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 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 void icc_put(struct icc_path *path); 32 int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw); 33 void icc_set_tag(struct icc_path *path, u32 tag); 34 35 #else 36 37 static inline struct icc_path *icc_get(struct device *dev, const int src_id, 38 const int dst_id) 39 { 40 return NULL; 41 } 42 43 static inline struct icc_path *of_icc_get(struct device *dev, 44 const char *name) 45 { 46 return NULL; 47 } 48 49 static inline void icc_put(struct icc_path *path) 50 { 51 } 52 53 static inline int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw) 54 { 55 return 0; 56 } 57 58 static inline void icc_set_tag(struct icc_path *path, u32 tag) 59 { 60 } 61 62 #endif /* CONFIG_INTERCONNECT */ 63 64 #endif /* __LINUX_INTERCONNECT_H */ 65