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drm: add a path blob property

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This property will be used by the MST code to provide userspace
with a path to parse so it can recognise connectors around hotplugs.

Reviewed-by: Todd Previte <tprevite@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie
2014-06-05 14:01:31 +10:00
parent 65c2a89c30
commit 43aba7eb0d
2 changed files with 31 additions and 0 deletions
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26
drivers/gpu/drm/drm_crtc.c
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@@ -1257,6 +1257,7 @@ static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
{
struct drm_property *edid;
struct drm_property *dpms;
struct drm_property *dev_path;
/*
* Standard properties (apply to all connectors)
@@ -1271,6 +1272,12 @@ static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
ARRAY_SIZE(drm_dpms_enum_list));
dev->mode_config.dpms_property = dpms;
dev_path = drm_property_create(dev,
DRM_MODE_PROP_BLOB |
DRM_MODE_PROP_IMMUTABLE,
"PATH", 0);
dev->mode_config.path_property = dev_path;
return 0;
}
@@ -3755,6 +3762,25 @@ done:
return ret;
}
int drm_mode_connector_set_path_property(struct drm_connector *connector,
char *path)
{
struct drm_device *dev = connector->dev;
int ret, size;
size = strlen(path) + 1;
connector->path_blob_ptr = drm_property_create_blob(connector->dev,
size, path);
if (!connector->path_blob_ptr)
return -EINVAL;
ret = drm_object_property_set_value(&connector->base,
dev->mode_config.path_property,
connector->path_blob_ptr->base.id);
return ret;
}
EXPORT_SYMBOL(drm_mode_connector_set_path_property);
/**
* drm_mode_connector_update_edid_property - update the edid property of a connector
* @connector: drm connector