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Commit 812738e11158e9b92c4f0e9278de48377cfa3cc8

Authored by Juan J. Garcia de Soria
Committed by Mauro Carvalho Chehab
1 parent 2ccb24ff3b
Exists in master and in 7 other branches imx_3.0.35_4.1.0, imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga, smarc-l5.0.0_1.0.0-ga

[media] lirc: remove staging lirc_it87 and lirc_ite8709 drivers 

Remove older drivers lirc_it87 and lirc_ite8709 from the LIRC staging area,
since they're now superceded by ite-cir.

Signed-off-by: Juan J. Garcia de Soria <skandalfo@gmail.com>
Tested-by: Stephan Raue <stephan@openelec.tv>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Showing 5 changed files with 0 additions and 1699 deletions Side-by-side Diff

drivers/staging/lirc/Kconfig
Diff comments   View file @ 812738e
... ... @@ -32,18 +32,6 @@
32 32  
33 33 Current generation iMON devices use the input layer imon driver.
34 34  
35   -config LIRC_IT87
36   - tristate "ITE IT87XX CIR Port Receiver"
37   - depends on LIRC && PNP
38   - help
39   - Driver for the ITE IT87xx IR Receiver
40   -
41   -config LIRC_ITE8709
42   - tristate "ITE8709 CIR Port Receiver"
43   - depends on LIRC && PNP
44   - help
45   - Driver for the ITE8709 IR Receiver
46   -
47 35 config LIRC_PARALLEL
48 36 tristate "Homebrew Parallel Port Receiver"
49 37 depends on LIRC && PARPORT
drivers/staging/lirc/Makefile
Diff comments   View file @ 812738e
... ... @@ -6,8 +6,6 @@
6 6 obj-$(CONFIG_LIRC_BT829) += lirc_bt829.o
7 7 obj-$(CONFIG_LIRC_IGORPLUGUSB) += lirc_igorplugusb.o
8 8 obj-$(CONFIG_LIRC_IMON) += lirc_imon.o
9   -obj-$(CONFIG_LIRC_IT87) += lirc_it87.o
10   -obj-$(CONFIG_LIRC_ITE8709) += lirc_ite8709.o
11 9 obj-$(CONFIG_LIRC_PARALLEL) += lirc_parallel.o
12 10 obj-$(CONFIG_LIRC_SASEM) += lirc_sasem.o
13 11 obj-$(CONFIG_LIRC_SERIAL) += lirc_serial.o
drivers/staging/lirc/lirc_it87.c
View file @ 812738e
Changes suppressed. Click to show
1   -/*
2   - * LIRC driver for ITE IT8712/IT8705 CIR port
3   - *
4   - * Copyright (C) 2001 Hans-Gunter Lutke Uphues <hg_lu@web.de>
5   - *
6   - * This program is free software; you can redistribute it and/or
7   - * modify it under the terms of the GNU General Public License as
8   - * published by the Free Software Foundation; either version 2 of the
9   - * License, or (at your option) any later version.
10   - *
11   - * This program is distributed in the hope that it will be useful, but
12   - * WITHOUT ANY WARRANTY; without even the implied warranty of
13   - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14   - * General Public License for more details.
15   -
16   - * You should have received a copy of the GNU General Public License
17   - * along with this program; if not, write to the Free Software
18   - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
19   - * USA
20   - *
21   - * ITE IT8705 and IT8712(not tested) and IT8720 CIR-port support for lirc based
22   - * via cut and paste from lirc_sir.c (C) 2000 Milan Pikula
23   - *
24   - * Attention: Sendmode only tested with debugging logs
25   - *
26   - * 2001/02/27 Christoph Bartelmus <lirc@bartelmus.de> :
27   - * reimplemented read function
28   - * 2005/06/05 Andrew Calkin implemented support for Asus Digimatrix,
29   - * based on work of the following member of the Outertrack Digimatrix
30   - * Forum: Art103 <r_tay@hotmail.com>
31   - * 2009/12/24 James Edwards <jimbo-lirc@edwardsclan.net> implemeted support
32   - * for ITE8704/ITE8718, on my machine, the DSDT reports 8704, but the
33   - * chip identifies as 18.
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/time.h>
45   -#include <linux/string.h>
46   -#include <linux/types.h>
47   -#include <linux/wait.h>
48   -#include <linux/mm.h>
49   -#include <linux/delay.h>
50   -#include <linux/poll.h>
51   -#include <asm/system.h>
52   -#include <linux/io.h>
53   -#include <linux/irq.h>
54   -#include <linux/fcntl.h>
55   -
56   -#include <linux/timer.h>
57   -#include <linux/pnp.h>
58   -
59   -#include <media/lirc.h>
60   -#include <media/lirc_dev.h>
61   -
62   -#include "lirc_it87.h"
63   -
64   -#ifdef LIRC_IT87_DIGIMATRIX
65   -static int digimatrix = 1;
66   -static int it87_freq = 36; /* kHz */
67   -static int irq = 9;
68   -#else
69   -static int digimatrix;
70   -static int it87_freq = 38; /* kHz */
71   -static int irq = IT87_CIR_DEFAULT_IRQ;
72   -#endif
73   -
74   -static unsigned long it87_bits_in_byte_out;
75   -static unsigned long it87_send_counter;
76   -static unsigned char it87_RXEN_mask = IT87_CIR_RCR_RXEN;
77   -
78   -#define RBUF_LEN 1024
79   -
80   -#define LIRC_DRIVER_NAME "lirc_it87"
81   -
82   -/* timeout for sequences in jiffies (=5/100s) */
83   -/* must be longer than TIME_CONST */
84   -#define IT87_TIMEOUT (HZ*5/100)
85   -
86   -/* module parameters */
87   -static int debug;
88   -#define dprintk(fmt, args...) \
89   - do { \
90   - if (debug) \
91   - printk(KERN_DEBUG LIRC_DRIVER_NAME ": " \
92   - fmt, ## args); \
93   - } while (0)
94   -
95   -static int io = IT87_CIR_DEFAULT_IOBASE;
96   -/* receiver demodulator default: off */
97   -static int it87_enable_demodulator;
98   -
99   -static int timer_enabled;
100   -static DEFINE_SPINLOCK(timer_lock);
101   -static struct timer_list timerlist;
102   -/* time of last signal change detected */
103   -static struct timeval last_tv = {0, 0};
104   -/* time of last UART data ready interrupt */
105   -static struct timeval last_intr_tv = {0, 0};
106   -static int last_value;
107   -
108   -static DECLARE_WAIT_QUEUE_HEAD(lirc_read_queue);
109   -
110   -static DEFINE_SPINLOCK(hardware_lock);
111   -static DEFINE_SPINLOCK(dev_lock);
112   -static bool device_open;
113   -
114   -static int rx_buf[RBUF_LEN];
115   -unsigned int rx_tail, rx_head;
116   -
117   -static struct pnp_driver it87_pnp_driver;
118   -
119   -/* SECTION: Prototypes */
120   -
121   -/* Communication with user-space */
122   -static int lirc_open(struct inode *inode, struct file *file);
123   -static int lirc_close(struct inode *inode, struct file *file);
124   -static unsigned int lirc_poll(struct file *file, poll_table *wait);
125   -static ssize_t lirc_read(struct file *file, char *buf,
126   - size_t count, loff_t *ppos);
127   -static ssize_t lirc_write(struct file *file, const char *buf,
128   - size_t n, loff_t *pos);
129   -static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
130   -static void add_read_queue(int flag, unsigned long val);
131   -static int init_chrdev(void);
132   -static void drop_chrdev(void);
133   -/* Hardware */
134   -static irqreturn_t it87_interrupt(int irq, void *dev_id);
135   -static void send_space(unsigned long len);
136   -static void send_pulse(unsigned long len);
137   -static void init_send(void);
138   -static void terminate_send(unsigned long len);
139   -static int init_hardware(void);
140   -static void drop_hardware(void);
141   -/* Initialisation */
142   -static int init_port(void);
143   -static void drop_port(void);
144   -
145   -
146   -/* SECTION: Communication with user-space */
147   -
148   -static int lirc_open(struct inode *inode, struct file *file)
149   -{
150   - spin_lock(&dev_lock);
151   - if (device_open) {
152   - spin_unlock(&dev_lock);
153   - return -EBUSY;
154   - }
155   - device_open = true;
156   - spin_unlock(&dev_lock);
157   - return 0;
