patch-2.4.13 linux/drivers/pcmcia/sa1100_xp860.c

• Lines: 256
• Date: Thu Oct 11 09:43:29 2001
• Orig file: v2.4.12/linux/drivers/pcmcia/sa1100_xp860.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.12/linux/drivers/pcmcia/sa1100_xp860.c linux/drivers/pcmcia/sa1100_xp860.c
@@ -0,0 +1,255 @@
+/*
+ * drivers/pcmcia/sa1100_xp860.c
+ *
+ * XP860 PCMCIA specific routines
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+
+#include <asm/hardware.h>
+#include <asm/irq.h>
+#include <asm/arch/pcmcia.h>
+
+#define NCR_A0VPP	(1<<16)
+#define NCR_A1VPP	(1<<17)
+
+static int xp860_pcmcia_init(struct pcmcia_init *init){
+  int return_val=0;
+
+  /* Set GPIO_A<3:0> to be outputs for PCMCIA/CF power controller: */
+  PA_DDR &= ~(GPIO_GPIO0 | GPIO_GPIO1 | GPIO_GPIO2 | GPIO_GPIO3);
+  
+  /* MAX1600 to standby mode: */
+  PA_DWR &= ~(GPIO_GPIO0 | GPIO_GPIO1 | GPIO_GPIO2 | GPIO_GPIO3);
+  GPDR |= (NCR_A0VPP | NCR_A1VPP);
+  GPCR &= ~(NCR_A0VPP | NCR_A1VPP);
+
+  INTPOL1 |= 
+    (1 << (S0_READY_NINT - SA1111_IRQ(32))) |
+    (1 << (S1_READY_NINT - SA1111_IRQ(32))) |
+    (1 << (S0_CD_VALID - SA1111_IRQ(32))) |
+    (1 << (S1_CD_VALID - SA1111_IRQ(32))) |
+    (1 << (S0_BVD1_STSCHG - SA1111_IRQ(32))) |
+    (1 << (S1_BVD1_STSCHG - SA1111_IRQ(32)));
+
+  return_val+=request_irq(S0_CD_VALID, init->handler, SA_INTERRUPT,
+			  "XP860 PCMCIA (0) CD", NULL);
+  return_val+=request_irq(S1_CD_VALID, init->handler, SA_INTERRUPT,
+			  "XP860 CF (1) CD", NULL);
+  return_val+=request_irq(S0_BVD1_STSCHG, init->handler, SA_INTERRUPT,
+			  "XP860 PCMCIA (0) BVD1", NULL);
+  return_val+=request_irq(S1_BVD1_STSCHG, init->handler, SA_INTERRUPT,
+			  "XP860 CF (1) BVD1", NULL);
+
+  return (return_val<0) ? -1 : 2;
+}
+
+static int xp860_pcmcia_shutdown(void){
+
+  free_irq(S0_CD_VALID, NULL);
+  free_irq(S1_CD_VALID, NULL);
+  free_irq(S0_BVD1_STSCHG, NULL);
+  free_irq(S1_BVD1_STSCHG, NULL);
+
+  INTPOL1 &= 
+    ~((1 << (S0_CD_VALID - SA1111_IRQ(32))) |
+      (1 << (S1_CD_VALID - SA1111_IRQ(32))) |
+      (1 << (S0_BVD1_STSCHG - SA1111_IRQ(32))) |
+      (1 << (S1_BVD1_STSCHG - SA1111_IRQ(32))));
+
+  return 0;
+}
+
+static int xp860_pcmcia_socket_state(struct pcmcia_state_array
+					*state_array){
+  unsigned long status;
+  int return_val=1;
+
+  if(state_array->size<2) return -1;
+
+  memset(state_array->state, 0, 
+	 (state_array->size)*sizeof(struct pcmcia_state));
+
+  status=PCSR;
+
+  state_array->state[0].detect=((status & PCSR_S0_DETECT)==0)?1:0;
+
+  state_array->state[0].ready=((status & PCSR_S0_READY)==0)?0:1;
+
+  state_array->state[0].bvd1=((status & PCSR_S0_BVD1)==0)?0:1;
+
+  state_array->state[0].bvd2=((status & PCSR_S0_BVD2)==0)?0:1;
+
+  state_array->state[0].wrprot=((status & PCSR_S0_WP)==0)?0:1;
+
+  state_array->state[0].vs_3v=((status & PCSR_S0_VS1)==0)?1:0;
+
+  state_array->state[0].vs_Xv=((status & PCSR_S0_VS2)==0)?1:0;
+
+  state_array->state[1].detect=((status & PCSR_S1_DETECT)==0)?1:0;
+
+  state_array->state[1].ready=((status & PCSR_S1_READY)==0)?0:1;
+
+  state_array->state[1].bvd1=((status & PCSR_S1_BVD1)==0)?0:1;
+
+  state_array->state[1].bvd2=((status & PCSR_S1_BVD2)==0)?0:1;
+
+  state_array->state[1].wrprot=((status & PCSR_S1_WP)==0)?0:1;
+
+  state_array->state[1].vs_3v=((status & PCSR_S1_VS1)==0)?1:0;
+
+  state_array->state[1].vs_Xv=((status & PCSR_S1_VS2)==0)?1:0;
+
+  return return_val;
+}
+
+static int xp860_pcmcia_get_irq_info(struct pcmcia_irq_info *info){
