]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - drivers/usb/serial/iuu_phoenix.c
projects / mirror_ubuntu-bionic-kernel.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
usb: quirks: add delay quirks for Corsair Strafe
[mirror_ubuntu-bionic-kernel.git] / drivers / usb / serial / iuu_phoenix.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Infinity Unlimited USB Phoenix driver
4 *
5 * Copyright (C) 2010 James Courtier-Dutton (James@superbug.co.uk)
6
7 * Copyright (C) 2007 Alain Degreffe (eczema@ecze.com)
8 *
9 * Original code taken from iuutool (Copyright (C) 2006 Juan Carlos Borrás)
10 *
11 * And tested with help of WB Electronics
12 */
13 #include <linux/kernel.h>
14 #include <linux/errno.h>
15 #include <linux/slab.h>
16 #include <linux/tty.h>
17 #include <linux/tty_driver.h>
18 #include <linux/tty_flip.h>
19 #include <linux/serial.h>
20 #include <linux/module.h>
21 #include <linux/moduleparam.h>
22 #include <linux/spinlock.h>
23 #include <linux/uaccess.h>
24 #include <linux/usb.h>
25 #include <linux/usb/serial.h>
26 #include "iuu_phoenix.h"
27 #include <linux/random.h>
28
29 #define DRIVER_DESC "Infinity USB Unlimited Phoenix driver"
30
31 static const struct usb_device_id id_table[] = {
32 {USB_DEVICE(IUU_USB_VENDOR_ID, IUU_USB_PRODUCT_ID)},
33 {} /* Terminating entry */
34 };
35 MODULE_DEVICE_TABLE(usb, id_table);
36
37 /* turbo parameter */
38 static int boost = 100;
39 static int clockmode = 1;
40 static int cdmode = 1;
41 static int iuu_cardin;
42 static int iuu_cardout;
43 static bool xmas;
44 static int vcc_default = 5;
45
46 static int iuu_create_sysfs_attrs(struct usb_serial_port *port);
47 static int iuu_remove_sysfs_attrs(struct usb_serial_port *port);
48 static void read_rxcmd_callback(struct urb *urb);
49
50 struct iuu_private {
51 spinlock_t lock; /* store irq state */
52 u8 line_status;
53 int tiostatus; /* store IUART SIGNAL for tiocmget call */
54 u8 reset; /* if 1 reset is needed */
55 int poll; /* number of poll */
56 u8 *writebuf; /* buffer for writing to device */
57 int writelen; /* num of byte to write to device */
58 u8 *buf; /* used for initialize speed */
59 u8 len;
60 int vcc; /* vcc (either 3 or 5 V) */
61 u32 baud;
62 u32 boost;
63 u32 clk;
64 };
65
66 static int iuu_port_probe(struct usb_serial_port *port)
67 {
68 struct iuu_private *priv;
69 int ret;
70
71 priv = kzalloc(sizeof(struct iuu_private), GFP_KERNEL);
72 if (!priv)
73 return -ENOMEM;
74
75 priv->buf = kzalloc(256, GFP_KERNEL);
76 if (!priv->buf) {
77 kfree(priv);
78 return -ENOMEM;
79 }
80
81 priv->writebuf = kzalloc(256, GFP_KERNEL);
82 if (!priv->writebuf) {
83 kfree(priv->buf);
84 kfree(priv);
85 return -ENOMEM;
86 }
87
88 priv->vcc = vcc_default;
89 spin_lock_init(&priv->lock);
90
91 usb_set_serial_port_data(port, priv);
92
93 ret = iuu_create_sysfs_attrs(port);
94 if (ret) {
95 kfree(priv->writebuf);
96 kfree(priv->buf);
97 kfree(priv);
98 return ret;
99 }
100
101 return 0;
102 }
103
104 static int iuu_port_remove(struct usb_serial_port *port)
105 {
106 struct iuu_private *priv = usb_get_serial_port_data(port);
107
108 iuu_remove_sysfs_attrs(port);
109 kfree(priv->writebuf);
110 kfree(priv->buf);
111 kfree(priv);
112
113 return 0;
114 }
115
116 static int iuu_tiocmset(struct tty_struct *tty,
117 unsigned int set, unsigned int clear)
118 {
119 struct usb_serial_port *port = tty->driver_data;
120 struct iuu_private *priv = usb_get_serial_port_data(port);
121 unsigned long flags;
122
123 /* FIXME: locking on tiomstatus */
124 dev_dbg(&port->dev, "%s msg : SET = 0x%04x, CLEAR = 0x%04x\n",
125 __func__, set, clear);
126
127 spin_lock_irqsave(&priv->lock, flags);
128
129 if ((set & TIOCM_RTS) && !(priv->tiostatus == TIOCM_RTS)) {
130 dev_dbg(&port->dev, "%s TIOCMSET RESET called !!!\n", __func__);
131 priv->reset = 1;
132 }
133 if (set & TIOCM_RTS)
134 priv->tiostatus = TIOCM_RTS;
135
136 spin_unlock_irqrestore(&priv->lock, flags);
137 return 0;
138 }
139
140 /* This is used to provide a carrier detect mechanism
141 * When a card is present, the response is 0x00
142 * When no card , the reader respond with TIOCM_CD
143 * This is known as CD autodetect mechanism
144 */
145 static int iuu_tiocmget(struct tty_struct *tty)
146 {
