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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 void 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
113static int iuu_tiocmset(struct tty_struct *tty,
114 unsigned int set, unsigned int clear)
115{
116 struct usb_serial_port *port = tty->driver_data;
117 struct iuu_private *priv = usb_get_serial_port_data(port);
118 unsigned long flags;
119
120 /* FIXME: locking on tiomstatus */
121 dev_dbg(&port->dev, "%s msg : SET = 0x%04x, CLEAR = 0x%04x\n",
122 __func__, set, clear);
123
124 spin_lock_irqsave(&priv->lock, flags);
125
126 if ((set & TIOCM_RTS) && !(priv->tiostatus == TIOCM_RTS)) {
127 dev_dbg(&port->dev, "%s TIOCMSET RESET called !!!\n", __func__);
128 priv->reset = 1;
129 }
130 if (set & TIOCM_RTS)
131 priv->tiostatus = TIOCM_RTS;
132
133 spin_unlock_irqrestore(&priv->lock, flags);
134 return 0;
135}
136
137/* This is used to provide a carrier detect mechanism
138 * When a card is present, the response is 0x00
139 * When no card , the reader respond with TIOCM_CD
140 * This is known as CD autodetect mechanism
141 */
142static int iuu_tiocmget(struct tty_struct *tty)
143{
144 struct usb_serial_port *port = tty->driver_data;
145 struct iuu_private *priv = usb_get_serial_port_data(port);
146 unsigned long flags;
147 int rc;
148
149 spin_lock_irqsave(&priv->lock, flags);
150 rc = priv->tiostatus;
151 spin_unlock_irqrestore(&priv->lock, flags);
152
153 return rc;
154}
155
156static void iuu_rxcmd(struct urb *urb)
157{
158 struct usb_serial_port *port = urb->context;
159 int status = urb->status;
160
161 if (status) {
162 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
163 /* error stop all */
164 return;
165 }
166
167
168 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
169 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
170 usb_sndbulkpipe(port->serial->dev,
171 port->bulk_out_endpointAddress),
172 port->write_urb->transfer_buffer, 1,
173 read_rxcmd_callback, port);
174 usb_submit_urb(port->write_urb, GFP_ATOMIC);
175}
176
177static int iuu_reset(struct usb_serial_port *port, u8 wt)
178{
179 struct iuu_private *priv = usb_get_serial_port_data(port);
180 int result;
181 char *buf_ptr = port->write_urb->transfer_buffer;
182
183 /* Prepare the reset sequence */
184
185 *buf_ptr++ = IUU_RST_SET;
186 *buf_ptr++ = IUU_DELAY_MS;
187 *buf_ptr++ = wt;
188 *buf_ptr = IUU_RST_CLEAR;
189
190 /* send the sequence */
191
192 usb_fill_bulk_urb(port->write_urb,
193 port->serial->dev,
194 usb_sndbulkpipe(port->serial->dev,
195 port->bulk_out_endpointAddress),
196 port->write_urb->transfer_buffer, 4, iuu_rxcmd, port);
197 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
198 priv->reset = 0;
199 return result;
200}
201
202/* Status Function
203 * Return value is
204 * 0x00 = no card
205 * 0x01 = smartcard
206 * 0x02 = sim card
207 */
208static void iuu_update_status_callback(struct urb *urb)
209{
210 struct usb_serial_port *port = urb->context;
211 struct iuu_private *priv = usb_get_serial_port_data(port);
212 u8 *st;
213 int status = urb->status;
214
215 if (status) {
216 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
217 /* error stop all */
218 return;
219 }
220
221 st = urb->transfer_buffer;
222 dev_dbg(&port->dev, "%s - enter\n", __func__);
223 if (urb->actual_length == 1) {
224 switch (st[0]) {
225 case 0x1:
226 priv->tiostatus = iuu_cardout;
227 break;
228 case 0x0:
229 priv->tiostatus = iuu_cardin;
230 break;
231 default:
232 priv->tiostatus = iuu_cardin;
233 }
234 }
235 iuu_rxcmd(urb);
236}
237
238static void iuu_status_callback(struct urb *urb)
239{
240 struct usb_serial_port *port = urb->context;
241 int status = urb->status;
242
243 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
244 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
