2 * LIRC SIR driver, (C) 2000 Milan Pikula <www@fornax.sk>
4 * lirc_sir - Device driver for use with SIR (serial infra red)
5 * mode of IrDA on many notebooks.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 * 2000/09/16 Frank Przybylski <mail@frankprzybylski.de> :
23 * added timeout and relaxed pulse detection, removed gap bug
25 * 2000/12/15 Christoph Bartelmus <lirc@bartelmus.de> :
26 * added support for Tekram Irmate 210 (sending does not work yet,
27 * kind of disappointing that nobody was able to implement that
31 * 2001/02/27 Christoph Bartelmus <lirc@bartelmus.de> :
32 * added support for StrongARM SA1100 embedded microprocessor
33 * parts cut'n'pasted from sa1100_ir.c (C) 2000 Russell King
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/serial_reg.h>
45 #include <linux/time.h>
46 #include <linux/string.h>
47 #include <linux/types.h>
48 #include <linux/wait.h>
50 #include <linux/delay.h>
51 #include <linux/poll.h>
52 #include <asm/system.h>
55 #include <linux/fcntl.h>
57 #include <asm/hardware.h>
58 #ifdef CONFIG_SA1100_COLLIE
59 #include <asm/arch/tc35143.h>
60 #include <asm/ucb1200.h>
64 #include <linux/timer.h>
66 #include <media/lirc.h>
67 #include <media/lirc_dev.h>
69 /* SECTION: Definitions */
71 /*** Tekram dongle ***/
72 #ifdef LIRC_SIR_TEKRAM
73 /* stolen from kernel source */
74 /* definitions for Tekram dongle */
75 #define TEKRAM_115200 0x00
76 #define TEKRAM_57600 0x01
77 #define TEKRAM_38400 0x02
78 #define TEKRAM_19200 0x03
79 #define TEKRAM_9600 0x04
80 #define TEKRAM_2400 0x08
82 #define TEKRAM_PW 0x10 /* Pulse select bit */
84 /* 10bit * 1s/115200bit in milliseconds = 87ms*/
85 #define TIME_CONST (10000000ul/115200ul)
89 #ifdef LIRC_SIR_ACTISYS_ACT200L
90 static void init_act200(void);
91 #elif defined(LIRC_SIR_ACTISYS_ACT220L)
92 static void init_act220(void);
97 struct sa1100_ser2_registers {
98 /* HSSP control register */
111 static int irq = IRQ_Ser2ICP;
113 #define LIRC_ON_SA1100_TRANSMITTER_LATENCY 0
115 /* pulse/space ratio of 50/50 */
116 static unsigned long pulse_width = (13-LIRC_ON_SA1100_TRANSMITTER_LATENCY);
117 /* 1000000/freq-pulse_width */
118 static unsigned long space_width = (13-LIRC_ON_SA1100_TRANSMITTER_LATENCY);
119 static unsigned int freq = 38000; /* modulation frequency */
120 static unsigned int duty_cycle = 50; /* duty cycle of 50% */
124 #define RBUF_LEN 1024
125 #define WBUF_LEN 1024
127 #define LIRC_DRIVER_NAME "lirc_sir"
131 #ifndef LIRC_SIR_TEKRAM
132 /* 9bit * 1s/115200bit in milli seconds = 78.125ms*/
133 #define TIME_CONST (9000000ul/115200ul)
137 /* timeout for sequences in jiffies (=5/100s), must be longer than TIME_CONST */
138 #define SIR_TIMEOUT (HZ*5/100)
140 #ifndef LIRC_ON_SA1100
145 /* for external dongles, default to com1 */
146 #if defined(LIRC_SIR_ACTISYS_ACT200L) || \
147 defined(LIRC_SIR_ACTISYS_ACT220L) || \
148 defined(LIRC_SIR_TEKRAM)
149 #define LIRC_PORT 0x3f8
151 /* onboard sir ports are typically com3 */
152 #define LIRC_PORT 0x3e8
156 static int io = LIRC_PORT;
157 static int irq = LIRC_IRQ;
158 static int threshold = 3;
161 static DEFINE_SPINLOCK(timer_lock);
162 static struct timer_list timerlist;
163 /* time of last signal change detected */
164 static struct timeval last_tv = {0, 0};
165 /* time of last UART data ready interrupt */
166 static struct timeval last_intr_tv = {0, 0};
167 static int last_value;
