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tty-usb-iuu-phoenix: Clean up to coding style
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / usb / serial / iuu_phoenix.c
blobddff37fa633904b28cb7a8ffe41c2a4804491c5f
1 /*
2 * Infinity Unlimited USB Phoenix driver
3 *
4 * Copyright (C) 2007 Alain Degreffe (eczema@ecze.com)
5 *
6 * Original code taken from iuutool (Copyright (C) 2006 Juan Carlos Borrás)
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * And tested with help of WB Electronics
14 *
15 */
16 #include <linux/kernel.h>
17 #include <linux/errno.h>
18 #include <linux/init.h>
19 #include <linux/slab.h>
20 #include <linux/tty.h>
21 #include <linux/tty_driver.h>
22 #include <linux/tty_flip.h>
23 #include <linux/serial.h>
24 #include <linux/module.h>
25 #include <linux/moduleparam.h>
26 #include <linux/spinlock.h>
27 #include <linux/uaccess.h>
28 #include <linux/usb.h>
29 #include <linux/usb/serial.h>
30 #include "iuu_phoenix.h"
31 #include <linux/random.h>
32
33
34 #ifdef CONFIG_USB_SERIAL_DEBUG
35 static int debug = 1;
36 #else
37 static int debug;
38 #endif
39
40 /*
41 * Version Information
42 */
43 #define DRIVER_VERSION "v0.5"
44 #define DRIVER_DESC "Infinity USB Unlimited Phoenix driver"
45
46 static struct usb_device_id id_table[] = {
47 {USB_DEVICE(IUU_USB_VENDOR_ID, IUU_USB_PRODUCT_ID)},
48 {} /* Terminating entry */
49 };
50 MODULE_DEVICE_TABLE(usb, id_table);
51
52 static struct usb_driver iuu_driver = {
53 .name = "iuu_phoenix",
54 .probe = usb_serial_probe,
55 .disconnect = usb_serial_disconnect,
56 .id_table = id_table,
57 .no_dynamic_id = 1,
58 };
59
60 /* turbo parameter */
61 static int boost = 100;
62 static int clockmode = 1;
63 static int cdmode = 1;
64 static int iuu_cardin;
65 static int iuu_cardout;
66 static int xmas;
67
68 static void read_rxcmd_callback(struct urb *urb);
69
70 struct iuu_private {
71 spinlock_t lock; /* store irq state */
72 wait_queue_head_t delta_msr_wait;
73 u8 line_control;
74 u8 line_status;
75 u8 termios_initialized;
76 int tiostatus; /* store IUART SIGNAL for tiocmget call */
77 u8 reset; /* if 1 reset is needed */
78 int poll; /* number of poll */
79 u8 *writebuf; /* buffer for writing to device */
80 int writelen; /* num of byte to write to device */
81 u8 *buf; /* used for initialize speed */
82 u8 *dbgbuf; /* debug buffer */
83 u8 len;
84 };
85
86
87 static void iuu_free_buf(struct iuu_private *priv)
88 {
89 kfree(priv->buf);
90 kfree(priv->dbgbuf);
91 kfree(priv->writebuf);
92 }
93
94 static int iuu_alloc_buf(struct iuu_private *priv)
95 {
96 priv->buf = kzalloc(256, GFP_KERNEL);
97 priv->dbgbuf = kzalloc(256, GFP_KERNEL);
98 priv->writebuf = kzalloc(256, GFP_KERNEL);
99 if (!priv->buf || !priv->dbgbuf || !priv->writebuf) {
100 iuu_free_buf(priv);
101 dbg("%s problem allocation buffer", __func__);
102 return -ENOMEM;
103 }
104 dbg("%s - Privates buffers allocation success", __func__);
105 return 0;
106 }
107
108 static int iuu_startup(struct usb_serial *serial)
109 {
110 struct iuu_private *priv;
111 priv = kzalloc(sizeof(struct iuu_private), GFP_KERNEL);
112 dbg("%s- priv allocation success", __func__);
113 if (!priv)
114 return -ENOMEM;
115 if (iuu_alloc_buf(priv)) {
116 kfree(priv);
117 return -ENOMEM;
118 }
119 spin_lock_init(&priv->lock);
120 init_waitqueue_head(&priv->delta_msr_wait);
121 usb_set_serial_port_data(serial->port[0], priv);
122 return 0;
123 }
124
125 /* Shutdown function */
126 static void iuu_shutdown(struct usb_serial *serial)
127 {
128 struct usb_serial_port *port = serial->port[0];
129 struct iuu_private *priv = usb_get_serial_port_data(port);
130 if (!port)
131 return;
132
133 dbg("%s", __func__);
134
135 if (priv) {
136 iuu_free_buf(priv);
137 dbg("%s - I will free all", __func__);
138 usb_set_serial_port_data(port, NULL);
139
140 dbg("%s - priv is not anymore in port structure", __func__);
141 kfree(priv);
142
143 dbg("%s priv is now kfree", __func__);
144 }
145 }
146
147 static int iuu_tiocmset(struct tty_struct *tty, struct file *file,
148 unsigned int set, unsigned int clear)
149 {
150 struct usb_serial_port *port = tty->driver_data;
151 struct iuu_private *priv = usb_get_serial_port_data(port);
152 unsigned long flags;
153
