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tty: Bring the usb tty port structure into more use
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / usb / serial / visor.c
CommitLineData
1da177e4
LT		 1/*
2 * USB HandSpring Visor, Palm m50x, and Sony Clie driver
3 * (supports all of the Palm OS USB devices)
4 *
5 * Copyright (C) 1999 - 2004
6 * Greg Kroah-Hartman (greg@kroah.com)
7 *
4d0dce3e
GKH		 8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License version
10 * 2 as published by the Free Software Foundation.
1da177e4 11 *
d60d4396
AC		 12 * See Documentation/usb/usb-serial.txt for more information on using this
13 * driver
1da177e4 14 *
1da177e4
LT		 15 */
16
1da177e4
LT		 17#include <linux/kernel.h>
18#include <linux/errno.h>
19#include <linux/init.h>
20#include <linux/slab.h>
21#include <linux/tty.h>
22#include <linux/tty_driver.h>
23#include <linux/tty_flip.h>
24#include <linux/module.h>
25#include <linux/moduleparam.h>
26#include <linux/spinlock.h>
d60d4396 27#include <linux/uaccess.h>
1da177e4 28#include <linux/usb.h>
a969888c 29#include <linux/usb/serial.h>
1da177e4
LT		 30#include "visor.h"
31
32/*
33 * Version Information
34 */
1da177e4
LT		 35#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>"
36#define DRIVER_DESC "USB HandSpring Visor / Palm OS driver"
37
38/* function prototypes for a handspring visor */
d60d4396
AC		 39static int visor_open(struct tty_struct *tty, struct usb_serial_port *port,
40 struct file *filp);
335f8514 41static void visor_close(struct usb_serial_port *port);
d60d4396
AC		 42static int visor_write(struct tty_struct *tty, struct usb_serial_port *port,
43 const unsigned char *buf, int count);
44static int visor_write_room(struct tty_struct *tty);
45static void visor_throttle(struct tty_struct *tty);
46static void visor_unthrottle(struct tty_struct *tty);
47static int visor_probe(struct usb_serial *serial,
48 const struct usb_device_id *id);
1da177e4 49static int visor_calc_num_ports(struct usb_serial *serial);
d60d4396
AC		 50static void visor_shutdown(struct usb_serial *serial);
51static void visor_write_bulk_callback(struct urb *urb);
52static void visor_read_bulk_callback(struct urb *urb);
53static void visor_read_int_callback(struct urb *urb);
54static int clie_3_5_startup(struct usb_serial *serial);
55static int treo_attach(struct usb_serial *serial);
56static int clie_5_attach(struct usb_serial *serial);
57static int palm_os_3_probe(struct usb_serial *serial,
58 const struct usb_device_id *id);
59static int palm_os_4_probe(struct usb_serial *serial,
60 const struct usb_device_id *id);
1da177e4
LT		 61
62/* Parameters that may be passed into the module. */
63static int debug;
64static __u16 vendor;
65static __u16 product;
66
67static struct usb_device_id id_table [] = {
68 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID),
69 .driver_info = (kernel_ulong_t)&palm_os_3_probe },
70 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID),
71 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
72 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID),
73 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
04d52461
HS		 74 { USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID),
75 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
1da177e4
LT		 76 { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID),
77 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
78 { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID),
79 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
80 { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID),
81 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
82 { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID),
83 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
84 { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID),
85 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
86 { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID),
87 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
88 { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID),
89 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
90 { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID),
91 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
ac21e9ff
GKH		 92 { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650),
93 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
1da177e4
LT		 94 { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID),
95 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
1da177e4
LT		 96 { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID),
97 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
98 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID),
99 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
100 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID),
101 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
102 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID),
103 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
104 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID),
105 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
106 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID),
