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1// SPDX-License-Identifier: GPL-2.0+
2/*
3 Keyspan USB to Serial Converter driver
4
5 (C) Copyright (C) 2000-2001 Hugh Blemings <hugh@blemings.org>
6 (C) Copyright (C) 2002 Greg Kroah-Hartman <greg@kroah.com>
7
8 See http://blemings.org/hugh/keyspan.html for more information.
9
10 Code in this driver inspired by and in a number of places taken
11 from Brian Warner's original Keyspan-PDA driver.
12
13 This driver has been put together with the support of Innosys, Inc.
14 and Keyspan, Inc the manufacturers of the Keyspan USB-serial products.
15 Thanks Guys :)
16
17 Thanks to Paulus for miscellaneous tidy ups, some largish chunks
18 of much nicer and/or completely new code and (perhaps most uniquely)
19 having the patience to sit down and explain why and where he'd changed
20 stuff.
21
22 Tip 'o the hat to IBM (and previously Linuxcare :) for supporting
23 staff in their work on open source projects.
24*/
25
26
27#include <linux/kernel.h>
28#include <linux/jiffies.h>
29#include <linux/errno.h>
30#include <linux/slab.h>
31#include <linux/tty.h>
32#include <linux/tty_driver.h>
33#include <linux/tty_flip.h>
34#include <linux/module.h>
35#include <linux/spinlock.h>
36#include <linux/uaccess.h>
37#include <linux/usb.h>
38#include <linux/usb/serial.h>
39#include <linux/usb/ezusb.h>
40
41#define DRIVER_AUTHOR "Hugh Blemings <hugh@misc.nu"
42#define DRIVER_DESC "Keyspan USB to Serial Converter Driver"
43
44static void keyspan_send_setup(struct usb_serial_port *port, int reset_port);
45
46static int keyspan_usa19_calc_baud(struct usb_serial_port *port,
47 u32 baud_rate, u32 baudclk,
48 u8 *rate_hi, u8 *rate_low,
49 u8 *prescaler, int portnum);
50static int keyspan_usa19w_calc_baud(struct usb_serial_port *port,
51 u32 baud_rate, u32 baudclk,
52 u8 *rate_hi, u8 *rate_low,
53 u8 *prescaler, int portnum);
54static int keyspan_usa28_calc_baud(struct usb_serial_port *port,
55 u32 baud_rate, u32 baudclk,
56 u8 *rate_hi, u8 *rate_low,
57 u8 *prescaler, int portnum);
58static int keyspan_usa19hs_calc_baud(struct usb_serial_port *port,
59 u32 baud_rate, u32 baudclk,
60 u8 *rate_hi, u8 *rate_low,
61 u8 *prescaler, int portnum);
62
63static int keyspan_usa28_send_setup(struct usb_serial *serial,
64 struct usb_serial_port *port,
65 int reset_port);
66static int keyspan_usa26_send_setup(struct usb_serial *serial,
67 struct usb_serial_port *port,
68 int reset_port);
69static int keyspan_usa49_send_setup(struct usb_serial *serial,
70 struct usb_serial_port *port,
71 int reset_port);
72static int keyspan_usa90_send_setup(struct usb_serial *serial,
73 struct usb_serial_port *port,
74 int reset_port);
75static int keyspan_usa67_send_setup(struct usb_serial *serial,
76 struct usb_serial_port *port,
77 int reset_port);
78
79/* Values used for baud rate calculation - device specific */
80#define KEYSPAN_INVALID_BAUD_RATE (-1)
81#define KEYSPAN_BAUD_RATE_OK (0)
82#define KEYSPAN_USA18X_BAUDCLK (12000000L) /* a guess */
83#define KEYSPAN_USA19_BAUDCLK (12000000L)
84#define KEYSPAN_USA19W_BAUDCLK (24000000L)
85#define KEYSPAN_USA19HS_BAUDCLK (14769231L)
86#define KEYSPAN_USA28_BAUDCLK (1843200L)
87#define KEYSPAN_USA28X_BAUDCLK (12000000L)
88#define KEYSPAN_USA49W_BAUDCLK (48000000L)
89
90/* Some constants used to characterise each device. */
91#define KEYSPAN_MAX_NUM_PORTS (4)
92#define KEYSPAN_MAX_FLIPS (2)
93
94/*
95 * Device info for the Keyspan serial converter, used by the overall
96 * usb-serial probe function.
97 */
98#define KEYSPAN_VENDOR_ID (0x06cd)
99
100/* Product IDs for the products supported, pre-renumeration */
101#define keyspan_usa18x_pre_product_id 0x0105
102#define keyspan_usa19_pre_product_id 0x0103
103#define keyspan_usa19qi_pre_product_id 0x010b
104#define keyspan_mpr_pre_product_id 0x011b
105#define keyspan_usa19qw_pre_product_id 0x0118
106#define keyspan_usa19w_pre_product_id 0x0106
107#define keyspan_usa28_pre_product_id 0x0101
108#define keyspan_usa28x_pre_product_id 0x0102
109#define keyspan_usa28xa_pre_product_id 0x0114
110#define keyspan_usa28xb_pre_product_id 0x0113
111#define keyspan_usa49w_pre_product_id 0x0109
112#define keyspan_usa49wlc_pre_product_id 0x011a
113
114/*
115 * Product IDs post-renumeration. Note that the 28x and 28xb have the same
116 * id's post-renumeration but behave identically so it's not an issue. As
117 * such, the 28xb is not listed in any of the device tables.
118 */
119#define keyspan_usa18x_product_id 0x0112
120#define keyspan_usa19_product_id 0x0107
121#define keyspan_usa19qi_product_id 0x010c
122#define keyspan_usa19hs_product_id 0x0121
123#define keyspan_mpr_product_id 0x011c
124#define keyspan_usa19qw_product_id 0x0119
125#define keyspan_usa19w_product_id 0x0108
126#define keyspan_usa28_product_id 0x010f
127#define keyspan_usa28x_product_id 0x0110
128#define keyspan_usa28xa_product_id 0x0115
129#define keyspan_usa28xb_product_id 0x0110
130#define keyspan_usa28xg_product_id 0x0135
131#define keyspan_usa49w_product_id 0x010a
132#define keyspan_usa49wlc_product_id 0x012a
133#define keyspan_usa49wg_product_id 0x0131
134
135struct keyspan_device_details {
136 /* product ID value */
137 int product_id;
138
139 enum {msg_usa26, msg_usa28, msg_usa49, msg_usa90, msg_usa67} msg_format;
140
141 /* Number of physical ports */
142 int num_ports;
143
144 /* 1 if endpoint flipping used on input, 0 if not */
145 int indat_endp_flip;
146
147 /* 1 if endpoint flipping used on output, 0 if not */
148 int outdat_endp_flip;
149
150 /*
151 * Table mapping input data endpoint IDs to physical port
152 * number and flip if used
153 */
154 int indat_endpoints[KEYSPAN_MAX_NUM_PORTS];
155
156 /* Same for output endpoints */
157 int outdat_endpoints[KEYSPAN_MAX_NUM_PORTS];
158
159 /* Input acknowledge endpoints */
160 int inack_endpoints[KEYSPAN_MAX_NUM_PORTS];
161
162 /* Output control endpoints */
163 int outcont_endpoints[KEYSPAN_MAX_NUM_PORTS];
164
165 /* Endpoint used for input status */
166 int instat_endpoint;
167
168 /* Endpoint used for input data 49WG only */
169 int indat_endpoint;
170
171 /* Endpoint used for global control functions */
172 int glocont_endpoint;
173
174 int (*calculate_baud_rate)(struct usb_serial_port *port,
175 u32 baud_rate, u32 baudclk,
176 u8 *rate_hi, u8 *rate_low, u8 *prescaler,
177 int portnum);
178 u32 baudclk;
179};
180
181/*
182 * Now for each device type we setup the device detail structure with the
183 * appropriate information (provided in Keyspan's documentation)
184 */
185
186static const struct keyspan_device_details usa18x_device_details = {
187 .product_id = keyspan_usa18x_product_id,
188 .msg_format = msg_usa26,
189 .num_ports = 1,
190 .indat_endp_flip = 0,
191 .outdat_endp_flip = 1,
192 .indat_endpoints = {0x81},
193 .outdat_endpoints = {0x01},
194 .inack_endpoints = {0x85},
195 .outcont_endpoints = {0x05},
196 .instat_endpoint = 0x87,
197 .indat_endpoint = -1,
198 .glocont_endpoint = 0x07,
199 .calculate_baud_rate = keyspan_usa19w_calc_baud,
200 .baudclk = KEYSPAN_USA18X_BAUDCLK,
201};
202
203static const struct keyspan_device_details usa19_device_details = {
204 .product_id = keyspan_usa19_product_id,
205 .msg_format = msg_usa28,
206 .num_ports = 1,
207 .indat_endp_flip = 1,
208 .outdat_endp_flip = 1,
209 .indat_endpoints = {0x81},
210 .outdat_endpoints = {0x01},
211 .inack_endpoints = {0x83},
212 .outcont_endpoints = {0x03},
213 .instat_endpoint = 0x84,
214 .indat_endpoint = -1,
215 .glocont_endpoint = -1,
216 .calculate_baud_rate = keyspan_usa19_calc_baud,
217 .baudclk = KEYSPAN_USA19_BAUDCLK,
218};
219
220static const struct keyspan_device_details usa19qi_device_details = {
221 .product_id = keyspan_usa19qi_product_id,
222 .msg_format = msg_usa28,
223 .num_ports = 1,
224 .indat_endp_flip = 1,
225 .outdat_endp_flip = 1,
226 .indat_endpoints = {0x81},
227 .outdat_endpoints = {0x01},
228 .inack_endpoints = {0x83},
229 .outcont_endpoints = {0x03},
230 .instat_endpoint = 0x84,
231 .indat_endpoint = -1,
232 .glocont_endpoint = -1,
233 .calculate_baud_rate = keyspan_usa28_calc_baud,
234 .baudclk = KEYSPAN_USA19_BAUDCLK,
235};
236
237static const struct keyspan_device_details mpr_device_details = {
238 .product_id = keyspan_mpr_product_id,
239 .msg_format = msg_usa28,
240 .num_ports = 1,
241 .indat_endp_flip = 1,
242 .outdat_endp_flip = 1,
243 .indat_endpoints = {0x81},
244 .outdat_endpoints = {0x01},
245 .inack_endpoints = {0x83},
246 .outcont_endpoints = {0x03},
247 .instat_endpoint = 0x84,
248 .indat_endpoint = -1,
249 .glocont_endpoint = -1,
250 .calculate_baud_rate = keyspan_usa28_calc_baud,
251 .baudclk = KEYSPAN_USA19_BAUDCLK,
252};
253
254static const struct keyspan_device_details usa19qw_device_details = {
255 .product_id = keyspan_usa19qw_product_id,
256 .msg_format = msg_usa26,
257 .num_ports = 1,
258 .indat_endp_flip = 0,
259 .outdat_endp_flip = 1,
260 .indat_endpoints = {0x81},
261 .outdat_endpoints = {0x01},
262 .inack_endpoints = {0x85},
263 .outcont_endpoints = {0x05},
264 .instat_endpoint = 0x87,
265 .indat_endpoint = -1,
266 .glocont_endpoint = 0x07,
267 .calculate_baud_rate = keyspan_usa19w_calc_baud,
268 .baudclk = KEYSPAN_USA19W_BAUDCLK,
269};
270
271static const struct keyspan_device_details usa19w_device_details = {
272 .product_id = keyspan_usa19w_product_id,
273 .msg_format = msg_usa26,
274 .num_ports = 1,
275 .indat_endp_flip = 0,
276 .outdat_endp_flip = 1,
277 .indat_endpoints = {0x81},
278 .outdat_endpoints = {0x01},
279 .inack_endpoints = {0x85},
280 .outcont_endpoints = {0x05},
281 .instat_endpoint = 0x87,
282 .indat_endpoint = -1,
283 .glocont_endpoint = 0x07,
284 .calculate_baud_rate = keyspan_usa19w_calc_baud,
285 .baudclk = KEYSPAN_USA19W_BAUDCLK,
286};
287
288static const struct keyspan_device_details usa19hs_device_details = {
289 .product_id = keyspan_usa19hs_product_id,
290 .msg_format = msg_usa90,
291 .num_ports = 1,
292 .indat_endp_flip = 0,
293 .outdat_endp_flip = 0,
294 .indat_endpoints = {0x81},
295 .outdat_endpoints = {0x01},
296 .inack_endpoints = {-1},
297 .outcont_endpoints = {0x02},
298 .instat_endpoint = 0x82,
299 .indat_endpoint = -1,
300 .glocont_endpoint = -1,
301 .calculate_baud_rate = keyspan_usa19hs_calc_baud,
302 .baudclk = KEYSPAN_USA19HS_BAUDCLK,
303};
304
305static const struct keyspan_device_details usa28_device_details = {
306 .product_id = keyspan_usa28_product_id,
307 .msg_format = msg_usa28,
308 .num_ports = 2,
309 .indat_endp_flip = 1,
310 .outdat_endp_flip = 1,
311 .indat_endpoints = {0x81, 0x83},
312 .outdat_endpoints = {0x01, 0x03},
313 .inack_endpoints = {0x85, 0x86},
314 .outcont_endpoints = {0x05, 0x06},
315 .instat_endpoint = 0x87,
316 .indat_endpoint = -1,
317 .glocont_endpoint = 0x07,
318 .calculate_baud_rate = keyspan_usa28_calc_baud,
319 .baudclk = KEYSPAN_USA28_BAUDCLK,
320};
321
322static const struct keyspan_device_details usa28x_device_details = {
323 .product_id = keyspan_usa28x_product_id,
324 .msg_format = msg_usa26,
325 .num_ports = 2,
326 .indat_endp_flip = 0,
327 .outdat_endp_flip = 1,
328 .indat_endpoints = {0x81, 0x83},
329 .outdat_endpoints = {0x01, 0x03},
330 .inack_endpoints = {0x85, 0x86},
331 .outcont_endpoints = {0x05, 0x06},
332 .instat_endpoint = 0x87,
333 .indat_endpoint = -1,
334 .glocont_endpoint = 0x07,
335 .calculate_baud_rate = keyspan_usa19w_calc_baud,
336 .baudclk = KEYSPAN_USA28X_BAUDCLK,
337};
338
339static const struct keyspan_device_details usa28xa_device_details = {
340 .product_id = keyspan_usa28xa_product_id,
341 .msg_format = msg_usa26,
342 .num_ports = 2,
343 .indat_endp_flip = 0,
344 .outdat_endp_flip = 1,
345 .indat_endpoints = {0x81, 0x83},
346 .outdat_endpoints = {0x01, 0x03},
347 .inack_endpoints = {0x85, 0x86},
348 .outcont_endpoints = {0x05, 0x06},
349 .instat_endpoint = 0x87,
350 .indat_endpoint = -1,
351 .glocont_endpoint = 0x07,
352 .calculate_baud_rate = keyspan_usa19w_calc_baud,
353 .baudclk = KEYSPAN_USA28X_BAUDCLK,
354};
355
356static const struct keyspan_device_details usa28xg_device_details = {
357 .product_id = keyspan_usa28xg_product_id,
358 .msg_format = msg_usa67,
359 .num_ports = 2,
360 .indat_endp_flip = 0,
361 .outdat_endp_flip = 0,
362 .indat_endpoints = {0x84, 0x88},
363 .outdat_endpoints = {0x02, 0x06},
364 .inack_endpoints = {-1, -1},
365 .outcont_endpoints = {-1, -1},
366 .instat_endpoint = 0x81,
367 .indat_endpoint = -1,
368 .glocont_endpoint = 0x01,
369 .calculate_baud_rate = keyspan_usa19w_calc_baud,
370 .baudclk = KEYSPAN_USA28X_BAUDCLK,
371};
372/*
373 * We don't need a separate entry for the usa28xb as it appears as a 28x
374 * anyway.
375 */
376
377static const struct keyspan_device_details usa49w_device_details = {
378 .product_id = keyspan_usa49w_product_id,
379 .msg_format = msg_usa49,
380 .num_ports = 4,
381 .indat_endp_flip = 0,
382 .outdat_endp_flip = 0,
383 .indat_endpoints = {0x81, 0x82, 0x83, 0x84},
384 .outdat_endpoints = {0x01, 0x02, 0x03, 0x04},
385 .inack_endpoints = {-1, -1, -1, -1},
386 .outcont_endpoints = {-1, -1, -1, -1},
387 .instat_endpoint = 0x87,
388 .indat_endpoint = -1,
389 .glocont_endpoint = 0x07,
390 .calculate_baud_rate = keyspan_usa19w_calc_baud,
391 .baudclk = KEYSPAN_USA49W_BAUDCLK,
392};
393
394static const struct keyspan_device_details usa49wlc_device_details = {
395 .product_id = keyspan_usa49wlc_product_id,
396 .msg_format = msg_usa49,
397 .num_ports = 4,
398 .indat_endp_flip = 0,
399 .outdat_endp_flip = 0,
400 .indat_endpoints = {0x81, 0x82, 0x83, 0x84},
401 .outdat_endpoints = {0x01, 0x02, 0x03, 0x04},
402 .inack_endpoints = {-1, -1, -1, -1},
403 .outcont_endpoints = {-1, -1, -1, -1},
404 .instat_endpoint = 0x87,
405 .indat_endpoint = -1,
406 .glocont_endpoint = 0x07,
407 .calculate_baud_rate = keyspan_usa19w_calc_baud,
408 .baudclk = KEYSPAN_USA19W_BAUDCLK,
409};
410
411static const struct keyspan_device_details usa49wg_device_details = {
412 .product_id = keyspan_usa49wg_product_id,
413 .msg_format = msg_usa49,
414 .num_ports = 4,
415 .indat_endp_flip = 0,
416 .outdat_endp_flip = 0,
417 .indat_endpoints = {-1, -1, -1, -1}, /* single 'global' data in EP */
418 .outdat_endpoints = {0x01, 0x02, 0x04, 0x06},
419 .inack_endpoints = {-1, -1, -1, -1},
420 .outcont_endpoints = {-1, -1, -1, -1},
421 .instat_endpoint = 0x81,
422 .indat_endpoint = 0x88,
423 .glocont_endpoint = 0x00, /* uses control EP */
424 .calculate_baud_rate = keyspan_usa19w_calc_baud,
425 .baudclk = KEYSPAN_USA19W_BAUDCLK,
426};
427
428static const struct keyspan_device_details *keyspan_devices[] = {
429 &usa18x_device_details,
430 &usa19_device_details,
431 &usa19qi_device_details,
432 &mpr_device_details,
433 &usa19qw_device_details,
434 &usa19w_device_details,
435 &usa19hs_device_details,
436 &usa28_device_details,
437 &usa28x_device_details,
438 &usa28xa_device_details,
439 &usa28xg_device_details,
440 /* 28xb not required as it renumerates as a 28x */
441 &usa49w_device_details,
442 &usa49wlc_device_details,
443 &usa49wg_device_details,
444 NULL,
445};
446
447static const struct usb_device_id keyspan_ids_combined[] = {
448 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa18x_pre_product_id) },
449 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19_pre_product_id) },
450 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19w_pre_product_id) },
451 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19qi_pre_product_id) },
452 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19qw_pre_product_id) },
453 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_mpr_pre_product_id) },
454 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28_pre_product_id) },
455 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28x_pre_product_id) },
456 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xa_pre_product_id) },
457 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xb_pre_product_id) },
458 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49w_pre_product_id) },
459 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49wlc_pre_product_id) },
460 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa18x_product_id) },
461 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19_product_id) },
462 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19w_product_id) },
463 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19qi_product_id) },
464 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19qw_product_id) },
465 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19hs_product_id) },
466 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_mpr_product_id) },
467 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28_product_id) },
468 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28x_product_id) },
469 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xa_product_id) },
470 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xg_product_id) },
471 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49w_product_id)},
472 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49wlc_product_id)},
473 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49wg_product_id)},
474 { } /* Terminating entry */
475};
476
477MODULE_DEVICE_TABLE(usb, keyspan_ids_combined);
478
479/* usb_device_id table for the pre-firmware download keyspan devices */
480static const struct usb_device_id keyspan_pre_ids[] = {
481 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa18x_pre_product_id) },
482 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19_pre_product_id) },
483 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19qi_pre_product_id) },
484 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19qw_pre_product_id) },
485 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19w_pre_product_id) },
486 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_mpr_pre_product_id) },
487 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28_pre_product_id) },
488 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28x_pre_product_id) },
489 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xa_pre_product_id) },
490 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xb_pre_product_id) },
491 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49w_pre_product_id) },
492 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49wlc_pre_product_id) },
493 { } /* Terminating entry */
494};
495
496static const struct usb_device_id keyspan_1port_ids[] = {
497 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa18x_product_id) },
498 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19_product_id) },
499 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19qi_product_id) },
500 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19qw_product_id) },
501 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19w_product_id) },
502 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19hs_product_id) },
503 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_mpr_product_id) },
504 { } /* Terminating entry */
505};
506
507static const struct usb_device_id keyspan_2port_ids[] = {
508 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28_product_id) },
509 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28x_product_id) },
510 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xa_product_id) },
511 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xg_product_id) },
512 { } /* Terminating entry */
513};
514
515static const struct usb_device_id keyspan_4port_ids[] = {
516 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49w_product_id) },
517 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49wlc_product_id)},
518 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49wg_product_id)},
519 { } /* Terminating entry */
520};
521
522#define INSTAT_BUFLEN 32
523#define GLOCONT_BUFLEN 64
524#define INDAT49W_BUFLEN 512
525#define IN_BUFLEN 64
526#define OUT_BUFLEN 64
527#define INACK_BUFLEN 1
528#define OUTCONT_BUFLEN 64
529
530 /* Per device and per port private data */
531struct keyspan_serial_private {
532 const struct keyspan_device_details *device_details;
533
534 struct urb *instat_urb;
535 char *instat_buf;
536
537 /* added to support 49wg, where data from all 4 ports comes in
538 on 1 EP and high-speed supported */
539 struct urb *indat_urb;
540 char *indat_buf;
541
542 /* XXX this one probably will need a lock */
543 struct urb *glocont_urb;
544 char *glocont_buf;
545 char *ctrl_buf; /* for EP0 control message */
546};
547
548struct keyspan_port_private {
549 /* Keep track of which input & output endpoints to use */
550 int in_flip;
551 int out_flip;
552
553 /* Keep duplicate of device details in each port
554 structure as well - simplifies some of the
555 callback functions etc. */
556 const struct keyspan_device_details *device_details;
557
558 /* Input endpoints and buffer for this port */
559 struct urb *in_urbs[2];
560 char *in_buffer[2];
561 /* Output endpoints and buffer for this port */
562 struct urb *out_urbs[2];
563 char *out_buffer[2];
564
565 /* Input ack endpoint */
566 struct urb *inack_urb;
567 char *inack_buffer;
568
569 /* Output control endpoint */
570 struct urb *outcont_urb;
571 char *outcont_buffer;
572
573 /* Settings for the port */
574 int baud;
575 int old_baud;
576 unsigned int cflag;
577 unsigned int old_cflag;
578 enum {flow_none, flow_cts, flow_xon} flow_control;
579 int rts_state; /* Handshaking pins (outputs) */
580 int dtr_state;
581 int cts_state; /* Handshaking pins (inputs) */
582 int dsr_state;
583 int dcd_state;
584 int ri_state;
585 int break_on;
586
587 unsigned long tx_start_time[2];
588 int resend_cont; /* need to resend control packet */
589};
590
591/* Include Keyspan message headers. All current Keyspan Adapters
592 make use of one of five message formats which are referred
593 to as USA-26, USA-28, USA-49, USA-90, USA-67 by Keyspan and
594 within this driver. */
595#include "keyspan_usa26msg.h"
596#include "keyspan_usa28msg.h"
597#include "keyspan_usa49msg.h"
598#include "keyspan_usa90msg.h"
599#include "keyspan_usa67msg.h"
600
601
602static int keyspan_break_ctl(struct tty_struct *tty, int break_state)
603{
604 struct usb_serial_port *port = tty->driver_data;
605 struct keyspan_port_private *p_priv;
606
607 p_priv = usb_get_serial_port_data(port);
608
609 if (break_state == -1)
610 p_priv->break_on = 1;
611 else
612 p_priv->break_on = 0;
613
614 /* FIXME: return errors */
615 keyspan_send_setup(port, 0);
616
617 return 0;
618}
619
620
621static void keyspan_set_termios(struct tty_struct *tty,
622 struct usb_serial_port *port,
623 const struct ktermios *old_termios)
624{
625 int baud_rate, device_port;
626 struct keyspan_port_private *p_priv;
627 const struct keyspan_device_details *d_details;
628 unsigned int cflag;
629
630 p_priv = usb_get_serial_port_data(port);
631 d_details = p_priv->device_details;
632 cflag = tty->termios.c_cflag;
633 device_port = port->port_number;
634
635 /* Baud rate calculation takes baud rate as an integer
636 so other rates can be generated if desired. */
637 baud_rate = tty_get_baud_rate(tty);
638 /* If no match or invalid, don't change */
639 if (d_details->calculate_baud_rate(port, baud_rate, d_details->baudclk,
640 NULL, NULL, NULL, device_port) == KEYSPAN_BAUD_RATE_OK) {
641 /* FIXME - more to do here to ensure rate changes cleanly */
642 /* FIXME - calculate exact rate from divisor ? */
643 p_priv->baud = baud_rate;
644 } else
645 baud_rate = tty_termios_baud_rate(old_termios);
646
647 tty_encode_baud_rate(tty, baud_rate, baud_rate);
648 /* set CTS/RTS handshake etc. */
649 p_priv->cflag = cflag;
650 p_priv->flow_control = (cflag & CRTSCTS) ? flow_cts : flow_none;
651
652 /* Mark/Space not supported */
653 tty->termios.c_cflag &= ~CMSPAR;
654
655 keyspan_send_setup(port, 0);
656}
657
658static int keyspan_tiocmget(struct tty_struct *tty)
659{
660 struct usb_serial_port *port = tty->driver_data;
661 struct keyspan_port_private *p_priv = usb_get_serial_port_data(port);
662 unsigned int value;
663
664 value = ((p_priv->rts_state) ? TIOCM_RTS : 0) |
665 ((p_priv->dtr_state) ? TIOCM_DTR : 0) |
666 ((p_priv->cts_state) ? TIOCM_CTS : 0) |
667 ((p_priv->dsr_state) ? TIOCM_DSR : 0) |
668 ((p_priv->dcd_state) ? TIOCM_CAR : 0) |
669 ((p_priv->ri_state) ? TIOCM_RNG : 0);
670
671 return value;
672}
673
674static int keyspan_tiocmset(struct tty_struct *tty,
675 unsigned int set, unsigned int clear)
676{
677 struct usb_serial_port *port = tty->driver_data;
678 struct keyspan_port_private *p_priv = usb_get_serial_port_data(port);
679
680 if (set & TIOCM_RTS)
681 p_priv->rts_state = 1;
682 if (set & TIOCM_DTR)
683 p_priv->dtr_state = 1;
684 if (clear & TIOCM_RTS)
685 p_priv->rts_state = 0;
686 if (clear & TIOCM_DTR)
687 p_priv->dtr_state = 0;
688 keyspan_send_setup(port, 0);
689 return 0;
690}
691
