3 * This file is subject to the terms and conditions of the GNU General Public
4 * License. See the file "COPYING" in the main directory of this archive
7 * Copyright (C) 1999-2002 Harald Koerfgen <hkoerfg@web.de>
8 * Copyright (C) 2001, 2002, 2003 Maciej W. Rozycki <macro@ds2.pg.gda.pl>
11 #include <linux/config.h>
13 #include <linux/errno.h>
14 #include <linux/sched.h>
15 #include <linux/tty.h>
16 #include <linux/kernel.h>
17 #include <linux/init.h>
18 #include <linux/delay.h>
19 #include <linux/kbd_ll.h>
20 #include <linux/kbd_kern.h>
21 #include <linux/vt_kern.h>
23 #include <asm/keyboard.h>
24 #include <asm/dec/tc.h>
25 #include <asm/dec/machtype.h>
31 * Only handle DECstations that have an LK201 interface.
32 * Maxine uses LK501 at the Access.Bus and various DECsystems
33 * have no keyboard interface at all.
35 #define LK_IFACE (mips_machtype == MACH_DS23100 || \
36 mips_machtype == MACH_DS5000_200 || \
37 mips_machtype == MACH_DS5000_1XX || \
38 mips_machtype == MACH_DS5000_2X0)
40 * These use the Z8530 SCC. Others use the DZ11.
42 #define LK_IFACE_ZS (mips_machtype == MACH_DS5000_1XX || \
43 mips_machtype == MACH_DS5000_2X0)
45 /* Simple translation table for the SysRq keys */
47 #ifdef CONFIG_MAGIC_SYSRQ
49 * Actually no translation at all, at least until we figure out
50 * how to define SysRq for LK201 and friends. --macro
52 unsigned char lk201_sysrq_xlate[128];
53 unsigned char *kbd_sysrq_xlate = lk201_sysrq_xlate;
55 unsigned char kbd_sysrq_key = -1;
60 static int __init lk201_init(struct dec_serial *);
61 static void __init lk201_info(struct dec_serial *);
62 static void lk201_kbd_rx_char(unsigned char, unsigned char);
64 struct zs_hook lk201_kbdhook = {
65 .init_channel = lk201_init,
66 .init_info = lk201_info,
70 .cflags = B4800 | CS8 | CSTOPB | CLOCAL
74 * This is used during keyboard initialisation
76 static unsigned char lk201_reset_string[] = {
78 LK_CMD_MODE(LK_MODE_RPT_DOWN, 1),
79 LK_CMD_MODE(LK_MODE_RPT_DOWN, 2),
80 LK_CMD_MODE(LK_MODE_RPT_DOWN, 3),
81 LK_CMD_MODE(LK_MODE_RPT_DOWN, 4),
82 LK_CMD_MODE(LK_MODE_DOWN_UP, 5),
83 LK_CMD_MODE(LK_MODE_DOWN_UP, 6),
84 LK_CMD_MODE(LK_MODE_RPT_DOWN, 7),
85 LK_CMD_MODE(LK_MODE_RPT_DOWN, 8),
86 LK_CMD_MODE(LK_MODE_RPT_DOWN, 9),
87 LK_CMD_MODE(LK_MODE_RPT_DOWN, 10),
88 LK_CMD_MODE(LK_MODE_RPT_DOWN, 11),
89 LK_CMD_MODE(LK_MODE_RPT_DOWN, 12),
90 LK_CMD_MODE(LK_MODE_DOWN, 13),
91 LK_CMD_MODE(LK_MODE_RPT_DOWN, 14),
93 LK_CMD_ENB_BELL, LK_PARAM_VOLUME(4),
96 static struct dec_serial* lk201kbd_info;
98 static int lk201_send(struct dec_serial *info, unsigned char ch)
100 if (info->hook->poll_tx_char(info, ch)) {
101 printk(KERN_ERR "lk201: transmit timeout\n");
107 static inline int lk201_get_id(struct dec_serial *info)
109 return lk201_send(info, LK_CMD_REQ_ID);
112 static int lk201_reset(struct dec_serial *info)
116 for (i = 0; i < sizeof(lk201_reset_string); i++) {
117 r = lk201_send(info, lk201_reset_string[i]);
124 static void lk201_report(unsigned char id[6])
126 char *report = "lk201: keyboard attached, ";
129 case LK_STAT_PWRUP_OK:
130 printk(KERN_INFO "%sself-test OK\n", report);
132 case LK_STAT_PWRUP_KDOWN:
133 /* The keyboard will resend the power-up ID
134 after all keys are released, so we don't
135 bother handling the error specially. Still
136 there may be a short-circuit inside.
138 printk(KERN_ERR "%skey down (stuck?), code: 0x%02x\n",
141 case LK_STAT_PWRUP_ERROR:
142 printk(KERN_ERR "%sself-test failure\n", report);
145 printk(KERN_ERR "%sunknown error: 0x%02x\n",
150 static void lk201_id(unsigned char id[6])
153 * Report whether there is an LK201 or an LK401
154 * The LK401 has ALT keys...
158 printk(KERN_INFO "lk201: LK201 detected\n");
161 printk(KERN_INFO "lk201: LK401 detected\n");
164 printk(KERN_INFO "lk201: LK443 detected\n");
167 printk(KERN_INFO "lk201: LK421 detected\n");
171 "lk201: unknown keyboard detected, ID %d\n", id[4]);
172 printk(KERN_WARNING "lk201: ... please report to "
173 "<linux-mips@linux-mips.org>\n");
177 #define DEFAULT_KEYB_REP_DELAY (250/5) /* [5ms] */
178 #define DEFAULT_KEYB_REP_RATE 30 /* [cps] */
180 static struct kbd_repeat kbdrate = {
181 DEFAULT_KEYB_REP_DELAY,
182 DEFAULT_KEYB_REP_RATE
185 static void parse_kbd_rate(struct kbd_repeat *r)
188 r->delay = kbdrate.delay;
190 r->rate = kbdrate.rate;
204 static int write_kbd_rate(struct kbd_repeat *rep)
206 struct dec_serial* info = lk201kbd_info;
210 delay = rep->delay / 5;
212 for (i = 0; i < 4; i++) {
213 if (info->hook->poll_tx_char(info, LK_CMD_RPT_RATE(i)))
215 if (info->hook->poll_tx_char(info, LK_PARAM_DELAY(delay)))
217 if (info->hook->poll_tx_char(info, LK_PARAM_RATE(rate)))
223 static int lk201kbd_rate(struct kbd_repeat *rep)
230 if (write_kbd_rate(rep)) {
231 memcpy(rep, &kbdrate, sizeof(struct kbd_repeat));
235 memcpy(&kbdrate, rep, sizeof(struct kbd_repeat));
240 static void lk201kd_mksound(unsigned int hz, unsigned int ticks)
242 struct dec_serial* info = lk201kbd_info;
248 * Can't set frequency and we "approximate"
249 * duration by volume. ;-)
256 if (info->hook->poll_tx_char(info, LK_CMD_ENB_BELL))
258 if (info->hook->poll_tx_char(info, LK_PARAM_VOLUME(ticks)))
260 if (info->hook->poll_tx_char(info, LK_CMD_BELL))
264 void kbd_leds(unsigned char leds)
266 struct dec_serial* info = lk201kbd_info;
269 if (!info) /* FIXME */
272 /* FIXME -- Only Hold and Lock LEDs for now. --macro */
278 if (info->hook->poll_tx_char(info, LK_CMD_LEDS_ON))
280 if (info->hook->poll_tx_char(info, LK_PARAM_LED_MASK(l)))
282 if (info->hook->poll_tx_char(info, LK_CMD_LEDS_OFF))
284 if (info->hook->poll_tx_char(info, LK_PARAM_LED_MASK(~l)))
288 int kbd_setkeycode(unsigned int scancode, unsigned int keycode)
293 int kbd_getkeycode(unsigned int scancode)
298 int kbd_translate(unsigned char scancode, unsigned char *keycode,
305 char kbd_unexpected_up(unsigned char keycode)
310 static void lk201_kbd_rx_char(unsigned char ch, unsigned char stat)
312 static unsigned char id[6];
315 static int shift_state = 0;
316 static int prev_scancode;
317 unsigned char c = scancodeRemap[ch];
319 if (stat && stat != TTY_OVERRUN) {
320 printk(KERN_ERR "lk201: keyboard receive error: 0x%02x\n",
325 /* Assume this is a power-up ID. */
326 if (ch == LK_STAT_PWRUP_ID && !id_i) {
331 /* Handle the power-up sequence. */
335 /* OK, the power-up concluded. */
337 if (id[2] == LK_STAT_PWRUP_OK)
338 lk201_get_id(lk201kbd_info);
341 printk(KERN_ERR "lk201: keyboard power-up "
342 "error, skipping initialization\n");
344 } else if (id_i == 6) {
345 /* We got the ID; report it and start operation. */
348 lk201_reset(lk201kbd_info);
353 /* Everything else is a scancode/status response. */
356 case LK_STAT_RESUME_ERR:
358 case LK_STAT_INHIBIT_ACK:
359 case LK_STAT_TEST_ACK:
360 case LK_STAT_MODE_KEYDOWN:
361 case LK_STAT_MODE_ACK:
364 shift_state ^= LK_LOCK;
365 handle_scancode(c, (shift_state & LK_LOCK) ? 1 : 0);
368 shift_state ^= LK_SHIFT;
369 handle_scancode(c, (shift_state & LK_SHIFT) ? 1 : 0);
372 shift_state ^= LK_CTRL;
373 handle_scancode(c, (shift_state & LK_CTRL) ? 1 : 0);
376 shift_state ^= LK_COMP;
377 handle_scancode(c, (shift_state & LK_COMP) ? 1 : 0);
380 if (shift_state & LK_SHIFT)
381 handle_scancode(scancodeRemap[LK_KEY_SHIFT], 0);
382 if (shift_state & LK_CTRL)
383 handle_scancode(scancodeRemap[LK_KEY_CTRL], 0);
384 if (shift_state & LK_COMP)
385 handle_scancode(scancodeRemap[LK_KEY_COMP], 0);
386 if (shift_state & LK_LOCK)
387 handle_scancode(scancodeRemap[LK_KEY_LOCK], 0);
391 handle_scancode(prev_scancode, 1);
395 handle_scancode(c, 1);
398 tasklet_schedule(&keyboard_tasklet);
401 static void __init lk201_info(struct dec_serial *info)
405 static int __init lk201_init(struct dec_serial *info)
407 /* First install handlers. */
408 lk201kbd_info = info;
409 kbd_rate = lk201kbd_rate;
410 kd_mksound = lk201kd_mksound;
412 info->hook->rx_char = lk201_kbd_rx_char;
414 /* Then just issue a reset -- the handlers will do the rest. */
415 lk201_send(info, LK_CMD_POWER_UP);
420 void __init kbd_init_hw(void)
422 extern int register_zs_hook(unsigned int, struct zs_hook *);
423 extern int unregister_zs_hook(unsigned int);
425 /* Maxine uses LK501 at the Access.Bus. */
429 printk(KERN_INFO "lk201: DECstation LK keyboard driver v0.05.\n");
433 * kbd_init_hw() is being called before
434 * rs_init() so just register the kbd hook
435 * and let zs_init do the rest :-)
437 if(!register_zs_hook(KEYB_LINE, &lk201_kbdhook))
438 unregister_zs_hook(KEYB_LINE);
441 * TODO: modify dz.c to allow similar hooks
442 * for LK201 handling on DS2100, DS3100, and DS5000/200
444 printk(KERN_ERR "lk201: support for DZ11 not yet ready.\n");