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path: root/drivers/usb/serial/airprime.c
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Diffstat (limited to 'drivers/usb/serial/airprime.c')
-rw-r--r--drivers/usb/serial/airprime.c355
1 files changed, 0 insertions, 355 deletions
diff --git a/drivers/usb/serial/airprime.c b/drivers/usb/serial/airprime.c
deleted file mode 100644
index b3f1d1e82468..000000000000
--- a/drivers/usb/serial/airprime.c
+++ /dev/null
@@ -1,355 +0,0 @@
1/*
2 * AirPrime CDMA Wireless Serial USB driver
3 *
4 * Copyright (C) 2005-2006 Greg Kroah-Hartman <gregkh@suse.de>
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License version
8 * 2 as published by the Free Software Foundation.
9 */
10
11#include <linux/kernel.h>
12#include <linux/init.h>
13#include <linux/tty.h>
14#include <linux/tty_flip.h>
15#include <linux/module.h>
16#include <linux/usb.h>
17#include <linux/usb/serial.h>
18
19static struct usb_device_id id_table [] = {
20 { USB_DEVICE(0x0c88, 0x17da) }, /* Kyocera Wireless KPC650/Passport */
21 { },
22};
23MODULE_DEVICE_TABLE(usb, id_table);
24
25#define URB_TRANSFER_BUFFER_SIZE 4096
26#define NUM_READ_URBS 4
27#define NUM_WRITE_URBS 4
28#define NUM_BULK_EPS 3
29#define MAX_BULK_EPS 6
30
31/* if overridden by the user, then use their value for the size of the
32 * read and write urbs, and the number of endpoints */
33static int buffer_size = URB_TRANSFER_BUFFER_SIZE;
34static int endpoints = NUM_BULK_EPS;
35static int debug;
36struct airprime_private {
37 spinlock_t lock;
38 int outstanding_urbs;
39 int throttled;
40 struct urb *read_urbp[NUM_READ_URBS];
41
42 /* Settings for the port */
43 int rts_state; /* Handshaking pins (outputs) */
44 int dtr_state;
45 int cts_state; /* Handshaking pins (inputs) */
46 int dsr_state;
47 int dcd_state;
48 int ri_state;
49};
50
51static int airprime_send_setup(struct usb_serial_port *port)
52{
53 struct usb_serial *serial = port->serial;
54 struct airprime_private *priv;
55
56 dbg("%s", __func__);
57
58 if (port->number != 0)
59 return 0;
60
61 priv = usb_get_serial_port_data(port);
62
63 if (port->port.tty) {
64 int val = 0;
65 if (priv->dtr_state)
66 val |= 0x01;
67 if (priv->rts_state)
68 val |= 0x02;
69
70 return usb_control_msg(serial->dev,
71 usb_rcvctrlpipe(serial->dev, 0),
72 0x22, 0x21, val, 0, NULL, 0,
73 USB_CTRL_SET_TIMEOUT);
74 }
75
76 return 0;
77}
78
79static void airprime_read_bulk_callback(struct urb *urb)
80{
81 struct usb_serial_port *port = urb->context;
82 unsigned char *data = urb->transfer_buffer;
83 struct tty_struct *tty;
84 int result;
85 int status = urb->status;
86
87 dbg("%s - port %d", __func__, port->number);
88
89 if (status) {
90 dbg("%s - nonzero read bulk status received: %d",
91 __func__, status);
92 return;
93 }
94 usb_serial_debug_data(debug, &port->dev, __func__,
95 urb->actual_length, data);
96
97 tty = port->port.tty;
98 if (tty && urb->actual_length) {
99 tty_insert_flip_string(tty, data, urb->actual_length);
100 tty_flip_buffer_push(tty);
101 }
102
103 result = usb_submit_urb(urb, GFP_ATOMIC);
104 if (result)
105 dev_err(&port->dev,
106 "%s - failed resubmitting read urb, error %d\n",
107 __func__, result);
108 return;
109}
110
111static void airprime_write_bulk_callback(struct urb *urb)
112{
113 struct usb_serial_port *port = urb->context;