+
+  switch(info->sock){
+  case 0:
+    info->irq=S0_READY_NINT;
+    break;
+
+  case 1:
+    info->irq=S1_READY_NINT;
+    break;
+
+  default:
+    return -1;
+  }
+
+  return 0;
+}
+
+static int xp860_pcmcia_configure_socket(const struct pcmcia_configure
+					    *configure){
+  unsigned long pccr=PCCR, ncr=GPLR, gpio=PA_DWR;
+
+
+  /* Neponset uses the Maxim MAX1600, with the following connections:
+   *
+   *   MAX1600      Neponset
+   *
+   *    A0VCC        SA-1111 GPIO A<1>
+   *    A1VCC        SA-1111 GPIO A<0>
+   *    A0VPP        CPLD NCR A0VPP
+   *    A1VPP        CPLD NCR A1VPP
+   *    B0VCC        SA-1111 GPIO A<2>
+   *    B1VCC        SA-1111 GPIO A<3>
+   *    B0VPP        ground (slot B is CF)
+   *    B1VPP        ground (slot B is CF)
+   *
+   *     VX          VCC (5V)
+   *     VY          VCC3_3 (3.3V)
+   *     12INA       12V
+   *     12INB       ground (slot B is CF)
+   *
+   * The MAX1600 CODE pin is tied to ground, placing the device in 
+   * "Standard Intel code" mode. Refer to the Maxim data sheet for
+   * the corresponding truth table.
+   */
+
+  switch(configure->sock){
+  case 0:
+    
+    switch(configure->vcc){
+    case 0:
+      gpio&=~(GPIO_GPIO0 | GPIO_GPIO1);
+      break;
+
+    case 33:
+      pccr=(pccr & ~PCCR_S0_PSE);
+      gpio=(gpio & ~(GPIO_GPIO0 | GPIO_GPIO1)) | GPIO_GPIO1;
+      break;
+
+    case 50:
+      pccr=(pccr | PCCR_S0_PSE);
+      gpio=(gpio & ~(GPIO_GPIO0 | GPIO_GPIO1)) | GPIO_GPIO0;
+      break;
+
+    default:
+      printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__,
+	     configure->vcc);
+      return -1;
+    }
+
+    switch(configure->vpp){
+    case 0:
+      ncr&=~(NCR_A0VPP | NCR_A1VPP);
+      break;
+
+    case 120:
+      ncr=(ncr & ~(NCR_A0VPP | NCR_A1VPP)) | NCR_A1VPP;
+      break;
+
+    default:
+      if(configure->vpp == configure->vcc)
+	ncr=(ncr & ~(NCR_A0VPP | NCR_A1VPP)) | NCR_A0VPP;
+      else {
+	printk(KERN_ERR "%s(): unrecognized Vpp %u\n", __FUNCTION__,
+	       configure->vpp);
+	return -1;
+      }
+    }
+
+    pccr=(configure->reset)?(pccr | PCCR_S0_RST):(pccr & ~PCCR_S0_RST);
+    pccr=(configure->output)?(pccr | PCCR_S0_FLT):(pccr & ~PCCR_S0_FLT);
+
+    break;
+
+  case 1:
+    switch(configure->vcc){
+    case 0:
+      gpio&=~(GPIO_GPIO2 | GPIO_GPIO3);
+      break;
+
+    case 33:
+      pccr=(pccr & ~PCCR_S1_PSE);
+      gpio=(gpio & ~(GPIO_GPIO2 | GPIO_GPIO3)) | GPIO_GPIO2;
+      break;
+
+    case 50:
+      pccr=(pccr | PCCR_S1_PSE);
+      gpio=(gpio & ~(GPIO_GPIO2 | GPIO_GPIO3)) | GPIO_GPIO3;
+      break;
+
+    default:
+      printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__,
+	     configure->vcc);
+      return -1;
+    }
+
+    if(configure->vpp!=configure->vcc && configure->vpp!=0){
+      printk(KERN_ERR "%s(): CF slot cannot support Vpp %u\n", __FUNCTION__,
+	     configure->vpp);
+      return -1;
+    }
+
+    pccr=(configure->reset)?(pccr | PCCR_S1_RST):(pccr & ~PCCR_S1_RST);
+    pccr=(configure->output)?(pccr | PCCR_S1_FLT):(pccr & ~PCCR_S1_FLT);
+
+    break;
+
+  default:
+    return -1;
+  }
+
+  PCCR = pccr;
+  ncr &= NCR_A0VPP|NCR_A1VPP;
+  GPSR = ncr;
+  GPCR = (~ncr)&(NCR_A0VPP|NCR_A1VPP);
+  PA_DWR = gpio;
+
+  return 0;
+}
+
+struct pcmcia_low_level xp860_pcmcia_ops = { 
+  xp860_pcmcia_init,
+  xp860_pcmcia_shutdown,
+  xp860_pcmcia_socket_state,
+  xp860_pcmcia_get_irq_info,
+  xp860_pcmcia_configure_socket
+};
+