Commit | Line | Data |
---|---|---|
c04cb856 | 1 | /* |
c04cb856 MS |
2 | * Atari Keyboard driver for 680x0 Linux |
3 | * | |
4 | * This file is subject to the terms and conditions of the GNU General Public | |
5 | * License. See the file COPYING in the main directory of this archive | |
6 | * for more details. | |
7 | */ | |
8 | ||
9 | /* | |
10 | * Atari support by Robert de Vries | |
11 | * enhanced by Bjoern Brauel and Roman Hodek | |
3d83a2a5 GU |
12 | * |
13 | * 2.6 and input cleanup (removed autorepeat stuff) for 2.6.21 | |
14 | * 06/07 Michael Schmitz | |
c04cb856 MS |
15 | */ |
16 | ||
88f8bb78 | 17 | #include <linux/module.h> |
c04cb856 MS |
18 | #include <linux/sched.h> |
19 | #include <linux/kernel.h> | |
20 | #include <linux/interrupt.h> | |
21 | #include <linux/errno.h> | |
22 | #include <linux/keyboard.h> | |
23 | #include <linux/delay.h> | |
24 | #include <linux/timer.h> | |
25 | #include <linux/kd.h> | |
26 | #include <linux/random.h> | |
27 | #include <linux/init.h> | |
28 | #include <linux/kbd_kern.h> | |
29 | ||
30 | #include <asm/atariints.h> | |
31 | #include <asm/atarihw.h> | |
32 | #include <asm/atarikb.h> | |
33 | #include <asm/atari_joystick.h> | |
34 | #include <asm/irq.h> | |
35 | ||
c04cb856 MS |
36 | extern unsigned int keymap_count; |
37 | ||
38 | /* Hook for MIDI serial driver */ | |
39 | void (*atari_MIDI_interrupt_hook) (void); | |
40 | /* Hook for mouse driver */ | |
41 | void (*atari_mouse_interrupt_hook) (char *); | |
42 | /* Hook for keyboard inputdev driver */ | |
43 | void (*atari_input_keyboard_interrupt_hook) (unsigned char, char); | |
44 | /* Hook for mouse inputdev driver */ | |
45 | void (*atari_input_mouse_interrupt_hook) (char *); | |
88f8bb78 AV |
46 | EXPORT_SYMBOL(atari_mouse_interrupt_hook); |
47 | EXPORT_SYMBOL(atari_input_keyboard_interrupt_hook); | |
48 | EXPORT_SYMBOL(atari_input_mouse_interrupt_hook); | |
c04cb856 MS |
49 | |
50 | /* variables for IKBD self test: */ | |
51 | ||
52 | /* state: 0: off; >0: in progress; >1: 0xf1 received */ | |
53 | static volatile int ikbd_self_test; | |
54 | /* timestamp when last received a char */ | |
55 | static volatile unsigned long self_test_last_rcv; | |
56 | /* bitmap of keys reported as broken */ | |
57 | static unsigned long broken_keys[128/(sizeof(unsigned long)*8)] = { 0, }; | |
58 | ||
59 | #define BREAK_MASK (0x80) | |
60 | ||
61 | /* | |
62 | * ++roman: The following changes were applied manually: | |
63 | * | |
64 | * - The Alt (= Meta) key works in combination with Shift and | |
65 | * Control, e.g. Alt+Shift+a sends Meta-A (0xc1), Alt+Control+A sends | |
66 | * Meta-Ctrl-A (0x81) ... | |
67 | * | |
68 | * - The parentheses on the keypad send '(' and ')' with all | |
69 | * modifiers (as would do e.g. keypad '+'), but they cannot be used as | |
70 | * application keys (i.e. sending Esc O c). | |
71 | * | |
72 | * - HELP and UNDO are mapped to be F21 and F24, resp, that send the | |
73 | * codes "\E[M" and "\E[P". (This is better than the old mapping to | |
74 | * F11 and F12, because these codes are on Shift+F1/2 anyway.) This | |
