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tty: Bring the usb tty port structure into more use
[linux-2.6/kvm.git] / drivers / usb / serial / iuu_phoenix.c
blobbb572cee6ecdd78be4b1e3127eb58cfe2df04a59
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_status;
74 u8 termios_initialized;
75 int tiostatus; /* store IUART SIGNAL for tiocmget call */
76 u8 reset; /* if 1 reset is needed */
77 int poll; /* number of poll */
78 u8 *writebuf; /* buffer for writing to device */
79 int writelen; /* num of byte to write to device */
80 u8 *buf; /* used for initialize speed */
81 u8 *dbgbuf; /* debug buffer */
82 u8 len;
83 };
84
85
86 static void iuu_free_buf(struct iuu_private *priv)
87 {
88 kfree(priv->buf);
89 kfree(priv->dbgbuf);
90 kfree(priv->writebuf);
91 }
92
93 static int iuu_alloc_buf(struct iuu_private *priv)
94 {
95 priv->buf = kzalloc(256, GFP_KERNEL);
96 priv->dbgbuf = kzalloc(256, GFP_KERNEL);
97 priv->writebuf = kzalloc(256, GFP_KERNEL);
98 if (!priv->buf || !priv->dbgbuf || !priv->writebuf) {
99 iuu_free_buf(priv);
100 dbg("%s problem allocation buffer", __func__);
101 return -ENOMEM;
102 }
103 dbg("%s - Privates buffers allocation success", __func__);
104 return 0;
105 }
106
107 static int iuu_startup(struct usb_serial *serial)
108 {
109 struct iuu_private *priv;
110 priv = kzalloc(sizeof(struct iuu_private), GFP_KERNEL);
111 dbg("%s- priv allocation success", __func__);
112 if (!priv)
113 return -ENOMEM;
114 if (iuu_alloc_buf(priv)) {
115 kfree(priv);
116 return -ENOMEM;
117 }
118 spin_lock_init(&priv->lock);
119 init_waitqueue_head(&priv->delta_msr_wait);
120 usb_set_serial_port_data(serial->port[0], priv);
121 return 0;
122 }
123
124 /* Shutdown function */
125 static void iuu_shutdown(struct usb_serial *serial)
126 {
127 struct usb_serial_port *port = serial->port[0];
128 struct iuu_private *priv = usb_get_serial_port_data(port);
129 if (!port)
130 return;
131
132 dbg("%s", __func__);
133
134 if (priv) {
135 iuu_free_buf(priv);
136 dbg("%s - I will free all", __func__);
137 usb_set_serial_port_data(port, NULL);
138
139 dbg("%s - priv is not anymore in port structure", __func__);
140 kfree(priv);
141
142 dbg("%s priv is now kfree", __func__);
143 }
144 }
145
146 static int iuu_tiocmset(struct tty_struct *tty, struct file *file,
147 unsigned int set, unsigned int clear)
148 {
149 struct usb_serial_port *port = tty->driver_data;
150 struct iuu_private *priv = usb_get_serial_port_data(port);
151 unsigned long flags;
152
153 /* FIXME: locking on tiomstatus */
154 dbg("%s (%d) msg : SET = 0x%04x, CLEAR = 0x%04x ", __func__,
155 port->number, set, clear);
156
157 spin_lock_irqsave(&priv->lock, flags);
158 if (set & TIOCM_RTS)
159 priv->tiostatus = TIOCM_RTS;
160
161 if (!(set & TIOCM_RTS) && priv->tiostatus == TIOCM_RTS) {
162 dbg("%s TIOCMSET RESET called !!!", __func__);
163 priv->reset = 1;
164 }
165 spin_unlock_irqrestore(&priv->lock, flags);
166 return 0;
167 }
168
169 /* This is used to provide a carrier detect mechanism
170 * When a card is present, the response is 0x00
171 * When no card , the reader respond with TIOCM_CD
172 * This is known as CD autodetect mechanism
173 */
174 static int iuu_tiocmget(struct tty_struct *tty, struct file *file)
175 {
176 struct usb_serial_port *port = tty->driver_data;
177 struct iuu_private *priv = usb_get_serial_port_data(port);
178 unsigned long flags;
179 int rc;
180
181 spin_lock_irqsave(&priv->lock, flags);
182 rc = priv->tiostatus;
183 spin_unlock_irqrestore(&priv->lock, flags);
184
185 return rc;
186 }
187
188 static void iuu_rxcmd(struct urb *urb)
189 {
190 struct usb_serial_port *port = urb->context;
191 int result;
192 int status = urb->status;
193
194 dbg("%s - enter", __func__);
195
196 if (status) {
197 dbg("%s - status = %d", __func__, status);
198 /* error stop all */
199 return;
200 }
201
202
203 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
