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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/init.h>
21#include <linux/slab.h>
22#include <linux/tty.h>
23#include <linux/tty_driver.h>
24#include <linux/tty_flip.h>
25#include <linux/serial.h>
26#include <linux/module.h>
27#include <linux/moduleparam.h>
28#include <linux/spinlock.h>
29#include <linux/uaccess.h>
30#include <linux/usb.h>
31#include <linux/usb/serial.h>
32#include "iuu_phoenix.h"
33#include <linux/random.h>
34
35
36#ifdef CONFIG_USB_SERIAL_DEBUG
37static int debug = 1;
38#else
39static int debug;
40#endif
41
42/*
43 * Version Information
44 */
45#define DRIVER_VERSION "v0.12"
46#define DRIVER_DESC "Infinity USB Unlimited Phoenix driver"
47
48static const struct usb_device_id id_table[] = {
49 {USB_DEVICE(IUU_USB_VENDOR_ID, IUU_USB_PRODUCT_ID)},
50 {} /* Terminating entry */
51};
52MODULE_DEVICE_TABLE(usb, id_table);
53
54static struct usb_driver iuu_driver = {
55 .name = "iuu_phoenix",
56 .probe = usb_serial_probe,
57 .disconnect = usb_serial_disconnect,
58 .id_table = id_table,
59 .no_dynamic_id = 1,
60};
61
62/* turbo parameter */
63static int boost = 100;
64static int clockmode = 1;
65static int cdmode = 1;
66static int iuu_cardin;
67static int iuu_cardout;
68static int xmas;
69static int vcc_default = 5;
70
71static void read_rxcmd_callback(struct urb *urb);
72
73struct iuu_private {
74 spinlock_t lock; /* store irq state */
75 wait_queue_head_t delta_msr_wait;
76 u8 line_status;
77 int tiostatus; /* store IUART SIGNAL for tiocmget call */
78 u8 reset; /* if 1 reset is needed */
79 int poll; /* number of poll */
80 u8 *writebuf; /* buffer for writing to device */
81 int writelen; /* num of byte to write to device */
82 u8 *buf; /* used for initialize speed */
83 u8 *dbgbuf; /* debug buffer */
84 u8 len;
85 int vcc; /* vcc (either 3 or 5 V) */
86 u32 baud;
87 u32 boost;
88 u32 clk;
89};
90
91
92static void iuu_free_buf(struct iuu_private *priv)
93{
94 kfree(priv->buf);
95 kfree(priv->dbgbuf);
96 kfree(priv->writebuf);
97}
98
99static int iuu_alloc_buf(struct iuu_private *priv)
100{
101 priv->buf = kzalloc(256, GFP_KERNEL);
102 priv->dbgbuf = kzalloc(256, GFP_KERNEL);
103 priv->writebuf = kzalloc(256, GFP_KERNEL);
104 if (!priv->buf || !priv->dbgbuf || !priv->writebuf) {
105 iuu_free_buf(priv);
106 dbg("%s problem allocation buffer", __func__);
107 return -ENOMEM;
108 }
109 dbg("%s - Privates buffers allocation success", __func__);
110 return 0;
111}
112
113static int iuu_startup(struct usb_serial *serial)
114{
115 struct iuu_private *priv;
116 priv = kzalloc(sizeof(struct iuu_private), GFP_KERNEL);
117 dbg("%s- priv allocation success", __func__);
118 if (!priv)
119 return -ENOMEM;
120 if (iuu_alloc_buf(priv)) {
121 kfree(priv);
122 return -ENOMEM;
123 }
124 priv->vcc = vcc_default;
125 spin_lock_init(&priv->lock);
126 init_waitqueue_head(&priv->delta_msr_wait);
127 usb_set_serial_port_data(serial->port[0], priv);
128 return 0;
129}
130
131/* Release function */
132static void iuu_release(struct usb_serial *serial)
133{
134 struct usb_serial_port *port = serial->port[0];
135 struct iuu_private *priv = usb_get_serial_port_data(port);
136 if (!port)
137 return;
138
139 dbg("%s", __func__);
140
141 if (priv) {
142 iuu_free_buf(priv);
143 dbg("%s - I will free all", __func__);
144 usb_set_serial_port_data(port, NULL);
145
146 dbg("%s - priv is not anymore in port structure", __func__);
147 kfree(priv);
148
149 dbg("%s priv is now kfree", __func__);
150 }
151}
152
153static int iuu_tiocmset(struct tty_struct *tty,
154 unsigned int set, unsigned int clear)
155{
156 struct usb_serial_port *port = tty->driver_data;
157 struct iuu_private *priv = usb_get_serial_port_data(port);
158 unsigned long flags;
159
160 /* FIXME: locking on tiomstatus */
161 dbg("%s (%d) msg : SET = 0x%04x, CLEAR = 0x%04x ", __func__,
162 port->number, set, clear);
163
164 spin_lock_irqsave(&priv->lock, flags);
165
166 if ((set & TIOCM_RTS) && !(priv->tiostatus == TIOCM_RTS)) {
167 dbg("%s TIOCMSET RESET called !!!", __func__);
168 priv->reset = 1;
169 }
170 if (set & TIOCM_RTS)
171 priv->tiostatus = TIOCM_RTS;
172
173 spin_unlock_irqrestore(&priv->lock, flags);
174 return 0;
175}
176
177/* This is used to provide a carrier detect mechanism
178 * When a card is present, the response is 0x00
179 * When no card , the reader respond with TIOCM_CD
180 * This is known as CD autodetect mechanism
181 */
182static int iuu_tiocmget(struct tty_struct *tty)
183{
184 struct usb_serial_port *port = tty->driver_data;
