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Merge git://www.linux-watchdog.org/linux-watchdog
[linux/fpc-iii.git] / drivers / usb / serial / iuu_phoenix.c
blob790673e5faa744de7da4dfcb38fa2ba11b418ea6
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 #define DRIVER_DESC "Infinity USB Unlimited Phoenix driver"
36
37 static const struct usb_device_id id_table[] = {
38 {USB_DEVICE(IUU_USB_VENDOR_ID, IUU_USB_PRODUCT_ID)},
39 {} /* Terminating entry */
40 };
41 MODULE_DEVICE_TABLE(usb, id_table);
42
43 /* turbo parameter */
44 static int boost = 100;
45 static int clockmode = 1;
46 static int cdmode = 1;
47 static int iuu_cardin;
48 static int iuu_cardout;
49 static bool xmas;
50 static int vcc_default = 5;
51
52 static int iuu_create_sysfs_attrs(struct usb_serial_port *port);
53 static int iuu_remove_sysfs_attrs(struct usb_serial_port *port);
54 static void read_rxcmd_callback(struct urb *urb);
55
56 struct iuu_private {
57 spinlock_t lock; /* store irq state */
58 u8 line_status;
59 int tiostatus; /* store IUART SIGNAL for tiocmget call */
60 u8 reset; /* if 1 reset is needed */
61 int poll; /* number of poll */
62 u8 *writebuf; /* buffer for writing to device */
63 int writelen; /* num of byte to write to device */
64 u8 *buf; /* used for initialize speed */
65 u8 len;
66 int vcc; /* vcc (either 3 or 5 V) */
67 u32 baud;
68 u32 boost;
69 u32 clk;
70 };
71
72 static int iuu_port_probe(struct usb_serial_port *port)
73 {
74 struct iuu_private *priv;
75 int ret;
76
77 priv = kzalloc(sizeof(struct iuu_private), GFP_KERNEL);
78 if (!priv)
79 return -ENOMEM;
80
81 priv->buf = kzalloc(256, GFP_KERNEL);
82 if (!priv->buf) {
83 kfree(priv);
84 return -ENOMEM;
85 }
86
87 priv->writebuf = kzalloc(256, GFP_KERNEL);
88 if (!priv->writebuf) {
89 kfree(priv->buf);
90 kfree(priv);
91 return -ENOMEM;
92 }
93
94 priv->vcc = vcc_default;
95 spin_lock_init(&priv->lock);
96
97 usb_set_serial_port_data(port, priv);
98
99 ret = iuu_create_sysfs_attrs(port);
100 if (ret) {
101 kfree(priv->writebuf);
102 kfree(priv->buf);
103 kfree(priv);
104 return ret;
105 }
106
107 return 0;
108 }
109
110 static int iuu_port_remove(struct usb_serial_port *port)
111 {
112 struct iuu_private *priv = usb_get_serial_port_data(port);
113
114 iuu_remove_sysfs_attrs(port);
115 kfree(priv->writebuf);
116 kfree(priv->buf);
117 kfree(priv);
118
119 return 0;
120 }
121
122 static int iuu_tiocmset(struct tty_struct *tty,
123 unsigned int set, unsigned int clear)
124 {
125 struct usb_serial_port *port = tty->driver_data;
126 struct iuu_private *priv = usb_get_serial_port_data(port);
127 unsigned long flags;
128
129 /* FIXME: locking on tiomstatus */
130 dev_dbg(&port->dev, "%s msg : SET = 0x%04x, CLEAR = 0x%04x\n",
131 __func__, set, clear);
132
133 spin_lock_irqsave(&priv->lock, flags);
134
135 if ((set & TIOCM_RTS) && !(priv->tiostatus == TIOCM_RTS)) {
136 dev_dbg(&port->dev, "%s TIOCMSET RESET called !!!\n", __func__);
137 priv->reset = 1;
138 }
139 if (set & TIOCM_RTS)
140 priv->tiostatus = TIOCM_RTS;
141
142 spin_unlock_irqrestore(&priv->lock, flags);
143 return 0;
144 }
145
146 /* This is used to provide a carrier detect mechanism
147 * When a card is present, the response is 0x00
148 * When no card , the reader respond with TIOCM_CD
149 * This is known as CD autodetect mechanism
150 */
151 static int iuu_tiocmget(struct tty_struct *tty)
152 {
153 struct usb_serial_port *port = tty->driver_data;
154 struct iuu_private *priv = usb_get_serial_port_data(port);
155 unsigned long flags;
156 int rc;
157
158 spin_lock_irqsave(&priv->lock, flags);
159 rc = priv->tiostatus;
160 spin_unlock_irqrestore(&priv->lock, flags);
161
162 return rc;
163 }
164
165 static void iuu_rxcmd(struct urb *urb)
166 {
167 struct usb_serial_port *port = urb->context;
168 int result;
169 int status = urb->status;
170
171 if (status) {
172 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
173 /* error stop all */
174 return;
175 }
176
177
178 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
179 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
180 usb_sndbulkpipe(port->serial->dev,
181 port->bulk_out_endpointAddress),
182 port->write_urb->transfer_buffer, 1,
183 read_rxcmd_callback, port);