204 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
205 usb_sndbulkpipe(port->serial->dev,
206 port->bulk_out_endpointAddress),
207 port->write_urb->transfer_buffer, 1,
208 read_rxcmd_callback, port);
209 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
210 }
211
212 static int iuu_reset(struct usb_serial_port *port, u8 wt)
213 {
214 struct iuu_private *priv = usb_get_serial_port_data(port);
215 int result;
216 char *buf_ptr = port->write_urb->transfer_buffer;
217 dbg("%s - enter", __func__);
218
219 /* Prepare the reset sequence */
220
221 *buf_ptr++ = IUU_RST_SET;
222 *buf_ptr++ = IUU_DELAY_MS;
223 *buf_ptr++ = wt;
224 *buf_ptr = IUU_RST_CLEAR;
225
226 /* send the sequence */
227
228 usb_fill_bulk_urb(port->write_urb,
229 port->serial->dev,
230 usb_sndbulkpipe(port->serial->dev,
231 port->bulk_out_endpointAddress),
232 port->write_urb->transfer_buffer, 4, iuu_rxcmd, port);
233 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
234 priv->reset = 0;
235 return result;
236 }
237
238 /* Status Function
239 * Return value is
240 * 0x00 = no card
241 * 0x01 = smartcard
242 * 0x02 = sim card
243 */
244 static void iuu_update_status_callback(struct urb *urb)
245 {
246 struct usb_serial_port *port = urb->context;
247 struct iuu_private *priv = usb_get_serial_port_data(port);
248 u8 *st;
249 int status = urb->status;
250
251 dbg("%s - enter", __func__);
252
253 if (status) {
254 dbg("%s - status = %d", __func__, status);
255 /* error stop all */
256 return;
257 }
258
259 st = urb->transfer_buffer;
260 dbg("%s - enter", __func__);
261 if (urb->actual_length == 1) {
262 switch (st[0]) {
263 case 0x1:
264 priv->tiostatus = iuu_cardout;
265 break;
266 case 0x0:
267 priv->tiostatus = iuu_cardin;
268 break;
269 default:
270 priv->tiostatus = iuu_cardin;
271 }
272 }
273 iuu_rxcmd(urb);
274 }
275
276 static void iuu_status_callback(struct urb *urb)
277 {
278 struct usb_serial_port *port = urb->context;
279 int result;
280 int status = urb->status;
281
282 dbg("%s - status = %d", __func__, status);
283 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
284 usb_rcvbulkpipe(port->serial->dev,
285 port->bulk_in_endpointAddress),
286 port->read_urb->transfer_buffer, 256,
287 iuu_update_status_callback, port);
288 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
289 }
290
291 static int iuu_status(struct usb_serial_port *port)
292 {
293 int result;
294
295 dbg("%s - enter", __func__);
296
297 memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1);
298 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
299 usb_sndbulkpipe(port->serial->dev,
300 port->bulk_out_endpointAddress),
301 port->write_urb->transfer_buffer, 1,
302 iuu_status_callback, port);
303 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
304 return result;
305
306 }
307
308 static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
309 {
310 int status;
311 struct usb_serial *serial = port->serial;
312 int actual = 0;
313
314 dbg("%s - enter", __func__);
315
316 /* send the data out the bulk port */
317
318 status =
319 usb_bulk_msg(serial->dev,
320 usb_sndbulkpipe(serial->dev,
321 port->bulk_out_endpointAddress), buf,
322 count, &actual, HZ * 1);
323
324 if (status != IUU_OPERATION_OK)
325 dbg("%s - error = %2x", __func__, status);
326 else
327 dbg("%s - write OK !", __func__);
328 return status;
329 }
330
331 static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
332 {
333 int status;
334 struct usb_serial *serial = port->serial;
335 int actual = 0;
336
337 dbg("%s - enter", __func__);
338
339 /* send the data out the bulk port */
340
341 status =
342 usb_bulk_msg(serial->dev,
343 usb_rcvbulkpipe(serial->dev,
344 port->bulk_in_endpointAddress), buf,
345 count, &actual, HZ * 1);
346
347 if (status != IUU_OPERATION_OK)
348 dbg("%s - error = %2x", __func__, status);
349 else
350 dbg("%s - read OK !", __func__);
351 return status;
352 }
353
354 static int iuu_led(struct usb_serial_port *port, unsigned int R,
