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Merge branch 'for-2.6.28' of git://linux-nfs.org/~bfields/linux
[deliverable/linux.git] / drivers / usb / serial / iuu_phoenix.c
1 /*
2 * Infinity Unlimited USB Phoenix driver
3 *
4 * Copyright (C) 2007 Alain Degreffe (eczema@ecze.com)
5 *
6 * Original code taken from iuutool (Copyright (C) 2006 Juan Carlos Borrás)
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * And tested with help of WB Electronics
14 *
15 */
16 #include <linux/kernel.h>
17 #include <linux/errno.h>
18 #include <linux/init.h>
19 #include <linux/slab.h>
20 #include <linux/tty.h>
21 #include <linux/tty_driver.h>
22 #include <linux/tty_flip.h>
23 #include <linux/serial.h>
24 #include <linux/module.h>
25 #include <linux/moduleparam.h>
26 #include <linux/spinlock.h>
27 #include <linux/uaccess.h>
28 #include <linux/usb.h>
29 #include <linux/usb/serial.h>
30 #include "iuu_phoenix.h"
31 #include <linux/random.h>
32
33
34 #ifdef CONFIG_USB_SERIAL_DEBUG
35 static int debug = 1;
36 #else
37 static int debug;
38 #endif
39
40 /*
41 * Version Information
42 */
43 #define DRIVER_VERSION "v0.5"
44 #define DRIVER_DESC "Infinity USB Unlimited Phoenix driver"
45
46 static struct usb_device_id id_table[] = {
47 {USB_DEVICE(IUU_USB_VENDOR_ID, IUU_USB_PRODUCT_ID)},
48 {} /* Terminating entry */
49 };
50 MODULE_DEVICE_TABLE(usb, id_table);
51
52 static struct usb_driver iuu_driver = {
53 .name = "iuu_phoenix",
54 .probe = usb_serial_probe,
55 .disconnect = usb_serial_disconnect,
56 .id_table = id_table,
57 .no_dynamic_id = 1,
58 };
59
60 /* turbo parameter */
61 static int boost = 100;
62 static int clockmode = 1;
63 static int cdmode = 1;
64 static int iuu_cardin;
65 static int iuu_cardout;
66 static int xmas;
67
68 static void read_rxcmd_callback(struct urb *urb);
69
70 struct iuu_private {
71 spinlock_t lock; /* store irq state */
72 wait_queue_head_t delta_msr_wait;
73 u8 line_control;
74 u8 line_status;
75 u8 termios_initialized;
76 int tiostatus; /* store IUART SIGNAL for tiocmget call */
77 u8 reset; /* if 1 reset is needed */
78 int poll; /* number of poll */
79 u8 *writebuf; /* buffer for writing to device */
80 int writelen; /* num of byte to write to device */
81 u8 *buf; /* used for initialize speed */
82 u8 *dbgbuf; /* debug buffer */
83 u8 len;
84 };
85
86
87 static void iuu_free_buf(struct iuu_private *priv)
88 {
89 kfree(priv->buf);
90 kfree(priv->dbgbuf);
91 kfree(priv->writebuf);
92 }
93
94 static int iuu_alloc_buf(struct iuu_private *priv)
95 {
96 priv->buf = kzalloc(256, GFP_KERNEL);
97 priv->dbgbuf = kzalloc(256, GFP_KERNEL);
98 priv->writebuf = kzalloc(256, GFP_KERNEL);
99 if (!priv->buf || !priv->dbgbuf || !priv->writebuf) {
100 iuu_free_buf(priv);
101 dbg("%s problem allocation buffer", __func__);
102 return -ENOMEM;
103 }
104 dbg("%s - Privates buffers allocation success", __func__);
105 return 0;
106 }
107
108 static int iuu_startup(struct usb_serial *serial)
109 {
110 struct iuu_private *priv;
111 priv = kzalloc(sizeof(struct iuu_private), GFP_KERNEL);
112 dbg("%s- priv allocation success", __func__);
113 if (!priv)
114 return -ENOMEM;
115 if (iuu_alloc_buf(priv)) {
116 kfree(priv);
117 return -ENOMEM;
118 }
119 spin_lock_init(&priv->lock);
120 init_waitqueue_head(&priv->delta_msr_wait);
121 usb_set_serial_port_data(serial->port[0], priv);
122 return 0;
123 }
124
125 /* Shutdown function */
126 static void iuu_shutdown(struct usb_serial *serial)
127 {
128 struct usb_serial_port *port = serial->port[0];
129 struct iuu_private *priv = usb_get_serial_port_data(port);
130 if (!port)
131 return;
132
133 dbg("%s", __func__);
134
135 if (priv) {
136 iuu_free_buf(priv);
137 dbg("%s - I will free all", __func__);
138 usb_set_serial_port_data(port, NULL);
139
140 dbg("%s - priv is not anymore in port structure", __func__);
141 kfree(priv);
142
143 dbg("%s priv is now kfree", __func__);
144 }
145 }
146
147 static int iuu_tiocmset(struct tty_struct *tty, struct file *file,
148 unsigned int set, unsigned int clear)
149 {
150 struct usb_serial_port *port = tty->driver_data;
151 struct iuu_private *priv = usb_get_serial_port_data(port);
152 unsigned long flags;
153
154 /* FIXME: locking on tiomstatus */
