1 /*
2 * Infinity Unlimited USB Phoenix driver
3 *
4 * Copyright (C) 2007 Alain Degreffe (eczema@ecze.com)
5 *
6 * Original code taken from iuutool (Copyright (C) 2006 Juan Carlos Borrás)
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * And tested with help of WB Electronics
14 *
15 */
16 #include <linux/kernel.h>
17 #include <linux/errno.h>
18 #include <linux/init.h>
19 #include <linux/slab.h>
20 #include <linux/tty.h>
21 #include <linux/tty_driver.h>
22 #include <linux/tty_flip.h>
23 #include <linux/serial.h>
24 #include <linux/module.h>
25 #include <linux/moduleparam.h>
26 #include <linux/spinlock.h>
27 #include <linux/uaccess.h>
28 #include <linux/usb.h>
29 #include <linux/usb/serial.h>
30 #include "iuu_phoenix.h"
31 #include <linux/random.h>
32
33
34 #ifdef CONFIG_USB_SERIAL_DEBUG
35 static int debug = 1;
36 #else
37 static int debug;
38 #endif
39
40 /*
41 * Version Information
42 */
43 #define DRIVER_VERSION "v0.10"
44 #define DRIVER_DESC "Infinity USB Unlimited Phoenix driver"
45
46 static struct usb_device_id id_table[] = {
47 {USB_DEVICE(IUU_USB_VENDOR_ID, IUU_USB_PRODUCT_ID)},
48 {} /* Terminating entry */
49 };
50 MODULE_DEVICE_TABLE(usb, id_table);
51
52 static struct usb_driver iuu_driver = {
53 .name = "iuu_phoenix",
54 .probe = usb_serial_probe,
55 .disconnect = usb_serial_disconnect,
56 .id_table = id_table,
57 .no_dynamic_id = 1,
58 };
59
60 /* turbo parameter */
61 static int boost = 100;
62 static int clockmode = 1;
63 static int cdmode = 1;
64 static int iuu_cardin;
65 static int iuu_cardout;
66 static int xmas;
67
68 static void read_rxcmd_callback(struct urb *urb);
69
70 struct iuu_private {
71 spinlock_t lock; /* store irq state */
72 wait_queue_head_t delta_msr_wait;
73 u8 line_status;
74 int tiostatus; /* store IUART SIGNAL for tiocmget call */
75 u8 reset; /* if 1 reset is needed */
76 int poll; /* number of poll */
77 u8 *writebuf; /* buffer for writing to device */
78 int writelen; /* num of byte to write to device */
79 u8 *buf; /* used for initialize speed */
80 u8 *dbgbuf; /* debug buffer */
81 u8 len;
82 };
83
84
85 static void iuu_free_buf(struct iuu_private *priv)
86 {
87 kfree(priv->buf);
88 kfree(priv->dbgbuf);
89 kfree(priv->writebuf);
90 }
91
92 static int iuu_alloc_buf(struct iuu_private *priv)
93 {
94 priv->buf = kzalloc(256, GFP_KERNEL);
95 priv->dbgbuf = kzalloc(256, GFP_KERNEL);
96 priv->writebuf = kzalloc(256, GFP_KERNEL);
97 if (!priv->buf || !priv->dbgbuf || !priv->writebuf) {
98 iuu_free_buf(priv);
99 dbg("%s problem allocation buffer", __func__);
100 return -ENOMEM;
101 }
102 dbg("%s - Privates buffers allocation success", __func__);
103 return 0;
104 }
105
106 static int iuu_startup(struct usb_serial *serial)
107 {
108 struct iuu_private *priv;
109 priv = kzalloc(sizeof(struct iuu_private), GFP_KERNEL);
110 dbg("%s- priv allocation success", __func__);
111 if (!priv)
112 return -ENOMEM;
113 if (iuu_alloc_buf(priv)) {
114 kfree(priv);
115 return -ENOMEM;
116 }
117 spin_lock_init(&priv->lock);
118 init_waitqueue_head(&priv->delta_msr_wait);
119 usb_set_serial_port_data(serial->port[0], priv);
120 return 0;
121 }
122
123 /* Release function */
124 static void iuu_release(struct usb_serial *serial)
125 {
126 struct usb_serial_port *port = serial->port[0];
127 struct iuu_private *priv = usb_get_serial_port_data(port);
128 if (!port)
129 return;
130
131 dbg("%s", __func__);
132
133 if (priv) {
134 iuu_free_buf(priv);
135 dbg("%s - I will free all", __func__);
136 usb_set_serial_port_data(port, NULL);
137
138 dbg("%s - priv is not anymore in port structure", __func__);
139 kfree(priv);
140
141 dbg("%s priv is now kfree", __func__);
142 }
143 }
144
145 static int iuu_tiocmset(struct tty_struct *tty, struct file *file,
146 unsigned int set, unsigned int clear)
147 {
148 struct usb_serial_port *port = tty->driver_data;
149 struct iuu_private *priv = usb_get_serial_port_data(port);
150 unsigned long flags;
151
152 /* FIXME: locking on tiomstatus */
153 dbg("%s (%d) msg : SET = 0x%04x, CLEAR = 0x%04x ", __func__,
154 port->number, set, clear);
155
156 spin_lock_irqsave(&priv->lock, flags);
157 if (set & TIOCM_RTS)
158 priv->tiostatus = TIOCM_RTS;
159
160 if (!(set & TIOCM_RTS) && priv->tiostatus == TIOCM_RTS) {
161 dbg("%s TIOCMSET RESET called !!!", __func__);
