1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Copyright (C) 2023 Inochi Amaoto <inochiama@outlook.com>
4 */
5
6 #ifndef _CLK_SOPHGO_CV18XX_IP_H_
7 #define _CLK_SOPHGO_CV18XX_IP_H_
8
9 #include <linux/compiler.h>
10 #include <linux/clk-provider.h>
11 #include <linux/bitfield.h>
12
13 struct cv1800_clk_common {
14 void __iomem *base;
15 spinlock_t *lock;
16 struct clk_hw hw;
17 unsigned long features;
18 };
19
20 #define CV1800_CLK_COMMON(_name, _parents, _op, _flags) \
21 { \
22 .hw.init = CLK_HW_INIT_PARENTS_DATA(_name, _parents, \
23 _op, _flags), \
24 }
25
26 static inline struct cv1800_clk_common *
hw_to_cv1800_clk_common(struct clk_hw * hw)27 hw_to_cv1800_clk_common(struct clk_hw *hw)
28 {
29 return container_of(hw, struct cv1800_clk_common, hw);
30 }
31
32 struct cv1800_clk_regbit {
33 u16 reg;
34 s8 shift;
35 };
36
37 struct cv1800_clk_regfield {
38 u16 reg;
39 u8 shift;
40 u8 width;
41 s16 initval;
42 unsigned long flags;
43 };
44
45 #define CV1800_CLK_BIT(_reg, _shift) \
46 { \
47 .reg = _reg, \
48 .shift = _shift, \
49 }
50
51 #define CV1800_CLK_REG(_reg, _shift, _width, _initval, _flags) \
52 { \
53 .reg = _reg, \
54 .shift = _shift, \
55 .width = _width, \
56 .initval = _initval, \
57 .flags = _flags, \
58 }
59
60 #define cv1800_clk_regfield_genmask(_reg) \
61 GENMASK((_reg)->shift + (_reg)->width - 1, (_reg)->shift)
62 #define cv1800_clk_regfield_get(_val, _reg) \
63 (((_val) >> (_reg)->shift) & GENMASK((_reg)->width - 1, 0))
64 #define cv1800_clk_regfield_set(_val, _new, _reg) \
65 (((_val) & ~cv1800_clk_regfield_genmask((_reg))) | \
66 (((_new) & GENMASK((_reg)->width - 1, 0)) << (_reg)->shift))
67
68 #define _CV1800_SET_FIELD(_reg, _val, _field) \
69 (((_reg) & ~(_field)) | FIELD_PREP((_field), (_val)))
70
71 int cv1800_clk_setbit(struct cv1800_clk_common *common,
72 struct cv1800_clk_regbit *field);
73 int cv1800_clk_clearbit(struct cv1800_clk_common *common,
74 struct cv1800_clk_regbit *field);
75 int cv1800_clk_checkbit(struct cv1800_clk_common *common,
76 struct cv1800_clk_regbit *field);
77
78 void cv1800_clk_wait_for_lock(struct cv1800_clk_common *common,
79 u32 reg, u32 lock);
80
81 #endif // _CLK_SOPHGO_CV18XX_IP_H_
82