diff options
Diffstat (limited to 'drivers/tc/lk201.c')
| -rw-r--r-- | drivers/tc/lk201.c | 439 |
1 files changed, 0 insertions, 439 deletions
diff --git a/drivers/tc/lk201.c b/drivers/tc/lk201.c deleted file mode 100644 index a90c255..0000000 --- a/drivers/tc/lk201.c +++ /dev/null @@ -1,439 +0,0 @@ -/* - * - * 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"); - } -} |