Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg...
[linux-2.6] / 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 usb_serial_port *port, struct file *file,
148                         unsigned int set, unsigned int clear)
149 {
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 usb_serial_port *port, struct file *file)
175 {
176         struct iuu_private *priv = usb_get_serial_port_data(port);
177         unsigned long flags;
178         int rc;
179
180         spin_lock_irqsave(&priv->lock, flags);
181         rc = priv->tiostatus;
182         spin_unlock_irqrestore(&priv->lock, flags);
183
184         return rc;
185 }
186
187 static void iuu_rxcmd(struct urb *urb)
188 {
189         struct usb_serial_port *port = urb->context;
190         int result;
191         dbg("%s - enter", __func__);
192
193         if (urb->status) {
194                 dbg("%s - urb->status = %d", __func__, urb->status);
195                 /* error stop all */
196                 return;
197         }
198
199
200         memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
201         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
202                           usb_sndbulkpipe(port->serial->dev,
203                                           port->bulk_out_endpointAddress),
204                           port->write_urb->transfer_buffer, 1,
205                           read_rxcmd_callback, port);
206         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
207 }
208
209 static int iuu_reset(struct usb_serial_port *port, u8 wt)
210 {
211         struct iuu_private *priv = usb_get_serial_port_data(port);
212         int result;
213         char *buf_ptr = port->write_urb->transfer_buffer;
214         dbg("%s - enter", __func__);
215
216         /* Prepare the reset sequence */
217
218         *buf_ptr++ = IUU_RST_SET;
219         *buf_ptr++ = IUU_DELAY_MS;
220         *buf_ptr++ = wt;
221         *buf_ptr = IUU_RST_CLEAR;
222
223         /* send the sequence */
224
225         usb_fill_bulk_urb(port->write_urb,
226                           port->serial->dev,
227                           usb_sndbulkpipe(port->serial->dev,
228                                           port->bulk_out_endpointAddress),
229                           port->write_urb->transfer_buffer, 4, iuu_rxcmd, port);
230         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
231         priv->reset = 0;
232         return result;
233 }
234
235 /* Status Function
236  * Return value is
237  * 0x00 = no card
238  * 0x01 = smartcard
239  * 0x02 = sim card
240  */
241 static void iuu_update_status_callback(struct urb *urb)
242 {
243         struct usb_serial_port *port = urb->context;
244         struct iuu_private *priv = usb_get_serial_port_data(port);
245         u8 *st;
246         dbg("%s - enter", __func__);
247
248         if (urb->status) {
249                 dbg("%s - urb->status = %d", __func__, urb->status);
250                 /* error stop all */
251                 return;
252         }
253
254         st = urb->transfer_buffer;
255         dbg("%s - enter", __func__);
256         if (urb->actual_length == 1) {
257                 switch (st[0]) {
258                 case 0x1:
259                         priv->tiostatus = iuu_cardout;
260                         break;
261                 case 0x0:
262                         priv->tiostatus = iuu_cardin;
263                         break;
264                 default:
265                         priv->tiostatus = iuu_cardin;
266                 }
267         }
268         iuu_rxcmd(urb);
269 }
270
271 static void iuu_status_callback(struct urb *urb)
272 {
273         struct usb_serial_port *port = urb->context;
274         int result;
275         dbg("%s - enter", __func__);
276
277         dbg("%s - urb->status = %d", __func__, urb->status);
278         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
279                           usb_rcvbulkpipe(port->serial->dev,
280                                           port->bulk_in_endpointAddress),
281                           port->read_urb->transfer_buffer, 256,
282                           iuu_update_status_callback, port);
283         result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
284 }
285
286 static int iuu_status(struct usb_serial_port *port)
