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1/*
2 * Infinity Unlimited USB Phoenix driver
3 *
4 * Copyright (C) 2010 James Courtier-Dutton (James@superbug.co.uk)
5
6 * Copyright (C) 2007 Alain Degreffe (eczema@ecze.com)
7 *
8 * Original code taken from iuutool (Copyright (C) 2006 Juan Carlos Borrás)
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * And tested with help of WB Electronics
16 *
17 */
18#include <linux/kernel.h>
19#include <linux/errno.h>
20#include <linux/slab.h>
21#include <linux/tty.h>
22#include <linux/tty_driver.h>
23#include <linux/tty_flip.h>
24#include <linux/serial.h>
25#include <linux/module.h>
26#include <linux/moduleparam.h>
27#include <linux/spinlock.h>
28#include <linux/uaccess.h>
29#include <linux/usb.h>
30#include <linux/usb/serial.h>
31#include "iuu_phoenix.h"
32#include <linux/random.h>
33
34#define DRIVER_DESC "Infinity USB Unlimited Phoenix driver"
35
36static const struct usb_device_id id_table[] = {
37 {USB_DEVICE(IUU_USB_VENDOR_ID, IUU_USB_PRODUCT_ID)},
38 {} /* Terminating entry */
39};
40MODULE_DEVICE_TABLE(usb, id_table);
41
42/* turbo parameter */
43static int boost = 100;
44static int clockmode = 1;
45static int cdmode = 1;
46static int iuu_cardin;
47static int iuu_cardout;
48static bool xmas;
49static int vcc_default = 5;
50
51static int iuu_create_sysfs_attrs(struct usb_serial_port *port);
52static int iuu_remove_sysfs_attrs(struct usb_serial_port *port);
53static void read_rxcmd_callback(struct urb *urb);
54
55struct iuu_private {
56 spinlock_t lock; /* store irq state */
57 u8 line_status;
58 int tiostatus; /* store IUART SIGNAL for tiocmget call */
59 u8 reset; /* if 1 reset is needed */
60 int poll; /* number of poll */
61 u8 *writebuf; /* buffer for writing to device */
62 int writelen; /* num of byte to write to device */
63 u8 *buf; /* used for initialize speed */
64 u8 len;
65 int vcc; /* vcc (either 3 or 5 V) */
66 u32 baud;
67 u32 boost;
68 u32 clk;
69};
70
71static int iuu_port_probe(struct usb_serial_port *port)
72{
73 struct iuu_private *priv;
74 int ret;
75
76 priv = kzalloc(sizeof(struct iuu_private), GFP_KERNEL);
77 if (!priv)
78 return -ENOMEM;
79
80 priv->buf = kzalloc(256, GFP_KERNEL);
81 if (!priv->buf) {
82 kfree(priv);
83 return -ENOMEM;
84 }
85
86 priv->writebuf = kzalloc(256, GFP_KERNEL);
87 if (!priv->writebuf) {
88 kfree(priv->buf);
89 kfree(priv);
90 return -ENOMEM;
91 }
92
93 priv->vcc = vcc_default;
94 spin_lock_init(&priv->lock);
95
96 usb_set_serial_port_data(port, priv);
97
98 ret = iuu_create_sysfs_attrs(port);
99 if (ret) {
100 kfree(priv->writebuf);
101 kfree(priv->buf);
102 kfree(priv);
103 return ret;
104 }
105
106 return 0;
107}
108
109static int iuu_port_remove(struct usb_serial_port *port)
110{
111 struct iuu_private *priv = usb_get_serial_port_data(port);
112
113 iuu_remove_sysfs_attrs(port);
114 kfree(priv->writebuf);
115 kfree(priv->buf);
116 kfree(priv);
117
118 return 0;
119}
120
121static int iuu_tiocmset(struct tty_struct *tty,
122 unsigned int set, unsigned int clear)
123{
124 struct usb_serial_port *port = tty->driver_data;
125 struct iuu_private *priv = usb_get_serial_port_data(port);
126 unsigned long flags;
127
128 /* FIXME: locking on tiomstatus */
129 dev_dbg(&port->dev, "%s msg : SET = 0x%04x, CLEAR = 0x%04x\n",
130 __func__, set, clear);
131
132 spin_lock_irqsave(&priv->lock, flags);
133
134 if ((set & TIOCM_RTS) && !(priv->tiostatus == TIOCM_RTS)) {
135 dev_dbg(&port->dev, "%s TIOCMSET RESET called !!!\n", __func__);
136 priv->reset = 1;
137 }
138 if (set & TIOCM_RTS)
139 priv->tiostatus = TIOCM_RTS;
140
141 spin_unlock_irqrestore(&priv->lock, flags);
142 return 0;
143}
144
145/* This is used to provide a carrier detect mechanism
146 * When a card is present, the response is 0x00
147 * When no card , the reader respond with TIOCM_CD
148 * This is known as CD autodetect mechanism
149 */
150static int iuu_tiocmget(struct tty_struct *tty)
151{
152 struct usb_serial_port *port = tty->driver_data;
153 struct iuu_private *priv = usb_get_serial_port_data(port);
154 unsigned long flags;
155 int rc;
156
157 spin_lock_irqsave(&priv->lock, flags);
158 rc = priv->tiostatus;
159 spin_unlock_irqrestore(&priv->lock, flags);
160
161 return rc;
162}
163
164static void iuu_rxcmd(struct urb *urb)
165{
166 struct usb_serial_port *port = urb->context;
167 int result;
168 int status = urb->status;
169
170 if (status) {
171 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
172 /* error stop all */
173 return;
174 }
175
176
177 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
178 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
179 usb_sndbulkpipe(port->serial->dev,
180 port->bulk_out_endpointAddress),
181 port->write_urb->transfer_buffer, 1,
182 read_rxcmd_callback, port);
183 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
184}
185
186static int iuu_reset(struct usb_serial_port *port, u8 wt)
187{
188 struct iuu_private *priv = usb_get_serial_port_data(port);
189 int result;
190 char *buf_ptr = port->write_urb->transfer_buffer;
191
192 /* Prepare the reset sequence */
193
194 *buf_ptr++ = IUU_RST_SET;
195 *buf_ptr++ = IUU_DELAY_MS;
196 *buf_ptr++ = wt;
197 *buf_ptr = IUU_RST_CLEAR;
198
199 /* send the sequence */
200
201 usb_fill_bulk_urb(port->write_urb,
202 port->serial->dev,
203 usb_sndbulkpipe(port->serial->dev,
204 port->bulk_out_endpointAddress),
205 port->write_urb->transfer_buffer, 4, iuu_rxcmd, port);
206 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
207 priv->reset = 0;
208 return result;
209}
210
211/* Status Function
212 * Return value is
213 * 0x00 = no card
214 * 0x01 = smartcard
215 * 0x02 = sim card
216 */
217static void iuu_update_status_callback(struct urb *urb)
218{
219 struct usb_serial_port *port = urb->context;
220 struct iuu_private *priv = usb_get_serial_port_data(port);
221 u8 *st;
222 int status = urb->status;
223
224 if (status) {
225 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
226 /* error stop all */
227 return;
228 }
229
230 st = urb->transfer_buffer;
231 dev_dbg(&port->dev, "%s - enter\n", __func__);
232 if (urb->actual_length == 1) {
233 switch (st[0]) {
234 case 0x1:
235 priv->tiostatus = iuu_cardout;
236 break;
237 case 0x0:
238 priv->tiostatus = iuu_cardin;
239 break;
240 default:
241 priv->tiostatus = iuu_cardin;
242 }
243 }
244 iuu_rxcmd(urb);
245}
246
247static void iuu_status_callback(struct urb *urb)
248{
249 struct usb_serial_port *port = urb->context;
250 int result;
251 int status = urb->status;
252
253 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
254 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
255 usb_rcvbulkpipe(port->serial->dev,
256 port->bulk_in_endpointAddress),
257 port->read_urb->transfer_buffer, 256,
258 iuu_update_status_callback, port);
259 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
260}
261
262static int iuu_status(struct usb_serial_port *port)
263{
264 int result;
265
266 memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1);
267 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
268 usb_sndbulkpipe(port->serial->dev,
269 port->bulk_out_endpointAddress),
270 port->write_urb->transfer_buffer, 1,
271 iuu_status_callback, port);
272 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
273 return result;
274
275}
276
277static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
278{
279 int status;
280 struct usb_serial *serial = port->serial;
281 int actual = 0;
282
283 /* send the data out the bulk port */
284
285 status =
286 usb_bulk_msg(serial->dev,
287 usb_sndbulkpipe(serial->dev,
288 port->bulk_out_endpointAddress), buf,
289 count, &actual, 1000);
290
291 if (status != IUU_OPERATION_OK)
292 dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status);
293 else
294 dev_dbg(&port->dev, "%s - write OK !\n", __func__);
295 return status;
296}
297
298static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
299{
300 int status;
301 struct usb_serial *serial = port->serial;
302 int actual = 0;
303
304 /* send the data out the bulk port */
305 status =
306 usb_bulk_msg(serial->dev,
307 usb_rcvbulkpipe(serial->dev,
308 port->bulk_in_endpointAddress), buf,
309 count, &actual, 1000);
310
311 if (status != IUU_OPERATION_OK)
312 dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status);
313 else
314 dev_dbg(&port->dev, "%s - read OK !\n", __func__);
315 return status;
316}
317
318static int iuu_led(struct usb_serial_port *port, unsigned int R,
