Pileus Git - ~andy/linux/blob - drivers/staging/media/lirc/lirc_sir.c

   1 /*
   2  * LIRC SIR driver, (C) 2000 Milan Pikula <www@fornax.sk>
   3  *
   4  * lirc_sir - Device driver for use with SIR (serial infra red)
   5  * mode of IrDA on many notebooks.
   6  *
   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.
  11  *
  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.
  16  *
  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
  20  *
  21  *
  22  * 2000/09/16 Frank Przybylski <mail@frankprzybylski.de> :
  23  *  added timeout and relaxed pulse detection, removed gap bug
  24  *
  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
  28  *   before),
  29  *   major clean-up
  30  *
  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
  34  */
  35
  36 #include <linux/module.h>
  37 #include <linux/sched.h>
  38 #include <linux/errno.h>
  39 #include <linux/signal.h>
  40 #include <linux/fs.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>
  49 #include <linux/mm.h>
  50 #include <linux/delay.h>
  51 #include <linux/poll.h>
  52 #include <linux/io.h>
  53 #include <asm/irq.h>
  54 #include <linux/fcntl.h>
  55 #ifdef LIRC_ON_SA1100
  56 #include <asm/hardware.h>
  57 #ifdef CONFIG_SA1100_COLLIE
  58 #include <asm/arch/tc35143.h>
  59 #include <asm/ucb1200.h>
  60 #endif
  61 #endif
  62
  63 #include <linux/timer.h>
  64
  65 #include <media/lirc.h>
  66 #include <media/lirc_dev.h>
  67
  68 /* SECTION: Definitions */
  69
  70 /*** Tekram dongle ***/
  71 #ifdef LIRC_SIR_TEKRAM
  72 /* stolen from kernel source */
  73 /* definitions for Tekram dongle */
  74 #define TEKRAM_115200 0x00
  75 #define TEKRAM_57600  0x01
  76 #define TEKRAM_38400  0x02
  77 #define TEKRAM_19200  0x03
  78 #define TEKRAM_9600   0x04
  79 #define TEKRAM_2400   0x08
  80
  81 #define TEKRAM_PW 0x10 /* Pulse select bit */
  82
  83 /* 10bit * 1s/115200bit in milliseconds = 87ms*/
  84 #define TIME_CONST (10000000ul/115200ul)
  85
  86 #endif
  87
  88 #ifdef LIRC_SIR_ACTISYS_ACT200L
  89 static void init_act200(void);
  90 #elif defined(LIRC_SIR_ACTISYS_ACT220L)
  91 static void init_act220(void);
  92 #endif
  93
  94 /*** SA1100 ***/
  95 #ifdef LIRC_ON_SA1100
  96 struct sa1100_ser2_registers {
  97         /* HSSP control register */
  98         unsigned char hscr0;
  99         /* UART registers */
 100         unsigned char utcr0;
 101         unsigned char utcr1;
 102         unsigned char utcr2;
 103         unsigned char utcr3;
 104         unsigned char utcr4;
 105         unsigned char utdr;
 106         unsigned char utsr0;
 107         unsigned char utsr1;
 108 } sr;
 109
 110 static int irq = IRQ_Ser2ICP;
 111
 112 #define LIRC_ON_SA1100_TRANSMITTER_LATENCY 0
 113
 114 /* pulse/space ratio of 50/50 */
 115 static unsigned long pulse_width = (13-LIRC_ON_SA1100_TRANSMITTER_LATENCY);
 116 /* 1000000/freq-pulse_width */
 117 static unsigned long space_width = (13-LIRC_ON_SA1100_TRANSMITTER_LATENCY);
 118 static unsigned int freq = 38000;      /* modulation frequency */
 119 static unsigned int duty_cycle = 50;   /* duty cycle of 50% */
 120
 121 #endif
 122
 123 #define RBUF_LEN 1024
 124 #define WBUF_LEN 1024
 125
 126 #define LIRC_DRIVER_NAME "lirc_sir"
 127
 128 #define PULSE '['
 129
 130 #ifndef LIRC_SIR_TEKRAM
 131 /* 9bit * 1s/115200bit in milli seconds = 78.125ms*/
 132 #define TIME_CONST (9000000ul/115200ul)
 133 #endif
 134
 135
 136 /* timeout for sequences in jiffies (=5/100s), must be longer than TIME_CONST */
 137 #define SIR_TIMEOUT     (HZ*5/100)
 138
 139 #ifndef LIRC_ON_SA1100
 140 #ifndef LIRC_IRQ
 141 #define LIRC_IRQ 4
 142 #endif
 143 #ifndef LIRC_PORT
 144 /* for external dongles, default to com1 */
 145 #if defined(LIRC_SIR_ACTISYS_ACT200L)         || \
 146             defined(LIRC_SIR_ACTISYS_ACT220L) || \
 147             defined(LIRC_SIR_TEKRAM)
 148 #define LIRC_PORT 0x3f8
 149 #else
 150 /* onboard sir ports are typically com3 */
 151 #define LIRC_PORT 0x3e8
 152 #endif
 153 #endif
 154
 155 static int io = LIRC_PORT;
 156 static int irq = LIRC_IRQ;
 157 static int threshold = 3;
 158 #endif
 159
 160 static DEFINE_SPINLOCK(timer_lock);
 161 static struct timer_list timerlist;
 162 /* time of last signal change detected */
 163 static struct timeval last_tv = {0, 0};
 164 /* time of last UART data ready interrupt */
 165 static struct timeval last_intr_tv = {0, 0};
 166 static int last_value;
 167
 168 static DECLARE_WAIT_QUEUE_HEAD(lirc_read_queue);
 169
 170 static DEFINE_SPINLOCK(hardware_lock);
 171
 172 static int rx_buf[RBUF_LEN];
 173 static unsigned int rx_tail, rx_head;
 174
 175 static bool debug;
 176 #define dprintk(fmt, args...)                                           \
 177         do {                                                            \
 178                 if (debug)                                              \
 179                         printk(KERN_DEBUG LIRC_DRIVER_NAME ": "         \
 180                                 fmt, ## args);                          \
 181         } while (0)
 182
 183 /* SECTION: Prototypes */
 184
 185 /* Communication with user-space */
 186 static unsigned int lirc_poll(struct file *file, poll_table *wait);
 187 static ssize_t lirc_read(struct file *file, char *buf, size_t count,
 188                 loff_t *ppos);
 189 static ssize_t lirc_write(struct file *file, const char *buf, size_t n,
 190                 loff_t *pos);
 191 static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
 192 static void add_read_queue(int flag, unsigned long val);
 193 static int init_chrdev(void);
 194 static void drop_chrdev(void);
 195 /* Hardware */
 196 static irqreturn_t sir_interrupt(int irq, void *dev_id);
 197 static void send_space(unsigned long len);
