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 #include "usbstring.c"
  43 #include "config.c"
  44 #include "epautoconf.c"
  45
  46 #include "u_serial.c"
  47 #include "f_acm.c"
  48 #include "f_ecm.c"
  49 #include "f_obex.c"
  50 #include "f_serial.c"
  51 #include "f_phonet.c"
  52 #include "u_ether.c"
  53
  54 /*-------------------------------------------------------------------------*/
  55
  56 #define NOKIA_VENDOR_ID                 0x0421  /* Nokia */
  57 #define NOKIA_PRODUCT_ID                0x01c8  /* Nokia Gadget */
  58
  59 /* string IDs are assigned dynamically */
  60
  61 #define STRING_MANUFACTURER_IDX         0
  62 #define STRING_PRODUCT_IDX              1
  63 #define STRING_DESCRIPTION_IDX          2
  64
  65 static char manufacturer_nokia[] = "Nokia";
  66 static const char product_nokia[] = NOKIA_LONG_NAME;
  67 static const char description_nokia[] = "PC-Suite Configuration";
  68
  69 static struct usb_string strings_dev[] = {
  70         [STRING_MANUFACTURER_IDX].s = manufacturer_nokia,
  71         [STRING_PRODUCT_IDX].s = NOKIA_LONG_NAME,
  72         [STRING_DESCRIPTION_IDX].s = description_nokia,
  73         {  } /* end of list */
  74 };
  75
  76 static struct usb_gadget_strings stringtab_dev = {
  77         .language       = 0x0409,       /* en-us */
  78         .strings        = strings_dev,
  79 };
  80
  81 static struct usb_gadget_strings *dev_strings[] = {
  82         &stringtab_dev,
  83         NULL,
  84 };
  85
  86 static struct usb_device_descriptor device_desc = {
  87         .bLength                = USB_DT_DEVICE_SIZE,
  88         .bDescriptorType        = USB_DT_DEVICE,
  89         .bcdUSB                 = __constant_cpu_to_le16(0x0200),
  90         .bDeviceClass           = USB_CLASS_COMM,
  91         .idVendor               = __constant_cpu_to_le16(NOKIA_VENDOR_ID),
  92         .idProduct              = __constant_cpu_to_le16(NOKIA_PRODUCT_ID),
  93         /* .iManufacturer = DYNAMIC */
  94         /* .iProduct = DYNAMIC */
  95         .bNumConfigurations =   1,
  96 };
  97
  98 /*-------------------------------------------------------------------------*/
  99
 100 /* Module */
 101 MODULE_DESCRIPTION("Nokia composite gadget driver for N900");
 102 MODULE_AUTHOR("Felipe Balbi");
 103 MODULE_LICENSE("GPL");
 104
 105 /*-------------------------------------------------------------------------*/
 106
 107 static u8 hostaddr[ETH_ALEN];
 108
 109 static int __init nokia_bind_config(struct usb_configuration *c)
 110 {
 111         int status = 0;
 112
 113         status = phonet_bind_config(c);
 114         if (status)
 115                 printk(KERN_DEBUG "could not bind phonet config\n");
 116
 117         status = obex_bind_config(c, 0);
 118         if (status)
 119                 printk(KERN_DEBUG "could not bind obex config %d\n", 0);
 120
 121         status = obex_bind_config(c, 1);
 122         if (status)
 123                 printk(KERN_DEBUG "could not bind obex config %d\n", 0);
 124
 125         status = acm_bind_config(c, 2);
 126         if (status)
 127                 printk(KERN_DEBUG "could not bind acm config\n");
 128
 129         status = ecm_bind_config(c, hostaddr);
 130         if (status)
 131                 printk(KERN_DEBUG "could not bind ecm config\n");
 132
 133         return status;
 134 }
 135
 136 static struct usb_configuration nokia_config_500ma_driver = {
 137         .label          = "Bus Powered",
 138         .bConfigurationValue = 1,
 139         /* .iConfiguration = DYNAMIC */
 140         .bmAttributes   = USB_CONFIG_ATT_ONE,
 141         .bMaxPower      = 250, /* 500mA */
 142 };
 143
 144 static struct usb_configuration nokia_config_100ma_driver = {
