diff options
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/gadget/Kconfig | 48 | ||||
| -rw-r--r-- | drivers/usb/gadget/Makefile | 6 | ||||
| -rw-r--r-- | drivers/usb/gadget/android.c | 417 | ||||
| -rw-r--r-- | drivers/usb/gadget/composite.c | 193 | ||||
| -rw-r--r-- | drivers/usb/gadget/f_acm.c | 40 | ||||
| -rw-r--r-- | drivers/usb/gadget/f_adb.c | 655 | ||||
| -rw-r--r-- | drivers/usb/gadget/f_mass_storage.c | 79 | ||||
| -rw-r--r-- | drivers/usb/gadget/f_mtp.c | 1273 | ||||
| -rw-r--r-- | drivers/usb/gadget/f_rndis.c | 95 | ||||
| -rw-r--r-- | drivers/usb/gadget/storage_common.c | 6 | ||||
| -rw-r--r-- | drivers/usb/gadget/u_ether.c | 1 | ||||
| -rw-r--r-- | drivers/usb/gadget/u_ether.h | 2 |
12 files changed, 2785 insertions, 30 deletions
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index bd1751e37f1d..08da28181280 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -837,6 +837,54 @@ config USB_G_PRINTER For more information, see Documentation/usb/gadget_printer.txt which includes sample code for accessing the device file. +config USB_ANDROID + boolean "Android Gadget" + depends on SWITCH + help + The Android gadget driver supports multiple USB functions. + The functions can be configured via a board file and may be + enabled and disabled dynamically. + +config USB_ANDROID_ACM + boolean "Android gadget ACM serial function" + depends on USB_ANDROID + help + Provides ACM serial function for android gadget driver. + +config USB_ANDROID_ADB + boolean "Android gadget adb function" + depends on USB_ANDROID + help + Provides adb function for android gadget driver. + +config USB_ANDROID_MASS_STORAGE + boolean "Android gadget mass storage function" + depends on USB_ANDROID && SWITCH + help + Provides USB mass storage function for android gadget driver. + +config USB_ANDROID_MTP + boolean "Android MTP function" + depends on USB_ANDROID + help + Provides Media Transfer Protocol (MTP) support for android gadget driver. + +config USB_ANDROID_RNDIS + boolean "Android gadget RNDIS ethernet function" + depends on USB_ANDROID + help + Provides RNDIS ethernet function for android gadget driver. + +config USB_ANDROID_RNDIS_WCEIS + boolean "Use Windows Internet Sharing Class/SubClass/Protocol" + depends on USB_ANDROID_RNDIS + help + Causes the driver to look like a Windows-compatible Internet + Sharing device, so Windows auto-detects it. + + If you enable this option, the device is no longer CDC ethernet + compatible. + config USB_CDC_COMPOSITE tristate "CDC Composite Device (Ethernet and ACM)" depends on NET diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index f6f822d2841a..d51e31f5592c 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -67,4 +67,10 @@ obj-$(CONFIG_USB_G_DBGP) += g_dbgp.o obj-$(CONFIG_USB_G_MULTI) += g_multi.o obj-$(CONFIG_USB_G_NOKIA) += g_nokia.o obj-$(CONFIG_USB_G_WEBCAM) += g_webcam.o +obj-$(CONFIG_USB_ANDROID) += android.o +obj-$(CONFIG_USB_ANDROID_ACM) += f_acm.o u_serial.o +obj-$(CONFIG_USB_ANDROID_ADB) += f_adb.o +obj-$(CONFIG_USB_ANDROID_MASS_STORAGE) += f_mass_storage.o +obj-$(CONFIG_USB_ANDROID_MTP) += f_mtp.o +obj-$(CONFIG_USB_ANDROID_RNDIS) += f_rndis.o u_ether.o diff --git a/drivers/usb/gadget/android.c b/drivers/usb/gadget/android.c new file mode 100644 index 000000000000..ed4f5739cb9c --- /dev/null +++ b/drivers/usb/gadget/android.c @@ -0,0 +1,417 @@ +/* + * Gadget Driver for Android + * + * Copyright (C) 2008 Google, Inc. + * Author: Mike Lockwood <lockwood@android.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * 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. + * + */ + +/* #define DEBUG */ +/* #define VERBOSE_DEBUG */ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/fs.h> + +#include <linux/delay.h> +#include <linux/kernel.h> +#include <linux/utsname.h> +#include <linux/platform_device.h> + +#include <linux/usb/android_composite.h> +#include <linux/usb/ch9.h> +#include <linux/usb/composite.h> +#include <linux/usb/gadget.h> + +#include "gadget_chips.h" + +/* + * 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 "usbstring.c" +#include "config.c" +#include "epautoconf.c" +#include "composite.c" + +MODULE_AUTHOR("Mike Lockwood"); +MODULE_DESCRIPTION("Android Composite USB Driver"); +MODULE_LICENSE("GPL"); +MODULE_VERSION("1.0"); + +static const char longname[] = "Gadget Android"; + +/* Default vendor and product IDs, overridden by platform data */ +#define VENDOR_ID 0x18D1 +#define PRODUCT_ID 0x0001 + +struct android_dev { + struct usb_composite_dev *cdev; + struct usb_configuration *config; + int num_products; + struct android_usb_product *products; + int num_functions; + char **functions; + + int product_id; + int version; +}; + +static struct android_dev *_android_dev; + +/* string IDs are assigned dynamically */ + +#define STRING_MANUFACTURER_IDX 0 +#define STRING_PRODUCT_IDX 1 +#define STRING_SERIAL_IDX 2 + +/* String Table */ +static struct usb_string strings_dev[] = { + /* These dummy values should be overridden by platform data */ + [STRING_MANUFACTURER_IDX].s = "Android", + [STRING_PRODUCT_IDX].s = "Android", + [STRING_SERIAL_IDX].s = "0123456789ABCDEF", + { } /* 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 = sizeof(device_desc), + .bDescriptorType = USB_DT_DEVICE, + .bcdUSB = __constant_cpu_to_le16(0x0200), + .bDeviceClass = USB_CLASS_PER_INTERFACE, + .idVendor = __constant_cpu_to_le16(VENDOR_ID), + .idProduct = __constant_cpu_to_le16(PRODUCT_ID), + .bcdDevice = __constant_cpu_to_le16(0xffff), + .bNumConfigurations = 1, +}; + +static struct list_head _functions = LIST_HEAD_INIT(_functions); +static int _registered_function_count = 0; + +static struct android_usb_function *get_function(const char *name) +{ + struct android_usb_function *f; + list_for_each_entry(f, &_functions, list) { + if (!strcmp(name, f->name)) + return f; + } + return 0; +} + +static void bind_functions(struct android_dev *dev) +{ + struct android_usb_function *f; + char **functions = dev->functions; + int i; + + for (i = 0; i < dev->num_functions; i++) { + char *name = *functions++; + f = get_function(name); + if (f) + f->bind_config(dev->config); + else + printk(KERN_ERR "function %s not found in bind_functions\n", name); + } +} + +static int android_bind_config(struct usb_configuration *c) +{ + struct android_dev *dev = _android_dev; + + printk(KERN_DEBUG "android_bind_config\n"); + dev->config = c; + + /* bind our functions if they have all registered */ + if (_registered_function_count == dev->num_functions) + bind_functions(dev); + + return 0; +} + +static int android_setup_config(struct usb_configuration *c, + const struct usb_ctrlrequest *ctrl); + +static struct usb_configuration android_config_driver = { + .label = "android", + .bind = android_bind_config, + .setup = android_setup_config, + .bConfigurationValue = 1, + .bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER, + .bMaxPower = 0xFA, /* 500ma */ +}; + +static int android_setup_config(struct usb_configuration *c, + const struct usb_ctrlrequest *ctrl) +{ + int i; + int ret = -EOPNOTSUPP; + + for (i = 0; i < android_config_driver.next_interface_id; i++) { + if (android_config_driver.interface[i]->setup) { + ret = android_config_driver.interface[i]->setup( + android_config_driver.interface[i], ctrl); + if (ret >= 0) + return ret; + } + } + return ret; +} + +static int product_has_function(struct android_usb_product *p, + struct usb_function *f) +{ + char **functions = p->functions; + int count = p->num_functions; + const char *name = f->name; + int i; + + for (i = 0; i < count; i++) { + if (!strcmp(name, *functions++)) + return 1; + } + return 0; +} + +static int product_matches_functions(struct android_usb_product *p) +{ + struct usb_function *f; + list_for_each_entry(f, &android_config_driver.functions, list) { + if (product_has_function(p, f) == !!f->disabled) + return 0; + } + return 1; +} + +static int get_product_id(struct android_dev *dev) +{ + struct android_usb_product *p = dev->products; + int count = dev->num_products; + int i; + + if (p) { + for (i = 0; i < count; i++, p++) { + if (product_matches_functions(p)) + return p->product_id; + } + } + /* use default product ID */ + return dev->product_id; +} + +static int android_bind(struct usb_composite_dev *cdev) +{ + struct android_dev *dev = _android_dev; + struct usb_gadget *gadget = cdev->gadget; + int gcnum, id, product_id, ret; + + printk(KERN_INFO "android_bind\n"); + + /* Allocate string descriptor numbers ... note that string + * contents can be overridden by the composite_dev glue. + */ + id = usb_string_id(cdev); + if (id < 0) + return id; + strings_dev[STRING_MANUFACTURER_IDX].id = id; + device_desc.iManufacturer = id; + + id = usb_string_id(cdev); + if (id < 0) + return id; + strings_dev[STRING_PRODUCT_IDX].id = id; + device_desc.iProduct = id; + + id = usb_string_id(cdev); + if (id < 0) + return id; + strings_dev[STRING_SERIAL_IDX].id = id; + device_desc.iSerialNumber = id; + + /* register our configuration */ + ret = usb_add_config(cdev, &android_config_driver); + if (ret) { + printk(KERN_ERR "usb_add_config failed\n"); + return ret; + } + + gcnum = usb_gadget_controller_number(gadget); + if (gcnum >= 0) + device_desc.bcdDevice = cpu_to_le16(0x0200 + gcnum); + else { + /* gadget zero is so simple (for now, no altsettings) that + * it SHOULD NOT have problems with bulk-capable hardware. + * so just warn about unrcognized controllers -- don't panic. + * + * things like configuration and altsetting numbering + * can need hardware-specific attention though. + */ + pr_warning("%s: controller '%s' not recognized\n", + longname, gadget->name); + device_desc.bcdDevice = __constant_cpu_to_le16(0x9999); + } + + usb_gadget_set_selfpowered(gadget); + dev->cdev = cdev; + product_id = get_product_id(dev); + device_desc.idProduct = __constant_cpu_to_le16(product_id); + cdev->desc.idProduct = device_desc.idProduct; + + return 0; +} + +static struct usb_composite_driver android_usb_driver = { + .name = "android_usb", + .dev = &device_desc, + .strings = dev_strings, + .bind = android_bind, + .enable_function = android_enable_function, +}; + +void android_register_function(struct android_usb_function *f) +{ + struct android_dev *dev = _android_dev; + + printk(KERN_INFO "android_register_function %s\n", f->name); + list_add_tail(&f->list, &_functions); + _registered_function_count++; + + /* bind our functions if they have all registered + * and the main driver has bound. + */ + if (dev && dev->config && _registered_function_count == dev->num_functions) + bind_functions(dev); +} + +void android_enable_function(struct usb_function *f, int enable) +{ + struct android_dev *dev = _android_dev; + int disable = !enable; + int product_id; + + if (!!f->disabled != disable) { + usb_function_set_enabled(f, !disable); + +#ifdef CONFIG_USB_ANDROID_RNDIS + if (!strcmp(f->name, "rndis")) { + struct usb_function *func; + + /* We need to specify the COMM class in the device descriptor + * if we are using RNDIS. + */ + if (enable) +#ifdef CONFIG_USB_ANDROID_RNDIS_WCEIS + dev->cdev->desc.bDeviceClass = USB_CLASS_WIRELESS_CONTROLLER; +#else + dev->cdev->desc.bDeviceClass = USB_CLASS_COMM; +#endif + else + dev->cdev->desc.bDeviceClass = USB_CLASS_PER_INTERFACE; + + /* Windows does not support other interfaces when RNDIS is enabled, + * so we disable UMS and MTP when RNDIS is on. + */ + list_for_each_entry(func, &android_config_driver.functions, list) { + if (!strcmp(func->name, "usb_mass_storage") + || !strcmp(func->name, "mtp")) { + usb_function_set_enabled(func, !enable); + } + } + } +#endif + + product_id = get_product_id(dev); + device_desc.idProduct = __constant_cpu_to_le16(product_id); + if (dev->cdev) + dev->cdev->desc.idProduct = device_desc.idProduct; + usb_composite_force_reset(dev->cdev); + } +} + +static int android_probe(struct platform_device *pdev) +{ + struct android_usb_platform_data *pdata = pdev->dev.platform_data; + struct android_dev *dev = _android_dev; + + printk(KERN_INFO "android_probe pdata: %p\n", pdata); + + if (pdata) { + dev->products = pdata->products; + dev->num_products = pdata->num_products; + dev->functions = pdata->functions; + dev->num_functions = pdata->num_functions; + if (pdata->vendor_id) + device_desc.idVendor = + __constant_cpu_to_le16(pdata->vendor_id); + if (pdata->product_id) { + dev->product_id = pdata->product_id; + device_desc.idProduct = + __constant_cpu_to_le16(pdata->product_id); + } + if (pdata->version) + dev->version = pdata->version; + + if (pdata->product_name) + strings_dev[STRING_PRODUCT_IDX].s = pdata->product_name; + if (pdata->manufacturer_name) + strings_dev[STRING_MANUFACTURER_IDX].s = + pdata->manufacturer_name; + if (pdata->serial_number) + strings_dev[STRING_SERIAL_IDX].s = pdata->serial_number; + } + + return usb_composite_register(&android_usb_driver); +} + +static struct platform_driver android_platform_driver = { + .driver = { .name = "android_usb", }, + .probe = android_probe, +}; + +static int __init init(void) +{ + struct android_dev *dev; + + printk(KERN_INFO "android init\n"); + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) + return -ENOMEM; + + /* set default values, which should be overridden by platform data */ + dev->product_id = PRODUCT_ID; + _android_dev = dev; + + return platform_driver_register(&android_platform_driver); +} +module_init(init); + +static void __exit cleanup(void) +{ + usb_composite_unregister(&android_usb_driver); + platform_driver_unregister(&android_platform_driver); + kfree(_android_dev); + _android_dev = NULL; +} +module_exit(cleanup); diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 1160c55de7f2..840c41e2f33e 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -71,6 +71,59 @@ MODULE_PARM_DESC(iSerialNumber, "SerialNumber string"); /*-------------------------------------------------------------------------*/ +static ssize_t enable_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct usb_function *f = dev_get_drvdata(dev); + return sprintf(buf, "%d\n", !f->disabled); +} + +static ssize_t enable_store( + struct device *dev, struct device_attribute *attr, + const char *buf, size_t size) +{ + struct usb_function *f = dev_get_drvdata(dev); + struct usb_composite_driver *driver = f->config->cdev->driver; + int value; + + sscanf(buf, "%d", &value); + if (driver->enable_function) + driver->enable_function(f, value); + else + usb_function_set_enabled(f, value); + + return size; +} + +static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, enable_show, enable_store); + +void usb_function_set_enabled(struct usb_function *f, int enabled) +{ + f->disabled = !enabled; + kobject_uevent(&f->dev->kobj, KOBJ_CHANGE); +} + + +void usb_composite_force_reset(struct usb_composite_dev *cdev) +{ + unsigned long flags; + + spin_lock_irqsave(&cdev->lock, flags); + /* force reenumeration */ + if (cdev && cdev->gadget && + cdev->gadget->speed != USB_SPEED_UNKNOWN) { + /* avoid sending a disconnect switch event until after we disconnect */ + cdev->mute_switch = 1; + spin_unlock_irqrestore(&cdev->lock, flags); + + usb_gadget_disconnect(cdev->gadget); + msleep(10); + usb_gadget_connect(cdev->gadget); + } else { + spin_unlock_irqrestore(&cdev->lock, flags); + } +} + /** * usb_add_function() - add a function to a configuration * @config: the configuration @@ -88,15 +141,30 @@ MODULE_PARM_DESC(iSerialNumber, "SerialNumber string"); int usb_add_function(struct usb_configuration *config, struct usb_function *function) { + struct usb_composite_dev *cdev = config->cdev; int value = -EINVAL; + int index; - DBG(config->cdev, "adding '%s'/%p to config '%s'/%p\n", + DBG(cdev, "adding '%s'/%p to config '%s'/%p\n", function->name, function, config->label, config); if (!function->set_alt || !function->disable) goto done; + index = atomic_inc_return(&cdev->driver->function_count); + function->dev = device_create(cdev->driver->class, NULL, + MKDEV(0, index), NULL, function->name); + if (IS_ERR(function->dev)) + return PTR_ERR(function->dev); + + value = device_create_file(function->dev, &dev_attr_enable); + if (value < 0) { + device_destroy(cdev->driver->class, MKDEV(0, index)); + return value; + } + dev_set_drvdata(function->dev, function); + function->config = config; list_add_tail(&function->list, &config->functions); @@ -122,7 +190,7 @@ int usb_add_function(struct usb_configuration *config, done: if (value) - DBG(config->cdev, "adding '%s'/%p --> %d\n", + DBG(cdev, "adding '%s'/%p --> %d\n", function->name, function, value); return value; } @@ -232,17 +300,19 @@ static int config_buf(struct usb_configuration *config, enum usb_device_speed speed, void *buf, u8 type) { struct usb_config_descriptor *c = buf; + struct usb_interface_descriptor *intf; void *next = buf + USB_DT_CONFIG_SIZE; int len = USB_BUFSIZ - USB_DT_CONFIG_SIZE; struct usb_function *f; int status; + int interfaceCount = 0; + u8 *dest; /* write the config descriptor */ c = buf; c->bLength = USB_DT_CONFIG_SIZE; c->bDescriptorType = type; - /* wTotalLength is written later */ - c->bNumInterfaces = config->next_interface_id; + /* wTotalLength and bNumInterfaces are written later */ c->bConfigurationValue = config->bConfigurationValue; c->iConfiguration = config->iConfiguration; c->bmAttributes = USB_CONFIG_ATT_ONE | config->bmAttributes; @@ -261,23 +331,40 @@ static int config_buf(struct usb_configuration *config, /* add each function's descriptors */ list_for_each_entry(f, &config->functions, list) { struct usb_descriptor_header **descriptors; + struct usb_descriptor_header *descriptor; if (speed == USB_SPEED_HIGH) descriptors = f->hs_descriptors; else descriptors = f->descriptors; - if (!descriptors) + if (f->disabled || !descriptors || descriptors[0] == NULL) continue; status = usb_descriptor_fillbuf(next, len, (const struct usb_descriptor_header **) descriptors); if (status < 0) return status; + + /* set interface numbers dynamically */ + dest = next; + while ((descriptor = *descriptors++) != NULL) { + intf = (struct usb_interface_descriptor *)dest; + if (intf->bDescriptorType == USB_DT_INTERFACE) { + /* don't increment bInterfaceNumber for alternate settings */ + if (intf->bAlternateSetting == 0) + intf->bInterfaceNumber = interfaceCount++; + else + intf->bInterfaceNumber = interfaceCount - 1; + } + dest += intf->bLength; + } + len -= status; next += status; } len = next - buf; c->wTotalLength = cpu_to_le16(len); + c->bNumInterfaces = interfaceCount; return len; } @@ -424,6 +511,8 @@ static int set_config(struct usb_composite_dev *cdev, if (!f) break; + if (f->disabled) + continue; /* * Record which endpoints are used by the function. This is used @@ -463,6 +552,8 @@ static int set_config(struct usb_composite_dev *cdev, power = c->bMaxPower ? (2 * c->bMaxPower) : CONFIG_USB_GADGET_VBUS_DRAW; done: usb_gadget_vbus_draw(gadget, power); + + schedule_work(&cdev->switch_work); return result; } @@ -822,6 +913,21 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) case USB_DT_STRING: value = get_string(cdev, req->buf, w_index, w_value & 0xff); + + /* Allow functions to handle USB_DT_STRING. + * This is required for MTP. + */ + if (value < 0) { + struct usb_configuration *cfg; + list_for_each_entry(cfg, &cdev->configs, list) { + if (cfg && cfg->setup) { + value = cfg->setup(cfg, ctrl); + if (value >= 0) + break; + } + } + } + if (value >= 0) value = min(w_length, (u16) value); break; @@ -847,11 +953,11 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) case USB_REQ_GET_CONFIGURATION: if (ctrl->bRequestType != USB_DIR_IN) goto unknown; - if (cdev->config) + if (cdev->config) { *(u8 *)req->buf = cdev->config->bConfigurationValue; - else + value = min(w_length, (u16) 1); + } else *(u8 *)req->buf = 0; - value = min(w_length, (u16) 1); break; /* function drivers must handle get/set altsetting; if there's @@ -901,6 +1007,9 @@ unknown: */ switch (ctrl->bRequestType & USB_RECIP_MASK) { case USB_RECIP_INTERFACE: + if (cdev->config == NULL) + return value; + f = cdev->config->interface[intf]; break; @@ -925,6 +1034,25 @@ unknown: value = c->setup(c, ctrl); } + /* If the vendor request is not processed (value < 