147 struct usb_serial_port *port = tty->driver_data;
148 struct iuu_private *priv = usb_get_serial_port_data(port);
149 unsigned long flags;
150 int rc;
151
152 spin_lock_irqsave(&priv->lock, flags);
153 rc = priv->tiostatus;
154 spin_unlock_irqrestore(&priv->lock, flags);
155
156 return rc;
157 }
158
159 static void iuu_rxcmd(struct urb *urb)
160 {
161 struct usb_serial_port *port = urb->context;
162 int result;
163 int status = urb->status;
164
165 if (status) {
166 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
167 /* error stop all */
168 return;
169 }
170
171
172 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
173 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
174 usb_sndbulkpipe(port->serial->dev,
175 port->bulk_out_endpointAddress),
176 port->write_urb->transfer_buffer, 1,
177 read_rxcmd_callback, port);
178 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
179 }
180
181 static int iuu_reset(struct usb_serial_port *port, u8 wt)
182 {
183 struct iuu_private *priv = usb_get_serial_port_data(port);
184 int result;
185 char *buf_ptr = port->write_urb->transfer_buffer;
186
187 /* Prepare the reset sequence */
188
189 *buf_ptr++ = IUU_RST_SET;
190 *buf_ptr++ = IUU_DELAY_MS;
191 *buf_ptr++ = wt;
192 *buf_ptr = IUU_RST_CLEAR;
193
194 /* send the sequence */
195
196 usb_fill_bulk_urb(port->write_urb,
197 port->serial->dev,
198 usb_sndbulkpipe(port->serial->dev,
199 port->bulk_out_endpointAddress),
200 port->write_urb->transfer_buffer, 4, iuu_rxcmd, port);
201 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
202 priv->reset = 0;
203 return result;
204 }
205
206 /* Status Function
207 * Return value is
208 * 0x00 = no card
209 * 0x01 = smartcard
210 * 0x02 = sim card
211 */
212 static void iuu_update_status_callback(struct urb *urb)
213 {
214 struct usb_serial_port *port = urb->context;
215 struct iuu_private *priv = usb_get_serial_port_data(port);
216 u8 *st;
217 int status = urb->status;
218
219 if (status) {
220 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
221 /* error stop all */
222 return;
223 }
224
225 st = urb->transfer_buffer;
226 dev_dbg(&port->dev, "%s - enter\n", __func__);
227 if (urb->actual_length == 1) {
228 switch (st[0]) {
229 case 0x1:
230 priv->tiostatus = iuu_cardout;
231 break;
232 case 0x0:
233 priv->tiostatus = iuu_cardin;
234 break;
235 default:
236 priv->tiostatus = iuu_cardin;
237 }
238 }
239 iuu_rxcmd(urb);
240 }
241
242 static void iuu_status_callback(struct urb *urb)
243 {
244 struct usb_serial_port *port = urb->context;
245 int result;
246 int status = urb->status;
247
248 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
249 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
250 usb_rcvbulkpipe(port->serial->dev,
251 port->bulk_in_endpointAddress),
252 port->read_urb->transfer_buffer, 256,
253 iuu_update_status_callback, port);
254 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
255 }
256
257 static int iuu_status(struct usb_serial_port *port)
258 {
259 int result;
260
261 memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1);
262 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
263 usb_sndbulkpipe(port->serial->dev,
264 port->bulk_out_endpointAddress),
265 port->write_urb->transfer_buffer, 1,
266 iuu_status_callback, port);
267 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
268 return result;
269
270 }
271
272 static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
273 {
274 int status;
275 struct usb_serial *serial = port->serial;
276 int actual = 0;
277
278 /* send the data out the bulk port */
279
280 status =
281 usb_bulk_msg(serial->dev,
282 usb_sndbulkpipe(serial->dev,
283 port->bulk_out_endpointAddress), buf,
284 count, &actual, 1000);
285
286 if (status != IUU_OPERATION_OK)
287 dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status);
288 else
289 dev_dbg(&port->dev, "%s - write OK !\n", __func__);
290 return status;
291 }
292
293 static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
294 {
295 int status;
296 struct usb_serial *serial = port->serial;
297 int actual = 0;
298
299 /* send the data out the bulk port */
300 status =
301 usb_bulk_msg(serial->dev,
302 usb_rcvbulkpipe(serial->dev,
303 port->bulk_in_endpointAddress), buf,
