1 /* $NetBSD: pwrsw_obio.c,v 1.2 2008/03/27 02:52:04 uwe Exp $ */ 2 3 /*- 4 * Copyright (c) 2005 NONAKA Kimihiro 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 REGENTS AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, 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 "btn_obio.h" 30 31 #include <sys/cdefs.h> 32 __KERNEL_RCSID(0, "$NetBSD: pwrsw_obio.c,v 1.2 2008/03/27 02:52:04 uwe Exp $"); 33 34 #include <sys/types.h> 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/device.h> 38 #include <sys/malloc.h> 39 #include <sys/conf.h> 40 #include <sys/ioctl.h> 41 42 #include <dev/sysmon/sysmonvar.h> 43 #include <dev/sysmon/sysmon_taskq.h> 44 45 #include <sh3/devreg.h> 46 47 #include <landisk/landisk/landiskreg.h> 48 #include <landisk/dev/obiovar.h> 49 50 struct pwrsw_obio_softc { 51 device_t sc_dev; 52 void *sc_ih; 53 54 struct sysmon_pswitch sc_smpsw; /* our sysmon glue */ 55 56 int sc_flags; 57 #define SYSMON_ATTACHED 1 58 }; 59 60 static int pwrsw_obio_probe(device_t, cfdata_t, void *); 61 static void pwrsw_obio_attach(device_t, device_t, void *); 62 63 static int pwrsw_intr(void *aux); 64 static void pwrsw_pressed_event(void *arg); 65 66 CFATTACH_DECL_NEW(pwrsw_obio, sizeof(struct pwrsw_obio_softc), 67 pwrsw_obio_probe, pwrsw_obio_attach, NULL, NULL); 68 69 static struct pwrsw_obio_softc *pwrsw_softc; 70 71 static int 72 pwrsw_obio_probe(device_t parent, cfdata_t cfp, void *aux) 73 { 74 struct obio_attach_args *oa = aux; 75 76 if (pwrsw_softc) 77 return (0); 78 79 oa->oa_nio = 0; 80 oa->oa_niomem = 0; 81 oa->oa_nirq = 1; 82 oa->oa_irq[0].or_irq = LANDISK_INTR_PWRSW; 83 84 return (1); 85 } 86 87 static void 88 pwrsw_obio_attach(device_t parent, device_t self, void *aux) 89 { 90 struct pwrsw_obio_softc *sc; 91 92 aprint_naive("\n"); 93 aprint_normal(": Power Switch\n"); 94 95 sc = device_private(self); 96 sc->sc_dev = self; 97 98 pwrsw_softc = sc; 99 100 sc->sc_smpsw.smpsw_name = device_xname(self); 101 sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_POWER; 102 103 sc->sc_ih = extintr_establish(LANDISK_INTR_PWRSW, IPL_TTY, 104 pwrsw_intr, sc); 105 if (sc->sc_ih == NULL) { 106 aprint_error_dev(self, "unable to establish interrupt"); 107 panic("extintr_establish"); 108 } 109 110 if (sysmon_pswitch_register(&sc->sc_smpsw) != 0) { 111 aprint_error_dev(self, "unable to register with sysmon\n"); 112 return; 113 } 114 sc->sc_flags |= SYSMON_ATTACHED; 115 } 116 117 static int 118 pwrsw_intr(void *arg) 119 { 120 struct pwrsw_obio_softc *sc = arg; 121 int status; 122 123 status = (int8_t)_reg_read_1(LANDISK_BTNSTAT); 124 if (status == -1) { 125 return (0); 126 } 127 128 status = ~status; 129 if (status & BTN_POWER_BIT) { 130 if (sc->sc_flags & SYSMON_ATTACHED) { 131 sysmon_task_queue_sched(0, pwrsw_pressed_event, sc); 132 extintr_disable(sc->sc_ih); 133 #if NBTN_OBIO > 0 134 extintr_disable_by_num(LANDISK_INTR_BTN); 135 #endif 136 } else { 137 aprint_normal_dev(sc->sc_dev, "pressed\n"); 138 } 139 _reg_write_1(LANDISK_PWRSW_INTCLR, 1); 140 return (1); 141 } 142 return (0); 143 } 144 145 static void 146 pwrsw_pressed_event(void *arg) 147 { 148 struct pwrsw_obio_softc *sc = arg; 149 150 sysmon_pswitch_event(&sc->sc_smpsw, PSWITCH_EVENT_PRESSED); 151 } 152