0), + * call all device registered configure setup callbacks + * to process it. + * This is used to handle the following cases: + * - vendor request is for the device and arrives before + * setconfiguration. + * - Some devices are required to handle vendor request before + * setconfiguration such as MTP, USBNET. + */ + + if (value < 0) { + struct usb_configuration *cfg; + + list_for_each_entry(cfg, &cdev->configs, list) { + if (cfg && cfg->setup) + value = cfg->setup(cfg, ctrl); + } + } + goto done; } @@ -956,8 +1084,14 @@ static void composite_disconnect(struct usb_gadget *gadget) spin_lock_irqsave(&cdev->lock, flags); if (cdev->config) reset_config(cdev); + if (composite->disconnect) composite->disconnect(cdev); + + if (cdev->mute_switch) + cdev->mute_switch = 0; + else + schedule_work(&cdev->switch_work); spin_unlock_irqrestore(&cdev->lock, flags); } @@ -1019,6 +1153,8 @@ composite_unbind(struct usb_gadget *gadget) kfree(cdev->req->buf); usb_ep_free_request(gadget->ep0, cdev->req); } + + switch_dev_unregister(&cdev->sdev); kfree(cdev); set_gadget_data(gadget, NULL); device_remove_file(&gadget->dev, &dev_attr_suspended); @@ -1047,6 +1183,19 @@ string_override(struct usb_gadget_strings **tab, u8 id, const char *s) } } +static void +composite_switch_work(struct work_struct *data) +{ + struct usb_composite_dev *cdev = + container_of(data, struct usb_composite_dev, switch_work); + struct usb_configuration *config = cdev->config; + + if (config) + switch_set_state(&cdev->sdev, config->bConfigurationValue); + else + switch_set_state(&cdev->sdev, 0); +} + static int composite_bind(struct usb_gadget *gadget) { struct usb_composite_dev *cdev; @@ -1098,6 +1247,12 @@ static int composite_bind(struct usb_gadget *gadget) if (status < 0) goto fail; + cdev->sdev.name = "usb_configuration"; + status = switch_dev_register(&cdev->sdev); + if (status < 0) + goto fail; + INIT_WORK(&cdev->switch_work, composite_switch_work); + cdev->desc = *composite->dev; cdev->desc.bMaxPacketSize0 = gadget->ep0->maxpacket; @@ -1172,6 +1327,23 @@ composite_resume(struct usb_gadget *gadget) cdev->suspended = 0; } +static int +composite_uevent(struct device *dev, struct kobj_uevent_env *env) +{ + struct usb_function *f = dev_get_drvdata(dev); + + if (!f) { + /* this happens when the device is first created */ + return 0; + } + + if (add_uevent_var(env, "FUNCTION=%s", f->name)) + return -ENOMEM; + if (add_uevent_var(env, "ENABLED=%d", !f->disabled)) + return -ENOMEM; + return 0; +} + /*-------------------------------------------------------------------------*/ static struct usb_gadget_driver composite_driver = { @@ -1217,6 +1389,11 @@ int usb_composite_register(struct usb_composite_driver *driver) composite_driver.driver.name = driver->name; composite = driver; + driver->class = class_create(THIS_MODULE, "usb_composite"); + if (IS_ERR(driver->class)) + return PTR_ERR(driver->class); + driver->class->dev_uevent = composite_uevent; + return usb_gadget_register_driver(&composite_driver); } diff --git a/drivers/usb/gadget/f_acm.c b/drivers/usb/gadget/f_acm.c index d47a123f15ab..e3e5410d922f 100644 --- a/drivers/usb/gadget/f_acm.c +++ b/drivers/usb/gadget/f_acm.c @@ -17,6 +17,7 @@ #include <linux/slab.h> #include <linux/kernel.h> #include <linux/device.h> +#include <linux/usb/android_composite.h> #include "u_serial.h" #include "gadget_chips.h" @@ -405,10 +406,10 @@ static int acm_set_alt(struct usb_function *f, unsigned intf, unsigned alt) usb_ep_disable(acm->notify); } else { VDBG(cdev, "init acm ctrl interface %d\n", intf); - acm->notify_desc = ep_choose(cdev->gadget, - acm->hs.notify, - acm->fs.notify); } + acm->notify_desc = ep_choose(cdev->gadget, + acm->hs.notify, + acm->fs.notify); usb_ep_enable(acm->notify, acm->notify_desc); acm->notify->driver_data = acm; @@ -418,11 +419,11 @@ static int acm_set_alt(struct usb_function *f, unsigned intf, unsigned alt) gserial_disconnect(&acm->port); } else { DBG(cdev, "activate acm ttyGS%d\n", acm->port_num); - acm->port.in_desc = ep_choose(cdev->gadget, - acm->hs.in, acm->fs.in); - acm->port.out_desc = ep_choose(cdev->gadget, - acm->hs.out, acm->fs.out); } + acm->port.in_desc = ep_choose(cdev->gadget, + acm->hs.in, acm->fs.in); + acm->port.out_desc = ep_choose(cdev->gadget, + acm->hs.out, acm->fs.out); gserial_connect(&acm->port, acm->port_num); } else @@ -782,3 +783,28 @@ int acm_bind_config(struct usb_configuration *c, u8 port_num) kfree(acm); return status; } + +#ifdef CONFIG_USB_ANDROID_ACM + +int acm_function_bind_config(struct usb_configuration *c) +{ + int ret = acm_bind_config(c, 0); + if (ret == 0) + gserial_setup(c->cdev->gadget, 1); + return ret; +} + +static struct android_usb_function acm_function = { + .name = "acm", + .bind_config = acm_function_bind_config, +}; + +static int __init init(void) +{ + printk(KERN_INFO "f_acm init\n"); + android_register_function(&acm_function); + return 0; +} +module_init(init); + +#endif /* CONFIG_USB_ANDROID_ACM */ diff --git a/drivers/usb/gadget/f_adb.c b/drivers/usb/gadget/f_adb.c new file mode 100644 index 000000000000..a0b0774b9556 --- /dev/null +++ b/drivers/usb/gadget/f_adb.c @@ -0,0 +1,655 @@ +/* + * Gadget Driver for Android ADB + * + * Copyright (C) 2008 Google, Inc. + * Author: Mike Lockwood <lockwood@android.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * 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. + * + */ + +/* #define DEBUG */ +/* #define VERBOSE_DEBUG */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/poll.h> +#include <linux/delay.h> +#include <linux/wait.h> +#include <linux/err.h> +#include <linux/interrupt.h> + +#include <linux/types.h> +#include <linux/device.h> +#include <linux/miscdevice.h> + +#include <linux/usb/android_composite.h> + +#define BULK_BUFFER_SIZE 4096 + +/* number of tx requests to allocate */ +#define TX_REQ_MAX 4 + +static const char shortname[] = "android_adb"; + +struct adb_dev { + struct usb_function function; + struct usb_composite_dev *cdev; + spinlock_t lock; + + struct usb_ep *ep_in; + struct usb_ep *ep_out; + + int online; + int error; + + atomic_t read_excl; + atomic_t write_excl; + atomic_t open_excl; + + struct list_head tx_idle; + + wait_queue_head_t read_wq; + wait_queue_head_t write_wq; + struct usb_request *rx_req; + int rx_done; +}; + +static struct usb_interface_descriptor adb_interface_desc = { + .bLength = USB_DT_INTERFACE_SIZE, + .bDescriptorType = USB_DT_INTERFACE, + .bInterfaceNumber = 0, + .bNumEndpoints = 2, + .bInterfaceClass = 0xFF, + .bInterfaceSubClass = 0x42, + .bInterfaceProtocol = 1, +}; + +static struct usb_endpoint_descriptor adb_highspeed_in_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = __constant_cpu_to_le16(512), +}; + +static struct usb_endpoint_descriptor adb_highspeed_out_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = __constant_cpu_to_le16(512), +}; + +static struct usb_endpoint_descriptor adb_fullspeed_in_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_endpoint_descriptor adb_fullspeed_out_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_descriptor_header *fs_adb_descs[] = { + (struct usb_descriptor_header *) &adb_interface_desc, + (struct usb_descriptor_header *) &adb_fullspeed_in_desc, + (struct usb_descriptor_header *) &adb_fullspeed_out_desc, + NULL, +}; + +static struct usb_descriptor_header *hs_adb_descs[] = { + (struct usb_descriptor_header *) &adb_interface_desc, + (struct usb_descriptor_header *) &adb_highspeed_in_desc, + (struct usb_descriptor_header *) &adb_highspeed_out_desc, + NULL, +}; + + +/* temporary variable used between adb_open() and adb_gadget_bind() */ +static struct adb_dev *_adb_dev; + +static atomic_t adb_enable_excl; + +static inline struct adb_dev *func_to_dev(struct usb_function *f) +{ + return container_of(f, struct adb_dev, function); +} + + +static struct usb_request *adb_request_new(struct usb_ep *ep, int buffer_size) +{ + struct usb_request *req = usb_ep_alloc_request(ep, GFP_KERNEL); + if (!req) + return NULL; + + /* now allocate buffers for the requests */ + req->buf = kmalloc(buffer_size, GFP_KERNEL); + if (!req->buf) { + usb_ep_free_request(ep, req); + return NULL; + } + + return req; +} + +static void adb_request_free(struct usb_request *req, struct usb_ep *ep) +{ + if (req) { + kfree(req->buf); + usb_ep_free_request(ep, req); + } +} + +static inline int _lock(atomic_t *excl) +{ + if (atomic_inc_return(excl) == 1) { + return 0; + } else { + atomic_dec(excl); + return -1; + } +} + +static inline void _unlock(atomic_t *excl) +{ + atomic_dec(excl); +} + +/* add a request to the tail of a list */ +void req_put(struct adb_dev *dev, struct list_head *head, + struct usb_request *req) +{ + unsigned long flags; + + spin_lock_irqsave(&dev->lock, flags); + list_add_tail(&req->list, head); + spin_unlock_irqrestore(&dev->lock, flags); +} + +/* remove a request from the head of a list */ +struct usb_request *req_get(struct adb_dev *dev, struct list_head *head) +{ + unsigned long flags; + struct usb_request *req; + + spin_lock_irqsave(&dev->lock, flags); + if (list_empty(head)) { + req = 0; + } else { + req = list_first_entry(head, struct usb_request, list); + list_del(&req->list); + } + spin_unlock_irqrestore(&dev->lock, flags); + return req; +} + +static void adb_complete_in(struct usb_ep *ep, struct usb_request *req) +{ + struct adb_dev *dev = _adb_dev; + + if (req->status != 0) + dev->error = 1; + + req_put(dev, &dev->tx_idle, req); + + wake_up(&dev->write_wq); +} + +static void adb_complete_out(struct usb_ep *ep, struct usb_request *req) +{ + struct adb_dev *dev = _adb_dev; + + dev->rx_done = 1; + if (req->status != 0) + dev->error = 1; + + wake_up(&dev->read_wq); +} + +static int __init create_bulk_endpoints(struct adb_dev *dev, + struct usb_endpoint_descriptor *in_desc, + struct usb_endpoint_descriptor *out_desc) +{ + struct usb_composite_dev *cdev = dev->cdev; + struct usb_request *req; + struct usb_ep *ep; + int i; + + DBG(cdev, "create_bulk_endpoints dev: %p\n", dev); + + ep = usb_ep_autoconfig(cdev->gadget, in_desc); + if (!ep) { + DBG(cdev, "usb_ep_autoconfig for ep_in failed\n"); + return -ENODEV; + } + DBG(cdev, "usb_ep_autoconfig for ep_in got %s\n", ep->name); + ep->driver_data = dev; /* claim the endpoint */ + dev->ep_in = ep; + + ep = usb_ep_autoconfig(cdev->gadget, out_desc); + if (!ep) { + DBG(cdev, "usb_ep_autoconfig for ep_out failed\n"); + return -ENODEV; + } + DBG(cdev, "usb_ep_autoconfig for adb ep_out got %s\n", ep->name); + ep->driver_data = dev; /* claim the endpoint */ + dev->ep_out = ep; + + /* now allocate requests for our endpoints */ + req = adb_request_new(dev->ep_out, BULK_BUFFER_SIZE); + if (!req) + goto fail; + req->complete = adb_complete_out; + dev->rx_req = req; + + for (i = 0; i < TX_REQ_MAX; i++) { + req = adb_request_new(dev->ep_in, BULK_BUFFER_SIZE); + if (!req) + goto fail; + req->complete = adb_complete_in; + req_put(dev, &dev->tx_idle, req); + } + + return 0; + +fail: + printk(KERN_ERR "adb_bind() could not allocate requests\n"); + return -1; +} + +static ssize_t adb_read(struct file *fp, char __user *buf, + size_t count, loff_t *pos) +{ + struct adb_dev *dev = fp->private_data; + struct usb_composite_dev *cdev = dev->cdev; + struct usb_request *req; + int r = count, xfer; + int ret; + + DBG(cdev, "adb_read(%d)\n", count); + + if (count > BULK_BUFFER_SIZE) + return -EINVAL; + + if (_lock(&dev->read_excl)) + return -EBUSY; + + /* we will block until we're online */ + while (!