287 {
288         int result;
289
290         dbg("%s - enter", __func__);
291
292         memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1);
293         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
294                           usb_sndbulkpipe(port->serial->dev,
295                                           port->bulk_out_endpointAddress),
296                           port->write_urb->transfer_buffer, 1,
297                           iuu_status_callback, port);
298         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
299         return result;
300
301 }
302
303 static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
304 {
305         int status;
306         struct usb_serial *serial = port->serial;
307         int actual = 0;
308
309         dbg("%s - enter", __func__);
310
311         /* send the data out the bulk port */
312
313         status =
314             usb_bulk_msg(serial->dev,
315                          usb_sndbulkpipe(serial->dev,
316                                          port->bulk_out_endpointAddress), buf,
317                          count, &actual, HZ * 1);
318
319         if (status != IUU_OPERATION_OK) {
320                 dbg("%s - error = %2x", __func__, status);
321         } else {
322                 dbg("%s - write OK !", __func__);
323         }
324         return status;
325 }
326
327 static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
328 {
329         int status;
330         struct usb_serial *serial = port->serial;
331         int actual = 0;
332
333         dbg("%s - enter", __func__);
334
335         /* send the data out the bulk port */
336
337         status =
338             usb_bulk_msg(serial->dev,
339                          usb_rcvbulkpipe(serial->dev,
340                                          port->bulk_in_endpointAddress), buf,
341                          count, &actual, HZ * 1);
342
343         if (status != IUU_OPERATION_OK) {
344                 dbg("%s - error = %2x", __func__, status);
345         } else {
346                 dbg("%s - read OK !", __func__);
347         }
348
349         return status;
350 }
351
352 static int iuu_led(struct usb_serial_port *port, unsigned int R,
353                    unsigned int G, unsigned int B, u8 f)
354 {
355         int status;
356         u8 *buf;
357         buf = kmalloc(8, GFP_KERNEL);
358         if (!buf)
359                 return -ENOMEM;
360
361         dbg("%s - enter", __func__);
362
363         buf[0] = IUU_SET_LED;
364         buf[1] = R & 0xFF;
365         buf[2] = (R >> 8) & 0xFF;
366         buf[3] = G & 0xFF;
367         buf[4] = (G >> 8) & 0xFF;
368         buf[5] = B & 0xFF;
369         buf[6] = (B >> 8) & 0xFF;
370         buf[7] = f;
371         status = bulk_immediate(port, buf, 8);
372         kfree(buf);
373         if (status != IUU_OPERATION_OK)
374                 dbg("%s - led error status = %2x", __func__, status);
375         else
376                 dbg("%s - led OK !", __func__);
377         return IUU_OPERATION_OK;
378 }
379
380 static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1,
381                                  u8 b2, u8 freq)
382 {
383         *buf++ = IUU_SET_LED;
384         *buf++ = r1;
385         *buf++ = r2;
386         *buf++ = g1;
387         *buf++ = g2;
388         *buf++ = b1;
389         *buf++ = b2;
390         *buf = freq;
391 }
392
393 static void iuu_led_activity_on(struct urb *urb)
394 {
395         struct usb_serial_port *port = urb->context;
396         int result;
397         char *buf_ptr = port->write_urb->transfer_buffer;
398         *buf_ptr++ = IUU_SET_LED;
399         if (xmas == 1) {
400                 get_random_bytes(buf_ptr, 6);
401                 *(buf_ptr+7) = 1;
402         } else {
403                 iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255);
404         }
405
406         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
407                           usb_sndbulkpipe(port->serial->dev,
408                                           port->bulk_out_endpointAddress),
409                           port->write_urb->transfer_buffer, 8 ,
410                           iuu_rxcmd, port);
411         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
412 }
413
414 static void iuu_led_activity_off(struct urb *urb)
