drm/edid: update non-desktop use also from DisplayID

Use the DisplayID 2.0 primary use case information to deduce whether
this is a head-mounted display, and should not be used for desktop.

Cc: Iaroslav Boliukin <iam@lach.pw>
Cc: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Tested-by: Dmitry Osipenko <dmitry.osipenko@collabora.com> # HTC VIVE Pro 2
Reviewed-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/de75b2edddd7d30216e4dd5699a064dc737688f5.1676580180.git.jani.nikula@intel.com

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 3d0a4da661bc985c5c2b144fecd2d2de80677f26..03ad53a1ba8234fb70e1fb9271e872f67a9ac61a 100644 (file)
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -6433,6 +6433,29 @@ static void drm_reset_display_info(struct drm_connector *connector)
        info->quirks = 0;
 }
 
+static void update_displayid_info(struct drm_connector *connector,
+                                 const struct drm_edid *drm_edid)
+{
+       struct drm_display_info *info = &connector->display_info;
+       const struct displayid_block *block;
+       struct displayid_iter iter;
+
+       displayid_iter_edid_begin(drm_edid, &iter);
+       displayid_iter_for_each(block, &iter) {
+               if (displayid_version(&iter) == DISPLAY_ID_STRUCTURE_VER_20 &&
+                   (displayid_primary_use(&iter) == PRIMARY_USE_HEAD_MOUNTED_VR ||
+                    displayid_primary_use(&iter) == PRIMARY_USE_HEAD_MOUNTED_AR))
+                       info->non_desktop = true;
+
+               /*
+                * We're only interested in the base section here, no need to
+                * iterate further.
+                */
+               break;
+       }
+       displayid_iter_end(&iter);
+}
+
 static void update_display_info(struct drm_connector *connector,
                                const struct drm_edid *drm_edid)
 {
@@ -6463,6 +6486,8 @@ static void update_display_info(struct drm_connector *connector,
        info->color_formats |= DRM_COLOR_FORMAT_RGB444;
        drm_parse_cea_ext(connector, drm_edid);
 
+       update_displayid_info(connector, drm_edid);
+
        /*
         * Digital sink with "DFP 1.x compliant TMDS" according to EDID 1.3?
         *