[src/trunk]: src/sys/arch/arm/omap AM335x driver attachment goop for omapdmti...

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

details:   https://anonhg.NetBSD.org/src/rev/1ef7a8f7945a
branches:  trunk
changeset: 783219:1ef7a8f7945a
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Tue Dec 11 19:06:23 2012 +0000

description:
AM335x driver attachment goop for omapdmtimer.

diffstat:

 sys/arch/arm/omap/am335x_dmtimer.c |  144 +++++++++++++++++++++++++++++++++++++
 1 files changed, 144 insertions(+), 0 deletions(-)

diffs (148 lines):

diff -r ef6951d95040 -r 1ef7a8f7945a sys/arch/arm/omap/am335x_dmtimer.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/arm/omap/am335x_dmtimer.c        Tue Dec 11 19:06:23 2012 +0000
@@ -0,0 +1,144 @@
+/*     $NetBSD: am335x_dmtimer.c,v 1.1 2012/12/11 19:06:23 riastradh Exp $     */
+
+/*
+ * TI OMAP Dual-mode timer attachments for AM335x
+ */
+
+/*-
+ * Copyright (c) 2012 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Taylor R. Campbell.
+ *
+ * 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>
+__KERNEL_RCSID(0, "$NetBSD: am335x_dmtimer.c,v 1.1 2012/12/11 19:06:23 riastradh Exp $");
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/device.h>
+#include <sys/kernel.h>
+
+#include <arm/omap/am335x_prcm.h>
+
+#include <arm/omap/omap2_obiovar.h>
+#include <arm/omap/omap_dmtimervar.h>
+
+#ifndef STATHZ
+#  define STATHZ       97
+#endif
+
+struct am335x_dmtimer {
+       const char *ad_name;
+       unsigned int ad_version;
+       bus_addr_t ad_base_addr;
+       int ad_intr;
+       struct omap_module ad_module;
+};
+
+static const struct am335x_dmtimer am335x_dmtimers[] = {
+       { "DMTIMER0",   2, 0x44e05000, 66, { AM335X_PRCM_CM_WKUP, 0x10 } },
+       { "DMTIMER1ms", 1, 0x44e31000, 67, { AM335X_PRCM_CM_WKUP, 0xc4 } },
+       { "DMTIMER2",   2, 0x48040000, 68, { AM335X_PRCM_CM_PER, 0x80 } },
+       { "DMTIMER3",   2, 0x48042000, 69, { AM335X_PRCM_CM_PER, 0x84 } },
+       { "DMTIMER4",   2, 0x48044000, 92, { AM335X_PRCM_CM_PER, 0x88 } },
+       { "DMTIMER5",   2, 0x48046000, 93, { AM335X_PRCM_CM_PER, 0xec } },
+       { "DMTIMER6",   2, 0x48048000, 94, { AM335X_PRCM_CM_PER, 0xf0 } },
+       { "DMTIMER7",   2, 0x4804a000, 95, { AM335X_PRCM_CM_PER, 0x7c } },
+};
+
+static int     am335x_dmtimer_match(device_t, cfdata_t, void *);
+static void    am335x_dmtimer_attach(device_t, device_t, void *);
+
+CFATTACH_DECL_NEW(omap_dmtimer_obio, sizeof(struct omap_dmtimer_softc),
+    am335x_dmtimer_match, am335x_dmtimer_attach, NULL, NULL);
+
+static int
+am335x_dmtimer_match(device_t parent, cfdata_t match, void *aux)
+{
+       struct obio_attach_args *obio = aux;
+       size_t i;
+
+       if (obio->obio_size != 0x1000)
+               return 0;
+
+       for (i = 0; i < __arraycount(am335x_dmtimers); i++)
+               if ((obio->obio_addr == am335x_dmtimers[i].ad_base_addr) &&
+                   (obio->obio_intr == am335x_dmtimers[i].ad_intr))
+                       return 1;
+
+       return 0;
+}
+
+static void
+am335x_dmtimer_attach(device_t parent, device_t self, void *aux)
+{
+       struct omap_dmtimer_softc *sc = device_private(self);
+       struct obio_attach_args *obio = aux;
+       const struct am335x_dmtimer *ad = NULL;
+       size_t i;
+
+       for (i = 0; i < __arraycount(am335x_dmtimers); i++)
+               if ((obio->obio_addr == am335x_dmtimers[i].ad_base_addr) &&
+                   (obio->obio_intr == am335x_dmtimers[i].ad_intr)) {
+                       ad = &am335x_dmtimers[i];
+                       break;
+               }
+
+       KASSERT(ad != NULL);
+       aprint_normal(": %s\n", ad->ad_name);
+
+       sc->sc_dev = self;
+       sc->sc_module = &ad->ad_module;
+       sc->sc_version = ad->ad_version;
+       sc->sc_intr = ad->ad_intr;
+       sc->sc_iot = obio->obio_iot;
+
+       KASSERT(obio->obio_size == 0x1000);
+       if (bus_space_map(obio->obio_iot, obio->obio_addr, obio->obio_size, 0,
+               &sc->sc_ioh) != 0)
+               panic("%s: unable to map bus space", device_xname(self));
+
+       /* XXX Crock.  */
+       switch (device_unit(self)) {
+       case 0:
+               omap_dmtimer_attach_hardclock(sc);
+               break;
+
+       case 1:
+               omap_dmtimer_attach_timecounter(sc);
+               break;
+
+       case 2:
+               KASSERT(stathz == 0);
+               profhz = stathz = STATHZ;
+               omap_dmtimer_attach_statclock(sc);
+               break;
+
+       default:
+               panic("%s: but what am I to do?", device_xname(self));
+       }
+}