158   -}
159   -
160   -
161   -static int lirc_close(struct inode *inode, struct file *file)
162   -{
163   - spin_lock(&dev_lock);
164   - device_open = false;
165   - spin_unlock(&dev_lock);
166   - return 0;
167   -}
168   -
169   -
170   -static unsigned int lirc_poll(struct file *file, poll_table *wait)
171   -{
172   - poll_wait(file, &lirc_read_queue, wait);
173   - if (rx_head != rx_tail)
174   - return POLLIN | POLLRDNORM;
175   - return 0;
176   -}
177   -
178   -
179   -static ssize_t lirc_read(struct file *file, char *buf,
180   - size_t count, loff_t *ppos)
181   -{
182   - int n = 0;
183   - int retval = 0;
184   -
185   - while (n < count) {
186   - if (file->f_flags & O_NONBLOCK && rx_head == rx_tail) {
187   - retval = -EAGAIN;
188   - break;
189   - }
190   - retval = wait_event_interruptible(lirc_read_queue,
191   - rx_head != rx_tail);
192   - if (retval)
193   - break;
194   -
195   - if (copy_to_user((void *) buf + n, (void *) (rx_buf + rx_head),
196   - sizeof(int))) {
197   - retval = -EFAULT;
198   - break;
199   - }
200   - rx_head = (rx_head + 1) & (RBUF_LEN - 1);
201   - n += sizeof(int);
202   - }
203   - if (n)
204   - return n;
205   - return retval;
206   -}
207   -
208   -
209   -static ssize_t lirc_write(struct file *file, const char *buf,
210   - size_t n, loff_t *pos)
211   -{
212   - int i = 0;
213   - int *tx_buf;
214   -
215   - if (n % sizeof(int))
216   - return -EINVAL;
217   - tx_buf = memdup_user(buf, n);
218   - if (IS_ERR(tx_buf))
219   - return PTR_ERR(tx_buf);
220   - n /= sizeof(int);
221   - init_send();
222   - while (1) {
223   - if (i >= n)
224   - break;
225   - if (tx_buf[i])
226   - send_pulse(tx_buf[i]);
227   - i++;
228   - if (i >= n)
229   - break;
230   - if (tx_buf[i])
231   - send_space(tx_buf[i]);
232   - i++;
233   - }
234   - terminate_send(tx_buf[i - 1]);
235   - kfree(tx_buf);
236   - return n;
237   -}
238   -
239   -
240   -static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
241   -{
242   - int retval = 0;
243   - __u32 value = 0;
244   - unsigned long hw_flags;
245   -
246   - if (cmd == LIRC_GET_FEATURES)
247   - value = LIRC_CAN_SEND_PULSE |
248   - LIRC_CAN_SET_SEND_CARRIER |
249   - LIRC_CAN_REC_MODE2;
250   - else if (cmd == LIRC_GET_SEND_MODE)
251   - value = LIRC_MODE_PULSE;
252   - else if (cmd == LIRC_GET_REC_MODE)
253   - value = LIRC_MODE_MODE2;
254   -
255   - switch (cmd) {
256   - case LIRC_GET_FEATURES:
257   - case LIRC_GET_SEND_MODE:
258   - case LIRC_GET_REC_MODE:
259   - retval = put_user(value, (__u32 *) arg);
260   - break;
261   -
262   - case LIRC_SET_SEND_MODE:
263   - case LIRC_SET_REC_MODE:
264   - retval = get_user(value, (__u32 *) arg);
265   - break;
266   -
267   - case LIRC_SET_SEND_CARRIER:
268   - retval = get_user(value, (__u32 *) arg);
269   - if (retval)
270   - return retval;
271   - value /= 1000;
272   - if (value > IT87_CIR_FREQ_MAX ||
273   - value < IT87_CIR_FREQ_MIN)
274   - return -EINVAL;
275   -
276   - it87_freq = value;
277   -
278   - spin_lock_irqsave(&hardware_lock, hw_flags);
279   - outb(((inb(io + IT87_CIR_TCR2) & IT87_CIR_TCR2_TXMPW) |
280   - (it87_freq - IT87_CIR_FREQ_MIN) << 3),
281   - io + IT87_CIR_TCR2);
282   - spin_unlock_irqrestore(&hardware_lock, hw_flags);
283   - dprintk("demodulation frequency: %d kHz\n", it87_freq);
284   -
285   - break;
286   -
287   - default:
288   - retval = -EINVAL;
289   - }
290   -
291   - if (retval)
292   - return retval;
293   -
294   - if (cmd == LIRC_SET_REC_MODE) {
295   - if (value != LIRC_MODE_MODE2)
296   - retval = -ENOSYS;
297   - } else if (cmd == LIRC_SET_SEND_MODE) {
298   - if (value != LIRC_MODE_PULSE)
299   - retval = -ENOSYS;
300   - }
301   - return retval;
302   -}
303   -
304   -static void add_read_queue(int flag, unsigned long val)
305   -{
306   - unsigned int new_rx_tail;
307   - int newval;
308   -
309   - dprintk("add flag %d with val %lu\n", flag, val);
310   -
311   - newval = val & PULSE_MASK;
312   -
313   - /*
314   - * statistically, pulses are ~TIME_CONST/2 too long. we could
315   - * maybe make this more exact, but this is good enough
316   - */
317   - if (flag) {
318   - /* pulse */
319   - if (newval > TIME_CONST / 2)
320   - newval -= TIME_CONST / 2;
321   - else /* should not ever happen */
322   - newval = 1;
323   - newval |= PULSE_BIT;
324   - } else
325   - newval += TIME_CONST / 2;
326   - new_rx_tail = (rx_tail + 1) & (RBUF_LEN - 1);
327   - if (new_rx_tail == rx_head) {
328   - dprintk("Buffer overrun.\n");
329   - return;
330   - }
331   - rx_buf[rx_tail] = newval;
332   - rx_tail = new_rx_tail;
333   - wake_up_interruptible(&lirc_read_queue);
334   -}
335   -
336   -
337   -static const struct file_operations lirc_fops = {
338   - .owner = THIS_MODULE,
339   - .read = lirc_read,
340   - .write = lirc_write,
341   - .poll = lirc_poll,
342   - .unlocked_ioctl = lirc_ioctl,
343   -#ifdef CONFIG_COMPAT
344   - .compat_ioctl = lirc_ioctl,
345   -#endif
346   - .open = lirc_open,
347   - .release = lirc_close,
348   - .llseek = noop_llseek,
349   -};
350   -
351   -static int set_use_inc(void *data)
352   -{
353   - return 0;
354   -}
355   -
356   -static void set_use_dec(void *data)
357   -{
358   -}
359   -
360   -static struct lirc_driver driver = {
361   - .name = LIRC_DRIVER_NAME,
362   - .minor = -1,
363   - .code_length = 1,
364   - .sample_rate = 0,
365   - .data = NULL,
366   - .add_to_buf = NULL,
367   - .set_use_inc = set_use_inc,
368   - .set_use_dec = set_use_dec,
369   - .fops = &lirc_fops,
370   - .dev = NULL,
371   - .owner = THIS_MODULE,
372   -};
373   -
374   -
375   -static int init_chrdev(void)
376   -{
377   - driver.minor = lirc_register_driver(&driver);
378   -
379   - if (driver.minor < 0) {
380   - printk(KERN_ERR LIRC_DRIVER_NAME ": init_chrdev() failed.\n");
381   - return -EIO;
382   - }
383   - return 0;
384   -}
385   -
386   -
387   -static void drop_chrdev(void)
388   -{
389   - lirc_unregister_driver(driver.minor);
390   -}
391   -
392   -
393   -/* SECTION: Hardware */
394   -static long delta(struct timeval *tv1, struct timeval *tv2)
395   -{
396   - unsigned long deltv;
397   -
398   - deltv = tv2->tv_sec - tv1->tv_sec;
399   - if (deltv > 15)
400   - deltv = 0xFFFFFF;
401   - else
402   - deltv = deltv*1000000 + tv2->tv_usec - tv1->tv_usec;
403   - return deltv;
404   -}
405   -
406   -static void it87_timeout(unsigned long data)
407   -{
408   - unsigned long flags;
409   -
410   - /* avoid interference with interrupt */
411   - spin_lock_irqsave(&timer_lock, flags);
412   -
413   - if (digimatrix) {
414   - /* We have timed out. Disable the RX mechanism. */
415   -
416   - outb((inb(io + IT87_CIR_RCR) & ~IT87_CIR_RCR_RXEN) |
417   - IT87_CIR_RCR_RXACT, io + IT87_CIR_RCR);
418   - if (it87_RXEN_mask)
419   - outb(inb(io + IT87_CIR_RCR) | IT87_CIR_RCR_RXEN,
420   - io + IT87_CIR_RCR);
421   - dprintk(" TIMEOUT\n");
422   - timer_enabled = 0;
423   -
424   - /* fifo clear */
425   - outb(inb(io + IT87_CIR_TCR1) | IT87_CIR_TCR1_FIFOCLR,
426   - io+IT87_CIR_TCR1);
427   -
428   - } else {
429   - /*
430   - * if last received signal was a pulse, but receiving stopped
431   - * within the 9 bit frame, we need to finish this pulse and
432   - * simulate a signal change to from pulse to space. Otherwise
433   - * upper layers will receive two sequences next time.
