1 /*- 2 * Copyright 2016 Michal Meloun <mmel@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef _DEV_HWRESET_HWRESET_H_ 27 #define _DEV_HWRESET_HWRESET_H_ 28 29 #include "opt_platform.h" 30 #include <sys/types.h> 31 #ifdef FDT 32 #include <dev/ofw/ofw_bus.h> 33 #endif 34 35 typedef struct hwreset *hwreset_t; 36 typedef struct hwreset_array *hwreset_array_t; 37 38 /* 39 * Provider interface 40 */ 41 #ifdef FDT 42 void hwreset_register_ofw_provider(device_t provider_dev); 43 void hwreset_unregister_ofw_provider(device_t provider_dev); 44 #endif 45 46 /* 47 * Consumer interface 48 */ 49 int hwreset_get_by_id(device_t consumer_dev, device_t provider_dev, intptr_t id, 50 hwreset_t *rst); 51 void hwreset_release(hwreset_t rst); 52 53 int hwreset_assert(hwreset_t rst); 54 int hwreset_deassert(hwreset_t rst); 55 int hwreset_is_asserted(hwreset_t rst, bool *value); 56 57 #ifdef FDT 58 int hwreset_get_by_ofw_name(device_t consumer_dev, phandle_t node, char *name, 59 hwreset_t *rst); 60 int hwreset_get_by_ofw_idx(device_t consumer_dev, phandle_t node, int idx, 61 hwreset_t *rst); 62 #endif 63 64 void hwreset_array_release(hwreset_array_t rsts); 65 int hwreset_array_assert(hwreset_array_t rsts); 66 int hwreset_array_deassert(hwreset_array_t rsts); 67 #ifdef FDT 68 int hwreset_array_get_ofw(device_t consumer_dev, phandle_t cnode, 69 hwreset_array_t *rsts); 70 #endif 71 72 73 #endif /* _DEV_HWRESET_HWRESET_H_ */ 74