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/*
* nokia.c -- Nokia Composite Gadget Driver
*
* Copyright (C) 2008-2010 Nokia Corporation
* Contact: Felipe Balbi <felipe.balbi@nokia.com>
*
* This gadget driver borrows from serial.c which is:
*
* Copyright (C) 2003 Al Borchers (alborchers@steinerpoint.com)
* Copyright (C) 2008 by David Brownell
* Copyright (C) 2008 by Nokia Corporation
*
* This software is distributed under the terms of the GNU General
* Public License ("GPL") as published by the Free Software Foundation,
* version 2 of that License.
*/
#include <linux/kernel.h>
#include <linux/device.h>
#include "u_serial.h"
#include "u_ether.h"
#include "u_phonet.h"
#include "gadget_chips.h"
/* Defines */
#define NOKIA_VERSION_NUM 0x0211
#define NOKIA_LONG_NAME "N900 (PC-Suite Mode)"
/*-------------------------------------------------------------------------*/
/*
* 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_ecm.c"
#include "f_obex.c"
#include "f_phonet.c"
#include "u_ether.c"
/*-------------------------------------------------------------------------*/
USB_GADGET_COMPOSITE_OPTIONS();
#define NOKIA_VENDOR_ID 0x0421 /* Nokia */
#define NOKIA_PRODUCT_ID 0x01c8 /* Nokia Gadget */
/* string IDs are assigned dynamically */
#define STRING_DESCRIPTION_IDX USB_GADGET_FIRST_AVAIL_IDX
static char manufacturer_nokia[] = "Nokia";
static const char product_nokia[] = NOKIA_LONG_NAME;
static const char description_nokia[] = "PC-Suite Configuration";
static struct usb_string strings_dev[] = {
[USB_GADGET_MANUFACTURER_IDX].s = manufacturer_nokia,
[USB_GADGET_PRODUCT_IDX].s = NOKIA_LONG_NAME,
[USB_GADGET_SERIAL_IDX].s = "",
[STRING_DESCRIPTION_IDX].s = description_nokia,
{ } /* 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 struct usb_device_descriptor device_desc = {
.bLength = USB_DT_DEVICE_SIZE,
.bDescriptorType = USB_DT_DEVICE,
.bcdUSB = __constant_cpu_to_le16(0x0200),
.bDeviceClass = USB_CLASS_COMM,
.idVendor = __constant_cpu_to_le16(NOKIA_VENDOR_ID),
.idProduct = __constant_cpu_to_le16(NOKIA_PRODUCT_ID),
.bcdDevice = cpu_to_le16(NOKIA_VERSION_NUM),
/* .iManufacturer = DYNAMIC */
/* .iProduct = DYNAMIC */
.bNumConfigurations = 1,
};
/*-------------------------------------------------------------------------*/
/* Module */
MODULE_DESCRIPTION("Nokia composite gadget driver for N900");
MODULE_AUTHOR("Felipe Balbi");
MODULE_LICENSE("GPL");
/*-------------------------------------------------------------------------*/
static struct usb_function *f_acm_cfg1;
static struct usb_function *f_acm_cfg2;
static u8 hostaddr[ETH_ALEN];
static struct eth_dev *the_dev;
enum {
TTY_PORT_OBEX0,
TTY_PORT_OBEX1,
TTY_PORTS_MAX,
};
static unsigned char tty_lines[TTY_PORTS_MAX];
static struct usb_configuration nokia_config_500ma_driver = {
.label = "Bus Powered",
.bConfigurationValue = 1,
/* .iConfiguration = DYNAMIC */
.bmAttributes = USB_CONFIG_ATT_ONE,
.MaxPower = 500,
};
static struct usb_configuration nokia_config_100ma_driver = {
.label = "Self Powered",
.bConfigurationValue = 2,
/* .iConfiguration = DYNAMIC */
.bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER,
.MaxPower = 100,
};
static struct usb_function_instance *fi_acm;
static int __init nokia_bind_config(struct usb_configuration *c)