114 struct airprime_private *priv = usb_get_serial_port_data(port);
115 int status = urb->status;
116 unsigned long flags;
117
118 dbg("%s - port %d", __func__, port->number);
119
120 /* free up the transfer buffer, as usb_free_urb() does not do this */
121 kfree(urb->transfer_buffer);
122
123 if (status)
124 dbg("%s - nonzero write bulk status received: %d",
125 __func__, status);
126 spin_lock_irqsave(&priv->lock, flags);
127 --priv->outstanding_urbs;
128 spin_unlock_irqrestore(&priv->lock, flags);
129
130 usb_serial_port_softint(port);
131}
132
133static int airprime_open(struct tty_struct *tty, struct usb_serial_port *port,
134 struct file *filp)
135{
136 struct airprime_private *priv = usb_get_serial_port_data(port);
137 struct usb_serial *serial = port->serial;
138 struct urb *urb;
139 char *buffer = NULL;
140 int i;
141 int result = 0;
142
143 dbg("%s - port %d", __func__, port->number);
144
145 /* initialize our private data structure if it isn't already created */
146 if (!priv) {
147 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
148 if (!priv) {
149 result = -ENOMEM;
150 goto out;
151 }
152 spin_lock_init(&priv->lock);
153 usb_set_serial_port_data(port, priv);
154 }
155
156 /* Set some sane defaults */
157 priv->rts_state = 1;
158 priv->dtr_state = 1;
159
160 for (i = 0; i < NUM_READ_URBS; ++i) {
161 buffer = kmalloc(buffer_size, GFP_KERNEL);
162 if (!buffer) {
163 dev_err(&port->dev, "%s - out of memory.\n",
164 __func__);
165 result = -ENOMEM;
166 goto errout;
167 }
168 urb = usb_alloc_urb(0, GFP_KERNEL);
169 if (!urb) {
170 kfree(buffer);
171 dev_err(&port->dev, "%s - no more urbs?\n",
172 __func__);
173 result = -ENOMEM;
174 goto errout;
175 }
176 usb_fill_bulk_urb(urb, serial->dev,
177 usb_rcvbulkpipe(serial->dev,
178 port->bulk_out_endpointAddress),
179 buffer, buffer_size,
180 airprime_read_bulk_callback, port);
181 result = usb_submit_urb(urb, GFP_KERNEL);
182 if (result) {
183 usb_free_urb(urb);
184 kfree(buffer);
185 dev_err(&port->dev,
186 "%s - failed submitting read urb %d for port %d, error %d\n",
187 __func__, i, port->number, result);
188 goto errout;
189 }
190 /* remember this urb so we can kill it when the
191 port is closed */
192 priv->read_urbp[i] = urb;
193 }
194
195 airprime_send_setup(port);
196
197 goto out;
198
199 errout:
200 /* some error happened, cancel any submitted urbs and clean up
201 anything that got allocated successfully */
202
203 while (i-- != 0) {
204 urb = priv->read_urbp[i];
205 buffer = urb->transfer_buffer;
206 usb_kill_urb(urb);
207 usb_free_urb(urb);
208 kfree(buffer);
209 }
210
211 out:
212 return result;
213}
214
215static void airprime_close(struct tty_struct *tty,
216 struct usb_serial_port *port, struct file *filp)
217{
218 struct airprime_private *priv = usb_get_serial_port_data(port);
219 int i;
220
221 dbg("%s - port %d", __func__, port->number);
222
223 priv->rts_state = 0;
224 priv->dtr_state = 0;
225
226 mutex_lock(&port->serial->disc_mutex);
227 if (!port->serial->disconnected)
228 airprime_send_setup(port);
229 mutex_unlock(&port->serial->disc_mutex);
230
231 for (i = 0; i < NUM_READ_URBS; ++i) {
232 usb_kill_urb(priv->read_urbp[i]);
233 kfree(priv->read_urbp[i]->transfer_buffer);
234 usb_free_urb(priv->read_urbp[i]);
235 }
236
237 /* free up private structure */
238 kfree(priv);
239 usb_set_serial_port_data(port, NULL);
240}