304 count, &actual, 1000);
305
306 if (status != IUU_OPERATION_OK)
307 dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status);
308 else
309 dev_dbg(&port->dev, "%s - read OK !\n", __func__);
310 return status;
311 }
312
313 static int iuu_led(struct usb_serial_port *port, unsigned int R,
314 unsigned int G, unsigned int B, u8 f)
315 {
316 int status;
317 u8 *buf;
318 buf = kmalloc(8, GFP_KERNEL);
319 if (!buf)
320 return -ENOMEM;
321
322 buf[0] = IUU_SET_LED;
323 buf[1] = R & 0xFF;
324 buf[2] = (R >> 8) & 0xFF;
325 buf[3] = G & 0xFF;
326 buf[4] = (G >> 8) & 0xFF;
327 buf[5] = B & 0xFF;
328 buf[6] = (B >> 8) & 0xFF;
329 buf[7] = f;
330 status = bulk_immediate(port, buf, 8);
331 kfree(buf);
332 if (status != IUU_OPERATION_OK)
333 dev_dbg(&port->dev, "%s - led error status = %2x\n", __func__, status);
334 else
335 dev_dbg(&port->dev, "%s - led OK !\n", __func__);
336 return IUU_OPERATION_OK;
337 }
338
339 static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1,
340 u8 b2, u8 freq)
341 {
342 *buf++ = IUU_SET_LED;
343 *buf++ = r1;
344 *buf++ = r2;
345 *buf++ = g1;
346 *buf++ = g2;
347 *buf++ = b1;
348 *buf++ = b2;
349 *buf = freq;
350 }
351
352 static void iuu_led_activity_on(struct urb *urb)
353 {
354 struct usb_serial_port *port = urb->context;
355 int result;
356 char *buf_ptr = port->write_urb->transfer_buffer;
357 *buf_ptr++ = IUU_SET_LED;
358 if (xmas) {
359 get_random_bytes(buf_ptr, 6);
360 *(buf_ptr+7) = 1;
361 } else {
362 iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255);
363 }
364
365 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
366 usb_sndbulkpipe(port->serial->dev,
367 port->bulk_out_endpointAddress),
368 port->write_urb->transfer_buffer, 8 ,
369 iuu_rxcmd, port);
370 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
371 }
372
373 static void iuu_led_activity_off(struct urb *urb)
374 {
375 struct usb_serial_port *port = urb->context;
376 int result;
377 char *buf_ptr = port->write_urb->transfer_buffer;
378 if (xmas) {
379 iuu_rxcmd(urb);
380 return;
381 } else {
382 *buf_ptr++ = IUU_SET_LED;
383 iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255);
384 }
385 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
386 usb_sndbulkpipe(port->serial->dev,
387 port->bulk_out_endpointAddress),
388 port->write_urb->transfer_buffer, 8 ,
389 iuu_rxcmd, port);
390 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
391 }
392
393
394
395 static int iuu_clk(struct usb_serial_port *port, int dwFrq)
396 {
397 int status;
398 struct iuu_private *priv = usb_get_serial_port_data(port);
399 int Count = 0;
400 u8 FrqGenAdr = 0x69;
401 u8 DIV = 0; /* 8bit */
402 u8 XDRV = 0; /* 8bit */
403 u8 PUMP = 0; /* 3bit */
404 u8 PBmsb = 0; /* 2bit */
405 u8 PBlsb = 0; /* 8bit */
406 u8 PO = 0; /* 1bit */
407 u8 Q = 0; /* 7bit */
408 /* 24bit = 3bytes */
409 unsigned int P = 0;
410 unsigned int P2 = 0;
411 int frq = (int)dwFrq;
412
413 if (frq == 0) {
414 priv->buf[Count++] = IUU_UART_WRITE_I2C;
415 priv->buf[Count++] = FrqGenAdr << 1;
416 priv->buf[Count++] = 0x09;
417 priv->buf[Count++] = 0x00;
418
419 status = bulk_immediate(port, (u8 *) priv->buf, Count);
420 if (status != 0) {
421 dev_dbg(&port->dev, "%s - write error\n", __func__);
422 return status;
423 }
424 } else if (frq == 3579000) {
425 DIV = 100;
426 P = 1193;
427 Q = 40;
428 XDRV = 0;
429 } else if (frq == 3680000) {
430 DIV = 105;
431 P = 161;
432 Q = 5;
433 XDRV = 0;
434 } else if (frq == 6000000) {
435 DIV = 66;
436 P = 66;
437 Q = 2;
438 XDRV = 0x28;
439 } else {
440 unsigned int result = 0;
441 unsigned int tmp = 0;
442 unsigned int check;
443 unsigned int check2;
444 char found = 0x00;
445 unsigned int lQ = 2;
446 unsigned int lP = 2055;
447 unsigned int lDiv = 4;
448
449 for (lQ = 2; lQ <= 47 && !found; lQ++)
450 for (lP = 2055; lP >= 8 && !found; lP--)
451 for (lDiv = 4; lDiv <= 127 && !found; lDiv++) {
452 tmp = (12000000 / lDiv) * (lP / lQ);
453 if (abs((int)(tmp - frq)) <
454 abs((int)(frq - result))) {
455 check2 = (12000000 / lQ);
456 if (check2 < 250000)
457 continue;
458 check = (12000000 / lQ) * lP;
459 if (check > 400000000)
460 continue;
461 if (check < 100000000)
462 continue;
463 if (lDiv < 4 || lDiv > 127)
464 continue;
465 result = tmp;
466 P = lP;