154 /* FIXME: locking on tiomstatus */
155 dbg("%s (%d) msg : SET = 0x%04x, CLEAR = 0x%04x ", __func__,
156 port->number, set, clear);
157
158 spin_lock_irqsave(&priv->lock, flags);
159 if (set & TIOCM_RTS)
160 priv->tiostatus = TIOCM_RTS;
161
162 if (!(set & TIOCM_RTS) && priv->tiostatus == TIOCM_RTS) {
163 dbg("%s TIOCMSET RESET called !!!", __func__);
164 priv->reset = 1;
165 }
166 spin_unlock_irqrestore(&priv->lock, flags);
167 return 0;
168 }
169
170 /* This is used to provide a carrier detect mechanism
171 * When a card is present, the response is 0x00
172 * When no card , the reader respond with TIOCM_CD
173 * This is known as CD autodetect mechanism
174 */
175 static int iuu_tiocmget(struct tty_struct *tty, struct file *file)
176 {
177 struct usb_serial_port *port = tty->driver_data;
178 struct iuu_private *priv = usb_get_serial_port_data(port);
179 unsigned long flags;
180 int rc;
181
182 spin_lock_irqsave(&priv->lock, flags);
183 rc = priv->tiostatus;
184 spin_unlock_irqrestore(&priv->lock, flags);
185
186 return rc;
187 }
188
189 static void iuu_rxcmd(struct urb *urb)
190 {
191 struct usb_serial_port *port = urb->context;
192 int result;
193 dbg("%s - enter", __func__);
194
195 if (urb->status) {
196 dbg("%s - urb->status = %d", __func__, urb->status);
197 /* error stop all */
198 return;
199 }
200
201
202 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
203 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
204 usb_sndbulkpipe(port->serial->dev,
205 port->bulk_out_endpointAddress),
206 port->write_urb->transfer_buffer, 1,
207 read_rxcmd_callback, port);
208 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
209 }
210
211 static int iuu_reset(struct usb_serial_port *port, u8 wt)
212 {
213 struct iuu_private *priv = usb_get_serial_port_data(port);
214 int result;
215 char *buf_ptr = port->write_urb->transfer_buffer;
216 dbg("%s - enter", __func__);
217
218 /* Prepare the reset sequence */
219
220 *buf_ptr++ = IUU_RST_SET;
221 *buf_ptr++ = IUU_DELAY_MS;
222 *buf_ptr++ = wt;
223 *buf_ptr = IUU_RST_CLEAR;
224
225 /* send the sequence */
226
227 usb_fill_bulk_urb(port->write_urb,
228 port->serial->dev,
229 usb_sndbulkpipe(port->serial->dev,
230 port->bulk_out_endpointAddress),
231 port->write_urb->transfer_buffer, 4, iuu_rxcmd, port);
232 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
233 priv->reset = 0;
234 return result;
235 }
236
237 /* Status Function
238 * Return value is
239 * 0x00 = no card
240 * 0x01 = smartcard
241 * 0x02 = sim card
242 */
243 static void iuu_update_status_callback(struct urb *urb)
244 {
245 struct usb_serial_port *port = urb->context;
246 struct iuu_private *priv = usb_get_serial_port_data(port);
247 u8 *st;
248 dbg("%s - enter", __func__);
249
250 if (urb->status) {
251 dbg("%s - urb->status = %d", __func__, urb->status);
252 /* error stop all */
253 return;
254 }
255
256 st = urb->transfer_buffer;
257 dbg("%s - enter", __func__);
258 if (urb->actual_length == 1) {
259 switch (st[0]) {
260 case 0x1:
261 priv->tiostatus = iuu_cardout;
262 break;
263 case 0x0:
264 priv->tiostatus = iuu_cardin;
265 break;
266 default:
267 priv->tiostatus = iuu_cardin;
268 }
269 }
270 iuu_rxcmd(urb);
271 }
272
273 static void iuu_status_callback(struct urb *urb)
274 {
275 struct usb_serial_port *port = urb->context;
276 int result;
277 dbg("%s - enter", __func__);
278
279 dbg("%s - urb->status = %d", __func__, urb->status);
280 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
281 usb_rcvbulkpipe(port->serial->dev,
282 port->bulk_in_endpointAddress),
283 port->read_urb->transfer_buffer, 256,
284 iuu_update_status_callback, port);
285 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
286 }
287
288 static int iuu_status(struct usb_serial_port *port)
289 {
290 int result;
291
292 dbg("%s - enter", __func__);
293
294 memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1);
295 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
296 usb_sndbulkpipe(port->serial->dev,
297 port->bulk_out_endpointAddress),
298 port->write_urb->transfer_buffer, 1,
299 iuu_status_callback, port);
300 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
301 return result;
302
303 }
304
305 static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