692/* Write function is similar for the four protocols used
693 with only a minor change for usa90 (usa19hs) required */
694static int keyspan_write(struct tty_struct *tty,
695 struct usb_serial_port *port, const unsigned char *buf, int count)
696{
697 struct keyspan_port_private *p_priv;
698 const struct keyspan_device_details *d_details;
699 int flip;
700 int left, todo;
701 struct urb *this_urb;
702 int err, maxDataLen, dataOffset;
703
704 p_priv = usb_get_serial_port_data(port);
705 d_details = p_priv->device_details;
706
707 if (d_details->msg_format == msg_usa90) {
708 maxDataLen = 64;
709 dataOffset = 0;
710 } else {
711 maxDataLen = 63;
712 dataOffset = 1;
713 }
714
715 dev_dbg(&port->dev, "%s - %d chars, flip=%d\n", __func__, count,
716 p_priv->out_flip);
717
718 for (left = count; left > 0; left -= todo) {
719 todo = left;
720 if (todo > maxDataLen)
721 todo = maxDataLen;
722
723 flip = p_priv->out_flip;
724
725 /* Check we have a valid urb/endpoint before we use it... */
726 this_urb = p_priv->out_urbs[flip];
727 if (this_urb == NULL) {
728 /* no bulk out, so return 0 bytes written */
729 dev_dbg(&port->dev, "%s - no output urb :(\n", __func__);
730 return count;
731 }
732
733 dev_dbg(&port->dev, "%s - endpoint %x flip %d\n",
734 __func__, usb_pipeendpoint(this_urb->pipe), flip);
735
736 if (this_urb->status == -EINPROGRESS) {
737 if (time_before(jiffies,
738 p_priv->tx_start_time[flip] + 10 * HZ))
739 break;
740 usb_unlink_urb(this_urb);
741 break;
742 }
743
744 /* First byte in buffer is "last flag" (except for usa19hx)
745 - unused so for now so set to zero */
746 ((char *)this_urb->transfer_buffer)[0] = 0;
747
748 memcpy(this_urb->transfer_buffer + dataOffset, buf, todo);
749 buf += todo;
750
751 /* send the data out the bulk port */
752 this_urb->transfer_buffer_length = todo + dataOffset;
753
754 err = usb_submit_urb(this_urb, GFP_ATOMIC);
755 if (err != 0)
756 dev_dbg(&port->dev, "usb_submit_urb(write bulk) failed (%d)\n", err);
757 p_priv->tx_start_time[flip] = jiffies;
758
759 /* Flip for next time if usa26 or usa28 interface
760 (not used on usa49) */
761 p_priv->out_flip = (flip + 1) & d_details->outdat_endp_flip;
762 }
763
764 return count - left;
765}
766
767static void usa26_indat_callback(struct urb *urb)
768{
769 int i, err;
770 int endpoint;
771 struct usb_serial_port *port;
772 unsigned char *data = urb->transfer_buffer;
773 int status = urb->status;
774
775 endpoint = usb_pipeendpoint(urb->pipe);
776
777 if (status) {
778 dev_dbg(&urb->dev->dev, "%s - nonzero status %d on endpoint %x\n",
779 __func__, status, endpoint);
780 return;
781 }
782
783 port = urb->context;
784 if (urb->actual_length) {
785 /* 0x80 bit is error flag */
786 if ((data[0] & 0x80) == 0) {
787 /* no errors on individual bytes, only
788 possible overrun err */
789 if (data[0] & RXERROR_OVERRUN) {
790 tty_insert_flip_char(&port->port, 0,
791 TTY_OVERRUN);
792 }
793 for (i = 1; i < urb->actual_length ; ++i)
794 tty_insert_flip_char(&port->port, data[i],
795 TTY_NORMAL);
796 } else {
797 /* some bytes had errors, every byte has status */
798 dev_dbg(&port->dev, "%s - RX error!!!!\n", __func__);
799 for (i = 0; i + 1 < urb->actual_length; i += 2) {
800 int stat = data[i];
801 int flag = TTY_NORMAL;
802
803 if (stat & RXERROR_OVERRUN) {
804 tty_insert_flip_char(&port->port, 0,
805 TTY_OVERRUN);
806 }
807 /* XXX should handle break (0x10) */
808 if (stat & RXERROR_PARITY)
809 flag = TTY_PARITY;
810 else if (stat & RXERROR_FRAMING)
811 flag = TTY_FRAME;
812
813 tty_insert_flip_char(&port->port, data[i+1],
814 flag);
815 }
816 }
817 tty_flip_buffer_push(&port->port);
818 }
819
820 /* Resubmit urb so we continue receiving */
821 err = usb_submit_urb(urb, GFP_ATOMIC);
822 if (err != 0)
823 dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err);
824}
825
826/* Outdat handling is common for all devices */
827static void usa2x_outdat_callback(struct urb *urb)
828{
829 struct usb_serial_port *port;
830 struct keyspan_port_private *p_priv;
831
832 port = urb->context;
833 p_priv = usb_get_serial_port_data(port);
834 dev_dbg(&port->dev, "%s - urb %d\n", __func__, urb == p_priv->out_urbs[1]);
835
836 usb_serial_port_softint(port);
837}
838
839static void usa26_inack_callback(struct urb *urb)
840{
841}
842
843static void usa26_outcont_callback(struct urb *urb)
844{
845 struct usb_serial_port *port;
846 struct keyspan_port_private *p_priv;
847
848 port = urb->context;
849 p_priv = usb_get_serial_port_data(port);
850
851 if (p_priv->resend_cont) {
852 dev_dbg(&port->dev, "%s - sending setup\n", __func__);
853 keyspan_usa26_send_setup(port->serial, port,
854 p_priv->resend_cont - 1);
855 }
856}
857
858static void usa26_instat_callback(struct urb *urb)
859{
860 unsigned char *data = urb->transfer_buffer;
861 struct keyspan_usa26_portStatusMessage *msg;
862 struct usb_serial *serial;
863 struct usb_serial_port *port;
864 struct keyspan_port_private *p_priv;
865 int old_dcd_state, err;
866 int status = urb->status;
867
868 serial = urb->context;
869
870 if (status) {
871 dev_dbg(&urb->dev->dev, "%s - nonzero status: %d\n",
872 __func__, status);
873 return;
874 }
875 if (urb->actual_length != 9) {
876 dev_dbg(&urb->dev->dev, "%s - %d byte report??\n", __func__, urb->actual_length);
877 goto exit;
878 }
879
880 msg = (struct keyspan_usa26_portStatusMessage *)data;
881
882 /* Check port number from message and retrieve private data */
883 if (msg->port >= serial->num_ports) {
884 dev_dbg(&urb->dev->dev, "%s - Unexpected port number %d\n", __func__, msg->port);
885 goto exit;
886 }
887 port = serial->port[msg->port];
888 p_priv = usb_get_serial_port_data(port);
889 if (!p_priv)
890 goto resubmit;
891
892 /* Update handshaking pin state information */
893 old_dcd_state = p_priv->dcd_state;
894 p_priv->cts_state = ((msg->hskia_cts) ? 1 : 0);
895 p_priv->dsr_state = ((msg->dsr) ? 1 : 0);
896 p_priv->dcd_state = ((msg->gpia_dcd) ? 1 : 0);
897 p_priv->ri_state = ((msg->ri) ? 1 : 0);
898
899 if (old_dcd_state != p_priv->dcd_state)
900 tty_port_tty_hangup(&port->port, true);
901resubmit:
902 /* Resubmit urb so we continue receiving */
903 err = usb_submit_urb(urb, GFP_ATOMIC);
904 if (err != 0)
905 dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err);
906exit: ;
907}
908
909static void usa26_glocont_callback(struct urb *urb)
910{
911}
912
913
914static void usa28_indat_callback(struct urb *urb)
915{
916 int err;
917 struct usb_serial_port *port;
918 unsigned char *data;
919 struct keyspan_port_private *p_priv;
920 int status = urb->status;
921
922 port = urb->context;
923 p_priv = usb_get_serial_port_data(port);
924 data = urb->transfer_buffer;
925
926 if (urb != p_priv->in_urbs[p_priv->in_flip])
927 return;
928
929 do {
930 if (status) {
931 dev_dbg(&urb->dev->dev, "%s - nonzero status %d on endpoint %x\n",
932 __func__, status, usb_pipeendpoint(urb->pipe));
933 return;
934 }
935
936 port = urb->context;
937 p_priv = usb_get_serial_port_data(port);
938 data = urb->transfer_buffer;
939
940 if (urb->actual_length) {
941 tty_insert_flip_string(&port->port, data,
942 urb->actual_length);
943 tty_flip_buffer_push(&port->port);
944 }
945
946 /* Resubmit urb so we continue receiving */
947 err = usb_submit_urb(urb, GFP_ATOMIC);
948 if (err != 0)
949 dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n",
950 __func__, err);
951 p_priv->in_flip ^= 1;
952
953 urb = p_priv->in_urbs[p_priv->in_flip];
954 } while (urb->status != -EINPROGRESS);
955}
956
957static void usa28_inack_callback(struct urb *urb)
958{
959}
960
961static void usa28_outcont_callback(struct urb *urb)
962{
963 struct usb_serial_port *port;
964 struct keyspan_port_private *p_priv;
965
966 port = urb->context;
967 p_priv = usb_get_serial_port_data(port);
968
969 if (p_priv->resend_cont) {
970 dev_dbg(&port->dev, "%s - sending setup\n", __func__);
971 keyspan_usa28_send_setup(port->serial, port,
972 p_priv->resend_cont - 1);
973 }
974}
975
976static void usa28_instat_callback(struct urb *urb)
977{
978 int err;
979 unsigned char *data = urb->transfer_buffer;
980 struct keyspan_usa28_portStatusMessage *msg;
981 struct usb_serial *serial;
982 struct usb_serial_port *port;
983 struct keyspan_port_private *p_priv;
984 int old_dcd_state;
985 int status = urb->status;
986
987 serial = urb->context;
988
989 if (status) {
990 dev_dbg(&urb->dev->dev, "%s - nonzero status: %d\n",
991 __func__, status);
992 return;
993 }
994
995 if (urb->actual_length != sizeof(struct keyspan_usa28_portStatusMessage)) {
996 dev_dbg(&urb->dev->dev, "%s - bad length %d\n", __func__, urb->actual_length);
997 goto exit;
998 }
999
1000 msg = (struct keyspan_usa28_portStatusMessage *)data;
1001
1002 /* Check port number from message and retrieve private data */
1003 if (msg->port >= serial->num_ports) {
1004 dev_dbg(&urb->dev->dev, "%s - Unexpected port number %d\n", __func__, msg->port);
1005 goto exit;
1006 }
1007 port = serial->port[msg->port];
1008 p_priv = usb_get_serial_port_data(port);
1009 if (!p_priv)
1010 goto resubmit;
1011
1012 /* Update handshaking pin state information */
1013 old_dcd_state = p_priv->dcd_state;
1014 p_priv->cts_state = ((msg->cts) ? 1 : 0);
1015 p_priv->dsr_state = ((msg->dsr) ? 1 : 0);
1016 p_priv->dcd_state = ((msg->dcd) ? 1 : 0);
1017 p_priv->ri_state = ((msg->ri) ? 1 : 0);
1018
1019 if (old_dcd_state != p_priv->dcd_state && old_dcd_state)
1020 tty_port_tty_hangup(&port->port, true);
1021resubmit:
1022 /* Resubmit urb so we continue receiving */
1023 err = usb_submit_urb(urb, GFP_ATOMIC);
1024 if (err != 0)
1025 dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err);
1026exit: ;
1027}
1028
1029static void usa28_glocont_callback(struct urb *urb)
1030{
1031}
1032
1033
1034static void usa49_glocont_callback(struct urb *urb)
1035{
1036 struct usb_serial *serial;
1037 struct usb_serial_port *port;
1038 struct keyspan_port_private *p_priv;
1039 int i;
1040
1041 serial = urb->context;
1042 for (i = 0; i < serial->num_ports; ++i) {
1043 port = serial->port[i];
1044 p_priv = usb_get_serial_port_data(port);
1045 if (!p_priv)
1046 continue;
1047
1048 if (p_priv->resend_cont) {
1049 dev_dbg(&port->dev, "%s - sending setup\n", __func__);
1050 keyspan_usa49_send_setup(serial, port,
1051 p_priv->resend_cont - 1);
1052 break;
1053 }
1054 }
1055}
1056
1057 /* This is actually called glostat in the Keyspan
1058 doco */
1059static void usa49_instat_callback(struct urb *urb)
1060{
1061 int err;
1062 unsigned char *data = urb->transfer_buffer;
1063 struct keyspan_usa49_portStatusMessage *msg;
1064 struct usb_serial *serial;
1065 struct usb_serial_port *port;
1066 struct keyspan_port_private *p_priv;
1067 int old_dcd_state;
1068 int status = urb->status;
1069
1070 serial = urb->context;
1071
1072 if (status) {
1073 dev_dbg(&urb->dev->dev, "%s - nonzero status: %d\n",
1074 __func__, status);
1075 return;
1076 }
1077
1078 if (urb->actual_length !=
1079 sizeof(struct keyspan_usa49_portStatusMessage)) {
1080 dev_dbg(&urb->dev->dev, "%s - bad length %d\n", __func__, urb->actual_length);
1081 goto exit;
1082 }
1083
1084 msg = (struct keyspan_usa49_portStatusMessage *)data;
1085
1086 /* Check port number from message and retrieve private data */
1087 if (msg->portNumber >= serial->num_ports) {
1088 dev_dbg(&urb->dev->dev, "%s - Unexpected port number %d\n",
1089 __func__, msg->portNumber);
1090 goto exit;
1091 }
1092 port = serial->port[msg->portNumber];
1093 p_priv = usb_get_serial_port_data(port);
1094 if (!p_priv)
1095 goto resubmit;
1096
1097 /* Update handshaking pin state information */
1098 old_dcd_state = p_priv->dcd_state;
1099 p_priv->cts_state = ((msg->cts) ? 1 : 0);
1100 p_priv->dsr_state = ((msg->dsr) ? 1 : 0);
1101 p_priv->dcd_state = ((msg->dcd) ? 1 : 0);
1102 p_priv->ri_state = ((msg->ri) ? 1 : 0);
1103
1104 if (old_dcd_state != p_priv->dcd_state && old_dcd_state)
1105 tty_port_tty_hangup(&port->port, true);
1106resubmit:
1107 /* Resubmit urb so we continue receiving */
1108 err = usb_submit_urb(urb, GFP_ATOMIC);
1109 if (err != 0)
1110 dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err);
1111exit: ;
1112}
1113
1114static void usa49_inack_callback(struct urb *urb)
1115{
1116}
1117
1118static void usa49_indat_callback(struct urb *urb)
1119{
1120 int i, err;
1121 int endpoint;
1122 struct usb_serial_port *port;
1123 unsigned char *data = urb->transfer_buffer;
1124 int status = urb->status;
1125
1126 endpoint = usb_pipeendpoint(urb->pipe);
1127
1128 if (status) {
1129 dev_dbg(&urb->dev->dev, "%s - nonzero status %d on endpoint %x\n",
1130 __func__, status, endpoint);
1131 return;
1132 }
1133
1134 port = urb->context;
1135 if (urb->actual_length) {
1136 /* 0x80 bit is error flag */
1137 if ((data[0] & 0x80) == 0) {
1138 /* no error on any byte */
1139 tty_insert_flip_string(&port->port, data + 1,
1140 urb->actual_length - 1);
1141 } else {
1142 /* some bytes had errors, every byte has status */
1143 for (i = 0; i + 1 < urb->actual_length; i += 2) {
1144 int stat = data[i];
1145 int flag = TTY_NORMAL;
1146
1147 if (stat & RXERROR_OVERRUN) {
1148 tty_insert_flip_char(&port->port, 0,
1149 TTY_OVERRUN);
1150 }
1151 /* XXX should handle break (0x10) */
1152 if (stat & RXERROR_PARITY)
1153 flag = TTY_PARITY;
1154 else if (stat & RXERROR_FRAMING)
1155 flag = TTY_FRAME;
1156
1157 tty_insert_flip_char(&port->port, data[i+1],
1158 flag);
1159 }
1160 }
1161 tty_flip_buffer_push(&port->port);
1162 }
1163
1164 /* Resubmit urb so we continue receiving */
1165 err = usb_submit_urb(urb, GFP_ATOMIC);
1166 if (err != 0)
1167 dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err);
1168}
1169
1170static void usa49wg_indat_callback(struct urb *urb)
1171{
1172 int i, len, x, err;
1173 struct usb_serial *serial;
1174 struct usb_serial_port *port;
1175 unsigned char *data = urb->transfer_buffer;
1176 int status = urb->status;
1177
1178 serial = urb->context;
1179
1180 if (status) {
1181 dev_dbg(&urb->dev->dev, "%s - nonzero status: %d\n",
1182 __func__, status);
1183 return;
1184 }
1185
1186 /* inbound data is in the form P#, len, status, data */
1187 i = 0;
1188 len = 0;
1189
1190 while (i < urb->actual_length) {
1191
1192 /* Check port number from message */
1193 if (data[i] >= serial->num_ports) {
1194 dev_dbg(&urb->dev->dev, "%s - Unexpected port number %d\n",
1195 __func__, data[i]);
1196 return;
1197 }
1198 port = serial->port[data[i++]];
1199 len = data[i++];
1200
1201 /* 0x80 bit is error flag */
1202 if ((data[i] & 0x80) == 0) {
1203 /* no error on any byte */
1204 i++;
1205 for (x = 1; x < len && i < urb->actual_length; ++x)
1206 tty_insert_flip_char(&port->port,
1207 data[i++], 0);
1208 } else {
1209 /*
1210 * some bytes had errors, every byte has status
1211 */
1212 for (x = 0; x + 1 < len &&
1213 i + 1 < urb->actual_length; x += 2) {
1214 int stat = data[i];
1215 int flag = TTY_NORMAL;
1216
1217 if (stat & RXERROR_OVERRUN) {
1218 tty_insert_flip_char(&port->port, 0,
1219 TTY_OVERRUN);
1220 }
1221 /* XXX should handle break (0x10) */
1222 if (stat & RXERROR_PARITY)
1223 flag = TTY_PARITY;
1224 else if (stat & RXERROR_FRAMING)
1225 flag = TTY_FRAME;
1226
1227 tty_insert_flip_char(&port->port, data[i+1],
1228 flag);
1229 i += 2;
1230 }
1231 }
1232 tty_flip_buffer_push(&port->port);
1233 }
1234
1235 /* Resubmit urb so we continue receiving */
1236 err = usb_submit_urb(urb, GFP_ATOMIC);
1237 if (err != 0)
1238 dev_dbg(&urb->dev->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err);
1239}
1240
1241/* not used, usa-49 doesn't have per-port control endpoints */
1242static void usa49_outcont_callback(struct urb *urb)
1243{
1244}
1245
1246static void usa90_indat_callback(struct urb *urb)
1247{
1248 int i, err;
1249 int endpoint;
1250 struct usb_serial_port *port;
1251 struct keyspan_port_private *p_priv;
1252 unsigned char *data = urb->transfer_buffer;
1253 int status = urb->status;
1254
1255 endpoint = usb_pipeendpoint(urb->pipe);
1256
1257 if (status) {
1258 dev_dbg(&urb->dev->dev, "%s - nonzero status %d on endpoint %x\n",
1259 __func__, status, endpoint);
1260 return;
1261 }
1262
1263 port = urb->context;
1264 p_priv = usb_get_serial_port_data(port);
1265
1266 if (urb->actual_length) {
1267 /* if current mode is DMA, looks like usa28 format
1268 otherwise looks like usa26 data format */
1269
1270 if (p_priv->baud > 57600)
1271 tty_insert_flip_string(&port->port, data,
1272 urb->actual_length);
1273 else {
1274 /* 0x80 bit is error flag */
1275 if ((data[0] & 0x80) == 0) {
1276 /* no errors on individual bytes, only
1277 possible overrun err*/
1278 if (data[0] & RXERROR_OVERRUN) {
1279 tty_insert_flip_char(&port->port, 0,
1280 TTY_OVERRUN);
1281 }
1282 for (i = 1; i < urb->actual_length ; ++i)
1283 tty_insert_flip_char(&port->port,
1284 data[i], TTY_NORMAL);
1285 } else {
1286 /* some bytes had errors, every byte has status */
1287 dev_dbg(&port->dev, "%s - RX error!!!!\n", __func__);
1288 for (i = 0; i + 1 < urb->actual_length; i += 2) {
1289 int stat = data[i];
1290 int flag = TTY_NORMAL;
1291
1292 if (stat & RXERROR_OVERRUN) {
1293 tty_insert_flip_char(
1294 &port->port, 0,
1295 TTY_OVERRUN);
1296 }
1297 /* XXX should handle break (0x10) */
1298 if (stat & RXERROR_PARITY)
1299 flag = TTY_PARITY;
1300 else if (stat & RXERROR_FRAMING)
1301 flag = TTY_FRAME;
1302
1303 tty_insert_flip_char(&port->port,
1304 data[i+1], flag);
1305 }
1306 }
1307 }
1308 tty_flip_buffer_push(&port->port);
1309 }
1310
1311 /* Resubmit urb so we continue receiving */
1312 err = usb_submit_urb(urb, GFP_ATOMIC);
1313 if (err != 0)
1314 dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err);
1315}
1316
1317
1318static void usa90_instat_callback(struct urb *urb)
1319{
1320 unsigned char *data = urb->transfer_buffer;
1321 struct keyspan_usa90_portStatusMessage *msg;
1322 struct usb_serial *serial;
1323 struct usb_serial_port *port;
1324 struct keyspan_port_private *p_priv;
1325 int old_dcd_state, err;
1326 int status = urb->status;
1327
1328 serial = urb->context;
1329
1330 if (status) {
1331 dev_dbg(&urb->dev->dev, "%s - nonzero status: %d\n",
1332 __func__, status);
1333 return;
1334 }
1335 if (urb->actual_length < 14) {
1336 dev_dbg(&urb->dev->dev, "%s - %d byte report??\n", __func__, urb->actual_length);
1337 goto exit;
1338 }
1339
1340 msg = (struct keyspan_usa90_portStatusMessage *)data;
1341
1342 /* Now do something useful with the data */
1343
1344 port = serial->port[0];
1345 p_priv = usb_get_serial_port_data(port);
1346 if (!p_priv)
1347 goto resubmit;
1348
1349 /* Update handshaking pin state information */
1350 old_dcd_state = p_priv->dcd_state;
1351 p_priv->cts_state = ((msg->cts) ? 1 : 0);
1352 p_priv->dsr_state = ((msg->dsr) ? 1 : 0);
1353 p_priv->dcd_state = ((msg->dcd) ? 1 : 0);
1354 p_priv->ri_state = ((msg->ri) ? 1 : 0);
1355
1356 if (old_dcd_state != p_priv->dcd_state && old_dcd_state)
1357 tty_port_tty_hangup(&port->port, true);
1358resubmit:
1359 /* Resubmit urb so we continue receiving */
1360 err = usb_submit_urb(urb, GFP_ATOMIC);
1361 if (err != 0)
1362 dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err);
1363exit:
1364 ;
1365}
1366
1367static void usa90_outcont_callback(struct urb *urb)
1368{
1369 struct usb_serial_port *port;
1370 struct keyspan_port_private *p_priv;
1371
1372 port = urb->context;
1373 p_priv = usb_get_serial_port_data(port);
1374
1375 if (p_priv->resend_cont) {
1376 dev_dbg(&urb->dev->dev, "%s - sending setup\n", __func__);
1377 keyspan_usa90_send_setup(port->serial, port,
1378 p_priv->resend_cont - 1);
1379 }
1380}
1381
1382/* Status messages from the 28xg */
1383static void usa67_instat_callback(struct urb *urb)
1384{
1385 int err;
1386 unsigned char *data = urb->transfer_buffer;
1387 struct keyspan_usa67_portStatusMessage *msg;
1388 struct usb_serial *serial;
1389 struct usb_serial_port *port;
1390 struct keyspan_port_private *p_priv;
1391 int old_dcd_state;
1392 int status = urb->status;
1393
1394 serial = urb->context;
1395
1396 if (status) {
1397 dev_dbg(&urb->dev->dev, "%s - nonzero status: %d\n",
1398 __func__, status);
1399 return;
1400 }
1401
1402 if (urb->actual_length !=
1403 sizeof(struct keyspan_usa67_portStatusMessage)) {
1404 dev_dbg(&urb->dev->dev, "%s - bad length %d\n", __func__, urb->actual_length);
1405 return;
1406 }
1407
1408
1409 /* Now do something useful with the data */
1410 msg = (struct keyspan_usa67_portStatusMessage *)data;
1411
1412 /* Check port number from message and retrieve private data */
1413 if (msg->port >= serial->num_ports) {
1414 dev_dbg(&urb->dev->dev, "%s - Unexpected port number %d\n", __func__, msg->port);
1415 return;
1416 }
1417
1418 port = serial->port[msg->port];
1419 p_priv = usb_get_serial_port_data(port);
1420 if (!p_priv)
1421 goto resubmit;
1422
1423 /* Update handshaking pin state information */
1424 old_dcd_state = p_priv->dcd_state;
1425 p_priv->cts_state = ((msg->hskia_cts) ? 1 : 0);
1426 p_priv->dcd_state = ((msg->gpia_dcd) ? 1 : 0);
1427
1428 if (old_dcd_state != p_priv->dcd_state && old_dcd_state)
1429 tty_port_tty_hangup(&port->port, true);
1430resubmit:
1431 /* Resubmit urb so we continue receiving */
1432 err = usb_submit_urb(urb, GFP_ATOMIC);
1433 if (err != 0)
1434 dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err);
1435}
1436
1437static void usa67_glocont_callback(struct urb *urb)
1438{
1439 struct usb_serial *serial;
1440 struct usb_serial_port *port;
1441 struct keyspan_port_private *p_priv;
1442 int i;
1443
1444 serial = urb->context;
1445 for (i = 0; i < serial->num_ports; ++i) {
1446 port = serial->port[i];
1447 p_priv = usb_get_serial_port_data(port);
1448 if (!p_priv)
1449 continue;
1450
1451 if (p_priv->resend_cont) {
1452 dev_dbg(&port->dev, "%s - sending setup\n", __func__);
1453 keyspan_usa67_send_setup(serial, port,
1454 p_priv->resend_cont - 1);
1455 break;
1456 }
1457 }
1458}
1459
1460static unsigned int keyspan_write_room(struct tty_struct *tty)
1461{
1462 struct usb_serial_port *port = tty->driver_data;
1463 struct keyspan_port_private *p_priv;
1464 const struct keyspan_device_details *d_details;
1465 int flip;
1466 unsigned int data_len;
1467 struct urb *this_urb;
1468
1469 p_priv = usb_get_serial_port_data(port);
1470 d_details = p_priv->device_details;
1471
1472 /* FIXME: locking */
1473 if (d_details->msg_format == msg_usa90)
1474 data_len = 64;
1475 else
1476 data_len = 63;
1477
1478 flip = p_priv->out_flip;
1479
1480 /* Check both endpoints to see if any are available. */
1481 this_urb = p_priv->out_urbs[flip];
1482 if (this_urb != NULL) {
1483 if (this_urb->status != -EINPROGRESS)
1484 return data_len;
1485 flip = (flip + 1) & d_details->outdat_endp_flip;
1486 this_urb = p_priv->out_urbs[flip];
1487 if (this_urb != NULL) {
1488 if (this_urb->status != -EINPROGRESS)
1489 return data_len;
1490 }
1491 }
1492 return 0;
1493}
1494
1495
1496static int keyspan_open(struct tty_struct *tty, struct usb_serial_port *port)
1497{
1498 struct keyspan_port_private *p_priv;
1499 const struct keyspan_device_details *d_details;
1500 int i, err;
1501 int baud_rate, device_port;
1502 struct urb *urb;
1503 unsigned int cflag = 0;
1504
1505 p_priv = usb_get_serial_port_data(port);
1506 d_details = p_priv->device_details;
1507
1508 /* Set some sane defaults */
1509 p_priv->rts_state = 1;
1510 p_priv->dtr_state = 1;
1511 p_priv->baud = 9600;
1512
1513 /* force baud and lcr to be set on open */
1514 p_priv->old_baud = 0;
1515 p_priv->old_cflag = 0;
1516
1517 p_priv->out_flip = 0;
1518 p_priv->in_flip = 0;
1519
1520 /* Reset low level data toggle and start reading from endpoints */
1521 for (i = 0; i < 2; i++) {
1522 urb = p_priv->in_urbs[i];
1523 if (urb == NULL)
1524 continue;
1525
1526 /* make sure endpoint data toggle is synchronized
1527 with the device */
1528 usb_clear_halt(urb->dev, urb->pipe);
1529 err = usb_submit_urb(urb, GFP_KERNEL);
1530 if (err != 0)
1531 dev_dbg(&port->dev, "%s - submit urb %d failed (%d)\n", __func__, i, err);
1532 }
1533
1534 /* Reset low level data toggle on out endpoints */
1535 for (i = 0; i < 2; i++) {
1536 urb = p_priv->out_urbs[i];
1537 if (urb == NULL)
1538 continue;
1539 /* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
1540 usb_pipeout(urb->pipe), 0); */
1541 }
1542
1543 /* get the terminal config for the setup message now so we don't
1544 * need to send 2 of them */
1545
1546 device_port = port->port_number;
1547 if (tty) {
1548 cflag = tty->termios.c_cflag;
1549 /* Baud rate calculation takes baud rate as an integer
1550 so other rates can be generated if desired. */
1551 baud_rate = tty_get_baud_rate(tty);
1552 /* If no match or invalid, leave as default */
1553 if (baud_rate >= 0
1554 && d_details->calculate_baud_rate(port, baud_rate, d_details->baudclk,