75 | * way, applications that allow their own keyboard mappings | |
76 | * (e.g. tcsh, X Windows) can be configured to use them in the way | |
77 | * the label suggests (providing help or undoing). | |
78 | * | |
79 | * - Console switching is done with Alt+Fx (consoles 1..10) and | |
80 | * Shift+Alt+Fx (consoles 11..20). | |
81 | * | |
82 | * - The misc. special function implemented in the kernel are mapped | |
83 | * to the following key combinations: | |
84 | * | |
85 | * ClrHome -> Home/Find | |
86 | * Shift + ClrHome -> End/Select | |
87 | * Shift + Up -> Page Up | |
88 | * Shift + Down -> Page Down | |
89 | * Alt + Help -> show system status | |
90 | * Shift + Help -> show memory info | |
91 | * Ctrl + Help -> show registers | |
92 | * Ctrl + Alt + Del -> Reboot | |
93 | * Alt + Undo -> switch to last console | |
94 | * Shift + Undo -> send interrupt | |
95 | * Alt + Insert -> stop/start output (same as ^S/^Q) | |
96 | * Alt + Up -> Scroll back console (if implemented) | |
97 | * Alt + Down -> Scroll forward console (if implemented) | |
98 | * Alt + CapsLock -> NumLock | |
99 | * | |
100 | * ++Andreas: | |
101 | * | |
102 | * - Help mapped to K_HELP | |
103 | * - Undo mapped to K_UNDO (= K_F246) | |
104 | * - Keypad Left/Right Parenthesis mapped to new K_PPAREN[LR] | |
105 | */ | |
106 | ||
c04cb856 MS |
107 | typedef enum kb_state_t { |
108 | KEYBOARD, AMOUSE, RMOUSE, JOYSTICK, CLOCK, RESYNC | |
109 | } KB_STATE_T; | |
110 | ||
111 | #define IS_SYNC_CODE(sc) ((sc) >= 0x04 && (sc) <= 0xfb) | |
112 | ||
113 | typedef struct keyboard_state { | |
114 | unsigned char buf[6]; | |
115 | int len; | |
116 | KB_STATE_T state; | |
117 | } KEYBOARD_STATE; | |
118 | ||
119 | KEYBOARD_STATE kb_state; | |
120 | ||
c04cb856 MS |
121 | /* ++roman: If a keyboard overrun happened, we can't tell in general how much |
122 | * bytes have been lost and in which state of the packet structure we are now. | |
123 | * This usually causes keyboards bytes to be interpreted as mouse movements | |
124 | * and vice versa, which is very annoying. It seems better to throw away some | |
125 | * bytes (that are usually mouse bytes) than to misinterpret them. Therefor I | |
126 | * introduced the RESYNC state for IKBD data. In this state, the bytes up to | |
127 | * one that really looks like a key event (0x04..0xf2) or the start of a mouse | |
128 | * packet (0xf8..0xfb) are thrown away, but at most 2 bytes. This at least | |
129 | * speeds up the resynchronization of the event structure, even if maybe a | |
130 | * mouse movement is lost. However, nothing is perfect. For bytes 0x01..0x03, | |
131 | * it's really hard to decide whether they're mouse or keyboard bytes. Since | |
132 | * overruns usually occur when moving the Atari mouse rapidly, they're seen as | |
133 | * mouse bytes here. If this is wrong, only a make code of the keyboard gets | |
134 | * lost, which isn't too bad. Loosing a break code would be disastrous, | |
135 | * because then the keyboard repeat strikes... | |
136 | */ | |
137 | ||