306 {
307 int status;
308 struct usb_serial *serial = port->serial;
309 int actual = 0;
310
311 dbg("%s - enter", __func__);
312
313 /* send the data out the bulk port */
314
315 status =
316 usb_bulk_msg(serial->dev,
317 usb_sndbulkpipe(serial->dev,
318 port->bulk_out_endpointAddress), buf,
319 count, &actual, HZ * 1);
320
321 if (status != IUU_OPERATION_OK)
322 dbg("%s - error = %2x", __func__, status);
323 else
324 dbg("%s - write OK !", __func__);
325 return status;
326 }
327
328 static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
329 {
330 int status;
331 struct usb_serial *serial = port->serial;
332 int actual = 0;
333
334 dbg("%s - enter", __func__);
335
336 /* send the data out the bulk port */
337
338 status =
339 usb_bulk_msg(serial->dev,
340 usb_rcvbulkpipe(serial->dev,
341 port->bulk_in_endpointAddress), buf,
342 count, &actual, HZ * 1);
343
344 if (status != IUU_OPERATION_OK)
345 dbg("%s - error = %2x", __func__, status);
346 else
347 dbg("%s - read OK !", __func__);
348 return status;
349 }
350
351 static int iuu_led(struct usb_serial_port *port, unsigned int R,
352 unsigned int G, unsigned int B, u8 f)
353 {
354 int status;
355 u8 *buf;
356 buf = kmalloc(8, GFP_KERNEL);
357 if (!buf)
358 return -ENOMEM;
359
360 dbg("%s - enter", __func__);
361
362 buf[0] = IUU_SET_LED;
363 buf[1] = R & 0xFF;
364 buf[2] = (R >> 8) & 0xFF;
365 buf[3] = G & 0xFF;
366 buf[4] = (G >> 8) & 0xFF;
367 buf[5] = B & 0xFF;
368 buf[6] = (B >> 8) & 0xFF;
369 buf[7] = f;
370 status = bulk_immediate(port, buf, 8);
371 kfree(buf);
372 if (status != IUU_OPERATION_OK)
373 dbg("%s - led error status = %2x", __func__, status);
374 else
375 dbg("%s - led OK !", __func__);
376 return IUU_OPERATION_OK;
377 }
378
379 static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1,
380 u8 b2, u8 freq)
381 {
382 *buf++ = IUU_SET_LED;
383 *buf++ = r1;
384 *buf++ = r2;
385 *buf++ = g1;
386 *buf++ = g2;
387 *buf++ = b1;
388 *buf++ = b2;
389 *buf = freq;
390 }
391
392 static void iuu_led_activity_on(struct urb *urb)
393 {
394 struct usb_serial_port *port = urb->context;
395 int result;
396 char *buf_ptr = port->write_urb->transfer_buffer;
397 *buf_ptr++ = IUU_SET_LED;
398 if (xmas == 1) {
399 get_random_bytes(buf_ptr, 6);
400 *(buf_ptr+7) = 1;
401 } else {
402 iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255);
403 }
404
405 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
406 usb_sndbulkpipe(port->serial->dev,
407 port->bulk_out_endpointAddress),
408 port->write_urb->transfer_buffer, 8 ,
409 iuu_rxcmd, port);
410 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
411 }
412
413 static void iuu_led_activity_off(struct urb *urb)
414 {
415 struct usb_serial_port *port = urb->context;
416 int result;
417 char *buf_ptr = port->write_urb->transfer_buffer;
418 if (xmas == 1) {
419 iuu_rxcmd(urb);
420 return;
421 } else {
422 *buf_ptr++ = IUU_SET_LED;
423 iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255);
424 }
425 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
426 usb_sndbulkpipe(port->serial->dev,
427 port->bulk_out_endpointAddress),
428 port->write_urb->transfer_buffer, 8 ,
429 iuu_rxcmd, port);
430 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
431 }
432
433
434
435 static int iuu_clk(struct usb_serial_port *port, int dwFrq)
436 {
437 int status;
438 struct iuu_private *priv = usb_get_serial_port_data(port);
439 int Count = 0;
440 u8 FrqGenAdr = 0x69;
441 u8 DIV = 0; /* 8bit */
442 u8 XDRV = 0; /* 8bit */
443 u8 PUMP = 0; /* 3bit */
444 u8 PBmsb = 0; /* 2bit */
445 u8 PBlsb = 0; /* 8bit */
446 u8 PO = 0; /* 1bit */
447 u8 Q = 0; /* 7bit */
448 /* 24bit = 3bytes */
449 unsigned int P = 0;
450 unsigned int P2 = 0;
451 int frq = (int)dwFrq;
452
453 dbg("%s - enter", __func__);
454
455 if (frq == 0) {
456 priv->buf[Count++] = IUU_UART_WRITE_I2C;
457 priv->buf[Count++] = FrqGenAdr << 1;
458 priv->buf[Count++] = 0x09;
459 priv->buf[Count++] = 0x00;
460
461 status = bulk_immediate(port, (u8 *) priv->buf, Count);
462 if (status != 0) {
463 dbg("%s - write error ", __func__);
464 return status;
465 }
466 } else if (frq == 3579000) {
467 DIV = 100;
468 P = 1193;
469 Q = 40;
470 XDRV = 0;
471 } else if (frq == 3680000) {
