1 // SPDX-License-Identifier: GPL-2.0+
3 * Infinity Unlimited USB Phoenix driver
5 * Copyright (C) 2010 James Courtier-Dutton (James@superbug.co.uk)
7 * Copyright (C) 2007 Alain Degreffe (eczema@ecze.com)
9 * Original code taken from iuutool (Copyright (C) 2006 Juan Carlos Borrás)
11 * And tested with help of WB Electronics
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>
29 #define DRIVER_DESC "Infinity USB Unlimited Phoenix driver"
31 static const struct usb_device_id id_table[] = {
32 {USB_DEVICE(IUU_USB_VENDOR_ID, IUU_USB_PRODUCT_ID)},
33 {} /* Terminating entry */
35 MODULE_DEVICE_TABLE(usb, id_table);
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;
44 static int vcc_default = 5;
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);
51 spinlock_t lock; /* store irq state */
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 */
60 int vcc; /* vcc (either 3 or 5 V) */
65 static int iuu_port_probe(struct usb_serial_port *port)
67 struct iuu_private *priv;
70 priv = kzalloc(sizeof(struct iuu_private), GFP_KERNEL);
74 priv->buf = kzalloc(256, GFP_KERNEL);
80 priv->writebuf = kzalloc(256, GFP_KERNEL);
81 if (!priv->writebuf) {
87 priv->vcc = vcc_default;
88 spin_lock_init(&priv->lock);
90 usb_set_serial_port_data(port, priv);
92 ret = iuu_create_sysfs_attrs(port);
94 kfree(priv->writebuf);
103 static int iuu_port_remove(struct usb_serial_port *port)
105 struct iuu_private *priv = usb_get_serial_port_data(port);
107 iuu_remove_sysfs_attrs(port);
108 kfree(priv->writebuf);
115 static int iuu_tiocmset(struct tty_struct *tty,
116 unsigned int set, unsigned int clear)
118 struct usb_serial_port *port = tty->driver_data;
119 struct iuu_private *priv = usb_get_serial_port_data(port);
122 /* FIXME: locking on tiomstatus */
123 dev_dbg(&port->dev, "%s msg : SET = 0x%04x, CLEAR = 0x%04x\n",
124 __func__, set, clear);
126 spin_lock_irqsave(&priv->lock, flags);
128 if ((set & TIOCM_RTS) && !(priv->tiostatus == TIOCM_RTS)) {
129 dev_dbg(&port->dev, "%s TIOCMSET RESET called !!!\n", __func__);
133 priv->tiostatus = TIOCM_RTS;
135 spin_unlock_irqrestore(&priv->lock, flags);
139 /* This is used to provide a carrier detect mechanism
140 * When a card is present, the response is 0x00
141 * When no card , the reader respond with TIOCM_CD
142 * This is known as CD autodetect mechanism
144 static int iuu_tiocmget(struct tty_struct *tty)
146 struct usb_serial_port *port = tty->driver_data;
147 struct iuu_private *priv = usb_get_serial_port_data(port);
151 spin_lock_irqsave(&priv->lock, flags);
152 rc = priv->tiostatus;
153 spin_unlock_irqrestore(&priv->lock, flags);
158 static void iuu_rxcmd(struct urb *urb)
160 struct usb_serial_port *port = urb->context;
162 int status = urb->status;
165 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
171 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
172 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
173 usb_sndbulkpipe(port->serial->dev,
174 port->bulk_out_endpointAddress),
175 port->write_urb->transfer_buffer, 1,
176 read_rxcmd_callback, port);
177 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
180 static int iuu_reset(struct usb_serial_port *port, u8 wt)
182 struct iuu_private *priv = usb_get_serial_port_data(port);
184 char *buf_ptr = port->write_urb->transfer_buffer;
186 /* Prepare the reset sequence */
188 *buf_ptr++ = IUU_RST_SET;
