/* * multi.c -- Multifunction Composite driver * * Copyright (C) 2008 David Brownell * Copyright (C) 2008 Nokia Corporation * Copyright (C) 2009 Samsung Electronics * Author: Michal Nazarewicz (m.nazarewicz@samsung.com) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include #include #if defined USB_ETH_RNDIS # undef USB_ETH_RNDIS #endif #ifdef CONFIG_USB_ETH_RNDIS # define USB_ETH_RNDIS y #endif #define DRIVER_DESC "Multifunction Composite Gadget" #define DRIVER_VERSION "2009/07/21" /*-------------------------------------------------------------------------*/ #define MULTI_VENDOR_NUM 0x0525 /* XXX NetChip */ #define MULTI_PRODUCT_NUM 0xa4ab /* XXX */ /*-------------------------------------------------------------------------*/ /* * 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 "composite.c" #include "usbstring.c" #include "config.c" #include "epautoconf.c" #include "u_serial.c" #include "f_acm.c" #include "f_ecm.c" #include "f_subset.c" #ifdef USB_ETH_RNDIS # include "f_rndis.c" # include "rndis.c" #endif #include "u_ether.c" #undef DBG /* u_ether.c has broken idea about macros */ #undef VDBG /* so clean up after it */ #undef ERROR #undef INFO #include "f_mass_storage.c" /*-------------------------------------------------------------------------*/ static struct usb_device_descriptor device_desc = { .bLength = sizeof device_desc, .bDescriptorType = USB_DT_DEVICE, .bcdUSB = cpu_to_le16(0x0200), /* .bDeviceClass = USB_CLASS_COMM, */ /* .bDeviceSubClass = 0, */ /* .bDeviceProtocol = 0, */ .bDeviceClass = 0xEF, .bDeviceSubClass = 2, .bDeviceProtocol = 1, /* .bMaxPacketSize0 = f(hardware) */ /* Vendor and product id can be overridden by module parameters. */ .idVendor = cpu_to_le16(MULTI_VENDOR_NUM), .idProduct = cpu_to_le16(MULTI_PRODUCT_NUM), /* .bcdDevice = f(hardware) */ /* .iManufacturer = DYNAMIC */ /* .iProduct = DYNAMIC */ /* NO SERIAL NUMBER */ .bNumConfigurations = 1, }; static struct usb_otg_descriptor otg_descriptor = { .bLength = sizeof otg_descriptor, .bDescriptorType = USB_DT_OTG, /* REVISIT SRP-only hardware is possible, although * it would not be called "OTG" ... */ .bmAttributes = USB_OTG_SRP | USB_OTG_HNP, }; static const struct usb_descriptor_header *otg_desc[] = { (struct usb_descriptor_header *) &otg_descriptor, NULL, }; /* string IDs are assigned dynamically */ #define STRING_MANUFACTURER_IDX 0 #define STRING_PRODUCT_IDX 1 static char manufacturer[50]; static struct usb_string strings_dev[] = { [STRING_MANUFACTURER_IDX].s = manufacturer, [STRING_PRODUCT_IDX].s = DRIVER_DESC, { } /* 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 u8 hostaddr[ETH_ALEN]; /****************************** Configurations ******************************/ static struct fsg_module_parameters mod_data = { .stall = 1 }; FSG_MODULE_PARAMETERS(/* no prefix */, mod_data); static struct fsg_common *fsg_common; #ifdef USB_ETH_RNDIS static int __init rndis_do_config(struct usb_configuration *c) { int ret; if (gadget_is_otg(c->cdev->gadget)) { c->descriptors = otg_desc; c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; } ret = rndis_bind_config(c, hostaddr); if (ret < 0) return ret; ret = acm_bind_config(c, 0); if (ret < 0) return ret; ret = fsg_add(c->cdev, c, fsg_common); if (ret < 0) return ret; return 0; } static struct usb_configuration rndis_config_driver = { .label = "Multifunction Composite (RNDIS + MS + ACM)", .bind = rndis_do_config, .bConfigurationValue = 2, /* .iConfiguration = DYNAMIC */ .bmAttributes = USB_CONFIG_ATT_SELFPOWER, }; #endif #ifdef