355 unsigned int G, unsigned int B, u8 f)
356 {
357 int status;
358 u8 *buf;
359 buf = kmalloc(8, GFP_KERNEL);
360 if (!buf)
361 return -ENOMEM;
362
363 dbg("%s - enter", __func__);
364
365 buf[0] = IUU_SET_LED;
366 buf[1] = R & 0xFF;
367 buf[2] = (R >> 8) & 0xFF;
368 buf[3] = G & 0xFF;
369 buf[4] = (G >> 8) & 0xFF;
370 buf[5] = B & 0xFF;
371 buf[6] = (B >> 8) & 0xFF;
372 buf[7] = f;
373 status = bulk_immediate(port, buf, 8);
374 kfree(buf);
375 if (status != IUU_OPERATION_OK)
376 dbg("%s - led error status = %2x", __func__, status);
377 else
378 dbg("%s - led OK !", __func__);
379 return IUU_OPERATION_OK;
380 }
381
382 static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1,
383 u8 b2, u8 freq)
384 {
385 *buf++ = IUU_SET_LED;
386 *buf++ = r1;
387 *buf++ = r2;
388 *buf++ = g1;
389 *buf++ = g2;
390 *buf++ = b1;
391 *buf++ = b2;
392 *buf = freq;
393 }
394
395 static void iuu_led_activity_on(struct urb *urb)
396 {
397 struct usb_serial_port *port = urb->context;
398 int result;
399 char *buf_ptr = port->write_urb->transfer_buffer;
400 *buf_ptr++ = IUU_SET_LED;
401 if (xmas == 1) {
402 get_random_bytes(buf_ptr, 6);
403 *(buf_ptr+7) = 1;
404 } else {
405 iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255);
406 }
407
408 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
409 usb_sndbulkpipe(port->serial->dev,
410 port->bulk_out_endpointAddress),
411 port->write_urb->transfer_buffer, 8 ,
412 iuu_rxcmd, port);
413 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
414 }
415
416 static void iuu_led_activity_off(struct urb *urb)
417 {
418 struct usb_serial_port *port = urb->context;
419 int result;
420 char *buf_ptr = port->write_urb->transfer_buffer;
421 if (xmas == 1) {
422 iuu_rxcmd(urb);
423 return;
424 } else {
425 *buf_ptr++ = IUU_SET_LED;
426 iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255);
427 }
428 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
429 usb_sndbulkpipe(port->serial->dev,
430 port->bulk_out_endpointAddress),
431 port->write_urb->transfer_buffer, 8 ,
432 iuu_rxcmd, port);
433 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
434 }
435
436
437
438 static int iuu_clk(struct usb_serial_port *port, int dwFrq)
439 {
440 int status;
441 struct iuu_private *priv = usb_get_serial_port_data(port);
442 int Count = 0;
443 u8 FrqGenAdr = 0x69;
444 u8 DIV = 0; /* 8bit */
445 u8 XDRV = 0; /* 8bit */
446 u8 PUMP = 0; /* 3bit */
447 u8 PBmsb = 0; /* 2bit */
448 u8 PBlsb = 0; /* 8bit */
449 u8 PO = 0; /* 1bit */
450 u8 Q = 0; /* 7bit */
451 /* 24bit = 3bytes */
452 unsigned int P = 0;
453 unsigned int P2 = 0;
454 int frq = (int)dwFrq;
455
456 dbg("%s - enter", __func__);
457
458 if (frq == 0) {
459 priv->buf[Count++] = IUU_UART_WRITE_I2C;
460 priv->buf[Count++] = FrqGenAdr << 1;
461 priv->buf[Count++] = 0x09;
462 priv->buf[Count++] = 0x00;
463
464 status = bulk_immediate(port, (u8 *) priv->buf, Count);
465 if (status != 0) {
466 dbg("%s - write error ", __func__);
467 return status;
468 }
469 } else if (frq == 3579000) {
470 DIV = 100;
471 P = 1193;
472 Q = 40;
473 XDRV = 0;
474 } else if (frq == 3680000) {
475 DIV = 105;
476 P = 161;
477 Q = 5;
478 XDRV = 0;
479 } else if (frq == 6000000) {
480 DIV = 66;
481 P = 66;
482 Q = 2;
483 XDRV = 0x28;
484 } else {
485 unsigned int result = 0;
486 unsigned int tmp = 0;
487 unsigned int check;
488 unsigned int check2;
489 char found = 0x00;
490 unsigned int lQ = 2;
491 unsigned int lP = 2055;
492 unsigned int lDiv = 4;
493
494 for (lQ = 2; lQ <= 47 && !found; lQ++)
495 for (lP = 2055; lP >= 8 && !found; lP--)
496 for (lDiv = 4; lDiv <= 127 && !found; lDiv++) {
497 tmp = (12000000 / lDiv) * (lP / lQ);
498 if (abs((int)(tmp - frq)) <
499 abs((int)(frq - result))) {
500 check2 = (12000000 / lQ);
501 if (check2 < 250000)
502 continue;
503 check = (12000000 / lQ) * lP;
504 if (check > 400000000)
505 continue;
506 if (check < 100000000)
507 continue;