189 *buf_ptr++ = IUU_DELAY_MS;
191 *buf_ptr = IUU_RST_CLEAR;
193 /* send the sequence */
195 usb_fill_bulk_urb(port->write_urb,
197 usb_sndbulkpipe(port->serial->dev,
198 port->bulk_out_endpointAddress),
199 port->write_urb->transfer_buffer, 4, iuu_rxcmd, port);
200 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
211 static void iuu_update_status_callback(struct urb *urb)
213 struct usb_serial_port *port = urb->context;
214 struct iuu_private *priv = usb_get_serial_port_data(port);
216 int status = urb->status;
219 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
224 st = urb->transfer_buffer;
225 dev_dbg(&port->dev, "%s - enter\n", __func__);
226 if (urb->actual_length == 1) {
229 priv->tiostatus = iuu_cardout;
232 priv->tiostatus = iuu_cardin;
235 priv->tiostatus = iuu_cardin;
241 static void iuu_status_callback(struct urb *urb)
243 struct usb_serial_port *port = urb->context;
245 int status = urb->status;
247 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
248 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
249 usb_rcvbulkpipe(port->serial->dev,
250 port->bulk_in_endpointAddress),
251 port->read_urb->transfer_buffer, 256,
252 iuu_update_status_callback, port);
253 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
256 static int iuu_status(struct usb_serial_port *port)
260 memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1);
261 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
262 usb_sndbulkpipe(port->serial->dev,
263 port->bulk_out_endpointAddress),
264 port->write_urb->transfer_buffer, 1,
265 iuu_status_callback, port);
266 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
271 static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
274 struct usb_serial *serial = port->serial;
277 /* send the data out the bulk port */
280 usb_bulk_msg(serial->dev,
281 usb_sndbulkpipe(serial->dev,
282 port->bulk_out_endpointAddress), buf,
283 count, &actual, 1000);
285 if (status != IUU_OPERATION_OK)
286 dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status);
288 dev_dbg(&port->dev, "%s - write OK !\n", __func__);
292 static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
295 struct usb_serial *serial = port->serial;
298 /* send the data out the bulk port */
300 usb_bulk_msg(serial->dev,
301 usb_rcvbulkpipe(serial->dev,
302 port->bulk_in_endpointAddress), buf,
303 count, &actual, 1000);
305 if (status != IUU_OPERATION_OK)
306 dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status);
308 dev_dbg(&port->dev, "%s - read OK !\n", __func__);
312 static int iuu_led(struct usb_serial_port *port, unsigned int R,
313 unsigned int G, unsigned int B, u8 f)
317 buf = kmalloc(8, GFP_KERNEL);
321 buf[0] = IUU_SET_LED;
323 buf[2] = (R >> 8) & 0xFF;
325 buf[4] = (G >> 8) & 0xFF;
327 buf[6] = (B >> 8) & 0xFF;
329 status = bulk_immediate(port, buf, 8);
331 if (status != IUU_OPERATION_OK)
332 dev_dbg(&port->dev, "%s - led error status = %2x\n", __func__, status);
334 dev_dbg(&port->dev, "%s - led OK !\n", __func__);
335 return IUU_OPERATION_OK;
338 static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1,
341 *buf++ = IUU_SET_LED;
351 static void iuu_led_activity_on(struct urb *urb)
353 struct usb_serial_port *port = urb->context;
355 char *buf_ptr = port->write_urb->transfer_buffer;
358 buf_ptr[0] = IUU_SET_LED;
359 get_random_bytes(buf_ptr + 1, 6);
