2 * LIRC driver for ITE IT8712/IT8705 CIR port
4 * Copyright (C) 2001 Hans-Gunter Lutke Uphues <hg_lu@web.de>
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation; either version 2 of the
9 * License, or (at your option) any later version.
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
21 * ITE IT8705 and IT8712(not tested) and IT8720 CIR-port support for lirc based
22 * via cut and paste from lirc_sir.c (C) 2000 Milan Pikula
24 * Attention: Sendmode only tested with debugging logs
26 * 2001/02/27 Christoph Bartelmus <lirc@bartelmus.de> :
27 * reimplemented read function
28 * 2005/06/05 Andrew Calkin implemented support for Asus Digimatrix,
29 * based on work of the following member of the Outertrack Digimatrix
30 * Forum: Art103 <r_tay@hotmail.com>
31 * 2009/12/24 James Edwards <jimbo-lirc@edwardsclan.net> implemeted support
32 * for ITE8704/ITE8718, on my machine, the DSDT reports 8704, but the
33 * chip identifies as 18.
36 #include <linux/module.h>
37 #include <linux/sched.h>
38 #include <linux/errno.h>
39 #include <linux/signal.h>
41 #include <linux/interrupt.h>
42 #include <linux/ioport.h>
43 #include <linux/kernel.h>
44 #include <linux/time.h>
45 #include <linux/string.h>
46 #include <linux/types.h>
47 #include <linux/wait.h>
49 #include <linux/delay.h>
50 #include <linux/poll.h>
51 #include <asm/system.h>
53 #include <linux/irq.h>
54 #include <linux/fcntl.h>
56 #include <linux/timer.h>
57 #include <linux/pnp.h>
59 #include <media/lirc.h>
60 #include <media/lirc_dev.h>
62 #include "lirc_it87.h"
64 #ifdef LIRC_IT87_DIGIMATRIX
65 static int digimatrix = 1;
66 static int it87_freq = 36; /* kHz */
69 static int digimatrix;
70 static int it87_freq = 38; /* kHz */
71 static int irq = IT87_CIR_DEFAULT_IRQ;
74 static unsigned long it87_bits_in_byte_out;
75 static unsigned long it87_send_counter;
76 static unsigned char it87_RXEN_mask = IT87_CIR_RCR_RXEN;
80 #define LIRC_DRIVER_NAME "lirc_it87"
82 /* timeout for sequences in jiffies (=5/100s) */
83 /* must be longer than TIME_CONST */
84 #define IT87_TIMEOUT (HZ*5/100)
86 /* module parameters */
88 #define dprintk(fmt, args...) \
91 printk(KERN_DEBUG LIRC_DRIVER_NAME ": " \
95 static int io = IT87_CIR_DEFAULT_IOBASE;
96 /* receiver demodulator default: off */
97 static int it87_enable_demodulator;
99 static int timer_enabled;
100 static DEFINE_SPINLOCK(timer_lock);
101 static struct timer_list timerlist;
102 /* time of last signal change detected */
103 static struct timeval last_tv = {0, 0};
104 /* time of last UART data ready interrupt */
105 static struct timeval last_intr_tv = {0, 0};
106 static int last_value;
108 static DECLARE_WAIT_QUEUE_HEAD(lirc_read_queue);
110 static DEFINE_SPINLOCK(hardware_lock);
111 static DEFINE_SPINLOCK(dev_lock);
113 static int rx_buf[RBUF_LEN];
114 unsigned int rx_tail, rx_head;
