[deliverable/linux.git] / drivers / usb / gadget / acm_ms.c

/*
 * acm_ms.c -- Composite driver, with ACM and mass storage support
 *
 * Copyright (C) 2008 David Brownell
 * Copyright (C) 2008 Nokia Corporation
 * Author: David Brownell
 * Modified: Klaus Schwarzkopf <schwarzkopf@sensortherm.de>
 *
 * Heavily based on multi.c and cdc2.c
 *
 * 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.
 */

#include <linux/kernel.h>
#include <linux/utsname.h>

#include "u_serial.h"

#define DRIVER_DESC		"Composite Gadget (ACM + MS)"
#define DRIVER_VERSION		"2011/10/10"

/*-------------------------------------------------------------------------*/

/*
 * DO NOT REUSE THESE IDs with a protocol-incompatible driver!!  Ever!!
 * Instead:  allocate your own, using normal USB-IF procedures.
 */
#define ACM_MS_VENDOR_NUM	0x1d6b	/* Linux Foundation */
#define ACM_MS_PRODUCT_NUM	0x0106	/* Composite Gadget: ACM + MS*/

/*-------------------------------------------------------------------------*/

/*
 * 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_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_MISC /* 0xEF */,
	.bDeviceSubClass =	2,
	.bDeviceProtocol =	1,

	/* .bMaxPacketSize0 = f(hardware) */

	/* Vendor and product id can be overridden by module parameters.  */
	.idVendor =		cpu_to_le16(ACM_MS_VENDOR_NUM),
	.idProduct =		cpu_to_le16(ACM_MS_PRODUCT_NUM),
	/* .bcdDevice = f(hardware) */
	/* .iManufacturer = DYNAMIC */
	/* .iProduct = DYNAMIC */
	/* NO SERIAL NUMBER */
	/*.bNumConfigurations =	DYNAMIC*/
};

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,
};

/****************************** Configurations ******************************/

static struct fsg_module_parameters fsg_mod_data = { .stall = 1 };
FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data);

static struct fsg_common fsg_common;

/*-------------------------------------------------------------------------*/

/*
 * We _always_ have both ACM and mass storage functions.
 */
static int __init acm_ms_do_config(struct usb_configuration *c)
{
	int	status;

	if (gadget_is_otg(c->cdev->gadget)) {
		c->descriptors = otg_desc;
		c->bmAttributes |= USB_CONFIG_ATT_WAKEUP;
	}


	status = acm_bind_config(c, 0);
	if (status < 0)
		return status;

	status = fsg_bind_config(c->cdev, c, &fsg_common);
	if (status < 0)
		return status;

	return 0;
}

static struct usb_configuration acm_ms_config_driver = {
	.label			= DRIVER_DESC,
	.bConfigurationValue	= 1,
	/* .iConfiguration = DYNAMIC */
	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
};

/*-------------------------------------------------------------------------*/

static int __init acm_ms_bind(struct usb_composite_dev *cdev)
{
	int			gcnum;
	struct usb_gadget	*gadget = cdev->gadget;
	int			status;
	void			*retp;

	/* set up serial link layer */
	status = gserial_setup(cdev->gadget, 1);
	if (status < 0)
		return status;

	/* set up mass storage function */
	retp = fsg_common_from_params(&fsg_common, cdev, &fsg_mod_data);
	if (IS_ERR(retp)) {
		status = PTR_ERR(retp);
		goto fail0;
	}

	/* set bcdDevice */
	gcnum = usb_gadget_controller_number(gadget);
	if (gcnum >= 0) {
		device_desc.bcdDevice = cpu_to_le16(0x0300 | gcnum);
	} else {
		WARNING(cdev, "controller '%s' not recognized; trying %s\n",
				gadget->name,
				acm_ms_config_driver.label);
		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 fail1;
	strings_dev[STRING_MANUFACTURER_IDX].id = status;
	device_desc.iManufacturer = status;

	status = usb_string_id(cdev);
	if (status < 0)
		goto fail1;
	strings_dev[STRING_PRODUCT_IDX].id = status;
	device_desc.iProduct = status;

	/* register our configuration */
	status = usb_add_config(cdev, &acm_ms_config_driver, acm_ms_do_config);
	if (status < 0)
		goto fail1;

	dev_info(&gadget->dev, "%s, version: " DRIVER_VERSION "\n",
			DRIVER_DESC);
	fsg_common_put(&fsg_common);
	return 0;

	/* error recovery */
fail1:
	fsg_common_put(&fsg_common);
fail0:
	gserial_cleanup();
	return status;
}

static int __exit acm_ms_unbind(struct usb_composite_dev *cdev)
{
	gserial_cleanup();

	return 0;
}

static struct usb_composite_driver acm_ms_driver = {
	.name		= "g_acm_ms",
	.dev		= &device_desc,
	.max_speed	= USB_SPEED_SUPER,
	.strings	= dev_strings,
	.unbind		= __exit_p(acm_ms_unbind),
};

MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_AUTHOR("Klaus Schwarzkopf <schwarzkopf@sensortherm.de>");
MODULE_LICENSE("GPL v2");

static int __init init(void)
{
	return usb_composite_probe(&acm_ms_driver, acm_ms_bind);
}
module_init(init);

static void __exit cleanup(void)
{
	usb_composite_unregister(&acm_ms_driver);
}
module_exit(cleanup);
Commit	Line	Data
fa3ae0c1 KS	1	/*
	2	* acm_ms.c -- Composite driver, with ACM and mass storage support
	3	*
	4	* Copyright (C) 2008 David Brownell
	5	* Copyright (C) 2008 Nokia Corporation
	6	* Author: David Brownell
	7	* Modified: Klaus Schwarzkopf <schwarzkopf@sensortherm.de>
	8	*
	9	* Heavily based on multi.c and cdc2.c
	10	*
	11	* This program is free software; you can redistribute it and/or modify
	12	* it under the terms of the GNU General Public License as published by
	13	* the Free Software Foundation; either version 2 of the License, or
	14	* (at your option) any later version.
	15	*/
	16
	17	#include <linux/kernel.h>
	18	#include <linux/utsname.h>
	19
	20	#include "u_serial.h"
	21
	22	#define DRIVER_DESC "Composite Gadget (ACM + MS)"
	23	#define DRIVER_VERSION "2011/10/10"
	24
	25	/-------------------------------------------------------------------------/
	26
	27	/*
	28	* DO NOT REUSE THESE IDs with a protocol-incompatible driver!! Ever!!
	29	* Instead: allocate your own, using normal USB-IF procedures.
	30	*/
	31	#define ACM_MS_VENDOR_NUM 0x1d6b /* Linux Foundation */
	32	#define ACM_MS_PRODUCT_NUM 0x0106 /* Composite Gadget: ACM + MS*/
	33
	34	/-------------------------------------------------------------------------/
	35
	36	/*
	37	* Kbuild is not very cooperative with respect to linking separately
	38	* compiled library objects into one module. So for now we won't use
	39	* separate compilation ... ensuring init/exit sections work to shrink
	40	* the runtime footprint, and giving us at least some parts of what
	41	* a "gcc --combine ... part1.c part2.c part3.c ... " build would.
	42	*/
	43
	44	#include "composite.c"
	45	#include "usbstring.c"
	46	#include "config.c"
	47	#include "epautoconf.c"
	48	#include "u_serial.c"
	49	#include "f_acm.c"
	50	#include "f_mass_storage.c"
	51
	52	/-------------------------------------------------------------------------/
	53
	54	static struct usb_device_descriptor device_desc = {
	55	.bLength = sizeof device_desc,
	56	.bDescriptorType = USB_DT_DEVICE,
	57
	58	.bcdUSB = cpu_to_le16(0x0200),
	59
	60	.bDeviceClass = USB_CLASS_MISC /* 0xEF */,
	61	.bDeviceSubClass = 2,
	62	.bDeviceProtocol = 1,
	63
	64	/* .bMaxPacketSize0 = f(hardware) */
65
66	/* Vendor and product id can be overridden by module parameters. */
67	.idVendor = cpu_to_le16(ACM_MS_VENDOR_NUM),
68	.idProduct = cpu_to_le16(ACM_MS_PRODUCT_NUM),
69	/* .bcdDevice = f(hardware) */
70	/* .iManufacturer = DYNAMIC */
71	/* .iProduct = DYNAMIC */
72	/* NO SERIAL NUMBER */
73	/.bNumConfigurations = DYNAMIC/
74	};
75
76	static struct usb_otg_descriptor otg_descriptor = {
77	.bLength = sizeof otg_descriptor,
78	.bDescriptorType = USB_DT_OTG,
79
80	/*
81	* REVISIT SRP-only hardware is possible, although
82	* it would not be called "OTG" ...
83	*/
84	.bmAttributes = USB_OTG_SRP \| USB_OTG_HNP,
85	};
86
87	static const struct usb_descriptor_header *otg_desc[] = {
88	(struct usb_descriptor_header *) &otg_descriptor,
89	NULL,
90	};
91
92
93	/* string IDs are assigned dynamically */
94
95	#define STRING_MANUFACTURER_IDX 0
96	#define STRING_PRODUCT_IDX 1
97
98	static char manufacturer[50];
99
100	static struct usb_string strings_dev[] = {
101	[STRING_MANUFACTURER_IDX].s = manufacturer,
102	[STRING_PRODUCT_IDX].s = DRIVER_DESC,
103	{ } /* end of list */
104	};
105
106	static struct usb_gadget_strings stringtab_dev = {
107	.language = 0x0409, /* en-us */
108	.strings = strings_dev,
109	};
110
111	static struct usb_gadget_strings *dev_strings[] = {
112	&stringtab_dev,
