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-rw-r--r--drivers/char/qtronix.c605
1 files changed, 0 insertions, 605 deletions
diff --git a/drivers/char/qtronix.c b/drivers/char/qtronix.c
deleted file mode 100644
index 9d134e98d2a0..000000000000
--- a/drivers/char/qtronix.c
+++ /dev/null
@@ -1,605 +0,0 @@
1/*
2 *
3 * BRIEF MODULE DESCRIPTION
4 * Qtronix 990P infrared keyboard driver.
5 *
6 *
7 * Copyright 2001 MontaVista Software Inc.
8 * Author: MontaVista Software, Inc.
9 * ppopov@mvista.com or source@mvista.com
10 *
11 *
12 * The bottom portion of this driver was take from
13 * pc_keyb.c Please see that file for copyrights.
14 *
15 * This program is free software; you can redistribute it and/or modify it
16 * under the terms of the GNU General Public License as published by the
17 * Free Software Foundation; either version 2 of the License, or (at your
18 * option) any later version.
19 *
20 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
21 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
22 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
23 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
26 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
27 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 *
31 * You should have received a copy of the GNU General Public License along
32 * with this program; if not, write to the Free Software Foundation, Inc.,
33 * 675 Mass Ave, Cambridge, MA 02139, USA.
34 */
35
36
37/*
38 * NOTE:
39 *
40 * This driver has only been tested with the Consumer IR
41 * port of the ITE 8172 system controller.
42 *
43 * You do not need this driver if you are using the ps/2 or
44 * USB adapter that the keyboard ships with. You only need
45 * this driver if your board has a IR port and the keyboard
46 * data is being sent directly to the IR. In that case,
47 * you also need some low-level IR support. See it8172_cir.c.
48 *
49 */
50
51#ifdef CONFIG_QTRONIX_KEYBOARD
52
53#include <linux/module.h>
54#include <linux/types.h>
55#include <linux/pci.h>
56#include <linux/kernel.h>
57
58#include <asm/it8172/it8172.h>
59#include <asm/it8172/it8172_int.h>
60#include <asm/it8172/it8172_cir.h>
61
62#include <linux/spinlock.h>
63#include <linux/sched.h>
64#include <linux/interrupt.h>
65#include <linux/tty.h>
66#include <linux/mm.h>
67#include <linux/signal.h>
68#include <linux/init.h>
69#include <linux/kbd_ll.h>
70#include <linux/delay.h>
71#include <linux/poll.h>
72#include <linux/miscdevice.h>
73#include <linux/slab.h>
74#include <linux/kbd_kern.h>
75#include <linux/smp_lock.h>
76#include <asm/io.h>
77#include <linux/pc_keyb.h>
78
79#include <asm/keyboard.h>
80#include <linux/bitops.h>
81#include <asm/uaccess.h>
82#include <asm/irq.h>
83#include <asm/system.h>
84
85#define leading1 0
86#define leading2 0xF
87
88#define KBD_CIR_PORT 0
89#define AUX_RECONNECT 170 /* scancode when ps2 device is plugged (back) in */
90
91static int data_index;
92struct cir_port *cir;
93static unsigned char kbdbytes[5];
94static unsigned char cir_data[32]; /* we only need 16 chars */
95
96static void kbd_int_handler(int irq, void *dev_id, struct pt_regs *regs);
97static int handle_data(unsigned char *p_data);
98static inline void handle_mouse_event(unsigned char scancode);
99static inline void handle_keyboard_event(unsigned char scancode, int down);
100static int __init psaux_init(void);
101
102static struct aux_queue *queue; /* Mouse data buffer. */
103static int aux_count = 0;
104
105/*
106 * Keys accessed through the 'Fn' key
107 * The Fn key does not produce a key-up sequence. So, the first
108 * time the user presses it, it will be key-down event. The key
109 * stays down until the user presses it again.
110 */
111#define NUM_FN_KEYS 56
112static unsigned char fn_keys[NUM_FN_KEYS] = {
113 0,0,0,0,0,0,0,0, /* 0 7 */
114 8,9,10,93,0,0,0,0, /* 8 15 */
115 0,0,0,0,0,0,0,5, /* 16 23 */
116 6,7,91,0,0,0,0,0, /* 24 31 */
117 0,0,0,0,0,2,3,4, /* 32 39 */
118 92,0,0,0,0,0,0,0, /* 40 47 */
119 0,0,0,0,11,0,94,95 /* 48 55 */
120
121};
122
123void __init init_qtronix_990P_kbd(void)
124{
125 int retval;
126
127 cir = (struct cir_port *)kmalloc(sizeof(struct cir_port), GFP_KERNEL);
128 if (!cir) {
129 printk("Unable to initialize Qtronix keyboard\n");
130 return;
131 }
132
133 /*
134 * revisit
135 * this should be programmable, somehow by the, by the user.