415 {
416         struct usb_serial_port *port = urb->context;
417         int result;
418         char *buf_ptr = port->write_urb->transfer_buffer;
419         if (xmas == 1) {
420                 iuu_rxcmd(urb);
421                 return;
422         } else {
423                 *buf_ptr++ = IUU_SET_LED;
424                 iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255);
425         }
426         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
427                           usb_sndbulkpipe(port->serial->dev,
428                                           port->bulk_out_endpointAddress),
429                           port->write_urb->transfer_buffer, 8 ,
430                           iuu_rxcmd, port);
431         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
432 }
433
434
435
436 static int iuu_clk(struct usb_serial_port *port, int dwFrq)
437 {
438         int status;
439         struct iuu_private *priv = usb_get_serial_port_data(port);
440         int Count = 0;
441         u8 FrqGenAdr = 0x69;
442         u8 DIV = 0;             /* 8bit */
443         u8 XDRV = 0;            /* 8bit */
444         u8 PUMP = 0;            /* 3bit */
445         u8 PBmsb = 0;           /* 2bit */
446         u8 PBlsb = 0;           /* 8bit */
447         u8 PO = 0;              /* 1bit */
448         u8 Q = 0;               /* 7bit */
449         /* 24bit = 3bytes */
450         unsigned int P = 0;
451         unsigned int P2 = 0;
452         int frq = (int)dwFrq;
453
454         dbg("%s - enter", __func__);
455
456         if (frq == 0) {
457                 priv->buf[Count++] = IUU_UART_WRITE_I2C;
458                 priv->buf[Count++] = FrqGenAdr << 1;
459                 priv->buf[Count++] = 0x09;
460                 priv->buf[Count++] = 0x00;
461
462                 status = bulk_immediate(port, (u8 *) priv->buf, Count);
463                 if (status != 0) {
464                         dbg("%s - write error ", __func__);
465                         return status;
466                 }
467         } else if (frq == 3579000) {
468                 DIV = 100;
469                 P = 1193;
470                 Q = 40;
471                 XDRV = 0;
472         } else if (frq == 3680000) {
473                 DIV = 105;
474                 P = 161;
475                 Q = 5;
476                 XDRV = 0;
477         } else if (frq == 6000000) {
478                 DIV = 66;
479                 P = 66;
480                 Q = 2;
481                 XDRV = 0x28;
482         } else {
483                 unsigned int result = 0;
484                 unsigned int tmp = 0;
485                 unsigned int check;
486                 unsigned int check2;
487                 char found = 0x00;
488                 unsigned int lQ = 2;
489                 unsigned int lP = 2055;
490                 unsigned int lDiv = 4;
491
492                 for (lQ = 2; lQ <= 47 && !found; lQ++)
493                         for (lP = 2055; lP >= 8 && !found; lP--)
494                                 for (lDiv = 4; lDiv <= 127 && !found; lDiv++) {
495                                         tmp = (12000000 / lDiv) * (lP / lQ);
496                                         if (abs((int)(tmp - frq)) <
497                                             abs((int)(frq - result))) {
498                                                 check2 = (12000000 / lQ);
499                                                 if (check2 < 250000)
500                                                         continue;
501                                                 check = (12000000 / lQ) * lP;
502                                                 if (check > 400000000)
503                                                         continue;
504                                                 if (check < 100000000)
505                                                         continue;
506                                                 if (lDiv < 4 || lDiv > 127)
507                                                         continue;
508                                                 result = tmp;
509                                                 P = lP;
510                                                 DIV = lDiv;
511                                                 Q = lQ;
512                                                 if (result == frq)
513                                                         found = 0x01;
514                                         }
515                                 }
516         }
517         P2 = ((P - PO) / 2) - 4;
518         DIV = DIV;
519         PUMP = 0x04;
520         PBmsb = (P2 >> 8 & 0x03);
521         PBlsb = P2 & 0xFF;
522         PO = (P >> 10) & 0x01;
523         Q = Q - 2;
524
525         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /* 0x4C */
526         priv->buf[Count++] = FrqGenAdr << 1;
527         priv->buf[Count++] = 0x09;
528         priv->buf[Count++] = 0x20;      /* Adr = 0x09 */
529         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /* 0x4C */
530         priv->buf[Count++] = FrqGenAdr << 1;
531         priv->buf[Count++] = 0x0C;
532         priv->buf[Count++] = DIV;       /* Adr = 0x0C */
533         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /* 0x4C */
534         priv->buf[Count++] = FrqGenAdr << 1;
535         priv->buf[Count++] = 0x12;
536         priv->buf[Count++] = XDRV;      /* Adr = 0x12 */
537         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
538         priv->buf[Count++] = FrqGenAdr << 1;
539         priv->buf[Count++] = 0x13;
540         priv->buf[Count++] = 0x6B;      /* Adr = 0x13 */
541         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
542         priv->buf[Count++] = FrqGenAdr << 1;
543         priv->buf[Count++] = 0x40;
544         priv->buf[Count++] = (0xC0 | ((PUMP & 0x07) << 2)) |
545                              (PBmsb & 0x03);    /* Adr = 0x40 */
546         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
547         priv->buf[Count++] = FrqGenAdr << 1;
548         priv->buf[Count++] = 0x41;
549         priv->buf[Count++] = PBlsb;     /* Adr = 0x41 */
550         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
551         priv->buf[Count++] = FrqGenAdr << 1;
552         priv->buf[Count++] = 0x42;
553         priv->buf[Count++] = Q | (((PO & 0x01) << 7));  /* Adr = 0x42 */
554         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
555         priv->buf[Count++] = FrqGenAdr << 1;
556         priv->buf[Count++] = 0x44;
557         priv->buf[Count++] = (char)0xFF;        /* Adr = 0x44 */
558         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
559         priv->buf[Count++] = FrqGenAdr << 1;
560         priv->buf[Count++] = 0x45;
561         priv->buf[Count++] = (char)0xFE;        /* Adr = 0x45 */
562         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
563         priv->buf[Count++] = FrqGenAdr << 1;
564         priv->buf[Count++] = 0x46;
565         priv->buf[Count++] = 0x7F;      /* Adr = 0x46 */
566         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
567         priv->buf[Count++] = FrqGenAdr << 1;
568         priv->buf[Count++] = 0x47;
569         priv->buf[Count++] = (char)0x84;        /* Adr = 0x47 */
570
571         status = bulk_immediate(port, (u8 *) priv->buf, Count);
572         if (status != IUU_OPERATION_OK)
573                 dbg("%s - write error ", __func__);
574         return status;
575 }
576
577 static int iuu_uart_flush(struct usb_serial_port *port)
578 {
579         int i;
580         int status;
581         u8 rxcmd = IUU_UART_RX;
582         struct iuu_private *priv = usb_get_serial_port_data(port);
583
584         dbg("%s - enter", __func__);
585
586         if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0)
587                 return -EIO;
588
589         for (i = 0; i < 2; i++) {
590                 status = bulk_immediate(port, &rxcmd, 1);
591                 if (status != IUU_OPERATION_OK) {
592                         dbg("%s - uart_flush_write error", __func__);
593                         return status;
594                 }
595
596                 status = read_immediate(port, &priv->len, 1);
597                 if (status != IUU_OPERATION_OK) {
598                         dbg("%s - uart_flush_read error", __func__);
599                         return status;
600                 }
601
602                 if (priv->len > 0) {
603                         dbg("%s - uart_flush datalen is : %i ", __func__,
604                             priv->len);
605                         status = read_immediate(port, priv->buf, priv->len);