319 unsigned int G, unsigned int B, u8 f)
320{
321 int status;
322 u8 *buf;
323 buf = kmalloc(8, GFP_KERNEL);
324 if (!buf)
325 return -ENOMEM;
326
327 buf[0] = IUU_SET_LED;
328 buf[1] = R & 0xFF;
329 buf[2] = (R >> 8) & 0xFF;
330 buf[3] = G & 0xFF;
331 buf[4] = (G >> 8) & 0xFF;
332 buf[5] = B & 0xFF;
333 buf[6] = (B >> 8) & 0xFF;
334 buf[7] = f;
335 status = bulk_immediate(port, buf, 8);
336 kfree(buf);
337 if (status != IUU_OPERATION_OK)
338 dev_dbg(&port->dev, "%s - led error status = %2x\n", __func__, status);
339 else
340 dev_dbg(&port->dev, "%s - led OK !\n", __func__);
341 return IUU_OPERATION_OK;
342}
343
344static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1,
345 u8 b2, u8 freq)
346{
347 *buf++ = IUU_SET_LED;
348 *buf++ = r1;
349 *buf++ = r2;
350 *buf++ = g1;
351 *buf++ = g2;
352 *buf++ = b1;
353 *buf++ = b2;
354 *buf = freq;
355}
356
357static void iuu_led_activity_on(struct urb *urb)
358{
359 struct usb_serial_port *port = urb->context;
360 int result;
361 char *buf_ptr = port->write_urb->transfer_buffer;
362 *buf_ptr++ = IUU_SET_LED;
363 if (xmas) {
364 get_random_bytes(buf_ptr, 6);
365 *(buf_ptr+7) = 1;
366 } else {
367 iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255);
368 }
369
370 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
371 usb_sndbulkpipe(port->serial->dev,
372 port->bulk_out_endpointAddress),
373 port->write_urb->transfer_buffer, 8 ,
374 iuu_rxcmd, port);
375 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
376}
377
378static void iuu_led_activity_off(struct urb *urb)
379{
380 struct usb_serial_port *port = urb->context;
381 int result;
382 char *buf_ptr = port->write_urb->transfer_buffer;
383 if (xmas) {
384 iuu_rxcmd(urb);
385 return;
386 } else {
387 *buf_ptr++ = IUU_SET_LED;
388 iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255);
389 }
390 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
391 usb_sndbulkpipe(port->serial->dev,
392 port->bulk_out_endpointAddress),
393 port->write_urb->transfer_buffer, 8 ,
394 iuu_rxcmd, port);
395 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
396}
397
398
399
400static int iuu_clk(struct usb_serial_port *port, int dwFrq)
401{
402 int status;
403 struct iuu_private *priv = usb_get_serial_port_data(port);
404 int Count = 0;
405 u8 FrqGenAdr = 0x69;
406 u8 DIV = 0; /* 8bit */
407 u8 XDRV = 0; /* 8bit */
408 u8 PUMP = 0; /* 3bit */
409 u8 PBmsb = 0; /* 2bit */
410 u8 PBlsb = 0; /* 8bit */
411 u8 PO = 0; /* 1bit */
412 u8 Q = 0; /* 7bit */
413 /* 24bit = 3bytes */
414 unsigned int P = 0;
415 unsigned int P2 = 0;
416 int frq = (int)dwFrq;
417
418 if (frq == 0) {
419 priv->buf[Count++] = IUU_UART_WRITE_I2C;
420 priv->buf[Count++] = FrqGenAdr << 1;
421 priv->buf[Count++] = 0x09;
422 priv->buf[Count++] = 0x00;
423
424 status = bulk_immediate(port, (u8 *) priv->buf, Count);
425 if (status != 0) {
426 dev_dbg(&port->dev, "%s - write error\n", __func__);
427 return status;
428 }
429 } else if (frq == 3579000) {
430 DIV = 100;
431 P = 1193;
432 Q = 40;
433 XDRV = 0;
434 } else if (frq == 3680000) {
435 DIV = 105;
436 P = 161;
437 Q = 5;
438 XDRV = 0;
439 } else if (frq == 6000000) {
440 DIV = 66;
441 P = 66;
442 Q = 2;
443 XDRV = 0x28;
444 } else {
445 unsigned int result = 0;
446 unsigned int tmp = 0;
447 unsigned int check;
448 unsigned int check2;
449 char found = 0x00;
450 unsigned int lQ = 2;
451 unsigned int lP = 2055;
452 unsigned int lDiv = 4;
453
454 for (lQ = 2; lQ <= 47 && !found; lQ++)
455 for (lP = 2055; lP >= 8 && !found; lP--)
456 for (lDiv = 4; lDiv <= 127 && !found; lDiv++) {
457 tmp = (12000000 / lDiv) * (lP / lQ);
458 if (abs((int)(tmp - frq)) <
459 abs((int)(frq - result))) {
460 check2 = (12000000 / lQ);
461 if (check2 < 250000)
462 continue;
463 check = (12000000 / lQ) * lP;
464 if (check > 400000000)
465 continue;
466 if (check < 100000000)
467 continue;
468 if (lDiv < 4 || lDiv > 127)
469 continue;
470 result = tmp;
471 P = lP;
472 DIV = lDiv;
473 Q = lQ;
474 if (result == frq)
475 found = 0x01;
476 }
477 }
478 }
479 P2 = ((P - PO) / 2) - 4;
480 DIV = DIV;
481 PUMP = 0x04;
482 PBmsb = (P2 >> 8 & 0x03);
483 PBlsb = P2 & 0xFF;
484 PO = (P >> 10) & 0x01;
485 Q = Q - 2;
486
487 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
488 priv->buf[Count++] = FrqGenAdr << 1;
489 priv->buf[Count++] = 0x09;
490 priv->buf[Count++] = 0x20; /* Adr = 0x09 */
491 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
492 priv->buf[Count++] = FrqGenAdr << 1;
493 priv->buf[Count++] = 0x0C;
494 priv->buf[Count++] = DIV; /* Adr = 0x0C */
495 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
496 priv->buf[Count++] = FrqGenAdr << 1;
497 priv->buf[Count++] = 0x12;
498 priv->buf[Count++] = XDRV; /* Adr = 0x12 */
499 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
500 priv->buf[Count++] = FrqGenAdr << 1;
501 priv->buf[Count++] = 0x13;
502 priv->buf[Count++] = 0x6B; /* Adr = 0x13 */
503 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
504 priv->buf[Count++] = FrqGenAdr << 1;
505 priv->buf[Count++] = 0x40;
506 priv->buf[Count++] = (0xC0 | ((PUMP & 0x07) << 2)) |
507 (PBmsb & 0x03); /* Adr = 0x40 */
508 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
509 priv->buf[Count++] = FrqGenAdr << 1;
510 priv->buf[Count++] = 0x41;
511 priv->buf[Count++] = PBlsb; /* Adr = 0x41 */
512 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
513 priv->buf[Count++] = FrqGenAdr << 1;
514 priv->buf[Count++] = 0x42;
515 priv->buf[Count++] = Q | (((PO & 0x01) << 7)); /* Adr = 0x42 */
516 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
517 priv->buf[Count++] = FrqGenAdr << 1;
518 priv->buf[Count++] = 0x44;
519 priv->buf[Count++] = (char)0xFF; /* Adr = 0x44 */
520 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
521 priv->buf[Count++] = FrqGenAdr << 1;
522 priv->buf[Count++] = 0x45;
523 priv->buf[Count++] = (char)0xFE; /* Adr = 0x45 */
524 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
525 priv->buf[Count++] = FrqGenAdr << 1;
526 priv->buf[Count++] = 0x46;
527 priv->buf[Count++] = 0x7F; /* Adr = 0x46 */
528 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
529 priv->buf[Count++] = FrqGenAdr << 1;
530 priv->buf[Count++] = 0x47;
531 priv->buf[Count++] = (char)0x84; /* Adr = 0x47 */
532
533 status = bulk_immediate(port, (u8 *) priv->buf, Count);
534 if (status != IUU_OPERATION_OK)
535 dev_dbg(&port->dev, "%s - write error\n", __func__);
536 return status;
537}
538
539static int iuu_uart_flush(struct usb_serial_port *port)
540{
541 struct device *dev = &port->dev;
542 int i;
543 int status;
544 u8 rxcmd = IUU_UART_RX;
545 struct iuu_private *priv = usb_get_serial_port_data(port);
546
547 if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0)
548 return -EIO;
549
550 for (i = 0; i < 2; i++) {
551 status = bulk_immediate(port, &rxcmd, 1);
552 if (status != IUU_OPERATION_OK) {
553 dev_dbg(dev, "%s - uart_flush_write error\n", __func__);
554 return status;
555 }
556
557 status = read_immediate(port, &priv->len, 1);
558 if (status != IUU_OPERATION_OK) {
559 dev_dbg(dev, "%s - uart_flush_read error\n", __func__);
560 return status;
561 }
562
563 if (priv->len > 0) {
564 dev_dbg(dev, "%s - uart_flush datalen is : %i\n", __func__, priv->len);
565 status = read_immediate(port, priv->buf, priv->len);
566 if (status != IUU_OPERATION_OK) {
567 dev_dbg(dev, "%s - uart_flush_read error\n", __func__);
568 return status;
569 }
570 }
571 }
572 dev_dbg(dev, "%s - uart_flush_read OK!\n", __func__);
573 iuu_led(port, 0, 0xF000, 0, 0xFF);
574 return status;
575}
576
577static void read_buf_callback(struct urb *urb)
578{
579 struct usb_serial_port *port = urb->context;
580 unsigned char *data = urb->transfer_buffer;
581 int status = urb->status;
582
583 if (status) {
584 if (status == -EPROTO) {
585 /* reschedule needed */
586 }
587 return;
588 }
589
590 dev_dbg(&port->dev, "%s - %i chars to write\n", __func__, urb->actual_length);
591 if (data == NULL)
592 dev_dbg(&port->dev, "%s - data is NULL !!!\n", __func__);
593 if (urb->actual_length && data) {
594 tty_insert_flip_string(&port->port, data, urb->actual_length);
595 tty_flip_buffer_push(&port->port);
596 }
597 iuu_led_activity_on(urb);
598}
599
600static int iuu_bulk_write(struct usb_serial_port *port)
601{
602 struct iuu_private *priv = usb_get_serial_port_data(port);
603 unsigned long flags;
604 int result;
605 int buf_len;
606 char *buf_ptr = port->write_urb->transfer_buffer;