241
242static int airprime_write(struct tty_struct *tty, struct usb_serial_port *port,
243 const unsigned char *buf, int count)
244{
245 struct airprime_private *priv = usb_get_serial_port_data(port);
246 struct usb_serial *serial = port->serial;
247 struct urb *urb;
248 unsigned char *buffer;
249 unsigned long flags;
250 int status;
251 dbg("%s - port %d", __func__, port->number);
252
253 spin_lock_irqsave(&priv->lock, flags);
254 if (priv->outstanding_urbs > NUM_WRITE_URBS) {
255 spin_unlock_irqrestore(&priv->lock, flags);
256 dbg("%s - write limit hit\n", __func__);
257 return 0;
258 }
259 spin_unlock_irqrestore(&priv->lock, flags);
260 buffer = kmalloc(count, GFP_ATOMIC);
261 if (!buffer) {
262 dev_err(&port->dev, "out of memory\n");
263 return -ENOMEM;
264 }
265 urb = usb_alloc_urb(0, GFP_ATOMIC);
266 if (!urb) {
267 dev_err(&port->dev, "no more free urbs\n");
268 kfree(buffer);
269 return -ENOMEM;
270 }
271 memcpy(buffer, buf, count);
272
273 usb_serial_debug_data(debug, &port->dev, __func__, count, buffer);
274
275 usb_fill_bulk_urb(urb, serial->dev,
276 usb_sndbulkpipe(serial->dev,
277 port->bulk_out_endpointAddress),
278 buffer, count,
279 airprime_write_bulk_callback, port);
280
281 /* send it down the pipe */
282 status = usb_submit_urb(urb, GFP_ATOMIC);
283 if (status) {
284 dev_err(&port->dev,
285 "%s - usb_submit_urb(write bulk) failed with status = %d\n",
286 __func__, status);
287 count = status;
288 kfree(buffer);
289 } else {
290 spin_lock_irqsave(&priv->lock, flags);
291 ++priv->outstanding_urbs;
292 spin_unlock_irqrestore(&priv->lock, flags);
293 }
294 /* we are done with this urb, so let the host driver
295 * really free it when it is finished with it */
296 usb_free_urb(urb);
297 return count;
298}
299
300static struct usb_driver airprime_driver = {
301 .name = "airprime",
302 .probe = usb_serial_probe,
303 .disconnect = usb_serial_disconnect,
304 .id_table = id_table,
305 .no_dynamic_id = 1,
306};
307
308static struct usb_serial_driver airprime_device = {
309 .driver = {
310 .owner = THIS_MODULE,
311 .name = "airprime",
312 },
313 .usb_driver = &airprime_driver,
314 .id_table = id_table,
315 .open = airprime_open,
316 .close = airprime_close,
317 .write = airprime_write,
318};
319
320static int __init airprime_init(void)
321{
322 int retval;
323
324 airprime_device.num_ports = endpoints;
325 if (endpoints < 0 || endpoints >= MAX_BULK_EPS)
326 airprime_device.num_ports = NUM_BULK_EPS;
327
328 retval = usb_serial_register(&airprime_device);
329 if (retval)
330 return retval;
331 retval = usb_register(&airprime_driver);
332 if (retval)
333 usb_serial_deregister(&airprime_device);
334 return retval;
335}
336
337static void __exit airprime_exit(void)
338{
339 dbg("%s", __func__);
340
341 usb_deregister(&airprime_driver);
342 usb_serial_deregister(&airprime_device);
343}
344
345module_init(airprime_init);
346module_exit(airprime_exit);
347MODULE_LICENSE("GPL");
348
349module_param(debug, bool, S_IRUGO | S_IWUSR);
350MODULE_PARM_DESC(debug, "Debug enabled");
351module_param(buffer_size, int, 0);
352MODULE_PARM_DESC(buffer_size,
353 "Size of the transfer buffers in bytes (default 4096)");
354module_param(endpoints, int, 0);
355MODULE_PARM_DESC(endpoints, "Number of bulk EPs to configure (default 3)");
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-22 06:58:53 -0500