184 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
185 }
186
187 static int iuu_reset(struct usb_serial_port *port, u8 wt)
188 {
189 struct iuu_private *priv = usb_get_serial_port_data(port);
190 int result;
191 char *buf_ptr = port->write_urb->transfer_buffer;
192
193 /* Prepare the reset sequence */
194
195 *buf_ptr++ = IUU_RST_SET;
196 *buf_ptr++ = IUU_DELAY_MS;
197 *buf_ptr++ = wt;
198 *buf_ptr = IUU_RST_CLEAR;
199
200 /* send the sequence */
201
202 usb_fill_bulk_urb(port->write_urb,
203 port->serial->dev,
204 usb_sndbulkpipe(port->serial->dev,
205 port->bulk_out_endpointAddress),
206 port->write_urb->transfer_buffer, 4, iuu_rxcmd, port);
207 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
208 priv->reset = 0;
209 return result;
210 }
211
212 /* Status Function
213 * Return value is
214 * 0x00 = no card
215 * 0x01 = smartcard
216 * 0x02 = sim card
217 */
218 static void iuu_update_status_callback(struct urb *urb)
219 {
220 struct usb_serial_port *port = urb->context;
221 struct iuu_private *priv = usb_get_serial_port_data(port);
222 u8 *st;
223 int status = urb->status;
224
225 if (status) {
226 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
227 /* error stop all */
228 return;
229 }
230
231 st = urb->transfer_buffer;
232 dev_dbg(&port->dev, "%s - enter\n", __func__);
233 if (urb->actual_length == 1) {
234 switch (st[0]) {
235 case 0x1:
236 priv->tiostatus = iuu_cardout;
237 break;
238 case 0x0:
239 priv->tiostatus = iuu_cardin;
240 break;
241 default:
242 priv->tiostatus = iuu_cardin;
243 }
244 }
245 iuu_rxcmd(urb);
246 }
247
248 static void iuu_status_callback(struct urb *urb)
249 {
250 struct usb_serial_port *port = urb->context;
251 int result;
252 int status = urb->status;
253
254 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
255 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
256 usb_rcvbulkpipe(port->serial->dev,
257 port->bulk_in_endpointAddress),
258 port->read_urb->transfer_buffer, 256,
259 iuu_update_status_callback, port);
260 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
261 }
262
263 static int iuu_status(struct usb_serial_port *port)
264 {
265 int result;
266
267 memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1);
268 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
269 usb_sndbulkpipe(port->serial->dev,
270 port->bulk_out_endpointAddress),
271 port->write_urb->transfer_buffer, 1,
272 iuu_status_callback, port);
273 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
274 return result;
275
276 }
277
278 static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
279 {
280 int status;
281 struct usb_serial *serial = port->serial;
282 int actual = 0;
283
284 /* send the data out the bulk port */
285
286 status =
287 usb_bulk_msg(serial->dev,
288 usb_sndbulkpipe(serial->dev,
289 port->bulk_out_endpointAddress), buf,
290 count, &actual, 1000);
291
292 if (status != IUU_OPERATION_OK)
293 dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status);
294 else
295 dev_dbg(&port->dev, "%s - write OK !\n", __func__);
296 return status;
297 }
298
299 static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
300 {
301 int status;
302 struct usb_serial *serial = port->serial;
303 int actual = 0;
304
305 /* send the data out the bulk port */
306 status =
307 usb_bulk_msg(serial->dev,
308 usb_rcvbulkpipe(serial->dev,
309 port->bulk_in_endpointAddress), buf,
310 count, &actual, 1000);
311
312 if (status != IUU_OPERATION_OK)
313 dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status);
314 else
315 dev_dbg(&port->dev, "%s - read OK !\n", __func__);
316 return status;
317 }
318
319 static int iuu_led(struct usb_serial_port *port, unsigned int R,
320 unsigned int G, unsigned int B, u8 f)
321 {
322 int status;
323 u8 *buf;
324 buf = kmalloc(8, GFP_KERNEL);
325 if (!buf)
326 return -ENOMEM;
327
328 buf[0] = IUU_SET_LED;
329 buf[1] = R & 0xFF;
330 buf[2] = (R >> 8) & 0xFF;
331 buf[3] = G & 0xFF;
332 buf[4] = (G >> 8) & 0xFF;
333 buf[5] = B & 0xFF;
334 buf[6] = (B >> 8) & 0xFF;
335 buf[7] = f;
336 status = bulk_immediate(port, buf, 8);
337 kfree(buf);
338 if (status != IUU_OPERATION_OK)
339 dev_dbg(&port->dev, "%s - led error status = %2x\n", __func__, status);
340 else
