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1// SPDX-License-Identifier: GPL-2.0+
2//
3// OWL composite clock driver
4//
5// Copyright (c) 2014 Actions Semi Inc.
6// Author: David Liu <liuwei@actions-semi.com>
7//
8// Copyright (c) 2018 Linaro Ltd.
9// Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
10
11#include <linux/clk-provider.h>
12#include <linux/regmap.h>
13
14#include "owl-composite.h"
15
16static u8 owl_comp_get_parent(struct clk_hw *hw)
17{
18 struct owl_composite *comp = hw_to_owl_comp(hw);
19
20 return owl_mux_helper_get_parent(&comp->common, &comp->mux_hw);
21}
22
23static int owl_comp_set_parent(struct clk_hw *hw, u8 index)
24{
25 struct owl_composite *comp = hw_to_owl_comp(hw);
26
27 return owl_mux_helper_set_parent(&comp->common, &comp->mux_hw, index);
28}
29
30static void owl_comp_disable(struct clk_hw *hw)
31{
32 struct owl_composite *comp = hw_to_owl_comp(hw);
33 struct owl_clk_common *common = &comp->common;
34
35 owl_gate_set(common, &comp->gate_hw, false);
36}
37
38static int owl_comp_enable(struct clk_hw *hw)
39{
40 struct owl_composite *comp = hw_to_owl_comp(hw);
41 struct owl_clk_common *common = &comp->common;
42
43 owl_gate_set(common, &comp->gate_hw, true);
44
45 return 0;
46}
47
48static int owl_comp_is_enabled(struct clk_hw *hw)
49{
50 struct owl_composite *comp = hw_to_owl_comp(hw);
51 struct owl_clk_common *common = &comp->common;
52
53 return owl_gate_clk_is_enabled(common, &comp->gate_hw);
54}
55
56static int owl_comp_div_determine_rate(struct clk_hw *hw,
57 struct clk_rate_request *req)
58{
59 struct owl_composite *comp = hw_to_owl_comp(hw);
60 long rate;
61
62 rate = owl_divider_helper_round_rate(&comp->common, &comp->rate.div_hw,
63 req->rate, &req->best_parent_rate);
64 if (rate < 0)
65 return rate;
66
67 req->rate = rate;
68 return 0;
69}
70
71static unsigned long owl_comp_div_recalc_rate(struct clk_hw *hw,
72 unsigned long parent_rate)
73{
74 struct owl_composite *comp = hw_to_owl_comp(hw);
75
76 return owl_divider_helper_recalc_rate(&comp->common, &comp->rate.div_hw,
77 parent_rate);
78}
79
80static int owl_comp_div_set_rate(struct clk_hw *hw, unsigned long rate,
81 unsigned long parent_rate)
82{
83 struct owl_composite *comp = hw_to_owl_comp(hw);
84
85 return owl_divider_helper_set_rate(&comp->common, &comp->rate.div_hw,
86 rate, parent_rate);
87}
88
89static int owl_comp_fact_determine_rate(struct clk_hw *hw,
90 struct clk_rate_request *req)
91{
92 struct owl_composite *comp = hw_to_owl_comp(hw);
93 long rate;
94
95 rate = owl_factor_helper_round_rate(&comp->common,
96 &comp->rate.factor_hw,
97 req->rate, &req->best_parent_rate);
98 if (rate < 0)
99 return rate;
100
101 req->rate = rate;
102 return 0;
103}
104
105static unsigned long owl_comp_fact_recalc_rate(struct clk_hw *hw,
106 unsigned long parent_rate)
107{
108 struct owl_composite *comp = hw_to_owl_comp(hw);
109
110 return owl_factor_helper_recalc_rate(&comp->common,
111 &comp->rate.factor_hw,
112 parent_rate);
113}
114
115static int owl_comp_fact_set_rate(struct clk_hw *hw, unsigned long rate,
116 unsigned long parent_rate)
117{
118 struct owl_composite *comp = hw_to_owl_comp(hw);
119
120 return owl_factor_helper_set_rate(&comp->common,
121 &comp->rate.factor_hw,
122 rate, parent_rate);
123}
124
125static long owl_comp_fix_fact_round_rate(struct clk_hw *hw, unsigned long rate,
126 unsigned long *parent_rate)
127{
128 struct owl_composite *comp = hw_to_owl_comp(hw);
129 struct clk_fixed_factor *fix_fact_hw = &comp->rate.fix_fact_hw;
130
131 return comp->fix_fact_ops->round_rate(&fix_fact_hw->hw, rate, parent_rate);
132}
133
134static unsigned long owl_comp_fix_fact_recalc_rate(struct clk_hw *hw,
135 unsigned long parent_rate)
136{
137 struct owl_composite *comp = hw_to_owl_comp(hw);
138 struct clk_fixed_factor *fix_fact_hw = &comp->rate.fix_fact_hw;
139
140 return comp->fix_fact_ops->recalc_rate(&fix_fact_hw->hw, parent_rate);
141
142}
143
144static int owl_comp_fix_fact_set_rate(struct clk_hw *hw, unsigned long rate,
145 unsigned long parent_rate)
146{
147 /*
148 * We must report success but we can do so unconditionally because
149 * owl_comp_fix_fact_round_rate returns values that ensure this call is
150 * a nop.
