[src/trunk]: src/sys/dev/ic Add MI OKI MSM6242B RTC driver.

[rkujawa <rkujawa%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/01ec5090512a
branches:  trunk
changeset: 782680:01ec5090512a
user:      rkujawa <rkujawa%NetBSD.org@localhost>
date:      Wed Nov 14 01:52:48 2012 +0000

description:
Add MI OKI MSM6242B RTC driver.

diffstat:

 sys/dev/ic/msm6242b.c    |  245 +++++++++++++++++++++++++++++++++++++++++++++++
 sys/dev/ic/msm6242breg.h |   70 +++++++++++++
 sys/dev/ic/msm6242bvar.h |   47 +++++++++
 3 files changed, 362 insertions(+), 0 deletions(-)

diffs (truncated from 374 to 300 lines):

diff -r ffa01f1d456f -r 01ec5090512a sys/dev/ic/msm6242b.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/dev/ic/msm6242b.c     Wed Nov 14 01:52:48 2012 +0000
@@ -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;
+}
+
diff -r ffa01f1d456f -r 01ec5090512a sys/dev/ic/msm6242breg.h
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/dev/ic/msm6242breg.h  Wed Nov 14 01:52:48 2012 +0000
@@ -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