107 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
108 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID),
109 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
c8ba84a0
MA		 110 { USB_DEVICE(ACER_VENDOR_ID, ACER_S10_ID),
111 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
d60d4396 112 { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID),
1da177e4 113 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
d60d4396 114 { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID),
1da177e4 115 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
115c1ce5
LB		 116 { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID),
117 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
d60d4396 118 { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID),
1da177e4
LT		 119 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
120 { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID),
121 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
122 { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID),
123 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
124 { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID),
125 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
126 { }, /* optional parameter entry */
127 { } /* Terminating entry */
128};
129
130static struct usb_device_id clie_id_5_table [] = {
131 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID),
132 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
133 { }, /* optional parameter entry */
134 { } /* Terminating entry */
135};
136
137static struct usb_device_id clie_id_3_5_table [] = {
138 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
139 { } /* Terminating entry */
140};
141
142static struct usb_device_id id_table_combined [] = {
143 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID) },
144 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID) },
145 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID) },
04d52461 146 { USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID) },
1da177e4
LT		 147 { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID) },
148 { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID) },
149 { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID) },
150 { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID) },
151 { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID) },
152 { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID) },
153 { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID) },
154 { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID) },
ac21e9ff 155 { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650) },
1da177e4 156 { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID) },
1da177e4
LT		 157 { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID) },
158 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
159 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID) },
160 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID) },
161 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID) },
162 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID) },
163 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID) },
164 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID) },
165 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID) },
166 { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID) },
167 { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID) },
115c1ce5 168 { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID) },
1da177e4
LT		 169 { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID) },
170 { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID) },
171 { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID) },
172 { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID) },
173 { }, /* optional parameter entry */
174 { } /* Terminating entry */
175};
176
d60d4396 177MODULE_DEVICE_TABLE(usb, id_table_combined);
1da177e4
LT		 178
179static struct usb_driver visor_driver = {
1da177e4
LT		 180 .name = "visor",
181 .probe = usb_serial_probe,
182 .disconnect = usb_serial_disconnect,
183 .id_table = id_table_combined,
ba9dc657 184 .no_dynamic_id = 1,
1da177e4
LT		 185};
186
d60d4396
AC		 187/* All of the device info needed for the Handspring Visor,
188 and Palm 4.0 devices */
ea65370d 189static struct usb_serial_driver handspring_device = {
18fcac35
GKH		 190 .driver = {
191 .owner = THIS_MODULE,
269bda1c 192 .name = "visor",
18fcac35 193 },
269bda1c 194 .description = "Handspring Visor / Palm OS",
d9b1b787 195 .usb_driver = &visor_driver,
1da177e4 196 .id_table = id_table,
1da177e4
LT		 197 .num_ports = 2,
198 .open = visor_open,
199 .close = visor_close,
200 .throttle = visor_throttle,
201 .unthrottle = visor_unthrottle,
202 .attach = treo_attach,
203 .probe = visor_probe,
204 .calc_num_ports = visor_calc_num_ports,
205 .shutdown = visor_shutdown,
1da177e4
LT		 206 .write = visor_write,
207 .write_room = visor_write_room,
1da177e4
LT		 208 .write_bulk_callback = visor_write_bulk_callback,
209 .read_bulk_callback = visor_read_bulk_callback,
210 .read_int_callback = visor_read_int_callback,
211};
212
213/* All of the device info needed for the Clie UX50, TH55 Palm 5.0 devices */
