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usb: gadget: fastboot: add ext properties for WCID

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Add device interface GUID for Microsoft Extended Properties Feature
Descriptor.

Signed-off-by: Li Jun <jun.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Li Jun 2021-01-25 21:43:51 +08:00 committed by Marek Vasut
parent 37e4fc3354
commit 8043cf8fbd
1 changed files with 34 additions and 0 deletions
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34
drivers/usb/gadget/f_fastboot.c
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@ -46,6 +46,25 @@ struct f_fastboot {
struct usb_request *in_req, *out_req;
};
static char fb_ext_prop_name[] = "DeviceInterfaceGUID";
static char fb_ext_prop_data[] = "{4866319A-F4D6-4374-93B9-DC2DEB361BA9}";
static struct usb_os_desc_ext_prop fb_ext_prop = {
.type = 1, /* NUL-terminated Unicode String (REG_SZ) */
.name = fb_ext_prop_name,
.data = fb_ext_prop_data,
};
/* 16 bytes of "Compatible ID" and "Subcompatible ID" */
static char fb_cid[16] = {'W', 'I', 'N', 'U', 'S', 'B'};
static struct usb_os_desc fb_os_desc = {
.ext_compat_id = fb_cid,
};
static struct usb_os_desc_table fb_os_desc_table = {
.os_desc = &fb_os_desc,
};
static inline struct f_fastboot *func_to_fastboot(struct usb_function *f)
{
return container_of(f, struct f_fastboot, usb_function);
@ -161,6 +180,19 @@ static int fastboot_bind(struct usb_configuration *c, struct usb_function *f)
return id;
interface_desc.bInterfaceNumber = id;
/* Enable OS and Extended Properties Feature Descriptor */
c->cdev->use_os_string = 1;
f->os_desc_table = &fb_os_desc_table;
f->os_desc_n = 1;
f->os_desc_table->if_id = id;
INIT_LIST_HEAD(&fb_os_desc.ext_prop);
fb_ext_prop.name_len = strlen(fb_ext_prop.name) * 2 + 2;
fb_os_desc.ext_prop_len = 10 + fb_ext_prop.name_len;
fb_os_desc.ext_prop_count = 1;
fb_ext_prop.data_len = strlen(fb_ext_prop.data) * 2 + 2;
fb_os_desc.ext_prop_len += fb_ext_prop.data_len + 4;
list_add_tail(&fb_ext_prop.entry, &fb_os_desc.ext_prop);
id = usb_string_id(c->cdev);
if (id < 0)
return id;
@ -196,6 +228,8 @@ static int fastboot_bind(struct usb_configuration *c, struct usb_function *f)
static void fastboot_unbind(struct usb_configuration *c, struct usb_function *f)
{
f->os_desc_table = NULL;
list_del(&fb_os_desc.ext_prop);
memset(fastboot_func, 0, sizeof(*fastboot_func));
}