mc146818(4): remove obsolete driver

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

5 files changed, 0 insertions, 529 deletions

diff --git a/sys/conf/files b/sys/conf/files
index 2a71e21ace71..6f6fcac25bbe 100644
--- a/sys/conf/files
+++ b/sys/conf/files
@@ -2388,7 +2388,6 @@ lio_23xx_nic.bin.fw	optional lio					\
 dev/malo/if_malo.c		optional malo
 dev/malo/if_malohal.c		optional malo
 dev/malo/if_malo_pci.c		optional malo pci
-dev/mc146818/mc146818.c		optional mc146818
 dev/md/md.c			optional md
 dev/mdio/mdio_if.m		optional miiproxy | mdio
 dev/mdio/mdio.c			optional miiproxy | mdio
diff --git a/sys/dev/mc146818/mc146818.c b/sys/dev/mc146818/mc146818.c
deleted file mode 100644
index 518c8cde8a2e..000000000000
--- a/sys/dev/mc146818/mc146818.c
+++ /dev/null
@@ -1,290 +0,0 @@
-/*-
- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
- *
- * Copyright (c) 2003 Izumi Tsutsui.  All rights reserved.
- *
- * 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 AUTHOR ``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 AUTHOR 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: mc146818.c,v 1.16 2008/05/14 13:29:28 tsutsui Exp $
- */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-/*
- * mc146818 and compatible time of day chip subroutines
- */
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/bus.h>
-#include <sys/clock.h>
-#include <sys/lock.h>
-#include <sys/mutex.h>
-
-#include <machine/bus.h>
-
-#include <dev/mc146818/mc146818reg.h>
-#include <dev/mc146818/mc146818var.h>
-
-#include "clock_if.h"
-
-static u_int	mc146818_def_getcent(device_t);
-static void	mc146818_def_setcent(device_t, u_int);
-
-int
-mc146818_attach(device_t dev)
-{
-	struct mc146818_softc *sc;
-
-	sc = device_get_softc(dev);
-
-	if (mtx_initialized(&sc->sc_mtx) == 0) {
-		device_printf(dev, "%s: mutex not initialized\n", __func__);
-		return (ENXIO);
-	}
-
-	if (sc->sc_mcread == NULL)
-		sc->sc_mcread = mc146818_def_read;
-	if (sc->sc_mcwrite == NULL)
-		sc->sc_mcwrite = mc146818_def_write;
-
-	if (sc->sc_flag & MC146818_NO_CENT_ADJUST) {
-		/*
-		 * Note that setting MC146818_NO_CENT_ADJUST means that
-		 * the century has to be stored in NVRAM somewhere.
-		 */
-		if (sc->sc_getcent == NULL)
-			sc->sc_getcent = mc146818_def_getcent;
-		if (sc->sc_setcent == NULL)
-			sc->sc_setcent = mc146818_def_setcent;
-	}
-
-	mtx_lock_spin(&sc->sc_mtx);
-	if (((*sc->sc_mcread)(dev, MC_REGD) & MC_REGD_VRT) == 0) {
-		mtx_unlock_spin(&sc->sc_mtx);
-		device_printf(dev, "%s: battery low\n", __func__);
-		return (ENXIO);
-	}
-
-	sc->sc_rega = MC_BASE_32_KHz;
-	(*sc->sc_mcwrite)(dev, MC_REGA, sc->sc_rega);
-
-	sc->sc_regb = 0;
-	sc->sc_regb |= (sc->sc_flag & MC146818_BCD) ? 0 : MC_REGB_BINARY;
-	sc->sc_regb |= (sc->sc_flag & MC146818_12HR) ? 0 : MC_REGB_24HR;
-	(*sc->sc_mcwrite)(dev, MC_REGB, sc->sc_regb);
-	mtx_unlock_spin(&sc->sc_mtx);
-
-	clock_register(dev, 1000000);	/* 1 second resolution */
-
-	return (0);
-}
-
-/*
- * Get time of day and convert it to a struct timespec.
- * Return 0 on success, an error number otherwise.
- */
-int
-mc146818_gettime(device_t dev, struct timespec *ts)
-{
-	struct mc146818_softc *sc;
-	struct clocktime ct;
-	int timeout, cent, year;
-
-	sc = device_get_softc(dev);
-
-	timeout = 1000000;	/* XXX how long should we wait? */
-
-	/*
-	 * If MC_REGA_UIP is 0 we have at least 244us before the next
-	 * update.  If it's 1 an update is imminent.
