usb: gadget: f_fs: add usb_functionfs_descs_head_v2 structure

The structure can be used with user space tools that use the new functionfs description format, for example as follows: static const struct { struct usb_functionfs_descs_head_v2 header; __le32 fs_count; __le32 hs_count; struct { … } fs_desc; struct { … } hs_desc; } descriptors = { .header = { .magic = cpu_to_le32(FUNCTIONFS_DESCRIPTORS_MAGIC_V2), .length = cpu_to_le32(sizeof(descriptors)), .flags = cpu_to_le32(FUNCTIONFS_HAS_FS_DESC | FUNCTIONFS_HAS_HS_DESC) }, .fs_count = cpu_to_le32(X), .fs_desc = { … }, .hs_count = cpu_to_le32(Y), .hs_desc = { … } };

Michal Nazarewicz committed 12 years ago

Commit 1df22b41 parent be0a8881 file · +10 −0Browse files

Showing the changes to include/uapi/linux (1 of 1 file). Show all

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include/uapi/linux/usb/functionfs.h+10−0

@@ -32,6 +32,16 @@ struct usb_endpoint_descriptor_no_audio { · 31 unmodified lines
32	32	__u8 bInterval;
33	33	} __attribute__((packed));
34	34
	35	+struct usb_functionfs_descs_head_v2 {
	36	+ __le32 magic;
	37	+ __le32 length;
	38	+ __le32 flags;
	39	+ /*
	40	+ * __le32 fs_count, hs_count, fs_count; must be included manually in
	41	+ * the structure taking flags into consideration.
	42	+ */
	43	+} __attribute__((packed));
	44	+
35	45	/* Legacy format, deprecated as of 3.14. */
36	46	struct usb_functionfs_descs_head {
37	47	__le32 magic;