155 dbg("%s (%d) msg : SET = 0x%04x, CLEAR = 0x%04x ", __func__,
156 port->number, set, clear);
157
158 spin_lock_irqsave(&priv->lock, flags);
159 if (set & TIOCM_RTS)
160 priv->tiostatus = TIOCM_RTS;
161
162 if (!(set & TIOCM_RTS) && priv->tiostatus == TIOCM_RTS) {
163 dbg("%s TIOCMSET RESET called !!!", __func__);
164 priv->reset = 1;
165 }
166 spin_unlock_irqrestore(&priv->lock, flags);
167 return 0;
168 }
169
170 /* This is used to provide a carrier detect mechanism
171 * When a card is present, the response is 0x00
172 * When no card , the reader respond with TIOCM_CD
173 * This is known as CD autodetect mechanism
174 */
175 static int iuu_tiocmget(struct tty_struct *tty, struct file *file)
176 {
177 struct usb_serial_port *port = tty->driver_data;
178 struct iuu_private *priv = usb_get_serial_port_data(port);
179 unsigned long flags;
180 int rc;
181
182 spin_lock_irqsave(&priv->lock, flags);
183 rc = priv->tiostatus;
184 spin_unlock_irqrestore(&priv->lock, flags);
185
186 return rc;
187 }
188
189 static void iuu_rxcmd(struct urb *urb)
190 {
191 struct usb_serial_port *port = urb->context;
192 int result;
193 dbg("%s - enter", __func__);
194
195 if (urb->status) {
196 dbg("%s - urb->status = %d", __func__, urb->status);
197 /* error stop all */
198 return;
199 }
200
201
202 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
203 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
204 usb_sndbulkpipe(port->serial->dev,
205 port->bulk_out_endpointAddress),
206 port->write_urb->transfer_buffer, 1,
207 read_rxcmd_callback, port);
208 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
209 }
210
211 static int iuu_reset(struct usb_serial_port *port, u8 wt)
212 {
213 struct iuu_private *priv = usb_get_serial_port_data(port);
214 int result;
215 char *buf_ptr = port->write_urb->transfer_buffer;
216 dbg("%s - enter", __func__);
217
218 /* Prepare the reset sequence */
219
220 *buf_ptr++ = IUU_RST_SET;
221 *buf_ptr++ = IUU_DELAY_MS;
222 *buf_ptr++ = wt;
223 *buf_ptr = IUU_RST_CLEAR;
224
225 /* send the sequence */
226
227 usb_fill_bulk_urb(port->write_urb,
228 port->serial->dev,
229 usb_sndbulkpipe(port->serial->dev,
230 port->bulk_out_endpointAddress),
231 port->write_urb->transfer_buffer, 4, iuu_rxcmd, port);
232 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
233 priv->reset = 0;
234 return result;
235 }
236
237 /* Status Function
238 * Return value is
239 * 0x00 = no card
240 * 0x01 = smartcard
241 * 0x02 = sim card
242 */
243 static void iuu_update_status_callback(struct urb *urb)
244 {
245 struct usb_serial_port *port = urb->context;
246 struct iuu_private *priv = usb_get_serial_port_data(port);
247 u8 *st;
248 dbg("%s - enter", __func__);
249
250 if (urb->status) {
251 dbg("%s - urb->status = %d", __func__, urb->status);
252 /* error stop all */
253 return;
254 }
255
256 st = urb->transfer_buffer;
257 dbg("%s - enter", __func__);
258 if (urb->actual_length == 1) {
259 switch (st[0]) {
260 case 0x1:
261 priv->tiostatus = iuu_cardout;
262 break;
263 case 0x0:
264 priv->tiostatus = iuu_cardin;
265 break;
266 default:
267 priv->tiostatus = iuu_cardin;
268 }
269 }
270 iuu_rxcmd(urb);
271 }
272
273 static void iuu_status_callback(struct urb *urb)
274 {
275 struct usb_serial_port *port = urb->context;
276 int result;
277 dbg("%s - enter", __func__);
278
279 dbg("%s - urb->status = %d", __func__, urb->status);
280 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
281 usb_rcvbulkpipe(port->serial->dev,
282 port->bulk_in_endpointAddress),
283 port->read_urb->transfer_buffer, 256,
284 iuu_update_status_callback, port);
285 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
286 }
287
288 static int iuu_status(struct usb_serial_port *port)
289 {
290 int result;
291
292 dbg("%s - enter", __func__);
293
294 memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1);
295 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
296 usb_sndbulkpipe(port->serial->dev,
297 port->bulk_out_endpointAddress),
298 port->write_urb->transfer_buffer, 1,
299 iuu_status_callback, port);
300 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
301 return result;
302
303 }
304
305 static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