434   - */
435   -
436   - if (last_value) {
437   - unsigned long pulse_end;
438   -
439   - /* determine 'virtual' pulse end: */
440   - pulse_end = delta(&last_tv, &last_intr_tv);
441   - dprintk("timeout add %d for %lu usec\n",
442   - last_value, pulse_end);
443   - add_read_queue(last_value, pulse_end);
444   - last_value = 0;
445   - last_tv = last_intr_tv;
446   - }
447   - }
448   - spin_unlock_irqrestore(&timer_lock, flags);
449   -}
450   -
451   -static irqreturn_t it87_interrupt(int irq, void *dev_id)
452   -{
453   - unsigned char data;
454   - struct timeval curr_tv;
455   - static unsigned long deltv;
456   - unsigned long deltintrtv;
457   - unsigned long flags, hw_flags;
458   - int iir, lsr;
459   - int fifo = 0;
460   - static char lastbit;
461   - char bit;
462   -
463   - /* Bit duration in microseconds */
464   - const unsigned long bit_duration = 1000000ul /
465   - (115200 / IT87_CIR_BAUDRATE_DIVISOR);
466   -
467   -
468   - iir = inb(io + IT87_CIR_IIR);
469   -
470   - switch (iir & IT87_CIR_IIR_IID) {
471   - case 0x4:
472   - case 0x6:
473   - lsr = inb(io + IT87_CIR_RSR) & (IT87_CIR_RSR_RXFTO |
474   - IT87_CIR_RSR_RXFBC);
475   - fifo = lsr & IT87_CIR_RSR_RXFBC;
476   - dprintk("iir: 0x%x fifo: 0x%x\n", iir, lsr);
477   -
478   - /* avoid interference with timer */
479   - spin_lock_irqsave(&timer_lock, flags);
480   - spin_lock_irqsave(&hardware_lock, hw_flags);
481   - if (digimatrix) {
482   - static unsigned long acc_pulse;
483   - static unsigned long acc_space;
484   -
485   - do {
486   - data = inb(io + IT87_CIR_DR);
487   - data = ~data;
488   - fifo--;
489   - if (data != 0x00) {
490   - if (timer_enabled)
491   - del_timer(&timerlist);
492   - /*
493   - * start timer for end of
494   - * sequence detection
495   - */
496   - timerlist.expires = jiffies +
497   - IT87_TIMEOUT;
498   - add_timer(&timerlist);
499   - timer_enabled = 1;
500   - }
501   - /* Loop through */
502   - for (bit = 0; bit < 8; ++bit) {
503   - if ((data >> bit) & 1) {
504   - ++acc_pulse;
505   - if (lastbit == 0) {
506   - add_read_queue(0,
507   - acc_space *
508   - bit_duration);
509   - acc_space = 0;
510   - }
511   - } else {
512   - ++acc_space;
513   - if (lastbit == 1) {
514   - add_read_queue(1,
515   - acc_pulse *
516   - bit_duration);
517   - acc_pulse = 0;
518   - }
519   - }
520   - lastbit = (data >> bit) & 1;
521   - }
522   -
523   - } while (fifo != 0);
524   - } else { /* Normal Operation */
525   - do {
526   - del_timer(&timerlist);
527   - data = inb(io + IT87_CIR_DR);
528   -
529   - dprintk("data=%02x\n", data);
530   - do_gettimeofday(&curr_tv);
531   - deltv = delta(&last_tv, &curr_tv);
532   - deltintrtv = delta(&last_intr_tv, &curr_tv);
533   -
534   - dprintk("t %lu , d %d\n",
535   - deltintrtv, (int)data);
536   -
537   - /*
538   - * if nothing came in last 2 cycles,
539   - * it was gap
540   - */
541   - if (deltintrtv > TIME_CONST * 2) {
542   - if (last_value) {
543   - dprintk("GAP\n");
544   -
545   - /* simulate signal change */
546   - add_read_queue(last_value,
547   - deltv -
548   - deltintrtv);
549   - last_value = 0;
550   - last_tv.tv_sec =
551   - last_intr_tv.tv_sec;
552   - last_tv.tv_usec =
553   - last_intr_tv.tv_usec;
554   - deltv = deltintrtv;
555   - }
556   - }
557   - data = 1;
558   - if (data ^ last_value) {
559   - /*
560   - * deltintrtv > 2*TIME_CONST,
561   - * remember ? the other case is
562   - * timeout
563   - */
564   - add_read_queue(last_value,
565   - deltv-TIME_CONST);
566   - last_value = data;
567   - last_tv = curr_tv;
568   - if (last_tv.tv_usec >= TIME_CONST)
569   - last_tv.tv_usec -= TIME_CONST;
570   - else {
571   - last_tv.tv_sec--;
572   - last_tv.tv_usec += 1000000 -
573   - TIME_CONST;
574   - }
575   - }
576   - last_intr_tv = curr_tv;
577   - if (data) {
578   - /*
579   - * start timer for end of
580   - * sequence detection
581   - */
582   - timerlist.expires =
583   - jiffies + IT87_TIMEOUT;
584   - add_timer(&timerlist);
585   - }
586   - outb((inb(io + IT87_CIR_RCR) &
587   - ~IT87_CIR_RCR_RXEN) |
588   - IT87_CIR_RCR_RXACT,
589   - io + IT87_CIR_RCR);
590   - if (it87_RXEN_mask)
591   - outb(inb(io + IT87_CIR_RCR) |
592   - IT87_CIR_RCR_RXEN,
593   - io + IT87_CIR_RCR);
594   - fifo--;
595   - } while (fifo != 0);
596   - }
597   - spin_unlock_irqrestore(&hardware_lock, hw_flags);
598   - spin_unlock_irqrestore(&timer_lock, flags);
599   -
600   - return IRQ_RETVAL(IRQ_HANDLED);
601   -
602   - default:
603   - /* not our irq */
604   - dprintk("unknown IRQ (shouldn't happen) !!\n");
605   - return IRQ_RETVAL(IRQ_NONE);
606   - }
607   -}
608   -
609   -
610   -static void send_it87(unsigned long len, unsigned long stime,
611   - unsigned char send_byte, unsigned int count_bits)
612   -{
613   - long count = len / stime;
614   - long time_left = 0;
615   - static unsigned char byte_out;
616   - unsigned long hw_flags;
617   -
618   - dprintk("%s: len=%ld, sb=%d\n", __func__, len, send_byte);
619   -
620   - time_left = (long)len - (long)count * (long)stime;
621   - count += ((2 * time_left) / stime);
622   - while (count) {
623   - long i = 0;
624   - for (i = 0; i < count_bits; i++) {
625   - byte_out = (byte_out << 1) | (send_byte & 1);
626   - it87_bits_in_byte_out++;
627   - }
628   - if (it87_bits_in_byte_out == 8) {
629   - dprintk("out=0x%x, tsr_txfbc: 0x%x\n",
630   - byte_out,
631   - inb(io + IT87_CIR_TSR) &
632   - IT87_CIR_TSR_TXFBC);
633   -
634   - while ((inb(io + IT87_CIR_TSR) &
635   - IT87_CIR_TSR_TXFBC) >= IT87_CIR_FIFO_SIZE)
636   - ;
637   -
638   - spin_lock_irqsave(&hardware_lock, hw_flags);
639   - outb(byte_out, io + IT87_CIR_DR);
640   - spin_unlock_irqrestore(&hardware_lock, hw_flags);
641   -
642   - it87_bits_in_byte_out = 0;
643   - it87_send_counter++;
644   - byte_out = 0;
645   - }
646   - count--;
647   - }
648   -}
649   -
650   -
651   -/*TODO: maybe exchange space and pulse because it8705 only modulates 0-bits */
652   -
653   -static void send_space(unsigned long len)
654   -{
655   - send_it87(len, TIME_CONST, IT87_CIR_SPACE, IT87_CIR_BAUDRATE_DIVISOR);
656   -}
657   -
658   -static void send_pulse(unsigned long len)
659   -{
660   - send_it87(len, TIME_CONST, IT87_CIR_PULSE, IT87_CIR_BAUDRATE_DIVISOR);
661   -}
662   -
663   -
664   -static void init_send()
665   -{
666   - unsigned long flags;
667   -
668   - spin_lock_irqsave(&hardware_lock, flags);
669   - /* RXEN=0: receiver disable */
670   - it87_RXEN_mask = 0;
671   - outb(inb(io + IT87_CIR_RCR) & ~IT87_CIR_RCR_RXEN,
672   - io + IT87_CIR_RCR);
673   - spin_unlock_irqrestore(&hardware_lock, flags);
674   - it87_bits_in_byte_out = 0;
