USB: mct_u232: fix broken close
[linux-2.6.git] / drivers / usb / serial / iuu_phoenix.c
1 /*
2  * Infinity Unlimited USB Phoenix driver
3  *
4  * Copyright (C) 2010 James Courtier-Dutton (James@superbug.co.uk)
5
6  * Copyright (C) 2007 Alain Degreffe (eczema@ecze.com)
7  *
8  * Original code taken from iuutool (Copyright (C) 2006 Juan Carlos Borrás)
9  *
10  *      This program is free software; you can redistribute it and/or modify
11  *      it under the terms of the GNU General Public License as published by
12  *      the Free Software Foundation; either version 2 of the License, or
13  *      (at your option) any later version.
14  *
15  *  And tested with help of WB Electronics
16  *
17  */
18 #include <linux/kernel.h>
19 #include <linux/errno.h>
20 #include <linux/init.h>
21 #include <linux/slab.h>
22 #include <linux/tty.h>
23 #include <linux/tty_driver.h>
24 #include <linux/tty_flip.h>
25 #include <linux/serial.h>
26 #include <linux/module.h>
27 #include <linux/moduleparam.h>
28 #include <linux/spinlock.h>
29 #include <linux/uaccess.h>
30 #include <linux/usb.h>
31 #include <linux/usb/serial.h>
32 #include "iuu_phoenix.h"
33 #include <linux/random.h>
34
35
36 #ifdef CONFIG_USB_SERIAL_DEBUG
37 static int debug = 1;
38 #else
39 static int debug;
40 #endif
41
42 /*
43  * Version Information
44  */
45 #define DRIVER_VERSION "v0.12"
46 #define DRIVER_DESC "Infinity USB Unlimited Phoenix driver"
47
48 static const struct usb_device_id id_table[] = {
49         {USB_DEVICE(IUU_USB_VENDOR_ID, IUU_USB_PRODUCT_ID)},
50         {}                      /* Terminating entry */
51 };
52 MODULE_DEVICE_TABLE(usb, id_table);
53
54 static struct usb_driver iuu_driver = {
55         .name = "iuu_phoenix",
56         .probe = usb_serial_probe,
57         .disconnect = usb_serial_disconnect,
58         .id_table = id_table,
59         .no_dynamic_id = 1,
60 };
61
62 /* turbo parameter */
63 static int boost = 100;
64 static int clockmode = 1;
65 static int cdmode = 1;
66 static int iuu_cardin;
67 static int iuu_cardout;
68 static int xmas;
69 static int vcc_default = 5;
70
71 static void read_rxcmd_callback(struct urb *urb);
72
73 struct iuu_private {
74         spinlock_t lock;        /* store irq state */
75         wait_queue_head_t delta_msr_wait;
76         u8 line_status;
77         int tiostatus;          /* store IUART SIGNAL for tiocmget call */
78         u8 reset;               /* if 1 reset is needed */
79         int poll;               /* number of poll */
80         u8 *writebuf;           /* buffer for writing to device */
81         int writelen;           /* num of byte to write to device */
82         u8 *buf;                /* used for initialize speed */
83         u8 *dbgbuf;             /* debug buffer */
84         u8 len;
85         int vcc;                /* vcc (either 3 or 5 V) */
86         u32 baud;
87         u32 boost;
88         u32 clk;
89 };
90
91
92 static void iuu_free_buf(struct iuu_private *priv)
93 {
94         kfree(priv->buf);
95         kfree(priv->dbgbuf);
96         kfree(priv->writebuf);
97 }
98
99 static int iuu_alloc_buf(struct iuu_private *priv)
100 {
101         priv->buf = kzalloc(256, GFP_KERNEL);
102         priv->dbgbuf = kzalloc(256, GFP_KERNEL);
103         priv->writebuf = kzalloc(256, GFP_KERNEL);
104         if (!priv->buf || !priv->dbgbuf || !priv->writebuf) {
105                 iuu_free_buf(priv);
106                 dbg("%s problem allocation buffer", __func__);
107                 return -ENOMEM;
108         }
109         dbg("%s - Privates buffers allocation success", __func__);
110         return 0;
111 }
112
113 static int iuu_startup(struct usb_serial *serial)
114 {
115         struct iuu_private *priv;
116         priv = kzalloc(sizeof(struct iuu_private), GFP_KERNEL);
117         dbg("%s- priv allocation success", __func__);
118         if (!priv)
119                 return -ENOMEM;
120         if (iuu_alloc_buf(priv)) {
121                 kfree(priv);
122                 return -ENOMEM;
123         }
124         priv->vcc = vcc_default;
125         spin_lock_init(&priv->lock);
126         init_waitqueue_head(&priv->delta_msr_wait);
127         usb_set_serial_port_data(serial->port[0], priv);
128         return 0;
129 }
130
131 /* Release function */
132 static void iuu_release(struct usb_serial *serial)
133 {
134         struct usb_serial_port *port = serial->port[0];
135         struct iuu_private *priv = usb_get_serial_port_data(port);
136         if (!port)
137                 return;
138
139         dbg("%s", __func__);
140
141         if (priv) {
142                 iuu_free_buf(priv);
143                 dbg("%s - I will free all", __func__);
144                 usb_set_serial_port_data(port, NULL);
145
146                 dbg("%s - priv is not anymore in port structure", __func__);
147                 kfree(priv);
148
149                 dbg("%s priv is now kfree", __func__);
150         }
151 }
152
153 static int iuu_tiocmset(struct tty_struct *tty, struct file *file,
154                         unsigned int set, unsigned int clear)
155 {
156         struct usb_serial_port *port = tty->driver_data;
157         struct iuu_private *priv = usb_get_serial_port_data(port);
158         unsigned long flags;
159
160         /* FIXME: locking on tiomstatus */
161         dbg("%s (%d) msg : SET = 0x%04x, CLEAR = 0x%04x ", __func__,
162             port->number, set, clear);
163
164         spin_lock_irqsave(&priv->lock, flags);
165
166         if ((set & TIOCM_RTS) && !(priv->tiostatus == TIOCM_RTS)) {
167                 dbg("%s TIOCMSET RESET called !!!", __func__);
168                 priv->reset = 1;
169         }
170         if (set & TIOCM_RTS)
171                 priv->tiostatus = TIOCM_RTS;
172
173         spin_unlock_irqrestore(&priv->lock, flags);
174         return 0;
175 }
176
177 /* This is used to provide a carrier detect mechanism
178  * When a card is present, the response is 0x00
179  * When no card , the reader respond with TIOCM_CD
180  * This is known as CD autodetect mechanism
181  */
182 static int iuu_tiocmget(struct tty_struct *tty, struct file *file)
183 {
184         struct usb_serial_port *port = tty->driver_data;
