc427f5c4e33eb86d963e716 (diff) | |
| download | linux-a92d083d08b008d0507f1191c3610b3e185309eb.tar.xz | |
drm/edid: Add flag to drm_display_info to identify HDMI sinks
The drm_display_info structure contains many fields related to HDMI
sinks, but none that identifies if a sink compliant with CEA-861 (EDID)
shall be treated as an HDMI sink or a DVI sink. Add such a flag, and
populate it according to section 8.3.3 ("DVI/HDMI Device
Discrimination") of the HDMI v1.3 specification.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Tested-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200226112514.12455-4-laurent.pinchart@ideasonboard.com
| -rw-r--r-- | Documentation/gpu/todo.rst | 14 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_edid.c | 6 | ||||
| -rw-r--r-- | include/drm/drm_connector.h | 8 |
3 files changed, 28 insertions, 0 deletions
diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst index 370ac678106e..ccf5e8e34222 100644 --- a/Documentation/gpu/todo.rst +++ b/Documentation/gpu/todo.rst @@ -407,6 +407,20 @@ Contact: Daniel Vetter Level: Intermediate +Replace drm_detect_hdmi_monitor() with drm_display_info.is_hdmi +--------------------------------------------------------------- + +Once EDID is parsed, the monitor HDMI support information is available through +drm_display_info.is_hdmi. Many drivers still call drm_detect_hdmi_monitor() to +retrieve the same information, which is less efficient. + +Audit each individual driver calling drm_detect_hdmi_monitor() and switch to +drm_display_info.is_hdmi if applicable. + +Contact: Laurent Pinchart, respective driver maintainers + +Level: Intermediate + Core refactorings ================= diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 5f3bc3486fde..ad41764a4ebe 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -4647,6 +4647,9 @@ EXPORT_SYMBOL(drm_av_sync_delay); * * Parse the CEA extension according to CEA-861-B. * + * Drivers that have added the modes parsed from EDID to drm_display_info + * should use &drm_display_info.is_hdmi instead of calling this function. + * * Return: True if the monitor is HDMI, false if not or unknown. */ bool drm_detect_hdmi_monitor(struct edid *edid) @@ -4881,6 +4884,8 @@ drm_parse_hdmi_vsdb_video(struct drm_connector *connector, const u8 *db) struct drm_display_info *info = &connector->display_info; u8 len = cea_db_payload_len(db); + info->is_hdmi = true; + if (len >= 6) info->dvi_dual = db[6] & 1; if (len >= 7) @@ -4949,6 +4954,7 @@ drm_reset_display_info(struct drm_connector *connector) info->cea_rev = 0; info->max_tmds_clock = 0; info->dvi_dual = false; + info->is_hdmi = false; info->has_hdmi_infoframe = false; info->rgb_quant_range_selectable = false; memset(&info->hdmi, 0, sizeof(info->hdmi)); diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index c3bd5262db9c..0df7a95ca5d9 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -435,6 +435,14 @@ struct drm_display_info { bool dvi_dual; /** + * @is_hdmi: True if the sink is an HDMI device. + * + * This field shall be used instead of calling + * drm_detect_hdmi_monitor() when possible. + */ + bool is_hdmi; + + /** * @has_hdmi_infoframe: Does the sink support the HDMI infoframe? */ bool has_hdmi_infoframe; |