185 struct iuu_private *priv = usb_get_serial_port_data(port);
186 unsigned long flags;
187 int rc;
188
189 spin_lock_irqsave(&priv->lock, flags);
190 rc = priv->tiostatus;
191 spin_unlock_irqrestore(&priv->lock, flags);
192
193 return rc;
194}
195
196static void iuu_rxcmd(struct urb *urb)
197{
198 struct usb_serial_port *port = urb->context;
199 int result;
200 int status = urb->status;
201
202 dbg("%s - enter", __func__);
203
204 if (status) {
205 dbg("%s - status = %d", __func__, status);
206 /* error stop all */
207 return;
208 }
209
210
211 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
212 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
213 usb_sndbulkpipe(port->serial->dev,
214 port->bulk_out_endpointAddress),
215 port->write_urb->transfer_buffer, 1,
216 read_rxcmd_callback, port);
217 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
218}
219
220static int iuu_reset(struct usb_serial_port *port, u8 wt)
221{
222 struct iuu_private *priv = usb_get_serial_port_data(port);
223 int result;
224 char *buf_ptr = port->write_urb->transfer_buffer;
225 dbg("%s - enter", __func__);
226
227 /* Prepare the reset sequence */
228
229 *buf_ptr++ = IUU_RST_SET;
230 *buf_ptr++ = IUU_DELAY_MS;
231 *buf_ptr++ = wt;
232 *buf_ptr = IUU_RST_CLEAR;
233
234 /* send the sequence */
235
236 usb_fill_bulk_urb(port->write_urb,
237 port->serial->dev,
238 usb_sndbulkpipe(port->serial->dev,
239 port->bulk_out_endpointAddress),
240 port->write_urb->transfer_buffer, 4, iuu_rxcmd, port);
241 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
242 priv->reset = 0;
243 return result;
244}
245
246/* Status Function
247 * Return value is
248 * 0x00 = no card
249 * 0x01 = smartcard
250 * 0x02 = sim card
251 */
252static void iuu_update_status_callback(struct urb *urb)
253{
254 struct usb_serial_port *port = urb->context;
255 struct iuu_private *priv = usb_get_serial_port_data(port);
256 u8 *st;
257 int status = urb->status;
258
259 dbg("%s - enter", __func__);
260
261 if (status) {
262 dbg("%s - status = %d", __func__, status);
263 /* error stop all */
264 return;
265 }
266
267 st = urb->transfer_buffer;
268 dbg("%s - enter", __func__);
269 if (urb->actual_length == 1) {
270 switch (st[0]) {
271 case 0x1:
272 priv->tiostatus = iuu_cardout;
273 break;
274 case 0x0:
275 priv->tiostatus = iuu_cardin;
276 break;
277 default:
278 priv->tiostatus = iuu_cardin;
279 }
280 }
281 iuu_rxcmd(urb);
282}
283
284static void iuu_status_callback(struct urb *urb)
285{
286 struct usb_serial_port *port = urb->context;
287 int result;
288 int status = urb->status;
289
290 dbg("%s - status = %d", __func__, status);
291 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
292 usb_rcvbulkpipe(port->serial->dev,
293 port->bulk_in_endpointAddress),
294 port->read_urb->transfer_buffer, 256,
295 iuu_update_status_callback, port);
296 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
297}
298
299static int iuu_status(struct usb_serial_port *port)
300{
301 int result;
302
303 dbg("%s - enter", __func__);
304
305 memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1);
306 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
307 usb_sndbulkpipe(port->serial->dev,
308 port->bulk_out_endpointAddress),
309 port->write_urb->transfer_buffer, 1,
310 iuu_status_callback, port);
311 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
312 return result;
313
314}
315
316static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
317{
318 int status;
319 struct usb_serial *serial = port->serial;
320 int actual = 0;
321
322 dbg("%s - enter", __func__);
323
324 /* send the data out the bulk port */
325
326 status =
327 usb_bulk_msg(serial->dev,
328 usb_sndbulkpipe(serial->dev,
329 port->bulk_out_endpointAddress), buf,
330 count, &actual, HZ * 1);
331
332 if (status != IUU_OPERATION_OK)
333 dbg("%s - error = %2x", __func__, status);
334 else
335 dbg("%s - write OK !", __func__);
336 return status;
337}
338
339static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
340{
341 int status;
342 struct usb_serial *serial = port->serial;
343 int actual = 0;
344
345 dbg("%s - enter", __func__);
346
347 /* send the data out the bulk port */
348
349 status =
350 usb_bulk_msg(serial->dev,
351 usb_rcvbulkpipe(serial->dev,
352 port->bulk_in_endpointAddress), buf,
353 count, &actual, HZ * 1);
354
355 if (status != IUU_OPERATION_OK)
356 dbg("%s - error = %2x", __func__, status);
357 else
358 dbg("%s - read OK !", __func__);
359 return status;
360}
361
362static int iuu_led(struct usb_serial_port *port, unsigned int R,