185         struct iuu_private *priv = usb_get_serial_port_data(port);
186         unsigned long flags;
187         int rc;
188
189         spin_lock_irqsave(&priv->lock, flags);
190         rc = priv->tiostatus;
191         spin_unlock_irqrestore(&priv->lock, flags);
192
193         return rc;
194 }
195
196 static void iuu_rxcmd(struct urb *urb)
197 {
198         struct usb_serial_port *port = urb->context;
199         int result;
200         int status = urb->status;
201
202         dbg("%s - enter", __func__);
203
204         if (status) {
205                 dbg("%s - status = %d", __func__, status);
206                 /* error stop all */
207                 return;
208         }
209
210
211         memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
212         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
213                           usb_sndbulkpipe(port->serial->dev,
214                                           port->bulk_out_endpointAddress),
215                           port->write_urb->transfer_buffer, 1,
216                           read_rxcmd_callback, port);
217         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
218 }
219
220 static int iuu_reset(struct usb_serial_port *port, u8 wt)
221 {
222         struct iuu_private *priv = usb_get_serial_port_data(port);
223         int result;
224         char *buf_ptr = port->write_urb->transfer_buffer;
225         dbg("%s - enter", __func__);
226
227         /* Prepare the reset sequence */
228
229         *buf_ptr++ = IUU_RST_SET;
230         *buf_ptr++ = IUU_DELAY_MS;
231         *buf_ptr++ = wt;
232         *buf_ptr = IUU_RST_CLEAR;
233
234         /* send the sequence */
235
236         usb_fill_bulk_urb(port->write_urb,
237                           port->serial->dev,
238                           usb_sndbulkpipe(port->serial->dev,
239                                           port->bulk_out_endpointAddress),
240                           port->write_urb->transfer_buffer, 4, iuu_rxcmd, port);
241         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
242         priv->reset = 0;
243         return result;
244 }
245
246 /* Status Function
247  * Return value is
248  * 0x00 = no card
249  * 0x01 = smartcard
250  * 0x02 = sim card
251  */
252 static void iuu_update_status_callback(struct urb *urb)
253 {
254         struct usb_serial_port *port = urb->context;
255         struct iuu_private *priv = usb_get_serial_port_data(port);
256         u8 *st;
257         int status = urb->status;
258
259         dbg("%s - enter", __func__);
260
261         if (status) {
262                 dbg("%s - status = %d", __func__, status);
263                 /* error stop all */
264                 return;
265         }
266
267         st = urb->transfer_buffer;
268         dbg("%s - enter", __func__);
269         if (urb->actual_length == 1) {
270                 switch (st[0]) {
271                 case 0x1:
272                         priv->tiostatus = iuu_cardout;
273                         break;
274                 case 0x0:
275                         priv->tiostatus = iuu_cardin;
276                         break;
277                 default:
278                         priv->tiostatus = iuu_cardin;
279                 }
280         }
281         iuu_rxcmd(urb);
282 }
283
284 static void iuu_status_callback(struct urb *urb)
285 {
286         struct usb_serial_port *port = urb->context;
287         int result;
288         int status = urb->status;
289
290         dbg("%s - status = %d", __func__, status);
291         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
292                           usb_rcvbulkpipe(port->serial->dev,
293                                           port->bulk_in_endpointAddress),
294                           port->read_urb->transfer_buffer, 256,
295                           iuu_update_status_callback, port);
296         result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
297 }
298
299 static int iuu_status(struct usb_serial_port *port)
300 {
301         int result;
302
303         dbg("%s - enter", __func__);
304
305         memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1);
306         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
307                           usb_sndbulkpipe(port->serial->dev,
308                                           port->bulk_out_endpointAddress),
309                           port->write_urb->transfer_buffer, 1,
310                           iuu_status_callback, port);
311         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
312         return result;
313
314 }
315
316 static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
317 {
318         int status;
319         struct usb_serial *serial = port->serial;
320         int actual = 0;
321
322         dbg("%s - enter", __func__);
323
324         /* send the data out the bulk port */
325
326         status =
327             usb_bulk_msg(serial->dev,
328                          usb_sndbulkpipe(serial->dev,
329                                          port->bulk_out_endpointAddress), buf,
330                          count, &actual, HZ * 1);
331
332         if (status != IUU_OPERATION_OK)
333                 dbg("%s - error = %2x", __func__, status);
334         else
335                 dbg("%s - write OK !", __func__);
336         return status;
337 }
338
339 static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
340 {
341         int status;
342         struct usb_serial *serial = port->serial;
343         int actual = 0;
344
345         dbg("%s - enter", __func__);
346
347         /* send the data out the bulk port */
348
349         status =
350             usb_bulk_msg(serial->dev,
351                          usb_rcvbulkpipe(serial->dev,
352                                          port->bulk_in_endpointAddress), buf,
353                          count, &actual, HZ * 1);
354
355         if (status != IUU_OPERATION_OK)
356                 dbg("%s - error = %2x", __func__, status);
357         else
358                 dbg("%s - read OK !", __func__);
359         return status;
360 }
361
362 static int iuu_led(struct usb_serial_port *port, unsigned int R,
