| Svetlin Ankov | 8db0073 | 2016-01-13 14:07:48 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Greybus operations |
| 3 | * |
| 4 | * Copyright 2015-2016 Google Inc. |
| 5 | * |
| 6 | * Released under the GPLv2 only. |
| 7 | */ |
| 8 | |
| 9 | #ifndef _GB_AUDIO_MANAGER_H_ |
| 10 | #define _GB_AUDIO_MANAGER_H_ |
| 11 | |
| 12 | #include <linux/kobject.h> |
| 13 | #include <linux/list.h> |
| 14 | |
| 15 | #define GB_AUDIO_MANAGER_NAME "gb_audio_manager" |
| 16 | #define GB_AUDIO_MANAGER_MODULE_NAME_LEN 64 |
| 17 | #define GB_AUDIO_MANAGER_MODULE_NAME_LEN_SSCANF "63" |
| 18 | |
| 19 | struct gb_audio_manager_module_descriptor { |
| 20 | char name[GB_AUDIO_MANAGER_MODULE_NAME_LEN]; |
| 21 | int slot; |
| 22 | int vid; |
| 23 | int pid; |
| 24 | int cport; |
| Vaibhav Agarwal | a9234bf | 2016-03-30 13:23:55 +0530 | [diff] [blame] | 25 | unsigned int ip_devices; |
| 26 | unsigned int op_devices; |
| Svetlin Ankov | 8db0073 | 2016-01-13 14:07:48 -0700 | [diff] [blame] | 27 | }; |
| 28 | |
| 29 | struct gb_audio_manager_module { |
| 30 | struct kobject kobj; |
| 31 | struct list_head list; |
| 32 | int id; |
| 33 | struct gb_audio_manager_module_descriptor desc; |
| 34 | }; |
| 35 | |
| 36 | /* |
| 37 | * Creates a new gb_audio_manager_module_descriptor, using the specified |
| 38 | * descriptor. |
| 39 | * |
| 40 | * Returns a negative result on error, or the id of the newly created module. |
| 41 | * |
| 42 | */ |
| 43 | int gb_audio_manager_add(struct gb_audio_manager_module_descriptor *desc); |
| 44 | |
| 45 | /* |
| 46 | * Removes a connected gb_audio_manager_module_descriptor for the specified ID. |
| 47 | * |
| 48 | * Returns zero on success, or a negative value on error. |
| 49 | */ |
| 50 | int gb_audio_manager_remove(int id); |
| 51 | |
| 52 | /* |
| 53 | * Removes all connected gb_audio_modules |
| 54 | * |
| 55 | * Returns zero on success, or a negative value on error. |
| 56 | */ |
| 57 | void gb_audio_manager_remove_all(void); |
| 58 | |
| 59 | /* |
| 60 | * Retrieves a gb_audio_manager_module_descriptor for the specified id. |
| 61 | * Returns the gb_audio_manager_module_descriptor structure, |
| 62 | * or NULL if there is no module with the specified ID. |
| 63 | */ |
| 64 | struct gb_audio_manager_module *gb_audio_manager_get_module(int id); |
| 65 | |
| 66 | /* |
| 67 | * Decreases the refcount of the module, obtained by the get function. |
| 68 | * Modules are removed via gb_audio_manager_remove |
| 69 | */ |
| 70 | void gb_audio_manager_put_module(struct gb_audio_manager_module *module); |
| 71 | |
| 72 | /* |
| 73 | * Dumps the module for the specified id |
| 74 | * Return 0 on success |
| 75 | */ |
| 76 | int gb_audio_manager_dump_module(int id); |
| 77 | |
| 78 | /* |
| 79 | * Dumps all connected modules |
| 80 | */ |
| 81 | void gb_audio_manager_dump_all(void); |
| 82 | |
| 83 | #endif /* _GB_AUDIO_MANAGER_H_ */ |