116 static struct pnp_driver it87_pnp_driver;
118 /* SECTION: Prototypes */
120 /* Communication with user-space */
121 static int lirc_open(struct inode *inode, struct file *file);
122 static int lirc_close(struct inode *inode, struct file *file);
123 static unsigned int lirc_poll(struct file *file, poll_table *wait);
124 static ssize_t lirc_read(struct file *file, char *buf,
125 size_t count, loff_t *ppos);
126 static ssize_t lirc_write(struct file *file, const char *buf,
127 size_t n, loff_t *pos);
128 static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
129 static void add_read_queue(int flag, unsigned long val);
130 static int init_chrdev(void);
131 static void drop_chrdev(void);
133 static irqreturn_t it87_interrupt(int irq, void *dev_id);
134 static void send_space(unsigned long len);
135 static void send_pulse(unsigned long len);
136 static void init_send(void);
137 static void terminate_send(unsigned long len);
138 static int init_hardware(void);
139 static void drop_hardware(void);
141 static int init_port(void);
142 static void drop_port(void);
145 /* SECTION: Communication with user-space */
147 static int lirc_open(struct inode *inode, struct file *file)
149 spin_lock(&dev_lock);
150 if (module_refcount(THIS_MODULE)) {
151 spin_unlock(&dev_lock);
154 spin_unlock(&dev_lock);
159 static int lirc_close(struct inode *inode, struct file *file)
165 static unsigned int lirc_poll(struct file *file, poll_table *wait)
167 poll_wait(file, &lirc_read_queue, wait);
168 if (rx_head != rx_tail)
169 return POLLIN | POLLRDNORM;
174 static ssize_t lirc_read(struct file *file, char *buf,
175 size_t count, loff_t *ppos)
181 if (file->f_flags & O_NONBLOCK && rx_head == rx_tail) {
185 retval = wait_event_interruptible(lirc_read_queue,
190 if (copy_to_user((void *) buf + n, (void *) (rx_buf + rx_head),
195 rx_head = (rx_head + 1) & (RBUF_LEN - 1);
204 static ssize_t lirc_write(struct file *file, const char *buf,
205 size_t n, loff_t *pos)
212 tx_buf = memdup_user(buf, n);
214 return PTR_ERR(tx_buf);
221 send_pulse(tx_buf[i]);
226 send_space(tx_buf[i]);
229 terminate_send(tx_buf[i - 1]);
234 static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
237 unsigned long value = 0;
239 unsigned long hw_flags;
241 if (cmd == LIRC_GET_FEATURES)
242 value = LIRC_CAN_SEND_PULSE |
243 LIRC_CAN_SET_SEND_CARRIER |
245 else if (cmd == LIRC_GET_SEND_MODE)
246 value = LIRC_MODE_PULSE;
247 else if (cmd == LIRC_GET_REC_MODE)
248 value = LIRC_MODE_MODE2;
251 case LIRC_GET_FEATURES:
252 case LIRC_GET_SEND_MODE:
253 case LIRC_GET_REC_MODE:
254 retval = put_user(value, (unsigned long *) arg);
257 case LIRC_SET_SEND_MODE:
258 case LIRC_SET_REC_MODE:
259 retval = get_user(value, (unsigned long *) arg);
262 case LIRC_SET_SEND_CARRIER:
263 retval = get_user(ivalue, (unsigned int *) arg);