341 dev_dbg(&port->dev, "%s - led OK !\n", __func__);
342 return IUU_OPERATION_OK;
343 }
344
345 static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1,
346 u8 b2, u8 freq)
347 {
348 *buf++ = IUU_SET_LED;
349 *buf++ = r1;
350 *buf++ = r2;
351 *buf++ = g1;
352 *buf++ = g2;
353 *buf++ = b1;
354 *buf++ = b2;
355 *buf = freq;
356 }
357
358 static void iuu_led_activity_on(struct urb *urb)
359 {
360 struct usb_serial_port *port = urb->context;
361 int result;
362 char *buf_ptr = port->write_urb->transfer_buffer;
363 *buf_ptr++ = IUU_SET_LED;
364 if (xmas == 1) {
365 get_random_bytes(buf_ptr, 6);
366 *(buf_ptr+7) = 1;
367 } else {
368 iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255);
369 }
370
371 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
372 usb_sndbulkpipe(port->serial->dev,
373 port->bulk_out_endpointAddress),
374 port->write_urb->transfer_buffer, 8 ,
375 iuu_rxcmd, port);
376 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
377 }
378
379 static void iuu_led_activity_off(struct urb *urb)
380 {
381 struct usb_serial_port *port = urb->context;
382 int result;
383 char *buf_ptr = port->write_urb->transfer_buffer;
384 if (xmas == 1) {
385 iuu_rxcmd(urb);
386 return;
387 } else {
388 *buf_ptr++ = IUU_SET_LED;
389 iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255);
390 }
391 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
392 usb_sndbulkpipe(port->serial->dev,
393 port->bulk_out_endpointAddress),
394 port->write_urb->transfer_buffer, 8 ,
395 iuu_rxcmd, port);
396 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
397 }
398
399
400
401 static int iuu_clk(struct usb_serial_port *port, int dwFrq)
402 {
403 int status;
404 struct iuu_private *priv = usb_get_serial_port_data(port);
405 int Count = 0;
406 u8 FrqGenAdr = 0x69;
407 u8 DIV = 0; /* 8bit */
408 u8 XDRV = 0; /* 8bit */
409 u8 PUMP = 0; /* 3bit */
410 u8 PBmsb = 0; /* 2bit */
411 u8 PBlsb = 0; /* 8bit */
412 u8 PO = 0; /* 1bit */
413 u8 Q = 0; /* 7bit */
414 /* 24bit = 3bytes */
415 unsigned int P = 0;
416 unsigned int P2 = 0;
417 int frq = (int)dwFrq;
418
419 if (frq == 0) {
420 priv->buf[Count++] = IUU_UART_WRITE_I2C;
421 priv->buf[Count++] = FrqGenAdr << 1;
422 priv->buf[Count++] = 0x09;
423 priv->buf[Count++] = 0x00;
424
425 status = bulk_immediate(port, (u8 *) priv->buf, Count);
426 if (status != 0) {
427 dev_dbg(&port->dev, "%s - write error\n", __func__);
428 return status;
429 }
430 } else if (frq == 3579000) {
431 DIV = 100;
432 P = 1193;
433 Q = 40;
434 XDRV = 0;
435 } else if (frq == 3680000) {
436 DIV = 105;
437 P = 161;
438 Q = 5;
439 XDRV = 0;
440 } else if (frq == 6000000) {
441 DIV = 66;
442 P = 66;
443 Q = 2;
444 XDRV = 0x28;
445 } else {
446 unsigned int result = 0;
447 unsigned int tmp = 0;
448 unsigned int check;
449 unsigned int check2;
450 char found = 0x00;
451 unsigned int lQ = 2;
452 unsigned int lP = 2055;
453 unsigned int lDiv = 4;
454
455 for (lQ = 2; lQ <= 47 && !found; lQ++)
456 for (lP = 2055; lP >= 8 && !found; lP--)
457 for (lDiv = 4; lDiv <= 127 && !found; lDiv++) {
458 tmp = (12000000 / lDiv) * (lP / lQ);
459 if (abs((int)(tmp - frq)) <
460 abs((int)(frq - result))) {
461 check2 = (12000000 / lQ);
462 if (check2 < 250000)
463 continue;
464 check = (12000000 / lQ) * lP;
465 if (check > 400000000)
466 continue;
467 if (check < 100000000)
468 continue;
469 if (lDiv < 4 || lDiv > 127)
470 continue;
471 result = tmp;
472 P = lP;
473 DIV = lDiv;
474 Q = lQ;
475 if (result == frq)
476 found = 0x01;
477 }
478 }
479 }
480 P2 = ((P - PO) / 2) - 4;
481 DIV = DIV;
482 PUMP = 0x04;
483 PBmsb = (P2 >> 8 & 0x03);
484 PBlsb = P2 & 0xFF;
485 PO = (P >> 10) & 0x01;
486 Q = Q - 2;
487
488 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
489 priv->buf[Count++] = FrqGenAdr << 1;
490 priv->buf[Count++] = 0x09;
491 priv->buf[Count++] = 0x20; /* Adr = 0x09 */
492 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
493 priv->buf[Count++] = FrqGenAdr << 1;
494 priv->buf[Count++] = 0x0C;
495 priv->buf[Count++] = DIV; /* Adr = 0x0C */
496 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
497 priv->buf[Count++] = FrqGenAdr << 1;
498 priv->buf[Count++] = 0x12;
499 priv->buf[Count++] = XDRV; /* Adr = 0x12 */
