xref: /openbmc/linux/drivers/usb/serial/visor.c (revision 8571e645)
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  *
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.
11  *
12  * See Documentation/usb/usb-serial.txt for more information on using this
13  * driver
14  *
15  */
16 
17 #include <linux/kernel.h>
18 #include <linux/errno.h>
19 #include <linux/slab.h>
20 #include <linux/tty.h>
21 #include <linux/tty_driver.h>
22 #include <linux/tty_flip.h>
23 #include <linux/module.h>
24 #include <linux/moduleparam.h>
25 #include <linux/spinlock.h>
26 #include <linux/uaccess.h>
27 #include <linux/usb.h>
28 #include <linux/usb/serial.h>
29 #include <linux/usb/cdc.h>
30 #include "visor.h"
31 
32 /*
33  * Version Information
34  */
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 */
39 static int  visor_open(struct tty_struct *tty, struct usb_serial_port *port);
40 static void visor_close(struct usb_serial_port *port);
41 static int  visor_probe(struct usb_serial *serial,
42 					const struct usb_device_id *id);
43 static int  visor_calc_num_ports(struct usb_serial *serial);
44 static void visor_read_int_callback(struct urb *urb);
45 static int  clie_3_5_startup(struct usb_serial *serial);
46 static int  treo_attach(struct usb_serial *serial);
47 static int clie_5_attach(struct usb_serial *serial);
48 static int palm_os_3_probe(struct usb_serial *serial,
49 					const struct usb_device_id *id);
50 static int palm_os_4_probe(struct usb_serial *serial,
51 					const struct usb_device_id *id);
52 
53 static const struct usb_device_id id_table[] = {
54 	{ USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID),
55 		.driver_info = (kernel_ulong_t)&palm_os_3_probe },
56 	{ USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID),
57 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
58 	{ USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID),
59 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
60 	{ USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID),
61 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
62 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID),
63 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
64 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID),
65 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
66 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID),
67 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
68 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID),
69 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
70 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID),
71 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
72 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID),
73 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
74 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID),
75 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
76 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID),
77 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
78 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650),
79 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
80 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID),
81 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
82 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID),
83 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
84 	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID),
85 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
86 	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID),
87 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
88 	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID),
89 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
90 	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID),
91 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
92 	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID),
93 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
94 	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID),
95 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
96 	{ USB_DEVICE(ACER_VENDOR_ID, ACER_S10_ID),
97 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
98 	{ USB_DEVICE_INTERFACE_CLASS(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID, 0xff),
99 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
100 	{ USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID),
101 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
102 	{ USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID),
103 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
104 	{ USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID),
105 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
106 	{ USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID),
107 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
108 	{ USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID),
109 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
110 	{ USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID),
111 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
112 	{ }					/* Terminating entry */
113 };
114 
115 static const struct usb_device_id clie_id_5_table[] = {
116 	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID),
117 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
118 	{ }					/* Terminating entry */
119 };
120 
121 static const struct usb_device_id clie_id_3_5_table[] = {
122 	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
123 	{ }					/* Terminating entry */
124 };
125 
126 static const struct usb_device_id id_table_combined[] = {
127 	{ USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID) },
128 	{ USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID) },
129 	{ USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID) },
130 	{ USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID) },
131 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID) },
