2 * multi.c -- Multifunction Composite driver
4 * Copyright (C) 2008 David Brownell
5 * Copyright (C) 2008 Nokia Corporation
6 * Copyright (C) 2009 Samsung Electronics
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
16 #include <linux/kernel.h>
17 #include <linux/utsname.h>
18 #include <linux/module.h>
21 #if defined USB_ETH_RNDIS
24 #ifdef CONFIG_USB_G_MULTI_RNDIS
25 # define USB_ETH_RNDIS y
29 #define DRIVER_DESC "Multifunction Composite Gadget"
31 MODULE_DESCRIPTION(DRIVER_DESC);
32 MODULE_AUTHOR("Michal Nazarewicz");
33 MODULE_LICENSE("GPL");
36 /***************************** All the files... *****************************/
39 * kbuild is not very cooperative with respect to linking separately
40 * compiled library objects into one module. So for now we won't use
41 * separate compilation ... ensuring init/exit sections work to shrink
42 * the runtime footprint, and giving us at least some parts of what
43 * a "gcc --combine ... part1.c part2.c part3.c ... " build would.
46 #include "composite.c"
47 #include "usbstring.c"
49 #include "epautoconf.c"
51 #include "f_mass_storage.c"
66 /***************************** Device Descriptor ****************************/
68 #define MULTI_VENDOR_NUM 0x1d6b /* Linux Foundation */
69 #define MULTI_PRODUCT_NUM 0x0104 /* Multifunction Composite Gadget */
74 #ifdef CONFIG_USB_G_MULTI_RNDIS
75 MULTI_RNDIS_CONFIG_NUM,
77 #ifdef CONFIG_USB_G_MULTI_CDC
83 static struct usb_device_descriptor device_desc = {
84 .bLength = sizeof device_desc,
85 .bDescriptorType = USB_DT_DEVICE,
87 .bcdUSB = cpu_to_le16(0x0200),
89 .bDeviceClass = USB_CLASS_MISC /* 0xEF */,
93 /* Vendor and product id can be overridden by module parameters. */
94 .idVendor = cpu_to_le16(MULTI_VENDOR_NUM),
95 .idProduct = cpu_to_le16(MULTI_PRODUCT_NUM),
99 static const struct usb_descriptor_header *otg_desc[] = {
100 (struct usb_descriptor_header *) &(struct usb_otg_descriptor){
101 .bLength = sizeof(struct usb_otg_descriptor),
102 .bDescriptorType = USB_DT_OTG,
105 * REVISIT SRP-only hardware is possible, although
106 * it would not be called "OTG" ...
108 .bmAttributes = USB_OTG_SRP | USB_OTG_HNP,
115 #ifdef CONFIG_USB_G_MULTI_RNDIS
116 MULTI_STRING_RNDIS_CONFIG_IDX,
118 #ifdef CONFIG_USB_G_MULTI_CDC
119 MULTI_STRING_CDC_CONFIG_IDX,
123 static struct usb_string strings_dev[] = {
124 #ifdef CONFIG_USB_G_MULTI_RNDIS
125 [MULTI_STRING_RNDIS_CONFIG_IDX].s = "Multifunction with RNDIS",
127 #ifdef CONFIG_USB_G_MULTI_CDC
128 [MULTI_STRING_CDC_CONFIG_IDX].s = "Multifunction with CDC ECM",
130 { } /* end of list */
133 static struct usb_gadget_strings *dev_strings[] = {
134 &(struct usb_gadget_strings){
135 .language = 0x0409, /* en-us */
136 .strings = strings_dev,
144 /****************************** Configurations ******************************/
146 static struct fsg_module_parameters fsg_mod_data = { .stall = 1 };
147 FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data);
149 static struct fsg_common fsg_common;
151 static u8 hostaddr[ETH_ALEN];
154 /********** RNDIS **********/
158 static __init int rndis_do_config(struct usb_configuration *c)
162 if (gadget_is_otg(c->cdev->gadget)) {
163 c->descriptors = otg_desc;
164 c->bmAttributes |= USB_CONFIG_ATT_WAKEUP;