(dev->online || dev->error)) { + DBG(cdev, "adb_read: waiting for online state\n"); + ret = wait_event_interruptible(dev->read_wq, + (dev->online || dev->error)); + if (ret < 0) { + _unlock(&dev->read_excl); + return ret; + } + } + if (dev->error) { + r = -EIO; + goto done; + } + +requeue_req: + /* queue a request */ + req = dev->rx_req; + req->length = count; + dev->rx_done = 0; + ret = usb_ep_queue(dev->ep_out, req, GFP_ATOMIC); + if (ret < 0) { + DBG(cdev, "adb_read: failed to queue req %p (%d)\n", req, ret); + r = -EIO; + dev->error = 1; + goto done; + } else { + DBG(cdev, "rx %p queue\n", req); + } + + /* wait for a request to complete */ + ret = wait_event_interruptible(dev->read_wq, dev->rx_done); + if (ret < 0) { + dev->error = 1; + r = ret; + goto done; + } + if (!dev->error) { + /* If we got a 0-len packet, throw it back and try again. */ + if (req->actual == 0) + goto requeue_req; + + DBG(cdev, "rx %p %d\n", req, req->actual); + xfer = (req->actual < count) ? req->actual : count; + if (copy_to_user(buf, req->buf, xfer)) + r = -EFAULT; + } else + r = -EIO; + +done: + _unlock(&dev->read_excl); + DBG(cdev, "adb_read returning %d\n", r); + return r; +} + +static ssize_t adb_write(struct file *fp, const char __user *buf, + size_t count, loff_t *pos) +{ + struct adb_dev *dev = fp->private_data; + struct usb_composite_dev *cdev = dev->cdev; + struct usb_request *req = 0; + int r = count, xfer; + int ret; + + DBG(cdev, "adb_write(%d)\n", count); + + if (_lock(&dev->write_excl)) + return -EBUSY; + + while (count > 0) { + if (dev->error) { + DBG(cdev, "adb_write dev->error\n"); + r = -EIO; + break; + } + + /* get an idle tx request to use */ + req = 0; + ret = wait_event_interruptible(dev->write_wq, + ((req = req_get(dev, &dev->tx_idle)) || dev->error)); + + if (ret < 0) { + r = ret; + break; + } + + if (req != 0) { + if (count > BULK_BUFFER_SIZE) + xfer = BULK_BUFFER_SIZE; + else + xfer = count; + if (copy_from_user(req->buf, buf, xfer)) { + r = -EFAULT; + break; + } + + req->length = xfer; + ret = usb_ep_queue(dev->ep_in, req, GFP_ATOMIC); + if (ret < 0) { + DBG(cdev, "adb_write: xfer error %d\n", ret); + dev->error = 1; + r = -EIO; + break; + } + + buf += xfer; + count -= xfer; + + /* zero this so we don't try to free it on error exit */ + req = 0; + } + } + + if (req) + req_put(dev, &dev->tx_idle, req); + + _unlock(&dev->write_excl); + DBG(cdev, "adb_write returning %d\n", r); + return r; +} + +static int adb_open(struct inode *ip, struct file *fp) +{ + printk(KERN_INFO "adb_open\n"); + if (_lock(&_adb_dev->open_excl)) + return -EBUSY; + + fp->private_data = _adb_dev; + + /* clear the error latch */ + _adb_dev->error = 0; + + return 0; +} + +static int adb_release(struct inode *ip, struct file *fp) +{ + printk(KERN_INFO "adb_release\n"); + _unlock(&_adb_dev->open_excl); + return 0; +} + +/* file operations for ADB device /dev/android_adb */ +static struct file_operations adb_fops = { + .owner = THIS_MODULE, + .read = adb_read, + .write = adb_write, + .open = adb_open, + .release = adb_release, +}; + +static struct miscdevice adb_device = { + .minor = MISC_DYNAMIC_MINOR, + .name = shortname, + .fops = &adb_fops, +}; + +static int adb_enable_open(struct inode *ip, struct file *fp) +{ + if (atomic_inc_return(&adb_enable_excl) != 1) { + atomic_dec(&adb_enable_excl); + return -EBUSY; + } + + printk(KERN_INFO "enabling adb\n"); + android_enable_function(&_adb_dev->function, 1); + + return 0; +} + +static int adb_enable_release(struct inode *ip, struct file *fp) +{ + printk(KERN_INFO "disabling adb\n"); + android_enable_function(&_adb_dev->function, 0); + atomic_dec(&adb_enable_excl); + return 0; +} + +static const struct file_operations adb_enable_fops = { + .owner = THIS_MODULE, + .open = adb_enable_open, + .release = adb_enable_release, +}; + +static struct miscdevice adb_enable_device = { + .minor = MISC_DYNAMIC_MINOR, + .name = "android_adb_enable", + .fops = &adb_enable_fops, +}; + +static int +adb_function_bind(struct usb_configuration *c, struct usb_function *f) +{ + struct usb_composite_dev *cdev = c->cdev; + struct adb_dev *dev = func_to_dev(f); + int id; + int ret; + + dev->cdev = cdev; + DBG(cdev, "adb_function_bind dev: %p\n", dev); + + /* allocate interface ID(s) */ + id = usb_interface_id(c, f); + if (id < 0) + return id; + adb_interface_desc.bInterfaceNumber = id; + + /* allocate endpoints */ + ret = create_bulk_endpoints(dev, &adb_fullspeed_in_desc, + &adb_fullspeed_out_desc); + if (ret) + return ret; + + /* support high speed hardware */ + if (gadget_is_dualspeed(c->cdev->gadget)) { + adb_highspeed_in_desc.bEndpointAddress = + adb_fullspeed_in_desc.bEndpointAddress; + adb_highspeed_out_desc.bEndpointAddress = + adb_fullspeed_out_desc.bEndpointAddress; + } + + DBG(cdev, "%s speed %s: IN/%s, OUT/%s\n", + gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full", + f->name, dev->ep_in->name, dev->ep_out->name); + return 0; +} + +static void +adb_function_unbind(struct usb_configuration *c, struct usb_function *f) +{ + struct adb_dev *dev = func_to_dev(f); + struct usb_request *req; + + spin_lock_irq(&dev->lock); + + adb_request_free(dev->rx_req, dev->ep_out); + while ((req = req_get(dev, &dev->tx_idle))) + adb_request_free(req, dev->ep_in); + + dev->online = 0; + dev->error = 1; + spin_unlock_irq(&dev->lock); + + misc_deregister(&adb_device); + misc_deregister(&adb_enable_device); + kfree(_adb_dev); + _adb_dev = NULL; +} + +static int adb_function_set_alt(struct usb_function *f, + unsigned intf, unsigned alt) +{ + struct adb_dev *dev = func_to_dev(f); + struct usb_composite_dev *cdev = f->config->cdev; + int ret; + + DBG(cdev, "adb_function_set_alt intf: %d alt: %d\n", intf, alt); + ret = usb_ep_enable(dev->ep_in, + ep_choose(cdev->gadget, + &adb_highspeed_in_desc, + &adb_fullspeed_in_desc)); + if (ret) + return ret; + ret = usb_ep_enable(dev->ep_out, + ep_choose(cdev->gadget, + &adb_highspeed_out_desc, + &adb_fullspeed_out_desc)); + if (ret) { + usb_ep_disable(dev->ep_in); + return ret; + } + dev->online = 1; + + /* readers may be blocked waiting for us to go online */ + wake_up(&dev->read_wq); + return 0; +} + +static void adb_function_disable(struct usb_function *f) +{ + struct adb_dev *dev = func_to_dev(f); + struct usb_composite_dev *cdev = dev->cdev; + + DBG(cdev, "adb_function_disable\n"); + dev->online = 0; + dev->error = 1; + usb_ep_disable(dev->ep_in); + usb_ep_disable(dev->ep_out); + + /* readers may be blocked waiting for us to go online */ + wake_up(&dev->read_wq); + + VDBG(cdev, "%s disabled\n", dev->function.name); +} + +static int adb_bind_config(struct usb_configuration *c) +{ + struct adb_dev *dev; + int ret; + + printk(KERN_INFO "adb_bind_config\n"); + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) + return -ENOMEM; + + spin_lock_init(&dev->lock); + + init_waitqueue_head(&dev->read_wq); + init_waitqueue_head(&dev->write_wq); + + atomic_set(&dev->open_excl, 0); + atomic_set(&dev->read_excl, 0); + atomic_set(&dev->write_excl, 0); + + INIT_LIST_HEAD(&dev->tx_idle); + + dev->cdev = c->cdev; + dev->function.name = "adb"; + dev->function.descriptors = fs_adb_descs; + dev->function.hs_descriptors = hs_adb_descs; + dev->function.bind = adb_function_bind; + dev->function.unbind = adb_function_unbind; + dev->function.set_alt = adb_function_set_alt; + dev->function.disable = adb_function_disable; + + /* start disabled */ + dev->function.disabled = 1; + + /* _adb_dev must be set before calling usb_gadget_register_driver */ + _adb_dev = dev; + + ret = misc_register(&adb_device); + if (ret) + goto err1; + ret = misc_register(&adb_enable_device); + if (ret) + goto err2; + + ret = usb_add_function(c, &dev->function); + if (ret) + goto err3; + + return 0; + +err3: + misc_deregister(&adb_enable_device); +err2: + misc_deregister(&adb_device); +err1: + kfree(dev); + printk(KERN_ERR "adb gadget driver failed to initialize\n"); + return ret; +} + +static struct android_usb_function adb_function = { + .name = "adb", + .bind_config = adb_bind_config, +}; + +static int __init init(void) +{ + printk(KERN_INFO "f_adb init\n"); + android_register_function(&adb_function); + return 0; +} +module_init(init); diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c index 32cce029f65c..9e37e0863143 100644 --- a/drivers/usb/gadget/f_mass_storage.c +++ b/drivers/usb/gadget/f_mass_storage.c @@ -295,7 +295,12 @@ #include "gadget_chips.h" +#ifdef CONFIG_USB_ANDROID_MASS_STORAGE +#include <linux/usb/android_composite.h> +#include <linux/platform_device.h> +#define FUNCTION_NAME "usb_mass_storage" +#endif /*------------------------------------------------------------------------*/ @@ -424,6 +429,10 @@ struct fsg_config { u16 release; char can_stall; + +#ifdef CONFIG_USB_ANDROID_MASS_STORAGE + struct platform_device *pdev; +#endif }; @@ -2746,7 +2755,13 @@ static struct fsg_common *fsg_common_init(struct fsg_common *common, curlun->ro = lcfg->cdrom || lcfg->ro; curlun->removable = lcfg->removable; curlun->dev.release = fsg_lun_release; + +#ifdef CONFIG_USB_ANDROID_MASS_STORAGE + /* use "usb_mass_storage" platform device as parent */ + curlun->dev.parent = &cfg->pdev->dev; +#else curlun->dev.parent = &gadget->dev; +#endif /* curlun->dev.driver = &fsg_driver.driver; XXX */ dev_set_drvdata(&curlun->dev, &common->filesem); dev_set_name(&curlun->dev, @@ -3029,7 +3044,11 @@ static int fsg_bind_config(struct usb_composite_dev *cdev, if (unlikely(!fsg)) return -ENOMEM; +#ifdef CONFIG_USB_ANDROID_MASS_STORAGE + fsg->function.name = FUNCTION_NAME; +#else fsg->function.name = FSG_DRIVER_DESC; +#endif fsg->function.strings = fsg_strings_array; fsg->function.bind = fsg_bind; fsg->function.unbind = fsg_unbind; @@ -3153,3 +3172,63 @@ fsg_common_from_params(struct fsg_common *common, return fsg_common_init(common, cdev, &cfg); } +#ifdef CONFIG_USB_ANDROID_MASS_STORAGE + +static struct fsg_config fsg_cfg; + +static int fsg_probe(struct platform_device *pdev) +{ + struct usb_mass_storage_platform_data *pdata = pdev->dev.platform_data; + int i, nluns; + + printk(KERN_INFO "fsg_probe pdev: %p, pdata: %p\n", pdev, pdata); + if (!pdata) + return -1; + + nluns = pdata->nluns; + if (nluns > FSG_MAX_LUNS) + nluns = FSG_MAX_LUNS; + fsg_cfg.nluns = nluns; + for (i = 0; i < nluns; i++) + fsg_cfg.luns[i].removable = 1; + + fsg_cfg.vendor_name = pdata->vendor; + fsg_cfg.product_name = pdata->product; + fsg_cfg.release = pdata->release; + fsg_cfg.can_stall = 0; + fsg_cfg.pdev = pdev; + + return 0; +} + +static struct platform_driver fsg_platform_driver = { + .driver = { .name = FUNCTION_NAME, }, + .probe = fsg_probe, +}; + +int mass_storage_bind_config(struct usb_configuration *c) +{ + struct fsg_common *common = fsg_common_init(NULL, c->cdev, &fsg_cfg); + if (IS_ERR(common)) + return -1; + return fsg_add(c->cdev, c, common); +} + +static struct android_usb_function mass_storage_function = { + .name = FUNCTION_NAME, + .bind_config = mass_storage_bind_config, +}; + +static int __init init(void) +{ + int rc; + printk(KERN_INFO "f_mass_storage init\n"); + rc = platform_driver_register(&fsg_platform_driver); + if (rc != 0) + return rc; + android_register_function(&mass_storage_function); + return 0; +}module_init(init); + +#endif /* CONFIG_USB_ANDROID_MASS_STORAGE */ + diff --git a/drivers/usb/gadget/f_mtp.c b/drivers/usb/gadget/f_mtp.c new file mode 100644 index 000000000000..2c61a2613475 --- /dev/null +++ b/drivers/usb/gadget/f_mtp.c @@ -0,0 +1,1273 @@ +/* + * Gadget Function Driver for MTP + * + * Copyright (C) 2010 Google, Inc. + * Author: Mike Lockwood <lockwood@android.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * 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. + * + */ + +/* #define DEBUG */ +/* #define VERBOSE_DEBUG */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/poll.h> +#include <linux/delay.h> +#include <linux/wait.h> +#include <linux/err.h> +#include <linux/interrupt.h> +#include <linux/kthread.h> +#include <linux/freezer.h> + +#include <linux/types.h> +#include <linux/file.h> +#include <linux/device.h> +#include <linux/miscdevice.h> + +#include <linux/usb.h> +#include <linux/usb_usual.h> +#include <linux/usb/ch9.h> +#include <linux/usb/android_composite.h> +#include <linux/usb/f_mtp.h> + +#define BULK_BUFFER_SIZE 16384 +#define INTR_BUFFER_SIZE 28 + +/* String IDs */ +#define INTERFACE_STRING_INDEX 0 + +/* values for mtp_dev.state */ +#define STATE_OFFLINE 0 /* initial state, disconnected */ +#define STATE_READY 1 /* ready for userspace calls */ +#define STATE_BUSY 2 /* processing userspace calls */ +#define STATE_CANCELED 3 /* transaction canceled by host */ +#define STATE_ERROR 4 /* error from completion routine */ + +/* number of tx and rx requests to allocate */ +#define TX_REQ_MAX 4 +#define RX_REQ_MAX 2 + +/* IO Thread commands */ +#define ANDROID_THREAD_QUIT 1 +#define ANDROID_THREAD_SEND_FILE 2 +#define ANDROID_THREAD_RECEIVE_FILE 3 + +/* ID for Microsoft MTP OS String */ +#define MTP_OS_STRING_ID 0xEE + +/* MTP class reqeusts */ +#define MTP_REQ_CANCEL 0x64 +#define MTP_REQ_GET_EXT_EVENT_DATA 0x65 +#define MTP_REQ_RESET 0x66 +#define MTP_REQ_GET_DEVICE_STATUS 0x67 + +/* constants for device status */ +#define MTP_RESPONSE_OK 0x2001 +#define MTP_RESPONSE_DEVICE_BUSY 0x2019 + +static const char shortname[] = "mtp_usb"; + +struct mtp_dev { + struct usb_function function; + struct usb_composite_dev *cdev; + spinlock_t lock; + + /* appear as MTP or PTP when enumerating */ + int interface_mode; + + struct usb_ep *ep_in; + struct usb_ep *ep_out; + struct usb_ep *ep_intr; + + int state; + + /* synchronize access to our device file */ + atomic_t open_excl; + + struct list_head tx_idle; + + wait_queue_head_t read_wq; + wait_queue_head_t write_wq; + wait_queue_head_t intr_wq; + struct usb_request *rx_req[RX_REQ_MAX]; + struct usb_request *intr_req; + int rx_done; + + /* synchronize access to interrupt endpoint */ + struct mutex intr_mutex; + /* true if interrupt endpoint is busy */ + int intr_busy; + + /* for our file IO thread */ + struct task_struct *thread; + /* current command for IO thread (or zero for none) */ + int thread_command; + struct file *thread_file; + loff_t thread_file_offset; + size_t thread_file_length; + /* used to wait for thread to complete current command */ + struct completion thread_wait; + /* result from current command */ + int thread_result; +}; + +static struct usb_interface_descriptor mtp_interface_desc = { + .bLength = USB_DT_INTERFACE_SIZE, + .bDescriptorType = USB_DT_INTERFACE, + .bInterfaceNumber = 0, + .bNumEndpoints = 3, + .bInterfaceClass = USB_CLASS_VENDOR_SPEC, + .bInterfaceSubClass = USB_SUBCLASS_VENDOR_SPEC, + .bInterfaceProtocol = 0, +}; + +static struct usb_interface_descriptor ptp_interface_desc = { + .bLength = USB_DT_INTERFACE_SIZE, + .bDescriptorType = USB_DT_INTERFACE, + .bInterfaceNumber = 0, + .bNumEndpoints = 3, + .bInterfaceClass = USB_CLASS_STILL_IMAGE, + .bInterfaceSubClass = 1, + .bInterfaceProtocol = 1, +}; + +static struct usb_endpoint_descriptor mtp_highspeed_in_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = __constant_cpu_to_le16(512), +}; + +static struct usb_endpoint_descriptor mtp_highspeed_out_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = __constant_cpu_to_le16(512), +}; + +static struct usb_endpoint_descriptor mtp_fullspeed_in_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_endpoint_descriptor mtp_fullspeed_out_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_endpoint_descriptor mtp_intr_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = __constant_cpu_to_le16(INTR_BUFFER_SIZE), + .bInterval = 6, +}; + +static struct usb_descriptor_header *fs_mtp_descs[] = { + (struct usb_descriptor_header *) &mtp_interface_desc, + (struct usb_descriptor_header *) &mtp_fullspeed_in_desc, + (struct usb_descriptor_header *) &mtp_fullspeed_out_desc, + (struct usb_descriptor_header *) &mtp_intr_desc, + NULL, +}; + +static struct usb_descriptor_header *hs_mtp_descs[] = { + (struct usb_descriptor_header *) &mtp_interface_desc, + (struct usb_descriptor_header *) &mtp_highspeed_in_desc, + (struct usb_descriptor_header *) &mtp_highspeed_out_desc, + (struct usb_descriptor_header *) &mtp_intr_desc, + NULL, +}; + +static struct usb_descriptor_header *fs_ptp_descs[] = { + (struct usb_descriptor_header *) &ptp_interface_desc, + (struct usb_descriptor_header *) &mtp_fullspeed_in_desc, + (struct usb_descriptor_header *) &mtp_fullspeed_out_desc, + (struct usb_descriptor_header *) &mtp_intr_desc, + NULL, +}; + +static struct usb_descriptor_header *hs_ptp_descs[] = { + (struct usb_descriptor_header *) &ptp_interface_desc, + (struct usb_descriptor_header *) &mtp_highspeed_in_desc, + (struct usb_descriptor_header *) &mtp_highspeed_out_desc, + (struct usb_descriptor_header *) &mtp_intr_desc, + NULL, +}; + +static struct usb_string mtp_string_defs[] = { + /* Naming interface "MTP" so libmtp will recognize us */ + [INTERFACE_STRING_INDEX].s = "MTP", + { }, /* end of list */ +}; + +static struct usb_gadget_strings mtp_string_table = { + .language = 0x0409, /* en-US */ + .strings = mtp_string_defs, +}; + +static struct usb_gadget_strings *mtp_strings[] = { + &mtp_string_table, + NULL, +}; + +/* Microsoft MTP OS String */ +static u8 mtp_os_string[] = { + 18, /* sizeof(mtp_os_string) */ + USB_DT_STRING, + /* Signature field: "MSFT100" */ + 'M', 0, 'S', 0, 'F', 0, 'T', 0, '1', 0, '0', 0, '0', 0, + /* vendor code */ + 1, + /* padding */ + 0 +}; + +/* Microsoft Extended Configuration Descriptor Header Section */ +struct mtp_ext_config_desc_header { + __le32 dwLength; + __u16 bcdVersion; + __le16 wIndex; + __u8 bCount; + __u8 reserved[7]; +}; + +/* Microsoft Extended Configuration Descriptor Function Section */ +struct mtp_ext_config_desc_function { + __u8 bFirstInterfaceNumber; + __u8 bInterfaceCount; + __u8 compatibleID[8]; + __u8 subCompatibleID[8]; + __u8 reserved[6]; +}; + +/* MTP Extended Configuration Descriptor */ +struct { + struct mtp_ext_config_desc_header header; + struct mtp_ext_config_desc_function function; +} mtp_ext_config_desc = { + .header = { + .dwLength = __constant_cpu_to_le32(sizeof(mtp_ext_config_desc)), + .bcdVersion = __constant_cpu_to_le16(0x0100), + .wIndex = __constant_cpu_to_le16(4), + .bCount = __constant_cpu_to_le16(1), + }, + .function = { + .bFirstInterfaceNumber = 0, + .bInterfaceCount = 1, + .compatibleID = { 'M', 'T', 'P' }, + }, +}; + +struct mtp_device_status { + __le16 wLength; + __le16 wCode; +}; + +/* temporary variable used between mtp_open() and mtp_gadget_bind() */ +static struct mtp_dev *_mtp_dev; + +static inline struct mtp_dev *func_to_dev(struct usb_function *f) +{ + return container_of(f, struct mtp_dev, function); +} + +static struct usb_request *mtp_request_new(struct usb_ep *ep, int buffer_size) +{ + struct usb_request *req = usb_ep_alloc_request(ep, GFP_KERNEL); + if (!req) + return NULL; + + /* now allocate buffers for the requests */ + req->buf = kmalloc(buffer_size, GFP_KERNEL); + if (!req->buf) { + usb_ep_free_request(ep, req); + return NULL; + } + + return req; +} + +static void mtp_request_free(struct usb_request *req, struct usb_ep *ep) +{ + if (req) { + kfree(req->buf); + usb_ep_free_request(ep, req); + } +} + +static inline int _lock(atomic_t *excl) +{ + if (atomic_inc_return(excl) == 1) { + return 0; + } else { + atomic_dec(excl); + return -1; + } +} + +static inline void _unlock(atomic_t *excl) +{ + atomic_dec(excl); +} + +/* add a request to the tail of a list */ +static void req_put(struct mtp_dev *dev, struct list_head *head, + struct usb_request *req) +{ + unsigned long flags; + + spin_lock_irqsave(&dev->lock, flags); + list_add_tail(&req->list, head); + spin_unlock_irqrestore(&dev->lock, flags); +} + +/* remove a request from the head of a list */ +static struct usb_request *req_get(struct mtp_dev *dev, struct list_head *head) +{ + unsigned long flags; + struct usb_request *req; + + spin_lock_irqsave(&dev->lock, flags); + if (list_empty(head)) { + req = 0; + } else { + req = list_first_entry(head, struct usb_request, list); + list_del(&req->list); + } + spin_unlock_irqrestore(&dev->lock, flags); + return req; +} + +static void mtp_complete_in(struct usb_ep *ep, struct usb_request *req) +{ + struct mtp_dev *dev = _mtp_dev; + + if (req->status != 0) + dev->state = STATE_ERROR; + + req_put(dev, &dev->tx_idle, req); + + wake_up(&dev->write_wq); +} + +static void mtp_complete_out(struct usb_ep *ep, struct usb_request *req) +{ + struct mtp_dev *dev = _mtp_dev; + + dev->rx_done = 1; + if (req->status != 0) + dev->state = STATE_ERROR; + + wake_up(&dev->read_wq); +} + +static void mtp_complete_intr(struct usb_ep *ep, struct usb_request *req) +{ + struct mtp_dev *dev = _mtp_dev; + + DBG(dev->cdev, "mtp_complete_intr status: %d actual: %d\n", req->status, req->actual); + dev->intr_busy = 0; + if (req->status != 0) + dev->state = STATE_ERROR; + + wake_up(&dev->intr_wq); +} + +static int __init create_bulk_endpoints(struct mtp_dev *dev, + struct usb_endpoint_descriptor *in_desc, + struct usb_endpoint_descriptor *out_desc, + struct usb_endpoint_descriptor *intr_desc) +{ + struct usb_composite_dev *cdev = dev->cdev; + struct usb_request *req; + struct usb_ep *ep; + int i; + + DBG(cdev, "create_bulk_endpoints dev: %p\n", dev); + + ep = usb_ep_autoconfig(cdev->gadget, in_desc); + if (!ep) { + DBG(cdev, "usb_ep_autoconfig for ep_in failed\n"); + return -ENODEV; + } + DBG(cdev, "usb_ep_autoconfig for ep_in got %s\n", ep->name); + ep->driver_data = dev; /* claim the endpoint */ + dev->ep_in = ep; + + ep = usb_ep_autoconfig(cdev->gadget, out_desc); + if (!ep) { + DBG(cdev, "usb_ep_autoconfig for ep_out failed\n"); + return -ENODEV; + } + DBG(cdev, "usb_ep_autoconfig for mtp ep_out got %s\n", ep->name); + ep->driver_data = dev; /* claim the endpoint */ + dev->ep_out = ep; + + ep = usb_ep_autoconfig(cdev->gadget, out_desc); + if (!ep) { + DBG(cdev, "usb_ep_autoconfig for ep_out failed\n"); + return -ENODEV; + } + DBG(cdev, "usb_ep_autoconfig for mtp ep_out got %s\n", ep->name); + ep->driver_data = dev; /* claim the endpoint */ + dev->ep_out = ep; + + ep = usb_ep_autoconfig(cdev->gadget, intr_desc); + if (!ep) { + DBG(cdev, "usb_ep_autoconfig for ep_intr failed\n"); + return -ENODEV; + } + DBG(cdev, "usb_ep_autoconfig for mtp ep_intr got %s\n", ep->name); + ep->driver_data = dev; /* claim the endpoint */ + dev->ep_intr = ep; + + /* now allocate requests for our endpoints */ + for (i = 0; i < TX_REQ_MAX; i++) { + req = mtp_request_new(dev->ep_in, BULK_BUFFER_SIZE); + if (!req) + goto fail; + req->complete = mtp_complete_in; + req_put(dev, &dev->tx_idle, req); + } + for (i = 0; i < RX_REQ_MAX; i++) { + req = mtp_request_new(dev->ep_out, BULK_BUFFER_SIZE); + if (!req) + goto fail; + req->complete = mtp_complete_out; + dev->rx_req[i] = req; + } + req = mtp_request_new(dev->ep_intr, INTR_BUFFER_SIZE); + if (!req) + goto fail; + req->complete = mtp_complete_intr; + dev->intr_req = req; + + return 0; + +fail: + printk(KERN_ERR "mtp_bind() could not allocate requests\n"); + return -1; +} + +static ssize_t mtp_read(struct file *fp, char __user *buf, + size_t count, loff_t *pos) +{ + struct mtp_dev *dev = fp->private_data; + struct usb_composite_dev *cdev = dev->cdev; + struct usb_request *req; + int r = count, xfer; + int ret = 0; + + DBG(cdev, "mtp_read(%d)\n", count); + + if (count > BULK_BUFFER_SIZE) + return -EINVAL; + + /* we will block until we're online */ + DBG(cdev, "mtp_read: waiting for online state\n"); + ret = wait_event_interruptible(dev->read_wq, + dev->state != STATE_OFFLINE); + if (ret < 0) { + r = ret; + goto done; + } + spin_lock_irq(&dev->lock); + if (dev->state == STATE_CANCELED) { + /* report cancelation to userspace */ + dev->state = STATE_READY; + spin_unlock_irq(&dev->lock); + return -ECANCELED; + } + dev->state = STATE_BUSY; + spin_unlock_irq(&dev->lock); + +requeue_req: + /* queue a request */ + req = dev->rx_req[0]; + req->length = count; + dev->rx_done = 0; + ret = usb_ep_queue(dev->ep_out, req, GFP_KERNEL); + if (ret < 0) { + r = -EIO; + goto done; + } else { + DBG(cdev, "rx %p queue\n", req); + } + + /* wait for a request to complete */ + ret = wait_event_interruptible(dev->read_wq, dev->rx_done); + if (ret < 0) { + r = ret; + goto done; + } + if (dev->state == STATE_BUSY) { + /* If we got a 0-len packet, throw it back and try again. */ + if (req->actual == 0) + goto requeue_req; + + DBG(cdev, "rx %p %d\n", req, req->actual); + xfer = (req->actual < count) ? req->actual : count; + r = xfer; + if (copy_to_user(buf, req->buf, xfer)) + r = -EFAULT; + } else + r = -EIO; + +done: + spin_lock_irq(&dev->lock); + if (dev->state == STATE_CANCELED) + r = -ECANCELED; + else if (dev->state != STATE_OFFLINE) + dev->state = STATE_READY; + spin_unlock_irq(&dev->lock); + + DBG(cdev, "mtp_read returning %d\n", r); + return r; +} + +static ssize_t mtp_write(struct file *fp, const char __user *buf, + size_t count, loff_t *pos) +{ + struct mtp_dev *dev = fp->private_data; + struct usb_composite_dev *cdev = dev->cdev; + struct usb_request *req = 0; + int r = count, xfer; + int ret; + + DBG(cdev, "mtp_write(%d)\n", count); + + spin_lock_irq(&dev->lock); + if (dev->state == STATE_CANCELED) { + /* report cancelation to userspace */ + dev->state = STATE_READY; + spin_unlock_irq(&dev->lock); + return -ECANCELED; + } + if (dev->state == STATE_OFFLINE) { + spin_unlock_irq(&dev->lock); + return -ENODEV; + } + dev->state = STATE_BUSY; + spin_unlock_irq(&dev->lock); + + while (count > 0) { + if (dev->state != STATE_BUSY) { + DBG(cdev, "mtp_write dev->error\n"); + r = -EIO; + break; + } + + /* get an idle tx request to use */ + req = 0; + ret = wait_event_interruptible(dev->write_wq, + ((req = req_get(dev, &dev->tx_idle)) + || dev->state != STATE_BUSY)); + if (!req) { + r = ret; + break; + } + + if (count > BULK_BUFFER_SIZE) + xfer = BULK_BUFFER_SIZE; + else + xfer = count; + if (copy_from_user(req->buf, buf, xfer)) { + r = -EFAULT; + break; + } + + req->length = xfer; + ret = usb_ep_queue(dev->ep_in, req, GFP_KERNEL); + if (ret < 0) { + DBG(cdev, "mtp_write: xfer error %d\n", ret); + r = -EIO; + break; + } + + buf += xfer; + count -= xfer; + + /* zero this so we don't try to free it on error exit */ + req = 0; + } + + if (req) + req_put(dev, &dev->tx_idle, req); + + spin_lock_irq(&dev->lock); + if (dev->state == STATE_CANCELED) + r = -ECANCELED; + else if (dev->state != STATE_OFFLINE) + dev->state = STATE_READY; + spin_unlock_irq(&dev->lock); + + DBG(cdev, "mtp_write returning %d\n", r); + return r; +} + +static int mtp_send_file(struct mtp_dev *dev, struct file *filp, + loff_t offset, size_t count) +{ + struct usb_composite_dev *cdev = dev->cdev; + struct usb_request *req = 0; + int r = count, xfer, ret; + + DBG(cdev, "mtp_send_file(%lld %d)\n", offset, count); + + while (count > 0) { + /* get an idle tx request to use */ + req = 0; + ret = wait_event_interruptible(dev->write_wq, + (req = req_get(dev, &dev->tx_idle)) + || dev->state != STATE_BUSY); + if (!req) { + r = ret; + break; + } + + if (count > BULK_BUFFER_SIZE) + xfer = BULK_BUFFER_SIZE; + else + xfer = count; + ret = vfs_read(filp, req->buf, xfer, &offset); + if (ret < 0) { + r = ret; + break; + } + xfer = ret; + + req->length = xfer; + ret = usb_ep_queue(dev->ep_in, req, GFP_KERNEL); + if (ret < 0) { + DBG(cdev, "mtp_write: xfer error %d\n", ret); + dev->state = STATE_ERROR; + r = -EIO; + break; + } + + count -= xfer; + + /* zero this so we don't try to free it on error exit */ + req = 0; + } + + if (req) + req_put(dev, &dev->tx_idle, req); + + DBG(cdev, "mtp_write returning %d\n", r); + return r; +} + +static int mtp_receive_file(struct mtp_dev *dev, struct file *filp, + loff_t offset, size_t count) +{ + struct usb_composite_dev *cdev = dev->cdev; + struct usb_request *read_req = NULL, *write_req = NULL; + int r = count; + int ret; + int cur_buf = 0; + + DBG(cdev, "mtp_receive_file(%d)\n", count); + + while (count > 0 || write_req) { + if (count > 0) { + /* queue a request */ + read_req = dev->rx_req[cur_buf]; + cur_buf = (cur_buf + 1) % RX_REQ_MAX; + + read_req->length = (count > BULK_BUFFER_SIZE + ? BULK_BUFFER_SIZE : count); + dev->rx_done = 0; + ret = usb_ep_queue(dev->ep_out, read_req, GFP_KERNEL); + if (ret < 0) { + r = -EIO; + dev->state = STATE_ERROR; + break; + } + count -= ret; + } + + if (write_req) { + DBG(cdev, "rx %p %d\n", write_req, write_req->actual); + ret = vfs_write(filp, write_req->buf, write_req->actual, + &offset); + DBG(cdev, "vfs_write %d\n", ret); + if (ret != write_req->actual) { + r = -EIO; + dev->state = STATE_ERROR; + break; + } + write_req = NULL; + } + + if (read_req) { + /* wait for our last read to complete */ + ret = wait_event_interruptible(dev->read_wq, + dev->rx_done || dev->state != STATE_BUSY); + if (ret < 0 || dev->state != STATE_BUSY) { + r = ret; + break; + } + count -= read_req->actual; + write_req = read_req; + read_req = NULL; + } + } + + DBG(cdev, "mtp_read returning %d\n", r); + return r; +} + +/* Kernel thread for handling file IO operations */ +static int mtp_thread(void *data) +{ + struct mtp_dev *dev = (struct mtp_dev *)data; + struct usb_composite_dev *cdev = dev->cdev; + int flags; + + DBG(cdev, "mtp_thread started\n"); + + while (1) { + /* wait for a command */ + while (1) { + try_to_freeze(); + set_current_state(TASK_INTERRUPTIBLE); + if (dev->thread_command != 0) + break; + schedule(); + } + __set_current_state(TASK_RUNNING); + + if (dev->thread_command == ANDROID_THREAD_QUIT) { + DBG(cdev, "ANDROID_THREAD_QUIT\n"); + dev->thread_result = 0; + goto done; + } + + if (dev->thread_command == ANDROID_THREAD_SEND_FILE) + flags = O_RDONLY | O_LARGEFILE; + else + flags = O_WRONLY | O_LARGEFILE | O_CREAT; + + if (dev->thread_command == ANDROID_THREAD_SEND_FILE) { + dev->thread_result = mtp_send_file(dev, + dev->thread_file, + dev->thread_file_offset, + dev->thread_file_length); + } else { + dev->thread_result = mtp_receive_file(dev, + dev->thread_file, + dev->thread_file_offset, + dev->thread_file_length); + } + + if (dev->thread_file) { + fput(dev->thread_file); + dev->thread_file = NULL; + } + dev->thread_command = 0; + complete(&dev->thread_wait); + } + +done: + DBG(cdev, "android_thread done\n"); + complete_and_exit(&dev->thread_wait, 0); +} + +static int mtp_send_event(struct mtp_dev *dev, struct mtp_event *event) +{ + struct usb_request *req; + int ret; + int length = event->length; + + DBG(dev->cdev, "mtp_send_event(%d)\n", event->length); + + if (length < 0 || length > INTR_BUFFER_SIZE) + return -EINVAL; + + mutex_lock(&dev->intr_mutex); + + /* wait for a request to complete */ + ret = wait_event_interruptible(dev->intr_wq, !dev->intr_busy || dev->state == STATE_OFFLINE); + if (ret < 0) + goto done; + if (dev->state == STATE_OFFLINE) { + ret = -ENODEV; + goto done; + } + req = dev->intr_req; + if (copy_from_user(req->buf, (void __user *)event->data, length)) { + ret = -EFAULT; + goto done; + } + req->length = length; + dev->intr_busy = 1; + ret = usb_ep_queue(dev->ep_intr, req, GFP_KERNEL); + if (ret) + dev->intr_busy = 0; + +done: + mutex_unlock(&dev->intr_mutex); + return ret; +} + +static long mtp_ioctl(struct file *fp, unsigned code, unsigned long value) +{ + struct mtp_dev *dev = fp->private_data; + struct file *filp = NULL; + int ret = -EINVAL; + + switch (code) { + case MTP_SEND_FILE: + case MTP_RECEIVE_FILE: + { + struct mtp_file_range mfr; + + spin_lock_irq(&dev->lock); + if (dev->state == STATE_CANCELED) { + /* report cancelation to userspace */ + dev->state = STATE_READY; + spin_unlock_irq(&dev->lock); + return -ECANCELED; + } + if (dev->state == STATE_OFFLINE) { + spin_unlock_irq(&dev->lock); + return -ENODEV; + } + dev->state = STATE_BUSY; + spin_unlock_irq(&dev->lock); + + if (copy_from_user(&mfr, (void __user *)value, sizeof(mfr))) { + ret = -EFAULT; + goto fail; + } + filp = fget(mfr.fd); + if (!filp) { + ret = -EBADF; + goto fail; + } + + dev->thread_file = filp; + dev->thread_file_offset = mfr.offset; + dev->thread_file_length = mfr.length; + + if (code == MTP_SEND_FILE) + dev->thread_command = ANDROID_THREAD_SEND_FILE; + else + dev->thread_command = ANDROID_THREAD_RECEIVE_FILE; + + /* wake up the thread */ + init_completion(&dev->thread_wait); + wake_up_process(dev->thread); + + /* wait for the thread to complete the command */ + wait_for_completion(&dev->thread_wait); + ret = dev->thread_result; + DBG(dev->cdev, "thread returned %d\n", ret); + break; + } + case MTP_SET_INTERFACE_MODE: + if (value == MTP_INTERFACE_MODE_MTP || + value == MTP_INTERFACE_MODE_PTP) { + dev->interface_mode = value; + if (value == MTP_INTERFACE_MODE_PTP) { + dev->function.descriptors = fs_ptp_descs; + dev->function.hs_descriptors = hs_ptp_descs; + } else { + dev->function.descriptors = fs_mtp_descs; + dev->function.hs_descriptors = hs_mtp_descs; + } + ret = 0; + } + break; + case MTP_SEND_EVENT: + { + struct mtp_event event; + /* return here so we don't change dev->state below, + * which would interfere with bulk transfer state. + */ + if (copy_from_user(&event, (void __user *)value, sizeof(event))) + return -EFAULT; + else + return mtp_send_event(dev, &event); + } + } + +fail: + if (filp) + fput(filp); + spin_lock_irq(&dev->lock); + if (dev->state == STATE_CANCELED) + ret = -ECANCELED; + else if (dev->state != STATE_OFFLINE) + dev->state = STATE_READY; + spin_unlock_irq(&dev->lock); + DBG(dev->cdev, "ioctl returning %d\n", ret); + return ret; +} + +static int mtp_open(struct inode *ip, struct file *fp) +{ + printk(KERN_INFO "mtp_open\n"); + if (_lock(&_mtp_dev->open_excl)) + return -EBUSY; + + _mtp_dev->thread = kthread_create(mtp_thread, _mtp_dev, "f_mtp"); + if (IS_ERR(_mtp_dev->thread)) + return -ENOMEM; + + /* clear any error condition */ + if (_mtp_dev->state != STATE_OFFLINE) + _mtp_dev->state = STATE_READY; + + fp->private_data = _mtp_dev; + return 0; +} + +static int mtp_release(struct inode *ip, struct file *fp) +{ + printk(KERN_INFO "mtp_release\n"); + + /* tell the thread to quit */ + if (_mtp_dev->thread) { + _mtp_dev->thread_command = ANDROID_THREAD_QUIT; + init_completion(&_mtp_dev->thread_wait); + wake_up_process(_mtp_dev->thread); + wait_for_completion(&_mtp_dev->thread_wait); + } + + _unlock(&_mtp_dev->open_excl); + return 0; +} + +/* file operations for /dev/mtp_usb */ +static const struct file_operations mtp_fops = { + .owner = THIS_MODULE, + .read = mtp_read, + .write = mtp_write, + .unlocked_ioctl = mtp_ioctl, + .open = mtp_open, + .release = mtp_release, +}; + +static struct miscdevice mtp_device = { + .minor = MISC_DYNAMIC_MINOR, + .name = shortname, + .fops = &mtp_fops, +}; + +static int +mtp_function_bind(struct usb_configuration *c, struct usb_function *f) +{ + struct usb_composite_dev *cdev = c->cdev; + struct mtp_dev *dev = func_to_dev(f); + int id; + int ret; + + dev->cdev = cdev; + DBG(cdev, "mtp_function_bind dev: %p\n", dev); + + /* allocate interface ID(s) */ + id = usb_interface_id(c, f); + if (id < 0) + return id; + mtp_interface_desc.bInterfaceNumber = id; + + /* allocate endpoints */ + ret = create_bulk_endpoints(dev, &mtp_fullspeed_in_desc, + &mtp_fullspeed_out_desc, &mtp_intr_desc); + if (ret) + return ret; + + /* support high speed hardware */ + if (gadget_is_dualspeed(c->cdev->gadget)) { + mtp_highspeed_in_desc.bEndpointAddress = + mtp_fullspeed_in_desc.bEndpointAddress; + mtp_highspeed_out_desc.bEndpointAddress = + mtp_fullspeed_out_desc.bEndpointAddress; + } + + DBG(cdev, "%s speed %s: IN/%s, OUT/%s\n", + gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full", + f->name, dev->ep_in->name, dev->ep_out->name); + return 0; +} + +static void +mtp_function_unbind(struct usb_configuration *c, struct usb_function *f) +{ + struct mtp_dev *dev = func_to_dev(f); + struct usb_request *req; + int i; + + spin_lock_irq(&dev->lock); + while ((req = req_get(dev, &dev->tx_idle))) + mtp_request_free(req, dev->ep_in); + for (i = 0; i < RX_REQ_MAX; i++) + mtp_request_free(dev->rx_req[i], dev->ep_out); + mtp_request_free(dev->intr_req, dev->ep_intr); + dev->state = STATE_OFFLINE; + spin_unlock_irq(&dev->lock); + wake_up(&dev->intr_wq); + + misc_deregister(&mtp_device); + kfree(_mtp_dev); + _mtp_dev = NULL; +} + +static int mtp_function_setup(struct usb_function *f, + const struct usb_ctrlrequest *ctrl) +{ + struct mtp_dev *dev = func_to_dev(f); + struct usb_composite_dev *cdev = dev->cdev; + int value = -EOPNOTSUPP; + u16 w_index = le16_to_cpu(ctrl->wIndex); + u16 w_value = le16_to_cpu(ctrl->wValue); + u16 w_length = le16_to_cpu(ctrl->wLength); + unsigned long flags; + + /* do nothing if we are disabled */ + if (dev->function.disabled) + return value; + + VDBG(cdev, "mtp_function_setup " + "%02x.%02x v%04x i%04x l%u\n", + ctrl->bRequestType, ctrl->bRequest, + w_value, w_index, w_length); + + /* Handle MTP OS string */ + if (dev->interface_mode == MTP_INTERFACE_MODE_MTP + && ctrl->bRequestType == + (USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_DEVICE) + && ctrl->bRequest == USB_REQ_GET_DESCRIPTOR + && (w_value >> 8) == USB_DT_STRING + && (w_value & 0xFF) == MTP_OS_STRING_ID) { + value = (w_length < sizeof(mtp_os_string) + ? w_length : sizeof(mtp_os_string)); + memcpy(cdev->req->buf, mtp_os_string, value); + /* return here since composite.c will send for us */ + return value; + } + if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_VENDOR) { + /* Handle MTP OS descriptor */ + DBG(cdev, "vendor request: %d index: %d value: %d length: %d\n", + ctrl->bRequest, w_index, w_value, w_length); + + if (dev->interface_mode == MTP_INTERFACE_MODE_MTP + && ctrl->bRequest == 1 + && (ctrl->bRequestType & USB_DIR_IN) + && (w_index == 4 || w_index == 5)) { + value = (w_length < sizeof(mtp_ext_config_desc) ? + w_length : sizeof(mtp_ext_config_desc)); + memcpy(cdev->req->buf, &mtp_ext_config_desc, value); + } + } + if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_CLASS) { + DBG(cdev, "class request: %d index: %d value: %d length: %d\n", + ctrl->bRequest, w_index, w_value, w_length); + + if (ctrl->bRequest == MTP_REQ_CANCEL && w_index == 0 + && w_value == 0) { + DBG(cdev, "MTP_REQ_CANCEL\n"); + + spin_lock_irqsave(&dev->lock, flags); + if (dev->state == STATE_BUSY) { + dev->state = STATE_CANCELED; + wake_up(&dev->read_wq); + wake_up(&dev->write_wq); + } + spin_unlock_irqrestore(&dev->lock, flags); + + /* We need to queue a request to read the remaining + * bytes, but we don't actually need to look at + * the contents. + */ + value = w_length; + } else if (ctrl->bRequest == MTP_REQ_GET_DEVICE_STATUS + && w_index == 0 && w_value == 0) { + struct mtp_device_status *status = cdev->req->buf; + status->wLength = + __constant_cpu_to_le16(sizeof(*status)); + + DBG(cdev, "MTP_REQ_GET_DEVICE_STATUS\n"); + spin_lock_irqsave(&dev->lock, flags); + /* device status is "busy" until we report + * the cancelation to userspace + */ + if (dev->state == STATE_BUSY + || dev->state == STATE_CANCELED) + status->wCode = + __cpu_to_le16(MTP_RESPONSE_DEVICE_BUSY); + else + status->wCode = + __cpu_to_le16(MTP_RESPONSE_OK); + spin_unlock_irqrestore(&dev->lock, flags); + value = sizeof(*status); + } + } + + /* respond with data transfer or status phase? */ + if (value >= 0) { + int rc; + cdev->req->zero = value < w_length; + cdev->req->length = value; + rc = usb_ep_queue(cdev->gadget->ep0, cdev->req, GFP_ATOMIC); + if (rc < 0) + ERROR(cdev, "%s setup response queue error\n", __func__); + } + + if (value == -EOPNOTSUPP) + VDBG(cdev, + "unknown class-specific control req " + "%02x.