132 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID) },
133 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID) },
134 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID) },
135 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID) },
136 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID) },
137 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID) },
138 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID) },
139 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650) },
140 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID) },
141 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID) },
142 	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
143 	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID) },
144 	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID) },
145 	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID) },
146 	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID) },
147 	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID) },
148 	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID) },
149 	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID) },
150 	{ USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID) },
151 	{ USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID) },
152 	{ USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID) },
153 	{ USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID) },
154 	{ USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID) },
155 	{ USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID) },
156 	{ USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID) },
157 	{ }					/* Terminating entry */
158 };
159 
160 MODULE_DEVICE_TABLE(usb, id_table_combined);
161 
162 /* All of the device info needed for the Handspring Visor,
163    and Palm 4.0 devices */
164 static struct usb_serial_driver handspring_device = {
165 	.driver = {
166 		.owner =	THIS_MODULE,
167 		.name =		"visor",
168 	},
169 	.description =		"Handspring Visor / Palm OS",
170 	.id_table =		id_table,
171 	.num_ports =		2,
172 	.bulk_out_size =	256,
173 	.open =			visor_open,
174 	.close =		visor_close,
175 	.throttle =		usb_serial_generic_throttle,
176 	.unthrottle =		usb_serial_generic_unthrottle,
177 	.attach =		treo_attach,
178 	.probe =		visor_probe,
179 	.calc_num_ports =	visor_calc_num_ports,
180 	.read_int_callback =	visor_read_int_callback,
181 };
182 
183 /* All of the device info needed for the Clie UX50, TH55 Palm 5.0 devices */
184 static struct usb_serial_driver clie_5_device = {
185 	.driver = {
186 		.owner =	THIS_MODULE,
187 		.name =		"clie_5",
188 	},
189 	.description =		"Sony Clie 5.0",
190 	.id_table =		clie_id_5_table,
191 	.num_ports =		2,
192 	.bulk_out_size =	256,
193 	.open =			visor_open,
194 	.close =		visor_close,
195 	.throttle =		usb_serial_generic_throttle,
196 	.unthrottle =		usb_serial_generic_unthrottle,
197 	.attach =		clie_5_attach,
198 	.probe =		visor_probe,
199 	.calc_num_ports =	visor_calc_num_ports,
200 	.read_int_callback =	visor_read_int_callback,
201 };
202 
203 /* device info for the Sony Clie OS version 3.5 */
204 static struct usb_serial_driver clie_3_5_device = {
205 	.driver = {
206 		.owner =	THIS_MODULE,
207 		.name =		"clie_3.5",
208 	},
209 	.description =		"Sony Clie 3.5",
210 	.id_table =		clie_id_3_5_table,
211 	.num_ports =		1,
212 	.bulk_out_size =	256,
213 	.open =			visor_open,
214 	.close =		visor_close,
215 	.throttle =		usb_serial_generic_throttle,
216 	.unthrottle =		usb_serial_generic_unthrottle,
217 	.attach =		clie_3_5_startup,
218 };
219 
220 static struct usb_serial_driver * const serial_drivers[] = {
221 	&handspring_device, &clie_5_device, &clie_3_5_device, NULL
222 };
223 
224 /******************************************************************************
225  * Handspring Visor specific driver functions
226  ******************************************************************************/
227 static int visor_open(struct tty_struct *tty, struct usb_serial_port *port)
228 {
229 	int result = 0;
230 
231 	if (!port->read_urb) {
232 		/* this is needed for some brain dead Sony devices */
233 		dev_err(&port->dev, "Device lied about number of ports, please use a lower one.\n");
234 		return -ENODEV;
235 	}
236 
237 	/* Start reading from the device */
238 	result = usb_serial_generic_open(tty, port);
239 	if (result)
240 		goto exit;
241 
242 	if (port->interrupt_in_urb) {
243 		dev_dbg(&port->dev, "adding interrupt input for treo\n");
244 		result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
245 		if (result)
246 			dev_err(&port->dev,
247 			    "%s - failed submitting interrupt urb, error %d\n",
248 							__func__, result);
249 	}
250 exit:
251 	return result;
252 }
253 
254 
255 static void visor_close(struct usb_serial_port *port)
256 {
257 	unsigned char *transfer_buffer;
258 
259 	usb_serial_generic_close(port);
260 	usb_kill_urb(port->interrupt_in_urb);
261 
262 	transfer_buffer = kmalloc(0x12, GFP_KERNEL);
263 	if (!transfer_buffer)
264 		return;
265 	usb_control_msg(port->serial->dev,
266 					 usb_rcvctrlpipe(port->serial->dev, 0),
267 					 VISOR_CLOSE_NOTIFICATION, 0xc2,
268 					 0x0000, 0x0000,
269 					 transfer_buffer, 0x12, 300);
270 	kfree(transfer_buffer);
271 }
272 
273 static void visor_read_int_callback(struct urb *urb)
274 {
275 	struct usb_serial_port *port = urb->context;
276 	int status = urb->status;
277 	int result;
278 
279 	switch (status) {
280 	case 0:
281 		/* success */
282 		break;
283 	case -ECONNRESET:
284 	case -ENOENT:
285 	case -ESHUTDOWN:
286 		/* this urb is terminated, clean up */
287 		dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n",
288 			__func__, status);
289 		return;
290 	default:
291 		dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n",
292 			__func__, status);
293 		goto exit;
294 	}
295 
296 	/*
297 	 * This information is still unknown what it can be used for.
