Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[pandora-kernel.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 "v0.10"
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 /* Release function */
125 static void iuu_release(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         int buf_len;
654         char *buf_ptr = port->write_urb->transfer_buffer;
655         dbg("%s - enter", __func__);
656
657         spin_lock_irqsave(&priv->lock, flags);
658         *buf_ptr++ = IUU_UART_ESC;
659         *buf_ptr++ = IUU_UART_TX;
660         *buf_ptr++ = priv->writelen;
661
662         memcpy(buf_ptr, priv->writebuf, priv->writelen);
663         buf_len = priv->writelen;
664         priv->writelen = 0;
665         spin_unlock_irqrestore(&priv->lock, flags);
666         if (debug == 1) {
667                 for (i = 0; i < buf_len; i++)
668                         sprintf(priv->dbgbuf + i*2 ,
669                                 "%02X", priv->writebuf[i]);
670                 priv->dbgbuf[buf_len+i*2] = 0;
671                 dbg("%s - writing %i chars : %s", __func__,
672                     buf_len, priv->dbgbuf);
673         }
674         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
675                           usb_sndbulkpipe(port->serial->dev,
676                                           port->bulk_out_endpointAddress),
677                           port->write_urb->transfer_buffer, buf_len + 3,
678                           iuu_rxcmd, port);
679         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
680         usb_serial_port_softint(port);
681         return result;
682 }
683
684 static int iuu_read_buf(struct usb_serial_port *port, int len)
685 {
686         int result;
687         dbg("%s - enter", __func__);
688
689         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
690                           usb_rcvbulkpipe(port->serial->dev,
691                                           port->bulk_in_endpointAddress),
692                           port->read_urb->transfer_buffer, len,
693                           read_buf_callback, port);
694         result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
695         return result;
696 }
697
698 static void iuu_uart_read_callback(struct urb *urb)
699 {
700         struct usb_serial_port *port = urb->context;
701         struct iuu_private *priv = usb_get_serial_port_data(port);
702         unsigned long flags;
703         int status = urb->status;
704         int error = 0;
705         int len = 0;
706         unsigned char *data = urb->transfer_buffer;
707         priv->poll++;
708
709         dbg("%s - enter", __func__);
710
711         if (status) {
712                 dbg("%s - status = %d", __func__, status);
713                 /* error stop all */
714                 return;
715         }
716         if (data == NULL)
717                 dbg("%s - data is NULL !!!", __func__);
718
719         if (urb->actual_length == 1  && data != NULL)
720                 len = (int) data[0];
721
722         if (urb->actual_length > 1) {
723                 dbg("%s - urb->actual_length = %i", __func__,
724                     urb->actual_length);
725                 error = 1;
726                 return;
727         }
728         /* if len > 0 call readbuf */
729
730         if (len > 0 && error == 0) {
731                 dbg("%s - call read buf - len to read is %i ",
732                         __func__, len);
733                 status = iuu_read_buf(port, len);
734                 return;
735         }
736         /* need to update status  ? */
737         if (priv->poll > 99) {
738                 status = iuu_status(port);
739                 priv->poll = 0;
740                 return;
741         }
742
743         /* reset waiting ? */
744
745         if (priv->reset == 1) {
746                 status = iuu_reset(port, 0xC);
747                 return;
748         }
749         /* Writebuf is waiting */
750         spin_lock_irqsave(&priv->lock, flags);
751         if (priv->writelen > 0) {
752                 spin_unlock_irqrestore(&priv->lock, flags);
753                 status = iuu_bulk_write(port);
754                 return;
755         }
756         spin_unlock_irqrestore(&priv->lock, flags);
757         /* if nothing to write call again rxcmd */
758         dbg("%s - rxcmd recall", __func__);
