patch-2.4.13 linux/drivers/pcmcia/sa1100_freebird.c

• Lines: 161
• Date: Thu Oct 11 09:43:29 2001
• Orig file: v2.4.12/linux/drivers/pcmcia/sa1100_freebird.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.12/linux/drivers/pcmcia/sa1100_freebird.c linux/drivers/pcmcia/sa1100_freebird.c
@@ -0,0 +1,160 @@
+/*
+ * drivers/pcmcia/sa1100_freebird.c
+ *
+ * Created by Eric Peng <ericpeng@coventive.com>
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/sched.h>
+
+#include <asm/hardware.h>
+#include <asm/irq.h>
+#include <asm/arch/pcmcia.h>
+
+
+static int freebird_pcmcia_init(struct pcmcia_init *init){
+  int irq, res;
+
+  /* Enable Linkup CF card */
+  LINKUP_PRC = 0xc0;
+  mdelay(100);
+  LINKUP_PRC = 0xc1;
+  mdelay(100);
+  LINKUP_PRC = 0xd1;
+  mdelay(100);
+  LINKUP_PRC = 0xd1;
+  mdelay(100);
+  LINKUP_PRC = 0xc0;
+
+  /* All those are inputs */
+  ////GPDR &= ~(GPIO_CF_CD | GPIO_CF_BVD2 | GPIO_CF_BVD1 | GPIO_CF_IRQ);
+  GPDR &= ~(GPIO_FREEBIRD_CF_CD | GPIO_FREEBIRD_CF_IRQ | GPIO_FREEBIRD_CF_BVD);
+
+  /* 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 );
+  set_GPIO_IRQ_edge(GPIO_FREEBIRD_CF_CD|GPIO_FREEBIRD_CF_BVD,GPIO_BOTH_EDGES);
+  set_GPIO_IRQ_edge(GPIO_FREEBIRD_CF_IRQ, GPIO_FALLING_EDGE);
+
+  /* Register interrupts */
+  irq = IRQ_GPIO_FREEBIRD_CF_CD;
+  res = request_irq( irq, init->handler, SA_INTERRUPT, "CF_CD", NULL );
+  if( res < 0 ) goto irq_err;
+  irq = IRQ_GPIO_FREEBIRD_CF_BVD;
+  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 %lu failed\n", __FUNCTION__, irq );
+  return -1;
+}
+
+static int freebird_pcmcia_shutdown(void)
+{
+  /* disable IRQs */
+  free_irq( IRQ_GPIO_FREEBIRD_CF_CD, NULL );
+  free_irq( IRQ_GPIO_FREEBIRD_CF_BVD, NULL );
+
+  /* Disable CF card */
+  LINKUP_PRC = 0x40;  /* SSP=1   SOE=0 */
+  mdelay(100);
+
+  return 0;
+}
+
+static int freebird_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 = LINKUP_PRS;
+//printk("LINKUP_PRS=%x \n",levels);
+
+  state_array->state[0].detect=
+    ((levels & (LINKUP_CD1 | LINKUP_CD2))==0)?1:0;
+
+  state_array->state[0].ready=(levels & LINKUP_RDY)?1:0;
+
+  state_array->state[0].bvd1=(levels & LINKUP_BVD1)?1:0;
+
+  state_array->state[0].bvd2=(levels & LINKUP_BVD2)?1:0;
+
+  state_array->state[0].wrprot=0; /* Not available on Assabet. */
+
+  state_array->state[0].vs_3v=1;  /* Can only apply 3.3V on Assabet. */
+
+  state_array->state[0].vs_Xv=0;
+
+  return 1;
+}
+
+static int freebird_pcmcia_get_irq_info(struct pcmcia_irq_info *info){
+
+  if(info->sock>1) return -1;
+
+  if(info->sock==0)
+    info->irq=IRQ_GPIO_FREEBIRD_CF_IRQ;
+
+  return 0;
+}
+
+static int freebird_pcmcia_configure_socket(const struct pcmcia_configure
+					   *configure)
+{
+  unsigned long value, flags;
+
+  if(configure->sock>1) return -1;
+
+  if(configure->sock==1) return 0;
+
+  save_flags_cli(flags);
+
+  value = 0xc0;   /* SSP=1  SOE=1  CFE=1 */
+
+  switch(configure->vcc){
+  case 0:
+
+    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 |= LINKUP_S1;
+    break;
+
+  default:
+    printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__,
+	   configure->vcc);
+    restore_flags(flags);
+    return -1;
+  }
+
+  if (configure->reset)
+  value = (configure->reset) ? (value | LINKUP_RESET) : (value & ~LINKUP_RESET);
+
+  /* Silently ignore Vpp, output enable, speaker enable. */
+
+  LINKUP_PRC = value;
+//printk("LINKUP_PRC=%x\n",value);
+  restore_flags(flags);
+
+  return 0;
+}
+
+struct pcmcia_low_level freebird_pcmcia_ops = {
+  freebird_pcmcia_init,
+  freebird_pcmcia_shutdown,
+  freebird_pcmcia_socket_state,
+  freebird_pcmcia_get_irq_info,
+  freebird_pcmcia_configure_socket
+};
+