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
sprd_comp_determine_rate(struct clk_hw * hw,struct clk_rate_request * req)12 static 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, cc->div.width, 0);
18 }
19
sprd_comp_recalc_rate(struct clk_hw * hw,unsigned long parent_rate)20 static 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(&cc->common, &cc->div, parent_rate);
26 }
27
sprd_comp_set_rate(struct clk_hw * hw,unsigned long rate,unsigned long parent_rate)28 static 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(&cc->common, &cc->div,
34 rate, parent_rate);
35 }
36
sprd_comp_get_parent(struct clk_hw * hw)37 static 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(&cc->common, &cc->mux);
42 }
43
sprd_comp_set_parent(struct clk_hw * hw,u8 index)44 static 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(&cc->common, &cc->mux, index);
49 }
50
51 const 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 };
59 EXPORT_SYMBOL_GPL(sprd_comp_ops);
60