648 строки
25 KiB
C
648 строки
25 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* composite.h -- framework for usb gadgets which are composite devices
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*
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* Copyright (C) 2006-2008 David Brownell
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __LINUX_USB_COMPOSITE_H
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#define __LINUX_USB_COMPOSITE_H
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/*
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* This framework is an optional layer on top of the USB Gadget interface,
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* making it easier to build (a) Composite devices, supporting multiple
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* functions within any single configuration, and (b) Multi-configuration
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* devices, also supporting multiple functions but without necessarily
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* having more than one function per configuration.
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*
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* Example: a device with a single configuration supporting both network
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* link and mass storage functions is a composite device. Those functions
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* might alternatively be packaged in individual configurations, but in
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* the composite model the host can use both functions at the same time.
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*/
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#include <linux/bcd.h>
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#include <linux/version.h>
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#include <linux/usb/ch9.h>
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#include <linux/usb/gadget.h>
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#include <linux/log2.h>
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#include <linux/configfs.h>
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/*
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* USB function drivers should return USB_GADGET_DELAYED_STATUS if they
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* wish to delay the data/status stages of the control transfer till they
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* are ready. The control transfer will then be kept from completing till
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* all the function drivers that requested for USB_GADGET_DELAYED_STAUS
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* invoke usb_composite_setup_continue().
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*/
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#define USB_GADGET_DELAYED_STATUS 0x7fff /* Impossibly large value */
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/* big enough to hold our biggest descriptor */
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#define USB_COMP_EP0_BUFSIZ 4096
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/* OS feature descriptor length <= 4kB */
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#define USB_COMP_EP0_OS_DESC_BUFSIZ 4096
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#define USB_MS_TO_HS_INTERVAL(x) (ilog2((x * 1000 / 125)) + 1)
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struct usb_configuration;
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/**
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* struct usb_os_desc_ext_prop - describes one "Extended Property"
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* @entry: used to keep a list of extended properties
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* @type: Extended Property type
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* @name_len: Extended Property unicode name length, including terminating '\0'
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* @name: Extended Property name
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* @data_len: Length of Extended Property blob (for unicode store double len)
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* @data: Extended Property blob
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* @item: Represents this Extended Property in configfs
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*/
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struct usb_os_desc_ext_prop {
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struct list_head entry;
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u8 type;
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int name_len;
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char *name;
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int data_len;
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char *data;
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struct config_item item;
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};
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/**
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* struct usb_os_desc - describes OS descriptors associated with one interface
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* @ext_compat_id: 16 bytes of "Compatible ID" and "Subcompatible ID"
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* @ext_prop: Extended Properties list
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* @ext_prop_len: Total length of Extended Properties blobs
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* @ext_prop_count: Number of Extended Properties
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* @opts_mutex: Optional mutex protecting config data of a usb_function_instance
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* @group: Represents OS descriptors associated with an interface in configfs
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* @owner: Module associated with this OS descriptor
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*/
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struct usb_os_desc {
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char *ext_compat_id;
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struct list_head ext_prop;
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int ext_prop_len;
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int ext_prop_count;
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struct mutex *opts_mutex;
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struct config_group group;
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struct module *owner;
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};
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/**
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* struct usb_os_desc_table - describes OS descriptors associated with one
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* interface of a usb_function
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* @if_id: Interface id
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* @os_desc: "Extended Compatibility ID" and "Extended Properties" of the
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* interface
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*
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* Each interface can have at most one "Extended Compatibility ID" and a
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* number of "Extended Properties".
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*/
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struct usb_os_desc_table {
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int if_id;
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struct usb_os_desc *os_desc;
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};
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/**
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* struct usb_function - describes one function of a configuration
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* @name: For diagnostics, identifies the function.
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* @strings: tables of strings, keyed by identifiers assigned during bind()
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* and by language IDs provided in control requests
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* @fs_descriptors: Table of full (or low) speed descriptors, using interface and
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* string identifiers assigned during @bind(). If this pointer is null,
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* the function will not be available at full speed (or at low speed).
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* @hs_descriptors: Table of high speed descriptors, using interface and
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* string identifiers assigned during @bind(). If this pointer is null,
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* the function will not be available at high speed.
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* @ss_descriptors: Table of super speed descriptors, using interface and
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* string identifiers assigned during @bind(). If this
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* pointer is null after initiation, the function will not
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* be available at super speed.
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* @ssp_descriptors: Table of super speed plus descriptors, using
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* interface and string identifiers assigned during @bind(). If
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* this pointer is null after initiation, the function will not
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* be available at super speed plus.