162 priv->reset = 1;
163 }
164 spin_unlock_irqrestore(&priv->lock, flags);
165 return 0;
166 }
167
168 /* This is used to provide a carrier detect mechanism
169 * When a card is present, the response is 0x00
170 * When no card , the reader respond with TIOCM_CD
171 * This is known as CD autodetect mechanism
172 */
173 static int iuu_tiocmget(struct tty_struct *tty, struct file *file)
174 {
175 struct usb_serial_port *port = tty->driver_data;
176 struct iuu_private *priv = usb_get_serial_port_data(port);
177 unsigned long flags;
178 int rc;
179
180 spin_lock_irqsave(&priv->lock, flags);
181 rc = priv->tiostatus;
182 spin_unlock_irqrestore(&priv->lock, flags);
183
184 return rc;
185 }
186
187 static void iuu_rxcmd(struct urb *urb)
188 {
189 struct usb_serial_port *port = urb->context;
190 int result;
191 int status = urb->status;
192
193 dbg("%s - enter", __func__);
194
195 if (status) {
196 dbg("%s - status = %d", __func__, status);
197 /* error stop all */
198 return;
199 }
200
201
202 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
203 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
204 usb_sndbulkpipe(port->serial->dev,
205 port->bulk_out_endpointAddress),
206 port->write_urb->transfer_buffer, 1,
207 read_rxcmd_callback, port);
208 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
209 }
210
211 static int iuu_reset(struct usb_serial_port *port, u8 wt)
212 {
213 struct iuu_private *priv = usb_get_serial_port_data(port);
214 int result;
215 char *buf_ptr = port->write_urb->transfer_buffer;
216 dbg("%s - enter", __func__);
217
218 /* Prepare the reset sequence */
219
220 *buf_ptr++ = IUU_RST_SET;
221 *buf_ptr++ = IUU_DELAY_MS;
222 *buf_ptr++ = wt;
223 *buf_ptr = IUU_RST_CLEAR;
224
225 /* send the sequence */
226
227 usb_fill_bulk_urb(port->write_urb,
228 port->serial->dev,
229 usb_sndbulkpipe(port->serial->dev,
230 port->bulk_out_endpointAddress),
231 port->write_urb->transfer_buffer, 4, iuu_rxcmd, port);
232 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
233 priv->reset = 0;
234 return result;
235 }
236
237 /* Status Function
238 * Return value is
239 * 0x00 = no card
240 * 0x01 = smartcard
241 * 0x02 = sim card
242 */
243 static void iuu_update_status_callback(struct urb *urb)
244 {
245 struct usb_serial_port *port = urb->context;
246 struct iuu_private *priv = usb_get_serial_port_data(port);
247 u8 *st;
248 int status = urb->status;
249
250 dbg("%s - enter", __func__);
251
252 if (status) {
253 dbg("%s - status = %d", __func__, status);
254 /* error stop all */
255 return;
256 }
257
258 st = urb->transfer_buffer;
259 dbg("%s - enter", __func__);
260 if (urb->actual_length == 1) {
261 switch (st[0]) {
262 case 0x1:
263 priv->tiostatus = iuu_cardout;
264 break;
265 case 0x0:
266 priv->tiostatus = iuu_cardin;
267 break;
268 default:
269 priv->tiostatus = iuu_cardin;
270 }
271 }
272 iuu_rxcmd(urb);
273 }
274
275 static void iuu_status_callback(struct urb *urb)
276 {
277 struct usb_serial_port *port = urb->context;
278 int result;
279 int status = urb->status;
280
281 dbg("%s - status = %d", __func__, status);
282 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
283 usb_rcvbulkpipe(port->serial->dev,
284 port->bulk_in_endpointAddress),
285 port->read_urb->transfer_buffer, 256,
286 iuu_update_status_callback, port);
287 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
288 }
289
290 static int iuu_status(struct usb_serial_port *port)
291 {
292 int result;
293
294 dbg("%s - enter", __func__);
295
296 memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1);
297 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
298 usb_sndbulkpipe(port->serial->dev,
299 port->bulk_out_endpointAddress),
300 port->write_urb->transfer_buffer, 1,
301 iuu_status_callback, port);
302 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
303 return result;
304
305 }
306
307 static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
308 {
309 int status;
310 struct usb_serial *serial = port->serial;
311 int actual = 0;
312
313 dbg("%s - enter", __func__);
314
315 /* send the data out the bulk port */
316
317 status =
318 usb_bulk_msg(serial->dev,
319 usb_sndbulkpipe(serial->dev,
320 port->bulk_out_endpointAddress), buf,
321 count, &actual, HZ * 1);
322
323 if (status != IUU_OPERATION_OK)