245 usb_rcvbulkpipe(port->serial->dev,
246 port->bulk_in_endpointAddress),
247 port->read_urb->transfer_buffer, 256,
248 iuu_update_status_callback, port);
249 usb_submit_urb(port->read_urb, GFP_ATOMIC);
250}
251
252static int iuu_status(struct usb_serial_port *port)
253{
254 int result;
255
256 memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1);
257 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
258 usb_sndbulkpipe(port->serial->dev,
259 port->bulk_out_endpointAddress),
260 port->write_urb->transfer_buffer, 1,
261 iuu_status_callback, port);
262 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
263 return result;
264
265}
266
267static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
268{
269 int status;
270 struct usb_serial *serial = port->serial;
271 int actual = 0;
272
273 /* send the data out the bulk port */
274
275 status =
276 usb_bulk_msg(serial->dev,
277 usb_sndbulkpipe(serial->dev,
278 port->bulk_out_endpointAddress), buf,
279 count, &actual, 1000);
280
281 if (status != IUU_OPERATION_OK)
282 dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status);
283 else
284 dev_dbg(&port->dev, "%s - write OK !\n", __func__);
285 return status;
286}
287
288static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
289{
290 int status;
291 struct usb_serial *serial = port->serial;
292 int actual = 0;
293
294 /* send the data out the bulk port */
295 status =
296 usb_bulk_msg(serial->dev,
297 usb_rcvbulkpipe(serial->dev,
298 port->bulk_in_endpointAddress), buf,
299 count, &actual, 1000);
300
301 if (status != IUU_OPERATION_OK)
302 dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status);
303 else
304 dev_dbg(&port->dev, "%s - read OK !\n", __func__);
305 return status;
306}
307
308static int iuu_led(struct usb_serial_port *port, unsigned int R,
309 unsigned int G, unsigned int B, u8 f)
310{
311 int status;
312 u8 *buf;
313 buf = kmalloc(8, GFP_KERNEL);
314 if (!buf)
315 return -ENOMEM;
316
317 buf[0] = IUU_SET_LED;
318 buf[1] = R & 0xFF;
319 buf[2] = (R >> 8) & 0xFF;
320 buf[3] = G & 0xFF;
321 buf[4] = (G >> 8) & 0xFF;
322 buf[5] = B & 0xFF;
323 buf[6] = (B >> 8) & 0xFF;
324 buf[7] = f;
325 status = bulk_immediate(port, buf, 8);
326 kfree(buf);
327 if (status != IUU_OPERATION_OK)
328 dev_dbg(&port->dev, "%s - led error status = %2x\n", __func__, status);
329 else
330 dev_dbg(&port->dev, "%s - led OK !\n", __func__);
331 return IUU_OPERATION_OK;
332}
333
334static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1,
335 u8 b2, u8 freq)
336{
337 *buf++ = IUU_SET_LED;
338 *buf++ = r1;
339 *buf++ = r2;
340 *buf++ = g1;
341 *buf++ = g2;
342 *buf++ = b1;
343 *buf++ = b2;
344 *buf = freq;
345}
346
347static void iuu_led_activity_on(struct urb *urb)
348{
349 struct usb_serial_port *port = urb->context;
350 char *buf_ptr = port->write_urb->transfer_buffer;
351
352 if (xmas) {
353 buf_ptr[0] = IUU_SET_LED;
354 get_random_bytes(buf_ptr + 1, 6);
355 buf_ptr[7] = 1;
356 } else {
357 iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255);
358 }
359
360 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
361 usb_sndbulkpipe(port->serial->dev,
362 port->bulk_out_endpointAddress),
363 port->write_urb->transfer_buffer, 8 ,
364 iuu_rxcmd, port);
365 usb_submit_urb(port->write_urb, GFP_ATOMIC);
366}
367
368static void iuu_led_activity_off(struct urb *urb)
369{
370 struct usb_serial_port *port = urb->context;
371 char *buf_ptr = port->write_urb->transfer_buffer;
372
373 if (xmas) {
374 iuu_rxcmd(urb);
375 return;
376 }
377
378 iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255);
379
380 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
381 usb_sndbulkpipe(port->serial->dev,
382 port->bulk_out_endpointAddress),
383 port->write_urb->transfer_buffer, 8 ,
384 iuu_rxcmd, port);
385 usb_submit_urb(port->write_urb, GFP_ATOMIC);