169 static DECLARE_WAIT_QUEUE_HEAD(lirc_read_queue);
171 static DEFINE_SPINLOCK(hardware_lock);
173 static int rx_buf[RBUF_LEN];
174 static unsigned int rx_tail, rx_head;
177 #define dprintk(fmt, args...) \
180 printk(KERN_DEBUG LIRC_DRIVER_NAME ": " \
184 /* SECTION: Prototypes */
186 /* Communication with user-space */
187 static unsigned int lirc_poll(struct file *file, poll_table *wait);
188 static ssize_t lirc_read(struct file *file, char *buf, size_t count,
190 static ssize_t lirc_write(struct file *file, const char *buf, size_t n,
192 static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
193 static void add_read_queue(int flag, unsigned long val);
194 static int init_chrdev(void);
195 static void drop_chrdev(void);
197 static irqreturn_t sir_interrupt(int irq, void *dev_id);
198 static void send_space(unsigned long len);
199 static void send_pulse(unsigned long len);
200 static int init_hardware(void);
201 static void drop_hardware(void);
203 static int init_port(void);
204 static void drop_port(void);
206 #ifdef LIRC_ON_SA1100
212 static void off(void)
217 static inline unsigned int sinp(int offset)
219 return inb(io + offset);
222 static inline void soutp(int offset, int value)
224 outb(value, io + offset);
228 #ifndef MAX_UDELAY_MS
229 #define MAX_UDELAY_US 5000
231 #define MAX_UDELAY_US (MAX_UDELAY_MS*1000)
234 static void safe_udelay(unsigned long usecs)
236 while (usecs > MAX_UDELAY_US) {
237 udelay(MAX_UDELAY_US);
238 usecs -= MAX_UDELAY_US;
243 /* SECTION: Communication with user-space */
245 static unsigned int lirc_poll(struct file *file, poll_table *wait)
247 poll_wait(file, &lirc_read_queue, wait);
248 if (rx_head != rx_tail)
249 return POLLIN | POLLRDNORM;
253 static ssize_t lirc_read(struct file *file, char *buf, size_t count,
258 DECLARE_WAITQUEUE(wait, current);
260 if (count % sizeof(int))
263 add_wait_queue(&lirc_read_queue, &wait);
264 set_current_state(TASK_INTERRUPTIBLE);
266 if (rx_head != rx_tail) {
267 if (copy_to_user((void *) buf + n,
268 (void *) (rx_buf + rx_head),
273 rx_head = (rx_head + 1) & (RBUF_LEN - 1);
276 if (file->f_flags & O_NONBLOCK) {
280 if (signal_pending(current)) {
281 retval = -ERESTARTSYS;
285 set_current_state(TASK_INTERRUPTIBLE);
288 remove_wait_queue(&lirc_read_queue, &wait);
289 set_current_state(TASK_RUNNING);
290 return n ? n : retval;
292 static ssize_t lirc_write(struct file *file, const char *buf, size_t n,
299 count = n / sizeof(int);
300 if (n % sizeof(int) || count % 2 == 0)
302 tx_buf = memdup_user(buf, n);
304 return PTR_ERR(tx_buf);
306 #ifdef LIRC_ON_SA1100
307 /* disable receiver */
310 local_irq_save(flags);
315 send_pulse(tx_buf[i]);
320 send_space(tx_buf[i]);
323 local_irq_restore(flags);
324 #ifdef LIRC_ON_SA1100
326 udelay(1000); /* wait 1ms for IR diode to recover */
328 /* clear status register to prevent unwanted interrupts */
329 Ser2UTSR0 &= (UTSR0_RID | UTSR0_RBB | UTSR0_REB);
330 /* enable receiver */
331 Ser2UTCR3 = UTCR3_RXE|UTCR3_RIE;
336 static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
339 unsigned long value = 0;
340 #ifdef LIRC_ON_SA1100
343 if (cmd == LIRC_GET_FEATURES)
344 value = LIRC_CAN_SEND_PULSE |
345 LIRC_CAN_SET_SEND_DUTY_CYCLE |
346 LIRC_CAN_SET_SEND_CARRIER |
348 else if (cmd == LIRC_GET_SEND_MODE)
349 value = LIRC_MODE_PULSE;
350 else if (cmd == LIRC_GET_REC_MODE)
351 value = LIRC_MODE_MODE2;
353 if (cmd == LIRC_GET_FEATURES)