675   - it87_send_counter = 0;
676   -}
677   -
678   -
679   -static void terminate_send(unsigned long len)
680   -{
681   - unsigned long flags;
682   - unsigned long last = 0;
683   -
684   - last = it87_send_counter;
685   - /* make sure all necessary data has been sent */
686   - while (last == it87_send_counter)
687   - send_space(len);
688   - /* wait until all data sent */
689   - while ((inb(io + IT87_CIR_TSR) & IT87_CIR_TSR_TXFBC) != 0)
690   - ;
691   - /* then re-enable receiver */
692   - spin_lock_irqsave(&hardware_lock, flags);
693   - it87_RXEN_mask = IT87_CIR_RCR_RXEN;
694   - outb(inb(io + IT87_CIR_RCR) | IT87_CIR_RCR_RXEN,
695   - io + IT87_CIR_RCR);
696   - spin_unlock_irqrestore(&hardware_lock, flags);
697   -}
698   -
699   -
700   -static int init_hardware(void)
701   -{
702   - unsigned long flags;
703   - unsigned char it87_rcr = 0;
704   -
705   - spin_lock_irqsave(&hardware_lock, flags);
706   - /* init cir-port */
707   - /* enable r/w-access to Baudrate-Register */
708   - outb(IT87_CIR_IER_BR, io + IT87_CIR_IER);
709   - outb(IT87_CIR_BAUDRATE_DIVISOR % 0x100, io+IT87_CIR_BDLR);
710   - outb(IT87_CIR_BAUDRATE_DIVISOR / 0x100, io+IT87_CIR_BDHR);
711   - /* Baudrate Register off, define IRQs: Input only */
712   - if (digimatrix) {
713   - outb(IT87_CIR_IER_IEC | IT87_CIR_IER_RFOIE, io + IT87_CIR_IER);
714   - /* RX: HCFS=0, RXDCR = 001b (33,75..38,25 kHz), RXEN=1 */
715   - } else {
716   - outb(IT87_CIR_IER_IEC | IT87_CIR_IER_RDAIE, io + IT87_CIR_IER);
717   - /* RX: HCFS=0, RXDCR = 001b (35,6..40,3 kHz), RXEN=1 */
718   - }
719   - it87_rcr = (IT87_CIR_RCR_RXEN & it87_RXEN_mask) | 0x1;
720   - if (it87_enable_demodulator)
721   - it87_rcr |= IT87_CIR_RCR_RXEND;
722   - outb(it87_rcr, io + IT87_CIR_RCR);
723   - if (digimatrix) {
724   - /* Set FIFO depth to 1 byte, and disable TX */
725   - outb(inb(io + IT87_CIR_TCR1) | 0x00,
726   - io + IT87_CIR_TCR1);
727   -
728   - /*
729   - * TX: it87_freq (36kHz), 'reserved' sensitivity
730   - * setting (0x00)
731   - */
732   - outb(((it87_freq - IT87_CIR_FREQ_MIN) << 3) | 0x00,
733   - io + IT87_CIR_TCR2);
734   - } else {
735   - /* TX: 38kHz, 13,3us (pulse-width) */
736   - outb(((it87_freq - IT87_CIR_FREQ_MIN) << 3) | 0x06,
737   - io + IT87_CIR_TCR2);
738   - }
739   - spin_unlock_irqrestore(&hardware_lock, flags);
740   - return 0;
741   -}
742   -
743   -
744   -static void drop_hardware(void)
745   -{
746   - unsigned long flags;
747   -
748   - spin_lock_irqsave(&hardware_lock, flags);
749   - disable_irq(irq);
750   - /* receiver disable */
751   - it87_RXEN_mask = 0;
752   - outb(0x1, io + IT87_CIR_RCR);
753   - /* turn off irqs */
754   - outb(0, io + IT87_CIR_IER);
755   - /* fifo clear */
756   - outb(IT87_CIR_TCR1_FIFOCLR, io+IT87_CIR_TCR1);
757   - /* reset */
758   - outb(IT87_CIR_IER_RESET, io+IT87_CIR_IER);
759   - enable_irq(irq);
760   - spin_unlock_irqrestore(&hardware_lock, flags);
761   -}
762   -
763   -
764   -static unsigned char it87_read(unsigned char port)
765   -{
766   - outb(port, IT87_ADRPORT);
767   - return inb(IT87_DATAPORT);
768   -}
769   -
770   -
771   -static void it87_write(unsigned char port, unsigned char data)
772   -{
773   - outb(port, IT87_ADRPORT);
774   - outb(data, IT87_DATAPORT);
775   -}
776   -
777   -
778   -/* SECTION: Initialisation */
779   -
780   -static int init_port(void)
781   -{
782   - unsigned long hw_flags;
783   - int retval = 0;
784   -
785   - unsigned char init_bytes[4] = IT87_INIT;
786   - unsigned char it87_chipid = 0;
787   - unsigned char ldn = 0;
788   - unsigned int it87_io = 0;
789   - unsigned int it87_irq = 0;
790   -
791   - /* Enter MB PnP Mode */
792   - outb(init_bytes[0], IT87_ADRPORT);
793   - outb(init_bytes[1], IT87_ADRPORT);
794   - outb(init_bytes[2], IT87_ADRPORT);
795   - outb(init_bytes[3], IT87_ADRPORT);
796   -
797   - /* 8712 or 8705 ? */
798   - it87_chipid = it87_read(IT87_CHIP_ID1);
799   - if (it87_chipid != 0x87) {
800   - retval = -ENXIO;
801   - return retval;
802   - }
803   - it87_chipid = it87_read(IT87_CHIP_ID2);
804   - if ((it87_chipid != 0x05) &&
805   - (it87_chipid != 0x12) &&
806   - (it87_chipid != 0x18) &&
807   - (it87_chipid != 0x20)) {
808   - printk(KERN_INFO LIRC_DRIVER_NAME
809   - ": no IT8704/05/12/18/20 found (claimed IT87%02x), "
810   - "exiting..\n", it87_chipid);
811   - retval = -ENXIO;
812   - return retval;
813   - }
814   - printk(KERN_INFO LIRC_DRIVER_NAME
815   - ": found IT87%02x.\n",
816   - it87_chipid);
817   -
818   - /* get I/O-Port and IRQ */
819   - if (it87_chipid == 0x12 || it87_chipid == 0x18)
820   - ldn = IT8712_CIR_LDN;
821   - else
822   - ldn = IT8705_CIR_LDN;
823   - it87_write(IT87_LDN, ldn);
824   -
825   - it87_io = it87_read(IT87_CIR_BASE_MSB) * 256 +
826   - it87_read(IT87_CIR_BASE_LSB);
827   - if (it87_io == 0) {
828   - if (io == 0)
829   - io = IT87_CIR_DEFAULT_IOBASE;
830   - printk(KERN_INFO LIRC_DRIVER_NAME
831   - ": set default io 0x%x\n",
832   - io);
833   - it87_write(IT87_CIR_BASE_MSB, io / 0x100);
834   - it87_write(IT87_CIR_BASE_LSB, io % 0x100);
835   - } else
836   - io = it87_io;
837   -
838   - it87_irq = it87_read(IT87_CIR_IRQ);
839   - if (digimatrix || it87_irq == 0) {
840   - if (irq == 0)
841   - irq = IT87_CIR_DEFAULT_IRQ;
842   - printk(KERN_INFO LIRC_DRIVER_NAME
843   - ": set default irq 0x%x\n",
844   - irq);
845   - it87_write(IT87_CIR_IRQ, irq);
846   - } else
847   - irq = it87_irq;
848   -
849   - spin_lock_irqsave(&hardware_lock, hw_flags);
850   - /* reset */
851   - outb(IT87_CIR_IER_RESET, io+IT87_CIR_IER);
852   - /* fifo clear */
853   - outb(IT87_CIR_TCR1_FIFOCLR |
854   - /* IT87_CIR_TCR1_ILE | */
855   - IT87_CIR_TCR1_TXRLE |
856   - IT87_CIR_TCR1_TXENDF, io+IT87_CIR_TCR1);
857   - spin_unlock_irqrestore(&hardware_lock, hw_flags);
858   -
859   - /* get I/O port access and IRQ line */
860   - if (request_region(io, 8, LIRC_DRIVER_NAME) == NULL) {
861   - printk(KERN_ERR LIRC_DRIVER_NAME
862   - ": i/o port 0x%.4x already in use.\n", io);
863   - /* Leaving MB PnP Mode */
864   - it87_write(IT87_CFGCTRL, 0x2);
865   - return -EBUSY;
866   - }
867   -
868   - /* activate CIR-Device */
869   - it87_write(IT87_CIR_ACT, 0x1);
870   -
871   - /* Leaving MB PnP Mode */
872   - it87_write(IT87_CFGCTRL, 0x2);
873   -
874   - retval = request_irq(irq, it87_interrupt, 0 /*IRQF_DISABLED*/,
875   - LIRC_DRIVER_NAME, NULL);
876   - if (retval < 0) {
877   - printk(KERN_ERR LIRC_DRIVER_NAME
878   - ": IRQ %d already in use.\n",
879   - irq);
880   - release_region(io, 8);
881   - return retval;
882   - }
883   -
884   - printk(KERN_INFO LIRC_DRIVER_NAME
885   - ": I/O port 0x%.4x, IRQ %d.\n", io, irq);