607
608 spin_lock_irqsave(&priv->lock, flags);
609 *buf_ptr++ = IUU_UART_ESC;
610 *buf_ptr++ = IUU_UART_TX;
611 *buf_ptr++ = priv->writelen;
612
613 memcpy(buf_ptr, priv->writebuf, priv->writelen);
614 buf_len = priv->writelen;
615 priv->writelen = 0;
616 spin_unlock_irqrestore(&priv->lock, flags);
617 dev_dbg(&port->dev, "%s - writing %i chars : %*ph\n", __func__,
618 buf_len, buf_len, buf_ptr);
619 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
620 usb_sndbulkpipe(port->serial->dev,
621 port->bulk_out_endpointAddress),
622 port->write_urb->transfer_buffer, buf_len + 3,
623 iuu_rxcmd, port);
624 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
625 usb_serial_port_softint(port);
626 return result;
627}
628
629static int iuu_read_buf(struct usb_serial_port *port, int len)
630{
631 int result;
632
633 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
634 usb_rcvbulkpipe(port->serial->dev,
635 port->bulk_in_endpointAddress),
636 port->read_urb->transfer_buffer, len,
637 read_buf_callback, port);
638 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
639 return result;
640}
641
642static void iuu_uart_read_callback(struct urb *urb)
643{
644 struct usb_serial_port *port = urb->context;
645 struct iuu_private *priv = usb_get_serial_port_data(port);
646 unsigned long flags;
647 int status = urb->status;
648 int error = 0;
649 int len = 0;
650 unsigned char *data = urb->transfer_buffer;
651 priv->poll++;
652
653 if (status) {
654 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
655 /* error stop all */
656 return;
657 }
658 if (data == NULL)
659 dev_dbg(&port->dev, "%s - data is NULL !!!\n", __func__);
660
661 if (urb->actual_length == 1 && data != NULL)
662 len = (int) data[0];
663
664 if (urb->actual_length > 1) {
665 dev_dbg(&port->dev, "%s - urb->actual_length = %i\n", __func__,
666 urb->actual_length);
667 error = 1;
668 return;
669 }
670 /* if len > 0 call readbuf */
671
672 if (len > 0 && error == 0) {
673 dev_dbg(&port->dev, "%s - call read buf - len to read is %i\n",
674 __func__, len);
675 status = iuu_read_buf(port, len);
676 return;
677 }
678 /* need to update status ? */
679 if (priv->poll > 99) {
680 status = iuu_status(port);
681 priv->poll = 0;
682 return;
683 }
684
685 /* reset waiting ? */
686
687 if (priv->reset == 1) {
688 status = iuu_reset(port, 0xC);
689 return;
690 }
691 /* Writebuf is waiting */
692 spin_lock_irqsave(&priv->lock, flags);
693 if (priv->writelen > 0) {
694 spin_unlock_irqrestore(&priv->lock, flags);
695 status = iuu_bulk_write(port);
696 return;
697 }
698 spin_unlock_irqrestore(&priv->lock, flags);
699 /* if nothing to write call again rxcmd */
700 dev_dbg(&port->dev, "%s - rxcmd recall\n", __func__);
701 iuu_led_activity_off(urb);
702}
703
704static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port,
705 const u8 *buf, int count)
706{
707 struct iuu_private *priv = usb_get_serial_port_data(port);
708 unsigned long flags;
709
710 if (count > 256)
711 return -ENOMEM;
712
713 spin_lock_irqsave(&priv->lock, flags);
714
715 /* fill the buffer */
716 memcpy(priv->writebuf + priv->writelen, buf, count);
717 priv->writelen += count;
718 spin_unlock_irqrestore(&priv->lock, flags);
719
720 return count;
721}
722
723static void read_rxcmd_callback(struct urb *urb)
724{
725 struct usb_serial_port *port = urb->context;
726 int result;
727 int status = urb->status;
728
729 if (status) {
730 /* error stop all */
731 return;
732 }
733
734 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
735 usb_rcvbulkpipe(port->serial->dev,
736 port->bulk_in_endpointAddress),
737 port->read_urb->transfer_buffer, 256,
738 iuu_uart_read_callback, port);
739 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
740 dev_dbg(&port->dev, "%s - submit result = %d\n", __func__, result);
741}
742
743static int iuu_uart_on(struct usb_serial_port *port)
744{
745 int status;
746 u8 *buf;
747
748 buf = kmalloc(sizeof(u8) * 4, GFP_KERNEL);
749
750 if (!buf)
751 return -ENOMEM;
752
753 buf[0] = IUU_UART_ENABLE;
754 buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF);
755 buf[2] = (u8) (0x00FF & IUU_BAUD_9600);
756 buf[3] = (u8) (0x0F0 & IUU_ONE_STOP_BIT) | (0x07 & IUU_PARITY_EVEN);
757
758 status = bulk_immediate(port, buf, 4);
759 if (status != IUU_OPERATION_OK) {
760 dev_dbg(&port->dev, "%s - uart_on error\n", __func__);
761 goto uart_enable_failed;
762 }
763 /* iuu_reset() the card after iuu_uart_on() */
764 status = iuu_uart_flush(port);
765 if (status != IUU_OPERATION_OK)
766 dev_dbg(&port->dev, "%s - uart_flush error\n", __func__);
767uart_enable_failed:
768 kfree(buf);
769 return status;
770}
771
772/* Disables the IUU UART (a.k.a. the Phoenix voiderface) */
773static int iuu_uart_off(struct usb_serial_port *port)
774{
775 int status;
776 u8 *buf;
777 buf = kmalloc(1, GFP_KERNEL);
778 if (!buf)
779 return -ENOMEM;
780 buf[0] = IUU_UART_DISABLE;
781
782 status = bulk_immediate(port, buf, 1);
783 if (status != IUU_OPERATION_OK)
784 dev_dbg(&port->dev, "%s - uart_off error\n", __func__);
785
786 kfree(buf);
787 return status;
788}
789
790static int iuu_uart_baud(struct usb_serial_port *port, u32 baud_base,
791 u32 *actual, u8 parity)
792{
793 int status;
794 u32 baud;
795 u8 *dataout;
796 u8 DataCount = 0;
797 u8 T1Frekvens = 0;
798 u8 T1reload = 0;
799 unsigned int T1FrekvensHZ = 0;
800
801 dev_dbg(&port->dev, "%s - enter baud_base=%d\n", __func__, baud_base);
802 dataout = kmalloc(sizeof(u8) * 5, GFP_KERNEL);
803
804 if (!dataout)
805 return -ENOMEM;
806 /*baud = (((priv->clk / 35) * baud_base) / 100000); */
807 baud = baud_base;
808
809 if (baud < 1200 || baud > 230400) {
810 kfree(dataout);
811 return IUU_INVALID_PARAMETER;
812 }
813 if (baud > 977) {
814 T1Frekvens = 3;
815 T1FrekvensHZ = 500000;
816 }
817
818 if (baud > 3906) {
819 T1Frekvens = 2;
820 T1FrekvensHZ = 2000000;
821 }
822
823 if (baud > 11718) {
824 T1Frekvens = 1;
825 T1FrekvensHZ = 6000000;
826 }
827
828 if (baud > 46875) {
829 T1Frekvens = 0;
830 T1FrekvensHZ = 24000000;
831 }
832
833 T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2));
834
835 /* magic number here: ENTER_FIRMWARE_UPDATE; */
836 dataout[DataCount++] = IUU_UART_ESC;
837 /* magic number here: CHANGE_BAUD; */
838 dataout[DataCount++] = IUU_UART_CHANGE;
839 dataout[DataCount++] = T1Frekvens;
840 dataout[DataCount++] = T1reload;
841
842 *actual = (T1FrekvensHZ / (256 - T1reload)) / 2;
843
844 switch (parity & 0x0F) {
845 case IUU_PARITY_NONE:
846 dataout[DataCount++] = 0x00;
847 break;
848 case IUU_PARITY_EVEN:
849 dataout[DataCount++] = 0x01;
850 break;
851 case IUU_PARITY_ODD:
852 dataout[DataCount++] = 0x02;
853 break;
854 case IUU_PARITY_MARK:
855 dataout[DataCount++] = 0x03;
856 break;
857 case IUU_PARITY_SPACE:
858 dataout[DataCount++] = 0x04;
859 break;
860 default:
861 kfree(dataout);
862 return IUU_INVALID_PARAMETER;
863 break;
864 }
865
866 switch (parity & 0xF0) {
867 case IUU_ONE_STOP_BIT:
868 dataout[DataCount - 1] |= IUU_ONE_STOP_BIT;
869 break;
870
871 case IUU_TWO_STOP_BITS:
872 dataout[DataCount - 1] |= IUU_TWO_STOP_BITS;
873 break;
874 default:
875 kfree(dataout);
876 return IUU_INVALID_PARAMETER;
877 break;
878 }
879
880 status = bulk_immediate(port, dataout, DataCount);
881 if (status != IUU_OPERATION_OK)
882 dev_dbg(&port->dev, "%s - uart_off error\n", __func__);
883 kfree(dataout);
884 return status;
885}
886
887static void iuu_set_termios(struct tty_struct *tty,
888 struct usb_serial_port *port, struct ktermios *old_termios)
889{
890 const u32 supported_mask = CMSPAR|PARENB|PARODD;
891 struct iuu_private *priv = usb_get_serial_port_data(port);
892 unsigned int cflag = tty->termios.c_cflag;
893 int status;
894 u32 actual;
895 u32 parity;
896 int csize = CS7;
897 int baud;
898 u32 newval = cflag & supported_mask;
899
900 /* Just use the ospeed. ispeed should be the same. */
901 baud = tty->termios.c_ospeed;
902
903 dev_dbg(&port->dev, "%s - enter c_ospeed or baud=%d\n", __func__, baud);
904
905 /* compute the parity parameter */
906 parity = 0;
907 if (cflag & CMSPAR) { /* Using mark space */
908 if (cflag & PARODD)
909 parity |= IUU_PARITY_SPACE;
910 else
911 parity |= IUU_PARITY_MARK;
912 } else if (!(cflag & PARENB)) {
913 parity |= IUU_PARITY_NONE;
914 csize = CS8;
915 } else if (cflag & PARODD)
916 parity |= IUU_PARITY_ODD;
917 else
918 parity |= IUU_PARITY_EVEN;
919
920 parity |= (cflag & CSTOPB ? IUU_TWO_STOP_BITS : IUU_ONE_STOP_BIT);
921
