patch-2.4.13 linux/drivers/pcmcia/sa1100_h3600.c

• Lines: 148
• Date: Thu Oct 11 09:43:29 2001
• Orig file: v2.4.12/linux/drivers/pcmcia/sa1100_h3600.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.12/linux/drivers/pcmcia/sa1100_h3600.c linux/drivers/pcmcia/sa1100_h3600.c
@@ -0,0 +1,147 @@
+/*
+ * drivers/pcmcia/sa1100_h3600.c
+ *
+ * PCMCIA implementation routines for H3600
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/sched.h>
+
+#include <asm/hardware.h>
+#include <asm/irq.h>
+#include <asm/arch/pcmcia.h>
+
+
+static int h3600_pcmcia_init(struct pcmcia_init *init){
+  int irq, res;
+
+  /* Enable CF bus: */
+  set_h3600_egpio(EGPIO_H3600_OPT_NVRAM_ON);
+  clr_h3600_egpio(EGPIO_H3600_OPT_RESET);
+
+  /* All those are inputs */
+  GPDR &= ~(GPIO_H3600_PCMCIA_CD0 | GPIO_H3600_PCMCIA_CD1 | GPIO_H3600_PCMCIA_IRQ0| GPIO_H3600_PCMCIA_IRQ1);
+
+  /* Set transition detect */
+  set_GPIO_IRQ_edge( GPIO_H3600_PCMCIA_CD0 | GPIO_H3600_PCMCIA_CD1, GPIO_BOTH_EDGES );
+  set_GPIO_IRQ_edge( GPIO_H3600_PCMCIA_IRQ0| GPIO_H3600_PCMCIA_IRQ1, GPIO_FALLING_EDGE );
+
+  /* Register interrupts */
+  irq = IRQ_GPIO_H3600_PCMCIA_CD0;
+  res = request_irq( irq, init->handler, SA_INTERRUPT, "PCMCIA_CD0", NULL );
+  if( res < 0 ) goto irq_err;
+  irq = IRQ_GPIO_H3600_PCMCIA_CD1;
+  res = request_irq( irq, init->handler, SA_INTERRUPT, "PCMCIA_CD1", NULL );
+  if( res < 0 ) goto irq_err;
+
+  return 2;
+
+irq_err:
+  printk( KERN_ERR __FUNCTION__ ": Request for IRQ %u failed\n", irq );
+  return -1;
+}
+
+static int h3600_pcmcia_shutdown(void)
+{
+  /* disable IRQs */
+  free_irq( IRQ_GPIO_H3600_PCMCIA_CD0, NULL );
+  free_irq( IRQ_GPIO_H3600_PCMCIA_CD1, NULL );
+  
+  /* Disable CF bus: */
+  clr_h3600_egpio(EGPIO_H3600_OPT_NVRAM_ON|EGPIO_H3600_OPT_ON);
+  set_h3600_egpio(EGPIO_H3600_OPT_RESET);
+
+  return 0;
+}
+
+static int h3600_pcmcia_socket_state(struct pcmcia_state_array
+				       *state_array){
+  unsigned long levels;
+
+  if(state_array->size<2) return -1;
+
+  memset(state_array->state, 0, 
+	 (state_array->size)*sizeof(struct pcmcia_state));
+
+  levels=GPLR;
+
+  state_array->state[0].detect=((levels & GPIO_H3600_PCMCIA_CD0)==0)?1:0;
+  state_array->state[0].ready=(levels & GPIO_H3600_PCMCIA_IRQ0)?1:0;
+  state_array->state[0].bvd1= 0;
+  state_array->state[0].bvd2= 0;
+  state_array->state[0].wrprot=0; /* Not available on H3600. */
+  state_array->state[0].vs_3v=0;
+  state_array->state[0].vs_Xv=0;
+
+  state_array->state[1].detect=((levels & GPIO_H3600_PCMCIA_CD1)==0)?1:0;
+  state_array->state[1].ready=(levels & GPIO_H3600_PCMCIA_IRQ1)?1:0;
+  state_array->state[1].bvd1=0;
+  state_array->state[1].bvd2=0;
+  state_array->state[1].wrprot=0; /* Not available on H3600. */
+  state_array->state[1].vs_3v=0;
+  state_array->state[1].vs_Xv=0;
+
+  return 1;
+}
+
+static int h3600_pcmcia_get_irq_info(struct pcmcia_irq_info *info){
+
+  switch (info->sock) {
+  case 0:
+    info->irq=IRQ_GPIO_H3600_PCMCIA_IRQ0;
+    break;
+  case 1:
+    info->irq=IRQ_GPIO_H3600_PCMCIA_IRQ1;
+    break;
+  default:
+    return -1;
+  }
+  return 0;
+}
+
+static int h3600_pcmcia_configure_socket(const struct pcmcia_configure
+					   *configure)
+{
+  unsigned long flags;
+
+  if(configure->sock>1) return -1;
+
+  save_flags_cli(flags);
+
+  switch (configure->vcc) {
+  case 0:
+    clr_h3600_egpio(EGPIO_H3600_OPT_ON);
+    break;
+
+  case 33:
+  case 50:
+    set_h3600_egpio(EGPIO_H3600_OPT_ON);
+    break;
+
+  default:
+    printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__,
+	   configure->vcc);
+    restore_flags(flags);
+    return -1;
+  }
+
+  if (configure->reset)
+    set_h3600_egpio(EGPIO_H3600_CARD_RESET);
+  else
+    clr_h3600_egpio(EGPIO_H3600_CARD_RESET);
+
+  /* Silently ignore Vpp, output enable, speaker enable. */
+
+  restore_flags(flags);
+
+  return 0;
+}
+
+struct pcmcia_low_level h3600_pcmcia_ops = { 
+  h3600_pcmcia_init,
+  h3600_pcmcia_shutdown,
+  h3600_pcmcia_socket_state,
+  h3600_pcmcia_get_irq_info,
+  h3600_pcmcia_configure_socket
+};
+