298 	 * If anyone has an idea, please let the author know...
299 	 *
300 	 * Rumor has it this endpoint is used to notify when data
301 	 * is ready to be read from the bulk ones.
302 	 */
303 	usb_serial_debug_data(&port->dev, __func__, urb->actual_length,
304 			      urb->transfer_buffer);
305 
306 exit:
307 	result = usb_submit_urb(urb, GFP_ATOMIC);
308 	if (result)
309 		dev_err(&urb->dev->dev,
310 				"%s - Error %d submitting interrupt urb\n",
311 							__func__, result);
312 }
313 
314 static int palm_os_3_probe(struct usb_serial *serial,
315 						const struct usb_device_id *id)
316 {
317 	struct device *dev = &serial->dev->dev;
318 	struct visor_connection_info *connection_info;
319 	unsigned char *transfer_buffer;
320 	char *string;
321 	int retval = 0;
322 	int i;
323 	int num_ports = 0;
324 
325 	transfer_buffer = kmalloc(sizeof(*connection_info), GFP_KERNEL);
326 	if (!transfer_buffer)
327 		return -ENOMEM;
328 
329 	/* send a get connection info request */
330 	retval = usb_control_msg(serial->dev,
331 				  usb_rcvctrlpipe(serial->dev, 0),
332 				  VISOR_GET_CONNECTION_INFORMATION,
333 				  0xc2, 0x0000, 0x0000, transfer_buffer,
334 				  sizeof(*connection_info), 300);
335 	if (retval < 0) {
336 		dev_err(dev, "%s - error %d getting connection information\n",
337 			__func__, retval);
338 		goto exit;
339 	}
340 
341 	if (retval == sizeof(*connection_info)) {
342 			connection_info = (struct visor_connection_info *)
343 							transfer_buffer;
344 
345 		num_ports = le16_to_cpu(connection_info->num_ports);
346 		for (i = 0; i < num_ports; ++i) {
347 			switch (
348 			   connection_info->connections[i].port_function_id) {
349 			case VISOR_FUNCTION_GENERIC:
350 				string = "Generic";
351 				break;
352 			case VISOR_FUNCTION_DEBUGGER:
353 				string = "Debugger";
354 				break;
355 			case VISOR_FUNCTION_HOTSYNC:
356 				string = "HotSync";
357 				break;
358 			case VISOR_FUNCTION_CONSOLE:
359 				string = "Console";
360 				break;
361 			case VISOR_FUNCTION_REMOTE_FILE_SYS:
362 				string = "Remote File System";
363 				break;
364 			default:
365 				string = "unknown";
366 				break;
367 			}
368 			dev_info(dev, "%s: port %d, is for %s use\n",
369 				serial->type->description,
370 				connection_info->connections[i].port, string);
371 		}
372 	}
373 	/*
374 	* Handle devices that report invalid stuff here.
