drivers/usb/gadget/nokia.c

   1 /*
   2  * nokia.c -- Nokia Composite Gadget Driver
   3  *
   4  * Copyright (C) 2008-2010 Nokia Corporation
   5  * Contact: Felipe Balbi <felipe.balbi@nokia.com>
   6  *
   7  * This gadget driver borrows from serial.c which is:
   8  *
   9  * Copyright (C) 2003 Al Borchers (alborchers@steinerpoint.com)
  10  * Copyright (C) 2008 by David Brownell
  11  * Copyright (C) 2008 by Nokia Corporation
  12  *
  13  * This software is distributed under the terms of the GNU General
  14  * Public License ("GPL") as published by the Free Software Foundation,
  15  * version 2 of that License.
  16  */
  17
  18 #include <linux/kernel.h>
  19 #include <linux/device.h>
  20
  21 #include "u_serial.h"
  22 #include "u_ether.h"
  23 #include "u_phonet.h"
  24 #include "gadget_chips.h"
  25
  26 /* Defines */
  27
  28 #define NOKIA_VERSION_NUM               0x0211
  29 #define NOKIA_LONG_NAME                 "N900 (PC-Suite Mode)"
  30
  31 /*-------------------------------------------------------------------------*/
  32
  33 /*
  34  * Kbuild is not very cooperative with respect to linking separately
  35  * compiled library objects into one module.  So for now we won't use
  36  * separate compilation ... ensuring init/exit sections work to shrink
  37  * the runtime footprint, and giving us at least some parts of what
  38  * a "gcc --combine ... part1.c part2.c part3.c ... " build would.
  39  */
  40 #include "u_serial.c"
  41 #include "f_acm.c"
  42 #include "f_ecm.c"
  43 #include "f_obex.c"
  44 #include "f_serial.c"
  45 #include "f_phonet.c"
  46 #include "u_ether.c"
  47
  48 /*-------------------------------------------------------------------------*/
  49 USB_GADGET_COMPOSITE_OPTIONS();
  50
  51 #define NOKIA_VENDOR_ID                 0x0421  /* Nokia */
  52 #define NOKIA_PRODUCT_ID                0x01c8  /* Nokia Gadget */
  53
  54 /* string IDs are assigned dynamically */
  55
  56 #define STRING_DESCRIPTION_IDX          USB_GADGET_FIRST_AVAIL_IDX
  57
  58 static char manufacturer_nokia[] = "Nokia";
  59 static const char product_nokia[] = NOKIA_LONG_NAME;
  60 static const char description_nokia[] = "PC-Suite Configuration";
  61
  62 static struct usb_string strings_dev[] = {
  63         [USB_GADGET_MANUFACTURER_IDX].s = manufacturer_nokia,
  64         [USB_GADGET_PRODUCT_IDX].s = NOKIA_LONG_NAME,
  65         [USB_GADGET_SERIAL_IDX].s = "",
  66         [STRING_DESCRIPTION_IDX].s = description_nokia,
  67         {  } /* end of list */
  68 };
  69
  70 static struct usb_gadget_strings stringtab_dev = {
  71         .language       = 0x0409,       /* en-us */
  72         .strings        = strings_dev,
  73 };
  74
  75 static struct usb_gadget_strings *dev_strings[] = {
  76         &stringtab_dev,
  77         NULL,
  78 };
  79
  80 static struct usb_device_descriptor device_desc = {
  81         .bLength                = USB_DT_DEVICE_SIZE,
  82         .bDescriptorType        = USB_DT_DEVICE,
  83         .bcdUSB                 = __constant_cpu_to_le16(0x0200),
  84         .bDeviceClass           = USB_CLASS_COMM,
  85         .idVendor               = __constant_cpu_to_le16(NOKIA_VENDOR_ID),
  86         .idProduct              = __constant_cpu_to_le16(NOKIA_PRODUCT_ID),
  87         .bcdDevice              = cpu_to_le16(NOKIA_VERSION_NUM),
  88         /* .iManufacturer = DYNAMIC */
  89         /* .iProduct = DYNAMIC */
  90         .bNumConfigurations =   1,
  91 };
  92
  93 /*-------------------------------------------------------------------------*/
  94
  95 /* Module */
  96 MODULE_DESCRIPTION("Nokia composite gadget driver for N900");
  97 MODULE_AUTHOR("Felipe Balbi");
  98 MODULE_LICENSE("GPL");
  99
 100 /*-------------------------------------------------------------------------*/
 101
 102 static u8 hostaddr[ETH_ALEN];
 103
 104 static int __init nokia_bind_config(struct usb_configuration *c)
 105 {
 106         int status = 0;
 107
 108         status = phonet_bind_config(c);
 109         if (status)
 110                 printk(KERN_DEBUG "could not bind phonet config\n");