113	NULL,
114	};
115
116	/**************************** Configurations ****************************/
117
118	static struct fsg_module_parameters fsg_mod_data = { .stall = 1 };
119	FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data);
120
121	static struct fsg_common fsg_common;
122
123	/-------------------------------------------------------------------------/
124
125	/*
126	* We _always_ have both ACM and mass storage functions.
127	*/
128	static int __init acm_ms_do_config(struct usb_configuration *c)
129	{
130	int status;
131
132	if (gadget_is_otg(c->cdev->gadget)) {
133	c->descriptors = otg_desc;
134	c->bmAttributes \|= USB_CONFIG_ATT_WAKEUP;
135	}
136
137
138	status = acm_bind_config(c, 0);
139	if (status < 0)
140	return status;
141
142	status = fsg_bind_config(c->cdev, c, &fsg_common);
143	if (status < 0)
144	return status;
145
146	return 0;
147	}
148
149	static struct usb_configuration acm_ms_config_driver = {
150	.label = DRIVER_DESC,
151	.bConfigurationValue = 1,
152	/* .iConfiguration = DYNAMIC */
153	.bmAttributes = USB_CONFIG_ATT_SELFPOWER,
154	};
155
156	/-------------------------------------------------------------------------/
157
158	static int __init acm_ms_bind(struct usb_composite_dev *cdev)
159	{
160	int gcnum;
161	struct usb_gadget *gadget = cdev->gadget;
162	int status;
163	void *retp;
164
165	/* set up serial link layer */
166	status = gserial_setup(cdev->gadget, 1);
167	if (status < 0)
168	return status;
169
170	/* set up mass storage function */
171	retp = fsg_common_from_params(&fsg_common, cdev, &fsg_mod_data);
172	if (IS_ERR(retp)) {
173	status = PTR_ERR(retp);
174	goto fail0;
175	}
176
177	/* set bcdDevice */
178	gcnum = usb_gadget_controller_number(gadget);
179	if (gcnum >= 0) {
180	device_desc.bcdDevice = cpu_to_le16(0x0300 \| gcnum);
181	} else {
182	WARNING(cdev, "controller '%s' not recognized; trying %s\n",
183	gadget->name,
184	acm_ms_config_driver.label);
185	device_desc.bcdDevice =
186	cpu_to_le16(0x0300 \| 0x0099);
187	}
188
189	/*
190	* Allocate string descriptor numbers ... note that string
191	* contents can be overridden by the composite_dev glue.
192	*/
193
194	/* device descriptor strings: manufacturer, product */
195	snprintf(manufacturer, sizeof manufacturer, "%s %s with %s",
196	init_utsname()->sysname, init_utsname()->release,
197	gadget->name);
198	status = usb_string_id(cdev);
199	if (status < 0)
200	goto fail1;
201	strings_dev[STRING_MANUFACTURER_IDX].id = status;
202	device_desc.iManufacturer = status;
203
204	status = usb_string_id(cdev);
205	if (status < 0)
206	goto fail1;
207	strings_dev[STRING_PRODUCT_IDX].id = status;
208	device_desc.iProduct = status;
209
210	/* register our configuration */
211	status = usb_add_config(cdev, &acm_ms_config_driver, acm_ms_do_config);
212	if (status < 0)
213	goto fail1;
214
215	dev_info(&gadget->dev, "%s, version: " DRIVER_VERSION "\n",
216	DRIVER_DESC);
217	fsg_common_put(&fsg_common);
218	return 0;
219
220	/* error recovery */
221	fail1:
222	fsg_common_put(&fsg_common);
223	fail0:
224	gserial_cleanup();
225	return status;
226	}
227
228	static int __exit acm_ms_unbind(struct usb_composite_dev *cdev)
229	{
230	gserial_cleanup();
231
232	return 0;
233	}
234
235	static struct usb_composite_driver acm_ms_driver = {
236	.name = "g_acm_ms",
237	.dev = &device_desc,
6f47209b	238	.max_speed = USB_SPEED_SUPER,
fa3ae0c1 KS	239	.strings = dev_strings,
	240	.unbind = __exit_p(acm_ms_unbind),
	241	};
	242
	243	MODULE_DESCRIPTION(DRIVER_DESC);
	244	MODULE_AUTHOR("Klaus Schwarzkopf <schwarzkopf@sensortherm.de>");
	245	MODULE_LICENSE("GPL v2");
	246
	247	static int __init init(void)
	248	{
	249	return usb_composite_probe(&acm_ms_driver, acm_ms_bind);
	250	}
	251	module_init(init);
	252
	253	static void __exit cleanup(void)
	254	{
	255	usb_composite_unregister(&acm_ms_driver);
	256	}
	257	module_exit(cleanup);