467 DIV = lDiv;
468 Q = lQ;
469 if (result == frq)
470 found = 0x01;
471 }
472 }
473 }
474 P2 = ((P - PO) / 2) - 4;
475 DIV = DIV;
476 PUMP = 0x04;
477 PBmsb = (P2 >> 8 & 0x03);
478 PBlsb = P2 & 0xFF;
479 PO = (P >> 10) & 0x01;
480 Q = Q - 2;
481
482 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
483 priv->buf[Count++] = FrqGenAdr << 1;
484 priv->buf[Count++] = 0x09;
485 priv->buf[Count++] = 0x20; /* Adr = 0x09 */
486 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
487 priv->buf[Count++] = FrqGenAdr << 1;
488 priv->buf[Count++] = 0x0C;
489 priv->buf[Count++] = DIV; /* Adr = 0x0C */
490 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
491 priv->buf[Count++] = FrqGenAdr << 1;
492 priv->buf[Count++] = 0x12;
493 priv->buf[Count++] = XDRV; /* Adr = 0x12 */
494 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
495 priv->buf[Count++] = FrqGenAdr << 1;
496 priv->buf[Count++] = 0x13;
497 priv->buf[Count++] = 0x6B; /* Adr = 0x13 */
498 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
499 priv->buf[Count++] = FrqGenAdr << 1;
500 priv->buf[Count++] = 0x40;
501 priv->buf[Count++] = (0xC0 | ((PUMP & 0x07) << 2)) |
502 (PBmsb & 0x03); /* Adr = 0x40 */
503 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
504 priv->buf[Count++] = FrqGenAdr << 1;
505 priv->buf[Count++] = 0x41;
506 priv->buf[Count++] = PBlsb; /* Adr = 0x41 */
507 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
508 priv->buf[Count++] = FrqGenAdr << 1;
509 priv->buf[Count++] = 0x42;
510 priv->buf[Count++] = Q | (((PO & 0x01) << 7)); /* Adr = 0x42 */
511 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
512 priv->buf[Count++] = FrqGenAdr << 1;
513 priv->buf[Count++] = 0x44;
514 priv->buf[Count++] = (char)0xFF; /* Adr = 0x44 */
515 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
516 priv->buf[Count++] = FrqGenAdr << 1;
517 priv->buf[Count++] = 0x45;
518 priv->buf[Count++] = (char)0xFE; /* Adr = 0x45 */
519 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
520 priv->buf[Count++] = FrqGenAdr << 1;
521 priv->buf[Count++] = 0x46;
522 priv->buf[Count++] = 0x7F; /* Adr = 0x46 */
523 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */
524 priv->buf[Count++] = FrqGenAdr << 1;
525 priv->buf[Count++] = 0x47;
526 priv->buf[Count++] = (char)0x84; /* Adr = 0x47 */
527
528 status = bulk_immediate(port, (u8 *) priv->buf, Count);
529 if (status != IUU_OPERATION_OK)
530 dev_dbg(&port->dev, "%s - write error\n", __func__);
531 return status;
532 }
533
534 static int iuu_uart_flush(struct usb_serial_port *port)
535 {
536 struct device *dev = &port->dev;
537 int i;
538 int status;
539 u8 rxcmd = IUU_UART_RX;
540 struct iuu_private *priv = usb_get_serial_port_data(port);
541
542 if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0)
543 return -EIO;
544
545 for (i = 0; i < 2; i++) {
546 status = bulk_immediate(port, &rxcmd, 1);
547 if (status != IUU_OPERATION_OK) {
548 dev_dbg(dev, "%s - uart_flush_write error\n", __func__);
549 return status;
550 }
551
552 status = read_immediate(port, &priv->len, 1);
553 if (status != IUU_OPERATION_OK) {
554 dev_dbg(dev, "%s - uart_flush_read error\n", __func__);
555 return status;
556 }
557
558 if (priv->len > 0) {
559 dev_dbg(dev, "%s - uart_flush datalen is : %i\n", __func__, priv->len);
560 status = read_immediate(port, priv->buf, priv->len);
561 if (status != IUU_OPERATION_OK) {
562 dev_dbg(dev, "%s - uart_flush_read error\n", __func__);
563 return status;
564 }
565 }
566 }
567 dev_dbg(dev, "%s - uart_flush_read OK!\n", __func__);
568 iuu_led(port, 0, 0xF000, 0, 0xFF);
569 return status;
570 }
571
572 static void read_buf_callback(struct urb *urb)
573 {
574 struct usb_serial_port *port = urb->context;
575 unsigned char *data = urb->transfer_buffer;
576 int status = urb->status;
577
578 if (status) {
579 if (status == -EPROTO) {
580 /* reschedule needed */
581 }
582 return;
583 }
584
585 dev_dbg(&port->dev, "%s - %i chars to write\n", __func__, urb->actual_length);
586
587 if (urb->actual_length) {
588 tty_insert_flip_string(&port->port, data, urb->actual_length);
589 tty_flip_buffer_push(&port->port);
590 }
591 iuu_led_activity_on(urb);
592 }
593
594 static int iuu_bulk_write(struct usb_serial_port *port)
595 {