354 value = LIRC_CAN_SEND_PULSE | LIRC_CAN_REC_MODE2;
355 else if (cmd == LIRC_GET_SEND_MODE)
356 value = LIRC_MODE_PULSE;
357 else if (cmd == LIRC_GET_REC_MODE)
358 value = LIRC_MODE_MODE2;
362 case LIRC_GET_FEATURES:
363 case LIRC_GET_SEND_MODE:
364 case LIRC_GET_REC_MODE:
365 retval = put_user(value, (unsigned long *) arg);
368 case LIRC_SET_SEND_MODE:
369 case LIRC_SET_REC_MODE:
370 retval = get_user(value, (unsigned long *) arg);
372 #ifdef LIRC_ON_SA1100
373 case LIRC_SET_SEND_DUTY_CYCLE:
374 retval = get_user(ivalue, (unsigned int *) arg);
377 if (ivalue <= 0 || ivalue > 100)
379 /* (ivalue/100)*(1000000/freq) */
381 pulse_width = (unsigned long) duty_cycle*10000/freq;
382 space_width = (unsigned long) 1000000L/freq-pulse_width;
383 if (pulse_width >= LIRC_ON_SA1100_TRANSMITTER_LATENCY)
384 pulse_width -= LIRC_ON_SA1100_TRANSMITTER_LATENCY;
385 if (space_width >= LIRC_ON_SA1100_TRANSMITTER_LATENCY)
386 space_width -= LIRC_ON_SA1100_TRANSMITTER_LATENCY;
388 case LIRC_SET_SEND_CARRIER:
389 retval = get_user(ivalue, (unsigned int *) arg);
392 if (ivalue > 500000 || ivalue < 20000)
395 pulse_width = (unsigned long) duty_cycle*10000/freq;
396 space_width = (unsigned long) 1000000L/freq-pulse_width;
397 if (pulse_width >= LIRC_ON_SA1100_TRANSMITTER_LATENCY)
398 pulse_width -= LIRC_ON_SA1100_TRANSMITTER_LATENCY;
399 if (space_width >= LIRC_ON_SA1100_TRANSMITTER_LATENCY)
400 space_width -= LIRC_ON_SA1100_TRANSMITTER_LATENCY;
404 retval = -ENOIOCTLCMD;
410 if (cmd == LIRC_SET_REC_MODE) {
411 if (value != LIRC_MODE_MODE2)
413 } else if (cmd == LIRC_SET_SEND_MODE) {
414 if (value != LIRC_MODE_PULSE)
421 static void add_read_queue(int flag, unsigned long val)
423 unsigned int new_rx_tail;
426 dprintk("add flag %d with val %lu\n", flag, val);
428 newval = val & PULSE_MASK;
431 * statistically, pulses are ~TIME_CONST/2 too long. we could
432 * maybe make this more exact, but this is good enough
436 if (newval > TIME_CONST/2)
437 newval -= TIME_CONST/2;
438 else /* should not ever happen */
442 newval += TIME_CONST/2;
444 new_rx_tail = (rx_tail + 1) & (RBUF_LEN - 1);
445 if (new_rx_tail == rx_head) {
446 dprintk("Buffer overrun.\n");
449 rx_buf[rx_tail] = newval;
450 rx_tail = new_rx_tail;
451 wake_up_interruptible(&lirc_read_queue);
454 static const struct file_operations lirc_fops = {
455 .owner = THIS_MODULE,
459 .unlocked_ioctl = lirc_ioctl,
460 .open = lirc_dev_fop_open,
461 .release = lirc_dev_fop_close,
465 static int set_use_inc(void *data)
470 static void set_use_dec(void *data)
474 static struct lirc_driver driver = {
475 .name = LIRC_DRIVER_NAME,
481 .set_use_inc = set_use_inc,
482 .set_use_dec = set_use_dec,
485 .owner = THIS_MODULE,
489 static int init_chrdev(void)
491 driver.minor = lirc_register_driver(&driver);
492 if (driver.minor < 0) {
493 printk(KERN_ERR LIRC_DRIVER_NAME ": init_chrdev() failed.\n");
499 static void drop_chrdev(void)
501 lirc_unregister_driver(driver.minor);
504 /* SECTION: Hardware */
505 static long delta(struct timeval *tv1, struct timeval *tv2)
509 deltv = tv2->tv_sec - tv1->tv_sec;
513 deltv = deltv*1000000 +
519 static void sir_timeout(unsigned long data)
522 * if last received signal was a pulse, but receiving stopped
523 * within the 9 bit frame, we need to finish this pulse and
524 * simulate a signal change to from pulse to space. Otherwise
525 * upper layers will receive two sequences next time.
