mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 14:00:54 +07:00
4cb80cda51
cdc_do_config() had a double ret check after fsg_add(). Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
357 lines
8.3 KiB
C
357 lines
8.3 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 (m.nazarewicz@samsung.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.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/utsname.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"
|
|
#define DRIVER_VERSION "2009/07/21"
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
#define MULTI_VENDOR_NUM 0x0525 /* XXX NetChip */
|
|
#define MULTI_PRODUCT_NUM 0xa4ab /* XXX */
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
/*
|
|
* 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 "composite.c"
|
|
#include "usbstring.c"
|
|
#include "config.c"
|
|
#include "epautoconf.c"
|
|
|
|
#include "u_serial.c"
|
|
#include "f_acm.c"
|
|
|
|
#include "f_ecm.c"
|
|
#include "f_subset.c"
|
|
#ifdef USB_ETH_RNDIS
|
|
# include "f_rndis.c"
|
|
# include "rndis.c"
|
|
#endif
|
|
#include "u_ether.c"
|
|
|
|
#undef DBG /* u_ether.c has broken idea about macros */
|
|
#undef VDBG /* so clean up after it */
|
|
#undef ERROR
|
|
#undef INFO
|
|
#include "f_mass_storage.c"
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
static struct usb_device_descriptor device_desc = {
|
|
.bLength = sizeof device_desc,
|
|
.bDescriptorType = USB_DT_DEVICE,
|
|
|
|
.bcdUSB = cpu_to_le16(0x0200),
|
|
|
|
/* .bDeviceClass = USB_CLASS_COMM, */
|
|
/* .bDeviceSubClass = 0, */
|
|
/* .bDeviceProtocol = 0, */
|
|
.bDeviceClass = 0xEF,
|
|
.bDeviceSubClass = 2,
|
|
.bDeviceProtocol = 1,
|
|
/* .bMaxPacketSize0 = f(hardware) */
|
|
|
|
/* Vendor and product id can be overridden by module parameters. */
|
|
.idVendor = cpu_to_le16(MULTI_VENDOR_NUM),
|
|
.idProduct = cpu_to_le16(MULTI_PRODUCT_NUM),
|
|
/* .bcdDevice = f(hardware) */
|
|
/* .iManufacturer = DYNAMIC */
|
|
/* .iProduct = DYNAMIC */
|
|
/* NO SERIAL NUMBER */
|
|
.bNumConfigurations = 1,
|
|
};
|
|
|
|
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 */
|
|
|
|
#define STRING_MANUFACTURER_IDX 0
|
|
#define STRING_PRODUCT_IDX 1
|
|
|
|
static char manufacturer[50];
|
|
|
|
static struct usb_string strings_dev[] = {
|
|
[STRING_MANUFACTURER_IDX].s = manufacturer,
|
|
[STRING_PRODUCT_IDX].s = DRIVER_DESC,
|
|
{ } /* 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,
|
|
};
|
|
|
|
static u8 hostaddr[ETH_ALEN];
|
|
|
|
|
|
|
|
/****************************** Configurations ******************************/
|
|
|
|
static struct fsg_module_parameters mod_data = {
|
|
.stall = 1
|
|
};
|
|
FSG_MODULE_PARAMETERS(/* no prefix */, mod_data);
|
|
|
|
static struct fsg_common *fsg_common;
|
|
|
|
|
|
#ifdef USB_ETH_RNDIS
|
|
|
|
static int __init 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;
|
|
}
|
|
|
|
ret = rndis_bind_config(c, hostaddr);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = acm_bind_config(c, 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = fsg_add(c->cdev, c, fsg_common);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct usb_configuration rndis_config_driver = {
|
|
.label = "Multifunction Composite (RNDIS + MS + ACM)",
|
|
.bind = rndis_do_config,
|
|
.bConfigurationValue = 2,
|
|
/* .iConfiguration = DYNAMIC */
|
|
.bmAttributes = USB_CONFIG_ATT_SELFPOWER,
|
|
};
|
|
|
|
#endif
|
|
|
|
#ifdef CONFIG_USB_G_MULTI_CDC
|
|
|
|
static int __init 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;
|
|
}
|
|
|
|
ret = ecm_bind_config(c, hostaddr);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = acm_bind_config(c, 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = fsg_add(c->cdev, c, fsg_common);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct usb_configuration cdc_config_driver = {