596 struct iuu_private *priv = usb_get_serial_port_data(port);
597 unsigned long flags;
598 int result;
599 int buf_len;
600 char *buf_ptr = port->write_urb->transfer_buffer;
601
602 spin_lock_irqsave(&priv->lock, flags);
603 *buf_ptr++ = IUU_UART_ESC;
604 *buf_ptr++ = IUU_UART_TX;
605 *buf_ptr++ = priv->writelen;
606
607 memcpy(buf_ptr, priv->writebuf, priv->writelen);
608 buf_len = priv->writelen;
609 priv->writelen = 0;
610 spin_unlock_irqrestore(&priv->lock, flags);
611 dev_dbg(&port->dev, "%s - writing %i chars : %*ph\n", __func__,
612 buf_len, buf_len, buf_ptr);
613 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
614 usb_sndbulkpipe(port->serial->dev,
615 port->bulk_out_endpointAddress),
616 port->write_urb->transfer_buffer, buf_len + 3,
617 iuu_rxcmd, port);
618 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
619 usb_serial_port_softint(port);
620 return result;
621 }
622
623 static int iuu_read_buf(struct usb_serial_port *port, int len)
624 {
625 int result;
626
627 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
628 usb_rcvbulkpipe(port->serial->dev,
629 port->bulk_in_endpointAddress),
630 port->read_urb->transfer_buffer, len,
631 read_buf_callback, port);
632 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
633 return result;
634 }
635
636 static void iuu_uart_read_callback(struct urb *urb)
637 {
638 struct usb_serial_port *port = urb->context;
639 struct iuu_private *priv = usb_get_serial_port_data(port);
640 unsigned long flags;
641 int status = urb->status;
642 int error = 0;
643 int len = 0;
644 unsigned char *data = urb->transfer_buffer;
645 priv->poll++;
646
647 if (status) {
648 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
649 /* error stop all */
650 return;
651 }
652
653 if (urb->actual_length == 1)
654 len = (int) data[0];
655
656 if (urb->actual_length > 1) {
657 dev_dbg(&port->dev, "%s - urb->actual_length = %i\n", __func__,
658 urb->actual_length);
659 error = 1;
660 return;
661 }
662 /* if len > 0 call readbuf */
663
664 if (len > 0 && error == 0) {
665 dev_dbg(&port->dev, "%s - call read buf - len to read is %i\n",
666 __func__, len);
667 status = iuu_read_buf(port, len);
668 return;
669 }
670 /* need to update status ? */
671 if (priv->poll > 99) {
672 status = iuu_status(port);
673 priv->poll = 0;
674 return;
675 }
676
677 /* reset waiting ? */
678
679 if (priv->reset == 1) {
680 status = iuu_reset(port, 0xC);
681 return;
682 }
683 /* Writebuf is waiting */
684 spin_lock_irqsave(&priv->lock, flags);
685 if (priv->writelen > 0) {
686 spin_unlock_irqrestore(&priv->lock, flags);
687 status = iuu_bulk_write(port);
688 return;
689 }
690 spin_unlock_irqrestore(&priv->lock, flags);
691 /* if nothing to write call again rxcmd */
692 dev_dbg(&port->dev, "%s - rxcmd recall\n", __func__);
693 iuu_led_activity_off(urb);
694 }
695
696 static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port,
697 const u8 *buf, int count)
698 {
699 struct iuu_private *priv = usb_get_serial_port_data(port);
700 unsigned long flags;
701
702 if (count > 256)
703 return -ENOMEM;
704
705 spin_lock_irqsave(&priv->lock, flags);
706
707 /* fill the buffer */
708 memcpy(priv->writebuf + priv->writelen, buf, count);
709 priv->writelen += count;
710 spin_unlock_irqrestore(&priv->lock, flags);
711
712 return count;
713 }
714
715 static void read_rxcmd_callback(struct urb *urb)
716 {
717 struct usb_serial_port *port = urb->context;
718 int result;
719 int status = urb->status;
720
721 if (status) {
722 /* error stop all */
723 return;
724 }
725
726 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
727 usb_rcvbulkpipe(port->serial->dev,
728 port->bulk_in_endpointAddress),
729 port->read_urb->transfer_buffer, 256,
730 iuu_uart_read_callback, port);
731 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
732 dev_dbg(&port->dev, "%s - submit result = %d\n", __func__, result);
733 }
734
735 static int iuu_uart_on(struct usb_serial_port *port)
736 {
737 int status;
738 u8 *buf;
739
740 buf = kmalloc(sizeof(u8) * 4, GFP_KERNEL);
741
742 if (!buf)
743 return -ENOMEM;
744
745 buf[0] = IUU_UART_ENABLE;
746 buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF);
747 buf[2] = (u8) (0x00FF & IUU_BAUD_9600);
