1 /* $NetBSD: btn_obio.c,v 1.5 2008/03/27 03:01:05 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 "pwrsw_obio.h" 30 31 #include <sys/cdefs.h> 32 __KERNEL_RCSID(0, "$NetBSD: btn_obio.c,v 1.5 2008/03/27 03:01:05 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/kernel.h> 40 #include <sys/conf.h> 41 #include <sys/ioctl.h> 42 #include <sys/callout.h> 43 44 #include <dev/sysmon/sysmonvar.h> 45 #include <dev/sysmon/sysmon_taskq.h> 46 47 #include <sh3/devreg.h> 48 49 #include <machine/button.h> 50 51 #include <landisk/landisk/landiskreg.h> 52 #include <landisk/dev/obiovar.h> 53 #include <landisk/dev/buttonvar.h> 54 55 #define BTN_SELECT 0 56 #define BTN_COPY 1 57 #define BTN_REMOVE 2 58 #define NBUTTON 3 59 60 struct btn_obio_softc { 61 device_t sc_dev; 62 void *sc_ih; 63 64 struct callout sc_guard_ch; 65 struct sysmon_pswitch sc_smpsw; /* reset */ 66 struct btn_event sc_bev[NBUTTON]; 67 68 int sc_mask; 69 }; 70 71 #ifndef BTN_TIMEOUT 72 #define BTN_TIMEOUT (hz / 10) /* 100ms */ 73 #endif 74 75 static int btn_obio_probe(device_t, cfdata_t, void *); 76 static void btn_obio_attach(device_t, device_t, void *); 77 78 static int btn_intr(void *aux); 79 static void btn_sysmon_pressed_event(void *arg); 80 static void btn_pressed_event(void *arg); 81 static void btn_guard_timeout(void *arg); 82 83 static struct btn_obio_softc *btn_softc; 84 85 static const struct { 86 int idx; 87 int mask; 88 const char *name; 89 } btnlist[NBUTTON] = { 90 { BTN_SELECT, BTN_SELECT_BIT, "select" }, 91 { BTN_COPY, BTN_COPY_BIT, "copy" }, 92 { BTN_REMOVE, BTN_REMOVE_BIT, "remove" }, 93 }; 94 95 CFATTACH_DECL_NEW(btn_obio, sizeof(struct btn_obio_softc), 96 btn_obio_probe, btn_obio_attach, NULL, NULL); 97 98 static int 99 btn_obio_probe(device_t parent, cfdata_t cfp, void *aux) 100 { 101 struct obio_attach_args *oa = aux; 102 103 if (btn_softc) 104 return (0); 105 106 oa->oa_nio = 0; 107 oa->oa_niomem = 0; 108 oa->oa_nirq = 1; 109 oa->oa_irq[0].or_irq = LANDISK_INTR_BTN; 110 111 return (1); 112 } 113 114 static void 115 btn_obio_attach(device_t parent, device_t self, void *aux) 116 { 117 struct btn_obio_softc *sc; 118 int i; 119 120 aprint_naive("\n"); 121 aprint_normal(": USL-5P buttons\n"); 122 123 sc = device_private(self); 124 sc->sc_dev = self; 125 126 btn_softc = sc; 127 128 callout_init(&sc->sc_guard_ch, 0); 129 callout_setfunc(&sc->sc_guard_ch, btn_guard_timeout, sc); 130 131 sc->sc_ih = extintr_establish(LANDISK_INTR_BTN, IPL_TTY, btn_intr, sc); 132 if (sc->sc_ih == NULL) { 133 aprint_error_dev(self, "unable to establish interrupt"); 134 panic("extintr_establish"); 135 } 136 137 sc->sc_smpsw.smpsw_name = device_xname(self); 138 sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_RESET; 139 if (sysmon_pswitch_register(&sc->sc_smpsw) != 0) { 140 aprint_error_dev(self, "unable to register with sysmon\n"); 141 return; 142 } 143 sc->sc_mask |= BTN_RESET_BIT; 144 145 for (i = 0; i < NBUTTON; i++) { 146 int idx = btnlist[i].idx; 147 sc->sc_bev[idx].bev_name = btnlist[i].name; 148 if (btn_event_register(&sc->sc_bev[idx]) != 0) { 149 aprint_error_dev(self, 150 "unable to register '%s' button\n", 151 btnlist[i].name); 152 } else { 153 sc->sc_mask |= btnlist[i].mask; 154 } 155 } 156 } 157 158 static int 159 btn_intr(void *arg) 160 { 161 struct btn_obio_softc *sc = (void *)arg; 162 device_t self = sc->sc_dev; 163 int status; 164 int i; 165 166 status = (int8_t)_reg_read_1(LANDISK_BTNSTAT); 167 if (status == -1) { 168 return (0); 169 } 170 171 status = ~status; 172 if (status & BTN_ALL_BIT) { 173 if (status & BTN_RESET_BIT) { 174 if (sc->sc_mask & BTN_RESET_BIT) { 175 extintr_disable(sc->sc_ih); 176 #if NPWRSW_OBIO > 0 177 extintr_disable_by_num(LANDISK_INTR_PWRSW); 178 #endif 179 sysmon_task_queue_sched(0, 180 btn_sysmon_pressed_event, sc); 181 return (1); 182 } else { 183 aprint_normal_dev(self, 184 "reset button pressed\n"); 185 } 186 } 187 188 for (i = 0; i < NBUTTON; i++) { 189 uint8_t mask = btnlist[i].mask; 190 int rv = 0; 191 if (status & mask) { 192 if (sc->sc_mask & mask) { 193 sysmon_task_queue_sched(1, 194 btn_pressed_event, 195 &sc->sc_bev[btnlist[i].idx]); 196 } else { 197 aprint_normal_dev(self, 198 "%s button pressed\n", 199 btnlist[i].name); 200 } 201 rv = 1; 202 } 203 if (rv != 0) { 204 extintr_disable(sc->sc_ih); 205 callout_schedule(&sc->sc_guard_ch, BTN_TIMEOUT); 206 } 207 } 208 return (1); 209 } 210 return (0); 211 } 212 213 static void 214 btn_sysmon_pressed_event(void *arg) 215 { 216 struct btn_obio_softc *sc = (void *)arg; 217 218 sysmon_pswitch_event(&sc->sc_smpsw, PSWITCH_EVENT_PRESSED); 219 } 220 221 static void 222 btn_pressed_event(void *arg) 223 { 224 struct btn_event *bev = (void *)arg; 225 226 btn_event_send(bev, BUTTON_EVENT_PRESSED); 227 } 228 229 static void 230 btn_guard_timeout(void *arg) 231 { 232 struct btn_obio_softc *sc = arg; 233 234 callout_stop(&sc->sc_guard_ch); 235 extintr_enable(sc->sc_ih); 236 } 237