mk48txx(4): remove obsolete driver

It's no longer used since 58aa35d42975c298ca0adba705c042596303c9f5
and r357455 respectively.

8 files changed, 3 insertions, 804 deletions

diff --git a/ObsoleteFiles.inc b/ObsoleteFiles.inc
index f551bc759399..27f59a757080 100644
--- a/ObsoleteFiles.inc
+++ b/ObsoleteFiles.inc
@@ -36,6 +36,9 @@
 #   xargs -n1 | sort | uniq -d;
 # done
 
+# 20201224: mk48txx(4) removed
+OLD_FILES+=usr/share/man/man4/mk48txx.4.gz
+
 # 20201215: in-tree gdb removed
 OLD_FILES+=usr/libexec/gdb
 OLD_FILES+=usr/libexec/kgdb
diff --git a/share/man/man4/Makefile b/share/man/man4/Makefile
index 626e83a4c4df..c9bf21503096 100644
--- a/share/man/man4/Makefile
+++ b/share/man/man4/Makefile
@@ -286,7 +286,6 @@ MAN=	aac.4 \
 	meteor.4 \
 	mfi.4 \
 	miibus.4 \
-	mk48txx.4 \
 	mld.4 \
 	mlx.4 \
 	mlx4en.4 \
diff --git a/share/man/man4/mk48txx.4 b/share/man/man4/mk48txx.4
deleted file mode 100644
index 30385934f5e8..000000000000
--- a/share/man/man4/mk48txx.4
+++ /dev/null
@@ -1,225 +0,0 @@
-.\"	$NetBSD: mk48txx.4,v 1.16 2009/04/10 17:14:07 joerg Exp $
-.\"
-.\" Copyright (c) 2000, 2002 The NetBSD Foundation, Inc.
-.\" All rights reserved.
-.\"
-.\" This code is derived from software contributed to The NetBSD Foundation
-.\" by Paul Kranenburg.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\"    notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\"    notice, this list of conditions and the following disclaimer in the
-.\"    documentation and/or other materials provided with the distribution.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
-.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
-.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-.\" PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
-.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-.\" POSSIBILITY OF SUCH DAMAGE.
-.\"
-.\" $FreeBSD$
-.\"
-.Dd December 25, 2009
-.Dt MK48TXX 4
-.Os
-.Sh NAME
-.Nm mk48txx
-.Nd
-.Tn Mostek
-time-of-day clock driver
-.Sh SYNOPSIS
-.In sys/eventhandler.h
-.In sys/lock.h
-.In sys/mutex.h
-.In dev/mk48txx/mk48txxvar.h
-.Pp
-To compile this driver into the kernel,
-place the following line in your
-kernel configuration file:
-.Bd -ragged -offset indent
-.Cd "device mk48txx"
-.Ed
-.Sh DESCRIPTION
-The
-.Nm
-driver is a back-end for several models of
-.Tn Mostek
-time-of-day clock chips.
-It provides access methods to retrieve and set date and time for use with the
-.Dq Li clock
-KOBJ interface.
-.Pp
-To tie an instance of this device to the system, use the
-.Fn mk48txx_attach
-function and the mk48txx_softc structure defined as follows:
-.Pp
-.Ft "int"
-.Fn mk48txx_attach "device_t dev"
-.Bd -literal
-typedef uint8_t (*mk48txx_nvrd_t)(device_t dev, int off);
-typedef void (*mk48txx_nvwr_t)(device_t dev, int off, uint8_t v);
-.Ed
-.Bd -literal
-struct mk48txx_softc {
-	struct resource	sc_res;
-	struct mtx	sc_mtx;
-	eventhandler_tag	sc_wet;
-	const char	*sc_model;
-	bus_size_t	sc_nvramsz;
-	bus_size_t	sc_clkoffset;
-	u_int		sc_year0;
-	u_int		sc_flag;
-	mk48txx_nvrd_t	sc_nvrd;
-	mk48txx_nvwr_t	sc_nvwr;
-};
-.Ed
-.Bl -tag -width indent
-.It Fa sc_res
-The bus resource used for accessing the chip's non-volatile memory
-.Pq including the clock registers ,
-which must be supplied by the front-end when using the default access methods
-.Pq see below .