%02x v%04x i%04x l%u\n", + ctrl->bRequestType, ctrl->bRequest, + w_value, w_index, w_length); + return value; +} + +static int mtp_function_set_alt(struct usb_function *f, + unsigned intf, unsigned alt) +{ + struct mtp_dev *dev = func_to_dev(f); + struct usb_composite_dev *cdev = f->config->cdev; + int ret; + + DBG(cdev, "mtp_function_set_alt intf: %d alt: %d\n", intf, alt); + ret = usb_ep_enable(dev->ep_in, + ep_choose(cdev->gadget, + &mtp_highspeed_in_desc, + &mtp_fullspeed_in_desc)); + if (ret) + return ret; + ret = usb_ep_enable(dev->ep_out, + ep_choose(cdev->gadget, + &mtp_highspeed_out_desc, + &mtp_fullspeed_out_desc)); + if (ret) { + usb_ep_disable(dev->ep_in); + return ret; + } + ret = usb_ep_enable(dev->ep_intr, &mtp_intr_desc); + if (ret) { + usb_ep_disable(dev->ep_out); + usb_ep_disable(dev->ep_in); + return ret; + } + dev->state = STATE_READY; + + /* readers may be blocked waiting for us to go online */ + wake_up(&dev->read_wq); + return 0; +} + +static void mtp_function_disable(struct usb_function *f) +{ + struct mtp_dev *dev = func_to_dev(f); + struct usb_composite_dev *cdev = dev->cdev; + + DBG(cdev, "mtp_function_disable\n"); + dev->state = STATE_OFFLINE; + usb_ep_disable(dev->ep_in); + usb_ep_disable(dev->ep_out); + usb_ep_disable(dev->ep_intr); + + /* readers may be blocked waiting for us to go online */ + wake_up(&dev->read_wq); + wake_up(&dev->intr_wq); + + VDBG(cdev, "%s disabled\n", dev->function.name); +} + +static int mtp_bind_config(struct usb_configuration *c) +{ + struct mtp_dev *dev; + int ret; + + printk(KERN_INFO "mtp_bind_config\n"); + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) + return -ENOMEM; + + /* allocate a string ID for our interface */ + if (mtp_string_defs[INTERFACE_STRING_INDEX].id == 0) { + ret = usb_string_id(c->cdev); + if (ret < 0) + return ret; + mtp_string_defs[INTERFACE_STRING_INDEX].id = ret; + mtp_interface_desc.iInterface = ret; + } + + spin_lock_init(&dev->lock); + init_completion(&dev->thread_wait); + init_waitqueue_head(&dev->read_wq); + init_waitqueue_head(&dev->write_wq); + init_waitqueue_head(&dev->intr_wq); + atomic_set(&dev->open_excl, 0); + INIT_LIST_HEAD(&dev->tx_idle); + mutex_init(&dev->intr_mutex); + + dev->cdev = c->cdev; + dev->function.name = "mtp"; + dev->function.strings = mtp_strings, + dev->function.descriptors = fs_mtp_descs; + dev->function.hs_descriptors = hs_mtp_descs; + dev->function.bind = mtp_function_bind; + dev->function.unbind = mtp_function_unbind; + dev->function.setup = mtp_function_setup; + dev->function.set_alt = mtp_function_set_alt; + dev->function.disable = mtp_function_disable; + + /* MTP mode by default */ + dev->interface_mode = MTP_INTERFACE_MODE_MTP; + + /* _mtp_dev must be set before calling usb_gadget_register_driver */ + _mtp_dev = dev; + + ret = misc_register(&mtp_device); + if (ret) + goto err1; + + ret = usb_add_function(c, &dev->function); + if (ret) + goto err2; + + return 0; + +err2: + misc_deregister(&mtp_device); +err1: + kfree(dev); + printk(KERN_ERR "mtp gadget driver failed to initialize\n"); + return ret; +} + +static struct android_usb_function mtp_function = { + .name = "mtp", + .bind_config = mtp_bind_config, +}; + +static int __init init(void) +{ + printk(KERN_INFO "f_mtp init\n"); + android_register_function(&mtp_function); + return 0; +} +module_init(init); diff --git a/drivers/usb/gadget/f_rndis.c b/drivers/usb/gadget/f_rndis.c index 882484a40398..2d9d97ecce2b 100644 --- a/drivers/usb/gadget/f_rndis.c +++ b/drivers/usb/gadget/f_rndis.c @@ -26,8 +26,9 @@ #include <linux/slab.h> #include <linux/kernel.h> -#include <linux/device.h> +#include <linux/platform_device.h> #include <linux/etherdevice.h> +#include <linux/usb/android_composite.h> #include <asm/atomic.h> @@ -129,9 +130,16 @@ static struct usb_interface_descriptor rndis_control_intf = { /* .bInterfaceNumber = DYNAMIC */ /* status endpoint is optional; this could be patched later */ .bNumEndpoints = 1, +#ifdef CONFIG_USB_ANDROID_RNDIS_WCEIS + /* "Wireless" RNDIS; auto-detected by Windows */ + .bInterfaceClass = USB_CLASS_WIRELESS_CONTROLLER, + .bInterfaceSubClass = 1, + .bInterfaceProtocol = 3, +#else .bInterfaceClass = USB_CLASS_COMM, .bInterfaceSubClass = USB_CDC_SUBCLASS_ACM, .bInterfaceProtocol = USB_CDC_ACM_PROTO_VENDOR, +#endif /* .iInterface = DYNAMIC */ }; @@ -304,6 +312,10 @@ static struct usb_gadget_strings *rndis_strings[] = { NULL, }; +#ifdef CONFIG_USB_ANDROID_RNDIS +static struct usb_ether_platform_data *rndis_pdata; +#endif + /*-------------------------------------------------------------------------*/ static struct sk_buff *rndis_add_header(struct gether *port, @@ -487,10 +499,10 @@ static int rndis_set_alt(struct usb_function *f, unsigned intf, unsigned alt) usb_ep_disable(rndis->notify); } else { VDBG(cdev, "init rndis ctrl %d\n", intf); - rndis->notify_desc = ep_choose(cdev->gadget, - rndis->hs.notify, - rndis->fs.notify); } + rndis->notify_desc = ep_choose(cdev->gadget, + rndis->hs.notify, + rndis->fs.notify); usb_ep_enable(rndis->notify, rndis->notify_desc); rndis->notify->driver_data = rndis; @@ -504,11 +516,11 @@ static int rndis_set_alt(struct usb_function *f, unsigned intf, unsigned alt) if (!rndis->port.in) { DBG(cdev, "init rndis\n"); - rndis->port.in = ep_choose(cdev->gadget, - rndis->hs.in, rndis->fs.in); - rndis->port.out = ep_choose(cdev->gadget, - rndis->hs.out, rndis->fs.out); } + rndis->port.in = ep_choose(cdev->gadget, + rndis->hs.in, rndis->fs.in); + rndis->port.out = ep_choose(cdev->gadget, + rndis->hs.out, rndis->fs.out); /* Avoid ZLPs; they can be troublesome. */ rndis->port.is_zlp_ok = false; @@ -707,11 +719,12 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f) rndis_set_param_medium(rndis->config, NDIS_MEDIUM_802_3, 0); rndis_set_host_mac(rndis->config, rndis->ethaddr); -#if 0 -// FIXME - if (rndis_set_param_vendor(rndis->config, vendorID, - manufacturer)) - goto fail0; +#ifdef CONFIG_USB_ANDROID_RNDIS + if (rndis_pdata) { + if (rndis_set_param_vendor(rndis->config, rndis_pdata->vendorID, + rndis_pdata->vendorDescr)) + goto fail; + } #endif /* NOTE: all that is done without knowing or caring about @@ -850,6 +863,11 @@ rndis_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]) rndis->port.func.setup = rndis_setup; rndis->port.func.disable = rndis_disable; +#ifdef CONFIG_USB_ANDROID_RNDIS + /* start disabled */ + rndis->port.func.disabled = 1; +#endif + status = usb_add_function(c, &rndis->port.func); if (status) { kfree(rndis); @@ -858,3 +876,54 @@ fail: } return status; } + +#ifdef CONFIG_USB_ANDROID_RNDIS +#include "rndis.c" + +static int rndis_probe(struct platform_device *pdev) +{ + rndis_pdata = pdev->dev.platform_data; + return 0; +} + +static struct platform_driver rndis_platform_driver = { + .driver = { .name = "rndis", }, + .probe = rndis_probe, +}; + +int rndis_function_bind_config(struct usb_configuration *c) +{ + int ret; + + if (!rndis_pdata) { + printk(KERN_ERR "rndis_pdata null in rndis_function_bind_config\n"); + return -1; + } + + printk(KERN_INFO + "rndis_function_bind_config MAC: %02X:%02X:%02X:%02X:%02X:%02X\n", + rndis_pdata->ethaddr[0], rndis_pdata->ethaddr[1], + rndis_pdata->ethaddr[2], rndis_pdata->ethaddr[3], + rndis_pdata->ethaddr[4], rndis_pdata->ethaddr[5]); + + ret = gether_setup(c->cdev->gadget, rndis_pdata->ethaddr); + if (ret == 0) + ret = rndis_bind_config(c, rndis_pdata->ethaddr); + return ret; +} + +static struct android_usb_function rndis_function = { + .name = "rndis", + .bind_config = rndis_function_bind_config, +}; + +static int __init init(void) +{ + printk(KERN_INFO "f_rndis init\n"); + platform_driver_register(&rndis_platform_driver); + android_register_function(&rndis_function); + return 0; +} +module_init(init); + +#endif /* CONFIG_USB_ANDROID_RNDIS */ diff --git a/drivers/usb/gadget/storage_common.c b/drivers/usb/gadget/storage_common.c index 484acfb1a7c5..2771166ac69a 100644 --- a/drivers/usb/gadget/storage_common.c +++ b/drivers/usb/gadget/storage_common.c @@ -805,10 +805,16 @@ static ssize_t fsg_store_file(struct device *dev, struct device_attribute *attr, struct rw_semaphore *filesem = dev_get_drvdata(dev); int rc = 0; + +#ifndef CONFIG_USB_ANDROID_MASS_STORAGE + /* disabled in android because we need to allow closing the backing file + * if the media was removed + */ if (curlun->prevent_medium_removal && fsg_lun_is_open(curlun)) { LDBG(curlun, "eject attempt prevented\n"); return -EBUSY; /* "Door is locked" */ } +#endif /* Remove a trailing newline */ if (count > 0 && buf[count-1] == '\n') diff --git a/drivers/usb/gadget/u_ether.c b/drivers/usb/gadget/u_ether.c index 6bb876d65252..efdc8817f77d 100644 --- a/drivers/usb/gadget/u_ether.c +++ b/drivers/usb/gadget/u_ether.c @@ -936,7 +936,6 @@ void gether_disconnect(struct gether *link) struct eth_dev *dev = link->ioport; struct usb_request *req; - WARN_ON(!dev); if (!dev) return; diff --git a/drivers/usb/gadget/u_ether.h b/drivers/usb/gadget/u_ether.h index 3c8c0c9f9d72..99e4aa3b1374 100644 --- a/drivers/usb/gadget/u_ether.h +++ b/drivers/usb/gadget/u_ether.h @@ -105,7 +105,7 @@ int geth_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]); int ecm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]); int eem_bind_config(struct usb_configuration *c); -#ifdef USB_ETH_RNDIS +#if defined(USB_ETH_RNDIS) || defined(CONFIG_USB_ANDROID_RNDIS) int rndis_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]); |