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/*-
* Copyright (c) 2019 Emmanuel Vadot <manu@FreeBSD.org>
*
* Copyright (c) 2020 Oskar Holmlund <oskar.holmlund@ohdata.se>
*
* 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 ``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 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>
/* Based on sys/arm/ti/ti_sysc.c */
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/fbio.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/rman.h>
#include <sys/resource.h>
#include <machine/bus.h>
#include <vm/vm.h>
#include <vm/vm_extern.h>
#include <vm/vm_kern.h>
#include <vm/pmap.h>
#include <dev/fdt/simplebus.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#define TI_AM3_SCM 14
#define TI_AM4_SCM 13
#define TI_DM814_SCRM 12
#define TI_DM816_SCRM 11
#define TI_OMAP2_SCM 10
#define TI_OMAP3_SCM 9
#define TI_OMAP4_SCM_CORE 8
#define TI_OMAP4_SCM_PADCONF_CORE 7
#define TI_OMAP4_SCM_WKUP 6
#define TI_OMAP4_SCM_PADCONF_WKUP 5
#define TI_OMAP5_SCM_CORE 4
#define TI_OMAP5_SCM_PADCONF_CORE 3
#define TI_OMAP5_SCM_WKUP_PAD_CONF 2
#define TI_DRA7_SCM_CORE 1
#define TI_SCM_END 0
static struct ofw_compat_data compat_data[] = {
{ "ti,am3-scm", TI_AM3_SCM },
{ "ti,am4-scm", TI_AM4_SCM },
{ "ti,dm814-scrm", TI_DM814_SCRM },
{ "ti,dm816-scrm", TI_DM816_SCRM },
{ "ti,omap2-scm", TI_OMAP2_SCM },
{ "ti,omap3-scm", TI_OMAP3_SCM },
{ "ti,omap4-scm-core", TI_OMAP4_SCM_CORE },
{ "ti,omap4-scm-padconf-core", TI_OMAP4_SCM_PADCONF_CORE },
{ "ti,omap4-scm-wkup", TI_OMAP4_SCM_WKUP },
{ "ti,omap4-scm-padconf-wkup", TI_OMAP4_SCM_PADCONF_WKUP },
{ "ti,omap5-scm-core", TI_OMAP5_SCM_CORE },
{ "ti,omap5-scm-padconf-core", TI_OMAP5_SCM_PADCONF_CORE },
{ "ti,omap5-scm-wkup-pad-conf", TI_OMAP5_SCM_WKUP_PAD_CONF },
{ "ti,dra7-scm-core", TI_DRA7_SCM_CORE },
{ NULL, TI_SCM_END }
};
struct ti_scm_softc {
struct simplebus_softc sc;
device_t dev;
};
static int ti_scm_probe(device_t dev);
static int ti_scm_attach(device_t dev);
static int ti_scm_detach(device_t dev);
static int
ti_scm_probe(device_t dev)
{
if (!ofw_bus_status_okay(dev))
return (ENXIO);
if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
return (ENXIO);
device_set_desc(dev, "TI OMAP Control Module");
return (BUS_PROBE_DEFAULT);
}
static int
ti_scm_attach(device_t dev)
{
struct ti_scm_softc *sc;
device_t cdev;
phandle_t node, child;
sc = device_get_softc(dev);
sc->dev = dev;
node = ofw_bus_get_node(dev);
simplebus_init(dev, node);
if (simplebus_fill_ranges(node, &sc->sc) < 0) {
device_printf(dev, "could not get ranges\n");
return (ENXIO);
}
for (child = OF_child(node); child > 0; child = OF_peer(child)) {
cdev = simplebus_add_device(dev, child, 0, NULL, -1, NULL);
if (cdev != NULL)
device_probe_and_attach(cdev);
}
bus_attach_children(dev);
return (0);
}
static int
ti_scm_detach(device_t dev)
{
return (EBUSY);
}
static device_method_t ti_scm_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, ti_scm_probe),
DEVMETHOD(device_attach, ti_scm_attach),
DEVMETHOD(device_detach, ti_scm_detach),
DEVMETHOD_END
};
DEFINE_CLASS_1(ti_scm, ti_scm_driver, ti_scm_methods,
sizeof(struct ti_scm_softc), simplebus_driver);
EARLY_DRIVER_MODULE(ti_scm, simplebus, ti_scm_driver, 0, 0,
BUS_PASS_BUS + BUS_PASS_ORDER_FIRST);
MODULE_VERSION(ti_scm, 1);
MODULE_DEPEND(ti_scm, ti_sysc, 1, 1, 1);
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