306 {
307 int status;
308 struct usb_serial *serial = port->serial;
309 int actual = 0;
310
311 dbg("%s - enter", __func__);
312
313 /* send the data out the bulk port */
314
315 status =
316 usb_bulk_msg(serial->dev,
317 usb_sndbulkpipe(serial->dev,
318 port->bulk_out_endpointAddress), buf,
319 count, &actual, HZ * 1);
320
321 if (status != IUU_OPERATION_OK)
322 dbg("%s - error = %2x", __func__, status);
323 else
324 dbg("%s - write OK !", __func__);
325 return status;
326 }
327
328 static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
329 {
330 int status;
331 struct usb_serial *serial = port->serial;
332 int actual = 0;
333
334 dbg("%s - enter", __func__);
335
336 /* send the data out the bulk port */
337
338 status =
339 usb_bulk_msg(serial->dev,
340 usb_rcvbulkpipe(serial->dev,
341 port->bulk_in_endpointAddress), buf,
342 count, &actual, HZ * 1);
343
344 if (status != IUU_OPERATION_OK)
345 dbg("%s - error = %2x", __func__, status);
346 else
347 dbg("%s - read OK !", __func__);
348 return status;
349 }
350
351 static int iuu_led(struct usb_serial_port *port, unsigned int R,
352 unsigned int G, unsigned int B, u8 f)
353 {
354 int status;
355 u8 *buf;
356 buf = kmalloc(8, GFP_KERNEL);
357 if (!buf)
358 return -ENOMEM;
359
360 dbg("%s - enter", __func__);
361
362 buf[0] = IUU_SET_LED;
363 buf[1] = R & 0xFF;
364 buf[2] = (R >> 8) & 0xFF;
365 buf[3] = G & 0xFF;
366 buf[4] = (G >> 8) & 0xFF;
367 buf[5] = B & 0xFF;
368 buf[6] = (B >> 8) & 0xFF;
369 buf[7] = f;
370 status = bulk_immediate(port, buf, 8);
371 kfree(buf);
372 if (status != IUU_OPERATION_OK)
373 dbg("%s - led error status = %2x", __func__, status);
374 else
375 dbg("%s - led OK !", __func__);
376 return IUU_OPERATION_OK;
377 }
378
379 static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1,
380 u8 b2, u8 freq)
381 {
382 *buf++ = IUU_SET_LED;
383 *buf++ = r1;
384 *buf++ = r2;
385 *buf++ = g1;
386 *buf++ = g2;
387 *buf++ = b1;
388 *buf++ = b2;
389 *buf = freq;
390 }
391
392 static void iuu_led_activity_on(struct urb *urb)
393 {
394 struct usb_serial_port *port = urb->context;
395 int result;
396 char *buf_ptr = port->write_urb->transfer_buffer;
397 *buf_ptr++ = IUU_SET_LED;
398 if (xmas == 1) {
399 get_random_bytes(buf_ptr, 6);
400 *(buf_ptr+7) = 1;
401 } else {
402 iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255);
403 }
404
405 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
406 usb_sndbulkpipe(port->serial->dev,
407 port->bulk_out_endpointAddress),
408 port->write_urb->transfer_buffer, 8 ,
409 iuu_rxcmd, port);
410 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
411 }
412
413 static void iuu_led_activity_off(struct urb *urb)
414 {
415 struct usb_serial_port *port = urb->context;
416 int result;
417 char *buf_ptr = port->write_urb->transfer_buffer;
418 if (xmas == 1) {
419 iuu_rxcmd(urb);
420 return;
421 } else {
422 *buf_ptr++ = IUU_SET_LED;
423 iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255);
424 }
425 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
426 usb_sndbulkpipe(port->serial->dev,
427 port->bulk_out_endpointAddress),
428 port->write_urb->transfer_buffer, 8 ,
429 iuu_rxcmd, port);
430 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
431 }
432
433
434
435 static int iuu_clk(struct usb_serial_port *port, int dwFrq)
436 {
437 int status;
438 struct iuu_private *priv = usb_get_serial_port_data(port);
439 int Count = 0;
440 u8 FrqGenAdr = 0x69;
441 u8 DIV = 0; /* 8bit */
442 u8 XDRV = 0; /* 8bit */
443 u8 PUMP = 0; /* 3bit */
444 u8 PBmsb = 0; /* 2bit */
445 u8 PBlsb = 0; /* 8bit */
446 u8 PO = 0; /* 1bit */
447 u8 Q = 0; /* 7bit */
448 /* 24bit = 3bytes */
449 unsigned int P = 0;
450 unsigned int P2 = 0;
451 int frq = (int)dwFrq;
452
453 dbg("%s - enter", __func__);
454
455 if (frq == 0) {
456 priv->buf[Count++] = IUU_UART_WRITE_I2C;
457 priv->buf[Count++] = FrqGenAdr << 1;
458 priv->buf[Count++] = 0x09;
459 priv->buf[Count++] = 0x00;
460
461 status = bulk_immediate(port, (u8 *) priv->buf, Count);
462 if (status != 0) {
463 dbg("%s - write error ", __func__);
464 return status;
465 }
466 } else if (frq == 3579000) {
467 DIV = 100;
468 P = 1193;
469 Q = 40;
470 XDRV = 0;