362 iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255);
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 ,
370 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
373 static void iuu_led_activity_off(struct urb *urb)
375 struct usb_serial_port *port = urb->context;
377 char *buf_ptr = port->write_urb->transfer_buffer;
384 iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255);
386 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
387 usb_sndbulkpipe(port->serial->dev,
388 port->bulk_out_endpointAddress),
389 port->write_urb->transfer_buffer, 8 ,
391 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
396 static int iuu_clk(struct usb_serial_port *port, int dwFrq)
399 struct iuu_private *priv = usb_get_serial_port_data(port);
402 u8 DIV = 0; /* 8bit */
403 u8 XDRV = 0; /* 8bit */
404 u8 PUMP = 0; /* 3bit */
405 u8 PBmsb = 0; /* 2bit */
406 u8 PBlsb = 0; /* 8bit */
407 u8 PO = 0; /* 1bit */
412 int frq = (int)dwFrq;
415 priv->buf[Count++] = IUU_UART_WRITE_I2C;
416 priv->buf[Count++] = FrqGenAdr << 1;
417 priv->buf[Count++] = 0x09;
418 priv->buf[Count++] = 0x00;
420 status = bulk_immediate(port, (u8 *) priv->buf, Count);
422 dev_dbg(&port->dev, "%s - write error\n", __func__);
425 } else if (frq == 3579000) {
430 } else if (frq == 3680000) {
435 } else if (frq == 6000000) {
441 unsigned int result = 0;
442 unsigned int tmp = 0;
447 unsigned int lP = 2055;
448 unsigned int lDiv = 4;
450 for (lQ = 2; lQ <= 47 && !found; lQ++)
451 for (lP = 2055; lP >= 8 && !found; lP--)
452 for (lDiv = 4; lDiv <= 127 && !found; lDiv++) {
453 tmp = (12000000 / lDiv) * (lP / lQ);
454 if (abs((int)(tmp - frq)) <
455 abs((int)(frq - result))) {
456 check2 = (12000000 / lQ);
459 check = (12000000 / lQ) * lP;
460 if (check > 400000000)
462 if (check < 100000000)
464 if (lDiv < 4 || lDiv > 127)
475 P2 = ((P - PO) / 2) - 4;
477 PBmsb = (P2 >> 8 & 0x03);
479 PO = (P >> 10) & 0x01;
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 */
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__);
534 static int iuu_uart_flush(struct usb_serial_port *port)
536 struct device *dev = &port->dev;
540 struct iuu_private *priv = usb_get_serial_port_data(port);
542 if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0)
545 rxcmd = kmalloc(1, GFP_KERNEL);
549 rxcmd[0] = IUU_UART_RX;
551 for (i = 0; i < 2; i++) {
552 status = bulk_immediate(port, rxcmd, 1);
553 if (status != IUU_OPERATION_OK) {
554 dev_dbg(dev, "%s - uart_flush_write error\n", __func__);
558 status = read_immediate(port, &priv->len, 1);
559 if (status != IUU_OPERATION_OK) {
560 dev_dbg(dev, "%s - uart_flush_read error\n", __func__);
565 dev_dbg(dev, "%s - uart_flush datalen is : %i\n", __func__, priv->len);
566 status = read_immediate(port, priv->buf, priv->len);
567 if (status != IUU_OPERATION_OK) {
568 dev_dbg(dev, "%s - uart_flush_read error\n", __func__);
573 dev_dbg(dev, "%s - uart_flush_read OK!\n", __func__);
574 iuu_led(port, 0, 0xF000, 0, 0xFF);
582 static void read_buf_callback(struct urb *urb)
584 struct usb_serial_port *port = urb->context;
585 unsigned char *data = urb->transfer_buffer;
586 int status = urb->status;
589 if (status == -EPROTO) {
590 /* reschedule needed */
595 dev_dbg(&port->dev, "%s - %i chars to write\n", __func__, urb->actual_length);
597 if (urb->actual_length) {