138 | static irqreturn_t atari_keyboard_interrupt(int irq, void *dummy) | |
139 | { | |
140 | u_char acia_stat; | |
141 | int scancode; | |
142 | int break_flag; | |
143 | ||
144 | repeat: | |
145 | if (acia.mid_ctrl & ACIA_IRQ) | |
146 | if (atari_MIDI_interrupt_hook) | |
147 | atari_MIDI_interrupt_hook(); | |
148 | acia_stat = acia.key_ctrl; | |
149 | /* check out if the interrupt came from this ACIA */ | |
150 | if (!((acia_stat | acia.mid_ctrl) & ACIA_IRQ)) | |
151 | return IRQ_HANDLED; | |
152 | ||
153 | if (acia_stat & ACIA_OVRN) { | |
154 | /* a very fast typist or a slow system, give a warning */ | |
155 | /* ...happens often if interrupts were disabled for too long */ | |
156 | printk(KERN_DEBUG "Keyboard overrun\n"); | |
157 | scancode = acia.key_data; | |
c04cb856 MS |
158 | if (ikbd_self_test) |
159 | /* During self test, don't do resyncing, just process the code */ | |
160 | goto interpret_scancode; | |
161 | else if (IS_SYNC_CODE(scancode)) { | |
162 | /* This code seem already to be the start of a new packet or a | |
163 | * single scancode */ | |
164 | kb_state.state = KEYBOARD; | |
165 | goto interpret_scancode; | |
166 | } else { | |
167 | /* Go to RESYNC state and skip this byte */ | |
168 | kb_state.state = RESYNC; | |
169 | kb_state.len = 1; /* skip max. 1 another byte */ | |
170 | goto repeat; | |
171 | } | |
172 | } | |
173 | ||
174 | if (acia_stat & ACIA_RDRF) { | |
175 | /* received a character */ | |
176 | scancode = acia.key_data; /* get it or reset the ACIA, I'll get it! */ | |
177 | tasklet_schedule(&keyboard_tasklet); | |
178 | interpret_scancode: | |
179 | switch (kb_state.state) { | |
180 | case KEYBOARD: | |
181 | switch (scancode) { | |
182 | case 0xF7: | |
183 | kb_state.state = AMOUSE; | |
184 | kb_state.len = 0; | |
185 | break; | |
186 | ||
187 | case 0xF8: | |
188 | case 0xF9: | |
189 | case 0xFA: | |
190 | case 0xFB: | |
191 | kb_state.state = RMOUSE; | |
192 | kb_state.len = 1; | |
193 | kb_state.buf[0] = scancode; | |
194 | break; | |
195 | ||
196 | case 0xFC: | |
197 | kb_state.state = CLOCK; | |
198 | kb_state.len = 0; | |
199 | break; | |
200 | ||
201 | case 0xFE: | |
202 | case 0xFF: | |
203 | kb_state.state = JOYSTICK; | |
204 | kb_state.len = 1; | |
205 | kb_state.buf[0] = scancode; | |
206 | break; | |
207 | ||
208 | case 0xF1: | |
209 | /* during self-test, note that 0xf1 received */ | |
210 | if (ikbd_self_test) { | |
211 | ++ikbd_self_test; | |
212 | self_test_last_rcv = jiffies; | |
213 | break; | |
214 | } | |
215 | /* FALL THROUGH */ | |
216 | ||
217 | default: | |
218 | break_flag = scancode & BREAK_MASK; | |
219 | scancode &= ~BREAK_MASK; | |
220 | if (ikbd_self_test) { | |
221 | /* Scancodes sent during the self-test stand for broken | |
222 | * keys (keys being down). The code *should* be a break | |
223 | * code, but nevertheless some AT keyboard interfaces send | |
224 | * make codes instead. Therefore, simply ignore | |
225 | * break_flag... | |
226 | */ | |
3d83a2a5 | 227 | int keyval, keytyp; |
c04cb856 MS |
228 | |
229 | set_bit(scancode, broken_keys); | |