759         iuu_led_activity_off(urb);
760 }
761
762 static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port,
763                           const u8 *buf, int count)
764 {
765         struct iuu_private *priv = usb_get_serial_port_data(port);
766         unsigned long flags;
767         dbg("%s - enter", __func__);
768
769         if (count > 256)
770                 return -ENOMEM;
771
772         spin_lock_irqsave(&priv->lock, flags);
773
774         /* fill the buffer */
775         memcpy(priv->writebuf + priv->writelen, 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         int status = urb->status;
787
788         dbg("%s - status = %d", __func__, status);
789
790         if (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_ONE_STOP_BIT) | (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 void iuu_set_termios(struct tty_struct *tty,
946                 struct usb_serial_port *port, struct ktermios *old_termios)
947 {
948         const u32 supported_mask = CMSPAR|PARENB|PARODD;
949
950         unsigned int cflag = tty->termios->c_cflag;
951         int status;
952         u32 actual;
953         u32 parity;
954         int csize = CS7;
955         int baud = 9600;        /* Fixed for the moment */
956         u32 newval = cflag & supported_mask;
957
958         /* compute the parity parameter */
959         parity = 0;
960         if (cflag & CMSPAR) {   /* Using mark space */
961                 if (cflag & PARODD)
962                         parity |= IUU_PARITY_SPACE;
963                 else
964                         parity |= IUU_PARITY_MARK;
965         } else if (!(cflag & PARENB)) {
966                 parity |= IUU_PARITY_NONE;
967                 csize = CS8;
968         } else if (cflag & PARODD)
969                 parity |= IUU_PARITY_ODD;
970         else
971                 parity |= IUU_PARITY_EVEN;
972
973         parity |= (cflag & CSTOPB ? IUU_TWO_STOP_BITS : IUU_ONE_STOP_BIT);
974
975         /* set it */
976         status = iuu_uart_baud(port,
977                         (clockmode == 2) ? 16457 : 9600 * boost / 100,
978                         &actual, parity);
979
980         /* set the termios value to the real one, so the user now what has
981          * changed. We support few fields so its easies to copy the old hw
982          * settings back over and then adjust them
983          */
984         if (old_termios)
985                 tty_termios_copy_hw(tty->termios, old_termios);
986         if (status != 0)        /* Set failed - return old bits */
987                 return;
988         /* Re-encode speed, parity and csize */
989         tty_encode_baud_rate(tty, baud, baud);
990         tty->termios->c_cflag &= ~(supported_mask|CSIZE);
991         tty->termios->c_cflag |= newval | csize;
992 }
993
994 static void iuu_close(struct usb_serial_port *port)
995 {
996         /* iuu_led (port,255,0,0,0); */
997         struct usb_serial *serial;
998
999         serial = port->serial;
1000         if (!serial)
1001                 return;
1002
1003         dbg("%s - port %d", __func__, port->number);
1004
1005         iuu_uart_off(port);
1006         if (serial->dev) {
1007                 /* free writebuf */
1008                 /* shutdown our urbs */
1009                 dbg("%s - shutting down urbs", __func__);
1010                 usb_kill_urb(port->write_urb);
1011                 usb_kill_urb(port->read_urb);
1012                 usb_kill_urb(port->interrupt_in_urb);
1013                 msleep(1000);
1014                 /* wait one second to free all buffers */
1015                 iuu_led(port, 0, 0, 0xF000, 0xFF);
1016                 msleep(1000);
1017                 usb_reset_device(port->serial->dev);
1018         }
1019 }
1020
1021 static int iuu_open(struct tty_struct *tty,
1022                         struct usb_serial_port *port, struct file *filp)
1023 {
1024         struct usb_serial *serial = port->serial;
1025         u8 *buf;
1026         int result;
1027         u32 actual;
1028         unsigned long flags;
1029         struct iuu_private *priv = usb_get_serial_port_data(port);
1030
1031         dbg("%s -  port %d", __func__, port->number);
1032         usb_clear_halt(serial->dev, port->write_urb->pipe);
1033         usb_clear_halt(serial->dev, port->read_urb->pipe);
1034
1035         buf = kmalloc(10, GFP_KERNEL);
1036         if (buf == NULL)
