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j720pcic.c revision 1.4 
      1 /*      $NetBSD: j720pcic.c,v 1.4 2006/03/04 13:57:11 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 /* Jornada 720 PCMCIA support. */
     40 
     41 #include <sys/cdefs.h>
     42 __KERNEL_RCSID(0, "$NetBSD: j720pcic.c,v 1.4 2006/03/04 13:57:11 peter Exp $");
     43 
     44 #include <sys/param.h>
     45 #include <sys/systm.h>
     46 #include <sys/types.h>
     47 #include <sys/conf.h>
     48 #include <sys/file.h>
     49 #include <sys/device.h>
     50 #include <sys/kernel.h>
     51 #include <sys/kthread.h>
     52 #include <sys/malloc.h>
     53 
     54 #include <machine/bus.h>
     55 #include <machine/platid.h>
     56 #include <machine/platid_mask.h>
     57 
     58 #include <dev/pcmcia/pcmciachip.h>
     59 #include <dev/pcmcia/pcmciavar.h>
     60 
     61 #include <arm/sa11x0/sa11x0_reg.h>
     62 #include <arm/sa11x0/sa11x0_var.h>
     63 #include <arm/sa11x0/sa1111_reg.h>
     64 #include <arm/sa11x0/sa1111_var.h>
     65 #include <arm/sa11x0/sa11x1_pcicreg.h>
     66 #include <arm/sa11x0/sa11xx_pcicvar.h>
     67 #include <arm/sa11x0/sa11x1_pcicvar.h>
     68 
     69 #include "sacpcic.h"
     70 
     71 static int	sacpcic_match(struct device *, struct cfdata *, void *);
     72 static void	sacpcic_attach(struct device *, struct device *, void *);
     73 
     74 static void	j720_socket_setup(struct sapcic_socket *);
     75 static void	j720_set_power(struct sapcic_socket *, int);
     76 
     77 static struct sapcic_tag j720_sacpcic_functions = {
     78 	sacpcic_read,
     79 	sacpcic_write,
     80 	j720_set_power,
     81 	sacpcic_clear_intr,
     82 	sacpcic_intr_establish,
     83 	sacpcic_intr_disestablish
     84 };
     85 
     86 static int j720_power_capability[] = {
     87 	SAPCIC_POWER_5V | SAPCIC_POWER_3V, SAPCIC_POWER_3V
     88 };
     89 
     90 static struct platid_data sacpcic_platid_table[] = {
     91 	{ &platid_mask_MACH_HP_JORNADA_7XX, j720_power_capability },
     92 	{ NULL, NULL }
     93 };
     94 
     95 CFATTACH_DECL(sacpcic, sizeof(struct sacpcic_softc),
     96     sacpcic_match, sacpcic_attach, NULL, NULL);
     97 
     98 
     99 static int
    100 sacpcic_match(struct device *parent, struct cfdata *cf, void *aux)
    101 {
    102 
    103 	return 1;
    104 }
    105 
    106 static void
    107 sacpcic_attach(struct device *parent, struct device *self, void *aux)
    108 {
    109 
    110 	sacpcic_attach_common((struct sacc_softc *)parent,
    111 	    (struct sacpcic_softc *)self, aux, j720_socket_setup);
    112 }
    113 
    114 static void
    115 j720_socket_setup(struct sapcic_socket *sp)
    116 {
    117 	int *ip;
    118 	struct platid_data *p;
    119 	int socket = sp->socket;
    120 
    121 	p = platid_search_data(&platid, sacpcic_platid_table);
    122 
    123 	if (p == NULL) {
    124 		sp->power_capability = SAPCIC_POWER_5V;
    125 	} else {
    126 		ip = (int *)p->data;
    127 		sp->power_capability = ip[socket];
    128 	}
    129 
    130 	sp->pcictag = &j720_sacpcic_functions;
    131 }
    132 
    133 static void
    134 j720_set_power(struct sapcic_socket *so, int arg)
    135 {
    136 	int newval, oldval, s;
    137 	struct sacc_softc *sc = so->pcictag_cookie;
    138 
    139 	/* XXX this isn't well confirmed. DANGER DANGER */
    140 	switch (arg) {
    141 	case SAPCIC_POWER_OFF:
    142 		newval = 0;
    143 		break;
    144 	case SAPCIC_POWER_3V:
    145 		newval = 2;
    146 		break;
    147 	case SAPCIC_POWER_5V:
    148 		newval = 1;
    149 		break;
    150 	default:
    151 		panic("j720_set_power: bogus arg (%d)", arg);
    152 	}
    153 
    154 	s = splbio();
    155 	oldval = bus_space_read_4(sc->sc_iot, sc->sc_ioh, SACCGPIOA_DVR);
    156 
    157 	switch (so->socket) {
    158 	case 0:
    159 		newval = newval | (oldval & 0xc);
    160 		break;
    161 	case 1:
    162 		newval = (newval << 2) | (oldval & 3);
    163 		break;
    164 	default:
    165 		splx(s);
    166 		panic("j720_set_power: bogus socket (%d)", so->socket);
    167 	}
    168 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, SACCGPIOA_DVR, newval);
    169 	splx(s);
    170 }
    171