529 unsigned long pulse_end;
531 /* avoid interference with interrupt */
532 spin_lock_irqsave(&timer_lock, flags);
534 #ifndef LIRC_ON_SA1100
535 /* clear unread bits in UART and restart */
536 outb(UART_FCR_CLEAR_RCVR, io + UART_FCR);
538 /* determine 'virtual' pulse end: */
539 pulse_end = delta(&last_tv, &last_intr_tv);
540 dprintk("timeout add %d for %lu usec\n", last_value, pulse_end);
541 add_read_queue(last_value, pulse_end);
543 last_tv = last_intr_tv;
545 spin_unlock_irqrestore(&timer_lock, flags);
548 static irqreturn_t sir_interrupt(int irq, void *dev_id)
551 struct timeval curr_tv;
552 static unsigned long deltv;
553 #ifdef LIRC_ON_SA1100
559 * Deal with any receive errors first. The bytes in error may be
560 * the only bytes in the receive FIFO, so we do this first.
562 while (status & UTSR0_EIF) {
569 if (bstat & UTSR1_FRE)
570 dprintk("frame error\n");
571 if (bstat & UTSR1_ROR)
572 dprintk("receive fifo overrun\n");
573 if (bstat & UTSR1_PRE)
574 dprintk("parity error\n");
582 if (status & (UTSR0_RFS | UTSR0_RID)) {
583 do_gettimeofday(&curr_tv);
584 deltv = delta(&last_tv, &curr_tv);
587 dprintk("%d data: %u\n", n, (unsigned int) data);
589 } while (status & UTSR0_RID && /* do not empty fifo in order to
590 * get UTSR0_RID in any case */
591 Ser2UTSR1 & UTSR1_RNE); /* data ready */
593 if (status&UTSR0_RID) {
594 add_read_queue(0 , deltv - n * TIME_CONST); /*space*/
595 add_read_queue(1, n * TIME_CONST); /*pulse*/
601 if (status & UTSR0_TFS)
602 printk(KERN_ERR "transmit fifo not full, shouldn't happen\n");
604 /* We must clear certain bits. */
605 status &= (UTSR0_RID | UTSR0_RBB | UTSR0_REB);
609 unsigned long deltintrtv;
613 while ((iir = inb(io + UART_IIR) & UART_IIR_ID)) {
614 switch (iir&UART_IIR_ID) { /* FIXME toto treba preriedit */
616 (void) inb(io + UART_MSR);
619 (void) inb(io + UART_LSR);
623 if (lsr & UART_LSR_THRE) /* FIFO is empty */
624 outb(data, io + UART_TX)
628 /* avoid interference with timer */
629 spin_lock_irqsave(&timer_lock, flags);
631 del_timer(&timerlist);
632 data = inb(io + UART_RX);
633 do_gettimeofday(&curr_tv);
634 deltv = delta(&last_tv, &curr_tv);
635 deltintrtv = delta(&last_intr_tv, &curr_tv);
636 dprintk("t %lu, d %d\n", deltintrtv, (int)data);
638 * if nothing came in last X cycles,
641 if (deltintrtv > TIME_CONST * threshold) {
644 /* simulate signal change */
645 add_read_queue(last_value,
652 last_intr_tv.tv_usec;
657 if (data ^ last_value) {
659 * deltintrtv > 2*TIME_CONST, remember?
660 * the other case is timeout
662 add_read_queue(last_value,
666 if (last_tv.tv_usec >= TIME_CONST) {
667 last_tv.tv_usec -= TIME_CONST;
670 last_tv.tv_usec += 1000000 -
674 last_intr_tv = curr_tv;
677 * start timer for end of
680 timerlist.expires = jiffies +
682 add_timer(&timerlist);
685 lsr = inb(io + UART_LSR);
686 } while (lsr & UART_LSR_DR); /* data ready */
687 spin_unlock_irqrestore(&timer_lock, flags);
694 return IRQ_RETVAL(IRQ_HANDLED);
697 #ifdef LIRC_ON_SA1100
698 static void send_pulse(unsigned long length)
700 unsigned long k, delay;
706 * this won't give us the carrier frequency we really want
707 * due to integer arithmetic, but we can accept this inaccuracy