 198 static void send_pulse(unsigned long len);
 199 static int init_hardware(void);
 200 static void drop_hardware(void);
 201 /* Initialisation */
 202 static int init_port(void);
 203 static void drop_port(void);
 204
 205 #ifdef LIRC_ON_SA1100
 206 static void on(void)
 207 {
 208         PPSR |= PPC_TXD2;
 209 }
 210
 211 static void off(void)
 212 {
 213         PPSR &= ~PPC_TXD2;
 214 }
 215 #else
 216 static inline unsigned int sinp(int offset)
 217 {
 218         return inb(io + offset);
 219 }
 220
 221 static inline void soutp(int offset, int value)
 222 {
 223         outb(value, io + offset);
 224 }
 225 #endif
 226
 227 #ifndef MAX_UDELAY_MS
 228 #define MAX_UDELAY_US 5000
 229 #else
 230 #define MAX_UDELAY_US (MAX_UDELAY_MS*1000)
 231 #endif
 232
 233 static void safe_udelay(unsigned long usecs)
 234 {
 235         while (usecs > MAX_UDELAY_US) {
 236                 udelay(MAX_UDELAY_US);
 237                 usecs -= MAX_UDELAY_US;
 238         }
 239         udelay(usecs);
 240 }
 241
 242 /* SECTION: Communication with user-space */
 243
 244 static unsigned int lirc_poll(struct file *file, poll_table *wait)
 245 {
 246         poll_wait(file, &lirc_read_queue, wait);
 247         if (rx_head != rx_tail)
 248                 return POLLIN | POLLRDNORM;
 249         return 0;
 250 }
 251
 252 static ssize_t lirc_read(struct file *file, char *buf, size_t count,
 253                 loff_t *ppos)
 254 {
 255         int n = 0;
 256         int retval = 0;
 257         DECLARE_WAITQUEUE(wait, current);
 258
 259         if (count % sizeof(int))
 260                 return -EINVAL;
 261
 262         add_wait_queue(&lirc_read_queue, &wait);
 263         set_current_state(TASK_INTERRUPTIBLE);
 264         while (n < count) {
 265                 if (rx_head != rx_tail) {
 266                         if (copy_to_user((void *) buf + n,
 267                                         (void *) (rx_buf + rx_head),
 268                                         sizeof(int))) {
 269                                 retval = -EFAULT;
 270                                 break;
 271                         }
 272                         rx_head = (rx_head + 1) & (RBUF_LEN - 1);
 273                         n += sizeof(int);
 274                 } else {
 275                         if (file->f_flags & O_NONBLOCK) {
 276                                 retval = -EAGAIN;
 277                                 break;
 278                         }
 279                         if (signal_pending(current)) {
 280                                 retval = -ERESTARTSYS;
 281                                 break;
 282                         }
 283                         schedule();
 284                         set_current_state(TASK_INTERRUPTIBLE);
 285                 }
 286         }
 287         remove_wait_queue(&lirc_read_queue, &wait);
 288         set_current_state(TASK_RUNNING);
 289         return n ? n : retval;
 290 }
 291 static ssize_t lirc_write(struct file *file, const char *buf, size_t n,
 292                                 loff_t *pos)
 293 {
 294         unsigned long flags;
 295         int i, count;
 296         int *tx_buf;
 297
 298         count = n / sizeof(int);
 299         if (n % sizeof(int) || count % 2 == 0)
 300                 return -EINVAL;
 301         tx_buf = memdup_user(buf, n);
 302         if (IS_ERR(tx_buf))
 303                 return PTR_ERR(tx_buf);
 304         i = 0;
 305 #ifdef LIRC_ON_SA1100
 306         /* disable receiver */
 307         Ser2UTCR3 = 0;
 308 #endif
 309         local_irq_save(flags);
 310         while (1) {
 311                 if (i >= count)
 312                         break;
 313                 if (tx_buf[i])
 314                         send_pulse(tx_buf[i]);
 315                 i++;
 316                 if (i >= count)
 317                         break;
 318                 if (tx_buf[i])
 319                         send_space(tx_buf[i]);
 320                 i++;
 321         }
 322         local_irq_restore(flags);
 323 #ifdef LIRC_ON_SA1100
 324         off();
 325         udelay(1000); /* wait 1ms for IR diode to recover */
 326         Ser2UTCR3 = 0;
 327         /* clear status register to prevent unwanted interrupts */
 328         Ser2UTSR0 &= (UTSR0_RID | UTSR0_RBB | UTSR0_REB);
 329         /* enable receiver */
 330         Ser2UTCR3 = UTCR3_RXE|UTCR3_RIE;
 331 #endif
 332         kfree(tx_buf);
 333         return count;
 334 }
 335
 336 static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
 337 {
 338         int retval = 0;
 339         __u32 value = 0;
 340 #ifdef LIRC_ON_SA1100
 341
 342         if (cmd == LIRC_GET_FEATURES)
 343                 value = LIRC_CAN_SEND_PULSE |
 344                         LIRC_CAN_SET_SEND_DUTY_CYCLE |
 345                         LIRC_CAN_SET_SEND_CARRIER |
 346                         LIRC_CAN_REC_MODE2;
 347         else if (cmd == LIRC_GET_SEND_MODE)
 348                 value = LIRC_MODE_PULSE;
 349         else if (cmd == LIRC_GET_REC_MODE)
 350                 value = LIRC_MODE_MODE2;
 351 #else
 352         if (cmd == LIRC_GET_FEATURES)
 353                 value = LIRC_CAN_SEND_PULSE | LIRC_CAN_REC_MODE2;
 354         else if (cmd == LIRC_GET_SEND_MODE)
 355                 value = LIRC_MODE_PULSE;
 356         else if (cmd == LIRC_GET_REC_MODE)
 357                 value = LIRC_MODE_MODE2;
 358 #endif
 359
 360         switch (cmd) {
 361         case LIRC_GET_FEATURES:
 362         case LIRC_GET_SEND_MODE:
 363         case LIRC_GET_REC_MODE:
 364                 retval = put_user(value, (__u32 *) arg);
 365                 break;
 366
 367         case LIRC_SET_SEND_MODE:
 368         case LIRC_SET_REC_MODE:
 369                 retval = get_user(value, (__u32 *) arg);
