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authorDave Stevenson <dave.stevenson@raspberrypi.com>2022-02-21 12:59:02 +0300
committerMaxime Ripard <maxime@cerno.tech>2022-02-25 19:55:42 +0300
commitadf47b75297ebc71c53b6dc2d3c55f42b8fb79fd (patch)
tree36431419fe1a978bd2e82c1b71ef3e105afad1fb /include/drm
parentf6e63222c0a042098eaeea58f66116902208e2f5 (diff)
downloadlinux-adf47b75297ebc71c53b6dc2d3c55f42b8fb79fd.tar.xz
drm/object: Add drm_object_property_get_default_value() function
Some functions to create properties (drm_plane_create_zpos_property or drm_plane_create_color_properties for example) will ask for a range of acceptable value and an initial one. This initial value is then stored in the values array for that property. Let's provide an helper to access this property. Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> Signed-off-by: Maxime Ripard <maxime@cerno.tech> Link: https://patchwork.freedesktop.org/patch/msgid/20220221095918.18763-7-maxime@cerno.tech
Diffstat (limited to 'include/drm')
-rw-r--r--include/drm/drm_mode_object.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/drm/drm_mode_object.h b/include/drm/drm_mode_object.h
index c34a3e8030e1..912f1e415685 100644
--- a/include/drm/drm_mode_object.h
+++ b/include/drm/drm_mode_object.h
@@ -98,6 +98,10 @@ struct drm_object_properties {
* Hence atomic drivers should not use drm_object_property_set_value()
* and drm_object_property_get_value() on mutable objects, i.e. those
* without the DRM_MODE_PROP_IMMUTABLE flag set.
+ *
+ * For atomic drivers the default value of properties is stored in this
+ * array, so drm_object_property_get_default_value can be used to
+ * retrieve it.
*/
uint64_t values[DRM_OBJECT_MAX_PROPERTY];
};
@@ -126,6 +130,9 @@ int drm_object_property_set_value(struct drm_mode_object *obj,
int drm_object_property_get_value(struct drm_mode_object *obj,
struct drm_property *property,
uint64_t *value);
+int drm_object_property_get_default_value(struct drm_mode_object *obj,
+ struct drm_property *property,
+ uint64_t *val);
void drm_object_attach_property(struct drm_mode_object *obj,
struct drm_property *property,