-	 */
-	for (;;) {
-		mtx_lock_spin(&sc->sc_mtx);
-		if (((*sc->sc_mcread)(dev, MC_REGA) & MC_REGA_UIP) == 0)
-			break;
-		mtx_unlock_spin(&sc->sc_mtx);
-		if (--timeout < 0) {
-			device_printf(dev, "%s: timeout\n", __func__);
-			return (EBUSY);
-		}
-	}
-
-#define	FROMREG(x)	((sc->sc_flag & MC146818_BCD) ? FROMBCD(x) : (x))
-
-	ct.nsec = 0;
-	ct.sec = FROMREG((*sc->sc_mcread)(dev, MC_SEC));
-	ct.min = FROMREG((*sc->sc_mcread)(dev, MC_MIN));
-	ct.hour = FROMREG((*sc->sc_mcread)(dev, MC_HOUR));
-	/* Map dow from 1 - 7 to 0 - 6. */
-	ct.dow = FROMREG((*sc->sc_mcread)(dev, MC_DOW)) - 1;
-	ct.day = FROMREG((*sc->sc_mcread)(dev, MC_DOM));
-	ct.mon = FROMREG((*sc->sc_mcread)(dev, MC_MONTH));
-	year = FROMREG((*sc->sc_mcread)(dev, MC_YEAR));
-	year += sc->sc_year0;
-	if (sc->sc_flag & MC146818_NO_CENT_ADJUST) {
-		cent = (*sc->sc_getcent)(dev);
-		year += cent * 100;
-	} else if (year < POSIX_BASE_YEAR)
-		year += 100;
-	mtx_unlock_spin(&sc->sc_mtx);
-
-	ct.year = year;
-
-	return (clock_ct_to_ts(&ct, ts));
-}
-
-#ifdef notyet
-int
-mc146818_getsecs(device_t dev, int *secp)
-{
-	struct mc146818_softc *sc;
-	int sec, timeout;
-
-	sc = device_get_softc(dev);
-
-	timeout = 1000000;	/* XXX how long should we wait? */
-
-	for (;;) {
-		mtx_lock_spin(&sc->sc_mtx);
-		if (((*sc->sc_mcread)(dev, MC_REGA) & MC_REGA_UIP) == 0) {
-			sec = FROMREG((*sc->sc_mcread)(dev, MC_SEC));
-			mtx_unlock_spin(&sc->sc_mtx);
-			break;
-		}
-		mtx_unlock_spin(&sc->sc_mtx);
-		if (--timeout == 0) {
-			device_printf(dev, "%s: timeout\n", __func__);
-			return (EBUSY);
-		}
-	}
-
-#undef FROMREG
-
-	*secp = sec;
-	return (0);
-}
-#endif
-
-/*
- * Set the time of day clock based on the value of the struct timespec arg.
- * Return 0 on success, an error number otherwise.
- */
-int
-mc146818_settime(device_t dev, struct timespec *ts)
-{
-	struct mc146818_softc *sc;
-	struct clocktime ct;
-	int cent, year;
-
-	sc = device_get_softc(dev);
-
-	/* 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_spin(&sc->sc_mtx);
-	/* Disable RTC updates and interrupts (if enabled). */
-	(*sc->sc_mcwrite)(dev, MC_REGB,
-	    ((sc->sc_regb & (MC_REGB_BINARY | MC_REGB_24HR)) | MC_REGB_SET));
-
-#define	TOREG(x)	((sc->sc_flag & MC146818_BCD) ? TOBCD(x) : (x))
-
-	(*sc->sc_mcwrite)(dev, MC_SEC, TOREG(ct.sec));
-	(*sc->sc_mcwrite)(dev, MC_MIN, TOREG(ct.min));
-	(*sc->sc_mcwrite)(dev, MC_HOUR, TOREG(ct.hour));
-	/* Map dow from 0 - 6 to 1 - 7. */
-	(*sc->sc_mcwrite)(dev, MC_DOW, TOREG(ct.dow + 1));
-	(*sc->sc_mcwrite)(dev, MC_DOM, TOREG(ct.day));
-	(*sc->sc_mcwrite)(dev, MC_MONTH, TOREG(ct.mon));
-
-	year = ct.year - sc->sc_year0;
-	if (sc->sc_flag & MC146818_NO_CENT_ADJUST) {
-		cent = year / 100;
-		(*sc->sc_setcent)(dev, cent);
-		year -= cent * 100;
-	} else if (year > 99)
-		year -= 100;
-	(*sc->sc_mcwrite)(dev, MC_YEAR, TOREG(year));
-
-	/* Reenable RTC updates and interrupts. */
-	(*sc->sc_mcwrite)(dev, MC_REGB, sc->sc_regb);
-	mtx_unlock_spin(&sc->sc_mtx);
-
-#undef TOREG
-
-	return (0);
-}
-
-#define	MC_ADDR	0
-#define	MC_DATA	1
-
-u_int
-mc146818_def_read(device_t dev, u_int reg)
-{
-	struct mc146818_softc *sc;
-
-	sc = device_get_softc(dev);
-	bus_space_write_1(sc->sc_bst, sc->sc_bsh, MC_ADDR, reg);
-	return (bus_space_read_1(sc->sc_bst, sc->sc_bsh, MC_DATA));
-}
-
-void
-mc146818_def_write(device_t dev, u_int reg, u_int val)
-{
-	struct mc146818_softc *sc;
-
-	sc = device_get_softc(dev);