136 */
137 cir->port = KBD_CIR_PORT;
138 cir->baud_rate = 0x1d;
139 cir->rdwos = 0;
140 cir->rxdcr = 0x3;
141 cir->hcfs = 0;
142 cir->fifo_tl = 0;
143 cir->cfq = 0x1d;
144 cir_port_init(cir);
145
146 retval = request_irq(IT8172_CIR0_IRQ, kbd_int_handler,
147 (unsigned long )(IRQF_DISABLED|IRQF_SHARED),
148 (const char *)"Qtronix IR Keyboard", (void *)cir);
149
150 if (retval) {
151 printk("unable to allocate cir %d irq %d\n",
152 cir->port, IT8172_CIR0_IRQ);
153 }
154#ifdef CONFIG_PSMOUSE
155 psaux_init();
156#endif
157}
158
159static inline unsigned char BitReverse(unsigned short key)
160{
161 unsigned char rkey = 0;
162 rkey |= (key & 0x1) << 7;
163 rkey |= (key & 0x2) << 5;
164 rkey |= (key & 0x4) << 3;
165 rkey |= (key & 0x8) << 1;
166 rkey |= (key & 0x10) >> 1;
167 rkey |= (key & 0x20) >> 3;
168 rkey |= (key & 0x40) >> 5;
169 rkey |= (key & 0x80) >> 7;
170 return rkey;
171
172}
173
174
175static inline u_int8_t UpperByte(u_int8_t data)
176{
177 return (data >> 4);
178}
179
180
181static inline u_int8_t LowerByte(u_int8_t data)
182{
183 return (data & 0xF);
184}
185
186
187int CheckSumOk(u_int8_t byte1, u_int8_t byte2,
188 u_int8_t byte3, u_int8_t byte4, u_int8_t byte5)
189{
190 u_int8_t CheckSum;
191
192 CheckSum = (byte1 & 0x0F) + byte2 + byte3 + byte4 + byte5;
193 if ( LowerByte(UpperByte(CheckSum) + LowerByte(CheckSum)) != UpperByte(byte1) )
194 return 0;
195 else
196 return 1;
197}
198
199
200static void kbd_int_handler(int irq, void *dev_id, struct pt_regs *regs)
201{
202 struct cir_port *cir;
203 int j;
204 unsigned char int_status;
205
206 cir = (struct cir_port *)dev_id;
207 int_status = get_int_status(cir);
208 if (int_status & 0x4) {
209 clear_fifo(cir);
210 return;
211 }
212
213 while (cir_get_rx_count(cir)) {
214
215 cir_data[data_index] = cir_read_data(cir);
216
217 if (data_index == 0) {/* expecting first byte */
218 if (cir_data[data_index] != leading1) {
219 //printk("!leading byte %x\n", cir_data[data_index]);
220 set_rx_active(cir);
221 clear_fifo(cir);
222 continue;
223 }
224 }
225 if (data_index == 1) {
226 if ((cir_data[data_index] & 0xf) != leading2) {
227 set_rx_active(cir);
228 data_index = 0; /* start over */
229 clear_fifo(cir);
230 continue;
231 }
232 }
233
234 if ( (cir_data[data_index] == 0xff)) { /* last byte */
235 //printk("data_index %d\n", data_index);
236 set_rx_active(cir);
237#if 0
238 for (j=0; j<=data_index; j++) {
239 printk("rx_data %d: %x\n", j, cir_data[j]);
240 }
241#endif
242 data_index = 0;
243 handle_data(cir_data);
244 return;
245 }
246 else if (data_index>16) {
247 set_rx_active(cir);
248#if 0
249 printk("warning: data_index %d\n", data_index);
250 for (j=0; j<=data_index; j++) {
251 printk("rx_data %d: %x\n", j, cir_data[j]);
252 }
253#endif
254 data_index = 0;
255 clear_fifo(cir);
256 return;
257 }
258 data_index++;
259 }
260}
261
262
263#define NUM_KBD_BYTES 5
264static int handle_data(unsigned char *p_data)
265{
266 u_int32_t bit_bucket;
267 u_int32_t i, j;
268 u_int32_t got_bits, next_byte;
269 int down = 0;
270
271 /* Reorganize the bit stream */
272 for (i=0; i<16; i++)
273 p_data[i] = BitReverse(~p_data[i]);
274
275 /*
276 * We've already previously checked that p_data[0]
277 * is equal to leading1 and that (p_data[1] & 0xf)
278 * is equal to leading2. These twelve bits are the
279 * leader code. We can now throw them away (the 12
280 * bits) and continue parsing the stream.