472 DIV = 105;
473 P = 161;
474 Q = 5;
475 XDRV = 0;
476 } else if (frq == 6000000) {
477 DIV = 66;
478 P = 66;
479 Q = 2;
480 XDRV = 0x28;
481 } else {
482 unsigned int result = 0;
483 unsigned int tmp = 0;
484 unsigned int check;
485 unsigned int check2;
486 char found = 0x00;
487 unsigned int lQ = 2;
488 unsigned int lP = 2055;
489 unsigned int lDiv = 4;
490
491 for (lQ = 2; lQ <= 47 && !found; lQ++)
492 for (lP = 2055; lP >= 8 && !found; lP--)
493 for (lDiv = 4; lDiv <= 127 && !found; lDiv++) {
494 tmp = (12000000 / lDiv) * (lP / lQ);
495 if (abs((int)(tmp - frq)) <
496 abs((int)(frq - result))) {
497 check2 = (12000000 / lQ);
498 if (check2 < 250000)
499 continue;
500 check = (12000000 / lQ) * lP;
501 if (check > 400000000)
502 continue;
503 if (check < 100000000)
504 continue;
505 if (lDiv < 4 || lDiv > 127)
506 continue;
507 result = tmp;
508 P = lP;
509 DIV = lDiv;
510 Q = lQ;
511 if (result == frq)
512 found = 0x01;
513 }
514 }
515 }
516 P2 = ((P - PO) / 2) - 4;
517 DIV = DIV;
518 PUMP = 0x04;
519 PBmsb = (P2 >> 8 & 0x03);
520 PBlsb = P2 & 0xFF;
521 PO = (P >> 10) & 0x01;
522 Q = Q - 2;
523
524 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
525 priv->buf[Count++] = FrqGenAdr << 1;
526 priv->buf[Count++] = 0x09;
527 priv->buf[Count++] = 0x20; /* Adr = 0x09 */
528 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
529 priv->buf[Count++] = FrqGenAdr << 1;
530 priv->buf[Count++] = 0x0C;
531 priv->buf[Count++] = DIV; /* Adr = 0x0C */
532 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
533 priv->buf[Count++] = FrqGenAdr << 1;
534 priv->buf[Count++] = 0x12;
535 priv->buf[Count++] = XDRV; /* Adr = 0x12 */
536 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
537 priv->buf[Count++] = FrqGenAdr << 1;
538 priv->buf[Count++] = 0x13;
539 priv->buf[Count++] = 0x6B; /* Adr = 0x13 */
540 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
541 priv->buf[Count++] = FrqGenAdr << 1;
542 priv->buf[Count++] = 0x40;
543 priv->buf[Count++] = (0xC0 | ((PUMP & 0x07) << 2)) |
544 (PBmsb & 0x03); /* Adr = 0x40 */
545 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
546 priv->buf[Count++] = FrqGenAdr << 1;
547 priv->buf[Count++] = 0x41;
548 priv->buf[Count++] = PBlsb; /* Adr = 0x41 */
549 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
550 priv->buf[Count++] = FrqGenAdr << 1;
551 priv->buf[Count++] = 0x42;
552 priv->buf[Count++] = Q | (((PO & 0x01) << 7)); /* Adr = 0x42 */
553 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
554 priv->buf[Count++] = FrqGenAdr << 1;
555 priv->buf[Count++] = 0x44;
556 priv->buf[Count++] = (char)0xFF; /* Adr = 0x44 */
557 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
558 priv->buf[Count++] = FrqGenAdr << 1;
559 priv->buf[Count++] = 0x45;
560 priv->buf[Count++] = (char)0xFE; /* Adr = 0x45 */
561 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
562 priv->buf[Count++] = FrqGenAdr << 1;
563 priv->buf[Count++] = 0x46;
564 priv->buf[Count++] = 0x7F; /* Adr = 0x46 */
565 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
566 priv->buf[Count++] = FrqGenAdr << 1;
567 priv->buf[Count++] = 0x47;
568 priv->buf[Count++] = (char)0x84; /* Adr = 0x47 */
569
570 status = bulk_immediate(port, (u8 *) priv->buf, Count);
571 if (status != IUU_OPERATION_OK)
572 dbg("%s - write error ", __func__);
573 return status;
574 }
575
576 static int iuu_uart_flush(struct usb_serial_port *port)
577 {
578 int i;
579 int status;
580 u8 rxcmd = IUU_UART_RX;
581 struct iuu_private *priv = usb_get_serial_port_data(port);
582
583 dbg("%s - enter", __func__);
584
585 if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0)
586 return -EIO;
587
588 for (i = 0; i < 2; i++) {
589 status = bulk_immediate(port, &rxcmd, 1);
590 if (status != IUU_OPERATION_OK) {
591 dbg("%s - uart_flush_write error", __func__);
592 return status;
593 }
594
595 status = read_immediate(port, &priv->len, 1);
596 if (status != IUU_OPERATION_OK) {
597 dbg("%s - uart_flush_read error", __func__);
598 return status;
599 }
600
601 if (priv->len > 0) {
602 dbg("%s - uart_flush datalen is : %i ", __func__,
603 priv->len);
604 status = read_immediate(port, priv->buf, priv->len);
605 if (status != IUU_OPERATION_OK) {
