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Subject[PATCHv4 3/6] usb: gadget: f_fs: add usb_functionfs_descs_head_v2 structure
Date
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 = {

}
};

Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
---
include/uapi/linux/usb/functionfs.h | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/include/uapi/linux/usb/functionfs.h b/include/uapi/linux/usb/functionfs.h
index 24b68c5..2592d86 100644
--- a/include/uapi/linux/usb/functionfs.h
+++ b/include/uapi/linux/usb/functionfs.h
@@ -33,6 +33,16 @@ struct usb_endpoint_descriptor_no_audio {
__u8 bInterval;
} __attribute__((packed));

+struct usb_functionfs_descs_head_v2 {
+ __le32 magic;
+ __le32 length;
+ __le32 flags;
+ /*
+ * __le32 fs_count, hs_count, fs_count; must be included manually in
+ * the structure taking flags into consideration.
+ */
+} __attribute__((packed));
+
/* Legacy format, deprecated as of 3.14. */
struct usb_functionfs_descs_head {
__le32 magic;
--
2.0.0.526.g5318336
--
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