324 dbg("%s - error = %2x", __func__, status);
325 else
326 dbg("%s - write OK !", __func__);
327 return status;
328 }
329
330 static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
331 {
332 int status;
333 struct usb_serial *serial = port->serial;
334 int actual = 0;
335
336 dbg("%s - enter", __func__);
337
338 /* send the data out the bulk port */
339
340 status =
341 usb_bulk_msg(serial->dev,
342 usb_rcvbulkpipe(serial->dev,
343 port->bulk_in_endpointAddress), buf,
344 count, &actual, HZ * 1);
345
346 if (status != IUU_OPERATION_OK)
347 dbg("%s - error = %2x", __func__, status);
348 else
349 dbg("%s - read OK !", __func__);
350 return status;
351 }
352
353 static int iuu_led(struct usb_serial_port *port, unsigned int R,
354 unsigned int G, unsigned int B, u8 f)
355 {
356 int status;
357 u8 *buf;
358 buf = kmalloc(8, GFP_KERNEL);
359 if (!buf)
360 return -ENOMEM;
361
362 dbg("%s - enter", __func__);
363
364 buf[0] = IUU_SET_LED;
365 buf[1] = R & 0xFF;
366 buf[2] = (R >> 8) & 0xFF;
367 buf[3] = G & 0xFF;
368 buf[4] = (G >> 8) & 0xFF;
369 buf[5] = B & 0xFF;
370 buf[6] = (B >> 8) & 0xFF;
371 buf[7] = f;
372 status = bulk_immediate(port, buf, 8);
373 kfree(buf);
374 if (status != IUU_OPERATION_OK)
375 dbg("%s - led error status = %2x", __func__, status);
376 else
377 dbg("%s - led OK !", __func__);
378 return IUU_OPERATION_OK;
379 }
380
381 static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1,
382 u8 b2, u8 freq)
383 {
384 *buf++ = IUU_SET_LED;
385 *buf++ = r1;
386 *buf++ = r2;
387 *buf++ = g1;
388 *buf++ = g2;
389 *buf++ = b1;
390 *buf++ = b2;
391 *buf = freq;
392 }
393
394 static void iuu_led_activity_on(struct urb *urb)
395 {
396 struct usb_serial_port *port = urb->context;
397 int result;
398 char *buf_ptr = port->write_urb->transfer_buffer;
399 *buf_ptr++ = IUU_SET_LED;
400 if (xmas == 1) {
401 get_random_bytes(buf_ptr, 6);
402 *(buf_ptr+7) = 1;
403 } else {
404 iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255);
405 }
406
407 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
408 usb_sndbulkpipe(port->serial->dev,
409 port->bulk_out_endpointAddress),
410 port->write_urb->transfer_buffer, 8 ,
411 iuu_rxcmd, port);
412 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
413 }
414
415 static void iuu_led_activity_off(struct urb *urb)
416 {
417 struct usb_serial_port *port = urb->context;
418 int result;
419 char *buf_ptr = port->write_urb->transfer_buffer;
420 if (xmas == 1) {
421 iuu_rxcmd(urb);
422 return;
423 } else {
424 *buf_ptr++ = IUU_SET_LED;
425 iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255);
426 }
427 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
428 usb_sndbulkpipe(port->serial->dev,
429 port->bulk_out_endpointAddress),
430 port->write_urb->transfer_buffer, 8 ,
431 iuu_rxcmd, port);
432 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
433 }
434
435
436
437 static int iuu_clk(struct usb_serial_port *port, int dwFrq)
438 {
439 int status;
440 struct iuu_private *priv = usb_get_serial_port_data(port);
441 int Count = 0;
442 u8 FrqGenAdr = 0x69;
443 u8 DIV = 0; /* 8bit */
444 u8 XDRV = 0; /* 8bit */
445 u8 PUMP = 0; /* 3bit */
446 u8 PBmsb = 0; /* 2bit */
447 u8 PBlsb = 0; /* 8bit */
448 u8 PO = 0; /* 1bit */
449 u8 Q = 0; /* 7bit */
450 /* 24bit = 3bytes */
451 unsigned int P = 0;
452 unsigned int P2 = 0;
453 int frq = (int)dwFrq;
454
455 dbg("%s - enter", __func__);
456
457 if (frq == 0) {
458 priv->buf[Count++] = IUU_UART_WRITE_I2C;
459 priv->buf[Count++] = FrqGenAdr << 1;
460 priv->buf[Count++] = 0x09;
461 priv->buf[Count++] = 0x00;
462
463 status = bulk_immediate(port, (u8 *) priv->buf, Count);
464 if (status != 0) {
465 dbg("%s - write error ", __func__);
466 return status;
467 }
468 } else if (frq == 3579000) {
469 DIV = 100;
470 P = 1193;
471 Q = 40;
472 XDRV = 0;
473 } else if (frq == 3680000) {
474 DIV = 105;
475 P = 161;
476 Q = 5;
477 XDRV = 0;
478 } else if (frq == 6000000) {
479 DIV = 66;
480 P = 66;
481 Q = 2;
482 XDRV = 0x28;
483 } else {
484 unsigned int result = 0;
485 unsigned int tmp = 0;
486 unsigned int check;
487 unsigned int check2;
488 char found = 0x00;
489 unsigned int lQ = 2;
490 unsigned int lP = 2055;
491 unsigned int lDiv = 4;
492
493 for (lQ = 2; lQ <= 47 && !found; lQ++)