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* @config: assigned when @usb_add_function() is called; this is the
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* configuration with which this function is associated.
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* @os_desc_table: Table of (interface id, os descriptors) pairs. The function
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* can expose more than one interface. If an interface is a member of
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* an IAD, only the first interface of IAD has its entry in the table.
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* @os_desc_n: Number of entries in os_desc_table
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* @bind: Before the gadget can register, all of its functions bind() to the
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* available resources including string and interface identifiers used
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* in interface or class descriptors; endpoints; I/O buffers; and so on.
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* @unbind: Reverses @bind; called as a side effect of unregistering the
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* driver which added this function.
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* @free_func: free the struct usb_function.
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* @mod: (internal) points to the module that created this structure.
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* @set_alt: (REQUIRED) Reconfigures altsettings; function drivers may
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* initialize usb_ep.driver data at this time (when it is used).
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* Note that setting an interface to its current altsetting resets
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* interface state, and that all interfaces have a disabled state.
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* @get_alt: Returns the active altsetting. If this is not provided,
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* then only altsetting zero is supported.
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* @disable: (REQUIRED) Indicates the function should be disabled. Reasons
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* include host resetting or reconfiguring the gadget, and disconnection.
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* @setup: Used for interface-specific control requests.
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* @req_match: Tests if a given class request can be handled by this function.
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* @suspend: Notifies functions when the host stops sending USB traffic.
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* @resume: Notifies functions when the host restarts USB traffic.
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* @get_status: Returns function status as a reply to
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* GetStatus() request when the recipient is Interface.
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* @func_suspend: callback to be called when
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* SetFeature(FUNCTION_SUSPEND) is reseived
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*
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* A single USB function uses one or more interfaces, and should in most
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* cases support operation at both full and high speeds. Each function is
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* associated by @usb_add_function() with a one configuration; that function
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* causes @bind() to be called so resources can be allocated as part of
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* setting up a gadget driver. Those resources include endpoints, which
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* should be allocated using @usb_ep_autoconfig().
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*
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* To support dual speed operation, a function driver provides descriptors
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* for both high and full speed operation. Except in rare cases that don't
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* involve bulk endpoints, each speed needs different endpoint descriptors.
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*
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* Function drivers choose their own strategies for managing instance data.
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* The simplest strategy just declares it "static', which means the function
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* can only be activated once. If the function needs to be exposed in more
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* than one configuration at a given speed, it needs to support multiple
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* usb_function structures (one for each configuration).
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*
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* A more complex strategy might encapsulate a @usb_function structure inside
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* a driver-specific instance structure to allows multiple activations. An
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* example of multiple activations might be a CDC ACM function that supports
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* two or more distinct instances within the same configuration, providing
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* several independent logical data links to a USB host.
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*/
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struct usb_function {
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const char *name;
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struct usb_gadget_strings **strings;
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struct usb_descriptor_header **fs_descriptors;
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struct usb_descriptor_header **hs_descriptors;
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struct usb_descriptor_header **ss_descriptors;
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struct usb_descriptor_header **ssp_descriptors;
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struct usb_configuration *config;
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struct usb_os_desc_table *os_desc_table;
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unsigned os_desc_n;
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/* REVISIT: bind() functions can be marked __init, which
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* makes trouble for section mismatch analysis. See if
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* we can't restructure things to avoid mismatching.
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* Related: unbind() may kfree() but bind() won't...
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*/
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/* configuration management: bind/unbind */
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int (*bind)(struct usb_configuration *,
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struct usb_function *);
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void (*unbind)(struct usb_configuration *,
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struct usb_function *);
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void (*free_func)(struct usb_function *f);
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struct module *mod;
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/* runtime state management */
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int (*set_alt)(struct usb_function *,
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unsigned interface, unsigned alt);
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int (*get_alt)(struct usb_function *,
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unsigned interface);
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void (*disable)(struct usb_function *);
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int (*setup)(struct usb_function *,
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const struct usb_ctrlrequest *);
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bool (*req_match)(struct usb_function *,
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const struct usb_ctrlrequest *,
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bool config0);
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void (*suspend)(struct usb_function *);
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void (*resume)(struct usb_function *);
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/* USB 3.0 additions */
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int (*get_status)(struct usb_function *);
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int (*func_suspend)(struct usb_function *,
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u8 suspend_opt);
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/* private: */
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/* internals */
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struct list_head list;
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DECLARE_BITMAP(endpoints, 32);
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const struct usb_function_instance *fi;
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unsigned int bind_deactivated:1;
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};
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int usb_add_function(struct usb_configuration *, struct usb_function *);
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int usb_function_deactivate(struct usb_function *);
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int usb_function_activate(struct usb_function *);
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int usb_interface_id(struct usb_configuration *, struct usb_function *);
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int config_ep_by_speed_and_alt(struct usb_gadget *g, struct usb_function *f,
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struct usb_ep *_ep, u8 alt);
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int config_ep_by_speed(struct usb_gadget *g, struct usb_function *f,
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struct usb_ep *_ep);
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#define MAX_CONFIG_INTERFACES 16 /* arbitrary; max 255 */
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/**
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* struct usb_configuration - represents one gadget configuration
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* @label: For diagnostics, describes the configuration.
