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/*
* multi.c -- Multifunction Composite driver
*
* Copyright (C) 2008 David Brownell
* Copyright (C) 2008 Nokia Corporation
* Copyright (C) 2009 Samsung Electronics
* Author: Michal Nazarewicz (mina86@mina86.com)
*
* 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 <linux/netdevice.h>
#include "u_serial.h"
#if defined USB_ETH_RNDIS
# undef USB_ETH_RNDIS
#endif
#ifdef CONFIG_USB_G_MULTI_RNDIS
# define USB_ETH_RNDIS y
#endif
#define DRIVER_DESC "Multifunction Composite Gadget"
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_AUTHOR("Michal Nazarewicz");
MODULE_LICENSE("GPL");
#include "f_mass_storage.h"
#include "u_ecm.h"
#ifdef USB_ETH_RNDIS
# include "u_rndis.h"
# include "rndis.h"
#endif
#include "u_ether.h"
USB_GADGET_COMPOSITE_OPTIONS();
USB_ETHERNET_MODULE_PARAMETERS();
/***************************** Device Descriptor ****************************/
#define MULTI_VENDOR_NUM 0x1d6b /* Linux Foundation */
#define MULTI_PRODUCT_NUM 0x0104 /* Multifunction Composite Gadget */
enum {
__MULTI_NO_CONFIG,
#ifdef CONFIG_USB_G_MULTI_RNDIS
MULTI_RNDIS_CONFIG_NUM,
#endif
#ifdef CONFIG_USB_G_MULTI_CDC
MULTI_CDC_CONFIG_NUM,
#endif
};
static struct usb_device_descriptor device_desc = {
.bLength = sizeof device_desc,
.bDescriptorType = USB_DT_DEVICE,
/* .bcdUSB = DYNAMIC */
.bDeviceClass = USB_CLASS_MISC /* 0xEF */,
.bDeviceSubClass = 2,
.bDeviceProtocol = 1,
/* Vendor and product id can be overridden by module parameters. */
.idVendor = cpu_to_le16(MULTI_VENDOR_NUM),
.idProduct = cpu_to_le16(MULTI_PRODUCT_NUM),
};
static const struct usb_descriptor_header *otg_desc[2];
enum {
MULTI_STRING_RNDIS_CONFIG_IDX = USB_GADGET_FIRST_AVAIL_IDX,
MULTI_STRING_CDC_CONFIG_IDX,
};
static struct usb_string strings_dev[] = {
[USB_GADGET_MANUFACTURER_IDX].s = "",
[USB_GADGET_PRODUCT_IDX].s = DRIVER_DESC,
[USB_GADGET_SERIAL_IDX].s = "",
[MULTI_STRING_RNDIS_CONFIG_IDX].s = "Multifunction with RNDIS",
[MULTI_STRING_CDC_CONFIG_IDX].s = "Multifunction with CDC ECM",
{ } /* end of list */
};
static struct usb_gadget_strings *dev_strings[] = {
&(struct usb_gadget_strings){
.language = 0x0409, /* en-us */
.strings = strings_dev,
},
NULL,
};
/****************************** Configurations ******************************/
static struct fsg_module_parameters fsg_mod_data = { .stall = 1 };
#ifdef CONFIG_USB_GADGET_DEBUG_FILES
static unsigned int fsg_num_buffers = CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS;
#else
/*
* Number of buffers we will use.