748 buf[3] = (u8) (0x0F0 & IUU_ONE_STOP_BIT) | (0x07 & IUU_PARITY_EVEN);
749
750 status = bulk_immediate(port, buf, 4);
751 if (status != IUU_OPERATION_OK) {
752 dev_dbg(&port->dev, "%s - uart_on error\n", __func__);
753 goto uart_enable_failed;
754 }
755 /* iuu_reset() the card after iuu_uart_on() */
756 status = iuu_uart_flush(port);
757 if (status != IUU_OPERATION_OK)
758 dev_dbg(&port->dev, "%s - uart_flush error\n", __func__);
759 uart_enable_failed:
760 kfree(buf);
761 return status;
762 }
763
764 /* Disables the IUU UART (a.k.a. the Phoenix voiderface) */
765 static int iuu_uart_off(struct usb_serial_port *port)
766 {
767 int status;
768 u8 *buf;
769 buf = kmalloc(1, GFP_KERNEL);
770 if (!buf)
771 return -ENOMEM;
772 buf[0] = IUU_UART_DISABLE;
773
774 status = bulk_immediate(port, buf, 1);
775 if (status != IUU_OPERATION_OK)
776 dev_dbg(&port->dev, "%s - uart_off error\n", __func__);
777
778 kfree(buf);
779 return status;
780 }
781
782 static int iuu_uart_baud(struct usb_serial_port *port, u32 baud_base,
783 u32 *actual, u8 parity)
784 {
785 int status;
786 u32 baud;
787 u8 *dataout;
788 u8 DataCount = 0;
789 u8 T1Frekvens = 0;
790 u8 T1reload = 0;
791 unsigned int T1FrekvensHZ = 0;
792
793 dev_dbg(&port->dev, "%s - enter baud_base=%d\n", __func__, baud_base);
794 dataout = kmalloc(sizeof(u8) * 5, GFP_KERNEL);
795
796 if (!dataout)
797 return -ENOMEM;
798 /*baud = (((priv->clk / 35) * baud_base) / 100000); */
799 baud = baud_base;
800
801 if (baud < 1200 || baud > 230400) {
802 kfree(dataout);
803 return IUU_INVALID_PARAMETER;
804 }
805 if (baud > 977) {
806 T1Frekvens = 3;
807 T1FrekvensHZ = 500000;
808 }
809
810 if (baud > 3906) {
811 T1Frekvens = 2;
812 T1FrekvensHZ = 2000000;
813 }
814
815 if (baud > 11718) {
816 T1Frekvens = 1;
817 T1FrekvensHZ = 6000000;
818 }
819
820 if (baud > 46875) {
821 T1Frekvens = 0;
822 T1FrekvensHZ = 24000000;
823 }
824
825 T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2));
826
827 /* magic number here: ENTER_FIRMWARE_UPDATE; */
828 dataout[DataCount++] = IUU_UART_ESC;
829 /* magic number here: CHANGE_BAUD; */
830 dataout[DataCount++] = IUU_UART_CHANGE;
831 dataout[DataCount++] = T1Frekvens;
832 dataout[DataCount++] = T1reload;
833
834 *actual = (T1FrekvensHZ / (256 - T1reload)) / 2;
835
836 switch (parity & 0x0F) {
837 case IUU_PARITY_NONE:
838 dataout[DataCount++] = 0x00;
839 break;
840 case IUU_PARITY_EVEN:
841 dataout[DataCount++] = 0x01;
842 break;
843 case IUU_PARITY_ODD:
844 dataout[DataCount++] = 0x02;
845 break;
846 case IUU_PARITY_MARK:
847 dataout[DataCount++] = 0x03;
848 break;
849 case IUU_PARITY_SPACE:
850 dataout[DataCount++] = 0x04;
851 break;
852 default:
853 kfree(dataout);
854 return IUU_INVALID_PARAMETER;
855 break;
856 }
857
858 switch (parity & 0xF0) {
859 case IUU_ONE_STOP_BIT:
860 dataout[DataCount - 1] |= IUU_ONE_STOP_BIT;
861 break;
862
863 case IUU_TWO_STOP_BITS:
864 dataout[DataCount - 1] |= IUU_TWO_STOP_BITS;
865 break;
866 default:
867 kfree(dataout);
868 return IUU_INVALID_PARAMETER;
869 break;
870 }
871
872 status = bulk_immediate(port, dataout, DataCount);
873 if (status != IUU_OPERATION_OK)
874 dev_dbg(&port->dev, "%s - uart_off error\n", __func__);
875 kfree(dataout);
876 return status;
877 }
878
879 static void iuu_set_termios(struct tty_struct *tty,
880 struct usb_serial_port *port, struct ktermios *old_termios)
881 {
882 const u32 supported_mask = CMSPAR|PARENB|PARODD;
883 struct iuu_private *priv = usb_get_serial_port_data(port);
884 unsigned int cflag = tty->termios.c_cflag;
885 int status;
886 u32 actual;
887 u32 parity;
888 int csize = CS7;
889 int baud;
890 u32 newval = cflag & supported_mask;
891
892 /* Just use the ospeed. ispeed should be the same. */
893 baud = tty->termios.c_ospeed;
894
895 dev_dbg(&port->dev, "%s - enter c_ospeed or baud=%d\n", __func__, baud);
896
897 /* compute the parity parameter */
898 parity = 0;
899 if (cflag & CMSPAR) { /* Using mark space */
900 if (cflag & PARODD)
901 parity |= IUU_PARITY_SPACE;
902 else
903 parity |= IUU_PARITY_MARK;
904 } else if (!(cflag & PARENB)) {
905 parity |= IUU_PARITY_NONE;
906 csize = CS8;
907 } else if (cflag & PARODD)
908 parity |= IUU_PARITY_ODD;
909 else
910 parity |= IUU_PARITY_EVEN;
911
