text: /*
   * drivers/pcmcia/sa1100_assabet.c
   *
   * PCMCIA implementation routines for Assabet
   *
   */
  #include <linux/module.h>
  #include <linux/kernel.h>
  #include <linux/errno.h>
  #include <linux/interrupt.h>
  #include <linux/device.h>
  #include <linux/init.h>
  #include <linux/gpio.h>
  
  #include <asm/mach-types.h>
  #include <mach/assabet.h>
  
  #include "sa1100_generic.h"
  
  static int assabet_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
  {
  	skt->stat[SOC_STAT_CD].gpio = ASSABET_GPIO_CF_CD;
  	skt->stat[SOC_STAT_CD].name = "CF CD";
  	skt->stat[SOC_STAT_BVD1].gpio = ASSABET_GPIO_CF_BVD1;
  	skt->stat[SOC_STAT_BVD1].name = "CF BVD1";
  	skt->stat[SOC_STAT_BVD2].gpio = ASSABET_GPIO_CF_BVD2;
  	skt->stat[SOC_STAT_BVD2].name = "CF BVD2";
  	skt->stat[SOC_STAT_RDY].gpio = ASSABET_GPIO_CF_IRQ;
  	skt->stat[SOC_STAT_RDY].name = "CF RDY";
  
  	return 0;
  }
  
  static void
  assabet_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
  {
  	state->vs_3v  = 1; /* Can only apply 3.3V on Assabet. */
  	state->vs_Xv  = 0;
  }
  
  static int
  assabet_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
  {
  	unsigned int mask;
  
  	switch (state->Vcc) {
  	case 0:
  		mask = 0;
  		break;
  
  	case 50:
  		printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V...\n",
  			__func__);
  
  	case 33:  /* Can only apply 3.3V to the CF slot. */
  		mask = ASSABET_BCR_CF_PWR;
  		break;
  
  	default:
  		printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __func__,
  			state->Vcc);
  		return -1;
  	}
  
  	/* Silently ignore Vpp, speaker enable. */
  
  	if (state->flags & SS_RESET)
  		mask |= ASSABET_BCR_CF_RST;
  	if (!(state->flags & SS_OUTPUT_ENA))
  		mask |= ASSABET_BCR_CF_BUS_OFF;
  
  	ASSABET_BCR_frob(ASSABET_BCR_CF_RST | ASSABET_BCR_CF_PWR |
  			ASSABET_BCR_CF_BUS_OFF, mask);
  
  	return 0;
  }
  
  /*
   * Disable card status IRQs on suspend.
   */
  static void assabet_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
  {
  	/*
  	 * Tristate the CF bus signals.  Also assert CF
  	 * reset as per user guide page 4-11.
  	 */
  	ASSABET_BCR_set(ASSABET_BCR_CF_BUS_OFF | ASSABET_BCR_CF_RST);
  }
  
  static struct pcmcia_low_level assabet_pcmcia_ops = { 
  	.owner			= THIS_MODULE,
  	.hw_init		= assabet_pcmcia_hw_init,
  	.socket_state		= assabet_pcmcia_socket_state,
  	.configure_socket	= assabet_pcmcia_configure_socket,
  	.socket_suspend		= assabet_pcmcia_socket_suspend,
  };
  
  int pcmcia_assabet_init(struct device *dev)
  {
  	int ret = -ENODEV;
  
  	if (machine_is_assabet() && !machine_has_neponset())
  		ret = sa11xx_drv_pcmcia_probe(dev, &assabet_pcmcia_ops, 1, 1);
  
  	return ret;
  }
  