363                    unsigned int G, unsigned int B, u8 f)
364 {
365         int status;
366         u8 *buf;
367         buf = kmalloc(8, GFP_KERNEL);
368         if (!buf)
369                 return -ENOMEM;
370
371         dbg("%s - enter", __func__);
372
373         buf[0] = IUU_SET_LED;
374         buf[1] = R & 0xFF;
375         buf[2] = (R >> 8) & 0xFF;
376         buf[3] = G & 0xFF;
377         buf[4] = (G >> 8) & 0xFF;
378         buf[5] = B & 0xFF;
379         buf[6] = (B >> 8) & 0xFF;
380         buf[7] = f;
381         status = bulk_immediate(port, buf, 8);
382         kfree(buf);
383         if (status != IUU_OPERATION_OK)
384                 dbg("%s - led error status = %2x", __func__, status);
385         else
386                 dbg("%s - led OK !", __func__);
387         return IUU_OPERATION_OK;
388 }
389
390 static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1,
391                                  u8 b2, u8 freq)
392 {
393         *buf++ = IUU_SET_LED;
394         *buf++ = r1;
395         *buf++ = r2;
396         *buf++ = g1;
397         *buf++ = g2;
398         *buf++ = b1;
399         *buf++ = b2;
400         *buf = freq;
401 }
402
403 static void iuu_led_activity_on(struct urb *urb)
404 {
405         struct usb_serial_port *port = urb->context;
406         int result;
407         char *buf_ptr = port->write_urb->transfer_buffer;
408         *buf_ptr++ = IUU_SET_LED;
409         if (xmas == 1) {
410                 get_random_bytes(buf_ptr, 6);
411                 *(buf_ptr+7) = 1;
412         } else {
413                 iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255);
414         }
415
416         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
417                           usb_sndbulkpipe(port->serial->dev,
418                                           port->bulk_out_endpointAddress),
419                           port->write_urb->transfer_buffer, 8 ,
420                           iuu_rxcmd, port);
421         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
422 }
423
424 static void iuu_led_activity_off(struct urb *urb)
425 {
426         struct usb_serial_port *port = urb->context;
427         int result;
428         char *buf_ptr = port->write_urb->transfer_buffer;
429         if (xmas == 1) {
430                 iuu_rxcmd(urb);
431                 return;
432         } else {
433                 *buf_ptr++ = IUU_SET_LED;
434                 iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255);
435         }
436         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
437                           usb_sndbulkpipe(port->serial->dev,
438                                           port->bulk_out_endpointAddress),
439                           port->write_urb->transfer_buffer, 8 ,
440                           iuu_rxcmd, port);
441         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
442 }
443
444
445
446 static int iuu_clk(struct usb_serial_port *port, int dwFrq)
447 {
448         int status;
449         struct iuu_private *priv = usb_get_serial_port_data(port);
450         int Count = 0;
451         u8 FrqGenAdr = 0x69;
452         u8 DIV = 0;             /* 8bit */
453         u8 XDRV = 0;            /* 8bit */
454         u8 PUMP = 0;            /* 3bit */
455         u8 PBmsb = 0;           /* 2bit */
456         u8 PBlsb = 0;           /* 8bit */
457         u8 PO = 0;              /* 1bit */
458         u8 Q = 0;               /* 7bit */
459         /* 24bit = 3bytes */
460         unsigned int P = 0;
461         unsigned int P2 = 0;
462         int frq = (int)dwFrq;
463
464         dbg("%s - enter", __func__);
465
466         if (frq == 0) {
467                 priv->buf[Count++] = IUU_UART_WRITE_I2C;
468                 priv->buf[Count++] = FrqGenAdr << 1;
469                 priv->buf[Count++] = 0x09;
470                 priv->buf[Count++] = 0x00;
471
472                 status = bulk_immediate(port, (u8 *) priv->buf, Count);
473                 if (status != 0) {
474                         dbg("%s - write error ", __func__);
475                         return status;
476                 }
477         } else if (frq == 3579000) {
478                 DIV = 100;
479                 P = 1193;
480                 Q = 40;
481                 XDRV = 0;
482         } else if (frq == 3680000) {
483                 DIV = 105;
484                 P = 161;
485                 Q = 5;
486                 XDRV = 0;
487         } else if (frq == 6000000) {
488                 DIV = 66;
489                 P = 66;
490                 Q = 2;
491                 XDRV = 0x28;
492         } else {
493                 unsigned int result = 0;
494                 unsigned int tmp = 0;
495                 unsigned int check;
496                 unsigned int check2;
497                 char found = 0x00;
498                 unsigned int lQ = 2;
499                 unsigned int lP = 2055;
500                 unsigned int lDiv = 4;
501
502                 for (lQ = 2; lQ <= 47 && !found; lQ++)
503                         for (lP = 2055; lP >= 8 && !found; lP--)
504                                 for (lDiv = 4; lDiv <= 127 && !found; lDiv++) {
505                                         tmp = (12000000 / lDiv) * (lP / lQ);
506                                         if (abs((int)(tmp - frq)) <
507                                             abs((int)(frq - result))) {
508                                                 check2 = (12000000 / lQ);
509                                                 if (check2 < 250000)
510                                                         continue;
511                                                 check = (12000000 / lQ) * lP;
512                                                 if (check > 400000000)
513                                                         continue;
514                                                 if (check < 100000000)
515                                                         continue;
516                                                 if (lDiv < 4 || lDiv > 127)
517                                                         continue;