494 for (lP = 2055; lP >= 8 && !found; lP--)
495 for (lDiv = 4; lDiv <= 127 && !found; lDiv++) {
496 tmp = (12000000 / lDiv) * (lP / lQ);
497 if (abs((int)(tmp - frq)) <
498 abs((int)(frq - result))) {
499 check2 = (12000000 / lQ);
500 if (check2 < 250000)
501 continue;
502 check = (12000000 / lQ) * lP;
503 if (check > 400000000)
504 continue;
505 if (check < 100000000)
506 continue;
507 if (lDiv < 4 || lDiv > 127)
508 continue;
509 result = tmp;
510 P = lP;
511 DIV = lDiv;
512 Q = lQ;
513 if (result == frq)
514 found = 0x01;
515 }
516 }
517 }
518 P2 = ((P - PO) / 2) - 4;
519 DIV = DIV;
520 PUMP = 0x04;
521 PBmsb = (P2 >> 8 & 0x03);
522 PBlsb = P2 & 0xFF;
523 PO = (P >> 10) & 0x01;
524 Q = Q - 2;
525
526 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
527 priv->buf[Count++] = FrqGenAdr << 1;
528 priv->buf[Count++] = 0x09;
529 priv->buf[Count++] = 0x20; /* Adr = 0x09 */
530 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
531 priv->buf[Count++] = FrqGenAdr << 1;
532 priv->buf[Count++] = 0x0C;
533 priv->buf[Count++] = DIV; /* Adr = 0x0C */
534 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
535 priv->buf[Count++] = FrqGenAdr << 1;
536 priv->buf[Count++] = 0x12;
537 priv->buf[Count++] = XDRV; /* Adr = 0x12 */
538 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
539 priv->buf[Count++] = FrqGenAdr << 1;
540 priv->buf[Count++] = 0x13;
541 priv->buf[Count++] = 0x6B; /* Adr = 0x13 */
542 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
543 priv->buf[Count++] = FrqGenAdr << 1;
544 priv->buf[Count++] = 0x40;
545 priv->buf[Count++] = (0xC0 | ((PUMP & 0x07) << 2)) |
546 (PBmsb & 0x03); /* Adr = 0x40 */
547 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
548 priv->buf[Count++] = FrqGenAdr << 1;
549 priv->buf[Count++] = 0x41;
550 priv->buf[Count++] = PBlsb; /* Adr = 0x41 */
551 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
552 priv->buf[Count++] = FrqGenAdr << 1;
553 priv->buf[Count++] = 0x42;
554 priv->buf[Count++] = Q | (((PO & 0x01) << 7)); /* Adr = 0x42 */
555 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
556 priv->buf[Count++] = FrqGenAdr << 1;
557 priv->buf[Count++] = 0x44;
558 priv->buf[Count++] = (char)0xFF; /* Adr = 0x44 */
559 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
560 priv->buf[Count++] = FrqGenAdr << 1;
561 priv->buf[Count++] = 0x45;
562 priv->buf[Count++] = (char)0xFE; /* Adr = 0x45 */
563 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
564 priv->buf[Count++] = FrqGenAdr << 1;
565 priv->buf[Count++] = 0x46;
566 priv->buf[Count++] = 0x7F; /* Adr = 0x46 */
567 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
568 priv->buf[Count++] = FrqGenAdr << 1;
569 priv->buf[Count++] = 0x47;
570 priv->buf[Count++] = (char)0x84; /* Adr = 0x47 */
571
572 status = bulk_immediate(port, (u8 *) priv->buf, Count);
573 if (status != IUU_OPERATION_OK)
574 dbg("%s - write error ", __func__);
575 return status;
576 }
577
578 static int iuu_uart_flush(struct usb_serial_port *port)
579 {
580 int i;
581 int status;
582 u8 rxcmd = IUU_UART_RX;
583 struct iuu_private *priv = usb_get_serial_port_data(port);
584
585 dbg("%s - enter", __func__);
586
587 if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0)
588 return -EIO;
589
590 for (i = 0; i < 2; i++) {
591 status = bulk_immediate(port, &rxcmd, 1);
592 if (status != IUU_OPERATION_OK) {
593 dbg("%s - uart_flush_write error", __func__);
594 return status;
595 }
596
597 status = read_immediate(port, &priv->len, 1);
598 if (status != IUU_OPERATION_OK) {
599 dbg("%s - uart_flush_read error", __func__);
600 return status;
601 }
602
603 if (priv->len > 0) {
604 dbg("%s - uart_flush datalen is : %i ", __func__,
605 priv->len);
606 status = read_immediate(port, priv->buf, priv->len);
607 if (status != IUU_OPERATION_OK) {
608 dbg("%s - uart_flush_read error", __func__);
609 return status;
610 }
611 }
612 }
613 dbg("%s - uart_flush_read OK!", __func__);
614 iuu_led(port, 0, 0xF000, 0, 0xFF);
615 return status;
616 }
617
618 static void read_buf_callback(struct urb *urb)
619 {
620 struct usb_serial_port *port = urb->context;
621 unsigned char *data = urb->transfer_buffer;
622 struct tty_struct *tty;
623 int status = urb->status;
624
625 dbg("%s - status = %d", __func__, status);
626
627 if (status) {
628 if (status == -EPROTO) {