598 tty_insert_flip_string(&port->port, data, urb->actual_length);
599 tty_flip_buffer_push(&port->port);
601 iuu_led_activity_on(urb);
604 static int iuu_bulk_write(struct usb_serial_port *port)
606 struct iuu_private *priv = usb_get_serial_port_data(port);
610 char *buf_ptr = port->write_urb->transfer_buffer;
612 spin_lock_irqsave(&priv->lock, flags);
613 *buf_ptr++ = IUU_UART_ESC;
614 *buf_ptr++ = IUU_UART_TX;
615 *buf_ptr++ = priv->writelen;
617 memcpy(buf_ptr, priv->writebuf, priv->writelen);
618 buf_len = priv->writelen;
620 spin_unlock_irqrestore(&priv->lock, flags);
621 dev_dbg(&port->dev, "%s - writing %i chars : %*ph\n", __func__,
622 buf_len, buf_len, buf_ptr);
623 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
624 usb_sndbulkpipe(port->serial->dev,
625 port->bulk_out_endpointAddress),
626 port->write_urb->transfer_buffer, buf_len + 3,
628 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
629 usb_serial_port_softint(port);
633 static int iuu_read_buf(struct usb_serial_port *port, int len)
637 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
638 usb_rcvbulkpipe(port->serial->dev,
639 port->bulk_in_endpointAddress),
640 port->read_urb->transfer_buffer, len,
641 read_buf_callback, port);
642 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
646 static void iuu_uart_read_callback(struct urb *urb)
648 struct usb_serial_port *port = urb->context;
649 struct iuu_private *priv = usb_get_serial_port_data(port);
651 int status = urb->status;
654 unsigned char *data = urb->transfer_buffer;
658 dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
663 if (urb->actual_length == 1)
666 if (urb->actual_length > 1) {
667 dev_dbg(&port->dev, "%s - urb->actual_length = %i\n", __func__,
672 /* if len > 0 call readbuf */
674 if (len > 0 && error == 0) {
675 dev_dbg(&port->dev, "%s - call read buf - len to read is %i\n",
677 status = iuu_read_buf(port, len);
680 /* need to update status ? */
681 if (priv->poll > 99) {
682 status = iuu_status(port);
687 /* reset waiting ? */
689 if (priv->reset == 1) {
690 status = iuu_reset(port, 0xC);
693 /* Writebuf is waiting */
694 spin_lock_irqsave(&priv->lock, flags);
695 if (priv->writelen > 0) {
696 spin_unlock_irqrestore(&priv->lock, flags);
697 status = iuu_bulk_write(port);
700 spin_unlock_irqrestore(&priv->lock, flags);
701 /* if nothing to write call again rxcmd */
702 dev_dbg(&port->dev, "%s - rxcmd recall\n", __func__);
703 iuu_led_activity_off(urb);
706 static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port,
707 const u8 *buf, int count)
709 struct iuu_private *priv = usb_get_serial_port_data(port);
712 spin_lock_irqsave(&priv->lock, flags);
714 count = min(count, 256 - priv->writelen);
718 /* fill the buffer */
719 memcpy(priv->writebuf + priv->writelen, buf, count);
720 priv->writelen += count;
722 spin_unlock_irqrestore(&priv->lock, flags);
727 static void read_rxcmd_callback(struct urb *urb)
729 struct usb_serial_port *port = urb->context;
731 int status = urb->status;
738 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
739 usb_rcvbulkpipe(port->serial->dev,
740 port->bulk_in_endpointAddress),
741 port->read_urb->transfer_buffer, 256,
742 iuu_uart_read_callback, port);
743 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
744 dev_dbg(&port->dev, "%s - submit result = %d\n", __func__, result);
747 static int iuu_uart_on(struct usb_serial_port *port)
