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 | |
37 | /* Hook for MIDI serial driver */ | |
38 | void (*atari_MIDI_interrupt_hook) (void); | |
39 | /* Hook for mouse driver */ | |
40 | void (*atari_mouse_interrupt_hook) (char *); | |
41 | /* Hook for keyboard inputdev driver */ | |
42 | void (*atari_input_keyboard_interrupt_hook) (unsigned char, char); | |
43 | /* Hook for mouse inputdev driver */ | |
44 | void (*atari_input_mouse_interrupt_hook) (char *); | |
88f8bb78 AV |
45 | EXPORT_SYMBOL(atari_mouse_interrupt_hook); |
46 | EXPORT_SYMBOL(atari_input_keyboard_interrupt_hook); | |
47 | EXPORT_SYMBOL(atari_input_mouse_interrupt_hook); | |
c04cb856 MS |
48 | |
49 | /* variables for IKBD self test: */ | |
50 | ||
51 | /* state: 0: off; >0: in progress; >1: 0xf1 received */ | |
52 | static volatile int ikbd_self_test; | |
53 | /* timestamp when last received a char */ | |
54 | static volatile unsigned long self_test_last_rcv; | |
55 | /* bitmap of keys reported as broken */ | |
56 | static unsigned long broken_keys[128/(sizeof(unsigned long)*8)] = { 0, }; | |
57 | ||
58 | #define BREAK_MASK (0x80) | |
59 | ||
60 | /* | |
61 | * ++roman: The following changes were applied manually: | |
62 | * | |
63 | * - The Alt (= Meta) key works in combination with Shift and | |
64 | * Control, e.g. Alt+Shift+a sends Meta-A (0xc1), Alt+Control+A sends | |
65 | * Meta-Ctrl-A (0x81) ... | |
66 | * | |
67 | * - The parentheses on the keypad send '(' and ')' with all | |
68 | * modifiers (as would do e.g. keypad '+'), but they cannot be used as | |
69 | * application keys (i.e. sending Esc O c). | |
70 | * | |
71 | * - HELP and UNDO are mapped to be F21 and F24, resp, that send the | |
72 | * codes "\E[M" and "\E[P". (This is better than the old mapping to | |
73 | * F11 and F12, because these codes are on Shift+F1/2 anyway.) This | |
74 | * way, applications that allow their own keyboard mappings | |
75 | * (e.g. tcsh, X Windows) can be configured to use them in the way | |
76 | * the label suggests (providing help or undoing). | |
77 | * | |
78 | * - Console switching is done with Alt+Fx (consoles 1..10) and | |
79 | * Shift+Alt+Fx (consoles 11..20). | |
80 | * | |
81 | * - The misc. special function implemented in the kernel are mapped | |
82 | * to the following key combinations: | |
83 | * | |
84 | * ClrHome -> Home/Find | |
85 | * Shift + ClrHome -> End/Select | |
86 | * Shift + Up -> Page Up | |
87 | * Shift + Down -> Page Down | |
88 | * Alt + Help -> show system status | |
89 | * Shift + Help -> show memory info | |
90 | * Ctrl + Help -> show registers | |
91 | * Ctrl + Alt + Del -> Reboot | |
92 | * Alt + Undo -> switch to last console | |
93 | * Shift + Undo -> send interrupt | |
94 | * Alt + Insert -> stop/start output (same as ^S/^Q) | |
95 | * Alt + Up -> Scroll back console (if implemented) | |
96 | * Alt + Down -> Scroll forward console (if implemented) | |
