drm/rockchip: gem: add get phys ioctl

[firefly-linux-kernel-4.4.55.git] / drivers / gpu / drm / rockchip / rockchip_drm_gem.c

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
index d7dd65cba2c4cbca5b3af3cea9b74b1134305b38..0913f74b65c90aefeb1ccdcbbf0f90bfb922b690 100644 (file)
--- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
@@ -672,6 +672,30 @@ int rockchip_gem_map_offset_ioctl(struct drm_device *drm, void *data,
                                            &args->offset);
 }
 
+int rockchip_gem_get_phys_ioctl(struct drm_device *dev, void *data,
+                               struct drm_file *file_priv)
+{
+       struct drm_rockchip_gem_phys *args = data;
+       struct rockchip_gem_object *rk_obj;
+       struct drm_gem_object *obj;
+
+       obj = drm_gem_object_lookup(dev, file_priv, args->handle);
+       if (!obj) {
+               DRM_ERROR("failed to lookup gem object.\n");
+               return -EINVAL;
+       }
+       rk_obj = to_rockchip_obj(obj);
+
+       if (!(rk_obj->flags & ROCKCHIP_BO_CONTIG)) {
+               DRM_ERROR("Can't get phys address from non-continus buf.\n");
+               return -EINVAL;
+       }
+
+       args->phy_addr = page_to_phys(rk_obj->pages[0]);
+
+       return 0;
+}
+
 int rockchip_gem_create_ioctl(struct drm_device *dev, void *data,
                              struct drm_file *file_priv)
 {