500 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
501 priv->buf[Count++] = FrqGenAdr << 1;
502 priv->buf[Count++] = 0x13;
503 priv->buf[Count++] = 0x6B; /* Adr = 0x13 */
504 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
505 priv->buf[Count++] = FrqGenAdr << 1;
506 priv->buf[Count++] = 0x40;
507 priv->buf[Count++] = (0xC0 | ((PUMP & 0x07) << 2)) |
508 (PBmsb & 0x03); /* Adr = 0x40 */
509 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
510 priv->buf[Count++] = FrqGenAdr << 1;
511 priv->buf[Count++] = 0x41;
512 priv->buf[Count++] = PBlsb; /* Adr = 0x41 */
513 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
514 priv->buf[Count++] = FrqGenAdr << 1;
515 priv->buf[Count++] = 0x42;
516 priv->buf[Count++] = Q | (((PO & 0x01) << 7)); /* Adr = 0x42 */
517 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
518 priv->buf[Count++] = FrqGenAdr << 1;
519 priv->buf[Count++] = 0x44;
520 priv->buf[Count++] = (char)0xFF; /* Adr = 0x44 */
521 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
522 priv->buf[Count++] = FrqGenAdr << 1;
523 priv->buf[Count++] = 0x45;
524 priv->buf[Count++] = (char)0xFE; /* Adr = 0x45 */
525 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
526 priv->buf[Count++] = FrqGenAdr << 1;
527 priv->buf[Count++] = 0x46;
528 priv->buf[Count++] = 0x7F; /* Adr = 0x46 */
529 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
530 priv->buf[Count++] = FrqGenAdr << 1;
531 priv->buf[Count++] = 0x47;
532 priv->buf[Count++] = (char)0x84; /* Adr = 0x47 */
533
534 status = bulk_immediate(port, (u8 *) priv->buf, Count);
535 if (status != IUU_OPERATION_OK)
536 dev_dbg(&port->dev, "%s - write error\n", __func__);
537 return status;
538 }
539
540 static int iuu_uart_flush(struct usb_serial_port *port)
541 {
542 struct device *dev = &port->dev;
543 int i;
544 int status;
545 u8 rxcmd = IUU_UART_RX;
546 struct iuu_private *priv = usb_get_serial_port_data(port);
547
548 if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0)
549 return -EIO;
550
551 for (i = 0; i < 2; i++) {
552 status = bulk_immediate(port, &rxcmd, 1);
553 if (status != IUU_OPERATION_OK) {
554 dev_dbg(dev, "%s - uart_flush_write error\n", __func__);
555 return status;
556 }
557
558 status = read_immediate(port, &priv->len, 1);
559 if (status != IUU_OPERATION_OK) {
560 dev_dbg(dev, "%s - uart_flush_read error\n", __func__);
561 return status;
562 }
563
564 if (priv->len > 0) {
565 dev_dbg(dev, "%s - uart_flush datalen is : %i\n", __func__, priv->len);
566 status = read_immediate(port, priv->buf, priv->len);
567 if (status != IUU_OPERATION_OK) {
568 dev_dbg(dev, "%s - uart_flush_read error\n", __func__);
569 return status;
570 }
571 }
572 }
573 dev_dbg(dev, "%s - uart_flush_read OK!\n", __func__);
574 iuu_led(port, 0, 0xF000, 0, 0xFF);
575 return status;
576 }
577
578 static void read_buf_callback(struct urb *urb)
579 {
580 struct usb_serial_port *port = urb->context;
581 unsigned char *data = urb->transfer_buffer;
582 int status = urb->status;
583
584 if (status) {
585 if (status == -EPROTO) {
586 /* reschedule needed */
587 }
588 return;
589 }
590
591 dev_dbg(&port->dev, "%s - %i chars to write\n", __func__, urb->actual_length);
592 if (data == NULL)
593 dev_dbg(&port->dev, "%s - data is NULL !!!\n", __func__);
594 if (urb->actual_length && data) {
595 tty_insert_flip_string(&port->port, data, urb->actual_length);
596 tty_flip_buffer_push(&port->port);
597 }
598 iuu_led_activity_on(urb);
599 }
600
601 static int iuu_bulk_write(struct usb_serial_port *port)
602 {
603 struct iuu_private *priv = usb_get_serial_port_data(port);
604 unsigned long flags;
605 int result;
606 int buf_len;
607 char *buf_ptr = port->write_urb->transfer_buffer;
608
609 spin_lock_irqsave(&priv->lock, flags);
610 *buf_ptr++ = IUU_UART_ESC;
611 *buf_ptr++ = IUU_UART_TX;
612 *buf_ptr++ = priv->writelen;
613
614 memcpy(buf_ptr, priv->writebuf, priv->writelen);
615 buf_len = priv->writelen;
616 priv->writelen = 0;
617 spin_unlock_irqrestore(&priv->lock, flags);
618 dev_dbg(&port->dev, "%s - writing %i chars : %*ph\n", __func__,
619 buf_len, buf_len, buf_ptr);
620 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
621 usb_sndbulkpipe(port->serial->dev,
622 port->bulk_out_endpointAddress),
