/*
   * drivers/pcmcia/sa1100_cerf.c
   *
   * PCMCIA implementation routines for CerfBoard
   * Based off the Assabet.
   *
   */

  #include <linux/module.h>
  #include <linux/kernel.h>

  #include <linux/device.h>
  #include <linux/init.h>
  #include <linux/delay.h>

  #include <mach/hardware.h>

  #include <asm/mach-types.h>
  #include <asm/irq.h>

  #include <mach/cerf.h>

  #include "sa1100_generic.h"
  
  #define CERF_SOCKET	1
  
  static struct pcmcia_irqs irqs[] = {
  	{ CERF_SOCKET, CERF_IRQ_GPIO_CF_CD,   "CF_CD"   },
  	{ CERF_SOCKET, CERF_IRQ_GPIO_CF_BVD2, "CF_BVD2" },
  	{ CERF_SOCKET, CERF_IRQ_GPIO_CF_BVD1, "CF_BVD1" }
  };
  
  static int cerf_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
  {

  	skt->socket.pci_irq = CERF_IRQ_GPIO_CF_IRQ;

  
  	return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
  }
  
  static void cerf_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
  {
  	soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
  }
  
  static void
  cerf_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
  {
  	unsigned long levels = GPLR;
  
  	state->detect	= (levels & CERF_GPIO_CF_CD)  ?0:1;
  	state->ready	= (levels & CERF_GPIO_CF_IRQ) ?1:0;
  	state->bvd1	= (levels & CERF_GPIO_CF_BVD1)?1:0;
  	state->bvd2	= (levels & CERF_GPIO_CF_BVD2)?1:0;
  	state->wrprot	= 0;
  	state->vs_3v	= 1;
  	state->vs_Xv	= 0;
  }
  
  static int
  cerf_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
  			     const socket_state_t *state)
  {
  	switch (state->Vcc) {
  	case 0:
  	case 50:
  	case 33:
  		break;
  
  	default:
  		printk(KERN_ERR "%s(): unrecognized Vcc %u
  ",

  			__func__, state->Vcc);

  		return -1;
  	}
  
  	if (state->flags & SS_RESET) {
  		GPSR = CERF_GPIO_CF_RESET;
  	} else {
  		GPCR = CERF_GPIO_CF_RESET;
  	}
  
  	return 0;
  }
  
  static void cerf_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
  {
  	soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
  }
  
  static void cerf_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
  {
  	soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));
  }
  
  static struct pcmcia_low_level cerf_pcmcia_ops = { 
  	.owner			= THIS_MODULE,
  	.hw_init		= cerf_pcmcia_hw_init,
  	.hw_shutdown		= cerf_pcmcia_hw_shutdown,
  	.socket_state		= cerf_pcmcia_socket_state,
  	.configure_socket	= cerf_pcmcia_configure_socket,
  
  	.socket_init		= cerf_pcmcia_socket_init,
  	.socket_suspend		= cerf_pcmcia_socket_suspend,
  };

  int __devinit pcmcia_cerf_init(struct device *dev)

  {
  	int ret = -ENODEV;
  
  	if (machine_is_cerf())
  		ret = sa11xx_drv_pcmcia_probe(dev, &cerf_pcmcia_ops, CERF_SOCKET, 1);
  
  	return ret;
  }