912 parity |= (cflag & CSTOPB ? IUU_TWO_STOP_BITS : IUU_ONE_STOP_BIT);
913
914 /* set it */
915 status = iuu_uart_baud(port,
916 baud * priv->boost / 100,
917 &actual, parity);
918
919 /* set the termios value to the real one, so the user now what has
920 * changed. We support few fields so its easies to copy the old hw
921 * settings back over and then adjust them
922 */
923 if (old_termios)
924 tty_termios_copy_hw(&tty->termios, old_termios);
925 if (status != 0) /* Set failed - return old bits */
926 return;
927 /* Re-encode speed, parity and csize */
928 tty_encode_baud_rate(tty, baud, baud);
929 tty->termios.c_cflag &= ~(supported_mask|CSIZE);
930 tty->termios.c_cflag |= newval | csize;
931 }
932
933 static void iuu_close(struct usb_serial_port *port)
934 {
935 /* iuu_led (port,255,0,0,0); */
936
937 iuu_uart_off(port);
938
939 usb_kill_urb(port->write_urb);
940 usb_kill_urb(port->read_urb);
941
942 iuu_led(port, 0, 0, 0xF000, 0xFF);
943 }
944
945 static void iuu_init_termios(struct tty_struct *tty)
946 {
947 tty->termios = tty_std_termios;
948 tty->termios.c_cflag = CLOCAL | CREAD | CS8 | B9600
949 | TIOCM_CTS | CSTOPB | PARENB;
950 tty->termios.c_ispeed = 9600;
951 tty->termios.c_ospeed = 9600;
952 tty->termios.c_lflag = 0;
953 tty->termios.c_oflag = 0;
954 tty->termios.c_iflag = 0;
955 }
956
957 static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port)
958 {
959 struct usb_serial *serial = port->serial;
960 struct device *dev = &port->dev;
961 int result;
962 int baud;
963 u32 actual;
964 struct iuu_private *priv = usb_get_serial_port_data(port);
965
966 baud = tty->termios.c_ospeed;
967 tty->termios.c_ispeed = baud;
968 /* Re-encode speed */
969 tty_encode_baud_rate(tty, baud, baud);
970
971 dev_dbg(dev, "%s - baud %d\n", __func__, baud);
972 usb_clear_halt(serial->dev, port->write_urb->pipe);
973 usb_clear_halt(serial->dev, port->read_urb->pipe);
974
975 priv->poll = 0;
976
977 #define SOUP(a, b, c, d) do { \
978 result = usb_control_msg(port->serial->dev, \
979 usb_sndctrlpipe(port->serial->dev, 0), \
980 b, a, c, d, NULL, 0, 1000); \
981 dev_dbg(dev, "0x%x:0x%x:0x%x:0x%x %d\n", a, b, c, d, result); } while (0)
982
983 /* This is not UART related but IUU USB driver related or something */
984 /* like that. Basically no IUU will accept any commands from the USB */
985 /* host unless it has received the following message */
986 /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */
987
988 SOUP(0x03, 0x02, 0x02, 0x0);
989
990 iuu_led(port, 0xF000, 0xF000, 0, 0xFF);
991 iuu_uart_on(port);
992 if (boost < 100)
993 boost = 100;
994 priv->boost = boost;
995 priv->baud = baud;
996 switch (clockmode) {
997 case 2: /* 3.680 Mhz */
998 priv->clk = IUU_CLK_3680000;
999 iuu_clk(port, IUU_CLK_3680000 * boost / 100);
1000 result =
1001 iuu_uart_baud(port, baud * boost / 100, &actual,
1002 IUU_PARITY_EVEN);
1003 break;
1004 case 3: /* 6.00 Mhz */
1005 iuu_clk(port, IUU_CLK_6000000 * boost / 100);
1006 priv->clk = IUU_CLK_6000000;
1007 /* Ratio of 6000000 to 3500000 for baud 9600 */
1008 result =
1009 iuu_uart_baud(port, 16457 * boost / 100, &actual,
1010 IUU_PARITY_EVEN);
1011 break;
1012 default: /* 3.579 Mhz */
1013 iuu_clk(port, IUU_CLK_3579000 * boost / 100);
1014 priv->clk = IUU_CLK_3579000;
1015 result =
1016 iuu_uart_baud(port, baud * boost / 100, &actual,
1017 IUU_PARITY_EVEN);
1018 }
1019
1020 /* set the cardin cardout signals */
1021 switch (cdmode) {
1022 case 0:
1023 iuu_cardin = 0;
1024 iuu_cardout = 0;
1025 break;
1026 case 1:
1027 iuu_cardin = TIOCM_CD;
1028 iuu_cardout = 0;
1029 break;
1030 case 2:
1031 iuu_cardin = 0;
1032 iuu_cardout = TIOCM_CD;
1033 break;
1034 case 3:
1035 iuu_cardin = TIOCM_DSR;
1036 iuu_cardout = 0;
1037 break;
1038 case 4:
1039 iuu_cardin = 0;
1040 iuu_cardout = TIOCM_DSR;
1041 break;
1042 case 5:
1043 iuu_cardin = TIOCM_CTS;
1044 iuu_cardout = 0;
1045 break;
1046 case 6:
1047 iuu_cardin = 0;
1048 iuu_cardout = TIOCM_CTS;
1049 break;
1050 case 7:
1051 iuu_cardin = TIOCM_RNG;
1052 iuu_cardout = 0;
1053 break;
1054 case 8:
1055 iuu_cardin = 0;
1056 iuu_cardout = TIOCM_RNG;
1057 }
1058
1059 iuu_uart_flush(port);
1060
1061 dev_dbg(dev, "%s - initialization done\n", __func__);
1062
1063 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