471 } else if (frq == 3680000) {
472 DIV = 105;
473 P = 161;
474 Q = 5;
475 XDRV = 0;
476 } else if (frq == 6000000) {
477 DIV = 66;
478 P = 66;
479 Q = 2;
480 XDRV = 0x28;
481 } else {
482 unsigned int result = 0;
483 unsigned int tmp = 0;
484 unsigned int check;
485 unsigned int check2;
486 char found = 0x00;
487 unsigned int lQ = 2;
488 unsigned int lP = 2055;
489 unsigned int lDiv = 4;
490
491 for (lQ = 2; lQ <= 47 && !found; lQ++)
492 for (lP = 2055; lP >= 8 && !found; lP--)
493 for (lDiv = 4; lDiv <= 127 && !found; lDiv++) {
494 tmp = (12000000 / lDiv) * (lP / lQ);
495 if (abs((int)(tmp - frq)) <
496 abs((int)(frq - result))) {
497 check2 = (12000000 / lQ);
498 if (check2 < 250000)
499 continue;
500 check = (12000000 / lQ) * lP;
501 if (check > 400000000)
502 continue;
503 if (check < 100000000)
504 continue;
505 if (lDiv < 4 || lDiv > 127)
506 continue;
507 result = tmp;
508 P = lP;
509 DIV = lDiv;
510 Q = lQ;
511 if (result == frq)
512 found = 0x01;
513 }
514 }
515 }
516 P2 = ((P - PO) / 2) - 4;
517 DIV = DIV;
518 PUMP = 0x04;
519 PBmsb = (P2 >> 8 & 0x03);
520 PBlsb = P2 & 0xFF;
521 PO = (P >> 10) & 0x01;
522 Q = Q - 2;
523
524 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
525 priv->buf[Count++] = FrqGenAdr << 1;
526 priv->buf[Count++] = 0x09;
527 priv->buf[Count++] = 0x20; /* Adr = 0x09 */
528 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
529 priv->buf[Count++] = FrqGenAdr << 1;
530 priv->buf[Count++] = 0x0C;
531 priv->buf[Count++] = DIV; /* Adr = 0x0C */
532 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
533 priv->buf[Count++] = FrqGenAdr << 1;
534 priv->buf[Count++] = 0x12;
535 priv->buf[Count++] = XDRV; /* Adr = 0x12 */
536 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
537 priv->buf[Count++] = FrqGenAdr << 1;
538 priv->buf[Count++] = 0x13;
539 priv->buf[Count++] = 0x6B; /* Adr = 0x13 */
540 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
541 priv->buf[Count++] = FrqGenAdr << 1;
542 priv->buf[Count++] = 0x40;
543 priv->buf[Count++] = (0xC0 | ((PUMP & 0x07) << 2)) |
544 (PBmsb & 0x03); /* Adr = 0x40 */
545 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
546 priv->buf[Count++] = FrqGenAdr << 1;
547 priv->buf[Count++] = 0x41;
548 priv->buf[Count++] = PBlsb; /* Adr = 0x41 */
549 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
550 priv->buf[Count++] = FrqGenAdr << 1;
551 priv->buf[Count++] = 0x42;
552 priv->buf[Count++] = Q | (((PO & 0x01) << 7)); /* Adr = 0x42 */
553 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
554 priv->buf[Count++] = FrqGenAdr << 1;
555 priv->buf[Count++] = 0x44;
556 priv->buf[Count++] = (char)0xFF; /* Adr = 0x44 */
557 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
558 priv->buf[Count++] = FrqGenAdr << 1;
559 priv->buf[Count++] = 0x45;
560 priv->buf[Count++] = (char)0xFE; /* Adr = 0x45 */
561 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
562 priv->buf[Count++] = FrqGenAdr << 1;
563 priv->buf[Count++] = 0x46;
564 priv->buf[Count++] = 0x7F; /* Adr = 0x46 */
565 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
566 priv->buf[Count++] = FrqGenAdr << 1;
567 priv->buf[Count++] = 0x47;
568 priv->buf[Count++] = (char)0x84; /* Adr = 0x47 */
569
570 status = bulk_immediate(port, (u8 *) priv->buf, Count);
571 if (status != IUU_OPERATION_OK)
572 dbg("%s - write error ", __func__);
573 return status;
574 }
575
576 static int iuu_uart_flush(struct usb_serial_port *port)
577 {
578 int i;
579 int status;
580 u8 rxcmd = IUU_UART_RX;
581 struct iuu_private *priv = usb_get_serial_port_data(port);
582
583 dbg("%s - enter", __func__);
584
585 if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0)
586 return -EIO;
587
588 for (i = 0; i < 2; i++) {
589 status = bulk_immediate(port, &rxcmd, 1);
590 if (status != IUU_OPERATION_OK) {
591 dbg("%s - uart_flush_write error", __func__);
592 return status;
593 }
594
595 status = read_immediate(port, &priv->len, 1);
596 if (status != IUU_OPERATION_OK) {
597 dbg("%s - uart_flush_read error", __func__);
598 return status;
599 }
600
601 if (priv->len > 0) {
602 dbg("%s - uart_flush datalen is : %i ", __func__,
603 priv->len);
604 status = read_immediate(port, priv->buf, priv->len);