97 | * Alt + CapsLock -> NumLock | |
98 | * | |
99 | * ++Andreas: | |
100 | * | |
101 | * - Help mapped to K_HELP | |
102 | * - Undo mapped to K_UNDO (= K_F246) | |
103 | * - Keypad Left/Right Parenthesis mapped to new K_PPAREN[LR] | |
104 | */ | |
105 | ||
c04cb856 MS |
106 | typedef enum kb_state_t { |
107 | KEYBOARD, AMOUSE, RMOUSE, JOYSTICK, CLOCK, RESYNC | |
108 | } KB_STATE_T; | |
109 | ||
110 | #define IS_SYNC_CODE(sc) ((sc) >= 0x04 && (sc) <= 0xfb) | |
111 | ||
112 | typedef struct keyboard_state { | |
113 | unsigned char buf[6]; | |
114 | int len; | |
115 | KB_STATE_T state; | |
116 | } KEYBOARD_STATE; | |
117 | ||
118 | KEYBOARD_STATE kb_state; | |
119 | ||
c04cb856 MS |
120 | /* ++roman: If a keyboard overrun happened, we can't tell in general how much |
121 | * bytes have been lost and in which state of the packet structure we are now. | |
122 | * This usually causes keyboards bytes to be interpreted as mouse movements | |
123 | * and vice versa, which is very annoying. It seems better to throw away some | |
124 | * bytes (that are usually mouse bytes) than to misinterpret them. Therefor I | |
125 | * introduced the RESYNC state for IKBD data. In this state, the bytes up to | |
126 | * one that really looks like a key event (0x04..0xf2) or the start of a mouse | |
127 | * packet (0xf8..0xfb) are thrown away, but at most 2 bytes. This at least | |
128 | * speeds up the resynchronization of the event structure, even if maybe a | |
129 | * mouse movement is lost. However, nothing is perfect. For bytes 0x01..0x03, | |
130 | * it's really hard to decide whether they're mouse or keyboard bytes. Since | |
131 | * overruns usually occur when moving the Atari mouse rapidly, they're seen as | |
132 | * mouse bytes here. If this is wrong, only a make code of the keyboard gets | |
133 | * lost, which isn't too bad. Loosing a break code would be disastrous, | |
134 | * because then the keyboard repeat strikes... | |
135 | */ | |
136 | ||
137 | static irqreturn_t atari_keyboard_interrupt(int irq, void *dummy) | |
138 | { | |
139 | u_char acia_stat; | |
140 | int scancode; | |
141 | int break_flag; | |
142 | ||
143 | repeat: | |
144 | if (acia.mid_ctrl & ACIA_IRQ) | |
145 | if (atari_MIDI_interrupt_hook) | |
146 | atari_MIDI_interrupt_hook(); | |
147 | acia_stat = acia.key_ctrl; | |
148 | /* check out if the interrupt came from this ACIA */ | |
149 | if (!((acia_stat | acia.mid_ctrl) & ACIA_IRQ)) | |
150 | return IRQ_HANDLED; | |
151 | ||
152 | if (acia_stat & ACIA_OVRN) { | |
153 | /* a very fast typist or a slow system, give a warning */ | |
154 | /* ...happens often if interrupts were disabled for too long */ | |
155 | printk(KERN_DEBUG "Keyboard overrun\n"); | |
156 | scancode = acia.key_data; | |
c04cb856 MS |
157 | if (ikbd_self_test) |
158 | /* During self test, don't do resyncing, just process the code */ | |
159 | goto interpret_scancode; | |
160 | else if (IS_SYNC_CODE(scancode)) { | |
