1// SPDX-License-Identifier: GPL-2.0
2//
3// Spreadtrum composite clock driver
4//
5// Copyright (C) 2017 Spreadtrum, Inc.
6// Author: Chunyan Zhang <chunyan.zhang@spreadtrum.com>
7
8#include <linux/clk-provider.h>
9
10#include "composite.h"
11
12static int sprd_comp_determine_rate(struct clk_hw *hw,
13 struct clk_rate_request *req)
14{
15 struct sprd_comp *cc = hw_to_sprd_comp(hw);
16
17 return divider_determine_rate(hw, req, NULL, width: cc->div.width, flags: 0);
18}
19
20static unsigned long sprd_comp_recalc_rate(struct clk_hw *hw,
21 unsigned long parent_rate)
22{
23 struct sprd_comp *cc = hw_to_sprd_comp(hw);
24
25 return sprd_div_helper_recalc_rate(common: &cc->common, div: &cc->div, parent_rate);
26}
27
28static int sprd_comp_set_rate(struct clk_hw *hw, unsigned long rate,
29 unsigned long parent_rate)
30{
31 struct sprd_comp *cc = hw_to_sprd_comp(hw);
32
33 return sprd_div_helper_set_rate(common: &cc->common, div: &cc->div,
34 rate, parent_rate);
35}
36
37static u8 sprd_comp_get_parent(struct clk_hw *hw)
38{
39 struct sprd_comp *cc = hw_to_sprd_comp(hw);
40
41 return sprd_mux_helper_get_parent(common: &cc->common, mux: &cc->mux);
42}
43
44static int sprd_comp_set_parent(struct clk_hw *hw, u8 index)
45{
46 struct sprd_comp *cc = hw_to_sprd_comp(hw);
47
48 return sprd_mux_helper_set_parent(common: &cc->common, mux: &cc->mux, index);
49}
50
51const struct clk_ops sprd_comp_ops = {
52 .get_parent = sprd_comp_get_parent,
53 .set_parent = sprd_comp_set_parent,
54
55 .determine_rate = sprd_comp_determine_rate,
56 .recalc_rate = sprd_comp_recalc_rate,
57 .set_rate = sprd_comp_set_rate,
58};
59EXPORT_SYMBOL_GPL(sprd_comp_ops);
60

source code of linux/drivers/clk/sprd/composite.c