386}
387
388
389
390static int iuu_clk(struct usb_serial_port *port, int dwFrq)
391{
392 int status;
393 struct iuu_private *priv = usb_get_serial_port_data(port);
394 int Count = 0;
395 u8 FrqGenAdr = 0x69;
396 u8 DIV = 0; /* 8bit */
397 u8 XDRV = 0; /* 8bit */
398 u8 PUMP = 0; /* 3bit */
399 u8 PBmsb = 0; /* 2bit */
400 u8 PBlsb = 0; /* 8bit */
401 u8 PO = 0; /* 1bit */
402 u8 Q = 0; /* 7bit */
403 /* 24bit = 3bytes */
404 unsigned int P = 0;
405 unsigned int P2 = 0;
406 int frq = (int)dwFrq;
407
408 if (frq == 0) {
409 priv->buf[Count++] = IUU_UART_WRITE_I2C;
410 priv->buf[Count++] = FrqGenAdr << 1;
411 priv->buf[Count++] = 0x09;
412 priv->buf[Count++] = 0x00;
413
414 status = bulk_immediate(port, (u8 *) priv->buf, Count);
415 if (status != 0) {
416 dev_dbg(&port->dev, "%s - write error\n", __func__);
417 return status;
418 }
419 } else if (frq == 3579000) {
420 DIV = 100;
421 P = 1193;
422 Q = 40;
423 XDRV = 0;
424 } else if (frq == 3680000) {
425 DIV = 105;
426 P = 161;
427 Q = 5;
428 XDRV = 0;
429 } else if (frq == 6000000) {
430 DIV = 66;
431 P = 66;
432 Q = 2;
433 XDRV = 0x28;
434 } else {
435 unsigned int result = 0;
436 unsigned int tmp = 0;
437 unsigned int check;
438 unsigned int check2;
439 char found = 0x00;
440 unsigned int lQ = 2;
441 unsigned int lP = 2055;
442 unsigned int lDiv = 4;
443
444 for (lQ = 2; lQ <= 47 && !found; lQ++)
445 for (lP = 2055; lP >= 8 && !found; lP--)
446 for (lDiv = 4; lDiv <= 127 && !found; lDiv++) {
447 tmp = (12000000 / lDiv) * (lP / lQ);
448 if (abs((int)(tmp - frq)) <
449 abs((int)(frq - result))) {
450 check2 = (12000000 / lQ);
451 if (check2 < 250000)
452 continue;
453 check = (12000000 / lQ) * lP;
454 if (check > 400000000)
455 continue;
456 if (check < 100000000)
457 continue;
458 if (lDiv < 4 || lDiv > 127)
459 continue;
460 result = tmp;
461 P = lP;
462 DIV = lDiv;
463 Q = lQ;
464 if (result == frq)
465 found = 0x01;
466 }
467 }
468 }
469 P2 = ((P - PO) / 2) - 4;
470 PUMP = 0x04;
471 PBmsb = (P2 >> 8 & 0x03);
472 PBlsb = P2 & 0xFF;
473 PO = (P >> 10) & 0x01;
474 Q = Q - 2;
475
476 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
477 priv->buf[Count++] = FrqGenAdr << 1;
478 priv->buf[Count++] = 0x09;
479 priv->buf[Count++] = 0x20; /* Adr = 0x09 */
480 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
481 priv->buf[Count++] = FrqGenAdr << 1;
482 priv->buf[Count++] = 0x0C;
483 priv->buf[Count++] = DIV; /* Adr = 0x0C */
484 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
485 priv->buf[Count++] = FrqGenAdr << 1;
486 priv->buf[Count++] = 0x12;
487 priv->buf[Count++] = XDRV; /* Adr = 0x12 */
488 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
489 priv->buf[Count++] = FrqGenAdr << 1;
490 priv->buf[Count++] = 0x13;
491 priv->buf[Count++] = 0x6B; /* Adr = 0x13 */
492 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
493 priv->buf[Count++] = FrqGenAdr << 1;
494 priv->buf[Count++] = 0x40;
495 priv->buf[Count++] = (0xC0 | ((PUMP & 0x07) << 2)) |
496 (PBmsb & 0x03); /* Adr = 0x40 */
497 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
498 priv->buf[Count++] = FrqGenAdr << 1;
499 priv->buf[Count++] = 0x41;
500 priv->buf[Count++] = PBlsb; /* Adr = 0x41 */
501 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
502 priv->buf[Count++] = FrqGenAdr << 1;
503 priv->buf[Count++] = 0x42;
504 priv->buf[Count++] = Q | (((PO & 0x01) << 7)); /* Adr = 0x42 */
505 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
506 priv->buf[Count++] = FrqGenAdr << 1;
507 priv->buf[Count++] = 0x44;
508 priv->buf[Count++] = (char)0xFF; /* Adr = 0x44 */
509 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
510 priv->buf[Count++] = FrqGenAdr << 1;
511 priv->buf[Count++] = 0x45;
512 priv->buf[Count++] = (char)0xFE; /* Adr = 0x45 */
513 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