710 for (k = flag = 0; k < length; k += delay, flag = !flag) {
723 static void send_space(unsigned long length)
731 static void send_space(unsigned long len)
736 static void send_pulse(unsigned long len)
738 long bytes_out = len / TIME_CONST;
741 time_left = (long)len - (long)bytes_out * (long)TIME_CONST;
742 if (bytes_out == 0) {
746 while (bytes_out--) {
747 outb(PULSE, io + UART_TX);
748 /* FIXME treba seriozne cakanie z char/serial.c */
749 while (!(inb(io + UART_LSR) & UART_LSR_THRE))
754 safe_udelay(time_left);
759 #ifdef CONFIG_SA1100_COLLIE
760 static int sa1100_irda_set_power_collie(int state)
765 * 1 - short range, lowest power
766 * 2 - medium range, medium power
767 * 3 - maximum range, high power
769 ucb1200_set_io_direction(TC35143_GPIO_IR_ON,
770 TC35143_IODIR_OUTPUT);
771 ucb1200_set_io(TC35143_GPIO_IR_ON, TC35143_IODAT_LOW);
775 ucb1200_set_io_direction(TC35143_GPIO_IR_ON,
776 TC35143_IODIR_OUTPUT);
777 ucb1200_set_io(TC35143_GPIO_IR_ON, TC35143_IODAT_HIGH);
783 static int init_hardware(void)
787 spin_lock_irqsave(&hardware_lock, flags);
789 #ifdef LIRC_ON_SA1100
790 #ifdef CONFIG_SA1100_BITSY
791 if (machine_is_bitsy()) {
792 printk(KERN_INFO "Power on IR module\n");
793 set_bitsy_egpio(EGPIO_BITSY_IR_ON);
796 #ifdef CONFIG_SA1100_COLLIE
797 sa1100_irda_set_power_collie(3); /* power on */
799 sr.hscr0 = Ser2HSCR0;
801 sr.utcr0 = Ser2UTCR0;
802 sr.utcr1 = Ser2UTCR1;
803 sr.utcr2 = Ser2UTCR2;
804 sr.utcr3 = Ser2UTCR3;
805 sr.utcr4 = Ser2UTCR4;
808 sr.utsr0 = Ser2UTSR0;
809 sr.utsr1 = Ser2UTSR1;
815 /* set output to 0 */
818 /* Enable HP-SIR modulation, and ensure that the port is disabled. */
820 Ser2HSCR0 = sr.hscr0 & (~HSCR0_HSSP);
822 /* clear status register to prevent unwanted interrupts */
823 Ser2UTSR0 &= (UTSR0_RID | UTSR0_RBB | UTSR0_REB);
826 Ser2UTCR0 = UTCR0_1StpBit|UTCR0_7BitData;
830 /* use HPSIR, 1.6 usec pulses */
831 Ser2UTCR4 = UTCR4_HPSIR|UTCR4_Z1_6us;
833 /* enable receiver, receive fifo interrupt */
834 Ser2UTCR3 = UTCR3_RXE|UTCR3_RIE;
836 /* clear status register to prevent unwanted interrupts */
837 Ser2UTSR0 &= (UTSR0_RID | UTSR0_RBB | UTSR0_REB);
839 #elif defined(LIRC_SIR_TEKRAM)
847 soutp(UART_LCR, sinp(UART_LCR) & (~UART_LCR_DLAB));
849 /* First of all, disable all interrupts */
850 soutp(UART_IER, sinp(UART_IER) &
851 (~(UART_IER_MSI|UART_IER_RLSI|UART_IER_THRI|UART_IER_RDI)));
854 soutp(UART_LCR, sinp(UART_LCR) | UART_LCR_DLAB);
856 /* Set divisor to 12 => 9600 Baud */
861 soutp(UART_LCR, sinp(UART_LCR) & (~UART_LCR_DLAB));
864 soutp(UART_MCR, UART_MCR_RTS|UART_MCR_DTR|UART_MCR_OUT2);
865 safe_udelay(50*1000);
867 /* -DTR low -> reset PIC */
868 soutp(UART_MCR, UART_MCR_RTS|UART_MCR_OUT2);
871 soutp(UART_MCR, UART_MCR_RTS|UART_MCR_DTR|UART_MCR_OUT2);
875 /* -RTS low -> send control byte */
876 soutp(UART_MCR, UART_MCR_DTR|UART_MCR_OUT2);
878 soutp(UART_TX, TEKRAM_115200|TEKRAM_PW);
880 /* one byte takes ~1042 usec to transmit at 9600,8N1 */
883 /* back to normal operation */
884 soutp(UART_MCR, UART_MCR_RTS|UART_MCR_DTR|UART_MCR_OUT2);
889 /* read previous control byte */
890 printk(KERN_INFO LIRC_DRIVER_NAME