ea65370d 214static struct usb_serial_driver clie_5_device = {
18fcac35
GKH		 215 .driver = {
216 .owner = THIS_MODULE,
269bda1c 217 .name = "clie_5",
18fcac35 218 },
269bda1c 219 .description = "Sony Clie 5.0",
d9b1b787 220 .usb_driver = &visor_driver,
1da177e4 221 .id_table = clie_id_5_table,
1da177e4
LT		 222 .num_ports = 2,
223 .open = visor_open,
224 .close = visor_close,
225 .throttle = visor_throttle,
226 .unthrottle = visor_unthrottle,
227 .attach = clie_5_attach,
228 .probe = visor_probe,
229 .calc_num_ports = visor_calc_num_ports,
230 .shutdown = visor_shutdown,
1da177e4
LT		 231 .write = visor_write,
232 .write_room = visor_write_room,
1da177e4
LT		 233 .write_bulk_callback = visor_write_bulk_callback,
234 .read_bulk_callback = visor_read_bulk_callback,
235 .read_int_callback = visor_read_int_callback,
236};
237
238/* device info for the Sony Clie OS version 3.5 */
ea65370d 239static struct usb_serial_driver clie_3_5_device = {
18fcac35
GKH		 240 .driver = {
241 .owner = THIS_MODULE,
269bda1c 242 .name = "clie_3.5",
18fcac35 243 },
269bda1c 244 .description = "Sony Clie 3.5",
d9b1b787 245 .usb_driver = &visor_driver,
1da177e4 246 .id_table = clie_id_3_5_table,
1da177e4
LT		 247 .num_ports = 1,
248 .open = visor_open,
249 .close = visor_close,
250 .throttle = visor_throttle,
251 .unthrottle = visor_unthrottle,
252 .attach = clie_3_5_startup,
1da177e4
LT		 253 .write = visor_write,
254 .write_room = visor_write_room,
1da177e4
LT		 255 .write_bulk_callback = visor_write_bulk_callback,
256 .read_bulk_callback = visor_read_bulk_callback,
257};
258
259struct visor_private {
260 spinlock_t lock;
261 int bytes_in;
262 int bytes_out;
263 int outstanding_urbs;
b308e74d
ON		 264 unsigned char throttled;
265 unsigned char actually_throttled;
1da177e4
LT		 266};
267
268/* number of outstanding urbs to prevent userspace DoS from happening */
269#define URB_UPPER_LIMIT 42
270
271static int stats;
272
273/******************************************************************************
274 * Handspring Visor specific driver functions
275 ******************************************************************************/
d60d4396
AC		 276static int visor_open(struct tty_struct *tty, struct usb_serial_port *port,
277 struct file *filp)
1da177e4
LT		 278{
279 struct usb_serial *serial = port->serial;
280 struct visor_private *priv = usb_get_serial_port_data(port);
281 unsigned long flags;
282 int result = 0;
283
441b62c1 284 dbg("%s - port %d", __func__, port->number);
1da177e4
LT		 285
286 if (!port->read_urb) {
287 /* this is needed for some brain dead Sony devices */
288 dev_err(&port->dev, "Device lied about number of ports, please use a lower one.\n");
289 return -ENODEV;
290 }
291
292 spin_lock_irqsave(&priv->lock, flags);
293 priv->bytes_in = 0;
294 priv->bytes_out = 0;
1da177e4
LT		 295 priv->throttled = 0;
296 spin_unlock_irqrestore(&priv->lock, flags);
297
1da177e4 298 /* Start reading from the device */
d60d4396
AC		 299 usb_fill_bulk_urb(port->read_urb, serial->dev,
300 usb_rcvbulkpipe(serial->dev,
1da177e4
LT		 301 port->bulk_in_endpointAddress),
302 port->read_urb->transfer_buffer,
303 port->read_urb->transfer_buffer_length,
304 visor_read_bulk_callback, port);
305 result = usb_submit_urb(port->read_urb, GFP_KERNEL);
306 if (result) {
d60d4396
AC		 307 dev_err(&port->dev,
308 "%s - failed submitting read urb, error %d\n",
309 __func__, result);
1da177e4
LT		 310 goto exit;
311 }
d60d4396 312
1da177e4 313 if (port->interrupt_in_urb) {
441b62c1 314 dbg("%s - adding interrupt input for treo", __func__);
1da177e4
LT		 315 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
316 if (result)
d60d4396
AC		 317 dev_err(&port->dev,
318 "%s - failed submitting interrupt urb, error %d\n",
319 __func__, result);
1da177e4 320 }
d60d4396 321exit:
1da177e4
LT		 322 return result;
323}
324
325
335f8514 326static void visor_close(struct usb_serial_port *port)
1da177e4
LT		 327{
328 struct visor_private *priv = usb_get_serial_port_data(port);
329 unsigned char *transfer_buffer;
330
441b62c1 331 dbg("%s - port %d", __func__, port->number);
d60d4396 332
1da177e4
LT		 333 /* shutdown our urbs */
334 usb_kill_urb(port->read_urb);
bcb54a54 335 usb_kill_urb(port->interrupt_in_urb);
1da177e4 336
e33fe4d8
ON		 337 mutex_lock(&port->serial->disc_mutex);
338 if (!port->serial->disconnected) {
339 /* Try to send shutdown message, unless the device is gone */
d60d4396 340 transfer_buffer = kmalloc(0x12, GFP_KERNEL);
e33fe4d8 341 if (transfer_buffer) {
d60d4396 342 usb_control_msg(port->serial->dev,
e33fe4d8
ON		 343 usb_rcvctrlpipe(port->serial->dev, 0),
344 VISOR_CLOSE_NOTIFICATION, 0xc2,
345 0x0000, 0x0000,
346 transfer_buffer, 0x12, 300);
d60d4396 347 kfree(transfer_buffer);
e33fe4d8 348 }
1da177e4 349 }
95bef012 350 mutex_unlock(&port->serial->disc_mutex);
1da177e4
LT		 351
352 if (stats)
353 dev_info(&port->dev, "Bytes In = %d Bytes Out = %d\n",
354 priv->bytes_in, priv->bytes_out);
355}
356
357
95da310e
AC		 358static int visor_write(struct tty_struct *tty, struct usb_serial_port *port,
359 const unsigned char *buf, int count)
1da177e4
LT		 360{
361 struct visor_private *priv = usb_get_serial_port_data(port);