230 | self_test_last_rcv = jiffies; | |
3d83a2a5 GU |
231 | /* new Linux scancodes; approx. */ |
232 | keyval = scancode; | |
c04cb856 MS |
233 | keytyp = KTYP(keyval) - 0xf0; |
234 | keyval = KVAL(keyval); | |
235 | ||
236 | printk(KERN_WARNING "Key with scancode %d ", scancode); | |
237 | if (keytyp == KT_LATIN || keytyp == KT_LETTER) { | |
238 | if (keyval < ' ') | |
239 | printk("('^%c') ", keyval + '@'); | |
240 | else | |
241 | printk("('%c') ", keyval); | |
242 | } | |
243 | printk("is broken -- will be ignored.\n"); | |
244 | break; | |
245 | } else if (test_bit(scancode, broken_keys)) | |
246 | break; | |
247 | ||
c04cb856 MS |
248 | if (atari_input_keyboard_interrupt_hook) |
249 | atari_input_keyboard_interrupt_hook((unsigned char)scancode, !break_flag); | |
250 | break; | |
251 | } | |
252 | break; | |
253 | ||
254 | case AMOUSE: | |
255 | kb_state.buf[kb_state.len++] = scancode; | |
256 | if (kb_state.len == 5) { | |
257 | kb_state.state = KEYBOARD; | |
258 | /* not yet used */ | |
259 | /* wake up someone waiting for this */ | |
260 | } | |
261 | break; | |
262 | ||
263 | case RMOUSE: | |
264 | kb_state.buf[kb_state.len++] = scancode; | |
265 | if (kb_state.len == 3) { | |
266 | kb_state.state = KEYBOARD; | |
267 | if (atari_mouse_interrupt_hook) | |
268 | atari_mouse_interrupt_hook(kb_state.buf); | |
269 | } | |
270 | break; | |
271 | ||
272 | case JOYSTICK: | |
273 | kb_state.buf[1] = scancode; | |
274 | kb_state.state = KEYBOARD; | |
275 | #ifdef FIXED_ATARI_JOYSTICK | |
276 | atari_joystick_interrupt(kb_state.buf); | |
277 | #endif | |
278 | break; | |
279 | ||
280 | case CLOCK: | |
281 | kb_state.buf[kb_state.len++] = scancode; | |
282 | if (kb_state.len == 6) { | |
283 | kb_state.state = KEYBOARD; | |
284 | /* wake up someone waiting for this. | |
285 | But will this ever be used, as Linux keeps its own time. | |
286 | Perhaps for synchronization purposes? */ | |
287 | /* wake_up_interruptible(&clock_wait); */ | |
288 | } | |
289 | break; | |
290 | ||
291 | case RESYNC: | |
292 | if (kb_state.len <= 0 || IS_SYNC_CODE(scancode)) { | |
293 | kb_state.state = KEYBOARD; | |
294 | goto interpret_scancode; | |
295 | } | |
296 | kb_state.len--; | |
297 | break; | |
298 | } | |
299 | } | |
300 | ||
301 | #if 0 | |
302 | if (acia_stat & ACIA_CTS) | |
303 | /* cannot happen */; | |
304 | #endif | |
305 | ||
306 | if (acia_stat & (ACIA_FE | ACIA_PE)) { | |
307 | printk("Error in keyboard communication\n"); | |
308 | } | |
309 | ||
310 | /* handle_scancode() can take a lot of time, so check again if | |
311 | * some character arrived | |
312 | */ | |
313 | goto repeat; | |
314 | } | |
315 | ||
316 | /* | |
317 | * I write to the keyboard without using interrupts, I poll instead. | |
318 | * This takes for the maximum length string allowed (7) at 7812.5 baud | |
319 | * 8 data 1 start 1 stop bit: 9.0 ms | |
320 | * If this takes too long for normal operation, interrupt driven writing | |
321 | * is the solution. (I made a feeble attempt in that direction but I | |
322 | * kept it simple for now.) | |
323 | */ | |