161 | /* This code seem already to be the start of a new packet or a | |
162 | * single scancode */ | |
163 | kb_state.state = KEYBOARD; | |
164 | goto interpret_scancode; | |
165 | } else { | |
166 | /* Go to RESYNC state and skip this byte */ | |
167 | kb_state.state = RESYNC; | |
168 | kb_state.len = 1; /* skip max. 1 another byte */ | |
169 | goto repeat; | |
170 | } | |
171 | } | |
172 | ||
173 | if (acia_stat & ACIA_RDRF) { | |
174 | /* received a character */ | |
175 | scancode = acia.key_data; /* get it or reset the ACIA, I'll get it! */ | |
176 | tasklet_schedule(&keyboard_tasklet); | |
177 | interpret_scancode: | |
178 | switch (kb_state.state) { | |
179 | case KEYBOARD: | |
180 | switch (scancode) { | |
181 | case 0xF7: | |
182 | kb_state.state = AMOUSE; | |
183 | kb_state.len = 0; | |
184 | break; | |
185 | ||
186 | case 0xF8: | |
187 | case 0xF9: | |
188 | case 0xFA: | |
189 | case 0xFB: | |
190 | kb_state.state = RMOUSE; | |
191 | kb_state.len = 1; | |
192 | kb_state.buf[0] = scancode; | |
193 | break; | |
194 | ||
195 | case 0xFC: | |
196 | kb_state.state = CLOCK; | |
197 | kb_state.len = 0; | |
198 | break; | |
199 | ||
200 | case 0xFE: | |
201 | case 0xFF: | |
202 | kb_state.state = JOYSTICK; | |
203 | kb_state.len = 1; | |
204 | kb_state.buf[0] = scancode; | |
205 | break; | |
206 | ||
207 | case 0xF1: | |
208 | /* during self-test, note that 0xf1 received */ | |
209 | if (ikbd_self_test) { | |
210 | ++ikbd_self_test; | |
211 | self_test_last_rcv = jiffies; | |
212 | break; | |
213 | } | |
214 | /* FALL THROUGH */ | |
215 | ||
216 | default: | |
217 | break_flag = scancode & BREAK_MASK; | |
218 | scancode &= ~BREAK_MASK; | |
219 | if (ikbd_self_test) { | |
220 | /* Scancodes sent during the self-test stand for broken | |
221 | * keys (keys being down). The code *should* be a break | |
222 | * code, but nevertheless some AT keyboard interfaces send | |
223 | * make codes instead. Therefore, simply ignore | |
224 | * break_flag... | |
225 | */ | |
3d83a2a5 | 226 | int keyval, keytyp; |
c04cb856 MS |
227 | |
228 | set_bit(scancode, broken_keys); | |
229 | self_test_last_rcv = jiffies; | |
3d83a2a5 GU |
230 | /* new Linux scancodes; approx. */ |
231 | keyval = scancode; | |
c04cb856 MS |
232 | keytyp = KTYP(keyval) - 0xf0; |
233 | keyval = KVAL(keyval); | |
234 | ||
235 | printk(KERN_WARNING "Key with scancode %d ", scancode); | |
236 | if (keytyp == KT_LATIN || keytyp == KT_LETTER) { | |
237 | if (keyval < ' ') | |
238 | printk("('^%c') ", keyval + '@'); | |
239 | else | |
240 | printk("('%c') ", keyval); | |
241 | } | |
242 | printk("is broken -- will be ignored.\n"); | |
243 | break; | |
244 | } else if (test_bit(scancode, broken_keys)) | |
245 | break; | |
246 | ||
c04cb856 MS |
247 | if (atari_input_keyboard_interrupt_hook) |
248 | atari_input_keyboard_interrupt_hook((unsigned char)scancode, !break_flag); | |
249 | break; | |
