Pileus Git - ~andy/linux/blob - 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/utsname.h>
  20 #include <linux/device.h>
  21
  22 #include "u_serial.h"
  23 #include "u_ether.h"
  24 #include "u_phonet.h"
  25 #include "gadget_chips.h"
  26
  27 /* Defines */
  28
  29 #define NOKIA_VERSION_NUM               0x0211
  30 #define NOKIA_LONG_NAME                 "N900 (PC-Suite Mode)"
  31
  32 /*-------------------------------------------------------------------------*/
  33
  34 /*
  35  * Kbuild is not very cooperative with respect to linking separately
  36  * compiled library objects into one module.  So for now we won't use
  37  * separate compilation ... ensuring init/exit sections work to shrink
  38  * the runtime footprint, and giving us at least some parts of what
  39  * a "gcc --combine ... part1.c part2.c part3.c ... " build would.
  40  */
  41 #include "composite.c"
  42
  43 #include "u_serial.c"
  44 #include "f_acm.c"
  45 #include "f_ecm.c"
  46 #include "f_obex.c"
  47 #include "f_serial.c"
  48 #include "f_phonet.c"
  49 #include "u_ether.c"
  50
  51 /*-------------------------------------------------------------------------*/
  52 USB_GADGET_COMPOSITE_OPTIONS();
  53
  54 #define NOKIA_VENDOR_ID                 0x0421  /* Nokia */
  55 #define NOKIA_PRODUCT_ID                0x01c8  /* Nokia Gadget */
  56
  57 /* string IDs are assigned dynamically */
  58
  59 #define STRING_MANUFACTURER_IDX         0
  60 #define STRING_PRODUCT_IDX              1
  61 #define STRING_DESCRIPTION_IDX          2
  62
  63 static char manufacturer_nokia[] = "Nokia";
  64 static const char product_nokia[] = NOKIA_LONG_NAME;
  65 static const char description_nokia[] = "PC-Suite Configuration";
  66
  67 static struct usb_string strings_dev[] = {
  68         [STRING_MANUFACTURER_IDX].s = manufacturer_nokia,
  69         [STRING_PRODUCT_IDX].s = NOKIA_LONG_NAME,
  70         [STRING_DESCRIPTION_IDX].s = description_nokia,
  71         {  } /* end of list */
  72 };
  73
  74 static struct usb_gadget_strings stringtab_dev = {
  75         .language       = 0x0409,       /* en-us */
  76         .strings        = strings_dev,
  77 };
  78
  79 static struct usb_gadget_strings *dev_strings[] = {
  80         &stringtab_dev,
  81         NULL,
  82 };
  83
  84 static struct usb_device_descriptor device_desc = {
  85         .bLength                = USB_DT_DEVICE_SIZE,
  86         .bDescriptorType        = USB_DT_DEVICE,
  87         .bcdUSB                 = __constant_cpu_to_le16(0x0200),
  88         .bDeviceClass           = USB_CLASS_COMM,
  89         .idVendor               = __constant_cpu_to_le16(NOKIA_VENDOR_ID),
  90         .idProduct              = __constant_cpu_to_le16(NOKIA_PRODUCT_ID),
  91         /* .iManufacturer = DYNAMIC */
  92         /* .iProduct = DYNAMIC */
  93         .bNumConfigurations =   1,
  94 };
  95
  96 /*-------------------------------------------------------------------------*/
  97
  98 /* Module */
  99 MODULE_DESCRIPTION("Nokia composite gadget driver for N900");
 100 MODULE_AUTHOR("Felipe Balbi");
 101 MODULE_LICENSE("GPL");
 102
 103 /*-------------------------------------------------------------------------*/
 104
 105 static u8 hostaddr[ETH_ALEN];
 106
 107 static int __init nokia_bind_config(struct usb_configuration *c)
 108 {
 109         int status = 0;
 110
 111         status = phonet_bind_config(c);
 112         if (status)
 113                 printk(KERN_DEBUG "could not bind phonet config\n");
 114
 115         status = obex_bind_config(c, 0);
 116         if (status)
 117                 printk(KERN_DEBUG "could not bind obex config %d\n", 0);
 118
 119         status = obex_bind_config(c, 1);
 120         if (status)
 121                 printk(KERN_DEBUG "could not bind obex config %d\n", 0);
 122
 123         status = acm_bind_config(c, 2);
 124         if (status)
 125                 printk(KERN_DEBUG "could not bind acm config\n");
 126
 127         status = ecm_bind_config(c, hostaddr);
 128         if (status)