886   -
887   - init_timer(&timerlist);
888   - timerlist.function = it87_timeout;
889   - timerlist.data = 0xabadcafe;
890   -
891   - return 0;
892   -}
893   -
894   -
895   -static void drop_port(void)
896   -{
897   -#if 0
898   - unsigned char init_bytes[4] = IT87_INIT;
899   -
900   - /* Enter MB PnP Mode */
901   - outb(init_bytes[0], IT87_ADRPORT);
902   - outb(init_bytes[1], IT87_ADRPORT);
903   - outb(init_bytes[2], IT87_ADRPORT);
904   - outb(init_bytes[3], IT87_ADRPORT);
905   -
906   - /* deactivate CIR-Device */
907   - it87_write(IT87_CIR_ACT, 0x0);
908   -
909   - /* Leaving MB PnP Mode */
910   - it87_write(IT87_CFGCTRL, 0x2);
911   -#endif
912   -
913   - del_timer_sync(&timerlist);
914   - free_irq(irq, NULL);
915   - release_region(io, 8);
916   -}
917   -
918   -
919   -static int init_lirc_it87(void)
920   -{
921   - int retval;
922   -
923   - init_waitqueue_head(&lirc_read_queue);
924   - retval = init_port();
925   - if (retval < 0)
926   - return retval;
927   - init_hardware();
928   - printk(KERN_INFO LIRC_DRIVER_NAME ": Installed.\n");
929   - return 0;
930   -}
931   -
932   -static int it87_probe(struct pnp_dev *pnp_dev,
933   - const struct pnp_device_id *dev_id)
934   -{
935   - int retval;
936   -
937   - driver.dev = &pnp_dev->dev;
938   -
939   - retval = init_chrdev();
940   - if (retval < 0)
941   - return retval;
942   -
943   - retval = init_lirc_it87();
944   - if (retval)
945   - goto init_lirc_it87_failed;
946   -
947   - return 0;
948   -
949   -init_lirc_it87_failed:
950   - drop_chrdev();
951   -
952   - return retval;
953   -}
954   -
955   -static int __init lirc_it87_init(void)
956   -{
957   - return pnp_register_driver(&it87_pnp_driver);
958   -}
959   -
960   -
961   -static void __exit lirc_it87_exit(void)
962   -{
963   - drop_hardware();
964   - drop_chrdev();
965   - drop_port();
966   - pnp_unregister_driver(&it87_pnp_driver);
967   - printk(KERN_INFO LIRC_DRIVER_NAME ": Uninstalled.\n");
968   -}
969   -
970   -/* SECTION: PNP for ITE8704/13/18 */
971   -
972   -static const struct pnp_device_id pnp_dev_table[] = {
973   - {"ITE8704", 0},
974   - {"ITE8713", 0},
975   - {}
976   -};
977   -
978   -MODULE_DEVICE_TABLE(pnp, pnp_dev_table);
979   -
980   -static struct pnp_driver it87_pnp_driver = {
981   - .name = LIRC_DRIVER_NAME,
982   - .id_table = pnp_dev_table,
983   - .probe = it87_probe,
984   -};
985   -
986   -module_init(lirc_it87_init);
987   -module_exit(lirc_it87_exit);
988   -
989   -MODULE_DESCRIPTION("LIRC driver for ITE IT8704/05/12/18/20 CIR port");
990   -MODULE_AUTHOR("Hans-Gunter Lutke Uphues");
991   -MODULE_LICENSE("GPL");
992   -
993   -module_param(io, int, S_IRUGO);
994   -MODULE_PARM_DESC(io, "I/O base address (default: 0x310)");
995   -
996   -module_param(irq, int, S_IRUGO);
997   -#ifdef LIRC_IT87_DIGIMATRIX
998   -MODULE_PARM_DESC(irq, "Interrupt (1,3-12) (default: 9)");
999   -#else
1000   -MODULE_PARM_DESC(irq, "Interrupt (1,3-12) (default: 7)");
1001   -#endif
1002   -
1003   -module_param(it87_enable_demodulator, bool, S_IRUGO);
1004   -MODULE_PARM_DESC(it87_enable_demodulator,
1005   - "Receiver demodulator enable/disable (1/0), default: 0");
1006   -
1007   -module_param(debug, bool, S_IRUGO | S_IWUSR);
1008   -MODULE_PARM_DESC(debug, "Enable debugging messages");
1009   -
1010   -module_param(digimatrix, bool, S_IRUGO | S_IWUSR);
1011   -#ifdef LIRC_IT87_DIGIMATRIX
1012   -MODULE_PARM_DESC(digimatrix,
1013   - "Asus Digimatrix it87 compat. enable/disable (1/0), default: 1");
1014   -#else
1015   -MODULE_PARM_DESC(digimatrix,
1016   - "Asus Digimatrix it87 compat. enable/disable (1/0), default: 0");
1017   -#endif
1018   -
1019   -
1020   -module_param(it87_freq, int, S_IRUGO);
1021   -#ifdef LIRC_IT87_DIGIMATRIX
1022   -MODULE_PARM_DESC(it87_freq,
1023   - "Carrier demodulator frequency (kHz), (default: 36)");
1024   -#else
1025   -MODULE_PARM_DESC(it87_freq,
1026   - "Carrier demodulator frequency (kHz), (default: 38)");
1027   -#endif
drivers/staging/lirc/lirc_it87.h
View file @ 812738e
1   -/* lirc_it87.h */
2   -/* SECTION: Definitions */
3   -
4   -/********************************* ITE IT87xx ************************/
5   -
6   -/* based on the following documentation from ITE:
7   - a) IT8712F Preliminary CIR Programming Guide V0.1
8   - b) IT8705F Simple LPC I/O Preliminary Specification V0.3
9   - c) IT8712F EC-LPC I/O Preliminary Specification V0.5
10   -*/
11   -
12   -/* IT8712/05 Ports: */
13   -#define IT87_ADRPORT 0x2e
14   -#define IT87_DATAPORT 0x2f
15   -#define IT87_INIT {0x87, 0x01, 0x55, 0x55}
16   -
17   -/* alternate Ports: */
18   -/*
19   -#define IT87_ADRPORT 0x4e
20   -#define IT87_DATAPORT 0x4f
21   -#define IT87_INIT {0x87, 0x01, 0x55, 0xaa}
22   - */
23   -
24   -/* IT8712/05 Registers */
25   -#define IT87_CFGCTRL 0x2
26   -#define IT87_LDN 0x7
27   -#define IT87_CHIP_ID1 0x20
28   -#define IT87_CHIP_ID2 0x21
29   -#define IT87_CFG_VERSION 0x22
30   -#define IT87_SWSUSPEND 0x23
31   -
32   -#define IT8712_CIR_LDN 0xa
33   -#define IT8705_CIR_LDN 0x7
34   -
35   -/* CIR Configuration Registers: */
36   -#define IT87_CIR_ACT 0x30
37   -#define IT87_CIR_BASE_MSB 0x60
38   -#define IT87_CIR_BASE_LSB 0x61
39   -#define IT87_CIR_IRQ 0x70
40   -#define IT87_CIR_CONFIG 0xf0
41   -
42   -/* List of IT87_CIR registers: offset to BaseAddr */
43   -#define IT87_CIR_DR 0
44   -#define IT87_CIR_IER 1
45   -#define IT87_CIR_RCR 2
46   -#define IT87_CIR_TCR1 3
47   -#define IT87_CIR_TCR2 4
48   -#define IT87_CIR_TSR 5
49   -#define IT87_CIR_RSR 6
50   -#define IT87_CIR_BDLR 5
51   -#define IT87_CIR_BDHR 6
52   -#define IT87_CIR_IIR 7
53   -
54   -/* Bit Definition */
55   -/* IER: */
56   -#define IT87_CIR_IER_TM_EN 0x80
57   -#define IT87_CIR_IER_RESEVED 0x40
58   -#define IT87_CIR_IER_RESET 0x20
59   -#define IT87_CIR_IER_BR 0x10
60   -#define IT87_CIR_IER_IEC 0x8
61   -#define IT87_CIR_IER_RFOIE 0x4
62   -#define IT87_CIR_IER_RDAIE 0x2
63   -#define IT87_CIR_IER_TLDLIE 0x1
64   -
65   -/* RCR: */
66   -#define IT87_CIR_RCR_RDWOS 0x80
67   -#define IT87_CIR_RCR_HCFS 0x40
68   -#define IT87_CIR_RCR_RXEN 0x20
69   -#define IT87_CIR_RCR_RXEND 0x10
70   -#define IT87_CIR_RCR_RXACT 0x8
71   -#define IT87_CIR_RCR_RXDCR 0x7
72   -
73   -/* TCR1: */
74   -#define IT87_CIR_TCR1_FIFOCLR 0x80
75   -#define IT87_CIR_TCR1_ILE 0x40
76   -#define IT87_CIR_TCR1_FIFOTL 0x30
77   -#define IT87_CIR_TCR1_TXRLE 0x8
78   -#define IT87_CIR_TCR1_TXENDF 0x4
79   -#define IT87_CIR_TCR1_TXMPM 0x3
80   -
81   -/* TCR2: */
82   -#define IT87_CIR_TCR2_CFQ 0xf8
83   -#define IT87_CIR_TCR2_TXMPW 0x7
84   -
85   -/* TSR: */
86   -#define IT87_CIR_TSR_RESERVED 0xc0
