sys/arch/landisk/dev/pwrsw_obio.c

   1 /*      $NetBSD: pwrsw_obio.c,v 1.1 2006/09/01 21:26:18 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 1.1 2006/09/01 21:26:18 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 }