752 buf = kmalloc(4, GFP_KERNEL);
757 buf[0] = IUU_UART_ENABLE;
758 buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF);
759 buf[2] = (u8) (0x00FF & IUU_BAUD_9600);
760 buf[3] = (u8) (0x0F0 & IUU_ONE_STOP_BIT) | (0x07 & IUU_PARITY_EVEN);
762 status = bulk_immediate(port, buf, 4);
763 if (status != IUU_OPERATION_OK) {
764 dev_dbg(&port->dev, "%s - uart_on error\n", __func__);
765 goto uart_enable_failed;
767 /* iuu_reset() the card after iuu_uart_on() */
768 status = iuu_uart_flush(port);
769 if (status != IUU_OPERATION_OK)
770 dev_dbg(&port->dev, "%s - uart_flush error\n", __func__);
776 /* Disables the IUU UART (a.k.a. the Phoenix voiderface) */
777 static int iuu_uart_off(struct usb_serial_port *port)
781 buf = kmalloc(1, GFP_KERNEL);
784 buf[0] = IUU_UART_DISABLE;
786 status = bulk_immediate(port, buf, 1);
787 if (status != IUU_OPERATION_OK)
788 dev_dbg(&port->dev, "%s - uart_off error\n", __func__);
794 static int iuu_uart_baud(struct usb_serial_port *port, u32 baud_base,
795 u32 *actual, u8 parity)
803 unsigned int T1FrekvensHZ = 0;
805 dev_dbg(&port->dev, "%s - enter baud_base=%d\n", __func__, baud_base);
806 dataout = kmalloc(5, GFP_KERNEL);
810 /*baud = (((priv->clk / 35) * baud_base) / 100000); */
813 if (baud < 1200 || baud > 230400) {
815 return IUU_INVALID_PARAMETER;
819 T1FrekvensHZ = 500000;
824 T1FrekvensHZ = 2000000;
829 T1FrekvensHZ = 6000000;
834 T1FrekvensHZ = 24000000;
837 T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2));
839 /* magic number here: ENTER_FIRMWARE_UPDATE; */
840 dataout[DataCount++] = IUU_UART_ESC;
841 /* magic number here: CHANGE_BAUD; */
842 dataout[DataCount++] = IUU_UART_CHANGE;
843 dataout[DataCount++] = T1Frekvens;
844 dataout[DataCount++] = T1reload;
846 *actual = (T1FrekvensHZ / (256 - T1reload)) / 2;
848 switch (parity & 0x0F) {
849 case IUU_PARITY_NONE:
850 dataout[DataCount++] = 0x00;
852 case IUU_PARITY_EVEN:
853 dataout[DataCount++] = 0x01;
856 dataout[DataCount++] = 0x02;
858 case IUU_PARITY_MARK:
859 dataout[DataCount++] = 0x03;
861 case IUU_PARITY_SPACE:
862 dataout[DataCount++] = 0x04;
866 return IUU_INVALID_PARAMETER;
870 switch (parity & 0xF0) {
871 case IUU_ONE_STOP_BIT:
872 dataout[DataCount - 1] |= IUU_ONE_STOP_BIT;
875 case IUU_TWO_STOP_BITS:
876 dataout[DataCount - 1] |= IUU_TWO_STOP_BITS;
880 return IUU_INVALID_PARAMETER;
884 status = bulk_immediate(port, dataout, DataCount);
885 if (status != IUU_OPERATION_OK)
886 dev_dbg(&port->dev, "%s - uart_off error\n", __func__);
891 static void iuu_set_termios(struct tty_struct *tty,
892 struct usb_serial_port *port, struct ktermios *old_termios)
894 const u32 supported_mask = CMSPAR|PARENB|PARODD;
895 struct iuu_private *priv = usb_get_serial_port_data(port);
896 unsigned int cflag = tty->termios.c_cflag;
902 u32 newval = cflag & supported_mask;
904 /* Just use the ospeed. ispeed should be the same. */
905 baud = tty->termios.c_ospeed;
907 dev_dbg(&port->dev, "%s - enter c_ospeed or baud=%d\n", __func__, baud);
909 /* compute the parity parameter */
911 if (cflag & CMSPAR) { /* Using mark space */
913 parity |= IUU_PARITY_SPACE;
915 parity |= IUU_PARITY_MARK;
916 } else if (!(cflag & PARENB)) {
917 parity |= IUU_PARITY_NONE;
919 } else if (cflag & PARODD)
920 parity |= IUU_PARITY_ODD;
922 parity |= IUU_PARITY_EVEN;
924 parity |= (cflag & CSTOPB ? IUU_TWO_STOP_BITS : IUU_ONE_STOP_BIT);
927 status = iuu_uart_baud(port,
928 baud * priv->boost / 100,
931 /* set the termios value to the real one, so the user now what has
932 * changed. We support few fields so its easies to copy the old hw
933 * settings back over and then adjust them
936 tty_termios_copy_hw(&tty->termios, old_termios);
937 if (status != 0) /* Set failed - return old bits */
939 /* Re-encode speed, parity and csize */
940 tty_encode_baud_rate(tty, baud, baud);
941 tty->termios.c_cflag &= ~(supported_mask|CSIZE);
942 tty->termios.c_cflag |= newval | csize;
945 static void iuu_close(struct usb_serial_port *port)
947 /* iuu_led (port,255,0,0,0); */
951 usb_kill_urb(port->write_urb);
952 usb_kill_urb(port->read_urb);
954 iuu_led(port, 0, 0, 0xF000, 0xFF);
957 static void iuu_init_termios(struct tty_struct *tty)
959 tty->termios = tty_std_termios;
960 tty->termios.c_cflag = CLOCAL | CREAD | CS8 | B9600
961 | TIOCM_CTS | CSTOPB | PARENB;
962 tty->termios.c_ispeed = 9600;
963 tty->termios.c_ospeed = 9600;
964 tty->termios.c_lflag = 0;
965 tty->termios.c_oflag = 0;
966 tty->termios.c_iflag = 0;
969 static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port)
971 struct usb_serial *serial = port->serial;
972 struct device *dev = &port->dev;
976 struct iuu_private *priv = usb_get_serial_port_data(port);
978 baud = tty->termios.c_ospeed;
980 dev_dbg(dev, "%s - baud %d\n", __func__, baud);
981 usb_clear_halt(serial->dev, port->write_urb->pipe);
982 usb_clear_halt(serial->dev, port->read_urb->pipe);
986 #define SOUP(a, b, c, d) do { \
987 result = usb_control_msg(port->serial->dev, \
988 usb_sndctrlpipe(port->serial->dev, 0), \
989 b, a, c, d, NULL, 0, 1000); \
990 dev_dbg(dev, "0x%x:0x%x:0x%x:0x%x %d\n", a, b, c, d, result); } while (0)
992 /* This is not UART related but IUU USB driver related or something */
993 /* like that. Basically no IUU will accept any commands from the USB */
994 /* host unless it has received the following message */
995 /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */
997 SOUP(0x03, 0x02, 0x02, 0x0);
999 iuu_led(port, 0xF000, 0xF000, 0, 0xFF);
1003 priv->boost = boost;
1004 switch (clockmode) {
1005 case 2: /* 3.680 Mhz */
1006 priv->clk = IUU_CLK_3680000;
1007 iuu_clk(port, IUU_CLK_3680000 * boost / 100);
1009 iuu_uart_baud(port, baud * boost / 100, &actual,
1012 case 3: /* 6.00 Mhz */
1013 iuu_clk(port, IUU_CLK_6000000 * boost / 100);
1014 priv->clk = IUU_CLK_6000000;
1015 /* Ratio of 6000000 to 3500000 for baud 9600 */
1017 iuu_uart_baud(port, 16457 * boost / 100, &actual,
1020 default: /* 3.579 Mhz */
1021 iuu_clk(port, IUU_CLK_3579000 * boost / 100);
1022 priv->clk = IUU_CLK_3579000;
1024 iuu_uart_baud(port, baud * boost / 100, &actual,
1028 /* set the cardin cardout signals */
1035 iuu_cardin = TIOCM_CD;
1040 iuu_cardout = TIOCM_CD;
1043 iuu_cardin = TIOCM_DSR;
1048 iuu_cardout = TIOCM_DSR;
1051 iuu_cardin = TIOCM_CTS;
1056 iuu_cardout = TIOCM_CTS;
1059 iuu_cardin = TIOCM_RNG;
1064 iuu_cardout = TIOCM_RNG;
1067 iuu_uart_flush(port);
1069 dev_dbg(dev, "%s - initialization done\n", __func__);
1071 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
1072 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1073 usb_sndbulkpipe(port->serial->dev,
1074 port->bulk_out_endpointAddress),
1075 port->write_urb->transfer_buffer, 1,
1076 read_rxcmd_callback, port);
