USB_STRING_IDS_TAB(9) Kernel Mode Gadget API USB_STRING_IDS_TAB(9)NAME
usb_string_ids_tab - allocate unused string IDs in batch
SYNOPSIS
int usb_string_ids_tab(struct usb_composite_dev * cdev, struct usb_string * str);
ARGUMENTS
cdev
the device whose string descriptor IDs are being allocated
str
an array of usb_string objects to assign numbers to
CONTEXT
single threaded during gadget setup
DESCRIPTION
usb_string_ids() is called from bind callbacks to allocate string IDs. Drivers for functions, configurations, or gadgets will then copy IDs
from the string table to the appropriate descriptors and string table for other languages.
All string identifier should be allocated using this, usb_string_id() or usb_string_ids_n() routine, to ensure that for example different
functions don't wrongly assign different meanings to the same identifier.
AUTHOR
David Brownell <dbrownell@users.sourceforge.net>
Author.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 USB_STRING_IDS_TAB(9)
Check Out this Related Man Page
USB_GSTRINGS_ATTACH(9) Kernel Mode Gadget API USB_GSTRINGS_ATTACH(9)NAME
usb_gstrings_attach - attach gadget strings to a cdev and assign ids
SYNOPSIS
struct usb_string * usb_gstrings_attach(struct usb_composite_dev * cdev, struct usb_gadget_strings ** sp, unsigned n_strings);
ARGUMENTS
cdev
the device whose string descriptor IDs are being allocated and attached.
sp
an array of usb_gadget_strings to attach.
n_strings
number of entries in each usb_strings array (sp[]->strings)
DESCRIPTION
This function will create a deep copy of usb_gadget_strings and usb_string and attach it to the cdev. The actual string (usb_string.s) will
not be copied but only a referenced will be made. The struct usb_gadget_strings array may contain multiple languges and should be NULL
terminated. The ->language pointer of each struct usb_gadget_strings has to contain the same amount of entries.
FOR INSTANCE
sp[0] is en-US, sp[1] is es-ES. It is expected that the first usb_string entry of es-ES containts the translation of the first usb_string
entry of en-US. Therefore both entries become the same id assign.
AUTHOR
David Brownell <dbrownell@users.sourceforge.net>
Author.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 USB_GSTRINGS_ATTACH(9)
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