CONFIG_USB_G_MULTI_CDC static int __init cdc_do_config(struct usb_configuration *c) { int ret; if (gadget_is_otg(c->cdev->gadget)) { c->descriptors = otg_desc; c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; } ret = ecm_bind_config(c, hostaddr); if (ret < 0) return ret; ret = acm_bind_config(c, 0); if (ret < 0) return ret; ret = fsg_add(c->cdev, c, fsg_common); if (ret < 0) return ret; if (ret < 0) return ret; return 0; } static struct usb_configuration cdc_config_driver = { .label = "Multifunction Composite (CDC + MS + ACM)", .bind = cdc_do_config, .bConfigurationValue = 1, /* .iConfiguration = DYNAMIC */ .bmAttributes = USB_CONFIG_ATT_SELFPOWER, }; #endif /****************************** Gadget Bind ******************************/ static int __init multi_bind(struct usb_composite_dev *cdev) { struct usb_gadget *gadget = cdev->gadget; int status, gcnum; if (!can_support_ecm(cdev->gadget)) { dev_err(&gadget->dev, "controller '%s' not usable\n", gadget->name); return -EINVAL; } /* set up network link layer */ status = gether_setup(cdev->gadget, hostaddr); if (status < 0) return status; /* set up serial link layer */ status = gserial_setup(cdev->gadget, 1); if (status < 0) goto fail0; /* set up mass storage function */ fsg_common = fsg_common_from_params(0, cdev, &mod_data); if (IS_ERR(fsg_common)) { status = PTR_ERR(fsg_common); goto fail1; } gcnum = usb_gadget_controller_number(gadget); if (gcnum >= 0) device_desc.bcdDevice = cpu_to_le16(0x0300 | gcnum); else { /* We assume that can_support_ecm() tells the truth; * but if the controller isn't recognized at all then * that assumption is a bit more likely to be wrong. */ WARNING(cdev, "controller '%s' not recognized\n", gadget->name); device_desc.bcdDevice = cpu_to_le16(0x0300 | 0x0099); } /* Allocate string descriptor numbers ... note that string * contents can be overridden by the composite_dev glue. */ /* device descriptor strings: manufacturer, product */ snprintf(manufacturer, sizeof manufacturer, "%s %s with %s", init_utsname()->sysname, init_utsname()->release, gadget->name); status = usb_string_id(cdev); if (status < 0) goto fail2; strings_dev[STRING_MANUFACTURER_IDX].id = status; device_desc.iManufacturer = status; status = usb_string_id(cdev); if (status < 0) goto fail2; strings_dev[STRING_PRODUCT_IDX].id = status; device_desc.iProduct = status; #ifdef USB_ETH_RNDIS /* register our first configuration */ status = usb_add_config(cdev, &rndis_config_driver); if (status < 0) goto fail2; #endif #ifdef CONFIG_USB_G_MULTI_CDC /* register our second configuration */ status = usb_add_config(cdev, &cdc_config_driver); if (status < 0) goto fail2; #endif dev_info(&gadget->dev, DRIVER_DESC ", version: " DRIVER_VERSION "\n"); fsg_common_put(fsg_common); return 0; fail2: fsg_common_put(fsg_common); fail1: gserial_cleanup(); fail0: gether_cleanup(); return status; } static int __exit multi_unbind(struct usb_composite_dev *cdev) { gserial_cleanup(); gether_cleanup(); return 0; } /****************************** Some noise ******************************/ static struct usb_composite_driver multi_driver = { .name = "g_multi", .dev = &device_desc, .strings = dev_strings, .bind = multi_bind, .unbind = __exit_p(multi_unbind), }; MODULE_DESCRIPTION(DRIVER_DESC); MODULE_AUTHOR("Michal Nazarewicz"); MODULE_LICENSE("GPL"); static int __init g_multi_init(void) { return usb_composite_register(&multi_driver); } module_init(g_multi_init); static void __exit g_multi_cleanup(void) { usb_composite_unregister(&multi_driver); } module_exit(g_multi_cleanup);