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j720pcic.c revision 1.8 
      1 /*      $NetBSD: j720pcic.c,v 1.8 2011/07/19 15:37:38 dyoung 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 1.8 2011/07/19 15:37:38 dyoung 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 #include <sys/bus.h>
     47 
     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(device_t, cfdata_t, void *);
     65 static void	sacpcic_attach(device_t, device_t, 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_NEW(sacpcic, sizeof(struct sacpcic_softc),
     89     sacpcic_match, sacpcic_attach, NULL, NULL);
     90 
     91 
     92 static int
     93 sacpcic_match(device_t parent, cfdata_t cf, void *aux)
     94 {
     95 
     96 	return 1;
     97 }
     98 
     99 static void
    100 sacpcic_attach(device_t parent, device_t self, void *aux)
    101 {
    102 	struct sacc_softc *psc;
    103 	struct sacpcic_softc *sc;
    104 
    105 	psc = device_private(parent);
    106 	sc = device_private(self);
    107 	sc->sc_pc.sc_dev = self;
    108 
    109 	sacpcic_attach_common(psc, sc, aux, j720_socket_setup);
    110 }
    111 
    112 static void
    113 j720_socket_setup(struct sapcic_socket *sp)
    114 {
    115 	int *ip;
    116 	struct platid_data *p;
    117 	int socket = sp->socket;
    118 
    119 	p = platid_search_data(&platid, sacpcic_platid_table);
    120 
    121 	if (p == NULL) {
    122 		sp->power_capability = SAPCIC_POWER_5V;
    123 	} else {
    124 		ip = (int *)p->data;
    125 		sp->power_capability = ip[socket];
    126 	}
    127 
    128 	sp->pcictag = &j720_sacpcic_functions;
    129 }
    130 
    131 static void
    132 j720_set_power(struct sapcic_socket *so, int arg)
    133 {
    134 	int newval, oldval, s;
    135 	struct sacc_softc *sc = so->pcictag_cookie;
    136 
    137 	/* XXX this isn't well confirmed. DANGER DANGER */
    138 	switch (arg) {
    139 	case SAPCIC_POWER_OFF:
    140 		newval = 0;
    141 		break;
    142 	case SAPCIC_POWER_3V:
    143 		newval = 2;
    144 		break;
    145 	case SAPCIC_POWER_5V:
    146 		newval = 1;
    147 		break;
    148 	default:
    149 		panic("j720_set_power: bogus arg (%d)", arg);
    150 	}
    151 
    152 	s = splbio();
    153 	oldval = bus_space_read_4(sc->sc_iot, sc->sc_ioh, SACCGPIOA_DVR);
    154 
    155 	switch (so->socket) {
    156 	case 0:
    157 		newval = newval | (oldval & 0xc);
    158 		break;
    159 	case 1:
    160 		newval = (newval << 2) | (oldval & 3);
    161 		break;
    162 	default:
    163 		splx(s);
    164 		panic("j720_set_power: bogus socket (%d)", so->socket);
    165 	}
    166 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, SACCGPIOA_DVR, newval);
    167 	splx(s);
    168 }
    169