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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); |
2fcfa72f | 47 | int devm_of_icc_bulk_get(struct device *dev, int num_paths, struct icc_bulk_data *paths); |
1597d453 | 48 | struct icc_path *of_icc_get_by_index(struct device *dev, int idx); |
11f1ceca | 49 | void icc_put(struct icc_path *path); |
7d374b20 GD |
50 | int icc_enable(struct icc_path *path); |
51 | int icc_disable(struct icc_path *path); | |
11f1ceca | 52 | int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw); |
127ab2cc | 53 | void icc_set_tag(struct icc_path *path, u32 tag); |
0430b1d5 | 54 | const char *icc_get_name(struct icc_path *path); |
e45f1c1d GD |
55 | int __must_check of_icc_bulk_get(struct device *dev, int num_paths, |
56 | struct icc_bulk_data *paths); | |
57 | void icc_bulk_put(int num_paths, struct icc_bulk_data *paths); | |
58 | int icc_bulk_set_bw(int num_paths, const struct icc_bulk_data *paths); | |
59 | int icc_bulk_enable(int num_paths, const struct icc_bulk_data *paths); | |
60 | void icc_bulk_disable(int num_paths, const struct icc_bulk_data *paths); | |
11f1ceca GD |
61 | |
62 | #else | |
63 | ||
64 | static inline struct icc_path *icc_get(struct device *dev, const int src_id, | |
65 | const int dst_id) | |
66 | { | |
67 | return NULL; | |
68 | } | |
69 | ||
87e3031b GD |
70 | static inline struct icc_path *of_icc_get(struct device *dev, |
71 | const char *name) | |
72 | { | |
73 | return NULL; | |
74 | } | |
75 | ||
e145d9a1 AA |
76 | static inline struct icc_path *devm_of_icc_get(struct device *dev, |
77 | const char *name) | |
78 | { | |
79 | return NULL; | |
80 | } | |
81 | ||
1597d453 GD |
82 | static inline struct icc_path *of_icc_get_by_index(struct device *dev, int idx) |
83 | { | |
84 | return NULL; | |
85 | } | |
86 | ||
11f1ceca GD |
87 | static inline void icc_put(struct icc_path *path) |
88 | { | |
89 | } | |
90 | ||
7d374b20 GD |
91 | static inline int icc_enable(struct icc_path *path) |
92 | { | |
93 | return 0; | |
94 | } | |
95 | ||
96 | static inline int icc_disable(struct icc_path *path) | |
97 | { | |
98 | return 0; | |
99 | } | |
100 | ||
11f1ceca GD |
101 | static inline int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw) |
102 | { | |
103 | return 0; | |
104 | } | |
105 | ||
127ab2cc GD |
106 | static inline void icc_set_tag(struct icc_path *path, u32 tag) |
107 | { | |
108 | } | |
109 | ||
0430b1d5 VK |
110 | static inline const char *icc_get_name(struct icc_path *path) |
111 | { | |
112 | return NULL; | |
113 | } | |
114 | ||
e45f1c1d GD |
115 | static inline int of_icc_bulk_get(struct device *dev, int num_paths, struct icc_bulk_data *paths) |
116 | { | |
117 | return 0; | |
118 | } | |
119 | ||
2fcfa72f PF |
120 | static inline int devm_of_icc_bulk_get(struct device *dev, int num_paths, |
121 | struct icc_bulk_data *paths) | |
122 | { | |
123 | return 0; | |
124 | } | |
125 | ||
e45f1c1d GD |
126 | static inline void icc_bulk_put(int num_paths, struct icc_bulk_data *paths) |
127 | { | |
128 | } | |
129 | ||
130 | static inline int icc_bulk_set_bw(int num_paths, const struct icc_bulk_data *paths) | |
131 | { | |
132 | return 0; | |
133 | } | |
134 | ||
135 | static inline int icc_bulk_enable(int num_paths, const struct icc_bulk_data *paths) | |
136 | { | |
137 | return 0; | |
138 | } | |
139 | ||
140 | static inline void icc_bulk_disable(int num_paths, const struct icc_bulk_data *paths) | |
141 | { | |
142 | } | |
143 | ||
11f1ceca GD |
144 | #endif /* CONFIG_INTERCONNECT */ |
145 | ||
146 | #endif /* __LINUX_INTERCONNECT_H */ |