clk/sprd/composite.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 //
0003 // Spreadtrum composite clock driver
0004 //
0005 // Copyright (C) 2017 Spreadtrum, Inc.
0006 // Author: Chunyan Zhang <chunyan.zhang@spreadtrum.com>
0007
0008 #include <linux/clk-provider.h>
0009
0010 #include "composite.h"
0011
0012 static long sprd_comp_round_rate(struct clk_hw *hw, unsigned long rate,
0013                 unsigned long *parent_rate)
0014 {
0015     struct sprd_comp *cc = hw_to_sprd_comp(hw);
0016
0017     return sprd_div_helper_round_rate(&cc->common, &cc->div,
0018                      rate, parent_rate);
0019 }
0020
0021 static unsigned long sprd_comp_recalc_rate(struct clk_hw *hw,
0022                       unsigned long parent_rate)
0023 {
0024     struct sprd_comp *cc = hw_to_sprd_comp(hw);
0025
0026     return sprd_div_helper_recalc_rate(&cc->common, &cc->div, parent_rate);
0027 }
0028
0029 static int sprd_comp_set_rate(struct clk_hw *hw, unsigned long rate,
0030                  unsigned long parent_rate)
0031 {
0032     struct sprd_comp *cc = hw_to_sprd_comp(hw);
0033
0034     return sprd_div_helper_set_rate(&cc->common, &cc->div,
0035                        rate, parent_rate);
0036 }
0037
0038 static u8 sprd_comp_get_parent(struct clk_hw *hw)
0039 {
0040     struct sprd_comp *cc = hw_to_sprd_comp(hw);
0041
0042     return sprd_mux_helper_get_parent(&cc->common, &cc->mux);
0043 }
0044
0045 static int sprd_comp_set_parent(struct clk_hw *hw, u8 index)
0046 {
0047     struct sprd_comp *cc = hw_to_sprd_comp(hw);
0048
0049     return sprd_mux_helper_set_parent(&cc->common, &cc->mux, index);
0050 }
0051
0052 const struct clk_ops sprd_comp_ops = {
0053     .get_parent = sprd_comp_get_parent,
0054     .set_parent = sprd_comp_set_parent,
0055
0056     .round_rate = sprd_comp_round_rate,
0057     .recalc_rate    = sprd_comp_recalc_rate,
0058     .set_rate   = sprd_comp_set_rate,
0059 };
0060 EXPORT_SYMBOL_GPL(sprd_comp_ops);