1 /* SPDX-License-Identifier: GPL-2.0+ */
2 //
3 // OWL gate 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_GATE_H_
12 #define _OWL_GATE_H_
13
14 #include "owl-common.h"
15
16 struct owl_gate_hw {
17 u32 reg;
18 u8 bit_idx;
19 u8 gate_flags;
20 };
21
22 struct owl_gate {
23 struct owl_gate_hw gate_hw;
24 struct owl_clk_common common;
25 };
26
27 #define OWL_GATE_HW(_reg, _bit_idx, _gate_flags) \
28 { \
29 .reg = _reg, \
30 .bit_idx = _bit_idx, \
31 .gate_flags = _gate_flags, \
32 }
33
34 #define OWL_GATE(_struct, _name, _parent, _reg, \
35 _bit_idx, _gate_flags, _flags) \
36 struct owl_gate _struct = { \
37 .gate_hw = OWL_GATE_HW(_reg, _bit_idx, _gate_flags), \
38 .common = { \
39 .regmap = NULL, \
40 .hw.init = CLK_HW_INIT(_name, \
41 _parent, \
42 &owl_gate_ops, \
43 _flags), \
44 } \
45 } \
46
47 #define OWL_GATE_NO_PARENT(_struct, _name, _reg, \
48 _bit_idx, _gate_flags, _flags) \
49 struct owl_gate _struct = { \
50 .gate_hw = OWL_GATE_HW(_reg, _bit_idx, _gate_flags), \
51 .common = { \
52 .regmap = NULL, \
53 .hw.init = CLK_HW_INIT_NO_PARENT(_name, \
54 &owl_gate_ops, \
55 _flags), \
56 }, \
57 } \
58
59 static inline struct owl_gate *hw_to_owl_gate(const struct clk_hw *hw)
60 {
61 struct owl_clk_common *common = hw_to_owl_clk_common(hw);
62
63 return container_of(common, struct owl_gate, common);
64 }
65
66 void owl_gate_set(const struct owl_clk_common *common,
67 const struct owl_gate_hw *gate_hw, bool enable);
68 int owl_gate_clk_is_enabled(const struct owl_clk_common *common,
69 const struct owl_gate_hw *gate_hw);
70
71 extern const struct clk_ops owl_gate_ops;
72
73 #endif /* _OWL_GATE_H_ */