281 */
282 bit_bucket = p_data[1] << 12;
283 got_bits = 4;
284 next_byte = 2;
285
286 /*
287 * Process four bits at a time
288 */
289 for (i=0; i<NUM_KBD_BYTES; i++) {
290
291 kbdbytes[i]=0;
292
293 for (j=0; j<8; j++) /* 8 bits per byte */
294 {
295 if (got_bits < 4) {
296 bit_bucket |= (p_data[next_byte++] << (8 - got_bits));
297 got_bits += 8;
298 }
299
300 if ((bit_bucket & 0xF000) == 0x8000) {
301 /* Convert 1000b to 1 */
302 kbdbytes[i] = 0x80 | (kbdbytes[i] >> 1);
303 got_bits -= 4;
304 bit_bucket = bit_bucket << 4;
305 }
306 else if ((bit_bucket & 0xC000) == 0x8000) {
307 /* Convert 10b to 0 */
308 kbdbytes[i] = kbdbytes[i] >> 1;
309 got_bits -= 2;
310 bit_bucket = bit_bucket << 2;
311 }
312 else {
313 /* bad serial stream */
314 return 1;
315 }
316
317 if (next_byte > 16) {
318 //printk("error: too many bytes\n");
319 return 1;
320 }
321 }
322 }
323
324
325 if (!CheckSumOk(kbdbytes[0], kbdbytes[1],
326 kbdbytes[2], kbdbytes[3], kbdbytes[4])) {
327 //printk("checksum failed\n");
328 return 1;
329 }
330
331 if (kbdbytes[1] & 0x08) {
332 //printk("m: %x %x %x\n", kbdbytes[1], kbdbytes[2], kbdbytes[3]);
333 handle_mouse_event(kbdbytes[1]);
334 handle_mouse_event(kbdbytes[2]);
335 handle_mouse_event(kbdbytes[3]);
336 }
337 else {
338 if (kbdbytes[2] == 0) down = 1;
339#if 0
340 if (down)
341 printk("down %d\n", kbdbytes[3]);
342 else
343 printk("up %d\n", kbdbytes[3]);
344#endif
345 handle_keyboard_event(kbdbytes[3], down);
346 }
347 return 0;
348}
349
350
351DEFINE_SPINLOCK(kbd_controller_lock);
352static unsigned char handle_kbd_event(void);
353
354
355int kbd_setkeycode(unsigned int scancode, unsigned int keycode)
356{
357 printk("kbd_setkeycode scancode %x keycode %x\n", scancode, keycode);
358 return 0;
359}
360
361int kbd_getkeycode(unsigned int scancode)
362{
363 return scancode;
364}
365
366
367int kbd_translate(unsigned char scancode, unsigned char *keycode,
368 char raw_mode)
369{
370 static int prev_scancode = 0;
371
372 if (scancode == 0x00 || scancode == 0xff) {
373 prev_scancode = 0;
374 return 0;
375 }
376
377 /* todo */
378 if (!prev_scancode && scancode == 160) { /* Fn key down */
379 //printk("Fn key down\n");
380 prev_scancode = 160;
381 return 0;
382 }
383 else if (prev_scancode && scancode == 160) { /* Fn key up */
384 //printk("Fn key up\n");
385 prev_scancode = 0;
386 return 0;
387 }
388
389 /* todo */
390 if (prev_scancode == 160) {
391 if (scancode <= NUM_FN_KEYS) {
392 *keycode = fn_keys[scancode];
393 //printk("fn keycode %d\n", *keycode);
394 }
395 else
396 return 0;
397 }
398 else if (scancode <= 127) {
399 *keycode = scancode;
400 }
401 else
402 return 0;
403
404
405 return 1;
406}
407
408char kbd_unexpected_up(unsigned char keycode)
409{
410 //printk("kbd_unexpected_up\n");
411 return 0;
412}
413
414static unsigned char kbd_exists = 1;
415
416static inline void handle_keyboard_event(unsigned char scancode, int down)
417{
418 kbd_exists = 1;
419 handle_scancode(scancode, down);
420 tasklet_schedule(&keyboard_tasklet);
421}
422
423
424void kbd_leds(unsigned char leds)
425{
426}
427
428/* dummy */
429void kbd_init_hw(void)
430{
431}
432
433
434
435static inline void handle_mouse_event(unsigned char scancode)
436{
437 if(scancode == AUX_RECONNECT){
438 queue->head = queue->tail = 0; /* Flush input queue */
439 // __aux_write_ack(AUX_ENABLE_DEV); /* ping the mouse :) */
440 return;
441 }
442
443 if (aux_count) {
444 int head = queue->head;
445
446 queue->buf[head] = scancode;
447 head = (head + 1) & (AUX_BUF_SIZE-1);
448 if (head != queue->tail) {
