summaryrefslogtreecommitdiff
path: root/drivers/usb/gadget/nokia.c
blob: 3b344b41a167e2c69ecfb5720a29d74684315428 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
/*
 * nokia.c -- Nokia Composite Gadget Driver
 *
 * Copyright (C) 2008-2010 Nokia Corporation
 * Contact: Felipe Balbi <felipe.balbi@nokia.com>
 *
 * This gadget driver borrows from serial.c which is:
 *
 * Copyright (C) 2003 Al Borchers (alborchers@steinerpoint.com)
 * Copyright (C) 2008 by David Brownell
 * Copyright (C) 2008 by Nokia Corporation
 *
 * This software is distributed under the terms of the GNU General
 * Public License ("GPL") as published by the Free Software Foundation,
 * version 2 of that License.
 */

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

#include "u_serial.h"
#include "u_ether.h"
#include "u_phonet.h"
#include "gadget_chips.h"

/* Defines */

#define NOKIA_VERSION_NUM		0x0211
#define NOKIA_LONG_NAME			"N900 (PC-Suite Mode)"

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

/*
 * 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.
 */
#define USBF_OBEX_INCLUDED
#include "f_ecm.c"
#include "f_obex.c"
#include "f_phonet.c"
#include "u_ether.c"

/*-------------------------------------------------------------------------*/
USB_GADGET_COMPOSITE_OPTIONS();

#define NOKIA_VENDOR_ID			0x0421	/* Nokia */
#define NOKIA_PRODUCT_ID		0x01c8	/* Nokia Gadget */

/* string IDs are assigned dynamically */

#define STRING_DESCRIPTION_IDX		USB_GADGET_FIRST_AVAIL_IDX

static char manufacturer_nokia[] = "Nokia";
static const char product_nokia[] = NOKIA_LONG_NAME;
static const char description_nokia[] = "PC-Suite Configuration";

static struct usb_string strings_dev[] = {
	[USB_GADGET_MANUFACTURER_IDX].s = manufacturer_nokia,
	[USB_GADGET_PRODUCT_IDX].s = NOKIA_LONG_NAME,
	[USB_GADGET_SERIAL_IDX].s = "",
	[STRING_DESCRIPTION_IDX].s = description_nokia,
	{  } /* 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		= USB_DT_DEVICE_SIZE,
	.bDescriptorType	= USB_DT_DEVICE,
	.bcdUSB			= __constant_cpu_to_le16(0x0200),
	.bDeviceClass		= USB_CLASS_COMM,
	.idVendor		= __constant_cpu_to_le16(NOKIA_VENDOR_ID),
	.idProduct		= __constant_cpu_to_le16(NOKIA_PRODUCT_ID),
	.bcdDevice		= cpu_to_le16(NOKIA_VERSION_NUM),
	/* .iManufacturer = DYNAMIC */
	/* .iProduct = DYNAMIC */
	.bNumConfigurations =	1,
};

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

/* Module */
MODULE_DESCRIPTION("Nokia composite gadget driver for N900");
MODULE_AUTHOR("Felipe Balbi");
MODULE_LICENSE("GPL");

/*-------------------------------------------------------------------------*/
static struct usb_function *f_acm_cfg1;
static struct usb_function *f_acm_cfg2;
static u8 hostaddr[ETH_ALEN];
static struct eth_dev *the_dev;

enum {
	TTY_PORT_OBEX0,
	TTY_PORT_OBEX1,
	TTY_PORTS_MAX,
};

static unsigned char tty_lines[TTY_PORTS_MAX];

static struct usb_configuration nokia_config_500ma_driver = {
	.label		= "Bus Powered",
	.bConfigurationValue = 1,
	/* .iConfiguration = DYNAMIC */
	.bmAttributes	= USB_CONFIG_ATT_ONE,
	.MaxPower	= 500,
};

static struct usb_configuration nokia_config_100ma_driver = {
	.label		= "Self Powered",
	.bConfigurationValue = 2,
	/* .iConfiguration = DYNAMIC */
	.bmAttributes	= USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER,
	.MaxPower	= 100,
};

static struct usb_function_instance *fi_acm;

static int __init nokia_bind_config(struct usb_configuration *c)
{
	struct usb_function *f_acm;
	int status = 0;

