patch-2.4.13 linux/drivers/pcmcia/sa1100_pangolin.c

• Lines: 158
• Date: Thu Oct 11 09:43:29 2001
• Orig file: v2.4.12/linux/drivers/pcmcia/sa1100_pangolin.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.12/linux/drivers/pcmcia/sa1100_pangolin.c linux/drivers/pcmcia/sa1100_pangolin.c
@@ -0,0 +1,157 @@
+/*
+ * drivers/pcmcia/sa1100_pangolin.c
+ *
+ * PCMCIA implementation routines for Pangolin
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/sched.h>
+
+#include <asm/hardware.h>
+#include <asm/irq.h>
+#include <asm/arch/pcmcia.h>
+
+static int pangolin_pcmcia_init(struct pcmcia_init *init){
+  int irq, res;
+
+  /* set GPIO_PCMCIA_CD & GPIO_PCMCIA_IRQ as inputs */
+  GPDR &= ~(GPIO_PCMCIA_CD|GPIO_PCMCIA_IRQ);
+#ifndef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
+  /* set GPIO pins GPIO_PCMCIA_BUS_ON & GPIO_PCMCIA_RESET as output */
+  GPDR |= (GPIO_PCMCIA_BUS_ON|GPIO_PCMCIA_RESET);
+  /* Enable PCMCIA bus: */
+  GPCR = GPIO_PCMCIA_BUS_ON;
+#else
+  /* set GPIO pin GPIO_PCMCIA_RESET as output */
+  GPDR |= GPIO_PCMCIA_RESET;
+#endif
+  /* Set transition detect */
+  set_GPIO_IRQ_edge( GPIO_PCMCIA_CD, GPIO_BOTH_EDGES );
+  set_GPIO_IRQ_edge( GPIO_PCMCIA_IRQ, GPIO_FALLING_EDGE );
+
+  /* Register interrupts */
+  irq = IRQ_PCMCIA_CD;
+  res = request_irq( irq, init->handler, SA_INTERRUPT, "PCMCIA_CD", 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 %lu failed\n", __FUNCTION__, irq );
+  return -1;
+}
+
+static int pangolin_pcmcia_shutdown(void)
+{
+  /* disable IRQs */
+  free_irq( IRQ_PCMCIA_CD, NULL );
+#ifndef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
+    /* Disable PCMCIA bus: */
+    GPSR = GPIO_PCMCIA_BUS_ON;
+#endif
+  return 0;
+}
+
+static int pangolin_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;
+#ifndef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
+  state_array->state[1].detect=((levels & GPIO_PCMCIA_CD)==0)?1:0;
+  state_array->state[1].ready=(levels & GPIO_PCMCIA_IRQ)?1:0;
+  state_array->state[1].bvd1=1; /* Not available on Pangolin. */
+  state_array->state[1].bvd2=1; /* Not available on Pangolin. */
+  state_array->state[1].wrprot=0; /* Not available on Pangolin. */
+  state_array->state[1].vs_3v=1;  /* Can only apply 3.3V on Pangolin. */
+  state_array->state[1].vs_Xv=0;
+#else
+  state_array->state[0].detect=((levels & GPIO_PCMCIA_CD)==0)?1:0;
+  state_array->state[0].ready=(levels & GPIO_PCMCIA_IRQ)?1:0;
+  state_array->state[0].bvd1=1; /* Not available on Pangolin. */
+  state_array->state[0].bvd2=1; /* Not available on Pangolin. */
+  state_array->state[0].wrprot=0; /* Not available on Pangolin. */
+  state_array->state[0].vs_3v=0;  /* voltage level is determined by jumper setting */
+  state_array->state[0].vs_Xv=0;
+#endif
+  return 1;
+}
+
+static int pangolin_pcmcia_get_irq_info(struct pcmcia_irq_info *info){
+
+  if(info->sock>1) return -1;
+#ifndef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
+  if(info->sock==1)
+	info->irq=IRQ_PCMCIA_IRQ;
+#else
+  if(info->sock==0)
+        info->irq=IRQ_PCMCIA_IRQ;
+#endif
+  return 0;
+}
+
+static int pangolin_pcmcia_configure_socket(const struct pcmcia_configure
+					   *configure)
+{
+  unsigned long value, flags;
+
+  if(configure->sock>1) return -1;
+#ifndef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
+  if(configure->sock==0) return 0;
+#endif
+  save_flags_cli(flags);
+
+  /* Murphy: BUS_ON different from POWER ? */
+
+  switch(configure->vcc){
+  case 0:
+    break;
+#ifndef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
+  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. */
+    break;
+#else
+  case 50:
+    printk(KERN_WARNING "%s(): CS asked for 5V, determinded by jumper setting...\n", __FUNCTION__);
+    break;
+  case 33:
+    printk(KERN_WARNING "%s(): CS asked for 3.3V, determined by jumper setting...\n", __FUNCTION__);
+    break;
+#endif
+  default:
+    printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__,
+	   configure->vcc);
+    restore_flags(flags);
+    return -1;
+  }
+#ifdef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
+  /* reset & unreset request */
+  if(configure->sock==0) {
+	if(configure->reset) {
+		GPSR |= GPIO_PCMCIA_RESET;
+	} else {
+		GPCR |= GPIO_PCMCIA_RESET;
+	}
+  }
+#endif
+  /* Silently ignore Vpp, output enable, speaker enable. */
+  restore_flags(flags);
+  return 0;
+}
+
+struct pcmcia_low_level pangolin_pcmcia_ops = { 
+  pangolin_pcmcia_init,
+  pangolin_pcmcia_shutdown,
+  pangolin_pcmcia_socket_state,
+  pangolin_pcmcia_get_irq_info,
+  pangolin_pcmcia_configure_socket
+};
+