1 /* $NetBSD: btn_obio.c,v 1.7 2021/07/15 05:07:50 rin 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 "pwrsw_obio.h" 29 30 #include <sys/cdefs.h> 31 __KERNEL_RCSID(0, "$NetBSD: btn_obio.c,v 1.7 2021/07/15 05:07:50 rin 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/kernel.h> 39 #include <sys/conf.h> 40 #include <sys/ioctl.h> 41 #include <sys/callout.h> 42 43 #include <dev/sysmon/sysmonvar.h> 44 #include <dev/sysmon/sysmon_taskq.h> 45 46 #include <sh3/devreg.h> 47 48 #include <machine/button.h> 49 50 #include <landisk/landisk/landiskreg.h> 51 #include <landisk/dev/obiovar.h> 52 #include <landisk/dev/buttonvar.h> 53 54 #define BTN_SELECT 0 55 #define BTN_COPY 1 56 #define BTN_REMOVE 2 57 #define NBUTTON 3 58 59 struct btn_obio_softc { 60 device_t sc_dev; 61 void *sc_ih; 62 63 struct callout sc_guard_ch; 64 struct sysmon_pswitch sc_smpsw; /* reset */ 65 struct btn_event sc_bev[NBUTTON]; 66 67 int sc_mask; 68 }; 69 70 #ifndef BTN_TIMEOUT 71 #define BTN_TIMEOUT (hz / 10) /* 100ms */ 72 #endif 73 74 static int btn_obio_probe(device_t, cfdata_t, void *); 75 static void btn_obio_attach(device_t, device_t, void *); 76 77 static int btn_intr(void *aux); 78 static void btn_sysmon_pressed_event(void *arg); 79 static void btn_pressed_event(void *arg); 80 static void btn_guard_timeout(void *arg); 81 82 static struct btn_obio_softc *btn_softc; 83 84 static const struct { 85 int idx; 86 int mask; 87 const char *name; 88 } btnlist[NBUTTON] = { 89 { BTN_SELECT, BTN_SELECT_BIT, "select" }, 90 { BTN_COPY, BTN_COPY_BIT, "copy" }, 91 { BTN_REMOVE, BTN_REMOVE_BIT, "remove" }, 92 }; 93 94 CFATTACH_DECL_NEW(btn_obio, sizeof(struct btn_obio_softc), 95 btn_obio_probe, btn_obio_attach, NULL, NULL); 96 97 static int 98 btn_obio_probe(device_t parent, cfdata_t cfp, void *aux) 99 { 100 struct obio_attach_args *oa = aux; 101 102 if (btn_softc) 103 return (0); 104 105 oa->oa_nio = 0; 106 oa->oa_niomem = 0; 107 oa->oa_nirq = 1; 108 oa->oa_irq[0].or_irq = LANDISK_INTR_BTN; 109 110 return (1); 111 } 112 113 static void 114 btn_obio_attach(device_t parent, device_t self, void *aux) 115 { 116 struct btn_obio_softc *sc; 117 int i; 118 119 aprint_naive("\n"); 120 aprint_normal(": USL-5P buttons\n"); 121 122 sc = device_private(self); 123 sc->sc_dev = self; 124 125 btn_softc = sc; 126 127 callout_init(&sc->sc_guard_ch, 0); 128 callout_setfunc(&sc->sc_guard_ch, btn_guard_timeout, sc); 129 130 sc->sc_ih = extintr_establish(LANDISK_INTR_BTN, IPL_TTY, btn_intr, sc); 131 if (sc->sc_ih == NULL) { 132 aprint_error_dev(self, "unable to establish interrupt"); 133 panic("extintr_establish"); 134 } 135 136 sc->sc_smpsw.smpsw_name = device_xname(self); 137 sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_RESET; 138 if (sysmon_pswitch_register(&sc->sc_smpsw) != 0) { 139 aprint_error_dev(self, "unable to register with sysmon\n"); 140 return; 141 } 142 sc->sc_mask |= BTN_RESET_BIT; 143 144 btn_init(); 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