svn commit: r236078 - in stable/9/sys: conf dev/iicbus
Marius Strobl
marius at FreeBSD.org
Sat May 26 08:58:28 UTC 2012
Author: marius
Date: Sat May 26 08:58:27 2012
New Revision: 236078
URL: http://svn.freebsd.org/changeset/base/236078
Log:
MFC: r234248
Add a driver for the NXP (Philips) PCF8563 RTC.
Obtained from: NetBSD (pcf8563reg.h)
Added:
stable/9/sys/dev/iicbus/pcf8563.c
- copied unchanged from r234248, head/sys/dev/iicbus/pcf8563.c
stable/9/sys/dev/iicbus/pcf8563reg.h
- copied unchanged from r234248, head/sys/dev/iicbus/pcf8563reg.h
Modified:
stable/9/sys/conf/files
Directory Properties:
stable/9/sys/ (props changed)
stable/9/sys/amd64/include/xen/ (props changed)
stable/9/sys/boot/ (props changed)
stable/9/sys/boot/i386/efi/ (props changed)
stable/9/sys/boot/ia64/efi/ (props changed)
stable/9/sys/boot/ia64/ski/ (props changed)
stable/9/sys/boot/powerpc/boot1.chrp/ (props changed)
stable/9/sys/boot/powerpc/ofw/ (props changed)
stable/9/sys/cddl/contrib/opensolaris/ (props changed)
stable/9/sys/conf/ (props changed)
stable/9/sys/contrib/dev/acpica/ (props changed)
stable/9/sys/contrib/octeon-sdk/ (props changed)
stable/9/sys/contrib/pf/ (props changed)
stable/9/sys/contrib/x86emu/ (props changed)
stable/9/sys/dev/ (props changed)
stable/9/sys/dev/e1000/ (props changed)
stable/9/sys/dev/ixgbe/ (props changed)
stable/9/sys/fs/ (props changed)
stable/9/sys/fs/ntfs/ (props changed)
stable/9/sys/modules/ (props changed)
Modified: stable/9/sys/conf/files
==============================================================================
--- stable/9/sys/conf/files Sat May 26 08:54:44 2012 (r236077)
+++ stable/9/sys/conf/files Sat May 26 08:58:27 2012 (r236078)
@@ -1146,6 +1146,7 @@ dev/iicbus/iicbus_if.m optional iicbus
dev/iicbus/iiconf.c optional iicbus
dev/iicbus/iicsmb.c optional iicsmb \
dependency "iicbus_if.h"
+dev/iicbus/pcf8563.c optional pcf8563
dev/iir/iir.c optional iir
dev/iir/iir_ctrl.c optional iir
dev/iir/iir_pci.c optional iir pci
Copied: stable/9/sys/dev/iicbus/pcf8563.c (from r234248, head/sys/dev/iicbus/pcf8563.c)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ stable/9/sys/dev/iicbus/pcf8563.c Sat May 26 08:58:27 2012 (r236078, copy of r234248, head/sys/dev/iicbus/pcf8563.c)
@@ -0,0 +1,202 @@
+/*-
+ * Copyright (c) 2012 Marius Strobl <marius at FreeBSD.org>
+ * 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 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 AUTHOR 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.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+/*
+ * Driver for NXP PCF8563 real-time clock/calendar
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/clock.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+
+#include <dev/iicbus/iicbus.h>
+#include <dev/iicbus/iiconf.h>
+#include <dev/iicbus/pcf8563reg.h>
+
+#include "clock_if.h"
+#include "iicbus_if.h"
+
+#define PCF8563_NCLOCKREGS (PCF8563_R_YEAR - PCF8563_R_CS1 + 1)
+
+struct pcf8563_softc {
+ uint32_t sc_flags;