267 if (ivalue > IT87_CIR_FREQ_MAX ||
268 ivalue < IT87_CIR_FREQ_MIN)
273 spin_lock_irqsave(&hardware_lock, hw_flags);
274 outb(((inb(io + IT87_CIR_TCR2) & IT87_CIR_TCR2_TXMPW) |
275 (it87_freq - IT87_CIR_FREQ_MIN) << 3),
277 spin_unlock_irqrestore(&hardware_lock, hw_flags);
278 dprintk("demodulation frequency: %d kHz\n", it87_freq);
289 if (cmd == LIRC_SET_REC_MODE) {
290 if (value != LIRC_MODE_MODE2)
292 } else if (cmd == LIRC_SET_SEND_MODE) {
293 if (value != LIRC_MODE_PULSE)
299 static void add_read_queue(int flag, unsigned long val)
301 unsigned int new_rx_tail;
304 dprintk("add flag %d with val %lu\n", flag, val);
306 newval = val & PULSE_MASK;
309 * statistically, pulses are ~TIME_CONST/2 too long. we could
310 * maybe make this more exact, but this is good enough
314 if (newval > TIME_CONST / 2)
315 newval -= TIME_CONST / 2;
316 else /* should not ever happen */
320 newval += TIME_CONST / 2;
321 new_rx_tail = (rx_tail + 1) & (RBUF_LEN - 1);
322 if (new_rx_tail == rx_head) {
323 dprintk("Buffer overrun.\n");
326 rx_buf[rx_tail] = newval;
327 rx_tail = new_rx_tail;
328 wake_up_interruptible(&lirc_read_queue);
332 static struct file_operations lirc_fops = {
333 .owner = THIS_MODULE,
337 .unlocked_ioctl = lirc_ioctl,
339 .release = lirc_close,
342 static int set_use_inc(void *data)
347 static void set_use_dec(void *data)
351 static struct lirc_driver driver = {
352 .name = LIRC_DRIVER_NAME,
358 .set_use_inc = set_use_inc,
359 .set_use_dec = set_use_dec,
362 .owner = THIS_MODULE,
367 static int init_chrdev(void)
369 driver.minor = lirc_register_driver(&driver);
371 if (driver.minor < 0) {
372 printk(KERN_ERR LIRC_DRIVER_NAME ": init_chrdev() failed.\n");
379 static void drop_chrdev(void)
381 lirc_unregister_driver(driver.minor);
386 /* SECTION: Hardware */
387 static long delta(struct timeval *tv1, struct timeval *tv2)
391 deltv = tv2->tv_sec - tv1->tv_sec;
395 deltv = deltv*1000000 + tv2->tv_usec - tv1->tv_usec;
399 static void it87_timeout(unsigned long data)
403 /* avoid interference with interrupt */
404 spin_lock_irqsave(&timer_lock, flags);
407 /* We have timed out. Disable the RX mechanism. */
409 outb((inb(io + IT87_CIR_RCR) & ~IT87_CIR_RCR_RXEN) |
410 IT87_CIR_RCR_RXACT, io + IT87_CIR_RCR);
412 outb(inb(io + IT87_CIR_RCR) | IT87_CIR_RCR_RXEN,
414 dprintk(" TIMEOUT\n");
418 outb(inb(io + IT87_CIR_TCR1) | IT87_CIR_TCR1_FIFOCLR,
423 * if last received signal was a pulse, but receiving stopped
424 * within the 9 bit frame, we need to finish this pulse and
425 * simulate a signal change to from pulse to space. Otherwise
426 * upper layers will receive two sequences next time.
430 unsigned long pulse_end;
432 /* determine 'virtual' pulse end: */
433 pulse_end = delta(&last_tv, &last_intr_tv);
434 dprintk("timeout add %d for %lu usec\n",