362 struct usb_serial *serial = port->serial;
363 struct urb *urb;
364 unsigned char *buffer;
365 unsigned long flags;
366 int status;
367
441b62c1 368 dbg("%s - port %d", __func__, port->number);
1da177e4
LT		 369
370 spin_lock_irqsave(&priv->lock, flags);
371 if (priv->outstanding_urbs > URB_UPPER_LIMIT) {
372 spin_unlock_irqrestore(&priv->lock, flags);
441b62c1 373 dbg("%s - write limit hit\n", __func__);
1da177e4
LT		 374 return 0;
375 }
b80349b1 376 priv->outstanding_urbs++;
1da177e4
LT		 377 spin_unlock_irqrestore(&priv->lock, flags);
378
d60d4396 379 buffer = kmalloc(count, GFP_ATOMIC);
1da177e4
LT		 380 if (!buffer) {
381 dev_err(&port->dev, "out of memory\n");
b80349b1
ON		 382 count = -ENOMEM;
383 goto error_no_buffer;
1da177e4
LT		 384 }
385
386 urb = usb_alloc_urb(0, GFP_ATOMIC);
387 if (!urb) {
388 dev_err(&port->dev, "no more free urbs\n");
b80349b1
ON		 389 count = -ENOMEM;
390 goto error_no_urb;
1da177e4
LT		 391 }
392
d60d4396 393 memcpy(buffer, buf, count);
1da177e4 394
441b62c1 395 usb_serial_debug_data(debug, &port->dev, __func__, count, buffer);
1da177e4 396
d60d4396
AC		 397 usb_fill_bulk_urb(urb, serial->dev,
398 usb_sndbulkpipe(serial->dev,
1da177e4 399 port->bulk_out_endpointAddress),
d60d4396 400 buffer, count,
1da177e4
LT		 401 visor_write_bulk_callback, port);
402
403 /* send it down the pipe */
404 status = usb_submit_urb(urb, GFP_ATOMIC);
405 if (status) {
d60d4396
AC		 406 dev_err(&port->dev,
407 "%s - usb_submit_urb(write bulk) failed with status = %d\n",
408 __func__, status);
1da177e4 409 count = status;
b80349b1 410 goto error;
1da177e4
LT		 411 } else {
412 spin_lock_irqsave(&priv->lock, flags);
1da177e4
LT		 413 priv->bytes_out += count;
414 spin_unlock_irqrestore(&priv->lock, flags);
415 }
416
417 /* we are done with this urb, so let the host driver
418 * really free it when it is finished with it */
b80349b1 419 usb_free_urb(urb);
1da177e4 420
b80349b1
ON		 421 return count;
422error:
423 usb_free_urb(urb);
424error_no_urb:
425 kfree(buffer);
426error_no_buffer:
427 spin_lock_irqsave(&priv->lock, flags);
428 --priv->outstanding_urbs;
429 spin_unlock_irqrestore(&priv->lock, flags);
1da177e4
LT		 430 return count;
431}
432
433
d60d4396 434static int visor_write_room(struct tty_struct *tty)
1da177e4 435{
95da310e 436 struct usb_serial_port *port = tty->driver_data;
bd97c4f0
PZ		 437 struct visor_private *priv = usb_get_serial_port_data(port);
438 unsigned long flags;
439
441b62c1 440 dbg("%s - port %d", __func__, port->number);
1da177e4
LT		 441
442 /*
443 * We really can take anything the user throws at us
444 * but let's pick a nice big number to tell the tty
bd97c4f0 445 * layer that we have lots of free space, unless we don't.
1da177e4 446 */
bd97c4f0
PZ		 447
448 spin_lock_irqsave(&priv->lock, flags);
449 if (priv->outstanding_urbs > URB_UPPER_LIMIT * 2 / 3) {
450 spin_unlock_irqrestore(&priv->lock, flags);
441b62c1 451 dbg("%s - write limit hit\n", __func__);
bd97c4f0
PZ		 452 return 0;
453 }
454 spin_unlock_irqrestore(&priv->lock, flags);
455
1da177e4
LT		 456 return 2048;
457}
458
459
d60d4396 460static void visor_write_bulk_callback(struct urb *urb)
1da177e4 461{
cdc97792 462 struct usb_serial_port *port = urb->context;
1da177e4 463 struct visor_private *priv = usb_get_serial_port_data(port);
38e8c910 464 int status = urb->status;
1da177e4
LT		 465 unsigned long flags;
466
467 /* free up the transfer buffer, as usb_free_urb() does not do this */
d60d4396 468 kfree(urb->transfer_buffer);
1da177e4 469
441b62c1 470 dbg("%s - port %d", __func__, port->number);
38e8c910
GKH		 471
472 if (status)
1da177e4 473 dbg("%s - nonzero write bulk status received: %d",
441b62c1 474 __func__, status);
1da177e4
LT		 475
476 spin_lock_irqsave(&priv->lock, flags);
477 --priv->outstanding_urbs;
478 spin_unlock_irqrestore(&priv->lock, flags);
479
cf2c7481 480 usb_serial_port_softint(port);
1da177e4
LT		 481}
482
483
d60d4396 484static void visor_read_bulk_callback(struct urb *urb)
1da177e4 485{
cdc97792 486 struct usb_serial_port *port = urb->context;
1da177e4
LT		 487 struct visor_private *priv = usb_get_serial_port_data(port);
488 unsigned char *data = urb->transfer_buffer;
38e8c910 489 int status = urb->status;
1da177e4 490 struct tty_struct *tty;
1da177e4 491 int result;
4a90f09b 492 int available_room = 0;
1da177e4 493
441b62c1 494 dbg("%s - port %d", __func__, port->number);
1da177e4 495
38e8c910
GKH		 496 if (status) {
497 dbg("%s - nonzero read bulk status received: %d",
441b62c1 498 __func__, status);
1da177e4
LT		 499 return;
500 }
501
d60d4396
AC		 502 usb_serial_debug_data(debug, &port->dev, __func__,
503 urb->actual_length, data);
1da177e4 504
4a90f09b
AC		 505 if (urb->actual_length) {
506 tty = tty_port_tty_get(&port->port);
507 if (tty) {
508 available_room = tty_buffer_request_room(tty,
d60d4396 509 urb->actual_length);
4a90f09b
AC		 510 if (available_room) {
511 tty_insert_flip_string(tty, data,
512 available_room);
513 tty_flip_buffer_push(tty);
514 }
515 tty_kref_put(tty);
b308e74d
ON		 516 }
517 spin_lock(&priv->lock);
518 priv->bytes_in += available_room;
519
520 } else {
521 spin_lock(&priv->lock);
1da177e4 522 }
1da177e4
LT		 523
