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