/*
   * drivers/pcmcia/sa1100_shannon.c
   *
   * PCMCIA implementation routines for Shannon
   *
   */
  #include <linux/module.h>
  #include <linux/kernel.h>

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

  #include <mach/hardware.h>

  #include <asm/mach-types.h>

  #include <mach/shannon.h>

  #include <asm/irq.h>
  #include "sa1100_generic.h"
  
  static struct pcmcia_irqs irqs[] = {
  	{ 0, SHANNON_IRQ_GPIO_EJECT_0, "PCMCIA_CD_0" },
  	{ 1, SHANNON_IRQ_GPIO_EJECT_1, "PCMCIA_CD_1" },
  };
  
  static int shannon_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
  {
  	/* All those are inputs */
  	GPDR &= ~(SHANNON_GPIO_EJECT_0 | SHANNON_GPIO_EJECT_1 | 
  		  SHANNON_GPIO_RDY_0 | SHANNON_GPIO_RDY_1);
  	GAFR &= ~(SHANNON_GPIO_EJECT_0 | SHANNON_GPIO_EJECT_1 | 
  		  SHANNON_GPIO_RDY_0 | SHANNON_GPIO_RDY_1);
  
  	skt->irq = skt->nr ? SHANNON_IRQ_GPIO_RDY_1 : SHANNON_IRQ_GPIO_RDY_0;
  
  	return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
  }
  
  static void shannon_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
  {
  	soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
  }
  
  static void
  shannon_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
  			    struct pcmcia_state *state)
  {
  	unsigned long levels = GPLR;
  
  	switch (skt->nr) {
  	case 0:
  		state->detect = (levels & SHANNON_GPIO_EJECT_0) ? 0 : 1;
  		state->ready  = (levels & SHANNON_GPIO_RDY_0) ? 1 : 0;
  		state->wrprot = 0; /* Not available on Shannon. */
  		state->bvd1   = 1; 
  		state->bvd2   = 1; 
  		state->vs_3v  = 1; /* FIXME Can only apply 3.3V on Shannon. */
  		state->vs_Xv  = 0;
  		break;
  
  	case 1:
  		state->detect = (levels & SHANNON_GPIO_EJECT_1) ? 0 : 1;
  		state->ready  = (levels & SHANNON_GPIO_RDY_1) ? 1 : 0;
  		state->wrprot = 0; /* Not available on Shannon. */
  		state->bvd1   = 1; 
  		state->bvd2   = 1; 
  		state->vs_3v  = 1; /* FIXME Can only apply 3.3V on Shannon. */
  		state->vs_Xv  = 0;
  		break;
  	}
  }
  
  static int
  shannon_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
  				const socket_state_t *state)
  {
  	switch (state->Vcc) {
  	case 0:	/* power off */

  		printk(KERN_WARNING "%s(): CS asked for 0V, still applying 3.3V..
  ", __func__);

  		break;
  	case 50:

  		printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V..
  ", __func__);

  	case 33:
  		break;
  	default:
  		printk(KERN_ERR "%s(): unrecognized Vcc %u
  ",

  		       __func__, state->Vcc);

  		return -1;
  	}

  	printk(KERN_WARNING "%s(): Warning, Can't perform reset
  ", __func__);

  	
  	/* Silently ignore Vpp, output enable, speaker enable. */
  
  	return 0;
  }
  
  static void shannon_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
  {
  	soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
  }
  
  static void shannon_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
  {
  	soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));
  }
  
  static struct pcmcia_low_level shannon_pcmcia_ops = {
  	.owner			= THIS_MODULE,
  	.hw_init		= shannon_pcmcia_hw_init,
  	.hw_shutdown		= shannon_pcmcia_hw_shutdown,
  	.socket_state		= shannon_pcmcia_socket_state,
  	.configure_socket	= shannon_pcmcia_configure_socket,
  
  	.socket_init		= shannon_pcmcia_socket_init,
  	.socket_suspend		= shannon_pcmcia_socket_suspend,
  };
  
  int __init pcmcia_shannon_init(struct device *dev)
  {
  	int ret = -ENODEV;
  
  	if (machine_is_shannon())
  		ret = sa11xx_drv_pcmcia_probe(dev, &shannon_pcmcia_ops, 0, 2);
  
  	return ret;
  }