1 /* $NetBSD: clk_backend.h,v 1.2 2017/04/16 12:28:21 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 2015 Jared D. McNeill <jmcneill@invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifndef _DEV_CLK_CLK_BACKEND_H 30 #define _DEV_CLK_CLK_BACKEND_H 31 32 #include <dev/clk/clk.h> 33 34 struct clk_domain { 35 const struct clk_funcs *funcs; 36 void *priv; 37 }; 38 39 struct clk { 40 struct clk_domain *domain; 41 const char *name; 42 u_int flags; 43 #define CLK_SET_RATE_PARENT 0x01 44 }; 45 46 struct clk_funcs { 47 struct clk *(*get)(void *, const char *); 48 void (*put)(void *, struct clk *); 49 50 u_int (*get_rate)(void *, struct clk *); 51 int (*set_rate)(void *, struct clk *, u_int); 52 int (*enable)(void *, struct clk *); 53 int (*disable)(void *, struct clk *); 54 int (*set_parent)(void *, struct clk *, struct clk *); 55 struct clk *(*get_parent)(void *, struct clk *); 56 }; 57 58 #endif /* _DEV_CLK_CLK_BACKEND_H */ 59