Move driver for DS1374 RTC to sys/dev/iicbus

The earlier version of the driver is sys/mips/rmi/dev/iic/ds1374u.c
Convert all references to ds1374u to ds1374, and use DEVMETHOD_END.
Also update the license header as Netlogic is now Broadcom.

1 files changed, 143 insertions, 0 deletions

diff --git a/sys/dev/iicbus/ds1374.c b/sys/dev/iicbus/ds1374.c
new file mode 100644
index 0000000..2ee0c57
--- /dev/null
+++ b/sys/dev/iicbus/ds1374.c
@@ -0,0 +1,143 @@
+/*-
+ * Copyright (c) 2003-2012 Broadcom Corporation
+ * 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 BROADCOM ``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 BROADCOM 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("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/bus.h>
+#include <sys/clock.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <sys/rman.h>
+
+#include <mips/include/bus.h>
+#include <mips/include/cpu.h>
+#include <mips/include/cpufunc.h>
+#include <mips/include/frame.h>
+#include <mips/include/resource.h>
+
+#include <dev/iicbus/iiconf.h>
+#include <dev/iicbus/iicbus.h>
+
+#include "iicbus_if.h"
+#include "clock_if.h"
+
+#define	DS1374_RTC_COUNTER	0	/* counter (bytes 0-3) */
+
+struct ds1374_softc {
+	uint32_t	sc_addr;
+	device_t	sc_dev;
+};
+
+static int
+ds1374_probe(device_t dev)
+{
+	device_set_desc(dev, "DS1374 RTC");
+	return (0);
+}
+
+static int
+ds1374_attach(device_t dev)
+{
+	struct ds1374_softc *sc = device_get_softc(dev);
+
+	if(sc==NULL) {
+		printf("ds1374_attach device_get_softc failed\n");
+		return (0);
+	}
+	sc->sc_dev = dev;
+	sc->sc_addr = iicbus_get_addr(dev);
+
+	clock_register(dev, 1000);
+	return (0);
+}
+
+static int 
+ds1374_settime(device_t dev, struct timespec *ts)
+{
+	/* NB: register pointer precedes actual data */
+	uint8_t data[5] = { DS1374_RTC_COUNTER };
+	struct ds1374_softc *sc = device_get_softc(dev);
+	struct iic_msg msgs[1] = {
+	     { sc->sc_addr, IIC_M_WR, 5, data },
+	};
+
+	data[1] = (ts->tv_sec >> 0) & 0xff;
+	data[2] = (ts->tv_sec >> 8) & 0xff;
+	data[3] = (ts->tv_sec >> 16) & 0xff;
+	data[4] = (ts->tv_sec >> 24) & 0xff;
+
+	return iicbus_transfer(dev, msgs, 1);
+}
+
+static int
+ds1374_gettime(device_t dev, struct timespec *ts)
+{
+	struct ds1374_softc *sc = device_get_softc(dev);
+	uint8_t addr[1] = { DS1374_RTC_COUNTER };
+	uint8_t secs[4];
+	struct iic_msg msgs[2] = {
+	     { sc->sc_addr, IIC_M_WR, 1, addr },
+	     { sc->sc_addr, IIC_M_RD, 4, secs },
+	};
+	int error;
+
+	error = iicbus_transfer(dev, msgs, 2);
+	if (error == 0) {
+		/* counter has seconds since epoch */
+		ts->tv_sec = (secs[3] << 24) | (secs[2] << 16)
+			   | (secs[1] <<  8) | (secs[0] <<  0);
+		ts->tv_nsec = 0;
+	}
+	return error;
+}
+
+static device_method_t ds1374_methods[] = {
+	DEVMETHOD(device_probe,		ds1374_probe),
+	DEVMETHOD(device_attach,	ds1374_attach),
+
+	DEVMETHOD(clock_gettime,	ds1374_gettime),
+	DEVMETHOD(clock_settime,	ds1374_settime),
+
+	DEVMETHOD_END
+};
+
+static driver_t ds1374_driver = {
+	"ds1374_rtc",
+	ds1374_methods,
+	sizeof(struct ds1374_softc),
+};
+static devclass_t ds1374_devclass;
+
+DRIVER_MODULE(ds1374, iicbus, ds1374_driver, ds1374_devclass, 0, 0);
+MODULE_VERSION(ds1374, 1);
+MODULE_DEPEND(ds1374, iicbus, 1, 1, 1);