250 | } | |
251 | break; | |
252 | ||
253 | case AMOUSE: | |
254 | kb_state.buf[kb_state.len++] = scancode; | |
255 | if (kb_state.len == 5) { | |
256 | kb_state.state = KEYBOARD; | |
257 | /* not yet used */ | |
258 | /* wake up someone waiting for this */ | |
259 | } | |
260 | break; | |
261 | ||
262 | case RMOUSE: | |
263 | kb_state.buf[kb_state.len++] = scancode; | |
264 | if (kb_state.len == 3) { | |
265 | kb_state.state = KEYBOARD; | |
266 | if (atari_mouse_interrupt_hook) | |
267 | atari_mouse_interrupt_hook(kb_state.buf); | |
268 | } | |
269 | break; | |
270 | ||
271 | case JOYSTICK: | |
272 | kb_state.buf[1] = scancode; | |
273 | kb_state.state = KEYBOARD; | |
274 | #ifdef FIXED_ATARI_JOYSTICK | |
275 | atari_joystick_interrupt(kb_state.buf); | |
276 | #endif | |
277 | break; | |
278 | ||
279 | case CLOCK: | |
280 | kb_state.buf[kb_state.len++] = scancode; | |
281 | if (kb_state.len == 6) { | |
282 | kb_state.state = KEYBOARD; | |
283 | /* wake up someone waiting for this. | |
284 | But will this ever be used, as Linux keeps its own time. | |
285 | Perhaps for synchronization purposes? */ | |
286 | /* wake_up_interruptible(&clock_wait); */ | |
287 | } | |
288 | break; | |
289 | ||
290 | case RESYNC: | |
291 | if (kb_state.len <= 0 || IS_SYNC_CODE(scancode)) { | |
292 | kb_state.state = KEYBOARD; | |
293 | goto interpret_scancode; | |
294 | } | |
295 | kb_state.len--; | |
296 | break; | |
297 | } | |
298 | } | |
299 | ||
300 | #if 0 | |
301 | if (acia_stat & ACIA_CTS) | |
302 | /* cannot happen */; | |
303 | #endif | |
304 | ||
305 | if (acia_stat & (ACIA_FE | ACIA_PE)) { | |
306 | printk("Error in keyboard communication\n"); | |
307 | } | |
308 | ||
309 | /* handle_scancode() can take a lot of time, so check again if | |
310 | * some character arrived | |
311 | */ | |
312 | goto repeat; | |
313 | } | |
314 | ||
315 | /* | |
316 | * I write to the keyboard without using interrupts, I poll instead. | |
317 | * This takes for the maximum length string allowed (7) at 7812.5 baud | |
318 | * 8 data 1 start 1 stop bit: 9.0 ms | |
319 | * If this takes too long for normal operation, interrupt driven writing | |
320 | * is the solution. (I made a feeble attempt in that direction but I | |
321 | * kept it simple for now.) | |
322 | */ | |
323 | void ikbd_write(const char *str, int len) | |
324 | { | |
325 | u_char acia_stat; | |
326 | ||
327 | if ((len < 1) || (len > 7)) | |
328 | panic("ikbd: maximum string length exceeded"); | |
329 | while (len) { | |
330 | acia_stat = acia.key_ctrl; | |
331 | if (acia_stat & ACIA_TDRE) { | |
332 | acia.key_data = *str++; | |
333 | len--; | |
334 | } | |
335 | } | |
336 | } | |
337 | ||
338 | /* Reset (without touching the clock) */ | |
339 | void ikbd_reset(void) | |
340 | { | |
341 | static const char cmd[2] = { 0x80, 0x01 }; | |
342 | ||
343 | ikbd_write(cmd, 2); | |
344 | ||
345 | /* | |
346 | * if all's well code 0xF1 is returned, else the break codes of | |