623 port->write_urb->transfer_buffer, buf_len + 3,
624 iuu_rxcmd, port);
625 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
626 usb_serial_port_softint(port);
627 return result;
628 }
629
630 static int iuu_read_buf(struct usb_serial_port *port, int len)
631 {
632 int result;
633
634 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
635 usb_rcvbulkpipe(port->serial->dev,
636 port->bulk_in_endpointAddress),
637 port->read_urb->transfer_buffer, len,
638 read_buf_callback, port);
639 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
640 return result;
641 }
642
643 static void iuu_uart_read_callback(struct urb *urb)
644 {
645 struct usb_serial_port *port = urb->context;
646 struct iuu_private *priv = usb_get_serial_port_data(port);
647 unsigned long flags;
648 int status = urb->status;
649 int error = 0;
650 int len = 0;
651 unsigned char *data = urb->transfer_buffer;
652 priv->poll++;
653
654 if (status) {
655 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
656 /* error stop all */
657 return;
658 }
659 if (data == NULL)
660 dev_dbg(&port->dev, "%s - data is NULL !!!\n", __func__);
661
662 if (urb->actual_length == 1 && data != NULL)
663 len = (int) data[0];
664
665 if (urb->actual_length > 1) {
666 dev_dbg(&port->dev, "%s - urb->actual_length = %i\n", __func__,
667 urb->actual_length);
668 error = 1;
669 return;
670 }
671 /* if len > 0 call readbuf */
672
673 if (len > 0 && error == 0) {
674 dev_dbg(&port->dev, "%s - call read buf - len to read is %i\n",
675 __func__, len);
676 status = iuu_read_buf(port, len);
677 return;
678 }
679 /* need to update status ? */
680 if (priv->poll > 99) {
681 status = iuu_status(port);
682 priv->poll = 0;
683 return;
684 }
685
686 /* reset waiting ? */
687
688 if (priv->reset == 1) {
689 status = iuu_reset(port, 0xC);
690 return;
691 }
692 /* Writebuf is waiting */
693 spin_lock_irqsave(&priv->lock, flags);
694 if (priv->writelen > 0) {
695 spin_unlock_irqrestore(&priv->lock, flags);
696 status = iuu_bulk_write(port);
697 return;
698 }
699 spin_unlock_irqrestore(&priv->lock, flags);
700 /* if nothing to write call again rxcmd */
701 dev_dbg(&port->dev, "%s - rxcmd recall\n", __func__);
702 iuu_led_activity_off(urb);
703 }
704
705 static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port,
706 const u8 *buf, int count)
707 {
708 struct iuu_private *priv = usb_get_serial_port_data(port);
709 unsigned long flags;
710
711 if (count > 256)
712 return -ENOMEM;
713
714 spin_lock_irqsave(&priv->lock, flags);
715
716 /* fill the buffer */
717 memcpy(priv->writebuf + priv->writelen, buf, count);
718 priv->writelen += count;
719 spin_unlock_irqrestore(&priv->lock, flags);
720
721 return count;
722 }
723
724 static void read_rxcmd_callback(struct urb *urb)
725 {
726 struct usb_serial_port *port = urb->context;
727 int result;
728 int status = urb->status;
729
730 if (status) {
731 /* error stop all */
732 return;
733 }
734
735 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
736 usb_rcvbulkpipe(port->serial->dev,
737 port->bulk_in_endpointAddress),
738 port->read_urb->transfer_buffer, 256,
739 iuu_uart_read_callback, port);
740 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
741 dev_dbg(&port->dev, "%s - submit result = %d\n", __func__, result);
742 }
743
744 static int iuu_uart_on(struct usb_serial_port *port)
745 {
746 int status;
747 u8 *buf;
748
749 buf = kmalloc(sizeof(u8) * 4, GFP_KERNEL);
750
751 if (!buf)
752 return -ENOMEM;
753
754 buf[0] = IUU_UART_ENABLE;
755 buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF);
756 buf[2] = (u8) (0x00FF & IUU_BAUD_9600);
757 buf[3] = (u8) (0x0F0 & IUU_ONE_STOP_BIT) | (0x07 & IUU_PARITY_EVEN);
758
759 status = bulk_immediate(port, buf, 4);
760 if (status != IUU_OPERATION_OK) {
761 dev_dbg(&port->dev, "%s - uart_on error\n", __func__);
762 goto uart_enable_failed;
763 }
764 /* iuu_reset() the card after iuu_uart_on() */
765 status = iuu_uart_flush(port);
766 if (status != IUU_OPERATION_OK)
767 dev_dbg(&port->dev, "%s - uart_flush error\n", __func__);
768 uart_enable_failed:
769 kfree(buf);
770 return status;
771 }
772
773 /* Diables the IUU UART (a.k.a. the Phoenix voiderface) */
774 static int iuu_uart_off(struct usb_serial_port *port)
775 {