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* @strings: Tables of strings, keyed by identifiers assigned during @bind()
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* and by language IDs provided in control requests.
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* @descriptors: Table of descriptors preceding all function descriptors.
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* Examples include OTG and vendor-specific descriptors.
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* @unbind: Reverses @bind; called as a side effect of unregistering the
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* driver which added this configuration.
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* @setup: Used to delegate control requests that aren't handled by standard
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* device infrastructure or directed at a specific interface.
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* @bConfigurationValue: Copied into configuration descriptor.
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* @iConfiguration: Copied into configuration descriptor.
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* @bmAttributes: Copied into configuration descriptor.
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* @MaxPower: Power consumption in mA. Used to compute bMaxPower in the
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* configuration descriptor after considering the bus speed.
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* @cdev: assigned by @usb_add_config() before calling @bind(); this is
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* the device associated with this configuration.
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*
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* Configurations are building blocks for gadget drivers structured around
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* function drivers. Simple USB gadgets require only one function and one
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* configuration, and handle dual-speed hardware by always providing the same
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* functionality. Slightly more complex gadgets may have more than one
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* single-function configuration at a given speed; or have configurations
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* that only work at one speed.
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*
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* Composite devices are, by definition, ones with configurations which
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* include more than one function.
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*
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* The lifecycle of a usb_configuration includes allocation, initialization
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* of the fields described above, and calling @usb_add_config() to set up
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* internal data and bind it to a specific device. The configuration's
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* @bind() method is then used to initialize all the functions and then
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* call @usb_add_function() for them.
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*
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* Those functions would normally be independent of each other, but that's
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* not mandatory. CDC WMC devices are an example where functions often
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* depend on other functions, with some functions subsidiary to others.
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* Such interdependency may be managed in any way, so long as all of the
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* descriptors complete by the time the composite driver returns from
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* its bind() routine.
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*/
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struct usb_configuration {
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const char *label;
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struct usb_gadget_strings **strings;
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const struct usb_descriptor_header **descriptors;
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/* REVISIT: bind() functions can be marked __init, which
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* makes trouble for section mismatch analysis. See if
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* we can't restructure things to avoid mismatching...
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*/
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/* configuration management: unbind/setup */
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void (*unbind)(struct usb_configuration *);
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int (*setup)(struct usb_configuration *,
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const struct usb_ctrlrequest *);
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/* fields in the config descriptor */
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u8 bConfigurationValue;
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u8 iConfiguration;
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u8 bmAttributes;
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u16 MaxPower;
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struct usb_composite_dev *cdev;
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/* private: */
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/* internals */
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struct list_head list;
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struct list_head functions;
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u8 next_interface_id;
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unsigned superspeed:1;
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unsigned highspeed:1;
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unsigned fullspeed:1;
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unsigned superspeed_plus:1;
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struct usb_function *interface[MAX_CONFIG_INTERFACES];
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};
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int usb_add_config(struct usb_composite_dev *,
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struct usb_configuration *,
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int (*)(struct usb_configuration *));
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void usb_remove_config(struct usb_composite_dev *,
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struct usb_configuration *);
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/* predefined index for usb_composite_driver */
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enum {
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USB_GADGET_MANUFACTURER_IDX = 0,
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USB_GADGET_PRODUCT_IDX,
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USB_GADGET_SERIAL_IDX,
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USB_GADGET_FIRST_AVAIL_IDX,
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};
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/**
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* struct usb_composite_driver - groups configurations into a gadget
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* @name: For diagnostics, identifies the driver.
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* @dev: Template descriptor for the device, including default device
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* identifiers.