+#define PCF8563_CPOL (1 << 0) /* PCF8563_R_MONTH_C means 19xx */
+ uint16_t sc_addr; /* PCF8563 slave address */
+ uint16_t sc_year0; /* TOD clock year 0 */
+};
+
+static device_attach_t pcf8563_attach;
+static device_probe_t pcf8563_probe;
+static clock_gettime_t pcf8563_gettime;
+static clock_settime_t pcf8563_settime;
+
+static int
+pcf8563_probe(device_t dev)
+{
+
+ device_set_desc(dev, "NXP PCF8563 RTC");
+ return (BUS_PROBE_NOWILDCARD);
+}
+
+static int
+pcf8563_attach(device_t dev)
+{
+ uint8_t reg = PCF8563_R_SECOND, val;
+ struct iic_msg msgs[] = {
+ { 0, IIC_M_WR, sizeof(reg), ® },
+ { 0, IIC_M_RD, sizeof(val), &val }
+ };
+ struct pcf8563_softc *sc;
+ int error;
+
+ sc = device_get_softc(dev);
+ sc->sc_addr = iicbus_get_addr(dev);
+ if (sc->sc_addr == 0)
+ sc->sc_addr = PCF8563_ADDR;
+
+ msgs[0].slave = msgs[1].slave = sc->sc_addr;
+ error = iicbus_transfer(device_get_parent(dev), msgs, sizeof(msgs) /
+ sizeof(*msgs));
+ if (error != 0) {
+ device_printf(dev, "%s: cannot read RTC\n", __func__);
+ return (error);
+ }
+ if ((val & PCF8563_R_SECOND_VL) != 0) {
+ device_printf(dev, "%s: battery low\n", __func__);
+ return (ENXIO);
+ }
+
+ sc->sc_year0 = 1900;
+ clock_register(dev, 1000000); /* 1 second resolution */
+ return (0);
+}
+
+static int
+pcf8563_gettime(device_t dev, struct timespec *ts)
+{
+ struct clocktime ct;
+ uint8_t reg = PCF8563_R_SECOND, val[PCF8563_NCLOCKREGS];
+ struct iic_msg msgs[] = {
+ { 0, IIC_M_WR, sizeof(reg), ® },
+ { 0, IIC_M_RD, PCF8563_NCLOCKREGS, &val[PCF8563_R_SECOND] }
+ };
+ struct pcf8563_softc *sc;
+ int error;
+
+ sc = device_get_softc(dev);
+ msgs[0].slave = msgs[1].slave = sc->sc_addr;
+ error = iicbus_transfer(device_get_parent(dev), msgs, sizeof(msgs) /
+ sizeof(*msgs));
+ if (error != 0) {
+ device_printf(dev, "%s: cannot read RTC\n", __func__);
+ return (error);
+ }
+
+ ct.nsec = 0;
+ ct.sec = FROMBCD(val[PCF8563_R_SECOND] & PCF8563_M_SECOND);
+ ct.min = FROMBCD(val[PCF8563_R_MINUTE] & PCF8563_M_MINUTE);
+ ct.hour = FROMBCD(val[PCF8563_R_HOUR] & PCF8563_M_HOUR);
+ ct.day = FROMBCD(val[PCF8563_R_DAY] & PCF8563_M_DAY);
+ ct.dow = val[PCF8563_R_WEEKDAY] & PCF8563_M_WEEKDAY;
+ ct.mon = FROMBCD(val[PCF8563_R_MONTH] & PCF8563_M_MONTH);
+ ct.year = FROMBCD(val[PCF8563_R_YEAR] & PCF8563_M_YEAR);
+ ct.year += sc->sc_year0;
+ if (ct.year < POSIX_BASE_YEAR)
+ ct.year += 100; /* assume [1970, 2069] */
+ if ((val[PCF8563_R_MONTH] & PCF8563_R_MONTH_C) != 0) {
+ if (ct.year >= 100 + sc->sc_year0)
+ sc->sc_flags |= PCF8563_CPOL;
+ } else if (ct.year < 100 + sc->sc_year0)
+ sc->sc_flags |= PCF8563_CPOL;
+ return (clock_ct_to_ts(&ct, ts));
+}
+
+static int
+pcf8563_settime(device_t dev, struct timespec *ts)
+{
+ struct clocktime ct;
+ uint8_t val[PCF8563_NCLOCKREGS];
+ struct iic_msg msgs[] = {
+ { 0, IIC_M_WR, PCF8563_NCLOCKREGS - 1, &val[PCF8563_R_CS2] }
+ };
+ struct pcf8563_softc *sc;
+ int error;
+
+ sc = device_get_softc(dev);
+ val[PCF8563_R_CS2] = PCF8563_R_SECOND; /* abuse */
+ /* Accuracy is only one second. */
