sys/arch/evbarm/armadillo/armadillo9_pcic.c

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Copyright (c) 2005 HAMAJIMA Katsuomi. All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  */
  27
  28 #include <sys/cdefs.h>
  29 __KERNEL_RCSID(0, "$NetBSD$");
  30
  31 #include <sys/param.h>
  32 #include <sys/systm.h>
  33 #include <sys/kernel.h>
  34 #include <sys/device.h>
  35 #include <arm/ep93xx/epsocvar.h>
  36 #include <arm/ep93xx/epgpiovar.h>
  37 #include <arm/ep93xx/eppcicvar.h>
  38
  39 #ifdef A9PCIC_DEBUG
  40 int armadillo9pcic_debug = A9PCIC_DEBUG;
  41 #define DPRINTFN(n,x)   if (armadillo9pcic_debug>(n)) printf x;
  42 #else
  43 #define DPRINTFN(n,x)
  44 #endif
  45
  46 struct armadillo9pcic_softc {
  47         struct eppcic_softc     sc_dev;
  48 };
  49
  50 static int armadillo9pcic_match(struct device *, struct cfdata *, void *);
  51 static void armadillo9pcic_attach(struct device *, struct device *, void *);
  52
  53 CFATTACH_DECL(armadillo9pcic, sizeof(struct armadillo9pcic_softc),
  54               armadillo9pcic_match, armadillo9pcic_attach, NULL, NULL);
  55
  56 static int armadillo9pcic_card_mode(void *, int);
  57 static int armadillo9pcic_power_capability(void *, int);
  58 static int armadillo9pcic_power_ctl(void *, int, int);
  59
  60 struct eppcic_chipset_tag armadillo9pcic_tag = {
  61         armadillo9pcic_card_mode,
  62         armadillo9pcic_power_capability,
  63         armadillo9pcic_power_ctl
  64 };
  65
  66 static int
  67 armadillo9pcic_match(struct device *parent, struct cfdata *match, void *aux)
  68 {
  69         return 1;
  70 }
  71
  72 static void
  73 armadillo9pcic_attach(struct device *parent, struct device *self, void *aux)
  74 {
  75         struct epsoc_attach_args *sa = aux;
  76
  77         epgpio_out(sa->sa_gpio, PORT_A, 3);
  78         eppcic_attach_common(parent, self, aux, &armadillo9pcic_tag);
  79 }
  80
  81 static int
  82 armadillo9pcic_card_mode(void *self, int socket)
  83 {
  84         if (socket == 0)
  85                 return CF_MODE;
  86         else
  87                 return SLOT_DISABLE;
  88 }
  89
  90 static int
  91 armadillo9pcic_power_capability(void *self, int socket)
  92 {
  93         int vcc = 0;
  94
  95         if (socket == 0)
  96                 vcc |= VCC_3V;
  97         return vcc;
  98 }
  99
 100 static int
 101 armadillo9pcic_power_ctl(void *self, int socket, int onoff)
 102 {
 103         struct eppcic_softc *sc = (struct eppcic_softc *)self;
 104
 105         DPRINTFN(1, ("armadillo9pcic_power_ctl: %s\n",onoff?"on":"off"));
 106
 107         if (onoff)
 108                 epgpio_clear(sc->sc_gpio, PORT_A, 3);
 109         else
 110                 epgpio_set(sc->sc_gpio, PORT_A, 3);
 111         return (300 * 1000);
 112 }