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* @strings: tables of strings, keyed by identifiers assigned during @bind
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* and language IDs provided in control requests. Note: The first entries
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* are predefined. The first entry that may be used is
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* USB_GADGET_FIRST_AVAIL_IDX
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* @max_speed: Highest speed the driver supports.
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* @needs_serial: set to 1 if the gadget needs userspace to provide
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* a serial number. If one is not provided, warning will be printed.
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* @bind: (REQUIRED) Used to allocate resources that are shared across the
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* whole device, such as string IDs, and add its configurations using
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* @usb_add_config(). This may fail by returning a negative errno
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* value; it should return zero on successful initialization.
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* @unbind: Reverses @bind; called as a side effect of unregistering
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* this driver.
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* @disconnect: optional driver disconnect method
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* @suspend: Notifies when the host stops sending USB traffic,
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* after function notifications
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* @resume: Notifies configuration when the host restarts USB traffic,
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* before function notifications
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* @gadget_driver: Gadget driver controlling this driver
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*
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* Devices default to reporting self powered operation. Devices which rely
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* on bus powered operation should report this in their @bind method.
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*
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* Before returning from @bind, various fields in the template descriptor
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* may be overridden. These include the idVendor/idProduct/bcdDevice values
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* normally to bind the appropriate host side driver, and the three strings
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* (iManufacturer, iProduct, iSerialNumber) normally used to provide user
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* meaningful device identifiers. (The strings will not be defined unless
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* they are defined in @dev and @strings.) The correct ep0 maxpacket size
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* is also reported, as defined by the underlying controller driver.
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*/
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struct usb_composite_driver {
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const char *name;
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const struct usb_device_descriptor *dev;
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struct usb_gadget_strings **strings;
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enum usb_device_speed max_speed;
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unsigned needs_serial:1;
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int (*bind)(struct usb_composite_dev *cdev);
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int (*unbind)(struct usb_composite_dev *);
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void (*disconnect)(struct usb_composite_dev *);
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/* global suspend hooks */
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void (*suspend)(struct usb_composite_dev *);
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void (*resume)(struct usb_composite_dev *);
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struct usb_gadget_driver gadget_driver;
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};
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extern int usb_composite_probe(struct usb_composite_driver *driver);
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extern void usb_composite_unregister(struct usb_composite_driver *driver);
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/**
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* module_usb_composite_driver() - Helper macro for registering a USB gadget
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* composite driver
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* @__usb_composite_driver: usb_composite_driver struct
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*
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* Helper macro for USB gadget composite drivers which do not do anything
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* special in module init/exit. This eliminates a lot of boilerplate. Each
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* module may only use this macro once, and calling it replaces module_init()
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* and module_exit()
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*/
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#define module_usb_composite_driver(__usb_composite_driver) \
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module_driver(__usb_composite_driver, usb_composite_probe, \
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usb_composite_unregister)
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extern void usb_composite_setup_continue(struct usb_composite_dev *cdev);
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extern int composite_dev_prepare(struct usb_composite_driver *composite,
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struct usb_composite_dev *cdev);
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extern int composite_os_desc_req_prepare(struct usb_composite_dev *cdev,
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struct usb_ep *ep0);
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void composite_dev_cleanup(struct usb_composite_dev *cdev);
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static inline struct usb_composite_driver *to_cdriver(
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struct usb_gadget_driver *gdrv)
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{
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return container_of(gdrv, struct usb_composite_driver, gadget_driver);
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}
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#define OS_STRING_QW_SIGN_LEN 14
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#define OS_STRING_IDX 0xEE
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/**
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* struct usb_composite_dev - represents one composite usb gadget
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* @gadget: read-only, abstracts the gadget's usb peripheral controller
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* @req: used for control responses; buffer is pre-allocated
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* @os_desc_req: used for OS descriptors responses; buffer is pre-allocated
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* @config: the currently active configuration
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* @qw_sign: qwSignature part of the OS string
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* @b_vendor_code: bMS_VendorCode part of the OS string
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* @use_os_string: false by default, interested gadgets set it
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* @os_desc_config: the configuration to be used with OS descriptors
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* @setup_pending: true when setup request is queued but not completed
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* @os_desc_pending: true when os_desc request is queued but not completed
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*
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* One of these devices is allocated and initialized before the
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* associated device driver's bind() is called.
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*
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* OPEN ISSUE: it appears that some WUSB devices will need to be
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* built by combining a normal (wired) gadget with a wireless one.
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* This revision of the gadget framework should probably try to make
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* sure doing that won't hurt too much.
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*
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* One notion for how to handle Wireless USB devices involves:
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*
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* (a) a second gadget here, discovery mechanism TBD, but likely
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* needing separate "register/unregister WUSB gadget" calls;
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* (b) updates to usb_gadget to include flags "is it wireless",
|
|
* "is it wired", plus (presumably in a wrapper structure)
|
|
* bandgroup and PHY info;
|
|
* (c) presumably a wireless_ep wrapping a usb_ep, and reporting
|
|
* wireless-specific parameters like maxburst and maxsequence;
|
|
* (d) configurations that are specific to wireless links;
|
|
* (e) function drivers that understand wireless configs and will
|
|
* support wireless for (additional) function instances;
|
|
* (f) a function to support association setup (like CBAF), not
|
|
* necessarily requiring a wireless adapter;
|
|
* (g) composite device setup that can create one or more wireless
|
|
* configs, including appropriate association setup support;
|
|
* (h) more, TBD.
|
|
*/
|
|
struct usb_composite_dev {
|
|
struct usb_gadget *gadget;
|
|
struct usb_request *req;
|
|
struct usb_request *os_desc_req;
|
|
|
|
struct usb_configuration *config;
|
|
|
|
/* OS String is a custom (yet popular) extension to the USB standard. */
|
|
u8 qw_sign[OS_STRING_QW_SIGN_LEN];
|
|
u8 b_vendor_code;
|
|
struct usb_configuration *os_desc_config;
|
|
unsigned int use_os_string:1;
|
|
|
|
/* private: */
|
|
/* internals */
|
|
unsigned int suspended:1;
|
|
struct usb_device_descriptor desc;
|
|
struct list_head configs;
|
|
struct list_head gstrings;
|
|
struct usb_composite_driver *driver;
|
|
u8 next_string_id;
|
|
char *def_manufacturer;
|
|
|
|
/* the gadget driver won't enable the data pullup
|
|
* while the deactivation count is nonzero.
|
|
*/
|
|
unsigned deactivations;
|
|
|
|
/* the composite driver won't complete the control transfer's
|
|
* data/status stages till delayed_status is zero.
|
|
*/
|
|
int delayed_status;
|
|
|
|
/* protects deactivations and delayed_status counts*/
|
|
spinlock_t lock;
|
|
|
|
/* public: */
|
|
unsigned int setup_pending:1;
|
|
unsigned int os_desc_pending:1;
|
|
};
|
|
|
|
extern int usb_string_id(struct usb_composite_dev *c);
|
|
extern int usb_string_ids_tab(struct usb_composite_dev *c,
|
|
struct usb_string *str);
|
|
extern struct usb_string *usb_gstrings_attach(struct usb_composite_dev *cdev,
|
|
struct usb_gadget_strings **sp, unsigned n_strings);
|
|
|
|
extern int usb_string_ids_n(struct usb_composite_dev *c, unsigned n);
|
|
|
|
extern void composite_disconnect(struct usb_gadget *gadget);
|
|
extern void composite_reset(struct usb_gadget *gadget);
|
|
|
|
extern int composite_setup(struct usb_gadget *gadget,
|
|
const struct usb_ctrlrequest *ctrl);
|
|
extern void composite_suspend(struct usb_gadget *gadget);
|
|
extern void composite_resume(struct usb_gadget *gadget);
|
|
|
|
/*
|
|
* Some systems will need runtime overrides for the product identifiers
|
|
* published in the device descriptor, either numbers or strings or both.
|
|
* String parameters are in UTF-8 (superset of ASCII's 7 bit characters).