-	bus_space_write_1(sc->sc_bst, sc->sc_bsh, MC_ADDR, reg);
-	bus_space_write_1(sc->sc_bst, sc->sc_bsh, MC_DATA, val);
-}
-
-#undef MC_ADDR
-#undef MC_DATA
-
-/*
- * Looks like it's common even across platforms to store the century at
- * 0x32 in the NVRAM of the mc146818.
- */
-#define	MC_CENT	0x32
-
-static u_int
-mc146818_def_getcent(device_t dev)
-{
-	struct mc146818_softc *sc;
-
-	sc = device_get_softc(dev);
-	return ((*sc->sc_mcread)(dev, MC_CENT));
-}
-
-static void
-mc146818_def_setcent(device_t dev, u_int cent)
-{
-	struct mc146818_softc *sc;
-
-	sc = device_get_softc(dev);
-	(*sc->sc_mcwrite)(dev, MC_CENT, cent);
-}
-
-#undef MC_CENT
diff --git a/sys/dev/mc146818/mc146818reg.h b/sys/dev/mc146818/mc146818reg.h
deleted file mode 100644
index 10071699882a..000000000000
--- a/sys/dev/mc146818/mc146818reg.h
+++ /dev/null
@@ -1,150 +0,0 @@
-/*-
- * SPDX-License-Identifier: MIT-CMU
- *
- * Copyright (c) 1995 Carnegie-Mellon University.
- * All rights reserved.
- *
- * Permission to use, copy, modify and distribute this software and
- * its documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
- * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
- * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * Carnegie Mellon requests users of this software to return to
- *
- *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
- *  School of Computer Science
- *  Carnegie Mellon University
- *  Pittsburgh PA 15213-3890
- *
- * any improvements or extensions that they make and grant Carnegie the
- * rights to redistribute these changes.
- *
- *	$NetBSD: mc146818reg.h,v 1.9 2006/03/08 23:46:25 lukem Exp $
- *
- * $FreeBSD$
- */
-
-/*
- * Definitions for the Motorola MC146818A Real Time Clock.
- * They also apply for the (compatible) Dallas Semiconductor DS1287A RTC.
- *
- * Though there are undoubtedly other (better) sources, this material was
- * culled from the DEC "KN121 System Module Programmer's Reference
- * Information."
- *
- * The MC146818A has 16 registers.  The first 10 contain time-of-year
- * and alarm data.  The rest contain various control and status bits.
- *
- * To read or write the registers, one writes the register number to
- * the RTC's control port, then either reads from or writes the new
- * data to the RTC's data port.  Since the locations of these ports
- * and the method used to access them can be machine-dependent, the
- * low-level details of reading and writing the RTC's registers are
- * handled by machine-specific functions.
- *
- * The time-of-year and alarm data can be expressed in either binary
- * or BCD, and they are selected by a bit in register B.
- *
- * The "hour" time-of-year and alarm fields can either be expressed in
- * AM/PM format, or in 24-hour format.  If AM/PM format is chosen, the
- * hour fields can have the values: 1-12 and 81-92 (the latter being
- * PM).  If the 24-hour format is chosen, they can have the values
- * 0-24.  The hour format is selectable by a bit in register B.
- * (XXX IS AM/PM MODE DESCRIPTION CORRECT?)
- *
- * It is assumed the if systems are going to use BCD (rather than
- * binary) mode, or AM/PM hour format, they'll do the appropriate
- * conversions in machine-dependent code.  Also, if the clock is
- * switched between BCD and binary mode, or between AM/PM mode and
- * 24-hour mode, the time-of-day and alarm registers are NOT
- * automatically reset; they must be reprogrammed with correct values.
