1/* $NetBSD: button.c,v 1.1 2018/04/09 20:07:22 christos Exp $ */ 2 3/*- 4 * Copyright (c) 2009 Michael Lorenz 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#include <sys/cdefs.h> 30__KERNEL_RCSID(0, "$NetBSD: button.c,v 1.1 2018/04/09 20:07:22 christos Exp $"); 31 32#include <sys/param.h> 33#include <sys/systm.h> 34#include <sys/kernel.h> 35#include <sys/device.h> 36#include <sys/proc.h> 37#include <sys/kthread.h> 38 39#include <sys/bus.h> 40 41#include <dev/sysmon/sysmonvar.h> 42#include <dev/sysmon/sysmon_taskq.h> 43 44#include <machine/autoconf.h> 45#include <machine/machtype.h> 46 47#include <sgimips/ioc/iocreg.h> 48#include <sgimips/hpc/hpcvar.h> 49#include <sgimips/hpc/hpcreg.h> 50 51struct button_softc { 52 device_t sc_dev; 53 struct sysmon_pswitch sc_pbutton; 54 bus_space_tag_t sc_tag; 55 bus_space_handle_t sc_hreg; 56 int sc_last, sc_fired; 57}; 58 59static int button_match(device_t, cfdata_t, void *); 60static void button_attach(device_t, device_t, void *); 61 62static int button_intr(void *); 63static void button_powerbutton(void *); 64 65CFATTACH_DECL_NEW(button, sizeof(struct button_softc), 66 button_match, 67 button_attach, 68 NULL, 69 NULL); 70 71static int 72button_match(device_t parent, cfdata_t match, void *aux) 73{ 74 struct hpc_attach_args *ha = aux; 75 76 if (strcmp(ha->ha_name, match->cf_name) != 0) 77 return 0; 78 79 if (mach_type == MACH_SGI_IP22) 80 return 1; 81 82 return 0; 83} 84 85static void 86button_attach(device_t parent, device_t self, void *aux) 87{ 88 struct button_softc *sc; 89 struct hpc_attach_args *haa; 90 91 sc = device_private(self); 92 sc->sc_dev = self; 93 haa = aux; 94 sc->sc_tag = haa->ha_st; 95 sc->sc_fired = 0; 96 97 aprint_normal("\n"); 98 if (bus_space_subregion(haa->ha_st, haa->ha_sh, haa->ha_devoff, 99 0x4, /* just a single register */ 100 &sc->sc_hreg)) { 101 aprint_error(": unable to map button register\n"); 102 return; 103 } 104 105 if ((cpu_intr_establish(haa->ha_irq, IPL_BIO, 106 button_intr, sc)) == NULL) { 107 printf(": unable to establish interrupt!\n"); 108 return; 109 } 110 111 sc->sc_last = 0; 112 113 sysmon_task_queue_init(); 114 memset(&sc->sc_pbutton, 0, sizeof(struct sysmon_pswitch)); 115 sc->sc_pbutton.smpsw_name = device_xname(sc->sc_dev); 116 sc->sc_pbutton.smpsw_type = PSWITCH_TYPE_POWER; 117 if (sysmon_pswitch_register(&sc->sc_pbutton) != 0) 118 aprint_error_dev(sc->sc_dev, 119 "unable to register power button with sysmon\n"); 120 pmf_device_register(self, NULL, NULL); 121} 122 123static int 124button_intr(void *cookie) 125{ 126 struct button_softc *sc = cookie; 127 uint8_t reg; 128 129 reg = bus_space_read_4(sc->sc_tag, sc->sc_hreg, 0); 130 bus_space_write_4(sc->sc_tag, sc->sc_hreg, 0, 131 IOC_PANEL_VDOWN_IRQ | IOC_PANEL_VUP_IRQ | IOC_PANEL_POWER_IRQ); 132 if ((reg & IOC_PANEL_POWER_IRQ) == 0) { 133 if (!sc->sc_fired) 134 sysmon_task_queue_sched(0, button_powerbutton, sc); 135 sc->sc_fired = 1; 136 } 137 if (time_second == sc->sc_last) 138 return 1; 139 sc->sc_last = time_second; 140 if ((reg & IOC_PANEL_VDOWN_HOLD) == 0) 141 pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_DOWN); 142 if ((reg & IOC_PANEL_VUP_HOLD) == 0) 143 pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_UP); 144 145 return 1; 146} 147 148static void 149button_powerbutton(void *cookie) 150{ 151 struct button_softc *sc = cookie; 152 153 sysmon_pswitch_event(&sc->sc_pbutton, PSWITCH_EVENT_PRESSED); 154} 155