167 ret = rndis_bind_config(c, hostaddr);
171 ret = acm_bind_config(c, 0);
175 ret = fsg_bind_config(c->cdev, c, &fsg_common);
182 static int rndis_config_register(struct usb_composite_dev *cdev)
184 static struct usb_configuration config = {
185 .bConfigurationValue = MULTI_RNDIS_CONFIG_NUM,
186 .bmAttributes = USB_CONFIG_ATT_SELFPOWER,
189 config.label = strings_dev[MULTI_STRING_RNDIS_CONFIG_IDX].s;
190 config.iConfiguration = strings_dev[MULTI_STRING_RNDIS_CONFIG_IDX].id;
192 return usb_add_config(cdev, &config, rndis_do_config);
197 static int rndis_config_register(struct usb_composite_dev *cdev)
205 /********** CDC ECM **********/
207 #ifdef CONFIG_USB_G_MULTI_CDC
209 static __init int cdc_do_config(struct usb_configuration *c)
213 if (gadget_is_otg(c->cdev->gadget)) {
214 c->descriptors = otg_desc;
215 c->bmAttributes |= USB_CONFIG_ATT_WAKEUP;
218 ret = ecm_bind_config(c, hostaddr);
222 ret = acm_bind_config(c, 0);
226 ret = fsg_bind_config(c->cdev, c, &fsg_common);
233 static int cdc_config_register(struct usb_composite_dev *cdev)
235 static struct usb_configuration config = {
236 .bConfigurationValue = MULTI_CDC_CONFIG_NUM,
237 .bmAttributes = USB_CONFIG_ATT_SELFPOWER,
240 config.label = strings_dev[MULTI_STRING_CDC_CONFIG_IDX].s;
241 config.iConfiguration = strings_dev[MULTI_STRING_CDC_CONFIG_IDX].id;
243 return usb_add_config(cdev, &config, cdc_do_config);
248 static int cdc_config_register(struct usb_composite_dev *cdev)
257 /****************************** Gadget Bind ******************************/
260 static int __ref multi_bind(struct usb_composite_dev *cdev)
262 struct usb_gadget *gadget = cdev->gadget;
265 if (!can_support_ecm(cdev->gadget)) {
266 dev_err(&gadget->dev, "controller '%s' not usable\n",
271 /* set up network link layer */
272 status = gether_setup(cdev->gadget, hostaddr);
276 /* set up serial link layer */
277 status = gserial_setup(cdev->gadget, 1);
281 /* set up mass storage function */
284 retp = fsg_common_from_params(&fsg_common, cdev, &fsg_mod_data);
286 status = PTR_ERR(retp);
292 gcnum = usb_gadget_controller_number(gadget);
294 device_desc.bcdDevice = cpu_to_le16(0x0300 | gcnum);
296 WARNING(cdev, "controller '%s' not recognized\n", gadget->name);
297 device_desc.bcdDevice = cpu_to_le16(0x0300 | 0x0099);
300 /* allocate string IDs */
301 status = usb_string_ids_tab(cdev, strings_dev);
302 if (unlikely(status < 0))
305 /* register configurations */
306 status = rndis_config_register(cdev);
307 if (unlikely(status < 0))
310 status = cdc_config_register(cdev);
311 if (unlikely(status < 0))
315 dev_info(&gadget->dev, DRIVER_DESC "\n");
316 fsg_common_put(&fsg_common);
322 fsg_common_put(&fsg_common);
330 static int __exit multi_unbind(struct usb_composite_dev *cdev)
338 /****************************** Some noise ******************************/
341 static struct usb_composite_driver multi_driver = {
344 .strings = dev_strings,
345 .max_speed = USB_SPEED_HIGH,
346 .unbind = __exit_p(multi_unbind),
347 .iProduct = DRIVER_DESC,
352 static int __init multi_init(void)
354 return usb_composite_probe(&multi_driver, multi_bind);
356 module_init(multi_init);
358 static void __exit multi_exit(void)
360 usb_composite_unregister(&multi_driver);
362 module_exit(multi_exit);