891 ": 0x%02x\n", sinp(UART_RX));
894 soutp(UART_LCR, sinp(UART_LCR) | UART_LCR_DLAB);
896 /* Set divisor to 1 => 115200 Baud */
900 /* Set DLAB 0, 8 Bit */
901 soutp(UART_LCR, UART_LCR_WLEN8);
902 /* enable interrupts */
903 soutp(UART_IER, sinp(UART_IER)|UART_IER_RDI);
905 outb(0, io + UART_MCR);
906 outb(0, io + UART_IER);
908 /* set DLAB, speed = 115200 */
909 outb(UART_LCR_DLAB | UART_LCR_WLEN7, io + UART_LCR);
910 outb(1, io + UART_DLL); outb(0, io + UART_DLM);
911 /* 7N1+start = 9 bits at 115200 ~ 3 bits at 44000 */
912 outb(UART_LCR_WLEN7, io + UART_LCR);
914 outb(UART_FCR_ENABLE_FIFO, io + UART_FCR);
916 /* outb(UART_IER_RLSI|UART_IER_RDI|UART_IER_THRI, io + UART_IER); */
917 outb(UART_IER_RDI, io + UART_IER);
919 outb(UART_MCR_DTR|UART_MCR_RTS|UART_MCR_OUT2, io + UART_MCR);
920 #ifdef LIRC_SIR_ACTISYS_ACT200L
922 #elif defined(LIRC_SIR_ACTISYS_ACT220L)
926 spin_unlock_irqrestore(&hardware_lock, flags);
930 static void drop_hardware(void)
934 spin_lock_irqsave(&hardware_lock, flags);
936 #ifdef LIRC_ON_SA1100
939 Ser2UTCR0 = sr.utcr0;
940 Ser2UTCR1 = sr.utcr1;
941 Ser2UTCR2 = sr.utcr2;
942 Ser2UTCR4 = sr.utcr4;
943 Ser2UTCR3 = sr.utcr3;
945 Ser2HSCR0 = sr.hscr0;
946 #ifdef CONFIG_SA1100_BITSY
947 if (machine_is_bitsy())
948 clr_bitsy_egpio(EGPIO_BITSY_IR_ON);
950 #ifdef CONFIG_SA1100_COLLIE
951 sa1100_irda_set_power_collie(0); /* power off */
954 /* turn off interrupts */
955 outb(0, io + UART_IER);
957 spin_unlock_irqrestore(&hardware_lock, flags);
960 /* SECTION: Initialisation */
962 static int init_port(void)
966 /* get I/O port access and IRQ line */
967 #ifndef LIRC_ON_SA1100
968 if (request_region(io, 8, LIRC_DRIVER_NAME) == NULL) {
969 printk(KERN_ERR LIRC_DRIVER_NAME
970 ": i/o port 0x%.4x already in use.\n", io);
974 retval = request_irq(irq, sir_interrupt, IRQF_DISABLED,
975 LIRC_DRIVER_NAME, NULL);
977 # ifndef LIRC_ON_SA1100
978 release_region(io, 8);
980 printk(KERN_ERR LIRC_DRIVER_NAME
981 ": IRQ %d already in use.\n",
985 #ifndef LIRC_ON_SA1100
986 printk(KERN_INFO LIRC_DRIVER_NAME
987 ": I/O port 0x%.4x, IRQ %d.\n",
991 init_timer(&timerlist);
992 timerlist.function = sir_timeout;
993 timerlist.data = 0xabadcafe;
998 static void drop_port(void)
1000 free_irq(irq, NULL);
1001 del_timer_sync(&timerlist);
1002 #ifndef LIRC_ON_SA1100
1003 release_region(io, 8);
1007 #ifdef LIRC_SIR_ACTISYS_ACT200L
1008 /* Crystal/Cirrus CS8130 IR transceiver, used in Actisys Act200L dongle */
1009 /* some code borrowed from Linux IRDA driver */
1011 /* Register 0: Control register #1 */
1012 #define ACT200L_REG0 0x00
1013 #define ACT200L_TXEN 0x01 /* Enable transmitter */
1014 #define ACT200L_RXEN 0x02 /* Enable receiver */
1015 #define ACT200L_ECHO 0x08 /* Echo control chars */
1017 /* Register 1: Control register #2 */
1018 #define ACT200L_REG1 0x10
1019 #define ACT200L_LODB 0x01 /* Load new baud rate count value */
1020 #define ACT200L_WIDE 0x04 /* Expand the maximum allowable pulse */
1022 /* Register 3: Transmit mode register #2 */
1023 #define ACT200L_REG3 0x30
1024 #define ACT200L_B0 0x01 /* DataBits, 0=6, 1=7, 2=8, 3=9(8P) */
1025 #define ACT200L_B1 0x02 /* DataBits, 0=6, 1=7, 2=8, 3=9(8P) */