363 unsigned int G, unsigned int B, u8 f)
364{
365 int status;
366 u8 *buf;
367 buf = kmalloc(8, GFP_KERNEL);
368 if (!buf)
369 return -ENOMEM;
370
371 dbg("%s - enter", __func__);
372
373 buf[0] = IUU_SET_LED;
374 buf[1] = R & 0xFF;
375 buf[2] = (R >> 8) & 0xFF;
376 buf[3] = G & 0xFF;
377 buf[4] = (G >> 8) & 0xFF;
378 buf[5] = B & 0xFF;
379 buf[6] = (B >> 8) & 0xFF;
380 buf[7] = f;
381 status = bulk_immediate(port, buf, 8);
382 kfree(buf);
383 if (status != IUU_OPERATION_OK)
384 dbg("%s - led error status = %2x", __func__, status);
385 else
386 dbg("%s - led OK !", __func__);
387 return IUU_OPERATION_OK;
388}
389
390static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1,
391 u8 b2, u8 freq)
392{
393 *buf++ = IUU_SET_LED;
394 *buf++ = r1;
395 *buf++ = r2;
396 *buf++ = g1;
397 *buf++ = g2;
398 *buf++ = b1;
399 *buf++ = b2;
400 *buf = freq;
401}
402
403static void iuu_led_activity_on(struct urb *urb)
404{
405 struct usb_serial_port *port = urb->context;
406 int result;
407 char *buf_ptr = port->write_urb->transfer_buffer;
408 *buf_ptr++ = IUU_SET_LED;
409 if (xmas == 1) {
410 get_random_bytes(buf_ptr, 6);
411 *(buf_ptr+7) = 1;
412 } else {
413 iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255);
414 }
415
416 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
417 usb_sndbulkpipe(port->serial->dev,
418 port->bulk_out_endpointAddress),
419 port->write_urb->transfer_buffer, 8 ,
420 iuu_rxcmd, port);
421 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
422}
423
424static void iuu_led_activity_off(struct urb *urb)
425{
426 struct usb_serial_port *port = urb->context;
427 int result;
428 char *buf_ptr = port->write_urb->transfer_buffer;
429 if (xmas == 1) {
430 iuu_rxcmd(urb);
431 return;
432 } else {
433 *buf_ptr++ = IUU_SET_LED;
434 iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255);
435 }
436 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
437 usb_sndbulkpipe(port->serial->dev,
438 port->bulk_out_endpointAddress),
439 port->write_urb->transfer_buffer, 8 ,
440 iuu_rxcmd, port);
441 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
442}
443
444
445
446static int iuu_clk(struct usb_serial_port *port, int dwFrq)
447{
448 int status;
449 struct iuu_private *priv = usb_get_serial_port_data(port);
450 int Count = 0;
451 u8 FrqGenAdr = 0x69;
452 u8 DIV = 0; /* 8bit */
453 u8 XDRV = 0; /* 8bit */
454 u8 PUMP = 0; /* 3bit */
455 u8 PBmsb = 0; /* 2bit */
456 u8 PBlsb = 0; /* 8bit */
457 u8 PO = 0; /* 1bit */
458 u8 Q = 0; /* 7bit */
459 /* 24bit = 3bytes */
460 unsigned int P = 0;
461 unsigned int P2 = 0;
462 int frq = (int)dwFrq;
463
464 dbg("%s - enter", __func__);
465
466 if (frq == 0) {
467 priv->buf[Count++] = IUU_UART_WRITE_I2C;
468 priv->buf[Count++] = FrqGenAdr << 1;
469 priv->buf[Count++] = 0x09;
470 priv->buf[Count++] = 0x00;
471
472 status = bulk_immediate(port, (u8 *) priv->buf, Count);
473 if (status != 0) {
474 dbg("%s - write error ", __func__);
475 return status;
476 }
477 } else if (frq == 3579000) {
478 DIV = 100;
479 P = 1193;
480 Q = 40;
481 XDRV = 0;
482 } else if (frq == 3680000) {
483 DIV = 105;
484 P = 161;
485 Q = 5;
486 XDRV = 0;
487 } else if (frq == 6000000) {
488 DIV = 66;
489 P = 66;
490 Q = 2;
491 XDRV = 0x28;
492 } else {
493 unsigned int result = 0;
494 unsigned int tmp = 0;
495 unsigned int check;
496 unsigned int check2;
497 char found = 0x00;
498 unsigned int lQ = 2;
499 unsigned int lP = 2055;
500 unsigned int lDiv = 4;
501
502 for (lQ = 2; lQ <= 47 && !found; lQ++)
503 for (lP = 2055; lP >= 8 && !found; lP--)
504 for (lDiv = 4; lDiv <= 127 && !found; lDiv++) {
505 tmp = (12000000 / lDiv) * (lP / lQ);
506 if (abs((int)(tmp - frq)) <
507 abs((int)(frq - result))) {
508 check2 = (12000000 / lQ);
509 if (check2 < 250000)
510 continue;
511 check = (12000000 / lQ) * lP;
512 if (check > 400000000)
513 continue;
514 if (check < 100000000)
515 continue;
516 if (lDiv < 4 || lDiv > 127)
517 continue;
518 result = tmp;
519 P = lP;
520 DIV = lDiv;
521 Q = lQ;
522 if (result == frq)
523 found = 0x01;
524 }
525 }
526 }
527 P2 = ((P - PO) / 2) - 4;
528 DIV = DIV;
529 PUMP = 0x04;
530 PBmsb = (P2 >> 8 & 0x03);
531 PBlsb = P2 & 0xFF;
532 PO = (P >> 10) & 0x01;
533 Q = Q - 2;
534
535 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
536 priv->buf[Count++] = FrqGenAdr << 1;
537 priv->buf[Count++] = 0x09;
538 priv->buf[Count++] = 0x20; /* Adr = 0x09 */
539 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
540 priv->buf[Count++] = FrqGenAdr << 1;
541 priv->buf[Count++] = 0x0C;