375 	*/
376 	if (num_ports == 0 || num_ports > 2) {
377 		dev_warn(dev, "%s: No valid connect info available\n",
378 			serial->type->description);
379 		num_ports = 2;
380 	}
381 
382 	dev_info(dev, "%s: Number of ports: %d\n", serial->type->description,
383 		num_ports);
384 
385 	/*
386 	 * save off our num_ports info so that we can use it in the
387 	 * calc_num_ports callback
388 	 */
389 	usb_set_serial_data(serial, (void *)(long)num_ports);
390 
391 	/* ask for the number of bytes available, but ignore the
392 	   response as it is broken */
393 	retval = usb_control_msg(serial->dev,
394 				  usb_rcvctrlpipe(serial->dev, 0),
395 				  VISOR_REQUEST_BYTES_AVAILABLE,
396 				  0xc2, 0x0000, 0x0005, transfer_buffer,
397 				  0x02, 300);
398 	if (retval < 0)
399 		dev_err(dev, "%s - error %d getting bytes available request\n",
400 			__func__, retval);
401 	retval = 0;
402 
403 exit:
404 	kfree(transfer_buffer);
405 
406 	return retval;
407 }
408 
409 static int palm_os_4_probe(struct usb_serial *serial,
410 						const struct usb_device_id *id)
411 {
412 	struct device *dev = &serial->dev->dev;
413 	struct palm_ext_connection_info *connection_info;
414 	unsigned char *transfer_buffer;
415 	int retval;
416 
417 	transfer_buffer =  kmalloc(sizeof(*connection_info), GFP_KERNEL);
418 	if (!transfer_buffer)
419 		return -ENOMEM;
420 
421 	retval = usb_control_msg(serial->dev,
422 				  usb_rcvctrlpipe(serial->dev, 0),
423 				  PALM_GET_EXT_CONNECTION_INFORMATION,
424 				  0xc2, 0x0000, 0x0000, transfer_buffer,
425 				  sizeof(*connection_info), 300);
426 	if (retval < 0)
427 		dev_err(dev, "%s - error %d getting connection info\n",
428 			__func__, retval);
429 	else
430 		usb_serial_debug_data(dev, __func__, retval, transfer_buffer);
431 
432 	kfree(transfer_buffer);
433 	return 0;
434 }
435 
436 
437 static int visor_probe(struct usb_serial *serial,
438 					const struct usb_device_id *id)
439 {
440 	int retval = 0;
441 	int (*startup)(struct usb_serial *serial,
442 					const struct usb_device_id *id);
443 
444 	/*
445 	 * some Samsung Android phones in modem mode have the same ID
446 	 * as SPH-I500, but they are ACM devices, so dont bind to them
447 	 */
448 	if (id->idVendor == SAMSUNG_VENDOR_ID &&
449 		id->idProduct == SAMSUNG_SPH_I500_ID &&
450 		serial->dev->descriptor.bDeviceClass == USB_CLASS_COMM &&
451 		serial->dev->descriptor.bDeviceSubClass ==
452 			USB_CDC_SUBCLASS_ACM)
453 		return -ENODEV;
454 
455 	if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
456 		dev_err(&serial->dev->dev, "active config #%d != 1 ??\n",
457 			serial->dev->actconfig->desc.bConfigurationValue);
458 		return -ENODEV;
459 	}
460 
461 	if (id->driver_info) {
462 		startup = (void *)id->driver_info;
463 		retval = startup(serial, id);
464 	}
465 
466 	return retval;
467 }
468 
469 static int visor_calc_num_ports(struct usb_serial *serial)
470 {
471 	int num_ports = (int)(long)(usb_get_serial_data(serial));
472 
473 	if (num_ports)
474 		usb_set_serial_data(serial, NULL);
475 
476 	return num_ports;
477 }
478 
479 static int clie_3_5_startup(struct usb_serial *serial)
480 {
481 	struct device *dev = &serial->dev->dev;
482 	int result;
483 	u8 *data;
484 
485 	data = kmalloc(1, GFP_KERNEL);
486 	if (!data)
487 		return -ENOMEM;
488 
489 	/*
490 	 * Note that PEG-300 series devices expect the following two calls.
491 	 */
492 
493 	/* get the config number */
494 	result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
495 				  USB_REQ_GET_CONFIGURATION, USB_DIR_IN,
496 				  0, 0, data, 1, 3000);
497 	if (result < 0) {
498 		dev_err(dev, "%s: get config number failed: %d\n",
499 							__func__, result);
500 		goto out;
501 	}
502 	if (result != 1) {
503 		dev_err(dev, "%s: get config number bad return length: %d\n",
504 							__func__, result);
505 		result = -EIO;
506 		goto out;
507 	}
508 
509 	/* get the interface number */
510 	result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
511 				  USB_REQ_GET_INTERFACE,
512 				  USB_DIR_IN | USB_RECIP_INTERFACE,
513 				  0, 0, data, 1, 3000);
514 	if (result < 0) {
515 		dev_err(dev, "%s: get interface number failed: %d\n",
516 							__func__, result);
517 		goto out;
518 	}
519 	if (result != 1) {
520 		dev_err(dev,
521 			"%s: get interface number bad return length: %d\n",
522 							__func__, result);
523 		result = -EIO;
524 		goto out;
525 	}
526 
527 	result = 0;
528 out:
529 	kfree(data);
530 
531 	return result;
532 }
533 
534 static int treo_attach(struct usb_serial *serial)
535 {
536 	struct usb_serial_port *swap_port;
537 
538 	/* Only do this endpoint hack for the Handspring devices with
539 	 * interrupt in endpoints, which for now are the Treo devices. */
540 	if (!((le16_to_cpu(serial->dev->descriptor.idVendor)
541 						== HANDSPRING_VENDOR_ID) ||
542 		(le16_to_cpu(serial->dev->descriptor.idVendor)
543 						== KYOCERA_VENDOR_ID)) ||
544 		(serial->num_interrupt_in == 0))
545 		return 0;
546 
547 	if (serial->num_bulk_in < 2 || serial->num_interrupt_in < 2) {
548 		dev_err(&serial->interface->dev, "missing endpoints\n");
549 		return -ENODEV;
550 	}
551 
552 	/*
553 	* It appears that Treos and Kyoceras want to use the
554 	* 1st bulk in endpoint to communicate with the 2nd bulk out endpoint,
555 	* so let's swap the 1st and 2nd bulk in and interrupt endpoints.