629 /* reschedule needed */
630 }
631 return;
632 }
633
634 dbg("%s - %i chars to write", __func__, urb->actual_length);
635 tty = tty_port_tty_get(&port->port);
636 if (data == NULL)
637 dbg("%s - data is NULL !!!", __func__);
638 if (tty && urb->actual_length && data) {
639 tty_insert_flip_string(tty, data, urb->actual_length);
640 tty_flip_buffer_push(tty);
641 }
642 tty_kref_put(tty);
643 iuu_led_activity_on(urb);
644 }
645
646 static int iuu_bulk_write(struct usb_serial_port *port)
647 {
648 struct iuu_private *priv = usb_get_serial_port_data(port);
649 unsigned long flags;
650 int result;
651 int i;
652 int buf_len;
653 char *buf_ptr = port->write_urb->transfer_buffer;
654 dbg("%s - enter", __func__);
655
656 spin_lock_irqsave(&priv->lock, flags);
657 *buf_ptr++ = IUU_UART_ESC;
658 *buf_ptr++ = IUU_UART_TX;
659 *buf_ptr++ = priv->writelen;
660
661 memcpy(buf_ptr, priv->writebuf, priv->writelen);
662 buf_len = priv->writelen;
663 priv->writelen = 0;
664 spin_unlock_irqrestore(&priv->lock, flags);
665 if (debug == 1) {
666 for (i = 0; i < buf_len; i++)
667 sprintf(priv->dbgbuf + i*2 ,
668 "%02X", priv->writebuf[i]);
669 priv->dbgbuf[buf_len+i*2] = 0;
670 dbg("%s - writing %i chars : %s", __func__,
671 buf_len, priv->dbgbuf);
672 }
673 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
674 usb_sndbulkpipe(port->serial->dev,
675 port->bulk_out_endpointAddress),
676 port->write_urb->transfer_buffer, buf_len + 3,
677 iuu_rxcmd, port);
678 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
679 usb_serial_port_softint(port);
680 return result;
681 }
682
683 static int iuu_read_buf(struct usb_serial_port *port, int len)
684 {
685 int result;
686 dbg("%s - enter", __func__);
687
688 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
689 usb_rcvbulkpipe(port->serial->dev,
690 port->bulk_in_endpointAddress),
691 port->read_urb->transfer_buffer, len,
692 read_buf_callback, port);
693 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
694 return result;
695 }
696
697 static void iuu_uart_read_callback(struct urb *urb)
698 {
699 struct usb_serial_port *port = urb->context;
700 struct iuu_private *priv = usb_get_serial_port_data(port);
701 unsigned long flags;
702 int status = urb->status;
703 int error = 0;
704 int len = 0;
705 unsigned char *data = urb->transfer_buffer;
706 priv->poll++;
707
708 dbg("%s - enter", __func__);
709
710 if (status) {
711 dbg("%s - status = %d", __func__, status);
712 /* error stop all */
713 return;
714 }
715 if (data == NULL)
716 dbg("%s - data is NULL !!!", __func__);
717
718 if (urb->actual_length == 1 && data != NULL)
719 len = (int) data[0];
720
721 if (urb->actual_length > 1) {
722 dbg("%s - urb->actual_length = %i", __func__,
723 urb->actual_length);
724 error = 1;
725 return;
726 }
727 /* if len > 0 call readbuf */
728
729 if (len > 0 && error == 0) {
730 dbg("%s - call read buf - len to read is %i ",
731 __func__, len);
732 status = iuu_read_buf(port, len);
733 return;
734 }
735 /* need to update status ? */
736 if (priv->poll > 99) {
737 status = iuu_status(port);
738 priv->poll = 0;
739 return;
740 }
741
742 /* reset waiting ? */
743
744 if (priv->reset == 1) {
745 status = iuu_reset(port, 0xC);
746 return;
747 }
748 /* Writebuf is waiting */
749 spin_lock_irqsave(&priv->lock, flags);
750 if (priv->writelen > 0) {
751 spin_unlock_irqrestore(&priv->lock, flags);
752 status = iuu_bulk_write(port);
753 return;
754 }
755 spin_unlock_irqrestore(&priv->lock, flags);
756 /* if nothing to write call again rxcmd */
757 dbg("%s - rxcmd recall", __func__);
758 iuu_led_activity_off(urb);
759 }
760
761 static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port,
762 const u8 *buf, int count)
763 {
764 struct iuu_private *priv = usb_get_serial_port_data(port);
765 unsigned long flags;
766 dbg("%s - enter", __func__);
767
768 if (count > 256)
769 return -ENOMEM;
770
771 spin_lock_irqsave(&priv->lock, flags);
772
773 /* fill the buffer */
774 memcpy(priv->writebuf + priv->writelen, buf, count);
775 priv->writelen += count;
776 spin_unlock_irqrestore(&priv->lock, flags);
777
778 return count;
779 }
780
781 static void read_rxcmd_callback(struct urb *urb)
782 {
783 struct usb_serial_port *port = urb->context;
784 int result;
785 int status = urb->status;
786