1026 #define ACT200L_CHSY 0x04 /* StartBit Synced 0=bittime, 1=startbit */
1028 /* Register 4: Output Power register */
1029 #define ACT200L_REG4 0x40
1030 #define ACT200L_OP0 0x01 /* Enable LED1C output */
1031 #define ACT200L_OP1 0x02 /* Enable LED2C output */
1032 #define ACT200L_BLKR 0x04
1034 /* Register 5: Receive Mode register */
1035 #define ACT200L_REG5 0x50
1036 #define ACT200L_RWIDL 0x01 /* fixed 1.6us pulse mode */
1037 /*.. other various IRDA bit modes, and TV remote modes..*/
1039 /* Register 6: Receive Sensitivity register #1 */
1040 #define ACT200L_REG6 0x60
1041 #define ACT200L_RS0 0x01 /* receive threshold bit 0 */
1042 #define ACT200L_RS1 0x02 /* receive threshold bit 1 */
1044 /* Register 7: Receive Sensitivity register #2 */
1045 #define ACT200L_REG7 0x70
1046 #define ACT200L_ENPOS 0x04 /* Ignore the falling edge */
1048 /* Register 8,9: Baud Rate Divider register #1,#2 */
1049 #define ACT200L_REG8 0x80
1050 #define ACT200L_REG9 0x90
1052 #define ACT200L_2400 0x5f
1053 #define ACT200L_9600 0x17
1054 #define ACT200L_19200 0x0b
1055 #define ACT200L_38400 0x05
1056 #define ACT200L_57600 0x03
1057 #define ACT200L_115200 0x01
1059 /* Register 13: Control register #3 */
1060 #define ACT200L_REG13 0xd0
1061 #define ACT200L_SHDW 0x01 /* Enable access to shadow registers */
1063 /* Register 15: Status register */
1064 #define ACT200L_REG15 0xf0
1066 /* Register 21: Control register #4 */
1067 #define ACT200L_REG21 0x50
1068 #define ACT200L_EXCK 0x02 /* Disable clock output driver */
1069 #define ACT200L_OSCL 0x04 /* oscillator in low power, medium accuracy mode */
1071 static void init_act200(void)
1076 ACT200L_REG13 | ACT200L_SHDW,
1077 ACT200L_REG21 | ACT200L_EXCK | ACT200L_OSCL,
1079 ACT200L_REG7 | ACT200L_ENPOS,
1080 ACT200L_REG6 | ACT200L_RS0 | ACT200L_RS1,
1081 ACT200L_REG5 | ACT200L_RWIDL,
1082 ACT200L_REG4 | ACT200L_OP0 | ACT200L_OP1 | ACT200L_BLKR,
1083 ACT200L_REG3 | ACT200L_B0,
1084 ACT200L_REG0 | ACT200L_TXEN | ACT200L_RXEN,
1085 ACT200L_REG8 | (ACT200L_115200 & 0x0f),
1086 ACT200L_REG9 | ((ACT200L_115200 >> 4) & 0x0f),
1087 ACT200L_REG1 | ACT200L_LODB | ACT200L_WIDE
1091 soutp(UART_LCR, UART_LCR_DLAB | UART_LCR_WLEN8);
1093 /* Set divisor to 12 => 9600 Baud */
1095 soutp(UART_DLL, 12);
1098 soutp(UART_LCR, UART_LCR_WLEN8);
1099 /* Set divisor to 12 => 9600 Baud */
1102 soutp(UART_MCR, UART_MCR_RTS|UART_MCR_DTR|UART_MCR_OUT2);
1103 for (i = 0; i < 50; i++)
1106 /* Reset the dongle : set RTS low for 25 ms */
1107 soutp(UART_MCR, UART_MCR_DTR|UART_MCR_OUT2);
1108 for (i = 0; i < 25; i++)
1111 soutp(UART_MCR, UART_MCR_RTS|UART_MCR_DTR|UART_MCR_OUT2);
1114 /* Clear DTR and set RTS to enter command mode */
1115 soutp(UART_MCR, UART_MCR_RTS|UART_MCR_OUT2);
1118 /* send out the control register settings for 115K 7N1 SIR operation */
1119 for (i = 0; i < sizeof(control); i++) {
1120 soutp(UART_TX, control[i]);
1121 /* one byte takes ~1042 usec to transmit at 9600,8N1 */
1125 /* back to normal operation */
1126 soutp(UART_MCR, UART_MCR_RTS|UART_MCR_DTR|UART_MCR_OUT2);
1130 soutp(UART_LCR, sinp(UART_LCR) | UART_LCR_DLAB);
1133 soutp(UART_LCR, UART_LCR_DLAB | UART_LCR_WLEN7);