-Otherwise this member is optional.
-.It Fa sc_mtx
-The hardware mutex used when accessing the chip's non-volatile memory
-.Pq including the clock registers ,
-which must be initialized with
-.Dv MTX_DEF
-by the front-end.
-.It Fa sc_wet
-The event handler tag for the watchdog functionality,
-which is registered by the
-.Fn mk48txx_attach
-function if supported by the chip and specified as part of the
-machine-dependent features
-.Pq see below .
-.It Fa sc_model
-The chip model which this instance should serve.
-This member must be set to one of
-.Dq mk48t02 ,
-.Dq mk48t08 ,
-.Dq mk48t18 ,
-or
-.Dq mk48t59
-by the front-end.
-.It Fa sc_nvramsz
-The size of the non-volatile RAM in the
-.Tn Mostek
-chip,
-which is set by the
-.Fn mk48txx_attach
-function.
-.It Fa sc_clkoffset
-The offset into the control registers of the
-.Tn Mostek
-chip,
-which is set by the
-.Fn mk48txx_attach
-function.
-.It Fa sc_year0
-The year offset to be used with the
-.Sq year
-counter of the clock,
-which must be set by the front-end.
-This value is generally dependent on the system configuration in which
-the clock device is mounted.
-For instance, on
-.Tn Sun Microsystems
-machines the convention is to have clock's two-digit year represent
-the year since 1968.
-.It Fa sc_flag
-This flag is used to specify machine-dependent features.
-The following flags are supported:
-.Bl -tag -width ".Dv MK48TXX_WDOG_ENABLE_WDS"
-.It Dv MK48TXX_NO_CENT_ADJUST
-If the resulting date retrieved with the
-.Dq Li clock_gettime() method
-would be earlier than January 1, 1970,
-the driver will assume that the chip's year counter actually represents a
-year in the 21st century.
-This behavior can be overridden by setting this flag,
-which causes the
-.Nm
-driver to respect the clock's century bit instead.
-.It Dv MK48TXX_WDOG_REGISTER
-When this flag is set,
-the
-.Nm
-driver will register as a watchdog via the interface defined in
-.Xr watchdog 9
-if supported by the specific chip model.
-.It Dv MK48TXX_WDOG_ENABLE_WDS
-When this flag is set,
-the
-.Nm
-driver will set the watchdog steering
-.Pq WDS
-bit when enabling the watchdog functionality of the chip.
-enabled
-.Pq see the chip documentation for further information regarding the WDS bit .
-.El
-.It Fa sc_nvread
-.It Fa sc_nvwrite
-These members specify the access methods for reading respectively writing
-clock device registers.
-The default,
-when
-.Dv NULL
-is passed as an access method,
-is to access the chip memory
-.Pq and clock registers
-as if they were direct-mapped using the specified bus resource.
-.Pp
-Otherwise, the driver will call the respective function supplied by the
-front-end to perform the access,
-passing it the offset
-.Va off
-of the chip memory
-.Pq or clock register
-location to be read from or written to, respectively.
-.El
-.Sh HARDWARE
-The following models are supported:
-.Pp
-.Bl -tag -width indent -offset indent -compact
-.It Tn Mostek MK48T02
-.It Tn Mostek MK48T08
-.It Tn Mostek MK48T18
-.It Tn Mostek MK48T59
-.El
-.Sh SEE ALSO
-.Xr intro 4 ,
-.Xr watchdog 9
-.Sh HISTORY
-The
-.Nm mk48txx
-driver appeared in
-.Nx 1.5 .
-The first
-.Fx
-version to include it was
-.Fx 5.0 .
-.Sh AUTHORS
-.An -nosplit
-The
-.Nm
-driver was written for
-.Nx
-by
-.An Paul Kranenburg Aq Mt pk@NetBSD.org .
