diff options
| author | Marta Lofstedt <marta.lofstedt@intel.com> | 2016-11-02 09:38:26 +0200 |
|---|---|---|
| committer | Martin Peres <martin.peres@linux.intel.com> | 2017-01-23 10:27:11 +0200 |
| commit | 6a6f1bc16ed7e9c0aefeb3603355b8f3ff6db851 (patch) | |
| tree | 48364750636d72b5ff9997ce6dbbaea295fb87d0 | |
| parent | 7c9be67b0f41f69ef46398593802040b4e4c37c6 (diff) | |
drm: add a get_property callback for drm properties
This callback allows a driver to override the internal value
of the drm property.
Signed-off-by: Marta Lofstedt <marta.lofstedt@intel.com>]
| -rw-r--r-- | drivers/gpu/drm/drm_mode_object.c | 20 | ||||
| -rw-r--r-- | include/drm/drm_property.h | 12 |
2 files changed, 30 insertions, 2 deletions
diff --git a/drivers/gpu/drm/drm_mode_object.c b/drivers/gpu/drm/drm_mode_object.c index 14543ff08c51..fedeca5e1cce 100644 --- a/drivers/gpu/drm/drm_mode_object.c +++ b/drivers/gpu/drm/drm_mode_object.c @@ -27,6 +27,11 @@ #include "drm_crtc_internal.h" +static int _drm_object_property_get_value(struct drm_mode_object *obj, + struct drm_property *property, + uint64_t *val, + bool use_get_property); + /* * Internal function to assign a slot in the object idr and optionally * register the object into the idr. @@ -268,6 +273,15 @@ EXPORT_SYMBOL(drm_object_property_set_value); int drm_object_property_get_value(struct drm_mode_object *obj, struct drm_property *property, uint64_t *val) { + return _drm_object_property_get_value(obj, property, val, true); +} +EXPORT_SYMBOL(drm_object_property_get_value); + +static int _drm_object_property_get_value(struct drm_mode_object *obj, + struct drm_property *property, + uint64_t *val, + bool non_cached) +{ int i; /* read-only properties bypass atomic mechanism and still store @@ -280,7 +294,10 @@ int drm_object_property_get_value(struct drm_mode_object *obj, for (i = 0; i < obj->properties->count; i++) { if (obj->properties->properties[i] == property) { - *val = obj->properties->values[i]; + if (property->get_property && non_cached) + *val = property->get_property(obj); + else + *val = obj->properties->values[i]; return 0; } @@ -288,7 +305,6 @@ int drm_object_property_get_value(struct drm_mode_object *obj, return -EINVAL; } -EXPORT_SYMBOL(drm_object_property_get_value); /* helper for getconnector and getproperties ioctls */ int drm_mode_object_get_properties(struct drm_mode_object *obj, bool atomic, diff --git a/include/drm/drm_property.h b/include/drm/drm_property.h index 43c4b6a2046d..4931bab77424 100644 --- a/include/drm/drm_property.h +++ b/include/drm/drm_property.h @@ -185,6 +185,18 @@ struct drm_property { * enum and bitmask values. */ struct list_head enum_list; + + /** + * @get_property + * + * This callback allows a driver to override the internal value + * of the drm property. The callback is optional. + * + * RETURNS: + * + * The value of the property + */ + uint64_t (*get_property)(struct drm_mode_object *obj); }; /** |