514 priv->buf[Count++] = FrqGenAdr << 1;
515 priv->buf[Count++] = 0x46;
516 priv->buf[Count++] = 0x7F; /* Adr = 0x46 */
517 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
518 priv->buf[Count++] = FrqGenAdr << 1;
519 priv->buf[Count++] = 0x47;
520 priv->buf[Count++] = (char)0x84; /* Adr = 0x47 */
521
522 status = bulk_immediate(port, (u8 *) priv->buf, Count);
523 if (status != IUU_OPERATION_OK)
524 dev_dbg(&port->dev, "%s - write error\n", __func__);
525 return status;
526}
527
528static int iuu_uart_flush(struct usb_serial_port *port)
529{
530 struct device *dev = &port->dev;
531 int i;
532 int status;
533 u8 *rxcmd;
534 struct iuu_private *priv = usb_get_serial_port_data(port);
535
536 if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0)
537 return -EIO;
538
539 rxcmd = kmalloc(1, GFP_KERNEL);
540 if (!rxcmd)
541 return -ENOMEM;
542
543 rxcmd[0] = IUU_UART_RX;
544
545 for (i = 0; i < 2; i++) {
546 status = bulk_immediate(port, rxcmd, 1);
547 if (status != IUU_OPERATION_OK) {
548 dev_dbg(dev, "%s - uart_flush_write error\n", __func__);
549 goto out_free;
550 }
551
552 status = read_immediate(port, &priv->len, 1);
553 if (status != IUU_OPERATION_OK) {
554 dev_dbg(dev, "%s - uart_flush_read error\n", __func__);
555 goto out_free;
556 }
557
558 if (priv->len > 0) {
559 dev_dbg(dev, "%s - uart_flush datalen is : %i\n", __func__, priv->len);
560 status = read_immediate(port, priv->buf, priv->len);
561 if (status != IUU_OPERATION_OK) {
562 dev_dbg(dev, "%s - uart_flush_read error\n", __func__);
563 goto out_free;
564 }
565 }
566 }
567 dev_dbg(dev, "%s - uart_flush_read OK!\n", __func__);
568 iuu_led(port, 0, 0xF000, 0, 0xFF);
569
570out_free:
571 kfree(rxcmd);
572
573 return status;
574}
575
576static void read_buf_callback(struct urb *urb)
577{
578 struct usb_serial_port *port = urb->context;
579 unsigned char *data = urb->transfer_buffer;
580 int status = urb->status;
581
582 if (status) {
583 if (status == -EPROTO) {
584 /* reschedule needed */
585 }
586 return;
587 }
588
589 dev_dbg(&port->dev, "%s - %i chars to write\n", __func__, urb->actual_length);
590
591 if (urb->actual_length) {
592 tty_insert_flip_string(&port->port, data, urb->actual_length);
593 tty_flip_buffer_push(&port->port);
594 }
595 iuu_led_activity_on(urb);
596}
597
598static int iuu_bulk_write(struct usb_serial_port *port)
599{
600 struct iuu_private *priv = usb_get_serial_port_data(port);
601 unsigned long flags;
602 int result;
603 int buf_len;
604 char *buf_ptr = port->write_urb->transfer_buffer;
605
606 spin_lock_irqsave(&priv->lock, flags);
607 *buf_ptr++ = IUU_UART_ESC;
608 *buf_ptr++ = IUU_UART_TX;
609 *buf_ptr++ = priv->writelen;
610
611 memcpy(buf_ptr, priv->writebuf, priv->writelen);
612 buf_len = priv->writelen;
613 priv->writelen = 0;
614 spin_unlock_irqrestore(&priv->lock, flags);
615 dev_dbg(&port->dev, "%s - writing %i chars : %*ph\n", __func__,
616 buf_len, buf_len, buf_ptr);
617 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
618 usb_sndbulkpipe(port->serial->dev,
619 port->bulk_out_endpointAddress),
620 port->write_urb->transfer_buffer, buf_len + 3,
621 iuu_rxcmd, port);
622 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
623 usb_serial_port_softint(port);
624 return result;
625}
626
627static int iuu_read_buf(struct usb_serial_port *port, int len)
628{
629 int result;
630
631 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
632 usb_rcvbulkpipe(port->serial->dev,
633 port->bulk_in_endpointAddress),
634 port->read_urb->transfer_buffer, len,
635 read_buf_callback, port);
636 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
637 return result;
638}
639
640static void iuu_uart_read_callback(struct urb *urb)
641{
642 struct usb_serial_port *port = urb->context;
643 struct iuu_private *priv = usb_get_serial_port_data(port);