 129                 printk(KERN_DEBUG "could not bind ecm config\n");
 130
 131         return status;
 132 }
 133
 134 static struct usb_configuration nokia_config_500ma_driver = {
 135         .label          = "Bus Powered",
 136         .bConfigurationValue = 1,
 137         /* .iConfiguration = DYNAMIC */
 138         .bmAttributes   = USB_CONFIG_ATT_ONE,
 139         .bMaxPower      = 250, /* 500mA */
 140 };
 141
 142 static struct usb_configuration nokia_config_100ma_driver = {
 143         .label          = "Self Powered",
 144         .bConfigurationValue = 2,
 145         /* .iConfiguration = DYNAMIC */
 146         .bmAttributes   = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER,
 147         .bMaxPower      = 50, /* 100 mA */
 148 };
 149
 150 static int __init nokia_bind(struct usb_composite_dev *cdev)
 151 {
 152         int                     gcnum;
 153         struct usb_gadget       *gadget = cdev->gadget;
 154         int                     status;
 155
 156         status = gphonet_setup(cdev->gadget);
 157         if (status < 0)
 158                 goto err_phonet;
 159
 160         status = gserial_setup(cdev->gadget, 3);
 161         if (status < 0)
 162                 goto err_serial;
 163
 164         status = gether_setup(cdev->gadget, hostaddr);
 165         if (status < 0)
 166                 goto err_ether;
 167
 168         status = usb_string_ids_tab(cdev, strings_dev);
 169         if (status < 0)
 170                 goto err_usb;
 171         device_desc.iManufacturer = strings_dev[STRING_MANUFACTURER_IDX].id;
 172         device_desc.iProduct = strings_dev[STRING_PRODUCT_IDX].id;
 173         status = strings_dev[STRING_DESCRIPTION_IDX].id;
 174         nokia_config_500ma_driver.iConfiguration = status;
 175         nokia_config_100ma_driver.iConfiguration = status;
 176
 177         /* set up other descriptors */
 178         gcnum = usb_gadget_controller_number(gadget);
 179         if (gcnum >= 0)
 180                 device_desc.bcdDevice = cpu_to_le16(NOKIA_VERSION_NUM);
 181         else {
 182                 /* this should only work with hw that supports altsettings
 183                  * and several endpoints, anything else, panic.
 184                  */
 185                 pr_err("nokia_bind: controller '%s' not recognized\n",
 186                         gadget->name);
 187                 goto err_usb;
 188         }
 189
 190         /* finally register the configuration */
 191         status = usb_add_config(cdev, &nokia_config_500ma_driver,
 192                         nokia_bind_config);
 193         if (status < 0)
 194                 goto err_usb;
 195
 196         status = usb_add_config(cdev, &nokia_config_100ma_driver,
 197                         nokia_bind_config);
 198         if (status < 0)
 199                 goto err_usb;
 200
 201         usb_composite_overwrite_options(cdev, &coverwrite);
 202         dev_info(&gadget->dev, "%s\n", NOKIA_LONG_NAME);
 203
 204         return 0;
 205
 206 err_usb:
 207         gether_cleanup();
 208 err_ether:
 209         gserial_cleanup();
 210 err_serial:
 211         gphonet_cleanup();
 212 err_phonet:
 213         return status;
 214 }
 215
 216 static int __exit nokia_unbind(struct usb_composite_dev *cdev)
 217 {
 218         gphonet_cleanup();
 219         gserial_cleanup();
 220         gether_cleanup();
 221
 222         return 0;
 223 }
 224
 225 static __refdata struct usb_composite_driver nokia_driver = {
 226         .name           = "g_nokia",
 227         .dev            = &device_desc,
 228         .strings        = dev_strings,
 229         .max_speed      = USB_SPEED_HIGH,
 230         .bind           = nokia_bind,
 231         .unbind         = __exit_p(nokia_unbind),
 232 };
 233
 234 static int __init nokia_init(void)
 235 {
 236         return usb_composite_probe(&nokia_driver);
 237 }
 238 module_init(nokia_init);
 239
 240 static void __exit nokia_cleanup(void)
 241 {
 242         usb_composite_unregister(&nokia_driver);
 243 }
 244 module_exit(nokia_cleanup);
 245