435 last_value, pulse_end);
436 add_read_queue(last_value, pulse_end);
438 last_tv = last_intr_tv;
441 spin_unlock_irqrestore(&timer_lock, flags);
444 static irqreturn_t it87_interrupt(int irq, void *dev_id)
447 struct timeval curr_tv;
448 static unsigned long deltv;
449 unsigned long deltintrtv;
450 unsigned long flags, hw_flags;
456 /* Bit duration in microseconds */
457 const unsigned long bit_duration = 1000000ul /
458 (115200 / IT87_CIR_BAUDRATE_DIVISOR);
461 iir = inb(io + IT87_CIR_IIR);
463 switch (iir & IT87_CIR_IIR_IID) {
466 lsr = inb(io + IT87_CIR_RSR) & (IT87_CIR_RSR_RXFTO |
468 fifo = lsr & IT87_CIR_RSR_RXFBC;
469 dprintk("iir: 0x%x fifo: 0x%x\n", iir, lsr);
471 /* avoid interference with timer */
472 spin_lock_irqsave(&timer_lock, flags);
473 spin_lock_irqsave(&hardware_lock, hw_flags);
475 static unsigned long acc_pulse;
476 static unsigned long acc_space;
479 data = inb(io + IT87_CIR_DR);
484 del_timer(&timerlist);
486 * start timer for end of
489 timerlist.expires = jiffies +
491 add_timer(&timerlist);
495 for (bit = 0; bit < 8; ++bit) {
496 if ((data >> bit) & 1) {
513 lastbit = (data >> bit) & 1;
517 } else { /* Normal Operation */
519 del_timer(&timerlist);
520 data = inb(io + IT87_CIR_DR);
522 dprintk("data=%02x\n", data);
523 do_gettimeofday(&curr_tv);
524 deltv = delta(&last_tv, &curr_tv);
525 deltintrtv = delta(&last_intr_tv, &curr_tv);
527 dprintk("t %lu , d %d\n",
528 deltintrtv, (int)data);
531 * if nothing came in last 2 cycles,
534 if (deltintrtv > TIME_CONST * 2) {
538 /* simulate signal change */
539 add_read_queue(last_value,
546 last_intr_tv.tv_usec;
551 if (data ^ last_value) {
553 * deltintrtv > 2*TIME_CONST,
554 * remember ? the other case is
557 add_read_queue(last_value,
561 if (last_tv.tv_usec >= TIME_CONST)
562 last_tv.tv_usec -= TIME_CONST;
565 last_tv.tv_usec += 1000000 -
569 last_intr_tv = curr_tv;
572 * start timer for end of
576 jiffies + IT87_TIMEOUT;
577 add_timer(&timerlist);
579 outb((inb(io + IT87_CIR_RCR) &
580 ~IT87_CIR_RCR_RXEN) |
584 outb(inb(io + IT87_CIR_RCR) |
590 spin_unlock_irqrestore(&hardware_lock, hw_flags);
591 spin_unlock_irqrestore(&timer_lock, flags);
593 return IRQ_RETVAL(IRQ_HANDLED);
597 dprintk("unknown IRQ (shouldn't happen) !!\n");
598 return IRQ_RETVAL(IRQ_NONE);
603 static void send_it87(unsigned long len, unsigned long stime,
604 unsigned char send_byte, unsigned int count_bits)
606 long count = len / stime;
608 static unsigned char byte_out;
609 unsigned long hw_flags;
611 dprintk("%s: len=%ld, sb=%d\n", __func__, len, send_byte);
613 time_left = (long)len - (long)count * (long)stime;
614 count += ((2 * time_left) / stime);
617 for (i = 0; i < count_bits; i++) {
618 byte_out = (byte_out << 1) | (send_byte & 1);
619 it87_bits_in_byte_out++;
621 if (it87_bits_in_byte_out == 8) {