644 unsigned long flags;
645 int status = urb->status;
646 int len = 0;
647 unsigned char *data = urb->transfer_buffer;
648 priv->poll++;
649
650 if (status) {
651 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
652 /* error stop all */
653 return;
654 }
655
656 if (urb->actual_length == 1)
657 len = (int) data[0];
658
659 if (urb->actual_length > 1) {
660 dev_dbg(&port->dev, "%s - urb->actual_length = %i\n", __func__,
661 urb->actual_length);
662 return;
663 }
664 /* if len > 0 call readbuf */
665
666 if (len > 0) {
667 dev_dbg(&port->dev, "%s - call read buf - len to read is %i\n",
668 __func__, len);
669 status = iuu_read_buf(port, len);
670 return;
671 }
672 /* need to update status ? */
673 if (priv->poll > 99) {
674 status = iuu_status(port);
675 priv->poll = 0;
676 return;
677 }
678
679 /* reset waiting ? */
680
681 if (priv->reset == 1) {
682 status = iuu_reset(port, 0xC);
683 return;
684 }
685 /* Writebuf is waiting */
686 spin_lock_irqsave(&priv->lock, flags);
687 if (priv->writelen > 0) {
688 spin_unlock_irqrestore(&priv->lock, flags);
689 status = iuu_bulk_write(port);
690 return;
691 }
692 spin_unlock_irqrestore(&priv->lock, flags);
693 /* if nothing to write call again rxcmd */
694 dev_dbg(&port->dev, "%s - rxcmd recall\n", __func__);
695 iuu_led_activity_off(urb);
696}
697
698static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port,
699 const u8 *buf, int count)
700{
701 struct iuu_private *priv = usb_get_serial_port_data(port);
702 unsigned long flags;
703
704 spin_lock_irqsave(&priv->lock, flags);
705
706 count = min(count, 256 - priv->writelen);
707 if (count == 0)
708 goto out;
709
710 /* fill the buffer */
711 memcpy(priv->writebuf + priv->writelen, buf, count);
712 priv->writelen += count;
713out:
714 spin_unlock_irqrestore(&priv->lock, flags);
715
716 return count;
717}
718
719static void read_rxcmd_callback(struct urb *urb)
720{
721 struct usb_serial_port *port = urb->context;
722 int result;
723 int status = urb->status;
724
725 if (status) {
726 /* error stop all */
727 return;
728 }
729
730 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
731 usb_rcvbulkpipe(port->serial->dev,
732 port->bulk_in_endpointAddress),
733 port->read_urb->transfer_buffer, 256,
734 iuu_uart_read_callback, port);
735 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
736 dev_dbg(&port->dev, "%s - submit result = %d\n", __func__, result);
737}
738
739static int iuu_uart_on(struct usb_serial_port *port)
740{
741 int status;
742 u8 *buf;
743
744 buf = kmalloc(4, GFP_KERNEL);
745
746 if (!buf)
747 return -ENOMEM;
748
749 buf[0] = IUU_UART_ENABLE;
750 buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF);
751 buf[2] = (u8) (0x00FF & IUU_BAUD_9600);
752 buf[3] = (u8) (0x0F0 & IUU_ONE_STOP_BIT) | (0x07 & IUU_PARITY_EVEN);
753
754 status = bulk_immediate(port, buf, 4);
755 if (status != IUU_OPERATION_OK) {
756 dev_dbg(&port->dev, "%s - uart_on error\n", __func__);
757 goto uart_enable_failed;
758 }
759 /* iuu_reset() the card after iuu_uart_on() */
760 status = iuu_uart_flush(port);
761 if (status != IUU_OPERATION_OK)
762 dev_dbg(&port->dev, "%s - uart_flush error\n", __func__);
763uart_enable_failed:
764 kfree(buf);
765 return status;
766}
767
768/* Disables the IUU UART (a.k.a. the Phoenix voiderface) */
769static int iuu_uart_off(struct usb_serial_port *port)
770{
771 int status;
772 u8 *buf;
773 buf = kmalloc(1, GFP_KERNEL);
774 if (!buf)
775 return -ENOMEM;
776 buf[0] = IUU_UART_DISABLE;
777
778 status = bulk_immediate(port, buf, 1);
779 if (status != IUU_OPERATION_OK)
780 dev_dbg(&port->dev, "%s - uart_off error\n", __func__);
781
782 kfree(buf);
783 return status;
784}
785
786static int iuu_uart_baud(struct usb_serial_port *port, u32 baud_base,
787 u32 *actual, u8 parity)
788{
789 int status;
