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j720pcic.c revision 1.5 
      1 /*      $NetBSD: j720pcic.c,v 1.5 2008/04/28 20:23:21 martin 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  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 /* Jornada 720 PCMCIA support. */
     33 
     34 #include <sys/cdefs.h>
     35 __KERNEL_RCSID(0, "$NetBSD: j720pcic.c,v 1.5 2008/04/28 20:23:21 martin Exp $");
     36 
     37 #include <sys/param.h>
     38 #include <sys/systm.h>
     39 #include <sys/types.h>
     40 #include <sys/conf.h>
     41 #include <sys/file.h>
     42 #include <sys/device.h>
     43 #include <sys/kernel.h>
     44 #include <sys/kthread.h>
     45 #include <sys/malloc.h>
     46 
     47 #include <machine/bus.h>
     48 #include <machine/platid.h>
     49 #include <machine/platid_mask.h>
     50 
     51 #include <dev/pcmcia/pcmciachip.h>
     52 #include <dev/pcmcia/pcmciavar.h>
     53 
     54 #include <arm/sa11x0/sa11x0_reg.h>
     55 #include <arm/sa11x0/sa11x0_var.h>
     56 #include <arm/sa11x0/sa1111_reg.h>
     57 #include <arm/sa11x0/sa1111_var.h>
     58 #include <arm/sa11x0/sa11x1_pcicreg.h>
     59 #include <arm/sa11x0/sa11xx_pcicvar.h>
     60 #include <arm/sa11x0/sa11x1_pcicvar.h>
     61 
     62 #include "sacpcic.h"
     63 
     64 static int	sacpcic_match(struct device *, struct cfdata *, void *);
     65 static void	sacpcic_attach(struct device *, struct device *, void *);
     66 
     67 static void	j720_socket_setup(struct sapcic_socket *);
     68 static void	j720_set_power(struct sapcic_socket *, int);
     69 
     70 static struct sapcic_tag j720_sacpcic_functions = {
     71 	sacpcic_read,
     72 	sacpcic_write,
     73 	j720_set_power,
     74 	sacpcic_clear_intr,
     75 	sacpcic_intr_establish,
     76 	sacpcic_intr_disestablish
     77 };
     78 
     79 static int j720_power_capability[] = {
     80 	SAPCIC_POWER_5V | SAPCIC_POWER_3V, SAPCIC_POWER_3V
     81 };
     82 
     83 static struct platid_data sacpcic_platid_table[] = {
     84 	{ &platid_mask_MACH_HP_JORNADA_7XX, j720_power_capability },
     85 	{ NULL, NULL }
     86 };
     87 
     88 CFATTACH_DECL(sacpcic, sizeof(struct sacpcic_softc),
     89     sacpcic_match, sacpcic_attach, NULL, NULL);
     90 
     91 
     92 static int
     93 sacpcic_match(struct device *parent, struct cfdata *cf, void *aux)
     94 {
     95 
     96 	return 1;
     97 }
     98 
     99 static void
    100 sacpcic_attach(struct device *parent, struct device *self, void *aux)
    101 {
    102 
    103 	sacpcic_attach_common((struct sacc_softc *)parent,
    104 	    (struct sacpcic_softc *)self, aux, j720_socket_setup);
    105 }
    106 
    107 static void
    108 j720_socket_setup(struct sapcic_socket *sp)
    109 {
    110 	int *ip;
    111 	struct platid_data *p;
    112 	int socket = sp->socket;
    113 
    114 	p = platid_search_data(&platid, sacpcic_platid_table);
    115 
    116 	if (p == NULL) {
    117 		sp->power_capability = SAPCIC_POWER_5V;
    118 	} else {
    119 		ip = (int *)p->data;
    120 		sp->power_capability = ip[socket];
    121 	}
    122 
    123 	sp->pcictag = &j720_sacpcic_functions;
    124 }
    125 
    126 static void
    127 j720_set_power(struct sapcic_socket *so, int arg)
    128 {
    129 	int newval, oldval, s;
    130 	struct sacc_softc *sc = so->pcictag_cookie;
    131 
    132 	/* XXX this isn't well confirmed. DANGER DANGER */
    133 	switch (arg) {
    134 	case SAPCIC_POWER_OFF:
    135 		newval = 0;
    136 		break;
    137 	case SAPCIC_POWER_3V:
    138 		newval = 2;
    139 		break;
    140 	case SAPCIC_POWER_5V:
    141 		newval = 1;
    142 		break;
    143 	default:
    144 		panic("j720_set_power: bogus arg (%d)", arg);
    145 	}
    146 
    147 	s = splbio();
    148 	oldval = bus_space_read_4(sc->sc_iot, sc->sc_ioh, SACCGPIOA_DVR);
    149 
    150 	switch (so->socket) {
    151 	case 0:
    152 		newval = newval | (oldval & 0xc);
    153 		break;
    154 	case 1:
    155 		newval = (newval << 2) | (oldval & 3);
    156 		break;
    157 	default:
    158 		splx(s);
    159 		panic("j720_set_power: bogus socket (%d)", so->socket);
    160 	}
    161 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, SACCGPIOA_DVR, newval);
    162 	splx(s);
    163 }
    164