1064 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1065 usb_sndbulkpipe(port->serial->dev,
1066 port->bulk_out_endpointAddress),
1067 port->write_urb->transfer_buffer, 1,
1068 read_rxcmd_callback, port);
1069 result = usb_submit_urb(port->write_urb, GFP_KERNEL);
1070 if (result) {
1071 dev_err(dev, "%s - failed submitting read urb, error %d\n", __func__, result);
1072 iuu_close(port);
1073 } else {
1074 dev_dbg(dev, "%s - rxcmd OK\n", __func__);
1075 }
1076
1077 return result;
1078 }
1079
1080 /* how to change VCC */
1081 static int iuu_vcc_set(struct usb_serial_port *port, unsigned int vcc)
1082 {
1083 int status;
1084 u8 *buf;
1085
1086 buf = kmalloc(5, GFP_KERNEL);
1087 if (!buf)
1088 return -ENOMEM;
1089
1090 buf[0] = IUU_SET_VCC;
1091 buf[1] = vcc & 0xFF;
1092 buf[2] = (vcc >> 8) & 0xFF;
1093 buf[3] = (vcc >> 16) & 0xFF;
1094 buf[4] = (vcc >> 24) & 0xFF;
1095
1096 status = bulk_immediate(port, buf, 5);
1097 kfree(buf);
1098
1099 if (status != IUU_OPERATION_OK)
1100 dev_dbg(&port->dev, "%s - vcc error status = %2x\n", __func__, status);
1101 else
1102 dev_dbg(&port->dev, "%s - vcc OK !\n", __func__);
1103
1104 return status;
1105 }
1106
1107 /*
1108 * Sysfs Attributes
1109 */
1110
1111 static ssize_t vcc_mode_show(struct device *dev,
1112 struct device_attribute *attr, char *buf)
1113 {
1114 struct usb_serial_port *port = to_usb_serial_port(dev);
1115 struct iuu_private *priv = usb_get_serial_port_data(port);
1116
1117 return sprintf(buf, "%d\n", priv->vcc);
1118 }
1119
1120 static ssize_t vcc_mode_store(struct device *dev,
1121 struct device_attribute *attr, const char *buf, size_t count)
1122 {
1123 struct usb_serial_port *port = to_usb_serial_port(dev);
1124 struct iuu_private *priv = usb_get_serial_port_data(port);
1125 unsigned long v;
1126
1127 if (kstrtoul(buf, 10, &v)) {
1128 dev_err(dev, "%s - vcc_mode: %s is not a unsigned long\n",
1129 __func__, buf);
1130 goto fail_store_vcc_mode;
1131 }
1132
1133 dev_dbg(dev, "%s: setting vcc_mode = %ld\n", __func__, v);
1134
1135 if ((v != 3) && (v != 5)) {
1136 dev_err(dev, "%s - vcc_mode %ld is invalid\n", __func__, v);
1137 } else {
1138 iuu_vcc_set(port, v);
1139 priv->vcc = v;
1140 }
1141 fail_store_vcc_mode:
1142 return count;
1143 }
1144 static DEVICE_ATTR_RW(vcc_mode);
1145
1146 static int iuu_create_sysfs_attrs(struct usb_serial_port *port)
1147 {
1148 return device_create_file(&port->dev, &dev_attr_vcc_mode);
1149 }
1150
1151 static int iuu_remove_sysfs_attrs(struct usb_serial_port *port)
1152 {
1153 device_remove_file(&port->dev, &dev_attr_vcc_mode);
1154 return 0;
1155 }
1156
1157 /*
1158 * End Sysfs Attributes
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 .num_bulk_in = 1,
1169 .num_bulk_out = 1,
1170 .bulk_in_size = 512,
1171 .bulk_out_size = 512,
1172 .open = iuu_open,
1173 .close = iuu_close,
1174 .write = iuu_uart_write,
1175 .read_bulk_callback = iuu_uart_read_callback,
1176 .tiocmget = iuu_tiocmget,
1177 .tiocmset = iuu_tiocmset,
1178 .set_termios = iuu_set_termios,
1179 .init_termios = iuu_init_termios,
1180 .port_probe = iuu_port_probe,
1181 .port_remove = iuu_port_remove,
1182 };
1183
1184 static struct usb_serial_driver * const serial_drivers[] = {
1185 &iuu_device, NULL
1186 };
1187
1188 module_usb_serial_driver(serial_drivers, id_table);
1189
1190 MODULE_AUTHOR("Alain Degreffe eczema@ecze.com");
1191
1192 MODULE_DESCRIPTION(DRIVER_DESC);
1193 MODULE_LICENSE("GPL");
1194
1195 module_param(xmas, bool, S_IRUGO | S_IWUSR);
1196 MODULE_PARM_DESC(xmas, "Xmas colors enabled or not");
1197
1198 module_param(boost, int, S_IRUGO | S_IWUSR);
1199 MODULE_PARM_DESC(boost, "Card overclock boost (in percent 100-500)");
1200
1201 module_param(clockmode, int, S_IRUGO | S_IWUSR);
1202 MODULE_PARM_DESC(clockmode, "Card clock mode (1=3.579 MHz, 2=3.680 MHz, "
1203 "3=6 Mhz)");
1204
1205 module_param(cdmode, int, S_IRUGO | S_IWUSR);
1206 MODULE_PARM_DESC(cdmode, "Card detect mode (0=none, 1=CD, 2=!CD, 3=DSR, "
1207 "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING)");
1208
1209 module_param(vcc_default, int, S_IRUGO | S_IWUSR);
1210 MODULE_PARM_DESC(vcc_default, "Set default VCC (either 3 for 3.3V or 5 "
1211 "for 5V). Default to 5.");
ubuntu-bionic-kernel mirror