524 /* Continue trying to always read if we should */
b308e74d 525 if (!priv->throttled) {
d60d4396 526 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
1da177e4 527 usb_rcvbulkpipe(port->serial->dev,
d60d4396 528 port->bulk_in_endpointAddress),
1da177e4
LT		 529 port->read_urb->transfer_buffer,
530 port->read_urb->transfer_buffer_length,
531 visor_read_bulk_callback, port);
532 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
533 if (result)
d60d4396
AC		 534 dev_err(&port->dev,
535 "%s - failed resubmitting read urb, error %d\n",
536 __func__, result);
537 } else
b308e74d 538 priv->actually_throttled = 1;
b308e74d 539 spin_unlock(&priv->lock);
1da177e4
LT		 540}
541
d60d4396 542static void visor_read_int_callback(struct urb *urb)
1da177e4 543{
cdc97792 544 struct usb_serial_port *port = urb->context;
38e8c910 545 int status = urb->status;
1da177e4
LT		 546 int result;
547
38e8c910 548 switch (status) {
1da177e4
LT		 549 case 0:
550 /* success */
551 break;
552 case -ECONNRESET:
553 case -ENOENT:
554 case -ESHUTDOWN:
555 /* this urb is terminated, clean up */
556 dbg("%s - urb shutting down with status: %d",
441b62c1 557 __func__, status);
1da177e4
LT		 558 return;
559 default:
560 dbg("%s - nonzero urb status received: %d",
441b62c1 561 __func__, status);
1da177e4
LT		 562 goto exit;
563 }
564
565 /*
566 * This information is still unknown what it can be used for.
567 * If anyone has an idea, please let the author know...
568 *
569 * Rumor has it this endpoint is used to notify when data
570 * is ready to be read from the bulk ones.
571 */
441b62c1 572 usb_serial_debug_data(debug, &port->dev, __func__,
1da177e4
LT		 573 urb->actual_length, urb->transfer_buffer);
574
575exit:
d60d4396 576 result = usb_submit_urb(urb, GFP_ATOMIC);
1da177e4 577 if (result)
d60d4396
AC		 578 dev_err(&urb->dev->dev,
579 "%s - Error %d submitting interrupt urb\n",
580 __func__, result);
1da177e4
LT		 581}
582
d60d4396 583static void visor_throttle(struct tty_struct *tty)
1da177e4 584{
95da310e 585 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 586 struct visor_private *priv = usb_get_serial_port_data(port);
587 unsigned long flags;
588
441b62c1 589 dbg("%s - port %d", __func__, port->number);
1da177e4
LT		 590 spin_lock_irqsave(&priv->lock, flags);
591 priv->throttled = 1;
592 spin_unlock_irqrestore(&priv->lock, flags);
593}
594
595
d60d4396 596static void visor_unthrottle(struct tty_struct *tty)
1da177e4 597{
95da310e 598 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 599 struct visor_private *priv = usb_get_serial_port_data(port);
600 unsigned long flags;
601 int result;
602
441b62c1 603 dbg("%s - port %d", __func__, port->number);
1da177e4
LT		 604 spin_lock_irqsave(&priv->lock, flags);
605 priv->throttled = 0;
b308e74d 606 priv->actually_throttled = 0;
1da177e4
LT		 607 spin_unlock_irqrestore(&priv->lock, flags);
608
609 port->read_urb->dev = port->serial->dev;
610 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
611 if (result)
d60d4396
AC		 612 dev_err(&port->dev,
613 "%s - failed submitting read urb, error %d\n",
614 __func__, result);
1da177e4
LT		 615}
616
d60d4396
AC		 617static int palm_os_3_probe(struct usb_serial *serial,
618 const struct usb_device_id *id)
1da177e4
LT		 619{
620 struct device *dev = &serial->dev->dev;
621 struct visor_connection_info *connection_info;
622 unsigned char *transfer_buffer;
623 char *string;
624 int retval = 0;
625 int i;
626 int num_ports = 0;
627
441b62c1 628 dbg("%s", __func__);
1da177e4 629
d60d4396 630 transfer_buffer = kmalloc(sizeof(*connection_info), GFP_KERNEL);
1da177e4 631 if (!transfer_buffer) {
441b62c1 632 dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __func__,
1da177e4
LT		 633 sizeof(*connection_info));
634 return -ENOMEM;
635 }
636
637 /* send a get connection info request */
d60d4396 638 retval = usb_control_msg(serial->dev,
1da177e4
LT		 639 usb_rcvctrlpipe(serial->dev, 0),
640 VISOR_GET_CONNECTION_INFORMATION,
641 0xc2, 0x0000, 0x0000, transfer_buffer,
642 sizeof(*connection_info), 300);
643 if (retval < 0) {
644 dev_err(dev, "%s - error %d getting connection information\n",
441b62c1 645 __func__, retval);
1da177e4
LT		 646 goto exit;
647 }
648
649 if (retval == sizeof(*connection_info)) {
d60d4396
AC		 650 connection_info = (struct visor_connection_info *)
651 transfer_buffer;
1da177e4
LT		 652
653 num_ports = le16_to_cpu(connection_info->num_ports);
654 for (i = 0; i < num_ports; ++i) {
d60d4396
AC		 655 switch (
656 connection_info->connections[i].port_function_id) {
657 case VISOR_FUNCTION_GENERIC:
658 string = "Generic";
659 break;
660 case VISOR_FUNCTION_DEBUGGER:
661 string = "Debugger";
662 break;
663 case VISOR_FUNCTION_HOTSYNC:
664 string = "HotSync";
665 break;
666 case VISOR_FUNCTION_CONSOLE:
667 string = "Console";
668 break;
669 case VISOR_FUNCTION_REMOTE_FILE_SYS:
670 string = "Remote File System";
671 break;
672 default:
673 string = "unknown";
674 break;
1da177e4
LT		 675 }
676 dev_info(dev, "%s: port %d, is for %s use\n",
269bda1c 677 serial->type->description,
1da177e4
LT		 678 connection_info->connections[i].port, string);
679 }
680 }
681 /*
682 * Handle devices that report invalid stuff here.