518                                                 result = tmp;
519                                                 P = lP;
520                                                 DIV = lDiv;
521                                                 Q = lQ;
522                                                 if (result == frq)
523                                                         found = 0x01;
524                                         }
525                                 }
526         }
527         P2 = ((P - PO) / 2) - 4;
528         DIV = DIV;
529         PUMP = 0x04;
530         PBmsb = (P2 >> 8 & 0x03);
531         PBlsb = P2 & 0xFF;
532         PO = (P >> 10) & 0x01;
533         Q = Q - 2;
534
535         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /* 0x4C */
536         priv->buf[Count++] = FrqGenAdr << 1;
537         priv->buf[Count++] = 0x09;
538         priv->buf[Count++] = 0x20;      /* Adr = 0x09 */
539         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /* 0x4C */
540         priv->buf[Count++] = FrqGenAdr << 1;
541         priv->buf[Count++] = 0x0C;
542         priv->buf[Count++] = DIV;       /* Adr = 0x0C */
543         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /* 0x4C */
544         priv->buf[Count++] = FrqGenAdr << 1;
545         priv->buf[Count++] = 0x12;
546         priv->buf[Count++] = XDRV;      /* Adr = 0x12 */
547         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
548         priv->buf[Count++] = FrqGenAdr << 1;
549         priv->buf[Count++] = 0x13;
550         priv->buf[Count++] = 0x6B;      /* Adr = 0x13 */
551         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
552         priv->buf[Count++] = FrqGenAdr << 1;
553         priv->buf[Count++] = 0x40;
554         priv->buf[Count++] = (0xC0 | ((PUMP & 0x07) << 2)) |
555                              (PBmsb & 0x03);    /* Adr = 0x40 */
556         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
557         priv->buf[Count++] = FrqGenAdr << 1;
558         priv->buf[Count++] = 0x41;
559         priv->buf[Count++] = PBlsb;     /* Adr = 0x41 */
560         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
561         priv->buf[Count++] = FrqGenAdr << 1;
562         priv->buf[Count++] = 0x42;
563         priv->buf[Count++] = Q | (((PO & 0x01) << 7));  /* Adr = 0x42 */
564         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
565         priv->buf[Count++] = FrqGenAdr << 1;
566         priv->buf[Count++] = 0x44;
567         priv->buf[Count++] = (char)0xFF;        /* Adr = 0x44 */
568         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
569         priv->buf[Count++] = FrqGenAdr << 1;
570         priv->buf[Count++] = 0x45;
571         priv->buf[Count++] = (char)0xFE;        /* Adr = 0x45 */
572         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
573         priv->buf[Count++] = FrqGenAdr << 1;
574         priv->buf[Count++] = 0x46;
575         priv->buf[Count++] = 0x7F;      /* Adr = 0x46 */
576         priv->buf[Count++] = IUU_UART_WRITE_I2C;        /*  0x4C */
577         priv->buf[Count++] = FrqGenAdr << 1;
578         priv->buf[Count++] = 0x47;
579         priv->buf[Count++] = (char)0x84;        /* Adr = 0x47 */
580
581         status = bulk_immediate(port, (u8 *) priv->buf, Count);
582         if (status != IUU_OPERATION_OK)
583                 dbg("%s - write error ", __func__);
584         return status;
585 }
586
587 static int iuu_uart_flush(struct usb_serial_port *port)
588 {
589         int i;
590         int status;
591         u8 rxcmd = IUU_UART_RX;
592         struct iuu_private *priv = usb_get_serial_port_data(port);
593
594         dbg("%s - enter", __func__);
595
596         if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0)
597                 return -EIO;
598
599         for (i = 0; i < 2; i++) {
600                 status = bulk_immediate(port, &rxcmd, 1);
601                 if (status != IUU_OPERATION_OK) {
602                         dbg("%s - uart_flush_write error", __func__);
603                         return status;
604                 }
605
606                 status = read_immediate(port, &priv->len, 1);
607                 if (status != IUU_OPERATION_OK) {
608                         dbg("%s - uart_flush_read error", __func__);
609                         return status;
610                 }
611
612                 if (priv->len > 0) {
613                         dbg("%s - uart_flush datalen is : %i ", __func__,
614                             priv->len);
615                         status = read_immediate(port, priv->buf, priv->len);
616                         if (status != IUU_OPERATION_OK) {
617                                 dbg("%s - uart_flush_read error", __func__);
618                                 return status;
619                         }
620                 }
621         }
622         dbg("%s - uart_flush_read OK!", __func__);
623         iuu_led(port, 0, 0xF000, 0, 0xFF);
624         return status;
625 }
626
627 static void read_buf_callback(struct urb *urb)
628 {
629         struct usb_serial_port *port = urb->context;
630         unsigned char *data = urb->transfer_buffer;
631         struct tty_struct *tty;
632         int status = urb->status;
633
634         dbg("%s - status = %d", __func__, status);
635
636         if (status) {
637                 if (status == -EPROTO) {
638                         /* reschedule needed */
639                 }
640                 return;
641         }
642
643         dbg("%s - %i chars to write", __func__, urb->actual_length);
644         tty = tty_port_tty_get(&port->port);
645         if (data == NULL)
646                 dbg("%s - data is NULL !!!", __func__);
647         if (tty && urb->actual_length && data) {
648                 tty_insert_flip_string(tty, data, urb->actual_length);
649                 tty_flip_buffer_push(tty);
650         }
651         tty_kref_put(tty);
652         iuu_led_activity_on(urb);
653 }
654
655 static int iuu_bulk_write(struct usb_serial_port *port)
656 {
657         struct iuu_private *priv = usb_get_serial_port_data(port);
658         unsigned long flags;
659         int result;
660         int i;