787 dbg("%s - status = %d", __func__, status);
788
789 if (status) {
790 /* error stop all */
791 return;
792 }
793
794 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
795 usb_rcvbulkpipe(port->serial->dev,
796 port->bulk_in_endpointAddress),
797 port->read_urb->transfer_buffer, 256,
798 iuu_uart_read_callback, port);
799 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
800 dbg("%s - submit result = %d", __func__, result);
801 return;
802 }
803
804 static int iuu_uart_on(struct usb_serial_port *port)
805 {
806 int status;
807 u8 *buf;
808
809 buf = kmalloc(sizeof(u8) * 4, GFP_KERNEL);
810
811 if (!buf)
812 return -ENOMEM;
813
814 buf[0] = IUU_UART_ENABLE;
815 buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF);
816 buf[2] = (u8) (0x00FF & IUU_BAUD_9600);
817 buf[3] = (u8) (0x0F0 & IUU_ONE_STOP_BIT) | (0x07 & IUU_PARITY_EVEN);
818
819 status = bulk_immediate(port, buf, 4);
820 if (status != IUU_OPERATION_OK) {
821 dbg("%s - uart_on error", __func__);
822 goto uart_enable_failed;
823 }
824 /* iuu_reset() the card after iuu_uart_on() */
825 status = iuu_uart_flush(port);
826 if (status != IUU_OPERATION_OK)
827 dbg("%s - uart_flush error", __func__);
828 uart_enable_failed:
829 kfree(buf);
830 return status;
831 }
832
833 /* Diables the IUU UART (a.k.a. the Phoenix voiderface) */
834 static int iuu_uart_off(struct usb_serial_port *port)
835 {
836 int status;
837 u8 *buf;
838 buf = kmalloc(1, GFP_KERNEL);
839 if (!buf)
840 return -ENOMEM;
841 buf[0] = IUU_UART_DISABLE;
842
843 status = bulk_immediate(port, buf, 1);
844 if (status != IUU_OPERATION_OK)
845 dbg("%s - uart_off error", __func__);
846
847 kfree(buf);
848 return status;
849 }
850
851 static int iuu_uart_baud(struct usb_serial_port *port, u32 baud,
852 u32 *actual, u8 parity)
853 {
854 int status;
855 u8 *dataout;
856 u8 DataCount = 0;
857 u8 T1Frekvens = 0;
858 u8 T1reload = 0;
859 unsigned int T1FrekvensHZ = 0;
860
861 dataout = kmalloc(sizeof(u8) * 5, GFP_KERNEL);
862
863 if (!dataout)
864 return -ENOMEM;
865
866 if (baud < 1200 || baud > 230400) {
867 kfree(dataout);
868 return IUU_INVALID_PARAMETER;
869 }
870 if (baud > 977) {
871 T1Frekvens = 3;
872 T1FrekvensHZ = 500000;
873 }
874
875 if (baud > 3906) {
876 T1Frekvens = 2;
877 T1FrekvensHZ = 2000000;
878 }
879
880 if (baud > 11718) {
881 T1Frekvens = 1;
882 T1FrekvensHZ = 6000000;
883 }
884
885 if (baud > 46875) {
886 T1Frekvens = 0;
887 T1FrekvensHZ = 24000000;
888 }
889
890 T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2));
891
892 /* magic number here: ENTER_FIRMWARE_UPDATE; */
893 dataout[DataCount++] = IUU_UART_ESC;
894 /* magic number here: CHANGE_BAUD; */
895 dataout[DataCount++] = IUU_UART_CHANGE;
896 dataout[DataCount++] = T1Frekvens;
897 dataout[DataCount++] = T1reload;
898
899 *actual = (T1FrekvensHZ / (256 - T1reload)) / 2;
900
901 switch (parity & 0x0F) {
902 case IUU_PARITY_NONE:
903 dataout[DataCount++] = 0x00;
904 break;
905 case IUU_PARITY_EVEN:
906 dataout[DataCount++] = 0x01;
907 break;
908 case IUU_PARITY_ODD:
909 dataout[DataCount++] = 0x02;
910 break;
911 case IUU_PARITY_MARK:
912 dataout[DataCount++] = 0x03;
913 break;
914 case IUU_PARITY_SPACE:
915 dataout[DataCount++] = 0x04;
916 break;
917 default:
918 kfree(dataout);
919 return IUU_INVALID_PARAMETER;
920 break;
921 }
922
923 switch (parity & 0xF0) {
924 case IUU_ONE_STOP_BIT:
925 dataout[DataCount - 1] |= IUU_ONE_STOP_BIT;
926 break;
927
928 case IUU_TWO_STOP_BITS:
929 dataout[DataCount - 1] |= IUU_TWO_STOP_BITS;
930 break;
931 default:
932 kfree(dataout);
933 return IUU_INVALID_PARAMETER;
934 break;
935 }
936
937 status = bulk_immediate(port, dataout, DataCount);
938 if (status != IUU_OPERATION_OK)
939 dbg("%s - uart_off error", __func__);
940 kfree(dataout);
941 return status;
942 }
943
944 static void iuu_set_termios(struct tty_struct *tty,
945 struct usb_serial_port *port, struct ktermios *old_termios)
946 {
947 const u32 supported_mask = CMSPAR|PARENB|PARODD;
948
949 unsigned int cflag = tty->termios->c_cflag;
950 int status;
951 u32 actual;
952 u32 parity;
953 int csize = CS7;
954 int baud = 9600; /* Fixed for the moment */
955 u32 newval = cflag & supported_mask;
956
957 /* compute the parity parameter */
958 parity = 0;
959 if (cflag & CMSPAR) { /* Using mark space */
960 if (cflag & PARODD)
961 parity |= IUU_PARITY_SPACE;
962 else
963 parity |= IUU_PARITY_MARK;
964 } else if (!(cflag & PARENB)) {
965 parity |= IUU_PARITY_NONE;
966 csize = CS8;
967 } else if (cflag & PARODD)
968 parity |= IUU_PARITY_ODD;
969 else
970 parity |= IUU_PARITY_EVEN;
971
972 parity |= (cflag & CSTOPB ? IUU_TWO_STOP_BITS : IUU_ONE_STOP_BIT);
973
974 /* set it */
975 status = iuu_uart_baud(port,
976 (clockmode == 2) ? 16457 : 9600 * boost / 100,
977 &actual, parity);
978
979 /* set the termios value to the real one, so the user now what has
980 * changed. We support few fields so its easies to copy the old hw
981 * settings back over and then adjust them
982 */
983 if (old_termios)
984 tty_termios_copy_hw(tty->termios, old_termios);
985 if (status != 0) /* Set failed - return old bits */
986 return;
987 /* Re-encode speed, parity and csize */
988 tty_encode_baud_rate(tty, baud, baud);
989 tty->termios->c_cflag &= ~(supported_mask|CSIZE);
990 tty->termios->c_cflag |= newval | csize;
991 }
992
993 static void iuu_close(struct usb_serial_port *port)
994 {
995 /* iuu_led (port,255,0,0,0); */
996 struct usb_serial *serial;
997
998 serial = port->serial;
999 if (!serial)
1000 return;
1001
1002 dbg("%s - port %d", __func__, port->number);
1003
1004 iuu_uart_off(port);
1005 if (serial->dev) {
1006 /* free writebuf */
1007 /* shutdown our urbs */
1008 dbg("%s - shutting down urbs", __func__);
1009 usb_kill_urb(port->write_urb);
1010 usb_kill_urb(port->read_urb);
1011 usb_kill_urb(port->interrupt_in_urb);
1012 msleep(1000);
1013 /* wait one second to free all buffers */
1014 iuu_led(port, 0, 0, 0xF000, 0xFF);
1015 msleep(1000);
1016 usb_reset_device(port->serial->dev);
1017 }
1018 }
1019
1020 static void iuu_init_termios(struct tty_struct *tty)
1021 {
1022 *(tty->termios) = tty_std_termios;
1023 tty->termios->c_cflag = CLOCAL | CREAD | CS8 | B9600
1024 | TIOCM_CTS | CSTOPB | PARENB;
1025 tty->termios->c_ispeed = 9600;
1026 tty->termios->c_ospeed = 9600;
1027 tty->termios->c_lflag = 0;
1028 tty->termios->c_oflag = 0;
1029 tty->termios->c_iflag = 0;
1030 }
1031
1032 static int iuu_open(struct tty_struct *tty,
1033 struct usb_serial_port *port, struct file *filp)
1034 {
1035 struct usb_serial *serial = port->serial;
1036 u8 *buf;
1037 int result;
1038 u32 actual;
1039 struct iuu_private *priv = usb_get_serial_port_data(port);
1040
1041 dbg("%s - port %d", __func__, port->number);
1042 usb_clear_halt(serial->dev, port->write_urb->pipe);
1043 usb_clear_halt(serial->dev, port->read_urb->pipe);
1044
1045 buf = kmalloc(10, GFP_KERNEL);
1046 if (buf == NULL)
1047 return -ENOMEM;
1048
1049 /* fixup the endpoint buffer size */
1050 kfree(port->bulk_out_buffer);
1051 port->bulk_out_buffer = kmalloc(512, GFP_KERNEL);
1052 port->bulk_out_size = 512;
1053 kfree(port->bulk_in_buffer);
1054 port->bulk_in_buffer = kmalloc(512, GFP_KERNEL);
1055 port->bulk_in_size = 512;
1056
1057 if (!port->bulk_out_buffer || !port->bulk_in_buffer) {
1058 kfree(port->bulk_out_buffer);
1059 kfree(port->bulk_in_buffer);
1060 kfree(buf);
1061 return -ENOMEM;
1062 }
1063
1064 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1065 usb_sndbulkpipe(port->serial->dev,
1066 port->bulk_out_endpointAddress),
1067 port->bulk_out_buffer, 512,
1068 NULL, NULL);
1069
1070
1071 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
1072 usb_rcvbulkpipe(port->serial->dev,
1073 port->bulk_in_endpointAddress),
1074 port->bulk_in_buffer, 512,
1075 NULL, NULL);
1076
1077 priv->poll = 0;
1078
1079 /* initialize writebuf */
1080 #define FISH(a, b, c, d) do { \
1081 result = usb_control_msg(port->serial->dev, \
1082 usb_rcvctrlpipe(port->serial->dev, 0), \
1083 b, a, c, d, buf, 1, 1000); \
1084 dbg("0x%x:0x%x:0x%x:0x%x %d - %x", a, b, c, d, result, \
1085 buf[0]); } while (0);
1086
1087 #define SOUP(a, b, c, d) do { \
1088 result = usb_control_msg(port->serial->dev, \
1089 usb_sndctrlpipe(port->serial->dev, 0), \
1090 b, a, c, d, NULL, 0, 1000); \
1091 dbg("0x%x:0x%x:0x%x:0x%x %d", a, b, c, d, result); } while (0)
1092
1093 /* This is not UART related but IUU USB driver related or something */
1094 /* like that. Basically no IUU will accept any commands from the USB */
1095 /* host unless it has received the following message */