324 | void ikbd_write(const char *str, int len) | |
325 | { | |
326 | u_char acia_stat; | |
327 | ||
328 | if ((len < 1) || (len > 7)) | |
329 | panic("ikbd: maximum string length exceeded"); | |
330 | while (len) { | |
331 | acia_stat = acia.key_ctrl; | |
332 | if (acia_stat & ACIA_TDRE) { | |
333 | acia.key_data = *str++; | |
334 | len--; | |
335 | } | |
336 | } | |
337 | } | |
338 | ||
339 | /* Reset (without touching the clock) */ | |
340 | void ikbd_reset(void) | |
341 | { | |
342 | static const char cmd[2] = { 0x80, 0x01 }; | |
343 | ||
344 | ikbd_write(cmd, 2); | |
345 | ||
346 | /* | |
347 | * if all's well code 0xF1 is returned, else the break codes of | |
348 | * all keys making contact | |
349 | */ | |
350 | } | |
351 | ||
352 | /* Set mouse button action */ | |
353 | void ikbd_mouse_button_action(int mode) | |
354 | { | |
355 | char cmd[2] = { 0x07, mode }; | |
356 | ||
357 | ikbd_write(cmd, 2); | |
358 | } | |
359 | ||
360 | /* Set relative mouse position reporting */ | |
361 | void ikbd_mouse_rel_pos(void) | |
362 | { | |
363 | static const char cmd[1] = { 0x08 }; | |
364 | ||
365 | ikbd_write(cmd, 1); | |
366 | } | |
88f8bb78 | 367 | EXPORT_SYMBOL(ikbd_mouse_rel_pos); |
c04cb856 MS |
368 | |
369 | /* Set absolute mouse position reporting */ | |
370 | void ikbd_mouse_abs_pos(int xmax, int ymax) | |
371 | { | |
372 | char cmd[5] = { 0x09, xmax>>8, xmax&0xFF, ymax>>8, ymax&0xFF }; | |
373 | ||
374 | ikbd_write(cmd, 5); | |
375 | } | |
376 | ||
377 | /* Set mouse keycode mode */ | |
378 | void ikbd_mouse_kbd_mode(int dx, int dy) | |
379 | { | |
380 | char cmd[3] = { 0x0A, dx, dy }; | |
381 | ||
382 | ikbd_write(cmd, 3); | |
383 | } | |
384 | ||
385 | /* Set mouse threshold */ | |
386 | void ikbd_mouse_thresh(int x, int y) | |
387 | { | |
388 | char cmd[3] = { 0x0B, x, y }; | |
389 | ||
390 | ikbd_write(cmd, 3); | |
391 | } | |
88f8bb78 | 392 | EXPORT_SYMBOL(ikbd_mouse_thresh); |
c04cb856 MS |
393 | |
394 | /* Set mouse scale */ | |
395 | void ikbd_mouse_scale(int x, int y) | |
396 | { | |
397 | char cmd[3] = { 0x0C, x, y }; | |
398 | ||
399 | ikbd_write(cmd, 3); | |
400 | } | |
401 | ||
402 | /* Interrogate mouse position */ | |
403 | void ikbd_mouse_pos_get(int *x, int *y) | |
404 | { | |
405 | static const char cmd[1] = { 0x0D }; | |
406 | ||
407 | ikbd_write(cmd, 1); | |
408 | ||
409 | /* wait for returning bytes */ | |
410 | } | |
411 | ||
412 | /* Load mouse position */ | |
413 | void ikbd_mouse_pos_set(int x, int y) | |
414 | { | |
415 | char cmd[6] = { 0x0E, 0x00, x>>8, x&0xFF, y>>8, y&0xFF }; | |
416 | ||
417 | ikbd_write(cmd, 6); | |
418 | } | |
419 | ||
420 | /* Set Y=0 at bottom */ | |
421 | void ikbd_mouse_y0_bot(void) | |
422 | { | |
423 | static const char cmd[1] = { 0x0F }; | |
424 | ||
425 | ikbd_write(cmd, 1); | |
426 | } | |
427 | ||
428 | /* Set Y=0 at top */ | |
429 | void ikbd_mouse_y0_top(void) | |
430 | { | |
431 | static const char cmd[1] = { 0x10 }; | |
432 | ||
433 | ikbd_write(cmd, 1); | |
434 | } | |
88f8bb78 | 435 | EXPORT_SYMBOL(ikbd_mouse_y0_top); |
c04cb856 MS |
436 | |