606 dbg("%s - uart_flush_read error", __func__);
607 return status;
608 }
609 }
610 }
611 dbg("%s - uart_flush_read OK!", __func__);
612 iuu_led(port, 0, 0xF000, 0, 0xFF);
613 return status;
614 }
615
616 static void read_buf_callback(struct urb *urb)
617 {
618 struct usb_serial_port *port = urb->context;
619 unsigned char *data = urb->transfer_buffer;
620 struct tty_struct *tty;
621 dbg("%s - urb->status = %d", __func__, urb->status);
622
623 if (urb->status) {
624 dbg("%s - urb->status = %d", __func__, urb->status);
625 if (urb->status == -EPROTO) {
626 /* reschedule needed */
627 }
628 return;
629 }
630
631 dbg("%s - %i chars to write", __func__, urb->actual_length);
632 tty = port->port.tty;
633 if (data == NULL)
634 dbg("%s - data is NULL !!!", __func__);
635 if (tty && urb->actual_length && data) {
636 tty_insert_flip_string(tty, data, urb->actual_length);
637 tty_flip_buffer_push(tty);
638 }
639 iuu_led_activity_on(urb);
640 }
641
642 static int iuu_bulk_write(struct usb_serial_port *port)
643 {
644 struct iuu_private *priv = usb_get_serial_port_data(port);
645 unsigned long flags;
646 int result;
647 int i;
648 char *buf_ptr = port->write_urb->transfer_buffer;
649 dbg("%s - enter", __func__);
650
651 *buf_ptr++ = IUU_UART_ESC;
652 *buf_ptr++ = IUU_UART_TX;
653 *buf_ptr++ = priv->writelen;
654
655 memcpy(buf_ptr, priv->writebuf,
656 priv->writelen);
657 if (debug == 1) {
658 for (i = 0; i < priv->writelen; i++)
659 sprintf(priv->dbgbuf + i*2 ,
660 "%02X", priv->writebuf[i]);
661 priv->dbgbuf[priv->writelen+i*2] = 0;
662 dbg("%s - writing %i chars : %s", __func__,
663 priv->writelen, priv->dbgbuf);
664 }
665 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
666 usb_sndbulkpipe(port->serial->dev,
667 port->bulk_out_endpointAddress),
668 port->write_urb->transfer_buffer, priv->writelen + 3,
669 iuu_rxcmd, port);
670 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
671 spin_lock_irqsave(&priv->lock, flags);
672 priv->writelen = 0;
673 spin_unlock_irqrestore(&priv->lock, flags);
674 usb_serial_port_softint(port);
675 return result;
676 }
677
678 static int iuu_read_buf(struct usb_serial_port *port, int len)
679 {
680 int result;
681 dbg("%s - enter", __func__);
682
683 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
684 usb_rcvbulkpipe(port->serial->dev,
685 port->bulk_in_endpointAddress),
686 port->read_urb->transfer_buffer, len,
687 read_buf_callback, port);
688 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
689 return result;
690 }
691
692 static void iuu_uart_read_callback(struct urb *urb)
693 {
694 struct usb_serial_port *port = urb->context;
695 struct iuu_private *priv = usb_get_serial_port_data(port);
696 unsigned long flags;
697 int status;
698 int error = 0;
699 int len = 0;
700 unsigned char *data = urb->transfer_buffer;
701 priv->poll++;
702
703 dbg("%s - enter", __func__);
704
705 if (urb->status) {
706 dbg("%s - urb->status = %d", __func__, urb->status);
707 /* error stop all */
708 return;
709 }
710 if (data == NULL)
711 dbg("%s - data is NULL !!!", __func__);
712
713 if (urb->actual_length == 1 && data != NULL)
714 len = (int) data[0];
715
716 if (urb->actual_length > 1) {
717 dbg("%s - urb->actual_length = %i", __func__,
718 urb->actual_length);
719 error = 1;
720 return;
721 }
722 /* if len > 0 call readbuf */
723
724 if (len > 0 && error == 0) {
725 dbg("%s - call read buf - len to read is %i ",
726 __func__, len);
727 status = iuu_read_buf(port, len);
728 return;
729 }
730 /* need to update status ? */
731 if (priv->poll > 99) {
732 status = iuu_status(port);
733 priv->poll = 0;
734 return;
735 }
736
737 /* reset waiting ? */
738
739 if (priv->reset == 1) {
740 status = iuu_reset(port, 0xC);
741 return;
742 }
743 /* Writebuf is waiting */
744 spin_lock_irqsave(&priv->lock, flags);
745 if (priv->writelen > 0) {
746 spin_unlock_irqrestore(&priv->lock, flags);
747 status = iuu_bulk_write(port);
748 return;
749 }
750 spin_unlock_irqrestore(&priv->lock, flags);
751 /* if nothing to write call again rxcmd */
752 dbg("%s - rxcmd recall", __func__);
753 iuu_led_activity_off(urb);
754 }
755
756 static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port,
757 const u8 *buf, int count)
758 {