151 */
152
153 return 0;
154}
155
156const struct clk_ops owl_comp_div_ops = {
157 /* mux_ops */
158 .get_parent = owl_comp_get_parent,
159 .set_parent = owl_comp_set_parent,
160
161 /* gate_ops */
162 .disable = owl_comp_disable,
163 .enable = owl_comp_enable,
164 .is_enabled = owl_comp_is_enabled,
165
166 /* div_ops */
167 .determine_rate = owl_comp_div_determine_rate,
168 .recalc_rate = owl_comp_div_recalc_rate,
169 .set_rate = owl_comp_div_set_rate,
170};
171
172
173const struct clk_ops owl_comp_fact_ops = {
174 /* mux_ops */
175 .get_parent = owl_comp_get_parent,
176 .set_parent = owl_comp_set_parent,
177
178 /* gate_ops */
179 .disable = owl_comp_disable,
180 .enable = owl_comp_enable,
181 .is_enabled = owl_comp_is_enabled,
182
183 /* fact_ops */
184 .determine_rate = owl_comp_fact_determine_rate,
185 .recalc_rate = owl_comp_fact_recalc_rate,
186 .set_rate = owl_comp_fact_set_rate,
187};
188
189const struct clk_ops owl_comp_fix_fact_ops = {
190 /* gate_ops */
191 .disable = owl_comp_disable,
192 .enable = owl_comp_enable,
193 .is_enabled = owl_comp_is_enabled,
194
195 /* fix_fact_ops */
196 .round_rate = owl_comp_fix_fact_round_rate,
197 .recalc_rate = owl_comp_fix_fact_recalc_rate,
198 .set_rate = owl_comp_fix_fact_set_rate,
199};
200
201
202const struct clk_ops owl_comp_pass_ops = {
203 /* mux_ops */
204 .determine_rate = clk_hw_determine_rate_no_reparent,
205 .get_parent = owl_comp_get_parent,
206 .set_parent = owl_comp_set_parent,
207
208 /* gate_ops */
209 .disable = owl_comp_disable,
210 .enable = owl_comp_enable,
211 .is_enabled = owl_comp_is_enabled,
212};
1// SPDX-License-Identifier: GPL-2.0+
2//
3// OWL composite clock driver
4//
5// Copyright (c) 2014 Actions Semi Inc.
6// Author: David Liu <liuwei@actions-semi.com>
7//
8// Copyright (c) 2018 Linaro Ltd.
9// Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
10
11#include <linux/clk-provider.h>
12#include <linux/regmap.h>
13
14#include "owl-composite.h"
15
16static u8 owl_comp_get_parent(struct clk_hw *hw)
17{
18 struct owl_composite *comp = hw_to_owl_comp(hw);
19
20 return owl_mux_helper_get_parent(&comp->common, &comp->mux_hw);
21}
22
23static int owl_comp_set_parent(struct clk_hw *hw, u8 index)
24{
25 struct owl_composite *comp = hw_to_owl_comp(hw);
26
27 return owl_mux_helper_set_parent(&comp->common, &comp->mux_hw, index);
28}
29
30static void owl_comp_disable(struct clk_hw *hw)
31{
32 struct owl_composite *comp = hw_to_owl_comp(hw);
33 struct owl_clk_common *common = &comp->common;
34
35 owl_gate_set(common, &comp->gate_hw, false);
36}
37
38static int owl_comp_enable(struct clk_hw *hw)
39{
40 struct owl_composite *comp = hw_to_owl_comp(hw);
41 struct owl_clk_common *common = &comp->common;
42
43 owl_gate_set(common, &comp->gate_hw, true);
44
45 return 0;
46}
47
48static int owl_comp_is_enabled(struct clk_hw *hw)
49{
50 struct owl_composite *comp = hw_to_owl_comp(hw);
51 struct owl_clk_common *common = &comp->common;
52
53 return owl_gate_clk_is_enabled(common, &comp->gate_hw);
54}
55
56static long owl_comp_div_round_rate(struct clk_hw *hw, unsigned long rate,
57 unsigned long *parent_rate)
58{
59 struct owl_composite *comp = hw_to_owl_comp(hw);
60
61 return owl_divider_helper_round_rate(&comp->common, &comp->rate.div_hw,
62 rate, parent_rate);
63}
64
65static unsigned long owl_comp_div_recalc_rate(struct clk_hw *hw,
66 unsigned long parent_rate)
67{
68 struct owl_composite *comp = hw_to_owl_comp(hw);
69
70 return owl_divider_helper_recalc_rate(&comp->common, &comp->rate.div_hw,
71 parent_rate);
72}
73
