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11f1ceca GD |
1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* | |
3 | * Copyright (c) 2018-2019, Linaro Ltd. | |
4 | * Author: Georgi Djakov <georgi.djakov@linaro.org> | |
5 | */ | |
6 | ||
7 | #ifndef __LINUX_INTERCONNECT_H | |
8 | #define __LINUX_INTERCONNECT_H | |
9 | ||
10 | #include <linux/mutex.h> | |
11 | #include <linux/types.h> | |
12 | ||
13 | /* macros for converting to icc units */ | |
14 | #define Bps_to_icc(x) ((x) / 1000) | |
15 | #define kBps_to_icc(x) (x) | |
16 | #define MBps_to_icc(x) ((x) * 1000) | |
17 | #define GBps_to_icc(x) ((x) * 1000 * 1000) | |
18 | #define bps_to_icc(x) (1) | |
19 | #define kbps_to_icc(x) ((x) / 8 + ((x) % 8 ? 1 : 0)) | |
20 | #define Mbps_to_icc(x) ((x) * 1000 / 8) | |
21 | #define Gbps_to_icc(x) ((x) * 1000 * 1000 / 8) | |
22 | ||
23 | struct icc_path; | |
24 | struct device; | |
25 | ||
b41b0ce5 GD |
26 | /** |
27 | * struct icc_bulk_data - Data used for bulk icc operations. | |
28 | * | |
29 | * @path: reference to the interconnect path (internal use) | |
30 | * @name: the name from the "interconnect-names" DT property | |
31 | * @avg_bw: average bandwidth in icc units | |
32 | * @peak_bw: peak bandwidth in icc units | |
33 | */ | |
34 | struct icc_bulk_data { | |
35 | struct icc_path *path; | |
36 | const char *name; | |
37 | u32 avg_bw; | |
38 | u32 peak_bw; | |
39 | }; | |
40 | ||
11f1ceca GD |
41 | #if IS_ENABLED(CONFIG_INTERCONNECT) |
42 | ||
87e3031b | 43 | struct icc_path *of_icc_get(struct device *dev, const char *name); |
e145d9a1 | 44 | struct icc_path *devm_of_icc_get(struct device *dev, const char *name); |
2fcfa72f | 45 | int devm_of_icc_bulk_get(struct device *dev, int num_paths, struct icc_bulk_data *paths); |
1597d453 | 46 | struct icc_path *of_icc_get_by_index(struct device *dev, int idx); |
11f1ceca | 47 | void icc_put(struct icc_path *path); |
7d374b20 GD |
48 | int icc_enable(struct icc_path *path); |
49 | int icc_disable(struct icc_path *path); | |
11f1ceca | 50 | int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw); |
127ab2cc | 51 | void icc_set_tag(struct icc_path *path, u32 tag); |
0430b1d5 | 52 | const char *icc_get_name(struct icc_path *path); |
e45f1c1d GD |
53 | int __must_check of_icc_bulk_get(struct device *dev, int num_paths, |
54 | struct icc_bulk_data *paths); | |
55 | void icc_bulk_put(int num_paths, struct icc_bulk_data *paths); | |
56 | int icc_bulk_set_bw(int num_paths, const struct icc_bulk_data *paths); | |
57 | int icc_bulk_enable(int num_paths, const struct icc_bulk_data *paths); | |
58 | void icc_bulk_disable(int num_paths, const struct icc_bulk_data *paths); | |
11f1ceca GD |
59 | |
60 | #else | |
61 | ||
87e3031b GD |
62 | static inline struct icc_path *of_icc_get(struct device *dev, |
63 | const char *name) | |
64 | { | |
65 | return NULL; | |
66 | } | |
67 | ||
e145d9a1 AA |
68 | static inline struct icc_path *devm_of_icc_get(struct device *dev, |
69 | const char *name) | |
70 | { | |
71 | return NULL; | |
72 | } | |
73 | ||
1597d453 GD |
74 | static inline struct icc_path *of_icc_get_by_index(struct device *dev, int idx) |
75 | { | |
76 | return NULL; | |
77 | } | |
78 | ||
11f1ceca GD |
79 | static inline void icc_put(struct icc_path *path) |
80 | { | |
81 | } | |
82 | ||
7d374b20 GD |
83 | static inline int icc_enable(struct icc_path *path) |
84 | { | |
85 | return 0; | |
86 | } | |
87 | ||
88 | static inline int icc_disable(struct icc_path *path) | |
89 | { | |
90 | return 0; | |
91 | } | |
92 | ||
11f1ceca GD |
93 | static inline int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw) |
94 | { | |
95 | return 0; | |
96 | } | |
97 | ||
127ab2cc GD |
98 | static inline void icc_set_tag(struct icc_path *path, u32 tag) |
99 | { | |
100 | } | |
101 | ||
0430b1d5 VK |
102 | static inline const char *icc_get_name(struct icc_path *path) |
103 | { | |
104 | return NULL; | |
105 | } | |
106 | ||
e45f1c1d GD |
107 | static inline int of_icc_bulk_get(struct device *dev, int num_paths, struct icc_bulk_data *paths) |
108 | { | |
109 | return 0; | |
110 | } | |
111 | ||
2fcfa72f PF |
112 | static inline int devm_of_icc_bulk_get(struct device *dev, int num_paths, |
113 | struct icc_bulk_data *paths) | |
114 | { | |
115 | return 0; | |
116 | } | |
117 | ||
e45f1c1d GD |
118 | static inline void icc_bulk_put(int num_paths, struct icc_bulk_data *paths) |
119 | { | |
120 | } | |
121 | ||
122 | static inline int icc_bulk_set_bw(int num_paths, const struct icc_bulk_data *paths) | |
123 | { | |
124 | return 0; | |
125 | } | |
126 | ||
127 | static inline int icc_bulk_enable(int num_paths, const struct icc_bulk_data *paths) | |
128 | { | |
129 | return 0; | |
130 | } | |
131 | ||
132 | static inline void icc_bulk_disable(int num_paths, const struct icc_bulk_data *paths) | |
133 | { | |
134 | } | |
135 | ||
11f1ceca GD |
136 | #endif /* CONFIG_INTERCONNECT */ |
137 | ||
138 | #endif /* __LINUX_INTERCONNECT_H */ |