661         int buf_len;
662         char *buf_ptr = port->write_urb->transfer_buffer;
663         dbg("%s - enter", __func__);
664
665         spin_lock_irqsave(&priv->lock, flags);
666         *buf_ptr++ = IUU_UART_ESC;
667         *buf_ptr++ = IUU_UART_TX;
668         *buf_ptr++ = priv->writelen;
669
670         memcpy(buf_ptr, priv->writebuf, priv->writelen);
671         buf_len = priv->writelen;
672         priv->writelen = 0;
673         spin_unlock_irqrestore(&priv->lock, flags);
674         if (debug == 1) {
675                 for (i = 0; i < buf_len; i++)
676                         sprintf(priv->dbgbuf + i*2 ,
677                                 "%02X", priv->writebuf[i]);
678                 priv->dbgbuf[buf_len+i*2] = 0;
679                 dbg("%s - writing %i chars : %s", __func__,
680                     buf_len, priv->dbgbuf);
681         }
682         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
683                           usb_sndbulkpipe(port->serial->dev,
684                                           port->bulk_out_endpointAddress),
685                           port->write_urb->transfer_buffer, buf_len + 3,
686                           iuu_rxcmd, port);
687         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
688         usb_serial_port_softint(port);
689         return result;
690 }
691
692 static int iuu_read_buf(struct usb_serial_port *port, int len)
693 {
694         int result;
695         dbg("%s - enter", __func__);
696
697         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
698                           usb_rcvbulkpipe(port->serial->dev,
699                                           port->bulk_in_endpointAddress),
700                           port->read_urb->transfer_buffer, len,
701                           read_buf_callback, port);
702         result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
703         return result;
704 }
705
706 static void iuu_uart_read_callback(struct urb *urb)
707 {
708         struct usb_serial_port *port = urb->context;
709         struct iuu_private *priv = usb_get_serial_port_data(port);
710         unsigned long flags;
711         int status = urb->status;
712         int error = 0;
713         int len = 0;
714         unsigned char *data = urb->transfer_buffer;
715         priv->poll++;
716
717         dbg("%s - enter", __func__);
718
719         if (status) {
720                 dbg("%s - status = %d", __func__, status);
721                 /* error stop all */
722                 return;
723         }
724         if (data == NULL)
725                 dbg("%s - data is NULL !!!", __func__);
726
727         if (urb->actual_length == 1  && data != NULL)
728                 len = (int) data[0];
729
730         if (urb->actual_length > 1) {
731                 dbg("%s - urb->actual_length = %i", __func__,
732                     urb->actual_length);
733                 error = 1;
734                 return;
735         }
736         /* if len > 0 call readbuf */
737
738         if (len > 0 && error == 0) {
739                 dbg("%s - call read buf - len to read is %i ",
740                         __func__, len);
741                 status = iuu_read_buf(port, len);
742                 return;
743         }
744         /* need to update status  ? */
745         if (priv->poll > 99) {
746                 status = iuu_status(port);
747                 priv->poll = 0;
748                 return;
749         }
750
751         /* reset waiting ? */
752
753         if (priv->reset == 1) {
754                 status = iuu_reset(port, 0xC);
755                 return;
756         }
757         /* Writebuf is waiting */
758         spin_lock_irqsave(&priv->lock, flags);
759         if (priv->writelen > 0) {
760                 spin_unlock_irqrestore(&priv->lock, flags);
761                 status = iuu_bulk_write(port);
762                 return;
763         }
764         spin_unlock_irqrestore(&priv->lock, flags);
765         /* if nothing to write call again rxcmd */
766         dbg("%s - rxcmd recall", __func__);
767         iuu_led_activity_off(urb);
768 }
769
770 static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port,
771                           const u8 *buf, int count)
772 {
773         struct iuu_private *priv = usb_get_serial_port_data(port);
774         unsigned long flags;
775         dbg("%s - enter", __func__);
776
777         if (count > 256)
778                 return -ENOMEM;
779
780         spin_lock_irqsave(&priv->lock, flags);
781
782         /* fill the buffer */
783         memcpy(priv->writebuf + priv->writelen, buf, count);
784         priv->writelen += count;
785         spin_unlock_irqrestore(&priv->lock, flags);
786
787         return count;
788 }
789
790 static void read_rxcmd_callback(struct urb *urb)
791 {
792         struct usb_serial_port *port = urb->context;
793         int result;
794         int status = urb->status;
795
796         dbg("%s - status = %d", __func__, status);
797
798         if (status) {
799                 /* error stop all */
800                 return;
801         }
802
803         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
804                           usb_rcvbulkpipe(port->serial->dev,
805                                           port->bulk_in_endpointAddress),
806                           port->read_urb->transfer_buffer, 256,
807                           iuu_uart_read_callback, port);
808         result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
809         dbg("%s - submit result = %d", __func__, result);
810         return;
811 }
812
813 static int iuu_uart_on(struct usb_serial_port *port)
814 {
815         int status;
816         u8 *buf;
817
818         buf = kmalloc(sizeof(u8) * 4, GFP_KERNEL);
819
820         if (!buf)
821                 return -ENOMEM;
822
823         buf[0] = IUU_UART_ENABLE;
824         buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF);
825         buf[2] = (u8) (0x00FF & IUU_BAUD_9600);
826         buf[3] = (u8) (0x0F0 & IUU_ONE_STOP_BIT) | (0x07 & IUU_PARITY_EVEN);
827
828         status = bulk_immediate(port, buf, 4);
829         if (status != IUU_OPERATION_OK) {