|
|
*/
|
|
struct usb_composite_overwrite {
|
|
u16 idVendor;
|
|
u16 idProduct;
|
|
u16 bcdDevice;
|
|
char *serial_number;
|
|
char *manufacturer;
|
|
char *product;
|
|
};
|
|
#define USB_GADGET_COMPOSITE_OPTIONS() \
|
|
static struct usb_composite_overwrite coverwrite; \
|
|
\
|
|
module_param_named(idVendor, coverwrite.idVendor, ushort, S_IRUGO); \
|
|
MODULE_PARM_DESC(idVendor, "USB Vendor ID"); \
|
|
\
|
|
module_param_named(idProduct, coverwrite.idProduct, ushort, S_IRUGO); \
|
|
MODULE_PARM_DESC(idProduct, "USB Product ID"); \
|
|
\
|
|
module_param_named(bcdDevice, coverwrite.bcdDevice, ushort, S_IRUGO); \
|
|
MODULE_PARM_DESC(bcdDevice, "USB Device version (BCD)"); \
|
|
\
|
|
module_param_named(iSerialNumber, coverwrite.serial_number, charp, \
|
|
S_IRUGO); \
|
|
MODULE_PARM_DESC(iSerialNumber, "SerialNumber string"); \
|
|
\
|
|
module_param_named(iManufacturer, coverwrite.manufacturer, charp, \
|
|
S_IRUGO); \
|
|
MODULE_PARM_DESC(iManufacturer, "USB Manufacturer string"); \
|
|
\
|
|
module_param_named(iProduct, coverwrite.product, charp, S_IRUGO); \
|
|
MODULE_PARM_DESC(iProduct, "USB Product string")
|
|
|
|
void usb_composite_overwrite_options(struct usb_composite_dev *cdev,
|
|
struct usb_composite_overwrite *covr);
|
|
|
|
static inline u16 get_default_bcdDevice(void)
|
|
{
|
|
u16 bcdDevice;
|
|
|
|
bcdDevice = bin2bcd(LINUX_VERSION_MAJOR) << 8;
|
|
bcdDevice |= bin2bcd(LINUX_VERSION_PATCHLEVEL);
|
|
return bcdDevice;
|
|
}
|
|
|
|
struct usb_function_driver {
|
|
const char *name;
|
|
struct module *mod;
|
|
struct list_head list;
|
|
struct usb_function_instance *(*alloc_inst)(void);
|
|
struct usb_function *(*alloc_func)(struct usb_function_instance *inst);
|
|
};
|
|
|
|
struct usb_function_instance {
|
|
struct config_group group;
|
|
struct list_head cfs_list;
|
|
struct usb_function_driver *fd;
|
|
int (*set_inst_name)(struct usb_function_instance *inst,
|
|
const char *name);
|
|
void (*free_func_inst)(struct usb_function_instance *inst);
|
|
};
|
|
|
|
void usb_function_unregister(struct usb_function_driver *f);
|
|
int usb_function_register(struct usb_function_driver *newf);
|
|
void usb_put_function_instance(struct usb_function_instance *fi);
|
|
void usb_put_function(struct usb_function *f);
|
|
struct usb_function_instance *usb_get_function_instance(const char *name);
|
|
struct usb_function *usb_get_function(struct usb_function_instance *fi);
|
|
|
|
struct usb_configuration *usb_get_config(struct usb_composite_dev *cdev,
|
|
int val);
|
|
int usb_add_config_only(struct usb_composite_dev *cdev,
|
|
struct usb_configuration *config);
|
|
void usb_remove_function(struct usb_configuration *c, struct usb_function *f);
|
|
|
|
#define DECLARE_USB_FUNCTION(_name, _inst_alloc, _func_alloc) \
|
|
static struct usb_function_driver _name ## usb_func = { \
|
|
.name = __stringify(_name), \
|
|
.mod = THIS_MODULE, \
|
|
.alloc_inst = _inst_alloc, \
|
|
.alloc_func = _func_alloc, \
|
|
}; \
|
|
MODULE_ALIAS("usbfunc:"__stringify(_name));
|
|
|
|
#define DECLARE_USB_FUNCTION_INIT(_name, _inst_alloc, _func_alloc) \
|
|
DECLARE_USB_FUNCTION(_name, _inst_alloc, _func_alloc) \
|
|
static int __init _name ## mod_init(void) \
|
|
{ \
|
|
return usb_function_register(&_name ## usb_func); \
|
|
} \
|
|
static void __exit _name ## mod_exit(void) \
|
|
{ \
|
|
usb_function_unregister(&_name ## usb_func); \
|
|
} \
|
|
module_init(_name ## mod_init); \
|
|
module_exit(_name ## mod_exit)
|
|
|
|
/* messaging utils */
|
|
#define DBG(d, fmt, args...) \
|
|
dev_dbg(&(d)->gadget->dev , fmt , ## args)
|
|
#define VDBG(d, fmt, args...) \
|
|
dev_vdbg(&(d)->gadget->dev , fmt , ## args)
|
|
#define ERROR(d, fmt, args...) \
|
|
dev_err(&(d)->gadget->dev , fmt , ## args)
|
|
#define WARNING(d, fmt, args...) \
|
|
dev_warn(&(d)->gadget->dev , fmt , ## args)
|
|
#define INFO(d, fmt, args...) \
|
|
dev_info(&(d)->gadget->dev , fmt , ## args)
|
|
|
|
#endif /* __LINUX_USB_COMPOSITE_H */
|