-It was ported to
-.Fx
-by
-.An Thomas Moestl Aq Mt tmm@FreeBSD.org
-and later on improved by
-.An Marius Strobl Aq Mt marius@FreeBSD.org .
diff --git a/sys/conf/files b/sys/conf/files
index 6f6fcac25bbe..86dce97eb5e8 100644
--- a/sys/conf/files
+++ b/sys/conf/files
@@ -2439,7 +2439,6 @@ dev/mii/ukphy.c			optional miibus | mii
 dev/mii/ukphy_subr.c		optional miibus | mii
 dev/mii/vscphy.c		optional miibus | vscphy
 dev/mii/xmphy.c			optional miibus | xmphy
-dev/mk48txx/mk48txx.c		optional mk48txx
 dev/mlxfw/mlxfw_fsm.c			optional mlxfw \
 	compile-with "${MLXFW_C}"
 dev/mlxfw/mlxfw_mfa2.c			optional mlxfw \
diff --git a/sys/dev/mk48txx/mk48txx.c b/sys/dev/mk48txx/mk48txx.c
deleted file mode 100644
index 04867b14c0f2..000000000000
--- a/sys/dev/mk48txx/mk48txx.c
+++ /dev/null
@@ -1,332 +0,0 @@
-/*-
- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
- *
- * Copyright (c) 2000 The NetBSD Foundation, Inc.
- * All rights reserved.
- *
- * This code is derived from software contributed to The NetBSD Foundation
- * by Paul Kranenburg.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
- * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- *	$NetBSD: mk48txx.c,v 1.25 2008/04/28 20:23:50 martin Exp $
- */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-/*
- * Mostek MK48T02, MK48T08, MK48T18, MK48T37 and MK48T59 time-of-day chip
- * subroutines
- */
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/bus.h>
-#include <sys/clock.h>
-#include <sys/eventhandler.h>
-#include <sys/lock.h>
-#include <sys/mutex.h>
-#include <sys/rman.h>
-#include <sys/watchdog.h>
-
-#include <machine/bus.h>
-
-#include <dev/mk48txx/mk48txxreg.h>
-#include <dev/mk48txx/mk48txxvar.h>
-
-#include "clock_if.h"
-
-static uint8_t	mk48txx_def_nvrd(device_t dev, int off);
-static void	mk48txx_def_nvwr(device_t dev, int off, uint8_t v);
-static void	mk48txx_watchdog(void *arg, u_int cmd, int *error);
-
-static const struct {
-	const char *name;
-	bus_size_t nvramsz;
-	bus_size_t clkoff;
-	u_int flags;
-#define	MK48TXX_EXT_REGISTERS	1	/* Has extended register set. */
-} mk48txx_models[] = {
-	{ "mk48t02", MK48T02_CLKSZ, MK48T02_CLKOFF, 0 },
-	{ "mk48t08", MK48T08_CLKSZ, MK48T08_CLKOFF, 0 },
-	{ "mk48t18", MK48T18_CLKSZ, MK48T18_CLKOFF, 0 },
-	{ "mk48t37", MK48T37_CLKSZ, MK48T37_CLKOFF, MK48TXX_EXT_REGISTERS },
-	{ "mk48t59", MK48T59_CLKSZ, MK48T59_CLKOFF, MK48TXX_EXT_REGISTERS },
-};
-
-int
-mk48txx_attach(device_t dev)
-{
-	struct mk48txx_softc *sc;
-	int i;
-	uint8_t wday;
-
-	sc = device_get_softc(dev);
-
-	if (mtx_initialized(&sc->sc_mtx) == 0) {
-		device_printf(dev, "%s: mutex not initialized\n", __func__);
-		return (ENXIO);
-	}
-
-	device_printf(dev, "model %s", sc->sc_model);
-	i = sizeof(mk48txx_models) / sizeof(mk48txx_models[0]);
-	while (--i >= 0) {
-		if (strcmp(sc->sc_model, mk48txx_models[i].name) == 0) {
-			break;
-		}
-	}
-	if (i < 0) {
-		device_printf(dev, " (unsupported)\n");
-		return (ENXIO);
-	}
-	printf("\n");
-	sc->sc_nvramsz = mk48txx_models[i].nvramsz;
-	sc->sc_clkoffset = mk48txx_models[i].clkoff;
-
-	if (sc->sc_nvrd == NULL)
-		sc->sc_nvrd = mk48txx_def_nvrd;
-	if (sc->sc_nvwr == NULL)
-		sc->sc_nvwr = mk48txx_def_nvwr;
-
-	if (mk48txx_models[i].flags & MK48TXX_EXT_REGISTERS) {
-		mtx_lock(&sc->sc_mtx);
-		if ((*sc->sc_nvrd)(dev, sc->sc_clkoffset + MK48TXX_FLAGS) &
-		    MK48TXX_FLAGS_BL) {
-			mtx_unlock(&sc->sc_mtx);
-			device_printf(dev, "%s: battery low\n", __func__);
-			return (ENXIO);
-		}
-		mtx_unlock(&sc->sc_mtx);
-	}
-
-	if (sc->sc_flag & MK48TXX_NO_CENT_ADJUST) {
-		/*
-		 * Use MK48TXX_WDAY_CB instead of manually adjusting the
-		 * century.