437 | /* Resume */ | |
438 | void ikbd_resume(void) | |
439 | { | |
440 | static const char cmd[1] = { 0x11 }; | |
441 | ||
442 | ikbd_write(cmd, 1); | |
443 | } | |
444 | ||
445 | /* Disable mouse */ | |
446 | void ikbd_mouse_disable(void) | |
447 | { | |
448 | static const char cmd[1] = { 0x12 }; | |
449 | ||
450 | ikbd_write(cmd, 1); | |
451 | } | |
88f8bb78 | 452 | EXPORT_SYMBOL(ikbd_mouse_disable); |
c04cb856 MS |
453 | |
454 | /* Pause output */ | |
455 | void ikbd_pause(void) | |
456 | { | |
457 | static const char cmd[1] = { 0x13 }; | |
458 | ||
459 | ikbd_write(cmd, 1); | |
460 | } | |
461 | ||
462 | /* Set joystick event reporting */ | |
463 | void ikbd_joystick_event_on(void) | |
464 | { | |
465 | static const char cmd[1] = { 0x14 }; | |
466 | ||
467 | ikbd_write(cmd, 1); | |
468 | } | |
469 | ||
470 | /* Set joystick interrogation mode */ | |
471 | void ikbd_joystick_event_off(void) | |
472 | { | |
473 | static const char cmd[1] = { 0x15 }; | |
474 | ||
475 | ikbd_write(cmd, 1); | |
476 | } | |
477 | ||
478 | /* Joystick interrogation */ | |
479 | void ikbd_joystick_get_state(void) | |
480 | { | |
481 | static const char cmd[1] = { 0x16 }; | |
482 | ||
483 | ikbd_write(cmd, 1); | |
484 | } | |
485 | ||
486 | #if 0 | |
487 | /* This disables all other ikbd activities !!!! */ | |
488 | /* Set joystick monitoring */ | |
489 | void ikbd_joystick_monitor(int rate) | |
490 | { | |
491 | static const char cmd[2] = { 0x17, rate }; | |
492 | ||
493 | ikbd_write(cmd, 2); | |
494 | ||
495 | kb_state.state = JOYSTICK_MONITOR; | |
496 | } | |
497 | #endif | |
498 | ||
499 | /* some joystick routines not in yet (0x18-0x19) */ | |
500 | ||
501 | /* Disable joysticks */ | |
502 | void ikbd_joystick_disable(void) | |
503 | { | |
504 | static const char cmd[1] = { 0x1A }; | |
505 | ||
506 | ikbd_write(cmd, 1); | |
507 | } | |
508 | ||
509 | /* Time-of-day clock set */ | |
510 | void ikbd_clock_set(int year, int month, int day, int hour, int minute, int second) | |
511 | { | |
512 | char cmd[7] = { 0x1B, year, month, day, hour, minute, second }; | |
513 | ||
514 | ikbd_write(cmd, 7); | |
515 | } | |
516 | ||
517 | /* Interrogate time-of-day clock */ | |
518 | void ikbd_clock_get(int *year, int *month, int *day, int *hour, int *minute, int second) | |
519 | { | |
520 | static const char cmd[1] = { 0x1C }; | |
521 | ||
522 | ikbd_write(cmd, 1); | |
523 | } | |
524 | ||
525 | /* Memory load */ | |
526 | void ikbd_mem_write(int address, int size, char *data) | |
527 | { | |
528 | panic("Attempt to write data into keyboard memory"); | |
529 | } | |
530 | ||
531 | /* Memory read */ | |
532 | void ikbd_mem_read(int address, char data[6]) | |
533 | { | |
534 | char cmd[3] = { 0x21, address>>8, address&0xFF }; | |
535 | ||
536 | ikbd_write(cmd, 3); | |
537 | ||
538 | /* receive data and put it in data */ | |
539 | } | |
540 | ||
541 | /* Controller execute */ | |
542 | void ikbd_exec(int address) | |
543 | { | |
544 | char cmd[3] = { 0x22, address>>8, address&0xFF }; | |
545 | ||
546 | ikbd_write(cmd, 3); | |
547 | } | |
548 | ||