 111
 112         status = obex_bind_config(c, 0);
 113         if (status)
 114                 printk(KERN_DEBUG "could not bind obex config %d\n", 0);
 115
 116         status = obex_bind_config(c, 1);
 117         if (status)
 118                 printk(KERN_DEBUG "could not bind obex config %d\n", 0);
 119
 120         status = acm_bind_config(c, 2);
 121         if (status)
 122                 printk(KERN_DEBUG "could not bind acm config\n");
 123
 124         status = ecm_bind_config(c, hostaddr);
 125         if (status)
 126                 printk(KERN_DEBUG "could not bind ecm config\n");
 127
 128         return status;
 129 }
 130
 131 static struct usb_configuration nokia_config_500ma_driver = {
 132         .label          = "Bus Powered",
 133         .bConfigurationValue = 1,
 134         /* .iConfiguration = DYNAMIC */
 135         .bmAttributes   = USB_CONFIG_ATT_ONE,
 136         .MaxPower       = 500,
 137 };
 138
 139 static struct usb_configuration nokia_config_100ma_driver = {
 140         .label          = "Self Powered",
 141         .bConfigurationValue = 2,
 142         /* .iConfiguration = DYNAMIC */
 143         .bmAttributes   = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER,
 144         .MaxPower       = 100,
 145 };
 146
 147 static int __init nokia_bind(struct usb_composite_dev *cdev)
 148 {
 149         struct usb_gadget       *gadget = cdev->gadget;
 150         int                     status;
 151
 152         status = gphonet_setup(cdev->gadget);
 153         if (status < 0)
 154                 goto err_phonet;
 155
 156         status = gserial_setup(cdev->gadget, 3);
 157         if (status < 0)
 158                 goto err_serial;
 159
 160         status = gether_setup(cdev->gadget, hostaddr);
 161         if (status < 0)
 162                 goto err_ether;
 163
 164         status = usb_string_ids_tab(cdev, strings_dev);
 165         if (status < 0)
 166                 goto err_usb;
 167         device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id;
 168         device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id;
 169         status = strings_dev[STRING_DESCRIPTION_IDX].id;
 170         nokia_config_500ma_driver.iConfiguration = status;
 171         nokia_config_100ma_driver.iConfiguration = status;
 172
 173         if (!gadget_supports_altsettings(gadget))
 174                 goto err_usb;
 175
 176         /* finally register the configuration */
 177         status = usb_add_config(cdev, &nokia_config_500ma_driver,
 178                         nokia_bind_config);
 179         if (status < 0)
 180                 goto err_usb;
 181
 182         status = usb_add_config(cdev, &nokia_config_100ma_driver,
 183                         nokia_bind_config);
 184         if (status < 0)
 185                 goto err_usb;
 186
 187         usb_composite_overwrite_options(cdev, &coverwrite);
 188         dev_info(&gadget->dev, "%s\n", NOKIA_LONG_NAME);
 189
 190         return 0;
 191
 192 err_usb:
 193         gether_cleanup();
 194 err_ether:
 195         gserial_cleanup();
 196 err_serial:
 197         gphonet_cleanup();
 198 err_phonet:
 199         return status;
 200 }
 201
 202 static int __exit nokia_unbind(struct usb_composite_dev *cdev)
 203 {
 204         gphonet_cleanup();
 205         gserial_cleanup();
 206         gether_cleanup();
 207
 208         return 0;
 209 }
 210
 211 static __refdata struct usb_composite_driver nokia_driver = {
 212         .name           = "g_nokia",
 213         .dev            = &device_desc,
 214         .strings        = dev_strings,
 215         .max_speed      = USB_SPEED_HIGH,
 216         .bind           = nokia_bind,
 217         .unbind         = __exit_p(nokia_unbind),
 218 };
 219
 220 static int __init nokia_init(void)
 221 {
 222         return usb_composite_probe(&nokia_driver);
 223 }
 224 module_init(nokia_init);
 225
 226 static void __exit nokia_cleanup(void)
 227 {
 228         usb_composite_unregister(&nokia_driver);
 229 }
 230 module_exit(nokia_cleanup);
 231