1096 /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */
1097
1098 SOUP(0x03, 0x02, 0x02, 0x0);
1099 kfree(buf);
1100 iuu_led(port, 0xF000, 0xF000, 0, 0xFF);
1101 iuu_uart_on(port);
1102 if (boost < 100)
1103 boost = 100;
1104 switch (clockmode) {
1105 case 2: /* 3.680 Mhz */
1106 iuu_clk(port, IUU_CLK_3680000 * boost / 100);
1107 result =
1108 iuu_uart_baud(port, 9600 * boost / 100, &actual,
1109 IUU_PARITY_EVEN);
1110 break;
1111 case 3: /* 6.00 Mhz */
1112 iuu_clk(port, IUU_CLK_6000000 * boost / 100);
1113 result =
1114 iuu_uart_baud(port, 16457 * boost / 100, &actual,
1115 IUU_PARITY_EVEN);
1116 break;
1117 default: /* 3.579 Mhz */
1118 iuu_clk(port, IUU_CLK_3579000 * boost / 100);
1119 result =
1120 iuu_uart_baud(port, 9600 * boost / 100, &actual,
1121 IUU_PARITY_EVEN);
1122 }
1123
1124 /* set the cardin cardout signals */
1125 switch (cdmode) {
1126 case 0:
1127 iuu_cardin = 0;
1128 iuu_cardout = 0;
1129 break;
1130 case 1:
1131 iuu_cardin = TIOCM_CD;
1132 iuu_cardout = 0;
1133 break;
1134 case 2:
1135 iuu_cardin = 0;
1136 iuu_cardout = TIOCM_CD;
1137 break;
1138 case 3:
1139 iuu_cardin = TIOCM_DSR;
1140 iuu_cardout = 0;
1141 break;
1142 case 4:
1143 iuu_cardin = 0;
1144 iuu_cardout = TIOCM_DSR;
1145 break;
1146 case 5:
1147 iuu_cardin = TIOCM_CTS;
1148 iuu_cardout = 0;
1149 break;
1150 case 6:
1151 iuu_cardin = 0;
1152 iuu_cardout = TIOCM_CTS;
1153 break;
1154 case 7:
1155 iuu_cardin = TIOCM_RNG;
1156 iuu_cardout = 0;
1157 break;
1158 case 8:
1159 iuu_cardin = 0;
1160 iuu_cardout = TIOCM_RNG;
1161 }
1162
1163 iuu_uart_flush(port);
1164
1165 dbg("%s - initialization done", __func__);
1166
1167 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
1168 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1169 usb_sndbulkpipe(port->serial->dev,
1170 port->bulk_out_endpointAddress),
1171 port->write_urb->transfer_buffer, 1,
1172 read_rxcmd_callback, port);
1173 result = usb_submit_urb(port->write_urb, GFP_KERNEL);
1174
1175 if (result) {
1176 dev_err(&port->dev, "%s - failed submitting read urb,"
1177 " error %d\n", __func__, result);
1178 iuu_close(port);
1179 return -EPROTO;
1180 } else {
1181 dbg("%s - rxcmd OK", __func__);
1182 }
1183 return result;
1184 }
1185
1186 static struct usb_serial_driver iuu_device = {
1187 .driver = {
1188 .owner = THIS_MODULE,
1189 .name = "iuu_phoenix",
1190 },
1191 .id_table = id_table,
1192 .num_ports = 1,
1193 .open = iuu_open,
1194 .close = iuu_close,
1195 .write = iuu_uart_write,
1196 .read_bulk_callback = iuu_uart_read_callback,
1197 .tiocmget = iuu_tiocmget,
1198 .tiocmset = iuu_tiocmset,
1199 .set_termios = iuu_set_termios,
1200 .init_termios = iuu_init_termios,
1201 .attach = iuu_startup,
1202 .release = iuu_release,
1203 };
1204
1205 static int __init iuu_init(void)
1206 {
1207 int retval;
1208 retval = usb_serial_register(&iuu_device);
1209 if (retval)
1210 goto failed_usb_serial_register;
1211 retval = usb_register(&iuu_driver);
1212 if (retval)
1213 goto failed_usb_register;
1214 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
1215 DRIVER_DESC "\n");
1216 return 0;
1217 failed_usb_register:
1218 usb_serial_deregister(&iuu_device);
1219 failed_usb_serial_register:
1220 return retval;
1221 }
1222
1223 static void __exit iuu_exit(void)
1224 {
1225 usb_deregister(&iuu_driver);
1226 usb_serial_deregister(&iuu_device);
1227 }
1228
1229 module_init(iuu_init);
1230 module_exit(iuu_exit);
1231
1232 MODULE_AUTHOR("Alain Degreffe eczema@ecze.com");
1233
1234 MODULE_DESCRIPTION(DRIVER_DESC);
1235 MODULE_LICENSE("GPL");
1236
1237 MODULE_VERSION(DRIVER_VERSION);
1238 module_param(debug, bool, S_IRUGO | S_IWUSR);
1239 MODULE_PARM_DESC(debug, "Debug enabled or not");
1240
1241 module_param(xmas, bool, S_IRUGO | S_IWUSR);
1242 MODULE_PARM_DESC(xmas, "xmas color enabled or not");
1243
1244 module_param(boost, int, S_IRUGO | S_IWUSR);
1245 MODULE_PARM_DESC(boost, "overclock boost percent 100 to 500");
1246
1247 module_param(clockmode, int, S_IRUGO | S_IWUSR);
1248 MODULE_PARM_DESC(clockmode, "1=3Mhz579,2=3Mhz680,3=6Mhz");
1249
1250 module_param(cdmode, int, S_IRUGO | S_IWUSR);
1251 MODULE_PARM_DESC(cdmode, "Card detect mode 0=none, 1=CD, 2=!CD, 3=DSR, "
1252 "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING");
1253
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