-		 */
-		if (!(mk48txx_models[i].flags & MK48TXX_EXT_REGISTERS)) {
-			device_printf(dev, "%s: no century bit\n", __func__);
-			return (ENXIO);
-		} else {
-			mtx_lock(&sc->sc_mtx);
-			wday = (*sc->sc_nvrd)
-			    (dev, sc->sc_clkoffset + MK48TXX_IWDAY);
-			wday |= MK48TXX_WDAY_CEB;
-			(*sc->sc_nvwr)
-			    (dev, sc->sc_clkoffset + MK48TXX_IWDAY, wday);
-			mtx_unlock(&sc->sc_mtx);
-		}
-	}
-
-	clock_register(dev, 1000000);	/* 1 second resolution */
-
-	if ((sc->sc_flag & MK48TXX_WDOG_REGISTER) &&
-	    (mk48txx_models[i].flags & MK48TXX_EXT_REGISTERS)) {
-		sc->sc_wet = EVENTHANDLER_REGISTER(watchdog_list,
-		    mk48txx_watchdog, dev, 0);
-		device_printf(dev,
-		    "watchdog registered, timeout interval max. 128 sec\n");
-	}
-
-	return (0);
-}
-
-/*
- * Get time-of-day and convert to a `struct timespec'
- * Return 0 on success; an error number otherwise.
- */
-int
-mk48txx_gettime(device_t dev, struct timespec *ts)
-{
-	struct mk48txx_softc *sc;
-	bus_size_t clkoff;
-	struct clocktime ct;
-	int year;
-	uint8_t csr;
-
-	sc = device_get_softc(dev);
-	clkoff = sc->sc_clkoffset;
-
-	mtx_lock(&sc->sc_mtx);
-	/* enable read (stop time) */
-	csr = (*sc->sc_nvrd)(dev, clkoff + MK48TXX_ICSR);
-	csr |= MK48TXX_CSR_READ;
-	(*sc->sc_nvwr)(dev, clkoff + MK48TXX_ICSR, csr);
-
-#define	FROMREG(reg, mask)	((*sc->sc_nvrd)(dev, clkoff + (reg)) & (mask))
-
-	ct.nsec = 0;
-	ct.sec = FROMBCD(FROMREG(MK48TXX_ISEC, MK48TXX_SEC_MASK));
-	ct.min = FROMBCD(FROMREG(MK48TXX_IMIN, MK48TXX_MIN_MASK));
-	ct.hour = FROMBCD(FROMREG(MK48TXX_IHOUR, MK48TXX_HOUR_MASK));
-	ct.day = FROMBCD(FROMREG(MK48TXX_IDAY, MK48TXX_DAY_MASK));
-#if 0
-	/* Map dow from 1 - 7 to 0 - 6; FROMBCD() isn't necessary here. */
-	ct.dow = FROMREG(MK48TXX_IWDAY, MK48TXX_WDAY_MASK) - 1;
-#else
-	/*
-	 * Set dow = -1 because some drivers (for example the NetBSD and
-	 * OpenBSD mk48txx(4)) don't set it correctly.