776 int status;
777 u8 *buf;
778 buf = kmalloc(1, GFP_KERNEL);
779 if (!buf)
780 return -ENOMEM;
781 buf[0] = IUU_UART_DISABLE;
782
783 status = bulk_immediate(port, buf, 1);
784 if (status != IUU_OPERATION_OK)
785 dev_dbg(&port->dev, "%s - uart_off error\n", __func__);
786
787 kfree(buf);
788 return status;
789 }
790
791 static int iuu_uart_baud(struct usb_serial_port *port, u32 baud_base,
792 u32 *actual, u8 parity)
793 {
794 int status;
795 u32 baud;
796 u8 *dataout;
797 u8 DataCount = 0;
798 u8 T1Frekvens = 0;
799 u8 T1reload = 0;
800 unsigned int T1FrekvensHZ = 0;
801
802 dev_dbg(&port->dev, "%s - enter baud_base=%d\n", __func__, baud_base);
803 dataout = kmalloc(sizeof(u8) * 5, GFP_KERNEL);
804
805 if (!dataout)
806 return -ENOMEM;
807 /*baud = (((priv->clk / 35) * baud_base) / 100000); */
808 baud = baud_base;
809
810 if (baud < 1200 || baud > 230400) {
811 kfree(dataout);
812 return IUU_INVALID_PARAMETER;
813 }
814 if (baud > 977) {
815 T1Frekvens = 3;
816 T1FrekvensHZ = 500000;
817 }
818
819 if (baud > 3906) {
820 T1Frekvens = 2;
821 T1FrekvensHZ = 2000000;
822 }
823
824 if (baud > 11718) {
825 T1Frekvens = 1;
826 T1FrekvensHZ = 6000000;
827 }
828
829 if (baud > 46875) {
830 T1Frekvens = 0;
831 T1FrekvensHZ = 24000000;
832 }
833
834 T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2));
835
836 /* magic number here: ENTER_FIRMWARE_UPDATE; */
837 dataout[DataCount++] = IUU_UART_ESC;
838 /* magic number here: CHANGE_BAUD; */
839 dataout[DataCount++] = IUU_UART_CHANGE;
840 dataout[DataCount++] = T1Frekvens;
841 dataout[DataCount++] = T1reload;
842
843 *actual = (T1FrekvensHZ / (256 - T1reload)) / 2;
844
845 switch (parity & 0x0F) {
846 case IUU_PARITY_NONE:
847 dataout[DataCount++] = 0x00;
848 break;
849 case IUU_PARITY_EVEN:
850 dataout[DataCount++] = 0x01;
851 break;
852 case IUU_PARITY_ODD:
853 dataout[DataCount++] = 0x02;
854 break;
855 case IUU_PARITY_MARK:
856 dataout[DataCount++] = 0x03;
857 break;
858 case IUU_PARITY_SPACE:
859 dataout[DataCount++] = 0x04;
860 break;
861 default:
862 kfree(dataout);
863 return IUU_INVALID_PARAMETER;
864 break;
865 }
866
867 switch (parity & 0xF0) {
868 case IUU_ONE_STOP_BIT:
869 dataout[DataCount - 1] |= IUU_ONE_STOP_BIT;
870 break;
871
872 case IUU_TWO_STOP_BITS:
873 dataout[DataCount - 1] |= IUU_TWO_STOP_BITS;
874 break;
875 default:
876 kfree(dataout);
877 return IUU_INVALID_PARAMETER;
878 break;
879 }
880
881 status = bulk_immediate(port, dataout, DataCount);
882 if (status != IUU_OPERATION_OK)
883 dev_dbg(&port->dev, "%s - uart_off error\n", __func__);
884 kfree(dataout);
885 return status;
886 }
887
888 static void iuu_set_termios(struct tty_struct *tty,
889 struct usb_serial_port *port, struct ktermios *old_termios)
890 {
891 const u32 supported_mask = CMSPAR|PARENB|PARODD;
892 struct iuu_private *priv = usb_get_serial_port_data(port);
893 unsigned int cflag = tty->termios.c_cflag;
894 int status;
895 u32 actual;
896 u32 parity;
897 int csize = CS7;
898 int baud;
899 u32 newval = cflag & supported_mask;
900
901 /* Just use the ospeed. ispeed should be the same. */
902 baud = tty->termios.c_ospeed;
903
904 dev_dbg(&port->dev, "%s - enter c_ospeed or baud=%d\n", __func__, baud);
905
906 /* compute the parity parameter */
907 parity = 0;
908 if (cflag & CMSPAR) { /* Using mark space */
909 if (cflag & PARODD)
910 parity |= IUU_PARITY_SPACE;
911 else
912 parity |= IUU_PARITY_MARK;
913 } else if (!(cflag & PARENB)) {
914 parity |= IUU_PARITY_NONE;
915 csize = CS8;
916 } else if (cflag & PARODD)
917 parity |= IUU_PARITY_ODD;
918 else
919 parity |= IUU_PARITY_EVEN;
920
921 parity |= (cflag & CSTOPB ? IUU_TWO_STOP_BITS : IUU_ONE_STOP_BIT);
922
923 /* set it */
924 status = iuu_uart_baud(port,
925 baud * priv->boost / 100,
926 &actual, parity);
927
928 /* set the termios value to the real one, so the user now what has
929 * changed. We support few fields so its easies to copy the old hw
930 * settings back over and then adjust them
931 */
932 if (old_termios)
933 tty_termios_copy_hw(&tty->termios, old_termios);
934 if (status != 0) /* Set failed - return old bits */
935 return;
936 /* Re-encode speed, parity and csize */
937 tty_encode_baud_rate(tty, baud, baud);