622 dprintk("out=0x%x, tsr_txfbc: 0x%x\n",
624 inb(io + IT87_CIR_TSR) &
627 while ((inb(io + IT87_CIR_TSR) &
628 IT87_CIR_TSR_TXFBC) >= IT87_CIR_FIFO_SIZE)
631 spin_lock_irqsave(&hardware_lock, hw_flags);
632 outb(byte_out, io + IT87_CIR_DR);
633 spin_unlock_irqrestore(&hardware_lock, hw_flags);
635 it87_bits_in_byte_out = 0;
644 /*TODO: maybe exchange space and pulse because it8705 only modulates 0-bits */
646 static void send_space(unsigned long len)
648 send_it87(len, TIME_CONST, IT87_CIR_SPACE, IT87_CIR_BAUDRATE_DIVISOR);
651 static void send_pulse(unsigned long len)
653 send_it87(len, TIME_CONST, IT87_CIR_PULSE, IT87_CIR_BAUDRATE_DIVISOR);
657 static void init_send()
661 spin_lock_irqsave(&hardware_lock, flags);
662 /* RXEN=0: receiver disable */
664 outb(inb(io + IT87_CIR_RCR) & ~IT87_CIR_RCR_RXEN,
666 spin_unlock_irqrestore(&hardware_lock, flags);
667 it87_bits_in_byte_out = 0;
668 it87_send_counter = 0;
672 static void terminate_send(unsigned long len)
675 unsigned long last = 0;
677 last = it87_send_counter;
678 /* make sure all necessary data has been sent */
679 while (last == it87_send_counter)
681 /* wait until all data sent */
682 while ((inb(io + IT87_CIR_TSR) & IT87_CIR_TSR_TXFBC) != 0)
684 /* then re-enable receiver */
685 spin_lock_irqsave(&hardware_lock, flags);
686 it87_RXEN_mask = IT87_CIR_RCR_RXEN;
687 outb(inb(io + IT87_CIR_RCR) | IT87_CIR_RCR_RXEN,
689 spin_unlock_irqrestore(&hardware_lock, flags);
693 static int init_hardware(void)
696 unsigned char it87_rcr = 0;
698 spin_lock_irqsave(&hardware_lock, flags);
700 /* enable r/w-access to Baudrate-Register */
701 outb(IT87_CIR_IER_BR, io + IT87_CIR_IER);
702 outb(IT87_CIR_BAUDRATE_DIVISOR % 0x100, io+IT87_CIR_BDLR);
703 outb(IT87_CIR_BAUDRATE_DIVISOR / 0x100, io+IT87_CIR_BDHR);
704 /* Baudrate Register off, define IRQs: Input only */
706 outb(IT87_CIR_IER_IEC | IT87_CIR_IER_RFOIE, io + IT87_CIR_IER);
707 /* RX: HCFS=0, RXDCR = 001b (33,75..38,25 kHz), RXEN=1 */
709 outb(IT87_CIR_IER_IEC | IT87_CIR_IER_RDAIE, io + IT87_CIR_IER);
710 /* RX: HCFS=0, RXDCR = 001b (35,6..40,3 kHz), RXEN=1 */
712 it87_rcr = (IT87_CIR_RCR_RXEN & it87_RXEN_mask) | 0x1;
713 if (it87_enable_demodulator)
714 it87_rcr |= IT87_CIR_RCR_RXEND;
715 outb(it87_rcr, io + IT87_CIR_RCR);
717 /* Set FIFO depth to 1 byte, and disable TX */
718 outb(inb(io + IT87_CIR_TCR1) | 0x00,
722 * TX: it87_freq (36kHz), 'reserved' sensitivity
725 outb(((it87_freq - IT87_CIR_FREQ_MIN) << 3) | 0x00,
728 /* TX: 38kHz, 13,3us (pulse-width) */
729 outb(((it87_freq - IT87_CIR_FREQ_MIN) << 3) | 0x06,
732 spin_unlock_irqrestore(&hardware_lock, flags);
737 static void drop_hardware(void)
741 spin_lock_irqsave(&hardware_lock, flags);
743 /* receiver disable */
745 outb(0x1, io + IT87_CIR_RCR);
747 outb(0, io + IT87_CIR_IER);
749 outb(IT87_CIR_TCR1_FIFOCLR, io+IT87_CIR_TCR1);