922 /* set it */
923 status = iuu_uart_baud(port,
924 baud * priv->boost / 100,
925 &actual, parity);
926
927 /* set the termios value to the real one, so the user now what has
928 * changed. We support few fields so its easies to copy the old hw
929 * settings back over and then adjust them
930 */
931 if (old_termios)
932 tty_termios_copy_hw(&tty->termios, old_termios);
933 if (status != 0) /* Set failed - return old bits */
934 return;
935 /* Re-encode speed, parity and csize */
936 tty_encode_baud_rate(tty, baud, baud);
937 tty->termios.c_cflag &= ~(supported_mask|CSIZE);
938 tty->termios.c_cflag |= newval | csize;
939}
940
941static void iuu_close(struct usb_serial_port *port)
942{
943 /* iuu_led (port,255,0,0,0); */
944
945 iuu_uart_off(port);
946
947 usb_kill_urb(port->write_urb);
948 usb_kill_urb(port->read_urb);
949
950 iuu_led(port, 0, 0, 0xF000, 0xFF);
951}
952
953static void iuu_init_termios(struct tty_struct *tty)
954{
955 tty->termios = tty_std_termios;
956 tty->termios.c_cflag = CLOCAL | CREAD | CS8 | B9600
957 | TIOCM_CTS | CSTOPB | PARENB;
958 tty->termios.c_ispeed = 9600;
959 tty->termios.c_ospeed = 9600;
960 tty->termios.c_lflag = 0;
961 tty->termios.c_oflag = 0;
962 tty->termios.c_iflag = 0;
963}
964
965static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port)
966{
967 struct usb_serial *serial = port->serial;
968 struct device *dev = &port->dev;
969 u8 *buf;
970 int result;
971 int baud;
972 u32 actual;
973 struct iuu_private *priv = usb_get_serial_port_data(port);
974
975 baud = tty->termios.c_ospeed;
976 tty->termios.c_ispeed = baud;
977 /* Re-encode speed */
978 tty_encode_baud_rate(tty, baud, baud);
979
980 dev_dbg(dev, "%s - baud %d\n", __func__, baud);
981 usb_clear_halt(serial->dev, port->write_urb->pipe);
982 usb_clear_halt(serial->dev, port->read_urb->pipe);
983
984 buf = kmalloc(10, GFP_KERNEL);
985 if (buf == NULL)
986 return -ENOMEM;
987
988 priv->poll = 0;
989
990 /* initialize writebuf */
991#define FISH(a, b, c, d) do { \
992 result = usb_control_msg(port->serial->dev, \
993 usb_rcvctrlpipe(port->serial->dev, 0), \
994 b, a, c, d, buf, 1, 1000); \
995 dev_dbg(dev, "0x%x:0x%x:0x%x:0x%x %d - %x\n", a, b, c, d, result, \
996 buf[0]); } while (0);
997
998#define SOUP(a, b, c, d) do { \
999 result = usb_control_msg(port->serial->dev, \
1000 usb_sndctrlpipe(port->serial->dev, 0), \
1001 b, a, c, d, NULL, 0, 1000); \
1002 dev_dbg(dev, "0x%x:0x%x:0x%x:0x%x %d\n", a, b, c, d, result); } while (0)
1003
1004 /* This is not UART related but IUU USB driver related or something */
1005 /* like that. Basically no IUU will accept any commands from the USB */
1006 /* host unless it has received the following message */
1007 /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */
1008
1009 SOUP(0x03, 0x02, 0x02, 0x0);
1010 kfree(buf);
1011 iuu_led(port, 0xF000, 0xF000, 0, 0xFF);
1012 iuu_uart_on(port);
1013 if (boost < 100)
1014 boost = 100;
1015 priv->boost = boost;
1016 priv->baud = baud;
1017 switch (clockmode) {
1018 case 2: /* 3.680 Mhz */
1019 priv->clk = IUU_CLK_3680000;
1020 iuu_clk(port, IUU_CLK_3680000 * boost / 100);
1021 result =
1022 iuu_uart_baud(port, baud * boost / 100, &actual,
1023 IUU_PARITY_EVEN);
1024 break;
1025 case 3: /* 6.00 Mhz */
1026 iuu_clk(port, IUU_CLK_6000000 * boost / 100);
1027 priv->clk = IUU_CLK_6000000;
1028 /* Ratio of 6000000 to 3500000 for baud 9600 */
1029 result =
1030 iuu_uart_baud(port, 16457 * boost / 100, &actual,
1031 IUU_PARITY_EVEN);
1032 break;
1033 default: /* 3.579 Mhz */
1034 iuu_clk(port, IUU_CLK_3579000 * boost / 100);
1035 priv->clk = IUU_CLK_3579000;
1036 result =
1037 iuu_uart_baud(port, baud * boost / 100, &actual,
1038 IUU_PARITY_EVEN);
1039 }
1040
1041 /* set the cardin cardout signals */
1042 switch (cdmode) {
1043 case 0:
1044 iuu_cardin = 0;
1045 iuu_cardout = 0;
1046 break;
1047 case 1:
1048 iuu_cardin = TIOCM_CD;
1049 iuu_cardout = 0;
1050 break;
1051 case 2:
1052 iuu_cardin = 0;
1053 iuu_cardout = TIOCM_CD;
1054 break;
1055 case 3:
1056 iuu_cardin = TIOCM_DSR;
1057 iuu_cardout = 0;
1058 break;
1059 case 4:
1060 iuu_cardin = 0;
1061 iuu_cardout = TIOCM_DSR;
1062 break;
1063 case 5:
1064 iuu_cardin = TIOCM_CTS;
1065 iuu_cardout = 0;
1066 break;
1067 case 6:
1068 iuu_cardin = 0;
1069 iuu_cardout = TIOCM_CTS;
1070 break;
1071 case 7:
1072 iuu_cardin = TIOCM_RNG;
1073 iuu_cardout = 0;
1074 break;
1075 case 8:
1076 iuu_cardin = 0;
1077 iuu_cardout = TIOCM_RNG;
1078 }
1079
1080 iuu_uart_flush(port);
1081
1082 dev_dbg(dev, "%s - initialization done\n", __func__);
1083
1084 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
1085 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1086 usb_sndbulkpipe(port->serial->dev,
1087 port->bulk_out_endpointAddress),
1088 port->write_urb->transfer_buffer, 1,
1089 read_rxcmd_callback, port);
1090 result = usb_submit_urb(port->write_urb, GFP_KERNEL);
1091 if (result) {
1092 dev_err(dev, "%s - failed submitting read urb, error %d\n", __func__, result);
1093 iuu_close(port);
1094 } else {
1095 dev_dbg(dev, "%s - rxcmd OK\n", __func__);
1096 }
1097
1098 return result;
1099}
1100
1101/* how to change VCC */
1102static int iuu_vcc_set(struct usb_serial_port *port, unsigned int vcc)
1103{
1104 int status;
1105 u8 *buf;
1106
1107 buf = kmalloc(5, GFP_KERNEL);
1108 if (!buf)
1109 return -ENOMEM;
1110
1111 buf[0] = IUU_SET_VCC;
1112 buf[1] = vcc & 0xFF;
1113 buf[2] = (vcc >> 8) & 0xFF;
1114 buf[3] = (vcc >> 16) & 0xFF;
1115 buf[4] = (vcc >> 24) & 0xFF;
1116
1117 status = bulk_immediate(port, buf, 5);
1118 kfree(buf);
1119
1120 if (status != IUU_OPERATION_OK)
1121 dev_dbg(&port->dev, "%s - vcc error status = %2x\n", __func__, status);
1122 else
1123 dev_dbg(&port->dev, "%s - vcc OK !\n", __func__);
1124
1125 return status;
1126}
1127
1128/*
1129 * Sysfs Attributes
1130 */
1131
1132static ssize_t vcc_mode_show(struct device *dev,
1133 struct device_attribute *attr, char *buf)
1134{
1135 struct usb_serial_port *port = to_usb_serial_port(dev);
1136 struct iuu_private *priv = usb_get_serial_port_data(port);
1137
1138 return sprintf(buf, "%d\n", priv->vcc);
1139}
1140
1141static ssize_t vcc_mode_store(struct device *dev,
1142 struct device_attribute *attr, const char *buf, size_t count)
1143{
1144 struct usb_serial_port *port = to_usb_serial_port(dev);
1145 struct iuu_private *priv = usb_get_serial_port_data(port);
1146 unsigned long v;
1147
1148 if (kstrtoul(buf, 10, &v)) {
1149 dev_err(dev, "%s - vcc_mode: %s is not a unsigned long\n",
1150 __func__, buf);
1151 goto fail_store_vcc_mode;
1152 }
1153
1154 dev_dbg(dev, "%s: setting vcc_mode = %ld\n", __func__, v);
1155
1156 if ((v != 3) && (v != 5)) {
1157 dev_err(dev, "%s - vcc_mode %ld is invalid\n", __func__, v);
1158 } else {
1159 iuu_vcc_set(port, v);
1160 priv->vcc = v;
1161 }
1162fail_store_vcc_mode:
1163 return count;
1164}
1165static DEVICE_ATTR_RW(vcc_mode);
1166
1167static int iuu_create_sysfs_attrs(struct usb_serial_port *port)
1168{
1169 return device_create_file(&port->dev, &dev_attr_vcc_mode);
1170}
1171
1172static int iuu_remove_sysfs_attrs(struct usb_serial_port *port)
1173{
1174 device_remove_file(&port->dev, &dev_attr_vcc_mode);
1175 return 0;
1176}
1177
1178/*
1179 * End Sysfs Attributes
1180 */
1181
1182static struct usb_serial_driver iuu_device = {
1183 .driver = {
1184 .owner = THIS_MODULE,
1185 .name = "iuu_phoenix",
1186 },
1187 .id_table = id_table,
1188 .num_ports = 1,
1189 .bulk_in_size = 512,
1190 .bulk_out_size = 512,
1191 .open = iuu_open,
1192 .close = iuu_close,
1193 .write = iuu_uart_write,
1194 .read_bulk_callback = iuu_uart_read_callback,
1195 .tiocmget = iuu_tiocmget,
1196 .tiocmset = iuu_tiocmset,
1197 .set_termios = iuu_set_termios,
1198 .init_termios = iuu_init_termios,
1199 .port_probe = iuu_port_probe,
1200 .port_remove = iuu_port_remove,
1201};
1202
1203static struct usb_serial_driver * const serial_drivers[] = {
1204 &iuu_device, NULL
1205};
1206
1207module_usb_serial_driver(serial_drivers, id_table);
1208
1209MODULE_AUTHOR("Alain Degreffe eczema@ecze.com");
1210
1211MODULE_DESCRIPTION(DRIVER_DESC);
1212MODULE_LICENSE("GPL");
1213
1214module_param(xmas, bool, S_IRUGO | S_IWUSR);
1215MODULE_PARM_DESC(xmas, "Xmas colors enabled or not");
1216
1217module_param(boost, int, S_IRUGO | S_IWUSR);
1218MODULE_PARM_DESC(boost, "Card overclock boost (in percent 100-500)");
1219
1220module_param(clockmode, int, S_IRUGO | S_IWUSR);