{
struct usb_function *f_acm;
int status = 0;
status = phonet_bind_config(c);
if (status)
printk(KERN_DEBUG "could not bind phonet config\n");
status = obex_bind_config(c, tty_lines[TTY_PORT_OBEX0]);
if (status)
printk(KERN_DEBUG "could not bind obex config %d\n", 0);
status = obex_bind_config(c, tty_lines[TTY_PORT_OBEX1]);
if (status)
printk(KERN_DEBUG "could not bind obex config %d\n", 0);
f_acm = usb_get_function(fi_acm);
if (IS_ERR(f_acm))
return PTR_ERR(f_acm);
status = usb_add_function(c, f_acm);
if (status)
goto err_conf;
status = ecm_bind_config(c, hostaddr, the_dev);
if (status) {
pr_debug("could not bind ecm config %d\n", status);
goto err_ecm;
}
if (c == &nokia_config_500ma_driver)
f_acm_cfg1 = f_acm;
else
f_acm_cfg2 = f_acm;
return status;
err_ecm:
usb_remove_function(c, f_acm);
err_conf:
usb_put_function(f_acm);
return status;
}
static int __init nokia_bind(struct usb_composite_dev *cdev)
{
struct usb_gadget *gadget = cdev->gadget;
int status;
int cur_line;
status = gphonet_setup(cdev->gadget);
if (status < 0)
goto err_phonet;
for (cur_line = 0; cur_line < TTY_PORTS_MAX; cur_line++) {
status = gserial_alloc_line(&tty_lines[cur_line]);
if (status)
goto err_ether;
}
the_dev = gether_setup(cdev->gadget, hostaddr);
if (IS_ERR(the_dev)) {
status = PTR_ERR(the_dev);
goto err_ether;
}
status = usb_string_ids_tab(cdev, strings_dev);
if (status < 0)
goto err_usb;
device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id;
device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id;
status = strings_dev[STRING_DESCRIPTION_IDX].id;
nokia_config_500ma_driver.iConfiguration = status;
nokia_config_100ma_driver.iConfiguration = status;
if (!gadget_supports_altsettings(gadget))
goto err_usb;
fi_acm = usb_get_function_instance("acm");
if (IS_ERR(fi_acm))
goto err_usb;
/* finally register the configuration */
status = usb_add_config(cdev, &nokia_config_500ma_driver,
nokia_bind_config);
if (status < 0)
goto err_acm_inst;
status = usb_add_config(cdev, &nokia_config_100ma_driver,
nokia_bind_config);
if (status < 0)
goto err_put_cfg1;
usb_composite_overwrite_options(cdev, &coverwrite);
dev_info(&gadget->dev, "%s\n", NOKIA_LONG_NAME);
return 0;
err_put_cfg1:
usb_put_function(f_acm_cfg1);
err_acm_inst:
usb_put_function_instance(fi_acm);
err_usb:
gether_cleanup(the_dev);
err_ether:
cur_line--;
while (cur_line >= 0)
gserial_free_line(tty_lines[cur_line--]);
gphonet_cleanup();
err_phonet:
return status;
}
static int __exit nokia_unbind(struct usb_composite_dev *cdev)
{
int i;
usb_put_function(f_acm_cfg1);
usb_put_function(f_acm_cfg2);
usb_put_function_instance(fi_acm);
gphonet_cleanup();
for (i = 0; i < TTY_PORTS_MAX; i++)
gserial_free_line(tty_lines[i]);
gether_cleanup(the_dev);
return 0;
}
static __refdata struct usb_composite_driver nokia_driver = {
.name = "g_nokia",
.dev = &device_desc,
.strings = dev_strings,
.max_speed = USB_SPEED_HIGH,
.bind = nokia_bind,
.unbind = __exit_p(nokia_unbind),
};
static int __init nokia_init(void)
{
return usb_composite_probe(&nokia_driver);
}
module_init(nokia_init);
static void __exit nokia_cleanup(void)
{
usb_composite_unregister(&nokia_driver);
}
module_exit(nokia_cleanup);
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