542 priv->buf[Count++] = DIV; /* Adr = 0x0C */
543 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
544 priv->buf[Count++] = FrqGenAdr << 1;
545 priv->buf[Count++] = 0x12;
546 priv->buf[Count++] = XDRV; /* Adr = 0x12 */
547 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
548 priv->buf[Count++] = FrqGenAdr << 1;
549 priv->buf[Count++] = 0x13;
550 priv->buf[Count++] = 0x6B; /* Adr = 0x13 */
551 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
552 priv->buf[Count++] = FrqGenAdr << 1;
553 priv->buf[Count++] = 0x40;
554 priv->buf[Count++] = (0xC0 | ((PUMP & 0x07) << 2)) |
555 (PBmsb & 0x03); /* Adr = 0x40 */
556 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
557 priv->buf[Count++] = FrqGenAdr << 1;
558 priv->buf[Count++] = 0x41;
559 priv->buf[Count++] = PBlsb; /* Adr = 0x41 */
560 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
561 priv->buf[Count++] = FrqGenAdr << 1;
562 priv->buf[Count++] = 0x42;
563 priv->buf[Count++] = Q | (((PO & 0x01) << 7)); /* Adr = 0x42 */
564 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
565 priv->buf[Count++] = FrqGenAdr << 1;
566 priv->buf[Count++] = 0x44;
567 priv->buf[Count++] = (char)0xFF; /* Adr = 0x44 */
568 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
569 priv->buf[Count++] = FrqGenAdr << 1;
570 priv->buf[Count++] = 0x45;
571 priv->buf[Count++] = (char)0xFE; /* Adr = 0x45 */
572 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
573 priv->buf[Count++] = FrqGenAdr << 1;
574 priv->buf[Count++] = 0x46;
575 priv->buf[Count++] = 0x7F; /* Adr = 0x46 */
576 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
577 priv->buf[Count++] = FrqGenAdr << 1;
578 priv->buf[Count++] = 0x47;
579 priv->buf[Count++] = (char)0x84; /* Adr = 0x47 */
580
581 status = bulk_immediate(port, (u8 *) priv->buf, Count);
582 if (status != IUU_OPERATION_OK)
583 dbg("%s - write error ", __func__);
584 return status;
585}
586
587static int iuu_uart_flush(struct usb_serial_port *port)
588{
589 int i;
590 int status;
591 u8 rxcmd = IUU_UART_RX;
592 struct iuu_private *priv = usb_get_serial_port_data(port);
593
594 dbg("%s - enter", __func__);
595
596 if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0)
597 return -EIO;
598
599 for (i = 0; i < 2; i++) {
600 status = bulk_immediate(port, &rxcmd, 1);
601 if (status != IUU_OPERATION_OK) {
602 dbg("%s - uart_flush_write error", __func__);
603 return status;
604 }
605
606 status = read_immediate(port, &priv->len, 1);
607 if (status != IUU_OPERATION_OK) {
608 dbg("%s - uart_flush_read error", __func__);
609 return status;
610 }
611
612 if (priv->len > 0) {
613 dbg("%s - uart_flush datalen is : %i ", __func__,
614 priv->len);
615 status = read_immediate(port, priv->buf, priv->len);
616 if (status != IUU_OPERATION_OK) {
617 dbg("%s - uart_flush_read error", __func__);
618 return status;
619 }
620 }
621 }
622 dbg("%s - uart_flush_read OK!", __func__);
623 iuu_led(port, 0, 0xF000, 0, 0xFF);
624 return status;
625}
626
627static void read_buf_callback(struct urb *urb)
628{
629 struct usb_serial_port *port = urb->context;
630 unsigned char *data = urb->transfer_buffer;
631 struct tty_struct *tty;
632 int status = urb->status;
633
634 dbg("%s - status = %d", __func__, status);
635
636 if (status) {
637 if (status == -EPROTO) {
638 /* reschedule needed */
639 }
640 return;
641 }
642
643 dbg("%s - %i chars to write", __func__, urb->actual_length);
644 tty = tty_port_tty_get(&port->port);
645 if (data == NULL)
646 dbg("%s - data is NULL !!!", __func__);
647 if (tty && urb->actual_length && data) {
648 tty_insert_flip_string(tty, data, urb->actual_length);
649 tty_flip_buffer_push(tty);
650 }
651 tty_kref_put(tty);
652 iuu_led_activity_on(urb);
653}
654
655static int iuu_bulk_write(struct usb_serial_port *port)
656{
657 struct iuu_private *priv = usb_get_serial_port_data(port);
658 unsigned long flags;
659 int result;
660 int i;
661 int buf_len;
662 char *buf_ptr = port->write_urb->transfer_buffer;
663 dbg("%s - enter", __func__);
664
665 spin_lock_irqsave(&priv->lock, flags);
666 *buf_ptr++ = IUU_UART_ESC;
667 *buf_ptr++ = IUU_UART_TX;
668 *buf_ptr++ = priv->writelen;
669
670 memcpy(buf_ptr, priv->writebuf, priv->writelen);
671 buf_len = priv->writelen;
672 priv->writelen = 0;
673 spin_unlock_irqrestore(&priv->lock, flags);
674 if (debug == 1) {
675 for (i = 0; i < buf_len; i++)
676 sprintf(priv->dbgbuf + i*2 ,
677 "%02X", priv->writebuf[i]);
678 priv->dbgbuf[buf_len+i*2] = 0;
679 dbg("%s - writing %i chars : %s", __func__,
680 buf_len, priv->dbgbuf);
