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