/* * * 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/config.h> #include <linux/errno.h> #include <linux/sched.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"); } }