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c04cb856 MS |
1 | /* |
2 | * linux/atari/atakeyb.c | |
3 | * | |
4 | * Atari Keyboard driver for 680x0 Linux | |
5 | * | |
6 | * This file is subject to the terms and conditions of the GNU General Public | |
7 | * License. See the file COPYING in the main directory of this archive | |
8 | * for more details. | |
9 | */ | |
10 | ||
11 | /* | |
12 | * Atari support by Robert de Vries | |
13 | * enhanced by Bjoern Brauel and Roman Hodek | |
14 | */ | |
15 | ||
16 | #include <linux/sched.h> | |
17 | #include <linux/kernel.h> | |
18 | #include <linux/interrupt.h> | |
19 | #include <linux/errno.h> | |
20 | #include <linux/keyboard.h> | |
21 | #include <linux/delay.h> | |
22 | #include <linux/timer.h> | |
23 | #include <linux/kd.h> | |
24 | #include <linux/random.h> | |
25 | #include <linux/init.h> | |
26 | #include <linux/kbd_kern.h> | |
27 | ||
28 | #include <asm/atariints.h> | |
29 | #include <asm/atarihw.h> | |
30 | #include <asm/atarikb.h> | |
31 | #include <asm/atari_joystick.h> | |
32 | #include <asm/irq.h> | |
33 | ||
34 | static void atakeyb_rep(unsigned long ignore); | |
35 | extern unsigned int keymap_count; | |
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 *); | |
45 | ||
46 | /* variables for IKBD self test: */ | |
47 | ||
48 | /* state: 0: off; >0: in progress; >1: 0xf1 received */ | |
49 | static volatile int ikbd_self_test; | |
50 | /* timestamp when last received a char */ | |
51 | static volatile unsigned long self_test_last_rcv; | |
52 | /* bitmap of keys reported as broken */ | |
53 | static unsigned long broken_keys[128/(sizeof(unsigned long)*8)] = { 0, }; | |
54 | ||
55 | #define BREAK_MASK (0x80) | |
56 | ||
57 | /* | |
58 | * ++roman: The following changes were applied manually: | |
59 | * | |
60 | * - The Alt (= Meta) key works in combination with Shift and | |
61 | * Control, e.g. Alt+Shift+a sends Meta-A (0xc1), Alt+Control+A sends | |
62 | * Meta-Ctrl-A (0x81) ... | |
63 | * | |
64 | * - The parentheses on the keypad send '(' and ')' with all | |
65 | * modifiers (as would do e.g. keypad '+'), but they cannot be used as | |
66 | * application keys (i.e. sending Esc O c). | |
67 | * | |
68 | * - HELP and UNDO are mapped to be F21 and F24, resp, that send the | |
69 | * codes "\E[M" and "\E[P". (This is better than the old mapping to | |
70 | * F11 and F12, because these codes are on Shift+F1/2 anyway.) This | |
71 | * way, applications that allow their own keyboard mappings | |
72 | * (e.g. tcsh, X Windows) can be configured to use them in the way | |
73 | * the label suggests (providing help or undoing). | |
74 | * | |
75 | * - Console switching is done with Alt+Fx (consoles 1..10) and | |
76 | * Shift+Alt+Fx (consoles 11..20). | |
77 | * | |
78 | * - The misc. special function implemented in the kernel are mapped | |
79 | * to the following key combinations: | |
80 | * | |
81 | * ClrHome -> Home/Find | |
82 | * Shift + ClrHome -> End/Select | |
83 | * Shift + Up -> Page Up | |
84 | * Shift + Down -> Page Down | |
85 | * Alt + Help -> show system status | |
86 | * Shift + Help -> show memory info | |
87 | * Ctrl + Help -> show registers | |
88 | * Ctrl + Alt + Del -> Reboot | |
89 | * Alt + Undo -> switch to last console | |
90 | * Shift + Undo -> send interrupt | |
91 | * Alt + Insert -> stop/start output (same as ^S/^Q) | |
92 | * Alt + Up -> Scroll back console (if implemented) | |
93 | * Alt + Down -> Scroll forward console (if implemented) | |
94 | * Alt + CapsLock -> NumLock | |
95 | * | |
96 | * ++Andreas: | |
97 | * | |
98 | * - Help mapped to K_HELP | |
99 | * - Undo mapped to K_UNDO (= K_F246) | |
100 | * - Keypad Left/Right Parenthesis mapped to new K_PPAREN[LR] | |
101 | */ | |
102 | ||
103 | static u_short ataplain_map[NR_KEYS] __initdata = { | |
104 | 0xf200, 0xf01b, 0xf031, 0xf032, 0xf033, 0xf034, 0xf035, 0xf036, | |
105 | 0xf037, 0xf038, 0xf039, 0xf030, 0xf02d, 0xf03d, 0xf008, 0xf009, | |
106 | 0xfb71, 0xfb77, 0xfb65, 0xfb72, 0xfb74, 0xfb79, 0xfb75, 0xfb69, | |
107 | 0xfb6f, 0xfb70, 0xf05b, 0xf05d, 0xf201, 0xf702, 0xfb61, 0xfb73, | |
108 | 0xfb64, 0xfb66, 0xfb67, 0xfb68, 0xfb6a, 0xfb6b, 0xfb6c, 0xf03b, | |
109 | 0xf027, 0xf060, 0xf700, 0xf05c, 0xfb7a, 0xfb78, 0xfb63, 0xfb76, | |
110 | 0xfb62, 0xfb6e, 0xfb6d, 0xf02c, 0xf02e, 0xf02f, 0xf700, 0xf200, | |
111 | 0xf703, 0xf020, 0xf207, 0xf100, 0xf101, 0xf102, 0xf103, 0xf104, | |
112 | 0xf105, 0xf106, 0xf107, 0xf108, 0xf109, 0xf200, 0xf200, 0xf114, | |
113 | 0xf603, 0xf200, 0xf30b, 0xf601, 0xf200, 0xf602, 0xf30a, 0xf200, | |
114 | 0xf600, 0xf200, 0xf115, 0xf07f, 0xf200, 0xf200, 0xf200, 0xf200, | |
115 | 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, | |
116 | 0xf200, 0xf1ff, 0xf11b, 0xf312, 0xf313, 0xf30d, 0xf30c, 0xf307, | |
117 | 0xf308, 0xf309, 0xf304, 0xf305, 0xf306, 0xf301, 0xf302, 0xf303, | |
118 | 0xf300, 0xf310, 0xf30e, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, | |
119 | 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200 | |
120 | }; | |
121 | ||
122 | typedef enum kb_state_t { | |
123 | KEYBOARD, AMOUSE, RMOUSE, JOYSTICK, CLOCK, RESYNC | |
124 | } KB_STATE_T; | |
125 | ||
126 | #define IS_SYNC_CODE(sc) ((sc) >= 0x04 && (sc) <= 0xfb) | |
127 | ||
128 | typedef struct keyboard_state { | |
129 | unsigned char buf[6]; | |
130 | int len; | |
131 | KB_STATE_T state; | |
132 | } KEYBOARD_STATE; | |
133 | ||
134 | KEYBOARD_STATE kb_state; | |
135 | ||
136 | #define DEFAULT_KEYB_REP_DELAY (HZ/4) | |
137 | #define DEFAULT_KEYB_REP_RATE (HZ/25) | |
138 | ||
139 | /* These could be settable by some ioctl() in future... */ | |
140 | static unsigned int key_repeat_delay = DEFAULT_KEYB_REP_DELAY; | |
141 | static unsigned int key_repeat_rate = DEFAULT_KEYB_REP_RATE; | |
142 | ||
143 | static unsigned char rep_scancode; | |
144 | static struct timer_list atakeyb_rep_timer = { | |
145 | .function = atakeyb_rep, | |
146 | }; | |
147 | ||
148 | static void atakeyb_rep(unsigned long ignore) | |
149 | { | |
150 | /* Disable keyboard for the time we call handle_scancode(), else a race | |
151 | * in the keyboard tty queue may happen */ | |
152 | atari_disable_irq(IRQ_MFP_ACIA); | |
153 | del_timer(&atakeyb_rep_timer); | |
154 | ||
155 | /* A keyboard int may have come in before we disabled the irq, so | |
156 | * double-check whether rep_scancode is still != 0 */ | |
157 | if (rep_scancode) { | |
158 | init_timer(&atakeyb_rep_timer); | |
159 | atakeyb_rep_timer.expires = jiffies + key_repeat_rate; | |
160 | add_timer(&atakeyb_rep_timer); | |
161 | ||
162 | //handle_scancode(rep_scancode, 1); | |
163 | if (atari_input_keyboard_interrupt_hook) | |
164 | atari_input_keyboard_interrupt_hook(rep_scancode, 1); | |
165 | } | |
166 | ||
167 | atari_enable_irq(IRQ_MFP_ACIA); | |
168 | } | |
169 | ||
170 | ||
171 | /* ++roman: If a keyboard overrun happened, we can't tell in general how much | |
172 | * bytes have been lost and in which state of the packet structure we are now. | |
173 | * This usually causes keyboards bytes to be interpreted as mouse movements | |
174 | * and vice versa, which is very annoying. It seems better to throw away some | |
175 | * bytes (that are usually mouse bytes) than to misinterpret them. Therefor I | |
176 | * introduced the RESYNC state for IKBD data. In this state, the bytes up to | |
177 | * one that really looks like a key event (0x04..0xf2) or the start of a mouse | |
178 | * packet (0xf8..0xfb) are thrown away, but at most 2 bytes. This at least | |
179 | * speeds up the resynchronization of the event structure, even if maybe a | |
180 | * mouse movement is lost. However, nothing is perfect. For bytes 0x01..0x03, | |
181 | * it's really hard to decide whether they're mouse or keyboard bytes. Since | |
182 | * overruns usually occur when moving the Atari mouse rapidly, they're seen as | |
183 | * mouse bytes here. If this is wrong, only a make code of the keyboard gets | |
184 | * lost, which isn't too bad. Loosing a break code would be disastrous, | |
185 | * because then the keyboard repeat strikes... | |
186 | */ | |
187 | ||
188 | static irqreturn_t atari_keyboard_interrupt(int irq, void *dummy) | |
189 | { | |
190 | u_char acia_stat; | |
191 | int scancode; | |
192 | int break_flag; | |
193 | ||
194 | repeat: | |
195 | if (acia.mid_ctrl & ACIA_IRQ) | |
196 | if (atari_MIDI_interrupt_hook) | |
197 | atari_MIDI_interrupt_hook(); | |
198 | acia_stat = acia.key_ctrl; | |
199 | /* check out if the interrupt came from this ACIA */ | |
200 | if (!((acia_stat | acia.mid_ctrl) & ACIA_IRQ)) | |
201 | return IRQ_HANDLED; | |
202 | ||
203 | if (acia_stat & ACIA_OVRN) { | |
204 | /* a very fast typist or a slow system, give a warning */ | |
205 | /* ...happens often if interrupts were disabled for too long */ | |
206 | printk(KERN_DEBUG "Keyboard overrun\n"); | |
207 | scancode = acia.key_data; | |
208 | /* Turn off autorepeating in case a break code has been lost */ | |
209 | del_timer(&atakeyb_rep_timer); | |
210 | rep_scancode = 0; | |
211 | if (ikbd_self_test) | |
212 | /* During self test, don't do resyncing, just process the code */ | |
213 | goto interpret_scancode; | |
214 | else if (IS_SYNC_CODE(scancode)) { | |
215 | /* This code seem already to be the start of a new packet or a | |
216 | * single scancode */ | |
217 | kb_state.state = KEYBOARD; | |
218 | goto interpret_scancode; | |
219 | } else { | |
220 | /* Go to RESYNC state and skip this byte */ | |
221 | kb_state.state = RESYNC; | |
222 | kb_state.len = 1; /* skip max. 1 another byte */ | |
223 | goto repeat; | |
224 | } | |
225 | } | |
226 | ||
227 | if (acia_stat & ACIA_RDRF) { | |
228 | /* received a character */ | |
229 | scancode = acia.key_data; /* get it or reset the ACIA, I'll get it! */ | |
230 | tasklet_schedule(&keyboard_tasklet); | |
231 | interpret_scancode: | |
232 | switch (kb_state.state) { | |
233 | case KEYBOARD: | |
234 | switch (scancode) { | |
235 | case 0xF7: | |
236 | kb_state.state = AMOUSE; | |
237 | kb_state.len = 0; | |
238 | break; | |
239 | ||
240 | case 0xF8: | |
241 | case 0xF9: | |
242 | case 0xFA: | |
243 | case 0xFB: | |
244 | kb_state.state = RMOUSE; | |
245 | kb_state.len = 1; | |
246 | kb_state.buf[0] = scancode; | |
247 | break; | |
248 | ||
249 | case 0xFC: | |
250 | kb_state.state = CLOCK; | |
251 | kb_state.len = 0; | |
252 | break; | |
253 | ||
254 | case 0xFE: | |
255 | case 0xFF: | |
256 | kb_state.state = JOYSTICK; | |
257 | kb_state.len = 1; | |
258 | kb_state.buf[0] = scancode; | |
259 | break; | |
260 | ||
261 | case 0xF1: | |
262 | /* during self-test, note that 0xf1 received */ | |
263 | if (ikbd_self_test) { | |
264 | ++ikbd_self_test; | |
265 | self_test_last_rcv = jiffies; | |
266 | break; | |
267 | } | |
268 | /* FALL THROUGH */ | |
269 | ||
270 | default: | |
271 | break_flag = scancode & BREAK_MASK; | |
272 | scancode &= ~BREAK_MASK; | |
273 | if (ikbd_self_test) { | |
274 | /* Scancodes sent during the self-test stand for broken | |
275 | * keys (keys being down). The code *should* be a break | |
276 | * code, but nevertheless some AT keyboard interfaces send | |
277 | * make codes instead. Therefore, simply ignore | |
278 | * break_flag... | |
279 | */ | |
280 | int keyval = plain_map[scancode], keytyp; | |
281 | ||
282 | set_bit(scancode, broken_keys); | |
283 | self_test_last_rcv = jiffies; | |
284 | keyval = plain_map[scancode]; | |
285 | keytyp = KTYP(keyval) - 0xf0; | |
286 | keyval = KVAL(keyval); | |
287 | ||
288 | printk(KERN_WARNING "Key with scancode %d ", scancode); | |
289 | if (keytyp == KT_LATIN || keytyp == KT_LETTER) { | |
290 | if (keyval < ' ') | |
291 | printk("('^%c') ", keyval + '@'); | |
292 | else | |
293 | printk("('%c') ", keyval); | |
294 | } | |
295 | printk("is broken -- will be ignored.\n"); | |
296 | break; | |
297 | } else if (test_bit(scancode, broken_keys)) | |
298 | break; | |
299 | ||
300 | #if 0 // FIXME; hangs at boot | |
301 | if (break_flag) { | |
302 | del_timer(&atakeyb_rep_timer); | |
303 | rep_scancode = 0; | |
304 | } else { | |
305 | del_timer(&atakeyb_rep_timer); | |
306 | rep_scancode = scancode; | |
307 | atakeyb_rep_timer.expires = jiffies + key_repeat_delay; | |
308 | add_timer(&atakeyb_rep_timer); | |
309 | } | |
310 | #endif | |
311 | ||
312 | // handle_scancode(scancode, !break_flag); | |
313 | if (atari_input_keyboard_interrupt_hook) | |
314 | atari_input_keyboard_interrupt_hook((unsigned char)scancode, !break_flag); | |
315 | break; | |
316 | } | |
317 | break; | |
318 | ||
319 | case AMOUSE: | |
320 | kb_state.buf[kb_state.len++] = scancode; | |
321 | if (kb_state.len == 5) { | |
322 | kb_state.state = KEYBOARD; | |
323 | /* not yet used */ | |
324 | /* wake up someone waiting for this */ | |
325 | } | |
326 | break; | |
327 | ||
328 | case RMOUSE: | |
329 | kb_state.buf[kb_state.len++] = scancode; | |
330 | if (kb_state.len == 3) { | |
331 | kb_state.state = KEYBOARD; | |
332 | if (atari_mouse_interrupt_hook) | |
333 | atari_mouse_interrupt_hook(kb_state.buf); | |
334 | } | |
335 | break; | |
336 | ||
337 | case JOYSTICK: | |
338 | kb_state.buf[1] = scancode; | |
339 | kb_state.state = KEYBOARD; | |
340 | #ifdef FIXED_ATARI_JOYSTICK | |
341 | atari_joystick_interrupt(kb_state.buf); | |
342 | #endif | |
343 | break; | |
344 | ||
345 | case CLOCK: | |
346 | kb_state.buf[kb_state.len++] = scancode; | |
347 | if (kb_state.len == 6) { | |
348 | kb_state.state = KEYBOARD; | |
349 | /* wake up someone waiting for this. | |
350 | But will this ever be used, as Linux keeps its own time. | |
351 | Perhaps for synchronization purposes? */ | |
352 | /* wake_up_interruptible(&clock_wait); */ | |
353 | } | |
354 | break; | |
355 | ||
356 | case RESYNC: | |
357 | if (kb_state.len <= 0 || IS_SYNC_CODE(scancode)) { | |
358 | kb_state.state = KEYBOARD; | |
359 | goto interpret_scancode; | |
360 | } | |
361 | kb_state.len--; | |
362 | break; | |
363 | } | |
364 | } | |
365 | ||
366 | #if 0 | |
367 | if (acia_stat & ACIA_CTS) | |
368 | /* cannot happen */; | |
369 | #endif | |
370 | ||
371 | if (acia_stat & (ACIA_FE | ACIA_PE)) { | |
372 | printk("Error in keyboard communication\n"); | |
373 | } | |
374 | ||
375 | /* handle_scancode() can take a lot of time, so check again if | |
376 | * some character arrived | |
377 | */ | |
378 | goto repeat; | |
379 | } | |
380 | ||
381 | /* | |
382 | * I write to the keyboard without using interrupts, I poll instead. | |
383 | * This takes for the maximum length string allowed (7) at 7812.5 baud | |
384 | * 8 data 1 start 1 stop bit: 9.0 ms | |
385 | * If this takes too long for normal operation, interrupt driven writing | |
386 | * is the solution. (I made a feeble attempt in that direction but I | |
387 | * kept it simple for now.) | |
388 | */ | |
389 | void ikbd_write(const char *str, int len) | |
390 | { | |
391 | u_char acia_stat; | |
392 | ||
393 | if ((len < 1) || (len > 7)) | |
394 | panic("ikbd: maximum string length exceeded"); | |
395 | while (len) { | |
396 | acia_stat = acia.key_ctrl; | |
397 | if (acia_stat & ACIA_TDRE) { | |
398 | acia.key_data = *str++; | |
399 | len--; | |
400 | } | |
401 | } | |
402 | } | |
403 | ||
404 | /* Reset (without touching the clock) */ | |
405 | void ikbd_reset(void) | |
406 | { | |
407 | static const char cmd[2] = { 0x80, 0x01 }; | |
408 | ||
409 | ikbd_write(cmd, 2); | |
410 | ||
411 | /* | |
412 | * if all's well code 0xF1 is returned, else the break codes of | |
413 | * all keys making contact | |
414 | */ | |
415 | } | |
416 | ||
417 | /* Set mouse button action */ | |
418 | void ikbd_mouse_button_action(int mode) | |
419 | { | |
420 | char cmd[2] = { 0x07, mode }; | |
421 | ||
422 | ikbd_write(cmd, 2); | |
423 | } | |
424 | ||
425 | /* Set relative mouse position reporting */ | |
426 | void ikbd_mouse_rel_pos(void) | |
427 | { | |
428 | static const char cmd[1] = { 0x08 }; | |
429 | ||
430 | ikbd_write(cmd, 1); | |
431 | } | |
432 | ||
433 | /* Set absolute mouse position reporting */ | |
434 | void ikbd_mouse_abs_pos(int xmax, int ymax) | |
435 | { | |
436 | char cmd[5] = { 0x09, xmax>>8, xmax&0xFF, ymax>>8, ymax&0xFF }; | |
437 | ||
438 | ikbd_write(cmd, 5); | |
439 | } | |
440 | ||
441 | /* Set mouse keycode mode */ | |
442 | void ikbd_mouse_kbd_mode(int dx, int dy) | |
443 | { | |
444 | char cmd[3] = { 0x0A, dx, dy }; | |
445 | ||
446 | ikbd_write(cmd, 3); | |
447 | } | |
448 | ||
449 | /* Set mouse threshold */ | |
450 | void ikbd_mouse_thresh(int x, int y) | |
451 | { | |
452 | char cmd[3] = { 0x0B, x, y }; | |
453 | ||
454 | ikbd_write(cmd, 3); | |
455 | } | |
456 | ||
457 | /* Set mouse scale */ | |
458 | void ikbd_mouse_scale(int x, int y) | |
459 | { | |
460 | char cmd[3] = { 0x0C, x, y }; | |
461 | ||
462 | ikbd_write(cmd, 3); | |
463 | } | |
464 | ||
465 | /* Interrogate mouse position */ | |
466 | void ikbd_mouse_pos_get(int *x, int *y) | |
467 | { | |
468 | static const char cmd[1] = { 0x0D }; | |
469 | ||
470 | ikbd_write(cmd, 1); | |
471 | ||
472 | /* wait for returning bytes */ | |
473 | } | |
474 | ||
475 | /* Load mouse position */ | |
476 | void ikbd_mouse_pos_set(int x, int y) | |
477 | { | |
478 | char cmd[6] = { 0x0E, 0x00, x>>8, x&0xFF, y>>8, y&0xFF }; | |
479 | ||
480 | ikbd_write(cmd, 6); | |
481 | } | |
482 | ||
483 | /* Set Y=0 at bottom */ | |
484 | void ikbd_mouse_y0_bot(void) | |
485 | { | |
486 | static const char cmd[1] = { 0x0F }; | |
487 | ||
488 | ikbd_write(cmd, 1); | |
489 | } | |
490 | ||
491 | /* Set Y=0 at top */ | |
492 | void ikbd_mouse_y0_top(void) | |
493 | { | |
494 | static const char cmd[1] = { 0x10 }; | |
495 | ||
496 | ikbd_write(cmd, 1); | |
497 | } | |
498 | ||
499 | /* Resume */ | |
500 | void ikbd_resume(void) | |
501 | { | |
502 | static const char cmd[1] = { 0x11 }; | |
503 | ||
504 | ikbd_write(cmd, 1); | |
505 | } | |
506 | ||
507 | /* Disable mouse */ | |
508 | void ikbd_mouse_disable(void) | |
509 | { | |
510 | static const char cmd[1] = { 0x12 }; | |
511 | ||
512 | ikbd_write(cmd, 1); | |
513 | } | |
514 | ||
515 | /* Pause output */ | |
516 | void ikbd_pause(void) | |
517 | { | |
518 | static const char cmd[1] = { 0x13 }; | |
519 | ||
520 | ikbd_write(cmd, 1); | |
521 | } | |
522 | ||
523 | /* Set joystick event reporting */ | |
524 | void ikbd_joystick_event_on(void) | |
525 | { | |
526 | static const char cmd[1] = { 0x14 }; | |
527 | ||
528 | ikbd_write(cmd, 1); | |
529 | } | |
530 | ||
531 | /* Set joystick interrogation mode */ | |
532 | void ikbd_joystick_event_off(void) | |
533 | { | |
534 | static const char cmd[1] = { 0x15 }; | |
535 | ||
536 | ikbd_write(cmd, 1); | |
537 | } | |
538 | ||
539 | /* Joystick interrogation */ | |
540 | void ikbd_joystick_get_state(void) | |
541 | { | |
542 | static const char cmd[1] = { 0x16 }; | |
543 | ||
544 | ikbd_write(cmd, 1); | |
545 | } | |
546 | ||
547 | #if 0 | |
548 | /* This disables all other ikbd activities !!!! */ | |
549 | /* Set joystick monitoring */ | |
550 | void ikbd_joystick_monitor(int rate) | |
551 | { | |
552 | static const char cmd[2] = { 0x17, rate }; | |
553 | ||
554 | ikbd_write(cmd, 2); | |
555 | ||
556 | kb_state.state = JOYSTICK_MONITOR; | |
557 | } | |
558 | #endif | |
559 | ||
560 | /* some joystick routines not in yet (0x18-0x19) */ | |
561 | ||
562 | /* Disable joysticks */ | |
563 | void ikbd_joystick_disable(void) | |
564 | { | |
565 | static const char cmd[1] = { 0x1A }; | |
566 | ||
567 | ikbd_write(cmd, 1); | |
568 | } | |
569 | ||
570 | /* Time-of-day clock set */ | |
571 | void ikbd_clock_set(int year, int month, int day, int hour, int minute, int second) | |
572 | { | |
573 | char cmd[7] = { 0x1B, year, month, day, hour, minute, second }; | |
574 | ||
575 | ikbd_write(cmd, 7); | |
576 | } | |
577 | ||
578 | /* Interrogate time-of-day clock */ | |
579 | void ikbd_clock_get(int *year, int *month, int *day, int *hour, int *minute, int second) | |
580 | { | |
581 | static const char cmd[1] = { 0x1C }; | |
582 | ||
583 | ikbd_write(cmd, 1); | |
584 | } | |
585 | ||
586 | /* Memory load */ | |
587 | void ikbd_mem_write(int address, int size, char *data) | |
588 | { | |
589 | panic("Attempt to write data into keyboard memory"); | |
590 | } | |
591 | ||
592 | /* Memory read */ | |
593 | void ikbd_mem_read(int address, char data[6]) | |
594 | { | |
595 | char cmd[3] = { 0x21, address>>8, address&0xFF }; | |
596 | ||
597 | ikbd_write(cmd, 3); | |
598 | ||
599 | /* receive data and put it in data */ | |
600 | } | |
601 | ||
602 | /* Controller execute */ | |
603 | void ikbd_exec(int address) | |
604 | { | |
605 | char cmd[3] = { 0x22, address>>8, address&0xFF }; | |
606 | ||
607 | ikbd_write(cmd, 3); | |
608 | } | |
609 | ||
610 | /* Status inquiries (0x87-0x9A) not yet implemented */ | |
611 | ||
612 | /* Set the state of the caps lock led. */ | |
613 | void atari_kbd_leds(unsigned int leds) | |
614 | { | |
615 | char cmd[6] = {32, 0, 4, 1, 254 + ((leds & 4) != 0), 0}; | |
616 | ||
617 | ikbd_write(cmd, 6); | |
618 | } | |
619 | ||
620 | /* | |
621 | * The original code sometimes left the interrupt line of | |
622 | * the ACIAs low forever. I hope, it is fixed now. | |
623 | * | |
624 | * Martin Rogge, 20 Aug 1995 | |
625 | */ | |
626 | ||
627 | static int atari_keyb_done = 0; | |
628 | ||
629 | int __init atari_keyb_init(void) | |
630 | { | |
631 | if (atari_keyb_done) | |
632 | return 0; | |
633 | ||
634 | /* setup key map */ | |
635 | memcpy(key_maps[0], ataplain_map, sizeof(plain_map)); | |
636 | ||
637 | kb_state.state = KEYBOARD; | |
638 | kb_state.len = 0; | |
639 | ||
640 | request_irq(IRQ_MFP_ACIA, atari_keyboard_interrupt, IRQ_TYPE_SLOW, | |
641 | "keyboard/mouse/MIDI", atari_keyboard_interrupt); | |
642 | ||
643 | atari_turnoff_irq(IRQ_MFP_ACIA); | |
644 | do { | |
645 | /* reset IKBD ACIA */ | |
646 | acia.key_ctrl = ACIA_RESET | | |
647 | (atari_switches & ATARI_SWITCH_IKBD) ? ACIA_RHTID : 0; | |
648 | (void)acia.key_ctrl; | |
649 | (void)acia.key_data; | |
650 | ||
651 | /* reset MIDI ACIA */ | |
652 | acia.mid_ctrl = ACIA_RESET | | |
653 | (atari_switches & ATARI_SWITCH_MIDI) ? ACIA_RHTID : 0; | |
654 | (void)acia.mid_ctrl; | |
655 | (void)acia.mid_data; | |
656 | ||
657 | /* divide 500kHz by 64 gives 7812.5 baud */ | |
658 | /* 8 data no parity 1 start 1 stop bit */ | |
659 | /* receive interrupt enabled */ | |
660 | /* RTS low (except if switch selected), transmit interrupt disabled */ | |
661 | acia.key_ctrl = (ACIA_DIV64|ACIA_D8N1S|ACIA_RIE) | | |
662 | ((atari_switches & ATARI_SWITCH_IKBD) ? | |
663 | ACIA_RHTID : ACIA_RLTID); | |
664 | ||
665 | acia.mid_ctrl = ACIA_DIV16 | ACIA_D8N1S | | |
666 | (atari_switches & ATARI_SWITCH_MIDI) ? ACIA_RHTID : 0; | |
667 | ||
668 | /* make sure the interrupt line is up */ | |
669 | } while ((mfp.par_dt_reg & 0x10) == 0); | |
670 | ||
671 | /* enable ACIA Interrupts */ | |
672 | mfp.active_edge &= ~0x10; | |
673 | atari_turnon_irq(IRQ_MFP_ACIA); | |
674 | ||
675 | ikbd_self_test = 1; | |
676 | ikbd_reset(); | |
677 | /* wait for a period of inactivity (here: 0.25s), then assume the IKBD's | |
678 | * self-test is finished */ | |
679 | self_test_last_rcv = jiffies; | |
680 | while (time_before(jiffies, self_test_last_rcv + HZ/4)) | |
681 | barrier(); | |
682 | /* if not incremented: no 0xf1 received */ | |
683 | if (ikbd_self_test == 1) | |
684 | printk(KERN_ERR "WARNING: keyboard self test failed!\n"); | |
685 | ikbd_self_test = 0; | |
686 | ||
687 | ikbd_mouse_disable(); | |
688 | ikbd_joystick_disable(); | |
689 | ||
690 | #ifdef FIXED_ATARI_JOYSTICK | |
691 | atari_joystick_init(); | |
692 | #endif | |
693 | ||
694 | // flag init done | |
695 | atari_keyb_done = 1; | |
696 | return 0; | |
697 | } | |
698 | ||
699 | ||
700 | int atari_kbdrate(struct kbd_repeat *k) | |
701 | { | |
702 | if (k->delay > 0) { | |
703 | /* convert from msec to jiffies */ | |
704 | key_repeat_delay = (k->delay * HZ + 500) / 1000; | |
705 | if (key_repeat_delay < 1) | |
706 | key_repeat_delay = 1; | |
707 | } | |
708 | if (k->period > 0) { | |
709 | key_repeat_rate = (k->period * HZ + 500) / 1000; | |
710 | if (key_repeat_rate < 1) | |
711 | key_repeat_rate = 1; | |
712 | } | |
713 | ||
714 | k->delay = key_repeat_delay * 1000 / HZ; | |
715 | k->period = key_repeat_rate * 1000 / HZ; | |
716 | ||
717 | return 0; | |
718 | } | |
719 | ||
720 | int atari_kbd_translate(unsigned char keycode, unsigned char *keycodep, char raw_mode) | |
721 | { | |
722 | #ifdef CONFIG_MAGIC_SYSRQ | |
723 | /* ALT+HELP pressed? */ | |
724 | if ((keycode == 98) && ((shift_state & 0xff) == 8)) | |
725 | *keycodep = 0xff; | |
726 | else | |
727 | #endif | |
728 | *keycodep = keycode; | |
729 | return 1; | |
730 | } |