508 if (lDiv < 4 || lDiv > 127)
509 continue;
510 result = tmp;
511 P = lP;
512 DIV = lDiv;
513 Q = lQ;
514 if (result == frq)
515 found = 0x01;
516 }
517 }
518 }
519 P2 = ((P - PO) / 2) - 4;
520 DIV = DIV;
521 PUMP = 0x04;
522 PBmsb = (P2 >> 8 & 0x03);
523 PBlsb = P2 & 0xFF;
524 PO = (P >> 10) & 0x01;
525 Q = Q - 2;
526
527 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
528 priv->buf[Count++] = FrqGenAdr << 1;
529 priv->buf[Count++] = 0x09;
530 priv->buf[Count++] = 0x20; /* Adr = 0x09 */
531 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
532 priv->buf[Count++] = FrqGenAdr << 1;
533 priv->buf[Count++] = 0x0C;
534 priv->buf[Count++] = DIV; /* Adr = 0x0C */
535 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
536 priv->buf[Count++] = FrqGenAdr << 1;
537 priv->buf[Count++] = 0x12;
538 priv->buf[Count++] = XDRV; /* Adr = 0x12 */
539 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
540 priv->buf[Count++] = FrqGenAdr << 1;
541 priv->buf[Count++] = 0x13;
542 priv->buf[Count++] = 0x6B; /* Adr = 0x13 */
543 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
544 priv->buf[Count++] = FrqGenAdr << 1;
545 priv->buf[Count++] = 0x40;
546 priv->buf[Count++] = (0xC0 | ((PUMP & 0x07) << 2)) |
547 (PBmsb & 0x03); /* Adr = 0x40 */
548 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
549 priv->buf[Count++] = FrqGenAdr << 1;
550 priv->buf[Count++] = 0x41;
551 priv->buf[Count++] = PBlsb; /* Adr = 0x41 */
552 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
553 priv->buf[Count++] = FrqGenAdr << 1;
554 priv->buf[Count++] = 0x42;
555 priv->buf[Count++] = Q | (((PO & 0x01) << 7)); /* Adr = 0x42 */
556 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
557 priv->buf[Count++] = FrqGenAdr << 1;
558 priv->buf[Count++] = 0x44;
559 priv->buf[Count++] = (char)0xFF; /* Adr = 0x44 */
560 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
561 priv->buf[Count++] = FrqGenAdr << 1;
562 priv->buf[Count++] = 0x45;
563 priv->buf[Count++] = (char)0xFE; /* Adr = 0x45 */
564 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
565 priv->buf[Count++] = FrqGenAdr << 1;
566 priv->buf[Count++] = 0x46;
567 priv->buf[Count++] = 0x7F; /* Adr = 0x46 */
568 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
569 priv->buf[Count++] = FrqGenAdr << 1;
570 priv->buf[Count++] = 0x47;
571 priv->buf[Count++] = (char)0x84; /* Adr = 0x47 */
572
573 status = bulk_immediate(port, (u8 *) priv->buf, Count);
574 if (status != IUU_OPERATION_OK)
575 dbg("%s - write error ", __func__);
576 return status;
577 }
578
579 static int iuu_uart_flush(struct usb_serial_port *port)
580 {
581 int i;
582 int status;
583 u8 rxcmd = IUU_UART_RX;
584 struct iuu_private *priv = usb_get_serial_port_data(port);
585
586 dbg("%s - enter", __func__);
587
588 if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0)
589 return -EIO;
590
591 for (i = 0; i < 2; i++) {
592 status = bulk_immediate(port, &rxcmd, 1);
593 if (status != IUU_OPERATION_OK) {
594 dbg("%s - uart_flush_write error", __func__);
595 return status;
596 }
597
598 status = read_immediate(port, &priv->len, 1);
599 if (status != IUU_OPERATION_OK) {
600 dbg("%s - uart_flush_read error", __func__);
601 return status;
602 }
603
604 if (priv->len > 0) {
605 dbg("%s - uart_flush datalen is : %i ", __func__,
606 priv->len);
607 status = read_immediate(port, priv->buf, priv->len);
608 if (status != IUU_OPERATION_OK) {
609 dbg("%s - uart_flush_read error", __func__);
610 return status;
611 }
612 }
613 }
614 dbg("%s - uart_flush_read OK!", __func__);
615 iuu_led(port, 0, 0xF000, 0, 0xFF);
616 return status;
617 }
618
619 static void read_buf_callback(struct urb *urb)
620 {
621 struct usb_serial_port *port = urb->context;
622 unsigned char *data = urb->transfer_buffer;
623 struct tty_struct *tty;
624 int status = urb->status;
625
626 dbg("%s - status = %d", __func__, status);
627
628 if (status) {
629 if (status == -EPROTO) {
630 /* reschedule needed */