790 u32 baud;
791 u8 *dataout;
792 u8 DataCount = 0;
793 u8 T1Frekvens = 0;
794 u8 T1reload = 0;
795 unsigned int T1FrekvensHZ = 0;
796
797 dev_dbg(&port->dev, "%s - enter baud_base=%d\n", __func__, baud_base);
798 dataout = kmalloc(5, GFP_KERNEL);
799
800 if (!dataout)
801 return -ENOMEM;
802 /*baud = (((priv->clk / 35) * baud_base) / 100000); */
803 baud = baud_base;
804
805 if (baud < 1200 || baud > 230400) {
806 kfree(dataout);
807 return IUU_INVALID_PARAMETER;
808 }
809 if (baud > 977) {
810 T1Frekvens = 3;
811 T1FrekvensHZ = 500000;
812 }
813
814 if (baud > 3906) {
815 T1Frekvens = 2;
816 T1FrekvensHZ = 2000000;
817 }
818
819 if (baud > 11718) {
820 T1Frekvens = 1;
821 T1FrekvensHZ = 6000000;
822 }
823
824 if (baud > 46875) {
825 T1Frekvens = 0;
826 T1FrekvensHZ = 24000000;
827 }
828
829 T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2));
830
831 /* magic number here: ENTER_FIRMWARE_UPDATE; */
832 dataout[DataCount++] = IUU_UART_ESC;
833 /* magic number here: CHANGE_BAUD; */
834 dataout[DataCount++] = IUU_UART_CHANGE;
835 dataout[DataCount++] = T1Frekvens;
836 dataout[DataCount++] = T1reload;
837
838 *actual = (T1FrekvensHZ / (256 - T1reload)) / 2;
839
840 switch (parity & 0x0F) {
841 case IUU_PARITY_NONE:
842 dataout[DataCount++] = 0x00;
843 break;
844 case IUU_PARITY_EVEN:
845 dataout[DataCount++] = 0x01;
846 break;
847 case IUU_PARITY_ODD:
848 dataout[DataCount++] = 0x02;
849 break;
850 case IUU_PARITY_MARK:
851 dataout[DataCount++] = 0x03;
852 break;
853 case IUU_PARITY_SPACE:
854 dataout[DataCount++] = 0x04;
855 break;
856 default:
857 kfree(dataout);
858 return IUU_INVALID_PARAMETER;
859 }
860
861 switch (parity & 0xF0) {
862 case IUU_ONE_STOP_BIT:
863 dataout[DataCount - 1] |= IUU_ONE_STOP_BIT;
864 break;
865
866 case IUU_TWO_STOP_BITS:
867 dataout[DataCount - 1] |= IUU_TWO_STOP_BITS;
868 break;
869 default:
870 kfree(dataout);
871 return IUU_INVALID_PARAMETER;
872 }
873
874 status = bulk_immediate(port, dataout, DataCount);
875 if (status != IUU_OPERATION_OK)
876 dev_dbg(&port->dev, "%s - uart_off error\n", __func__);
877 kfree(dataout);
878 return status;
879}
880
881static void iuu_set_termios(struct tty_struct *tty,
882 struct usb_serial_port *port,
883 const struct ktermios *old_termios)
884{
885 const u32 supported_mask = CMSPAR|PARENB|PARODD;
886 struct iuu_private *priv = usb_get_serial_port_data(port);
887 unsigned int cflag = tty->termios.c_cflag;
888 int status;
889 u32 actual;
890 u32 parity;
891 int csize = CS7;
892 int baud;
893 u32 newval = cflag & supported_mask;
894
895 /* Just use the ospeed. ispeed should be the same. */
896 baud = tty->termios.c_ospeed;
897
898 dev_dbg(&port->dev, "%s - enter c_ospeed or baud=%d\n", __func__, baud);
899
900 /* compute the parity parameter */
901 parity = 0;
902 if (cflag & CMSPAR) { /* Using mark space */
903 if (cflag & PARODD)
904 parity |= IUU_PARITY_SPACE;
905 else
906 parity |= IUU_PARITY_MARK;
907 } else if (!(cflag & PARENB)) {
908 parity |= IUU_PARITY_NONE;
909 csize = CS8;
910 } else if (cflag & PARODD)
911 parity |= IUU_PARITY_ODD;
912 else
913 parity |= IUU_PARITY_EVEN;
914
915 parity |= (cflag & CSTOPB ? IUU_TWO_STOP_BITS : IUU_ONE_STOP_BIT);
916
917 /* set it */
918 status = iuu_uart_baud(port,
919 baud * priv->boost / 100,
920 &actual, parity);
921
922 /* set the termios value to the real one, so the user now what has
923 * changed. We support few fields so its easies to copy the old hw
924 * settings back over and then adjust them
925 */
926 if (old_termios)
927 tty_termios_copy_hw(&tty->termios, old_termios);
928 if (status != 0) /* Set failed - return old bits */
929 return;
930 /* Re-encode speed, parity and csize */
931 tty_encode_baud_rate(tty, baud, baud);
932 tty->termios.c_cflag &= ~(supported_mask|CSIZE);
933 tty->termios.c_cflag |= newval | csize;
