drivers/pcmcia/sa1100_system3.c

   1 /*
   2  * drivers/pcmcia/sa1100_system3.c
   3  *
   4  * PT Diagital Board PCMCIA specific routines
   5  *
   6  * Copyright (C) 2001 Stefan Eletzhofer <stefan.eletzhofer@eletztrick.de>
   7  *
   8  * $Id: sa1100_system3.c,v 1.1.4.2 2002/02/25 13:56:45 seletz Exp $
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  *
  14  * $Log: sa1100_system3.c,v $
  15  * Revision 1.1.4.2  2002/02/25 13:56:45  seletz
  16  * - more cleanups
  17  * - setup interrupts for CF card only ATM
  18  *
  19  * Revision 1.1.4.1  2002/02/14 02:23:27  seletz
  20  * - 2.5.2-rmk6 PCMCIA changes
  21  *
  22  * Revision 1.1.2.1  2002/02/13 23:49:33  seletz
  23  * - added from 2.4.16-rmk2
  24  * - cleanups
  25  *
  26  *
  27  */
  28 #include <linux/module.h>
  29 #include <linux/kernel.h>
  30 #include <linux/sched.h>
  31 #include <linux/init.h>
  32 #include <linux/device.h>
  33 #include <linux/ioport.h>
  34
  35 #include <asm/hardware.h>
  36 #include <asm/mach-types.h>
  37 #include <asm/irq.h>
  38 #include <asm/hardware/sa1111.h>
  39
  40 #include "sa1111_generic.h"
  41
  42 #define DEBUG 0
  43
  44 #ifdef DEBUG
  45 #       define DPRINTK( x, args... )    printk( "%s: line %d: "x, __FUNCTION__, __LINE__, ## args  );
  46 #else
  47 #       define DPRINTK( x, args... )    /* nix */
  48 #endif
  49
  50 static int system3_pcmcia_hw_init(struct sa1100_pcmcia_socket *skt)
  51 {
  52         skt->irq = skt->nr ? IRQ_S1_READY_NINT : IRQ_S0_READY_NINT;
  53
  54         /* Don't need no CD and BVD* interrupts */
  55         return 0;
  56 }
  57
  58 void system3_pcmcia_hw_shutdown(struct sa1100_pcmcia_socket *skt)
  59 {
  60 }
  61
  62 static void
  63 system3_pcmcia_socket_state(struct sa1100_pcmcia_socket *skt, struct pcmcia_state *state)
  64 {
  65         unsigned long status = PCSR;
  66
  67         switch (skt->nr) {
  68 #if 0 /* PCMCIA socket not yet connected */
  69         case 0:
  70                 state->detect = status & PCSR_S0_DETECT ? 0 : 1;
  71                 state->ready  = status & PCSR_S0_READY  ? 1 : 0;
  72                 state->bvd1   = status & PCSR_S0_BVD1   ? 1 : 0;
  73                 state->bvd2   = 1;
  74                 state->wrprot = status & PCSR_S0_WP     ? 1 : 0;
  75                 state->vs_3v  = 1;
  76                 state->vs_Xv  = 0;
  77                 break;
  78 #endif
  79
  80         case 1:
  81                 state->detect = status & PCSR_S1_DETECT ? 0 : 1;
  82                 state->ready  = status & PCSR_S1_READY  ? 1 : 0;
  83                 state->bvd1   = status & PCSR_S1_BVD1   ? 1 : 0;
  84                 state->bvd2   = 1;
  85                 state->wrprot = status & PCSR_S1_WP     ? 1 : 0;
  86                 state->vs_3v  = 1;
  87                 state->vs_Xv  = 0;
  88                 break;
  89         }
  90
  91         DPRINTK("Sock %d PCSR=0x%08lx, Sx_RDY_nIREQ=%d\n",
  92                 skt->nr, status, state->ready);
  93 }
  94
  95 struct pcmcia_low_level system3_pcmcia_ops = {
  96         .owner                  = THIS_MODULE,
  97         .init                   = system3_pcmcia_hw_init,
  98         .shutdown               = system3_pcmcia_hw_shutdown,
  99         .socket_state           = system3_pcmcia_socket_state,
 100         .configure_socket       = sa1111_pcmcia_configure_socket,
 101
 102         .socket_init            = sa1111_pcmcia_socket_init,
 103         .socket_suspend         = sa1111_pcmcia_socket_suspend,
 104 };
 105
 106 int __init pcmcia_system3_init(struct device *dev)
 107 {
 108         int ret = -ENODEV;
 109
 110         if (machine_is_pt_system3())
 111                 /* only CF ATM */
 112                 ret = sa11xx_drv_pcmcia_probe(dev, &system3_pcmcia_ops, 1, 1);
 113
 114         return ret;
 115 }