631 }
632 return;
633 }
634
635 dbg("%s - %i chars to write", __func__, urb->actual_length);
636 tty = tty_port_tty_get(&port->port);
637 if (data == NULL)
638 dbg("%s - data is NULL !!!", __func__);
639 if (tty && urb->actual_length && data) {
640 tty_insert_flip_string(tty, data, urb->actual_length);
641 tty_flip_buffer_push(tty);
642 }
643 tty_kref_put(tty);
644 iuu_led_activity_on(urb);
645 }
646
647 static int iuu_bulk_write(struct usb_serial_port *port)
648 {
649 struct iuu_private *priv = usb_get_serial_port_data(port);
650 unsigned long flags;
651 int result;
652 int i;
653 char *buf_ptr = port->write_urb->transfer_buffer;
654 dbg("%s - enter", __func__);
655
656 *buf_ptr++ = IUU_UART_ESC;
657 *buf_ptr++ = IUU_UART_TX;
658 *buf_ptr++ = priv->writelen;
659
660 memcpy(buf_ptr, priv->writebuf,
661 priv->writelen);
662 if (debug == 1) {
663 for (i = 0; i < priv->writelen; i++)
664 sprintf(priv->dbgbuf + i*2 ,
665 "%02X", priv->writebuf[i]);
666 priv->dbgbuf[priv->writelen+i*2] = 0;
667 dbg("%s - writing %i chars : %s", __func__,
668 priv->writelen, priv->dbgbuf);
669 }
670 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
671 usb_sndbulkpipe(port->serial->dev,
672 port->bulk_out_endpointAddress),
673 port->write_urb->transfer_buffer, priv->writelen + 3,
674 iuu_rxcmd, port);
675 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
676 spin_lock_irqsave(&priv->lock, flags);
677 priv->writelen = 0;
678 spin_unlock_irqrestore(&priv->lock, flags);
679 usb_serial_port_softint(port);
680 return result;
681 }
682
683 static int iuu_read_buf(struct usb_serial_port *port, int len)
684 {
685 int result;
686 dbg("%s - enter", __func__);
687
688 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
689 usb_rcvbulkpipe(port->serial->dev,
690 port->bulk_in_endpointAddress),
691 port->read_urb->transfer_buffer, len,
692 read_buf_callback, port);
693 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
694 return result;
695 }
696
697 static void iuu_uart_read_callback(struct urb *urb)
698 {
699 struct usb_serial_port *port = urb->context;
700 struct iuu_private *priv = usb_get_serial_port_data(port);
701 unsigned long flags;
702 int status = urb->status;
703 int error = 0;
704 int len = 0;
705 unsigned char *data = urb->transfer_buffer;
706 priv->poll++;
707
708 dbg("%s - enter", __func__);
709
710 if (status) {
711 dbg("%s - status = %d", __func__, status);
712 /* error stop all */
713 return;
714 }
715 if (data == NULL)
716 dbg("%s - data is NULL !!!", __func__);
717
718 if (urb->actual_length == 1 && data != NULL)
719 len = (int) data[0];
720
721 if (urb->actual_length > 1) {
722 dbg("%s - urb->actual_length = %i", __func__,
723 urb->actual_length);
724 error = 1;
725 return;
726 }
727 /* if len > 0 call readbuf */
728
729 if (len > 0 && error == 0) {
730 dbg("%s - call read buf - len to read is %i ",
731 __func__, len);
732 status = iuu_read_buf(port, len);
733 return;
734 }
735 /* need to update status ? */
736 if (priv->poll > 99) {
737 status = iuu_status(port);
738 priv->poll = 0;
739 return;
740 }
741
742 /* reset waiting ? */
743
744 if (priv->reset == 1) {
745 status = iuu_reset(port, 0xC);
746 return;
747 }
748 /* Writebuf is waiting */
749 spin_lock_irqsave(&priv->lock, flags);
750 if (priv->writelen > 0) {
751 spin_unlock_irqrestore(&priv->lock, flags);
752 status = iuu_bulk_write(port);
753 return;
754 }
755 spin_unlock_irqrestore(&priv->lock, flags);
756 /* if nothing to write call again rxcmd */
757 dbg("%s - rxcmd recall", __func__);
758 iuu_led_activity_off(urb);
759 }
760
761 static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port,
762 const u8 *buf, int count)
763 {
764 struct iuu_private *priv = usb_get_serial_port_data(port);
765 unsigned long flags;
766 dbg("%s - enter", __func__);
767
768 if (count > 256)
769 return -ENOMEM;
770
771 spin_lock_irqsave(&priv->lock, flags);
772 if (priv->writelen > 0) {
