234 lines
6.1 KiB
C
234 lines
6.1 KiB
C
/*
|
|
* acm_ms.c -- Composite driver, with ACM and mass storage support
|
|
*
|
|
* Copyright (C) 2008 David Brownell
|
|
* Copyright (C) 2008 Nokia Corporation
|
|
* Author: David Brownell
|
|
* Modified: Klaus Schwarzkopf <schwarzkopf@sensortherm.de>
|
|
*
|
|
* Heavily based on multi.c and cdc2.c
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
|
|
#include "u_serial.h"
|
|
|
|
#define DRIVER_DESC "Composite Gadget (ACM + MS)"
|
|
#define DRIVER_VERSION "2011/10/10"
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
/*
|
|
* DO NOT REUSE THESE IDs with a protocol-incompatible driver!! Ever!!
|
|
* Instead: allocate your own, using normal USB-IF procedures.
|
|
*/
|
|
#define ACM_MS_VENDOR_NUM 0x1d6b /* Linux Foundation */
|
|
#define ACM_MS_PRODUCT_NUM 0x0106 /* Composite Gadget: ACM + MS*/
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
/*
|
|
* Kbuild is not very cooperative with respect to linking separately
|
|
* compiled library objects into one module. So for now we won't use
|
|
* separate compilation ... ensuring init/exit sections work to shrink
|
|
* the runtime footprint, and giving us at least some parts of what
|
|
* a "gcc --combine ... part1.c part2.c part3.c ... " build would.
|
|
*/
|
|
#include "f_mass_storage.c"
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
USB_GADGET_COMPOSITE_OPTIONS();
|
|
|
|
static struct usb_device_descriptor device_desc = {
|
|
.bLength = sizeof device_desc,
|
|
.bDescriptorType = USB_DT_DEVICE,
|
|
|
|
.bcdUSB = cpu_to_le16(0x0200),
|
|
|
|
.bDeviceClass = USB_CLASS_MISC /* 0xEF */,
|
|
.bDeviceSubClass = 2,
|
|
.bDeviceProtocol = 1,
|
|
|
|
/* .bMaxPacketSize0 = f(hardware) */
|
|
|
|
/* Vendor and product id can be overridden by module parameters. */
|
|
.idVendor = cpu_to_le16(ACM_MS_VENDOR_NUM),
|
|
.idProduct = cpu_to_le16(ACM_MS_PRODUCT_NUM),
|
|
/* .bcdDevice = f(hardware) */
|
|
/* .iManufacturer = DYNAMIC */
|
|
/* .iProduct = DYNAMIC */
|
|
/* NO SERIAL NUMBER */
|
|
/*.bNumConfigurations = DYNAMIC*/
|
|
};
|
|
|
|
static struct usb_otg_descriptor otg_descriptor = {
|
|
.bLength = sizeof otg_descriptor,
|
|
.bDescriptorType = USB_DT_OTG,
|
|
|
|
/*
|
|
* REVISIT SRP-only hardware is possible, although
|
|
* it would not be called "OTG" ...
|
|
*/
|
|
.bmAttributes = USB_OTG_SRP | USB_OTG_HNP,
|
|
};
|
|
|
|
static const struct usb_descriptor_header *otg_desc[] = {
|
|
(struct usb_descriptor_header *) &otg_descriptor,
|
|
NULL,
|
|
};
|
|
|
|
/* string IDs are assigned dynamically */
|
|
static struct usb_string strings_dev[] = {
|
|
[USB_GADGET_MANUFACTURER_IDX].s = "",
|
|
[USB_GADGET_PRODUCT_IDX].s = DRIVER_DESC,
|
|
[USB_GADGET_SERIAL_IDX].s = "",
|
|
{ } /* end of list */
|
|
};
|
|
|
|
static struct usb_gadget_strings stringtab_dev = {
|
|
.language = 0x0409, /* en-us */
|
|
.strings = strings_dev,
|
|
};
|
|
|
|
static struct usb_gadget_strings *dev_strings[] = {
|
|
&stringtab_dev,
|
|
NULL,
|
|
};
|
|
|
|
/****************************** Configurations ******************************/
|
|
|
|
static struct fsg_module_parameters fsg_mod_data = { .stall = 1 };
|
|
FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data);
|
|
|
|
static struct fsg_common fsg_common;
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
static struct usb_function *f_acm;
|
|
static struct usb_function_instance *f_acm_inst;
|
|
/*
|
|
* We _always_ have both ACM and mass storage functions.
