mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-11-01 00:48:50 +00:00
127ab2cc5f
Consumers may have use cases with different bandwidth requirements based on the system or driver state. The consumer driver can append a specific tag to the path and pass this information to the interconnect platform driver to do the aggregation based on this state. Introduce icc_set_tag() function that will allow the consumers to append an optional tag to each path. The aggregation of these tagged paths is platform specific. Reviewed-by: Evan Green <evgreen@chromium.org> Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
64 lines
1.5 KiB
C
64 lines
1.5 KiB
C
/* 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;
|
|
|
|
#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);
|
|
void icc_put(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);
|
|
|
|
#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 void icc_put(struct icc_path *path)
|
|
{
|
|
}
|
|
|
|
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)
|
|
{
|
|
}
|
|
|
|
#endif /* CONFIG_INTERCONNECT */
|
|
|
|
#endif /* __LINUX_INTERCONNECT_H */
|