1 /* 2 * Copyright (c) 2012 The Chromium OS Authors. All rights reserved. 3 * Use of this source code is governed by a BSD-style license that can be 4 * found in the LICENSE file. 5 * 6 * Alternatively, this software may be distributed under the terms of the 7 * GNU General Public License ("GPL") version 2 as published by the Free 8 * Software Foundation. 9 */ 10 11 #include <common.h> 12 #include <cros_ec.h> 13 #include <dm.h> 14 #include <errno.h> 15 16 DECLARE_GLOBAL_DATA_PTR; 17 18 #ifndef CONFIG_DM_CROS_EC 19 struct local_info { 20 struct cros_ec_dev *cros_ec_dev; /* Pointer to cros_ec device */ 21 int cros_ec_err; /* Error for cros_ec, 0 if ok */ 22 }; 23 24 static struct local_info local; 25 #endif 26 27 struct cros_ec_dev *board_get_cros_ec_dev(void) 28 { 29 #ifdef CONFIG_DM_CROS_EC 30 struct udevice *dev; 31 int ret; 32 33 ret = uclass_get_device(UCLASS_CROS_EC, 0, &dev); 34 if (ret) { 35 debug("%s: Error %d\n", __func__, ret); 36 return NULL; 37 } 38 return dev->uclass_priv; 39 #else 40 return local.cros_ec_dev; 41 #endif 42 } 43 44 static int board_init_cros_ec_devices(const void *blob) 45 { 46 #ifndef CONFIG_DM_CROS_EC 47 local.cros_ec_err = cros_ec_init(blob, &local.cros_ec_dev); 48 if (local.cros_ec_err) 49 return -1; /* Will report in board_late_init() */ 50 #endif 51 52 return 0; 53 } 54 55 int cros_ec_board_init(void) 56 { 57 return board_init_cros_ec_devices(gd->fdt_blob); 58 } 59 60 int cros_ec_get_error(void) 61 { 62 #ifdef CONFIG_DM_CROS_EC 63 struct udevice *dev; 64 int ret; 65 66 ret = uclass_get_device(UCLASS_CROS_EC, 0, &dev); 67 if (ret && ret != -ENODEV) 68 return ret; 69 70 return 0; 71 #else 72 return local.cros_ec_err; 73 #endif 74 } 75