1 /* $NetBSD: pwrsw_obio.c,v 1.3 2012/01/21 19:44:29 nonaka Exp $ */ 2 3 /*- 4 * Copyright (C) 2005 NONAKA Kimihiro <nonaka@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 "btn_obio.h" 29 30 #include <sys/cdefs.h> 31 __KERNEL_RCSID(0, "$NetBSD: pwrsw_obio.c,v 1.3 2012/01/21 19:44:29 nonaka Exp $"); 32 33 #include <sys/types.h> 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/device.h> 37 #include <sys/malloc.h> 38 #include <sys/conf.h> 39 #include <sys/ioctl.h> 40 41 #include <dev/sysmon/sysmonvar.h> 42 #include <dev/sysmon/sysmon_taskq.h> 43 44 #include <sh3/devreg.h> 45 46 #include <landisk/landisk/landiskreg.h> 47 #include <landisk/dev/obiovar.h> 48 49 struct pwrsw_obio_softc { 50 device_t sc_dev; 51 void *sc_ih; 52 53 struct sysmon_pswitch sc_smpsw; /* our sysmon glue */ 54 55 int sc_flags; 56 #define SYSMON_ATTACHED 1 57 }; 58 59 static int pwrsw_obio_probe(device_t, cfdata_t, void *); 60 static void pwrsw_obio_attach(device_t, device_t, void *); 61 62 static int pwrsw_intr(void *aux); 63 static void pwrsw_pressed_event(void *arg); 64 65 CFATTACH_DECL_NEW(pwrsw_obio, sizeof(struct pwrsw_obio_softc), 66 pwrsw_obio_probe, pwrsw_obio_attach, NULL, NULL); 67 68 static struct pwrsw_obio_softc *pwrsw_softc; 69 70 static int 71 pwrsw_obio_probe(device_t parent, cfdata_t cfp, void *aux) 72 { 73 struct obio_attach_args *oa = aux; 74 75 if (pwrsw_softc) 76 return (0); 77 78 oa->oa_nio = 0; 79 oa->oa_niomem = 0; 80 oa->oa_nirq = 1; 81 oa->oa_irq[0].or_irq = LANDISK_INTR_PWRSW; 82 83 return (1); 84 } 85 86 static void 87 pwrsw_obio_attach(device_t parent, device_t self, void *aux) 88 { 89 struct pwrsw_obio_softc *sc; 90 91 aprint_naive("\n"); 92 aprint_normal(": Power Switch\n"); 93 94 sc = device_private(self); 95 sc->sc_dev = self; 96 97 pwrsw_softc = sc; 98 99 sc->sc_smpsw.smpsw_name = device_xname(self); 100 sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_POWER; 101 102 sc->sc_ih = extintr_establish(LANDISK_INTR_PWRSW, IPL_TTY, 103 pwrsw_intr, sc); 104 if (sc->sc_ih == NULL) { 105 aprint_error_dev(self, "unable to establish interrupt"); 106 panic("extintr_establish"); 107 } 108 109 if (sysmon_pswitch_register(&sc->sc_smpsw) != 0) { 110 aprint_error_dev(self, "unable to register with sysmon\n"); 111 return; 112 } 113 sc->sc_flags |= SYSMON_ATTACHED; 114 } 115 116 static int 117 pwrsw_intr(void *arg) 118 { 119 struct pwrsw_obio_softc *sc = arg; 120 int status; 121 122 status = (int8_t)_reg_read_1(LANDISK_BTNSTAT); 123 if (status == -1) { 124 return (0); 125 } 126 127 status = ~status; 128 if (status & BTN_POWER_BIT) { 129 if (sc->sc_flags & SYSMON_ATTACHED) { 130 sysmon_task_queue_sched(0, pwrsw_pressed_event, sc); 131 extintr_disable(sc->sc_ih); 132 #if NBTN_OBIO > 0 133 extintr_disable_by_num(LANDISK_INTR_BTN); 134 #endif 135 } else { 136 aprint_normal_dev(sc->sc_dev, "pressed\n"); 137 } 138 _reg_write_1(LANDISK_PWRSW_INTCLR, 1); 139 return (1); 140 } 141 return (0); 142 } 143 144 static void 145 pwrsw_pressed_event(void *arg) 146 { 147 struct pwrsw_obio_softc *sc = arg; 148 149 sysmon_pswitch_event(&sc->sc_smpsw, PSWITCH_EVENT_PRESSED); 150 } 151