-	 */
-	ct.dow = -1;
-#endif
-	ct.mon = FROMBCD(FROMREG(MK48TXX_IMON, MK48TXX_MON_MASK));
-	year = FROMBCD(FROMREG(MK48TXX_IYEAR, MK48TXX_YEAR_MASK));
-	year += sc->sc_year0;
-	if (sc->sc_flag & MK48TXX_NO_CENT_ADJUST)
-		year += (FROMREG(MK48TXX_IWDAY, MK48TXX_WDAY_CB) >>
-		    MK48TXX_WDAY_CB_SHIFT) * 100;
-	else if (year < POSIX_BASE_YEAR)
-		year += 100;
-
-#undef FROMREG
-
-	ct.year = year;
-
-	/* time wears on */
-	csr = (*sc->sc_nvrd)(dev, clkoff + MK48TXX_ICSR);
-	csr &= ~MK48TXX_CSR_READ;
-	(*sc->sc_nvwr)(dev, clkoff + MK48TXX_ICSR, csr);
-	mtx_unlock(&sc->sc_mtx);
-
-	return (clock_ct_to_ts(&ct, ts));
-}
-
-/*
- * Set the time-of-day clock based on the value of the `struct timespec' arg.
- * Return 0 on success; an error number otherwise.
- */
-int
-mk48txx_settime(device_t dev, struct timespec *ts)
-{
-	struct mk48txx_softc *sc;
-	bus_size_t clkoff;
-	struct clocktime ct;
-	uint8_t csr;
-	int cent, year;
-
-	sc = device_get_softc(dev);
-	clkoff = sc->sc_clkoffset;
-
-	/* Accuracy is only one second. */
-	if (ts->tv_nsec >= 500000000)
-		ts->tv_sec++;
-	ts->tv_nsec = 0;
-	clock_ts_to_ct(ts, &ct);
-
-	mtx_lock(&sc->sc_mtx);
-	/* enable write */
-	csr = (*sc->sc_nvrd)(dev, clkoff + MK48TXX_ICSR);
-	csr |= MK48TXX_CSR_WRITE;
-	(*sc->sc_nvwr)(dev, clkoff + MK48TXX_ICSR, csr);
-
-#define	TOREG(reg, mask, val)						\
-	((*sc->sc_nvwr)(dev, clkoff + (reg),				\
-	((*sc->sc_nvrd)(dev, clkoff + (reg)) & ~(mask)) |		\
-	((val) & (mask))))
-
-	TOREG(MK48TXX_ISEC, MK48TXX_SEC_MASK, TOBCD(ct.sec));
-	TOREG(MK48TXX_IMIN, MK48TXX_MIN_MASK, TOBCD(ct.min));
-	TOREG(MK48TXX_IHOUR, MK48TXX_HOUR_MASK, TOBCD(ct.hour));
-	/* Map dow from 0 - 6 to 1 - 7; TOBCD() isn't necessary here. */
-	TOREG(MK48TXX_IWDAY, MK48TXX_WDAY_MASK, ct.dow + 1);
-	TOREG(MK48TXX_IDAY, MK48TXX_DAY_MASK, TOBCD(ct.day));
-	TOREG(MK48TXX_IMON, MK48TXX_MON_MASK, TOBCD(ct.mon));
-
-	year = ct.year - sc->sc_year0;
-	if (sc->sc_flag & MK48TXX_NO_CENT_ADJUST) {
-		cent = year / 100;
-		TOREG(MK48TXX_IWDAY, MK48TXX_WDAY_CB,
-		    cent << MK48TXX_WDAY_CB_SHIFT);
-		year -= cent * 100;
-	} else if (year > 99)
-		year -= 100;
-	TOREG(MK48TXX_IYEAR, MK48TXX_YEAR_MASK, TOBCD(year));
-
-#undef TOREG
-
-	/* load them up */
-	csr = (*sc->sc_nvrd)(dev, clkoff + MK48TXX_ICSR);
-	csr &= ~MK48TXX_CSR_WRITE;
-	(*sc->sc_nvwr)(dev, clkoff + MK48TXX_ICSR, csr);
-	mtx_unlock(&sc->sc_mtx);
-	return (0);
-}
-
-static uint8_t
-mk48txx_def_nvrd(device_t dev, int off)
-{
-	struct mk48txx_softc *sc;
-
-	sc = device_get_softc(dev);
-	return (bus_read_1(sc->sc_res, off));
-}
-
-static void
-mk48txx_def_nvwr(device_t dev, int off, uint8_t v)
-{
-	struct mk48txx_softc *sc;
-
-	sc = device_get_softc(dev);
-	bus_write_1(sc->sc_res, off, v);
-}
-
-static void
-mk48txx_watchdog(void *arg, u_int cmd, int *error)
-{
-	device_t dev;
-	struct mk48txx_softc *sc;
-	uint8_t t, wdog;
-
-	dev = arg;
-	sc = device_get_softc(dev);
-
-	t = cmd & WD_INTERVAL;
