sys/arch/evbarm/lubbock/lubbock_pcic.c

   1 /*      $NetBSD: lubbock_pcic.c,v 1.4 2008/04/28 20:23:17 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 #include <sys/cdefs.h>
  33 __KERNEL_RCSID(0, "$NetBSD: lubbock_pcic.c,v 1.4 2008/04/28 20:23:17 martin Exp $");
  34
  35 #include <sys/param.h>
  36 #include <sys/systm.h>
  37 #include <sys/types.h>
  38 #include <sys/conf.h>
  39 #include <sys/file.h>
  40 #include <sys/device.h>
  41 #include <sys/kernel.h>
  42 #include <sys/kthread.h>
  43 #include <sys/malloc.h>
  44
  45 #include <machine/bus.h>
  46
  47 #include <dev/pcmcia/pcmciachip.h>
  48 #include <dev/pcmcia/pcmciavar.h>
  49 #include <arm/sa11x0/sa11x0_reg.h>
  50 #include <arm/sa11x0/sa11x0_var.h>
  51 #include <arm/sa11x0/sa1111_reg.h>
  52 #include <arm/sa11x0/sa1111_var.h>
  53 #include <arm/sa11x0/sa11x1_pcicreg.h>
  54 #include <arm/sa11x0/sa11xx_pcicvar.h>
  55 #include <arm/sa11x0/sa11x1_pcicvar.h>
  56
  57 #include <evbarm/lubbock/lubbock_reg.h>
  58 #include <evbarm/lubbock/lubbock_var.h>
  59
  60 static  int     sacpcic_match(device_t, cfdata_t, void *);
  61 static  void    sacpcic_attach(device_t, device_t, void *);
  62 static  void    lubbock_set_power(struct sapcic_socket *so, int arg);
  63 static  void    lubbock_socket_setup(struct sapcic_socket *sp);
  64
  65 static struct sapcic_tag lubbock_sacpcic_functions = {
  66         sacpcic_read,
  67         sacpcic_write,
  68         lubbock_set_power,
  69         sacpcic_clear_intr,
  70         sacpcic_intr_establish,
  71         sacpcic_intr_disestablish
  72 };
  73
  74 CFATTACH_DECL_NEW(sacpcic, sizeof(struct sacpcic_softc),
  75     sacpcic_match, sacpcic_attach, NULL, NULL);
  76
  77 static int
  78 sacpcic_match(device_t parent, cfdata_t cf, void *aux)
  79 {
  80         return (1);
  81 }
  82
  83 static void
  84 lubbock_socket_setup(struct sapcic_socket *sp)
  85 {
  86         sp->power_capability = SAPCIC_POWER_5V | SAPCIC_POWER_3V;
  87         sp->pcictag = &lubbock_sacpcic_functions;
  88 }
  89
  90 static void
  91 sacpcic_attach(device_t parent, device_t self, void *aux)
  92 {
  93         sacpcic_attach_common(device_private(parent),
  94             device_private(self), aux, lubbock_socket_setup);
  95 }
  96
  97
  98 static void
  99 lubbock_set_power(struct sapcic_socket *so, int arg)
 100 {
 101         struct sacc_softc *sc = so->pcictag_cookie;
 102         struct obio_softc *bsc = device_private(device_parent(sc->sc_dev));
 103         int s;
 104         uint16_t tmp;
 105
 106         static const uint8_t vval_socket0[] = {
 107                 /* for socket0 (pcmcia) */
 108                 0x00,           /* OFF */
 109                 0x08,           /* 3.3V */
 110                 0x05,           /* 5V */
 111         };
 112         static const uint16_t vval_socket1[] = {
 113                 /* for socket1 (CF) */
 114                 0x0000,         /* OFF */
 115                 0x8000,         /* 3.3V */
 116                 0x4000,         /* 5V */
 117         };
 118
 119         if( arg < 0 || SAPCIC_POWER_5V < arg )
 120                 panic("sacpcic_set_power: bogus arg\n");
 121
 122         switch( so->socket ){
 123         case 0:
 124                 bus_space_write_4(sc->sc_iot, sc->sc_ioh, SACCGPIOA_DVR,
 125                                   vval_socket0[arg]);
 126                 break;
 127         case 1:
 128                 s = splhigh();
 129                 tmp = bus_space_read_2(bsc->sc_iot, bsc->sc_obioreg_ioh,
 130                     LUBBOCK_MISCWR);
 131                 bus_space_write_2(bsc->sc_iot, bsc->sc_obioreg_ioh,
 132                     LUBBOCK_MISCWR, (tmp & 0x3fff) | vval_socket1[arg] );
 133                 splx(s);
 134                 break;
 135         default:
 136                 aprint_normal("unknown socket number: %d\n", so->socket);
 137         }
 138 }