 370                 break;
 371 #ifdef LIRC_ON_SA1100
 372         case LIRC_SET_SEND_DUTY_CYCLE:
 373                 retval = get_user(value, (__u32 *) arg);
 374                 if (retval)
 375                         return retval;
 376                 if (value <= 0 || value > 100)
 377                         return -EINVAL;
 378                 /* (value/100)*(1000000/freq) */
 379                 duty_cycle = value;
 380                 pulse_width = (unsigned long) duty_cycle*10000/freq;
 381                 space_width = (unsigned long) 1000000L/freq-pulse_width;
 382                 if (pulse_width >= LIRC_ON_SA1100_TRANSMITTER_LATENCY)
 383                         pulse_width -= LIRC_ON_SA1100_TRANSMITTER_LATENCY;
 384                 if (space_width >= LIRC_ON_SA1100_TRANSMITTER_LATENCY)
 385                         space_width -= LIRC_ON_SA1100_TRANSMITTER_LATENCY;
 386                 break;
 387         case LIRC_SET_SEND_CARRIER:
 388                 retval = get_user(value, (__u32 *) arg);
 389                 if (retval)
 390                         return retval;
 391                 if (value > 500000 || value < 20000)
 392                         return -EINVAL;
 393                 freq = value;
 394                 pulse_width = (unsigned long) duty_cycle*10000/freq;
 395                 space_width = (unsigned long) 1000000L/freq-pulse_width;
 396                 if (pulse_width >= LIRC_ON_SA1100_TRANSMITTER_LATENCY)
 397                         pulse_width -= LIRC_ON_SA1100_TRANSMITTER_LATENCY;
 398                 if (space_width >= LIRC_ON_SA1100_TRANSMITTER_LATENCY)
 399                         space_width -= LIRC_ON_SA1100_TRANSMITTER_LATENCY;
 400                 break;
 401 #endif
 402         default:
 403                 retval = -ENOIOCTLCMD;
 404
 405         }
 406
 407         if (retval)
 408                 return retval;
 409         if (cmd == LIRC_SET_REC_MODE) {
 410                 if (value != LIRC_MODE_MODE2)
 411                         retval = -ENOSYS;
 412         } else if (cmd == LIRC_SET_SEND_MODE) {
 413                 if (value != LIRC_MODE_PULSE)
 414                         retval = -ENOSYS;
 415         }
 416
 417         return retval;
 418 }
 419
 420 static void add_read_queue(int flag, unsigned long val)
 421 {
 422         unsigned int new_rx_tail;
 423         int newval;
 424
 425         dprintk("add flag %d with val %lu\n", flag, val);
 426
 427         newval = val & PULSE_MASK;
 428
 429         /*
 430          * statistically, pulses are ~TIME_CONST/2 too long. we could
 431          * maybe make this more exact, but this is good enough
 432          */
 433         if (flag) {
 434                 /* pulse */
 435                 if (newval > TIME_CONST/2)
 436                         newval -= TIME_CONST/2;
 437                 else /* should not ever happen */
 438                         newval = 1;
 439                 newval |= PULSE_BIT;
 440         } else {
 441                 newval += TIME_CONST/2;
 442         }
 443         new_rx_tail = (rx_tail + 1) & (RBUF_LEN - 1);
 444         if (new_rx_tail == rx_head) {
 445                 dprintk("Buffer overrun.\n");
 446                 return;
 447         }
 448         rx_buf[rx_tail] = newval;
 449         rx_tail = new_rx_tail;
 450         wake_up_interruptible(&lirc_read_queue);
 451 }
 452
 453 static const struct file_operations lirc_fops = {
 454         .owner          = THIS_MODULE,
 455         .read           = lirc_read,
 456         .write          = lirc_write,
 457         .poll           = lirc_poll,
 458         .unlocked_ioctl = lirc_ioctl,
 459 #ifdef CONFIG_COMPAT
 460         .compat_ioctl   = lirc_ioctl,
 461 #endif
 462         .open           = lirc_dev_fop_open,
 463         .release        = lirc_dev_fop_close,
 464         .llseek         = no_llseek,
 465 };
 466
 467 static int set_use_inc(void *data)
 468 {
 469         return 0;
 470 }
 471
 472 static void set_use_dec(void *data)
 473 {
 474 }
 475
 476 static struct lirc_driver driver = {
 477         .name           = LIRC_DRIVER_NAME,
 478         .minor          = -1,
 479         .code_length    = 1,
 480         .sample_rate    = 0,
 481         .data           = NULL,
 482         .add_to_buf     = NULL,
 483         .set_use_inc    = set_use_inc,
 484         .set_use_dec    = set_use_dec,
 485         .fops           = &lirc_fops,
 486         .dev            = NULL,
 487         .owner          = THIS_MODULE,
 488 };
 489
 490
 491 static int init_chrdev(void)
 492 {
 493         driver.minor = lirc_register_driver(&driver);
 494         if (driver.minor < 0) {
 495                 printk(KERN_ERR LIRC_DRIVER_NAME ": init_chrdev() failed.\n");
 496                 return -EIO;
 497         }
 498         return 0;
 499 }
 500
 501 static void drop_chrdev(void)
 502 {
 503         lirc_unregister_driver(driver.minor);
 504 }
 505
 506 /* SECTION: Hardware */
 507 static long delta(struct timeval *tv1, struct timeval *tv2)
 508 {
 509         unsigned long deltv;
 510
 511         deltv = tv2->tv_sec - tv1->tv_sec;
 512         if (deltv > 15)
 513                 deltv = 0xFFFFFF;
 514         else
 515                 deltv = deltv*1000000 +
 516                         tv2->tv_usec -
 517                         tv1->tv_usec;
 518         return deltv;
 519 }
 520
 521 static void sir_timeout(unsigned long data)
 522 {
 523         /*
 524          * if last received signal was a pulse, but receiving stopped
 525          * within the 9 bit frame, we need to finish this pulse and
 526          * simulate a signal change to from pulse to space. Otherwise
 527          * upper layers will receive two sequences next time.