|
|
*/
|
|
static int __init acm_ms_do_config(struct usb_configuration *c)
|
|
{
|
|
int status;
|
|
|
|
if (gadget_is_otg(c->cdev->gadget)) {
|
|
c->descriptors = otg_desc;
|
|
c->bmAttributes |= USB_CONFIG_ATT_WAKEUP;
|
|
}
|
|
|
|
f_acm_inst = usb_get_function_instance("acm");
|
|
if (IS_ERR(f_acm_inst))
|
|
return PTR_ERR(f_acm_inst);
|
|
|
|
f_acm = usb_get_function(f_acm_inst);
|
|
if (IS_ERR(f_acm)) {
|
|
status = PTR_ERR(f_acm);
|
|
goto err_func;
|
|
}
|
|
|
|
status = usb_add_function(c, f_acm);
|
|
if (status < 0)
|
|
goto err_conf;
|
|
|
|
status = fsg_bind_config(c->cdev, c, &fsg_common);
|
|
if (status < 0)
|
|
goto err_fsg;
|
|
|
|
return 0;
|
|
err_fsg:
|
|
usb_remove_function(c, f_acm);
|
|
err_conf:
|
|
usb_put_function(f_acm);
|
|
err_func:
|
|
usb_put_function_instance(f_acm_inst);
|
|
return status;
|
|
}
|
|
|
|
static struct usb_configuration acm_ms_config_driver = {
|
|
.label = DRIVER_DESC,
|
|
.bConfigurationValue = 1,
|
|
/* .iConfiguration = DYNAMIC */
|
|
.bmAttributes = USB_CONFIG_ATT_SELFPOWER,
|
|
};
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
static int __init acm_ms_bind(struct usb_composite_dev *cdev)
|
|
{
|
|
struct usb_gadget *gadget = cdev->gadget;
|
|
int status;
|
|
void *retp;
|
|
|
|
/* set up mass storage function */
|
|
retp = fsg_common_from_params(&fsg_common, cdev, &fsg_mod_data);
|
|
if (IS_ERR(retp)) {
|
|
status = PTR_ERR(retp);
|
|
return PTR_ERR(retp);
|
|
}
|
|
|
|
/*
|
|
* Allocate string descriptor numbers ... note that string
|
|
* contents can be overridden by the composite_dev glue.
|
|
*/
|
|
status = usb_string_ids_tab(cdev, strings_dev);
|
|
if (status < 0)
|
|
goto fail1;
|
|
device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id;
|
|
device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id;
|
|
|
|
/* register our configuration */
|
|
status = usb_add_config(cdev, &acm_ms_config_driver, acm_ms_do_config);
|
|
if (status < 0)
|
|
goto fail1;
|
|
|
|
usb_composite_overwrite_options(cdev, &coverwrite);
|
|
dev_info(&gadget->dev, "%s, version: " DRIVER_VERSION "\n",
|
|
DRIVER_DESC);
|
|
fsg_common_put(&fsg_common);
|
|
return 0;
|
|
|
|
/* error recovery */
|
|
fail1:
|
|
fsg_common_put(&fsg_common);
|
|
return status;
|
|
}
|
|
|
|
static int __exit acm_ms_unbind(struct usb_composite_dev *cdev)
|
|
{
|
|
usb_put_function(f_acm);
|
|
usb_put_function_instance(f_acm_inst);
|
|
return 0;
|
|
}
|
|
|
|
static __refdata struct usb_composite_driver acm_ms_driver = {
|
|
.name = "g_acm_ms",
|
|
.dev = &device_desc,
|
|
.max_speed = USB_SPEED_SUPER,
|
|
.strings = dev_strings,
|
|
.bind = acm_ms_bind,
|
|
.unbind = __exit_p(acm_ms_unbind),
|
|
};
|
|
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
MODULE_AUTHOR("Klaus Schwarzkopf <schwarzkopf@sensortherm.de>");
|
|
MODULE_LICENSE("GPL v2");
|
|
|
|
static int __init init(void)
|
|
{
|
|
return usb_composite_probe(&acm_ms_driver);
|
|
}
|
|
module_init(init);
|
|
|
|
static void __exit cleanup(void)
|
|
{
|
|
usb_composite_unregister(&acm_ms_driver);
|
|
}
|
|
module_exit(cleanup);
|