556 	* Note that swapping the bulk out endpoints would break lots of
557 	* apps that want to communicate on the second port.
558 	*/
559 #define COPY_PORT(dest, src)						\
560 	do { \
561 		int i;							\
562 									\
563 		for (i = 0; i < ARRAY_SIZE(src->read_urbs); ++i) {	\
564 			dest->read_urbs[i] = src->read_urbs[i];		\
565 			dest->read_urbs[i]->context = dest;		\
566 			dest->bulk_in_buffers[i] = src->bulk_in_buffers[i]; \
567 		}							\
568 		dest->read_urb = src->read_urb;				\
569 		dest->bulk_in_endpointAddress = src->bulk_in_endpointAddress;\
570 		dest->bulk_in_buffer = src->bulk_in_buffer;		\
571 		dest->bulk_in_size = src->bulk_in_size;			\
572 		dest->interrupt_in_urb = src->interrupt_in_urb;		\
573 		dest->interrupt_in_urb->context = dest;			\
574 		dest->interrupt_in_endpointAddress = \
575 					src->interrupt_in_endpointAddress;\
576 		dest->interrupt_in_buffer = src->interrupt_in_buffer;	\
577 	} while (0);
578 
579 	swap_port = kmalloc(sizeof(*swap_port), GFP_KERNEL);
580 	if (!swap_port)
581 		return -ENOMEM;
582 	COPY_PORT(swap_port, serial->port[0]);
583 	COPY_PORT(serial->port[0], serial->port[1]);
584 	COPY_PORT(serial->port[1], swap_port);
585 	kfree(swap_port);
586 
587 	return 0;
588 }
589 
590 static int clie_5_attach(struct usb_serial *serial)
591 {
592 	struct usb_serial_port *port;
593 	unsigned int pipe;
594 	int j;
595 
596 	/* TH55 registers 2 ports.
597 	   Communication in from the UX50/TH55 uses bulk_in_endpointAddress
598 	   from port 0. Communication out to the UX50/TH55 uses
599 	   bulk_out_endpointAddress from port 1
600 
601 	   Lets do a quick and dirty mapping
602 	 */
603 
604 	/* some sanity check */
605 	if (serial->num_bulk_out < 2) {
606 		dev_err(&serial->interface->dev, "missing bulk out endpoints\n");
607 		return -ENODEV;
608 	}
609 
610 	/* port 0 now uses the modified endpoint Address */
611 	port = serial->port[0];
612 	port->bulk_out_endpointAddress =
613 				serial->port[1]->bulk_out_endpointAddress;
614 
615 	pipe = usb_sndbulkpipe(serial->dev, port->bulk_out_endpointAddress);
616 	for (j = 0; j < ARRAY_SIZE(port->write_urbs); ++j)
617 		port->write_urbs[j]->pipe = pipe;
618 
619 	return 0;
620 }
621 
622 module_usb_serial_driver(serial_drivers, id_table_combined);
623 
624 MODULE_AUTHOR(DRIVER_AUTHOR);
625 MODULE_DESCRIPTION(DRIVER_DESC);
626 MODULE_LICENSE("GPL");
627