ast_backup_fw     300 drivers/gpu/drm/ast/ast_drv.h bool ast_backup_fw(struct drm_device *dev, u8 *addr, u32 size);
ast_backup_fw     246 drivers/gpu/drm/ast/ast_main.c 				if (ast_backup_fw(dev, ast->dp501_fw_addr, 32*1024)) {