1 /* $NetBSD: nbppm.c,v 1.1 2011/08/06 03:53:40 kiyohara Exp $ */ 2 /* 3 * Copyright (c) 2011 KIYOHARA Takashi 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 19 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 23 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 24 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 * POSSIBILITY OF SUCH DAMAGE. 26 */ 27 #include <sys/cdefs.h> 28 __KERNEL_RCSID(0, "$NetBSD: nbppm.c,v 1.1 2011/08/06 03:53:40 kiyohara Exp $"); 29 30 #include <sys/param.h> 31 #include <sys/device.h> 32 #include <sys/errno.h> 33 34 #include <machine/config_hook.h> 35 36 #include <arm/xscale/pxa2x0_gpio.h> 37 38 #include <hpcarm/dev/nbppconvar.h> 39 40 #include "locators.h" 41 42 struct nbppm_softc { 43 device_t sc_dev; 44 device_t sc_parent; 45 int sc_tag; 46 }; 47 48 static int nbppm_match(device_t, cfdata_t, void *); 49 static void nbppm_attach(device_t, device_t, void *); 50 51 static int nbppm_critical_intr(void *); 52 static int nbppm_suspend_intr(void *); 53 54 CFATTACH_DECL_NEW(nbppm, sizeof(struct nbppm_softc), 55 nbppm_match, nbppm_attach, NULL, NULL); 56 57 58 /* ARGSUSED */ 59 static int 60 nbppm_match(device_t parent, cfdata_t match, void *aux) 61 { 62 struct nbppcon_attach_args *pcon = aux; 63 64 if (strcmp(pcon->aa_name, match->cf_name) || 65 pcon->aa_tag == NBPPCONCF_TAG_DEFAULT) 66 return 0; 67 68 return 1; 69 } 70 71 static void 72 nbppm_attach(device_t parent, device_t self, void *aux) 73 { 74 struct nbppm_softc *sc = device_private(self); 75 struct nbppcon_attach_args *pcon = aux; 76 77 aprint_naive("\n"); 78 aprint_normal("\n"); 79 80 sc->sc_dev = self; 81 sc->sc_parent = parent; 82 sc->sc_tag = pcon->aa_tag; 83 84 /* GPIO 0 is Critical Suspend */ 85 pxa2x0_gpio_set_function(0, GPIO_IN); 86 if (pxa2x0_gpio_intr_establish(0, IST_EDGE_RISING, IPL_HIGH, 87 nbppm_critical_intr, sc) == NULL) 88 aprint_error_dev(self, 89 "unable to establish critical interrupt\n"); 90 91 /* GPIO 1 is Suspend */ 92 pxa2x0_gpio_set_function(1, GPIO_IN); 93 if (pxa2x0_gpio_intr_establish(1, IST_EDGE_BOTH, IPL_HIGH, 94 nbppm_suspend_intr, sc) == NULL) 95 aprint_error_dev(self, 96 "unable to establish suspend interrupt\n"); 97 98 return; 99 } 100 101 static int 102 nbppm_critical_intr(void *arg) 103 { 104 struct nbppm_softc *sc = arg; 105 106 aprint_normal_dev(sc->sc_dev, "Battery Low\n"); 107 return 0; 108 } 109 110 static int 111 nbppm_suspend_intr(void *arg) 112 { 113 struct nbppm_softc *sc = arg; 114 115 aprint_verbose_dev(sc->sc_dev, "lid closed\n"); 116 117 return 0; 118 } 119