1221MODULE_PARM_DESC(clockmode, "Card clock mode (1=3.579 MHz, 2=3.680 MHz, "
1222 "3=6 Mhz)");
1223
1224module_param(cdmode, int, S_IRUGO | S_IWUSR);
1225MODULE_PARM_DESC(cdmode, "Card detect mode (0=none, 1=CD, 2=!CD, 3=DSR, "
1226 "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING)");
1227
1228module_param(vcc_default, int, S_IRUGO | S_IWUSR);
1229MODULE_PARM_DESC(vcc_default, "Set default VCC (either 3 for 3.3V or 5 "
1230 "for 5V). Default to 5.");
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Infinity Unlimited USB Phoenix driver
4 *
5 * Copyright (C) 2010 James Courtier-Dutton (James@superbug.co.uk)
6
7 * Copyright (C) 2007 Alain Degreffe (eczema@ecze.com)
8 *
9 * Original code taken from iuutool (Copyright (C) 2006 Juan Carlos Borrás)
10 *
11 * And tested with help of WB Electronics
12 */
13#include <linux/kernel.h>
14#include <linux/errno.h>
15#include <linux/slab.h>
16#include <linux/tty.h>
17#include <linux/tty_driver.h>
18#include <linux/tty_flip.h>
19#include <linux/serial.h>
20#include <linux/module.h>
21#include <linux/moduleparam.h>
22#include <linux/spinlock.h>
23#include <linux/uaccess.h>
24#include <linux/usb.h>
25#include <linux/usb/serial.h>
26#include "iuu_phoenix.h"
27#include <linux/random.h>
28
29#define DRIVER_DESC "Infinity USB Unlimited Phoenix driver"
30
31static const struct usb_device_id id_table[] = {
32 {USB_DEVICE(IUU_USB_VENDOR_ID, IUU_USB_PRODUCT_ID)},
33 {} /* Terminating entry */
34};
35MODULE_DEVICE_TABLE(usb, id_table);
36
37/* turbo parameter */
38static int boost = 100;
39static int clockmode = 1;
40static int cdmode = 1;
41static int iuu_cardin;
42static int iuu_cardout;
43static bool xmas;
44static int vcc_default = 5;
45
46static int iuu_create_sysfs_attrs(struct usb_serial_port *port);
47static int iuu_remove_sysfs_attrs(struct usb_serial_port *port);
48static void read_rxcmd_callback(struct urb *urb);
49
50struct iuu_private {
51 spinlock_t lock; /* store irq state */
52 u8 line_status;
53 int tiostatus; /* store IUART SIGNAL for tiocmget call */
54 u8 reset; /* if 1 reset is needed */
55 int poll; /* number of poll */
56 u8 *writebuf; /* buffer for writing to device */
57 int writelen; /* num of byte to write to device */
58 u8 *buf; /* used for initialize speed */
59 u8 len;
60 int vcc; /* vcc (either 3 or 5 V) */
61 u32 boost;
62 u32 clk;
63};
64
65static int iuu_port_probe(struct usb_serial_port *port)
66{
67 struct iuu_private *priv;
68 int ret;
69
70 priv = kzalloc(sizeof(struct iuu_private), GFP_KERNEL);
71 if (!priv)
72 return -ENOMEM;
73
74 priv->buf = kzalloc(256, GFP_KERNEL);
75 if (!priv->buf) {
76 kfree(priv);
77 return -ENOMEM;
78 }
79
80 priv->writebuf = kzalloc(256, GFP_KERNEL);
81 if (!priv->writebuf) {
82 kfree(priv->buf);
83 kfree(priv);
84 return -ENOMEM;
85 }
86
87 priv->vcc = vcc_default;
88 spin_lock_init(&priv->lock);
89
90 usb_set_serial_port_data(port, priv);
91
92 ret = iuu_create_sysfs_attrs(port);
93 if (ret) {
94 kfree(priv->writebuf);
95 kfree(priv->buf);
96 kfree(priv);
97 return ret;
98 }
99
100 return 0;
101}
102
103static int iuu_port_remove(struct usb_serial_port *port)
104{
105 struct iuu_private *priv = usb_get_serial_port_data(port);
106
107 iuu_remove_sysfs_attrs(port);
108 kfree(priv->writebuf);
109 kfree(priv->buf);
110 kfree(priv);
111
112 return 0;
113}
114
115static int iuu_tiocmset(struct tty_struct *tty,
116 unsigned int set, unsigned int clear)
117{
118 struct usb_serial_port *port = tty->driver_data;
119 struct iuu_private *priv = usb_get_serial_port_data(port);
120 unsigned long flags;
121
122 /* FIXME: locking on tiomstatus */
123 dev_dbg(&port->dev, "%s msg : SET = 0x%04x, CLEAR = 0x%04x\n",
124 __func__, set, clear);
125
126 spin_lock_irqsave(&priv->lock, flags);
127
128 if ((set & TIOCM_RTS) && !(priv->tiostatus == TIOCM_RTS)) {
129 dev_dbg(&port->dev, "%s TIOCMSET RESET called !!!\n", __func__);
130 priv->reset = 1;
131 }
132 if (set & TIOCM_RTS)
133 priv->tiostatus = TIOCM_RTS;
134
135 spin_unlock_irqrestore(&priv->lock, flags);
136 return 0;
137}
138
139/* This is used to provide a carrier detect mechanism
140 * When a card is present, the response is 0x00
141 * When no card , the reader respond with TIOCM_CD
142 * This is known as CD autodetect mechanism
143 */
144static int iuu_tiocmget(struct tty_struct *tty)
145{
146 struct usb_serial_port *port = tty->driver_data;
147 struct iuu_private *priv = usb_get_serial_port_data(port);
148 unsigned long flags;
149 int rc;
150
151 spin_lock_irqsave(&priv->lock, flags);
152 rc = priv->tiostatus;
153 spin_unlock_irqrestore(&priv->lock, flags);
154
155 return rc;
156}
157
158static void iuu_rxcmd(struct urb *urb)
159{
160 struct usb_serial_port *port = urb->context;
161 int result;
162 int status = urb->status;
163
164 if (status) {
165 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
166 /* error stop all */
167 return;
168 }
169
170
171 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
172 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
173 usb_sndbulkpipe(port->serial->dev,
174 port->bulk_out_endpointAddress),
175 port->write_urb->transfer_buffer, 1,
176 read_rxcmd_callback, port);
177 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
178}
179
180static int iuu_reset(struct usb_serial_port *port, u8 wt)
181{
182 struct iuu_private *priv = usb_get_serial_port_data(port);
183 int result;
184 char *buf_ptr = port->write_urb->transfer_buffer;
185
186 /* Prepare the reset sequence */
187
188 *buf_ptr++ = IUU_RST_SET;
189 *buf_ptr++ = IUU_DELAY_MS;
190 *buf_ptr++ = wt;
191 *buf_ptr = IUU_RST_CLEAR;
192
193 /* send the sequence */
194
195 usb_fill_bulk_urb(port->write_urb,
196 port->serial->dev,
197 usb_sndbulkpipe(port->serial->dev,
198 port->bulk_out_endpointAddress),
199 port->write_urb->transfer_buffer, 4, iuu_rxcmd, port);
200 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
201 priv->reset = 0;
202 return result;
203}
204
205/* Status Function
206 * Return value is
207 * 0x00 = no card
208 * 0x01 = smartcard
209 * 0x02 = sim card
210 */
211static void iuu_update_status_callback(struct urb *urb)
212{
213 struct usb_serial_port *port = urb->context;
214 struct iuu_private *priv = usb_get_serial_port_data(port);
215 u8 *st;
216 int status = urb->status;
217
218 if (status) {
219 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
220 /* error stop all */
221 return;
222 }
223
224 st = urb->transfer_buffer;
225 dev_dbg(&port->dev, "%s - enter\n", __func__);
226 if (urb->actual_length == 1) {
227 switch (st[0]) {
228 case 0x1:
229 priv->tiostatus = iuu_cardout;
230 break;
231 case 0x0:
232 priv->tiostatus = iuu_cardin;
233 break;
234 default:
235 priv->tiostatus = iuu_cardin;
236 }
237 }
238 iuu_rxcmd(urb);
239}
240
241static void iuu_status_callback(struct urb *urb)
242{
243 struct usb_serial_port *port = urb->context;
244 int result;
245 int status = urb->status;
246
247 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
248 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
249 usb_rcvbulkpipe(port->serial->dev,
250 port->bulk_in_endpointAddress),
251 port->read_urb->transfer_buffer, 256,
252 iuu_update_status_callback, port);
253 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
254}
255
256static int iuu_status(struct usb_serial_port *port)
257{
258 int result;
259
260 memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1);
261 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
262 usb_sndbulkpipe(port->serial->dev,
263 port->bulk_out_endpointAddress),
264 port->write_urb->transfer_buffer, 1,
265 iuu_status_callback, port);
266 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
267 return result;
268
269}
270
271static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
272{
273 int status;
274 struct usb_serial *serial = port->serial;
275 int actual = 0;
276
277 /* send the data out the bulk port */
278
279 status =
280 usb_bulk_msg(serial->dev,
281 usb_sndbulkpipe(serial->dev,
282 port->bulk_out_endpointAddress), buf,
283 count, &actual, 1000);
284
285 if (status != IUU_OPERATION_OK)
286 dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status);
287 else
288 dev_dbg(&port->dev, "%s - write OK !\n", __func__);
289 return status;
290}
291
292static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
293{
294 int status;
295 struct usb_serial *serial = port->serial;
296 int actual = 0;
297
298 /* send the data out the bulk port */
299 status =
300 usb_bulk_msg(serial->dev,