681 }
682 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
683 usb_sndbulkpipe(port->serial->dev,
684 port->bulk_out_endpointAddress),
685 port->write_urb->transfer_buffer, buf_len + 3,
686 iuu_rxcmd, port);
687 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
688 usb_serial_port_softint(port);
689 return result;
690}
691
692static int iuu_read_buf(struct usb_serial_port *port, int len)
693{
694 int result;
695 dbg("%s - enter", __func__);
696
697 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
698 usb_rcvbulkpipe(port->serial->dev,
699 port->bulk_in_endpointAddress),
700 port->read_urb->transfer_buffer, len,
701 read_buf_callback, port);
702 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
703 return result;
704}
705
706static void iuu_uart_read_callback(struct urb *urb)
707{
708 struct usb_serial_port *port = urb->context;
709 struct iuu_private *priv = usb_get_serial_port_data(port);
710 unsigned long flags;
711 int status = urb->status;
712 int error = 0;
713 int len = 0;
714 unsigned char *data = urb->transfer_buffer;
715 priv->poll++;
716
717 dbg("%s - enter", __func__);
718
719 if (status) {
720 dbg("%s - status = %d", __func__, status);
721 /* error stop all */
722 return;
723 }
724 if (data == NULL)
725 dbg("%s - data is NULL !!!", __func__);
726
727 if (urb->actual_length == 1 && data != NULL)
728 len = (int) data[0];
729
730 if (urb->actual_length > 1) {
731 dbg("%s - urb->actual_length = %i", __func__,
732 urb->actual_length);
733 error = 1;
734 return;
735 }
736 /* if len > 0 call readbuf */
737
738 if (len > 0 && error == 0) {
739 dbg("%s - call read buf - len to read is %i ",
740 __func__, len);
741 status = iuu_read_buf(port, len);
742 return;
743 }
744 /* need to update status ? */
745 if (priv->poll > 99) {
746 status = iuu_status(port);
747 priv->poll = 0;
748 return;
749 }
750
751 /* reset waiting ? */
752
753 if (priv->reset == 1) {
754 status = iuu_reset(port, 0xC);
755 return;
756 }
757 /* Writebuf is waiting */
758 spin_lock_irqsave(&priv->lock, flags);
759 if (priv->writelen > 0) {
760 spin_unlock_irqrestore(&priv->lock, flags);
761 status = iuu_bulk_write(port);
762 return;
763 }
764 spin_unlock_irqrestore(&priv->lock, flags);
765 /* if nothing to write call again rxcmd */
766 dbg("%s - rxcmd recall", __func__);
767 iuu_led_activity_off(urb);
768}
769
770static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port,
771 const u8 *buf, int count)
772{
773 struct iuu_private *priv = usb_get_serial_port_data(port);
774 unsigned long flags;
775 dbg("%s - enter", __func__);
776
777 if (count > 256)
778 return -ENOMEM;
779
780 spin_lock_irqsave(&priv->lock, flags);
781
782 /* fill the buffer */
783 memcpy(priv->writebuf + priv->writelen, buf, count);
784 priv->writelen += count;
785 spin_unlock_irqrestore(&priv->lock, flags);
786
787 return count;
788}
789
790static void read_rxcmd_callback(struct urb *urb)
791{
792 struct usb_serial_port *port = urb->context;
793 int result;
794 int status = urb->status;
795
796 dbg("%s - status = %d", __func__, status);
797
798 if (status) {
799 /* error stop all */
800 return;
801 }
802
803 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
804 usb_rcvbulkpipe(port->serial->dev,
805 port->bulk_in_endpointAddress),
806 port->read_urb->transfer_buffer, 256,
807 iuu_uart_read_callback, port);
808 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
809 dbg("%s - submit result = %d", __func__, result);
810}
811
812static int iuu_uart_on(struct usb_serial_port *port)
813{
814 int status;
815 u8 *buf;
816
817 buf = kmalloc(sizeof(u8) * 4, GFP_KERNEL);
818
819 if (!buf)
820 return -ENOMEM;
821
822 buf[0] = IUU_UART_ENABLE;
823 buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF);
824 buf[2] = (u8) (0x00FF & IUU_BAUD_9600);
825 buf[3] = (u8) (0x0F0 & IUU_ONE_STOP_BIT) | (0x07 & IUU_PARITY_EVEN);
826
827 status = bulk_immediate(port, buf, 4);
828 if (status != IUU_OPERATION_OK) {
829 dbg("%s - uart_on error", __func__);
830 goto uart_enable_failed;
831 }
832 /* iuu_reset() the card after iuu_uart_on() */
833 status = iuu_uart_flush(port);
834 if (status != IUU_OPERATION_OK)
835 dbg("%s - uart_flush error", __func__);
836uart_enable_failed:
837 kfree(buf);
838 return status;
839}
840
841/* Diables the IUU UART (a.k.a. the Phoenix voiderface) */
842static int iuu_uart_off(struct usb_serial_port *port)
843{
844 int status;
845 u8 *buf;
846 buf = kmalloc(1, GFP_KERNEL);
847 if (!buf)
848 return -ENOMEM;
849 buf[0] = IUU_UART_DISABLE;
850
851 status = bulk_immediate(port, buf, 1);
