lk201: remove obsolete driver

Remove the old-fashioned lk201 driver under drivers/tc/ that used to be
used by the old dz.c and zs.c drivers, which is now orphan code referred to
from nowhere and does not build anymore.  A modern replacement is available
as drivers/input/keyboard/lkkbd.c.

There are no plans to do anything about this piece of code and it does not
fit anywhere anymore, so it is not just a matter of maintenance or the lack
of.  There are still some bits that might be added to the new lkkbd.c
driver based on the old code, and the embedded hardware documentation which
is otherwise quite hard to get hold of might be useful to keep too.  Both
of these can be done separately though.  RIP.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 0 insertions, 439 deletions

diff --git a/drivers/tc/lk201.c b/drivers/tc/lk201.c
deleted file mode 100644
index a90c255f079d..000000000000
--- 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");
-	}
-}