549 | /* Status inquiries (0x87-0x9A) not yet implemented */ | |
550 | ||
551 | /* Set the state of the caps lock led. */ | |
552 | void atari_kbd_leds(unsigned int leds) | |
553 | { | |
554 | char cmd[6] = {32, 0, 4, 1, 254 + ((leds & 4) != 0), 0}; | |
555 | ||
556 | ikbd_write(cmd, 6); | |
557 | } | |
558 | ||
559 | /* | |
560 | * The original code sometimes left the interrupt line of | |
561 | * the ACIAs low forever. I hope, it is fixed now. | |
562 | * | |
563 | * Martin Rogge, 20 Aug 1995 | |
564 | */ | |
565 | ||
566 | static int atari_keyb_done = 0; | |
567 | ||
9e893bb8 | 568 | int atari_keyb_init(void) |
c04cb856 MS |
569 | { |
570 | if (atari_keyb_done) | |
571 | return 0; | |
572 | ||
c04cb856 MS |
573 | kb_state.state = KEYBOARD; |
574 | kb_state.len = 0; | |
575 | ||
576 | request_irq(IRQ_MFP_ACIA, atari_keyboard_interrupt, IRQ_TYPE_SLOW, | |
577 | "keyboard/mouse/MIDI", atari_keyboard_interrupt); | |
578 | ||
579 | atari_turnoff_irq(IRQ_MFP_ACIA); | |
580 | do { | |
581 | /* reset IKBD ACIA */ | |
582 | acia.key_ctrl = ACIA_RESET | | |
1136cf11 MS |
583 | ((atari_switches & ATARI_SWITCH_IKBD) ? |
584 | ACIA_RHTID : 0); | |
c04cb856 MS |
585 | (void)acia.key_ctrl; |
586 | (void)acia.key_data; | |
587 | ||
588 | /* reset MIDI ACIA */ | |
589 | acia.mid_ctrl = ACIA_RESET | | |
1136cf11 MS |
590 | ((atari_switches & ATARI_SWITCH_MIDI) ? |
591 | ACIA_RHTID : 0); | |
c04cb856 MS |
592 | (void)acia.mid_ctrl; |
593 | (void)acia.mid_data; | |
594 | ||
595 | /* divide 500kHz by 64 gives 7812.5 baud */ | |
596 | /* 8 data no parity 1 start 1 stop bit */ | |
597 | /* receive interrupt enabled */ | |
598 | /* RTS low (except if switch selected), transmit interrupt disabled */ | |
599 | acia.key_ctrl = (ACIA_DIV64|ACIA_D8N1S|ACIA_RIE) | | |
600 | ((atari_switches & ATARI_SWITCH_IKBD) ? | |
601 | ACIA_RHTID : ACIA_RLTID); | |
602 | ||
603 | acia.mid_ctrl = ACIA_DIV16 | ACIA_D8N1S | | |
1136cf11 MS |
604 | ((atari_switches & ATARI_SWITCH_MIDI) ? |
605 | ACIA_RHTID : 0); | |
c04cb856 MS |
606 | |
607 | /* make sure the interrupt line is up */ | |
608 | } while ((mfp.par_dt_reg & 0x10) == 0); | |
609 | ||
610 | /* enable ACIA Interrupts */ | |
611 | mfp.active_edge &= ~0x10; | |
612 | atari_turnon_irq(IRQ_MFP_ACIA); | |
613 | ||
614 | ikbd_self_test = 1; | |
615 | ikbd_reset(); | |
616 | /* wait for a period of inactivity (here: 0.25s), then assume the IKBD's | |
617 | * self-test is finished */ | |
618 | self_test_last_rcv = jiffies; | |
619 | while (time_before(jiffies, self_test_last_rcv + HZ/4)) | |
620 | barrier(); | |
621 | /* if not incremented: no 0xf1 received */ | |
622 | if (ikbd_self_test == 1) | |
623 | printk(KERN_ERR "WARNING: keyboard self test failed!\n"); | |
624 | ikbd_self_test = 0; | |
625 | ||
626 | ikbd_mouse_disable(); | |
627 | ikbd_joystick_disable(); | |
628 | ||
629 | #ifdef FIXED_ATARI_JOYSTICK | |
630 | atari_joystick_init(); | |
631 | #endif | |
632 | ||
633 | // flag init done | |
634 | atari_keyb_done = 1; | |
635 | return 0; | |
636 | } | |
9e893bb8 | 637 | EXPORT_SYMBOL_GPL(atari_keyb_init); |