1555 NULL, NULL, NULL, device_port) == KEYSPAN_BAUD_RATE_OK) {
1556 p_priv->baud = baud_rate;
1557 }
1558 }
1559 /* set CTS/RTS handshake etc. */
1560 p_priv->cflag = cflag;
1561 p_priv->flow_control = (cflag & CRTSCTS) ? flow_cts : flow_none;
1562
1563 keyspan_send_setup(port, 1);
1564 /* mdelay(100); */
1565 /* keyspan_set_termios(port, NULL); */
1566
1567 return 0;
1568}
1569
1570static void keyspan_dtr_rts(struct usb_serial_port *port, int on)
1571{
1572 struct keyspan_port_private *p_priv = usb_get_serial_port_data(port);
1573
1574 p_priv->rts_state = on;
1575 p_priv->dtr_state = on;
1576 keyspan_send_setup(port, 0);
1577}
1578
1579static void keyspan_close(struct usb_serial_port *port)
1580{
1581 int i;
1582 struct keyspan_port_private *p_priv;
1583
1584 p_priv = usb_get_serial_port_data(port);
1585
1586 p_priv->rts_state = 0;
1587 p_priv->dtr_state = 0;
1588
1589 keyspan_send_setup(port, 2);
1590 /* pilot-xfer seems to work best with this delay */
1591 mdelay(100);
1592
1593 p_priv->out_flip = 0;
1594 p_priv->in_flip = 0;
1595
1596 usb_kill_urb(p_priv->inack_urb);
1597 for (i = 0; i < 2; i++) {
1598 usb_kill_urb(p_priv->in_urbs[i]);
1599 usb_kill_urb(p_priv->out_urbs[i]);
1600 }
1601}
1602
1603/* download the firmware to a pre-renumeration device */
1604static int keyspan_fake_startup(struct usb_serial *serial)
1605{
1606 char *fw_name;
1607
1608 dev_dbg(&serial->dev->dev, "Keyspan startup version %04x product %04x\n",
1609 le16_to_cpu(serial->dev->descriptor.bcdDevice),
1610 le16_to_cpu(serial->dev->descriptor.idProduct));
1611
1612 if ((le16_to_cpu(serial->dev->descriptor.bcdDevice) & 0x8000)
1613 != 0x8000) {
1614 dev_dbg(&serial->dev->dev, "Firmware already loaded. Quitting.\n");
1615 return 1;
1616 }
1617
1618 /* Select firmware image on the basis of idProduct */
1619 switch (le16_to_cpu(serial->dev->descriptor.idProduct)) {
1620 case keyspan_usa28_pre_product_id:
1621 fw_name = "keyspan/usa28.fw";
1622 break;
1623
1624 case keyspan_usa28x_pre_product_id:
1625 fw_name = "keyspan/usa28x.fw";
1626 break;
1627
1628 case keyspan_usa28xa_pre_product_id:
1629 fw_name = "keyspan/usa28xa.fw";
1630 break;
1631
1632 case keyspan_usa28xb_pre_product_id:
1633 fw_name = "keyspan/usa28xb.fw";
1634 break;
1635
1636 case keyspan_usa19_pre_product_id:
1637 fw_name = "keyspan/usa19.fw";
1638 break;
1639
1640 case keyspan_usa19qi_pre_product_id:
1641 fw_name = "keyspan/usa19qi.fw";
1642 break;
1643
1644 case keyspan_mpr_pre_product_id:
1645 fw_name = "keyspan/mpr.fw";
1646 break;
1647
1648 case keyspan_usa19qw_pre_product_id:
1649 fw_name = "keyspan/usa19qw.fw";
1650 break;
1651
1652 case keyspan_usa18x_pre_product_id:
1653 fw_name = "keyspan/usa18x.fw";
1654 break;
1655
1656 case keyspan_usa19w_pre_product_id:
1657 fw_name = "keyspan/usa19w.fw";
1658 break;
1659
1660 case keyspan_usa49w_pre_product_id:
1661 fw_name = "keyspan/usa49w.fw";
1662 break;
1663
1664 case keyspan_usa49wlc_pre_product_id:
1665 fw_name = "keyspan/usa49wlc.fw";
1666 break;
1667
1668 default:
1669 dev_err(&serial->dev->dev, "Unknown product ID (%04x)\n",
1670 le16_to_cpu(serial->dev->descriptor.idProduct));
1671 return 1;
1672 }
1673
1674 dev_dbg(&serial->dev->dev, "Uploading Keyspan %s firmware.\n", fw_name);
1675
1676 if (ezusb_fx1_ihex_firmware_download(serial->dev, fw_name) < 0) {
1677 dev_err(&serial->dev->dev, "failed to load firmware \"%s\"\n",
1678 fw_name);
1679 return -ENOENT;
1680 }
1681
1682 /* after downloading firmware Renumeration will occur in a
1683 moment and the new device will bind to the real driver */
1684
1685 /* we don't want this device to have a driver assigned to it. */
1686 return 1;
1687}
1688
1689/* Helper functions used by keyspan_setup_urbs */
1690static struct usb_endpoint_descriptor const *find_ep(struct usb_serial const *serial,
1691 int endpoint)
1692{
1693 struct usb_host_interface *iface_desc;
1694 struct usb_endpoint_descriptor *ep;
1695 int i;
1696
1697 iface_desc = serial->interface->cur_altsetting;
1698 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
1699 ep = &iface_desc->endpoint[i].desc;
1700 if (ep->bEndpointAddress == endpoint)
1701 return ep;
1702 }
1703 dev_warn(&serial->interface->dev, "found no endpoint descriptor for endpoint %x\n",
1704 endpoint);
1705 return NULL;
1706}
1707
1708static struct urb *keyspan_setup_urb(struct usb_serial *serial, int endpoint,
1709 int dir, void *ctx, char *buf, int len,
1710 void (*callback)(struct urb *))
1711{
1712 struct urb *urb;
1713 struct usb_endpoint_descriptor const *ep_desc;
1714 char const *ep_type_name;
1715
1716 if (endpoint == -1)
1717 return NULL; /* endpoint not needed */
1718
1719 dev_dbg(&serial->interface->dev, "%s - alloc for endpoint %x\n",
1720 __func__, endpoint);
1721 urb = usb_alloc_urb(0, GFP_KERNEL); /* No ISO */
1722 if (!urb)
1723 return NULL;
1724
1725 if (endpoint == 0) {
1726 /* control EP filled in when used */
1727 return urb;
1728 }
1729
1730 ep_desc = find_ep(serial, endpoint);
1731 if (!ep_desc) {
1732 usb_free_urb(urb);
1733 return NULL;
1734 }
1735 if (usb_endpoint_xfer_int(ep_desc)) {
1736 ep_type_name = "INT";
1737 usb_fill_int_urb(urb, serial->dev,
1738 usb_sndintpipe(serial->dev, endpoint) | dir,
1739 buf, len, callback, ctx,
1740 ep_desc->bInterval);
1741 } else if (usb_endpoint_xfer_bulk(ep_desc)) {
1742 ep_type_name = "BULK";
1743 usb_fill_bulk_urb(urb, serial->dev,
1744 usb_sndbulkpipe(serial->dev, endpoint) | dir,
1745 buf, len, callback, ctx);
1746 } else {
1747 dev_warn(&serial->interface->dev,
1748 "unsupported endpoint type %x\n",
1749 usb_endpoint_type(ep_desc));
1750 usb_free_urb(urb);
1751 return NULL;
1752 }
1753
1754 dev_dbg(&serial->interface->dev, "%s - using urb %p for %s endpoint %x\n",
1755 __func__, urb, ep_type_name, endpoint);
1756 return urb;
1757}
1758
1759static struct callbacks {
1760 void (*instat_callback)(struct urb *);
1761 void (*glocont_callback)(struct urb *);
1762 void (*indat_callback)(struct urb *);
1763 void (*outdat_callback)(struct urb *);
1764 void (*inack_callback)(struct urb *);
1765 void (*outcont_callback)(struct urb *);
1766} keyspan_callbacks[] = {
1767 {
1768 /* msg_usa26 callbacks */
1769 .instat_callback = usa26_instat_callback,
1770 .glocont_callback = usa26_glocont_callback,
1771 .indat_callback = usa26_indat_callback,
1772 .outdat_callback = usa2x_outdat_callback,
1773 .inack_callback = usa26_inack_callback,
1774 .outcont_callback = usa26_outcont_callback,
1775 }, {
1776 /* msg_usa28 callbacks */
1777 .instat_callback = usa28_instat_callback,
1778 .glocont_callback = usa28_glocont_callback,
1779 .indat_callback = usa28_indat_callback,
1780 .outdat_callback = usa2x_outdat_callback,
1781 .inack_callback = usa28_inack_callback,
1782 .outcont_callback = usa28_outcont_callback,
1783 }, {
1784 /* msg_usa49 callbacks */
1785 .instat_callback = usa49_instat_callback,
1786 .glocont_callback = usa49_glocont_callback,
1787 .indat_callback = usa49_indat_callback,
1788 .outdat_callback = usa2x_outdat_callback,
1789 .inack_callback = usa49_inack_callback,
1790 .outcont_callback = usa49_outcont_callback,
1791 }, {
1792 /* msg_usa90 callbacks */
1793 .instat_callback = usa90_instat_callback,
1794 .glocont_callback = usa28_glocont_callback,
1795 .indat_callback = usa90_indat_callback,
1796 .outdat_callback = usa2x_outdat_callback,
1797 .inack_callback = usa28_inack_callback,
1798 .outcont_callback = usa90_outcont_callback,
1799 }, {
1800 /* msg_usa67 callbacks */
1801 .instat_callback = usa67_instat_callback,
1802 .glocont_callback = usa67_glocont_callback,
1803 .indat_callback = usa26_indat_callback,
1804 .outdat_callback = usa2x_outdat_callback,
1805 .inack_callback = usa26_inack_callback,
1806 .outcont_callback = usa26_outcont_callback,
1807 }
1808};
1809
1810 /* Generic setup urbs function that uses
1811 data in device_details */
1812static void keyspan_setup_urbs(struct usb_serial *serial)
1813{
1814 struct keyspan_serial_private *s_priv;
1815 const struct keyspan_device_details *d_details;
1816 struct callbacks *cback;
1817
1818 s_priv = usb_get_serial_data(serial);
1819 d_details = s_priv->device_details;
1820
1821 /* Setup values for the various callback routines */
1822 cback = &keyspan_callbacks[d_details->msg_format];
1823
1824 /* Allocate and set up urbs for each one that is in use,
1825 starting with instat endpoints */
1826 s_priv->instat_urb = keyspan_setup_urb
1827 (serial, d_details->instat_endpoint, USB_DIR_IN,
1828 serial, s_priv->instat_buf, INSTAT_BUFLEN,
1829 cback->instat_callback);
1830
1831 s_priv->indat_urb = keyspan_setup_urb
1832 (serial, d_details->indat_endpoint, USB_DIR_IN,
1833 serial, s_priv->indat_buf, INDAT49W_BUFLEN,
1834 usa49wg_indat_callback);
1835
1836 s_priv->glocont_urb = keyspan_setup_urb
1837 (serial, d_details->glocont_endpoint, USB_DIR_OUT,
1838 serial, s_priv->glocont_buf, GLOCONT_BUFLEN,
1839 cback->glocont_callback);
1840}
1841
1842/* usa19 function doesn't require prescaler */
1843static int keyspan_usa19_calc_baud(struct usb_serial_port *port,
1844 u32 baud_rate, u32 baudclk, u8 *rate_hi,
1845 u8 *rate_low, u8 *prescaler, int portnum)
1846{
1847 u32 b16, /* baud rate times 16 (actual rate used internally) */
1848 div, /* divisor */
1849 cnt; /* inverse of divisor (programmed into 8051) */
1850
1851 dev_dbg(&port->dev, "%s - %d.\n", __func__, baud_rate);
1852
1853 /* prevent divide by zero... */
1854 b16 = baud_rate * 16L;
1855 if (b16 == 0)
1856 return KEYSPAN_INVALID_BAUD_RATE;
1857 /* Any "standard" rate over 57k6 is marginal on the USA-19
1858 as we run out of divisor resolution. */
1859 if (baud_rate > 57600)
1860 return KEYSPAN_INVALID_BAUD_RATE;
1861
1862 /* calculate the divisor and the counter (its inverse) */
1863 div = baudclk / b16;
1864 if (div == 0)
1865 return KEYSPAN_INVALID_BAUD_RATE;
1866 else
1867 cnt = 0 - div;
1868
1869 if (div > 0xffff)
1870 return KEYSPAN_INVALID_BAUD_RATE;
1871
1872 /* return the counter values if non-null */
1873 if (rate_low)
1874 *rate_low = (u8) (cnt & 0xff);
1875 if (rate_hi)
1876 *rate_hi = (u8) ((cnt >> 8) & 0xff);
1877 if (rate_low && rate_hi)
1878 dev_dbg(&port->dev, "%s - %d %02x %02x.\n",
1879 __func__, baud_rate, *rate_hi, *rate_low);
1880 return KEYSPAN_BAUD_RATE_OK;
1881}
1882
1883/* usa19hs function doesn't require prescaler */
1884static int keyspan_usa19hs_calc_baud(struct usb_serial_port *port,
1885 u32 baud_rate, u32 baudclk, u8 *rate_hi,
1886 u8 *rate_low, u8 *prescaler, int portnum)
1887{
1888 u32 b16, /* baud rate times 16 (actual rate used internally) */
1889 div; /* divisor */
1890
1891 dev_dbg(&port->dev, "%s - %d.\n", __func__, baud_rate);
1892
1893 /* prevent divide by zero... */
1894 b16 = baud_rate * 16L;
1895 if (b16 == 0)
1896 return KEYSPAN_INVALID_BAUD_RATE;
1897
1898 /* calculate the divisor */
1899 div = baudclk / b16;
1900 if (div == 0)
1901 return KEYSPAN_INVALID_BAUD_RATE;
1902
1903 if (div > 0xffff)
1904 return KEYSPAN_INVALID_BAUD_RATE;
1905
1906 /* return the counter values if non-null */
1907 if (rate_low)
1908 *rate_low = (u8) (div & 0xff);
1909
1910 if (rate_hi)
1911 *rate_hi = (u8) ((div >> 8) & 0xff);
1912
1913 if (rate_low && rate_hi)
1914 dev_dbg(&port->dev, "%s - %d %02x %02x.\n",
1915 __func__, baud_rate, *rate_hi, *rate_low);
1916
1917 return KEYSPAN_BAUD_RATE_OK;
1918}
1919
1920static int keyspan_usa19w_calc_baud(struct usb_serial_port *port,
1921 u32 baud_rate, u32 baudclk, u8 *rate_hi,
1922 u8 *rate_low, u8 *prescaler, int portnum)
1923{
1924 u32 b16, /* baud rate times 16 (actual rate used internally) */
1925 clk, /* clock with 13/8 prescaler */
1926 div, /* divisor using 13/8 prescaler */
1927 res, /* resulting baud rate using 13/8 prescaler */
1928 diff, /* error using 13/8 prescaler */
1929 smallest_diff;
1930 u8 best_prescaler;
1931 int i;
1932
1933 dev_dbg(&port->dev, "%s - %d.\n", __func__, baud_rate);
1934
1935 /* prevent divide by zero */
1936 b16 = baud_rate * 16L;
1937 if (b16 == 0)
1938 return KEYSPAN_INVALID_BAUD_RATE;
1939
1940 /* Calculate prescaler by trying them all and looking
1941 for best fit */
1942
1943 /* start with largest possible difference */
1944 smallest_diff = 0xffffffff;
1945
1946 /* 0 is an invalid prescaler, used as a flag */
1947 best_prescaler = 0;
1948
1949 for (i = 8; i <= 0xff; ++i) {
1950 clk = (baudclk * 8) / (u32) i;
1951
1952 div = clk / b16;
1953 if (div == 0)
1954 continue;
1955
1956 res = clk / div;
1957 diff = (res > b16) ? (res-b16) : (b16-res);
1958
1959 if (diff < smallest_diff) {
1960 best_prescaler = i;
1961 smallest_diff = diff;
1962 }
1963 }
1964
1965 if (best_prescaler == 0)
1966 return KEYSPAN_INVALID_BAUD_RATE;
1967
1968 clk = (baudclk * 8) / (u32) best_prescaler;
1969 div = clk / b16;
1970
1971 /* return the divisor and prescaler if non-null */
1972 if (rate_low)
1973 *rate_low = (u8) (div & 0xff);
1974 if (rate_hi)
1975 *rate_hi = (u8) ((div >> 8) & 0xff);
1976 if (prescaler) {
1977 *prescaler = best_prescaler;
1978 /* dev_dbg(&port->dev, "%s - %d %d\n", __func__, *prescaler, div); */
1979 }
1980 return KEYSPAN_BAUD_RATE_OK;
1981}
1982
1983 /* USA-28 supports different maximum baud rates on each port */
1984static int keyspan_usa28_calc_baud(struct usb_serial_port *port,
1985 u32 baud_rate, u32 baudclk, u8 *rate_hi,
1986 u8 *rate_low, u8 *prescaler, int portnum)
1987{
1988 u32 b16, /* baud rate times 16 (actual rate used internally) */
1989 div, /* divisor */
1990 cnt; /* inverse of divisor (programmed into 8051) */
1991
1992 dev_dbg(&port->dev, "%s - %d.\n", __func__, baud_rate);
1993
1994 /* prevent divide by zero */
1995 b16 = baud_rate * 16L;
1996 if (b16 == 0)
1997 return KEYSPAN_INVALID_BAUD_RATE;
1998
1999 /* calculate the divisor and the counter (its inverse) */
2000 div = KEYSPAN_USA28_BAUDCLK / b16;
2001 if (div == 0)
2002 return KEYSPAN_INVALID_BAUD_RATE;
2003 else
2004 cnt = 0 - div;
2005
2006 /* check for out of range, based on portnum,
2007 and return result */
2008 if (portnum == 0) {
2009 if (div > 0xffff)
2010 return KEYSPAN_INVALID_BAUD_RATE;
2011 } else {
2012 if (portnum == 1) {
2013 if (div > 0xff)
2014 return KEYSPAN_INVALID_BAUD_RATE;
2015 } else
2016 return KEYSPAN_INVALID_BAUD_RATE;
2017 }
2018
2019 /* return the counter values if not NULL
2020 (port 1 will ignore retHi) */
2021 if (rate_low)
2022 *rate_low = (u8) (cnt & 0xff);
2023 if (rate_hi)
2024 *rate_hi = (u8) ((cnt >> 8) & 0xff);
2025 dev_dbg(&port->dev, "%s - %d OK.\n", __func__, baud_rate);
2026 return KEYSPAN_BAUD_RATE_OK;
2027}
2028
2029static int keyspan_usa26_send_setup(struct usb_serial *serial,
2030 struct usb_serial_port *port,
2031 int reset_port)
2032{
2033 struct keyspan_usa26_portControlMessage msg;
2034 struct keyspan_serial_private *s_priv;
2035 struct keyspan_port_private *p_priv;
2036 const struct keyspan_device_details *d_details;
2037 struct urb *this_urb;
2038 int device_port, err;
2039
2040 dev_dbg(&port->dev, "%s reset=%d\n", __func__, reset_port);
2041
2042 s_priv = usb_get_serial_data(serial);
2043 p_priv = usb_get_serial_port_data(port);
2044 d_details = s_priv->device_details;
2045 device_port = port->port_number;
2046
2047 this_urb = p_priv->outcont_urb;
2048
2049 /* Make sure we have an urb then send the message */
2050 if (this_urb == NULL) {
2051 dev_dbg(&port->dev, "%s - oops no urb.\n", __func__);
2052 return -1;
2053 }
2054
2055 dev_dbg(&port->dev, "%s - endpoint %x\n",
2056 __func__, usb_pipeendpoint(this_urb->pipe));
2057
2058 /* Save reset port val for resend.
2059 Don't overwrite resend for open/close condition. */
2060 if ((reset_port + 1) > p_priv->resend_cont)
2061 p_priv->resend_cont = reset_port + 1;
2062 if (this_urb->status == -EINPROGRESS) {
2063 /* dev_dbg(&port->dev, "%s - already writing\n", __func__); */
2064 mdelay(5);
2065 return -1;
2066 }
2067
2068 memset(&msg, 0, sizeof(struct keyspan_usa26_portControlMessage));
2069
2070 /* Only set baud rate if it's changed */
2071 if (p_priv->old_baud != p_priv->baud) {
2072 p_priv->old_baud = p_priv->baud;
2073 msg.setClocking = 0xff;
2074 if (d_details->calculate_baud_rate(port, p_priv->baud, d_details->baudclk,
2075 &msg.baudHi, &msg.baudLo, &msg.prescaler,
2076 device_port) == KEYSPAN_INVALID_BAUD_RATE) {
2077 dev_dbg(&port->dev, "%s - Invalid baud rate %d requested, using 9600.\n",
2078 __func__, p_priv->baud);
2079 msg.baudLo = 0;
2080 msg.baudHi = 125; /* Values for 9600 baud */
2081 msg.prescaler = 10;
2082 }
2083 msg.setPrescaler = 0xff;
2084 }
2085
2086 msg.lcr = (p_priv->cflag & CSTOPB) ? STOPBITS_678_2 : STOPBITS_5678_1;
2087 switch (p_priv->cflag & CSIZE) {
2088 case CS5:
2089 msg.lcr |= USA_DATABITS_5;
2090 break;
2091 case CS6:
2092 msg.lcr |= USA_DATABITS_6;
2093 break;
2094 case CS7:
2095 msg.lcr |= USA_DATABITS_7;
2096 break;
2097 case CS8:
2098 msg.lcr |= USA_DATABITS_8;
2099 break;
2100 }
2101 if (p_priv->cflag & PARENB) {
2102 /* note USA_PARITY_NONE == 0 */
2103 msg.lcr |= (p_priv->cflag & PARODD) ?
2104 USA_PARITY_ODD : USA_PARITY_EVEN;
2105 }
2106 msg.setLcr = 0xff;
2107
2108 msg.ctsFlowControl = (p_priv->flow_control == flow_cts);
2109 msg.xonFlowControl = 0;
2110 msg.setFlowControl = 0xff;
2111 msg.forwardingLength = 16;
2112 msg.xonChar = 17;
2113 msg.xoffChar = 19;
2114
2115 /* Opening port */
2116 if (reset_port == 1) {
2117 msg._txOn = 1;
2118 msg._txOff = 0;
2119 msg.txFlush = 0;
2120 msg.txBreak = 0;
2121 msg.rxOn = 1;
2122 msg.rxOff = 0;
2123 msg.rxFlush = 1;
2124 msg.rxForward = 0;
2125 msg.returnStatus = 0;
2126 msg.resetDataToggle = 0xff;
2127 }
2128
2129 /* Closing port */
2130 else if (reset_port == 2) {
2131 msg._txOn = 0;
2132 msg._txOff = 1;
2133 msg.txFlush = 0;
2134 msg.txBreak = 0;
2135 msg.rxOn = 0;
2136 msg.rxOff = 1;
2137 msg.rxFlush = 1;
2138 msg.rxForward = 0;
2139 msg.returnStatus = 0;
2140 msg.resetDataToggle = 0;
2141 }
2142
2143 /* Sending intermediate configs */
2144 else {
2145 msg._txOn = (!p_priv->break_on);
2146 msg._txOff = 0;
2147 msg.txFlush = 0;
2148 msg.txBreak = (p_priv->break_on);
2149 msg.rxOn = 0;
2150 msg.rxOff = 0;
2151 msg.rxFlush = 0;
2152 msg.rxForward = 0;
2153 msg.returnStatus = 0;
2154 msg.resetDataToggle = 0x0;
2155 }
2156
2157 /* Do handshaking outputs */
2158 msg.setTxTriState_setRts = 0xff;
2159 msg.txTriState_rts = p_priv->rts_state;
2160
2161 msg.setHskoa_setDtr = 0xff;
2162 msg.hskoa_dtr = p_priv->dtr_state;
2163
2164 p_priv->resend_cont = 0;
2165 memcpy(this_urb->transfer_buffer, &msg, sizeof(msg));
2166
2167 /* send the data out the device on control endpoint */
2168 this_urb->transfer_buffer_length = sizeof(msg);
2169
2170 err = usb_submit_urb(this_urb, GFP_ATOMIC);
2171 if (err != 0)
2172 dev_dbg(&port->dev, "%s - usb_submit_urb(setup) failed (%d)\n", __func__, err);
2173 return 0;
2174}
2175
2176static int keyspan_usa28_send_setup(struct usb_serial *serial,
2177 struct usb_serial_port *port,
2178 int reset_port)
2179{
2180 struct keyspan_usa28_portControlMessage msg;
2181 struct keyspan_serial_private *s_priv;
2182 struct keyspan_port_private *p_priv;
2183 const struct keyspan_device_details *d_details;
2184 struct urb *this_urb;
2185 int device_port, err;
2186
2187 s_priv = usb_get_serial_data(serial);
2188 p_priv = usb_get_serial_port_data(port);
2189 d_details = s_priv->device_details;
2190 device_port = port->port_number;
2191
2192 /* only do something if we have a bulk out endpoint */
2193 this_urb = p_priv->outcont_urb;
2194 if (this_urb == NULL) {
2195 dev_dbg(&port->dev, "%s - oops no urb.\n", __func__);
2196 return -1;
2197 }
2198
2199 /* Save reset port val for resend.
2200 Don't overwrite resend for open/close condition. */
2201 if ((reset_port + 1) > p_priv->resend_cont)
2202 p_priv->resend_cont = reset_port + 1;
2203 if (this_urb->status == -EINPROGRESS) {
2204 dev_dbg(&port->dev, "%s already writing\n", __func__);
2205 mdelay(5);
2206 return -1;
2207 }
2208
2209 memset(&msg, 0, sizeof(struct keyspan_usa28_portControlMessage));
2210
2211 msg.setBaudRate = 1;
2212 if (d_details->calculate_baud_rate(port, p_priv->baud, d_details->baudclk,
2213 &msg.baudHi, &msg.baudLo, NULL,
2214 device_port) == KEYSPAN_INVALID_BAUD_RATE) {
2215 dev_dbg(&port->dev, "%s - Invalid baud rate requested %d.\n",
2216 __func__, p_priv->baud);
2217 msg.baudLo = 0xff;
2218 msg.baudHi = 0xb2; /* Values for 9600 baud */
2219 }
2220
2221 /* If parity is enabled, we must calculate it ourselves. */
2222 msg.parity = 0; /* XXX for now */
2223
2224 msg.ctsFlowControl = (p_priv->flow_control == flow_cts);
2225 msg.xonFlowControl = 0;
2226
2227 /* Do handshaking outputs, DTR is inverted relative to RTS */
2228 msg.rts = p_priv->rts_state;
2229 msg.dtr = p_priv->dtr_state;
2230
2231 msg.forwardingLength = 16;
2232 msg.forwardMs = 10;
2233 msg.breakThreshold = 45;
2234 msg.xonChar = 17;
2235 msg.xoffChar = 19;
2236
2237 /*msg.returnStatus = 1;
2238 msg.resetDataToggle = 0xff;*/
2239 /* Opening port */
2240 if (reset_port == 1) {
2241 msg._txOn = 1;
2242 msg._txOff = 0;
2243 msg.txFlush = 0;
2244 msg.txForceXoff = 0;
2245 msg.txBreak = 0;
2246 msg.rxOn = 1;
2247 msg.rxOff = 0;
2248 msg.rxFlush = 1;
2249 msg.rxForward = 0;
2250 msg.returnStatus = 0;
2251 msg.resetDataToggle = 0xff;
2252 }
2253 /* Closing port */
2254 else if (reset_port == 2) {
2255 msg._txOn = 0;
2256 msg._txOff = 1;
2257 msg.txFlush = 0;
2258 msg.txForceXoff = 0;
2259 msg.txBreak = 0;
2260 msg.rxOn = 0;
2261 msg.rxOff = 1;
2262 msg.rxFlush = 1;
2263 msg.rxForward = 0;
2264 msg.returnStatus = 0;
2265 msg.resetDataToggle = 0;
2266 }
2267 /* Sending intermediate configs */
2268 else {
2269 msg._txOn = (!p_priv->break_on);
2270 msg._txOff = 0;
2271 msg.txFlush = 0;
2272 msg.txForceXoff = 0;
2273 msg.txBreak = (p_priv->break_on);
2274 msg.rxOn = 0;
2275 msg.rxOff = 0;
2276 msg.rxFlush = 0;
2277 msg.rxForward = 0;
2278 msg.returnStatus = 0;
2279 msg.resetDataToggle = 0x0;
2280 }
2281
2282 p_priv->resend_cont = 0;
2283 memcpy(this_urb->transfer_buffer, &msg, sizeof(msg));
2284
2285 /* send the data out the device on control endpoint */
2286 this_urb->transfer_buffer_length = sizeof(msg);
2287
2288 err = usb_submit_urb(this_urb, GFP_ATOMIC);
2289 if (err != 0)
2290 dev_dbg(&port->dev, "%s - usb_submit_urb(setup) failed\n", __func__);
2291
2292 return 0;
2293}
2294
2295static int keyspan_usa49_send_setup(struct usb_serial *serial,
2296 struct usb_serial_port *port,
2297 int reset_port)
2298{
2299 struct keyspan_usa49_portControlMessage msg;
2300 struct usb_ctrlrequest *dr = NULL;
2301 struct keyspan_serial_private *s_priv;
2302 struct keyspan_port_private *p_priv;
2303 const struct keyspan_device_details *d_details;
2304 struct urb *this_urb;
2305 int err, device_port;
2306
2307 s_priv = usb_get_serial_data(serial);
2308 p_priv = usb_get_serial_port_data(port);
2309 d_details = s_priv->device_details;
2310
2311 this_urb = s_priv->glocont_urb;
2312
2313 /* Work out which port within the device is being setup */
2314 device_port = port->port_number;
2315
2316 /* Make sure we have an urb then send the message */
2317 if (this_urb == NULL) {
2318 dev_dbg(&port->dev, "%s - oops no urb for port.\n", __func__);
2319 return -1;
2320 }
2321
2322 dev_dbg(&port->dev, "%s - endpoint %x (%d)\n",
2323 __func__, usb_pipeendpoint(this_urb->pipe), device_port);
2324
2325 /* Save reset port val for resend.
2326 Don't overwrite resend for open/close condition. */
2327 if ((reset_port + 1) > p_priv->resend_cont)
2328 p_priv->resend_cont = reset_port + 1;
2329
2330 if (this_urb->status == -EINPROGRESS) {
2331 /* dev_dbg(&port->dev, "%s - already writing\n", __func__); */
2332 mdelay(5);
2333 return -1;
2334 }
2335
2336 memset(&msg, 0, sizeof(struct keyspan_usa49_portControlMessage));
2337
2338 msg.portNumber = device_port;
2339
2340 /* Only set baud rate if it's changed */
2341 if (p_priv->old_baud != p_priv->baud) {
2342 p_priv->old_baud = p_priv->baud;
2343 msg.setClocking = 0xff;
2344 if (d_details->calculate_baud_rate(port, p_priv->baud, d_details->baudclk,
2345 &msg.baudHi, &msg.baudLo, &msg.prescaler,
2346 device_port) == KEYSPAN_INVALID_BAUD_RATE) {
2347 dev_dbg(&port->dev, "%s - Invalid baud rate %d requested, using 9600.\n",
2348 __func__, p_priv->baud);
2349 msg.baudLo = 0;
2350 msg.baudHi = 125; /* Values for 9600 baud */
2351 msg.prescaler = 10;
2352 }
2353 /* msg.setPrescaler = 0xff; */
2354 }
2355
2356 msg.lcr = (p_priv->cflag & CSTOPB) ? STOPBITS_678_2 : STOPBITS_5678_1;
2357 switch (p_priv->cflag & CSIZE) {
2358 case CS5:
2359 msg.lcr |= USA_DATABITS_5;
2360 break;
2361 case CS6:
2362 msg.lcr |= USA_DATABITS_6;
2363 break;
2364 case CS7:
2365 msg.lcr |= USA_DATABITS_7;
2366 break;
2367 case CS8:
2368 msg.lcr |= USA_DATABITS_8;
2369 break;
2370 }
2371 if (p_priv->cflag & PARENB) {
2372 /* note USA_PARITY_NONE == 0 */
2373 msg.lcr |= (p_priv->cflag & PARODD) ?