773 /* buffer already filled but not commited */
774 spin_unlock_irqrestore(&priv->lock, flags);
775 return 0;
776 }
777 /* fill the buffer */
778 memcpy(priv->writebuf, buf, count);
779 priv->writelen = count;
780 spin_unlock_irqrestore(&priv->lock, flags);
781
782 return count;
783 }
784
785 static void read_rxcmd_callback(struct urb *urb)
786 {
787 struct usb_serial_port *port = urb->context;
788 int result;
789 int status = urb->status;
790
791 dbg("%s - status = %d", __func__, status);
792
793 if (status) {
794 /* error stop all */
795 return;
796 }
797
798 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
799 usb_rcvbulkpipe(port->serial->dev,
800 port->bulk_in_endpointAddress),
801 port->read_urb->transfer_buffer, 256,
802 iuu_uart_read_callback, port);
803 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
804 dbg("%s - submit result = %d", __func__, result);
805 return;
806 }
807
808 static int iuu_uart_on(struct usb_serial_port *port)
809 {
810 int status;
811 u8 *buf;
812
813 buf = kmalloc(sizeof(u8) * 4, GFP_KERNEL);
814
815 if (!buf)
816 return -ENOMEM;
817
818 buf[0] = IUU_UART_ENABLE;
819 buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF);
820 buf[2] = (u8) (0x00FF & IUU_BAUD_9600);
821 buf[3] = (u8) (0x0F0 & IUU_TWO_STOP_BITS) | (0x07 & IUU_PARITY_EVEN);
822
823 status = bulk_immediate(port, buf, 4);
824 if (status != IUU_OPERATION_OK) {
825 dbg("%s - uart_on error", __func__);
826 goto uart_enable_failed;
827 }
828 /* iuu_reset() the card after iuu_uart_on() */
829 status = iuu_uart_flush(port);
830 if (status != IUU_OPERATION_OK)
831 dbg("%s - uart_flush error", __func__);
832 uart_enable_failed:
833 kfree(buf);
834 return status;
835 }
836
837 /* Diables the IUU UART (a.k.a. the Phoenix voiderface) */
838 static int iuu_uart_off(struct usb_serial_port *port)
839 {
840 int status;
841 u8 *buf;
842 buf = kmalloc(1, GFP_KERNEL);
843 if (!buf)
844 return -ENOMEM;
845 buf[0] = IUU_UART_DISABLE;
846
847 status = bulk_immediate(port, buf, 1);
848 if (status != IUU_OPERATION_OK)
849 dbg("%s - uart_off error", __func__);
850
851 kfree(buf);
852 return status;
853 }
854
855 static int iuu_uart_baud(struct usb_serial_port *port, u32 baud,
856 u32 *actual, u8 parity)
857 {
858 int status;
859 u8 *dataout;
860 u8 DataCount = 0;
861 u8 T1Frekvens = 0;
862 u8 T1reload = 0;
863 unsigned int T1FrekvensHZ = 0;
864
865 dataout = kmalloc(sizeof(u8) * 5, GFP_KERNEL);
866
867 if (!dataout)
868 return -ENOMEM;
869
870 if (baud < 1200 || baud > 230400) {
871 kfree(dataout);
872 return IUU_INVALID_PARAMETER;
873 }
874 if (baud > 977) {
875 T1Frekvens = 3;
876 T1FrekvensHZ = 500000;
877 }
878
879 if (baud > 3906) {
880 T1Frekvens = 2;
881 T1FrekvensHZ = 2000000;
882 }
883
884 if (baud > 11718) {
885 T1Frekvens = 1;
886 T1FrekvensHZ = 6000000;
887 }
888
889 if (baud > 46875) {
890 T1Frekvens = 0;
891 T1FrekvensHZ = 24000000;
892 }
893
894 T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2));
895
896 /* magic number here: ENTER_FIRMWARE_UPDATE; */
897 dataout[DataCount++] = IUU_UART_ESC;
898 /* magic number here: CHANGE_BAUD; */
899 dataout[DataCount++] = IUU_UART_CHANGE;
900 dataout[DataCount++] = T1Frekvens;
901 dataout[DataCount++] = T1reload;
902
903 *actual = (T1FrekvensHZ / (256 - T1reload)) / 2;
904
905 switch (parity & 0x0F) {
906 case IUU_PARITY_NONE:
907 dataout[DataCount++] = 0x00;
908 break;
909 case IUU_PARITY_EVEN:
910 dataout[DataCount++] = 0x01;
911 break;
912 case IUU_PARITY_ODD:
913 dataout[DataCount++] = 0x02;
914 break;
915 case IUU_PARITY_MARK:
916 dataout[DataCount++] = 0x03;
917 break;
918 case IUU_PARITY_SPACE:
919 dataout[DataCount++] = 0x04;
920 break;
921 default:
922 kfree(dataout);
923 return IUU_INVALID_PARAMETER;
924 break;
925 }
926
927 switch (parity & 0xF0) {
928 case IUU_ONE_STOP_BIT:
929 dataout[DataCount - 1] |= IUU_ONE_STOP_BIT;
930 break;
931
932 case IUU_TWO_STOP_BITS:
933 dataout[DataCount - 1] |= IUU_TWO_STOP_BITS;