759 struct iuu_private *priv = usb_get_serial_port_data(port);
760 unsigned long flags;
761 dbg("%s - enter", __func__);
762
763 if (count > 256)
764 return -ENOMEM;
765
766 spin_lock_irqsave(&priv->lock, flags);
767 if (priv->writelen > 0) {
768 /* buffer already filled but not commited */
769 spin_unlock_irqrestore(&priv->lock, flags);
770 return 0;
771 }
772 /* fill the buffer */
773 memcpy(priv->writebuf, buf, count);
774 priv->writelen = count;
775 spin_unlock_irqrestore(&priv->lock, flags);
776
777 return count;
778 }
779
780 static void read_rxcmd_callback(struct urb *urb)
781 {
782 struct usb_serial_port *port = urb->context;
783 int result;
784 dbg("%s - enter", __func__);
785
786 dbg("%s - urb->status = %d", __func__, urb->status);
787
788 if (urb->status) {
789 dbg("%s - urb->status = %d", __func__, urb->status);
790 /* error stop all */
791 return;
792 }
793
794 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
795 usb_rcvbulkpipe(port->serial->dev,
796 port->bulk_in_endpointAddress),
797 port->read_urb->transfer_buffer, 256,
798 iuu_uart_read_callback, port);
799 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
800 dbg("%s - submit result = %d", __func__, result);
801 return;
802 }
803
804 static int iuu_uart_on(struct usb_serial_port *port)
805 {
806 int status;
807 u8 *buf;
808
809 buf = kmalloc(sizeof(u8) * 4, GFP_KERNEL);
810
811 if (!buf)
812 return -ENOMEM;
813
814 buf[0] = IUU_UART_ENABLE;
815 buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF);
816 buf[2] = (u8) (0x00FF & IUU_BAUD_9600);
817 buf[3] = (u8) (0x0F0 & IUU_TWO_STOP_BITS) | (0x07 & IUU_PARITY_EVEN);
818
819 status = bulk_immediate(port, buf, 4);
820 if (status != IUU_OPERATION_OK) {
821 dbg("%s - uart_on error", __func__);
822 goto uart_enable_failed;
823 }
824 /* iuu_reset() the card after iuu_uart_on() */
825 status = iuu_uart_flush(port);
826 if (status != IUU_OPERATION_OK)
827 dbg("%s - uart_flush error", __func__);
828 uart_enable_failed:
829 kfree(buf);
830 return status;
831 }
832
833 /* Diables the IUU UART (a.k.a. the Phoenix voiderface) */
834 static int iuu_uart_off(struct usb_serial_port *port)
835 {
836 int status;
837 u8 *buf;
838 buf = kmalloc(1, GFP_KERNEL);
839 if (!buf)
840 return -ENOMEM;
841 buf[0] = IUU_UART_DISABLE;
842
843 status = bulk_immediate(port, buf, 1);
844 if (status != IUU_OPERATION_OK)
845 dbg("%s - uart_off error", __func__);
846
847 kfree(buf);
848 return status;
849 }
850
851 static int iuu_uart_baud(struct usb_serial_port *port, u32 baud,
852 u32 *actual, u8 parity)
853 {
854 int status;
855 u8 *dataout;
856 u8 DataCount = 0;
857 u8 T1Frekvens = 0;
858 u8 T1reload = 0;
859 unsigned int T1FrekvensHZ = 0;
860
861 dataout = kmalloc(sizeof(u8) * 5, GFP_KERNEL);
862
863 if (!dataout)
864 return -ENOMEM;
865
866 if (baud < 1200 || baud > 230400) {
867 kfree(dataout);
868 return IUU_INVALID_PARAMETER;
869 }
870 if (baud > 977) {
871 T1Frekvens = 3;
872 T1FrekvensHZ = 500000;
873 }
874
875 if (baud > 3906) {
876 T1Frekvens = 2;
877 T1FrekvensHZ = 2000000;
878 }
879
880 if (baud > 11718) {
881 T1Frekvens = 1;
882 T1FrekvensHZ = 6000000;
883 }
884
885 if (baud > 46875) {
886 T1Frekvens = 0;
887 T1FrekvensHZ = 24000000;
888 }
889
890 T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2));
891
892 /* magic number here: ENTER_FIRMWARE_UPDATE; */
893 dataout[DataCount++] = IUU_UART_ESC;
894 /* magic number here: CHANGE_BAUD; */
895 dataout[DataCount++] = IUU_UART_CHANGE;
896 dataout[DataCount++] = T1Frekvens;
897 dataout[DataCount++] = T1reload;
898
899 *actual = (T1FrekvensHZ / (256 - T1reload)) / 2;
900
901 switch (parity & 0x0F) {
902 case IUU_PARITY_NONE:
903 dataout[DataCount++] = 0x00;
904 break;
905 case IUU_PARITY_EVEN:
906 dataout[DataCount++] = 0x01;
907 break;
908 case IUU_PARITY_ODD:
909 dataout[DataCount++] = 0x02;
910 break;
911 case IUU_PARITY_MARK:
912 dataout[DataCount++] = 0x03;
913 break;
914 case IUU_PARITY_SPACE:
915 dataout[DataCount++] = 0x04;
916 break;
917 default:
918 kfree(dataout);
919 return IUU_INVALID_PARAMETER;
920 break;
921 }
922
923 switch (parity & 0xF0) {
924 case IUU_ONE_STOP_BIT:
925 dataout[DataCount - 1] |= IUU_ONE_STOP_BIT;
926 break;
927
928 case IUU_TWO_STOP_BITS:
929 dataout[DataCount - 1] |= IUU_TWO_STOP_BITS;
930 break;
931 default:
932 kfree(dataout);
933 return IUU_INVALID_PARAMETER;
934 break;
935 }
936
937 status = bulk_immediate(port, dataout, DataCount);
938 if (status != IUU_OPERATION_OK)
939 dbg("%s - uart_off error", __func__);
940 kfree(dataout);
941 return status;
942 }
943
944 static int set_control_lines(struct usb_device *dev, u8 value)
945 {
946 return 0;
947 }
948
949 static void iuu_close(struct tty_struct *tty,
950 struct usb_serial_port *port, struct file *filp)
951 {
952 /* iuu_led (port,255,0,0,0); */
953 struct usb_serial *serial;
954 struct iuu_private *priv = usb_get_serial_port_data(port);
955 unsigned long flags;
956 unsigned int c_cflag;
957
958 serial = port->serial;
959 if (!serial)
960 return;
961
962 dbg("%s - port %d", __func__, port->number);
963
964 iuu_uart_off(port);
965 if (serial->dev) {
966 if (tty) {
967 c_cflag = tty->termios->c_cflag;
968 if (c_cflag & HUPCL) {
969 /* drop DTR and RTS */
970 priv = usb_get_serial_port_data(port);
971 spin_lock_irqsave(&priv->lock, flags);
972 priv->line_control = 0;
973 spin_unlock_irqrestore(&priv->lock, flags);
974 set_control_lines(port->serial->dev, 0);
975 }
976 }
977 /* free writebuf */
978 /* shutdown our urbs */
979 dbg("%s - shutting down urbs", __func__);
980 usb_kill_urb(port->write_urb);
981 usb_kill_urb(port->read_urb);
982 usb_kill_urb(port->interrupt_in_urb);
983 msleep(1000);
984 /* wait one second to free all buffers */
985 iuu_led(port, 0, 0, 0xF000, 0xFF);
986 msleep(1000);
987 usb_reset_device(port->serial->dev);
988 }
989 }
990
991 static int iuu_open(struct tty_struct *tty,
992 struct usb_serial_port *port, struct file *filp)
993 {
994 struct usb_serial *serial = port->serial;
995 u8 *buf;
996 int result;
997 u32 actual;
998 unsigned long flags;
999 struct iuu_private *priv = usb_get_serial_port_data(port);
1000
1001 dbg("%s - port %d", __func__, port->number);
1002 usb_clear_halt(serial->dev, port->write_urb->pipe);
1003 usb_clear_halt(serial->dev, port->read_urb->pipe);
1004
1005 buf = kmalloc(10, GFP_KERNEL);
1006 if (buf == NULL)
1007 return -ENOMEM;
1008
1009 /* fixup the endpoint buffer size */
1010 kfree(port->bulk_out_buffer);
1011 port->bulk_out_buffer = kmalloc(512, GFP_KERNEL);
1012 port->bulk_out_size = 512;
1013 kfree(port->bulk_in_buffer);
1014 port->bulk_in_buffer = kmalloc(512, GFP_KERNEL);
1015 port->bulk_in_size = 512;
1016
1017 if (!port->bulk_out_buffer || !port->bulk_in_buffer) {
1018 kfree(port->bulk_out_buffer);
1019 kfree(port->bulk_in_buffer);
1020 kfree(buf);
1021 return -ENOMEM;
1022 }
1023
1024 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1025 usb_sndbulkpipe(port->serial->dev,
1026 port->bulk_out_endpointAddress),
1027 port->bulk_out_buffer, 512,
1028 NULL, NULL);
1029
1030
1031 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
1032 usb_rcvbulkpipe(port->serial->dev,
1033 port->bulk_in_endpointAddress),
1034 port->bulk_in_buffer, 512,
1035 NULL, NULL);
1036
1037 /* set the termios structure */
1038 spin_lock_irqsave(&priv->lock, flags);
1039 if (tty && !priv->termios_initialized) {
1040 *(tty->termios) = tty_std_termios;
1041 tty->termios->c_cflag = CLOCAL | CREAD | CS8 | B9600
1042 | TIOCM_CTS | CSTOPB | PARENB;
1043 tty->termios->c_ispeed = 9600;
1044 tty->termios->c_ospeed = 9600;
1045 tty->termios->c_lflag = 0;
1046 tty->termios->c_oflag = 0;
1047 tty->termios->c_iflag = 0;
1048 priv->termios_initialized = 1;
1049 tty->low_latency = 1;
1050 priv->poll = 0;
1051 }
1052 spin_unlock_irqrestore(&priv->lock, flags);
1053
1054 /* initialize writebuf */
1055 #define FISH(a, b, c, d) do { \
1056 result = usb_control_msg(port->serial->dev, \
1057 usb_rcvctrlpipe(port->serial->dev, 0), \
1058 b, a, c, d, buf, 1, 1000); \
1059 dbg("0x%x:0x%x:0x%x:0x%x %d - %x", a, b, c, d, result, \
1060 buf[0]); } while (0);
1061
1062 #define SOUP(a, b, c, d) do { \
1063 result = usb_control_msg(port->serial->dev, \
1064 usb_sndctrlpipe(port->serial->dev, 0), \
1065 b, a, c, d, NULL, 0, 1000); \
1066 dbg("0x%x:0x%x:0x%x:0x%x %d", a, b, c, d, result); } while (0)
1067
1068 /* This is not UART related but IUU USB driver related or something */
1069 /* like that. Basically no IUU will accept any commands from the USB */