606                         if (status != IUU_OPERATION_OK) {
607                                 dbg("%s - uart_flush_read error", __func__);
608                                 return status;
609                         }
610                 }
611         }
612         dbg("%s - uart_flush_read OK!", __func__);
613         iuu_led(port, 0, 0xF000, 0, 0xFF);
614         return status;
615 }
616
617 static void read_buf_callback(struct urb *urb)
618 {
619         struct usb_serial_port *port = urb->context;
620         unsigned char *data = urb->transfer_buffer;
621         struct tty_struct *tty;
622         dbg("%s - urb->status = %d", __func__, urb->status);
623
624         if (urb->status) {
625                 dbg("%s - urb->status = %d", __func__, urb->status);
626                 if (urb->status == -EPROTO) {
627                         /* reschedule needed */
628                 }
629                 return;
630         }
631
632         dbg("%s - %i chars to write", __func__, urb->actual_length);
633         tty = port->tty;
634         if (data == NULL)
635                 dbg("%s - data is NULL !!!", __func__);
636         if (tty && urb->actual_length && data) {
637                 tty_insert_flip_string(tty, data, urb->actual_length);
638                 tty_flip_buffer_push(tty);
639         }
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 int 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 int 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         return;
756 }
757
758 static int iuu_uart_write(struct usb_serial_port *port, const u8 *buf,
759                           int count)
760 {
761         struct iuu_private *priv = usb_get_serial_port_data(port);
762         unsigned int flags;
763         dbg("%s - enter", __func__);
764
765         if (count > 256)
766                 return -ENOMEM;
767
768         spin_lock_irqsave(&priv->lock, flags);
769         if (priv->writelen > 0) {
770                 /* buffer already filled but not commited */
771                 spin_unlock_irqrestore(&priv->lock, flags);
772                 return (0);
773         }
774         /* fill the buffer */
775         memcpy(priv->writebuf, buf, count);
776         priv->writelen = count;
777         spin_unlock_irqrestore(&priv->lock, flags);
778
779         return (count);
780 }
781
782 static void read_rxcmd_callback(struct urb *urb)
783 {
784         struct usb_serial_port *port = urb->context;
785         int result;
786         dbg("%s - enter", __func__);
787
788         dbg("%s - urb->status = %d", __func__, urb->status);
789
790         if (urb->status) {
791                 dbg("%s - urb->status = %d", __func__, urb->status);
792                 /* error stop all */
793                 return;
794         }
795
796         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
797                           usb_rcvbulkpipe(port->serial->dev,
798                                           port->bulk_in_endpointAddress),
799                           port->read_urb->transfer_buffer, 256,
800                           iuu_uart_read_callback, port);
801         result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
802         dbg("%s - submit result = %d", __func__, result);
803         return;
804 }
805
806 static int iuu_uart_on(struct usb_serial_port *port)
807 {
808         int status;
809         u8 *buf;
810
811         buf = kmalloc(sizeof(u8) * 4, GFP_KERNEL);
812
813         if (!buf)
814                 return -ENOMEM;
815
816         buf[0] = IUU_UART_ENABLE;
817         buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF);
818         buf[2] = (u8) (0x00FF & IUU_BAUD_9600);
819         buf[3] = (u8) (0x0F0 & IUU_TWO_STOP_BITS) | (0x07 & IUU_PARITY_EVEN);
820
821         status = bulk_immediate(port, buf, 4);
822         if (status != IUU_OPERATION_OK) {
823                 dbg("%s - uart_on error", __func__);
824                 goto uart_enable_failed;
825         }
826         /*  iuu_reset() the card after iuu_uart_on() */
827         status = iuu_uart_flush(port);
828         if (status != IUU_OPERATION_OK)
829                 dbg("%s - uart_flush error", __func__);
830 uart_enable_failed:
831         kfree(buf);
832         return status;
833 }
834
835 /*  Diables the IUU UART (a.k.a. the Phoenix voiderface) */
836 static int iuu_uart_off(struct usb_serial_port *port)
837 {
838         int status;
839         u8 *buf;
840         buf = kmalloc(1, GFP_KERNEL);
841         if (!buf)
842                 return -ENOMEM;
843         buf[0] = IUU_UART_DISABLE;
844
845         status = bulk_immediate(port, buf, 1);
846         if (status != IUU_OPERATION_OK)
847                 dbg("%s - uart_off error", __func__);
848
849         kfree(buf);
850         return status;
851 }
852
853 static int iuu_uart_baud(struct usb_serial_port *port, u32 baud,
854                          u32 *actual, u8 parity)
855 {
856         int status;
857         u8 *dataout;
858         u8 DataCount = 0;
859         u8 T1Frekvens = 0;
860         u8 T1reload = 0;
861         unsigned int T1FrekvensHZ = 0;
862
863         dataout = kmalloc(sizeof(u8) * 5, GFP_KERNEL);
864
865         if (!dataout)
866                 return -ENOMEM;
867
868         if (baud < 1200 || baud > 230400) {
869                 kfree(dataout);
870                 return IUU_INVALID_PARAMETER;
871         }
872         if (baud > 977) {
873                 T1Frekvens = 3;
874                 T1FrekvensHZ = 500000;
875         }
876
877         if (baud > 3906) {
878                 T1Frekvens = 2;
879                 T1FrekvensHZ = 2000000;
880         }
881
882         if (baud > 11718) {
883                 T1Frekvens = 1;
884                 T1FrekvensHZ = 6000000;
885         }
886
887         if (baud > 46875) {
888                 T1Frekvens = 0;
889                 T1FrekvensHZ = 24000000;
890         }
891
892         T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2));
893
894         /*  magic number here:  ENTER_FIRMWARE_UPDATE; */
895         dataout[DataCount++] = IUU_UART_ESC;
896         /*  magic number here:  CHANGE_BAUD; */
897         dataout[DataCount++] = IUU_UART_CHANGE;
898         dataout[DataCount++] = T1Frekvens;
899         dataout[DataCount++] = T1reload;
900
901         *actual = (T1FrekvensHZ / (256 - T1reload)) / 2;
902
903         switch (parity & 0x0F) {
904         case IUU_PARITY_NONE:
905                 dataout[DataCount++] = 0x00;
906                 break;
907         case IUU_PARITY_EVEN:
908                 dataout[DataCount++] = 0x01;
909                 break;
910         case IUU_PARITY_ODD:
911                 dataout[DataCount++] = 0x02;
912                 break;
913         case IUU_PARITY_MARK:
914                 dataout[DataCount++] = 0x03;
915                 break;
916         case IUU_PARITY_SPACE:
917                 dataout[DataCount++] = 0x04;
918                 break;
919         default:
920                 kfree(dataout);
921                 return IUU_INVALID_PARAMETER;
922                 break;
923         }
924
925         switch (parity & 0xF0) {
926         case IUU_ONE_STOP_BIT:
927                 dataout[DataCount - 1] |= IUU_ONE_STOP_BIT;
928                 break;
929
930         case IUU_TWO_STOP_BITS:
931                 dataout[DataCount - 1] |= IUU_TWO_STOP_BITS;
932                 break;
933         default:
934                 kfree(dataout);
935                 return IUU_INVALID_PARAMETER;
936                 break;
937         }
938
939         status = bulk_immediate(port, dataout, DataCount);
940         if (status != IUU_OPERATION_OK)
941                 dbg("%s - uart_off error", __func__);
942         kfree(dataout);
943         return status;
944 }
945
946 static int set_control_lines(struct usb_device *dev, u8 value)
947 {
948         return 0;
949 }
950
951 static void iuu_close(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 (port->tty) {
968                         c_cflag = port->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 usb_serial_port *port, struct file *filp)
993 {
994         struct usb_serial *serial = port->serial;
995         u8 *buf;
996         int result;
997         u32 actual;
998         unsigned long flags;
999         struct iuu_private *priv = usb_get_serial_port_data(port);
1000
1001         dbg("%s -  port %d", __func__, port->number);
1002         usb_clear_halt(serial->dev, port->write_urb->pipe);
1003         usb_clear_halt(serial->dev, port->read_urb->pipe);
1004
1005         buf = kmalloc(10, GFP_KERNEL);
1006         if (buf == NULL)
1007                 return -ENOMEM;
1008
1009         /* fixup the endpoint buffer size */
1010         kfree(port->bulk_out_buffer);
1011         port->bulk_out_buffer = kmalloc(512, GFP_KERNEL);
1012         port->bulk_out_size = 512;
1013         kfree(port->bulk_in_buffer);
1014         port->bulk_in_buffer = kmalloc(512, GFP_KERNEL);
1015         port->bulk_in_size = 512;
1016
1017         if (!port->bulk_out_buffer || !port->bulk_in_buffer) {
1018                 kfree(port->bulk_out_buffer);
1019                 kfree(port->bulk_in_buffer);
1020                 kfree(buf);
1021                 return -ENOMEM;
1022         }
1023
1024         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1025                           usb_sndbulkpipe(port->serial->dev,
1026                                           port->bulk_out_endpointAddress),
1027                           port->bulk_out_buffer, 512,
1028                           NULL, NULL);
1029
1030
1031         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
1032                           usb_rcvbulkpipe(port->serial->dev,
1033                                           port->bulk_in_endpointAddress),
1034                           port->bulk_in_buffer, 512,
1035                           NULL, NULL);
1036
1037         /* set the termios structure */
1038         spin_lock_irqsave(&priv->lock, flags);
1039         if (!priv->termios_initialized) {
1040                 *(port->tty->termios) = tty_std_termios;
1041                 port->tty->termios->c_cflag = CLOCAL | CREAD | CS8 | B9600
1042                                                 | TIOCM_CTS | CSTOPB | PARENB;
1043                 port->tty->termios->c_lflag = 0;
1044                 port->tty->termios->c_oflag = 0;
1045                 port->tty->termios->c_iflag = 0;
1046                 priv->termios_initialized = 1;
1047                 port->tty->low_latency = 1;
1048                 priv->poll = 0;
1049          }
1050         spin_unlock_irqrestore(&priv->lock, flags);
1051
1052         /* initialize writebuf */
1053 #define FISH(a, b, c, d) do { \
1054         result = usb_control_msg(port->serial->dev,     \
1055                                 usb_rcvctrlpipe(port->serial->dev, 0),  \
1056                                 b, a, c, d, buf, 1, 1000); \
1057         dbg("0x%x:0x%x:0x%x:0x%x  %d - %x", a, b, c, d, result, \
1058                                 buf[0]); } while (0);
1059
1060 #define SOUP(a, b, c, d)  do { \
1061         result = usb_control_msg(port->serial->dev,     \
1062                                 usb_sndctrlpipe(port->serial->dev, 0),  \
1063                                 b, a, c, d, NULL, 0, 1000); \
1064         dbg("0x%x:0x%x:0x%x:0x%x  %d", a, b, c, d, result); } while (0)
1065
1066         /*  This is not UART related but IUU USB driver related or something */
1067         /*  like that. Basically no IUU will accept any commands from the USB */
1068         /*  host unless it has received the following message */
1069         /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */
1070
1071         SOUP(0x03, 0x02, 0x02, 0x0);
1072         kfree(buf);
1073         iuu_led(port, 0xF000, 0xF000, 0, 0xFF);
1074         iuu_uart_on(port);
1075         if (boost < 100)
1076                 boost = 100;
1077         switch (clockmode) {
1078         case 2:         /*  3.680 Mhz */
1079                 iuu_clk(port, IUU_CLK_3680000 * boost / 100);
1080                 result =
1081                     iuu_uart_baud(port, 9600 * boost / 100, &actual,
1082                                   IUU_PARITY_EVEN);
1083                 break;
1084         case 3:         /*  6.00 Mhz */
1085                 iuu_clk(port, IUU_CLK_6000000 * boost / 100);
1086                 result =
1087                     iuu_uart_baud(port, 16457 * boost / 100, &actual,
1088                                   IUU_PARITY_EVEN);
1089                 break;
1090         default:                /*  3.579 Mhz */
1091                 iuu_clk(port, IUU_CLK_3579000 * boost / 100);
1092                 result =
1093                     iuu_uart_baud(port, 9600 * boost / 100, &actual,
1094                                   IUU_PARITY_EVEN);
1095         }
1096
1097         /* set the cardin cardout signals */
1098         switch (cdmode) {