2374 USA_PARITY_ODD : USA_PARITY_EVEN;
2375 }
2376 msg.setLcr = 0xff;
2377
2378 msg.ctsFlowControl = (p_priv->flow_control == flow_cts);
2379 msg.xonFlowControl = 0;
2380 msg.setFlowControl = 0xff;
2381
2382 msg.forwardingLength = 16;
2383 msg.xonChar = 17;
2384 msg.xoffChar = 19;
2385
2386 /* Opening port */
2387 if (reset_port == 1) {
2388 msg._txOn = 1;
2389 msg._txOff = 0;
2390 msg.txFlush = 0;
2391 msg.txBreak = 0;
2392 msg.rxOn = 1;
2393 msg.rxOff = 0;
2394 msg.rxFlush = 1;
2395 msg.rxForward = 0;
2396 msg.returnStatus = 0;
2397 msg.resetDataToggle = 0xff;
2398 msg.enablePort = 1;
2399 msg.disablePort = 0;
2400 }
2401 /* Closing port */
2402 else if (reset_port == 2) {
2403 msg._txOn = 0;
2404 msg._txOff = 1;
2405 msg.txFlush = 0;
2406 msg.txBreak = 0;
2407 msg.rxOn = 0;
2408 msg.rxOff = 1;
2409 msg.rxFlush = 1;
2410 msg.rxForward = 0;
2411 msg.returnStatus = 0;
2412 msg.resetDataToggle = 0;
2413 msg.enablePort = 0;
2414 msg.disablePort = 1;
2415 }
2416 /* Sending intermediate configs */
2417 else {
2418 msg._txOn = (!p_priv->break_on);
2419 msg._txOff = 0;
2420 msg.txFlush = 0;
2421 msg.txBreak = (p_priv->break_on);
2422 msg.rxOn = 0;
2423 msg.rxOff = 0;
2424 msg.rxFlush = 0;
2425 msg.rxForward = 0;
2426 msg.returnStatus = 0;
2427 msg.resetDataToggle = 0x0;
2428 msg.enablePort = 0;
2429 msg.disablePort = 0;
2430 }
2431
2432 /* Do handshaking outputs */
2433 msg.setRts = 0xff;
2434 msg.rts = p_priv->rts_state;
2435
2436 msg.setDtr = 0xff;
2437 msg.dtr = p_priv->dtr_state;
2438
2439 p_priv->resend_cont = 0;
2440
2441 /* if the device is a 49wg, we send control message on usb
2442 control EP 0 */
2443
2444 if (d_details->product_id == keyspan_usa49wg_product_id) {
2445 dr = (void *)(s_priv->ctrl_buf);
2446 dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_OUT;
2447 dr->bRequest = 0xB0; /* 49wg control message */
2448 dr->wValue = 0;
2449 dr->wIndex = 0;
2450 dr->wLength = cpu_to_le16(sizeof(msg));
2451
2452 memcpy(s_priv->glocont_buf, &msg, sizeof(msg));
2453
2454 usb_fill_control_urb(this_urb, serial->dev,
2455 usb_sndctrlpipe(serial->dev, 0),
2456 (unsigned char *)dr, s_priv->glocont_buf,
2457 sizeof(msg), usa49_glocont_callback, serial);
2458
2459 } else {
2460 memcpy(this_urb->transfer_buffer, &msg, sizeof(msg));
2461
2462 /* send the data out the device on control endpoint */
2463 this_urb->transfer_buffer_length = sizeof(msg);
2464 }
2465 err = usb_submit_urb(this_urb, GFP_ATOMIC);
2466 if (err != 0)
2467 dev_dbg(&port->dev, "%s - usb_submit_urb(setup) failed (%d)\n", __func__, err);
2468
2469 return 0;
2470}
2471
2472static int keyspan_usa90_send_setup(struct usb_serial *serial,
2473 struct usb_serial_port *port,
2474 int reset_port)
2475{
2476 struct keyspan_usa90_portControlMessage msg;
2477 struct keyspan_serial_private *s_priv;
2478 struct keyspan_port_private *p_priv;
2479 const struct keyspan_device_details *d_details;
2480 struct urb *this_urb;
2481 int err;
2482 u8 prescaler;
2483
2484 s_priv = usb_get_serial_data(serial);
2485 p_priv = usb_get_serial_port_data(port);
2486 d_details = s_priv->device_details;
2487
2488 /* only do something if we have a bulk out endpoint */
2489 this_urb = p_priv->outcont_urb;
2490 if (this_urb == NULL) {
2491 dev_dbg(&port->dev, "%s - oops no urb.\n", __func__);
2492 return -1;
2493 }
2494
2495 /* Save reset port val for resend.
2496 Don't overwrite resend for open/close condition. */
2497 if ((reset_port + 1) > p_priv->resend_cont)
2498 p_priv->resend_cont = reset_port + 1;
2499 if (this_urb->status == -EINPROGRESS) {
2500 dev_dbg(&port->dev, "%s already writing\n", __func__);
2501 mdelay(5);
2502 return -1;
2503 }
2504
2505 memset(&msg, 0, sizeof(struct keyspan_usa90_portControlMessage));
2506
2507 /* Only set baud rate if it's changed */
2508 if (p_priv->old_baud != p_priv->baud) {
2509 p_priv->old_baud = p_priv->baud;
2510 msg.setClocking = 0x01;
2511 if (d_details->calculate_baud_rate(port, p_priv->baud, d_details->baudclk,
2512 &msg.baudHi, &msg.baudLo, &prescaler, 0) == KEYSPAN_INVALID_BAUD_RATE) {
2513 dev_dbg(&port->dev, "%s - Invalid baud rate %d requested, using 9600.\n",
2514 __func__, p_priv->baud);
2515 p_priv->baud = 9600;
2516 d_details->calculate_baud_rate(port, p_priv->baud, d_details->baudclk,
2517 &msg.baudHi, &msg.baudLo, &prescaler, 0);
2518 }
2519 msg.setRxMode = 1;
2520 msg.setTxMode = 1;
2521 }
2522
2523 /* modes must always be correctly specified */
2524 if (p_priv->baud > 57600) {
2525 msg.rxMode = RXMODE_DMA;
2526 msg.txMode = TXMODE_DMA;
2527 } else {
2528 msg.rxMode = RXMODE_BYHAND;
2529 msg.txMode = TXMODE_BYHAND;
2530 }
2531
2532 msg.lcr = (p_priv->cflag & CSTOPB) ? STOPBITS_678_2 : STOPBITS_5678_1;
2533 switch (p_priv->cflag & CSIZE) {
2534 case CS5:
2535 msg.lcr |= USA_DATABITS_5;
2536 break;
2537 case CS6:
2538 msg.lcr |= USA_DATABITS_6;
2539 break;
2540 case CS7:
2541 msg.lcr |= USA_DATABITS_7;
2542 break;
2543 case CS8:
2544 msg.lcr |= USA_DATABITS_8;
2545 break;
2546 }
2547 if (p_priv->cflag & PARENB) {
2548 /* note USA_PARITY_NONE == 0 */
2549 msg.lcr |= (p_priv->cflag & PARODD) ?
2550 USA_PARITY_ODD : USA_PARITY_EVEN;
2551 }
2552 if (p_priv->old_cflag != p_priv->cflag) {
2553 p_priv->old_cflag = p_priv->cflag;
2554 msg.setLcr = 0x01;
2555 }
2556
2557 if (p_priv->flow_control == flow_cts)
2558 msg.txFlowControl = TXFLOW_CTS;
2559 msg.setTxFlowControl = 0x01;
2560 msg.setRxFlowControl = 0x01;
2561
2562 msg.rxForwardingLength = 16;
2563 msg.rxForwardingTimeout = 16;
2564 msg.txAckSetting = 0;
2565 msg.xonChar = 17;
2566 msg.xoffChar = 19;
2567
2568 /* Opening port */
2569 if (reset_port == 1) {
2570 msg.portEnabled = 1;
2571 msg.rxFlush = 1;
2572 msg.txBreak = (p_priv->break_on);
2573 }
2574 /* Closing port */
2575 else if (reset_port == 2)
2576 msg.portEnabled = 0;
2577 /* Sending intermediate configs */
2578 else {
2579 msg.portEnabled = 1;
2580 msg.txBreak = (p_priv->break_on);
2581 }
2582
2583 /* Do handshaking outputs */
2584 msg.setRts = 0x01;
2585 msg.rts = p_priv->rts_state;
2586
2587 msg.setDtr = 0x01;
2588 msg.dtr = p_priv->dtr_state;
2589
2590 p_priv->resend_cont = 0;
2591 memcpy(this_urb->transfer_buffer, &msg, sizeof(msg));
2592
2593 /* send the data out the device on control endpoint */
2594 this_urb->transfer_buffer_length = sizeof(msg);
2595
2596 err = usb_submit_urb(this_urb, GFP_ATOMIC);
2597 if (err != 0)
2598 dev_dbg(&port->dev, "%s - usb_submit_urb(setup) failed (%d)\n", __func__, err);
2599 return 0;
2600}
2601
2602static int keyspan_usa67_send_setup(struct usb_serial *serial,
2603 struct usb_serial_port *port,
2604 int reset_port)
2605{
2606 struct keyspan_usa67_portControlMessage msg;
2607 struct keyspan_serial_private *s_priv;
2608 struct keyspan_port_private *p_priv;
2609 const struct keyspan_device_details *d_details;
2610 struct urb *this_urb;
2611 int err, device_port;
2612
2613 s_priv = usb_get_serial_data(serial);
2614 p_priv = usb_get_serial_port_data(port);
2615 d_details = s_priv->device_details;
2616
2617 this_urb = s_priv->glocont_urb;
2618
2619 /* Work out which port within the device is being setup */
2620 device_port = port->port_number;
2621
2622 /* Make sure we have an urb then send the message */
2623 if (this_urb == NULL) {
2624 dev_dbg(&port->dev, "%s - oops no urb for port.\n", __func__);
2625 return -1;
2626 }
2627
2628 /* Save reset port val for resend.
2629 Don't overwrite resend for open/close condition. */
2630 if ((reset_port + 1) > p_priv->resend_cont)
2631 p_priv->resend_cont = reset_port + 1;
2632 if (this_urb->status == -EINPROGRESS) {
2633 /* dev_dbg(&port->dev, "%s - already writing\n", __func__); */
2634 mdelay(5);
2635 return -1;
2636 }
2637
2638 memset(&msg, 0, sizeof(struct keyspan_usa67_portControlMessage));
2639
2640 msg.port = device_port;
2641
2642 /* Only set baud rate if it's changed */
2643 if (p_priv->old_baud != p_priv->baud) {
2644 p_priv->old_baud = p_priv->baud;
2645 msg.setClocking = 0xff;
2646 if (d_details->calculate_baud_rate(port, p_priv->baud, d_details->baudclk,
2647 &msg.baudHi, &msg.baudLo, &msg.prescaler,
2648 device_port) == KEYSPAN_INVALID_BAUD_RATE) {
2649 dev_dbg(&port->dev, "%s - Invalid baud rate %d requested, using 9600.\n",
2650 __func__, p_priv->baud);
2651 msg.baudLo = 0;
2652 msg.baudHi = 125; /* Values for 9600 baud */
2653 msg.prescaler = 10;
2654 }
2655 msg.setPrescaler = 0xff;
2656 }
2657
2658 msg.lcr = (p_priv->cflag & CSTOPB) ? STOPBITS_678_2 : STOPBITS_5678_1;
2659 switch (p_priv->cflag & CSIZE) {
2660 case CS5:
2661 msg.lcr |= USA_DATABITS_5;
2662 break;
2663 case CS6:
2664 msg.lcr |= USA_DATABITS_6;
2665 break;
2666 case CS7:
2667 msg.lcr |= USA_DATABITS_7;
2668 break;
2669 case CS8:
2670 msg.lcr |= USA_DATABITS_8;
2671 break;
2672 }
2673 if (p_priv->cflag & PARENB) {
2674 /* note USA_PARITY_NONE == 0 */
2675 msg.lcr |= (p_priv->cflag & PARODD) ?
2676 USA_PARITY_ODD : USA_PARITY_EVEN;
2677 }
2678 msg.setLcr = 0xff;
2679
2680 msg.ctsFlowControl = (p_priv->flow_control == flow_cts);
2681 msg.xonFlowControl = 0;
2682 msg.setFlowControl = 0xff;
2683 msg.forwardingLength = 16;
2684 msg.xonChar = 17;
2685 msg.xoffChar = 19;
2686
2687 if (reset_port == 1) {
2688 /* Opening port */
2689 msg._txOn = 1;
2690 msg._txOff = 0;
2691 msg.txFlush = 0;
2692 msg.txBreak = 0;
2693 msg.rxOn = 1;
2694 msg.rxOff = 0;
2695 msg.rxFlush = 1;
2696 msg.rxForward = 0;
2697 msg.returnStatus = 0;
2698 msg.resetDataToggle = 0xff;
2699 } else if (reset_port == 2) {
2700 /* Closing port */
2701 msg._txOn = 0;
2702 msg._txOff = 1;
2703 msg.txFlush = 0;
2704 msg.txBreak = 0;
2705 msg.rxOn = 0;
2706 msg.rxOff = 1;
2707 msg.rxFlush = 1;
2708 msg.rxForward = 0;
2709 msg.returnStatus = 0;
2710 msg.resetDataToggle = 0;
2711 } else {
2712 /* Sending intermediate configs */
2713 msg._txOn = (!p_priv->break_on);
2714 msg._txOff = 0;
2715 msg.txFlush = 0;
2716 msg.txBreak = (p_priv->break_on);
2717 msg.rxOn = 0;
2718 msg.rxOff = 0;
2719 msg.rxFlush = 0;
2720 msg.rxForward = 0;
2721 msg.returnStatus = 0;
2722 msg.resetDataToggle = 0x0;
2723 }
2724
2725 /* Do handshaking outputs */
2726 msg.setTxTriState_setRts = 0xff;
2727 msg.txTriState_rts = p_priv->rts_state;
2728
2729 msg.setHskoa_setDtr = 0xff;
2730 msg.hskoa_dtr = p_priv->dtr_state;
2731
2732 p_priv->resend_cont = 0;
2733
2734 memcpy(this_urb->transfer_buffer, &msg, sizeof(msg));
2735
2736 /* send the data out the device on control endpoint */
2737 this_urb->transfer_buffer_length = sizeof(msg);
2738
2739 err = usb_submit_urb(this_urb, GFP_ATOMIC);
2740 if (err != 0)
2741 dev_dbg(&port->dev, "%s - usb_submit_urb(setup) failed (%d)\n", __func__, err);
2742 return 0;
2743}
2744
2745static void keyspan_send_setup(struct usb_serial_port *port, int reset_port)
2746{
2747 struct usb_serial *serial = port->serial;
2748 struct keyspan_serial_private *s_priv;
2749 const struct keyspan_device_details *d_details;
2750
2751 s_priv = usb_get_serial_data(serial);
2752 d_details = s_priv->device_details;
2753
2754 switch (d_details->msg_format) {
2755 case msg_usa26:
2756 keyspan_usa26_send_setup(serial, port, reset_port);
2757 break;
2758 case msg_usa28:
2759 keyspan_usa28_send_setup(serial, port, reset_port);
2760 break;
2761 case msg_usa49:
2762 keyspan_usa49_send_setup(serial, port, reset_port);
2763 break;
2764 case msg_usa90:
2765 keyspan_usa90_send_setup(serial, port, reset_port);
2766 break;
2767 case msg_usa67:
2768 keyspan_usa67_send_setup(serial, port, reset_port);
2769 break;
2770 }
2771}
2772
2773
2774/* Gets called by the "real" driver (ie once firmware is loaded
2775 and renumeration has taken place. */
2776static int keyspan_startup(struct usb_serial *serial)
2777{
2778 int i, err;
2779 struct keyspan_serial_private *s_priv;
2780 const struct keyspan_device_details *d_details;
2781
2782 for (i = 0; (d_details = keyspan_devices[i]) != NULL; ++i)
2783 if (d_details->product_id ==
2784 le16_to_cpu(serial->dev->descriptor.idProduct))
2785 break;
2786 if (d_details == NULL) {
2787 dev_err(&serial->dev->dev, "%s - unknown product id %x\n",
2788 __func__, le16_to_cpu(serial->dev->descriptor.idProduct));
2789 return -ENODEV;
2790 }
2791
2792 /* Setup private data for serial driver */
2793 s_priv = kzalloc(sizeof(struct keyspan_serial_private), GFP_KERNEL);
2794 if (!s_priv)
2795 return -ENOMEM;
2796
2797 s_priv->instat_buf = kzalloc(INSTAT_BUFLEN, GFP_KERNEL);
2798 if (!s_priv->instat_buf)
2799 goto err_instat_buf;
2800
2801 s_priv->indat_buf = kzalloc(INDAT49W_BUFLEN, GFP_KERNEL);
2802 if (!s_priv->indat_buf)
2803 goto err_indat_buf;
2804
2805 s_priv->glocont_buf = kzalloc(GLOCONT_BUFLEN, GFP_KERNEL);
2806 if (!s_priv->glocont_buf)
2807 goto err_glocont_buf;
2808
2809 s_priv->ctrl_buf = kzalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL);
2810 if (!s_priv->ctrl_buf)
2811 goto err_ctrl_buf;
2812
2813 s_priv->device_details = d_details;
2814 usb_set_serial_data(serial, s_priv);
2815
2816 keyspan_setup_urbs(serial);
2817
2818 if (s_priv->instat_urb != NULL) {
2819 err = usb_submit_urb(s_priv->instat_urb, GFP_KERNEL);
2820 if (err != 0)
2821 dev_dbg(&serial->dev->dev, "%s - submit instat urb failed %d\n", __func__, err);
2822 }
2823 if (s_priv->indat_urb != NULL) {
2824 err = usb_submit_urb(s_priv->indat_urb, GFP_KERNEL);
2825 if (err != 0)
2826 dev_dbg(&serial->dev->dev, "%s - submit indat urb failed %d\n", __func__, err);
2827 }
2828
2829 return 0;
2830
2831err_ctrl_buf:
2832 kfree(s_priv->glocont_buf);
2833err_glocont_buf:
2834 kfree(s_priv->indat_buf);
2835err_indat_buf:
2836 kfree(s_priv->instat_buf);
2837err_instat_buf:
2838 kfree(s_priv);
2839
2840 return -ENOMEM;
2841}
2842
2843static void keyspan_disconnect(struct usb_serial *serial)
2844{
2845 struct keyspan_serial_private *s_priv;
2846
2847 s_priv = usb_get_serial_data(serial);
2848
2849 usb_kill_urb(s_priv->instat_urb);
2850 usb_kill_urb(s_priv->glocont_urb);
2851 usb_kill_urb(s_priv->indat_urb);
2852}
2853
2854static void keyspan_release(struct usb_serial *serial)
2855{
2856 struct keyspan_serial_private *s_priv;
2857
2858 s_priv = usb_get_serial_data(serial);
2859
2860 /* Make sure to unlink the URBs submitted in attach. */
2861 usb_kill_urb(s_priv->instat_urb);
2862 usb_kill_urb(s_priv->indat_urb);
2863
2864 usb_free_urb(s_priv->instat_urb);
2865 usb_free_urb(s_priv->indat_urb);
2866 usb_free_urb(s_priv->glocont_urb);
2867
2868 kfree(s_priv->ctrl_buf);
2869 kfree(s_priv->glocont_buf);
2870 kfree(s_priv->indat_buf);
2871 kfree(s_priv->instat_buf);
2872
2873 kfree(s_priv);
2874}
2875
2876static int keyspan_port_probe(struct usb_serial_port *port)
2877{
2878 struct usb_serial *serial = port->serial;
2879 struct keyspan_serial_private *s_priv;
2880 struct keyspan_port_private *p_priv;
2881 const struct keyspan_device_details *d_details;
2882 struct callbacks *cback;
2883 int endp;
2884 int port_num;
2885 int i;
2886
2887 s_priv = usb_get_serial_data(serial);
2888 d_details = s_priv->device_details;
2889
2890 p_priv = kzalloc(sizeof(*p_priv), GFP_KERNEL);
2891 if (!p_priv)
2892 return -ENOMEM;
2893
2894 for (i = 0; i < ARRAY_SIZE(p_priv->in_buffer); ++i) {
2895 p_priv->in_buffer[i] = kzalloc(IN_BUFLEN, GFP_KERNEL);
2896 if (!p_priv->in_buffer[i])
2897 goto err_free_in_buffer;
2898 }
2899
2900 for (i = 0; i < ARRAY_SIZE(p_priv->out_buffer); ++i) {
2901 p_priv->out_buffer[i] = kzalloc(OUT_BUFLEN, GFP_KERNEL);
2902 if (!p_priv->out_buffer[i])
2903 goto err_free_out_buffer;
2904 }
2905
2906 p_priv->inack_buffer = kzalloc(INACK_BUFLEN, GFP_KERNEL);
2907 if (!p_priv->inack_buffer)
2908 goto err_free_out_buffer;
2909
2910 p_priv->outcont_buffer = kzalloc(OUTCONT_BUFLEN, GFP_KERNEL);
2911 if (!p_priv->outcont_buffer)
2912 goto err_free_inack_buffer;
2913
2914 p_priv->device_details = d_details;
2915
2916 /* Setup values for the various callback routines */
2917 cback = &keyspan_callbacks[d_details->msg_format];
2918
2919 port_num = port->port_number;
2920
2921 /* Do indat endpoints first, once for each flip */
2922 endp = d_details->indat_endpoints[port_num];
2923 for (i = 0; i <= d_details->indat_endp_flip; ++i, ++endp) {
2924 p_priv->in_urbs[i] = keyspan_setup_urb(serial, endp,
2925 USB_DIR_IN, port,
2926 p_priv->in_buffer[i],
2927 IN_BUFLEN,
2928 cback->indat_callback);
2929 }
2930 /* outdat endpoints also have flip */
2931 endp = d_details->outdat_endpoints[port_num];
2932 for (i = 0; i <= d_details->outdat_endp_flip; ++i, ++endp) {
2933 p_priv->out_urbs[i] = keyspan_setup_urb(serial, endp,
2934 USB_DIR_OUT, port,
2935 p_priv->out_buffer[i],
2936 OUT_BUFLEN,
2937 cback->outdat_callback);
2938 }
2939 /* inack endpoint */
2940 p_priv->inack_urb = keyspan_setup_urb(serial,
2941 d_details->inack_endpoints[port_num],
2942 USB_DIR_IN, port,
2943 p_priv->inack_buffer,
2944 INACK_BUFLEN,
2945 cback->inack_callback);
2946 /* outcont endpoint */
2947 p_priv->outcont_urb = keyspan_setup_urb(serial,
2948 d_details->outcont_endpoints[port_num],
2949 USB_DIR_OUT, port,
2950 p_priv->outcont_buffer,
2951 OUTCONT_BUFLEN,
2952 cback->outcont_callback);
2953
2954 usb_set_serial_port_data(port, p_priv);
2955
2956 return 0;
2957
2958err_free_inack_buffer:
2959 kfree(p_priv->inack_buffer);
2960err_free_out_buffer:
2961 for (i = 0; i < ARRAY_SIZE(p_priv->out_buffer); ++i)
2962 kfree(p_priv->out_buffer[i]);
2963err_free_in_buffer:
2964 for (i = 0; i < ARRAY_SIZE(p_priv->in_buffer); ++i)
2965 kfree(p_priv->in_buffer[i]);
2966 kfree(p_priv);
2967
2968 return -ENOMEM;
2969}
2970
2971static void keyspan_port_remove(struct usb_serial_port *port)
2972{
2973 struct keyspan_port_private *p_priv;
2974 int i;
2975
2976 p_priv = usb_get_serial_port_data(port);
2977
2978 usb_kill_urb(p_priv->inack_urb);
2979 usb_kill_urb(p_priv->outcont_urb);
2980 for (i = 0; i < 2; i++) {
2981 usb_kill_urb(p_priv->in_urbs[i]);
2982 usb_kill_urb(p_priv->out_urbs[i]);
2983 }
2984
2985 usb_free_urb(p_priv->inack_urb);
2986 usb_free_urb(p_priv->outcont_urb);
2987 for (i = 0; i < 2; i++) {
2988 usb_free_urb(p_priv->in_urbs[i]);
2989 usb_free_urb(p_priv->out_urbs[i]);
2990 }
2991
2992 kfree(p_priv->outcont_buffer);
2993 kfree(p_priv->inack_buffer);
2994 for (i = 0; i < ARRAY_SIZE(p_priv->out_buffer); ++i)
2995 kfree(p_priv->out_buffer[i]);
2996 for (i = 0; i < ARRAY_SIZE(p_priv->in_buffer); ++i)
2997 kfree(p_priv->in_buffer[i]);
2998
2999 kfree(p_priv);
3000}
3001
3002/* Structs for the devices, pre and post renumeration. */
3003static struct usb_serial_driver keyspan_pre_device = {
3004 .driver = {
3005 .owner = THIS_MODULE,
3006 .name = "keyspan_no_firm",
3007 },
3008 .description = "Keyspan - (without firmware)",
3009 .id_table = keyspan_pre_ids,
3010 .num_ports = 1,
3011 .attach = keyspan_fake_startup,
3012};
3013
3014static struct usb_serial_driver keyspan_1port_device = {
3015 .driver = {
3016 .owner = THIS_MODULE,
3017 .name = "keyspan_1",
3018 },
3019 .description = "Keyspan 1 port adapter",
3020 .id_table = keyspan_1port_ids,
3021 .num_ports = 1,
3022 .open = keyspan_open,
3023 .close = keyspan_close,
3024 .dtr_rts = keyspan_dtr_rts,
3025 .write = keyspan_write,
3026 .write_room = keyspan_write_room,
3027 .set_termios = keyspan_set_termios,
3028 .break_ctl = keyspan_break_ctl,
3029 .tiocmget = keyspan_tiocmget,
3030 .tiocmset = keyspan_tiocmset,
3031 .attach = keyspan_startup,
3032 .disconnect = keyspan_disconnect,
3033 .release = keyspan_release,
3034 .port_probe = keyspan_port_probe,
3035 .port_remove = keyspan_port_remove,
3036};
3037
3038static struct usb_serial_driver keyspan_2port_device = {
3039 .driver = {
3040 .owner = THIS_MODULE,
3041 .name = "keyspan_2",
3042 },
3043 .description = "Keyspan 2 port adapter",
3044 .id_table = keyspan_2port_ids,
3045 .num_ports = 2,
3046 .open = keyspan_open,
3047 .close = keyspan_close,
3048 .dtr_rts = keyspan_dtr_rts,
3049 .write = keyspan_write,
3050 .write_room = keyspan_write_room,
3051 .set_termios = keyspan_set_termios,
3052 .break_ctl = keyspan_break_ctl,
3053 .tiocmget = keyspan_tiocmget,
3054 .tiocmset = keyspan_tiocmset,
3055 .attach = keyspan_startup,
3056 .disconnect = keyspan_disconnect,
3057 .release = keyspan_release,
3058 .port_probe = keyspan_port_probe,
3059 .port_remove = keyspan_port_remove,
3060};
3061
3062static struct usb_serial_driver keyspan_4port_device = {
3063 .driver = {
3064 .owner = THIS_MODULE,
3065 .name = "keyspan_4",
3066 },
3067 .description = "Keyspan 4 port adapter",
3068 .id_table = keyspan_4port_ids,
3069 .num_ports = 4,
3070 .open = keyspan_open,
3071 .close = keyspan_close,
3072 .dtr_rts = keyspan_dtr_rts,
3073 .write = keyspan_write,
3074 .write_room = keyspan_write_room,
3075 .set_termios = keyspan_set_termios,
3076 .break_ctl = keyspan_break_ctl,
3077 .tiocmget = keyspan_tiocmget,
3078 .tiocmset = keyspan_tiocmset,
3079 .attach = keyspan_startup,
3080 .disconnect = keyspan_disconnect,
3081 .release = keyspan_release,
3082 .port_probe = keyspan_port_probe,
3083 .port_remove = keyspan_port_remove,
3084};
3085
3086static struct usb_serial_driver * const serial_drivers[] = {
3087 &keyspan_pre_device, &keyspan_1port_device,
3088 &keyspan_2port_device, &keyspan_4port_device, NULL
3089};
3090
3091module_usb_serial_driver(serial_drivers, keyspan_ids_combined);
3092
3093MODULE_AUTHOR(DRIVER_AUTHOR);
3094MODULE_DESCRIPTION(DRIVER_DESC);
3095MODULE_LICENSE("GPL");
3096
3097MODULE_FIRMWARE("keyspan/usa28.fw");
3098MODULE_FIRMWARE("keyspan/usa28x.fw");
3099MODULE_FIRMWARE("keyspan/usa28xa.fw");
3100MODULE_FIRMWARE("keyspan/usa28xb.fw");
3101MODULE_FIRMWARE("keyspan/usa19.fw");
3102MODULE_FIRMWARE("keyspan/usa19qi.fw");
3103MODULE_FIRMWARE("keyspan/mpr.fw");
3104MODULE_FIRMWARE("keyspan/usa19qw.fw");
3105MODULE_FIRMWARE("keyspan/usa18x.fw");
3106MODULE_FIRMWARE("keyspan/usa19w.fw");
3107MODULE_FIRMWARE("keyspan/usa49w.fw");
3108MODULE_FIRMWARE("keyspan/usa49wlc.fw");
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 Keyspan USB to Serial Converter driver
4
5 (C) Copyright (C) 2000-2001 Hugh Blemings <hugh@blemings.org>
6 (C) Copyright (C) 2002 Greg Kroah-Hartman <greg@kroah.com>
7
8 See http://blemings.org/hugh/keyspan.html for more information.
9
10 Code in this driver inspired by and in a number of places taken
11 from Brian Warner's original Keyspan-PDA driver.