-	if (t >= 26 && t <= 37) {
-		wdog = 0;
-		if (t <= WD_TO_2SEC) {
-			wdog |= MK48TXX_WDOG_RB_1_16;
-			t -= 26;
-		} else if (t <= WD_TO_8SEC) {
-			wdog |= MK48TXX_WDOG_RB_1_4;
-			t -= WD_TO_250MS;
-		} else if (t <= WD_TO_32SEC) {
-			wdog |= MK48TXX_WDOG_RB_1;
-			t -= WD_TO_1SEC;
-		} else {
-			wdog |= MK48TXX_WDOG_RB_4;
-			t -= WD_TO_4SEC;
-		}
-		wdog |= (min(1 << t,
-		    MK48TXX_WDOG_BMB_MASK >> MK48TXX_WDOG_BMB_SHIFT)) <<
-		    MK48TXX_WDOG_BMB_SHIFT;
-		if (sc->sc_flag & MK48TXX_WDOG_ENABLE_WDS)
-			wdog |= MK48TXX_WDOG_WDS;
-		*error = 0;
-	} else {
-		wdog = 0;
-	}
-	mtx_lock(&sc->sc_mtx);
-	(*sc->sc_nvwr)(dev, sc->sc_clkoffset + MK48TXX_WDOG, wdog);
-	mtx_unlock(&sc->sc_mtx);
-}
diff --git a/sys/dev/mk48txx/mk48txxreg.h b/sys/dev/mk48txx/mk48txxreg.h
deleted file mode 100644
index 7ff432c4b3b7..000000000000
--- a/sys/dev/mk48txx/mk48txxreg.h
+++ /dev/null
@@ -1,161 +0,0 @@
-/*-
- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
- *
- * Copyright (c) 2000 The NetBSD Foundation, Inc.
- * All rights reserved.
- *
- * This code is derived from software contributed to The NetBSD Foundation
- * by Paul Kranenburg.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
- * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- *	$NetBSD: mk48txxreg.h,v 1.10 2008/04/28 20:23:50 martin Exp $
- *
- * $FreeBSD$
- */
-
-/*
- * Mostek MK48Txx clocks.
- *
- * The MK48T02 has 2KB of non-volatile memory. The time-of-day clock
- * registers start at offset 0x7f8.
- *
- * The MK48T08 and MK48T18 have 8KB of non-volatile memory
- *
- * The MK48T59 also has 8KB of non-volatile memory but in addition it
- * has a battery low detection bit and a power supply wakeup alarm for
- * power management.  It's at offset 0x1ff0 in the NVRAM.
- */
-
-/*
- * Mostek MK48TXX register definitions
- */
-
-/*
- * The first bank of eight registers at offset (nvramsz - 16) is
- * available only on recenter (which?) MK48Txx models.
- */
-#define	MK48TXX_FLAGS	0	/* flags register */
-#define	MK48TXX_UNUSED	1	/* unused */
-#define	MK48TXX_ASEC	2	/* alarm seconds (0..59; BCD) */
-#define	MK48TXX_AMIN	3	/* alarm minutes (0..59; BCD) */
-#define	MK48TXX_AHOUR	4	/* alarm hours (0..23; BCD) */
-#define	MK48TXX_ADAY	5	/* alarm day in month (1..31; BCD) */
-#define	MK48TXX_INTR	6	/* interrupts register */
-#define	MK48TXX_WDOG	7	/* watchdog register */
-
-#define	MK48TXX_ICSR	8	/* control register */
-#define	MK48TXX_ISEC	9	/* seconds (0..59; BCD) */
-#define	MK48TXX_IMIN	10	/* minutes (0..59; BCD) */
-#define	MK48TXX_IHOUR	11	/* hours (0..23; BCD) */
-#define	MK48TXX_IWDAY	12	/* weekday (1..7) */
-#define	MK48TXX_IDAY	13	/* day in month (1..31; BCD) */
-#define	MK48TXX_IMON	14	/* month (1..12; BCD) */
-#define	MK48TXX_IYEAR	15	/* year (0..99; BCD) */
-
-/*
- * Note that some of the bits below that are not in the first eight
- * registers are also only available on models with an extended
- * register set.