751 outb(IT87_CIR_IER_RESET, io+IT87_CIR_IER);
753 spin_unlock_irqrestore(&hardware_lock, flags);
757 static unsigned char it87_read(unsigned char port)
759 outb(port, IT87_ADRPORT);
760 return inb(IT87_DATAPORT);
764 static void it87_write(unsigned char port, unsigned char data)
766 outb(port, IT87_ADRPORT);
767 outb(data, IT87_DATAPORT);
771 /* SECTION: Initialisation */
773 static int init_port(void)
775 unsigned long hw_flags;
778 unsigned char init_bytes[4] = IT87_INIT;
779 unsigned char it87_chipid = 0;
780 unsigned char ldn = 0;
781 unsigned int it87_io = 0;
782 unsigned int it87_irq = 0;
784 /* Enter MB PnP Mode */
785 outb(init_bytes[0], IT87_ADRPORT);
786 outb(init_bytes[1], IT87_ADRPORT);
787 outb(init_bytes[2], IT87_ADRPORT);
788 outb(init_bytes[3], IT87_ADRPORT);
791 it87_chipid = it87_read(IT87_CHIP_ID1);
792 if (it87_chipid != 0x87) {
796 it87_chipid = it87_read(IT87_CHIP_ID2);
797 if ((it87_chipid != 0x05) &&
798 (it87_chipid != 0x12) &&
799 (it87_chipid != 0x18) &&
800 (it87_chipid != 0x20)) {
801 printk(KERN_INFO LIRC_DRIVER_NAME
802 ": no IT8704/05/12/18/20 found (claimed IT87%02x), "
803 "exiting..\n", it87_chipid);
807 printk(KERN_INFO LIRC_DRIVER_NAME
808 ": found IT87%02x.\n",
811 /* get I/O-Port and IRQ */
812 if (it87_chipid == 0x12 || it87_chipid == 0x18)
813 ldn = IT8712_CIR_LDN;
815 ldn = IT8705_CIR_LDN;
816 it87_write(IT87_LDN, ldn);
818 it87_io = it87_read(IT87_CIR_BASE_MSB) * 256 +
819 it87_read(IT87_CIR_BASE_LSB);
822 io = IT87_CIR_DEFAULT_IOBASE;
823 printk(KERN_INFO LIRC_DRIVER_NAME
824 ": set default io 0x%x\n",
826 it87_write(IT87_CIR_BASE_MSB, io / 0x100);
827 it87_write(IT87_CIR_BASE_LSB, io % 0x100);
831 it87_irq = it87_read(IT87_CIR_IRQ);
832 if (digimatrix || it87_irq == 0) {
834 irq = IT87_CIR_DEFAULT_IRQ;
835 printk(KERN_INFO LIRC_DRIVER_NAME
836 ": set default irq 0x%x\n",
838 it87_write(IT87_CIR_IRQ, irq);
842 spin_lock_irqsave(&hardware_lock, hw_flags);
844 outb(IT87_CIR_IER_RESET, io+IT87_CIR_IER);
846 outb(IT87_CIR_TCR1_FIFOCLR |
847 /* IT87_CIR_TCR1_ILE | */
848 IT87_CIR_TCR1_TXRLE |
849 IT87_CIR_TCR1_TXENDF, io+IT87_CIR_TCR1);
850 spin_unlock_irqrestore(&hardware_lock, hw_flags);
852 /* get I/O port access and IRQ line */
853 if (request_region(io, 8, LIRC_DRIVER_NAME) == NULL) {
854 printk(KERN_ERR LIRC_DRIVER_NAME
855 ": i/o port 0x%.4x already in use.\n", io);
856 /* Leaving MB PnP Mode */
857 it87_write(IT87_CFGCTRL, 0x2);
861 /* activate CIR-Device */
862 it87_write(IT87_CIR_ACT, 0x1);
864 /* Leaving MB PnP Mode */
865 it87_write(IT87_CFGCTRL, 0x2);
867 retval = request_irq(irq, it87_interrupt, 0 /*IRQF_DISABLED*/,
868 LIRC_DRIVER_NAME, NULL);
870 printk(KERN_ERR LIRC_DRIVER_NAME
871 ": IRQ %d already in use.\n",
873 release_region(io, 8);
877 printk(KERN_INFO LIRC_DRIVER_NAME
878 ": I/O port 0x%.4x, IRQ %d.\n", io, irq);
