patch-2.4.13 linux/drivers/pcmcia/sa1100_assabet.c

• Lines: 150
• Date: Thu Oct 11 09:43:29 2001
• Orig file: v2.4.12/linux/drivers/pcmcia/sa1100_assabet.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.12/linux/drivers/pcmcia/sa1100_assabet.c linux/drivers/pcmcia/sa1100_assabet.c
@@ -0,0 +1,149 @@
+/*
+ * drivers/pcmcia/sa1100_assabet.c
+ *
+ * PCMCIA implementation routines for Assabet
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/sched.h>
+
+#include <asm/hardware.h>
+#include <asm/irq.h>
+#include <asm/arch/pcmcia.h>
+
+
+static int assabet_pcmcia_init(struct pcmcia_init *init){
+  int irq, res;
+
+  /* Enable CF bus: */
+  BCR_clear(BCR_CF_BUS_OFF);
+
+  /* All those are inputs */
+  GPDR &= ~(GPIO_CF_CD | GPIO_CF_BVD2 | GPIO_CF_BVD1 | GPIO_CF_IRQ);
+
+  /* Set transition detect */
+  set_GPIO_IRQ_edge( GPIO_CF_CD|GPIO_CF_BVD2|GPIO_CF_BVD1, GPIO_BOTH_EDGES );
+  set_GPIO_IRQ_edge( GPIO_CF_IRQ, GPIO_FALLING_EDGE );
+
+  /* Register interrupts */
+  irq = IRQ_GPIO_CF_CD;
+  res = request_irq( irq, init->handler, SA_INTERRUPT, "CF_CD", NULL );
+  if( res < 0 ) goto irq_err;
+  irq = IRQ_GPIO_CF_BVD2;
+  res = request_irq( irq, init->handler, SA_INTERRUPT, "CF_BVD2", NULL );
+  if( res < 0 ) goto irq_err;
+  irq = IRQ_GPIO_CF_BVD1;
+  res = request_irq( irq, init->handler, SA_INTERRUPT, "CF_BVD1", NULL );
+  if( res < 0 ) goto irq_err;
+
+  /* There's only one slot, but it's "Slot 1": */
+  return 2;
+
+irq_err:
+  printk( KERN_ERR "%s: Request for IRQ %u failed\n", __FUNCTION__, irq );
+  return -1;
+}
+
+static int assabet_pcmcia_shutdown(void)
+{
+  /* disable IRQs */
+  free_irq( IRQ_GPIO_CF_CD, NULL );
+  free_irq( IRQ_GPIO_CF_BVD2, NULL );
+  free_irq( IRQ_GPIO_CF_BVD1, NULL );
+  
+  /* Disable CF bus: */
+  BCR_set(BCR_CF_BUS_OFF);
+
+  return 0;
+}
+
+static int assabet_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[1].detect=((levels & GPIO_CF_CD)==0)?1:0;
+
+  state_array->state[1].ready=(levels & GPIO_CF_IRQ)?1:0;
+
+  state_array->state[1].bvd1=(levels & GPIO_CF_BVD1)?1:0;
+
+  state_array->state[1].bvd2=(levels & GPIO_CF_BVD2)?1:0;
+
+  state_array->state[1].wrprot=0; /* Not available on Assabet. */
+
+  state_array->state[1].vs_3v=1;  /* Can only apply 3.3V on Assabet. */
+
+  state_array->state[1].vs_Xv=0;
+
+  return 1;
+}
+
+static int assabet_pcmcia_get_irq_info(struct pcmcia_irq_info *info){
+
+  if(info->sock>1) return -1;
+
+  if(info->sock==1)
+    info->irq=IRQ_GPIO_CF_IRQ;
+
+  return 0;
+}
+
+static int assabet_pcmcia_configure_socket(const struct pcmcia_configure
+					   *configure)
+{
+  unsigned long value, flags;
+
+  if(configure->sock>1) return -1;
+
+  if(configure->sock==0) return 0;
+
+  save_flags_cli(flags);
+
+  value = BCR_value;
+
+  switch(configure->vcc){
+  case 0:
+    value &= ~BCR_CF_PWR;
+    break;
+
+  case 50:
+    printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V...\n",
+	   __FUNCTION__);
+
+  case 33:  /* Can only apply 3.3V to the CF slot. */
+    value |= BCR_CF_PWR;
+    break;
+
+  default:
+    printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__,
+	   configure->vcc);
+    restore_flags(flags);
+    return -1;
+  }
+
+  value = (configure->reset) ? (value | BCR_CF_RST) : (value & ~BCR_CF_RST);
+
+  /* Silently ignore Vpp, output enable, speaker enable. */
+
+  BCR = BCR_value = value;
+
+  restore_flags(flags);
+
+  return 0;
+}
+
+struct pcmcia_low_level assabet_pcmcia_ops = { 
+  assabet_pcmcia_init,
+  assabet_pcmcia_shutdown,
+  assabet_pcmcia_socket_state,
+  assabet_pcmcia_get_irq_info,
+  assabet_pcmcia_configure_socket
+};
+