347 | * all keys making contact | |
348 | */ | |
349 | } | |
350 | ||
351 | /* Set mouse button action */ | |
352 | void ikbd_mouse_button_action(int mode) | |
353 | { | |
354 | char cmd[2] = { 0x07, mode }; | |
355 | ||
356 | ikbd_write(cmd, 2); | |
357 | } | |
358 | ||
359 | /* Set relative mouse position reporting */ | |
360 | void ikbd_mouse_rel_pos(void) | |
361 | { | |
362 | static const char cmd[1] = { 0x08 }; | |
363 | ||
364 | ikbd_write(cmd, 1); | |
365 | } | |
88f8bb78 | 366 | EXPORT_SYMBOL(ikbd_mouse_rel_pos); |
c04cb856 MS |
367 | |
368 | /* Set absolute mouse position reporting */ | |
369 | void ikbd_mouse_abs_pos(int xmax, int ymax) | |
370 | { | |
371 | char cmd[5] = { 0x09, xmax>>8, xmax&0xFF, ymax>>8, ymax&0xFF }; | |
372 | ||
373 | ikbd_write(cmd, 5); | |
374 | } | |
375 | ||
376 | /* Set mouse keycode mode */ | |
377 | void ikbd_mouse_kbd_mode(int dx, int dy) | |
378 | { | |
379 | char cmd[3] = { 0x0A, dx, dy }; | |
380 | ||
381 | ikbd_write(cmd, 3); | |
382 | } | |
383 | ||
384 | /* Set mouse threshold */ | |
385 | void ikbd_mouse_thresh(int x, int y) | |
386 | { | |
387 | char cmd[3] = { 0x0B, x, y }; | |
388 | ||
389 | ikbd_write(cmd, 3); | |
390 | } | |
88f8bb78 | 391 | EXPORT_SYMBOL(ikbd_mouse_thresh); |
c04cb856 MS |
392 | |
393 | /* Set mouse scale */ | |
394 | void ikbd_mouse_scale(int x, int y) | |
395 | { | |
396 | char cmd[3] = { 0x0C, x, y }; | |
397 | ||
398 | ikbd_write(cmd, 3); | |
399 | } | |
400 | ||
401 | /* Interrogate mouse position */ | |
402 | void ikbd_mouse_pos_get(int *x, int *y) | |
403 | { | |
404 | static const char cmd[1] = { 0x0D }; | |
405 | ||
406 | ikbd_write(cmd, 1); | |
407 | ||
408 | /* wait for returning bytes */ | |
409 | } | |
410 | ||
411 | /* Load mouse position */ | |
412 | void ikbd_mouse_pos_set(int x, int y) | |
413 | { | |
414 | char cmd[6] = { 0x0E, 0x00, x>>8, x&0xFF, y>>8, y&0xFF }; | |
415 | ||
416 | ikbd_write(cmd, 6); | |
417 | } | |
418 | ||
419 | /* Set Y=0 at bottom */ | |
420 | void ikbd_mouse_y0_bot(void) | |
421 | { | |
422 | static const char cmd[1] = { 0x0F }; | |
423 | ||
424 | ikbd_write(cmd, 1); | |
425 | } | |
426 | ||
427 | /* Set Y=0 at top */ | |
428 | void ikbd_mouse_y0_top(void) | |
429 | { | |
430 | static const char cmd[1] = { 0x10 }; | |
431 | ||
432 | ikbd_write(cmd, 1); | |
433 | } | |
88f8bb78 | 434 | EXPORT_SYMBOL(ikbd_mouse_y0_top); |
c04cb856 MS |
435 | |
436 | /* Resume */ | |
437 | void ikbd_resume(void) | |
438 | { | |
439 | static const char cmd[1] = { 0x11 }; | |
440 | ||
441 | ikbd_write(cmd, 1); | |
442 | } | |
443 | ||
444 | /* Disable mouse */ | |
445 | void ikbd_mouse_disable(void) | |
446 | { | |
447 | static const char cmd[1] = { 0x12 }; | |
448 | ||
449 | ikbd_write(cmd, 1); | |
450 | } | |
88f8bb78 | 451 | EXPORT_SYMBOL(ikbd_mouse_disable); |
c04cb856 MS |
452 | |
453 | /* Pause output */ | |
454 | void ikbd_pause(void) | |
455 | { | |
456 | static const char cmd[1] = { 0x13 }; | |
457 | ||
458 | ikbd_write(cmd, 1); | |
459 | } | |
460 | ||
461 | /* Set joystick event reporting */ | |
462 | void ikbd_joystick_event_on(void) | |
463 | { | |
464 | static const char cmd[1] = { 0x14 }; | |
465 | ||
466 | ikbd_write(cmd, 1); | |
467 | } | |
468 | ||
469 | /* Set joystick interrogation mode */ | |
470 | void ikbd_joystick_event_off(void) | |
471 | { | |
472 | static const char cmd[1] = { 0x15 }; | |
473 | ||
474 | ikbd_write(cmd, 1); | |
475 | } | |
476 | ||
477 | /* Joystick interrogation */ | |
478 | void ikbd_joystick_get_state(void) | |
479 | { | |
480 | static const char cmd[1] = { 0x16 }; | |
481 | ||
482 | ikbd_write(cmd, 1); | |
483 | } | |
484 | ||
485 | #if 0 | |
486 | /* This disables all other ikbd activities !!!! */ | |
487 | /* Set joystick monitoring */ | |
488 | void ikbd_joystick_monitor(int rate) | |
489 | { | |
490 | static const char cmd[2] = { 0x17, rate }; | |
491 | ||
492 | ikbd_write(cmd, 2); | |
493 | ||
494 | kb_state.state = JOYSTICK_MONITOR; | |
495 | } | |
496 | #endif | |
497 | ||
498 | /* some joystick routines not in yet (0x18-0x19) */ | |
499 | ||
500 | /* Disable joysticks */ | |
501 | void ikbd_joystick_disable(void) | |
502 | { | |
503 | static const char cmd[1] = { 0x1A }; | |
504 | ||
505 | ikbd_write(cmd, 1); | |
506 | } | |
507 | ||
508 | /* Time-of-day clock set */ | |
509 | void ikbd_clock_set(int year, int month, int day, int hour, int minute, int second) | |
510 | { | |
511 | char cmd[7] = { 0x1B, year, month, day, hour, minute, second }; | |
512 | ||
513 | ikbd_write(cmd, 7); | |
514 | } | |
515 | ||
516 | /* Interrogate time-of-day clock */ | |
517 | void ikbd_clock_get(int *year, int *month, int *day, int *hour, int *minute, int second) | |
518 | { | |
519 | static const char cmd[1] = { 0x1C }; | |
520 | ||
521 | ikbd_write(cmd, 1); | |
522 | } | |
523 | ||
524 | /* Memory load */ | |
525 | void ikbd_mem_write(int address, int size, char *data) | |
526 | { | |
527 | panic("Attempt to write data into keyboard memory"); | |
528 | } | |
529 | ||
530 | /* Memory read */ | |
531 | void ikbd_mem_read(int address, char data[6]) | |
532 | { | |
533 | char cmd[3] = { 0x21, address>>8, address&0xFF }; | |
534 | ||
535 | ikbd_write(cmd, 3); | |
536 | ||
537 | /* receive data and put it in data */ | |
538 | } | |
539 | ||
540 | /* Controller execute */ | |
541 | void ikbd_exec(int address) | |
542 | { | |
543 | char cmd[3] = { 0x22, address>>8, address&0xFF }; | |
544 | ||
545 | ikbd_write(cmd, 3); | |
546 | } | |
547 | ||
548 | /* Status inquiries (0x87-0x9A) not yet implemented */ | |
549 | ||
550 | /* Set the state of the caps lock led. */ | |
551 | void atari_kbd_leds(unsigned int leds) | |
552 | { | |
553 | char cmd[6] = {32, 0, 4, 1, 254 + ((leds & 4) != 0), 0}; | |
554 | ||
555 | ikbd_write(cmd, 6); | |
556 | } | |
557 | ||
558 | /* | |
