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_ */ |
74 | |