12
13 This driver has been put together with the support of Innosys, Inc.
14 and Keyspan, Inc the manufacturers of the Keyspan USB-serial products.
15 Thanks Guys :)
16
17 Thanks to Paulus for miscellaneous tidy ups, some largish chunks
18 of much nicer and/or completely new code and (perhaps most uniquely)
19 having the patience to sit down and explain why and where he'd changed
20 stuff.
21
22 Tip 'o the hat to IBM (and previously Linuxcare :) for supporting
23 staff in their work on open source projects.
24*/
25
26
27#include <linux/kernel.h>
28#include <linux/jiffies.h>
29#include <linux/errno.h>
30#include <linux/slab.h>
31#include <linux/tty.h>
32#include <linux/tty_driver.h>
33#include <linux/tty_flip.h>
34#include <linux/module.h>
35#include <linux/spinlock.h>
36#include <linux/uaccess.h>
37#include <linux/usb.h>
38#include <linux/usb/serial.h>
39#include <linux/usb/ezusb.h>
40
41#define DRIVER_AUTHOR "Hugh Blemings <hugh@misc.nu"
42#define DRIVER_DESC "Keyspan USB to Serial Converter Driver"
43
44static void keyspan_send_setup(struct usb_serial_port *port, int reset_port);
45
46static int keyspan_usa19_calc_baud(struct usb_serial_port *port,
47 u32 baud_rate, u32 baudclk,
48 u8 *rate_hi, u8 *rate_low,
49 u8 *prescaler, int portnum);
50static int keyspan_usa19w_calc_baud(struct usb_serial_port *port,
51 u32 baud_rate, u32 baudclk,
52 u8 *rate_hi, u8 *rate_low,
53 u8 *prescaler, int portnum);
54static int keyspan_usa28_calc_baud(struct usb_serial_port *port,
55 u32 baud_rate, u32 baudclk,
56 u8 *rate_hi, u8 *rate_low,
57 u8 *prescaler, int portnum);
58static int keyspan_usa19hs_calc_baud(struct usb_serial_port *port,
59 u32 baud_rate, u32 baudclk,
60 u8 *rate_hi, u8 *rate_low,
61 u8 *prescaler, int portnum);
62
63static int keyspan_usa28_send_setup(struct usb_serial *serial,
64 struct usb_serial_port *port,
65 int reset_port);
66static int keyspan_usa26_send_setup(struct usb_serial *serial,
67 struct usb_serial_port *port,
68 int reset_port);
69static int keyspan_usa49_send_setup(struct usb_serial *serial,
70 struct usb_serial_port *port,
71 int reset_port);
72static int keyspan_usa90_send_setup(struct usb_serial *serial,
73 struct usb_serial_port *port,
74 int reset_port);
75static int keyspan_usa67_send_setup(struct usb_serial *serial,
76 struct usb_serial_port *port,
77 int reset_port);
78
79/* Values used for baud rate calculation - device specific */
80#define KEYSPAN_INVALID_BAUD_RATE (-1)
81#define KEYSPAN_BAUD_RATE_OK (0)
82#define KEYSPAN_USA18X_BAUDCLK (12000000L) /* a guess */
83#define KEYSPAN_USA19_BAUDCLK (12000000L)
84#define KEYSPAN_USA19W_BAUDCLK (24000000L)
85#define KEYSPAN_USA19HS_BAUDCLK (14769231L)
86#define KEYSPAN_USA28_BAUDCLK (1843200L)
87#define KEYSPAN_USA28X_BAUDCLK (12000000L)
88#define KEYSPAN_USA49W_BAUDCLK (48000000L)
89
90/* Some constants used to characterise each device. */
91#define KEYSPAN_MAX_NUM_PORTS (4)
92#define KEYSPAN_MAX_FLIPS (2)
93
94/*
95 * Device info for the Keyspan serial converter, used by the overall
96 * usb-serial probe function.
97 */
98#define KEYSPAN_VENDOR_ID (0x06cd)
99
100/* Product IDs for the products supported, pre-renumeration */
101#define keyspan_usa18x_pre_product_id 0x0105
102#define keyspan_usa19_pre_product_id 0x0103
103#define keyspan_usa19qi_pre_product_id 0x010b
104#define keyspan_mpr_pre_product_id 0x011b
105#define keyspan_usa19qw_pre_product_id 0x0118
106#define keyspan_usa19w_pre_product_id 0x0106
107#define keyspan_usa28_pre_product_id 0x0101
108#define keyspan_usa28x_pre_product_id 0x0102
109#define keyspan_usa28xa_pre_product_id 0x0114
110#define keyspan_usa28xb_pre_product_id 0x0113
111#define keyspan_usa49w_pre_product_id 0x0109
112#define keyspan_usa49wlc_pre_product_id 0x011a
113
114/*
115 * Product IDs post-renumeration. Note that the 28x and 28xb have the same
116 * id's post-renumeration but behave identically so it's not an issue. As
117 * such, the 28xb is not listed in any of the device tables.
118 */
119#define keyspan_usa18x_product_id 0x0112
120#define keyspan_usa19_product_id 0x0107
121#define keyspan_usa19qi_product_id 0x010c
122#define keyspan_usa19hs_product_id 0x0121
123#define keyspan_mpr_product_id 0x011c
124#define keyspan_usa19qw_product_id 0x0119
125#define keyspan_usa19w_product_id 0x0108
126#define keyspan_usa28_product_id 0x010f
127#define keyspan_usa28x_product_id 0x0110
128#define keyspan_usa28xa_product_id 0x0115
129#define keyspan_usa28xb_product_id 0x0110
130#define keyspan_usa28xg_product_id 0x0135
131#define keyspan_usa49w_product_id 0x010a
132#define keyspan_usa49wlc_product_id 0x012a
133#define keyspan_usa49wg_product_id 0x0131
134
135struct keyspan_device_details {
136 /* product ID value */
137 int product_id;
138
139 enum {msg_usa26, msg_usa28, msg_usa49, msg_usa90, msg_usa67} msg_format;
140
141 /* Number of physical ports */
142 int num_ports;
143
144 /* 1 if endpoint flipping used on input, 0 if not */
145 int indat_endp_flip;
146
147 /* 1 if endpoint flipping used on output, 0 if not */
148 int outdat_endp_flip;
149
150 /*
151 * Table mapping input data endpoint IDs to physical port
152 * number and flip if used
153 */
154 int indat_endpoints[KEYSPAN_MAX_NUM_PORTS];
155
156 /* Same for output endpoints */
157 int outdat_endpoints[KEYSPAN_MAX_NUM_PORTS];
158
159 /* Input acknowledge endpoints */
160 int inack_endpoints[KEYSPAN_MAX_NUM_PORTS];
161
162 /* Output control endpoints */
163 int outcont_endpoints[KEYSPAN_MAX_NUM_PORTS];
164
165 /* Endpoint used for input status */
166 int instat_endpoint;
167
168 /* Endpoint used for input data 49WG only */
169 int indat_endpoint;
170
171 /* Endpoint used for global control functions */
172 int glocont_endpoint;
173
174 int (*calculate_baud_rate)(struct usb_serial_port *port,
175 u32 baud_rate, u32 baudclk,
176 u8 *rate_hi, u8 *rate_low, u8 *prescaler,
177 int portnum);
178 u32 baudclk;
179};
180
181/*
182 * Now for each device type we setup the device detail structure with the
183 * appropriate information (provided in Keyspan's documentation)
184 */
185
186static const struct keyspan_device_details usa18x_device_details = {
187 .product_id = keyspan_usa18x_product_id,
188 .msg_format = msg_usa26,
189 .num_ports = 1,
190 .indat_endp_flip = 0,
191 .outdat_endp_flip = 1,
192 .indat_endpoints = {0x81},
193 .outdat_endpoints = {0x01},
194 .inack_endpoints = {0x85},
195 .outcont_endpoints = {0x05},
196 .instat_endpoint = 0x87,
197 .indat_endpoint = -1,
198 .glocont_endpoint = 0x07,
199 .calculate_baud_rate = keyspan_usa19w_calc_baud,
200 .baudclk = KEYSPAN_USA18X_BAUDCLK,
201};
202
203static const struct keyspan_device_details usa19_device_details = {
204 .product_id = keyspan_usa19_product_id,
205 .msg_format = msg_usa28,
206 .num_ports = 1,
207 .indat_endp_flip = 1,
208 .outdat_endp_flip = 1,
209 .indat_endpoints = {0x81},
210 .outdat_endpoints = {0x01},
211 .inack_endpoints = {0x83},
212 .outcont_endpoints = {0x03},
213 .instat_endpoint = 0x84,
214 .indat_endpoint = -1,
215 .glocont_endpoint = -1,
216 .calculate_baud_rate = keyspan_usa19_calc_baud,
217 .baudclk = KEYSPAN_USA19_BAUDCLK,
218};
219
220static const struct keyspan_device_details usa19qi_device_details = {
221 .product_id = keyspan_usa19qi_product_id,
222 .msg_format = msg_usa28,
223 .num_ports = 1,
224 .indat_endp_flip = 1,
225 .outdat_endp_flip = 1,
226 .indat_endpoints = {0x81},
227 .outdat_endpoints = {0x01},
228 .inack_endpoints = {0x83},
229 .outcont_endpoints = {0x03},
230 .instat_endpoint = 0x84,
231 .indat_endpoint = -1,
232 .glocont_endpoint = -1,
233 .calculate_baud_rate = keyspan_usa28_calc_baud,
234 .baudclk = KEYSPAN_USA19_BAUDCLK,
235};
236
237static const struct keyspan_device_details mpr_device_details = {
238 .product_id = keyspan_mpr_product_id,
239 .msg_format = msg_usa28,
240 .num_ports = 1,
241 .indat_endp_flip = 1,
242 .outdat_endp_flip = 1,
243 .indat_endpoints = {0x81},
244 .outdat_endpoints = {0x01},
245 .inack_endpoints = {0x83},
246 .outcont_endpoints = {0x03},
247 .instat_endpoint = 0x84,
248 .indat_endpoint = -1,
249 .glocont_endpoint = -1,
250 .calculate_baud_rate = keyspan_usa28_calc_baud,
251 .baudclk = KEYSPAN_USA19_BAUDCLK,
252};
253
254static const struct keyspan_device_details usa19qw_device_details = {
255 .product_id = keyspan_usa19qw_product_id,
256 .msg_format = msg_usa26,
257 .num_ports = 1,
258 .indat_endp_flip = 0,
259 .outdat_endp_flip = 1,
260 .indat_endpoints = {0x81},
261 .outdat_endpoints = {0x01},
262 .inack_endpoints = {0x85},
263 .outcont_endpoints = {0x05},
264 .instat_endpoint = 0x87,
265 .indat_endpoint = -1,
266 .glocont_endpoint = 0x07,
267 .calculate_baud_rate = keyspan_usa19w_calc_baud,
268 .baudclk = KEYSPAN_USA19W_BAUDCLK,
269};
270
271static const struct keyspan_device_details usa19w_device_details = {
272 .product_id = keyspan_usa19w_product_id,
273 .msg_format = msg_usa26,
274 .num_ports = 1,
275 .indat_endp_flip = 0,
276 .outdat_endp_flip = 1,
277 .indat_endpoints = {0x81},
278 .outdat_endpoints = {0x01},
279 .inack_endpoints = {0x85},
280 .outcont_endpoints = {0x05},
281 .instat_endpoint = 0x87,
282 .indat_endpoint = -1,
283 .glocont_endpoint = 0x07,
284 .calculate_baud_rate = keyspan_usa19w_calc_baud,
285 .baudclk = KEYSPAN_USA19W_BAUDCLK,
286};
287
288static const struct keyspan_device_details usa19hs_device_details = {
289 .product_id = keyspan_usa19hs_product_id,
290 .msg_format = msg_usa90,
291 .num_ports = 1,
292 .indat_endp_flip = 0,
293 .outdat_endp_flip = 0,
294 .indat_endpoints = {0x81},
295 .outdat_endpoints = {0x01},
296 .inack_endpoints = {-1},
297 .outcont_endpoints = {0x02},
298 .instat_endpoint = 0x82,
299 .indat_endpoint = -1,
300 .glocont_endpoint = -1,
301 .calculate_baud_rate = keyspan_usa19hs_calc_baud,
302 .baudclk = KEYSPAN_USA19HS_BAUDCLK,
303};
304
305static const struct keyspan_device_details usa28_device_details = {
306 .product_id = keyspan_usa28_product_id,
307 .msg_format = msg_usa28,
308 .num_ports = 2,
309 .indat_endp_flip = 1,
310 .outdat_endp_flip = 1,
311 .indat_endpoints = {0x81, 0x83},
312 .outdat_endpoints = {0x01, 0x03},
313 .inack_endpoints = {0x85, 0x86},
314 .outcont_endpoints = {0x05, 0x06},
315 .instat_endpoint = 0x87,
316 .indat_endpoint = -1,
317 .glocont_endpoint = 0x07,
318 .calculate_baud_rate = keyspan_usa28_calc_baud,
319 .baudclk = KEYSPAN_USA28_BAUDCLK,
320};
321
322static const struct keyspan_device_details usa28x_device_details = {
323 .product_id = keyspan_usa28x_product_id,
324 .msg_format = msg_usa26,
325 .num_ports = 2,
326 .indat_endp_flip = 0,
327 .outdat_endp_flip = 1,
328 .indat_endpoints = {0x81, 0x83},
329 .outdat_endpoints = {0x01, 0x03},
330 .inack_endpoints = {0x85, 0x86},
331 .outcont_endpoints = {0x05, 0x06},
332 .instat_endpoint = 0x87,
333 .indat_endpoint = -1,
334 .glocont_endpoint = 0x07,
335 .calculate_baud_rate = keyspan_usa19w_calc_baud,
336 .baudclk = KEYSPAN_USA28X_BAUDCLK,
337};
338
339static const struct keyspan_device_details usa28xa_device_details = {
340 .product_id = keyspan_usa28xa_product_id,
341 .msg_format = msg_usa26,
342 .num_ports = 2,
343 .indat_endp_flip = 0,
344 .outdat_endp_flip = 1,
345 .indat_endpoints = {0x81, 0x83},
346 .outdat_endpoints = {0x01, 0x03},
347 .inack_endpoints = {0x85, 0x86},
348 .outcont_endpoints = {0x05, 0x06},
349 .instat_endpoint = 0x87,
350 .indat_endpoint = -1,
351 .glocont_endpoint = 0x07,
352 .calculate_baud_rate = keyspan_usa19w_calc_baud,
353 .baudclk = KEYSPAN_USA28X_BAUDCLK,
354};
355
356static const struct keyspan_device_details usa28xg_device_details = {
357 .product_id = keyspan_usa28xg_product_id,
358 .msg_format = msg_usa67,
359 .num_ports = 2,
360 .indat_endp_flip = 0,
361 .outdat_endp_flip = 0,
362 .indat_endpoints = {0x84, 0x88},
363 .outdat_endpoints = {0x02, 0x06},
364 .inack_endpoints = {-1, -1},
365 .outcont_endpoints = {-1, -1},
366 .instat_endpoint = 0x81,
367 .indat_endpoint = -1,
368 .glocont_endpoint = 0x01,
369 .calculate_baud_rate = keyspan_usa19w_calc_baud,
370 .baudclk = KEYSPAN_USA28X_BAUDCLK,
371};
372/*
373 * We don't need a separate entry for the usa28xb as it appears as a 28x
374 * anyway.
375 */
376
377static const struct keyspan_device_details usa49w_device_details = {
378 .product_id = keyspan_usa49w_product_id,
379 .msg_format = msg_usa49,
380 .num_ports = 4,
381 .indat_endp_flip = 0,
382 .outdat_endp_flip = 0,
383 .indat_endpoints = {0x81, 0x82, 0x83, 0x84},
384 .outdat_endpoints = {0x01, 0x02, 0x03, 0x04},
385 .inack_endpoints = {-1, -1, -1, -1},
386 .outcont_endpoints = {-1, -1, -1, -1},
387 .instat_endpoint = 0x87,
388 .indat_endpoint = -1,
389 .glocont_endpoint = 0x07,
390 .calculate_baud_rate = keyspan_usa19w_calc_baud,
391 .baudclk = KEYSPAN_USA49W_BAUDCLK,
392};
393
394static const struct keyspan_device_details usa49wlc_device_details = {
395 .product_id = keyspan_usa49wlc_product_id,
396 .msg_format = msg_usa49,
397 .num_ports = 4,
398 .indat_endp_flip = 0,
399 .outdat_endp_flip = 0,
400 .indat_endpoints = {0x81, 0x82, 0x83, 0x84},
401 .outdat_endpoints = {0x01, 0x02, 0x03, 0x04},
402 .inack_endpoints = {-1, -1, -1, -1},
403 .outcont_endpoints = {-1, -1, -1, -1},
404 .instat_endpoint = 0x87,
405 .indat_endpoint = -1,
406 .glocont_endpoint = 0x07,
407 .calculate_baud_rate = keyspan_usa19w_calc_baud,
408 .baudclk = KEYSPAN_USA19W_BAUDCLK,
409};
410
411static const struct keyspan_device_details usa49wg_device_details = {
412 .product_id = keyspan_usa49wg_product_id,
413 .msg_format = msg_usa49,
414 .num_ports = 4,
415 .indat_endp_flip = 0,
416 .outdat_endp_flip = 0,
417 .indat_endpoints = {-1, -1, -1, -1}, /* single 'global' data in EP */
418 .outdat_endpoints = {0x01, 0x02, 0x04, 0x06},
419 .inack_endpoints = {-1, -1, -1, -1},
420 .outcont_endpoints = {-1, -1, -1, -1},
421 .instat_endpoint = 0x81,
422 .indat_endpoint = 0x88,
423 .glocont_endpoint = 0x00, /* uses control EP */
424 .calculate_baud_rate = keyspan_usa19w_calc_baud,
425 .baudclk = KEYSPAN_USA19W_BAUDCLK,
426};
427
428static const struct keyspan_device_details *keyspan_devices[] = {
429 &usa18x_device_details,
430 &usa19_device_details,
431 &usa19qi_device_details,
432 &mpr_device_details,
433 &usa19qw_device_details,
434 &usa19w_device_details,
435 &usa19hs_device_details,
436 &usa28_device_details,
437 &usa28x_device_details,
438 &usa28xa_device_details,
439 &usa28xg_device_details,
440 /* 28xb not required as it renumerates as a 28x */
441 &usa49w_device_details,
442 &usa49wlc_device_details,
443 &usa49wg_device_details,
444 NULL,
445};
446
447static const struct usb_device_id keyspan_ids_combined[] = {
448 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa18x_pre_product_id) },
449 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19_pre_product_id) },
450 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19w_pre_product_id) },
451 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19qi_pre_product_id) },
452 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19qw_pre_product_id) },
453 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_mpr_pre_product_id) },
454 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28_pre_product_id) },
455 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28x_pre_product_id) },
456 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xa_pre_product_id) },
457 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xb_pre_product_id) },
458 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49w_pre_product_id) },
459 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49wlc_pre_product_id) },
460 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa18x_product_id) },
461 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19_product_id) },
462 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19w_product_id) },
463 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19qi_product_id) },
464 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19qw_product_id) },
465 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19hs_product_id) },
466 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_mpr_product_id) },
467 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28_product_id) },
468 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28x_product_id) },
469 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xa_product_id) },
470 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xg_product_id) },
471 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49w_product_id)},
472 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49wlc_product_id)},
473 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49wg_product_id)},
474 { } /* Terminating entry */
475};
476
477MODULE_DEVICE_TABLE(usb, keyspan_ids_combined);
478
479/* usb_device_id table for the pre-firmware download keyspan devices */
480static const struct usb_device_id keyspan_pre_ids[] = {
481 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa18x_pre_product_id) },
482 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19_pre_product_id) },
483 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19qi_pre_product_id) },
484 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19qw_pre_product_id) },
485 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19w_pre_product_id) },
486 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_mpr_pre_product_id) },
487 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28_pre_product_id) },
488 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28x_pre_product_id) },
489 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xa_pre_product_id) },
490 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xb_pre_product_id) },
491 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49w_pre_product_id) },
492 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49wlc_pre_product_id) },
493 { } /* Terminating entry */
494};
495
496static const struct usb_device_id keyspan_1port_ids[] = {
497 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa18x_product_id) },
498 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19_product_id) },
499 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19qi_product_id) },
500 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19qw_product_id) },
501 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19w_product_id) },
502 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19hs_product_id) },
503 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_mpr_product_id) },
504 { } /* Terminating entry */
505};
506
507static const struct usb_device_id keyspan_2port_ids[] = {
508 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28_product_id) },
509 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28x_product_id) },
510 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xa_product_id) },
511 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xg_product_id) },
512 { } /* Terminating entry */
513};
514
515static const struct usb_device_id keyspan_4port_ids[] = {
516 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49w_product_id) },
517 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49wlc_product_id)},
518 { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49wg_product_id)},
519 { } /* Terminating entry */
520};
521
522#define INSTAT_BUFLEN 32
523#define GLOCONT_BUFLEN 64
524#define INDAT49W_BUFLEN 512
525#define IN_BUFLEN 64
526#define OUT_BUFLEN 64
527#define INACK_BUFLEN 1
528#define OUTCONT_BUFLEN 64
529
530 /* Per device and per port private data */
531struct keyspan_serial_private {
532 const struct keyspan_device_details *device_details;
533
534 struct urb *instat_urb;
535 char *instat_buf;
536
537 /* added to support 49wg, where data from all 4 ports comes in
538 on 1 EP and high-speed supported */
539 struct urb *indat_urb;
540 char *indat_buf;
541
542 /* XXX this one probably will need a lock */
543 struct urb *glocont_urb;
544 char *glocont_buf;
545 char *ctrl_buf; /* for EP0 control message */
546};
547
548struct keyspan_port_private {
549 /* Keep track of which input & output endpoints to use */
550 int in_flip;
551 int out_flip;
552
553 /* Keep duplicate of device details in each port
554 structure as well - simplifies some of the
555 callback functions etc. */
556 const struct keyspan_device_details *device_details;
557
558 /* Input endpoints and buffer for this port */
559 struct urb *in_urbs[2];
560 char *in_buffer[2];
561 /* Output endpoints and buffer for this port */
562 struct urb *out_urbs[2];
563 char *out_buffer[2];
564
565 /* Input ack endpoint */
566 struct urb *inack_urb;
567 char *inack_buffer;
568
569 /* Output control endpoint */
570 struct urb *outcont_urb;
571 char *outcont_buffer;
572
573 /* Settings for the port */
574 int baud;
575 int old_baud;
576 unsigned int cflag;
577 unsigned int old_cflag;
578 enum {flow_none, flow_cts, flow_xon} flow_control;
579 int rts_state; /* Handshaking pins (outputs) */
580 int dtr_state;
581 int cts_state; /* Handshaking pins (inputs) */
582 int dsr_state;
583 int dcd_state;
584 int ri_state;
585 int break_on;
586
587 unsigned long tx_start_time[2];
588 int resend_cont; /* need to resend control packet */
589};
590
591/* Include Keyspan message headers. All current Keyspan Adapters
592 make use of one of five message formats which are referred
593 to as USA-26, USA-28, USA-49, USA-90, USA-67 by Keyspan and
594 within this driver. */
595#include "keyspan_usa26msg.h"
596#include "keyspan_usa28msg.h"
597#include "keyspan_usa49msg.h"
598#include "keyspan_usa90msg.h"
599#include "keyspan_usa67msg.h"
600
601
602static void keyspan_break_ctl(struct tty_struct *tty, int break_state)
603{
604 struct usb_serial_port *port = tty->driver_data;
605 struct keyspan_port_private *p_priv;
606
607 p_priv = usb_get_serial_port_data(port);
608
609 if (break_state == -1)
610 p_priv->break_on = 1;
611 else
612 p_priv->break_on = 0;
613
614 keyspan_send_setup(port, 0);
615}
616
617
618static void keyspan_set_termios(struct tty_struct *tty,
619 struct usb_serial_port *port,
620 const struct ktermios *old_termios)
621{
622 int baud_rate, device_port;
623 struct keyspan_port_private *p_priv;
624 const struct keyspan_device_details *d_details;
625 unsigned int cflag;
626
627 p_priv = usb_get_serial_port_data(port);
628 d_details = p_priv->device_details;
629 cflag = tty->termios.c_cflag;
630 device_port = port->port_number;
631
632 /* Baud rate calculation takes baud rate as an integer
633 so other rates can be generated if desired. */
634 baud_rate = tty_get_baud_rate(tty);
635 /* If no match or invalid, don't change */
636 if (d_details->calculate_baud_rate(port, baud_rate, d_details->baudclk,
637 NULL, NULL, NULL, device_port) == KEYSPAN_BAUD_RATE_OK) {
638 /* FIXME - more to do here to ensure rate changes cleanly */
639 /* FIXME - calculate exact rate from divisor ? */
640 p_priv->baud = baud_rate;
641 } else
642 baud_rate = tty_termios_baud_rate(old_termios);
643
644 tty_encode_baud_rate(tty, baud_rate, baud_rate);
645 /* set CTS/RTS handshake etc. */
646 p_priv->cflag = cflag;
647 p_priv->flow_control = (cflag & CRTSCTS) ? flow_cts : flow_none;
648
649 /* Mark/Space not supported */
650 tty->termios.c_cflag &= ~CMSPAR;
651
652 keyspan_send_setup(port, 0);
653}
654
655static int keyspan_tiocmget(struct tty_struct *tty)
656{
657 struct usb_serial_port *port = tty->driver_data;
658 struct keyspan_port_private *p_priv = usb_get_serial_port_data(port);
659 unsigned int value;
660
661 value = ((p_priv->rts_state) ? TIOCM_RTS : 0) |
662 ((p_priv->dtr_state) ? TIOCM_DTR : 0) |
663 ((p_priv->cts_state) ? TIOCM_CTS : 0) |
664 ((p_priv->dsr_state) ? TIOCM_DSR : 0) |
665 ((p_priv->dcd_state) ? TIOCM_CAR : 0) |
666 ((p_priv->ri_state) ? TIOCM_RNG : 0);
667
668 return value;
669}
670
671static int keyspan_tiocmset(struct tty_struct *tty,
672 unsigned int set, unsigned int clear)
673{
674 struct usb_serial_port *port = tty->driver_data;
675 struct keyspan_port_private *p_priv = usb_get_serial_port_data(port);
676
677 if (set & TIOCM_RTS)
678 p_priv->rts_state = 1;
679 if (set & TIOCM_DTR)
680 p_priv->dtr_state = 1;
681 if (clear & TIOCM_RTS)
682 p_priv->rts_state = 0;
683 if (clear & TIOCM_DTR)
684 p_priv->dtr_state = 0;
685 keyspan_send_setup(port, 0);
686 return 0;
687}
688
689/* Write function is similar for the four protocols used
690 with only a minor change for usa90 (usa19hs) required */
691static int keyspan_write(struct tty_struct *tty,
692 struct usb_serial_port *port, const unsigned char *buf, int count)
693{
694 struct keyspan_port_private *p_priv;
695 const struct keyspan_device_details *d_details;