880 init_timer(&timerlist);
881 timerlist.function = it87_timeout;
882 timerlist.data = 0xabadcafe;
888 static void drop_port(void)
891 unsigned char init_bytes[4] = IT87_INIT;
893 /* Enter MB PnP Mode */
894 outb(init_bytes[0], IT87_ADRPORT);
895 outb(init_bytes[1], IT87_ADRPORT);
896 outb(init_bytes[2], IT87_ADRPORT);
897 outb(init_bytes[3], IT87_ADRPORT);
899 /* deactivate CIR-Device */
900 it87_write(IT87_CIR_ACT, 0x0);
902 /* Leaving MB PnP Mode */
903 it87_write(IT87_CFGCTRL, 0x2);
906 del_timer_sync(&timerlist);
908 release_region(io, 8);
912 static int init_lirc_it87(void)
916 init_waitqueue_head(&lirc_read_queue);
917 retval = init_port();
921 printk(KERN_INFO LIRC_DRIVER_NAME ": Installed.\n");
925 static int it87_probe(struct pnp_dev *pnp_dev,
926 const struct pnp_device_id *dev_id)
930 driver.dev = &pnp_dev->dev;
932 retval = init_chrdev();
936 retval = init_lirc_it87();
938 goto init_lirc_it87_failed;
942 init_lirc_it87_failed:
948 static int __init lirc_it87_init(void)
950 return pnp_register_driver(&it87_pnp_driver);
954 static void __exit lirc_it87_exit(void)
959 pnp_unregister_driver(&it87_pnp_driver);
960 printk(KERN_INFO LIRC_DRIVER_NAME ": Uninstalled.\n");
963 /* SECTION: PNP for ITE8704/18 */
965 static const struct pnp_device_id pnp_dev_table[] = {
970 MODULE_DEVICE_TABLE(pnp, pnp_dev_table);
972 static struct pnp_driver it87_pnp_driver = {
973 .name = LIRC_DRIVER_NAME,
974 .id_table = pnp_dev_table,
978 module_init(lirc_it87_init);
979 module_exit(lirc_it87_exit);
981 MODULE_DESCRIPTION("LIRC driver for ITE IT8704/05/12/18/20 CIR port");
982 MODULE_AUTHOR("Hans-Gunter Lutke Uphues");
983 MODULE_LICENSE("GPL");
985 module_param(io, int, S_IRUGO);
986 MODULE_PARM_DESC(io, "I/O base address (default: 0x310)");
988 module_param(irq, int, S_IRUGO);
989 #ifdef LIRC_IT87_DIGIMATRIX
990 MODULE_PARM_DESC(irq, "Interrupt (1,3-12) (default: 9)");
992 MODULE_PARM_DESC(irq, "Interrupt (1,3-12) (default: 7)");
995 module_param(it87_enable_demodulator, bool, S_IRUGO);
996 MODULE_PARM_DESC(it87_enable_demodulator,
997 "Receiver demodulator enable/disable (1/0), default: 0");
999 module_param(debug, bool, S_IRUGO | S_IWUSR);
1000 MODULE_PARM_DESC(debug, "Enable debugging messages");
1002 module_param(digimatrix, bool, S_IRUGO | S_IWUSR);
1003 #ifdef LIRC_IT87_DIGIMATRIX
1004 MODULE_PARM_DESC(digimatrix,
1005 "Asus Digimatrix it87 compat. enable/disable (1/0), default: 1");
1007 MODULE_PARM_DESC(digimatrix,
1008 "Asus Digimatrix it87 compat. enable/disable (1/0), default: 0");
1012 module_param(it87_freq, int, S_IRUGO);
1013 #ifdef LIRC_IT87_DIGIMATRIX
1014 MODULE_PARM_DESC(it87_freq,
1015 "Carrier demodulator frequency (kHz), (default: 36)");
1017 MODULE_PARM_DESC(it87_freq,
1018 "Carrier demodulator frequency (kHz), (default: 38)");