/* create extra planes */
int xilinx_drm_plane_create_planes(struct xilinx_drm_plane_manager *manager,
unsigned int possible_crtcs)
{
struct xilinx_drm_plane *plane;
int i;
int err_ret;
xilinx_drm_plane_create_property(manager);
/* find if there any available plane, and create if available */
for (i = 0; i < manager->num_planes; i++) {
if (manager->planes[i])
continue;
plane = xilinx_drm_plane_create(manager, possible_crtcs, false);
if (IS_ERR(plane)) {
DRM_ERROR("failed to allocate a plane\n");
err_ret = PTR_ERR(plane);
goto err_out;
}
xilinx_drm_plane_attach_property(&plane->base);
manager->planes[i] = plane;
}
return 0;
err_out:
xilinx_drm_plane_destroy_planes(manager);
return err_ret;
}
struct xilinx_drm_plane_manager *
xilinx_drm_plane_probe_manager(struct drm_device *drm)
{
struct xilinx_drm_plane_manager *manager;
struct device *dev = drm->dev;
struct device_node *sub_node;
const char *format;
int ret;
manager = devm_kzalloc(dev, sizeof(*manager), GFP_KERNEL);
if (!manager)
return ERR_PTR(-ENOMEM);
/* this node is used to create a plane */
manager->node = of_get_child_by_name(dev->of_node, "planes");
if (!manager->node) {
DRM_ERROR("failed to get a planes node\n");
return ERR_PTR(-EINVAL);
}
/* check the base pixel format of plane manager */
ret = of_property_read_string(manager->node, "xlnx,pixel-format",
&format);
if (ret < 0) {
DRM_ERROR("failed to get a plane manager format\n");
return ERR_PTR(ret);
}
ret = xilinx_drm_format_by_name(format, &manager->format);
if (ret < 0) {
DRM_ERROR("invalid plane manager format\n");
return ERR_PTR(ret);
}
manager->drm = drm;
/* probe an OSD. proceed even if there's no OSD */
sub_node = of_parse_phandle(dev->of_node, "xlnx,osd", 0);
if (sub_node) {
manager->osd = xilinx_osd_probe(dev, sub_node);
of_node_put(sub_node);
if (IS_ERR(manager->osd)) {
of_node_put(manager->node);
DRM_ERROR("failed to probe an osd\n");
return ERR_CAST(manager->osd);
}
manager->default_alpha = OSD_MAX_ALPHA;
}
manager->dp_sub = xilinx_drm_dp_sub_of_get(drm->dev->of_node);
if (IS_ERR(manager->dp_sub)) {
DRM_DEBUG_KMS("failed to get a dp_sub\n");
return ERR_CAST(manager->dp_sub);
} else if (manager->dp_sub != NULL) {
manager->default_alpha = XILINX_DRM_DP_SUB_MAX_ALPHA;
}
ret = xilinx_drm_plane_init_manager(manager);
if (ret) {
DRM_ERROR("failed to init a plane manager\n");
return ERR_PTR(ret);
}
xilinx_drm_plane_create_property(manager);
return manager;
}
