+++ /dev/null
-/*
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1999-2002 Harald Koerfgen <hkoerfg@web.de>
- * Copyright (C) 2001, 2002, 2003, 2004 Maciej W. Rozycki
- */
-
-
-#include <linux/errno.h>
-#include <linux/tty.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/kbd_ll.h>
-#include <linux/kbd_kern.h>
-#include <linux/vt_kern.h>
-
-#include <asm/keyboard.h>
-#include <asm/dec/tc.h>
-#include <asm/dec/machtype.h>
-#include <asm/dec/serial.h>
-
-#include "lk201.h"
-
-/*
- * Only handle DECstations that have an LK201 interface.
- * Maxine uses LK501 at the Access.Bus and various DECsystems
- * have no keyboard interface at all.
- */
-#define LK_IFACE (mips_machtype == MACH_DS23100 || \
- mips_machtype == MACH_DS5000_200 || \
- mips_machtype == MACH_DS5000_1XX || \
- mips_machtype == MACH_DS5000_2X0)
-/*
- * These use the Z8530 SCC. Others use the DZ11.
- */
-#define LK_IFACE_ZS (mips_machtype == MACH_DS5000_1XX || \
- mips_machtype == MACH_DS5000_2X0)
-
-/* Simple translation table for the SysRq keys */
-
-#ifdef CONFIG_MAGIC_SYSRQ
-/*
- * Actually no translation at all, at least until we figure out
- * how to define SysRq for LK201 and friends. --macro
- */
-unsigned char lk201_sysrq_xlate[128];
-unsigned char *kbd_sysrq_xlate = lk201_sysrq_xlate;
-
-unsigned char kbd_sysrq_key = -1;
-#endif
-
-#define KEYB_LINE 3
-
-static int __init lk201_init(void *);
-static void __init lk201_info(void *);
-static void lk201_rx_char(unsigned char, unsigned char);
-
-static struct dec_serial_hook lk201_hook = {
- .init_channel = lk201_init,
- .init_info = lk201_info,
- .rx_char = NULL,
- .poll_rx_char = NULL,
- .poll_tx_char = NULL,
- .cflags = B4800 | CS8 | CSTOPB | CLOCAL,
-};
-
-/*
- * This is used during keyboard initialisation
- */
-static unsigned char lk201_reset_string[] = {
- LK_CMD_SET_DEFAULTS,
- LK_CMD_MODE(LK_MODE_RPT_DOWN, 1),
- LK_CMD_MODE(LK_MODE_RPT_DOWN, 2),
- LK_CMD_MODE(LK_MODE_RPT_DOWN, 3),
- LK_CMD_MODE(LK_MODE_RPT_DOWN, 4),
- LK_CMD_MODE(LK_MODE_DOWN_UP, 5),
- LK_CMD_MODE(LK_MODE_DOWN_UP, 6),
- LK_CMD_MODE(LK_MODE_RPT_DOWN, 7),
- LK_CMD_MODE(LK_MODE_RPT_DOWN, 8),
- LK_CMD_MODE(LK_MODE_RPT_DOWN, 9),
- LK_CMD_MODE(LK_MODE_RPT_DOWN, 10),
- LK_CMD_MODE(LK_MODE_RPT_DOWN, 11),
- LK_CMD_MODE(LK_MODE_RPT_DOWN, 12),
- LK_CMD_MODE(LK_MODE_DOWN, 13),
- LK_CMD_MODE(LK_MODE_RPT_DOWN, 14),
- LK_CMD_DIS_KEYCLK,
- LK_CMD_ENB_BELL, LK_PARAM_VOLUME(4),
-};
-
-static void *lk201_handle;
-
-static int lk201_send(unsigned char ch)
-{
- if (lk201_hook.poll_tx_char(lk201_handle, ch)) {
- printk(KERN_ERR "lk201: transmit timeout\n");
- return -EIO;
- }
- return 0;
-}
-
-static inline int lk201_get_id(void)
-{
- return lk201_send(LK_CMD_REQ_ID);
-}
-
-static int lk201_reset(void)
-{
- int i, r;
-
- for (i = 0; i < sizeof(lk201_reset_string); i++) {
- r = lk201_send(lk201_reset_string[i]);
- if (r < 0)
- return r;
- }
- return 0;
-}
-
-static void lk201_report(unsigned char id[6])
-{
- char *report = "lk201: keyboard attached, ";
-
- switch (id[2]) {
- case LK_STAT_PWRUP_OK:
- printk(KERN_INFO "%sself-test OK\n", report);
- break;
- case LK_STAT_PWRUP_KDOWN:
- /* The keyboard will resend the power-up ID
- after all keys are released, so we don't
- bother handling the error specially. Still
- there may be a short-circuit inside.