1135 /* Set divisor to 1 => 115200 Baud */
1140 soutp(UART_LCR, sinp(UART_LCR) & (~UART_LCR_DLAB));
1142 /* Set DLAB 0, 7 Bit */
1143 soutp(UART_LCR, UART_LCR_WLEN7);
1145 /* enable interrupts */
1146 soutp(UART_IER, sinp(UART_IER)|UART_IER_RDI);
1150 #ifdef LIRC_SIR_ACTISYS_ACT220L
1152 * Derived from linux IrDA driver (net/irda/actisys.c)
1153 * Drop me a mail for any kind of comment: maxx@spaceboyz.net
1156 void init_act220(void)
1161 soutp(UART_LCR, UART_LCR_DLAB|UART_LCR_WLEN7);
1165 soutp(UART_DLL, 12);
1168 soutp(UART_LCR, UART_LCR_WLEN7);
1170 /* reset the dongle, set DTR low for 10us */
1171 soutp(UART_MCR, UART_MCR_RTS|UART_MCR_OUT2);
1174 /* back to normal (still 9600) */
1175 soutp(UART_MCR, UART_MCR_DTR|UART_MCR_RTS|UART_MCR_OUT2);
1178 * send RTS pulses until we reach 115200
1179 * i hope this is really the same for act220l/act220l+
1181 for (i = 0; i < 3; i++) {
1183 /* set RTS low for 10 us */
1184 soutp(UART_MCR, UART_MCR_DTR|UART_MCR_OUT2);
1186 /* set RTS high for 10 us */
1187 soutp(UART_MCR, UART_MCR_RTS|UART_MCR_DTR|UART_MCR_OUT2);
1190 /* back to normal operation */
1191 udelay(1500); /* better safe than sorry ;) */
1194 soutp(UART_LCR, UART_LCR_DLAB | UART_LCR_WLEN7);
1196 /* Set divisor to 1 => 115200 Baud */
1200 /* Set DLAB 0, 7 Bit */
1201 /* The dongle doesn't seem to have any problems with operation at 7N1 */
1202 soutp(UART_LCR, UART_LCR_WLEN7);
1204 /* enable interrupts */
1205 soutp(UART_IER, UART_IER_RDI);
1209 static int init_lirc_sir(void)
1213 init_waitqueue_head(&lirc_read_queue);
1214 retval = init_port();
1218 printk(KERN_INFO LIRC_DRIVER_NAME
1224 static int __init lirc_sir_init(void)
1228 retval = init_chrdev();
1231 retval = init_lirc_sir();
1239 static void __exit lirc_sir_exit(void)
1244 printk(KERN_INFO LIRC_DRIVER_NAME ": Uninstalled.\n");
1247 module_init(lirc_sir_init);
1248 module_exit(lirc_sir_exit);
1250 #ifdef LIRC_SIR_TEKRAM
1251 MODULE_DESCRIPTION("Infrared receiver driver for Tekram Irmate 210");
1252 MODULE_AUTHOR("Christoph Bartelmus");
1253 #elif defined(LIRC_ON_SA1100)
1254 MODULE_DESCRIPTION("LIRC driver for StrongARM SA1100 embedded microprocessor");
1255 MODULE_AUTHOR("Christoph Bartelmus");
1256 #elif defined(LIRC_SIR_ACTISYS_ACT200L)
1257 MODULE_DESCRIPTION("LIRC driver for Actisys Act200L");
1258 MODULE_AUTHOR("Karl Bongers");
1259 #elif defined(LIRC_SIR_ACTISYS_ACT220L)
1260 MODULE_DESCRIPTION("LIRC driver for Actisys Act220L(+)");
1261 MODULE_AUTHOR("Jan Roemisch");
1263 MODULE_DESCRIPTION("Infrared receiver driver for SIR type serial ports");
1264 MODULE_AUTHOR("Milan Pikula");
1266 MODULE_LICENSE("GPL");
1268 #ifdef LIRC_ON_SA1100
1269 module_param(irq, int, S_IRUGO);
1270 MODULE_PARM_DESC(irq, "Interrupt (16)");
1272 module_param(io, int, S_IRUGO);
1273 MODULE_PARM_DESC(io, "I/O address base (0x3f8 or 0x2f8)");
1275 module_param(irq, int, S_IRUGO);
1276 MODULE_PARM_DESC(irq, "Interrupt (4 or 3)");
1278 module_param(threshold, int, S_IRUGO);
1279 MODULE_PARM_DESC(threshold, "space detection threshold (3)");
1282 module_param(debug, bool, S_IRUGO | S_IWUSR);
1283 MODULE_PARM_DESC(debug, "Enable debugging messages");