830                 dbg("%s - uart_on error", __func__);
831                 goto uart_enable_failed;
832         }
833         /*  iuu_reset() the card after iuu_uart_on() */
834         status = iuu_uart_flush(port);
835         if (status != IUU_OPERATION_OK)
836                 dbg("%s - uart_flush error", __func__);
837 uart_enable_failed:
838         kfree(buf);
839         return status;
840 }
841
842 /*  Diables the IUU UART (a.k.a. the Phoenix voiderface) */
843 static int iuu_uart_off(struct usb_serial_port *port)
844 {
845         int status;
846         u8 *buf;
847         buf = kmalloc(1, GFP_KERNEL);
848         if (!buf)
849                 return -ENOMEM;
850         buf[0] = IUU_UART_DISABLE;
851
852         status = bulk_immediate(port, buf, 1);
853         if (status != IUU_OPERATION_OK)
854                 dbg("%s - uart_off error", __func__);
855
856         kfree(buf);
857         return status;
858 }
859
860 static int iuu_uart_baud(struct usb_serial_port *port, u32 baud_base,
861                          u32 *actual, u8 parity)
862 {
863         int status;
864         u32 baud;
865         u8 *dataout;
866         u8 DataCount = 0;
867         u8 T1Frekvens = 0;
868         u8 T1reload = 0;
869         unsigned int T1FrekvensHZ = 0;
870
871         dbg("%s - enter baud_base=%d", __func__, baud_base);
872         dataout = kmalloc(sizeof(u8) * 5, GFP_KERNEL);
873
874         if (!dataout)
875                 return -ENOMEM;
876         /*baud = (((priv->clk / 35) * baud_base) / 100000); */
877         baud = baud_base;
878
879         if (baud < 1200 || baud > 230400) {
880                 kfree(dataout);
881                 return IUU_INVALID_PARAMETER;
882         }
883         if (baud > 977) {
884                 T1Frekvens = 3;
885                 T1FrekvensHZ = 500000;
886         }
887
888         if (baud > 3906) {
889                 T1Frekvens = 2;
890                 T1FrekvensHZ = 2000000;
891         }
892
893         if (baud > 11718) {
894                 T1Frekvens = 1;
895                 T1FrekvensHZ = 6000000;
896         }
897
898         if (baud > 46875) {
899                 T1Frekvens = 0;
900                 T1FrekvensHZ = 24000000;
901         }
902
903         T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2));
904
905         /*  magic number here:  ENTER_FIRMWARE_UPDATE; */
906         dataout[DataCount++] = IUU_UART_ESC;
907         /*  magic number here:  CHANGE_BAUD; */
908         dataout[DataCount++] = IUU_UART_CHANGE;
909         dataout[DataCount++] = T1Frekvens;
910         dataout[DataCount++] = T1reload;
911
912         *actual = (T1FrekvensHZ / (256 - T1reload)) / 2;
913
914         switch (parity & 0x0F) {
915         case IUU_PARITY_NONE:
916                 dataout[DataCount++] = 0x00;
917                 break;
918         case IUU_PARITY_EVEN:
919                 dataout[DataCount++] = 0x01;
920                 break;
921         case IUU_PARITY_ODD:
922                 dataout[DataCount++] = 0x02;
923                 break;
924         case IUU_PARITY_MARK:
925                 dataout[DataCount++] = 0x03;
926                 break;
927         case IUU_PARITY_SPACE:
928                 dataout[DataCount++] = 0x04;
929                 break;
930         default:
931                 kfree(dataout);
932                 return IUU_INVALID_PARAMETER;
933                 break;
934         }
935
936         switch (parity & 0xF0) {
937         case IUU_ONE_STOP_BIT:
938                 dataout[DataCount - 1] |= IUU_ONE_STOP_BIT;
939                 break;
940
941         case IUU_TWO_STOP_BITS:
942                 dataout[DataCount - 1] |= IUU_TWO_STOP_BITS;
943                 break;
944         default:
945                 kfree(dataout);
946                 return IUU_INVALID_PARAMETER;
947                 break;
948         }
949
950         status = bulk_immediate(port, dataout, DataCount);
951         if (status != IUU_OPERATION_OK)
952                 dbg("%s - uart_off error", __func__);
953         kfree(dataout);
954         return status;
955 }
956
957 static void iuu_set_termios(struct tty_struct *tty,
958                 struct usb_serial_port *port, struct ktermios *old_termios)
959 {
960         const u32 supported_mask = CMSPAR|PARENB|PARODD;
961         struct iuu_private *priv = usb_get_serial_port_data(port);
962         unsigned int cflag = tty->termios->c_cflag;
963         int status;
964         u32 actual;
965         u32 parity;
966         int csize = CS7;
967         int baud;
968         u32 newval = cflag & supported_mask;
969
970         /* Just use the ospeed. ispeed should be the same. */
971         baud = tty->termios->c_ospeed;
972
973         dbg("%s - enter c_ospeed or baud=%d", __func__, baud);
974
975         /* compute the parity parameter */
976         parity = 0;
977         if (cflag & CMSPAR) {   /* Using mark space */
978                 if (cflag & PARODD)
979                         parity |= IUU_PARITY_SPACE;
980                 else
981                         parity |= IUU_PARITY_MARK;
982         } else if (!(cflag & PARENB)) {
983                 parity |= IUU_PARITY_NONE;
984                 csize = CS8;
985         } else if (cflag & PARODD)
986                 parity |= IUU_PARITY_ODD;
987         else
988                 parity |= IUU_PARITY_EVEN;
989
990         parity |= (cflag & CSTOPB ? IUU_TWO_STOP_BITS : IUU_ONE_STOP_BIT);
991
992         /* set it */
993         status = iuu_uart_baud(port,
994                         baud * priv->boost / 100,
995                         &actual, parity);
996
997         /* set the termios value to the real one, so the user now what has
998          * changed. We support few fields so its easies to copy the old hw
999          * settings back over and then adjust them
1000          */
1001         if (old_termios)
1002                 tty_termios_copy_hw(tty->termios, old_termios);
1003         if (status != 0)        /* Set failed - return old bits */
1004                 return;
1005         /* Re-encode speed, parity and csize */
1006         tty_encode_baud_rate(tty, baud, baud);
1007         tty->termios->c_cflag &= ~(supported_mask|CSIZE);
