1*ed41487bSjmcneill /* $NetBSD: clk_backend.h,v 1.4 2018/04/28 15:20:33 jmcneill Exp $ */ 2bd0f8235Sjmcneill 3bd0f8235Sjmcneill /*- 4bd0f8235Sjmcneill * Copyright (c) 2015 Jared D. McNeill <jmcneill@invisible.ca> 5bd0f8235Sjmcneill * All rights reserved. 6bd0f8235Sjmcneill * 7bd0f8235Sjmcneill * Redistribution and use in source and binary forms, with or without 8bd0f8235Sjmcneill * modification, are permitted provided that the following conditions 9bd0f8235Sjmcneill * are met: 10bd0f8235Sjmcneill * 1. Redistributions of source code must retain the above copyright 11bd0f8235Sjmcneill * notice, this list of conditions and the following disclaimer. 12bd0f8235Sjmcneill * 2. Redistributions in binary form must reproduce the above copyright 13bd0f8235Sjmcneill * notice, this list of conditions and the following disclaimer in the 14bd0f8235Sjmcneill * documentation and/or other materials provided with the distribution. 15bd0f8235Sjmcneill * 16bd0f8235Sjmcneill * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17bd0f8235Sjmcneill * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18bd0f8235Sjmcneill * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19bd0f8235Sjmcneill * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20bd0f8235Sjmcneill * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21bd0f8235Sjmcneill * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22bd0f8235Sjmcneill * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23bd0f8235Sjmcneill * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24bd0f8235Sjmcneill * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25bd0f8235Sjmcneill * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26bd0f8235Sjmcneill * SUCH DAMAGE. 27bd0f8235Sjmcneill */ 28bd0f8235Sjmcneill 29bd0f8235Sjmcneill #ifndef _DEV_CLK_CLK_BACKEND_H 30bd0f8235Sjmcneill #define _DEV_CLK_CLK_BACKEND_H 31bd0f8235Sjmcneill 32*ed41487bSjmcneill #include <sys/sysctl.h> 33*ed41487bSjmcneill 34bd0f8235Sjmcneill #include <dev/clk/clk.h> 35bd0f8235Sjmcneill 36e69bfca1Sjmcneill struct clk_domain { 37*ed41487bSjmcneill const char *name; 38*ed41487bSjmcneill const struct sysctlnode *node; 39e69bfca1Sjmcneill const struct clk_funcs *funcs; 40e69bfca1Sjmcneill void *priv; 41e69bfca1Sjmcneill }; 42e69bfca1Sjmcneill 43bd0f8235Sjmcneill struct clk { 44e69bfca1Sjmcneill struct clk_domain *domain; 45bd0f8235Sjmcneill const char *name; 46bd0f8235Sjmcneill u_int flags; 47bd0f8235Sjmcneill #define CLK_SET_RATE_PARENT 0x01 48bd0f8235Sjmcneill }; 49bd0f8235Sjmcneill 50bd0f8235Sjmcneill struct clk_funcs { 51bd0f8235Sjmcneill struct clk *(*get)(void *, const char *); 52bd0f8235Sjmcneill void (*put)(void *, struct clk *); 53bd0f8235Sjmcneill 54bd0f8235Sjmcneill u_int (*get_rate)(void *, struct clk *); 55bd0f8235Sjmcneill int (*set_rate)(void *, struct clk *, u_int); 5670d99699Sbouyer u_int (*round_rate)(void *, struct clk *, u_int); 57bd0f8235Sjmcneill int (*enable)(void *, struct clk *); 58bd0f8235Sjmcneill int (*disable)(void *, struct clk *); 59bd0f8235Sjmcneill int (*set_parent)(void *, struct clk *, struct clk *); 60bd0f8235Sjmcneill struct clk *(*get_parent)(void *, struct clk *); 61bd0f8235Sjmcneill }; 62bd0f8235Sjmcneill 63*ed41487bSjmcneill int clk_attach(struct clk *); 64*ed41487bSjmcneill 65bd0f8235Sjmcneill #endif /* _DEV_CLK_CLK_BACKEND_H */ 66