852 if (status != IUU_OPERATION_OK)
853 dbg("%s - uart_off error", __func__);
854
855 kfree(buf);
856 return status;
857}
858
859static int iuu_uart_baud(struct usb_serial_port *port, u32 baud_base,
860 u32 *actual, u8 parity)
861{
862 int status;
863 u32 baud;
864 u8 *dataout;
865 u8 DataCount = 0;
866 u8 T1Frekvens = 0;
867 u8 T1reload = 0;
868 unsigned int T1FrekvensHZ = 0;
869
870 dbg("%s - enter baud_base=%d", __func__, baud_base);
871 dataout = kmalloc(sizeof(u8) * 5, GFP_KERNEL);
872
873 if (!dataout)
874 return -ENOMEM;
875 /*baud = (((priv->clk / 35) * baud_base) / 100000); */
876 baud = baud_base;
877
878 if (baud < 1200 || baud > 230400) {
879 kfree(dataout);
880 return IUU_INVALID_PARAMETER;
881 }
882 if (baud > 977) {
883 T1Frekvens = 3;
884 T1FrekvensHZ = 500000;
885 }
886
887 if (baud > 3906) {
888 T1Frekvens = 2;
889 T1FrekvensHZ = 2000000;
890 }
891
892 if (baud > 11718) {
893 T1Frekvens = 1;
894 T1FrekvensHZ = 6000000;
895 }
896
897 if (baud > 46875) {
898 T1Frekvens = 0;
899 T1FrekvensHZ = 24000000;
900 }
901
902 T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2));
903
904 /* magic number here: ENTER_FIRMWARE_UPDATE; */
905 dataout[DataCount++] = IUU_UART_ESC;
906 /* magic number here: CHANGE_BAUD; */
907 dataout[DataCount++] = IUU_UART_CHANGE;
908 dataout[DataCount++] = T1Frekvens;
909 dataout[DataCount++] = T1reload;
910
911 *actual = (T1FrekvensHZ / (256 - T1reload)) / 2;
912
913 switch (parity & 0x0F) {
914 case IUU_PARITY_NONE:
915 dataout[DataCount++] = 0x00;
916 break;
917 case IUU_PARITY_EVEN:
918 dataout[DataCount++] = 0x01;
919 break;
920 case IUU_PARITY_ODD:
921 dataout[DataCount++] = 0x02;
922 break;
923 case IUU_PARITY_MARK:
924 dataout[DataCount++] = 0x03;
925 break;
926 case IUU_PARITY_SPACE:
927 dataout[DataCount++] = 0x04;
928 break;
929 default:
930 kfree(dataout);
931 return IUU_INVALID_PARAMETER;
932 break;
933 }
934
935 switch (parity & 0xF0) {
936 case IUU_ONE_STOP_BIT:
937 dataout[DataCount - 1] |= IUU_ONE_STOP_BIT;
938 break;
939
940 case IUU_TWO_STOP_BITS:
941 dataout[DataCount - 1] |= IUU_TWO_STOP_BITS;
942 break;
943 default:
944 kfree(dataout);
945 return IUU_INVALID_PARAMETER;
946 break;
947 }
948
949 status = bulk_immediate(port, dataout, DataCount);
950 if (status != IUU_OPERATION_OK)
951 dbg("%s - uart_off error", __func__);
952 kfree(dataout);
953 return status;
954}
955
956static void iuu_set_termios(struct tty_struct *tty,
957 struct usb_serial_port *port, struct ktermios *old_termios)
958{
959 const u32 supported_mask = CMSPAR|PARENB|PARODD;
960 struct iuu_private *priv = usb_get_serial_port_data(port);
961 unsigned int cflag = tty->termios->c_cflag;
962 int status;
963 u32 actual;
964 u32 parity;
965 int csize = CS7;
966 int baud;
967 u32 newval = cflag & supported_mask;
968
969 /* Just use the ospeed. ispeed should be the same. */
970 baud = tty->termios->c_ospeed;
971
972 dbg("%s - enter c_ospeed or baud=%d", __func__, baud);
973
974 /* compute the parity parameter */
975 parity = 0;
976 if (cflag & CMSPAR) { /* Using mark space */
977 if (cflag & PARODD)
978 parity |= IUU_PARITY_SPACE;
979 else
980 parity |= IUU_PARITY_MARK;
981 } else if (!(cflag & PARENB)) {
982 parity |= IUU_PARITY_NONE;
983 csize = CS8;
984 } else if (cflag & PARODD)
985 parity |= IUU_PARITY_ODD;
986 else
987 parity |= IUU_PARITY_EVEN;
988
989 parity |= (cflag & CSTOPB ? IUU_TWO_STOP_BITS : IUU_ONE_STOP_BIT);
990
991 /* set it */
992 status = iuu_uart_baud(port,
993 baud * priv->boost / 100,
994 &actual, parity);
995
996 /* set the termios value to the real one, so the user now what has
997 * changed. We support few fields so its easies to copy the old hw
998 * settings back over and then adjust them
999 */
1000 if (old_termios)
1001 tty_termios_copy_hw(tty->termios, old_termios);
1002 if (status != 0) /* Set failed - return old bits */
1003 return;
1004 /* Re-encode speed, parity and csize */
1005 tty_encode_baud_rate(tty, baud, baud);
1006 tty->termios->c_cflag &= ~(supported_mask|CSIZE);
1007 tty->termios->c_cflag |= newval | csize;
1008}
1009
1010static void iuu_close(struct usb_serial_port *port)
1011{
1012 /* iuu_led (port,255,0,0,0); */
1013 struct usb_serial *serial;
1014
1015 serial = port->serial;
1016 if (!serial)
1017 return;
1018
1019 dbg("%s - port %d", __func__, port->number);
1020
1021 iuu_uart_off(port);
1022 if (serial->dev) {
1023 /* free writebuf */
1024 /* shutdown our urbs */
1025 dbg("%s - shutting down urbs", __func__);
1026 usb_kill_urb(port->write_urb);
