diff options
Diffstat (limited to 'original/uapi/linux/usb/functionfs.h')
| -rw-r--r-- | original/uapi/linux/usb/functionfs.h | 41 |
1 files changed, 32 insertions, 9 deletions
diff --git a/original/uapi/linux/usb/functionfs.h b/original/uapi/linux/usb/functionfs.h index d6b0128..24b68c5 100644 --- a/original/uapi/linux/usb/functionfs.h +++ b/original/uapi/linux/usb/functionfs.h @@ -10,9 +10,15 @@ enum { FUNCTIONFS_DESCRIPTORS_MAGIC = 1, - FUNCTIONFS_STRINGS_MAGIC = 2 + FUNCTIONFS_STRINGS_MAGIC = 2, + FUNCTIONFS_DESCRIPTORS_MAGIC_V2 = 3, }; +enum functionfs_flags { + FUNCTIONFS_HAS_FS_DESC = 1, + FUNCTIONFS_HAS_HS_DESC = 2, + FUNCTIONFS_HAS_SS_DESC = 4, +}; #ifndef __KERNEL__ @@ -27,31 +33,48 @@ struct usb_endpoint_descriptor_no_audio { __u8 bInterval; } __attribute__((packed)); - -/* - * All numbers must be in little endian order. - */ - +/* Legacy format, deprecated as of 3.14. */ struct usb_functionfs_descs_head { __le32 magic; __le32 length; __le32 fs_count; __le32 hs_count; -} __attribute__((packed)); +} __attribute__((packed, deprecated)); /* * Descriptors format: * * | off | name | type | description | * |-----+-----------+--------------+--------------------------------------| - * | 0 | magic | LE32 | FUNCTIONFS_{FS,HS}_DESCRIPTORS_MAGIC | + * | 0 | magic | LE32 | FUNCTIONFS_DESCRIPTORS_MAGIC_V2 | + * | 4 | length | LE32 | length of the whole data chunk | + * | 8 | flags | LE32 | combination of functionfs_flags | + * | | fs_count | LE32 | number of full-speed descriptors | + * | | hs_count | LE32 | number of high-speed descriptors | + * | | ss_count | LE32 | number of super-speed descriptors | + * | | fs_descrs | Descriptor[] | list of full-speed descriptors | + * | | hs_descrs | Descriptor[] | list of high-speed descriptors | + * | | ss_descrs | Descriptor[] | list of super-speed descriptors | + * + * Depending on which flags are set, various fields may be missing in the + * structure. Any flags that are not recognised cause the whole block to be + * rejected with -ENOSYS. + * + * Legacy descriptors format: + * + * | off | name | type | description | + * |-----+-----------+--------------+--------------------------------------| + * | 0 | magic | LE32 | FUNCTIONFS_DESCRIPTORS_MAGIC | * | 4 | length | LE32 | length of the whole data chunk | * | 8 | fs_count | LE32 | number of full-speed descriptors | * | 12 | hs_count | LE32 | number of high-speed descriptors | * | 16 | fs_descrs | Descriptor[] | list of full-speed descriptors | * | | hs_descrs | Descriptor[] | list of high-speed descriptors | * - * descs are just valid USB descriptors and have the following format: + * All numbers must be in little endian order. + * + * Descriptor[] is an array of valid USB descriptors which have the following + * format: * * | off | name | type | description | * |-----+-----------------+------+--------------------------| |