934 break;
935 default:
936 kfree(dataout);
937 return IUU_INVALID_PARAMETER;
938 break;
939 }
940
941 status = bulk_immediate(port, dataout, DataCount);
942 if (status != IUU_OPERATION_OK)
943 dbg("%s - uart_off error", __func__);
944 kfree(dataout);
945 return status;
946 }
947
948 static void iuu_close(struct usb_serial_port *port)
949 {
950 /* iuu_led (port,255,0,0,0); */
951 struct usb_serial *serial;
952
953 serial = port->serial;
954 if (!serial)
955 return;
956
957 dbg("%s - port %d", __func__, port->number);
958
959 iuu_uart_off(port);
960 if (serial->dev) {
961 /* free writebuf */
962 /* shutdown our urbs */
963 dbg("%s - shutting down urbs", __func__);
964 usb_kill_urb(port->write_urb);
965 usb_kill_urb(port->read_urb);
966 usb_kill_urb(port->interrupt_in_urb);
967 msleep(1000);
968 /* wait one second to free all buffers */
969 iuu_led(port, 0, 0, 0xF000, 0xFF);
970 msleep(1000);
971 usb_reset_device(port->serial->dev);
972 }
973 }
974
975 static int iuu_open(struct tty_struct *tty,
976 struct usb_serial_port *port, struct file *filp)
977 {
978 struct usb_serial *serial = port->serial;
979 u8 *buf;
980 int result;
981 u32 actual;
982 unsigned long flags;
983 struct iuu_private *priv = usb_get_serial_port_data(port);
984
985 dbg("%s - port %d", __func__, port->number);
986 usb_clear_halt(serial->dev, port->write_urb->pipe);
987 usb_clear_halt(serial->dev, port->read_urb->pipe);
988
989 buf = kmalloc(10, GFP_KERNEL);
990 if (buf == NULL)
991 return -ENOMEM;
992
993 /* fixup the endpoint buffer size */
994 kfree(port->bulk_out_buffer);
995 port->bulk_out_buffer = kmalloc(512, GFP_KERNEL);
996 port->bulk_out_size = 512;
997 kfree(port->bulk_in_buffer);
998 port->bulk_in_buffer = kmalloc(512, GFP_KERNEL);
999 port->bulk_in_size = 512;
1000
1001 if (!port->bulk_out_buffer || !port->bulk_in_buffer) {
1002 kfree(port->bulk_out_buffer);
1003 kfree(port->bulk_in_buffer);
1004 kfree(buf);
1005 return -ENOMEM;
1006 }
1007
1008 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1009 usb_sndbulkpipe(port->serial->dev,
1010 port->bulk_out_endpointAddress),
1011 port->bulk_out_buffer, 512,
1012 NULL, NULL);
1013
1014
1015 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
1016 usb_rcvbulkpipe(port->serial->dev,
1017 port->bulk_in_endpointAddress),
1018 port->bulk_in_buffer, 512,
1019 NULL, NULL);
1020
1021 /* set the termios structure */
1022 spin_lock_irqsave(&priv->lock, flags);
1023 if (tty && !priv->termios_initialized) {
1024 *(tty->termios) = tty_std_termios;
1025 tty->termios->c_cflag = CLOCAL | CREAD | CS8 | B9600
1026 | TIOCM_CTS | CSTOPB | PARENB;
1027 tty->termios->c_ispeed = 9600;
1028 tty->termios->c_ospeed = 9600;
1029 tty->termios->c_lflag = 0;
1030 tty->termios->c_oflag = 0;
1031 tty->termios->c_iflag = 0;
1032 priv->termios_initialized = 1;
1033 priv->poll = 0;
1034 }
1035 spin_unlock_irqrestore(&priv->lock, flags);
1036
1037 /* initialize writebuf */
1038 #define FISH(a, b, c, d) do { \
1039 result = usb_control_msg(port->serial->dev, \
1040 usb_rcvctrlpipe(port->serial->dev, 0), \
1041 b, a, c, d, buf, 1, 1000); \
1042 dbg("0x%x:0x%x:0x%x:0x%x %d - %x", a, b, c, d, result, \
1043 buf[0]); } while (0);
1044
1045 #define SOUP(a, b, c, d) do { \
1046 result = usb_control_msg(port->serial->dev, \
1047 usb_sndctrlpipe(port->serial->dev, 0), \
1048 b, a, c, d, NULL, 0, 1000); \
1049 dbg("0x%x:0x%x:0x%x:0x%x %d", a, b, c, d, result); } while (0)
1050
1051 /* This is not UART related but IUU USB driver related or something */
1052 /* like that. Basically no IUU will accept any commands from the USB */
1053 /* host unless it has received the following message */
1054 /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */
1055
1056 SOUP(0x03, 0x02, 0x02, 0x0);
1057 kfree(buf);
1058 iuu_led(port, 0xF000, 0xF000, 0, 0xFF);
1059 iuu_uart_on(port);
1060 if (boost < 100)
1061 boost = 100;
1062 switch (clockmode) {
1063 case 2: /* 3.680 Mhz */