|
|
.label = "Multifunction Composite (CDC + MS + ACM)",
|
|
.bind = cdc_do_config,
|
|
.bConfigurationValue = 1,
|
|
/* .iConfiguration = DYNAMIC */
|
|
.bmAttributes = USB_CONFIG_ATT_SELFPOWER,
|
|
};
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/****************************** Gadget Bind ******************************/
|
|
|
|
|
|
static int __init multi_bind(struct usb_composite_dev *cdev)
|
|
{
|
|
struct usb_gadget *gadget = cdev->gadget;
|
|
int status, gcnum;
|
|
|
|
if (!can_support_ecm(cdev->gadget)) {
|
|
dev_err(&gadget->dev, "controller '%s' not usable\n",
|
|
gadget->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* set up network link layer */
|
|
status = gether_setup(cdev->gadget, hostaddr);
|
|
if (status < 0)
|
|
return status;
|
|
|
|
/* set up serial link layer */
|
|
status = gserial_setup(cdev->gadget, 1);
|
|
if (status < 0)
|
|
goto fail0;
|
|
|
|
/* set up mass storage function */
|
|
fsg_common = fsg_common_from_params(0, cdev, &mod_data);
|
|
if (IS_ERR(fsg_common)) {
|
|
status = PTR_ERR(fsg_common);
|
|
goto fail1;
|
|
}
|
|
|
|
|
|
gcnum = usb_gadget_controller_number(gadget);
|
|
if (gcnum >= 0)
|
|
device_desc.bcdDevice = cpu_to_le16(0x0300 | gcnum);
|
|
else {
|
|
/* We assume that can_support_ecm() tells the truth;
|
|
* but if the controller isn't recognized at all then
|
|
* that assumption is a bit more likely to be wrong.
|
|
*/
|
|
WARNING(cdev, "controller '%s' not recognized\n",
|
|
gadget->name);
|
|
device_desc.bcdDevice = cpu_to_le16(0x0300 | 0x0099);
|
|
}
|
|
|
|
|
|
/* Allocate string descriptor numbers ... note that string
|
|
* contents can be overridden by the composite_dev glue.
|
|
*/
|
|
|
|
/* device descriptor strings: manufacturer, product */
|
|
snprintf(manufacturer, sizeof manufacturer, "%s %s with %s",
|
|
init_utsname()->sysname, init_utsname()->release,
|
|
gadget->name);
|
|
status = usb_string_id(cdev);
|
|
if (status < 0)
|
|
goto fail2;
|
|
strings_dev[STRING_MANUFACTURER_IDX].id = status;
|
|
device_desc.iManufacturer = status;
|
|
|
|
status = usb_string_id(cdev);
|
|
if (status < 0)
|
|
goto fail2;
|
|
strings_dev[STRING_PRODUCT_IDX].id = status;
|
|
device_desc.iProduct = status;
|
|
|
|
#ifdef USB_ETH_RNDIS
|
|
/* register our first configuration */
|
|
status = usb_add_config(cdev, &rndis_config_driver);
|
|
if (status < 0)
|
|
goto fail2;
|
|
#endif
|
|
|
|
#ifdef CONFIG_USB_G_MULTI_CDC
|
|
/* register our second configuration */
|
|
status = usb_add_config(cdev, &cdc_config_driver);
|
|
if (status < 0)
|
|
goto fail2;
|
|
#endif
|
|
|
|
dev_info(&gadget->dev, DRIVER_DESC ", version: " DRIVER_VERSION "\n");
|
|
fsg_common_put(fsg_common);
|
|
return 0;
|
|
|
|
fail2:
|
|
fsg_common_put(fsg_common);
|
|
fail1:
|
|
gserial_cleanup();
|
|
fail0:
|
|
gether_cleanup();
|
|
return status;
|
|
}
|
|
|
|
static int __exit multi_unbind(struct usb_composite_dev *cdev)
|
|
{
|
|
gserial_cleanup();
|
|
gether_cleanup();
|
|
return 0;
|
|
}
|
|
|
|
|
|
/****************************** Some noise ******************************/
|
|
|
|
|
|
static struct usb_composite_driver multi_driver = {
|
|
.name = "g_multi",
|
|
.dev = &device_desc,
|
|
.strings = dev_strings,
|
|
.bind = multi_bind,
|
|
.unbind = __exit_p(multi_unbind),
|
|
};
|
|
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
MODULE_AUTHOR("Michal Nazarewicz");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
static int __init g_multi_init(void)
|
|
{
|
|
return usb_composite_register(&multi_driver);
|
|
}
|
|
module_init(g_multi_init);
|
|
|
|
static void __exit g_multi_cleanup(void)
|
|
{
|
|
usb_composite_unregister(&multi_driver);
|
|
}
|
|
module_exit(g_multi_cleanup);
|