+ if (ts->tv_nsec >= 500000000)
+ ts->tv_sec++;
+ ts->tv_nsec = 0;
+ clock_ts_to_ct(ts, &ct);
+ val[PCF8563_R_SECOND] = TOBCD(ct.sec);
+ val[PCF8563_R_MINUTE] = TOBCD(ct.min);
+ val[PCF8563_R_HOUR] = TOBCD(ct.hour);
+ val[PCF8563_R_DAY] = TOBCD(ct.day);
+ val[PCF8563_R_WEEKDAY] = ct.dow;
+ val[PCF8563_R_MONTH] = TOBCD(ct.mon);
+ val[PCF8563_R_YEAR] = TOBCD(ct.year % 100);
+ if ((sc->sc_flags & PCF8563_CPOL) != 0) {
+ if (ct.year >= 100 + sc->sc_year0)
+ val[PCF8563_R_MONTH] |= PCF8563_R_MONTH_C;
+ } else if (ct.year < 100 + sc->sc_year0)
+ val[PCF8563_R_MONTH] |= PCF8563_R_MONTH_C;
+
+ msgs[0].slave = sc->sc_addr;
+ error = iicbus_transfer(device_get_parent(dev), msgs, sizeof(msgs) /
+ sizeof(*msgs));
+ if (error != 0)
+ device_printf(dev, "%s: cannot write RTC\n", __func__);
+ return (error);
+}
+
+static device_method_t pcf8563_methods[] = {
+ DEVMETHOD(device_probe, pcf8563_probe),
+ DEVMETHOD(device_attach, pcf8563_attach),
+
+ DEVMETHOD(clock_gettime, pcf8563_gettime),
+ DEVMETHOD(clock_settime, pcf8563_settime),
+
+ DEVMETHOD_END
+};
+
+static driver_t pcf8563_driver = {
+ "pcf8563_rtc",
+ pcf8563_methods,
+ sizeof(struct pcf8563_softc),
+};
+
+static devclass_t pcf8563_devclass;
+
+DRIVER_MODULE(pcf8563, iicbus, pcf8563_driver, pcf8563_devclass, NULL, NULL);
+MODULE_VERSION(pcf8563, 1);
+MODULE_DEPEND(pcf8563, iicbus, 1, 1, 1);
Copied: stable/9/sys/dev/iicbus/pcf8563reg.h (from r234248, head/sys/dev/iicbus/pcf8563reg.h)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ stable/9/sys/dev/iicbus/pcf8563reg.h Sat May 26 08:58:27 2012 (r236078, copy of r234248, head/sys/dev/iicbus/pcf8563reg.h)
@@ -0,0 +1,58 @@
+/* $NetBSD: pcf8563reg.h,v 1.1 2011/01/21 19:11:47 jakllsch Exp $ */
+
+/*-
+ * Jonathan Kollasch, 2011
+ *
+ * This file is in the public domain.
+ *
+ * $FreeBSD$
+ */
+
+/*
+ * NXP (Philips) PCF8563 RTC registers
+ */
+
+/* We only have clock mode registers here. */
+
+#ifndef _PCF8563REG_H_
+#define _PCF8563REG_H_
+
+/*
+ * PCF8563 RTC I2C address:
+ *
+ * 101 0001
+ */
+#define PCF8563_ADDR 0xa2
+
+#define PCF8563_R_CS1 0x00
+#define PCF8563_R_CS2 0x01
+#define PCF8563_R_SECOND 0x02
+#define PCF8563_R_MINUTE 0x03
+#define PCF8563_R_HOUR 0x04
+#define PCF8563_R_DAY 0x05
+#define PCF8563_R_WEEKDAY 0x06
+#define PCF8563_R_MONTH 0x07
+#define PCF8563_R_YEAR 0x08
+#define PCF8563_R_MINUTE_ALARM 0x09
+#define PCF8563_R_HOUR_ALARM 0x0a
+#define PCF8563_R_DAY_ALARM 0x0b
+#define PCF8563_R_WEEKDAY_ALARM 0x0c
+#define PCF8563_R_CLKOUT_CNTRL 0x0d
+#define PCF8563_R_TIMER_CNTRL 0x0e
+#define PCF8563_R_TIMER 0x0f
+
+#define PCF8563_R_SECOND_VL 0x80
+#define PCF8563_R_MONTH_C 0x80
+
+#define PCF8563_NREGS 0x10
+
+#define PCF8563_M_SECOND 0x7f
+#define PCF8563_M_MINUTE 0x7f
+#define PCF8563_M_HOUR 0x3f
+#define PCF8563_M_DAY 0x3f
+#define PCF8563_M_WEEKDAY 0x07
+#define PCF8563_M_MONTH 0x1f
+#define PCF8563_M_CENTURY 0x80
+#define PCF8563_M_YEAR 0xff
+
+#endif /* _PCF8563REG_H_ */
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