1037                 return -ENOMEM;
1038
1039         /* fixup the endpoint buffer size */
1040         kfree(port->bulk_out_buffer);
1041         port->bulk_out_buffer = kmalloc(512, GFP_KERNEL);
1042         port->bulk_out_size = 512;
1043         kfree(port->bulk_in_buffer);
1044         port->bulk_in_buffer = kmalloc(512, GFP_KERNEL);
1045         port->bulk_in_size = 512;
1046
1047         if (!port->bulk_out_buffer || !port->bulk_in_buffer) {
1048                 kfree(port->bulk_out_buffer);
1049                 kfree(port->bulk_in_buffer);
1050                 kfree(buf);
1051                 return -ENOMEM;
1052         }
1053
1054         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1055                           usb_sndbulkpipe(port->serial->dev,
1056                                           port->bulk_out_endpointAddress),
1057                           port->bulk_out_buffer, 512,
1058                           NULL, NULL);
1059
1060
1061         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
1062                           usb_rcvbulkpipe(port->serial->dev,
1063                                           port->bulk_in_endpointAddress),
1064                           port->bulk_in_buffer, 512,
1065                           NULL, NULL);
1066
1067         /* set the termios structure */
1068         spin_lock_irqsave(&priv->lock, flags);
1069         if (tty && !priv->termios_initialized) {
1070                 *(tty->termios) = tty_std_termios;
1071                 tty->termios->c_cflag = CLOCAL | CREAD | CS8 | B9600
1072                                         | TIOCM_CTS | CSTOPB | PARENB;
1073                 tty->termios->c_ispeed = 9600;
1074                 tty->termios->c_ospeed = 9600;
1075                 tty->termios->c_lflag = 0;
1076                 tty->termios->c_oflag = 0;
1077                 tty->termios->c_iflag = 0;
1078                 priv->termios_initialized = 1;
1079                 priv->poll = 0;
1080          }
1081         spin_unlock_irqrestore(&priv->lock, flags);
1082
1083         /* initialize writebuf */
1084 #define FISH(a, b, c, d) do { \
1085         result = usb_control_msg(port->serial->dev,     \
1086                                 usb_rcvctrlpipe(port->serial->dev, 0),  \
1087                                 b, a, c, d, buf, 1, 1000); \
1088         dbg("0x%x:0x%x:0x%x:0x%x  %d - %x", a, b, c, d, result, \
1089                                 buf[0]); } while (0);
1090
1091 #define SOUP(a, b, c, d)  do { \
1092         result = usb_control_msg(port->serial->dev,     \
1093                                 usb_sndctrlpipe(port->serial->dev, 0),  \
1094                                 b, a, c, d, NULL, 0, 1000); \
1095         dbg("0x%x:0x%x:0x%x:0x%x  %d", a, b, c, d, result); } while (0)
1096
1097         /*  This is not UART related but IUU USB driver related or something */
1098         /*  like that. Basically no IUU will accept any commands from the USB */
1099         /*  host unless it has received the following message */
1100         /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */
1101
1102         SOUP(0x03, 0x02, 0x02, 0x0);
1103         kfree(buf);
1104         iuu_led(port, 0xF000, 0xF000, 0, 0xFF);
1105         iuu_uart_on(port);
1106         if (boost < 100)
1107                 boost = 100;
1108         switch (clockmode) {
1109         case 2:         /*  3.680 Mhz */
1110                 iuu_clk(port, IUU_CLK_3680000 * boost / 100);
1111                 result =
1112                     iuu_uart_baud(port, 9600 * boost / 100, &actual,
1113                                   IUU_PARITY_EVEN);
1114                 break;
1115         case 3:         /*  6.00 Mhz */
1116                 iuu_clk(port, IUU_CLK_6000000 * boost / 100);
1117                 result =
1118                     iuu_uart_baud(port, 16457 * boost / 100, &actual,
1119                                   IUU_PARITY_EVEN);
1120                 break;
1121         default:                /*  3.579 Mhz */
1122                 iuu_clk(port, IUU_CLK_3579000 * boost / 100);
1123                 result =
1124                     iuu_uart_baud(port, 9600 * boost / 100, &actual,
1125                                   IUU_PARITY_EVEN);
1126         }
1127
1128         /* set the cardin cardout signals */
1129         switch (cdmode) {
1130         case 0:
1131                 iuu_cardin = 0;
1132                 iuu_cardout = 0;
1133                 break;
1134         case 1:
1135                 iuu_cardin = TIOCM_CD;
1136                 iuu_cardout =  0;
1137                 break;
1138         case 2:
1139                 iuu_cardin = 0;
1140                 iuu_cardout = TIOCM_CD;
1141                 break;
1142         case 3:
1143                 iuu_cardin = TIOCM_DSR;
1144                 iuu_cardout = 0;
1145                 break;
1146         case 4:
1147                 iuu_cardin = 0;
1148                 iuu_cardout = TIOCM_DSR;
1149                 break;
1150         case 5:
1151                 iuu_cardin = TIOCM_CTS;
1152                 iuu_cardout = 0;
1153                 break;
1154         case 6:
1155                 iuu_cardin = 0;
1156                 iuu_cardout = TIOCM_CTS;
1157                 break;
1158         case 7:
1159                 iuu_cardin = TIOCM_RNG;
1160                 iuu_cardout = 0;
1161                 break;
1162         case 8:
1163                 iuu_cardin = 0;
1164                 iuu_cardout = TIOCM_RNG;
1165         }
1166
1167         iuu_uart_flush(port);
1168
1169         dbg("%s - initialization done", __func__);
1170
1171         memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
1172         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1173                           usb_sndbulkpipe(port->serial->dev,
1174                                           port->bulk_out_endpointAddress),
1175                           port->write_urb->transfer_buffer, 1,
1176                           read_rxcmd_callback, port);
1177         result = usb_submit_urb(port->write_urb, GFP_KERNEL);
1178
1179         if (result) {
1180                 dev_err(&port->dev, "%s - failed submitting read urb,"
1181                         " error %d\n", __func__, result);
1182                 iuu_close(port);
1183                 return -EPROTO;
1184         } else {
1185                 dbg("%s - rxcmd OK", __func__);
1186         }
1187         return result;
1188 }
1189
1190 static struct usb_serial_driver iuu_device = {
1191         .driver = {
1192                    .owner = THIS_MODULE,
1193                    .name = "iuu_phoenix",
1194                    },
1195         .id_table = id_table,
1196         .num_ports = 1,
1197         .open = iuu_open,
1198         .close = iuu_close,
1199         .write = iuu_uart_write,
1200         .read_bulk_callback = iuu_uart_read_callback,
1201         .tiocmget = iuu_tiocmget,
1202         .tiocmset = iuu_tiocmset,
1203         .set_termios = iuu_set_termios,
1204         .attach = iuu_startup,
1205         .release = iuu_release,
1206 };
1207
1208 static int __init iuu_init(void)
1209 {
1210         int retval;
1211         retval = usb_serial_register(&iuu_device);
1212         if (retval)
1213                 goto failed_usb_serial_register;
1214         retval = usb_register(&iuu_driver);
1215         if (retval)
1216                 goto failed_usb_register;
1217         printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
1218                DRIVER_DESC "\n");
1219         return 0;
1220 failed_usb_register:
1221         usb_serial_deregister(&iuu_device);
1222 failed_usb_serial_register:
1223         return retval;
1224 }
1225
1226 static void __exit iuu_exit(void)
1227 {
1228         usb_deregister(&iuu_driver);
1229         usb_serial_deregister(&iuu_device);
1230 }
1231
1232 module_init(iuu_init);
1233 module_exit(iuu_exit);
1234
1235 MODULE_AUTHOR("Alain Degreffe eczema@ecze.com");
1236
1237 MODULE_DESCRIPTION(DRIVER_DESC);
1238 MODULE_LICENSE("GPL");
1239
1240 MODULE_VERSION(DRIVER_VERSION);
1241 module_param(debug, bool, S_IRUGO | S_IWUSR);
1242 MODULE_PARM_DESC(debug, "Debug enabled or not");
1243
1244 module_param(xmas, bool, S_IRUGO | S_IWUSR);
1245 MODULE_PARM_DESC(xmas, "xmas color enabled or not");
1246
1247 module_param(boost, int, S_IRUGO | S_IWUSR);
1248 MODULE_PARM_DESC(boost, "overclock boost percent 100 to 500");
1249
1250 module_param(clockmode, int, S_IRUGO | S_IWUSR);
1251 MODULE_PARM_DESC(clockmode, "1=3Mhz579,2=3Mhz680,3=6Mhz");
1252
1253 module_param(cdmode, int, S_IRUGO | S_IWUSR);
1254 MODULE_PARM_DESC(cdmode, "Card detect mode 0=none, 1=CD, 2=!CD, 3=DSR, "
1255                  "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING");