Commit | Line | Data |
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404f3e95 JW |
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 <asm/system.h> | |
53 | #include <linux/io.h> | |
54 | #include <asm/irq.h> | |
55 | #include <linux/fcntl.h> | |
56 | #ifdef LIRC_ON_SA1100 | |
57 | #include <asm/hardware.h> | |
58 | #ifdef CONFIG_SA1100_COLLIE | |
59 | #include <asm/arch/tc35143.h> | |
60 | #include <asm/ucb1200.h> | |
61 | #endif | |
62 | #endif | |
63 | ||
64 | #include <linux/timer.h> | |
65 | ||
66 | #include <media/lirc.h> | |
67 | #include <media/lirc_dev.h> | |
68 | ||
69 | /* SECTION: Definitions */ | |
70 | ||
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 | |
81 | ||
82 | #define TEKRAM_PW 0x10 /* Pulse select bit */ | |
83 | ||
84 | /* 10bit * 1s/115200bit in milliseconds = 87ms*/ | |
85 | #define TIME_CONST (10000000ul/115200ul) | |
86 | ||
87 | #endif | |
88 | ||
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); | |
93 | #endif | |
94 | ||
95 | /*** SA1100 ***/ | |
96 | #ifdef LIRC_ON_SA1100 | |
97 | struct sa1100_ser2_registers { | |
98 | /* HSSP control register */ | |
99 | unsigned char hscr0; | |
100 | /* UART registers */ | |
101 | unsigned char utcr0; | |
102 | unsigned char utcr1; | |
103 | unsigned char utcr2; | |
104 | unsigned char utcr3; | |
105 | unsigned char utcr4; | |
106 | unsigned char utdr; | |
107 | unsigned char utsr0; | |
108 | unsigned char utsr1; | |
109 | } sr; | |
110 | ||
111 | static int irq = IRQ_Ser2ICP; | |
112 | ||
113 | #define LIRC_ON_SA1100_TRANSMITTER_LATENCY 0 | |
114 | ||
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% */ | |
121 | ||
122 | #endif | |
123 | ||
124 | #define RBUF_LEN 1024 | |
125 | #define WBUF_LEN 1024 | |
126 | ||
127 | #define LIRC_DRIVER_NAME "lirc_sir" | |
128 | ||
129 | #define PULSE '[' | |
130 | ||
131 | #ifndef LIRC_SIR_TEKRAM | |
132 | /* 9bit * 1s/115200bit in milli seconds = 78.125ms*/ | |
133 | #define TIME_CONST (9000000ul/115200ul) | |
134 | #endif | |
135 | ||
136 | ||
137 | /* timeout for sequences in jiffies (=5/100s), must be longer than TIME_CONST */ | |
138 | #define SIR_TIMEOUT (HZ*5/100) | |
139 | ||
140 | #ifndef LIRC_ON_SA1100 | |
141 | #ifndef LIRC_IRQ | |
142 | #define LIRC_IRQ 4 | |
143 | #endif | |
144 | #ifndef LIRC_PORT | |
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 | |
150 | #else | |
151 | /* onboard sir ports are typically com3 */ | |
152 | #define LIRC_PORT 0x3e8 | |
153 | #endif | |
154 | #endif | |
155 | ||
156 | static int io = LIRC_PORT; | |
157 | static int irq = LIRC_IRQ; | |
158 | static int threshold = 3; | |
159 | #endif | |
160 | ||
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; | |
168 | ||
169 | static DECLARE_WAIT_QUEUE_HEAD(lirc_read_queue); | |
170 | ||
171 | static DEFINE_SPINLOCK(hardware_lock); | |
172 | ||
173 | static int rx_buf[RBUF_LEN]; | |
174 | static unsigned int rx_tail, rx_head; | |
175 | ||
176 | static int debug; | |
177 | #define dprintk(fmt, args...) \ | |
178 | do { \ | |
179 | if (debug) \ | |
180 | printk(KERN_DEBUG LIRC_DRIVER_NAME ": " \ | |
181 | fmt, ## args); \ | |
182 | } while (0) | |
183 | ||
184 | /* SECTION: Prototypes */ | |
185 | ||
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, | |
189 | loff_t *ppos); | |
190 | static ssize_t lirc_write(struct file *file, const char *buf, size_t n, | |
191 | loff_t *pos); | |
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); | |
196 | /* Hardware */ | |
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); | |
202 | /* Initialisation */ | |
203 | static int init_port(void); | |
204 | static void drop_port(void); | |
205 | ||
206 | #ifdef LIRC_ON_SA1100 | |
207 | static void on(void) | |
208 | { | |
209 | PPSR |= PPC_TXD2; | |
210 | } | |
211 | ||
212 | static void off(void) | |
213 | { | |
214 | PPSR &= ~PPC_TXD2; | |
215 | } | |
216 | #else | |
217 | static inline unsigned int sinp(int offset) | |
218 | { | |
219 | return inb(io + offset); | |
220 | } | |
221 | ||
222 | static inline void soutp(int offset, int value) | |
223 | { | |
224 | outb(value, io + offset); | |
225 | } | |
226 | #endif | |
227 | ||
228 | #ifndef MAX_UDELAY_MS | |
229 | #define MAX_UDELAY_US 5000 | |
230 | #else | |
231 | #define MAX_UDELAY_US (MAX_UDELAY_MS*1000) | |
232 | #endif | |
233 | ||
234 | static void safe_udelay(unsigned long usecs) | |
235 | { | |
236 | while (usecs > MAX_UDELAY_US) { | |
237 | udelay(MAX_UDELAY_US); | |
238 | usecs -= MAX_UDELAY_US; | |
239 | } | |
240 | udelay(usecs); | |
241 | } | |
242 | ||
243 | /* SECTION: Communication with user-space */ | |
244 | ||
245 | static unsigned int lirc_poll(struct file *file, poll_table *wait) | |
246 | { | |
247 | poll_wait(file, &lirc_read_queue, wait); | |
248 | if (rx_head != rx_tail) | |
249 | return POLLIN | POLLRDNORM; | |
250 | return 0; | |
251 | } | |
252 | ||
253 | static ssize_t lirc_read(struct file *file, char *buf, size_t count, | |
254 | loff_t *ppos) | |
255 | { | |
256 | int n = 0; | |
257 | int retval = 0; | |
258 | DECLARE_WAITQUEUE(wait, current); | |
259 | ||
260 | if (count % sizeof(int)) | |
261 | return -EINVAL; | |
262 | ||
263 | add_wait_queue(&lirc_read_queue, &wait); | |
264 | set_current_state(TASK_INTERRUPTIBLE); | |
265 | while (n < count) { | |
266 | if (rx_head != rx_tail) { | |
267 | if (copy_to_user((void *) buf + n, | |
268 | (void *) (rx_buf + rx_head), | |
269 | sizeof(int))) { | |
270 | retval = -EFAULT; | |
271 | break; | |
272 | } | |
273 | rx_head = (rx_head + 1) & (RBUF_LEN - 1); | |
274 | n += sizeof(int); | |
275 | } else { | |
276 | if (file->f_flags & O_NONBLOCK) { | |
277 | retval = -EAGAIN; | |
278 | break; | |
279 | } | |
280 | if (signal_pending(current)) { | |
281 | retval = -ERESTARTSYS; | |
282 | break; | |
283 | } | |
284 | schedule(); | |
285 | set_current_state(TASK_INTERRUPTIBLE); | |
286 | } | |
287 | } | |
288 | remove_wait_queue(&lirc_read_queue, &wait); | |
289 | set_current_state(TASK_RUNNING); | |
290 | return n ? n : retval; | |
291 | } | |
292 | static ssize_t lirc_write(struct file *file, const char *buf, size_t n, | |
293 | loff_t *pos) | |
294 | { | |
295 | unsigned long flags; | |
296 | int i, count; | |
297 | int *tx_buf; | |
298 | ||
299 | count = n / sizeof(int); | |
300 | if (n % sizeof(int) || count % 2 == 0) | |
301 | return -EINVAL; | |
302 | tx_buf = memdup_user(buf, n); | |
303 | if (IS_ERR(tx_buf)) | |
304 | return PTR_ERR(tx_buf); | |
305 | i = 0; | |
306 | #ifdef LIRC_ON_SA1100 | |
307 | /* disable receiver */ | |
308 | Ser2UTCR3 = 0; | |
309 | #endif | |
310 | local_irq_save(flags); | |
311 | while (1) { | |
312 | if (i >= count) | |
313 | break; | |
314 | if (tx_buf[i]) | |
315 | send_pulse(tx_buf[i]); | |
316 | i++; | |
317 | if (i >= count) | |
318 | break; | |
319 | if (tx_buf[i]) | |
320 | send_space(tx_buf[i]); | |
321 | i++; | |
322 | } | |
323 | local_irq_restore(flags); | |
324 | #ifdef LIRC_ON_SA1100 | |
325 | off(); | |
326 | udelay(1000); /* wait 1ms for IR diode to recover */ | |
327 | Ser2UTCR3 = 0; | |
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; | |
332 | #endif | |
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 | unsigned long value = 0; | |
340 | #ifdef LIRC_ON_SA1100 | |
341 | unsigned int ivalue; | |
342 | ||
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 | | |
347 | LIRC_CAN_REC_MODE2; | |
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; | |
352 | #else | |
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; | |
359 | #endif | |
360 | ||
361 | switch (cmd) { | |
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); | |
366 | break; | |
367 | ||
368 | case LIRC_SET_SEND_MODE: | |
369 | case LIRC_SET_REC_MODE: | |
370 | retval = get_user(value, (unsigned long *) arg); | |
371 | break; | |
372 | #ifdef LIRC_ON_SA1100 | |
373 | case LIRC_SET_SEND_DUTY_CYCLE: | |
374 | retval = get_user(ivalue, (unsigned int *) arg); | |
375 | if (retval) | |
376 | return retval; | |
377 | if (ivalue <= 0 || ivalue > 100) | |
378 | return -EINVAL; | |
379 | /* (ivalue/100)*(1000000/freq) */ | |
380 | duty_cycle = ivalue; | |
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; | |
387 | break; | |
388 | case LIRC_SET_SEND_CARRIER: | |
389 | retval = get_user(ivalue, (unsigned int *) arg); | |
390 | if (retval) | |
391 | return retval; | |
392 | if (ivalue > 500000 || ivalue < 20000) | |
393 | return -EINVAL; | |
394 | freq = ivalue; | |
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; | |
401 | break; | |
402 | #endif | |
403 | default: | |
404 | retval = -ENOIOCTLCMD; | |
405 | ||
406 | } | |
407 | ||
408 | if (retval) | |
409 | return retval; | |
410 | if (cmd == LIRC_SET_REC_MODE) { | |
411 | if (value != LIRC_MODE_MODE2) | |
412 | retval = -ENOSYS; | |
413 | } else if (cmd == LIRC_SET_SEND_MODE) { | |
414 | if (value != LIRC_MODE_PULSE) | |
415 | retval = -ENOSYS; | |
416 | } | |
417 | ||
418 | return retval; | |
419 | } | |
420 | ||
421 | static void add_read_queue(int flag, unsigned long val) | |
422 | { | |
423 | unsigned int new_rx_tail; | |
424 | int newval; | |
425 | ||
426 | dprintk("add flag %d with val %lu\n", flag, val); | |
427 | ||
428 | newval = val & PULSE_MASK; | |
429 | ||
430 | /* | |
431 | * statistically, pulses are ~TIME_CONST/2 too long. we could | |
432 | * maybe make this more exact, but this is good enough | |
433 | */ | |
434 | if (flag) { | |
435 | /* pulse */ | |
436 | if (newval > TIME_CONST/2) | |
437 | newval -= TIME_CONST/2; | |
438 | else /* should not ever happen */ | |
439 | newval = 1; | |
440 | newval |= PULSE_BIT; | |
441 | } else { | |
442 | newval += TIME_CONST/2; | |
443 | } | |
444 | new_rx_tail = (rx_tail + 1) & (RBUF_LEN - 1); | |
445 | if (new_rx_tail == rx_head) { | |
446 | dprintk("Buffer overrun.\n"); | |
447 | return; | |
448 | } | |
449 | rx_buf[rx_tail] = newval; | |
450 | rx_tail = new_rx_tail; | |
451 | wake_up_interruptible(&lirc_read_queue); | |
452 | } | |
453 | ||
0f9313ad | 454 | static const struct file_operations lirc_fops = { |
404f3e95 JW |
455 | .owner = THIS_MODULE, |
456 | .read = lirc_read, | |
457 | .write = lirc_write, | |
458 | .poll = lirc_poll, | |
459 | .unlocked_ioctl = lirc_ioctl, | |
460 | .open = lirc_dev_fop_open, | |
461 | .release = lirc_dev_fop_close, | |
462 | }; | |
463 | ||
464 | static int set_use_inc(void *data) | |
465 | { | |
466 | return 0; | |
467 | } | |
468 | ||
469 | static void set_use_dec(void *data) | |
470 | { | |
471 | } | |
472 | ||
473 | static struct lirc_driver driver = { | |
474 | .name = LIRC_DRIVER_NAME, | |
475 | .minor = -1, | |
476 | .code_length = 1, | |
477 | .sample_rate = 0, | |
478 | .data = NULL, | |
479 | .add_to_buf = NULL, | |
480 | .set_use_inc = set_use_inc, | |
481 | .set_use_dec = set_use_dec, | |
482 | .fops = &lirc_fops, | |
483 | .dev = NULL, | |
484 | .owner = THIS_MODULE, | |
485 | }; | |
486 | ||
487 | ||
488 | static int init_chrdev(void) | |
489 | { | |
490 | driver.minor = lirc_register_driver(&driver); | |
491 | if (driver.minor < 0) { | |
492 | printk(KERN_ERR LIRC_DRIVER_NAME ": init_chrdev() failed.\n"); | |
493 | return -EIO; | |
494 | } | |
495 | return 0; | |
496 | } | |
497 | ||
498 | static void drop_chrdev(void) | |
499 | { | |
500 | lirc_unregister_driver(driver.minor); | |
501 | } | |
502 | ||
503 | /* SECTION: Hardware */ | |
504 | static long delta(struct timeval *tv1, struct timeval *tv2) | |
505 | { | |
506 | unsigned long deltv; | |
507 | ||
508 | deltv = tv2->tv_sec - tv1->tv_sec; | |
509 | if (deltv > 15) | |
510 | deltv = 0xFFFFFF; | |
511 | else | |
512 | deltv = deltv*1000000 + | |
513 | tv2->tv_usec - | |
514 | tv1->tv_usec; | |
515 | return deltv; | |
516 | } | |
517 | ||
518 | static void sir_timeout(unsigned long data) | |
519 | { | |
520 | /* | |
521 | * if last received signal was a pulse, but receiving stopped | |
522 | * within the 9 bit frame, we need to finish this pulse and | |
523 | * simulate a signal change to from pulse to space. Otherwise | |
524 | * upper layers will receive two sequences next time. | |
525 | */ | |
526 | ||
527 | unsigned long flags; | |
528 | unsigned long pulse_end; | |
529 | ||
530 | /* avoid interference with interrupt */ | |
531 | spin_lock_irqsave(&timer_lock, flags); | |
532 | if (last_value) { | |
533 | #ifndef LIRC_ON_SA1100 | |
534 | /* clear unread bits in UART and restart */ | |
535 | outb(UART_FCR_CLEAR_RCVR, io + UART_FCR); | |
536 | #endif | |
537 | /* determine 'virtual' pulse end: */ | |
538 | pulse_end = delta(&last_tv, &last_intr_tv); | |
539 | dprintk("timeout add %d for %lu usec\n", last_value, pulse_end); | |
540 | add_read_queue(last_value, pulse_end); | |
541 | last_value = 0; | |
542 | last_tv = last_intr_tv; | |
543 | } | |
544 | spin_unlock_irqrestore(&timer_lock, flags); | |
545 | } | |
546 | ||
547 | static irqreturn_t sir_interrupt(int irq, void *dev_id) | |
548 | { | |
549 | unsigned char data; | |
550 | struct timeval curr_tv; | |
551 | static unsigned long deltv; | |
552 | #ifdef LIRC_ON_SA1100 | |
553 | int status; | |
554 | static int n; | |
555 | ||
556 | status = Ser2UTSR0; | |
557 | /* | |
558 | * Deal with any receive errors first. The bytes in error may be | |
559 | * the only bytes in the receive FIFO, so we do this first. | |
560 | */ | |
561 | while (status & UTSR0_EIF) { | |
562 | int bstat; | |
563 | ||
564 | if (debug) { | |
565 | dprintk("EIF\n"); | |
566 | bstat = Ser2UTSR1; | |
567 | ||
568 | if (bstat & UTSR1_FRE) | |
569 | dprintk("frame error\n"); | |
570 | if (bstat & UTSR1_ROR) | |
571 | dprintk("receive fifo overrun\n"); | |
572 | if (bstat & UTSR1_PRE) | |
573 | dprintk("parity error\n"); | |
574 | } | |
575 | ||
576 | bstat = Ser2UTDR; | |
577 | n++; | |
578 | status = Ser2UTSR0; | |
579 | } | |
580 | ||
581 | if (status & (UTSR0_RFS | UTSR0_RID)) { | |
582 | do_gettimeofday(&curr_tv); | |
583 | deltv = delta(&last_tv, &curr_tv); | |
584 | do { | |
585 | data = Ser2UTDR; | |
586 | dprintk("%d data: %u\n", n, (unsigned int) data); | |
587 | n++; | |
588 | } while (status & UTSR0_RID && /* do not empty fifo in order to | |
589 | * get UTSR0_RID in any case */ | |
590 | Ser2UTSR1 & UTSR1_RNE); /* data ready */ | |
591 | ||
592 | if (status&UTSR0_RID) { | |
593 | add_read_queue(0 , deltv - n * TIME_CONST); /*space*/ | |
594 | add_read_queue(1, n * TIME_CONST); /*pulse*/ | |
595 | n = 0; | |
596 | last_tv = curr_tv; | |
597 | } | |
598 | } | |
599 | ||
600 | if (status & UTSR0_TFS) | |
601 | printk(KERN_ERR "transmit fifo not full, shouldn't happen\n"); | |
602 | ||
603 | /* We must clear certain bits. */ | |
604 | status &= (UTSR0_RID | UTSR0_RBB | UTSR0_REB); | |
605 | if (status) | |
606 | Ser2UTSR0 = status; | |
607 | #else | |
608 | unsigned long deltintrtv; | |
609 | unsigned long flags; | |
610 | int iir, lsr; | |
611 | ||
612 | while ((iir = inb(io + UART_IIR) & UART_IIR_ID)) { | |
613 | switch (iir&UART_IIR_ID) { /* FIXME toto treba preriedit */ | |
614 | case UART_IIR_MSI: | |
615 | (void) inb(io + UART_MSR); | |
616 | break; | |
617 | case UART_IIR_RLSI: | |
618 | (void) inb(io + UART_LSR); | |
619 | break; | |
620 | case UART_IIR_THRI: | |
621 | #if 0 | |
622 | if (lsr & UART_LSR_THRE) /* FIFO is empty */ | |
623 | outb(data, io + UART_TX) | |
624 | #endif | |
625 | break; | |
626 | case UART_IIR_RDI: | |
627 | /* avoid interference with timer */ | |
628 | spin_lock_irqsave(&timer_lock, flags); | |
629 | do { | |
630 | del_timer(&timerlist); | |
631 | data = inb(io + UART_RX); | |
632 | do_gettimeofday(&curr_tv); | |
633 | deltv = delta(&last_tv, &curr_tv); | |
634 | deltintrtv = delta(&last_intr_tv, &curr_tv); | |
635 | dprintk("t %lu, d %d\n", deltintrtv, (int)data); | |
636 | /* | |
637 | * if nothing came in last X cycles, | |
638 | * it was gap | |
639 | */ | |
640 | if (deltintrtv > TIME_CONST * threshold) { | |
641 | if (last_value) { | |
642 | dprintk("GAP\n"); | |
643 | /* simulate signal change */ | |
644 | add_read_queue(last_value, | |
645 | deltv - | |
646 | deltintrtv); | |
647 | last_value = 0; | |
648 | last_tv.tv_sec = | |
649 | last_intr_tv.tv_sec; | |
650 | last_tv.tv_usec = | |
651 | last_intr_tv.tv_usec; | |
652 | deltv = deltintrtv; | |
653 | } | |
654 | } | |
655 | data = 1; | |
656 | if (data ^ last_value) { | |
657 | /* | |
658 | * deltintrtv > 2*TIME_CONST, remember? | |
659 | * the other case is timeout | |
660 | */ | |
661 | add_read_queue(last_value, | |
662 | deltv-TIME_CONST); | |
663 | last_value = data; | |
664 | last_tv = curr_tv; | |
665 | if (last_tv.tv_usec >= TIME_CONST) { | |
666 | last_tv.tv_usec -= TIME_CONST; | |
667 | } else { | |
668 | last_tv.tv_sec--; | |
669 | last_tv.tv_usec += 1000000 - | |
670 | TIME_CONST; | |
671 | } | |
672 | } | |
673 | last_intr_tv = curr_tv; | |
674 | if (data) { | |
675 | /* | |
676 | * start timer for end of | |
677 | * sequence detection | |
678 | */ | |
679 | timerlist.expires = jiffies + | |
680 | SIR_TIMEOUT; | |
681 | add_timer(&timerlist); | |
682 | } | |
683 | ||
684 | lsr = inb(io + UART_LSR); | |
685 | } while (lsr & UART_LSR_DR); /* data ready */ | |
686 | spin_unlock_irqrestore(&timer_lock, flags); | |
687 | break; | |
688 | default: | |
689 | break; | |
690 | } | |
691 | } | |
692 | #endif | |
693 | return IRQ_RETVAL(IRQ_HANDLED); | |
694 | } | |
695 | ||
696 | #ifdef LIRC_ON_SA1100 | |
697 | static void send_pulse(unsigned long length) | |
698 | { | |
699 | unsigned long k, delay; | |
700 | int flag; | |
701 | ||
702 | if (length == 0) | |
703 | return; | |
704 | /* | |
705 | * this won't give us the carrier frequency we really want | |
706 | * due to integer arithmetic, but we can accept this inaccuracy | |
707 | */ | |
708 | ||
709 | for (k = flag = 0; k < length; k += delay, flag = !flag) { | |
710 | if (flag) { | |
711 | off(); | |
712 | delay = space_width; | |
713 | } else { | |
714 | on(); | |
715 | delay = pulse_width; | |
716 | } | |
717 | safe_udelay(delay); | |
718 | } | |
719 | off(); | |
720 | } | |
721 | ||
722 | static void send_space(unsigned long length) | |
723 | { | |
724 | if (length == 0) | |
725 | return; | |
726 | off(); | |
727 | safe_udelay(length); | |
728 | } | |
729 | #else | |
730 | static void send_space(unsigned long len) | |
731 | { | |
732 | safe_udelay(len); | |
733 | } | |
734 | ||
735 | static void send_pulse(unsigned long len) | |
736 | { | |
737 | long bytes_out = len / TIME_CONST; | |
738 | long time_left; | |
739 | ||
740 | time_left = (long)len - (long)bytes_out * (long)TIME_CONST; | |
741 | if (bytes_out == 0) { | |
742 | bytes_out++; | |
743 | time_left = 0; | |
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 | #if 0 | |
752 | if (time_left > 0) | |
753 | safe_udelay(time_left); | |
754 | #endif | |
755 | } | |
756 | #endif | |
757 | ||
758 | #ifdef CONFIG_SA1100_COLLIE | |
759 | static int sa1100_irda_set_power_collie(int state) | |
760 | { | |
761 | if (state) { | |
762 | /* | |
763 | * 0 - off | |
764 | * 1 - short range, lowest power | |
765 | * 2 - medium range, medium power | |
766 | * 3 - maximum range, high power | |
767 | */ | |
768 | ucb1200_set_io_direction(TC35143_GPIO_IR_ON, | |
769 | TC35143_IODIR_OUTPUT); | |
770 | ucb1200_set_io(TC35143_GPIO_IR_ON, TC35143_IODAT_LOW); | |
771 | udelay(100); | |
772 | } else { | |
773 | /* OFF */ | |
774 | ucb1200_set_io_direction(TC35143_GPIO_IR_ON, | |
775 | TC35143_IODIR_OUTPUT); | |
776 | ucb1200_set_io(TC35143_GPIO_IR_ON, TC35143_IODAT_HIGH); | |
777 | } | |
778 | return 0; | |
779 | } | |
780 | #endif | |
781 | ||
782 | static int init_hardware(void) | |
783 | { | |
784 | unsigned long flags; | |
785 | ||
786 | spin_lock_irqsave(&hardware_lock, flags); | |
787 | /* reset UART */ | |
788 | #ifdef LIRC_ON_SA1100 | |
789 | #ifdef CONFIG_SA1100_BITSY | |
790 | if (machine_is_bitsy()) { | |
791 | printk(KERN_INFO "Power on IR module\n"); | |
792 | set_bitsy_egpio(EGPIO_BITSY_IR_ON); | |
793 | } | |
794 | #endif | |
795 | #ifdef CONFIG_SA1100_COLLIE | |
796 | sa1100_irda_set_power_collie(3); /* power on */ | |
797 | #endif | |
798 | sr.hscr0 = Ser2HSCR0; | |
799 | ||
800 | sr.utcr0 = Ser2UTCR0; | |
801 | sr.utcr1 = Ser2UTCR1; | |
802 | sr.utcr2 = Ser2UTCR2; | |
803 | sr.utcr3 = Ser2UTCR3; | |
804 | sr.utcr4 = Ser2UTCR4; | |
805 | ||
806 | sr.utdr = Ser2UTDR; | |
807 | sr.utsr0 = Ser2UTSR0; | |
808 | sr.utsr1 = Ser2UTSR1; | |
809 | ||
810 | /* configure GPIO */ | |
811 | /* output */ | |
812 | PPDR |= PPC_TXD2; | |
813 | PSDR |= PPC_TXD2; | |
814 | /* set output to 0 */ | |
815 | off(); | |
816 | ||
817 | /* Enable HP-SIR modulation, and ensure that the port is disabled. */ | |
818 | Ser2UTCR3 = 0; | |
819 | Ser2HSCR0 = sr.hscr0 & (~HSCR0_HSSP); | |
820 | ||
821 | /* clear status register to prevent unwanted interrupts */ | |
822 | Ser2UTSR0 &= (UTSR0_RID | UTSR0_RBB | UTSR0_REB); | |
823 | ||
824 | /* 7N1 */ | |
825 | Ser2UTCR0 = UTCR0_1StpBit|UTCR0_7BitData; | |
826 | /* 115200 */ | |
827 | Ser2UTCR1 = 0; | |
828 | Ser2UTCR2 = 1; | |
829 | /* use HPSIR, 1.6 usec pulses */ | |
830 | Ser2UTCR4 = UTCR4_HPSIR|UTCR4_Z1_6us; | |
831 | ||
832 | /* enable receiver, receive fifo interrupt */ | |
833 | Ser2UTCR3 = UTCR3_RXE|UTCR3_RIE; | |
834 | ||
835 | /* clear status register to prevent unwanted interrupts */ | |
836 | Ser2UTSR0 &= (UTSR0_RID | UTSR0_RBB | UTSR0_REB); | |
837 | ||
838 | #elif defined(LIRC_SIR_TEKRAM) | |
839 | /* disable FIFO */ | |
840 | soutp(UART_FCR, | |
841 | UART_FCR_CLEAR_RCVR| | |
842 | UART_FCR_CLEAR_XMIT| | |
843 | UART_FCR_TRIGGER_1); | |
844 | ||
845 | /* Set DLAB 0. */ | |
846 | soutp(UART_LCR, sinp(UART_LCR) & (~UART_LCR_DLAB)); | |
847 | ||
848 | /* First of all, disable all interrupts */ | |
849 | soutp(UART_IER, sinp(UART_IER) & | |
850 | (~(UART_IER_MSI|UART_IER_RLSI|UART_IER_THRI|UART_IER_RDI))); | |
851 | ||
852 | /* Set DLAB 1. */ | |
853 | soutp(UART_LCR, sinp(UART_LCR) | UART_LCR_DLAB); | |
854 | ||
855 | /* Set divisor to 12 => 9600 Baud */ | |
856 | soutp(UART_DLM, 0); | |
857 | soutp(UART_DLL, 12); | |
858 | ||
859 | /* Set DLAB 0. */ | |
860 | soutp(UART_LCR, sinp(UART_LCR) & (~UART_LCR_DLAB)); | |
861 | ||
862 | /* power supply */ | |
863 | soutp(UART_MCR, UART_MCR_RTS|UART_MCR_DTR|UART_MCR_OUT2); | |
864 | safe_udelay(50*1000); | |
865 | ||
866 | /* -DTR low -> reset PIC */ | |
867 | soutp(UART_MCR, UART_MCR_RTS|UART_MCR_OUT2); | |
868 | udelay(1*1000); | |
869 | ||
870 | soutp(UART_MCR, UART_MCR_RTS|UART_MCR_DTR|UART_MCR_OUT2); | |
871 | udelay(100); | |
872 | ||
873 | ||
874 | /* -RTS low -> send control byte */ | |
875 | soutp(UART_MCR, UART_MCR_DTR|UART_MCR_OUT2); | |
876 | udelay(7); | |
877 | soutp(UART_TX, TEKRAM_115200|TEKRAM_PW); | |
878 | ||
879 | /* one byte takes ~1042 usec to transmit at 9600,8N1 */ | |
880 | udelay(1500); | |
881 | ||
882 | /* back to normal operation */ | |
883 | soutp(UART_MCR, UART_MCR_RTS|UART_MCR_DTR|UART_MCR_OUT2); | |
884 | udelay(50); | |
885 | ||
886 | udelay(1500); | |
887 | ||
888 | /* read previous control byte */ | |
889 | printk(KERN_INFO LIRC_DRIVER_NAME | |
890 | ": 0x%02x\n", sinp(UART_RX)); | |
891 | ||
892 | /* Set DLAB 1. */ | |
893 | soutp(UART_LCR, sinp(UART_LCR) | UART_LCR_DLAB); | |
894 | ||
895 | /* Set divisor to 1 => 115200 Baud */ | |
896 | soutp(UART_DLM, 0); | |
897 | soutp(UART_DLL, 1); | |
898 | ||
899 | /* Set DLAB 0, 8 Bit */ | |
900 | soutp(UART_LCR, UART_LCR_WLEN8); | |
901 | /* enable interrupts */ | |
902 | soutp(UART_IER, sinp(UART_IER)|UART_IER_RDI); | |
903 | #else | |
904 | outb(0, io + UART_MCR); | |
905 | outb(0, io + UART_IER); | |
906 | /* init UART */ | |
907 | /* set DLAB, speed = 115200 */ | |
908 | outb(UART_LCR_DLAB | UART_LCR_WLEN7, io + UART_LCR); | |
909 | outb(1, io + UART_DLL); outb(0, io + UART_DLM); | |
910 | /* 7N1+start = 9 bits at 115200 ~ 3 bits at 44000 */ | |
911 | outb(UART_LCR_WLEN7, io + UART_LCR); | |
912 | /* FIFO operation */ | |
913 | outb(UART_FCR_ENABLE_FIFO, io + UART_FCR); | |
914 | /* interrupts */ | |
915 | /* outb(UART_IER_RLSI|UART_IER_RDI|UART_IER_THRI, io + UART_IER); */ | |
916 | outb(UART_IER_RDI, io + UART_IER); | |
917 | /* turn on UART */ | |
918 | outb(UART_MCR_DTR|UART_MCR_RTS|UART_MCR_OUT2, io + UART_MCR); | |
919 | #ifdef LIRC_SIR_ACTISYS_ACT200L | |
920 | init_act200(); | |
921 | #elif defined(LIRC_SIR_ACTISYS_ACT220L) | |
922 | init_act220(); | |
923 | #endif | |
924 | #endif | |
925 | spin_unlock_irqrestore(&hardware_lock, flags); | |
926 | return 0; | |
927 | } | |
928 | ||
929 | static void drop_hardware(void) | |
930 | { | |
931 | unsigned long flags; | |
932 | ||
933 | spin_lock_irqsave(&hardware_lock, flags); | |
934 | ||
935 | #ifdef LIRC_ON_SA1100 | |
936 | Ser2UTCR3 = 0; | |
937 | ||
938 | Ser2UTCR0 = sr.utcr0; | |
939 | Ser2UTCR1 = sr.utcr1; | |
940 | Ser2UTCR2 = sr.utcr2; | |
941 | Ser2UTCR4 = sr.utcr4; | |
942 | Ser2UTCR3 = sr.utcr3; | |
943 | ||
944 | Ser2HSCR0 = sr.hscr0; | |
945 | #ifdef CONFIG_SA1100_BITSY | |
946 | if (machine_is_bitsy()) | |
947 | clr_bitsy_egpio(EGPIO_BITSY_IR_ON); | |
948 | #endif | |
949 | #ifdef CONFIG_SA1100_COLLIE | |
950 | sa1100_irda_set_power_collie(0); /* power off */ | |
951 | #endif | |
952 | #else | |
953 | /* turn off interrupts */ | |
954 | outb(0, io + UART_IER); | |
955 | #endif | |
956 | spin_unlock_irqrestore(&hardware_lock, flags); | |
957 | } | |
958 | ||
959 | /* SECTION: Initialisation */ | |
960 | ||
961 | static int init_port(void) | |
962 | { | |
963 | int retval; | |
964 | ||
965 | /* get I/O port access and IRQ line */ | |
966 | #ifndef LIRC_ON_SA1100 | |
967 | if (request_region(io, 8, LIRC_DRIVER_NAME) == NULL) { | |
968 | printk(KERN_ERR LIRC_DRIVER_NAME | |
969 | ": i/o port 0x%.4x already in use.\n", io); | |
970 | return -EBUSY; | |
971 | } | |
972 | #endif | |
973 | retval = request_irq(irq, sir_interrupt, IRQF_DISABLED, | |
974 | LIRC_DRIVER_NAME, NULL); | |
975 | if (retval < 0) { | |
976 | # ifndef LIRC_ON_SA1100 | |
977 | release_region(io, 8); | |
978 | # endif | |
979 | printk(KERN_ERR LIRC_DRIVER_NAME | |
980 | ": IRQ %d already in use.\n", | |
981 | irq); | |
982 | return retval; | |
983 | } | |
984 | #ifndef LIRC_ON_SA1100 | |
985 | printk(KERN_INFO LIRC_DRIVER_NAME | |
986 | ": I/O port 0x%.4x, IRQ %d.\n", | |
987 | io, irq); | |
988 | #endif | |
989 | ||
990 | init_timer(&timerlist); | |
991 | timerlist.function = sir_timeout; | |
992 | timerlist.data = 0xabadcafe; | |
993 | ||
994 | return 0; | |
995 | } | |
996 | ||
997 | static void drop_port(void) | |
998 | { | |
999 | free_irq(irq, NULL); | |
1000 | del_timer_sync(&timerlist); | |
1001 | #ifndef LIRC_ON_SA1100 | |
1002 | release_region(io, 8); | |
1003 | #endif | |
1004 | } | |
1005 | ||
1006 | #ifdef LIRC_SIR_ACTISYS_ACT200L | |
1007 | /* Crystal/Cirrus CS8130 IR transceiver, used in Actisys Act200L dongle */ | |
1008 | /* some code borrowed from Linux IRDA driver */ | |
1009 | ||
1010 | /* Register 0: Control register #1 */ | |
1011 | #define ACT200L_REG0 0x00 | |
1012 | #define ACT200L_TXEN 0x01 /* Enable transmitter */ | |
1013 | #define ACT200L_RXEN 0x02 /* Enable receiver */ | |
1014 | #define ACT200L_ECHO 0x08 /* Echo control chars */ | |
1015 | ||
1016 | /* Register 1: Control register #2 */ | |
1017 | #define ACT200L_REG1 0x10 | |
1018 | #define ACT200L_LODB 0x01 /* Load new baud rate count value */ | |
1019 | #define ACT200L_WIDE 0x04 /* Expand the maximum allowable pulse */ | |
1020 | ||
1021 | /* Register 3: Transmit mode register #2 */ | |
1022 | #define ACT200L_REG3 0x30 | |
1023 | #define ACT200L_B0 0x01 /* DataBits, 0=6, 1=7, 2=8, 3=9(8P) */ | |
1024 | #define ACT200L_B1 0x02 /* DataBits, 0=6, 1=7, 2=8, 3=9(8P) */ | |
1025 | #define ACT200L_CHSY 0x04 /* StartBit Synced 0=bittime, 1=startbit */ | |
1026 | ||
1027 | /* Register 4: Output Power register */ | |
1028 | #define ACT200L_REG4 0x40 | |
1029 | #define ACT200L_OP0 0x01 /* Enable LED1C output */ | |
1030 | #define ACT200L_OP1 0x02 /* Enable LED2C output */ | |
1031 | #define ACT200L_BLKR 0x04 | |
1032 | ||
1033 | /* Register 5: Receive Mode register */ | |
1034 | #define ACT200L_REG5 0x50 | |
1035 | #define ACT200L_RWIDL 0x01 /* fixed 1.6us pulse mode */ | |
1036 | /*.. other various IRDA bit modes, and TV remote modes..*/ | |
1037 | ||
1038 | /* Register 6: Receive Sensitivity register #1 */ | |
1039 | #define ACT200L_REG6 0x60 | |
1040 | #define ACT200L_RS0 0x01 /* receive threshold bit 0 */ | |
1041 | #define ACT200L_RS1 0x02 /* receive threshold bit 1 */ | |
1042 | ||
1043 | /* Register 7: Receive Sensitivity register #2 */ | |
1044 | #define ACT200L_REG7 0x70 | |
1045 | #define ACT200L_ENPOS 0x04 /* Ignore the falling edge */ | |
1046 | ||
1047 | /* Register 8,9: Baud Rate Divider register #1,#2 */ | |
1048 | #define ACT200L_REG8 0x80 | |
1049 | #define ACT200L_REG9 0x90 | |
1050 | ||
1051 | #define ACT200L_2400 0x5f | |
1052 | #define ACT200L_9600 0x17 | |
1053 | #define ACT200L_19200 0x0b | |
1054 | #define ACT200L_38400 0x05 | |
1055 | #define ACT200L_57600 0x03 | |
1056 | #define ACT200L_115200 0x01 | |
1057 | ||
1058 | /* Register 13: Control register #3 */ | |
1059 | #define ACT200L_REG13 0xd0 | |
1060 | #define ACT200L_SHDW 0x01 /* Enable access to shadow registers */ | |
1061 | ||
1062 | /* Register 15: Status register */ | |
1063 | #define ACT200L_REG15 0xf0 | |
1064 | ||
1065 | /* Register 21: Control register #4 */ | |
1066 | #define ACT200L_REG21 0x50 | |
1067 | #define ACT200L_EXCK 0x02 /* Disable clock output driver */ | |
1068 | #define ACT200L_OSCL 0x04 /* oscillator in low power, medium accuracy mode */ | |
1069 | ||
1070 | static void init_act200(void) | |
1071 | { | |
1072 | int i; | |
1073 | __u8 control[] = { | |
1074 | ACT200L_REG15, | |
1075 | ACT200L_REG13 | ACT200L_SHDW, | |
1076 | ACT200L_REG21 | ACT200L_EXCK | ACT200L_OSCL, | |
1077 | ACT200L_REG13, | |
1078 | ACT200L_REG7 | ACT200L_ENPOS, | |
1079 | ACT200L_REG6 | ACT200L_RS0 | ACT200L_RS1, | |
1080 | ACT200L_REG5 | ACT200L_RWIDL, | |
1081 | ACT200L_REG4 | ACT200L_OP0 | ACT200L_OP1 | ACT200L_BLKR, | |
1082 | ACT200L_REG3 | ACT200L_B0, | |
1083 | ACT200L_REG0 | ACT200L_TXEN | ACT200L_RXEN, | |
1084 | ACT200L_REG8 | (ACT200L_115200 & 0x0f), | |
1085 | ACT200L_REG9 | ((ACT200L_115200 >> 4) & 0x0f), | |
1086 | ACT200L_REG1 | ACT200L_LODB | ACT200L_WIDE | |
1087 | }; | |
1088 | ||
1089 | /* Set DLAB 1. */ | |
1090 | soutp(UART_LCR, UART_LCR_DLAB | UART_LCR_WLEN8); | |
1091 | ||
1092 | /* Set divisor to 12 => 9600 Baud */ | |
1093 | soutp(UART_DLM, 0); | |
1094 | soutp(UART_DLL, 12); | |
1095 | ||
1096 | /* Set DLAB 0. */ | |
1097 | soutp(UART_LCR, UART_LCR_WLEN8); | |
1098 | /* Set divisor to 12 => 9600 Baud */ | |
1099 | ||
1100 | /* power supply */ | |
1101 | soutp(UART_MCR, UART_MCR_RTS|UART_MCR_DTR|UART_MCR_OUT2); | |
1102 | for (i = 0; i < 50; i++) | |
1103 | safe_udelay(1000); | |
1104 | ||
1105 | /* Reset the dongle : set RTS low for 25 ms */ | |
1106 | soutp(UART_MCR, UART_MCR_DTR|UART_MCR_OUT2); | |
1107 | for (i = 0; i < 25; i++) | |
1108 | udelay(1000); | |
1109 | ||
1110 | soutp(UART_MCR, UART_MCR_RTS|UART_MCR_DTR|UART_MCR_OUT2); | |
1111 | udelay(100); | |
1112 | ||
1113 | /* Clear DTR and set RTS to enter command mode */ | |
1114 | soutp(UART_MCR, UART_MCR_RTS|UART_MCR_OUT2); | |
1115 | udelay(7); | |
1116 | ||
1117 | /* send out the control register settings for 115K 7N1 SIR operation */ | |
1118 | for (i = 0; i < sizeof(control); i++) { | |
1119 | soutp(UART_TX, control[i]); | |
1120 | /* one byte takes ~1042 usec to transmit at 9600,8N1 */ | |
1121 | udelay(1500); | |
1122 | } | |
1123 | ||
1124 | /* back to normal operation */ | |
1125 | soutp(UART_MCR, UART_MCR_RTS|UART_MCR_DTR|UART_MCR_OUT2); | |
1126 | udelay(50); | |
1127 | ||
1128 | udelay(1500); | |
1129 | soutp(UART_LCR, sinp(UART_LCR) | UART_LCR_DLAB); | |
1130 | ||
1131 | /* Set DLAB 1. */ | |
1132 | soutp(UART_LCR, UART_LCR_DLAB | UART_LCR_WLEN7); | |
1133 | ||
1134 | /* Set divisor to 1 => 115200 Baud */ | |
1135 | soutp(UART_DLM, 0); | |
1136 | soutp(UART_DLL, 1); | |
1137 | ||
1138 | /* Set DLAB 0. */ | |
1139 | soutp(UART_LCR, sinp(UART_LCR) & (~UART_LCR_DLAB)); | |
1140 | ||
1141 | /* Set DLAB 0, 7 Bit */ | |
1142 | soutp(UART_LCR, UART_LCR_WLEN7); | |
1143 | ||
1144 | /* enable interrupts */ | |
1145 | soutp(UART_IER, sinp(UART_IER)|UART_IER_RDI); | |
1146 | } | |
1147 | #endif | |
1148 | ||
1149 | #ifdef LIRC_SIR_ACTISYS_ACT220L | |
1150 | /* | |
1151 | * Derived from linux IrDA driver (net/irda/actisys.c) | |
1152 | * Drop me a mail for any kind of comment: maxx@spaceboyz.net | |
1153 | */ | |
1154 | ||
1155 | void init_act220(void) | |
1156 | { | |
1157 | int i; | |
1158 | ||
1159 | /* DLAB 1 */ | |
1160 | soutp(UART_LCR, UART_LCR_DLAB|UART_LCR_WLEN7); | |
1161 | ||
1162 | /* 9600 baud */ | |
1163 | soutp(UART_DLM, 0); | |
1164 | soutp(UART_DLL, 12); | |
1165 | ||
1166 | /* DLAB 0 */ | |
1167 | soutp(UART_LCR, UART_LCR_WLEN7); | |
1168 | ||
1169 | /* reset the dongle, set DTR low for 10us */ | |
1170 | soutp(UART_MCR, UART_MCR_RTS|UART_MCR_OUT2); | |
1171 | udelay(10); | |
1172 | ||
1173 | /* back to normal (still 9600) */ | |
1174 | soutp(UART_MCR, UART_MCR_DTR|UART_MCR_RTS|UART_MCR_OUT2); | |
1175 | ||
1176 | /* | |
1177 | * send RTS pulses until we reach 115200 | |
1178 | * i hope this is really the same for act220l/act220l+ | |
1179 | */ | |
1180 | for (i = 0; i < 3; i++) { | |
1181 | udelay(10); | |
1182 | /* set RTS low for 10 us */ | |
1183 | soutp(UART_MCR, UART_MCR_DTR|UART_MCR_OUT2); | |
1184 | udelay(10); | |
1185 | /* set RTS high for 10 us */ | |
1186 | soutp(UART_MCR, UART_MCR_RTS|UART_MCR_DTR|UART_MCR_OUT2); | |
1187 | } | |
1188 | ||
1189 | /* back to normal operation */ | |
1190 | udelay(1500); /* better safe than sorry ;) */ | |
1191 | ||
1192 | /* Set DLAB 1. */ | |
1193 | soutp(UART_LCR, UART_LCR_DLAB | UART_LCR_WLEN7); | |
1194 | ||
1195 | /* Set divisor to 1 => 115200 Baud */ | |
1196 | soutp(UART_DLM, 0); | |
1197 | soutp(UART_DLL, 1); | |
1198 | ||
1199 | /* Set DLAB 0, 7 Bit */ | |
1200 | /* The dongle doesn't seem to have any problems with operation at 7N1 */ | |
1201 | soutp(UART_LCR, UART_LCR_WLEN7); | |
1202 | ||
1203 | /* enable interrupts */ | |
1204 | soutp(UART_IER, UART_IER_RDI); | |
1205 | } | |
1206 | #endif | |
1207 | ||
1208 | static int init_lirc_sir(void) | |
1209 | { | |
1210 | int retval; | |
1211 | ||
1212 | init_waitqueue_head(&lirc_read_queue); | |
1213 | retval = init_port(); | |
1214 | if (retval < 0) | |
1215 | return retval; | |
1216 | init_hardware(); | |
1217 | printk(KERN_INFO LIRC_DRIVER_NAME | |
1218 | ": Installed.\n"); | |
1219 | return 0; | |
1220 | } | |
1221 | ||
1222 | ||
1223 | static int __init lirc_sir_init(void) | |
1224 | { | |
1225 | int retval; | |
1226 | ||
1227 | retval = init_chrdev(); | |
1228 | if (retval < 0) | |
1229 | return retval; | |
1230 | retval = init_lirc_sir(); | |
1231 | if (retval) { | |
1232 | drop_chrdev(); | |
1233 | return retval; | |
1234 | } | |
1235 | return 0; | |
1236 | } | |
1237 | ||
1238 | static void __exit lirc_sir_exit(void) | |
1239 | { | |
1240 | drop_hardware(); | |
1241 | drop_chrdev(); | |
1242 | drop_port(); | |
1243 | printk(KERN_INFO LIRC_DRIVER_NAME ": Uninstalled.\n"); | |
1244 | } | |
1245 | ||
1246 | module_init(lirc_sir_init); | |
1247 | module_exit(lirc_sir_exit); | |
1248 | ||
1249 | #ifdef LIRC_SIR_TEKRAM | |
1250 | MODULE_DESCRIPTION("Infrared receiver driver for Tekram Irmate 210"); | |
1251 | MODULE_AUTHOR("Christoph Bartelmus"); | |
1252 | #elif defined(LIRC_ON_SA1100) | |
1253 | MODULE_DESCRIPTION("LIRC driver for StrongARM SA1100 embedded microprocessor"); | |
1254 | MODULE_AUTHOR("Christoph Bartelmus"); | |
1255 | #elif defined(LIRC_SIR_ACTISYS_ACT200L) | |
1256 | MODULE_DESCRIPTION("LIRC driver for Actisys Act200L"); | |
1257 | MODULE_AUTHOR("Karl Bongers"); | |
1258 | #elif defined(LIRC_SIR_ACTISYS_ACT220L) | |
1259 | MODULE_DESCRIPTION("LIRC driver for Actisys Act220L(+)"); | |
1260 | MODULE_AUTHOR("Jan Roemisch"); | |
1261 | #else | |
1262 | MODULE_DESCRIPTION("Infrared receiver driver for SIR type serial ports"); | |
1263 | MODULE_AUTHOR("Milan Pikula"); | |
1264 | #endif | |
1265 | MODULE_LICENSE("GPL"); | |
1266 | ||
1267 | #ifdef LIRC_ON_SA1100 | |
1268 | module_param(irq, int, S_IRUGO); | |
1269 | MODULE_PARM_DESC(irq, "Interrupt (16)"); | |
1270 | #else | |
1271 | module_param(io, int, S_IRUGO); | |
1272 | MODULE_PARM_DESC(io, "I/O address base (0x3f8 or 0x2f8)"); | |
1273 | ||
1274 | module_param(irq, int, S_IRUGO); | |
1275 | MODULE_PARM_DESC(irq, "Interrupt (4 or 3)"); | |
1276 | ||
1277 | module_param(threshold, int, S_IRUGO); | |
1278 | MODULE_PARM_DESC(threshold, "space detection threshold (3)"); | |
1279 | #endif | |
1280 | ||
1281 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
1282 | MODULE_PARM_DESC(debug, "Enable debugging messages"); |