1027 usb_kill_urb(port->read_urb);
1028 usb_kill_urb(port->interrupt_in_urb);
1029 iuu_led(port, 0, 0, 0xF000, 0xFF);
1030 }
1031}
1032
1033static void iuu_init_termios(struct tty_struct *tty)
1034{
1035 dbg("%s - enter", __func__);
1036 *(tty->termios) = tty_std_termios;
1037 tty->termios->c_cflag = CLOCAL | CREAD | CS8 | B9600
1038 | TIOCM_CTS | CSTOPB | PARENB;
1039 tty->termios->c_ispeed = 9600;
1040 tty->termios->c_ospeed = 9600;
1041 tty->termios->c_lflag = 0;
1042 tty->termios->c_oflag = 0;
1043 tty->termios->c_iflag = 0;
1044}
1045
1046static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port)
1047{
1048 struct usb_serial *serial = port->serial;
1049 u8 *buf;
1050 int result;
1051 int baud;
1052 u32 actual;
1053 struct iuu_private *priv = usb_get_serial_port_data(port);
1054
1055 baud = tty->termios->c_ospeed;
1056 tty->termios->c_ispeed = baud;
1057 /* Re-encode speed */
1058 tty_encode_baud_rate(tty, baud, baud);
1059
1060 dbg("%s - port %d, baud %d", __func__, port->number, baud);
1061 usb_clear_halt(serial->dev, port->write_urb->pipe);
1062 usb_clear_halt(serial->dev, port->read_urb->pipe);
1063
1064 buf = kmalloc(10, GFP_KERNEL);
1065 if (buf == NULL)
1066 return -ENOMEM;
1067
1068 priv->poll = 0;
1069
1070 /* initialize writebuf */
1071#define FISH(a, b, c, d) do { \
1072 result = usb_control_msg(port->serial->dev, \
1073 usb_rcvctrlpipe(port->serial->dev, 0), \
1074 b, a, c, d, buf, 1, 1000); \
1075 dbg("0x%x:0x%x:0x%x:0x%x %d - %x", a, b, c, d, result, \
1076 buf[0]); } while (0);
1077
1078#define SOUP(a, b, c, d) do { \
1079 result = usb_control_msg(port->serial->dev, \
1080 usb_sndctrlpipe(port->serial->dev, 0), \
1081 b, a, c, d, NULL, 0, 1000); \
1082 dbg("0x%x:0x%x:0x%x:0x%x %d", a, b, c, d, result); } while (0)
1083
1084 /* This is not UART related but IUU USB driver related or something */
1085 /* like that. Basically no IUU will accept any commands from the USB */
1086 /* host unless it has received the following message */
1087 /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */
1088
1089 SOUP(0x03, 0x02, 0x02, 0x0);
1090 kfree(buf);
1091 iuu_led(port, 0xF000, 0xF000, 0, 0xFF);
1092 iuu_uart_on(port);
1093 if (boost < 100)
1094 boost = 100;
1095 priv->boost = boost;
1096 priv->baud = baud;
1097 switch (clockmode) {
1098 case 2: /* 3.680 Mhz */
1099 priv->clk = IUU_CLK_3680000;
1100 iuu_clk(port, IUU_CLK_3680000 * boost / 100);
1101 result =
1102 iuu_uart_baud(port, baud * boost / 100, &actual,
1103 IUU_PARITY_EVEN);
1104 break;
1105 case 3: /* 6.00 Mhz */
1106 iuu_clk(port, IUU_CLK_6000000 * boost / 100);
1107 priv->clk = IUU_CLK_6000000;
1108 /* Ratio of 6000000 to 3500000 for baud 9600 */
1109 result =
1110 iuu_uart_baud(port, 16457 * boost / 100, &actual,
1111 IUU_PARITY_EVEN);
1112 break;
1113 default: /* 3.579 Mhz */
1114 iuu_clk(port, IUU_CLK_3579000 * boost / 100);
1115 priv->clk = IUU_CLK_3579000;
1116 result =
1117 iuu_uart_baud(port, baud * boost / 100, &actual,
1118 IUU_PARITY_EVEN);
1119 }
1120
1121 /* set the cardin cardout signals */
1122 switch (cdmode) {
1123 case 0:
1124 iuu_cardin = 0;
1125 iuu_cardout = 0;
1126 break;
1127 case 1:
1128 iuu_cardin = TIOCM_CD;
1129 iuu_cardout = 0;
1130 break;
1131 case 2:
1132 iuu_cardin = 0;
1133 iuu_cardout = TIOCM_CD;
1134 break;
1135 case 3:
1136 iuu_cardin = TIOCM_DSR;
1137 iuu_cardout = 0;
1138 break;
1139 case 4:
1140 iuu_cardin = 0;
1141 iuu_cardout = TIOCM_DSR;
1142 break;
1143 case 5:
1144 iuu_cardin = TIOCM_CTS;
1145 iuu_cardout = 0;
1146 break;
1147 case 6:
1148 iuu_cardin = 0;
1149 iuu_cardout = TIOCM_CTS;
1150 break;
1151 case 7:
1152 iuu_cardin = TIOCM_RNG;
1153 iuu_cardout = 0;
1154 break;
1155 case 8:
1156 iuu_cardin = 0;
1157 iuu_cardout = TIOCM_RNG;
1158 }
1159
1160 iuu_uart_flush(port);
1161
1162 dbg("%s - initialization done", __func__);
1163
1164 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
1165 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1166 usb_sndbulkpipe(port->serial->dev,
1167 port->bulk_out_endpointAddress),
1168 port->write_urb->transfer_buffer, 1,
1169 read_rxcmd_callback, port);
1170 result = usb_submit_urb(port->write_urb, GFP_KERNEL);
1171
1172 if (result) {
1173 dev_err(&port->dev, "%s - failed submitting read urb,"
1174 " error %d\n", __func__, result);
1175 iuu_close(port);
1176 return -EPROTO;
1177 } else {
1178 dbg("%s - rxcmd OK", __func__);
1179 }
1180 return result;
1181}
1182
1183/* how to change VCC */
1184static int iuu_vcc_set(struct usb_serial_port *port, unsigned int vcc)
1185{
1186 int status;