- */
- printk(KERN_ERR "%skey down (stuck?), code: 0x%02x\n",
- report, id[3]);
- break;
- case LK_STAT_PWRUP_ERROR:
- printk(KERN_ERR "%sself-test failure\n", report);
- break;
- default:
- printk(KERN_ERR "%sunknown error: 0x%02x\n",
- report, id[2]);
- }
-}
-
-static void lk201_id(unsigned char id[6])
-{
- /*
- * Report whether there is an LK201 or an LK401
- * The LK401 has ALT keys...
- */
- switch (id[4]) {
- case 1:
- printk(KERN_INFO "lk201: LK201 detected\n");
- break;
- case 2:
- printk(KERN_INFO "lk201: LK401 detected\n");
- break;
- case 3:
- printk(KERN_INFO "lk201: LK443 detected\n");
- break;
- case 4:
- printk(KERN_INFO "lk201: LK421 detected\n");
- break;
- default:
- printk(KERN_WARNING
- "lk201: unknown keyboard detected, ID %d\n", id[4]);
- printk(KERN_WARNING "lk201: ... please report to "
- "<linux-mips@linux-mips.org>\n");
- }
-}
-
-#define DEFAULT_KEYB_REP_DELAY (250/5) /* [5ms] */
-#define DEFAULT_KEYB_REP_RATE 30 /* [cps] */
-
-static struct kbd_repeat kbdrate = {
- DEFAULT_KEYB_REP_DELAY,
- DEFAULT_KEYB_REP_RATE
-};
-
-static void parse_kbd_rate(struct kbd_repeat *r)
-{
- if (r->delay <= 0)
- r->delay = kbdrate.delay;
- if (r->rate <= 0)
- r->rate = kbdrate.rate;
-
- if (r->delay < 5)
- r->delay = 5;
- if (r->delay > 630)
- r->delay = 630;
- if (r->rate < 12)
- r->rate = 12;
- if (r->rate > 127)
- r->rate = 127;
- if (r->rate == 125)
- r->rate = 124;
-}
-
-static int write_kbd_rate(struct kbd_repeat *rep)
-{
- int delay, rate;
- int i;
-
- delay = rep->delay / 5;
- rate = rep->rate;
- for (i = 0; i < 4; i++) {
- if (lk201_hook.poll_tx_char(lk201_handle,
- LK_CMD_RPT_RATE(i)))
- return 1;
- if (lk201_hook.poll_tx_char(lk201_handle,
- LK_PARAM_DELAY(delay)))
- return 1;
- if (lk201_hook.poll_tx_char(lk201_handle,
- LK_PARAM_RATE(rate)))
- return 1;
- }
- return 0;
-}
-
-static int lk201_kbd_rate(struct kbd_repeat *rep)
-{
- if (rep == NULL)
- return -EINVAL;
-
- parse_kbd_rate(rep);
-
- if (write_kbd_rate(rep)) {
- memcpy(rep, &kbdrate, sizeof(struct kbd_repeat));
- return -EIO;
- }
-
- memcpy(&kbdrate, rep, sizeof(struct kbd_repeat));
-
- return 0;
-}
-
-static void lk201_kd_mksound(unsigned int hz, unsigned int ticks)
-{
- if (!ticks)
- return;
-
- /*
- * Can't set frequency and we "approximate"
- * duration by volume. ;-)
- */
- ticks /= HZ / 32;
- if (ticks > 7)
- ticks = 7;
- ticks = 7 - ticks;
-
- if (lk201_hook.poll_tx_char(lk201_handle, LK_CMD_ENB_BELL))
- return;
- if (lk201_hook.poll_tx_char(lk201_handle, LK_PARAM_VOLUME(ticks)))
- return;
- if (lk201_hook.poll_tx_char(lk201_handle, LK_CMD_BELL))
- return;
-}
-
-void kbd_leds(unsigned char leds)
-{
- unsigned char l = 0;
-
- if (!lk201_handle) /* FIXME */
- return;
-
- /* FIXME -- Only Hold and Lock LEDs for now. --macro */
- if (leds & LED_SCR)
- l |= LK_LED_HOLD;
- if (leds & LED_CAP)
- l |= LK_LED_LOCK;
-
- if (lk201_hook.poll_tx_char(lk201_handle, LK_CMD_LEDS_ON))
- return;
- if (lk201_hook.poll_tx_char(lk201_handle, LK_PARAM_LED_MASK(l)))
- return;
- if (lk201_hook.poll_tx_char(lk201_handle, LK_CMD_LEDS_OFF))
- return;
- if (lk201_hook.poll_tx_char(lk201_handle, LK_PARAM_LED_MASK(~l)))
- return;
-}
-
-int kbd_setkeycode(unsigned int scancode, unsigned int keycode)
-{
- return -EINVAL;
-}
-
-int kbd_getkeycode(unsigned int scancode)
-{
- return -EINVAL;
-}
-
-int kbd_translate(unsigned char scancode, unsigned char *keycode,