 145         .label          = "Self Powered",
 146         .bConfigurationValue = 2,
 147         /* .iConfiguration = DYNAMIC */
 148         .bmAttributes   = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER,
 149         .bMaxPower      = 50, /* 100 mA */
 150 };
 151
 152 static int __init nokia_bind(struct usb_composite_dev *cdev)
 153 {
 154         int                     gcnum;
 155         struct usb_gadget       *gadget = cdev->gadget;
 156         int                     status;
 157
 158         status = gphonet_setup(cdev->gadget);
 159         if (status < 0)
 160                 goto err_phonet;
 161
 162         status = gserial_setup(cdev->gadget, 3);
 163         if (status < 0)
 164                 goto err_serial;
 165
 166         status = gether_setup(cdev->gadget, hostaddr);
 167         if (status < 0)
 168                 goto err_ether;
 169
 170         status = usb_string_id(cdev);
 171         if (status < 0)
 172                 goto err_usb;
 173         strings_dev[STRING_MANUFACTURER_IDX].id = status;
 174
 175         device_desc.iManufacturer = status;
 176
 177         status = usb_string_id(cdev);
 178         if (status < 0)
 179                 goto err_usb;
 180         strings_dev[STRING_PRODUCT_IDX].id = status;
 181
 182         device_desc.iProduct = status;
 183
 184         /* config description */
 185         status = usb_string_id(cdev);
 186         if (status < 0)
 187                 goto err_usb;
 188         strings_dev[STRING_DESCRIPTION_IDX].id = status;
 189
 190         nokia_config_500ma_driver.iConfiguration = status;
 191         nokia_config_100ma_driver.iConfiguration = status;
 192
 193         /* set up other descriptors */
 194         gcnum = usb_gadget_controller_number(gadget);
 195         if (gcnum >= 0)
 196                 device_desc.bcdDevice = cpu_to_le16(NOKIA_VERSION_NUM);
 197         else {
 198                 /* this should only work with hw that supports altsettings
 199                  * and several endpoints, anything else, panic.
 200                  */
 201                 pr_err("nokia_bind: controller '%s' not recognized\n",
 202                         gadget->name);
 203                 goto err_usb;
 204         }
 205
 206         /* finally register the configuration */
 207         status = usb_add_config(cdev, &nokia_config_500ma_driver,
 208                         nokia_bind_config);
 209         if (status < 0)
 210                 goto err_usb;
 211
 212         status = usb_add_config(cdev, &nokia_config_100ma_driver,
 213                         nokia_bind_config);
 214         if (status < 0)
 215                 goto err_usb;
 216
 217         dev_info(&gadget->dev, "%s\n", NOKIA_LONG_NAME);
 218
 219         return 0;
 220
 221 err_usb:
 222         gether_cleanup();
 223 err_ether:
 224         gserial_cleanup();
 225 err_serial:
 226         gphonet_cleanup();
 227 err_phonet:
 228         return status;
 229 }
 230
 231 static int __exit nokia_unbind(struct usb_composite_dev *cdev)
 232 {
 233         gphonet_cleanup();
 234         gserial_cleanup();
 235         gether_cleanup();
 236
 237         return 0;
 238 }
 239
 240 static struct usb_composite_driver nokia_driver = {
 241         .name           = "g_nokia",
 242         .dev            = &device_desc,
 243         .strings        = dev_strings,
 244         .unbind         = __exit_p(nokia_unbind),
 245 };
 246
 247 static int __init nokia_init(void)
 248 {
 249         return usb_composite_probe(&nokia_driver, nokia_bind);
 250 }
 251 module_init(nokia_init);
 252
 253 static void __exit nokia_cleanup(void)
 254 {
 255         usb_composite_unregister(&nokia_driver);
 256 }
 257 module_exit(nokia_cleanup);
 258