559 | * The original code sometimes left the interrupt line of | |
560 | * the ACIAs low forever. I hope, it is fixed now. | |
561 | * | |
562 | * Martin Rogge, 20 Aug 1995 | |
563 | */ | |
564 | ||
565 | static int atari_keyb_done = 0; | |
566 | ||
9e893bb8 | 567 | int atari_keyb_init(void) |
c04cb856 | 568 | { |
5b8b4c3d GU |
569 | int error; |
570 | ||
c04cb856 MS |
571 | if (atari_keyb_done) |
572 | return 0; | |
573 | ||
c04cb856 MS |
574 | kb_state.state = KEYBOARD; |
575 | kb_state.len = 0; | |
576 | ||
5b8b4c3d GU |
577 | error = request_irq(IRQ_MFP_ACIA, atari_keyboard_interrupt, |
578 | IRQ_TYPE_SLOW, "keyboard/mouse/MIDI", | |
579 | atari_keyboard_interrupt); | |
580 | if (error) | |
581 | return error; | |
c04cb856 MS |
582 | |
583 | atari_turnoff_irq(IRQ_MFP_ACIA); | |
584 | do { | |
585 | /* reset IKBD ACIA */ | |
586 | acia.key_ctrl = ACIA_RESET | | |
1136cf11 MS |
587 | ((atari_switches & ATARI_SWITCH_IKBD) ? |
588 | ACIA_RHTID : 0); | |
c04cb856 MS |
589 | (void)acia.key_ctrl; |
590 | (void)acia.key_data; | |
591 | ||
592 | /* reset MIDI ACIA */ | |
593 | acia.mid_ctrl = ACIA_RESET | | |
1136cf11 MS |
594 | ((atari_switches & ATARI_SWITCH_MIDI) ? |
595 | ACIA_RHTID : 0); | |
c04cb856 MS |
596 | (void)acia.mid_ctrl; |
597 | (void)acia.mid_data; | |
598 | ||
599 | /* divide 500kHz by 64 gives 7812.5 baud */ | |
600 | /* 8 data no parity 1 start 1 stop bit */ | |
601 | /* receive interrupt enabled */ | |
602 | /* RTS low (except if switch selected), transmit interrupt disabled */ | |
603 | acia.key_ctrl = (ACIA_DIV64|ACIA_D8N1S|ACIA_RIE) | | |
604 | ((atari_switches & ATARI_SWITCH_IKBD) ? | |
605 | ACIA_RHTID : ACIA_RLTID); | |
606 | ||
607 | acia.mid_ctrl = ACIA_DIV16 | ACIA_D8N1S | | |
1136cf11 MS |
608 | ((atari_switches & ATARI_SWITCH_MIDI) ? |
609 | ACIA_RHTID : 0); | |
c04cb856 MS |
610 | |
611 | /* make sure the interrupt line is up */ | |
3d92e8f3 | 612 | } while ((st_mfp.par_dt_reg & 0x10) == 0); |
c04cb856 MS |
613 | |
614 | /* enable ACIA Interrupts */ | |
3d92e8f3 | 615 | st_mfp.active_edge &= ~0x10; |
c04cb856 MS |
616 | atari_turnon_irq(IRQ_MFP_ACIA); |
617 | ||
618 | ikbd_self_test = 1; | |
619 | ikbd_reset(); | |
620 | /* wait for a period of inactivity (here: 0.25s), then assume the IKBD's | |
621 | * self-test is finished */ | |
622 | self_test_last_rcv = jiffies; | |
623 | while (time_before(jiffies, self_test_last_rcv + HZ/4)) | |
624 | barrier(); | |
625 | /* if not incremented: no 0xf1 received */ | |
626 | if (ikbd_self_test == 1) | |
627 | printk(KERN_ERR "WARNING: keyboard self test failed!\n"); | |
628 | ikbd_self_test = 0; | |
629 | ||
630 | ikbd_mouse_disable(); | |
631 | ikbd_joystick_disable(); | |
632 | ||
633 | #ifdef FIXED_ATARI_JOYSTICK | |
634 | atari_joystick_init(); | |
635 | #endif | |
636 | ||
637 | // flag init done | |
638 | atari_keyb_done = 1; | |
639 | return 0; | |
640 | } | |
9e893bb8 | 641 | EXPORT_SYMBOL_GPL(atari_keyb_init); |