696 int flip;
697 int left, todo;
698 struct urb *this_urb;
699 int err, maxDataLen, dataOffset;
700
701 p_priv = usb_get_serial_port_data(port);
702 d_details = p_priv->device_details;
703
704 if (d_details->msg_format == msg_usa90) {
705 maxDataLen = 64;
706 dataOffset = 0;
707 } else {
708 maxDataLen = 63;
709 dataOffset = 1;
710 }
711
712 dev_dbg(&port->dev, "%s - %d chars, flip=%d\n", __func__, count,
713 p_priv->out_flip);
714
715 for (left = count; left > 0; left -= todo) {
716 todo = left;
717 if (todo > maxDataLen)
718 todo = maxDataLen;
719
720 flip = p_priv->out_flip;
721
722 /* Check we have a valid urb/endpoint before we use it... */
723 this_urb = p_priv->out_urbs[flip];
724 if (this_urb == NULL) {
725 /* no bulk out, so return 0 bytes written */
726 dev_dbg(&port->dev, "%s - no output urb :(\n", __func__);
727 return count;
728 }
729
730 dev_dbg(&port->dev, "%s - endpoint %x flip %d\n",
731 __func__, usb_pipeendpoint(this_urb->pipe), flip);
732
733 if (this_urb->status == -EINPROGRESS) {
734 if (time_before(jiffies,
735 p_priv->tx_start_time[flip] + 10 * HZ))
736 break;
737 usb_unlink_urb(this_urb);
738 break;
739 }
740
741 /* First byte in buffer is "last flag" (except for usa19hx)
742 - unused so for now so set to zero */
743 ((char *)this_urb->transfer_buffer)[0] = 0;
744
745 memcpy(this_urb->transfer_buffer + dataOffset, buf, todo);
746 buf += todo;
747
748 /* send the data out the bulk port */
749 this_urb->transfer_buffer_length = todo + dataOffset;
750
751 err = usb_submit_urb(this_urb, GFP_ATOMIC);
752 if (err != 0)
753 dev_dbg(&port->dev, "usb_submit_urb(write bulk) failed (%d)\n", err);
754 p_priv->tx_start_time[flip] = jiffies;
755
756 /* Flip for next time if usa26 or usa28 interface
757 (not used on usa49) */
758 p_priv->out_flip = (flip + 1) & d_details->outdat_endp_flip;
759 }
760
761 return count - left;
762}
763
764static void usa26_indat_callback(struct urb *urb)
765{
766 int i, err;
767 int endpoint;
768 struct usb_serial_port *port;
769 unsigned char *data = urb->transfer_buffer;
770 int status = urb->status;
771
772 endpoint = usb_pipeendpoint(urb->pipe);
773
774 if (status) {
775 dev_dbg(&urb->dev->dev, "%s - nonzero status %d on endpoint %x\n",
776 __func__, status, endpoint);
777 return;
778 }
779
780 port = urb->context;
781 if (urb->actual_length) {
782 /* 0x80 bit is error flag */
783 if ((data[0] & 0x80) == 0) {
784 /* no errors on individual bytes, only
785 possible overrun err */
786 if (data[0] & RXERROR_OVERRUN) {
787 tty_insert_flip_char(&port->port, 0,
788 TTY_OVERRUN);
789 }
790 for (i = 1; i < urb->actual_length ; ++i)
791 tty_insert_flip_char(&port->port, data[i],
792 TTY_NORMAL);
793 } else {
794 /* some bytes had errors, every byte has status */
795 dev_dbg(&port->dev, "%s - RX error!!!!\n", __func__);
796 for (i = 0; i + 1 < urb->actual_length; i += 2) {
797 int stat = data[i];
798 int flag = TTY_NORMAL;
799
800 if (stat & RXERROR_OVERRUN) {
801 tty_insert_flip_char(&port->port, 0,
802 TTY_OVERRUN);
803 }
804 /* XXX should handle break (0x10) */
805 if (stat & RXERROR_PARITY)
806 flag = TTY_PARITY;
807 else if (stat & RXERROR_FRAMING)
808 flag = TTY_FRAME;
809
810 tty_insert_flip_char(&port->port, data[i+1],
811 flag);
812 }
813 }
814 tty_flip_buffer_push(&port->port);
815 }
816
817 /* Resubmit urb so we continue receiving */
818 err = usb_submit_urb(urb, GFP_ATOMIC);
819 if (err != 0)
820 dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err);
821}
822
823/* Outdat handling is common for all devices */
824static void usa2x_outdat_callback(struct urb *urb)
825{
826 struct usb_serial_port *port;
827 struct keyspan_port_private *p_priv;
828
829 port = urb->context;
830 p_priv = usb_get_serial_port_data(port);
831 dev_dbg(&port->dev, "%s - urb %d\n", __func__, urb == p_priv->out_urbs[1]);
832
833 usb_serial_port_softint(port);
834}
835
836static void usa26_inack_callback(struct urb *urb)
837{
838}
839
840static void usa26_outcont_callback(struct urb *urb)
841{
842 struct usb_serial_port *port;
843 struct keyspan_port_private *p_priv;
844
845 port = urb->context;
846 p_priv = usb_get_serial_port_data(port);
847
848 if (p_priv->resend_cont) {
849 dev_dbg(&port->dev, "%s - sending setup\n", __func__);
850 keyspan_usa26_send_setup(port->serial, port,
851 p_priv->resend_cont - 1);
852 }
853}
854
855static void usa26_instat_callback(struct urb *urb)
856{
857 unsigned char *data = urb->transfer_buffer;
858 struct keyspan_usa26_portStatusMessage *msg;
859 struct usb_serial *serial;
860 struct usb_serial_port *port;
861 struct keyspan_port_private *p_priv;
862 int old_dcd_state, err;
863 int status = urb->status;
864
865 serial = urb->context;
866
867 if (status) {
868 dev_dbg(&urb->dev->dev, "%s - nonzero status: %d\n",
869 __func__, status);
870 return;
871 }
872 if (urb->actual_length != 9) {
873 dev_dbg(&urb->dev->dev, "%s - %d byte report??\n", __func__, urb->actual_length);
874 goto exit;
875 }
876
877 msg = (struct keyspan_usa26_portStatusMessage *)data;
878
879 /* Check port number from message and retrieve private data */
880 if (msg->port >= serial->num_ports) {
881 dev_dbg(&urb->dev->dev, "%s - Unexpected port number %d\n", __func__, msg->port);
882 goto exit;
883 }
884 port = serial->port[msg->port];
885 p_priv = usb_get_serial_port_data(port);
886 if (!p_priv)
887 goto resubmit;
888
889 /* Update handshaking pin state information */
890 old_dcd_state = p_priv->dcd_state;
891 p_priv->cts_state = ((msg->hskia_cts) ? 1 : 0);
892 p_priv->dsr_state = ((msg->dsr) ? 1 : 0);
893 p_priv->dcd_state = ((msg->gpia_dcd) ? 1 : 0);
894 p_priv->ri_state = ((msg->ri) ? 1 : 0);
895
896 if (old_dcd_state != p_priv->dcd_state)
897 tty_port_tty_hangup(&port->port, true);
898resubmit:
899 /* Resubmit urb so we continue receiving */
900 err = usb_submit_urb(urb, GFP_ATOMIC);
901 if (err != 0)
902 dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err);
903exit: ;
904}
905
906static void usa26_glocont_callback(struct urb *urb)
907{
908}
909
910
911static void usa28_indat_callback(struct urb *urb)
912{
913 int err;
914 struct usb_serial_port *port;
915 unsigned char *data;
916 struct keyspan_port_private *p_priv;
917 int status = urb->status;
918
919 port = urb->context;
920 p_priv = usb_get_serial_port_data(port);
921 data = urb->transfer_buffer;
922
923 if (urb != p_priv->in_urbs[p_priv->in_flip])
924 return;
925
926 do {
927 if (status) {
928 dev_dbg(&urb->dev->dev, "%s - nonzero status %d on endpoint %x\n",
929 __func__, status, usb_pipeendpoint(urb->pipe));
930 return;
931 }
932
933 port = urb->context;
934 p_priv = usb_get_serial_port_data(port);
935 data = urb->transfer_buffer;
936
937 if (urb->actual_length) {
938 tty_insert_flip_string(&port->port, data,
939 urb->actual_length);
940 tty_flip_buffer_push(&port->port);
941 }
942
943 /* Resubmit urb so we continue receiving */
944 err = usb_submit_urb(urb, GFP_ATOMIC);
945 if (err != 0)
946 dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n",
947 __func__, err);
948 p_priv->in_flip ^= 1;
949
950 urb = p_priv->in_urbs[p_priv->in_flip];
951 } while (urb->status != -EINPROGRESS);
952}
953
954static void usa28_inack_callback(struct urb *urb)
955{
956}
957
958static void usa28_outcont_callback(struct urb *urb)
959{
960 struct usb_serial_port *port;
961 struct keyspan_port_private *p_priv;
962
963 port = urb->context;
964 p_priv = usb_get_serial_port_data(port);
965
966 if (p_priv->resend_cont) {
967 dev_dbg(&port->dev, "%s - sending setup\n", __func__);
968 keyspan_usa28_send_setup(port->serial, port,
969 p_priv->resend_cont - 1);
970 }
971}
972
973static void usa28_instat_callback(struct urb *urb)
974{
975 int err;
976 unsigned char *data = urb->transfer_buffer;
977 struct keyspan_usa28_portStatusMessage *msg;
978 struct usb_serial *serial;
979 struct usb_serial_port *port;
980 struct keyspan_port_private *p_priv;
981 int old_dcd_state;
982 int status = urb->status;
983
984 serial = urb->context;
985
986 if (status) {
987 dev_dbg(&urb->dev->dev, "%s - nonzero status: %d\n",
988 __func__, status);
989 return;
990 }
991
992 if (urb->actual_length != sizeof(struct keyspan_usa28_portStatusMessage)) {
993 dev_dbg(&urb->dev->dev, "%s - bad length %d\n", __func__, urb->actual_length);
994 goto exit;
995 }
996
997 msg = (struct keyspan_usa28_portStatusMessage *)data;
998
999 /* Check port number from message and retrieve private data */
1000 if (msg->port >= serial->num_ports) {
1001 dev_dbg(&urb->dev->dev, "%s - Unexpected port number %d\n", __func__, msg->port);
1002 goto exit;
1003 }
1004 port = serial->port[msg->port];
1005 p_priv = usb_get_serial_port_data(port);
1006 if (!p_priv)
1007 goto resubmit;
1008
1009 /* Update handshaking pin state information */
1010 old_dcd_state = p_priv->dcd_state;
1011 p_priv->cts_state = ((msg->cts) ? 1 : 0);
1012 p_priv->dsr_state = ((msg->dsr) ? 1 : 0);
1013 p_priv->dcd_state = ((msg->dcd) ? 1 : 0);
1014 p_priv->ri_state = ((msg->ri) ? 1 : 0);
1015
1016 if (old_dcd_state != p_priv->dcd_state && old_dcd_state)
1017 tty_port_tty_hangup(&port->port, true);
1018resubmit:
1019 /* Resubmit urb so we continue receiving */
1020 err = usb_submit_urb(urb, GFP_ATOMIC);
1021 if (err != 0)
1022 dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err);
1023exit: ;
1024}
1025
1026static void usa28_glocont_callback(struct urb *urb)
1027{
1028}
1029
1030
1031static void usa49_glocont_callback(struct urb *urb)
1032{
1033 struct usb_serial *serial;
1034 struct usb_serial_port *port;
1035 struct keyspan_port_private *p_priv;
1036 int i;
1037
1038 serial = urb->context;
1039 for (i = 0; i < serial->num_ports; ++i) {
1040 port = serial->port[i];
1041 p_priv = usb_get_serial_port_data(port);
1042 if (!p_priv)
1043 continue;
1044
1045 if (p_priv->resend_cont) {
1046 dev_dbg(&port->dev, "%s - sending setup\n", __func__);
1047 keyspan_usa49_send_setup(serial, port,
1048 p_priv->resend_cont - 1);
1049 break;
1050 }
1051 }
1052}
1053
1054 /* This is actually called glostat in the Keyspan
1055 doco */
1056static void usa49_instat_callback(struct urb *urb)
1057{
1058 int err;
1059 unsigned char *data = urb->transfer_buffer;
1060 struct keyspan_usa49_portStatusMessage *msg;
1061 struct usb_serial *serial;
1062 struct usb_serial_port *port;
1063 struct keyspan_port_private *p_priv;
1064 int old_dcd_state;
1065 int status = urb->status;
1066
1067 serial = urb->context;
1068
1069 if (status) {
1070 dev_dbg(&urb->dev->dev, "%s - nonzero status: %d\n",
1071 __func__, status);
1072 return;
1073 }
1074
1075 if (urb->actual_length !=
1076 sizeof(struct keyspan_usa49_portStatusMessage)) {
1077 dev_dbg(&urb->dev->dev, "%s - bad length %d\n", __func__, urb->actual_length);
1078 goto exit;
1079 }
1080
1081 msg = (struct keyspan_usa49_portStatusMessage *)data;
1082
1083 /* Check port number from message and retrieve private data */
1084 if (msg->portNumber >= serial->num_ports) {
1085 dev_dbg(&urb->dev->dev, "%s - Unexpected port number %d\n",
1086 __func__, msg->portNumber);
1087 goto exit;
1088 }
1089 port = serial->port[msg->portNumber];
1090 p_priv = usb_get_serial_port_data(port);
1091 if (!p_priv)
1092 goto resubmit;
1093
1094 /* Update handshaking pin state information */
1095 old_dcd_state = p_priv->dcd_state;
1096 p_priv->cts_state = ((msg->cts) ? 1 : 0);
1097 p_priv->dsr_state = ((msg->dsr) ? 1 : 0);
1098 p_priv->dcd_state = ((msg->dcd) ? 1 : 0);
1099 p_priv->ri_state = ((msg->ri) ? 1 : 0);
1100
1101 if (old_dcd_state != p_priv->dcd_state && old_dcd_state)
1102 tty_port_tty_hangup(&port->port, true);
1103resubmit:
1104 /* Resubmit urb so we continue receiving */
1105 err = usb_submit_urb(urb, GFP_ATOMIC);
1106 if (err != 0)
1107 dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err);
1108exit: ;
1109}
1110
1111static void usa49_inack_callback(struct urb *urb)
1112{
1113}
1114
1115static void usa49_indat_callback(struct urb *urb)
1116{
1117 int i, err;
1118 int endpoint;
1119 struct usb_serial_port *port;
1120 unsigned char *data = urb->transfer_buffer;
1121 int status = urb->status;
1122
1123 endpoint = usb_pipeendpoint(urb->pipe);
1124
1125 if (status) {
1126 dev_dbg(&urb->dev->dev, "%s - nonzero status %d on endpoint %x\n",
1127 __func__, status, endpoint);
1128 return;
1129 }
1130
1131 port = urb->context;
1132 if (urb->actual_length) {
1133 /* 0x80 bit is error flag */
1134 if ((data[0] & 0x80) == 0) {
1135 /* no error on any byte */
1136 tty_insert_flip_string(&port->port, data + 1,
1137 urb->actual_length - 1);
1138 } else {
1139 /* some bytes had errors, every byte has status */
1140 for (i = 0; i + 1 < urb->actual_length; i += 2) {
1141 int stat = data[i];
1142 int flag = TTY_NORMAL;
1143
1144 if (stat & RXERROR_OVERRUN) {
1145 tty_insert_flip_char(&port->port, 0,
1146 TTY_OVERRUN);
1147 }
1148 /* XXX should handle break (0x10) */
1149 if (stat & RXERROR_PARITY)
1150 flag = TTY_PARITY;
1151 else if (stat & RXERROR_FRAMING)
1152 flag = TTY_FRAME;
1153
1154 tty_insert_flip_char(&port->port, data[i+1],
1155 flag);
1156 }
1157 }
1158 tty_flip_buffer_push(&port->port);
1159 }
1160
1161 /* Resubmit urb so we continue receiving */
1162 err = usb_submit_urb(urb, GFP_ATOMIC);
1163 if (err != 0)
1164 dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err);
1165}
1166
1167static void usa49wg_indat_callback(struct urb *urb)
1168{
1169 int i, len, x, err;
1170 struct usb_serial *serial;
1171 struct usb_serial_port *port;
1172 unsigned char *data = urb->transfer_buffer;
1173 int status = urb->status;
1174
1175 serial = urb->context;
1176
1177 if (status) {
1178 dev_dbg(&urb->dev->dev, "%s - nonzero status: %d\n",
1179 __func__, status);
1180 return;
1181 }
1182
1183 /* inbound data is in the form P#, len, status, data */
1184 i = 0;
1185 len = 0;
1186
1187 while (i < urb->actual_length) {
1188
1189 /* Check port number from message */
1190 if (data[i] >= serial->num_ports) {
1191 dev_dbg(&urb->dev->dev, "%s - Unexpected port number %d\n",
1192 __func__, data[i]);
1193 return;
1194 }
1195 port = serial->port[data[i++]];
1196 len = data[i++];
1197
1198 /* 0x80 bit is error flag */
1199 if ((data[i] & 0x80) == 0) {
1200 /* no error on any byte */
1201 i++;
1202 for (x = 1; x < len && i < urb->actual_length; ++x)
1203 tty_insert_flip_char(&port->port,
1204 data[i++], 0);
1205 } else {
1206 /*
1207 * some bytes had errors, every byte has status
1208 */
1209 for (x = 0; x + 1 < len &&
1210 i + 1 < urb->actual_length; x += 2) {
1211 int stat = data[i];
1212 int flag = TTY_NORMAL;
1213
1214 if (stat & RXERROR_OVERRUN) {
1215 tty_insert_flip_char(&port->port, 0,
1216 TTY_OVERRUN);
1217 }
1218 /* XXX should handle break (0x10) */
1219 if (stat & RXERROR_PARITY)
1220 flag = TTY_PARITY;
1221 else if (stat & RXERROR_FRAMING)
1222 flag = TTY_FRAME;
1223
1224 tty_insert_flip_char(&port->port, data[i+1],
1225 flag);
1226 i += 2;
1227 }
1228 }
1229 tty_flip_buffer_push(&port->port);
1230 }
1231
1232 /* Resubmit urb so we continue receiving */
1233 err = usb_submit_urb(urb, GFP_ATOMIC);
1234 if (err != 0)
1235 dev_dbg(&urb->dev->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err);
1236}
1237
1238/* not used, usa-49 doesn't have per-port control endpoints */
1239static void usa49_outcont_callback(struct urb *urb)
1240{
1241}
1242
1243static void usa90_indat_callback(struct urb *urb)
1244{
1245 int i, err;
1246 int endpoint;
1247 struct usb_serial_port *port;
1248 struct keyspan_port_private *p_priv;
1249 unsigned char *data = urb->transfer_buffer;
1250 int status = urb->status;
1251
1252 endpoint = usb_pipeendpoint(urb->pipe);
1253
1254 if (status) {
1255 dev_dbg(&urb->dev->dev, "%s - nonzero status %d on endpoint %x\n",
1256 __func__, status, endpoint);
1257 return;
1258 }
1259
1260 port = urb->context;
1261 p_priv = usb_get_serial_port_data(port);
1262
1263 if (urb->actual_length) {
1264 /* if current mode is DMA, looks like usa28 format
1265 otherwise looks like usa26 data format */
1266
1267 if (p_priv->baud > 57600)
1268 tty_insert_flip_string(&port->port, data,
1269 urb->actual_length);
1270 else {
1271 /* 0x80 bit is error flag */
1272 if ((data[0] & 0x80) == 0) {
1273 /* no errors on individual bytes, only
1274 possible overrun err*/
1275 if (data[0] & RXERROR_OVERRUN) {
1276 tty_insert_flip_char(&port->port, 0,
1277 TTY_OVERRUN);
1278 }
1279 for (i = 1; i < urb->actual_length ; ++i)
1280 tty_insert_flip_char(&port->port,
1281 data[i], TTY_NORMAL);
1282 } else {
1283 /* some bytes had errors, every byte has status */
1284 dev_dbg(&port->dev, "%s - RX error!!!!\n", __func__);
1285 for (i = 0; i + 1 < urb->actual_length; i += 2) {
1286 int stat = data[i];
1287 int flag = TTY_NORMAL;
1288
1289 if (stat & RXERROR_OVERRUN) {
1290 tty_insert_flip_char(
1291 &port->port, 0,
1292 TTY_OVERRUN);
1293 }
1294 /* XXX should handle break (0x10) */
1295 if (stat & RXERROR_PARITY)
1296 flag = TTY_PARITY;
1297 else if (stat & RXERROR_FRAMING)
1298 flag = TTY_FRAME;
1299
1300 tty_insert_flip_char(&port->port,
1301 data[i+1], flag);
1302 }
1303 }
1304 }
1305 tty_flip_buffer_push(&port->port);
1306 }
1307
1308 /* Resubmit urb so we continue receiving */
1309 err = usb_submit_urb(urb, GFP_ATOMIC);
1310 if (err != 0)
1311 dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err);
1312}
1313
1314
1315static void usa90_instat_callback(struct urb *urb)
1316{
1317 unsigned char *data = urb->transfer_buffer;
1318 struct keyspan_usa90_portStatusMessage *msg;
1319 struct usb_serial *serial;
1320 struct usb_serial_port *port;
1321 struct keyspan_port_private *p_priv;
1322 int old_dcd_state, err;
1323 int status = urb->status;
1324
1325 serial = urb->context;
1326
1327 if (status) {
1328 dev_dbg(&urb->dev->dev, "%s - nonzero status: %d\n",
1329 __func__, status);
1330 return;
1331 }
1332 if (urb->actual_length < 14) {
1333 dev_dbg(&urb->dev->dev, "%s - %d byte report??\n", __func__, urb->actual_length);
1334 goto exit;
1335 }
1336
1337 msg = (struct keyspan_usa90_portStatusMessage *)data;
1338
1339 /* Now do something useful with the data */
1340
1341 port = serial->port[0];
1342 p_priv = usb_get_serial_port_data(port);
1343 if (!p_priv)
1344 goto resubmit;
1345
1346 /* Update handshaking pin state information */
1347 old_dcd_state = p_priv->dcd_state;
1348 p_priv->cts_state = ((msg->cts) ? 1 : 0);
1349 p_priv->dsr_state = ((msg->dsr) ? 1 : 0);
1350 p_priv->dcd_state = ((msg->dcd) ? 1 : 0);
1351 p_priv->ri_state = ((msg->ri) ? 1 : 0);
1352
1353 if (old_dcd_state != p_priv->dcd_state && old_dcd_state)
1354 tty_port_tty_hangup(&port->port, true);
1355resubmit:
1356 /* Resubmit urb so we continue receiving */
1357 err = usb_submit_urb(urb, GFP_ATOMIC);
1358 if (err != 0)
1359 dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err);
1360exit:
1361 ;
1362}
1363
1364static void usa90_outcont_callback(struct urb *urb)
1365{
1366 struct usb_serial_port *port;
1367 struct keyspan_port_private *p_priv;
1368
1369 port = urb->context;
1370 p_priv = usb_get_serial_port_data(port);
1371
1372 if (p_priv->resend_cont) {
1373 dev_dbg(&urb->dev->dev, "%s - sending setup\n", __func__);
1374 keyspan_usa90_send_setup(port->serial, port,
1375 p_priv->resend_cont - 1);
1376 }
1377}
1378
1379/* Status messages from the 28xg */
1380static void usa67_instat_callback(struct urb *urb)
1381{
1382 int err;
1383 unsigned char *data = urb->transfer_buffer;
1384 struct keyspan_usa67_portStatusMessage *msg;
1385 struct usb_serial *serial;
1386 struct usb_serial_port *port;
1387 struct keyspan_port_private *p_priv;
1388 int old_dcd_state;
1389 int status = urb->status;
1390
1391 serial = urb->context;
1392
1393 if (status) {
1394 dev_dbg(&urb->dev->dev, "%s - nonzero status: %d\n",
1395 __func__, status);
1396 return;
1397 }
1398
1399 if (urb->actual_length !=
1400 sizeof(struct keyspan_usa67_portStatusMessage)) {
1401 dev_dbg(&urb->dev->dev, "%s - bad length %d\n", __func__, urb->actual_length);
1402 return;
1403 }
1404
1405
1406 /* Now do something useful with the data */
1407 msg = (struct keyspan_usa67_portStatusMessage *)data;
1408
1409 /* Check port number from message and retrieve private data */
1410 if (msg->port >= serial->num_ports) {
1411 dev_dbg(&urb->dev->dev, "%s - Unexpected port number %d\n", __func__, msg->port);
1412 return;
1413 }
1414
1415 port = serial->port[msg->port];
1416 p_priv = usb_get_serial_port_data(port);
1417 if (!p_priv)
1418 goto resubmit;
1419
1420 /* Update handshaking pin state information */
1421 old_dcd_state = p_priv->dcd_state;
1422 p_priv->cts_state = ((msg->hskia_cts) ? 1 : 0);
1423 p_priv->dcd_state = ((msg->gpia_dcd) ? 1 : 0);
1424
1425 if (old_dcd_state != p_priv->dcd_state && old_dcd_state)
1426 tty_port_tty_hangup(&port->port, true);
1427resubmit:
1428 /* Resubmit urb so we continue receiving */
1429 err = usb_submit_urb(urb, GFP_ATOMIC);
1430 if (err != 0)
1431 dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err);
1432}
1433
1434static void usa67_glocont_callback(struct urb *urb)
1435{
1436 struct usb_serial *serial;
1437 struct usb_serial_port *port;
1438 struct keyspan_port_private *p_priv;
1439 int i;
1440
1441 serial = urb->context;
1442 for (i = 0; i < serial->num_ports; ++i) {
1443 port = serial->port[i];
1444 p_priv = usb_get_serial_port_data(port);
1445 if (!p_priv)
1446 continue;
1447
1448 if (p_priv->resend_cont) {
1449 dev_dbg(&port->dev, "%s - sending setup\n", __func__);
1450 keyspan_usa67_send_setup(serial, port,
1451 p_priv->resend_cont - 1);
1452 break;
1453 }
1454 }
1455}
1456
1457static unsigned int keyspan_write_room(struct tty_struct *tty)
1458{
1459 struct usb_serial_port *port = tty->driver_data;
1460 struct keyspan_port_private *p_priv;
1461 const struct keyspan_device_details *d_details;
1462 int flip;
1463 unsigned int data_len;
1464 struct urb *this_urb;
1465
1466 p_priv = usb_get_serial_port_data(port);
1467 d_details = p_priv->device_details;
1468
1469 /* FIXME: locking */
1470 if (d_details->msg_format == msg_usa90)
1471 data_len = 64;
1472 else
1473 data_len = 63;
1474
1475 flip = p_priv->out_flip;
1476
1477 /* Check both endpoints to see if any are available. */
1478 this_urb = p_priv->out_urbs[flip];
1479 if (this_urb != NULL) {
1480 if (this_urb->status != -EINPROGRESS)
1481 return data_len;
1482 flip = (flip + 1) & d_details->outdat_endp_flip;
1483 this_urb = p_priv->out_urbs[flip];
1484 if (this_urb != NULL) {
1485 if (this_urb->status != -EINPROGRESS)
1486 return data_len;
1487 }
1488 }
1489 return 0;
1490}
1491
1492
1493static int keyspan_open(struct tty_struct *tty, struct usb_serial_port *port)
1494{
1495 struct keyspan_port_private *p_priv;
1496 const struct keyspan_device_details *d_details;
1497 int i, err;
1498 int baud_rate, device_port;
1499 struct urb *urb;
1500 unsigned int cflag = 0;
1501
1502 p_priv = usb_get_serial_port_data(port);
1503 d_details = p_priv->device_details;
1504
1505 /* Set some sane defaults */
1506 p_priv->rts_state = 1;
1507 p_priv->dtr_state = 1;
1508 p_priv->baud = 9600;
1509
1510 /* force baud and lcr to be set on open */
1511 p_priv->old_baud = 0;
1512 p_priv->old_cflag = 0;
1513
1514 p_priv->out_flip = 0;
1515 p_priv->in_flip = 0;
1516
1517 /* Reset low level data toggle and start reading from endpoints */
1518 for (i = 0; i < 2; i++) {
1519 urb = p_priv->in_urbs[i];
1520 if (urb == NULL)
1521 continue;
1522
1523 /* make sure endpoint data toggle is synchronized
1524 with the device */
1525 usb_clear_halt(urb->dev, urb->pipe);
1526 err = usb_submit_urb(urb, GFP_KERNEL);
1527 if (err != 0)
1528 dev_dbg(&port->dev, "%s - submit urb %d failed (%d)\n", __func__, i, err);
1529 }
1530
1531 /* Reset low level data toggle on out endpoints */
1532 for (i = 0; i < 2; i++) {
1533 urb = p_priv->out_urbs[i];
1534 if (urb == NULL)
1535 continue;
1536 /* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
1537 usb_pipeout(urb->pipe), 0); */
1538 }
1539
1540 /* get the terminal config for the setup message now so we don't
1541 * need to send 2 of them */
1542
1543 device_port = port->port_number;
1544 if (tty) {
1545 cflag = tty->termios.c_cflag;
1546 /* Baud rate calculation takes baud rate as an integer
1547 so other rates can be generated if desired. */
1548 baud_rate = tty_get_baud_rate(tty);
1549 /* If no match or invalid, leave as default */
1550 if (baud_rate >= 0
1551 && d_details->calculate_baud_rate(port, baud_rate, d_details->baudclk,
1552 NULL, NULL, NULL, device_port) == KEYSPAN_BAUD_RATE_OK) {
1553 p_priv->baud = baud_rate;
1554 }
1555 }
1556 /* set CTS/RTS handshake etc. */
1557 p_priv->cflag = cflag;
