1 /* SPDX-License-Identifier: GPL-2.0 */ 1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* 2 /*
3 * Copyright (c) 2018-2019, Linaro Ltd. 3 * Copyright (c) 2018-2019, Linaro Ltd.
4 * Author: Georgi Djakov <georgi.djakov@linaro 4 * Author: Georgi Djakov <georgi.djakov@linaro.org>
5 */ 5 */
6 6
7 #ifndef __LINUX_INTERCONNECT_H 7 #ifndef __LINUX_INTERCONNECT_H
8 #define __LINUX_INTERCONNECT_H 8 #define __LINUX_INTERCONNECT_H
9 9
10 #include <linux/mutex.h> 10 #include <linux/mutex.h>
11 #include <linux/types.h> 11 #include <linux/types.h>
12 12
13 /* macros for converting to icc units */ 13 /* macros for converting to icc units */
14 #define Bps_to_icc(x) ((x) / 1000) 14 #define Bps_to_icc(x) ((x) / 1000)
15 #define kBps_to_icc(x) (x) 15 #define kBps_to_icc(x) (x)
16 #define MBps_to_icc(x) ((x) * 1000) 16 #define MBps_to_icc(x) ((x) * 1000)
17 #define GBps_to_icc(x) ((x) * 1000 * 1000) 17 #define GBps_to_icc(x) ((x) * 1000 * 1000)
18 #define bps_to_icc(x) (1) 18 #define bps_to_icc(x) (1)
19 #define kbps_to_icc(x) ((x) / 8 + ((x) % 8 ? 19 #define kbps_to_icc(x) ((x) / 8 + ((x) % 8 ? 1 : 0))
20 #define Mbps_to_icc(x) ((x) * 1000 / 8) 20 #define Mbps_to_icc(x) ((x) * 1000 / 8)
21 #define Gbps_to_icc(x) ((x) * 1000 * 1000 / 8 21 #define Gbps_to_icc(x) ((x) * 1000 * 1000 / 8)
22 22
23 struct icc_path; 23 struct icc_path;
24 struct device; 24 struct device;
25 25
26 /** 26 /**
27 * struct icc_bulk_data - Data used for bulk i 27 * struct icc_bulk_data - Data used for bulk icc operations.
28 * 28 *
29 * @path: reference to the interconnect path ( 29 * @path: reference to the interconnect path (internal use)
30 * @name: the name from the "interconnect-name 30 * @name: the name from the "interconnect-names" DT property
31 * @avg_bw: average bandwidth in icc units 31 * @avg_bw: average bandwidth in icc units
32 * @peak_bw: peak bandwidth in icc units 32 * @peak_bw: peak bandwidth in icc units
33 */ 33 */
34 struct icc_bulk_data { 34 struct icc_bulk_data {
35 struct icc_path *path; 35 struct icc_path *path;
36 const char *name; 36 const char *name;
37 u32 avg_bw; 37 u32 avg_bw;
38 u32 peak_bw; 38 u32 peak_bw;
39 }; 39 };
40 40
>> 41 int __must_check of_icc_bulk_get(struct device *dev, int num_paths,
>> 42 struct icc_bulk_data *paths);
>> 43 void icc_bulk_put(int num_paths, struct icc_bulk_data *paths);
>> 44 int icc_bulk_set_bw(int num_paths, const struct icc_bulk_data *paths);
>> 45 int icc_bulk_enable(int num_paths, const struct icc_bulk_data *paths);
>> 46 void icc_bulk_disable(int num_paths, const struct icc_bulk_data *paths);
>> 47
41 #if IS_ENABLED(CONFIG_INTERCONNECT) 48 #if IS_ENABLED(CONFIG_INTERCONNECT)
42 49
>> 50 struct icc_path *icc_get(struct device *dev, const int src_id,
>> 51 const int dst_id);
43 struct icc_path *of_icc_get(struct device *dev 52 struct icc_path *of_icc_get(struct device *dev, const char *name);
44 struct icc_path *devm_of_icc_get(struct device 53 struct icc_path *devm_of_icc_get(struct device *dev, const char *name);
45 int devm_of_icc_bulk_get(struct device *dev, i <<
46 struct icc_path *of_icc_get_by_index(struct de 54 struct icc_path *of_icc_get_by_index(struct device *dev, int idx);
47 void icc_put(struct icc_path *path); 55 void icc_put(struct icc_path *path);