- */
-
-/* Bits in the flags register (extended only) */
-#define	MK48TXX_FLAGS_BL	0x10	/* battery low (read only) */
-#define	MK48TXX_FLAGS_AF	0x40	/* alarm flag (read only) */
-#define	MK48TXX_FLAGS_WDF	0x80	/* watchdog flag (read only) */
-
-/* Bits in the alarm seconds register (extended only) */
-#define	MK48TXX_ASEC_MASK	0x7f	/* mask for alarm seconds */
-#define	MK48TXX_ASEC_RPT1	0x80	/* alarm repeat mode bit 1 */
-
-/* Bits in the alarm minutes register (extended only) */
-#define	MK48TXX_AMIN_MASK	0x7f	/* mask for alarm minutes */
-#define	MK48TXX_AMIN_RPT2	0x80	/* alarm repeat mode bit 2 */
-
-/* Bits in the alarm hours register (extended only) */
-#define	MK48TXX_AHOUR_MASK	0x3f	/* mask for alarm hours */
-#define	MK48TXX_AHOUR_RPT3	0x80	/* alarm repeat mode bit 3 */
-
-/* Bits in the alarm day in month register (extended only) */
-#define	MK48TXX_ADAY_MASK	0x3f	/* mask for alarm day in month */
-#define	MK48TXX_ADAY_RPT4	0x80	/* alarm repeat mode bit 4 */
-
-/* Bits in the interrupts register (extended only) */
-#define	MK48TXX_INTR_ABE	0x20	/* alarm in battery back-up mode */
-#define	MK48TXX_INTR_AFE	0x80	/* alarm flag enable */
-
-/* Bits in the watchdog register (extended only) */
-#define	MK48TXX_WDOG_RB_1_16	0x00	/* watchdog resolution 1/16 second */
-#define	MK48TXX_WDOG_RB_1_4	0x01	/* watchdog resolution 1/4 second */
-#define	MK48TXX_WDOG_RB_1	0x02	/* watchdog resolution 1 second */
-#define	MK48TXX_WDOG_RB_4	0x03	/* watchdog resolution 4 seconds */
-#define	MK48TXX_WDOG_BMB_MASK	0x7c	/* mask for watchdog multiplier */
-#define	MK48TXX_WDOG_BMB_SHIFT	2	/* shift for watchdog multiplier */
-#define	MK48TXX_WDOG_WDS	0x80	/* watchdog steering bit */
-
-/* Bits in the control register */
-#define	MK48TXX_CSR_CALIB_MASK	0x1f	/* mask for calibration step width */
-#define	MK48TXX_CSR_SIGN	0x20	/* sign of above calibration witdh */
-#define	MK48TXX_CSR_READ	0x40	/* want to read (freeze clock) */
-#define	MK48TXX_CSR_WRITE	0x80	/* want to write */
-
-/* Bits in the seconds register */
-#define	MK48TXX_SEC_MASK	0x7f	/* mask for seconds */
-#define	MK48TXX_SEC_ST		0x80	/* stop oscillator */
-
-/* Bits in the minutes register */
-#define	MK48TXX_MIN_MASK	0x7f	/* mask for minutes */
-
-/* Bits in the hours register */
-#define	MK48TXX_HOUR_MASK	0x3f	/* mask for hours */
-
-/* Bits in the century/weekday register */
-#define	MK48TXX_WDAY_MASK	0x07	/* mask for weekday */
-#define	MK48TXX_WDAY_CB		0x10	/* century bit (extended only) */
-#define	MK48TXX_WDAY_CB_SHIFT	4	/* shift for century bit */
-#define	MK48TXX_WDAY_CEB	0x20	/* century enable bit (extended only) */
-#define	MK48TXX_WDAY_FT		0x40	/* frequency test */
-
-/* Bits in the day in month register */
-#define	MK48TXX_DAY_MASK	0x3f	/* mask for day in month */
-
-/* Bits in the month register */
-#define	MK48TXX_MON_MASK	0x1f	/* mask for month */
-
-/* Bits in the year register */
-#define	MK48TXX_YEAR_MASK	0xff	/* mask for year */
-
-/* Model specific NVRAM sizes and clock offsets */
-#define	MK48T02_CLKSZ		2048
-#define	MK48T02_CLKOFF		0x7f0
-
-#define	MK48T08_CLKSZ		8192
-#define	MK48T08_CLKOFF		0x1ff0
-
-#define	MK48T18_CLKSZ		8192
-#define	MK48T18_CLKOFF		0x1ff0
-
-#define	MK48T37_CLKSZ		32768
-#define	MK48T37_CLKOFF		0x1ff0
-
-#define	MK48T59_CLKSZ		8192
-#define	MK48T59_CLKOFF		0x1ff0
diff --git a/sys/dev/mk48txx/mk48txxvar.h b/sys/dev/mk48txx/mk48txxvar.h
deleted file mode 100644
index f51f4e715415..000000000000
--- a/sys/dev/mk48txx/mk48txxvar.h
+++ /dev/null
@@ -1,63 +0,0 @@
-/*-
- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
- *
- * Copyright (c) 2000 The NetBSD Foundation, Inc.