1008         tty->termios->c_cflag |= newval | csize;
1009 }
1010
1011 static void iuu_close(struct usb_serial_port *port)
1012 {
1013         /* iuu_led (port,255,0,0,0); */
1014         struct usb_serial *serial;
1015
1016         serial = port->serial;
1017         if (!serial)
1018                 return;
1019
1020         dbg("%s - port %d", __func__, port->number);
1021
1022         iuu_uart_off(port);
1023         if (serial->dev) {
1024                 /* free writebuf */
1025                 /* shutdown our urbs */
1026                 dbg("%s - shutting down urbs", __func__);
1027                 usb_kill_urb(port->write_urb);
1028                 usb_kill_urb(port->read_urb);
1029                 usb_kill_urb(port->interrupt_in_urb);
1030                 iuu_led(port, 0, 0, 0xF000, 0xFF);
1031         }
1032 }
1033
1034 static void iuu_init_termios(struct tty_struct *tty)
1035 {
1036         dbg("%s - enter", __func__);
1037         *(tty->termios) = tty_std_termios;
1038         tty->termios->c_cflag = CLOCAL | CREAD | CS8 | B9600
1039                                 | TIOCM_CTS | CSTOPB | PARENB;
1040         tty->termios->c_ispeed = 9600;
1041         tty->termios->c_ospeed = 9600;
1042         tty->termios->c_lflag = 0;
1043         tty->termios->c_oflag = 0;
1044         tty->termios->c_iflag = 0;
1045 }
1046
1047 static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port)
1048 {
1049         struct usb_serial *serial = port->serial;
1050         u8 *buf;
1051         int result;
1052         int baud;
1053         u32 actual;
1054         struct iuu_private *priv = usb_get_serial_port_data(port);
1055
1056         baud = tty->termios->c_ospeed;
1057         tty->termios->c_ispeed = baud;
1058         /* Re-encode speed */
1059         tty_encode_baud_rate(tty, baud, baud);
1060
1061         dbg("%s -  port %d, baud %d", __func__, port->number, baud);
1062         usb_clear_halt(serial->dev, port->write_urb->pipe);
1063         usb_clear_halt(serial->dev, port->read_urb->pipe);
1064
1065         buf = kmalloc(10, GFP_KERNEL);
1066         if (buf == NULL)
1067                 return -ENOMEM;
1068
1069         priv->poll = 0;
1070
1071         /* initialize writebuf */
1072 #define FISH(a, b, c, d) do { \
1073         result = usb_control_msg(port->serial->dev,     \
1074                                 usb_rcvctrlpipe(port->serial->dev, 0),  \
1075                                 b, a, c, d, buf, 1, 1000); \
1076         dbg("0x%x:0x%x:0x%x:0x%x  %d - %x", a, b, c, d, result, \
1077                                 buf[0]); } while (0);
1078
1079 #define SOUP(a, b, c, d)  do { \
1080         result = usb_control_msg(port->serial->dev,     \
1081                                 usb_sndctrlpipe(port->serial->dev, 0),  \
1082                                 b, a, c, d, NULL, 0, 1000); \
1083         dbg("0x%x:0x%x:0x%x:0x%x  %d", a, b, c, d, result); } while (0)
1084
1085         /*  This is not UART related but IUU USB driver related or something */
1086         /*  like that. Basically no IUU will accept any commands from the USB */
1087         /*  host unless it has received the following message */
1088         /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */
1089
1090         SOUP(0x03, 0x02, 0x02, 0x0);
1091         kfree(buf);
1092         iuu_led(port, 0xF000, 0xF000, 0, 0xFF);
1093         iuu_uart_on(port);
1094         if (boost < 100)
1095                 boost = 100;
1096         priv->boost = boost;
1097         priv->baud = baud;
1098         switch (clockmode) {
1099         case 2:         /*  3.680 Mhz */
1100                 priv->clk = IUU_CLK_3680000;
1101                 iuu_clk(port, IUU_CLK_3680000 * boost / 100);
1102                 result =
1103                     iuu_uart_baud(port, baud * boost / 100, &actual,
1104                                   IUU_PARITY_EVEN);
1105                 break;
1106         case 3:         /*  6.00 Mhz */
1107                 iuu_clk(port, IUU_CLK_6000000 * boost / 100);
1108                 priv->clk = IUU_CLK_6000000;
1109                 /* Ratio of 6000000 to 3500000 for baud 9600 */
1110                 result =
1111                     iuu_uart_baud(port, 16457 * boost / 100, &actual,
1112                                   IUU_PARITY_EVEN);
1113                 break;
1114         default:                /*  3.579 Mhz */
1115                 iuu_clk(port, IUU_CLK_3579000 * boost / 100);
1116                 priv->clk = IUU_CLK_3579000;
1117                 result =
1118                     iuu_uart_baud(port, baud * boost / 100, &actual,
1119                                   IUU_PARITY_EVEN);
1120         }
1121
1122         /* set the cardin cardout signals */
1123         switch (cdmode) {
1124         case 0:
1125                 iuu_cardin = 0;
1126                 iuu_cardout = 0;
1127                 break;
1128         case 1:
1129                 iuu_cardin = TIOCM_CD;
1130                 iuu_cardout =  0;
1131                 break;
1132         case 2:
1133                 iuu_cardin = 0;
1134                 iuu_cardout = TIOCM_CD;
1135                 break;
1136         case 3:
1137                 iuu_cardin = TIOCM_DSR;
1138                 iuu_cardout = 0;
1139                 break;
1140         case 4:
1141                 iuu_cardin = 0;
1142                 iuu_cardout = TIOCM_DSR;
1143                 break;
1144         case 5:
1145                 iuu_cardin = TIOCM_CTS;
1146                 iuu_cardout = 0;
1147                 break;
1148         case 6:
1149                 iuu_cardin = 0;
1150                 iuu_cardout = TIOCM_CTS;
1151                 break;
1152         case 7:
1153                 iuu_cardin = TIOCM_RNG;
1154                 iuu_cardout = 0;
1155                 break;
1156         case 8:
1157                 iuu_cardin = 0;
1158                 iuu_cardout = TIOCM_RNG;
1159         }
1160
1161         iuu_uart_flush(port);
1162
1163         dbg("%s - initialization done", __func__);
1164
1165         memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
