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