https://github.com/torvalds/linux
- HEAD
- refs/heads/arm64-uaccess
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/certifi-2024.7.4
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/idna-3.7
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/requests-2.32.2
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/setuptools-70.0.0
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/urllib3-2.2.2
- refs/heads/master
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Tip revision: e73f0f0ee7541171d89f2e2491130c7771ba58d3 authored by Linus Torvalds on 11 July 2021, 22:07:40 UTC
Linux 5.14-rc1
Linux 5.14-rc1
Tip revision: e73f0f0
iso-resources.h
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef SOUND_FIREWIRE_ISO_RESOURCES_H_INCLUDED
#define SOUND_FIREWIRE_ISO_RESOURCES_H_INCLUDED
#include <linux/mutex.h>
#include <linux/types.h>
struct fw_unit;
/**
* struct fw_iso_resources - manages channel/bandwidth allocation
* @channels_mask: if the device does not support all channel numbers, set this
* bit mask to something else than the default (all ones)
*
* This structure manages (de)allocation of isochronous resources (channel and
* bandwidth) for one isochronous stream.
*/
struct fw_iso_resources {
u64 channels_mask;
/* private: */
struct fw_unit *unit;
struct mutex mutex;
unsigned int channel;
unsigned int bandwidth; /* in bandwidth units, without overhead */
unsigned int bandwidth_overhead;
int generation; /* in which allocation is valid */
bool allocated;
};
int fw_iso_resources_init(struct fw_iso_resources *r,
struct fw_unit *unit);
void fw_iso_resources_destroy(struct fw_iso_resources *r);
int fw_iso_resources_allocate(struct fw_iso_resources *r,
unsigned int max_payload_bytes, int speed);
int fw_iso_resources_update(struct fw_iso_resources *r);
void fw_iso_resources_free(struct fw_iso_resources *r);
#endif