1077 result = usb_submit_urb(port->write_urb, GFP_KERNEL);
1079 dev_err(dev, "%s - failed submitting read urb, error %d\n", __func__, result);
1082 dev_dbg(dev, "%s - rxcmd OK\n", __func__);
1088 /* how to change VCC */
1089 static int iuu_vcc_set(struct usb_serial_port *port, unsigned int vcc)
1094 buf = kmalloc(5, GFP_KERNEL);
1098 buf[0] = IUU_SET_VCC;
1099 buf[1] = vcc & 0xFF;
1100 buf[2] = (vcc >> 8) & 0xFF;
1101 buf[3] = (vcc >> 16) & 0xFF;
1102 buf[4] = (vcc >> 24) & 0xFF;
1104 status = bulk_immediate(port, buf, 5);
1107 if (status != IUU_OPERATION_OK)
1108 dev_dbg(&port->dev, "%s - vcc error status = %2x\n", __func__, status);
1110 dev_dbg(&port->dev, "%s - vcc OK !\n", __func__);
1119 static ssize_t vcc_mode_show(struct device *dev,
1120 struct device_attribute *attr, char *buf)
1122 struct usb_serial_port *port = to_usb_serial_port(dev);
1123 struct iuu_private *priv = usb_get_serial_port_data(port);
1125 return sprintf(buf, "%d\n", priv->vcc);
1128 static ssize_t vcc_mode_store(struct device *dev,
1129 struct device_attribute *attr, const char *buf, size_t count)
1131 struct usb_serial_port *port = to_usb_serial_port(dev);
1132 struct iuu_private *priv = usb_get_serial_port_data(port);
1135 if (kstrtoul(buf, 10, &v)) {
1136 dev_err(dev, "%s - vcc_mode: %s is not a unsigned long\n",
1138 goto fail_store_vcc_mode;
1141 dev_dbg(dev, "%s: setting vcc_mode = %ld\n", __func__, v);
1143 if ((v != 3) && (v != 5)) {
1144 dev_err(dev, "%s - vcc_mode %ld is invalid\n", __func__, v);
1146 iuu_vcc_set(port, v);
1149 fail_store_vcc_mode:
1152 static DEVICE_ATTR_RW(vcc_mode);
1154 static int iuu_create_sysfs_attrs(struct usb_serial_port *port)
1156 return device_create_file(&port->dev, &dev_attr_vcc_mode);
1159 static int iuu_remove_sysfs_attrs(struct usb_serial_port *port)
1161 device_remove_file(&port->dev, &dev_attr_vcc_mode);
1166 * End Sysfs Attributes
1169 static struct usb_serial_driver iuu_device = {
1171 .owner = THIS_MODULE,
1172 .name = "iuu_phoenix",
1174 .id_table = id_table,
1178 .bulk_in_size = 512,
1179 .bulk_out_size = 512,
1182 .write = iuu_uart_write,
1183 .read_bulk_callback = iuu_uart_read_callback,
1184 .tiocmget = iuu_tiocmget,
1185 .tiocmset = iuu_tiocmset,
1186 .set_termios = iuu_set_termios,
1187 .init_termios = iuu_init_termios,
1188 .port_probe = iuu_port_probe,
1189 .port_remove = iuu_port_remove,
1192 static struct usb_serial_driver * const serial_drivers[] = {
1196 module_usb_serial_driver(serial_drivers, id_table);
1198 MODULE_AUTHOR("Alain Degreffe eczema@ecze.com");
1200 MODULE_DESCRIPTION(DRIVER_DESC);
1201 MODULE_LICENSE("GPL");
1203 module_param(xmas, bool, S_IRUGO | S_IWUSR);
1204 MODULE_PARM_DESC(xmas, "Xmas colors enabled or not");
1206 module_param(boost, int, S_IRUGO | S_IWUSR);
1207 MODULE_PARM_DESC(boost, "Card overclock boost (in percent 100-500)");
1209 module_param(clockmode, int, S_IRUGO | S_IWUSR);
1210 MODULE_PARM_DESC(clockmode, "Card clock mode (1=3.579 MHz, 2=3.680 MHz, "
1213 module_param(cdmode, int, S_IRUGO | S_IWUSR);
1214 MODULE_PARM_DESC(cdmode, "Card detect mode (0=none, 1=CD, 2=!CD, 3=DSR, "
1215 "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING)");
1217 module_param(vcc_default, int, S_IRUGO | S_IWUSR);
1218 MODULE_PARM_DESC(vcc_default, "Set default VCC (either 3 for 3.3V or 5 "
1219 "for 5V). Default to 5.");