 528          */
 529
 530         unsigned long flags;
 531         unsigned long pulse_end;
 532
 533         /* avoid interference with interrupt */
 534         spin_lock_irqsave(&timer_lock, flags);
 535         if (last_value) {
 536 #ifndef LIRC_ON_SA1100
 537                 /* clear unread bits in UART and restart */
 538                 outb(UART_FCR_CLEAR_RCVR, io + UART_FCR);
 539 #endif
 540                 /* determine 'virtual' pulse end: */
 541                 pulse_end = delta(&last_tv, &last_intr_tv);
 542                 dprintk("timeout add %d for %lu usec\n", last_value, pulse_end);
 543                 add_read_queue(last_value, pulse_end);
 544                 last_value = 0;
 545                 last_tv = last_intr_tv;
 546         }
 547         spin_unlock_irqrestore(&timer_lock, flags);
 548 }
 549
 550 static irqreturn_t sir_interrupt(int irq, void *dev_id)
 551 {
 552         unsigned char data;
 553         struct timeval curr_tv;
 554         static unsigned long deltv;
 555 #ifdef LIRC_ON_SA1100
 556         int status;
 557         static int n;
 558
 559         status = Ser2UTSR0;
 560         /*
 561          * Deal with any receive errors first.  The bytes in error may be
 562          * the only bytes in the receive FIFO, so we do this first.
 563          */
 564         while (status & UTSR0_EIF) {
 565                 int bstat;
 566
 567                 if (debug) {
 568                         dprintk("EIF\n");
 569                         bstat = Ser2UTSR1;
 570
 571                         if (bstat & UTSR1_FRE)
 572                                 dprintk("frame error\n");
 573                         if (bstat & UTSR1_ROR)
 574                                 dprintk("receive fifo overrun\n");
 575                         if (bstat & UTSR1_PRE)
 576                                 dprintk("parity error\n");
 577                 }
 578
 579                 bstat = Ser2UTDR;
 580                 n++;
 581                 status = Ser2UTSR0;
 582         }
 583
 584         if (status & (UTSR0_RFS | UTSR0_RID)) {
 585                 do_gettimeofday(&curr_tv);
 586                 deltv = delta(&last_tv, &curr_tv);
 587                 do {
 588                         data = Ser2UTDR;
 589                         dprintk("%d data: %u\n", n, (unsigned int) data);
 590                         n++;
 591                 } while (status & UTSR0_RID && /* do not empty fifo in order to
 592                                                 * get UTSR0_RID in any case */
 593                       Ser2UTSR1 & UTSR1_RNE); /* data ready */
 594
 595                 if (status&UTSR0_RID) {
 596                         add_read_queue(0 , deltv - n * TIME_CONST); /*space*/
 597                         add_read_queue(1, n * TIME_CONST); /*pulse*/
 598                         n = 0;
 599                         last_tv = curr_tv;
 600                 }
 601         }
 602
 603         if (status & UTSR0_TFS)
 604                 printk(KERN_ERR "transmit fifo not full, shouldn't happen\n");
 605
 606         /* We must clear certain bits. */
 607         status &= (UTSR0_RID | UTSR0_RBB | UTSR0_REB);
 608         if (status)
 609                 Ser2UTSR0 = status;
 610 #else
 611         unsigned long deltintrtv;
 612         unsigned long flags;
 613         int iir, lsr;
 614
 615         while ((iir = inb(io + UART_IIR) & UART_IIR_ID)) {
 616                 switch (iir&UART_IIR_ID) { /* FIXME toto treba preriedit */
 617                 case UART_IIR_MSI:
 618                         (void) inb(io + UART_MSR);
 619                         break;
 620                 case UART_IIR_RLSI:
 621                         (void) inb(io + UART_LSR);
 622                         break;
 623                 case UART_IIR_THRI:
 624 #if 0
 625                         if (lsr & UART_LSR_THRE) /* FIFO is empty */
 626                                 outb(data, io + UART_TX)
 627 #endif
 628                         break;
 629                 case UART_IIR_RDI:
 630                         /* avoid interference with timer */
 631                         spin_lock_irqsave(&timer_lock, flags);
 632                         do {
 633                                 del_timer(&timerlist);
 634                                 data = inb(io + UART_RX);
 635                                 do_gettimeofday(&curr_tv);
 636                                 deltv = delta(&last_tv, &curr_tv);
 637                                 deltintrtv = delta(&last_intr_tv, &curr_tv);
 638                                 dprintk("t %lu, d %d\n", deltintrtv, (int)data);
 639                                 /*
 640                                  * if nothing came in last X cycles,
 641                                  * it was gap
 642                                  */
 643                                 if (deltintrtv > TIME_CONST * threshold) {
 644                                         if (last_value) {
 645                                                 dprintk("GAP\n");
 646                                                 /* simulate signal change */
 647                                                 add_read_queue(last_value,
 648                                                                deltv -
 649                                                                deltintrtv);
 650                                                 last_value = 0;
 651                                                 last_tv.tv_sec =
 652                                                         last_intr_tv.tv_sec;
 653                                                 last_tv.tv_usec =
 654                                                         last_intr_tv.tv_usec;
 655                                                 deltv = deltintrtv;
 656                                         }
 657                                 }
 658                                 data = 1;
 659                                 if (data ^ last_value) {
 660                                         /*
 661                                          * deltintrtv > 2*TIME_CONST, remember?
 662                                          * the other case is timeout
 663                                          */
 664                                         add_read_queue(last_value,
 665                                                        deltv-TIME_CONST);
 666                                         last_value = data;
 667                                         last_tv = curr_tv;
 668                                         if (last_tv.tv_usec >= TIME_CONST) {
 669                                                 last_tv.tv_usec -= TIME_CONST;
 670                                         } else {
 671                                                 last_tv.tv_sec--;
 672                                                 last_tv.tv_usec += 1000000 -
 673                                                         TIME_CONST;
 674                                         }
 675                                 }
 676                                 last_intr_tv = curr_tv;
 677                                 if (data) {
 678                                         /*
 679                                          * start timer for end of
 680                                          * sequence detection
 681                                          */
 682                                         timerlist.expires = jiffies +
 683                                                                 SIR_TIMEOUT;
 684                                         add_timer(&timerlist);
 685                                 }
 686
 687                                 lsr = inb(io + UART_LSR);
 688                         } while (lsr & UART_LSR_DR); /* data ready */
 689                         spin_unlock_irqrestore(&timer_lock, flags);
 690                         break;
 691                 default:
 692                         break;
 693                 }
 694         }
 695 #endif
 696         return IRQ_RETVAL(IRQ_HANDLED);
 697 }
 698
 699 #ifdef LIRC_ON_SA1100
 700 static void send_pulse(unsigned long length)
 701 {
 702         unsigned long k, delay;
 703         int flag;
 704
 705         if (length == 0)
 706                 return;
 707         /*
 708          * this won't give us the carrier frequency we really want
 709          * due to integer arithmetic, but we can accept this inaccuracy
 710          */
 711
 712         for (k = flag = 0; k < length; k += delay, flag = !flag) {
 713                 if (flag) {
 714                         off();
 715                         delay = space_width;
 716                 } else {
 717                         on();
 718                         delay = pulse_width;
 719                 }
 720                 safe_udelay(delay);
 721         }
 722         off();
 723 }
 724
 725 static void send_space(unsigned long length)
 726 {
 727         if (length == 0)
 728                 return;
 729         off();
 730         safe_udelay(length);
 731 }
 732 #else
 733 static void send_space(unsigned long len)
 734 {
 735         safe_udelay(len);
 736 }
 737
 738 static void send_pulse(unsigned long len)
 739 {
 740         long bytes_out = len / TIME_CONST;
 741
 742         if (bytes_out == 0)
 743                 bytes_out++;
 744
 745         while (bytes_out--) {
 746                 outb(PULSE, io + UART_TX);
 747                 /* FIXME treba seriozne cakanie z char/serial.c */
 748                 while (!(inb(io + UART_LSR) & UART_LSR_THRE))
 749                         ;
 750         }
 751 }
 752 #endif
 753
 754 #ifdef CONFIG_SA1100_COLLIE
 755 static int sa1100_irda_set_power_collie(int state)
 756 {
 757         if (state) {
 758                 /*
 759                  *  0 - off
 760                  *  1 - short range, lowest power
 761                  *  2 - medium range, medium power
 762                  *  3 - maximum range, high power
 763                  */
 764                 ucb1200_set_io_direction(TC35143_GPIO_IR_ON,
 765                                          TC35143_IODIR_OUTPUT);
 766                 ucb1200_set_io(TC35143_GPIO_IR_ON, TC35143_IODAT_LOW);
 767                 udelay(100);
 768         } else {
 769                 /* OFF */
 770                 ucb1200_set_io_direction(TC35143_GPIO_IR_ON,
 771                                          TC35143_IODIR_OUTPUT);
 772                 ucb1200_set_io(TC35143_GPIO_IR_ON, TC35143_IODAT_HIGH);
 773         }
 774         return 0;
 775 }
 776 #endif
 777
 778 static int init_hardware(void)
 779 {
 780         unsigned long flags;
 781
 782         spin_lock_irqsave(&hardware_lock, flags);
 783         /* reset UART */
 784 #ifdef LIRC_ON_SA1100
 785 #ifdef CONFIG_SA1100_BITSY
 786         if (machine_is_bitsy()) {
 787                 printk(KERN_INFO "Power on IR module\n");
 788                 set_bitsy_egpio(EGPIO_BITSY_IR_ON);
 789         }
 790 #endif
 791 #ifdef CONFIG_SA1100_COLLIE
 792         sa1100_irda_set_power_collie(3);        /* power on */
 793 #endif
 794         sr.hscr0 = Ser2HSCR0;
 795
 796         sr.utcr0 = Ser2UTCR0;
 797         sr.utcr1 = Ser2UTCR1;
 798         sr.utcr2 = Ser2UTCR2;
 799         sr.utcr3 = Ser2UTCR3;
 800         sr.utcr4 = Ser2UTCR4;
 801
 802         sr.utdr = Ser2UTDR;
 803         sr.utsr0 = Ser2UTSR0;
 804         sr.utsr1 = Ser2UTSR1;
 805
 806         /* configure GPIO */
 807         /* output */
 808         PPDR |= PPC_TXD2;
 809         PSDR |= PPC_TXD2;
 810         /* set output to 0 */
 811         off();
 812
 813         /* Enable HP-SIR modulation, and ensure that the port is disabled. */
 814         Ser2UTCR3 = 0;
 815         Ser2HSCR0 = sr.hscr0 & (~HSCR0_HSSP);
 816
 817         /* clear status register to prevent unwanted interrupts */
 818         Ser2UTSR0 &= (UTSR0_RID | UTSR0_RBB | UTSR0_REB);
 819
 820         /* 7N1 */
 821         Ser2UTCR0 = UTCR0_1StpBit|UTCR0_7BitData;
 822         /* 115200 */
 823         Ser2UTCR1 = 0;
 824         Ser2UTCR2 = 1;
 825         /* use HPSIR, 1.6 usec pulses */
 826         Ser2UTCR4 = UTCR4_HPSIR|UTCR4_Z1_6us;
 827
 828         /* enable receiver, receive fifo interrupt */
 829         Ser2UTCR3 = UTCR3_RXE|UTCR3_RIE;
 830
 831         /* clear status register to prevent unwanted interrupts */
 832         Ser2UTSR0 &= (UTSR0_RID | UTSR0_RBB | UTSR0_REB);
 833
 834 #elif defined(LIRC_SIR_TEKRAM)
 835         /* disable FIFO */
 836         soutp(UART_FCR,
 837               UART_FCR_CLEAR_RCVR|
 838               UART_FCR_CLEAR_XMIT|
 839               UART_FCR_TRIGGER_1);
 840
 841         /* Set DLAB 0. */
 842         soutp(UART_LCR, sinp(UART_LCR) & (~UART_LCR_DLAB));
 843
 844         /* First of all, disable all interrupts */
 845         soutp(UART_IER, sinp(UART_IER) &
 846               (~(UART_IER_MSI|UART_IER_RLSI|UART_IER_THRI|UART_IER_RDI)));
 847
 848         /* Set DLAB 1. */
 849         soutp(UART_LCR, sinp(UART_LCR) | UART_LCR_DLAB);
 850
 851         /* Set divisor to 12 => 9600 Baud */
 852         soutp(UART_DLM, 0);
 853         soutp(UART_DLL, 12);
 854
 855         /* Set DLAB 0. */
 856         soutp(UART_LCR, sinp(UART_LCR) & (~UART_LCR_DLAB));
 857
 858         /* power supply */
 859         soutp(UART_MCR, UART_MCR_RTS|UART_MCR_DTR|UART_MCR_OUT2);
 860         safe_udelay(50*1000);
 861
 862         /* -DTR low -> reset PIC */
 863         soutp(UART_MCR, UART_MCR_RTS|UART_MCR_OUT2);
 864         udelay(1*1000);
 865
 866         soutp(UART_MCR, UART_MCR_RTS|UART_MCR_DTR|UART_MCR_OUT2);
 867         udelay(100);
 868
 869
 870         /* -RTS low -> send control byte */
 871         soutp(UART_MCR, UART_MCR_DTR|UART_MCR_OUT2);
 872         udelay(7);
 873         soutp(UART_TX, TEKRAM_115200|TEKRAM_PW);
 874
 875         /* one byte takes ~1042 usec to transmit at 9600,8N1 */
 876         udelay(1500);
 877
 878         /* back to normal operation */
 879         soutp(UART_MCR, UART_MCR_RTS|UART_MCR_DTR|UART_MCR_OUT2);
 880         udelay(50);
 881
 882         udelay(1500);
 883
 884         /* read previous control byte */
 885         printk(KERN_INFO LIRC_DRIVER_NAME
 886                ": 0x%02x\n", sinp(UART_RX));
 887
 888         /* Set DLAB 1. */
 889         soutp(UART_LCR, sinp(UART_LCR) | UART_LCR_DLAB);
 890
 891         /* Set divisor to 1 => 115200 Baud */
 892         soutp(UART_DLM, 0);
 893         soutp(UART_DLL, 1);
 894
 895         /* Set DLAB 0, 8 Bit */
 896         soutp(UART_LCR, UART_LCR_WLEN8);
 897         /* enable interrupts */
 898         soutp(UART_IER, sinp(UART_IER)|UART_IER_RDI);
 899 #else
 900         outb(0, io + UART_MCR);
 901         outb(0, io + UART_IER);
 902         /* init UART */
 903         /* set DLAB, speed = 115200 */
 904         outb(UART_LCR_DLAB | UART_LCR_WLEN7, io + UART_LCR);
 905         outb(1, io + UART_DLL); outb(0, io + UART_DLM);
 906         /* 7N1+start = 9 bits at 115200 ~ 3 bits at 44000 */
 907         outb(UART_LCR_WLEN7, io + UART_LCR);
 908         /* FIFO operation */
 909         outb(UART_FCR_ENABLE_FIFO, io + UART_FCR);
 910         /* interrupts */
 911         /* outb(UART_IER_RLSI|UART_IER_RDI|UART_IER_THRI, io + UART_IER); */
 912         outb(UART_IER_RDI, io + UART_IER);
 913         /* turn on UART */
 914         outb(UART_MCR_DTR|UART_MCR_RTS|UART_MCR_OUT2, io + UART_MCR);
 915 #ifdef LIRC_SIR_ACTISYS_ACT200L
 916         init_act200();
 917 #elif defined(LIRC_SIR_ACTISYS_ACT220L)
 918         init_act220();
 919 #endif
 920 #endif
 921         spin_unlock_irqrestore(&hardware_lock, flags);
 922         return 0;
 923 }
 924
 925 static void drop_hardware(void)
 926 {
 927         unsigned long flags;
 928
 929         spin_lock_irqsave(&hardware_lock, flags);
 930
 931 #ifdef LIRC_ON_SA1100
 932         Ser2UTCR3 = 0;
 933
 934         Ser2UTCR0 = sr.utcr0;
 935         Ser2UTCR1 = sr.utcr1;
 936         Ser2UTCR2 = sr.utcr2;
 937         Ser2UTCR4 = sr.utcr4;
 938         Ser2UTCR3 = sr.utcr3;
 939
 940         Ser2HSCR0 = sr.hscr0;
 941 #ifdef CONFIG_SA1100_BITSY
 942         if (machine_is_bitsy())
 943                 clr_bitsy_egpio(EGPIO_BITSY_IR_ON);
 944 #endif
 945 #ifdef CONFIG_SA1100_COLLIE
 946         sa1100_irda_set_power_collie(0);        /* power off */
 947 #endif
 948 #else
 949         /* turn off interrupts */
 950         outb(0, io + UART_IER);
 951 #endif
 952         spin_unlock_irqrestore(&hardware_lock, flags);
 953 }
 954
 955 /* SECTION: Initialisation */
 956
 957 static int init_port(void)
 958 {
 959         int retval;
 960
 961         /* get I/O port access and IRQ line */
 962 #ifndef LIRC_ON_SA1100
 963         if (request_region(io, 8, LIRC_DRIVER_NAME) == NULL) {
 964                 printk(KERN_ERR LIRC_DRIVER_NAME
 965                        ": i/o port 0x%.4x already in use.\n", io);
 966                 return -EBUSY;
 967         }
 968 #endif
 969         retval = request_irq(irq, sir_interrupt, 0,
 970                              LIRC_DRIVER_NAME, NULL);
 971         if (retval < 0) {
 972 #               ifndef LIRC_ON_SA1100
 973                 release_region(io, 8);
 974 #               endif
 975                 printk(KERN_ERR LIRC_DRIVER_NAME
 976                         ": IRQ %d already in use.\n",
 977                         irq);
 978                 return retval;
 979         }
 980 #ifndef LIRC_ON_SA1100
 981         printk(KERN_INFO LIRC_DRIVER_NAME
 982                 ": I/O port 0x%.4x, IRQ %d.\n",
 983                 io, irq);
 984 #endif
 985
 986         init_timer(&timerlist);
 987         timerlist.function = sir_timeout;
 988         timerlist.data = 0xabadcafe;
 989
 990         return 0;
 991 }
 992
 993 static void drop_port(void)
 994 {
 995         free_irq(irq, NULL);
 996         del_timer_sync(&timerlist);
 997 #ifndef LIRC_ON_SA1100
 998         release_region(io, 8);
 999 #endif
1000 }
1001
1002 #ifdef LIRC_SIR_ACTISYS_ACT200L
1003 /* Crystal/Cirrus CS8130 IR transceiver, used in Actisys Act200L dongle */
1004 /* some code borrowed from Linux IRDA driver */
1005
1006 /* Register 0: Control register #1 */
1007 #define ACT200L_REG0    0x00
1008 #define ACT200L_TXEN    0x01 /* Enable transmitter */
1009 #define ACT200L_RXEN    0x02 /* Enable receiver */
1010 #define ACT200L_ECHO    0x08 /* Echo control chars */
1011
1012 /* Register 1: Control register #2 */
1013 #define ACT200L_REG1    0x10
1014 #define ACT200L_LODB    0x01 /* Load new baud rate count value */
1015 #define ACT200L_WIDE    0x04 /* Expand the maximum allowable pulse */
1016
1017 /* Register 3: Transmit mode register #2 */
1018 #define ACT200L_REG3    0x30
1019 #define ACT200L_B0      0x01 /* DataBits, 0=6, 1=7, 2=8, 3=9(8P)  */
1020 #define ACT200L_B1      0x02 /* DataBits, 0=6, 1=7, 2=8, 3=9(8P)  */
1021 #define ACT200L_CHSY    0x04 /* StartBit Synced 0=bittime, 1=startbit */
1022
1023 /* Register 4: Output Power register */
1024 #define ACT200L_REG4    0x40
1025 #define ACT200L_OP0     0x01 /* Enable LED1C output */
1026 #define ACT200L_OP1     0x02 /* Enable LED2C output */
1027 #define ACT200L_BLKR    0x04
1028
1029 /* Register 5: Receive Mode register */
1030 #define ACT200L_REG5    0x50
1031 #define ACT200L_RWIDL   0x01 /* fixed 1.6us pulse mode */
1032     /*.. other various IRDA bit modes, and TV remote modes..*/
1033
1034 /* Register 6: Receive Sensitivity register #1 */
1035 #define ACT200L_REG6    0x60
1036 #define ACT200L_RS0     0x01 /* receive threshold bit 0 */
1037 #define ACT200L_RS1     0x02 /* receive threshold bit 1 */
1038
1039 /* Register 7: Receive Sensitivity register #2 */
1040 #define ACT200L_REG7    0x70
1041 #define ACT200L_ENPOS   0x04 /* Ignore the falling edge */
1042
1043 /* Register 8,9: Baud Rate Divider register #1,#2 */
1044 #define ACT200L_REG8    0x80
1045 #define ACT200L_REG9    0x90
1046
1047 #define ACT200L_2400    0x5f
1048 #define ACT200L_9600    0x17
1049 #define ACT200L_19200   0x0b
1050 #define ACT200L_38400   0x05
1051 #define ACT200L_57600   0x03
1052 #define ACT200L_115200  0x01
1053
1054 /* Register 13: Control register #3 */
1055 #define ACT200L_REG13   0xd0
1056 #define ACT200L_SHDW    0x01 /* Enable access to shadow registers */
1057
1058 /* Register 15: Status register */
1059 #define ACT200L_REG15   0xf0
1060
1061 /* Register 21: Control register #4 */
1062 #define ACT200L_REG21   0x50
1063 #define ACT200L_EXCK    0x02 /* Disable clock output driver */
1064 #define ACT200L_OSCL    0x04 /* oscillator in low power, medium accuracy mode */
1065
1066 static void init_act200(void)
1067 {
1068         int i;
1069         __u8 control[] = {
1070                 ACT200L_REG15,
1071                 ACT200L_REG13 | ACT200L_SHDW,
1072                 ACT200L_REG21 | ACT200L_EXCK | ACT200L_OSCL,
1073                 ACT200L_REG13,
1074                 ACT200L_REG7  | ACT200L_ENPOS,
1075                 ACT200L_REG6  | ACT200L_RS0  | ACT200L_RS1,
1076                 ACT200L_REG5  | ACT200L_RWIDL,
1077                 ACT200L_REG4  | ACT200L_OP0  | ACT200L_OP1 | ACT200L_BLKR,
1078                 ACT200L_REG3  | ACT200L_B0,
1079                 ACT200L_REG0  | ACT200L_TXEN | ACT200L_RXEN,
1080                 ACT200L_REG8 |  (ACT200L_115200       & 0x0f),
1081                 ACT200L_REG9 | ((ACT200L_115200 >> 4) & 0x0f),
1082                 ACT200L_REG1 | ACT200L_LODB | ACT200L_WIDE
1083         };
1084
1085         /* Set DLAB 1. */
1086         soutp(UART_LCR, UART_LCR_DLAB | UART_LCR_WLEN8);
1087
1088         /* Set divisor to 12 => 9600 Baud */
1089         soutp(UART_DLM, 0);
1090         soutp(UART_DLL, 12);
1091
1092         /* Set DLAB 0. */
1093         soutp(UART_LCR, UART_LCR_WLEN8);
1094         /* Set divisor to 12 => 9600 Baud */
1095
1096         /* power supply */
1097         soutp(UART_MCR, UART_MCR_RTS|UART_MCR_DTR|UART_MCR_OUT2);
1098         for (i = 0; i < 50; i++)
1099                 safe_udelay(1000);
1100
1101                 /* Reset the dongle : set RTS low for 25 ms */
1102         soutp(UART_MCR, UART_MCR_DTR|UART_MCR_OUT2);
1103         for (i = 0; i < 25; i++)
1104                 udelay(1000);
1105
1106         soutp(UART_MCR, UART_MCR_RTS|UART_MCR_DTR|UART_MCR_OUT2);
1107         udelay(100);
1108
1109         /* Clear DTR and set RTS to enter command mode */
1110         soutp(UART_MCR, UART_MCR_RTS|UART_MCR_OUT2);
1111         udelay(7);
1112
1113         /* send out the control register settings for 115K 7N1 SIR operation */
1114         for (i = 0; i < sizeof(control); i++) {
1115                 soutp(UART_TX, control[i]);
1116                 /* one byte takes ~1042 usec to transmit at 9600,8N1 */
1117                 udelay(1500);
1118         }
1119
1120         /* back to normal operation */
1121         soutp(UART_MCR, UART_MCR_RTS|UART_MCR_DTR|UART_MCR_OUT2);
1122         udelay(50);
1123
1124         udelay(1500);
1125         soutp(UART_LCR, sinp(UART_LCR) | UART_LCR_DLAB);
1126
1127         /* Set DLAB 1. */
1128         soutp(UART_LCR, UART_LCR_DLAB | UART_LCR_WLEN7);
1129
1130         /* Set divisor to 1 => 115200 Baud */
1131         soutp(UART_DLM, 0);
1132         soutp(UART_DLL, 1);
1133
1134         /* Set DLAB 0. */
1135         soutp(UART_LCR, sinp(UART_LCR) & (~UART_LCR_DLAB));
1136
1137         /* Set DLAB 0, 7 Bit */
1138         soutp(UART_LCR, UART_LCR_WLEN7);
1139
1140         /* enable interrupts */
1141         soutp(UART_IER, sinp(UART_IER)|UART_IER_RDI);
1142 }
1143 #endif
1144
1145 #ifdef LIRC_SIR_ACTISYS_ACT220L
1146 /*
1147  * Derived from linux IrDA driver (net/irda/actisys.c)
1148  * Drop me a mail for any kind of comment: maxx@spaceboyz.net
1149  */
1150
1151 void init_act220(void)
1152 {
1153         int i;
1154
1155         /* DLAB 1 */
1156         soutp(UART_LCR, UART_LCR_DLAB|UART_LCR_WLEN7);
1157
1158         /* 9600 baud */
1159         soutp(UART_DLM, 0);
1160         soutp(UART_DLL, 12);
1161
1162         /* DLAB 0 */
1163         soutp(UART_LCR, UART_LCR_WLEN7);
1164
1165         /* reset the dongle, set DTR low for 10us */
1166         soutp(UART_MCR, UART_MCR_RTS|UART_MCR_OUT2);
1167         udelay(10);
1168
1169         /* back to normal (still 9600) */
1170         soutp(UART_MCR, UART_MCR_DTR|UART_MCR_RTS|UART_MCR_OUT2);
1171
1172         /*
1173          * send RTS pulses until we reach 115200
1174          * i hope this is really the same for act220l/act220l+
1175          */
1176         for (i = 0; i < 3; i++) {
1177                 udelay(10);
1178                 /* set RTS low for 10 us */
1179                 soutp(UART_MCR, UART_MCR_DTR|UART_MCR_OUT2);
1180                 udelay(10);
1181                 /* set RTS high for 10 us */
1182                 soutp(UART_MCR, UART_MCR_RTS|UART_MCR_DTR|UART_MCR_OUT2);
1183         }
1184
1185         /* back to normal operation */
1186         udelay(1500); /* better safe than sorry ;) */
1187
1188         /* Set DLAB 1. */
1189         soutp(UART_LCR, UART_LCR_DLAB | UART_LCR_WLEN7);
1190
1191         /* Set divisor to 1 => 115200 Baud */
1192         soutp(UART_DLM, 0);
1193         soutp(UART_DLL, 1);
1194
1195         /* Set DLAB 0, 7 Bit */
1196         /* The dongle doesn't seem to have any problems with operation at 7N1 */
1197         soutp(UART_LCR, UART_LCR_WLEN7);
1198
1199         /* enable interrupts */
1200         soutp(UART_IER, UART_IER_RDI);
1201 }
1202 #endif
1203
1204 static int init_lirc_sir(void)
1205 {
1206         int retval;
1207
1208         init_waitqueue_head(&lirc_read_queue);
1209         retval = init_port();
1210         if (retval < 0)
1211                 return retval;
1212         init_hardware();
1213         printk(KERN_INFO LIRC_DRIVER_NAME
1214                 ": Installed.\n");
1215         return 0;
1216 }
1217
1218
1219 static int __init lirc_sir_init(void)
1220 {
1221         int retval;
1222
1223         retval = init_chrdev();
1224         if (retval < 0)
1225                 return retval;
1226         retval = init_lirc_sir();
1227         if (retval) {
1228                 drop_chrdev();
1229                 return retval;
1230         }
1231         return 0;
1232 }
1233
1234 static void __exit lirc_sir_exit(void)
1235 {
1236         drop_hardware();
1237         drop_chrdev();
1238         drop_port();
1239         printk(KERN_INFO LIRC_DRIVER_NAME ": Uninstalled.\n");
1240 }
1241
1242 module_init(lirc_sir_init);
1243 module_exit(lirc_sir_exit);
1244
1245 #ifdef LIRC_SIR_TEKRAM
1246 MODULE_DESCRIPTION("Infrared receiver driver for Tekram Irmate 210");
1247 MODULE_AUTHOR("Christoph Bartelmus");
1248 #elif defined(LIRC_ON_SA1100)
1249 MODULE_DESCRIPTION("LIRC driver for StrongARM SA1100 embedded microprocessor");
1250 MODULE_AUTHOR("Christoph Bartelmus");
1251 #elif defined(LIRC_SIR_ACTISYS_ACT200L)
1252 MODULE_DESCRIPTION("LIRC driver for Actisys Act200L");
1253 MODULE_AUTHOR("Karl Bongers");
1254 #elif defined(LIRC_SIR_ACTISYS_ACT220L)
1255 MODULE_DESCRIPTION("LIRC driver for Actisys Act220L(+)");
1256 MODULE_AUTHOR("Jan Roemisch");
1257 #else
1258 MODULE_DESCRIPTION("Infrared receiver driver for SIR type serial ports");
1259 MODULE_AUTHOR("Milan Pikula");
1260 #endif
1261 MODULE_LICENSE("GPL");
1262
1263 #ifdef LIRC_ON_SA1100
1264 module_param(irq, int, S_IRUGO);
1265 MODULE_PARM_DESC(irq, "Interrupt (16)");
1266 #else
1267 module_param(io, int, S_IRUGO);
1268 MODULE_PARM_DESC(io, "I/O address base (0x3f8 or 0x2f8)");
1269
1270 module_param(irq, int, S_IRUGO);
1271 MODULE_PARM_DESC(irq, "Interrupt (4 or 3)");
1272
1273 module_param(threshold, int, S_IRUGO);
1274 MODULE_PARM_DESC(threshold, "space detection threshold (3)");
1275 #endif
1276
1277 module_param(debug, bool, S_IRUGO | S_IWUSR);
1278 MODULE_PARM_DESC(debug, "Enable debugging messages");