1064 iuu_clk(port, IUU_CLK_3680000 * boost / 100);
1065 result =
1066 iuu_uart_baud(port, 9600 * boost / 100, &actual,
1067 IUU_PARITY_EVEN);
1068 break;
1069 case 3: /* 6.00 Mhz */
1070 iuu_clk(port, IUU_CLK_6000000 * boost / 100);
1071 result =
1072 iuu_uart_baud(port, 16457 * boost / 100, &actual,
1073 IUU_PARITY_EVEN);
1074 break;
1075 default: /* 3.579 Mhz */
1076 iuu_clk(port, IUU_CLK_3579000 * boost / 100);
1077 result =
1078 iuu_uart_baud(port, 9600 * boost / 100, &actual,
1079 IUU_PARITY_EVEN);
1080 }
1081
1082 /* set the cardin cardout signals */
1083 switch (cdmode) {
1084 case 0:
1085 iuu_cardin = 0;
1086 iuu_cardout = 0;
1087 break;
1088 case 1:
1089 iuu_cardin = TIOCM_CD;
1090 iuu_cardout = 0;
1091 break;
1092 case 2:
1093 iuu_cardin = 0;
1094 iuu_cardout = TIOCM_CD;
1095 break;
1096 case 3:
1097 iuu_cardin = TIOCM_DSR;
1098 iuu_cardout = 0;
1099 break;
1100 case 4:
1101 iuu_cardin = 0;
1102 iuu_cardout = TIOCM_DSR;
1103 break;
1104 case 5:
1105 iuu_cardin = TIOCM_CTS;
1106 iuu_cardout = 0;
1107 break;
1108 case 6:
1109 iuu_cardin = 0;
1110 iuu_cardout = TIOCM_CTS;
1111 break;
1112 case 7:
1113 iuu_cardin = TIOCM_RNG;
1114 iuu_cardout = 0;
1115 break;
1116 case 8:
1117 iuu_cardin = 0;
1118 iuu_cardout = TIOCM_RNG;
1119 }
1120
1121 iuu_uart_flush(port);
1122
1123 dbg("%s - initialization done", __func__);
1124
1125 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
1126 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1127 usb_sndbulkpipe(port->serial->dev,
1128 port->bulk_out_endpointAddress),
1129 port->write_urb->transfer_buffer, 1,
1130 read_rxcmd_callback, port);
1131 result = usb_submit_urb(port->write_urb, GFP_KERNEL);
1132
1133 if (result) {
1134 dev_err(&port->dev, "%s - failed submitting read urb,"
1135 " error %d\n", __func__, result);
1136 iuu_close(port);
1137 return -EPROTO;
1138 } else {
1139 dbg("%s - rxcmd OK", __func__);
1140 }
1141 return result;
1142 }
1143
1144 static struct usb_serial_driver iuu_device = {
1145 .driver = {
1146 .owner = THIS_MODULE,
1147 .name = "iuu_phoenix",
1148 },
1149 .id_table = id_table,
1150 .num_ports = 1,
1151 .open = iuu_open,
1152 .close = iuu_close,
1153 .write = iuu_uart_write,
1154 .read_bulk_callback = iuu_uart_read_callback,
1155 .tiocmget = iuu_tiocmget,
1156 .tiocmset = iuu_tiocmset,
1157 .attach = iuu_startup,
1158 .shutdown = iuu_shutdown,
1159 };
1160
1161 static int __init iuu_init(void)
1162 {
1163 int retval;
1164 retval = usb_serial_register(&iuu_device);
1165 if (retval)
1166 goto failed_usb_serial_register;
1167 retval = usb_register(&iuu_driver);
1168 if (retval)
1169 goto failed_usb_register;
1170 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
1171 DRIVER_DESC "\n");
1172 return 0;
1173 failed_usb_register:
1174 usb_serial_deregister(&iuu_device);
1175 failed_usb_serial_register:
1176 return retval;
1177 }
1178
1179 static void __exit iuu_exit(void)
1180 {
1181 usb_deregister(&iuu_driver);
1182 usb_serial_deregister(&iuu_device);
1183 }
1184
1185 module_init(iuu_init);
1186 module_exit(iuu_exit);
1187
1188 MODULE_AUTHOR("Alain Degreffe eczema@ecze.com");
1189
1190 MODULE_DESCRIPTION(DRIVER_DESC);
1191 MODULE_LICENSE("GPL");
1192
1193 MODULE_VERSION(DRIVER_VERSION);
1194 module_param(debug, bool, S_IRUGO | S_IWUSR);
1195 MODULE_PARM_DESC(debug, "Debug enabled or not");
1196
1197 module_param(xmas, bool, S_IRUGO | S_IWUSR);
1198 MODULE_PARM_DESC(xmas, "xmas color enabled or not");
1199
1200 module_param(boost, int, S_IRUGO | S_IWUSR);
1201 MODULE_PARM_DESC(boost, "overclock boost percent 100 to 500");
1202
1203 module_param(clockmode, int, S_IRUGO | S_IWUSR);
1204 MODULE_PARM_DESC(clockmode, "1=3Mhz579,2=3Mhz680,3=6Mhz");
1205
1206 module_param(cdmode, int, S_IRUGO | S_IWUSR);
1207 MODULE_PARM_DESC(cdmode, "Card detect mode 0=none, 1=CD, 2=!CD, 3=DSR, "
1208 "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING");
kernel-based virtual machine