938 tty->termios.c_cflag &= ~(supported_mask|CSIZE);
939 tty->termios.c_cflag |= newval | csize;
940 }
941
942 static void iuu_close(struct usb_serial_port *port)
943 {
944 /* iuu_led (port,255,0,0,0); */
945
946 iuu_uart_off(port);
947
948 usb_kill_urb(port->write_urb);
949 usb_kill_urb(port->read_urb);
950
951 iuu_led(port, 0, 0, 0xF000, 0xFF);
952 }
953
954 static void iuu_init_termios(struct tty_struct *tty)
955 {
956 tty->termios = tty_std_termios;
957 tty->termios.c_cflag = CLOCAL | CREAD | CS8 | B9600
958 | TIOCM_CTS | CSTOPB | PARENB;
959 tty->termios.c_ispeed = 9600;
960 tty->termios.c_ospeed = 9600;
961 tty->termios.c_lflag = 0;
962 tty->termios.c_oflag = 0;
963 tty->termios.c_iflag = 0;
964 }
965
966 static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port)
967 {
968 struct usb_serial *serial = port->serial;
969 struct device *dev = &port->dev;
970 u8 *buf;
971 int result;
972 int baud;
973 u32 actual;
974 struct iuu_private *priv = usb_get_serial_port_data(port);
975
976 baud = tty->termios.c_ospeed;
977 tty->termios.c_ispeed = baud;
978 /* Re-encode speed */
979 tty_encode_baud_rate(tty, baud, baud);
980
981 dev_dbg(dev, "%s - baud %d\n", __func__, baud);
982 usb_clear_halt(serial->dev, port->write_urb->pipe);
983 usb_clear_halt(serial->dev, port->read_urb->pipe);
984
985 buf = kmalloc(10, GFP_KERNEL);
986 if (buf == NULL)
987 return -ENOMEM;
988
989 priv->poll = 0;
990
991 /* initialize writebuf */
992 #define FISH(a, b, c, d) do { \
993 result = usb_control_msg(port->serial->dev, \
994 usb_rcvctrlpipe(port->serial->dev, 0), \
995 b, a, c, d, buf, 1, 1000); \
996 dev_dbg(dev, "0x%x:0x%x:0x%x:0x%x %d - %x\n", a, b, c, d, result, \
997 buf[0]); } while (0);
998
999 #define SOUP(a, b, c, d) do { \
1000 result = usb_control_msg(port->serial->dev, \
1001 usb_sndctrlpipe(port->serial->dev, 0), \
1002 b, a, c, d, NULL, 0, 1000); \
1003 dev_dbg(dev, "0x%x:0x%x:0x%x:0x%x %d\n", a, b, c, d, result); } while (0)
1004
1005 /* This is not UART related but IUU USB driver related or something */
1006 /* like that. Basically no IUU will accept any commands from the USB */
1007 /* host unless it has received the following message */
1008 /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */
1009
1010 SOUP(0x03, 0x02, 0x02, 0x0);
1011 kfree(buf);
1012 iuu_led(port, 0xF000, 0xF000, 0, 0xFF);
1013 iuu_uart_on(port);
1014 if (boost < 100)
1015 boost = 100;
1016 priv->boost = boost;
1017 priv->baud = baud;
1018 switch (clockmode) {
1019 case 2: /* 3.680 Mhz */
1020 priv->clk = IUU_CLK_3680000;
1021 iuu_clk(port, IUU_CLK_3680000 * boost / 100);
1022 result =
1023 iuu_uart_baud(port, baud * boost / 100, &actual,
1024 IUU_PARITY_EVEN);
1025 break;
1026 case 3: /* 6.00 Mhz */
1027 iuu_clk(port, IUU_CLK_6000000 * boost / 100);
1028 priv->clk = IUU_CLK_6000000;
1029 /* Ratio of 6000000 to 3500000 for baud 9600 */
1030 result =
1031 iuu_uart_baud(port, 16457 * boost / 100, &actual,
1032 IUU_PARITY_EVEN);
1033 break;
1034 default: /* 3.579 Mhz */
1035 iuu_clk(port, IUU_CLK_3579000 * boost / 100);
1036 priv->clk = IUU_CLK_3579000;
1037 result =
1038 iuu_uart_baud(port, baud * boost / 100, &actual,
1039 IUU_PARITY_EVEN);
1040 }
1041
1042 /* set the cardin cardout signals */
1043 switch (cdmode) {
1044 case 0:
1045 iuu_cardin = 0;
1046 iuu_cardout = 0;
1047 break;
1048 case 1:
1049 iuu_cardin = TIOCM_CD;
1050 iuu_cardout = 0;
1051 break;
1052 case 2:
1053 iuu_cardin = 0;
1054 iuu_cardout = TIOCM_CD;
1055 break;
1056 case 3:
1057 iuu_cardin = TIOCM_DSR;
1058 iuu_cardout = 0;
1059 break;
1060 case 4:
1061 iuu_cardin = 0;
1062 iuu_cardout = TIOCM_DSR;
1063 break;
1064 case 5:
1065 iuu_cardin = TIOCM_CTS;
1066 iuu_cardout = 0;
1067 break;
1068 case 6:
1069 iuu_cardin = 0;
1070 iuu_cardout = TIOCM_CTS;
1071 break;
1072 case 7:
1073 iuu_cardin = TIOCM_RNG;
1074 iuu_cardout = 0;
1075 break;
1076 case 8:
1077 iuu_cardin = 0;
1078 iuu_cardout = TIOCM_RNG;
1079 }
1080
1081 iuu_uart_flush(port);
1082
1083 dev_dbg(dev, "%s - initialization done\n", __func__);
1084
1085 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
1086 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1087 usb_sndbulkpipe(port->serial->dev,
1088 port->bulk_out_endpointAddress),
1089 port->write_urb->transfer_buffer, 1,