87   -#define IT87_CIR_TSR_TXFBC 0x3f
88   -
89   -/* RSR: */
90   -#define IT87_CIR_RSR_RXFTO 0x80
91   -#define IT87_CIR_RSR_RESERVED 0x40
92   -#define IT87_CIR_RSR_RXFBC 0x3f
93   -
94   -/* IIR: */
95   -#define IT87_CIR_IIR_RESERVED 0xf8
96   -#define IT87_CIR_IIR_IID 0x6
97   -#define IT87_CIR_IIR_IIP 0x1
98   -
99   -/* TM: */
100   -#define IT87_CIR_TM_IL_SEL 0x80
101   -#define IT87_CIR_TM_RESERVED 0x40
102   -#define IT87_CIR_TM_TM_REG 0x3f
103   -
104   -#define IT87_CIR_FIFO_SIZE 32
105   -
106   -/* Baudratedivisor for IT87: power of 2: only 1,2,4 or 8) */
107   -#define IT87_CIR_BAUDRATE_DIVISOR 0x1
108   -#define IT87_CIR_DEFAULT_IOBASE 0x310
109   -#define IT87_CIR_DEFAULT_IRQ 0x7
110   -#define IT87_CIR_SPACE 0x00
111   -#define IT87_CIR_PULSE 0xff
112   -#define IT87_CIR_FREQ_MIN 27
113   -#define IT87_CIR_FREQ_MAX 58
114   -#define TIME_CONST (IT87_CIR_BAUDRATE_DIVISOR * 8000000ul / 115200ul)
115   -
116   -/********************************* ITE IT87xx ************************/
drivers/staging/lirc/lirc_ite8709.c
View file @ 812738e
1   -/*
2   - * LIRC driver for ITE8709 CIR port
3   - *
4   - * Copyright (C) 2008 Grégory Lardière <spmf2004-lirc@yahoo.fr>
5   - *
6   - * This program is free software; you can redistribute it and/or
7   - * modify it under the terms of the GNU General Public License as
8   - * published by the Free Software Foundation; either version 2 of the
9   - * License, or (at your option) any later version.
10   - *
11   - * This program is distributed in the hope that it will be useful, but
12   - * WITHOUT ANY WARRANTY; without even the implied warranty of
13   - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14   - * General Public License for more details.
15   - *
16   - * You should have received a copy of the GNU General Public License
17   - * along with this program; if not, write to the Free Software
18   - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
19   - * USA
20   - */
21   -
22   -#include <linux/module.h>
23   -#include <linux/interrupt.h>
24   -#include <linux/sched.h>
25   -#include <linux/delay.h>
26   -#include <linux/pnp.h>
27   -#include <linux/io.h>
28   -
29   -#include <media/lirc.h>
30   -#include <media/lirc_dev.h>
31   -
32   -#define LIRC_DRIVER_NAME "lirc_ite8709"
33   -
34   -#define BUF_CHUNK_SIZE sizeof(int)
35   -#define BUF_SIZE (128*BUF_CHUNK_SIZE)
36   -
37   -/*
38   - * The ITE8709 device seems to be the combination of IT8512 superIO chip and
39   - * a specific firmware running on the IT8512's embedded micro-controller.
40   - * In addition of the embedded micro-controller, the IT8512 chip contains a
41   - * CIR module and several other modules. A few modules are directly accessible
42   - * by the host CPU, but most of them are only accessible by the
43   - * micro-controller. The CIR module is only accessible by the micro-controller.
44   - * The battery-backed SRAM module is accessible by the host CPU and the
45   - * micro-controller. So one of the MC's firmware role is to act as a bridge
46   - * between the host CPU and the CIR module. The firmware implements a kind of
47   - * communication protocol using the SRAM module as a shared memory. The IT8512
48   - * specification is publicly available on ITE's web site, but the communication
49   - * protocol is not, so it was reverse-engineered.
50   - */
51   -
52   -/* ITE8709 Registers addresses and values (reverse-engineered) */
53   -#define ITE8709_MODE 0x1a
54   -#define ITE8709_REG_ADR 0x1b
55   -#define ITE8709_REG_VAL 0x1c
56   -#define ITE8709_IIR 0x1e /* Interrupt identification register */
57   -#define ITE8709_RFSR 0x1f /* Receiver FIFO status register */
58   -#define ITE8709_FIFO_START 0x20
59   -
60   -#define ITE8709_MODE_READY 0X00
61   -#define ITE8709_MODE_WRITE 0X01
62   -#define ITE8709_MODE_READ 0X02
63   -#define ITE8709_IIR_RDAI 0x02 /* Receiver data available interrupt */
64   -#define ITE8709_IIR_RFOI 0x04 /* Receiver FIFO overrun interrupt */
65   -#define ITE8709_RFSR_MASK 0x3f /* FIFO byte count mask */
66   -
67   -/*
68   - * IT8512 CIR-module registers addresses and values
69   - * (from IT8512 E/F specification v0.4.1)
70   - */
71   -#define IT8512_REG_MSTCR 0x01 /* Master control register */
72   -#define IT8512_REG_IER 0x02 /* Interrupt enable register */
73   -#define IT8512_REG_CFR 0x04 /* Carrier frequency register */
74   -#define IT8512_REG_RCR 0x05 /* Receive control register */
75   -#define IT8512_REG_BDLR 0x08 /* Baud rate divisor low byte register */
76   -#define IT8512_REG_BDHR 0x09 /* Baud rate divisor high byte register */
77   -
78   -#define IT8512_MSTCR_RESET 0x01 /* Reset registers to default value */
79   -#define IT8512_MSTCR_FIFOCLR 0x02 /* Clear FIFO */
80   -#define IT8512_MSTCR_FIFOTL_7 0x04 /* FIFO threshold level : 7 */
81   -#define IT8512_MSTCR_FIFOTL_25 0x0c /* FIFO threshold level : 25 */
82   -#define IT8512_IER_RDAIE 0x02 /* Enable data interrupt request */
83   -#define IT8512_IER_RFOIE 0x04 /* Enable FIFO overrun interrupt req */
84   -#define IT8512_IER_IEC 0x80 /* Enable interrupt request */
85   -#define IT8512_CFR_CF_36KHZ 0x09 /* Carrier freq : low speed, 36kHz */
86   -#define IT8512_RCR_RXDCR_1 0x01 /* Demodulation carrier range : 1 */
87   -#define IT8512_RCR_RXACT 0x08 /* Receiver active */
88   -#define IT8512_RCR_RXEN 0x80 /* Receiver enable */
89   -#define IT8512_BDR_6 6 /* Baud rate divisor : 6 */
90   -
91   -/* Actual values used by this driver */
92   -#define CFG_FIFOTL IT8512_MSTCR_FIFOTL_25
93   -#define CFG_CR_FREQ IT8512_CFR_CF_36KHZ
94   -#define CFG_DCR IT8512_RCR_RXDCR_1
95   -#define CFG_BDR IT8512_BDR_6
96   -#define CFG_TIMEOUT 100000 /* Rearm interrupt when a space is > 100 ms */
97   -
98   -static int debug;
99   -
100   -struct ite8709_device {
101   - int use_count;
102   - int io;
103   - int irq;
104   - spinlock_t hardware_lock;
105   - __u64 acc_pulse;
106   - __u64 acc_space;
107   - char lastbit;
108   - struct timeval last_tv;
109   - struct lirc_driver driver;
110   - struct tasklet_struct tasklet;
111   - char force_rearm;
112   - char rearmed;
113   - char device_busy;
114   -};
115   -
116   -#define dprintk(fmt, args...) \
117   - do { \
118   - if (debug) \
119   - printk(KERN_DEBUG LIRC_DRIVER_NAME ": " \
120   - fmt, ## args); \
121   - } while (0)
122   -
123   -
124   -static unsigned char ite8709_read(struct ite8709_device *dev,
125   - unsigned char port)
126   -{
127   - outb(port, dev->io);
128   - return inb(dev->io+1);
129   -}
130   -
131   -static void ite8709_write(struct ite8709_device *dev, unsigned char port,
132   - unsigned char data)
133   -{
