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comparison src/video/fbcon/SDL_fbevents.c @ 59:b685c94f8db7

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Ryan's IMPS/2 mouse fix
author Sam Lantinga <slouken@lokigames.com>
date Mon, 11 Jun 2001 15:48:32 +0000
parents 4f6c5f021323
children e093bbc72ab9
comparison
equal deleted inserted replaced
58:bd6b0a910a65 59:b685c94f8db7
395 closedir(proc); 395 closedir(proc);
396 } 396 }
397 return available; 397 return available;
398 } 398 }
399 399
400
401 /* rcg06112001 Set up IMPS/2 mode, if possible. This gives
402 * us access to the mousewheel, etc. Returns zero if
403 * writes to device failed, but you still need to query the
404 * device to see which mode it's actually in.
405 */
406 static int set_imps2_mode(int fd)
407 {
408 /* If you wanted to control the mouse mode (and we do :) ) ...
409 Set IMPS/2 protocol:
410 {0xf3,200,0xf3,100,0xf3,80}
411 Reset mouse device:
412 {0xFF}
413 */
414 Uint8 set_imps2[] = {0xf3, 200, 0xf3, 100, 0xf3, 80};
415 Uint8 reset = 0xff;
416 fd_set fdset;
417 struct timeval tv;
418 int retval = 0;
419
420 if ( write(fd, &set_imps2, sizeof(set_imps2)) == sizeof(set_imps2) ) {
421 if (write(fd, &reset, sizeof (reset)) == sizeof (reset) ) {
422 retval = 1;
423 }
424 }
425
426 /* Get rid of any chatter from the above */
427 FD_ZERO(&fdset);
428 FD_SET(fd, &fdset);
429 tv.tv_sec = 0;
430 tv.tv_usec = 0;
431 while ( select(fd+1, &fdset, 0, 0, &tv) > 0 ) {
432 char temp[32];
433 read(fd, temp, sizeof(temp));
434 }
435
436 return retval;
437 }
438
439
400 /* Returns true if the mouse uses the IMPS/2 protocol */ 440 /* Returns true if the mouse uses the IMPS/2 protocol */
401 static int detect_imps2(int fd) 441 static int detect_imps2(int fd)
402 { 442 {
403 int imps2; 443 int imps2;
404 444
405 imps2 = 0; 445 imps2 = 0;
446
447 /* rcg06112001 Attempt to set IMPS/2 mode first, even with envr var... */
448 set_imps2_mode(fd);
449
406 if ( getenv("SDL_MOUSEDEV_IMPS2") ) { 450 if ( getenv("SDL_MOUSEDEV_IMPS2") ) {
407 imps2 = 1; 451 imps2 = 1;
408 } 452 }
409 if ( ! imps2 ) { 453 if ( ! imps2 ) {
410 unsigned char query_ps2 = 0xF2; 454 Uint8 query_ps2 = 0xF2;
411 fd_set fdset; 455 fd_set fdset;
412 struct timeval tv; 456 struct timeval tv;
413
414 457
415 /* Get rid of any mouse motion noise */ 458 /* Get rid of any mouse motion noise */
416 FD_ZERO(&fdset); 459 FD_ZERO(&fdset);
417 FD_SET(fd, &fdset); 460 FD_SET(fd, &fdset);
418 tv.tv_sec = 0; 461 tv.tv_sec = 0;
420 while ( select(fd+1, &fdset, 0, 0, &tv) > 0 ) { 463 while ( select(fd+1, &fdset, 0, 0, &tv) > 0 ) {
421 char temp[32]; 464 char temp[32];
422 read(fd, temp, sizeof(temp)); 465 read(fd, temp, sizeof(temp));
423 } 466 }
424 467
425 /* Query for the type of mouse protocol */ 468 /* Query for the type of mouse protocol */
426 if ( write(fd, &query_ps2, 1) == 1 ) { 469 if ( write(fd, &query_ps2, sizeof (query_ps2)) == sizeof (query_ps2)) {
427 unsigned char ch = 0; 470 Uint8 ch = 0;
428 471
429 /* If you wanted to control the mouse mode:
430 Set IMPS/2 protocol:
431 {0xf3,200,0xf3,100,0xf3,80}
432 Reset mouse device:
433 {0xFF}
434 */
435 /* Get the mouse protocol response */ 472 /* Get the mouse protocol response */
436 do { 473 do {
437 FD_ZERO(&fdset); 474 FD_ZERO(&fdset);
438 FD_SET(fd, &fdset); 475 FD_SET(fd, &fdset);
439 tv.tv_sec = 1; 476 tv.tv_sec = 1;
440 tv.tv_usec = 0; 477 tv.tv_usec = 0;
441 if ( select(fd+1, &fdset, 0, 0, &tv) < 1 ) { 478 if ( select(fd+1, &fdset, 0, 0, &tv) < 1 ) {
442 break; 479 break;
443 } 480 }
444 } while ( (read(fd, &ch, 1) == 1) && 481 } while ( (read(fd, &ch, sizeof (ch)) == sizeof (ch)) &&
445 ((ch == 0xFA) || (ch == 0xAA)) ); 482 ((ch == 0xFA) || (ch == 0xAA)) );
446 483
447 /* Experimental values (Logitech wheelmouse) */ 484 /* Experimental values (Logitech wheelmouse) */
448 #ifdef DEBUG_MOUSE 485 #ifdef DEBUG_MOUSE
449 fprintf(stderr, "Last mouse mode: 0x%x\n", ch); 486 fprintf(stderr, "Last mouse mode: 0x%x\n", ch);
500 } 537 }
501 } 538 }
502 } 539 }
503 /* Now try to use the new HID unified mouse device */ 540 /* Now try to use the new HID unified mouse device */
504 if ( mouse_fd < 0 ) { 541 if ( mouse_fd < 0 ) {
505 mouse_fd = open("/dev/input/mice", O_RDONLY, 0); 542 mouse_fd = open("/dev/input/mice", O_RDWR, 0);
506 if ( mouse_fd >= 0 ) { 543 if (mouse_fd < 0) {
507 mouse_drv = MOUSE_IMPS2; 544 mouse_fd = open("/dev/input/mice", O_RDONLY, 0);
545 }
546 if (mouse_fd >= 0) {
547 if (detect_imps2(mouse_fd)) {
548 mouse_drv = MOUSE_IMPS2;
549 } else {
550 mouse_drv = MOUSE_PS2;
551 }
508 } 552 }
509 } 553 }
510 /* Now try to use a modern PS/2 port mouse */ 554 /* Now try to use a modern PS/2 port mouse */
511 if ( mouse_fd < 0 ) { 555 if ( mouse_fd < 0 ) {
512 mouse_fd = open("/dev/psaux", O_RDWR, 0); 556 mouse_fd = open("/dev/psaux", O_RDWR, 0);