301 usb_rcvbulkpipe(serial->dev,
302 port->bulk_in_endpointAddress), buf,
303 count, &actual, 1000);
304
305 if (status != IUU_OPERATION_OK)
306 dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status);
307 else
308 dev_dbg(&port->dev, "%s - read OK !\n", __func__);
309 return status;
310}
311
312static int iuu_led(struct usb_serial_port *port, unsigned int R,
313 unsigned int G, unsigned int B, u8 f)
314{
315 int status;
316 u8 *buf;
317 buf = kmalloc(8, GFP_KERNEL);
318 if (!buf)
319 return -ENOMEM;
320
321 buf[0] = IUU_SET_LED;
322 buf[1] = R & 0xFF;
323 buf[2] = (R >> 8) & 0xFF;
324 buf[3] = G & 0xFF;
325 buf[4] = (G >> 8) & 0xFF;
326 buf[5] = B & 0xFF;
327 buf[6] = (B >> 8) & 0xFF;
328 buf[7] = f;
329 status = bulk_immediate(port, buf, 8);
330 kfree(buf);
331 if (status != IUU_OPERATION_OK)
332 dev_dbg(&port->dev, "%s - led error status = %2x\n", __func__, status);
333 else
334 dev_dbg(&port->dev, "%s - led OK !\n", __func__);
335 return IUU_OPERATION_OK;
336}
337
338static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1,
339 u8 b2, u8 freq)
340{
341 *buf++ = IUU_SET_LED;
342 *buf++ = r1;
343 *buf++ = r2;
344 *buf++ = g1;
345 *buf++ = g2;
346 *buf++ = b1;
347 *buf++ = b2;
348 *buf = freq;
349}
350
351static void iuu_led_activity_on(struct urb *urb)
352{
353 struct usb_serial_port *port = urb->context;
354 int result;
355 char *buf_ptr = port->write_urb->transfer_buffer;
356 *buf_ptr++ = IUU_SET_LED;
357 if (xmas) {
358 get_random_bytes(buf_ptr, 6);
359 *(buf_ptr+7) = 1;
360 } else {
361 iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255);
362 }
363
364 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
365 usb_sndbulkpipe(port->serial->dev,
366 port->bulk_out_endpointAddress),
367 port->write_urb->transfer_buffer, 8 ,
368 iuu_rxcmd, port);
369 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
370}
371
372static void iuu_led_activity_off(struct urb *urb)
373{
374 struct usb_serial_port *port = urb->context;
375 int result;
376 char *buf_ptr = port->write_urb->transfer_buffer;
377 if (xmas) {
378 iuu_rxcmd(urb);
379 return;
380 } else {
381 *buf_ptr++ = IUU_SET_LED;
382 iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255);
383 }
384 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
385 usb_sndbulkpipe(port->serial->dev,
386 port->bulk_out_endpointAddress),
387 port->write_urb->transfer_buffer, 8 ,
388 iuu_rxcmd, port);
389 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
390}
391
392
393
394static int iuu_clk(struct usb_serial_port *port, int dwFrq)
395{
396 int status;
397 struct iuu_private *priv = usb_get_serial_port_data(port);
398 int Count = 0;
399 u8 FrqGenAdr = 0x69;
400 u8 DIV = 0; /* 8bit */
401 u8 XDRV = 0; /* 8bit */
402 u8 PUMP = 0; /* 3bit */
403 u8 PBmsb = 0; /* 2bit */
404 u8 PBlsb = 0; /* 8bit */
405 u8 PO = 0; /* 1bit */
406 u8 Q = 0; /* 7bit */
407 /* 24bit = 3bytes */
408 unsigned int P = 0;
409 unsigned int P2 = 0;
410 int frq = (int)dwFrq;
411
412 if (frq == 0) {
413 priv->buf[Count++] = IUU_UART_WRITE_I2C;
414 priv->buf[Count++] = FrqGenAdr << 1;
415 priv->buf[Count++] = 0x09;
416 priv->buf[Count++] = 0x00;
417
418 status = bulk_immediate(port, (u8 *) priv->buf, Count);
419 if (status != 0) {
420 dev_dbg(&port->dev, "%s - write error\n", __func__);
421 return status;
422 }
423 } else if (frq == 3579000) {
424 DIV = 100;
425 P = 1193;
426 Q = 40;
427 XDRV = 0;
428 } else if (frq == 3680000) {
429 DIV = 105;
430 P = 161;
431 Q = 5;
432 XDRV = 0;
433 } else if (frq == 6000000) {
434 DIV = 66;
435 P = 66;
436 Q = 2;
437 XDRV = 0x28;
438 } else {
439 unsigned int result = 0;
440 unsigned int tmp = 0;
441 unsigned int check;
442 unsigned int check2;
443 char found = 0x00;
444 unsigned int lQ = 2;
445 unsigned int lP = 2055;
446 unsigned int lDiv = 4;
447
448 for (lQ = 2; lQ <= 47 && !found; lQ++)
449 for (lP = 2055; lP >= 8 && !found; lP--)
450 for (lDiv = 4; lDiv <= 127 && !found; lDiv++) {
451 tmp = (12000000 / lDiv) * (lP / lQ);
452 if (abs((int)(tmp - frq)) <
453 abs((int)(frq - result))) {
454 check2 = (12000000 / lQ);
455 if (check2 < 250000)
456 continue;
457 check = (12000000 / lQ) * lP;
458 if (check > 400000000)
459 continue;
460 if (check < 100000000)
461 continue;
462 if (lDiv < 4 || lDiv > 127)
463 continue;
464 result = tmp;
465 P = lP;
466 DIV = lDiv;
467 Q = lQ;
468 if (result == frq)
469 found = 0x01;
470 }
471 }
472 }
473 P2 = ((P - PO) / 2) - 4;
474 PUMP = 0x04;
475 PBmsb = (P2 >> 8 & 0x03);
476 PBlsb = P2 & 0xFF;
477 PO = (P >> 10) & 0x01;
478 Q = Q - 2;
479
480 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
481 priv->buf[Count++] = FrqGenAdr << 1;
482 priv->buf[Count++] = 0x09;
483 priv->buf[Count++] = 0x20; /* Adr = 0x09 */
484 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
485 priv->buf[Count++] = FrqGenAdr << 1;
486 priv->buf[Count++] = 0x0C;
487 priv->buf[Count++] = DIV; /* Adr = 0x0C */
488 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
489 priv->buf[Count++] = FrqGenAdr << 1;
490 priv->buf[Count++] = 0x12;
491 priv->buf[Count++] = XDRV; /* Adr = 0x12 */
492 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
493 priv->buf[Count++] = FrqGenAdr << 1;
494 priv->buf[Count++] = 0x13;
495 priv->buf[Count++] = 0x6B; /* Adr = 0x13 */
496 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
497 priv->buf[Count++] = FrqGenAdr << 1;
498 priv->buf[Count++] = 0x40;
499 priv->buf[Count++] = (0xC0 | ((PUMP & 0x07) << 2)) |
500 (PBmsb & 0x03); /* Adr = 0x40 */
501 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
502 priv->buf[Count++] = FrqGenAdr << 1;
503 priv->buf[Count++] = 0x41;
504 priv->buf[Count++] = PBlsb; /* Adr = 0x41 */
505 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
506 priv->buf[Count++] = FrqGenAdr << 1;
507 priv->buf[Count++] = 0x42;
508 priv->buf[Count++] = Q | (((PO & 0x01) << 7)); /* Adr = 0x42 */
509 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
510 priv->buf[Count++] = FrqGenAdr << 1;
511 priv->buf[Count++] = 0x44;
512 priv->buf[Count++] = (char)0xFF; /* Adr = 0x44 */
513 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
514 priv->buf[Count++] = FrqGenAdr << 1;
515 priv->buf[Count++] = 0x45;
516 priv->buf[Count++] = (char)0xFE; /* Adr = 0x45 */
517 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
518 priv->buf[Count++] = FrqGenAdr << 1;
519 priv->buf[Count++] = 0x46;
520 priv->buf[Count++] = 0x7F; /* Adr = 0x46 */
521 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
522 priv->buf[Count++] = FrqGenAdr << 1;
523 priv->buf[Count++] = 0x47;
524 priv->buf[Count++] = (char)0x84; /* Adr = 0x47 */
525
526 status = bulk_immediate(port, (u8 *) priv->buf, Count);
527 if (status != IUU_OPERATION_OK)
528 dev_dbg(&port->dev, "%s - write error\n", __func__);
529 return status;
530}
531
532static int iuu_uart_flush(struct usb_serial_port *port)
533{
534 struct device *dev = &port->dev;
535 int i;
536 int status;
537 u8 rxcmd = IUU_UART_RX;
538 struct iuu_private *priv = usb_get_serial_port_data(port);
539
540 if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0)
541 return -EIO;
542
543 for (i = 0; i < 2; i++) {
544 status = bulk_immediate(port, &rxcmd, 1);
545 if (status != IUU_OPERATION_OK) {
546 dev_dbg(dev, "%s - uart_flush_write error\n", __func__);
547 return status;
548 }
549
550 status = read_immediate(port, &priv->len, 1);
551 if (status != IUU_OPERATION_OK) {
552 dev_dbg(dev, "%s - uart_flush_read error\n", __func__);
553 return status;
554 }
555
556 if (priv->len > 0) {
557 dev_dbg(dev, "%s - uart_flush datalen is : %i\n", __func__, priv->len);
558 status = read_immediate(port, priv->buf, priv->len);
559 if (status != IUU_OPERATION_OK) {
560 dev_dbg(dev, "%s - uart_flush_read error\n", __func__);
561 return status;
562 }
563 }
564 }
565 dev_dbg(dev, "%s - uart_flush_read OK!\n", __func__);
566 iuu_led(port, 0, 0xF000, 0, 0xFF);
567 return status;
568}
569
570static void read_buf_callback(struct urb *urb)
571{
572 struct usb_serial_port *port = urb->context;
573 unsigned char *data = urb->transfer_buffer;
574 int status = urb->status;
575
576 if (status) {
577 if (status == -EPROTO) {
578 /* reschedule needed */
579 }
580 return;
581 }
582
583 dev_dbg(&port->dev, "%s - %i chars to write\n", __func__, urb->actual_length);
584
585 if (urb->actual_length) {
586 tty_insert_flip_string(&port->port, data, urb->actual_length);
587 tty_flip_buffer_push(&port->port);
588 }
589 iuu_led_activity_on(urb);