1187 u8 *buf;
1188
1189 buf = kmalloc(5, GFP_KERNEL);
1190 if (!buf)
1191 return -ENOMEM;
1192
1193 dbg("%s - enter", __func__);
1194
1195 buf[0] = IUU_SET_VCC;
1196 buf[1] = vcc & 0xFF;
1197 buf[2] = (vcc >> 8) & 0xFF;
1198 buf[3] = (vcc >> 16) & 0xFF;
1199 buf[4] = (vcc >> 24) & 0xFF;
1200
1201 status = bulk_immediate(port, buf, 5);
1202 kfree(buf);
1203
1204 if (status != IUU_OPERATION_OK)
1205 dbg("%s - vcc error status = %2x", __func__, status);
1206 else
1207 dbg("%s - vcc OK !", __func__);
1208
1209 return status;
1210}
1211
1212/*
1213 * Sysfs Attributes
1214 */
1215
1216static ssize_t show_vcc_mode(struct device *dev,
1217 struct device_attribute *attr, char *buf)
1218{
1219 struct usb_serial_port *port = to_usb_serial_port(dev);
1220 struct iuu_private *priv = usb_get_serial_port_data(port);
1221
1222 return sprintf(buf, "%d\n", priv->vcc);
1223}
1224
1225static ssize_t store_vcc_mode(struct device *dev,
1226 struct device_attribute *attr, const char *buf, size_t count)
1227{
1228 struct usb_serial_port *port = to_usb_serial_port(dev);
1229 struct iuu_private *priv = usb_get_serial_port_data(port);
1230 unsigned long v;
1231
1232 if (strict_strtoul(buf, 10, &v)) {
1233 dev_err(dev, "%s - vcc_mode: %s is not a unsigned long\n",
1234 __func__, buf);
1235 goto fail_store_vcc_mode;
1236 }
1237
1238 dbg("%s: setting vcc_mode = %ld", __func__, v);
1239
1240 if ((v != 3) && (v != 5)) {
1241 dev_err(dev, "%s - vcc_mode %ld is invalid\n", __func__, v);
1242 } else {
1243 iuu_vcc_set(port, v);
1244 priv->vcc = v;
1245 }
1246fail_store_vcc_mode:
1247 return count;
1248}
1249
1250static DEVICE_ATTR(vcc_mode, S_IRUSR | S_IWUSR, show_vcc_mode,
1251 store_vcc_mode);
1252
1253static int iuu_create_sysfs_attrs(struct usb_serial_port *port)
1254{
1255 dbg("%s", __func__);
1256
1257 return device_create_file(&port->dev, &dev_attr_vcc_mode);
1258}
1259
1260static int iuu_remove_sysfs_attrs(struct usb_serial_port *port)
1261{
1262 dbg("%s", __func__);
1263
1264 device_remove_file(&port->dev, &dev_attr_vcc_mode);
1265 return 0;
1266}
1267
1268/*
1269 * End Sysfs Attributes
1270 */
1271
1272static struct usb_serial_driver iuu_device = {
1273 .driver = {
1274 .owner = THIS_MODULE,
1275 .name = "iuu_phoenix",
1276 },
1277 .id_table = id_table,
1278 .usb_driver = &iuu_driver,
1279 .num_ports = 1,
1280 .bulk_in_size = 512,
1281 .bulk_out_size = 512,
1282 .port_probe = iuu_create_sysfs_attrs,
1283 .port_remove = iuu_remove_sysfs_attrs,
1284 .open = iuu_open,
1285 .close = iuu_close,
1286 .write = iuu_uart_write,
1287 .read_bulk_callback = iuu_uart_read_callback,
1288 .tiocmget = iuu_tiocmget,
1289 .tiocmset = iuu_tiocmset,
1290 .set_termios = iuu_set_termios,
1291 .init_termios = iuu_init_termios,
1292 .attach = iuu_startup,
1293 .release = iuu_release,
1294};
1295
1296static int __init iuu_init(void)
1297{
1298 int retval;
1299 retval = usb_serial_register(&iuu_device);
1300 if (retval)
1301 goto failed_usb_serial_register;
1302 retval = usb_register(&iuu_driver);
1303 if (retval)
1304 goto failed_usb_register;
1305 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
1306 DRIVER_DESC "\n");
1307 return 0;
1308failed_usb_register:
1309 usb_serial_deregister(&iuu_device);
1310failed_usb_serial_register:
1311 return retval;
1312}
1313
1314static void __exit iuu_exit(void)
1315{
1316 usb_deregister(&iuu_driver);
1317 usb_serial_deregister(&iuu_device);
1318}
1319
1320module_init(iuu_init);
1321module_exit(iuu_exit);
1322
1323MODULE_AUTHOR("Alain Degreffe eczema@ecze.com");
1324
1325MODULE_DESCRIPTION(DRIVER_DESC);
1326MODULE_LICENSE("GPL");
1327
1328MODULE_VERSION(DRIVER_VERSION);
1329module_param(debug, bool, S_IRUGO | S_IWUSR);
1330MODULE_PARM_DESC(debug, "Debug enabled or not");
1331
1332module_param(xmas, bool, S_IRUGO | S_IWUSR);
1333MODULE_PARM_DESC(xmas, "Xmas colors enabled or not");
1334
1335module_param(boost, int, S_IRUGO | S_IWUSR);
1336MODULE_PARM_DESC(boost, "Card overclock boost (in percent 100-500)");
1337
1338module_param(clockmode, int, S_IRUGO | S_IWUSR);
1339MODULE_PARM_DESC(clockmode, "Card clock mode (1=3.579 MHz, 2=3.680 MHz, "
1340 "3=6 Mhz)");
1341
1342module_param(cdmode, int, S_IRUGO | S_IWUSR);
1343MODULE_PARM_DESC(cdmode, "Card detect mode (0=none, 1=CD, 2=!CD, 3=DSR, "
1344 "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING)");
1345
1346module_param(vcc_default, int, S_IRUGO | S_IWUSR);
1347MODULE_PARM_DESC(vcc_default, "Set default VCC (either 3 for 3.3V or 5 "
1348 "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.");