- * All rights reserved.
- *
- * This code is derived from software contributed to The NetBSD Foundation
- * by Paul Kranenburg.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
- * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- *	$NetBSD: mk48txxvar.h,v 1.6 2008/04/28 20:23:50 martin Exp $
- *
- * $FreeBSD$
- */
-
-typedef uint8_t (*mk48txx_nvrd_t)(device_t dev, int off);
-typedef void (*mk48txx_nvwr_t)(device_t dev, int off, uint8_t v);
-
-struct mk48txx_softc {
-	struct resource		*sc_res;/* bus resource */
-
-	struct mtx		sc_mtx;	/* hardware mutex */
-	eventhandler_tag	sc_wet;	/* watchdog event handler tag */
-
-	const char	*sc_model;	/* chip model name */
-	bus_size_t	sc_nvramsz;	/* Size of NVRAM on the chip */
-	bus_size_t	sc_clkoffset;	/* Offset in NVRAM to clock bits */
-	u_int		sc_year0;	/* year counter offset */
-	u_int		sc_flag;	/* MD flags */
-#define	MK48TXX_NO_CENT_ADJUST	0x0001	/* don't manually adjust century */
-#define	MK48TXX_WDOG_REGISTER	0x0002	/* register watchdog */
-#define	MK48TXX_WDOG_ENABLE_WDS	0x0004	/* enable watchdog steering bit */
-
-	mk48txx_nvrd_t	sc_nvrd;	/* NVRAM/RTC read function */
-	mk48txx_nvwr_t	sc_nvwr;	/* NVRAM/RTC write function */
-};
-
-/* Chip attach function */
-int mk48txx_attach(device_t dev);
-
-/* Methods for the clock interface */
-int mk48txx_gettime(device_t dev, struct timespec *ts);
-int mk48txx_settime(device_t dev, struct timespec *ts);
diff --git a/tools/kerneldoc/subsys/Doxyfile-dev_mk48txx b/tools/kerneldoc/subsys/Doxyfile-dev_mk48txx
deleted file mode 100644
index dc1e6a55ffa2..000000000000
--- a/tools/kerneldoc/subsys/Doxyfile-dev_mk48txx
+++ /dev/null
@@ -1,21 +0,0 @@
-# Doxyfile 1.5.2
-
-# $FreeBSD$
-
-#---------------------------------------------------------------------------
-# Project related configuration options
-#---------------------------------------------------------------------------
-PROJECT_NAME           = "FreeBSD kernel MK48TXX device code"
-OUTPUT_DIRECTORY       = $(DOXYGEN_DEST_PATH)/dev_mk48txx/
-EXTRACT_ALL            = YES    # for undocumented src, no warnings enabled
-#---------------------------------------------------------------------------
-# configuration options related to the input files
-#---------------------------------------------------------------------------
-INPUT                  = $(DOXYGEN_SRC_PATH)/dev/mk48txx/ \
-                         $(NOTREVIEWED)
-
-GENERATE_TAGFILE       = dev_mk48txx/dev_mk48txx.tag
-
-@INCLUDE_PATH          = $(DOXYGEN_INCLUDE_PATH)
-@INCLUDE               = common-Doxyfile
-