Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
40 lines
1.2 KiB
C
40 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef SOUND_FIREWIRE_ISO_RESOURCES_H_INCLUDED
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#define SOUND_FIREWIRE_ISO_RESOURCES_H_INCLUDED
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#include <linux/mutex.h>
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#include <linux/types.h>
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struct fw_unit;
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/**
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* struct fw_iso_resources - manages channel/bandwidth allocation
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* @channels_mask: if the device does not support all channel numbers, set this
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* bit mask to something else than the default (all ones)
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*
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* This structure manages (de)allocation of isochronous resources (channel and
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* bandwidth) for one isochronous stream.
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*/
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struct fw_iso_resources {
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u64 channels_mask;
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/* private: */
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struct fw_unit *unit;
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struct mutex mutex;
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unsigned int channel;
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unsigned int bandwidth; /* in bandwidth units, without overhead */
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unsigned int bandwidth_overhead;
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int generation; /* in which allocation is valid */
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bool allocated;
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};
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int fw_iso_resources_init(struct fw_iso_resources *r,
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struct fw_unit *unit);
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void fw_iso_resources_destroy(struct fw_iso_resources *r);
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int fw_iso_resources_allocate(struct fw_iso_resources *r,
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unsigned int max_payload_bytes, int speed);
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int fw_iso_resources_update(struct fw_iso_resources *r);
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void fw_iso_resources_free(struct fw_iso_resources *r);
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#endif
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