590}
591
592static int iuu_bulk_write(struct usb_serial_port *port)
593{
594 struct iuu_private *priv = usb_get_serial_port_data(port);
595 unsigned long flags;
596 int result;
597 int buf_len;
598 char *buf_ptr = port->write_urb->transfer_buffer;
599
600 spin_lock_irqsave(&priv->lock, flags);
601 *buf_ptr++ = IUU_UART_ESC;
602 *buf_ptr++ = IUU_UART_TX;
603 *buf_ptr++ = priv->writelen;
604
605 memcpy(buf_ptr, priv->writebuf, priv->writelen);
606 buf_len = priv->writelen;
607 priv->writelen = 0;
608 spin_unlock_irqrestore(&priv->lock, flags);
609 dev_dbg(&port->dev, "%s - writing %i chars : %*ph\n", __func__,
610 buf_len, buf_len, buf_ptr);
611 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
612 usb_sndbulkpipe(port->serial->dev,
613 port->bulk_out_endpointAddress),
614 port->write_urb->transfer_buffer, buf_len + 3,
615 iuu_rxcmd, port);
616 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
617 usb_serial_port_softint(port);
618 return result;
619}
620
621static int iuu_read_buf(struct usb_serial_port *port, int len)
622{
623 int result;
624
625 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
626 usb_rcvbulkpipe(port->serial->dev,
627 port->bulk_in_endpointAddress),
628 port->read_urb->transfer_buffer, len,
629 read_buf_callback, port);
630 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
631 return result;
632}
633
634static void iuu_uart_read_callback(struct urb *urb)
635{
636 struct usb_serial_port *port = urb->context;
637 struct iuu_private *priv = usb_get_serial_port_data(port);
638 unsigned long flags;
639 int status = urb->status;
640 int error = 0;
641 int len = 0;
642 unsigned char *data = urb->transfer_buffer;
643 priv->poll++;
644
645 if (status) {
646 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
647 /* error stop all */
648 return;
649 }
650
651 if (urb->actual_length == 1)
652 len = (int) data[0];
653
654 if (urb->actual_length > 1) {
655 dev_dbg(&port->dev, "%s - urb->actual_length = %i\n", __func__,
656 urb->actual_length);
657 error = 1;
658 return;
659 }
660 /* if len > 0 call readbuf */
661
662 if (len > 0 && error == 0) {
663 dev_dbg(&port->dev, "%s - call read buf - len to read is %i\n",
664 __func__, len);
665 status = iuu_read_buf(port, len);
666 return;
667 }
668 /* need to update status ? */
669 if (priv->poll > 99) {
670 status = iuu_status(port);
671 priv->poll = 0;
672 return;
673 }
674
675 /* reset waiting ? */
676
677 if (priv->reset == 1) {
678 status = iuu_reset(port, 0xC);
679 return;
680 }
681 /* Writebuf is waiting */
682 spin_lock_irqsave(&priv->lock, flags);
683 if (priv->writelen > 0) {
684 spin_unlock_irqrestore(&priv->lock, flags);
685 status = iuu_bulk_write(port);
686 return;
687 }
688 spin_unlock_irqrestore(&priv->lock, flags);
689 /* if nothing to write call again rxcmd */
690 dev_dbg(&port->dev, "%s - rxcmd recall\n", __func__);
691 iuu_led_activity_off(urb);
692}
693
694static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port,
695 const u8 *buf, int count)
696{
697 struct iuu_private *priv = usb_get_serial_port_data(port);
698 unsigned long flags;
699
700 if (count > 256)
701 return -ENOMEM;
702
703 spin_lock_irqsave(&priv->lock, flags);
704
705 /* fill the buffer */
706 memcpy(priv->writebuf + priv->writelen, buf, count);
707 priv->writelen += count;
708 spin_unlock_irqrestore(&priv->lock, flags);
709
710 return count;
711}
712
713static void read_rxcmd_callback(struct urb *urb)
714{
715 struct usb_serial_port *port = urb->context;
716 int result;
717 int status = urb->status;
718
719 if (status) {
720 /* error stop all */
721 return;
722 }
723
724 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
725 usb_rcvbulkpipe(port->serial->dev,
726 port->bulk_in_endpointAddress),
727 port->read_urb->transfer_buffer, 256,
728 iuu_uart_read_callback, port);
729 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
730 dev_dbg(&port->dev, "%s - submit result = %d\n", __func__, result);
731}
732
733static int iuu_uart_on(struct usb_serial_port *port)
734{
735 int status;
736 u8 *buf;
737
738 buf = kmalloc(4, GFP_KERNEL);
739
740 if (!buf)
741 return -ENOMEM;
742
743 buf[0] = IUU_UART_ENABLE;
744 buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF);
745 buf[2] = (u8) (0x00FF & IUU_BAUD_9600);
746 buf[3] = (u8) (0x0F0 & IUU_ONE_STOP_BIT) | (0x07 & IUU_PARITY_EVEN);
747
748 status = bulk_immediate(port, buf, 4);
749 if (status != IUU_OPERATION_OK) {
750 dev_dbg(&port->dev, "%s - uart_on error\n", __func__);
751 goto uart_enable_failed;
752 }
753 /* iuu_reset() the card after iuu_uart_on() */
754 status = iuu_uart_flush(port);
755 if (status != IUU_OPERATION_OK)
756 dev_dbg(&port->dev, "%s - uart_flush error\n", __func__);
757uart_enable_failed:
758 kfree(buf);
759 return status;
760}
761
762/* Disables the IUU UART (a.k.a. the Phoenix voiderface) */
763static int iuu_uart_off(struct usb_serial_port *port)
764{
765 int status;
766 u8 *buf;
767 buf = kmalloc(1, GFP_KERNEL);
768 if (!buf)
769 return -ENOMEM;
770 buf[0] = IUU_UART_DISABLE;
771
772 status = bulk_immediate(port, buf, 1);
773 if (status != IUU_OPERATION_OK)
774 dev_dbg(&port->dev, "%s - uart_off error\n", __func__);
775
776 kfree(buf);
777 return status;
778}
779
780static int iuu_uart_baud(struct usb_serial_port *port, u32 baud_base,
781 u32 *actual, u8 parity)
782{
783 int status;
784 u32 baud;
785 u8 *dataout;
786 u8 DataCount = 0;
787 u8 T1Frekvens = 0;
788 u8 T1reload = 0;
789 unsigned int T1FrekvensHZ = 0;
790
791 dev_dbg(&port->dev, "%s - enter baud_base=%d\n", __func__, baud_base);
792 dataout = kmalloc(5, GFP_KERNEL);
793
794 if (!dataout)
795 return -ENOMEM;
796 /*baud = (((priv->clk / 35) * baud_base) / 100000); */
797 baud = baud_base;
798
799 if (baud < 1200 || baud > 230400) {
800 kfree(dataout);
801 return IUU_INVALID_PARAMETER;
802 }
803 if (baud > 977) {
804 T1Frekvens = 3;
805 T1FrekvensHZ = 500000;
806 }
807
808 if (baud > 3906) {
809 T1Frekvens = 2;
810 T1FrekvensHZ = 2000000;
811 }
812
813 if (baud > 11718) {
814 T1Frekvens = 1;
815 T1FrekvensHZ = 6000000;
816 }
817
818 if (baud > 46875) {
819 T1Frekvens = 0;
820 T1FrekvensHZ = 24000000;
821 }
822
823 T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2));
824
825 /* magic number here: ENTER_FIRMWARE_UPDATE; */
826 dataout[DataCount++] = IUU_UART_ESC;
827 /* magic number here: CHANGE_BAUD; */
828 dataout[DataCount++] = IUU_UART_CHANGE;
829 dataout[DataCount++] = T1Frekvens;
830 dataout[DataCount++] = T1reload;
831
832 *actual = (T1FrekvensHZ / (256 - T1reload)) / 2;
833
834 switch (parity & 0x0F) {
835 case IUU_PARITY_NONE:
836 dataout[DataCount++] = 0x00;
837 break;
838 case IUU_PARITY_EVEN:
839 dataout[DataCount++] = 0x01;
840 break;
841 case IUU_PARITY_ODD:
842 dataout[DataCount++] = 0x02;
843 break;
844 case IUU_PARITY_MARK:
845 dataout[DataCount++] = 0x03;
846 break;
847 case IUU_PARITY_SPACE:
848 dataout[DataCount++] = 0x04;
849 break;
850 default:
851 kfree(dataout);
852 return IUU_INVALID_PARAMETER;
853 break;
854 }
855
856 switch (parity & 0xF0) {
857 case IUU_ONE_STOP_BIT:
858 dataout[DataCount - 1] |= IUU_ONE_STOP_BIT;
859 break;
860
861 case IUU_TWO_STOP_BITS:
862 dataout[DataCount - 1] |= IUU_TWO_STOP_BITS;
863 break;
864 default:
865 kfree(dataout);
866 return IUU_INVALID_PARAMETER;
867 break;
868 }
869
870 status = bulk_immediate(port, dataout, DataCount);
871 if (status != IUU_OPERATION_OK)
872 dev_dbg(&port->dev, "%s - uart_off error\n", __func__);
873 kfree(dataout);
874 return status;
875}
876
877static void iuu_set_termios(struct tty_struct *tty,
878 struct usb_serial_port *port, struct ktermios *old_termios)
879{
880 const u32 supported_mask = CMSPAR|PARENB|PARODD;
881 struct iuu_private *priv = usb_get_serial_port_data(port);
882 unsigned int cflag = tty->termios.c_cflag;
883 int status;
884 u32 actual;
885 u32 parity;
886 int csize = CS7;
887 int baud;
888 u32 newval = cflag & supported_mask;
889
890 /* Just use the ospeed. ispeed should be the same. */
891 baud = tty->termios.c_ospeed;
892
893 dev_dbg(&port->dev, "%s - enter c_ospeed or baud=%d\n", __func__, baud);
894
895 /* compute the parity parameter */
896 parity = 0;
897 if (cflag & CMSPAR) { /* Using mark space */
898 if (cflag & PARODD)
899 parity |= IUU_PARITY_SPACE;
900 else
901 parity |= IUU_PARITY_MARK;
902 } else if (!(cflag & PARENB)) {
903 parity |= IUU_PARITY_NONE;
904 csize = CS8;
905 } else if (cflag & PARODD)
906 parity |= IUU_PARITY_ODD;
