/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Greybus operations
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*
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* Copyright 2015-2016 Google Inc.
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*/
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#ifndef _GB_AUDIO_MANAGER_H_
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#define _GB_AUDIO_MANAGER_H_
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#include <linux/kobject.h>
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#include <linux/list.h>
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#define GB_AUDIO_MANAGER_NAME "gb_audio_manager"
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#define GB_AUDIO_MANAGER_MODULE_NAME_LEN 64
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#define GB_AUDIO_MANAGER_MODULE_NAME_LEN_SSCANF "63"
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struct gb_audio_manager_module_descriptor {
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char name[GB_AUDIO_MANAGER_MODULE_NAME_LEN];
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int vid;
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int pid;
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int intf_id;
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unsigned int ip_devices;
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unsigned int op_devices;
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};
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struct gb_audio_manager_module {
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struct kobject kobj;
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struct list_head list;
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int id;
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struct gb_audio_manager_module_descriptor desc;
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};
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/*
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* Creates a new gb_audio_manager_module_descriptor, using the specified
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* descriptor.
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*
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* Returns a negative result on error, or the id of the newly created module.
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*
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*/
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int gb_audio_manager_add(struct gb_audio_manager_module_descriptor *desc);
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/*
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* Removes a connected gb_audio_manager_module_descriptor for the specified ID.
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*
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* Returns zero on success, or a negative value on error.
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*/
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int gb_audio_manager_remove(int id);
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/*
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* Removes all connected gb_audio_modules
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*
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* Returns zero on success, or a negative value on error.
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*/
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void gb_audio_manager_remove_all(void);
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/*
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* Retrieves a gb_audio_manager_module_descriptor for the specified id.
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* Returns the gb_audio_manager_module_descriptor structure,
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* or NULL if there is no module with the specified ID.
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*/
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struct gb_audio_manager_module *gb_audio_manager_get_module(int id);
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/*
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* Decreases the refcount of the module, obtained by the get function.
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* Modules are removed via gb_audio_manager_remove
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*/
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void gb_audio_manager_put_module(struct gb_audio_manager_module *module);
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/*
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* Dumps the module for the specified id
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* Return 0 on success
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*/
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int gb_audio_manager_dump_module(int id);
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/*
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* Dumps all connected modules
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*/
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void gb_audio_manager_dump_all(void);
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#endif /* _GB_AUDIO_MANAGER_H_ */
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