1/* $NetBSD: plkmi_fdt.c,v 1.3 2021/01/27 03:10:19 thorpej Exp $ */ 2 3/*- 4 * Copyright (c) 2017 Jared McNeill <jmcneill@invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29#include <sys/cdefs.h> 30__KERNEL_RCSID(0, "$NetBSD: plkmi_fdt.c,v 1.3 2021/01/27 03:10:19 thorpej Exp $"); 31 32#include <sys/param.h> 33#include <sys/bus.h> 34#include <sys/device.h> 35#include <sys/systm.h> 36#include <sys/kernel.h> 37 38#include <dev/fdt/fdtvar.h> 39 40#include <dev/ic/pl050var.h> 41 42static int plkmi_fdt_match(device_t, cfdata_t, void *); 43static void plkmi_fdt_attach(device_t, device_t, void *); 44 45static const struct device_compatible_entry compat_data[] = { 46 { .compat = "arm,pl050" }, 47 DEVICE_COMPAT_EOL 48}; 49 50CFATTACH_DECL_NEW(plkmi_fdt, sizeof(struct plkmi_softc), 51 plkmi_fdt_match, plkmi_fdt_attach, NULL, NULL); 52 53static int 54plkmi_fdt_match(device_t parent, cfdata_t cf, void *aux) 55{ 56 struct fdt_attach_args * const faa = aux; 57 58 return of_compatible_match(faa->faa_phandle, compat_data); 59} 60 61static void 62plkmi_fdt_attach(device_t parent, device_t self, void *aux) 63{ 64 struct plkmi_softc * const sc = device_private(self); 65 struct fdt_attach_args * const faa = aux; 66 const int phandle = faa->faa_phandle; 67 char intrstr[128]; 68 struct clk *clk; 69 bus_addr_t addr; 70 bus_size_t size; 71 void *ih; 72 73 if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) { 74 aprint_error(": missing 'reg' property\n"); 75 return; 76 } 77 78 if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) { 79 aprint_error_dev(self, "failed to decode interrupt\n"); 80 return; 81 } 82 83 84 for (int i = 0; (clk = fdtbus_clock_get_index(phandle, i)); i++) 85 if (clk_enable(clk) != 0) { 86 aprint_error(": couldn't enable clock #%d\n", i); 87 return; 88 } 89 90 sc->sc_dev = self; 91 sc->sc_bst = faa->faa_bst; 92 if (bus_space_map(faa->faa_bst, addr, size, 0, &sc->sc_bsh)) { 93 aprint_error(": couldn't map device\n"); 94 return; 95 } 96 97 plkmi_attach(sc); 98 99 ih = fdtbus_intr_establish_xname(phandle, 0, IPL_TTY, 0, plkmi_intr, sc, 100 device_xname(self)); 101 if (ih == NULL) { 102 aprint_error_dev(self, "couldn't install interrupt handler\n"); 103 return; 104 } 105 aprint_normal_dev(self, "interrupting on %s\n", intrstr); 106} 107