1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright (c) 2018-2019, Linaro Ltd. 4 * Author: Georgi Djakov <[email protected]> 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 26 #if IS_ENABLED(CONFIG_INTERCONNECT) 27 28 struct icc_path *icc_get(struct device *dev, const int src_id, 29 const int dst_id); 30 struct icc_path *of_icc_get(struct device *dev, const char *name); 31 struct icc_path *devm_of_icc_get(struct device *dev, const char *name); 32 void icc_put(struct icc_path *path); 33 int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw); 34 void icc_set_tag(struct icc_path *path, u32 tag); 35 36 #else 37 38 static inline struct icc_path *icc_get(struct device *dev, const int src_id, 39 const int dst_id) 40 { 41 return NULL; 42 } 43 44 static inline struct icc_path *of_icc_get(struct device *dev, 45 const char *name) 46 { 47 return NULL; 48 } 49 50 static inline struct icc_path *devm_of_icc_get(struct device *dev, 51 const char *name) 52 { 53 return NULL; 54 } 55 56 static inline void icc_put(struct icc_path *path) 57 { 58 } 59 60 static inline int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw) 61 { 62 return 0; 63 } 64 65 static inline void icc_set_tag(struct icc_path *path, u32 tag) 66 { 67 } 68 69 #endif /* CONFIG_INTERCONNECT */ 70 71 #endif /* __LINUX_INTERCONNECT_H */ 72