/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright (c) 2018-2019, Linaro Ltd. * Author: Georgi Djakov <georgi.djakov@linaro.org> */ #ifndef __LINUX_INTERCONNECT_H #define __LINUX_INTERCONNECT_H #include <linux/mutex.h> #include <linux/types.h> /* macros for converting to icc units */ #define Bps_to_icc(x) ((x) / 1000) #define kBps_to_icc(x) (x) #define MBps_to_icc(x) ((x) * 1000) #define GBps_to_icc(x) ((x) * 1000 * 1000) #define bps_to_icc(x) (1) #define kbps_to_icc(x) ((x) / 8 + ((x) % 8 ? 1 : 0)) #define Mbps_to_icc(x) ((x) * 1000 / 8) #define Gbps_to_icc(x) ((x) * 1000 * 1000 / 8) struct icc_path; struct device; /** * struct icc_bulk_data - Data used for bulk icc operations. * * @path: reference to the interconnect path (internal use) * @name: the name from the "interconnect-names" DT property * @avg_bw: average bandwidth in icc units * @peak_bw: peak bandwidth in icc units */ struct icc_bulk_data { struct icc_path *path; const char *name; u32 avg_bw; u32 peak_bw; }; int __must_check of_icc_bulk_get(struct device *dev, int num_paths, struct icc_bulk_data *paths); void icc_bulk_put(int num_paths, struct icc_bulk_data *paths); int icc_bulk_set_bw(int num_paths, const struct icc_bulk_data *paths); int icc_bulk_enable(int num_paths, const struct icc_bulk_data *paths); void icc_bulk_disable(int num_paths, const struct icc_bulk_data *paths); #if IS_ENABLED(CONFIG_INTERCONNECT) struct icc_path *icc_get(struct device *dev, const int src_id, const int dst_id); struct icc_path *of_icc_get(struct device *dev, const char *name); struct icc_path *devm_of_icc_get(struct device *dev, const char *name); struct icc_path *of_icc_get_by_index(struct device *dev, int idx); void icc_put(struct icc_path *path); int icc_enable(struct icc_path *path); int icc_disable(struct icc_path *path); int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw); void icc_set_tag(struct icc_path *path, u32 tag); const char *icc_get_name(struct icc_path *path); #else static inline struct icc_path *icc_get(struct device *dev, const int src_id, const int dst_id) { return NULL; } static inline struct icc_path *of_icc_get(struct device *dev, const char *name) { return NULL; } static inline struct icc_path *devm_of_icc_get(struct device *dev, const char *name) { return NULL; } static inline struct icc_path *of_icc_get_by_index(struct device *dev, int idx) { return NULL; } static inline void icc_put(struct icc_path *path) { } static inline int icc_enable(struct icc_path *path) { return 0; } static inline int icc_disable(struct icc_path *path) { return 0; } static inline int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw) { return 0; } static inline void icc_set_tag(struct icc_path *path, u32 tag) { } static inline const char *icc_get_name(struct icc_path *path) { return NULL; } #endif /* CONFIG_INTERCONNECT */ #endif /* __LINUX_INTERCONNECT_H */