123 lines
3.5 KiB
C
123 lines
3.5 KiB
C
/* $NetBSD: a9wdt_fdt.c,v 1.1 2019/08/10 17:03:59 skrll Exp $ */
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/*-
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* Copyright (c) 2019 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Nick Hudson
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: a9wdt_fdt.c,v 1.1 2019/08/10 17:03:59 skrll Exp $");
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#if 0
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/device.h>
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#include <sys/intr.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/kmem.h>
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#include <arm/cortex/a9tmr_intr.h>
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#include <arm/cortex/mpcore_var.h>
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#include <arm/cortex/a9tmr_var.h>
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#endif
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <arm/cortex/mpcore_var.h>
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#include <dev/fdt/fdtvar.h>
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#include <arm/fdt/arm_fdtvar.h>
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static int a9wdt_fdt_match(device_t, cfdata_t, void *);
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static void a9wdt_fdt_attach(device_t, device_t, void *);
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struct a9wdt_fdt_softc {
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device_t sc_dev;
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struct clk *sc_clk;
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};
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CFATTACH_DECL_NEW(a9wdt_fdt, sizeof(struct a9wdt_fdt_softc),
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a9wdt_fdt_match, a9wdt_fdt_attach, NULL, NULL);
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static int
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a9wdt_fdt_match(device_t parent, cfdata_t cf, void *aux)
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{
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const char * const compatible[] = {
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"arm,cortex-a9-twd-wdt",
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"arm,cortex-a5-twd-wdt",
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NULL
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};
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struct fdt_attach_args * const faa = aux;
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return of_compatible(faa->faa_phandle, compatible) >= 0;
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}
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static void
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a9wdt_fdt_attach(device_t parent, device_t self, void *aux)
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{
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struct a9wdt_fdt_softc * const sc = device_private(self);
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struct fdt_attach_args * const faa = aux;
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const int phandle = faa->faa_phandle;
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bus_space_handle_t bsh;
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sc->sc_dev = self;
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char intrstr[128];
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if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) {
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aprint_error(": failed to decode interrupt\n");
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return;
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}
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aprint_naive("\n");
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aprint_normal("\n");
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bus_addr_t addr;
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bus_size_t size;
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if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) {
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aprint_error(": couldn't get registers\n");
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return;
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}
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if (bus_space_map(faa->faa_bst, addr, size, 0, &bsh)) {
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aprint_error(": couldn't map registers\n");
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return;
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}
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struct mpcore_attach_args mpcaa = {
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.mpcaa_name = "a9wdt",
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.mpcaa_memt = faa->faa_bst,
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.mpcaa_memh = bsh,
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.mpcaa_irq = -1,
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};
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config_found(self, &mpcaa, NULL);
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}
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