1 /*- 2 * Copyright (c) 2021 Adrian Chadd <adrian@FreeBSD.org>. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 * SUCH DAMAGE. 24 */ 25 26 #include <sys/param.h> 27 #include <sys/systm.h> 28 #include <sys/bus.h> 29 #include <sys/lock.h> 30 #include <sys/mutex.h> 31 #include <sys/rman.h> 32 #include <machine/bus.h> 33 34 #include "qcom_clk_freqtbl.h" 35 36 /* 37 * Walk the list of frequencies and return the highest frequency supported. 38 */ 39 const struct qcom_clk_freq_tbl * 40 qcom_clk_freq_tbl_lookup(const struct qcom_clk_freq_tbl *tbl, uint64_t freq) 41 { 42 const struct qcom_clk_freq_tbl *t; 43 44 if (tbl == NULL) 45 return (NULL); 46 47 for (t = tbl; t->freq !=0; t++) { 48 if (freq <= t->freq) 49 return (t); 50 } 51 52 return (NULL); 53 } 54