605 if (status != IUU_OPERATION_OK) {
606 dbg("%s - uart_flush_read error", __func__);
607 return status;
608 }
609 }
610 }
611 dbg("%s - uart_flush_read OK!", __func__);
612 iuu_led(port, 0, 0xF000, 0, 0xFF);
613 return status;
614 }
615
616 static void read_buf_callback(struct urb *urb)
617 {
618 struct usb_serial_port *port = urb->context;
619 unsigned char *data = urb->transfer_buffer;
620 struct tty_struct *tty;
621 dbg("%s - urb->status = %d", __func__, urb->status);
622
623 if (urb->status) {
624 dbg("%s - urb->status = %d", __func__, urb->status);
625 if (urb->status == -EPROTO) {
626 /* reschedule needed */
627 }
628 return;
629 }
630
631 dbg("%s - %i chars to write", __func__, urb->actual_length);
632 tty = tty_port_tty_get(&port->port);
633 if (data == NULL)
634 dbg("%s - data is NULL !!!", __func__);
635 if (tty && urb->actual_length && data) {
636 tty_insert_flip_string(tty, data, urb->actual_length);
637 tty_flip_buffer_push(tty);
638 }
639 tty_kref_put(tty);
640 iuu_led_activity_on(urb);
641 }
642
643 static int iuu_bulk_write(struct usb_serial_port *port)
644 {
645 struct iuu_private *priv = usb_get_serial_port_data(port);
646 unsigned long flags;
647 int result;
648 int i;
649 char *buf_ptr = port->write_urb->transfer_buffer;
650 dbg("%s - enter", __func__);
651
652 *buf_ptr++ = IUU_UART_ESC;
653 *buf_ptr++ = IUU_UART_TX;
654 *buf_ptr++ = priv->writelen;
655
656 memcpy(buf_ptr, priv->writebuf,
657 priv->writelen);
658 if (debug == 1) {
659 for (i = 0; i < priv->writelen; i++)
660 sprintf(priv->dbgbuf + i*2 ,
661 "%02X", priv->writebuf[i]);
662 priv->dbgbuf[priv->writelen+i*2] = 0;
663 dbg("%s - writing %i chars : %s", __func__,
664 priv->writelen, priv->dbgbuf);
665 }
666 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
667 usb_sndbulkpipe(port->serial->dev,
668 port->bulk_out_endpointAddress),
669 port->write_urb->transfer_buffer, priv->writelen + 3,
670 iuu_rxcmd, port);
671 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
672 spin_lock_irqsave(&priv->lock, flags);
673 priv->writelen = 0;
674 spin_unlock_irqrestore(&priv->lock, flags);
675 usb_serial_port_softint(port);
676 return result;
677 }
678
679 static int iuu_read_buf(struct usb_serial_port *port, int len)
680 {
681 int result;
682 dbg("%s - enter", __func__);
683
684 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
685 usb_rcvbulkpipe(port->serial->dev,
686 port->bulk_in_endpointAddress),
687 port->read_urb->transfer_buffer, len,
688 read_buf_callback, port);
689 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
690 return result;
691 }
692
693 static void iuu_uart_read_callback(struct urb *urb)
694 {
695 struct usb_serial_port *port = urb->context;
696 struct iuu_private *priv = usb_get_serial_port_data(port);
697 unsigned long flags;
698 int status;
699 int error = 0;
700 int len = 0;
701 unsigned char *data = urb->transfer_buffer;
702 priv->poll++;
703
704 dbg("%s - enter", __func__);
705
706 if (urb->status) {
707 dbg("%s - urb->status = %d", __func__, urb->status);
708 /* error stop all */
709 return;
710 }
711 if (data == NULL)
712 dbg("%s - data is NULL !!!", __func__);
713
714 if (urb->actual_length == 1 && data != NULL)
715 len = (int) data[0];
716
717 if (urb->actual_length > 1) {
718 dbg("%s - urb->actual_length = %i", __func__,
719 urb->actual_length);
720 error = 1;
721 return;
722 }
723 /* if len > 0 call readbuf */
724
725 if (len > 0 && error == 0) {
726 dbg("%s - call read buf - len to read is %i ",
727 __func__, len);
728 status = iuu_read_buf(port, len);
729 return;
730 }
731 /* need to update status ? */
732 if (priv->poll > 99) {
733 status = iuu_status(port);
734 priv->poll = 0;
735 return;
736 }
737
738 /* reset waiting ? */
739
740 if (priv->reset == 1) {
741 status = iuu_reset(port, 0xC);
742 return;
743 }
744 /* Writebuf is waiting */
745 spin_lock_irqsave(&priv->lock, flags);
746 if (priv->writelen > 0) {
747 spin_unlock_irqrestore(&priv->lock, flags);
748 status = iuu_bulk_write(port);
749 return;
750 }
751 spin_unlock_irqrestore(&priv->lock, flags);
752 /* if nothing to write call again rxcmd */
753 dbg("%s - rxcmd recall", __func__);
754 iuu_led_activity_off(urb);
755 }
756