- char raw_mode)
-{
- *keycode = scancode;
- return 1;
-}
-
-char kbd_unexpected_up(unsigned char keycode)
-{
- return 0x80;
-}
-
-static void lk201_rx_char(unsigned char ch, unsigned char fl)
-{
- static unsigned char id[6];
- static int id_i;
-
- static int shift_state = 0;
- static int prev_scancode;
- unsigned char c = scancodeRemap[ch];
-
- if (fl != TTY_NORMAL && fl != TTY_OVERRUN) {
- printk(KERN_ERR "lk201: keyboard receive error: 0x%02x\n", fl);
- return;
- }
-
- /* Assume this is a power-up ID. */
- if (ch == LK_STAT_PWRUP_ID && !id_i) {
- id[id_i++] = ch;
- return;
- }
-
- /* Handle the power-up sequence. */
- if (id_i) {
- id[id_i++] = ch;
- if (id_i == 4) {
- /* OK, the power-up concluded. */
- lk201_report(id);
- if (id[2] == LK_STAT_PWRUP_OK)
- lk201_get_id();
- else {
- id_i = 0;
- printk(KERN_ERR "lk201: keyboard power-up "
- "error, skipping initialization\n");
- }
- } else if (id_i == 6) {
- /* We got the ID; report it and start operation. */
- id_i = 0;
- lk201_id(id);
- lk201_reset();
- }
- return;
- }
-
- /* Everything else is a scancode/status response. */
- id_i = 0;
- switch (ch) {
- case LK_STAT_RESUME_ERR:
- case LK_STAT_ERROR:
- case LK_STAT_INHIBIT_ACK:
- case LK_STAT_TEST_ACK:
- case LK_STAT_MODE_KEYDOWN:
- case LK_STAT_MODE_ACK:
- break;
- case LK_KEY_LOCK:
- shift_state ^= LK_LOCK;
- handle_scancode(c, (shift_state & LK_LOCK) ? 1 : 0);
- break;
- case LK_KEY_SHIFT:
- shift_state ^= LK_SHIFT;
- handle_scancode(c, (shift_state & LK_SHIFT) ? 1 : 0);
- break;
- case LK_KEY_CTRL:
- shift_state ^= LK_CTRL;
- handle_scancode(c, (shift_state & LK_CTRL) ? 1 : 0);
- break;
- case LK_KEY_COMP:
- shift_state ^= LK_COMP;
- handle_scancode(c, (shift_state & LK_COMP) ? 1 : 0);
- break;
- case LK_KEY_RELEASE:
- if (shift_state & LK_SHIFT)
- handle_scancode(scancodeRemap[LK_KEY_SHIFT], 0);
- if (shift_state & LK_CTRL)
- handle_scancode(scancodeRemap[LK_KEY_CTRL], 0);
- if (shift_state & LK_COMP)
- handle_scancode(scancodeRemap[LK_KEY_COMP], 0);
- if (shift_state & LK_LOCK)
- handle_scancode(scancodeRemap[LK_KEY_LOCK], 0);
- shift_state = 0;
- break;
- case LK_KEY_REPEAT:
- handle_scancode(prev_scancode, 1);
- break;
- default:
- prev_scancode = c;
- handle_scancode(c, 1);
- break;
- }
- tasklet_schedule(&keyboard_tasklet);
-}
-
-static void __init lk201_info(void *handle)
-{
-}
-
-static int __init lk201_init(void *handle)
-{
- /* First install handlers. */
- lk201_handle = handle;
- kbd_rate = lk201_kbd_rate;
- kd_mksound = lk201_kd_mksound;
-
- lk201_hook.rx_char = lk201_rx_char;
-
- /* Then just issue a reset -- the handlers will do the rest. */
- lk201_send(LK_CMD_POWER_UP);
-
- return 0;
-}
-
-void __init kbd_init_hw(void)
-{
- /* Maxine uses LK501 at the Access.Bus. */
- if (!LK_IFACE)
- return;
-
- printk(KERN_INFO "lk201: DECstation LK keyboard driver v0.05.\n");
-
- if (LK_IFACE_ZS) {
- /*
- * kbd_init_hw() is being called before
- * rs_init() so just register the kbd hook
- * and let zs_init do the rest :-)
- */
- if (!register_dec_serial_hook(KEYB_LINE, &lk201_hook))
- unregister_dec_serial_hook(KEYB_LINE);
- } else {
- /*
- * TODO: modify dz.c to allow similar hooks
- * for LK201 handling on DS2100, DS3100, and DS5000/200
- */
- printk(KERN_ERR "lk201: support for DZ11 not yet ready.\n");
- }
-}
git.samba.org / sfrench / cifs-2.6.git / blobdiff