1090 read_rxcmd_callback, port);
1091 result = usb_submit_urb(port->write_urb, GFP_KERNEL);
1092 if (result) {
1093 dev_err(dev, "%s - failed submitting read urb, error %d\n", __func__, result);
1094 iuu_close(port);
1095 } else {
1096 dev_dbg(dev, "%s - rxcmd OK\n", __func__);
1097 }
1098
1099 return result;
1100 }
1101
1102 /* how to change VCC */
1103 static int iuu_vcc_set(struct usb_serial_port *port, unsigned int vcc)
1104 {
1105 int status;
1106 u8 *buf;
1107
1108 buf = kmalloc(5, GFP_KERNEL);
1109 if (!buf)
1110 return -ENOMEM;
1111
1112 buf[0] = IUU_SET_VCC;
1113 buf[1] = vcc & 0xFF;
1114 buf[2] = (vcc >> 8) & 0xFF;
1115 buf[3] = (vcc >> 16) & 0xFF;
1116 buf[4] = (vcc >> 24) & 0xFF;
1117
1118 status = bulk_immediate(port, buf, 5);
1119 kfree(buf);
1120
1121 if (status != IUU_OPERATION_OK)
1122 dev_dbg(&port->dev, "%s - vcc error status = %2x\n", __func__, status);
1123 else
1124 dev_dbg(&port->dev, "%s - vcc OK !\n", __func__);
1125
1126 return status;
1127 }
1128
1129 /*
1130 * Sysfs Attributes
1131 */
1132
1133 static ssize_t show_vcc_mode(struct device *dev,
1134 struct device_attribute *attr, char *buf)
1135 {
1136 struct usb_serial_port *port = to_usb_serial_port(dev);
1137 struct iuu_private *priv = usb_get_serial_port_data(port);
1138
1139 return sprintf(buf, "%d\n", priv->vcc);
1140 }
1141
1142 static ssize_t store_vcc_mode(struct device *dev,
1143 struct device_attribute *attr, const char *buf, size_t count)
1144 {
1145 struct usb_serial_port *port = to_usb_serial_port(dev);
1146 struct iuu_private *priv = usb_get_serial_port_data(port);
1147 unsigned long v;
1148
1149 if (kstrtoul(buf, 10, &v)) {
1150 dev_err(dev, "%s - vcc_mode: %s is not a unsigned long\n",
1151 __func__, buf);
1152 goto fail_store_vcc_mode;
1153 }
1154
1155 dev_dbg(dev, "%s: setting vcc_mode = %ld", __func__, v);
1156
1157 if ((v != 3) && (v != 5)) {
1158 dev_err(dev, "%s - vcc_mode %ld is invalid\n", __func__, v);
1159 } else {
1160 iuu_vcc_set(port, v);
1161 priv->vcc = v;
1162 }
1163 fail_store_vcc_mode:
1164 return count;
1165 }
1166
1167 static DEVICE_ATTR(vcc_mode, S_IRUSR | S_IWUSR, show_vcc_mode,
1168 store_vcc_mode);
1169
1170 static int iuu_create_sysfs_attrs(struct usb_serial_port *port)
1171 {
1172 return device_create_file(&port->dev, &dev_attr_vcc_mode);
1173 }
1174
1175 static int iuu_remove_sysfs_attrs(struct usb_serial_port *port)
1176 {
1177 device_remove_file(&port->dev, &dev_attr_vcc_mode);
1178 return 0;
1179 }
1180
1181 /*
1182 * End Sysfs Attributes
1183 */
1184
1185 static struct usb_serial_driver iuu_device = {
1186 .driver = {
1187 .owner = THIS_MODULE,
1188 .name = "iuu_phoenix",
1189 },
1190 .id_table = id_table,
1191 .num_ports = 1,
1192 .bulk_in_size = 512,
1193 .bulk_out_size = 512,
1194 .open = iuu_open,
1195 .close = iuu_close,
1196 .write = iuu_uart_write,
1197 .read_bulk_callback = iuu_uart_read_callback,
1198 .tiocmget = iuu_tiocmget,
1199 .tiocmset = iuu_tiocmset,
1200 .set_termios = iuu_set_termios,
1201 .init_termios = iuu_init_termios,
1202 .port_probe = iuu_port_probe,
1203 .port_remove = iuu_port_remove,
1204 };
1205
1206 static struct usb_serial_driver * const serial_drivers[] = {
1207 &iuu_device, NULL
1208 };
1209
1210 module_usb_serial_driver(serial_drivers, id_table);
1211
1212 MODULE_AUTHOR("Alain Degreffe eczema@ecze.com");
1213
1214 MODULE_DESCRIPTION(DRIVER_DESC);
1215 MODULE_LICENSE("GPL");
1216
1217 module_param(xmas, bool, S_IRUGO | S_IWUSR);
1218 MODULE_PARM_DESC(xmas, "Xmas colors enabled or not");
1219
1220 module_param(boost, int, S_IRUGO | S_IWUSR);
1221 MODULE_PARM_DESC(boost, "Card overclock boost (in percent 100-500)");
1222
1223 module_param(clockmode, int, S_IRUGO | S_IWUSR);
1224 MODULE_PARM_DESC(clockmode, "Card clock mode (1=3.579 MHz, 2=3.680 MHz, "
1225 "3=6 Mhz)");
1226
1227 module_param(cdmode, int, S_IRUGO | S_IWUSR);
1228 MODULE_PARM_DESC(cdmode, "Card detect mode (0=none, 1=CD, 2=!CD, 3=DSR, "
1229 "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING)");
1230
1231 module_param(vcc_default, int, S_IRUGO | S_IWUSR);
1232 MODULE_PARM_DESC(vcc_default, "Set default VCC (either 3 for 3.3V or 5 "
1233 "for 5V). Default to 5.");
Linux with added FPC-III support