161 lines
4.5 KiB
C
161 lines
4.5 KiB
C
/*-
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* Copyright (c) 2019 Emmanuel Vadot <manu@FreeBSD.org>
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*
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* Copyright (c) 2020 Oskar Holmlund <oskar.holmlund@ohdata.se>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/* Based on sys/arm/ti/ti_sysc.c */
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/fbio.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/rman.h>
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#include <sys/resource.h>
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#include <machine/bus.h>
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#include <vm/vm.h>
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#include <vm/vm_extern.h>
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#include <vm/vm_kern.h>
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#include <vm/pmap.h>
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#include <dev/fdt/simplebus.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#define TI_AM3_SCM 14
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#define TI_AM4_SCM 13
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#define TI_DM814_SCRM 12
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#define TI_DM816_SCRM 11
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#define TI_OMAP2_SCM 10
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#define TI_OMAP3_SCM 9
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#define TI_OMAP4_SCM_CORE 8
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#define TI_OMAP4_SCM_PADCONF_CORE 7
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#define TI_OMAP4_SCM_WKUP 6
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#define TI_OMAP4_SCM_PADCONF_WKUP 5
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#define TI_OMAP5_SCM_CORE 4
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#define TI_OMAP5_SCM_PADCONF_CORE 3
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#define TI_OMAP5_SCM_WKUP_PAD_CONF 2
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#define TI_DRA7_SCM_CORE 1
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#define TI_SCM_END 0
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static struct ofw_compat_data compat_data[] = {
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{ "ti,am3-scm", TI_AM3_SCM },
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{ "ti,am4-scm", TI_AM4_SCM },
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{ "ti,dm814-scrm", TI_DM814_SCRM },
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{ "ti,dm816-scrm", TI_DM816_SCRM },
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{ "ti,omap2-scm", TI_OMAP2_SCM },
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{ "ti,omap3-scm", TI_OMAP3_SCM },
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{ "ti,omap4-scm-core", TI_OMAP4_SCM_CORE },
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{ "ti,omap4-scm-padconf-core", TI_OMAP4_SCM_PADCONF_CORE },
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{ "ti,omap4-scm-wkup", TI_OMAP4_SCM_WKUP },
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{ "ti,omap4-scm-padconf-wkup", TI_OMAP4_SCM_PADCONF_WKUP },
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{ "ti,omap5-scm-core", TI_OMAP5_SCM_CORE },
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{ "ti,omap5-scm-padconf-core", TI_OMAP5_SCM_PADCONF_CORE },
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{ "ti,omap5-scm-wkup-pad-conf", TI_OMAP5_SCM_WKUP_PAD_CONF },
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{ "ti,dra7-scm-core", TI_DRA7_SCM_CORE },
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{ NULL, TI_SCM_END }
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};
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struct ti_scm_softc {
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struct simplebus_softc sc;
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device_t dev;
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};
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static int ti_scm_probe(device_t dev);
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static int ti_scm_attach(device_t dev);
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static int ti_scm_detach(device_t dev);
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static int
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ti_scm_probe(device_t dev)
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{
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if (!ofw_bus_status_okay(dev))
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return (ENXIO);
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if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
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return (ENXIO);
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device_set_desc(dev, "TI OMAP Control Module");
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return (BUS_PROBE_DEFAULT);
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}
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static int
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ti_scm_attach(device_t dev)
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{
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struct ti_scm_softc *sc;
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device_t cdev;
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phandle_t node, child;
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sc = device_get_softc(dev);
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sc->dev = dev;
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node = ofw_bus_get_node(dev);
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simplebus_init(dev, node);
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if (simplebus_fill_ranges(node, &sc->sc) < 0) {
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device_printf(dev, "could not get ranges\n");
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return (ENXIO);
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}
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for (child = OF_child(node); child > 0; child = OF_peer(child)) {
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cdev = simplebus_add_device(dev, child, 0, NULL, -1, NULL);
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if (cdev != NULL)
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device_probe_and_attach(cdev);
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}
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return (bus_generic_attach(dev));
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}
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static int
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ti_scm_detach(device_t dev)
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{
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return (EBUSY);
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}
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static device_method_t ti_scm_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, ti_scm_probe),
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DEVMETHOD(device_attach, ti_scm_attach),
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DEVMETHOD(device_detach, ti_scm_detach),
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DEVMETHOD_END
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};
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DEFINE_CLASS_1(ti_scm, ti_scm_driver, ti_scm_methods,
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sizeof(struct ti_scm_softc), simplebus_driver);
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static devclass_t ti_scm_devclass;
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EARLY_DRIVER_MODULE(ti_scm, simplebus, ti_scm_driver,
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ti_scm_devclass, 0, 0, BUS_PASS_BUS + BUS_PASS_ORDER_FIRST);
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MODULE_VERSION(ti_scm, 1);
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MODULE_DEPEND(ti_scm, ti_sysc, 1, 1, 1);
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