496 lines
11 KiB
C
496 lines
11 KiB
C
/*
|
|
* 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("using host ethernet address: %s", host_addr);
|
|
if (!gether_set_dev_addr(ecm_opts->net, dev_addr))
|
|
pr_info("using self ethernet address: %s", dev_addr);
|
|
#endif
|
|
|
|
#ifdef USB_ETH_RNDIS
|
|
fi_rndis = usb_get_function_instance("rndis");
|
|
if (IS_ERR(fi_rndis)) {
|
|
status = PTR_ERR(fi_rndis);
|
|
goto fail;
|
|
}
|
|
|
|
rndis_opts = container_of(fi_rndis, struct f_rndis_opts, func_inst);
|
|
|
|
gether_set_qmult(rndis_opts->net, qmult);
|
|
if (!gether_set_host_addr(rndis_opts->net, host_addr))
|
|
pr_info("using host ethernet address: %s", host_addr);
|
|
if (!gether_set_dev_addr(rndis_opts->net, dev_addr))
|
|
pr_info("using self ethernet address: %s", dev_addr);
|
|
#endif
|
|
|
|
#if (defined CONFIG_USB_G_MULTI_CDC && defined USB_ETH_RNDIS)
|
|
/*
|
|
* If both ecm and rndis are selected then:
|
|
* 1) rndis borrows the net interface from ecm
|
|
* 2) since the interface is shared it must not be bound
|
|
* twice - in ecm's _and_ rndis' binds, so do it here.
|
|
*/
|
|
gether_set_gadget(ecm_opts->net, cdev->gadget);
|
|
status = gether_register_netdev(ecm_opts->net);
|
|
if (status)
|
|
goto fail0;
|
|
|
|
rndis_borrow_net(fi_rndis, ecm_opts->net);
|
|
ecm_opts->bound = true;
|
|
#endif
|
|
|
|
/* set up serial link layer */
|
|
fi_acm = usb_get_function_instance("acm");
|
|
if (IS_ERR(fi_acm)) {
|
|
status = PTR_ERR(fi_acm);
|
|
goto fail0;
|
|
}
|
|
|
|
/* set up mass storage function */
|
|
fi_msg = usb_get_function_instance("mass_storage");
|
|
if (IS_ERR(fi_msg)) {
|
|
status = PTR_ERR(fi_msg);
|
|
goto fail1;
|
|
}
|
|
fsg_config_from_params(&config, &fsg_mod_data, fsg_num_buffers);
|
|
fsg_opts = fsg_opts_from_func_inst(fi_msg);
|
|
|
|
fsg_opts->no_configfs = true;
|
|
status = fsg_common_set_num_buffers(fsg_opts->common, fsg_num_buffers);
|
|
if (status)
|
|
goto fail2;
|
|
|
|
status = fsg_common_set_cdev(fsg_opts->common, cdev, config.can_stall);
|
|
if (status)
|
|
goto fail_set_cdev;
|
|
|
|
fsg_common_set_sysfs(fsg_opts->common, true);
|
|
status = fsg_common_create_luns(fsg_opts->common, &config);
|
|
if (status)
|
|
goto fail_set_cdev;
|
|
|
|
fsg_common_set_inquiry_string(fsg_opts->common, config.vendor_name,
|
|
config.product_name);
|
|
|
|
/* allocate string IDs */
|
|
status = usb_string_ids_tab(cdev, strings_dev);
|
|
if (unlikely(status < 0))
|
|
goto fail_string_ids;
|
|
device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id;
|
|
|
|
if (gadget_is_otg(gadget) && !otg_desc[0]) {
|
|
struct usb_descriptor_header *usb_desc;
|
|
|
|
usb_desc = usb_otg_descriptor_alloc(gadget);
|
|
if (!usb_desc)
|
|
goto fail_string_ids;
|
|
usb_otg_descriptor_init(gadget, usb_desc);
|
|
otg_desc[0] = usb_desc;
|
|
otg_desc[1] = NULL;
|
|
}
|
|
|
|
/* register configurations */
|
|
status = rndis_config_register(cdev);
|
|
if (unlikely(status < 0))
|
|
goto fail_otg_desc;
|
|
|
|
status = cdc_config_register(cdev);
|
|
if (unlikely(status < 0))
|
|
goto fail_otg_desc;
|
|
usb_composite_overwrite_options(cdev, &coverwrite);
|
|
|
|
/* we're done */
|
|
dev_info(&gadget->dev, DRIVER_DESC "\n");
|
|
return 0;
|
|
|
|
|
|
/* error recovery */
|
|
fail_otg_desc:
|
|
kfree(otg_desc[0]);
|
|
otg_desc[0] = NULL;
|
|
fail_string_ids:
|
|
fsg_common_remove_luns(fsg_opts->common);
|
|
fail_set_cdev:
|
|
fsg_common_free_buffers(fsg_opts->common);
|
|
fail2:
|
|
usb_put_function_instance(fi_msg);
|
|
fail1:
|
|
usb_put_function_instance(fi_acm);
|
|
fail0:
|
|
#ifdef USB_ETH_RNDIS
|
|
usb_put_function_instance(fi_rndis);
|
|
fail:
|
|
#endif
|
|
#ifdef CONFIG_USB_G_MULTI_CDC
|
|
usb_put_function_instance(fi_ecm);
|
|
#endif
|
|
return status;
|
|
}
|
|
|
|
static int multi_unbind(struct usb_composite_dev *cdev)
|
|
{
|
|
#ifdef CONFIG_USB_G_MULTI_CDC
|
|
usb_put_function(f_msg_multi);
|
|
#endif
|
|
#ifdef USB_ETH_RNDIS
|
|
usb_put_function(f_msg_rndis);
|
|
#endif
|
|
usb_put_function_instance(fi_msg);
|
|
#ifdef CONFIG_USB_G_MULTI_CDC
|
|
usb_put_function(f_acm_multi);
|
|
#endif
|
|
#ifdef USB_ETH_RNDIS
|
|
usb_put_function(f_acm_rndis);
|
|
#endif
|
|
usb_put_function_instance(fi_acm);
|
|
#ifdef USB_ETH_RNDIS
|
|
usb_put_function(f_rndis);
|
|
usb_put_function_instance(fi_rndis);
|
|
#endif
|
|
#ifdef CONFIG_USB_G_MULTI_CDC
|
|
usb_put_function(f_ecm);
|
|
usb_put_function_instance(fi_ecm);
|
|
#endif
|
|
kfree(otg_desc[0]);
|
|
otg_desc[0] = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/****************************** Some noise ******************************/
|
|
|
|
|
|
static struct usb_composite_driver multi_driver = {
|
|
.name = "g_multi",
|
|
.dev = &device_desc,
|
|
.strings = dev_strings,
|
|
.max_speed = USB_SPEED_HIGH,
|
|
.bind = multi_bind,
|
|
.unbind = multi_unbind,
|
|
.needs_serial = 1,
|
|
};
|
|
|
|
module_usb_composite_driver(multi_driver);
|