From: Rob Clark <rob@xxxxxx>
An object property is an id (idr) for a drm mode object. This
will allow a property to be used set/get a framebuffer, CRTC, etc.
---
drivers/gpu/drm/drm_crtc.c | 28 ++++++++++++++++++++++++++++
include/drm/drm_crtc.h | 5 +++++
include/drm/drm_mode.h | 1 +
3 files changed, 34 insertions(+)
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 40a3f21..12829de 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -2859,6 +2859,23 @@ struct drm_property *drm_property_create_range(struct drm_device *dev, int flags
}
EXPORT_SYMBOL(drm_property_create_range);
+struct drm_property *drm_property_create_object(struct drm_device *dev,
+ int flags, const char *name, uint32_t type)
+{
+ struct drm_property *property;
+
+ flags |= DRM_MODE_PROP_OBJECT;
+
+ property = drm_property_create(dev, flags, name, 1);
+ if (!property)
+ return NULL;
+
+ property->values[0] = type;
+
+ return property;
+}
+EXPORT_SYMBOL(drm_property_create_object);
+
int drm_property_add_enum(struct drm_property *property, int index,
uint64_t value, const char *name)
{
@@ -3203,6 +3220,9 @@ static bool drm_property_change_is_valid(struct drm_property *property,
for (i = 0; i < property->num_values; i++)
valid_mask |= (1ULL << property->values[i]);
return !(value & ~valid_mask);
+ } else if (property->flags & DRM_MODE_PROP_OBJECT) {
+ /* check for valid object or zero happens elsewhere */
+ return true;
} else {
int i;
for (i = 0; i < property->num_values; i++)
@@ -3280,6 +3300,14 @@ static int drm_mode_set_obj_prop(struct drm_device *dev,
struct drm_property *property, uint64_t value)
{
if (drm_property_change_is_valid(property, value)) {
+ /* a zero value for an object property translates to null: */
+ if ((property->flags & DRM_MODE_PROP_OBJECT) && value) {
+ struct drm_mode_object *obj =
+ drm_mode_object_find(dev, value, property->values[0]);
+ if (!obj)
+ return -EINVAL;
+ value = VOID2U64(obj);
+ }
switch (obj->type) {
case DRM_MODE_OBJECT_CONNECTOR:
return drm_mode_connector_set_obj_prop(obj_to_connector(obj),
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index a609190..92df2f4 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -61,6 +61,9 @@ struct drm_object_properties {
uint64_t values[DRM_OBJECT_MAX_PROPERTY];
};
+#define U642VOID(x) ((void *)(unsigned long)(x))
+#define VOID2U64(x) ((uint64_t)(unsigned long)(x))
+
/*
* Note on terminology: here, for brevity and convenience, we refer to connector
* control chips as 'CRTCs'. They can control any type of connector, VGA, LVDS,
@@ -955,6 +958,8 @@ struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
const char *name,
uint64_t min, uint64_t max);
+struct drm_property *drm_property_create_object(struct drm_device *dev,
+ int flags, const char *name, uint32_t type);
extern void drm_property_destroy(struct drm_device *dev, struct drm_property *property);
extern int drm_property_add_enum(struct drm_property *property, int index,
uint64_t value, const char *name);
diff --git a/include/drm/drm_mode.h b/include/drm/drm_mode.h
index 5581980..cee4c53 100644
--- a/include/drm/drm_mode.h
+++ b/include/drm/drm_mode.h
@@ -231,6 +231,7 @@ struct drm_mode_get_connector {
#define DRM_MODE_PROP_ENUM (1<<3) /* enumerated type with text strings */
#define DRM_MODE_PROP_BLOB (1<<4)
#define DRM_MODE_PROP_BITMASK (1<<5) /* bitmask of enumerated types */
+#define DRM_MODE_PROP_OBJECT (1<<6) /* drm mode object */
struct drm_mode_property_enum {
__u64 value;
--
1.7.9.5
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