1166         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1167                           usb_sndbulkpipe(port->serial->dev,
1168                                           port->bulk_out_endpointAddress),
1169                           port->write_urb->transfer_buffer, 1,
1170                           read_rxcmd_callback, port);
1171         result = usb_submit_urb(port->write_urb, GFP_KERNEL);
1172
1173         if (result) {
1174                 dev_err(&port->dev, "%s - failed submitting read urb,"
1175                         " error %d\n", __func__, result);
1176                 iuu_close(port);
1177                 return -EPROTO;
1178         } else {
1179                 dbg("%s - rxcmd OK", __func__);
1180         }
1181         return result;
1182 }
1183
1184 /* how to change VCC */
1185 static int iuu_vcc_set(struct usb_serial_port *port, unsigned int vcc)
1186 {
1187         int status;
1188         u8 *buf;
1189
1190         buf = kmalloc(5, GFP_KERNEL);
1191         if (!buf)
1192                 return -ENOMEM;
1193
1194         dbg("%s - enter", __func__);
1195
1196         buf[0] = IUU_SET_VCC;
1197         buf[1] = vcc & 0xFF;
1198         buf[2] = (vcc >> 8) & 0xFF;
1199         buf[3] = (vcc >> 16) & 0xFF;
1200         buf[4] = (vcc >> 24) & 0xFF;
1201
1202         status = bulk_immediate(port, buf, 5);
1203         kfree(buf);
1204
1205         if (status != IUU_OPERATION_OK)
1206                 dbg("%s - vcc error status = %2x", __func__, status);
1207         else
1208                 dbg("%s - vcc OK !", __func__);
1209
1210         return status;
1211 }
1212
1213 /*
1214  * Sysfs Attributes
1215  */
1216
1217 static ssize_t show_vcc_mode(struct device *dev,
1218         struct device_attribute *attr, char *buf)
1219 {
1220         struct usb_serial_port *port = to_usb_serial_port(dev);
1221         struct iuu_private *priv = usb_get_serial_port_data(port);
1222
1223         return sprintf(buf, "%d\n", priv->vcc);
1224 }
1225
1226 static ssize_t store_vcc_mode(struct device *dev,
1227         struct device_attribute *attr, const char *buf, size_t count)
1228 {
1229         struct usb_serial_port *port = to_usb_serial_port(dev);
1230         struct iuu_private *priv = usb_get_serial_port_data(port);
1231         unsigned long v;
1232
1233         if (strict_strtoul(buf, 10, &v)) {
1234                 dev_err(dev, "%s - vcc_mode: %s is not a unsigned long\n",
1235                                 __func__, buf);
1236                 goto fail_store_vcc_mode;
1237         }
1238
1239         dbg("%s: setting vcc_mode = %ld", __func__, v);
1240
1241         if ((v != 3) && (v != 5)) {
1242                 dev_err(dev, "%s - vcc_mode %ld is invalid\n", __func__, v);
1243         } else {
1244                 iuu_vcc_set(port, v);
1245                 priv->vcc = v;
1246         }
1247 fail_store_vcc_mode:
1248         return count;
1249 }
1250
1251 static DEVICE_ATTR(vcc_mode, S_IRUSR | S_IWUSR, show_vcc_mode,
1252         store_vcc_mode);
1253
1254 static int iuu_create_sysfs_attrs(struct usb_serial_port *port)
1255 {
1256         dbg("%s", __func__);
1257
1258         return device_create_file(&port->dev, &dev_attr_vcc_mode);
1259 }
1260
1261 static int iuu_remove_sysfs_attrs(struct usb_serial_port *port)
1262 {
1263         dbg("%s", __func__);
1264
1265         device_remove_file(&port->dev, &dev_attr_vcc_mode);
1266         return 0;
1267 }
1268
1269 /*
1270  * End Sysfs Attributes
1271  */
1272
1273 static struct usb_serial_driver iuu_device = {
1274         .driver = {
1275                    .owner = THIS_MODULE,
1276                    .name = "iuu_phoenix",
1277                    },
1278         .id_table = id_table,
1279         .num_ports = 1,
1280         .bulk_in_size = 512,
1281         .bulk_out_size = 512,
1282         .port_probe = iuu_create_sysfs_attrs,
1283         .port_remove = iuu_remove_sysfs_attrs,
1284         .open = iuu_open,
1285         .close = iuu_close,
1286         .write = iuu_uart_write,
1287         .read_bulk_callback = iuu_uart_read_callback,
1288         .tiocmget = iuu_tiocmget,
1289         .tiocmset = iuu_tiocmset,
1290         .set_termios = iuu_set_termios,
1291         .init_termios = iuu_init_termios,
1292         .attach = iuu_startup,
1293         .release = iuu_release,
1294 };
1295
1296 static int __init iuu_init(void)
1297 {
1298         int retval;
1299         retval = usb_serial_register(&iuu_device);
1300         if (retval)
1301                 goto failed_usb_serial_register;
1302         retval = usb_register(&iuu_driver);
1303         if (retval)
1304                 goto failed_usb_register;
1305         printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
1306                DRIVER_DESC "\n");
1307         return 0;
1308 failed_usb_register:
1309         usb_serial_deregister(&iuu_device);
1310 failed_usb_serial_register:
1311         return retval;
1312 }
1313
1314 static void __exit iuu_exit(void)
1315 {
1316         usb_deregister(&iuu_driver);
1317         usb_serial_deregister(&iuu_device);
1318 }
1319
1320 module_init(iuu_init);
1321 module_exit(iuu_exit);
1322
1323 MODULE_AUTHOR("Alain Degreffe eczema@ecze.com");
1324
1325 MODULE_DESCRIPTION(DRIVER_DESC);
1326 MODULE_LICENSE("GPL");
1327
1328 MODULE_VERSION(DRIVER_VERSION);
1329 module_param(debug, bool, S_IRUGO | S_IWUSR);
1330 MODULE_PARM_DESC(debug, "Debug enabled or not");
1331
1332 module_param(xmas, bool, S_IRUGO | S_IWUSR);
1333 MODULE_PARM_DESC(xmas, "Xmas colors enabled or not");
1334
1335 module_param(boost, int, S_IRUGO | S_IWUSR);
1336 MODULE_PARM_DESC(boost, "Card overclock boost (in percent 100-500)");
1337
1338 module_param(clockmode, int, S_IRUGO | S_IWUSR);
1339 MODULE_PARM_DESC(clockmode, "Card clock mode (1=3.579 MHz, 2=3.680 MHz, "
1340                 "3=6 Mhz)");
1341
1342 module_param(cdmode, int, S_IRUGO | S_IWUSR);
1343 MODULE_PARM_DESC(cdmode, "Card detect mode (0=none, 1=CD, 2=!CD, 3=DSR, "
1344                  "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING)");
1345
1346 module_param(vcc_default, int, S_IRUGO | S_IWUSR);
1347 MODULE_PARM_DESC(vcc_default, "Set default VCC (either 3 for 3.3V or 5 "
1348                 "for 5V). Default to 5.");