- */
-
-/*
- * The registers, and the bits within each register.
- */
-
-#define	MC_SEC		0x0	/* Time of year: seconds (0-59) */
-#define	MC_ASEC		0x1	/* Alarm: seconds */
-#define	MC_MIN		0x2	/* Time of year: minutes (0-59) */
-#define	MC_AMIN		0x3	/* Alarm: minutes */
-#define	MC_HOUR		0x4	/* Time of year: hour (see above) */
-#define	MC_AHOUR	0x5	/* Alarm: hour */
-#define	MC_DOW		0x6	/* Time of year: day of week (1-7) */
-#define	MC_DOM		0x7	/* Time of year: day of month (1-31) */
-#define	MC_MONTH	0x8	/* Time of year: month (1-12) */
-#define	MC_YEAR		0x9	/* Time of year: year in century (0-99) */
-
-#define	MC_REGA		0xa	/* Control register A */
-
-#define	 MC_REGA_RSMASK	0x0f	/* Interrupt rate select mask (see below) */
-#define	 MC_REGA_DVMASK	0x70	/* Divisor select mask (see below) */
-#define	 MC_REGA_DV0	0x10	/* Divisor 0 */
-#define	 MC_REGA_DV1	0x20	/* Divisor 1 */
-#define	 MC_REGA_DV2	0x40	/* Divisor 2 */
-#define	 MC_REGA_UIP	0x80	/* Update in progress; read only. */
-
-#define	MC_REGB		0xb	/* Control register B */
-
-#define	 MC_REGB_DSE	0x01	/* Daylight Savings Enable */
-#define	 MC_REGB_24HR	0x02	/* 24-hour mode (AM/PM mode when clear) */
-#define	 MC_REGB_BINARY	0x04	/* Binary mode (BCD mode when clear) */
-#define	 MC_REGB_SQWE	0x08	/* Square Wave Enable */
-#define	 MC_REGB_UIE	0x10	/* Update End interrupt enable */
-#define	 MC_REGB_AIE	0x20	/* Alarm interrupt enable */
-#define	 MC_REGB_PIE	0x40	/* Periodic interrupt enable */
-#define	 MC_REGB_SET	0x80	/* Allow time to be set; stops updates */
-
-#define	MC_REGC		0xc	/* Control register C */
-
-/*	 MC_REGC_UNUSED	0x0f	UNUSED */
-#define	 MC_REGC_UF	0x10	/* Update End interrupt flag */
-#define	 MC_REGC_AF	0x20	/* Alarm interrupt flag */
-#define	 MC_REGC_PF	0x40	/* Periodic interrupt flag */
-#define	 MC_REGC_IRQF	0x80	/* Interrupt request pending flag */
-
-#define	MC_REGD		0xd	/* Control register D */
-
-/*	 MC_REGD_UNUSED	0x7f	UNUSED */
-#define	 MC_REGD_VRT	0x80	/* Valid RAM and Time bit */
-
-
-#define	MC_NREGS	0xe	/* 14 registers; CMOS follows */
-#define	MC_NTODREGS	0xa	/* 10 of those regs are for TOD and alarm */
-
-#define	MC_NVRAM_START	0xe	/* start of NVRAM: offset 14 */
-#define	MC_NVRAM_SIZE	50	/* 50 bytes of NVRAM */
-
-/*
- * Periodic Interrupt Rate Select constants (Control register A)
- */
-#define	MC_RATE_NONE	0x0	/* No periodic interrupt */
-#define	MC_RATE_1	0x1	/* 256 Hz if MC_BASE_32_KHz, else 32768 Hz */
-#define	MC_RATE_2	0x2	/* 128 Hz if MC_BASE_32_KHz, else 16384 Hz */
-#define	MC_RATE_8192_Hz	0x3	/* 122.070 us period */
-#define	MC_RATE_4096_Hz	0x4	/* 244.141 us period */
-#define	MC_RATE_2048_Hz	0x5	/* 488.281 us period */
-#define	MC_RATE_1024_Hz	0x6	/* 976.562 us period */
-#define	MC_RATE_512_Hz	0x7	/* 1.953125 ms period */
-#define	MC_RATE_256_Hz	0x8	/* 3.90625 ms period */
-#define	MC_RATE_128_Hz	0x9	/* 7.8125 ms period */
-#define	MC_RATE_64_Hz	0xa	/* 15.625 ms period */
-#define	MC_RATE_32_Hz	0xb	/* 31.25 ms period */
-#define	MC_RATE_16_Hz	0xc	/* 62.5 ms period */
-#define	MC_RATE_8_Hz	0xd	/* 125 ms period */
-#define	MC_RATE_4_Hz	0xe	/* 250 ms period */
-#define	MC_RATE_2_Hz	0xf	/* 500 ms period */
-
-/*
- * Time base (divisor select) constants (Control register A)
- */