	status = phonet_bind_config(c);
	if (status)
		printk(KERN_DEBUG "could not bind phonet config\n");

	status = obex_bind_config(c, tty_lines[TTY_PORT_OBEX0]);
	if (status)
		printk(KERN_DEBUG "could not bind obex config %d\n", 0);

	status = obex_bind_config(c, tty_lines[TTY_PORT_OBEX1]);
	if (status)
		printk(KERN_DEBUG "could not bind obex config %d\n", 0);

	f_acm = usb_get_function(fi_acm);
	if (IS_ERR(f_acm))
		return PTR_ERR(f_acm);

	status = usb_add_function(c, f_acm);
	if (status)
		goto err_conf;

	status = ecm_bind_config(c, hostaddr, the_dev);
	if (status) {
		pr_debug("could not bind ecm config %d\n", status);
		goto err_ecm;
	}
	if (c == &nokia_config_500ma_driver)
		f_acm_cfg1 = f_acm;
	else
		f_acm_cfg2 = f_acm;

	return status;
err_ecm:
	usb_remove_function(c, f_acm);
err_conf:
	usb_put_function(f_acm);
	return status;
}

static int __init nokia_bind(struct usb_composite_dev *cdev)
{
	struct usb_gadget	*gadget = cdev->gadget;
	int			status;
	int			cur_line;

	status = gphonet_setup(cdev->gadget);
	if (status < 0)
		goto err_phonet;

	for (cur_line = 0; cur_line < TTY_PORTS_MAX; cur_line++) {
		status = gserial_alloc_line(&tty_lines[cur_line]);
		if (status)
			goto err_ether;
	}

	the_dev = gether_setup(cdev->gadget, hostaddr);
	if (IS_ERR(the_dev)) {
		status = PTR_ERR(the_dev);
		goto err_ether;
	}

	status = usb_string_ids_tab(cdev, strings_dev);
	if (status < 0)
		goto err_usb;
	device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id;
	device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id;
	status = strings_dev[STRING_DESCRIPTION_IDX].id;
	nokia_config_500ma_driver.iConfiguration = status;
	nokia_config_100ma_driver.iConfiguration = status;

	if (!gadget_supports_altsettings(gadget))
		goto err_usb;

	fi_acm = usb_get_function_instance("acm");
	if (IS_ERR(fi_acm))
		goto err_usb;

	/* finally register the configuration */
	status = usb_add_config(cdev, &nokia_config_500ma_driver,
			nokia_bind_config);
	if (status < 0)
		goto err_acm_inst;

	status = usb_add_config(cdev, &nokia_config_100ma_driver,
			nokia_bind_config);
	if (status < 0)
		goto err_put_cfg1;

	usb_composite_overwrite_options(cdev, &coverwrite);
	dev_info(&gadget->dev, "%s\n", NOKIA_LONG_NAME);

	return 0;

err_put_cfg1:
	usb_put_function(f_acm_cfg1);
err_acm_inst:
	usb_put_function_instance(fi_acm);
err_usb:
	gether_cleanup(the_dev);
err_ether:
	cur_line--;
	while (cur_line >= 0)
		gserial_free_line(tty_lines[cur_line--]);

	gphonet_cleanup();
err_phonet:
	return status;
}

static int __exit nokia_unbind(struct usb_composite_dev *cdev)
{
	int i;

	usb_put_function(f_acm_cfg1);
	usb_put_function(f_acm_cfg2);
	usb_put_function_instance(fi_acm);
	gphonet_cleanup();

	for (i = 0; i < TTY_PORTS_MAX; i++)
		gserial_free_line(tty_lines[i]);

	gether_cleanup(the_dev);

	return 0;
}

static __refdata struct usb_composite_driver nokia_driver = {
	.name		= "g_nokia",
	.dev		= &device_desc,
	.strings	= dev_strings,
	.max_speed	= USB_SPEED_HIGH,
	.bind		= nokia_bind,
	.unbind		= __exit_p(nokia_unbind),
};

static int __init nokia_init(void)
{
	return usb_composite_probe(&nokia_driver);
}
module_init(nokia_init);

static void __exit nokia_cleanup(void)
{
	usb_composite_unregister(&nokia_driver);
}
module_exit(nokia_cleanup);