1 /* $NetBSD: btn_obio.c,v 1.5 2023/12/20 13:55:17 thorpej Exp $ */ 2 3 /*- 4 * Copyright (C) 2005, 2006 NONAKA Kimihiro <nonaka (at) netbsd.org> 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, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __KERNEL_RCSID(0, "$NetBSD: btn_obio.c,v 1.5 2023/12/20 13:55:17 thorpej Exp $"); 30 31 #include <sys/types.h> 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/device.h> 35 #include <sys/kernel.h> 36 #include <sys/conf.h> 37 #include <sys/ioctl.h> 38 #include <sys/callout.h> 39 40 #include <arm/xscale/i80321var.h> 41 42 #include <sys/bus.h> 43 #include <machine/intr.h> 44 45 #include <dev/sysmon/sysmonvar.h> 46 #include <dev/sysmon/sysmon_taskq.h> 47 48 #include <evbarm/hdl_g/hdlgreg.h> 49 #include <evbarm/hdl_g/obiovar.h> 50 51 struct btn_obio_softc { 52 device_t sc_dev; 53 bus_space_tag_t sc_iot; 54 bus_space_handle_t sc_ioh; 55 void *sc_ih; 56 57 struct sysmon_pswitch sc_smpsw[2]; 58 59 int sc_mask; 60 }; 61 62 static int btn_obio_match(device_t, cfdata_t, void *); 63 static void btn_obio_attach(device_t, device_t, void *); 64 65 static int btn_intr(void *aux); 66 static void btn_sysmon_pressed_event(void *arg); 67 68 CFATTACH_DECL_NEW(btn_obio, sizeof(struct btn_obio_softc), 69 btn_obio_match, btn_obio_attach, NULL, NULL); 70 71 static int 72 btn_obio_match(device_t parent, cfdata_t cf, void *aux) 73 { 74 75 /* We take it on faith that the device is there. */ 76 return 1; 77 } 78 79 static void 80 btn_obio_attach(device_t parent, device_t self, void *aux) 81 { 82 struct obio_attach_args *oba = aux; 83 struct btn_obio_softc *sc = device_private(self); 84 int error; 85 86 sc->sc_dev = self; 87 sc->sc_iot = oba->oba_st; 88 error = bus_space_map(sc->sc_iot, oba->oba_addr, 1, 0, &sc->sc_ioh); 89 if (error) { 90 aprint_error(": failed to map registers: %d\n", error); 91 return; 92 } 93 94 sysmon_power_settype("landisk"); 95 sysmon_task_queue_init(); 96 97 /* power switch */ 98 sc->sc_smpsw[0].smpsw_name = device_xname(self); 99 sc->sc_smpsw[0].smpsw_type = PSWITCH_TYPE_POWER; 100 if (sysmon_pswitch_register(&sc->sc_smpsw[0]) != 0) { 101 aprint_error(": unable to register power button with sysmon\n"); 102 return; 103 } 104 sc->sc_mask |= BTNSTAT_POWER; 105 hdlg_enable_pldintr(INTEN_PWRSW); 106 107 /* reset button */ 108 sc->sc_smpsw[1].smpsw_name = device_xname(self); 109 sc->sc_smpsw[1].smpsw_type = PSWITCH_TYPE_RESET; 110 if (sysmon_pswitch_register(&sc->sc_smpsw[1]) != 0) { 111 aprint_error(": unable to register reset button with sysmon\n"); 112 return; 113 } 114 sc->sc_mask |= BTNSTAT_RESET; 115 116 sc->sc_ih = i80321_intr_establish(oba->oba_irq, IPL_TTY, btn_intr, sc); 117 if (sc->sc_ih == NULL) { 118 aprint_error(": couldn't establish intr handler"); 119 return; 120 } 121 hdlg_enable_pldintr(INTEN_BUTTON); 122 123 aprint_normal("\n"); 124 } 125 126 static int 127 btn_intr(void *arg) 128 { 129 struct btn_obio_softc *sc = (void *)arg; 130 int status; 131 int rv; 132 133 status = (int8_t)bus_space_read_1(sc->sc_iot, sc->sc_ioh, 0); 134 if (status == -1) { 135 return 0; 136 } 137 138 rv = 0; 139 status = ~status; 140 if (status & BTNSTAT_POWER) { 141 if (sc->sc_mask & BTNSTAT_POWER) { 142 hdlg_disable_pldintr(INTEN_PWRSW|INTEN_BUTTON); 143 i80321_intr_disestablish(sc->sc_ih); 144 sc->sc_ih = NULL; 145 sysmon_task_queue_sched(0, btn_sysmon_pressed_event, 146 &sc->sc_smpsw[0]); 147 } else { 148 aprint_error("%s: power button pressed\n", 149 device_xname(sc->sc_dev)); 150 } 151 rv = 1; 152 } else if (status & BTNSTAT_RESET) { 153 if (sc->sc_mask & BTNSTAT_RESET) { 154 hdlg_disable_pldintr(INTEN_PWRSW|INTEN_BUTTON); 155 i80321_intr_disestablish(sc->sc_ih); 156 sc->sc_ih = NULL; 157 sysmon_task_queue_sched(0, btn_sysmon_pressed_event, 158 &sc->sc_smpsw[1]); 159 } else { 160 aprint_error("%s: reset button pressed\n", 161 device_xname(sc->sc_dev)); 162 } 163 rv = 1; 164 } 165 166 return rv; 167 } 168 169 static void 170 btn_sysmon_pressed_event(void *arg) 171 { 172 struct sysmon_pswitch *smpsw = (void *)arg; 173 174 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 175 } 176
Indexes created Sun Oct 25 00:26:45 UTC 2026