1070 /* host unless it has received the following message */
1071 /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */
1072
1073 SOUP(0x03, 0x02, 0x02, 0x0);
1074 kfree(buf);
1075 iuu_led(port, 0xF000, 0xF000, 0, 0xFF);
1076 iuu_uart_on(port);
1077 if (boost < 100)
1078 boost = 100;
1079 switch (clockmode) {
1080 case 2: /* 3.680 Mhz */
1081 iuu_clk(port, IUU_CLK_3680000 * boost / 100);
1082 result =
1083 iuu_uart_baud(port, 9600 * boost / 100, &actual,
1084 IUU_PARITY_EVEN);
1085 break;
1086 case 3: /* 6.00 Mhz */
1087 iuu_clk(port, IUU_CLK_6000000 * boost / 100);
1088 result =
1089 iuu_uart_baud(port, 16457 * boost / 100, &actual,
1090 IUU_PARITY_EVEN);
1091 break;
1092 default: /* 3.579 Mhz */
1093 iuu_clk(port, IUU_CLK_3579000 * boost / 100);
1094 result =
1095 iuu_uart_baud(port, 9600 * boost / 100, &actual,
1096 IUU_PARITY_EVEN);
1097 }
1098
1099 /* set the cardin cardout signals */
1100 switch (cdmode) {
1101 case 0:
1102 iuu_cardin = 0;
1103 iuu_cardout = 0;
1104 break;
1105 case 1:
1106 iuu_cardin = TIOCM_CD;
1107 iuu_cardout = 0;
1108 break;
1109 case 2:
1110 iuu_cardin = 0;
1111 iuu_cardout = TIOCM_CD;
1112 break;
1113 case 3:
1114 iuu_cardin = TIOCM_DSR;
1115 iuu_cardout = 0;
1116 break;
1117 case 4:
1118 iuu_cardin = 0;
1119 iuu_cardout = TIOCM_DSR;
1120 break;
1121 case 5:
1122 iuu_cardin = TIOCM_CTS;
1123 iuu_cardout = 0;
1124 break;
1125 case 6:
1126 iuu_cardin = 0;
1127 iuu_cardout = TIOCM_CTS;
1128 break;
1129 case 7:
1130 iuu_cardin = TIOCM_RNG;
1131 iuu_cardout = 0;
1132 break;
1133 case 8:
1134 iuu_cardin = 0;
1135 iuu_cardout = TIOCM_RNG;
1136 }
1137
1138 iuu_uart_flush(port);
1139
1140 dbg("%s - initialization done", __func__);
1141
1142 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
1143 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1144 usb_sndbulkpipe(port->serial->dev,
1145 port->bulk_out_endpointAddress),
1146 port->write_urb->transfer_buffer, 1,
1147 read_rxcmd_callback, port);
1148 result = usb_submit_urb(port->write_urb, GFP_KERNEL);
1149
1150 if (result) {
1151 dev_err(&port->dev, "%s - failed submitting read urb,"
1152 " error %d\n", __func__, result);
1153 iuu_close(tty, port, NULL);
1154 return -EPROTO;
1155 } else {
1156 dbg("%s - rxcmd OK", __func__);
1157 }
1158 return result;
1159 }
1160
1161 static struct usb_serial_driver iuu_device = {
1162 .driver = {
1163 .owner = THIS_MODULE,
1164 .name = "iuu_phoenix",
1165 },
1166 .id_table = id_table,
1167 .num_ports = 1,
1168 .open = iuu_open,
1169 .close = iuu_close,
1170 .write = iuu_uart_write,
1171 .read_bulk_callback = iuu_uart_read_callback,
1172 .tiocmget = iuu_tiocmget,
1173 .tiocmset = iuu_tiocmset,
1174 .attach = iuu_startup,
1175 .shutdown = iuu_shutdown,
1176 };
1177
1178 static int __init iuu_init(void)
1179 {
1180 int retval;
1181 retval = usb_serial_register(&iuu_device);
1182 if (retval)
1183 goto failed_usb_serial_register;
1184 retval = usb_register(&iuu_driver);
1185 if (retval)
1186 goto failed_usb_register;
1187 info(DRIVER_DESC " " DRIVER_VERSION);
1188 return 0;
1189 failed_usb_register:
1190 usb_serial_deregister(&iuu_device);
1191 failed_usb_serial_register:
1192 return retval;
1193 }
1194
1195 static void __exit iuu_exit(void)
1196 {
1197 usb_deregister(&iuu_driver);
1198 usb_serial_deregister(&iuu_device);
1199 }
1200
1201 module_init(iuu_init);
1202 module_exit(iuu_exit);
1203
1204 MODULE_AUTHOR("Alain Degreffe eczema@ecze.com");
1205
1206 MODULE_DESCRIPTION(DRIVER_DESC);
1207 MODULE_LICENSE("GPL");
1208
1209 MODULE_VERSION(DRIVER_VERSION);
1210 module_param(debug, bool, S_IRUGO | S_IWUSR);
1211 MODULE_PARM_DESC(debug, "Debug enabled or not");
1212
1213 module_param(xmas, bool, S_IRUGO | S_IWUSR);
1214 MODULE_PARM_DESC(xmas, "xmas color enabled or not");
1215
1216 module_param(boost, int, S_IRUGO | S_IWUSR);
1217 MODULE_PARM_DESC(boost, "overclock boost percent 100 to 500");
1218
1219 module_param(clockmode, int, S_IRUGO | S_IWUSR);
1220 MODULE_PARM_DESC(clockmode, "1=3Mhz579,2=3Mhz680,3=6Mhz");
1221
1222 module_param(cdmode, int, S_IRUGO | S_IWUSR);
1223 MODULE_PARM_DESC(cdmode, "Card detect mode 0=none, 1=CD, 2=!CD, 3=DSR, "
1224 "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree