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/*

 * drivers/pcmcia/sa1100_simpad.c

 *

 * PCMCIA implementation routines for simpad

 *

 */

#include <linux/kernel.h>

#include <linux/sched.h>

#include <asm/hardware.h>

#include <asm/irq.h>

#include "sa1100_generic.h"

extern long get_cs3_shadow(void);

extern void set_cs3_bit(int value);

extern void clear_cs3_bit(int value);

static int simpad_pcmcia_init(struct pcmcia_init *init){

  int irq, res;

  set_cs3_bit(PCMCIA_RESET);

  clear_cs3_bit(PCMCIA_BUFF_DIS);

  clear_cs3_bit(PCMCIA_RESET);

  clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);

  /* Set transition detect */

  set_GPIO_IRQ_edge( GPIO_CF_CD, GPIO_NO_EDGES );

  set_GPIO_IRQ_edge( GPIO_CF_IRQ, GPIO_FALLING_EDGE );

  /* Register interrupts */

  irq = IRQ_GPIO_CF_CD;

  res = request_irq( irq, init->handler, SA_INTERRUPT, "CF_CD", NULL );

  if( res < 0 ) goto irq_err;

  /* There's only one slot, but it's "Slot 1": */

  return 2;

irq_err:

  printk( KERN_ERR "%s: Request for IRQ %lu failed\n", __FUNCTION__, irq );

  return -1;

}

static int simpad_pcmcia_shutdown(void)

{

  /* disable IRQs */

  free_irq( IRQ_GPIO_CF_CD, NULL );

  /* Disable CF bus: */

  //set_cs3_bit(PCMCIA_BUFF_DIS);

  clear_cs3_bit(PCMCIA_RESET);

  return 0;

}

static int simpad_pcmcia_socket_state(struct pcmcia_state_array

                                       *state_array)

{

  unsigned long levels;

  unsigned long *cs3reg = CS3_BASE;

  if(state_array->size<2) return -1;

  memset(state_array->state, 0,

         (state_array->size)*sizeof(struct pcmcia_state));

  levels=GPLR;

  state_array->state[1].detect=((levels & GPIO_CF_CD)==0)?1:0;

  state_array->state[1].ready=(levels & GPIO_CF_IRQ)?1:0;

  state_array->state[1].bvd1=1; /* Not available on Simpad. */

  state_array->state[1].bvd2=1; /* Not available on Simpad. */

  state_array->state[1].wrprot=0; /* Not available on Simpad. */

  if((*cs3reg & 0x0c) == 0x0c) {

    state_array->state[1].vs_3v=0;

    state_array->state[1].vs_Xv=0;

  } else

  {

    state_array->state[1].vs_3v=1;

    state_array->state[1].vs_Xv=0;

  }

  return 1;

}

static int simpad_pcmcia_get_irq_info(struct pcmcia_irq_info *info){

  if(info->sock>1) return -1;

  if(info->sock==1)

    info->irq=IRQ_GPIO_CF_IRQ;

  return 0;

}

static int simpad_pcmcia_configure_socket(const struct pcmcia_configure

                                           *configure)

{

  unsigned long value, flags;

  if(configure->sock>1) return -1;

  if(configure->sock==0) return 0;

  save_flags_cli(flags);

  /* Murphy: see table of MIC2562a-1 */

  switch(configure->vcc){

  case 0:

    clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);

    break;

  case 33:

    clear_cs3_bit(VCC_3V_EN|EN0);

    set_cs3_bit(VCC_5V_EN|EN1);

    break;

  case 50:

    clear_cs3_bit(VCC_5V_EN|EN1);

    set_cs3_bit(VCC_3V_EN|EN0);

    break;

  default:

    printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__,

           configure->vcc);

    clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);

    restore_flags(flags);

    return -1;

  }

  /* Silently ignore Vpp, output enable, speaker enable. */

  restore_flags(flags);

  return 0;

}

static int simpad_pcmcia_socket_init(int sock)

{

  set_GPIO_IRQ_edge(GPIO_CF_CD, GPIO_BOTH_EDGES);

  return 0;

}

static int simpad_pcmcia_socket_suspend(int sock)

{

  set_GPIO_IRQ_edge(GPIO_CF_CD, GPIO_NO_EDGES);

  return 0;

}

struct pcmcia_low_level simpad_pcmcia_ops = {

  init:                 simpad_pcmcia_init,

  shutdown:             simpad_pcmcia_shutdown,

  socket_state:         simpad_pcmcia_socket_state,

  get_irq_info:         simpad_pcmcia_get_irq_info,

  configure_socket:     simpad_pcmcia_configure_socket,

  socket_init:          simpad_pcmcia_socket_init,

  socket_suspend:       simpad_pcmcia_socket_suspend,

};