449 queue->head = head;
450 kill_fasync(&queue->fasync, SIGIO, POLL_IN);
451 wake_up_interruptible(&queue->proc_list);
452 }
453 }
454}
455
456static unsigned char get_from_queue(void)
457{
458 unsigned char result;
459 unsigned long flags;
460
461 spin_lock_irqsave(&kbd_controller_lock, flags);
462 result = queue->buf[queue->tail];
463 queue->tail = (queue->tail + 1) & (AUX_BUF_SIZE-1);
464 spin_unlock_irqrestore(&kbd_controller_lock, flags);
465 return result;
466}
467
468
469static inline int queue_empty(void)
470{
471 return queue->head == queue->tail;
472}
473
474static int fasync_aux(int fd, struct file *filp, int on)
475{
476 int retval;
477
478 //printk("fasync_aux\n");
479 retval = fasync_helper(fd, filp, on, &queue->fasync);
480 if (retval < 0)
481 return retval;
482 return 0;
483}
484
485
486/*
487 * Random magic cookie for the aux device
488 */
489#define AUX_DEV ((void *)queue)
490
491static int release_aux(struct inode * inode, struct file * file)
492{
493 fasync_aux(-1, file, 0);
494 aux_count--;
495 return 0;
496}
497
498static int open_aux(struct inode * inode, struct file * file)
499{
500 if (aux_count++) {
501 return 0;
502 }
503 queue->head = queue->tail = 0; /* Flush input queue */
504 return 0;
505}
506
507/*
508 * Put bytes from input queue to buffer.
509 */
510
511static ssize_t read_aux(struct file * file, char * buffer,
512 size_t count, loff_t *ppos)
513{
514 DECLARE_WAITQUEUE(wait, current);
515 ssize_t i = count;
516 unsigned char c;
517
518 if (queue_empty()) {
519 if (file->f_flags & O_NONBLOCK)
520 return -EAGAIN;
521 add_wait_queue(&queue->proc_list, &wait);
522repeat:
523 set_current_state(TASK_INTERRUPTIBLE);
524 if (queue_empty() && !signal_pending(current)) {
525 schedule();
526 goto repeat;
527 }
528 current->state = TASK_RUNNING;
529 remove_wait_queue(&queue->proc_list, &wait);
530 }
531 while (i > 0 && !queue_empty()) {
532 c = get_from_queue();
533 put_user(c, buffer++);
534 i--;
535 }
536 if (count-i) {
537 struct inode *inode = file->f_dentry->d_inode;
538 inode->i_atime = current_fs_time(inode->i_sb);
539 return count-i;
540 }
541 if (signal_pending(current))
542 return -ERESTARTSYS;
543 return 0;
544}
545
546/*
547 * Write to the aux device.
548 */
549
550static ssize_t write_aux(struct file * file, const char * buffer,
551 size_t count, loff_t *ppos)
552{
553 /*
554 * The ITE boards this was tested on did not have the
555 * transmit wires connected.
556 */
557 return count;
558}
559
560static unsigned int aux_poll(struct file *file, poll_table * wait)
561{
562 poll_wait(file, &queue->proc_list, wait);
563 if (!queue_empty())
564 return POLLIN | POLLRDNORM;
565 return 0;
566}
567
568struct file_operations psaux_fops = {
569 .read = read_aux,
570 .write = write_aux,
571 .poll = aux_poll,
572 .open = open_aux,
573 .release = release_aux,
574 .fasync = fasync_aux,
575};
576
577/*
578 * Initialize driver.
579 */
580static struct miscdevice psaux_mouse = {
581 PSMOUSE_MINOR, "psaux", &psaux_fops
582};
583
584static int __init psaux_init(void)
585{
586 int retval;
587
588 retval = misc_register(&psaux_mouse);
589 if(retval < 0)
590 return retval;
591
592 queue = (struct aux_queue *) kmalloc(sizeof(*queue), GFP_KERNEL);
593 if (!queue) {
594 misc_deregister(&psaux_mouse);
595 return -ENOMEM;
596 }
597
598 memset(queue, 0, sizeof(*queue));
599 queue->head = queue->tail = 0;
600 init_waitqueue_head(&queue->proc_list);
601
602 return 0;
603}
604module_init(init_qtronix_990P_kbd);
605#endif
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