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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 | ||
43 | struct icc_path *icc_get(struct device *dev, const int src_id, | |
44 | const int dst_id); | |
87e3031b | 45 | struct icc_path *of_icc_get(struct device *dev, const char *name); |
e145d9a1 | 46 | struct icc_path *devm_of_icc_get(struct device *dev, const char *name); |
1597d453 | 47 | struct icc_path *of_icc_get_by_index(struct device *dev, int idx); |
11f1ceca | 48 | void icc_put(struct icc_path *path); |
7d374b20 GD |
49 | int icc_enable(struct icc_path *path); |
50 | int icc_disable(struct icc_path *path); | |
11f1ceca | 51 | int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw); |
127ab2cc | 52 | void icc_set_tag(struct icc_path *path, u32 tag); |
0430b1d5 | 53 | const char *icc_get_name(struct icc_path *path); |
e45f1c1d GD |
54 | int __must_check of_icc_bulk_get(struct device *dev, int num_paths, |
55 | struct icc_bulk_data *paths); | |
56 | void icc_bulk_put(int num_paths, struct icc_bulk_data *paths); | |
57 | int icc_bulk_set_bw(int num_paths, const struct icc_bulk_data *paths); | |
58 | int icc_bulk_enable(int num_paths, const struct icc_bulk_data *paths); | |
59 | void icc_bulk_disable(int num_paths, const struct icc_bulk_data *paths); | |
11f1ceca GD |
60 | |
61 | #else | |
62 | ||
63 | static inline struct icc_path *icc_get(struct device *dev, const int src_id, | |
64 | const int dst_id) | |
65 | { | |
66 | return NULL; | |
67 | } | |
68 | ||
87e3031b GD |
69 | static inline struct icc_path *of_icc_get(struct device *dev, |
70 | const char *name) | |
71 | { | |
72 | return NULL; | |
73 | } | |
74 | ||
e145d9a1 AA |
75 | static inline struct icc_path *devm_of_icc_get(struct device *dev, |
76 | const char *name) | |
77 | { | |
78 | return NULL; | |
79 | } | |
80 | ||
1597d453 GD |
81 | static inline struct icc_path *of_icc_get_by_index(struct device *dev, int idx) |
82 | { | |
83 | return NULL; | |
84 | } | |
85 | ||
11f1ceca GD |
86 | static inline void icc_put(struct icc_path *path) |
87 | { | |
88 | } | |
89 | ||
7d374b20 GD |
90 | static inline int icc_enable(struct icc_path *path) |
91 | { | |
92 | return 0; | |
93 | } | |
94 | ||
95 | static inline int icc_disable(struct icc_path *path) | |
96 | { | |
97 | return 0; | |
98 | } | |
99 | ||
11f1ceca GD |
100 | static inline int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw) |
101 | { | |
102 | return 0; | |
103 | } | |
104 | ||
127ab2cc GD |
105 | static inline void icc_set_tag(struct icc_path *path, u32 tag) |
106 | { | |
107 | } | |
108 | ||
0430b1d5 VK |
109 | static inline const char *icc_get_name(struct icc_path *path) |
110 | { | |
111 | return NULL; | |
112 | } | |
113 | ||
e45f1c1d GD |
114 | static inline int of_icc_bulk_get(struct device *dev, int num_paths, struct icc_bulk_data *paths) |
115 | { | |
116 | return 0; | |
117 | } | |
118 | ||
119 | static inline void icc_bulk_put(int num_paths, struct icc_bulk_data *paths) | |
120 | { | |
121 | } | |
122 | ||
123 | static inline int icc_bulk_set_bw(int num_paths, const struct icc_bulk_data *paths) | |
124 | { | |
125 | return 0; | |
126 | } | |
127 | ||
128 | static inline int icc_bulk_enable(int num_paths, const struct icc_bulk_data *paths) | |
129 | { | |
130 | return 0; | |
131 | } | |
132 | ||
133 | static inline void icc_bulk_disable(int num_paths, const struct icc_bulk_data *paths) | |
134 | { | |
135 | } | |
136 | ||
11f1ceca GD |
137 | #endif /* CONFIG_INTERCONNECT */ |
138 | ||
139 | #endif /* __LINUX_INTERCONNECT_H */ |