1558 p_priv->flow_control = (cflag & CRTSCTS) ? flow_cts : flow_none;
1559
1560 keyspan_send_setup(port, 1);
1561 /* mdelay(100); */
1562 /* keyspan_set_termios(port, NULL); */
1563
1564 return 0;
1565}
1566
1567static void keyspan_dtr_rts(struct usb_serial_port *port, int on)
1568{
1569 struct keyspan_port_private *p_priv = usb_get_serial_port_data(port);
1570
1571 p_priv->rts_state = on;
1572 p_priv->dtr_state = on;
1573 keyspan_send_setup(port, 0);
1574}
1575
1576static void keyspan_close(struct usb_serial_port *port)
1577{
1578 int i;
1579 struct keyspan_port_private *p_priv;
1580
1581 p_priv = usb_get_serial_port_data(port);
1582
1583 p_priv->rts_state = 0;
1584 p_priv->dtr_state = 0;
1585
1586 keyspan_send_setup(port, 2);
1587 /* pilot-xfer seems to work best with this delay */
1588 mdelay(100);
1589
1590 p_priv->out_flip = 0;
1591 p_priv->in_flip = 0;
1592
1593 usb_kill_urb(p_priv->inack_urb);
1594 for (i = 0; i < 2; i++) {
1595 usb_kill_urb(p_priv->in_urbs[i]);
1596 usb_kill_urb(p_priv->out_urbs[i]);
1597 }
1598}
1599
1600/* download the firmware to a pre-renumeration device */
1601static int keyspan_fake_startup(struct usb_serial *serial)
1602{
1603 char *fw_name;
1604
1605 dev_dbg(&serial->dev->dev, "Keyspan startup version %04x product %04x\n",
1606 le16_to_cpu(serial->dev->descriptor.bcdDevice),
1607 le16_to_cpu(serial->dev->descriptor.idProduct));
1608
1609 if ((le16_to_cpu(serial->dev->descriptor.bcdDevice) & 0x8000)
1610 != 0x8000) {
1611 dev_dbg(&serial->dev->dev, "Firmware already loaded. Quitting.\n");
1612 return 1;
1613 }
1614
1615 /* Select firmware image on the basis of idProduct */
1616 switch (le16_to_cpu(serial->dev->descriptor.idProduct)) {
1617 case keyspan_usa28_pre_product_id:
1618 fw_name = "keyspan/usa28.fw";
1619 break;
1620
1621 case keyspan_usa28x_pre_product_id:
1622 fw_name = "keyspan/usa28x.fw";
1623 break;
1624
1625 case keyspan_usa28xa_pre_product_id:
1626 fw_name = "keyspan/usa28xa.fw";
1627 break;
1628
1629 case keyspan_usa28xb_pre_product_id:
1630 fw_name = "keyspan/usa28xb.fw";
1631 break;
1632
1633 case keyspan_usa19_pre_product_id:
1634 fw_name = "keyspan/usa19.fw";
1635 break;
1636
1637 case keyspan_usa19qi_pre_product_id:
1638 fw_name = "keyspan/usa19qi.fw";
1639 break;
1640
1641 case keyspan_mpr_pre_product_id:
1642 fw_name = "keyspan/mpr.fw";
1643 break;
1644
1645 case keyspan_usa19qw_pre_product_id:
1646 fw_name = "keyspan/usa19qw.fw";
1647 break;
1648
1649 case keyspan_usa18x_pre_product_id:
1650 fw_name = "keyspan/usa18x.fw";
1651 break;
1652
1653 case keyspan_usa19w_pre_product_id:
1654 fw_name = "keyspan/usa19w.fw";
1655 break;
1656
1657 case keyspan_usa49w_pre_product_id:
1658 fw_name = "keyspan/usa49w.fw";
1659 break;
1660
1661 case keyspan_usa49wlc_pre_product_id:
1662 fw_name = "keyspan/usa49wlc.fw";
1663 break;
1664
1665 default:
1666 dev_err(&serial->dev->dev, "Unknown product ID (%04x)\n",
1667 le16_to_cpu(serial->dev->descriptor.idProduct));
1668 return 1;
1669 }
1670
1671 dev_dbg(&serial->dev->dev, "Uploading Keyspan %s firmware.\n", fw_name);
1672
1673 if (ezusb_fx1_ihex_firmware_download(serial->dev, fw_name) < 0) {
1674 dev_err(&serial->dev->dev, "failed to load firmware \"%s\"\n",
1675 fw_name);
1676 return -ENOENT;
1677 }
1678
1679 /* after downloading firmware Renumeration will occur in a
1680 moment and the new device will bind to the real driver */
1681
1682 /* we don't want this device to have a driver assigned to it. */
1683 return 1;
1684}
1685
1686/* Helper functions used by keyspan_setup_urbs */
1687static struct usb_endpoint_descriptor const *find_ep(struct usb_serial const *serial,
1688 int endpoint)
1689{
1690 struct usb_host_interface *iface_desc;
1691 struct usb_endpoint_descriptor *ep;
1692 int i;
1693
1694 iface_desc = serial->interface->cur_altsetting;
1695 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
1696 ep = &iface_desc->endpoint[i].desc;
1697 if (ep->bEndpointAddress == endpoint)
1698 return ep;
1699 }
1700 dev_warn(&serial->interface->dev, "found no endpoint descriptor for endpoint %x\n",
1701 endpoint);
1702 return NULL;
1703}
1704
1705static struct urb *keyspan_setup_urb(struct usb_serial *serial, int endpoint,
1706 int dir, void *ctx, char *buf, int len,
1707 void (*callback)(struct urb *))
1708{
1709 struct urb *urb;
1710 struct usb_endpoint_descriptor const *ep_desc;
1711 char const *ep_type_name;
1712
1713 if (endpoint == -1)
1714 return NULL; /* endpoint not needed */
1715
1716 dev_dbg(&serial->interface->dev, "%s - alloc for endpoint %x\n",
1717 __func__, endpoint);
1718 urb = usb_alloc_urb(0, GFP_KERNEL); /* No ISO */
1719 if (!urb)
1720 return NULL;
1721
1722 if (endpoint == 0) {
1723 /* control EP filled in when used */
1724 return urb;
1725 }
1726
1727 ep_desc = find_ep(serial, endpoint);
1728 if (!ep_desc) {
1729 usb_free_urb(urb);
1730 return NULL;
1731 }
1732 if (usb_endpoint_xfer_int(ep_desc)) {
1733 ep_type_name = "INT";
1734 usb_fill_int_urb(urb, serial->dev,
1735 usb_sndintpipe(serial->dev, endpoint) | dir,
1736 buf, len, callback, ctx,
1737 ep_desc->bInterval);
1738 } else if (usb_endpoint_xfer_bulk(ep_desc)) {
1739 ep_type_name = "BULK";
1740 usb_fill_bulk_urb(urb, serial->dev,
1741 usb_sndbulkpipe(serial->dev, endpoint) | dir,
1742 buf, len, callback, ctx);
1743 } else {
1744 dev_warn(&serial->interface->dev,
1745 "unsupported endpoint type %x\n",
1746 usb_endpoint_type(ep_desc));
1747 usb_free_urb(urb);
1748 return NULL;
1749 }
1750
1751 dev_dbg(&serial->interface->dev, "%s - using urb %p for %s endpoint %x\n",
1752 __func__, urb, ep_type_name, endpoint);
1753 return urb;
1754}
1755
1756static struct callbacks {
1757 void (*instat_callback)(struct urb *);
1758 void (*glocont_callback)(struct urb *);
1759 void (*indat_callback)(struct urb *);
1760 void (*outdat_callback)(struct urb *);
1761 void (*inack_callback)(struct urb *);
1762 void (*outcont_callback)(struct urb *);
1763} keyspan_callbacks[] = {
1764 {
1765 /* msg_usa26 callbacks */
1766 .instat_callback = usa26_instat_callback,
1767 .glocont_callback = usa26_glocont_callback,
1768 .indat_callback = usa26_indat_callback,
1769 .outdat_callback = usa2x_outdat_callback,
1770 .inack_callback = usa26_inack_callback,
1771 .outcont_callback = usa26_outcont_callback,
1772 }, {
1773 /* msg_usa28 callbacks */
1774 .instat_callback = usa28_instat_callback,
1775 .glocont_callback = usa28_glocont_callback,
1776 .indat_callback = usa28_indat_callback,
1777 .outdat_callback = usa2x_outdat_callback,
1778 .inack_callback = usa28_inack_callback,
1779 .outcont_callback = usa28_outcont_callback,
1780 }, {
1781 /* msg_usa49 callbacks */
1782 .instat_callback = usa49_instat_callback,
1783 .glocont_callback = usa49_glocont_callback,
1784 .indat_callback = usa49_indat_callback,
1785 .outdat_callback = usa2x_outdat_callback,
1786 .inack_callback = usa49_inack_callback,
1787 .outcont_callback = usa49_outcont_callback,
1788 }, {
1789 /* msg_usa90 callbacks */
1790 .instat_callback = usa90_instat_callback,
1791 .glocont_callback = usa28_glocont_callback,
1792 .indat_callback = usa90_indat_callback,
1793 .outdat_callback = usa2x_outdat_callback,
1794 .inack_callback = usa28_inack_callback,
1795 .outcont_callback = usa90_outcont_callback,
1796 }, {
1797 /* msg_usa67 callbacks */
1798 .instat_callback = usa67_instat_callback,
1799 .glocont_callback = usa67_glocont_callback,
1800 .indat_callback = usa26_indat_callback,
1801 .outdat_callback = usa2x_outdat_callback,
1802 .inack_callback = usa26_inack_callback,
1803 .outcont_callback = usa26_outcont_callback,
1804 }
1805};
1806
1807 /* Generic setup urbs function that uses
1808 data in device_details */
1809static void keyspan_setup_urbs(struct usb_serial *serial)
1810{
1811 struct keyspan_serial_private *s_priv;
1812 const struct keyspan_device_details *d_details;
1813 struct callbacks *cback;
1814
1815 s_priv = usb_get_serial_data(serial);
1816 d_details = s_priv->device_details;
1817
1818 /* Setup values for the various callback routines */
1819 cback = &keyspan_callbacks[d_details->msg_format];
1820
1821 /* Allocate and set up urbs for each one that is in use,
1822 starting with instat endpoints */
1823 s_priv->instat_urb = keyspan_setup_urb
1824 (serial, d_details->instat_endpoint, USB_DIR_IN,
1825 serial, s_priv->instat_buf, INSTAT_BUFLEN,
1826 cback->instat_callback);
1827
1828 s_priv->indat_urb = keyspan_setup_urb
1829 (serial, d_details->indat_endpoint, USB_DIR_IN,
1830 serial, s_priv->indat_buf, INDAT49W_BUFLEN,
1831 usa49wg_indat_callback);
1832
1833 s_priv->glocont_urb = keyspan_setup_urb
1834 (serial, d_details->glocont_endpoint, USB_DIR_OUT,
1835 serial, s_priv->glocont_buf, GLOCONT_BUFLEN,
1836 cback->glocont_callback);
1837}
1838
1839/* usa19 function doesn't require prescaler */
1840static int keyspan_usa19_calc_baud(struct usb_serial_port *port,
1841 u32 baud_rate, u32 baudclk, u8 *rate_hi,
1842 u8 *rate_low, u8 *prescaler, int portnum)
1843{
1844 u32 b16, /* baud rate times 16 (actual rate used internally) */
1845 div, /* divisor */
1846 cnt; /* inverse of divisor (programmed into 8051) */
1847
1848 dev_dbg(&port->dev, "%s - %d.\n", __func__, baud_rate);
1849
1850 /* prevent divide by zero... */
1851 b16 = baud_rate * 16L;
1852 if (b16 == 0)
1853 return KEYSPAN_INVALID_BAUD_RATE;
1854 /* Any "standard" rate over 57k6 is marginal on the USA-19
1855 as we run out of divisor resolution. */
1856 if (baud_rate > 57600)
1857 return KEYSPAN_INVALID_BAUD_RATE;
1858
1859 /* calculate the divisor and the counter (its inverse) */
1860 div = baudclk / b16;
1861 if (div == 0)
1862 return KEYSPAN_INVALID_BAUD_RATE;
1863 else
1864 cnt = 0 - div;
1865
1866 if (div > 0xffff)
1867 return KEYSPAN_INVALID_BAUD_RATE;
1868
1869 /* return the counter values if non-null */
1870 if (rate_low)
1871 *rate_low = (u8) (cnt & 0xff);
1872 if (rate_hi)
1873 *rate_hi = (u8) ((cnt >> 8) & 0xff);
1874 if (rate_low && rate_hi)
1875 dev_dbg(&port->dev, "%s - %d %02x %02x.\n",
1876 __func__, baud_rate, *rate_hi, *rate_low);
1877 return KEYSPAN_BAUD_RATE_OK;
1878}
1879
1880/* usa19hs function doesn't require prescaler */
1881static int keyspan_usa19hs_calc_baud(struct usb_serial_port *port,
1882 u32 baud_rate, u32 baudclk, u8 *rate_hi,
1883 u8 *rate_low, u8 *prescaler, int portnum)
1884{
1885 u32 b16, /* baud rate times 16 (actual rate used internally) */
1886 div; /* divisor */
1887
1888 dev_dbg(&port->dev, "%s - %d.\n", __func__, baud_rate);
1889
1890 /* prevent divide by zero... */
1891 b16 = baud_rate * 16L;
1892 if (b16 == 0)
1893 return KEYSPAN_INVALID_BAUD_RATE;
1894
1895 /* calculate the divisor */
1896 div = baudclk / b16;
1897 if (div == 0)
1898 return KEYSPAN_INVALID_BAUD_RATE;
1899
1900 if (div > 0xffff)
1901 return KEYSPAN_INVALID_BAUD_RATE;
1902
1903 /* return the counter values if non-null */
1904 if (rate_low)
1905 *rate_low = (u8) (div & 0xff);
1906
1907 if (rate_hi)
1908 *rate_hi = (u8) ((div >> 8) & 0xff);
1909
1910 if (rate_low && rate_hi)
1911 dev_dbg(&port->dev, "%s - %d %02x %02x.\n",
1912 __func__, baud_rate, *rate_hi, *rate_low);
1913
1914 return KEYSPAN_BAUD_RATE_OK;
1915}
1916
1917static int keyspan_usa19w_calc_baud(struct usb_serial_port *port,
1918 u32 baud_rate, u32 baudclk, u8 *rate_hi,
1919 u8 *rate_low, u8 *prescaler, int portnum)
1920{
1921 u32 b16, /* baud rate times 16 (actual rate used internally) */
1922 clk, /* clock with 13/8 prescaler */
1923 div, /* divisor using 13/8 prescaler */
1924 res, /* resulting baud rate using 13/8 prescaler */
1925 diff, /* error using 13/8 prescaler */
1926 smallest_diff;
1927 u8 best_prescaler;
1928 int i;
1929
1930 dev_dbg(&port->dev, "%s - %d.\n", __func__, baud_rate);
1931
1932 /* prevent divide by zero */
1933 b16 = baud_rate * 16L;
1934 if (b16 == 0)
1935 return KEYSPAN_INVALID_BAUD_RATE;
1936
1937 /* Calculate prescaler by trying them all and looking
1938 for best fit */
1939
1940 /* start with largest possible difference */
1941 smallest_diff = 0xffffffff;
1942
1943 /* 0 is an invalid prescaler, used as a flag */
1944 best_prescaler = 0;
1945
1946 for (i = 8; i <= 0xff; ++i) {
1947 clk = (baudclk * 8) / (u32) i;
1948
1949 div = clk / b16;
1950 if (div == 0)
1951 continue;
1952
1953 res = clk / div;
1954 diff = (res > b16) ? (res-b16) : (b16-res);
1955
1956 if (diff < smallest_diff) {
1957 best_prescaler = i;
1958 smallest_diff = diff;
1959 }
1960 }
1961
1962 if (best_prescaler == 0)
1963 return KEYSPAN_INVALID_BAUD_RATE;
1964
1965 clk = (baudclk * 8) / (u32) best_prescaler;
1966 div = clk / b16;
1967
1968 /* return the divisor and prescaler if non-null */
1969 if (rate_low)
1970 *rate_low = (u8) (div & 0xff);
1971 if (rate_hi)
1972 *rate_hi = (u8) ((div >> 8) & 0xff);
1973 if (prescaler) {
1974 *prescaler = best_prescaler;
1975 /* dev_dbg(&port->dev, "%s - %d %d\n", __func__, *prescaler, div); */
1976 }
1977 return KEYSPAN_BAUD_RATE_OK;
1978}
1979
1980 /* USA-28 supports different maximum baud rates on each port */
1981static int keyspan_usa28_calc_baud(struct usb_serial_port *port,
1982 u32 baud_rate, u32 baudclk, u8 *rate_hi,
1983 u8 *rate_low, u8 *prescaler, int portnum)
1984{
1985 u32 b16, /* baud rate times 16 (actual rate used internally) */
1986 div, /* divisor */
1987 cnt; /* inverse of divisor (programmed into 8051) */
1988
1989 dev_dbg(&port->dev, "%s - %d.\n", __func__, baud_rate);
1990
1991 /* prevent divide by zero */
1992 b16 = baud_rate * 16L;
1993 if (b16 == 0)
1994 return KEYSPAN_INVALID_BAUD_RATE;
1995
1996 /* calculate the divisor and the counter (its inverse) */
1997 div = KEYSPAN_USA28_BAUDCLK / b16;
1998 if (div == 0)
1999 return KEYSPAN_INVALID_BAUD_RATE;
2000 else
2001 cnt = 0 - div;
2002
2003 /* check for out of range, based on portnum,
2004 and return result */
2005 if (portnum == 0) {
2006 if (div > 0xffff)
2007 return KEYSPAN_INVALID_BAUD_RATE;
2008 } else {
2009 if (portnum == 1) {
2010 if (div > 0xff)
2011 return KEYSPAN_INVALID_BAUD_RATE;
2012 } else
2013 return KEYSPAN_INVALID_BAUD_RATE;
2014 }
2015
2016 /* return the counter values if not NULL
2017 (port 1 will ignore retHi) */
2018 if (rate_low)
2019 *rate_low = (u8) (cnt & 0xff);
2020 if (rate_hi)
2021 *rate_hi = (u8) ((cnt >> 8) & 0xff);
2022 dev_dbg(&port->dev, "%s - %d OK.\n", __func__, baud_rate);
2023 return KEYSPAN_BAUD_RATE_OK;
2024}
2025
2026static int keyspan_usa26_send_setup(struct usb_serial *serial,
2027 struct usb_serial_port *port,
2028 int reset_port)
2029{
2030 struct keyspan_usa26_portControlMessage msg;
2031 struct keyspan_serial_private *s_priv;
2032 struct keyspan_port_private *p_priv;
2033 const struct keyspan_device_details *d_details;
2034 struct urb *this_urb;
2035 int device_port, err;
2036
2037 dev_dbg(&port->dev, "%s reset=%d\n", __func__, reset_port);
2038
2039 s_priv = usb_get_serial_data(serial);
2040 p_priv = usb_get_serial_port_data(port);
2041 d_details = s_priv->device_details;
2042 device_port = port->port_number;
2043
2044 this_urb = p_priv->outcont_urb;
2045
2046 /* Make sure we have an urb then send the message */
2047 if (this_urb == NULL) {
2048 dev_dbg(&port->dev, "%s - oops no urb.\n", __func__);
2049 return -1;
2050 }
2051
2052 dev_dbg(&port->dev, "%s - endpoint %x\n",
2053 __func__, usb_pipeendpoint(this_urb->pipe));
2054
2055 /* Save reset port val for resend.
2056 Don't overwrite resend for open/close condition. */
2057 if ((reset_port + 1) > p_priv->resend_cont)
2058 p_priv->resend_cont = reset_port + 1;
2059 if (this_urb->status == -EINPROGRESS) {
2060 /* dev_dbg(&port->dev, "%s - already writing\n", __func__); */
2061 mdelay(5);
2062 return -1;
2063 }
2064
2065 memset(&msg, 0, sizeof(struct keyspan_usa26_portControlMessage));
2066
2067 /* Only set baud rate if it's changed */
2068 if (p_priv->old_baud != p_priv->baud) {
2069 p_priv->old_baud = p_priv->baud;
2070 msg.setClocking = 0xff;
2071 if (d_details->calculate_baud_rate(port, p_priv->baud, d_details->baudclk,
2072 &msg.baudHi, &msg.baudLo, &msg.prescaler,
2073 device_port) == KEYSPAN_INVALID_BAUD_RATE) {
2074 dev_dbg(&port->dev, "%s - Invalid baud rate %d requested, using 9600.\n",
2075 __func__, p_priv->baud);
2076 msg.baudLo = 0;
2077 msg.baudHi = 125; /* Values for 9600 baud */
2078 msg.prescaler = 10;
2079 }
2080 msg.setPrescaler = 0xff;
2081 }
2082
2083 msg.lcr = (p_priv->cflag & CSTOPB) ? STOPBITS_678_2 : STOPBITS_5678_1;
2084 switch (p_priv->cflag & CSIZE) {
2085 case CS5:
2086 msg.lcr |= USA_DATABITS_5;
2087 break;
2088 case CS6:
2089 msg.lcr |= USA_DATABITS_6;
2090 break;
2091 case CS7:
2092 msg.lcr |= USA_DATABITS_7;
2093 break;
2094 case CS8:
2095 msg.lcr |= USA_DATABITS_8;
2096 break;
2097 }
2098 if (p_priv->cflag & PARENB) {
2099 /* note USA_PARITY_NONE == 0 */
2100 msg.lcr |= (p_priv->cflag & PARODD) ?
2101 USA_PARITY_ODD : USA_PARITY_EVEN;
2102 }
2103 msg.setLcr = 0xff;
2104
2105 msg.ctsFlowControl = (p_priv->flow_control == flow_cts);
2106 msg.xonFlowControl = 0;
2107 msg.setFlowControl = 0xff;
2108 msg.forwardingLength = 16;
2109 msg.xonChar = 17;
2110 msg.xoffChar = 19;
2111
2112 /* Opening port */
2113 if (reset_port == 1) {
2114 msg._txOn = 1;
2115 msg._txOff = 0;
2116 msg.txFlush = 0;
2117 msg.txBreak = 0;
2118 msg.rxOn = 1;
2119 msg.rxOff = 0;
2120 msg.rxFlush = 1;
2121 msg.rxForward = 0;
2122 msg.returnStatus = 0;
2123 msg.resetDataToggle = 0xff;
2124 }
2125
2126 /* Closing port */
2127 else if (reset_port == 2) {
2128 msg._txOn = 0;
2129 msg._txOff = 1;
2130 msg.txFlush = 0;
2131 msg.txBreak = 0;
2132 msg.rxOn = 0;
2133 msg.rxOff = 1;
2134 msg.rxFlush = 1;
2135 msg.rxForward = 0;
2136 msg.returnStatus = 0;
2137 msg.resetDataToggle = 0;
2138 }
2139
2140 /* Sending intermediate configs */
2141 else {
2142 msg._txOn = (!p_priv->break_on);
2143 msg._txOff = 0;
2144 msg.txFlush = 0;
2145 msg.txBreak = (p_priv->break_on);
2146 msg.rxOn = 0;
2147 msg.rxOff = 0;
2148 msg.rxFlush = 0;
2149 msg.rxForward = 0;
2150 msg.returnStatus = 0;
2151 msg.resetDataToggle = 0x0;
2152 }
2153
2154 /* Do handshaking outputs */
2155 msg.setTxTriState_setRts = 0xff;
2156 msg.txTriState_rts = p_priv->rts_state;
2157
2158 msg.setHskoa_setDtr = 0xff;
2159 msg.hskoa_dtr = p_priv->dtr_state;
2160
2161 p_priv->resend_cont = 0;
2162 memcpy(this_urb->transfer_buffer, &msg, sizeof(msg));
2163
2164 /* send the data out the device on control endpoint */
2165 this_urb->transfer_buffer_length = sizeof(msg);
2166
2167 err = usb_submit_urb(this_urb, GFP_ATOMIC);
2168 if (err != 0)
2169 dev_dbg(&port->dev, "%s - usb_submit_urb(setup) failed (%d)\n", __func__, err);
2170 return 0;
2171}
2172
2173static int keyspan_usa28_send_setup(struct usb_serial *serial,
2174 struct usb_serial_port *port,
2175 int reset_port)
2176{
2177 struct keyspan_usa28_portControlMessage msg;
2178 struct keyspan_serial_private *s_priv;
2179 struct keyspan_port_private *p_priv;
2180 const struct keyspan_device_details *d_details;
2181 struct urb *this_urb;
2182 int device_port, err;
2183
2184 s_priv = usb_get_serial_data(serial);
2185 p_priv = usb_get_serial_port_data(port);
2186 d_details = s_priv->device_details;
2187 device_port = port->port_number;
2188
2189 /* only do something if we have a bulk out endpoint */
2190 this_urb = p_priv->outcont_urb;
2191 if (this_urb == NULL) {
2192 dev_dbg(&port->dev, "%s - oops no urb.\n", __func__);
2193 return -1;
2194 }
2195
2196 /* Save reset port val for resend.
2197 Don't overwrite resend for open/close condition. */
2198 if ((reset_port + 1) > p_priv->resend_cont)
2199 p_priv->resend_cont = reset_port + 1;
2200 if (this_urb->status == -EINPROGRESS) {
2201 dev_dbg(&port->dev, "%s already writing\n", __func__);
2202 mdelay(5);
2203 return -1;
2204 }
2205
2206 memset(&msg, 0, sizeof(struct keyspan_usa28_portControlMessage));
2207
2208 msg.setBaudRate = 1;
2209 if (d_details->calculate_baud_rate(port, p_priv->baud, d_details->baudclk,
2210 &msg.baudHi, &msg.baudLo, NULL,
2211 device_port) == KEYSPAN_INVALID_BAUD_RATE) {
2212 dev_dbg(&port->dev, "%s - Invalid baud rate requested %d.\n",
2213 __func__, p_priv->baud);
2214 msg.baudLo = 0xff;
2215 msg.baudHi = 0xb2; /* Values for 9600 baud */
2216 }
2217
2218 /* If parity is enabled, we must calculate it ourselves. */
2219 msg.parity = 0; /* XXX for now */
2220
2221 msg.ctsFlowControl = (p_priv->flow_control == flow_cts);
2222 msg.xonFlowControl = 0;
2223
2224 /* Do handshaking outputs, DTR is inverted relative to RTS */
2225 msg.rts = p_priv->rts_state;
2226 msg.dtr = p_priv->dtr_state;
2227
2228 msg.forwardingLength = 16;
2229 msg.forwardMs = 10;
2230 msg.breakThreshold = 45;
2231 msg.xonChar = 17;
2232 msg.xoffChar = 19;
2233
2234 /*msg.returnStatus = 1;
2235 msg.resetDataToggle = 0xff;*/
2236 /* Opening port */
2237 if (reset_port == 1) {
2238 msg._txOn = 1;
2239 msg._txOff = 0;
2240 msg.txFlush = 0;
2241 msg.txForceXoff = 0;
2242 msg.txBreak = 0;
2243 msg.rxOn = 1;
2244 msg.rxOff = 0;
2245 msg.rxFlush = 1;
2246 msg.rxForward = 0;
2247 msg.returnStatus = 0;
2248 msg.resetDataToggle = 0xff;
2249 }
2250 /* Closing port */
2251 else if (reset_port == 2) {
2252 msg._txOn = 0;
2253 msg._txOff = 1;
2254 msg.txFlush = 0;
2255 msg.txForceXoff = 0;
2256 msg.txBreak = 0;
2257 msg.rxOn = 0;
2258 msg.rxOff = 1;
2259 msg.rxFlush = 1;
2260 msg.rxForward = 0;
2261 msg.returnStatus = 0;
2262 msg.resetDataToggle = 0;
2263 }
2264 /* Sending intermediate configs */
2265 else {
2266 msg._txOn = (!p_priv->break_on);
2267 msg._txOff = 0;
2268 msg.txFlush = 0;
2269 msg.txForceXoff = 0;
2270 msg.txBreak = (p_priv->break_on);
2271 msg.rxOn = 0;
2272 msg.rxOff = 0;
2273 msg.rxFlush = 0;
2274 msg.rxForward = 0;
2275 msg.returnStatus = 0;
2276 msg.resetDataToggle = 0x0;
2277 }
2278
2279 p_priv->resend_cont = 0;
2280 memcpy(this_urb->transfer_buffer, &msg, sizeof(msg));
2281
2282 /* send the data out the device on control endpoint */
2283 this_urb->transfer_buffer_length = sizeof(msg);
2284
2285 err = usb_submit_urb(this_urb, GFP_ATOMIC);
2286 if (err != 0)
2287 dev_dbg(&port->dev, "%s - usb_submit_urb(setup) failed\n", __func__);
2288
2289 return 0;
2290}
2291
2292static int keyspan_usa49_send_setup(struct usb_serial *serial,
2293 struct usb_serial_port *port,
2294 int reset_port)
2295{
2296 struct keyspan_usa49_portControlMessage msg;
2297 struct usb_ctrlrequest *dr = NULL;
2298 struct keyspan_serial_private *s_priv;
2299 struct keyspan_port_private *p_priv;
2300 const struct keyspan_device_details *d_details;
2301 struct urb *this_urb;
2302 int err, device_port;
2303
2304 s_priv = usb_get_serial_data(serial);
2305 p_priv = usb_get_serial_port_data(port);
2306 d_details = s_priv->device_details;
2307
2308 this_urb = s_priv->glocont_urb;
2309
2310 /* Work out which port within the device is being setup */
2311 device_port = port->port_number;
2312
2313 /* Make sure we have an urb then send the message */
2314 if (this_urb == NULL) {
2315 dev_dbg(&port->dev, "%s - oops no urb for port.\n", __func__);
2316 return -1;
2317 }
2318
2319 dev_dbg(&port->dev, "%s - endpoint %x (%d)\n",
2320 __func__, usb_pipeendpoint(this_urb->pipe), device_port);
2321
2322 /* Save reset port val for resend.
2323 Don't overwrite resend for open/close condition. */
2324 if ((reset_port + 1) > p_priv->resend_cont)
2325 p_priv->resend_cont = reset_port + 1;
2326
2327 if (this_urb->status == -EINPROGRESS) {
2328 /* dev_dbg(&port->dev, "%s - already writing\n", __func__); */
2329 mdelay(5);
2330 return -1;
2331 }
2332
2333 memset(&msg, 0, sizeof(struct keyspan_usa49_portControlMessage));
2334
2335 msg.portNumber = device_port;
2336
2337 /* Only set baud rate if it's changed */
2338 if (p_priv->old_baud != p_priv->baud) {
2339 p_priv->old_baud = p_priv->baud;
2340 msg.setClocking = 0xff;
2341 if (d_details->calculate_baud_rate(port, p_priv->baud, d_details->baudclk,
2342 &msg.baudHi, &msg.baudLo, &msg.prescaler,
2343 device_port) == KEYSPAN_INVALID_BAUD_RATE) {
2344 dev_dbg(&port->dev, "%s - Invalid baud rate %d requested, using 9600.\n",
2345 __func__, p_priv->baud);
2346 msg.baudLo = 0;
2347 msg.baudHi = 125; /* Values for 9600 baud */
2348 msg.prescaler = 10;
2349 }
2350 /* msg.setPrescaler = 0xff; */
2351 }
2352
2353 msg.lcr = (p_priv->cflag & CSTOPB) ? STOPBITS_678_2 : STOPBITS_5678_1;
2354 switch (p_priv->cflag & CSIZE) {
2355 case CS5:
2356 msg.lcr |= USA_DATABITS_5;
2357 break;
2358 case CS6:
2359 msg.lcr |= USA_DATABITS_6;
2360 break;
2361 case CS7:
2362 msg.lcr |= USA_DATABITS_7;
2363 break;
2364 case CS8:
2365 msg.lcr |= USA_DATABITS_8;
2366 break;
2367 }
2368 if (p_priv->cflag & PARENB) {
2369 /* note USA_PARITY_NONE == 0 */
2370 msg.lcr |= (p_priv->cflag & PARODD) ?
