sys/arch/hpcarm/dev/j720pcic.c

   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(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
 103         sacpcic_attach_common(device_private(parent),
 104             device_private(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 }