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 const 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)");