1 /* 2 * Copyright (c) 2013 Google, Inc 3 * 4 * (C) Copyright 2012 5 * Pavel Herrmann <morpheus.ibis@gmail.com> 6 * 7 * SPDX-License-Identifier: GPL-2.0+ 8 */ 9 10 #ifndef _DM_ROOT_H_ 11 #define _DM_ROOT_H_ 12 13 struct device; 14 15 /** 16 * dm_root() - Return pointer to the top of the driver tree 17 * 18 * This function returns pointer to the root node of the driver tree, 19 * 20 * @return pointer to root device, or NULL if not inited yet 21 */ 22 struct device *dm_root(void); 23 24 /** 25 * dm_scan_platdata() - Scan all platform data and bind drivers 26 * 27 * This scans all available platdata and creates drivers for each 28 * 29 * @return 0 if OK, -ve on error 30 */ 31 int dm_scan_platdata(void); 32 33 /** 34 * dm_scan_fdt() - Scan the device tree and bind drivers 35 * 36 * This scans the device tree and creates a driver for each node 37 * 38 * @blob: Pointer to device tree blob 39 * @return 0 if OK, -ve on error 40 */ 41 int dm_scan_fdt(const void *blob); 42 43 /** 44 * dm_init() - Initialize Driver Model structures 45 * 46 * This function will initialize roots of driver tree and class tree. 47 * This needs to be called before anything uses the DM 48 * 49 * @return 0 if OK, -ve on error 50 */ 51 int dm_init(void); 52 53 #endif 54