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j720pcic.c revision 1.3 
      1 /*      $NetBSD: j720pcic.c,v 1.3 2006/03/04 13:56:17 peter Exp $        */
      2 
      3 /*-
      4  * Copyright (c) 2001 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by IWAMOTO Toshihiro.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include <sys/cdefs.h>
     40 __KERNEL_RCSID(0, "$NetBSD: j720pcic.c,v 1.3 2006/03/04 13:56:17 peter Exp $");
     41 
     42 #include <sys/param.h>
     43 #include <sys/systm.h>
     44 #include <sys/types.h>
     45 #include <sys/conf.h>
     46 #include <sys/file.h>
     47 #include <sys/device.h>
     48 #include <sys/kernel.h>
     49 #include <sys/kthread.h>
     50 #include <sys/malloc.h>
     51 
     52 #include <machine/bus.h>
     53 #include <machine/platid.h>
     54 #include <machine/platid_mask.h>
     55 
     56 #include <dev/pcmcia/pcmciachip.h>
     57 #include <dev/pcmcia/pcmciavar.h>
     58 #include <arm/sa11x0/sa11x0_reg.h>
     59 #include <arm/sa11x0/sa11x0_var.h>
     60 #include <arm/sa11x0/sa1111_reg.h>
     61 #include <arm/sa11x0/sa1111_var.h>
     62 #include <arm/sa11x0/sa11x1_pcicreg.h>
     63 #include <arm/sa11x0/sa11xx_pcicvar.h>
     64 #include <arm/sa11x0/sa11x1_pcicvar.h>
     65 
     66 #include "sacpcic.h"
     67 
     68 static	int	sacpcic_match(struct device *, struct cfdata *, void *);
     69 static	void	sacpcic_attach(struct device *, struct device *, void *);
     70 static	void	j720_set_power(struct sapcic_socket *so, int arg);
     71 
     72 static struct sapcic_tag j720_sacpcic_functions = {
     73 	sacpcic_read,
     74 	sacpcic_write,
     75 	j720_set_power,
     76 	sacpcic_clear_intr,
     77 	sacpcic_intr_establish,
     78 	sacpcic_intr_disestablish
     79 };
     80 
     81 static int j720_power_capability[] = {
     82 	SAPCIC_POWER_5V | SAPCIC_POWER_3V, SAPCIC_POWER_3V
     83 };
     84 
     85 static struct platid_data sacpcic_platid_table[] = {
     86 	{ &platid_mask_MACH_HP_JORNADA_7XX, j720_power_capability },
     87 	{ NULL, NULL }
     88 };
     89 
     90 CFATTACH_DECL(sacpcic, sizeof(struct sacpcic_softc),
     91     sacpcic_match, sacpcic_attach, NULL, NULL);
     92 
     93 static int
     94 sacpcic_match(struct device *parent, struct cfdata *cf, void *aux)
     95 {
     96 	return (1);
     97 }
     98 
     99 static void
    100 j720_socket_setup(struct sapcic_socket *sp)
    101 {
    102 	int *ip;
    103 	struct platid_data *p;
    104 	int socket = sp->socket;
    105 
    106 	p = platid_search_data(&platid, sacpcic_platid_table);
    107 
    108 	if (p == NULL) {
    109 		sp->power_capability = SAPCIC_POWER_5V;
    110 	} else {
    111 		ip = (int *)p->data;
    112 		sp->power_capability = ip[socket];
    113 	}
    114 
    115 	sp->pcictag = &j720_sacpcic_functions;
    116 }
    117 
    118 static void
    119 sacpcic_attach(struct device *parent, struct device *self, void *aux)
    120 {
    121 	sacpcic_attach_common((struct sacc_softc *)parent,
    122 	    (struct sacpcic_softc *)self, aux, j720_socket_setup);
    123 }
    124 
    125 static void
    126 j720_set_power(so, arg)
    127 	struct sapcic_socket *so;
    128 	int arg;
    129 {
    130 	int newval, oldval, s;
    131 	struct sacc_softc *sc = so->pcictag_cookie;
    132 
    133 	/* XXX this isn't well confirmed. DANGER DANGER */
    134 	switch (arg) {
    135 	case SAPCIC_POWER_OFF:
    136 		newval = 0;
    137 		break;
    138 	case SAPCIC_POWER_3V:
    139 		newval = 2;
    140 		break;
    141 	case SAPCIC_POWER_5V:
    142 		newval = 1;
    143 		break;
    144 	default:
    145 		panic("sacpcic_set_power: bogus arg");
    146 	}
    147 
    148 	s = splbio();
    149 	oldval = bus_space_read_4(sc->sc_iot, sc->sc_ioh,
    150 				  SACCGPIOA_DVR);
    151 	switch (so->socket) {
    152 	case 0:
    153 		newval = newval | (oldval & 0xc);
    154 		break;
    155 	case 1:
    156 		newval = (newval << 2) | (oldval & 3);
    157 		break;
    158 	default:
    159 		splx(s);
    160 		panic("sacpcic_set_power");
    161 	}
    162 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, SACCGPIOA_DVR, newval);
    163 	splx(s);
    164 }
    165 
    166