683 */
684 if (num_ports == 0 || num_ports > 2) {
d60d4396 685 dev_warn(dev, "%s: No valid connect info available\n",
269bda1c 686 serial->type->description);
1da177e4
LT		 687 num_ports = 2;
688 }
d60d4396 689
269bda1c 690 dev_info(dev, "%s: Number of ports: %d\n", serial->type->description,
1da177e4
LT		 691 num_ports);
692
693 /*
694 * save off our num_ports info so that we can use it in the
695 * calc_num_ports callback
696 */
697 usb_set_serial_data(serial, (void *)(long)num_ports);
698
d60d4396
AC		 699 /* ask for the number of bytes available, but ignore the
700 response as it is broken */
701 retval = usb_control_msg(serial->dev,
1da177e4
LT		 702 usb_rcvctrlpipe(serial->dev, 0),
703 VISOR_REQUEST_BYTES_AVAILABLE,
704 0xc2, 0x0000, 0x0005, transfer_buffer,
705 0x02, 300);
706 if (retval < 0)
707 dev_err(dev, "%s - error %d getting bytes available request\n",
441b62c1 708 __func__, retval);
1da177e4
LT		 709 retval = 0;
710
711exit:
d60d4396 712 kfree(transfer_buffer);
1da177e4
LT		 713
714 return retval;
715}
716
d60d4396
AC		 717static int palm_os_4_probe(struct usb_serial *serial,
718 const struct usb_device_id *id)
1da177e4
LT		 719{
720 struct device *dev = &serial->dev->dev;
721 struct palm_ext_connection_info *connection_info;
722 unsigned char *transfer_buffer;
723 int retval;
724
441b62c1 725 dbg("%s", __func__);
1da177e4 726
d60d4396 727 transfer_buffer = kmalloc(sizeof(*connection_info), GFP_KERNEL);
1da177e4 728 if (!transfer_buffer) {
441b62c1 729 dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __func__,
1da177e4
LT		 730 sizeof(*connection_info));
731 return -ENOMEM;
732 }
733
d60d4396
AC		 734 retval = usb_control_msg(serial->dev,
735 usb_rcvctrlpipe(serial->dev, 0),
1da177e4
LT		 736 PALM_GET_EXT_CONNECTION_INFORMATION,
737 0xc2, 0x0000, 0x0000, transfer_buffer,
d60d4396 738 sizeof(*connection_info), 300);
1da177e4
LT		 739 if (retval < 0)
740 dev_err(dev, "%s - error %d getting connection info\n",
441b62c1 741 __func__, retval);
1da177e4 742 else
441b62c1 743 usb_serial_debug_data(debug, &serial->dev->dev, __func__,
1da177e4
LT		 744 retval, transfer_buffer);
745
d60d4396 746 kfree(transfer_buffer);
1da177e4
LT		 747 return 0;
748}
749
750
d60d4396
AC		 751static int visor_probe(struct usb_serial *serial,
752 const struct usb_device_id *id)
1da177e4
LT		 753{
754 int retval = 0;
d60d4396
AC		 755 int (*startup)(struct usb_serial *serial,
756 const struct usb_device_id *id);
1da177e4 757
441b62c1 758 dbg("%s", __func__);
1da177e4
LT		 759
760 if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
194343d9 761 dev_err(&serial->dev->dev, "active config #%d != 1 ??\n",
1da177e4
LT		 762 serial->dev->actconfig->desc.bConfigurationValue);
763 return -ENODEV;
764 }
765
766 if (id->driver_info) {
767 startup = (void *)id->driver_info;
768 retval = startup(serial, id);
769 }
770
771 return retval;
772}
773
d60d4396 774static int visor_calc_num_ports(struct usb_serial *serial)
1da177e4
LT		 775{
776 int num_ports = (int)(long)(usb_get_serial_data(serial));
777
778 if (num_ports)
779 usb_set_serial_data(serial, NULL);
780
781 return num_ports;
782}
783
784static int generic_startup(struct usb_serial *serial)
785{
bd97c4f0 786 struct usb_serial_port **ports = serial->port;
1da177e4
LT		 787 struct visor_private *priv;
788 int i;
789
790 for (i = 0; i < serial->num_ports; ++i) {
d60d4396 791 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
bd97c4f0
PZ		 792 if (!priv) {
793 while (i-- != 0) {
794 priv = usb_get_serial_port_data(ports[i]);
795 usb_set_serial_port_data(ports[i], NULL);
796 kfree(priv);
797 }
1da177e4 798 return -ENOMEM;
bd97c4f0 799 }
1da177e4 800 spin_lock_init(&priv->lock);
bd97c4f0 801 usb_set_serial_port_data(ports[i], priv);
1da177e4
LT		 802 }
803 return 0;
804}
805
d60d4396 806static int clie_3_5_startup(struct usb_serial *serial)
1da177e4
LT		 807{
808 struct device *dev = &serial->dev->dev;
809 int result;
810 u8 data;
811
441b62c1 812 dbg("%s", __func__);
1da177e4
LT		 813
814 /*
815 * Note that PEG-300 series devices expect the following two calls.
