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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.c353
1 files changed, 0 insertions, 353 deletions
diff --git a/drivers/usb/serial/airprime.c b/drivers/usb/serial/airprime.c
deleted file mode 100644
index 0798c14ce787..000000000000
--- a/drivers/usb/serial/airprime.c
+++ /dev/null
@@ -1,353 +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->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->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 usb_serial_port *port, struct file *filp)
134{
135 struct airprime_private *priv = usb_get_serial_port_data(port);
136 struct usb_serial *serial = port->serial;
137 struct urb *urb;
138 char *buffer = NULL;
139 int i;
140 int result = 0;
141
142 dbg("%s - port %d", __func__, port->number);
143
144 /* initialize our private data structure if it isn't already created */
145 if (!priv) {
146 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
147 if (!priv) {
148 result = -ENOMEM;
149 goto out;
150 }
151 spin_lock_init(&priv->lock);
152 usb_set_serial_port_data(port, priv);
153 }
154
155 /* Set some sane defaults */
156 priv->rts_state = 1;
157 priv->dtr_state = 1;
158
159 for (i = 0; i < NUM_READ_URBS; ++i) {
160 buffer = kmalloc(buffer_size, GFP_KERNEL);
161 if (!buffer) {
162 dev_err(&port->dev, "%s - out of memory.\n",
163 __func__);
164 result = -ENOMEM;
165 goto errout;
166 }
167 urb = usb_alloc_urb(0, GFP_KERNEL);
168 if (!urb) {
169 kfree(buffer);
170 dev_err(&port->dev, "%s - no more urbs?\n",
171 __func__);
172 result = -ENOMEM;
173 goto errout;
174 }
175 usb_fill_bulk_urb(urb, serial->dev,
176 usb_rcvbulkpipe(serial->dev,
177 port->bulk_out_endpointAddress),
178 buffer, buffer_size,
179 airprime_read_bulk_callback, port);
180 result = usb_submit_urb(urb, GFP_KERNEL);
181 if (result) {
182 usb_free_urb(urb);
183 kfree(buffer);
184 dev_err(&port->dev,
185 "%s - failed submitting read urb %d for port %d, error %d\n",
186 __func__, i, port->number, result);
187 goto errout;
188 }
189 /* remember this urb so we can kill it when the
190 port is closed */
191 priv->read_urbp[i] = urb;
192 }
193
194 airprime_send_setup(port);
195
196 goto out;
197
198 errout:
199 /* some error happened, cancel any submitted urbs and clean up
200 anything that got allocated successfully */
201
202 while (i-- != 0) {
203 urb = priv->read_urbp[i];
204 buffer = urb->transfer_buffer;
205 usb_kill_urb(urb);
206 usb_free_urb(urb);
207 kfree(buffer);
208 }
209
210 out:
211 return result;
212}
213
214static void airprime_close(struct usb_serial_port *port, struct file *filp)
215{
216 struct airprime_private *priv = usb_get_serial_port_data(port);
217 int i;
218
219 dbg("%s - port %d", __func__, port->number);
220
221 priv->rts_state = 0;
222 priv->dtr_state = 0;
223
224 mutex_lock(&port->serial->disc_mutex);
225 if (!port->serial->disconnected)
226 airprime_send_setup(port);
227 mutex_unlock(&port->serial->disc_mutex);
228
229 for (i = 0; i < NUM_READ_URBS; ++i) {
230 usb_kill_urb(priv->read_urbp[i]);
231 kfree(priv->read_urbp[i]->transfer_buffer);
232 usb_free_urb(priv->read_urbp[i]);
233 }
234
235 /* free up private structure */
236 kfree(priv);
237 usb_set_serial_port_data(port, NULL);
238}
239
240static int airprime_write(struct usb_serial_port *port,
241 const unsigned char *buf, int count)
242{
243 struct airprime_private *priv = usb_get_serial_port_data(port);
244 struct usb_serial *serial = port->serial;
245 struct urb *urb;
246 unsigned char *buffer;
247 unsigned long flags;
248 int status;
249 dbg("%s - port %d", __func__, port->number);
250
251 spin_lock_irqsave(&priv->lock, flags);
252 if (priv->outstanding_urbs > NUM_WRITE_URBS) {
253 spin_unlock_irqrestore(&priv->lock, flags);
254 dbg("%s - write limit hit\n", __func__);
255 return 0;
256 }
257 spin_unlock_irqrestore(&priv->lock, flags);
258 buffer = kmalloc(count, GFP_ATOMIC);
259 if (!buffer) {
260 dev_err(&port->dev, "out of memory\n");
261 return -ENOMEM;
262 }
263 urb = usb_alloc_urb(0, GFP_ATOMIC);
264 if (!urb) {
265 dev_err(&port->dev, "no more free urbs\n");
266 kfree(buffer);
267 return -ENOMEM;
268 }
269 memcpy(buffer, buf, count);
270
271 usb_serial_debug_data(debug, &port->dev, __func__, count, buffer);
272
273 usb_fill_bulk_urb(urb, serial->dev,
274 usb_sndbulkpipe(serial->dev,
275 port->bulk_out_endpointAddress),
276 buffer, count,
277 airprime_write_bulk_callback, port);
278
279 /* send it down the pipe */
280 status = usb_submit_urb(urb, GFP_ATOMIC);
281 if (status) {
282 dev_err(&port->dev,
283 "%s - usb_submit_urb(write bulk) failed with status = %d\n",
284 __func__, status);
285 count = status;
286 kfree(buffer);
287 } else {
288 spin_lock_irqsave(&priv->lock, flags);
289 ++priv->outstanding_urbs;
290 spin_unlock_irqrestore(&priv->lock, flags);
291 }
292 /* we are done with this urb, so let the host driver
293 * really free it when it is finished with it */
294 usb_free_urb(urb);
295 return count;
296}
297
298static struct usb_driver airprime_driver = {
299 .name = "airprime",
300 .probe = usb_serial_probe,
301 .disconnect = usb_serial_disconnect,
302 .id_table = id_table,
303 .no_dynamic_id = 1,
304};
305
306static struct usb_serial_driver airprime_device = {
307 .driver = {
308 .owner = THIS_MODULE,
309 .name = "airprime",
310 },
311 .usb_driver = &airprime_driver,
312 .id_table = id_table,
313 .open = airprime_open,
314 .close = airprime_close,
315 .write = airprime_write,
316};
317
318static int __init airprime_init(void)
319{
320 int retval;
321
322 airprime_device.num_ports = endpoints;
323 if (endpoints < 0 || endpoints >= MAX_BULK_EPS)
324 airprime_device.num_ports = NUM_BULK_EPS;
325
326 retval = usb_serial_register(&airprime_device);
327 if (retval)
328 return retval;
329 retval = usb_register(&airprime_driver);
330 if (retval)
331 usb_serial_deregister(&airprime_device);
332 return retval;
333}
334
335static void __exit airprime_exit(void)
336{
337 dbg("%s", __func__);
338
339 usb_deregister(&airprime_driver);
340 usb_serial_deregister(&airprime_device);
341}
342
343module_init(airprime_init);
344module_exit(airprime_exit);
345MODULE_LICENSE("GPL");
346
347module_param(debug, bool, S_IRUGO | S_IWUSR);
348MODULE_PARM_DESC(debug, "Debug enabled");
349module_param(buffer_size, int, 0);
350MODULE_PARM_DESC(buffer_size,
351 "Size of the transfer buffers in bytes (default 4096)");
352module_param(endpoints, int, 0);
353MODULE_PARM_DESC(endpoints, "Number of bulk EPs to configure (default 3)");
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-24 12:42:33 -0500