Eric Lee / smarc-fsl-linux-kernel

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drivers/pcmcia/sa1100_jornada720.c 2.73 KB
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1da177e4c   Linus Torvalds   Linux-2.6.12-rc2 
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  /*
   * drivers/pcmcia/sa1100_jornada720.c
   *
   * Jornada720 PCMCIA specific routines
   *
   */
  #include <linux/module.h>
  #include <linux/kernel.h>
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2 
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  #include <linux/device.h>
  #include <linux/errno.h>
  #include <linux/init.h>
a09e64fbc   Russell King   [ARM] Move includ... 
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  #include <mach/hardware.h>
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  #include <asm/hardware/sa1111.h>
  #include <asm/mach-types.h>
  
  #include "sa1111_generic.h"
  
  #define SOCKET0_POWER   GPIO_GPIO0
  #define SOCKET0_3V      GPIO_GPIO2
  #define SOCKET1_POWER   (GPIO_GPIO1 | GPIO_GPIO3)
  #warning *** Does SOCKET1_3V actually do anything?
  #define SOCKET1_3V	GPIO_GPIO3
  
  static int jornada720_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
  {
    /*
     * What is all this crap for?
     */
    GRER |= 0x00000002;
    /* Set GPIO_A<3:1> to be outputs for PCMCIA/CF power controller: */
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    sa1111_set_io_dir(SA1111_DEV(skt->dev), GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0, 0);
    sa1111_set_io(SA1111_DEV(skt->dev), GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0);
    sa1111_set_sleep_io(SA1111_DEV(skt->dev), GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0);
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    return sa1111_pcmcia_hw_init(skt);
  }
  
  static int
  jornada720_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
  {
    unsigned int pa_dwr_mask, pa_dwr_set;
    int ret;
2e11cb4c5   Harvey Harrison   pcmcia: replace r... 
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  printk("%s(): config socket %d vcc %d vpp %d
  ", __func__,
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2 
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  	skt->nr, state->Vcc, state->Vpp);
  
    switch (skt->nr) {
    case 0:
      pa_dwr_mask = SOCKET0_POWER | SOCKET0_3V;
  
      switch (state->Vcc) {
      default:
      case 0:	pa_dwr_set = 0;					break;
      case 33:	pa_dwr_set = SOCKET0_POWER | SOCKET0_3V;	break;
      case 50:	pa_dwr_set = SOCKET0_POWER;			break;
      }
      break;
  
    case 1:
      pa_dwr_mask = SOCKET1_POWER;
  
      switch (state->Vcc) {
      default:
      case 0:	pa_dwr_set = 0;					break;
      case 33:	pa_dwr_set = SOCKET1_POWER;			break;
      case 50:	pa_dwr_set = SOCKET1_POWER;			break;
      }
      break;
  
    default:
      return -1;
    }
  
    if (state->Vpp != state->Vcc && state->Vpp != 0) {
      printk(KERN_ERR "%s(): slot cannot support VPP %u
  ",
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  	   __func__, state->Vpp);
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      return -1;
    }
  
    ret = sa1111_pcmcia_configure_socket(skt, state);
    if (ret == 0) {
      unsigned long flags;
  
      local_irq_save(flags);
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      sa1111_set_io(SA1111_DEV(skt->dev), pa_dwr_mask, pa_dwr_set);
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      local_irq_restore(flags);
    }
  
    return ret;
  }
  
  static struct pcmcia_low_level jornada720_pcmcia_ops = {
    .owner		= THIS_MODULE,
    .hw_init		= jornada720_pcmcia_hw_init,
    .hw_shutdown		= sa1111_pcmcia_hw_shutdown,
    .socket_state		= sa1111_pcmcia_socket_state,
    .configure_socket	= jornada720_pcmcia_configure_socket,
  
    .socket_init		= sa1111_pcmcia_socket_init,
    .socket_suspend	= sa1111_pcmcia_socket_suspend,
  };
85e6c7a7d   Kristoffer Ericson   [ARM] 4810/1: - F... 
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  int __devinit pcmcia_jornada720_init(struct device *dev)
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  {
  	int ret = -ENODEV;
  
  	if (machine_is_jornada720())
  		ret = sa11xx_drv_pcmcia_probe(dev, &jornada720_pcmcia_ops, 0, 2);
  
  	return ret;
  }