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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [pcmcia/] [sa1100_pangolin.c] - Blame information for rev 1765

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Line No. Rev Author Line
1 1275 phoenix 
/*
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 * drivers/pcmcia/sa1100_pangolin.c
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 *
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 * PCMCIA implementation routines for Pangolin
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 *
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 */
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <asm/hardware.h>
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#include <asm/irq.h>
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#include "sa1100_generic.h"
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static int pangolin_pcmcia_init(struct pcmcia_init *init){
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  int irq, res;
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#ifndef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
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  /* Enable PCMCIA bus: */
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  GPCR = GPIO_PCMCIA_BUS_ON;
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#endif
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  /* Set transition detect */
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  set_GPIO_IRQ_edge( GPIO_PCMCIA_CD, GPIO_BOTH_EDGES );
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  set_GPIO_IRQ_edge( GPIO_PCMCIA_IRQ, GPIO_FALLING_EDGE );
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  /* Register interrupts */
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  irq = IRQ_PCMCIA_CD;
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  res = request_irq( irq, init->handler, SA_INTERRUPT, "PCMCIA_CD", NULL );
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  if( res < 0 ) goto irq_err;
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  /* There's only one slot, but it's "Slot 1": */
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  return 2;
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irq_err:
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  printk( KERN_ERR "%s: Request for IRQ %lu failed\n", __FUNCTION__, irq );
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  return -1;
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}
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static int pangolin_pcmcia_shutdown(void)
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{
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  /* disable IRQs */
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  free_irq( IRQ_PCMCIA_CD, NULL );
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#ifndef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
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    /* Disable PCMCIA bus: */
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    GPSR = GPIO_PCMCIA_BUS_ON;
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#endif
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  return 0;
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}
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static int pangolin_pcmcia_socket_state(struct pcmcia_state_array
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                                       *state_array){
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  unsigned long levels;
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  if(state_array->size<2) return -1;
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  memset(state_array->state, 0,
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         (state_array->size)*sizeof(struct pcmcia_state));
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  levels=GPLR;
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#ifndef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
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  state_array->state[1].detect=((levels & GPIO_PCMCIA_CD)==0)?1:0;
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  state_array->state[1].ready=(levels & GPIO_PCMCIA_IRQ)?1:0;
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  state_array->state[1].bvd1=1; /* Not available on Pangolin. */
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  state_array->state[1].bvd2=1; /* Not available on Pangolin. */
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  state_array->state[1].wrprot=0; /* Not available on Pangolin. */
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  state_array->state[1].vs_3v=1;  /* Can only apply 3.3V on Pangolin. */
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  state_array->state[1].vs_Xv=0;
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#else
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  state_array->state[0].detect=((levels & GPIO_PCMCIA_CD)==0)?1:0;
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  state_array->state[0].ready=(levels & GPIO_PCMCIA_IRQ)?1:0;
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  state_array->state[0].bvd1=1; /* Not available on Pangolin. */
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  state_array->state[0].bvd2=1; /* Not available on Pangolin. */
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  state_array->state[0].wrprot=0; /* Not available on Pangolin. */
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  state_array->state[0].vs_3v=0;  /* voltage level is determined by jumper setting */
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  state_array->state[0].vs_Xv=0;
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#endif
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  return 1;
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}
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static int pangolin_pcmcia_get_irq_info(struct pcmcia_irq_info *info){
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  if(info->sock>1) return -1;
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#ifndef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
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  if(info->sock==1)
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        info->irq=IRQ_PCMCIA_IRQ;
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#else
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  if(info->sock==0)
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        info->irq=IRQ_PCMCIA_IRQ;
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#endif
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  return 0;
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}
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static int pangolin_pcmcia_configure_socket(const struct pcmcia_configure
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                                           *configure)
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{
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  unsigned long value, flags;
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  if(configure->sock>1) return -1;
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#ifndef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
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  if(configure->sock==0) return 0;
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#endif
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  save_flags_cli(flags);
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  /* Murphy: BUS_ON different from POWER ? */
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  switch(configure->vcc){
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  case 0:
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    break;
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#ifndef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
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  case 50:
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    printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V...\n",
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           __FUNCTION__);
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  case 33:  /* Can only apply 3.3V to the CF slot. */
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    break;
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#else
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  case 50:
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    printk(KERN_WARNING "%s(): CS asked for 5V, determinded by jumper setting...\n", __FUNCTION__);
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    break;
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  case 33:
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    printk(KERN_WARNING "%s(): CS asked for 3.3V, determined by jumper setting...\n", __FUNCTION__);
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    break;
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#endif
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  default:
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    printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__,
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           configure->vcc);
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    restore_flags(flags);
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    return -1;
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  }
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#ifdef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
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  /* reset & unreset request */
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  if(configure->sock==0) {
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        if(configure->reset) {
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                GPSR |= GPIO_PCMCIA_RESET;
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        } else {
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                GPCR |= GPIO_PCMCIA_RESET;
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        }
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  }
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#endif
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  /* Silently ignore Vpp, output enable, speaker enable. */
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  restore_flags(flags);
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  return 0;
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}
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144 
static int pangolin_pcmcia_socket_init(int sock)
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{
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  /* enable card status IRQs - see sa1100_assabet.c for details  */
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  return -1;
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}
149 
 
150 
static int pangolin_pcmcia_socket_suspend(int sock)
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{
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  /* disable card status IRQs - see sa1100_assabet.c for details */
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  return -1;
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}
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struct pcmcia_low_level pangolin_pcmcia_ops = {
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  init:                 pangolin_pcmcia_init,
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  shutdown:             pangolin_pcmcia_shutdown,
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  socket_state:         pangolin_pcmcia_socket_state,
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  get_irq_info:         pangolin_pcmcia_get_irq_info,
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  configure_socket:     pangolin_pcmcia_configure_socket,
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  socket_init:          pangolin_pcmcia_socket_init,
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  socket_suspend,       pangolin_pcmcia_socket_suspend,
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};
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