48 int icc_enable(struct icc_path *path); 56 int icc_enable(struct icc_path *path);
49 int icc_disable(struct icc_path *path); 57 int icc_disable(struct icc_path *path);
50 int icc_set_bw(struct icc_path *path, u32 avg_ 58 int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw);
51 void icc_set_tag(struct icc_path *path, u32 ta 59 void icc_set_tag(struct icc_path *path, u32 tag);
52 const char *icc_get_name(struct icc_path *path 60 const char *icc_get_name(struct icc_path *path);
53 int __must_check of_icc_bulk_get(struct device <<
54 struct icc_bu <<
55 void icc_bulk_put(int num_paths, struct icc_bu <<
56 int icc_bulk_set_bw(int num_paths, const struc <<
57 int icc_bulk_enable(int num_paths, const struc <<
58 void icc_bulk_disable(int num_paths, const str <<
59 61
60 #else 62 #else
61 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
62 static inline struct icc_path *of_icc_get(stru 70 static inline struct icc_path *of_icc_get(struct device *dev,
63 cons 71 const char *name)
64 { 72 {
65 return NULL; 73 return NULL;
66 } 74 }
67 75
68 static inline struct icc_path *devm_of_icc_get 76 static inline struct icc_path *devm_of_icc_get(struct device *dev,
69 77 const char *name)
70 { 78 {
71 return NULL; 79 return NULL;
72 } 80 }
73 81
74 static inline struct icc_path *of_icc_get_by_i 82 static inline struct icc_path *of_icc_get_by_index(struct device *dev, int idx)
75 { 83 {
76 return NULL; 84 return NULL;
77 } 85 }
78 86
79 static inline void icc_put(struct icc_path *pa 87 static inline void icc_put(struct icc_path *path)
80 { 88 {
81 } 89 }
82 90
83 static inline int icc_enable(struct icc_path * 91 static inline int icc_enable(struct icc_path *path)
84 { 92 {
85 return 0; 93 return 0;
86 } 94 }
87 95
88 static inline int icc_disable(struct icc_path 96 static inline int icc_disable(struct icc_path *path)
89 { 97 {
90 return 0; 98 return 0;
91 } 99 }
92 100
93 static inline int icc_set_bw(struct icc_path * 101 static inline int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw)
94 { 102 {
95 return 0; 103 return 0;
96 } 104 }
97 105
98 static inline void icc_set_tag(struct icc_path 106 static inline void icc_set_tag(struct icc_path *path, u32 tag)
99 { 107 {
100 } 108 }
101 109
102 static inline const char *icc_get_name(struct 110 static inline const char *icc_get_name(struct icc_path *path)
103 { 111 {
104 return NULL; 112 return NULL;
105 } <<
106 <<
107 static inline int of_icc_bulk_get(struct devic <<
108 { <<
109 return 0; <<
110 } <<
111 <<
112 static inline int devm_of_icc_bulk_get(struct <<
113 struct <<
114 { <<
115 return 0; <<
116 } <<
117 <<
118 static inline void icc_bulk_put(int num_paths, <<
119 { <<
120 } <<
121 <<
122 static inline int icc_bulk_set_bw(int num_path <<
123 { <<
124 return 0; <<
125 } <<
126 <<
127 static inline int icc_bulk_enable(int num_path <<
128 { <<
129 return 0; <<
130 } <<
131 <<
132 static inline void icc_bulk_disable(int num_pa <<
133 { <<
134 } 113 }
135 114
136 #endif /* CONFIG_INTERCONNECT */ 115 #endif /* CONFIG_INTERCONNECT */
137 116
138 #endif /* __LINUX_INTERCONNECT_H */ 117 #endif /* __LINUX_INTERCONNECT_H */
139 118
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