-#define	MC_BASE_4_MHz	0x00		/* 4 MHz crystal */
-#define	MC_BASE_1_MHz	MC_REGA_DV0	/* 1 MHz crystal */
-#define	MC_BASE_32_KHz	MC_REGA_DV1	/* 32 KHz crystal */
-#define	MC_BASE_NONE	(MC_REGA_DV2 | MC_REGA_DV1) /* actually also resets */
-#define	MC_BASE_RESET	(MC_REGA_DV2 | MC_REGA_DV1 | MC_REGA_DV0)
diff --git a/sys/dev/mc146818/mc146818var.h b/sys/dev/mc146818/mc146818var.h
deleted file mode 100644
index 7cca69991b20..000000000000
--- a/sys/dev/mc146818/mc146818var.h
+++ /dev/null
@@ -1,67 +0,0 @@
-/*-
- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
- *
- * Copyright (c) 2003 Izumi Tsutsui.  All rights reserved.
- *
- * 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 AUTHOR ``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 AUTHOR 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: mc146818var.h,v 1.7 2008/05/14 13:29:29 tsutsui Exp $
- *
- * $FreeBSD$
- */
-
-struct mc146818_softc {
-	bus_space_tag_t	sc_bst;			/* bus space tag */
-	bus_space_handle_t sc_bsh;		/* bus space handle */
-
-	struct mtx sc_mtx;			/* hardware mutex */
-
-	u_char sc_rega;				/* register A */
-	u_char sc_regb;				/* register B */
-
-	u_int sc_year0;				/* year counter offset */
-
-	u_int sc_flag;				/* MD flags */
-#define	MC146818_NO_CENT_ADJUST	0x0001		/* don't adjust century */
-#define	MC146818_BCD		0x0002		/* use BCD mode */
-#define	MC146818_12HR		0x0004		/* use AM/PM mode */
-
-	/* MD chip register read/write functions */
-	u_int (*sc_mcread)(device_t dev, u_int reg);
-	void (*sc_mcwrite)(device_t dev, u_int reg, u_int val);
-	/* MD century get/set functions */
-	u_int (*sc_getcent)(device_t dev);
-	void (*sc_setcent)(device_t dev, u_int cent);
-};
-
-/* Default read/write functions */
-u_int mc146818_def_read(device_t dev, u_int reg);
-void mc146818_def_write(device_t dev, u_int reg, u_int val);
-
-/* Chip attach function */
-int mc146818_attach(device_t);
-
-/* Methods for the clock interface */
-#ifdef notyet
-int mc146818_getsecs(device_t dev, int *secp);
-#endif
-int mc146818_gettime(device_t dev, struct timespec *ts);
-int mc146818_settime(device_t dev, struct timespec *ts);
diff --git a/tools/kerneldoc/subsys/Doxyfile-dev_mc146818 b/tools/kerneldoc/subsys/Doxyfile-dev_mc146818
deleted file mode 100644
index 6240906fc19e..000000000000
--- a/tools/kerneldoc/subsys/Doxyfile-dev_mc146818
+++ /dev/null
@@ -1,21 +0,0 @@
-# Doxyfile 1.5.2
-
-# $FreeBSD$
-
-#---------------------------------------------------------------------------
-# Project related configuration options
-#---------------------------------------------------------------------------
-PROJECT_NAME           = "FreeBSD kernel MC146818 device code"
-OUTPUT_DIRECTORY       = $(DOXYGEN_DEST_PATH)/dev_mc146818/
-EXTRACT_ALL            = YES    # for undocumented src, no warnings enabled
-#---------------------------------------------------------------------------
-# configuration options related to the input files
-#---------------------------------------------------------------------------
-INPUT                  = $(DOXYGEN_SRC_PATH)/dev/mc146818/ \
-                         $(NOTREVIEWED)
-
-GENERATE_TAGFILE       = dev_mc146818/dev_mc146818.tag
-
-@INCLUDE_PATH          = $(DOXYGEN_INCLUDE_PATH)
-@INCLUDE               = common-Doxyfile
-