934}
935
936static void iuu_close(struct usb_serial_port *port)
937{
938 /* iuu_led (port,255,0,0,0); */
939
940 iuu_uart_off(port);
941
942 usb_kill_urb(port->write_urb);
943 usb_kill_urb(port->read_urb);
944
945 iuu_led(port, 0, 0, 0xF000, 0xFF);
946}
947
948static void iuu_init_termios(struct tty_struct *tty)
949{
950 tty->termios.c_cflag = B9600 | CS8 | CSTOPB | CREAD | PARENB | CLOCAL;
951 tty->termios.c_ispeed = 9600;
952 tty->termios.c_ospeed = 9600;
953 tty->termios.c_lflag = 0;
954 tty->termios.c_oflag = 0;
955 tty->termios.c_iflag = 0;
956}
957
958static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port)
959{
960 struct usb_serial *serial = port->serial;
961 struct device *dev = &port->dev;
962 int result;
963 int baud;
964 u32 actual;
965 struct iuu_private *priv = usb_get_serial_port_data(port);
966
967 baud = tty->termios.c_ospeed;
968
969 dev_dbg(dev, "%s - baud %d\n", __func__, baud);
970 usb_clear_halt(serial->dev, port->write_urb->pipe);
971 usb_clear_halt(serial->dev, port->read_urb->pipe);
972
973 priv->poll = 0;
974
975#define SOUP(a, b, c, d) do { \
976 result = usb_control_msg(port->serial->dev, \
977 usb_sndctrlpipe(port->serial->dev, 0), \
978 b, a, c, d, NULL, 0, 1000); \
979 dev_dbg(dev, "0x%x:0x%x:0x%x:0x%x %d\n", a, b, c, d, result); } while (0)
980
981 /* This is not UART related but IUU USB driver related or something */
982 /* like that. Basically no IUU will accept any commands from the USB */
983 /* host unless it has received the following message */
984 /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */
985
986 SOUP(0x03, 0x02, 0x02, 0x0);
987
988 iuu_led(port, 0xF000, 0xF000, 0, 0xFF);
989 iuu_uart_on(port);
990 if (boost < 100)
991 boost = 100;
992 priv->boost = boost;
993 switch (clockmode) {
994 case 2: /* 3.680 Mhz */
995 priv->clk = IUU_CLK_3680000;
996 iuu_clk(port, IUU_CLK_3680000 * boost / 100);
997 result =
998 iuu_uart_baud(port, baud * boost / 100, &actual,
999 IUU_PARITY_EVEN);
1000 break;
1001 case 3: /* 6.00 Mhz */
1002 iuu_clk(port, IUU_CLK_6000000 * boost / 100);
1003 priv->clk = IUU_CLK_6000000;
1004 /* Ratio of 6000000 to 3500000 for baud 9600 */
1005 result =
1006 iuu_uart_baud(port, 16457 * boost / 100, &actual,
1007 IUU_PARITY_EVEN);
1008 break;
1009 default: /* 3.579 Mhz */
1010 iuu_clk(port, IUU_CLK_3579000 * boost / 100);
1011 priv->clk = IUU_CLK_3579000;
1012 result =
1013 iuu_uart_baud(port, baud * boost / 100, &actual,
1014 IUU_PARITY_EVEN);
1015 }
1016
1017 /* set the cardin cardout signals */
1018 switch (cdmode) {
1019 case 0:
1020 iuu_cardin = 0;
1021 iuu_cardout = 0;
1022 break;
1023 case 1:
1024 iuu_cardin = TIOCM_CD;
1025 iuu_cardout = 0;
1026 break;
1027 case 2:
1028 iuu_cardin = 0;
1029 iuu_cardout = TIOCM_CD;
1030 break;
1031 case 3:
1032 iuu_cardin = TIOCM_DSR;
1033 iuu_cardout = 0;
1034 break;
1035 case 4:
1036 iuu_cardin = 0;
1037 iuu_cardout = TIOCM_DSR;
1038 break;
1039 case 5:
1040 iuu_cardin = TIOCM_CTS;
1041 iuu_cardout = 0;
1042 break;
1043 case 6:
1044 iuu_cardin = 0;
1045 iuu_cardout = TIOCM_CTS;
1046 break;
1047 case 7:
1048 iuu_cardin = TIOCM_RNG;
1049 iuu_cardout = 0;
1050 break;
1051 case 8:
1052 iuu_cardin = 0;
1053 iuu_cardout = TIOCM_RNG;
1054 }
1055
1056 iuu_uart_flush(port);
1057
1058 dev_dbg(dev, "%s - initialization done\n", __func__);
1059
1060 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
1061 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1062 usb_sndbulkpipe(port->serial->dev,
1063 port->bulk_out_endpointAddress),
1064 port->write_urb->transfer_buffer, 1,
1065 read_rxcmd_callback, port);
1066 result = usb_submit_urb(port->write_urb, GFP_KERNEL);
1067 if (result) {
1068 dev_err(dev, "%s - failed submitting read urb, error %d\n", __func__, result);
1069 iuu_close(port);
1070 } else {