134   - outb(port, dev->io);
135   - outb(data, dev->io+1);
136   -}
137   -
138   -static void ite8709_wait_device(struct ite8709_device *dev)
139   -{
140   - int i = 0;
141   - /*
142   - * loop until device tells it's ready to continue
143   - * iterations count is usually ~750 but can sometimes achieve 13000
144   - */
145   - for (i = 0; i < 15000; i++) {
146   - udelay(2);
147   - if (ite8709_read(dev, ITE8709_MODE) == ITE8709_MODE_READY)
148   - break;
149   - }
150   -}
151   -
152   -static void ite8709_write_register(struct ite8709_device *dev,
153   - unsigned char reg_adr, unsigned char reg_value)
154   -{
155   - ite8709_wait_device(dev);
156   -
157   - ite8709_write(dev, ITE8709_REG_VAL, reg_value);
158   - ite8709_write(dev, ITE8709_REG_ADR, reg_adr);
159   - ite8709_write(dev, ITE8709_MODE, ITE8709_MODE_WRITE);
160   -}
161   -
162   -static void ite8709_init_hardware(struct ite8709_device *dev)
163   -{
164   - spin_lock_irq(&dev->hardware_lock);
165   - dev->device_busy = 1;
166   - spin_unlock_irq(&dev->hardware_lock);
167   -
168   - ite8709_write_register(dev, IT8512_REG_BDHR, (CFG_BDR >> 8) & 0xff);
169   - ite8709_write_register(dev, IT8512_REG_BDLR, CFG_BDR & 0xff);
170   - ite8709_write_register(dev, IT8512_REG_CFR, CFG_CR_FREQ);
171   - ite8709_write_register(dev, IT8512_REG_IER,
172   - IT8512_IER_IEC | IT8512_IER_RFOIE | IT8512_IER_RDAIE);
173   - ite8709_write_register(dev, IT8512_REG_RCR, CFG_DCR);
174   - ite8709_write_register(dev, IT8512_REG_MSTCR,
175   - CFG_FIFOTL | IT8512_MSTCR_FIFOCLR);
176   - ite8709_write_register(dev, IT8512_REG_RCR,
177   - IT8512_RCR_RXEN | IT8512_RCR_RXACT | CFG_DCR);
178   -
179   - spin_lock_irq(&dev->hardware_lock);
180   - dev->device_busy = 0;
181   - spin_unlock_irq(&dev->hardware_lock);
182   -
183   - tasklet_enable(&dev->tasklet);
184   -}
185   -
186   -static void ite8709_drop_hardware(struct ite8709_device *dev)
187   -{
188   - tasklet_disable(&dev->tasklet);
189   -
190   - spin_lock_irq(&dev->hardware_lock);
191   - dev->device_busy = 1;
192   - spin_unlock_irq(&dev->hardware_lock);
193   -
194   - ite8709_write_register(dev, IT8512_REG_RCR, 0);
195   - ite8709_write_register(dev, IT8512_REG_MSTCR,
196   - IT8512_MSTCR_RESET | IT8512_MSTCR_FIFOCLR);
197   -
198   - spin_lock_irq(&dev->hardware_lock);
199   - dev->device_busy = 0;
200   - spin_unlock_irq(&dev->hardware_lock);
201   -}
202   -
203   -static int ite8709_set_use_inc(void *data)
204   -{
205   - struct ite8709_device *dev;
206   - dev = data;
207   - if (dev->use_count == 0)
208   - ite8709_init_hardware(dev);
209   - dev->use_count++;
210   - return 0;
211   -}
212   -
213   -static void ite8709_set_use_dec(void *data)
214   -{
215   - struct ite8709_device *dev;
216   - dev = data;
217   - dev->use_count--;
218   - if (dev->use_count == 0)
219   - ite8709_drop_hardware(dev);
220   -}
221   -
222   -static void ite8709_add_read_queue(struct ite8709_device *dev, int flag,
223   - __u64 val)
224   -{
225   - int value;
226   -
227   - dprintk("add a %llu usec %s\n", val, flag ? "pulse" : "space");
228   -
229   - value = (val > PULSE_MASK) ? PULSE_MASK : val;
230   - if (flag)
231   - value |= PULSE_BIT;
232   -
233   - if (!lirc_buffer_full(dev->driver.rbuf)) {
234   - lirc_buffer_write(dev->driver.rbuf, (void *) &value);
235   - wake_up(&dev->driver.rbuf->wait_poll);
236   - }
237   -}
238   -
239   -static irqreturn_t ite8709_interrupt(int irq, void *dev_id)
240   -{
241   - unsigned char data;
242   - int iir, rfsr, i;
243   - int fifo = 0;
244   - char bit;
245   - struct timeval curr_tv;
246   -
247   - /* Bit duration in microseconds */
248   - const unsigned long bit_duration = 1000000ul / (115200 / CFG_BDR);
249   -
250   - struct ite8709_device *dev;
251   - dev = dev_id;
252   -
253   - /*
254   - * If device is busy, we simply discard data because we are in one of
255   - * these two cases : shutting down or rearming the device, so this
256   - * doesn't really matter and this avoids waiting too long in IRQ ctx
257   - */
258   - spin_lock(&dev->hardware_lock);
259   - if (dev->device_busy) {
260   - spin_unlock(&dev->hardware_lock);
261   - return IRQ_RETVAL(IRQ_HANDLED);
262   - }
263   -
264   - iir = ite8709_read(dev, ITE8709_IIR);
265   -
266   - switch (iir) {
267   - case ITE8709_IIR_RFOI:
268   - dprintk("fifo overrun, scheduling forced rearm just in case\n");
269   - dev->force_rearm = 1;
270   - tasklet_schedule(&dev->tasklet);
271   - spin_unlock(&dev->hardware_lock);
272   - return IRQ_RETVAL(IRQ_HANDLED);
273   -
274   - case ITE8709_IIR_RDAI:
275   - rfsr = ite8709_read(dev, ITE8709_RFSR);
276   - fifo = rfsr & ITE8709_RFSR_MASK;
277   - if (fifo > 32)
278   - fifo = 32;
279   - dprintk("iir: 0x%x rfsr: 0x%x fifo: %d\n", iir, rfsr, fifo);
280   -
281   - if (dev->rearmed) {
282   - do_gettimeofday(&curr_tv);
283   - dev->acc_space += 1000000ull
284   - * (curr_tv.tv_sec - dev->last_tv.tv_sec)
285   - + (curr_tv.tv_usec - dev->last_tv.tv_usec);
286   - dev->rearmed = 0;
287   - }
288   - for (i = 0; i < fifo; i++) {
289   - data = ite8709_read(dev, i+ITE8709_FIFO_START);
290   - data = ~data;
291   - /* Loop through */
292   - for (bit = 0; bit < 8; ++bit) {
293   - if ((data >> bit) & 1) {
294   - dev->acc_pulse += bit_duration;
295   - if (dev->lastbit == 0) {
296   - ite8709_add_read_queue(dev, 0,
297   - dev->acc_space);
298   - dev->acc_space = 0;
299   - }
300   - } else {
301   - dev->acc_space += bit_duration;
302   - if (dev->lastbit == 1) {
303   - ite8709_add_read_queue(dev, 1,
304   - dev->acc_pulse);
305   - dev->acc_pulse = 0;
306   - }
307   - }
308   - dev->lastbit = (data >> bit) & 1;
309   - }
310   - }
311   - ite8709_write(dev, ITE8709_RFSR, 0);
312   -
313   - if (dev->acc_space > CFG_TIMEOUT) {
314   - dprintk("scheduling rearm IRQ\n");
315   - do_gettimeofday(&dev->last_tv);
316   - dev->force_rearm = 0;
317   - tasklet_schedule(&dev->tasklet);
318   - }
319   -
320   - spin_unlock(&dev->hardware_lock);
321   - return IRQ_RETVAL(IRQ_HANDLED);
322   -
323   - default:
324   - /* not our irq */
325   - dprintk("unknown IRQ (shouldn't happen) !!\n");
326   - spin_unlock(&dev->hardware_lock);
327   - return IRQ_RETVAL(IRQ_NONE);
328   - }
329   -}
330   -
331   -static void ite8709_rearm_irq(unsigned long data)
332   -{
333   - struct ite8709_device *dev;
334   - unsigned long flags;
335   - dev = (struct ite8709_device *) data;
336   -
337   - spin_lock_irqsave(&dev->hardware_lock, flags);
338   - dev->device_busy = 1;
339   - spin_unlock_irqrestore(&dev->hardware_lock, flags);
340   -
341   - if (dev->force_rearm || dev->acc_space > CFG_TIMEOUT) {
