1/* $NetBSD: a9wdt_fdt.c,v 1.4 2021/08/07 16:18:43 thorpej Exp $ */ 2 3/*- 4 * Copyright (c) 2019 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Nick Hudson 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32#include <sys/cdefs.h> 33__KERNEL_RCSID(0, "$NetBSD: a9wdt_fdt.c,v 1.4 2021/08/07 16:18:43 thorpej Exp $"); 34 35#if 0 36#include <sys/param.h> 37#include <sys/bus.h> 38#include <sys/device.h> 39#include <sys/intr.h> 40#include <sys/systm.h> 41#include <sys/kernel.h> 42#include <sys/kmem.h> 43 44#include <arm/cortex/a9tmr_intr.h> 45#include <arm/cortex/mpcore_var.h> 46#include <arm/cortex/a9tmr_var.h> 47#endif 48 49 50#include <sys/param.h> 51#include <sys/bus.h> 52 53#include <arm/cortex/mpcore_var.h> 54 55 56#include <dev/fdt/fdtvar.h> 57#include <arm/fdt/arm_fdtvar.h> 58 59static int a9wdt_fdt_match(device_t, cfdata_t, void *); 60static void a9wdt_fdt_attach(device_t, device_t, void *); 61 62struct a9wdt_fdt_softc { 63 device_t sc_dev; 64 struct clk *sc_clk; 65}; 66 67CFATTACH_DECL_NEW(a9wdt_fdt, sizeof(struct a9wdt_fdt_softc), 68 a9wdt_fdt_match, a9wdt_fdt_attach, NULL, NULL); 69 70static const struct device_compatible_entry compat_data[] = { 71 { .compat = "arm,cortex-a9-twd-wdt" }, 72 { .compat = "arm,cortex-a5-twd-wdt" }, 73 DEVICE_COMPAT_EOL 74}; 75 76static int 77a9wdt_fdt_match(device_t parent, cfdata_t cf, void *aux) 78{ 79 struct fdt_attach_args * const faa = aux; 80 81 return of_compatible_match(faa->faa_phandle, compat_data); 82} 83 84static void 85a9wdt_fdt_attach(device_t parent, device_t self, void *aux) 86{ 87 struct a9wdt_fdt_softc * const sc = device_private(self); 88 struct fdt_attach_args * const faa = aux; 89 const int phandle = faa->faa_phandle; 90 bus_space_handle_t bsh; 91 92 sc->sc_dev = self; 93 94 char intrstr[128]; 95 if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) { 96 aprint_error(": failed to decode interrupt\n"); 97 return; 98 } 99 100 aprint_naive("\n"); 101 aprint_normal("\n"); 102 103 bus_addr_t addr; 104 bus_size_t size; 105 if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) { 106 aprint_error(": couldn't get registers\n"); 107 return; 108 } 109 if (bus_space_map(faa->faa_bst, addr, size, 0, &bsh)) { 110 aprint_error(": couldn't map registers\n"); 111 return; 112 } 113 114 struct mpcore_attach_args mpcaa = { 115 .mpcaa_name = "a9wdt", 116 .mpcaa_memt = faa->faa_bst, 117 .mpcaa_memh = bsh, 118 .mpcaa_irq = -1, 119 }; 120 121 config_found(self, &mpcaa, NULL, CFARGS_NONE); 122} 123 124