1071 dev_dbg(dev, "%s - rxcmd OK\n", __func__);
1072 }
1073
1074 return result;
1075}
1076
1077/* how to change VCC */
1078static int iuu_vcc_set(struct usb_serial_port *port, unsigned int vcc)
1079{
1080 int status;
1081 u8 *buf;
1082
1083 buf = kmalloc(5, GFP_KERNEL);
1084 if (!buf)
1085 return -ENOMEM;
1086
1087 buf[0] = IUU_SET_VCC;
1088 buf[1] = vcc & 0xFF;
1089 buf[2] = (vcc >> 8) & 0xFF;
1090 buf[3] = (vcc >> 16) & 0xFF;
1091 buf[4] = (vcc >> 24) & 0xFF;
1092
1093 status = bulk_immediate(port, buf, 5);
1094 kfree(buf);
1095
1096 if (status != IUU_OPERATION_OK)
1097 dev_dbg(&port->dev, "%s - vcc error status = %2x\n", __func__, status);
1098 else
1099 dev_dbg(&port->dev, "%s - vcc OK !\n", __func__);
1100
1101 return status;
1102}
1103
1104/*
1105 * Sysfs Attributes
1106 */
1107
1108static ssize_t vcc_mode_show(struct device *dev,
1109 struct device_attribute *attr, char *buf)
1110{
1111 struct usb_serial_port *port = to_usb_serial_port(dev);
1112 struct iuu_private *priv = usb_get_serial_port_data(port);
1113
1114 return sprintf(buf, "%d\n", priv->vcc);
1115}
1116
1117static ssize_t vcc_mode_store(struct device *dev,
1118 struct device_attribute *attr, const char *buf, size_t count)
1119{
1120 struct usb_serial_port *port = to_usb_serial_port(dev);
1121 struct iuu_private *priv = usb_get_serial_port_data(port);
1122 unsigned long v;
1123
1124 if (kstrtoul(buf, 10, &v)) {
1125 dev_err(dev, "%s - vcc_mode: %s is not a unsigned long\n",
1126 __func__, buf);
1127 goto fail_store_vcc_mode;
1128 }
1129
1130 dev_dbg(dev, "%s: setting vcc_mode = %ld\n", __func__, v);
1131
1132 if ((v != 3) && (v != 5)) {
1133 dev_err(dev, "%s - vcc_mode %ld is invalid\n", __func__, v);
1134 } else {
1135 iuu_vcc_set(port, v);
1136 priv->vcc = v;
1137 }
1138fail_store_vcc_mode:
1139 return count;
1140}
1141static DEVICE_ATTR_RW(vcc_mode);
1142
1143static int iuu_create_sysfs_attrs(struct usb_serial_port *port)
1144{
1145 return device_create_file(&port->dev, &dev_attr_vcc_mode);
1146}
1147
1148static int iuu_remove_sysfs_attrs(struct usb_serial_port *port)
1149{
1150 device_remove_file(&port->dev, &dev_attr_vcc_mode);
1151 return 0;
1152}
1153
1154/*
1155 * End Sysfs Attributes
1156 */
1157
1158static struct usb_serial_driver iuu_device = {
1159 .driver = {
1160 .owner = THIS_MODULE,
1161 .name = "iuu_phoenix",
1162 },
1163 .id_table = id_table,
1164 .num_ports = 1,
1165 .num_bulk_in = 1,
1166 .num_bulk_out = 1,
1167 .bulk_in_size = 512,
1168 .bulk_out_size = 512,
1169 .open = iuu_open,
1170 .close = iuu_close,
1171 .write = iuu_uart_write,
1172 .read_bulk_callback = iuu_uart_read_callback,
1173 .tiocmget = iuu_tiocmget,
1174 .tiocmset = iuu_tiocmset,
1175 .set_termios = iuu_set_termios,
1176 .init_termios = iuu_init_termios,
1177 .port_probe = iuu_port_probe,
1178 .port_remove = iuu_port_remove,
1179};
1180
1181static struct usb_serial_driver * const serial_drivers[] = {
1182 &iuu_device, NULL
1183};
1184
1185module_usb_serial_driver(serial_drivers, id_table);
1186
1187MODULE_AUTHOR("Alain Degreffe eczema@ecze.com");
1188
1189MODULE_DESCRIPTION(DRIVER_DESC);
1190MODULE_LICENSE("GPL");
1191
1192module_param(xmas, bool, 0644);
1193MODULE_PARM_DESC(xmas, "Xmas colors enabled or not");
1194
1195module_param(boost, int, 0644);
1196MODULE_PARM_DESC(boost, "Card overclock boost (in percent 100-500)");
1197
1198module_param(clockmode, int, 0644);
1199MODULE_PARM_DESC(clockmode, "Card clock mode (1=3.579 MHz, 2=3.680 MHz, "
1200 "3=6 Mhz)");
1201
1202module_param(cdmode, int, 0644);
1203MODULE_PARM_DESC(cdmode, "Card detect mode (0=none, 1=CD, 2=!CD, 3=DSR, "
1204 "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING)");
1205
1206module_param(vcc_default, int, 0644);
1207MODULE_PARM_DESC(vcc_default, "Set default VCC (either 3 for 3.3V or 5 "
1208 "for 5V). Default to 5.");