342   - dprintk("rearming IRQ\n");
343   - ite8709_write_register(dev, IT8512_REG_RCR,
344   - IT8512_RCR_RXACT | CFG_DCR);
345   - ite8709_write_register(dev, IT8512_REG_MSTCR,
346   - CFG_FIFOTL | IT8512_MSTCR_FIFOCLR);
347   - ite8709_write_register(dev, IT8512_REG_RCR,
348   - IT8512_RCR_RXEN | IT8512_RCR_RXACT | CFG_DCR);
349   - if (!dev->force_rearm)
350   - dev->rearmed = 1;
351   - dev->force_rearm = 0;
352   - }
353   -
354   - spin_lock_irqsave(&dev->hardware_lock, flags);
355   - dev->device_busy = 0;
356   - spin_unlock_irqrestore(&dev->hardware_lock, flags);
357   -}
358   -
359   -static int ite8709_cleanup(struct ite8709_device *dev, int stage, int errno,
360   - char *msg)
361   -{
362   - if (msg != NULL)
363   - printk(KERN_ERR LIRC_DRIVER_NAME ": %s\n", msg);
364   -
365   - switch (stage) {
366   - case 6:
367   - if (dev->use_count > 0)
368   - ite8709_drop_hardware(dev);
369   - case 5:
370   - free_irq(dev->irq, dev);
371   - case 4:
372   - release_region(dev->io, 2);
373   - case 3:
374   - lirc_unregister_driver(dev->driver.minor);
375   - case 2:
376   - lirc_buffer_free(dev->driver.rbuf);
377   - kfree(dev->driver.rbuf);
378   - case 1:
379   - kfree(dev);
380   - case 0:
381   - ;
382   - }
383   -
384   - return errno;
385   -}
386   -
387   -static int __devinit ite8709_pnp_probe(struct pnp_dev *dev,
388   - const struct pnp_device_id *dev_id)
389   -{
390   - struct lirc_driver *driver;
391   - struct ite8709_device *ite8709_dev;
392   - int ret;
393   -
394   - /* Check resources validity */
395   - if (!pnp_irq_valid(dev, 0))
396   - return ite8709_cleanup(NULL, 0, -ENODEV, "invalid IRQ");
397   - if (!pnp_port_valid(dev, 2))
398   - return ite8709_cleanup(NULL, 0, -ENODEV, "invalid IO port");
399   -
400   - /* Allocate memory for device struct */
401   - ite8709_dev = kzalloc(sizeof(struct ite8709_device), GFP_KERNEL);
402   - if (ite8709_dev == NULL)
403   - return ite8709_cleanup(NULL, 0, -ENOMEM, "kzalloc failed");
404   - pnp_set_drvdata(dev, ite8709_dev);
405   -
406   - /* Initialize device struct */
407   - ite8709_dev->use_count = 0;
408   - ite8709_dev->irq = pnp_irq(dev, 0);
409   - ite8709_dev->io = pnp_port_start(dev, 2);
410   - ite8709_dev->hardware_lock =
411   - __SPIN_LOCK_UNLOCKED(ite8709_dev->hardware_lock);
412   - ite8709_dev->acc_pulse = 0;
413   - ite8709_dev->acc_space = 0;
414   - ite8709_dev->lastbit = 0;
415   - do_gettimeofday(&ite8709_dev->last_tv);
416   - tasklet_init(&ite8709_dev->tasklet, ite8709_rearm_irq,
417   - (long) ite8709_dev);
418   - ite8709_dev->force_rearm = 0;
419   - ite8709_dev->rearmed = 0;
420   - ite8709_dev->device_busy = 0;
421   -
422   - /* Initialize driver struct */
423   - driver = &ite8709_dev->driver;
424   - strcpy(driver->name, LIRC_DRIVER_NAME);
425   - driver->minor = -1;
426   - driver->code_length = sizeof(int) * 8;
427   - driver->sample_rate = 0;
428   - driver->features = LIRC_CAN_REC_MODE2;
429   - driver->data = ite8709_dev;
430   - driver->add_to_buf = NULL;
431   - driver->set_use_inc = ite8709_set_use_inc;
432   - driver->set_use_dec = ite8709_set_use_dec;
433   - driver->dev = &dev->dev;
434   - driver->owner = THIS_MODULE;
435   -
436   - /* Initialize LIRC buffer */
437   - driver->rbuf = kmalloc(sizeof(struct lirc_buffer), GFP_KERNEL);
438   - if (!driver->rbuf)
439   - return ite8709_cleanup(ite8709_dev, 1, -ENOMEM,
440   - "can't allocate lirc_buffer");
441   - if (lirc_buffer_init(driver->rbuf, BUF_CHUNK_SIZE, BUF_SIZE))
442   - return ite8709_cleanup(ite8709_dev, 1, -ENOMEM,
443   - "lirc_buffer_init() failed");
444   -
445   - /* Register LIRC driver */
446   - ret = lirc_register_driver(driver);
447   - if (ret < 0)
448   - return ite8709_cleanup(ite8709_dev, 2, ret,
449   - "lirc_register_driver() failed");
450   -
451   - /* Reserve I/O port access */
452   - if (!request_region(ite8709_dev->io, 2, LIRC_DRIVER_NAME))
453   - return ite8709_cleanup(ite8709_dev, 3, -EBUSY,
454   - "i/o port already in use");
455   -
456   - /* Reserve IRQ line */
457   - ret = request_irq(ite8709_dev->irq, ite8709_interrupt, 0,
458   - LIRC_DRIVER_NAME, ite8709_dev);
459   - if (ret < 0)
460   - return ite8709_cleanup(ite8709_dev, 4, ret,
461   - "IRQ already in use");
462   -
463   - /* Initialize hardware */
464   - ite8709_drop_hardware(ite8709_dev); /* Shutdown hw until first use */
465   -
466   - printk(KERN_INFO LIRC_DRIVER_NAME ": device found : irq=%d io=0x%x\n",
467   - ite8709_dev->irq, ite8709_dev->io);
468   -
469   - return 0;
470   -}
471   -
472   -static void __devexit ite8709_pnp_remove(struct pnp_dev *dev)
473   -{
474   - struct ite8709_device *ite8709_dev;
475   - ite8709_dev = pnp_get_drvdata(dev);
476   -
477   - ite8709_cleanup(ite8709_dev, 6, 0, NULL);
478   -
479   - printk(KERN_INFO LIRC_DRIVER_NAME ": device removed\n");
480   -}
481   -
482   -#ifdef CONFIG_PM
483   -static int ite8709_pnp_suspend(struct pnp_dev *dev, pm_message_t state)
484   -{
485   - struct ite8709_device *ite8709_dev;
486   - ite8709_dev = pnp_get_drvdata(dev);
487   -
488   - if (ite8709_dev->use_count > 0)
489   - ite8709_drop_hardware(ite8709_dev);
490   -
491   - return 0;
492   -}
493   -
494   -static int ite8709_pnp_resume(struct pnp_dev *dev)
495   -{
496   - struct ite8709_device *ite8709_dev;
497   - ite8709_dev = pnp_get_drvdata(dev);
498   -
499   - if (ite8709_dev->use_count > 0)
500   - ite8709_init_hardware(ite8709_dev);
501   -
502   - return 0;
503   -}
504   -#else
505   -#define ite8709_pnp_suspend NULL
506   -#define ite8709_pnp_resume NULL
507   -#endif
508   -
509   -static const struct pnp_device_id pnp_dev_table[] = {
510   - {"ITE8709", 0},
511   - {}
512   -};
513   -
514   -MODULE_DEVICE_TABLE(pnp, pnp_dev_table);
515   -
516   -static struct pnp_driver ite8709_pnp_driver = {
517   - .name = LIRC_DRIVER_NAME,
518   - .probe = ite8709_pnp_probe,
519   - .remove = __devexit_p(ite8709_pnp_remove),
520   - .suspend = ite8709_pnp_suspend,
521   - .resume = ite8709_pnp_resume,
522   - .id_table = pnp_dev_table,
523   -};
524   -
525   -static int __init ite8709_init_module(void)
526   -{
527   - return pnp_register_driver(&ite8709_pnp_driver);
528   -}
529   -module_init(ite8709_init_module);
530   -
531   -static void __exit ite8709_cleanup_module(void)
532   -{
533   - pnp_unregister_driver(&ite8709_pnp_driver);
534   -}
535   -module_exit(ite8709_cleanup_module);
536   -
537   -MODULE_DESCRIPTION("LIRC driver for ITE8709 CIR port");
538   -MODULE_AUTHOR("Grégory Lardière");
539   -MODULE_LICENSE("GPL");
540   -
541   -module_param(debug, bool, S_IRUGO | S_IWUSR);
542   -MODULE_PARM_DESC(debug, "Enable debugging messages");