forked from mirrors/linux
87e3031b6f
Currently we support only platform data for specifying the interconnect endpoints. As now the endpoints are hard-coded into the consumer driver this may lead to complications when a single driver is used by multiple SoCs, which may have different interconnect topology. To avoid cluttering the consumer drivers, introduce a translation function to help us get the board specific interconnect data from device-tree. Reviewed-by: Evan Green <evgreen@chromium.org> Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
59 lines
1.4 KiB
C
59 lines
1.4 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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#if IS_ENABLED(CONFIG_INTERCONNECT)
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struct icc_path *icc_get(struct device *dev, const int src_id,
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const int dst_id);
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struct icc_path *of_icc_get(struct device *dev, const char *name);
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void icc_put(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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#else
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static inline struct icc_path *icc_get(struct device *dev, const int src_id,
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const int dst_id)
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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(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 void icc_put(struct icc_path *path)
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{
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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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#endif /* CONFIG_INTERCONNECT */
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#endif /* __LINUX_INTERCONNECT_H */
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