74static int owl_comp_div_set_rate(struct clk_hw *hw, unsigned long rate,
75 unsigned long parent_rate)
76{
77 struct owl_composite *comp = hw_to_owl_comp(hw);
78
79 return owl_divider_helper_set_rate(&comp->common, &comp->rate.div_hw,
80 rate, parent_rate);
81}
82
83static long owl_comp_fact_round_rate(struct clk_hw *hw, unsigned long rate,
84 unsigned long *parent_rate)
85{
86 struct owl_composite *comp = hw_to_owl_comp(hw);
87
88 return owl_factor_helper_round_rate(&comp->common,
89 &comp->rate.factor_hw,
90 rate, parent_rate);
91}
92
93static unsigned long owl_comp_fact_recalc_rate(struct clk_hw *hw,
94 unsigned long parent_rate)
95{
96 struct owl_composite *comp = hw_to_owl_comp(hw);
97
98 return owl_factor_helper_recalc_rate(&comp->common,
99 &comp->rate.factor_hw,
100 parent_rate);
101}
102
103static int owl_comp_fact_set_rate(struct clk_hw *hw, unsigned long rate,
104 unsigned long parent_rate)
105{
106 struct owl_composite *comp = hw_to_owl_comp(hw);
107
108 return owl_factor_helper_set_rate(&comp->common,
109 &comp->rate.factor_hw,
110 rate, parent_rate);
111}
112
113static long owl_comp_fix_fact_round_rate(struct clk_hw *hw, unsigned long rate,
114 unsigned long *parent_rate)
115{
116 struct owl_composite *comp = hw_to_owl_comp(hw);
117 struct clk_fixed_factor *fix_fact_hw = &comp->rate.fix_fact_hw;
118
119 return comp->fix_fact_ops->round_rate(&fix_fact_hw->hw, rate, parent_rate);
120}
121
122static unsigned long owl_comp_fix_fact_recalc_rate(struct clk_hw *hw,
123 unsigned long parent_rate)
124{
125 struct owl_composite *comp = hw_to_owl_comp(hw);
126 struct clk_fixed_factor *fix_fact_hw = &comp->rate.fix_fact_hw;
127
128 return comp->fix_fact_ops->recalc_rate(&fix_fact_hw->hw, parent_rate);
129
130}
131
132static int owl_comp_fix_fact_set_rate(struct clk_hw *hw, unsigned long rate,
133 unsigned long parent_rate)
134{
135 /*
136 * We must report success but we can do so unconditionally because
137 * owl_comp_fix_fact_round_rate returns values that ensure this call is
138 * a nop.
139 */
140
141 return 0;
142}
143
144const struct clk_ops owl_comp_div_ops = {
145 /* mux_ops */
146 .get_parent = owl_comp_get_parent,
147 .set_parent = owl_comp_set_parent,
148
149 /* gate_ops */
150 .disable = owl_comp_disable,
151 .enable = owl_comp_enable,
152 .is_enabled = owl_comp_is_enabled,
153
154 /* div_ops */
155 .round_rate = owl_comp_div_round_rate,
156 .recalc_rate = owl_comp_div_recalc_rate,
157 .set_rate = owl_comp_div_set_rate,
158};
159
160
161const struct clk_ops owl_comp_fact_ops = {
162 /* mux_ops */
163 .get_parent = owl_comp_get_parent,
164 .set_parent = owl_comp_set_parent,
165
166 /* gate_ops */
167 .disable = owl_comp_disable,
168 .enable = owl_comp_enable,
169 .is_enabled = owl_comp_is_enabled,
170
171 /* fact_ops */
172 .round_rate = owl_comp_fact_round_rate,
173 .recalc_rate = owl_comp_fact_recalc_rate,
174 .set_rate = owl_comp_fact_set_rate,
175};
176
177const struct clk_ops owl_comp_fix_fact_ops = {
178 /* gate_ops */
179 .disable = owl_comp_disable,
180 .enable = owl_comp_enable,
181 .is_enabled = owl_comp_is_enabled,
182
183 /* fix_fact_ops */
184 .round_rate = owl_comp_fix_fact_round_rate,
185 .recalc_rate = owl_comp_fix_fact_recalc_rate,
186 .set_rate = owl_comp_fix_fact_set_rate,
187};
188
189
190const struct clk_ops owl_comp_pass_ops = {
191 /* mux_ops */
192 .get_parent = owl_comp_get_parent,
193 .set_parent = owl_comp_set_parent,
194
195 /* gate_ops */
196 .disable = owl_comp_disable,
197 .enable = owl_comp_enable,
198 .is_enabled = owl_comp_is_enabled,
199};