816 */
817
818 /* get the config number */
d60d4396 819 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
1da177e4
LT		 820 USB_REQ_GET_CONFIGURATION, USB_DIR_IN,
821 0, 0, &data, 1, 3000);
822 if (result < 0) {
d60d4396
AC		 823 dev_err(dev, "%s: get config number failed: %d\n",
824 __func__, result);
1da177e4
LT		 825 return result;
826 }
827 if (result != 1) {
d60d4396
AC		 828 dev_err(dev, "%s: get config number bad return length: %d\n",
829 __func__, result);
1da177e4
LT		 830 return -EIO;
831 }
832
833 /* get the interface number */
d60d4396
AC		 834 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
835 USB_REQ_GET_INTERFACE,
1da177e4
LT		 836 USB_DIR_IN | USB_RECIP_INTERFACE,
837 0, 0, &data, 1, 3000);
838 if (result < 0) {
d60d4396
AC		 839 dev_err(dev, "%s: get interface number failed: %d\n",
840 __func__, result);
1da177e4
LT		 841 return result;
842 }
843 if (result != 1) {
d60d4396
AC		 844 dev_err(dev,
845 "%s: get interface number bad return length: %d\n",
846 __func__, result);
1da177e4
LT		 847 return -EIO;
848 }
849
850 return generic_startup(serial);
851}
d60d4396
AC		 852
853static int treo_attach(struct usb_serial *serial)
1da177e4
LT		 854{
855 struct usb_serial_port *swap_port;
856
857 /* Only do this endpoint hack for the Handspring devices with
858 * interrupt in endpoints, which for now are the Treo devices. */
d60d4396
AC		 859 if (!((le16_to_cpu(serial->dev->descriptor.idVendor)
860 == HANDSPRING_VENDOR_ID) ||
861 (le16_to_cpu(serial->dev->descriptor.idVendor)
862 == KYOCERA_VENDOR_ID)) ||
863 (serial->num_interrupt_in == 0))
1da177e4
LT		 864 goto generic_startup;
865
441b62c1 866 dbg("%s", __func__);
1da177e4
LT		 867
868 /*
d60d4396
AC		 869 * It appears that Treos and Kyoceras want to use the
870 * 1st bulk in endpoint to communicate with the 2nd bulk out endpoint,
871 * so let's swap the 1st and 2nd bulk in and interrupt endpoints.
872 * Note that swapping the bulk out endpoints would break lots of
1da177e4
LT		 873 * apps that want to communicate on the second port.
874 */
875#define COPY_PORT(dest, src) \
d60d4396
AC		 876 do { \
877 dest->read_urb = src->read_urb; \
878 dest->bulk_in_endpointAddress = src->bulk_in_endpointAddress;\
879 dest->bulk_in_buffer = src->bulk_in_buffer; \
880 dest->interrupt_in_urb = src->interrupt_in_urb; \
881 dest->interrupt_in_endpointAddress = \
882 src->interrupt_in_endpointAddress;\
883 dest->interrupt_in_buffer = src->interrupt_in_buffer; \
884 } while (0);
1da177e4
LT		 885
886 swap_port = kmalloc(sizeof(*swap_port), GFP_KERNEL);
887 if (!swap_port)
888 return -ENOMEM;
889 COPY_PORT(swap_port, serial->port[0]);
890 COPY_PORT(serial->port[0], serial->port[1]);
891 COPY_PORT(serial->port[1], swap_port);
892 kfree(swap_port);
893
894generic_startup:
895 return generic_startup(serial);
896}
897
d60d4396 898static int clie_5_attach(struct usb_serial *serial)
1da177e4 899{
441b62c1 900 dbg("%s", __func__);
1da177e4 901
d60d4396
AC		 902 /* TH55 registers 2 ports.