1099         case 0:
1100                 iuu_cardin = 0;
1101                 iuu_cardout = 0;
1102                 break;
1103         case 1:
1104                 iuu_cardin = TIOCM_CD;
1105                 iuu_cardout =  0;
1106                 break;
1107         case 2:
1108                 iuu_cardin = 0;
1109                 iuu_cardout = TIOCM_CD;
1110                 break;
1111         case 3:
1112                 iuu_cardin = TIOCM_DSR;
1113                 iuu_cardout = 0;
1114                 break;
1115         case 4:
1116                 iuu_cardin = 0;
1117                 iuu_cardout = TIOCM_DSR;
1118                 break;
1119         case 5:
1120                 iuu_cardin = TIOCM_CTS;
1121                 iuu_cardout = 0;
1122                 break;
1123         case 6:
1124                 iuu_cardin = 0;
1125                 iuu_cardout = TIOCM_CTS;
1126                 break;
1127         case 7:
1128                 iuu_cardin = TIOCM_RNG;
1129                 iuu_cardout = 0;
1130                 break;
1131         case 8:
1132                 iuu_cardin = 0;
1133                 iuu_cardout = TIOCM_RNG;
1134         }
1135
1136         iuu_uart_flush(port);
1137
1138         dbg("%s - initialization done", __func__);
1139
1140         memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
1141         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1142                           usb_sndbulkpipe(port->serial->dev,
1143                                           port->bulk_out_endpointAddress),
1144                           port->write_urb->transfer_buffer, 1,
1145                           read_rxcmd_callback, port);
1146         result = usb_submit_urb(port->write_urb, GFP_KERNEL);
1147
1148         if (result) {
1149                 dev_err(&port->dev, "%s - failed submitting read urb,"
1150                         " error %d\n", __func__, result);
1151                 iuu_close(port, NULL);
1152                 return -EPROTO;
1153         } else {
1154                 dbg("%s - rxcmd OK", __func__);
1155         }
1156         return result;
1157 }
1158
1159 static struct usb_serial_driver iuu_device = {
1160         .driver = {
1161                    .owner = THIS_MODULE,
1162                    .name = "iuu_phoenix",
1163                    },
1164         .id_table = id_table,
1165         .num_ports = 1,
1166         .open = iuu_open,
1167         .close = iuu_close,
1168         .write = iuu_uart_write,
1169         .read_bulk_callback = iuu_uart_read_callback,
1170         .tiocmget = iuu_tiocmget,
1171         .tiocmset = iuu_tiocmset,
1172         .attach = iuu_startup,
1173         .shutdown = iuu_shutdown,
1174 };
1175
1176 static int __init iuu_init(void)
1177 {
1178         int retval;
1179         retval = usb_serial_register(&iuu_device);
1180         if (retval)
1181                 goto failed_usb_serial_register;
1182         retval = usb_register(&iuu_driver);
1183         if (retval)
1184                 goto failed_usb_register;
1185         info(DRIVER_DESC " " DRIVER_VERSION);
1186         return 0;
1187 failed_usb_register:
1188         usb_serial_deregister(&iuu_device);
1189 failed_usb_serial_register:
1190         return retval;
1191 }
1192
1193 static void __exit iuu_exit(void)
1194 {
1195         usb_deregister(&iuu_driver);
1196         usb_serial_deregister(&iuu_device);
1197 }
1198
1199 module_init(iuu_init);
1200 module_exit(iuu_exit);
1201
1202 MODULE_AUTHOR("Alain Degreffe eczema@ecze.com");
1203
1204 MODULE_DESCRIPTION(DRIVER_DESC);
1205 MODULE_LICENSE("GPL");
1206
1207 MODULE_VERSION(DRIVER_VERSION);
1208 module_param(debug, bool, S_IRUGO | S_IWUSR);
1209 MODULE_PARM_DESC(debug, "Debug enabled or not");
1210
1211 module_param(xmas, bool, S_IRUGO | S_IWUSR);
1212 MODULE_PARM_DESC(xmas, "xmas color enabled or not");
1213
1214 module_param(boost, int, S_IRUGO | S_IWUSR);
1215 MODULE_PARM_DESC(boost, "overclock boost percent 100 to 500");
1216
1217 module_param(clockmode, int, S_IRUGO | S_IWUSR);
1218 MODULE_PARM_DESC(clockmode, "1=3Mhz579,2=3Mhz680,3=6Mhz");
1219
1220 module_param(cdmode, int, S_IRUGO | S_IWUSR);
1221 MODULE_PARM_DESC(cdmode, "Card detect mode 0=none, 1=CD, 2=!CD, 3=DSR, "
1222                  "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING");