Add support for generic object properties IOCTLs

New library calls:
- drmModeObjectGetProperties
- drmModeFreeObjectProperties
- drmModeObjectSetProperties

Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Rob Clark <rob@ti.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>

1 files changed, 83 insertions, 0 deletions

diff --git a/xf86drmMode.c b/xf86drmMode.c
index c809c44a..a60c7cb1 100644
--- a/xf86drmMode.c
+++ b/xf86drmMode.c
@@ -974,3 +974,86 @@ void drmModeFreePlaneResources(drmModePlaneResPtr ptr)
 	drmFree(ptr->planes);
 	drmFree(ptr);
 }
+
+drmModeObjectPropertiesPtr drmModeObjectGetProperties(int fd,
+						      uint32_t object_id,
+						      uint32_t object_type)
+{
+	struct drm_mode_obj_get_properties properties;
+	drmModeObjectPropertiesPtr ret = NULL;
+	uint32_t count;
+
+retry:
+	memset(&properties, 0, sizeof(struct drm_mode_obj_get_properties));
+	properties.obj_id = object_id;
+	properties.obj_type = object_type;
+
+	if (drmIoctl(fd, DRM_IOCTL_MODE_OBJ_GETPROPERTIES, &properties))
+		return 0;
+
+	count = properties.count_props;
+
+	if (count) {
+		properties.props_ptr = VOID2U64(drmMalloc(count *
+							  sizeof(uint32_t)));
+		if (!properties.props_ptr)
+			goto err_allocs;
+		properties.prop_values_ptr = VOID2U64(drmMalloc(count *
+						      sizeof(uint64_t)));
+		if (!properties.prop_values_ptr)
+			goto err_allocs;
+	}
+
+	if (drmIoctl(fd, DRM_IOCTL_MODE_OBJ_GETPROPERTIES, &properties))
+		goto err_allocs;
+
+	if (count < properties.count_props) {
+		drmFree(U642VOID(properties.props_ptr));
+		drmFree(U642VOID(properties.prop_values_ptr));
+		goto retry;
+	}
+	count = properties.count_props;
+
+	ret = drmMalloc(sizeof(*ret));
+	if (!ret)
+		goto err_allocs;
+
+	ret->count_props = count;
+	ret->props = drmAllocCpy(U642VOID(properties.props_ptr),
+				 count, sizeof(uint32_t));
+	ret->prop_values = drmAllocCpy(U642VOID(properties.prop_values_ptr),
+				       count, sizeof(uint64_t));
+	if (ret->count_props && (!ret->props || !ret->prop_values)) {
+		drmFree(ret->props);
+		drmFree(ret->prop_values);
+		drmFree(ret);
+		ret = NULL;
+	}
+
+err_allocs:
+	drmFree(U642VOID(properties.props_ptr));
+	drmFree(U642VOID(properties.prop_values_ptr));
+	return ret;
+}
+
+void drmModeFreeObjectProperties(drmModeObjectPropertiesPtr ptr)
+{
+	if (!ptr)
+		return;
+	drmFree(ptr->props);
+	drmFree(ptr->prop_values);
+	drmFree(ptr);
+}
+
+int drmModeObjectSetProperty(int fd, uint32_t object_id, uint32_t object_type,
+			     uint32_t property_id, uint64_t value)
+{
+	struct drm_mode_obj_set_property prop;
+
+	prop.value = value;
+	prop.prop_id = property_id;
+	prop.obj_id = object_id;
+	prop.obj_type = object_type;
+
+	return DRM_IOCTL(fd, DRM_IOCTL_MODE_OBJ_SETPROPERTY, &prop);
+}