903 Communication in from the UX50/TH55 uses bulk_in_endpointAddress
904 from port 0. Communication out to the UX50/TH55 uses
905 bulk_out_endpointAddress from port 1
906
1da177e4
LT		 907 Lets do a quick and dirty mapping
908 */
d60d4396 909
1da177e4
LT		 910 /* some sanity check */
911 if (serial->num_ports < 2)
912 return -1;
d60d4396 913
1da177e4 914 /* port 0 now uses the modified endpoint Address */
d60d4396
AC		 915 serial->port[0]->bulk_out_endpointAddress =
916 serial->port[1]->bulk_out_endpointAddress;
1da177e4
LT		 917
918 return generic_startup(serial);
919}
920
d60d4396 921static void visor_shutdown(struct usb_serial *serial)
1da177e4 922{
bd97c4f0
PZ		 923 struct visor_private *priv;
924 int i;
925
441b62c1 926 dbg("%s", __func__);
bd97c4f0
PZ		 927
928 for (i = 0; i < serial->num_ports; i++) {
929 priv = usb_get_serial_port_data(serial->port[i]);
930 if (priv) {
931 usb_set_serial_port_data(serial->port[i], NULL);
932 kfree(priv);
933 }
934 }
1da177e4
LT		 935}
936
d60d4396 937static int __init visor_init(void)
1da177e4
LT		 938{
939 int i, retval;
940 /* Only if parameters were passed to us */
d60d4396
AC		 941 if (vendor > 0 && product > 0) {
942 struct usb_device_id usb_dev_temp[] = {
943 {
944 USB_DEVICE(vendor, product),
945 .driver_info =
946 (kernel_ulong_t) &palm_os_4_probe
947 }
948 };
1da177e4
LT		 949
950 /* Find the last entry in id_table */
d60d4396
AC		 951 for (i = 0;; i++) {
952 if (id_table[i].idVendor == 0) {
1da177e4
LT		 953 id_table[i] = usb_dev_temp[0];
954 break;
955 }
956 }
957 /* Find the last entry in id_table_combined */
d60d4396
AC		 958 for (i = 0;; i++) {
959 if (id_table_combined[i].idVendor == 0) {
1da177e4
LT		 960 id_table_combined[i] = usb_dev_temp[0];
961 break;
962 }
963 }
c197a8db
GKH		 964 printk(KERN_INFO KBUILD_MODNAME
965 ": Untested USB device specified at time of module insertion\n");
966 printk(KERN_INFO KBUILD_MODNAME
967 ": Warning: This is not guaranteed to work\n");
968 printk(KERN_INFO KBUILD_MODNAME
969 ": Using a newer kernel is preferred to this method\n");
970 printk(KERN_INFO KBUILD_MODNAME
971 ": Adding Palm OS protocol 4.x support for unknown device: 0x%x/0x%x\n",
1da177e4
LT		 972 vendor, product);
973 }
974 retval = usb_serial_register(&handspring_device);
975 if (retval)
976 goto failed_handspring_register;
977 retval = usb_serial_register(&clie_3_5_device);
978 if (retval)
979 goto failed_clie_3_5_register;
980 retval = usb_serial_register(&clie_5_device);
981 if (retval)
982 goto failed_clie_5_register;
983 retval = usb_register(&visor_driver);
d60d4396 984 if (retval)
1da177e4 985 goto failed_usb_register;
c197a8db 986 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n");
1da177e4
LT		 987
988 return 0;
989failed_usb_register:
990 usb_serial_deregister(&clie_5_device);
991failed_clie_5_register:
992 usb_serial_deregister(&clie_3_5_device);
993failed_clie_3_5_register:
994 usb_serial_deregister(&handspring_device);
995failed_handspring_register:
996 return retval;
997}
998
999
1000static void __exit visor_exit (void)
1001{
d60d4396
AC		 1002 usb_deregister(&visor_driver);
1003 usb_serial_deregister(&handspring_device);
1004 usb_serial_deregister(&clie_3_5_device);
1005 usb_serial_deregister(&clie_5_device);
1da177e4
LT		 1006}
1007
1008
1009module_init(visor_init);
1010module_exit(visor_exit);
1011
d60d4396
AC		 1012MODULE_AUTHOR(DRIVER_AUTHOR);
1013MODULE_DESCRIPTION(DRIVER_DESC);
1da177e4
LT		 1014MODULE_LICENSE("GPL");
1015
1016module_param(debug, bool, S_IRUGO | S_IWUSR);
1017MODULE_PARM_DESC(debug, "Debug enabled or not");
1018module_param(stats, bool, S_IRUGO | S_IWUSR);
1019MODULE_PARM_DESC(stats, "Enables statistics or not");
1020
1021module_param(vendor, ushort, 0);
1022MODULE_PARM_DESC(vendor, "User specified vendor ID");
1023module_param(product, ushort, 0);
1024MODULE_PARM_DESC(product, "User specified product ID");
1025
kernel source for telekom puls (alcatel/mediatek)