757 static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port,
758 const u8 *buf, int count)
759 {
760 struct iuu_private *priv = usb_get_serial_port_data(port);
761 unsigned long flags;
762 dbg("%s - enter", __func__);
763
764 if (count > 256)
765 return -ENOMEM;
766
767 spin_lock_irqsave(&priv->lock, flags);
768 if (priv->writelen > 0) {
769 /* buffer already filled but not commited */
770 spin_unlock_irqrestore(&priv->lock, flags);
771 return 0;
772 }
773 /* fill the buffer */
774 memcpy(priv->writebuf, buf, count);
775 priv->writelen = count;
776 spin_unlock_irqrestore(&priv->lock, flags);
777
778 return count;
779 }
780
781 static void read_rxcmd_callback(struct urb *urb)
782 {
783 struct usb_serial_port *port = urb->context;
784 int result;
785 dbg("%s - enter", __func__);
786
787 dbg("%s - urb->status = %d", __func__, urb->status);
788
789 if (urb->status) {
790 dbg("%s - urb->status = %d", __func__, urb->status);
791 /* error stop all */
792 return;
793 }
794
795 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
796 usb_rcvbulkpipe(port->serial->dev,
797 port->bulk_in_endpointAddress),
798 port->read_urb->transfer_buffer, 256,
799 iuu_uart_read_callback, port);
800 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
801 dbg("%s - submit result = %d", __func__, result);
802 return;
803 }
804
805 static int iuu_uart_on(struct usb_serial_port *port)
806 {
807 int status;
808 u8 *buf;
809
810 buf = kmalloc(sizeof(u8) * 4, GFP_KERNEL);
811
812 if (!buf)
813 return -ENOMEM;
814
815 buf[0] = IUU_UART_ENABLE;
816 buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF);
817 buf[2] = (u8) (0x00FF & IUU_BAUD_9600);
818 buf[3] = (u8) (0x0F0 & IUU_TWO_STOP_BITS) | (0x07 & IUU_PARITY_EVEN);
819
820 status = bulk_immediate(port, buf, 4);
821 if (status != IUU_OPERATION_OK) {
822 dbg("%s - uart_on error", __func__);
823 goto uart_enable_failed;
824 }
825 /* iuu_reset() the card after iuu_uart_on() */
826 status = iuu_uart_flush(port);
827 if (status != IUU_OPERATION_OK)
828 dbg("%s - uart_flush error", __func__);
829 uart_enable_failed:
830 kfree(buf);
831 return status;
832 }
833
834 /* Diables the IUU UART (a.k.a. the Phoenix voiderface) */
835 static int iuu_uart_off(struct usb_serial_port *port)
836 {
837 int status;
838 u8 *buf;
839 buf = kmalloc(1, GFP_KERNEL);
840 if (!buf)
841 return -ENOMEM;
842 buf[0] = IUU_UART_DISABLE;
843
844 status = bulk_immediate(port, buf, 1);
845 if (status != IUU_OPERATION_OK)
846 dbg("%s - uart_off error", __func__);
847
848 kfree(buf);
849 return status;
850 }
851
852 static int iuu_uart_baud(struct usb_serial_port *port, u32 baud,
853 u32 *actual, u8 parity)
854 {
855 int status;
856 u8 *dataout;
857 u8 DataCount = 0;
858 u8 T1Frekvens = 0;
859 u8 T1reload = 0;
860 unsigned int T1FrekvensHZ = 0;
861
862 dataout = kmalloc(sizeof(u8) * 5, GFP_KERNEL);
863
864 if (!dataout)
865 return -ENOMEM;
866
867 if (baud < 1200 || baud > 230400) {
868 kfree(dataout);
869 return IUU_INVALID_PARAMETER;
870 }
871 if (baud > 977) {
872 T1Frekvens = 3;
873 T1FrekvensHZ = 500000;
874 }
875
876 if (baud > 3906) {
877 T1Frekvens = 2;
878 T1FrekvensHZ = 2000000;
879 }
880
881 if (baud > 11718) {
882 T1Frekvens = 1;
883 T1FrekvensHZ = 6000000;
884 }
885
886 if (baud > 46875) {
887 T1Frekvens = 0;
888 T1FrekvensHZ = 24000000;
889 }
890
891 T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2));
892
893 /* magic number here: ENTER_FIRMWARE_UPDATE; */
894 dataout[DataCount++] = IUU_UART_ESC;
895 /* magic number here: CHANGE_BAUD; */
896 dataout[DataCount++] = IUU_UART_CHANGE;
897 dataout[DataCount++] = T1Frekvens;
898 dataout[DataCount++] = T1reload;
899
900 *actual = (T1FrekvensHZ / (256 - T1reload)) / 2;
901
902 switch (parity & 0x0F) {
903 case IUU_PARITY_NONE:
904 dataout[DataCount++] = 0x00;
905 break;
906 case IUU_PARITY_EVEN:
907 dataout[DataCount++] = 0x01;
908 break;
909 case IUU_PARITY_ODD:
910 dataout[DataCount++] = 0x02;
911 break;
912 case IUU_PARITY_MARK:
913 dataout[DataCount++] = 0x03;
914 break;
915 case IUU_PARITY_SPACE:
916 dataout[DataCount++] = 0x04;
917 break;
918 default:
919 kfree(dataout);
920 return IUU_INVALID_PARAMETER;
921 break;
922 }
923
924 switch (parity & 0xF0) {
925 case IUU_ONE_STOP_BIT:
926 dataout[DataCount - 1] |= IUU_ONE_STOP_BIT;
927 break;
928
929 case IUU_TWO_STOP_BITS:
930 dataout[DataCount - 1] |= IUU_TWO_STOP_BITS;
931 break;
932 default:
933 kfree(dataout);
934 return IUU_INVALID_PARAMETER;
935 break;
936 }
937
938 status = bulk_immediate(port, dataout, DataCount);
939 if (status != IUU_OPERATION_OK)
940 dbg("%s - uart_off error", __func__);
941 kfree(dataout);
942 return status;
943 }
944
945 static int set_control_lines(struct usb_device *dev, u8 value)
946 {
947 return 0;
948 }
949
950 static void iuu_close(struct tty_struct *tty,
951 struct usb_serial_port *port, struct file *filp)
952 {
953 /* iuu_led (port,255,0,0,0); */
954 struct usb_serial *serial;
955 struct iuu_private *priv = usb_get_serial_port_data(port);
956 unsigned long flags;
957 unsigned int c_cflag;
958
959 serial = port->serial;
960 if (!serial)
961 return;
962
963 dbg("%s - port %d", __func__, port->number);
964
965 iuu_uart_off(port);
966 if (serial->dev) {
967 if (tty) {
968 c_cflag = tty->termios->c_cflag;
969 if (c_cflag & HUPCL) {
970 /* drop DTR and RTS */
971 priv = usb_get_serial_port_data(port);
972 spin_lock_irqsave(&priv->lock, flags);
973 priv->line_control = 0;
974 spin_unlock_irqrestore(&priv->lock, flags);
975 set_control_lines(port->serial->dev, 0);
976 }
977 }
978 /* free writebuf */
979 /* shutdown our urbs */
980 dbg("%s - shutting down urbs", __func__);
981 usb_kill_urb(port->write_urb);
982 usb_kill_urb(port->read_urb);
983 usb_kill_urb(port->interrupt_in_urb);
984 msleep(1000);
985 /* wait one second to free all buffers */
986 iuu_led(port, 0, 0, 0xF000, 0xFF);
987 msleep(1000);
988 usb_reset_device(port->serial->dev);
989 }
990 }
991
992 static int iuu_open(struct tty_struct *tty,
993 struct usb_serial_port *port, struct file *filp)
994 {
995 struct usb_serial *serial = port->serial;
996 u8 *buf;
997 int result;
998 u32 actual;
999 unsigned long flags;
1000 struct iuu_private *priv = usb_get_serial_port_data(port);
1001
1002 dbg("%s - port %d", __func__, port->number);
1003 usb_clear_halt(serial->dev, port->write_urb->pipe);
1004 usb_clear_halt(serial->dev, port->read_urb->pipe);
1005
1006 buf = kmalloc(10, GFP_KERNEL);
1007 if (buf == NULL)
1008 return -ENOMEM;
1009
1010 /* fixup the endpoint buffer size */
1011 kfree(port->bulk_out_buffer);
1012 port->bulk_out_buffer = kmalloc(512, GFP_KERNEL);
1013 port->bulk_out_size = 512;
1014 kfree(port->bulk_in_buffer);
1015 port->bulk_in_buffer = kmalloc(512, GFP_KERNEL);
1016 port->bulk_in_size = 512;
1017
1018 if (!port->bulk_out_buffer || !port->bulk_in_buffer) {
1019 kfree(port->bulk_out_buffer);
1020 kfree(port->bulk_in_buffer);
1021 kfree(buf);
1022 return -ENOMEM;
1023 }
1024
1025 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1026 usb_sndbulkpipe(port->serial->dev,
1027 port->bulk_out_endpointAddress),
1028 port->bulk_out_buffer, 512,
1029 NULL, NULL);
1030
1031
1032 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
1033 usb_rcvbulkpipe(port->serial->dev,
1034 port->bulk_in_endpointAddress),
1035 port->bulk_in_buffer, 512,
1036 NULL, NULL);
1037
1038 /* set the termios structure */
1039 spin_lock_irqsave(&priv->lock, flags);
1040 if (tty && !priv->termios_initialized) {
1041 *(tty->termios) = tty_std_termios;
1042 tty->termios->c_cflag = CLOCAL | CREAD | CS8 | B9600
1043 | TIOCM_CTS | CSTOPB | PARENB;
1044 tty->termios->c_ispeed = 9600;
1045 tty->termios->c_ospeed = 9600;
1046 tty->termios->c_lflag = 0;
1047 tty->termios->c_oflag = 0;
1048 tty->termios->c_iflag = 0;
1049 priv->termios_initialized = 1;
1050 tty->low_latency = 1;
1051 priv->poll = 0;
1052 }
1053 spin_unlock_irqrestore(&priv->lock, flags);
1054
1055 /* initialize writebuf */
1056 #define FISH(a, b, c, d) do { \
1057 result = usb_control_msg(port->serial->dev, \
1058 usb_rcvctrlpipe(port->serial->dev, 0), \
1059 b, a, c, d, buf, 1, 1000); \
1060 dbg("0x%x:0x%x:0x%x:0x%x %d - %x", a, b, c, d, result, \
1061 buf[0]); } while (0);
1062
1063 #define SOUP(a, b, c, d) do { \
1064 result = usb_control_msg(port->serial->dev, \
1065 usb_sndctrlpipe(port->serial->dev, 0), \
1066 b, a, c, d, NULL, 0, 1000); \
1067 dbg("0x%x:0x%x:0x%x:0x%x %d", a, b, c, d, result); } while (0)
