1 /* SPDX-License-Identifier: GPL-2.0+ */
2 //
3 // OWL pll 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 #ifndef _OWL_PLL_H_
12 #define _OWL_PLL_H_
13
14 #include "owl-common.h"
15
16 #define OWL_PLL_DEF_DELAY 50
17
18 /* last entry should have rate = 0 */
19 struct clk_pll_table {
20 unsigned int val;
21 unsigned long rate;
22 };
23
24 struct owl_pll_hw {
25 u32 reg;
26 u32 bfreq;
27 u8 bit_idx;
28 u8 shift;
29 u8 width;
30 u8 min_mul;
31 u8 max_mul;
32 u8 delay;
33 const struct clk_pll_table *table;
34 };
35
36 struct owl_pll {
37 struct owl_pll_hw pll_hw;
38 struct owl_clk_common common;
39 };
40
41 #define OWL_PLL_HW(_reg, _bfreq, _bit_idx, _shift, \
42 _width, _min_mul, _max_mul, _delay, _table) \
43 { \
44 .reg = _reg, \
45 .bfreq = _bfreq, \
46 .bit_idx = _bit_idx, \
47 .shift = _shift, \
48 .width = _width, \
49 .min_mul = _min_mul, \
50 .max_mul = _max_mul, \
51 .delay = _delay, \
52 .table = _table, \
53 }
54
55 #define OWL_PLL(_struct, _name, _parent, _reg, _bfreq, _bit_idx, \
56 _shift, _width, _min_mul, _max_mul, _table, _flags) \
57 struct owl_pll _struct = { \
58 .pll_hw = OWL_PLL_HW(_reg, _bfreq, _bit_idx, _shift, \
59 _width, _min_mul, _max_mul, \
60 OWL_PLL_DEF_DELAY, _table), \
61 .common = { \
62 .regmap = NULL, \
63 .hw.init = CLK_HW_INIT(_name, \
64 _parent, \
65 &owl_pll_ops, \
66 _flags), \
67 }, \
68 }
69
70 #define OWL_PLL_NO_PARENT(_struct, _name, _reg, _bfreq, _bit_idx, \
71 _shift, _width, _min_mul, _max_mul, _table, _flags) \
72 struct owl_pll _struct = { \
73 .pll_hw = OWL_PLL_HW(_reg, _bfreq, _bit_idx, _shift, \
74 _width, _min_mul, _max_mul, \
75 OWL_PLL_DEF_DELAY, _table), \
76 .common = { \
77 .regmap = NULL, \
78 .hw.init = CLK_HW_INIT_NO_PARENT(_name, \
79 &owl_pll_ops, \
80 _flags), \
81 }, \
82 }
83
84 #define OWL_PLL_NO_PARENT_DELAY(_struct, _name, _reg, _bfreq, _bit_idx, \
85 _shift, _width, _min_mul, _max_mul, _delay, _table, \
86 _flags) \
87 struct owl_pll _struct = { \
88 .pll_hw = OWL_PLL_HW(_reg, _bfreq, _bit_idx, _shift, \
89 _width, _min_mul, _max_mul, \
90 _delay, _table), \
91 .common = { \
92 .regmap = NULL, \
93 .hw.init = CLK_HW_INIT_NO_PARENT(_name, \
94 &owl_pll_ops, \
95 _flags), \
96 }, \
97 }
98
99 #define mul_mask(m) ((1 << ((m)->width)) - 1)
100
hw_to_owl_pll(const struct clk_hw * hw)101 static inline struct owl_pll *hw_to_owl_pll(const struct clk_hw *hw)
102 {
103 struct owl_clk_common *common = hw_to_owl_clk_common(hw);
104
105 return container_of(common, struct owl_pll, common);
106 }
107
108 extern const struct clk_ops owl_pll_ops;
109
110 #endif /* _OWL_PLL_H_ */
111