* 2 is usually enough for good buffering pipeline
*/
#define fsg_num_buffers CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS
#endif /* CONFIG_USB_GADGET_DEBUG_FILES */
FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data);
static struct usb_function_instance *fi_acm;
static struct usb_function_instance *fi_msg;
/********** RNDIS **********/
#ifdef USB_ETH_RNDIS
static struct usb_function_instance *fi_rndis;
static struct usb_function *f_acm_rndis;
static struct usb_function *f_rndis;
static struct usb_function *f_msg_rndis;
static int rndis_do_config(struct usb_configuration *c)
{
int ret;
if (gadget_is_otg(c->cdev->gadget)) {
c->descriptors = otg_desc;
c->bmAttributes |= USB_CONFIG_ATT_WAKEUP;
}
f_rndis = usb_get_function(fi_rndis);
if (IS_ERR(f_rndis))
return PTR_ERR(f_rndis);
ret = usb_add_function(c, f_rndis);
if (ret < 0)
goto err_func_rndis;
f_acm_rndis = usb_get_function(fi_acm);
if (IS_ERR(f_acm_rndis)) {
ret = PTR_ERR(f_acm_rndis);
goto err_func_acm;
}
ret = usb_add_function(c, f_acm_rndis);
if (ret)
goto err_conf;
f_msg_rndis = usb_get_function(fi_msg);
if (IS_ERR(f_msg_rndis)) {
ret = PTR_ERR(f_msg_rndis);
goto err_fsg;
}
ret = usb_add_function(c, f_msg_rndis);
if (ret)
goto err_run;
return 0;
err_run:
usb_put_function(f_msg_rndis);
err_fsg:
usb_remove_function(c, f_acm_rndis);
err_conf:
usb_put_function(f_acm_rndis);
err_func_acm:
usb_remove_function(c, f_rndis);
err_func_rndis:
usb_put_function(f_rndis);
return ret;
}
static __ref int rndis_config_register(struct usb_composite_dev *cdev)
{
static struct usb_configuration config = {
.bConfigurationValue = MULTI_RNDIS_CONFIG_NUM,
.bmAttributes = USB_CONFIG_ATT_SELFPOWER,
};
config.label = strings_dev[MULTI_STRING_RNDIS_CONFIG_IDX].s;
config.iConfiguration = strings_dev[MULTI_STRING_RNDIS_CONFIG_IDX].id;
return usb_add_config(cdev, &config, rndis_do_config);
}
#else
static __ref int rndis_config_register(struct usb_composite_dev *cdev)
{
return 0;
}
#endif
/********** CDC ECM **********/
#ifdef CONFIG_USB_G_MULTI_CDC
static struct usb_function_instance *fi_ecm;
static struct usb_function *f_acm_multi;
static struct usb_function *f_ecm;
static struct usb_function *f_msg_multi;
static int cdc_do_config(struct usb_configuration *c)
{
int ret;
if (gadget_is_otg(c->cdev->gadget)) {
c->descriptors = otg_desc;
c->bmAttributes |= USB_CONFIG_ATT_WAKEUP;
}
f_ecm = usb_get_function(fi_ecm);
if (IS_ERR(f_ecm))
return PTR_ERR(f_ecm);
ret = usb_add_function(c, f_ecm);
if (ret < 0)
goto err_func_ecm;
/* implicit port_num is zero */
f_acm_multi = usb_get_function(fi_acm);
if (IS_ERR(f_acm_multi)) {
ret = PTR_ERR(f_acm_multi);
goto err_func_acm;
}
ret = usb_add_function(c, f_acm_multi);
if (ret)
goto err_conf;
f_msg_multi = usb_get_function(fi_msg);
if (IS_ERR(f_msg_multi)) {
ret = PTR_ERR(f_msg_multi);
goto err_fsg;
}
ret = usb_add_function(c, f_msg_multi);
if (ret)
goto err_run;
return 0;
err_run:
usb_put_function(f_msg_multi);
err_fsg:
usb_remove_function(c, f_acm_multi);
err_conf:
usb_put_function(f_acm_multi);
err_func_acm:
usb_remove_function(c, f_ecm);
err_func_ecm:
usb_put_function(f_ecm);
return ret;
}
static __ref int cdc_config_register(struct usb_composite_dev *cdev)
{
static struct usb_configuration config = {
.bConfigurationValue = MULTI_CDC_CONFIG_NUM,
.bmAttributes = USB_CONFIG_ATT_SELFPOWER,
};
config.label = strings_dev[MULTI_STRING_CDC_CONFIG_IDX].s;
config.iConfiguration = strings_dev[MULTI_STRING_CDC_CONFIG_IDX].id;
return usb_add_config(cdev, &config, cdc_do_config);
}
#else
static __ref int cdc_config_register(struct usb_composite_dev *cdev)
{
return 0;
}
#endif
/****************************** Gadget Bind ******************************/
static int __ref multi_bind(struct usb_composite_dev *cdev)
{
struct usb_gadget *gadget = cdev->gadget;
#ifdef CONFIG_USB_G_MULTI_CDC
struct f_ecm_opts *ecm_opts;
#endif
#ifdef USB_ETH_RNDIS
struct f_rndis_opts *rndis_opts;
#endif
struct fsg_opts *fsg_opts;
struct fsg_config config;
int status;
if (!can_support_ecm(cdev->gadget)) {
dev_err(&gadget->dev, "controller '%s' not usable\n",
gadget->name);
return -EINVAL;
}
#ifdef CONFIG_USB_G_MULTI_CDC
fi_ecm = usb_get_function_instance("ecm");
if (IS_ERR(fi_ecm))
return PTR_ERR(fi_ecm);
ecm_opts = container_of(fi_ecm, struct f_ecm_opts, func_inst);
gether_set_qmult(ecm_opts->net, qmult);
if (!gether_set_host_addr(ecm_opts->net, host_addr))
pr_info<
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