907 else
908 parity |= IUU_PARITY_EVEN;
909
910 parity |= (cflag & CSTOPB ? IUU_TWO_STOP_BITS : IUU_ONE_STOP_BIT);
911
912 /* set it */
913 status = iuu_uart_baud(port,
914 baud * priv->boost / 100,
915 &actual, parity);
916
917 /* set the termios value to the real one, so the user now what has
918 * changed. We support few fields so its easies to copy the old hw
919 * settings back over and then adjust them
920 */
921 if (old_termios)
922 tty_termios_copy_hw(&tty->termios, old_termios);
923 if (status != 0) /* Set failed - return old bits */
924 return;
925 /* Re-encode speed, parity and csize */
926 tty_encode_baud_rate(tty, baud, baud);
927 tty->termios.c_cflag &= ~(supported_mask|CSIZE);
928 tty->termios.c_cflag |= newval | csize;
929}
930
931static void iuu_close(struct usb_serial_port *port)
932{
933 /* iuu_led (port,255,0,0,0); */
934
935 iuu_uart_off(port);
936
937 usb_kill_urb(port->write_urb);
938 usb_kill_urb(port->read_urb);
939
940 iuu_led(port, 0, 0, 0xF000, 0xFF);
941}
942
943static void iuu_init_termios(struct tty_struct *tty)
944{
945 tty->termios.c_cflag = B9600 | CS8 | CSTOPB | CREAD | PARENB | CLOCAL;
946 tty->termios.c_ispeed = 9600;
947 tty->termios.c_ospeed = 9600;
948 tty->termios.c_lflag = 0;
949 tty->termios.c_oflag = 0;
950 tty->termios.c_iflag = 0;
951}
952
953static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port)
954{
955 struct usb_serial *serial = port->serial;
956 struct device *dev = &port->dev;
957 int result;
958 int baud;
959 u32 actual;
960 struct iuu_private *priv = usb_get_serial_port_data(port);
961
962 baud = tty->termios.c_ospeed;
963
964 dev_dbg(dev, "%s - baud %d\n", __func__, baud);
965 usb_clear_halt(serial->dev, port->write_urb->pipe);
966 usb_clear_halt(serial->dev, port->read_urb->pipe);
967
968 priv->poll = 0;
969
970#define SOUP(a, b, c, d) do { \
971 result = usb_control_msg(port->serial->dev, \
972 usb_sndctrlpipe(port->serial->dev, 0), \
973 b, a, c, d, NULL, 0, 1000); \
974 dev_dbg(dev, "0x%x:0x%x:0x%x:0x%x %d\n", a, b, c, d, result); } while (0)
975
976 /* This is not UART related but IUU USB driver related or something */
977 /* like that. Basically no IUU will accept any commands from the USB */
978 /* host unless it has received the following message */
979 /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */
980
981 SOUP(0x03, 0x02, 0x02, 0x0);
982
983 iuu_led(port, 0xF000, 0xF000, 0, 0xFF);
984 iuu_uart_on(port);
985 if (boost < 100)
986 boost = 100;
987 priv->boost = boost;
988 switch (clockmode) {
989 case 2: /* 3.680 Mhz */
990 priv->clk = IUU_CLK_3680000;
991 iuu_clk(port, IUU_CLK_3680000 * boost / 100);
992 result =
993 iuu_uart_baud(port, baud * boost / 100, &actual,
994 IUU_PARITY_EVEN);
995 break;
996 case 3: /* 6.00 Mhz */
997 iuu_clk(port, IUU_CLK_6000000 * boost / 100);
998 priv->clk = IUU_CLK_6000000;
999 /* Ratio of 6000000 to 3500000 for baud 9600 */
1000 result =
1001 iuu_uart_baud(port, 16457 * boost / 100, &actual,
1002 IUU_PARITY_EVEN);
1003 break;
1004 default: /* 3.579 Mhz */
1005 iuu_clk(port, IUU_CLK_3579000 * boost / 100);
1006 priv->clk = IUU_CLK_3579000;
1007 result =
1008 iuu_uart_baud(port, baud * boost / 100, &actual,
1009 IUU_PARITY_EVEN);
1010 }
1011
1012 /* set the cardin cardout signals */
1013 switch (cdmode) {
1014 case 0:
1015 iuu_cardin = 0;
1016 iuu_cardout = 0;
1017 break;
1018 case 1:
1019 iuu_cardin = TIOCM_CD;
1020 iuu_cardout = 0;
1021 break;
1022 case 2:
1023 iuu_cardin = 0;
1024 iuu_cardout = TIOCM_CD;
1025 break;
1026 case 3:
1027 iuu_cardin = TIOCM_DSR;
1028 iuu_cardout = 0;
1029 break;
1030 case 4:
1031 iuu_cardin = 0;
1032 iuu_cardout = TIOCM_DSR;
1033 break;
1034 case 5:
1035 iuu_cardin = TIOCM_CTS;
1036 iuu_cardout = 0;
1037 break;
1038 case 6:
1039 iuu_cardin = 0;
1040 iuu_cardout = TIOCM_CTS;
1041 break;
1042 case 7:
1043 iuu_cardin = TIOCM_RNG;
1044 iuu_cardout = 0;
1045 break;
1046 case 8:
1047 iuu_cardin = 0;
1048 iuu_cardout = TIOCM_RNG;
1049 }
1050
1051 iuu_uart_flush(port);
1052
1053 dev_dbg(dev, "%s - initialization done\n", __func__);
1054
1055 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
1056 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1057 usb_sndbulkpipe(port->serial->dev,
1058 port->bulk_out_endpointAddress),
1059 port->write_urb->transfer_buffer, 1,
1060 read_rxcmd_callback, port);
1061 result = usb_submit_urb(port->write_urb, GFP_KERNEL);
1062 if (result) {
1063 dev_err(dev, "%s - failed submitting read urb, error %d\n", __func__, result);
1064 iuu_close(port);
1065 } else {
1066 dev_dbg(dev, "%s - rxcmd OK\n", __func__);
1067 }
1068
1069 return result;
1070}
1071
1072/* how to change VCC */
1073static int iuu_vcc_set(struct usb_serial_port *port, unsigned int vcc)
1074{
1075 int status;
1076 u8 *buf;
1077
1078 buf = kmalloc(5, GFP_KERNEL);
1079 if (!buf)
1080 return -ENOMEM;
1081
1082 buf[0] = IUU_SET_VCC;
1083 buf[1] = vcc & 0xFF;
1084 buf[2] = (vcc >> 8) & 0xFF;
1085 buf[3] = (vcc >> 16) & 0xFF;
1086 buf[4] = (vcc >> 24) & 0xFF;
1087
1088 status = bulk_immediate(port, buf, 5);
1089 kfree(buf);
1090
1091 if (status != IUU_OPERATION_OK)
1092 dev_dbg(&port->dev, "%s - vcc error status = %2x\n", __func__, status);
1093 else
1094 dev_dbg(&port->dev, "%s - vcc OK !\n", __func__);
1095
1096 return status;
1097}
1098
1099/*
1100 * Sysfs Attributes
1101 */
1102
1103static ssize_t vcc_mode_show(struct device *dev,
1104 struct device_attribute *attr, char *buf)
1105{
1106 struct usb_serial_port *port = to_usb_serial_port(dev);
1107 struct iuu_private *priv = usb_get_serial_port_data(port);
1108
1109 return sprintf(buf, "%d\n", priv->vcc);
1110}
1111
1112static ssize_t vcc_mode_store(struct device *dev,
1113 struct device_attribute *attr, const char *buf, size_t count)
1114{
1115 struct usb_serial_port *port = to_usb_serial_port(dev);
1116 struct iuu_private *priv = usb_get_serial_port_data(port);
1117 unsigned long v;
1118
1119 if (kstrtoul(buf, 10, &v)) {
1120 dev_err(dev, "%s - vcc_mode: %s is not a unsigned long\n",
1121 __func__, buf);
1122 goto fail_store_vcc_mode;
1123 }
1124
1125 dev_dbg(dev, "%s: setting vcc_mode = %ld\n", __func__, v);
1126
1127 if ((v != 3) && (v != 5)) {
1128 dev_err(dev, "%s - vcc_mode %ld is invalid\n", __func__, v);
1129 } else {
1130 iuu_vcc_set(port, v);
1131 priv->vcc = v;
1132 }
1133fail_store_vcc_mode:
1134 return count;
1135}
1136static DEVICE_ATTR_RW(vcc_mode);
1137
1138static int iuu_create_sysfs_attrs(struct usb_serial_port *port)
1139{
1140 return device_create_file(&port->dev, &dev_attr_vcc_mode);
1141}
1142
1143static int iuu_remove_sysfs_attrs(struct usb_serial_port *port)
1144{
1145 device_remove_file(&port->dev, &dev_attr_vcc_mode);
1146 return 0;
1147}
1148
1149/*
1150 * End Sysfs Attributes
1151 */
1152
1153static struct usb_serial_driver iuu_device = {
1154 .driver = {
1155 .owner = THIS_MODULE,
1156 .name = "iuu_phoenix",
1157 },
1158 .id_table = id_table,
1159 .num_ports = 1,
1160 .num_bulk_in = 1,
1161 .num_bulk_out = 1,
1162 .bulk_in_size = 512,
1163 .bulk_out_size = 512,
1164 .open = iuu_open,
1165 .close = iuu_close,
1166 .write = iuu_uart_write,
1167 .read_bulk_callback = iuu_uart_read_callback,
1168 .tiocmget = iuu_tiocmget,
1169 .tiocmset = iuu_tiocmset,
1170 .set_termios = iuu_set_termios,
1171 .init_termios = iuu_init_termios,
1172 .port_probe = iuu_port_probe,
1173 .port_remove = iuu_port_remove,
1174};
1175
1176static struct usb_serial_driver * const serial_drivers[] = {
1177 &iuu_device, NULL
1178};
1179
1180module_usb_serial_driver(serial_drivers, id_table);
1181
1182MODULE_AUTHOR("Alain Degreffe eczema@ecze.com");
1183
1184MODULE_DESCRIPTION(DRIVER_DESC);
1185MODULE_LICENSE("GPL");
1186
1187module_param(xmas, bool, S_IRUGO | S_IWUSR);
1188MODULE_PARM_DESC(xmas, "Xmas colors enabled or not");
1189
1190module_param(boost, int, S_IRUGO | S_IWUSR);
1191MODULE_PARM_DESC(boost, "Card overclock boost (in percent 100-500)");
1192
1193module_param(clockmode, int, S_IRUGO | S_IWUSR);
1194MODULE_PARM_DESC(clockmode, "Card clock mode (1=3.579 MHz, 2=3.680 MHz, "
1195 "3=6 Mhz)");
1196
1197module_param(cdmode, int, S_IRUGO | S_IWUSR);
1198MODULE_PARM_DESC(cdmode, "Card detect mode (0=none, 1=CD, 2=!CD, 3=DSR, "
1199 "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING)");
1200
1201module_param(vcc_default, int, S_IRUGO | S_IWUSR);
1202MODULE_PARM_DESC(vcc_default, "Set default VCC (either 3 for 3.3V or 5 "
1203 "for 5V). Default to 5.");