Module Name: src
Committed By: rkujawa
Date: Wed Nov 14 01:52:48 UTC 2012
Added Files:
src/sys/dev/ic: msm6242b.c msm6242breg.h msm6242bvar.h
Log Message:
Add MI OKI MSM6242B RTC driver.
To generate a diff of this commit:
cvs rdiff -u -r0 -r1.1 src/sys/dev/ic/msm6242b.c src/sys/dev/ic/msm6242breg.h \
src/sys/dev/ic/msm6242bvar.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Added files:
Index: src/sys/dev/ic/msm6242b.c
diff -u /dev/null src/sys/dev/ic/msm6242b.c:1.1
--- /dev/null Wed Nov 14 01:52:48 2012
+++ src/sys/dev/ic/msm6242b.c Wed Nov 14 01:52:48 2012
@@ -0,0 +1,245 @@
+/* $NetBSD: msm6242b.c,v 1.1 2012/11/14 01:52:48 rkujawa Exp $ */
+
+/*-
+ * Copyright (c) 2012 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Radoslaw Kujawa.
+ *
+ * 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.
+ */
+
+#include <sys/cdefs.h>
+
+#include <sys/param.h>
+#include <sys/device.h>
+#include <sys/bus.h>
+
+#include <dev/clock_subr.h>
+
+#include <dev/ic/msm6242bvar.h>
+#include <dev/ic/msm6242breg.h>
+
+/* #define MSM6242B_DEBUG 1 */
+
+static int msm6242b_gettime_ymdhms(todr_chip_handle_t, struct clock_ymdhms *);
+int msm6242b_settime_ymdhms(todr_chip_handle_t, struct clock_ymdhms *);
+
+bool msm6242b_hold(struct msm6242b_softc *sc);
+void msm6242b_free(struct msm6242b_softc *sc);
+static uint8_t msm6242b_read(struct msm6242b_softc *, uint8_t);
+static void msm6242b_write(struct msm6242b_softc *, uint8_t, uint8_t);
+static void msm6242b_set(struct msm6242b_softc *, uint8_t, uint8_t);
+static void msm6242b_unset(struct msm6242b_softc *, uint8_t, uint8_t);
+
+void
+msm6242b_attach(struct msm6242b_softc *sc)
+{
+ struct clock_ymdhms dt;
+
+ todr_chip_handle_t handle;
+ aprint_normal(": OKI MSM6242B\n");
+
+ handle = &sc->sc_handle;
+ handle->cookie = sc;
+ handle->todr_gettime = NULL;
+ handle->todr_settime = NULL;
+ handle->todr_gettime_ymdhms = msm6242b_gettime_ymdhms;
+ handle->todr_settime_ymdhms = msm6242b_settime_ymdhms;
+ handle->todr_setwen = NULL;
+
+ if (msm6242b_gettime_ymdhms(handle, &dt) != 0) {
+ aprint_error_dev(sc->sc_dev, "RTC does not work correctly\n");
+ return;
+ }
+
+#ifdef MSM6242B_DEBUG
+ aprint_normal_dev(sc->sc_dev, "the time is %d %d %d %d %d %d\n",
+ dt.dt_year, dt.dt_mon, dt.dt_day, dt.dt_hour, dt.dt_min, dt.dt_sec);
+#endif
+/* MSM6242B_DEBUG */
+ todr_attach(handle);
+}
+
+static int
+msm6242b_gettime_ymdhms(todr_chip_handle_t handle, struct clock_ymdhms *dt)
+{
+ struct msm6242b_softc *sc;
+
+ sc = handle->cookie;
+ /* XXX: splsched(); */
+
+ if(!msm6242b_hold(sc))
+ return (ENXIO);
+
+ dt->dt_sec = msm6242b_read(sc, MSM6242B_10SECOND) * 10 +
+ msm6242b_read(sc, MSM6242B_1SECOND);
+ dt->dt_min = msm6242b_read(sc, MSM6242B_10MINUTE) * 10 +
+ msm6242b_read(sc, MSM6242B_1MINUTE);
+ dt->dt_hour = (msm6242b_read(sc, MSM6242B_10HOUR_PMAM) &
+ MSM6242B_10HOUR_MASK) * 10 + msm6242b_read(sc, MSM6242B_1HOUR);
+ dt->dt_day = msm6242b_read(sc, MSM6242B_10DAY) * 10 +
+ msm6242b_read(sc, MSM6242B_1DAY);
+ dt->dt_mon = msm6242b_read(sc, MSM6242B_10MONTH) * 10 +
+ msm6242b_read(sc, MSM6242B_1MONTH);
+ dt->dt_year = msm6242b_read(sc, MSM6242B_10YEAR) * 10 +
+ msm6242b_read(sc, MSM6242B_1YEAR);
+ dt->dt_wday = msm6242b_read(sc, MSM6242B_WEEK);
+
+#ifdef MSM6242B_DEBUG
+ aprint_normal_dev(sc->sc_dev, "the time is %d %d %d %d %d %d\n",
+ dt->dt_year, dt->dt_mon, dt->dt_day, dt->dt_hour, dt->dt_min, dt->dt_sec);
+#endif
+
+ /* handle 12h mode */
+ if ((msm6242b_read(sc, MSM6242B_CONTROL_F) &
+ MSM6242B_CONTROL_F_24H) == 0) {
+ if ((msm6242b_read(sc, MSM6242B_10HOUR_PMAM) &
+ MSM6242B_PMAM_BIT) == 0 && dt->dt_hour == 12)
+ dt->dt_hour = 0;
+ else if ((msm6242b_read(sc, MSM6242B_10HOUR_PMAM) &
+ MSM6242B_PMAM_BIT) && dt->dt_hour != 12);
+ dt->dt_hour += 12;
+ }
+
+ msm6242b_free(sc);
+
+ dt->dt_year += MSM6242B_BASE_YEAR;
+ if (dt->dt_year < POSIX_BASE_YEAR)
+ dt->dt_year += 100;
+
+ if ((dt->dt_hour > 23) ||
+ (dt->dt_day > 31) ||
+ (dt->dt_mon > 12) ||
+ (dt->dt_year > 2036))
+ return (EINVAL);
+
+ return 0;
+}
+
+bool
+msm6242b_hold(struct msm6242b_softc *sc)
+{
+ int try;
+
+#define TRY_MAX 10
+ for (try = 0; try < TRY_MAX; try++) {
+ msm6242b_set(sc, MSM6242B_CONTROL_D, MSM6242B_CONTROL_D_HOLD);
+ if (msm6242b_read(sc, MSM6242B_CONTROL_D)
+ & MSM6242B_CONTROL_D_BUSY) {
+ aprint_normal_dev(sc->sc_dev, "gotta idle\n");
+ msm6242b_unset(sc, MSM6242B_CONTROL_D,
+ MSM6242B_CONTROL_D_HOLD);
+ delay(70);
+ } else {
+ aprint_normal_dev(sc->sc_dev, "not busy\n");
+ break;
+ }
+ }
+
+ if (try == TRY_MAX) {
+ aprint_error_dev(sc->sc_dev, "can't hold the chip\n");
+ return false;
+ }
+ return true;
+}
+
+void
+msm6242b_free(struct msm6242b_softc *sc)
+{
+ msm6242b_unset(sc, MSM6242B_CONTROL_D, MSM6242B_CONTROL_D_HOLD);
+}
+
+static uint8_t
+msm6242b_read(struct msm6242b_softc *sc, uint8_t reg)
+{
+ uint8_t r;
+ r = bus_space_read_1(sc->sc_iot, sc->sc_ioh, reg) & MSM6242B_MASK;
+ return r;
+}
+
+static void
+msm6242b_write(struct msm6242b_softc *sc, uint8_t reg, uint8_t val)
+{
+ bus_space_write_1(sc->sc_iot, sc->sc_ioh, reg, val);
+}
+
+static void
+msm6242b_set(struct msm6242b_softc *sc, uint8_t reg, uint8_t bits)
+{
+ uint8_t v;
+ v = msm6242b_read(sc, reg) | bits;
+ msm6242b_write(sc, reg, v);
+}
+
+static void
+msm6242b_unset(struct msm6242b_softc *sc, uint8_t reg, uint8_t bits)
+{
+ uint8_t v;
+ v = msm6242b_read(sc, reg) & ~bits;
+ msm6242b_write(sc, reg, v);
+}
+
+int
+msm6242b_settime_ymdhms(todr_chip_handle_t handle, struct clock_ymdhms *dt)
+{
+ struct msm6242b_softc *sc;
+ int ampm;
+ /* XXX: splsched(); */
+
+ sc = handle->cookie;
+
+ if(!msm6242b_hold(sc))
+ return (ENXIO);
+
+ ampm = 0;
+ if ((msm6242b_read(sc, MSM6242B_CONTROL_F) &
+ MSM6242B_CONTROL_F_24H) == 0) {
+ if (dt->dt_hour >= 12) {
+ ampm = MSM6242B_CONTROL_F_24H;
+ if (dt->dt_hour != 12)
+ dt->dt_hour -= 12;
+ } else if (dt->dt_hour == 0) {
+ dt->dt_hour = 12;
+ }
+ }
+
+ msm6242b_write(sc, MSM6242B_10HOUR_PMAM, (dt->dt_hour / 10) | ampm);
+ msm6242b_write(sc, MSM6242B_1HOUR, dt->dt_hour % 10);
+ msm6242b_write(sc, MSM6242B_10SECOND, dt->dt_sec / 10);
+ msm6242b_write(sc, MSM6242B_1SECOND, dt->dt_sec % 10);
+ msm6242b_write(sc, MSM6242B_10MINUTE, dt->dt_min / 10);
+ msm6242b_write(sc, MSM6242B_1MINUTE, dt->dt_min % 10);
+ msm6242b_write(sc, MSM6242B_10DAY, dt->dt_day / 10);
+ msm6242b_write(sc, MSM6242B_1DAY, dt->dt_day % 10);
+ msm6242b_write(sc, MSM6242B_10MONTH, dt->dt_mon / 10);
+ msm6242b_write(sc, MSM6242B_1MONTH, dt->dt_mon % 10);
+ msm6242b_write(sc, MSM6242B_10YEAR, (dt->dt_mon / 10) % 10);
+ msm6242b_write(sc, MSM6242B_1YEAR, dt->dt_mon % 10);
+ msm6242b_write(sc, MSM6242B_WEEK, dt->dt_wday);
+
+ msm6242b_free(sc);
+
+ return 0;
+}
+
Index: src/sys/dev/ic/msm6242breg.h
diff -u /dev/null src/sys/dev/ic/msm6242breg.h:1.1
--- /dev/null Wed Nov 14 01:52:48 2012
+++ src/sys/dev/ic/msm6242breg.h Wed Nov 14 01:52:48 2012
@@ -0,0 +1,70 @@
+/* $NetBSD: msm6242breg.h,v 1.1 2012/11/14 01:52:48 rkujawa Exp $ */
+
+/*-
+ * Copyright (c) 2012 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Radoslaw Kujawa.
+ *
+ * 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.
+ */
+
+#ifndef _MSM6242BREG_H_
+#define _MSM6242BREG_H_
+
+#define MSM6242B_1SECOND 0x0
+#define MSM6242B_10SECOND 0x1
+#define MSM6242B_1MINUTE 0x2
+#define MSM6242B_10MINUTE 0x3
+#define MSM6242B_1HOUR 0x4
+
+#define MSM6242B_10HOUR_PMAM 0x5
+#define MSM6242B_10HOUR_MASK 0x3
+#define MSM6242B_PMAM_BIT __BIT(2)
+
+#define MSM6242B_1DAY 0x6
+#define MSM6242B_10DAY 0x7
+#define MSM6242B_1MONTH 0x8
+#define MSM6242B_10MONTH 0x9
+#define MSM6242B_1YEAR 0xA
+#define MSM6242B_10YEAR 0xB
+#define MSM6242B_WEEK 0xC
+
+#define MSM6242B_CONTROL_D 0xD
+#define MSM6242B_CONTROL_D_HOLD __BIT(0)
+#define MSM6242B_CONTROL_D_BUSY __BIT(1)
+#define MSM6242B_CONTROL_D_IRQF __BIT(2)
+#define MSM6242B_CONTROL_D_30SECADJ __BIT(3)
+
+#define MSM6242B_CONTROL_E 0xE
+
+#define MSM6242B_CONTROL_F 0xF
+#define MSM6242B_CONTROL_F_24H __BIT(3)
+
+#define MSM6242B_MASK 0xF /* 4 significant bits only */
+#define MSM6242B_SIZE 0x10
+
+#define MSM6242B_BASE_YEAR 1900
+
+#endif /* _MSM6242BREG_H_ */
+
Index: src/sys/dev/ic/msm6242bvar.h
diff -u /dev/null src/sys/dev/ic/msm6242bvar.h:1.1
--- /dev/null Wed Nov 14 01:52:48 2012
+++ src/sys/dev/ic/msm6242bvar.h Wed Nov 14 01:52:48 2012
@@ -0,0 +1,47 @@
+/* $NetBSD: msm6242bvar.h,v 1.1 2012/11/14 01:52:48 rkujawa Exp $ */
+
+/*-
+ * Copyright (c) 2012 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Radoslaw Kujawa.
+ *
+ * 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.
+ */
+
+#ifndef _MSM6242BVAR_H_
+#define _MSM6242BVAR_H_
+
+struct msm6242b_softc {
+ device_t sc_dev;
+
+ bus_space_tag_t sc_iot;
+ bus_space_handle_t sc_ioh;
+
+ struct todr_chip_handle sc_handle;
+};
+
+void msm6242b_attach(struct msm6242b_softc *);
+
+#endif /* _MSM6242BVAR_H_ */
+
