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      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