1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2021 Adrian Chadd <adrian@FreeBSD.org> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #ifndef __QCOM_CLK_RCG2_H__ 29 #define __QCOM_CLK_RCG2_H__ 30 31 #include "qcom_clk_freqtbl.h" 32 33 /* Flags */ 34 /* Set the rate on the parent clock, not just ours */ 35 #define QCOM_CLK_RCG2_FLAGS_SET_RATE_PARENT 0x1 36 /* Must not stop this clock/gate! */ 37 #define QCOM_CLK_RCG2_FLAGS_CRITICAL 0x2 38 39 /* prediv to hw mapping */ 40 #define QCOM_CLK_FREQTBL_PREDIV_RCG2(prediv) (2*(prediv)-1) 41 42 struct qcom_clk_rcg2_def { 43 struct clknode_init_def clkdef; 44 uint32_t cmd_rcgr; /* rcg2 register start */ 45 uint32_t hid_width; /* pre-divisor width */ 46 uint32_t mnd_width; /* mn:d divisor width */ 47 int32_t safe_src_idx; /* safe parent when disabling a shared 48 * rcg2 */ 49 uint32_t cfg_offset; /* cfg offset after cmd_rcgr */ 50 int32_t safe_pre_parent_idx; /* safe parent before switching 51 * parent mux */ 52 uint32_t flags; 53 const struct qcom_clk_freq_tbl *freq_tbl; 54 }; 55 56 extern int qcom_clk_rcg2_register(struct clkdom *clkdom, 57 struct qcom_clk_rcg2_def *clkdef); 58 59 #endif /* __QCOM_CLK_RCG2_H__ */ 60