2371 USA_PARITY_ODD : USA_PARITY_EVEN;
2372 }
2373 msg.setLcr = 0xff;
2374
2375 msg.ctsFlowControl = (p_priv->flow_control == flow_cts);
2376 msg.xonFlowControl = 0;
2377 msg.setFlowControl = 0xff;
2378
2379 msg.forwardingLength = 16;
2380 msg.xonChar = 17;
2381 msg.xoffChar = 19;
2382
2383 /* Opening port */
2384 if (reset_port == 1) {
2385 msg._txOn = 1;
2386 msg._txOff = 0;
2387 msg.txFlush = 0;
2388 msg.txBreak = 0;
2389 msg.rxOn = 1;
2390 msg.rxOff = 0;
2391 msg.rxFlush = 1;
2392 msg.rxForward = 0;
2393 msg.returnStatus = 0;
2394 msg.resetDataToggle = 0xff;
2395 msg.enablePort = 1;
2396 msg.disablePort = 0;
2397 }
2398 /* Closing port */
2399 else if (reset_port == 2) {
2400 msg._txOn = 0;
2401 msg._txOff = 1;
2402 msg.txFlush = 0;
2403 msg.txBreak = 0;
2404 msg.rxOn = 0;
2405 msg.rxOff = 1;
2406 msg.rxFlush = 1;
2407 msg.rxForward = 0;
2408 msg.returnStatus = 0;
2409 msg.resetDataToggle = 0;
2410 msg.enablePort = 0;
2411 msg.disablePort = 1;
2412 }
2413 /* Sending intermediate configs */
2414 else {
2415 msg._txOn = (!p_priv->break_on);
2416 msg._txOff = 0;
2417 msg.txFlush = 0;
2418 msg.txBreak = (p_priv->break_on);
2419 msg.rxOn = 0;
2420 msg.rxOff = 0;
2421 msg.rxFlush = 0;
2422 msg.rxForward = 0;
2423 msg.returnStatus = 0;
2424 msg.resetDataToggle = 0x0;
2425 msg.enablePort = 0;
2426 msg.disablePort = 0;
2427 }
2428
2429 /* Do handshaking outputs */
2430 msg.setRts = 0xff;
2431 msg.rts = p_priv->rts_state;
2432
2433 msg.setDtr = 0xff;
2434 msg.dtr = p_priv->dtr_state;
2435
2436 p_priv->resend_cont = 0;
2437
2438 /* if the device is a 49wg, we send control message on usb
2439 control EP 0 */
2440
2441 if (d_details->product_id == keyspan_usa49wg_product_id) {
2442 dr = (void *)(s_priv->ctrl_buf);
2443 dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_OUT;
2444 dr->bRequest = 0xB0; /* 49wg control message */
2445 dr->wValue = 0;
2446 dr->wIndex = 0;
2447 dr->wLength = cpu_to_le16(sizeof(msg));
2448
2449 memcpy(s_priv->glocont_buf, &msg, sizeof(msg));
2450
2451 usb_fill_control_urb(this_urb, serial->dev,
2452 usb_sndctrlpipe(serial->dev, 0),
2453 (unsigned char *)dr, s_priv->glocont_buf,
2454 sizeof(msg), usa49_glocont_callback, serial);
2455
2456 } else {
2457 memcpy(this_urb->transfer_buffer, &msg, sizeof(msg));
2458
2459 /* send the data out the device on control endpoint */
2460 this_urb->transfer_buffer_length = sizeof(msg);
2461 }
2462 err = usb_submit_urb(this_urb, GFP_ATOMIC);
2463 if (err != 0)
2464 dev_dbg(&port->dev, "%s - usb_submit_urb(setup) failed (%d)\n", __func__, err);
2465
2466 return 0;
2467}
2468
2469static int keyspan_usa90_send_setup(struct usb_serial *serial,
2470 struct usb_serial_port *port,
2471 int reset_port)
2472{
2473 struct keyspan_usa90_portControlMessage msg;
2474 struct keyspan_serial_private *s_priv;
2475 struct keyspan_port_private *p_priv;
2476 const struct keyspan_device_details *d_details;
2477 struct urb *this_urb;
2478 int err;
2479 u8 prescaler;
2480
2481 s_priv = usb_get_serial_data(serial);
2482 p_priv = usb_get_serial_port_data(port);
2483 d_details = s_priv->device_details;
2484
2485 /* only do something if we have a bulk out endpoint */
2486 this_urb = p_priv->outcont_urb;
2487 if (this_urb == NULL) {
2488 dev_dbg(&port->dev, "%s - oops no urb.\n", __func__);
2489 return -1;
2490 }
2491
2492 /* Save reset port val for resend.
2493 Don't overwrite resend for open/close condition. */
2494 if ((reset_port + 1) > p_priv->resend_cont)
2495 p_priv->resend_cont = reset_port + 1;
2496 if (this_urb->status == -EINPROGRESS) {
2497 dev_dbg(&port->dev, "%s already writing\n", __func__);
2498 mdelay(5);
2499 return -1;
2500 }
2501
2502 memset(&msg, 0, sizeof(struct keyspan_usa90_portControlMessage));
2503
2504 /* Only set baud rate if it's changed */
2505 if (p_priv->old_baud != p_priv->baud) {
2506 p_priv->old_baud = p_priv->baud;
2507 msg.setClocking = 0x01;
2508 if (d_details->calculate_baud_rate(port, p_priv->baud, d_details->baudclk,
2509 &msg.baudHi, &msg.baudLo, &prescaler, 0) == KEYSPAN_INVALID_BAUD_RATE) {
2510 dev_dbg(&port->dev, "%s - Invalid baud rate %d requested, using 9600.\n",
2511 __func__, p_priv->baud);
2512 p_priv->baud = 9600;
2513 d_details->calculate_baud_rate(port, p_priv->baud, d_details->baudclk,
2514 &msg.baudHi, &msg.baudLo, &prescaler, 0);
2515 }
2516 msg.setRxMode = 1;
2517 msg.setTxMode = 1;
2518 }
2519
2520 /* modes must always be correctly specified */
2521 if (p_priv->baud > 57600) {
2522 msg.rxMode = RXMODE_DMA;
2523 msg.txMode = TXMODE_DMA;
2524 } else {
2525 msg.rxMode = RXMODE_BYHAND;
2526 msg.txMode = TXMODE_BYHAND;
2527 }
2528
2529 msg.lcr = (p_priv->cflag & CSTOPB) ? STOPBITS_678_2 : STOPBITS_5678_1;
2530 switch (p_priv->cflag & CSIZE) {
2531 case CS5:
2532 msg.lcr |= USA_DATABITS_5;
2533 break;
2534 case CS6:
2535 msg.lcr |= USA_DATABITS_6;
2536 break;
2537 case CS7:
2538 msg.lcr |= USA_DATABITS_7;
2539 break;
2540 case CS8:
2541 msg.lcr |= USA_DATABITS_8;
2542 break;
2543 }
2544 if (p_priv->cflag & PARENB) {
2545 /* note USA_PARITY_NONE == 0 */
2546 msg.lcr |= (p_priv->cflag & PARODD) ?
2547 USA_PARITY_ODD : USA_PARITY_EVEN;
2548 }
2549 if (p_priv->old_cflag != p_priv->cflag) {
2550 p_priv->old_cflag = p_priv->cflag;
2551 msg.setLcr = 0x01;
2552 }
2553
2554 if (p_priv->flow_control == flow_cts)
2555 msg.txFlowControl = TXFLOW_CTS;
2556 msg.setTxFlowControl = 0x01;
2557 msg.setRxFlowControl = 0x01;
2558
2559 msg.rxForwardingLength = 16;
2560 msg.rxForwardingTimeout = 16;
2561 msg.txAckSetting = 0;
2562 msg.xonChar = 17;
2563 msg.xoffChar = 19;
2564
2565 /* Opening port */
2566 if (reset_port == 1) {
2567 msg.portEnabled = 1;
2568 msg.rxFlush = 1;
2569 msg.txBreak = (p_priv->break_on);
2570 }
2571 /* Closing port */
2572 else if (reset_port == 2)
2573 msg.portEnabled = 0;
2574 /* Sending intermediate configs */
2575 else {
2576 msg.portEnabled = 1;
2577 msg.txBreak = (p_priv->break_on);
2578 }
2579
2580 /* Do handshaking outputs */
2581 msg.setRts = 0x01;
2582 msg.rts = p_priv->rts_state;
2583
2584 msg.setDtr = 0x01;
2585 msg.dtr = p_priv->dtr_state;
2586
2587 p_priv->resend_cont = 0;
2588 memcpy(this_urb->transfer_buffer, &msg, sizeof(msg));
2589
2590 /* send the data out the device on control endpoint */
2591 this_urb->transfer_buffer_length = sizeof(msg);
2592
2593 err = usb_submit_urb(this_urb, GFP_ATOMIC);
2594 if (err != 0)
2595 dev_dbg(&port->dev, "%s - usb_submit_urb(setup) failed (%d)\n", __func__, err);
2596 return 0;
2597}
2598
2599static int keyspan_usa67_send_setup(struct usb_serial *serial,
2600 struct usb_serial_port *port,
2601 int reset_port)
2602{
2603 struct keyspan_usa67_portControlMessage msg;
2604 struct keyspan_serial_private *s_priv;
2605 struct keyspan_port_private *p_priv;
2606 const struct keyspan_device_details *d_details;
2607 struct urb *this_urb;
2608 int err, device_port;
2609
2610 s_priv = usb_get_serial_data(serial);
2611 p_priv = usb_get_serial_port_data(port);
2612 d_details = s_priv->device_details;
2613
2614 this_urb = s_priv->glocont_urb;
2615
2616 /* Work out which port within the device is being setup */
2617 device_port = port->port_number;
2618
2619 /* Make sure we have an urb then send the message */
2620 if (this_urb == NULL) {
2621 dev_dbg(&port->dev, "%s - oops no urb for port.\n", __func__);
2622 return -1;
2623 }
2624
2625 /* Save reset port val for resend.
2626 Don't overwrite resend for open/close condition. */
2627 if ((reset_port + 1) > p_priv->resend_cont)
2628 p_priv->resend_cont = reset_port + 1;
2629 if (this_urb->status == -EINPROGRESS) {
2630 /* dev_dbg(&port->dev, "%s - already writing\n", __func__); */
2631 mdelay(5);
2632 return -1;
2633 }
2634
2635 memset(&msg, 0, sizeof(struct keyspan_usa67_portControlMessage));
2636
2637 msg.port = device_port;
2638
2639 /* Only set baud rate if it's changed */
2640 if (p_priv->old_baud != p_priv->baud) {
2641 p_priv->old_baud = p_priv->baud;
2642 msg.setClocking = 0xff;
2643 if (d_details->calculate_baud_rate(port, p_priv->baud, d_details->baudclk,
2644 &msg.baudHi, &msg.baudLo, &msg.prescaler,
2645 device_port) == KEYSPAN_INVALID_BAUD_RATE) {
2646 dev_dbg(&port->dev, "%s - Invalid baud rate %d requested, using 9600.\n",
2647 __func__, p_priv->baud);
2648 msg.baudLo = 0;
2649 msg.baudHi = 125; /* Values for 9600 baud */
2650 msg.prescaler = 10;
2651 }
2652 msg.setPrescaler = 0xff;
2653 }
2654
2655 msg.lcr = (p_priv->cflag & CSTOPB) ? STOPBITS_678_2 : STOPBITS_5678_1;
2656 switch (p_priv->cflag & CSIZE) {
2657 case CS5:
2658 msg.lcr |= USA_DATABITS_5;
2659 break;
2660 case CS6:
2661 msg.lcr |= USA_DATABITS_6;
2662 break;
2663 case CS7:
2664 msg.lcr |= USA_DATABITS_7;
2665 break;
2666 case CS8:
2667 msg.lcr |= USA_DATABITS_8;
2668 break;
2669 }
2670 if (p_priv->cflag & PARENB) {
2671 /* note USA_PARITY_NONE == 0 */
2672 msg.lcr |= (p_priv->cflag & PARODD) ?
2673 USA_PARITY_ODD : USA_PARITY_EVEN;
2674 }
2675 msg.setLcr = 0xff;
2676
2677 msg.ctsFlowControl = (p_priv->flow_control == flow_cts);
2678 msg.xonFlowControl = 0;
2679 msg.setFlowControl = 0xff;
2680 msg.forwardingLength = 16;
2681 msg.xonChar = 17;
2682 msg.xoffChar = 19;
2683
2684 if (reset_port == 1) {
2685 /* Opening port */
2686 msg._txOn = 1;
2687 msg._txOff = 0;
2688 msg.txFlush = 0;
2689 msg.txBreak = 0;
2690 msg.rxOn = 1;
2691 msg.rxOff = 0;
2692 msg.rxFlush = 1;
2693 msg.rxForward = 0;
2694 msg.returnStatus = 0;
2695 msg.resetDataToggle = 0xff;
2696 } else if (reset_port == 2) {
2697 /* Closing port */
2698 msg._txOn = 0;
2699 msg._txOff = 1;
2700 msg.txFlush = 0;
2701 msg.txBreak = 0;
2702 msg.rxOn = 0;
2703 msg.rxOff = 1;
2704 msg.rxFlush = 1;
2705 msg.rxForward = 0;
2706 msg.returnStatus = 0;
2707 msg.resetDataToggle = 0;
2708 } else {
2709 /* Sending intermediate configs */
2710 msg._txOn = (!p_priv->break_on);
2711 msg._txOff = 0;
2712 msg.txFlush = 0;
2713 msg.txBreak = (p_priv->break_on);
2714 msg.rxOn = 0;
2715 msg.rxOff = 0;
2716 msg.rxFlush = 0;
2717 msg.rxForward = 0;
2718 msg.returnStatus = 0;
2719 msg.resetDataToggle = 0x0;
2720 }
2721
2722 /* Do handshaking outputs */
2723 msg.setTxTriState_setRts = 0xff;
2724 msg.txTriState_rts = p_priv->rts_state;
2725
2726 msg.setHskoa_setDtr = 0xff;
2727 msg.hskoa_dtr = p_priv->dtr_state;
2728
2729 p_priv->resend_cont = 0;
2730
2731 memcpy(this_urb->transfer_buffer, &msg, sizeof(msg));
2732
2733 /* send the data out the device on control endpoint */
2734 this_urb->transfer_buffer_length = sizeof(msg);
2735
2736 err = usb_submit_urb(this_urb, GFP_ATOMIC);
2737 if (err != 0)
2738 dev_dbg(&port->dev, "%s - usb_submit_urb(setup) failed (%d)\n", __func__, err);
2739 return 0;
2740}
2741
2742static void keyspan_send_setup(struct usb_serial_port *port, int reset_port)
2743{
2744 struct usb_serial *serial = port->serial;
2745 struct keyspan_serial_private *s_priv;
2746 const struct keyspan_device_details *d_details;
2747
2748 s_priv = usb_get_serial_data(serial);
2749 d_details = s_priv->device_details;
2750
2751 switch (d_details->msg_format) {
2752 case msg_usa26:
2753 keyspan_usa26_send_setup(serial, port, reset_port);
2754 break;
2755 case msg_usa28:
2756 keyspan_usa28_send_setup(serial, port, reset_port);
2757 break;
2758 case msg_usa49:
2759 keyspan_usa49_send_setup(serial, port, reset_port);
2760 break;
2761 case msg_usa90:
2762 keyspan_usa90_send_setup(serial, port, reset_port);
2763 break;
2764 case msg_usa67:
2765 keyspan_usa67_send_setup(serial, port, reset_port);
2766 break;
2767 }
2768}
2769
2770
2771/* Gets called by the "real" driver (ie once firmware is loaded
2772 and renumeration has taken place. */
2773static int keyspan_startup(struct usb_serial *serial)
2774{
2775 int i, err;
2776 struct keyspan_serial_private *s_priv;
2777 const struct keyspan_device_details *d_details;
2778
2779 for (i = 0; (d_details = keyspan_devices[i]) != NULL; ++i)
2780 if (d_details->product_id ==
2781 le16_to_cpu(serial->dev->descriptor.idProduct))
2782 break;
2783 if (d_details == NULL) {
2784 dev_err(&serial->dev->dev, "%s - unknown product id %x\n",
2785 __func__, le16_to_cpu(serial->dev->descriptor.idProduct));
2786 return -ENODEV;
2787 }
2788
2789 /* Setup private data for serial driver */
2790 s_priv = kzalloc(sizeof(struct keyspan_serial_private), GFP_KERNEL);
2791 if (!s_priv)
2792 return -ENOMEM;
2793
2794 s_priv->instat_buf = kzalloc(INSTAT_BUFLEN, GFP_KERNEL);
2795 if (!s_priv->instat_buf)
2796 goto err_instat_buf;
2797
2798 s_priv->indat_buf = kzalloc(INDAT49W_BUFLEN, GFP_KERNEL);
2799 if (!s_priv->indat_buf)
2800 goto err_indat_buf;
2801
2802 s_priv->glocont_buf = kzalloc(GLOCONT_BUFLEN, GFP_KERNEL);
2803 if (!s_priv->glocont_buf)
2804 goto err_glocont_buf;
2805
2806 s_priv->ctrl_buf = kzalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL);
2807 if (!s_priv->ctrl_buf)
2808 goto err_ctrl_buf;
2809
2810 s_priv->device_details = d_details;
2811 usb_set_serial_data(serial, s_priv);
2812
2813 keyspan_setup_urbs(serial);
2814
2815 if (s_priv->instat_urb != NULL) {
2816 err = usb_submit_urb(s_priv->instat_urb, GFP_KERNEL);
2817 if (err != 0)
2818 dev_dbg(&serial->dev->dev, "%s - submit instat urb failed %d\n", __func__, err);
2819 }
2820 if (s_priv->indat_urb != NULL) {
2821 err = usb_submit_urb(s_priv->indat_urb, GFP_KERNEL);
2822 if (err != 0)
2823 dev_dbg(&serial->dev->dev, "%s - submit indat urb failed %d\n", __func__, err);
2824 }
2825
2826 return 0;
2827
2828err_ctrl_buf:
2829 kfree(s_priv->glocont_buf);
2830err_glocont_buf:
2831 kfree(s_priv->indat_buf);
2832err_indat_buf:
2833 kfree(s_priv->instat_buf);
2834err_instat_buf:
2835 kfree(s_priv);
2836
2837 return -ENOMEM;
2838}
2839
2840static void keyspan_disconnect(struct usb_serial *serial)
2841{
2842 struct keyspan_serial_private *s_priv;
2843
2844 s_priv = usb_get_serial_data(serial);
2845
2846 usb_kill_urb(s_priv->instat_urb);
2847 usb_kill_urb(s_priv->glocont_urb);
2848 usb_kill_urb(s_priv->indat_urb);
2849}
2850
2851static void keyspan_release(struct usb_serial *serial)
2852{
2853 struct keyspan_serial_private *s_priv;
2854
2855 s_priv = usb_get_serial_data(serial);
2856
2857 /* Make sure to unlink the URBs submitted in attach. */
2858 usb_kill_urb(s_priv->instat_urb);
2859 usb_kill_urb(s_priv->indat_urb);
2860
2861 usb_free_urb(s_priv->instat_urb);
2862 usb_free_urb(s_priv->indat_urb);
2863 usb_free_urb(s_priv->glocont_urb);
2864
2865 kfree(s_priv->ctrl_buf);
2866 kfree(s_priv->glocont_buf);
2867 kfree(s_priv->indat_buf);
2868 kfree(s_priv->instat_buf);
2869
2870 kfree(s_priv);
2871}
2872
2873static int keyspan_port_probe(struct usb_serial_port *port)
2874{
2875 struct usb_serial *serial = port->serial;
2876 struct keyspan_serial_private *s_priv;
2877 struct keyspan_port_private *p_priv;
2878 const struct keyspan_device_details *d_details;
2879 struct callbacks *cback;
2880 int endp;
2881 int port_num;
2882 int i;
2883
2884 s_priv = usb_get_serial_data(serial);
2885 d_details = s_priv->device_details;
2886
2887 p_priv = kzalloc(sizeof(*p_priv), GFP_KERNEL);
2888 if (!p_priv)
2889 return -ENOMEM;
2890
2891 for (i = 0; i < ARRAY_SIZE(p_priv->in_buffer); ++i) {
2892 p_priv->in_buffer[i] = kzalloc(IN_BUFLEN, GFP_KERNEL);
2893 if (!p_priv->in_buffer[i])
2894 goto err_free_in_buffer;
2895 }
2896
2897 for (i = 0; i < ARRAY_SIZE(p_priv->out_buffer); ++i) {
2898 p_priv->out_buffer[i] = kzalloc(OUT_BUFLEN, GFP_KERNEL);
2899 if (!p_priv->out_buffer[i])
2900 goto err_free_out_buffer;
2901 }
2902
2903 p_priv->inack_buffer = kzalloc(INACK_BUFLEN, GFP_KERNEL);
2904 if (!p_priv->inack_buffer)
2905 goto err_free_out_buffer;
2906
2907 p_priv->outcont_buffer = kzalloc(OUTCONT_BUFLEN, GFP_KERNEL);
2908 if (!p_priv->outcont_buffer)
2909 goto err_free_inack_buffer;
2910
2911 p_priv->device_details = d_details;
2912
2913 /* Setup values for the various callback routines */
2914 cback = &keyspan_callbacks[d_details->msg_format];
2915
2916 port_num = port->port_number;
2917
2918 /* Do indat endpoints first, once for each flip */
2919 endp = d_details->indat_endpoints[port_num];
2920 for (i = 0; i <= d_details->indat_endp_flip; ++i, ++endp) {
2921 p_priv->in_urbs[i] = keyspan_setup_urb(serial, endp,
2922 USB_DIR_IN, port,
2923 p_priv->in_buffer[i],
2924 IN_BUFLEN,
2925 cback->indat_callback);
2926 }
2927 /* outdat endpoints also have flip */
2928 endp = d_details->outdat_endpoints[port_num];
2929 for (i = 0; i <= d_details->outdat_endp_flip; ++i, ++endp) {
2930 p_priv->out_urbs[i] = keyspan_setup_urb(serial, endp,
2931 USB_DIR_OUT, port,
2932 p_priv->out_buffer[i],
2933 OUT_BUFLEN,
2934 cback->outdat_callback);
2935 }
2936 /* inack endpoint */
2937 p_priv->inack_urb = keyspan_setup_urb(serial,
2938 d_details->inack_endpoints[port_num],
2939 USB_DIR_IN, port,
2940 p_priv->inack_buffer,
2941 INACK_BUFLEN,
2942 cback->inack_callback);
2943 /* outcont endpoint */
2944 p_priv->outcont_urb = keyspan_setup_urb(serial,
2945 d_details->outcont_endpoints[port_num],
2946 USB_DIR_OUT, port,
2947 p_priv->outcont_buffer,
2948 OUTCONT_BUFLEN,
2949 cback->outcont_callback);
2950
2951 usb_set_serial_port_data(port, p_priv);
2952
2953 return 0;
2954
2955err_free_inack_buffer:
2956 kfree(p_priv->inack_buffer);
2957err_free_out_buffer:
2958 for (i = 0; i < ARRAY_SIZE(p_priv->out_buffer); ++i)
2959 kfree(p_priv->out_buffer[i]);
2960err_free_in_buffer:
2961 for (i = 0; i < ARRAY_SIZE(p_priv->in_buffer); ++i)
2962 kfree(p_priv->in_buffer[i]);
2963 kfree(p_priv);
2964
2965 return -ENOMEM;
2966}
2967
2968static void keyspan_port_remove(struct usb_serial_port *port)
2969{
2970 struct keyspan_port_private *p_priv;
2971 int i;
2972
2973 p_priv = usb_get_serial_port_data(port);
2974
2975 usb_kill_urb(p_priv->inack_urb);
2976 usb_kill_urb(p_priv->outcont_urb);
2977 for (i = 0; i < 2; i++) {
2978 usb_kill_urb(p_priv->in_urbs[i]);
2979 usb_kill_urb(p_priv->out_urbs[i]);
2980 }
2981
2982 usb_free_urb(p_priv->inack_urb);
2983 usb_free_urb(p_priv->outcont_urb);
2984 for (i = 0; i < 2; i++) {
2985 usb_free_urb(p_priv->in_urbs[i]);
2986 usb_free_urb(p_priv->out_urbs[i]);
2987 }
2988
2989 kfree(p_priv->outcont_buffer);
2990 kfree(p_priv->inack_buffer);
2991 for (i = 0; i < ARRAY_SIZE(p_priv->out_buffer); ++i)
2992 kfree(p_priv->out_buffer[i]);
2993 for (i = 0; i < ARRAY_SIZE(p_priv->in_buffer); ++i)
2994 kfree(p_priv->in_buffer[i]);
2995
2996 kfree(p_priv);
2997}
2998
2999/* Structs for the devices, pre and post renumeration. */
3000static struct usb_serial_driver keyspan_pre_device = {
3001 .driver = {
3002 .owner = THIS_MODULE,
3003 .name = "keyspan_no_firm",
3004 },
3005 .description = "Keyspan - (without firmware)",
3006 .id_table = keyspan_pre_ids,
3007 .num_ports = 1,
3008 .attach = keyspan_fake_startup,
3009};
3010
3011static struct usb_serial_driver keyspan_1port_device = {
3012 .driver = {
3013 .owner = THIS_MODULE,
3014 .name = "keyspan_1",
3015 },
3016 .description = "Keyspan 1 port adapter",
3017 .id_table = keyspan_1port_ids,
3018 .num_ports = 1,
3019 .open = keyspan_open,
3020 .close = keyspan_close,
3021 .dtr_rts = keyspan_dtr_rts,
3022 .write = keyspan_write,
3023 .write_room = keyspan_write_room,
3024 .set_termios = keyspan_set_termios,
3025 .break_ctl = keyspan_break_ctl,
3026 .tiocmget = keyspan_tiocmget,
3027 .tiocmset = keyspan_tiocmset,
3028 .attach = keyspan_startup,
3029 .disconnect = keyspan_disconnect,
3030 .release = keyspan_release,
3031 .port_probe = keyspan_port_probe,
3032 .port_remove = keyspan_port_remove,
3033};
3034
3035static struct usb_serial_driver keyspan_2port_device = {
3036 .driver = {
3037 .owner = THIS_MODULE,
3038 .name = "keyspan_2",
3039 },
3040 .description = "Keyspan 2 port adapter",
3041 .id_table = keyspan_2port_ids,
3042 .num_ports = 2,
3043 .open = keyspan_open,
3044 .close = keyspan_close,
3045 .dtr_rts = keyspan_dtr_rts,
3046 .write = keyspan_write,
3047 .write_room = keyspan_write_room,
3048 .set_termios = keyspan_set_termios,
3049 .break_ctl = keyspan_break_ctl,
3050 .tiocmget = keyspan_tiocmget,
3051 .tiocmset = keyspan_tiocmset,
3052 .attach = keyspan_startup,
3053 .disconnect = keyspan_disconnect,
3054 .release = keyspan_release,
3055 .port_probe = keyspan_port_probe,
3056 .port_remove = keyspan_port_remove,
3057};
3058
3059static struct usb_serial_driver keyspan_4port_device = {
3060 .driver = {
3061 .owner = THIS_MODULE,
3062 .name = "keyspan_4",
3063 },
3064 .description = "Keyspan 4 port adapter",
3065 .id_table = keyspan_4port_ids,
3066 .num_ports = 4,
3067 .open = keyspan_open,
3068 .close = keyspan_close,
3069 .dtr_rts = keyspan_dtr_rts,
3070 .write = keyspan_write,
3071 .write_room = keyspan_write_room,
3072 .set_termios = keyspan_set_termios,
3073 .break_ctl = keyspan_break_ctl,
3074 .tiocmget = keyspan_tiocmget,
3075 .tiocmset = keyspan_tiocmset,
3076 .attach = keyspan_startup,
3077 .disconnect = keyspan_disconnect,
3078 .release = keyspan_release,
3079 .port_probe = keyspan_port_probe,
3080 .port_remove = keyspan_port_remove,
3081};
3082
3083static struct usb_serial_driver * const serial_drivers[] = {
3084 &keyspan_pre_device, &keyspan_1port_device,
3085 &keyspan_2port_device, &keyspan_4port_device, NULL
3086};
3087
3088module_usb_serial_driver(serial_drivers, keyspan_ids_combined);
3089
3090MODULE_AUTHOR(DRIVER_AUTHOR);
3091MODULE_DESCRIPTION(DRIVER_DESC);
3092MODULE_LICENSE("GPL");
3093
3094MODULE_FIRMWARE("keyspan/usa28.fw");
3095MODULE_FIRMWARE("keyspan/usa28x.fw");
3096MODULE_FIRMWARE("keyspan/usa28xa.fw");
3097MODULE_FIRMWARE("keyspan/usa28xb.fw");
3098MODULE_FIRMWARE("keyspan/usa19.fw");
3099MODULE_FIRMWARE("keyspan/usa19qi.fw");
3100MODULE_FIRMWARE("keyspan/mpr.fw");
3101MODULE_FIRMWARE("keyspan/usa19qw.fw");
3102MODULE_FIRMWARE("keyspan/usa18x.fw");
3103MODULE_FIRMWARE("keyspan/usa19w.fw");
3104MODULE_FIRMWARE("keyspan/usa49w.fw");
3105MODULE_FIRMWARE("keyspan/usa49wlc.fw");