1068
1069 /* This is not UART related but IUU USB driver related or something */
1070 /* like that. Basically no IUU will accept any commands from the USB */
1071 /* host unless it has received the following message */
1072 /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */
1073
1074 SOUP(0x03, 0x02, 0x02, 0x0);
1075 kfree(buf);
1076 iuu_led(port, 0xF000, 0xF000, 0, 0xFF);
1077 iuu_uart_on(port);
1078 if (boost < 100)
1079 boost = 100;
1080 switch (clockmode) {
1081 case 2: /* 3.680 Mhz */
1082 iuu_clk(port, IUU_CLK_3680000 * boost / 100);
1083 result =
1084 iuu_uart_baud(port, 9600 * boost / 100, &actual,
1085 IUU_PARITY_EVEN);
1086 break;
1087 case 3: /* 6.00 Mhz */
1088 iuu_clk(port, IUU_CLK_6000000 * boost / 100);
1089 result =
1090 iuu_uart_baud(port, 16457 * boost / 100, &actual,
1091 IUU_PARITY_EVEN);
1092 break;
1093 default: /* 3.579 Mhz */
1094 iuu_clk(port, IUU_CLK_3579000 * boost / 100);
1095 result =
1096 iuu_uart_baud(port, 9600 * boost / 100, &actual,
1097 IUU_PARITY_EVEN);
1098 }
1099
1100 /* set the cardin cardout signals */
1101 switch (cdmode) {
1102 case 0:
1103 iuu_cardin = 0;
1104 iuu_cardout = 0;
1105 break;
1106 case 1:
1107 iuu_cardin = TIOCM_CD;
1108 iuu_cardout = 0;
1109 break;
1110 case 2:
1111 iuu_cardin = 0;
1112 iuu_cardout = TIOCM_CD;
1113 break;
1114 case 3:
1115 iuu_cardin = TIOCM_DSR;
1116 iuu_cardout = 0;
1117 break;
1118 case 4:
1119 iuu_cardin = 0;
1120 iuu_cardout = TIOCM_DSR;
1121 break;
1122 case 5:
1123 iuu_cardin = TIOCM_CTS;
1124 iuu_cardout = 0;
1125 break;
1126 case 6:
1127 iuu_cardin = 0;
1128 iuu_cardout = TIOCM_CTS;
1129 break;
1130 case 7:
1131 iuu_cardin = TIOCM_RNG;
1132 iuu_cardout = 0;
1133 break;
1134 case 8:
1135 iuu_cardin = 0;
1136 iuu_cardout = TIOCM_RNG;
1137 }
1138
1139 iuu_uart_flush(port);
1140
1141 dbg("%s - initialization done", __func__);
1142
1143 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
1144 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1145 usb_sndbulkpipe(port->serial->dev,
1146 port->bulk_out_endpointAddress),
1147 port->write_urb->transfer_buffer, 1,
1148 read_rxcmd_callback, port);
1149 result = usb_submit_urb(port->write_urb, GFP_KERNEL);
1150
1151 if (result) {
1152 dev_err(&port->dev, "%s - failed submitting read urb,"
1153 " error %d\n", __func__, result);
1154 iuu_close(tty, port, NULL);
1155 return -EPROTO;
1156 } else {
1157 dbg("%s - rxcmd OK", __func__);
1158 }
1159 return result;
1160 }
1161
1162 static struct usb_serial_driver iuu_device = {
1163 .driver = {
1164 .owner = THIS_MODULE,
1165 .name = "iuu_phoenix",
1166 },
1167 .id_table = id_table,
1168 .num_ports = 1,
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 .attach = iuu_startup,
1176 .shutdown = iuu_shutdown,
1177 };
1178
1179 static int __init iuu_init(void)
1180 {
1181 int retval;
1182 retval = usb_serial_register(&iuu_device);
1183 if (retval)
1184 goto failed_usb_serial_register;
1185 retval = usb_register(&iuu_driver);
1186 if (retval)
1187 goto failed_usb_register;
1188 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
1189 DRIVER_DESC "\n");
1190 return 0;
1191 failed_usb_register:
1192 usb_serial_deregister(&iuu_device);
1193 failed_usb_serial_register:
1194 return retval;
1195 }
1196
1197 static void __exit iuu_exit(void)
1198 {
1199 usb_deregister(&iuu_driver);
1200 usb_serial_deregister(&iuu_device);
1201 }
1202
1203 module_init(iuu_init);
1204 module_exit(iuu_exit);
1205
1206 MODULE_AUTHOR("Alain Degreffe eczema@ecze.com");
1207
1208 MODULE_DESCRIPTION(DRIVER_DESC);
1209 MODULE_LICENSE("GPL");
1210
1211 MODULE_VERSION(DRIVER_VERSION);
1212 module_param(debug, bool, S_IRUGO | S_IWUSR);
1213 MODULE_PARM_DESC(debug, "Debug enabled or not");
1214
1215 module_param(xmas, bool, S_IRUGO | S_IWUSR);
1216 MODULE_PARM_DESC(xmas, "xmas color enabled or not");
1217
1218 module_param(boost, int, S_IRUGO | S_IWUSR);
1219 MODULE_PARM_DESC(boost, "overclock boost percent 100 to 500");
1220
1221 module_param(clockmode, int, S_IRUGO | S_IWUSR);
1222 MODULE_PARM_DESC(clockmode, "1=3Mhz579,2=3Mhz680,3=6Mhz");
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");
Linux kernel - Deliverables
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