patch-2.4.13 linux/drivers/pcmcia/sa1100_graphicsclient.c

• Lines: 155
• Date: Thu Oct 11 09:43:29 2001
• Orig file: v2.4.12/linux/drivers/pcmcia/sa1100_graphicsclient.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.12/linux/drivers/pcmcia/sa1100_graphicsclient.c linux/drivers/pcmcia/sa1100_graphicsclient.c
@@ -0,0 +1,154 @@
+/*
+ * drivers/pcmcia/sa1100_graphicsclient.c
+ *
+ * PCMCIA implementation routines for Graphics Client Plus
+ *
+ * 9/12/01   Woojung
+ *    Turn power OFF at startup
+ * 1/31/2001 Woojung Huh
+ *    Fix for GC Plus PCMCIA Reset Problem
+ * 2/27/2001 Woojung Huh [whuh@applieddata.net]
+ *    Fix
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/delay.h>
+
+#include <asm/hardware.h>
+#include <asm/irq.h>
+#include <asm/arch/pcmcia.h>
+
+#define	S0_CD_IRQ		60				// Socket 0 Card Detect IRQ
+#define	S0_STS_IRQ		55				// Socket 0 PCMCIA IRQ
+
+static volatile unsigned long *PCMCIA_Status = 
+		((volatile unsigned long *) ADS_p2v(_ADS_CS_STATUS));
+
+static volatile unsigned long *PCMCIA_Power = 
+		((volatile unsigned long *) ADS_p2v(_ADS_CS_PR));
+
+static int gcplus_pcmcia_init(struct pcmcia_init *init)
+{
+  int irq, res;
+
+  // Reset PCMCIA
+  // Reset Timing for CPLD(U2) version 8001E or later
+  *PCMCIA_Power &= ~ ADS_CS_PR_A_RESET;
+  udelay(12);			// 12 uSec
+
+  *PCMCIA_Power |= ADS_CS_PR_A_RESET;
+  mdelay(30);			// 30 mSec
+
+  // Turn off 5V
+  *PCMCIA_Power &= ~0x03;
+
+  /* Register interrupts */
+  irq = S0_CD_IRQ;
+  res = request_irq(irq, init->handler, SA_INTERRUPT, "PCMCIA 0 CD", NULL);
+  if (res < 0) {
+	  printk(KERN_ERR "%s: Request for IRQ %lu failed\n", __FUNCTION__, irq);
+	  return	-1;
+  }
+
+  return 1;			// 1 PCMCIA Slot
+}
+
+static int gcplus_pcmcia_shutdown(void)
+{
+  /* disable IRQs */
+  free_irq( S0_CD_IRQ, NULL);
+  
+  /* Shutdown PCMCIA power */
+  mdelay(2);						// 2msec
+  *PCMCIA_Power &= ~0x03;
+
+  return 0;
+}
+
+static int gcplus_pcmcia_socket_state(struct pcmcia_state_array
+				       *state_array){
+  unsigned long levels;
+
+  if(state_array->size<1) return -1;
+
+  memset(state_array->state, 0, 
+	 (state_array->size)*sizeof(struct pcmcia_state));
+
+  levels=*PCMCIA_Status;
+
+  state_array->state[0].detect=(levels & ADS_CS_ST_A_CD)?1:0;
+  state_array->state[0].ready=(levels & ADS_CS_ST_A_READY)?1:0;
+  state_array->state[0].bvd1= 0;
+  state_array->state[0].bvd2= 0;
+  state_array->state[0].wrprot=0;
+  state_array->state[0].vs_3v=0;
+  state_array->state[0].vs_Xv=0;
+
+  return 1;
+}
+
+static int gcplus_pcmcia_get_irq_info(struct pcmcia_irq_info *info)
+{
+	if (info->sock > 1)
+		return -1;
+
+	if (info->sock == 0)
+		info->irq = S0_STS_IRQ;
+
+  	return 0;
+}
+
+static int gcplus_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:
+	  *PCMCIA_Power &= ~(ADS_CS_PR_A_3V_POWER | ADS_CS_PR_A_5V_POWER);
+    break;
+
+  case 50:
+	  *PCMCIA_Power &= ~(ADS_CS_PR_A_3V_POWER | ADS_CS_PR_A_5V_POWER);
+	  *PCMCIA_Power |= ADS_CS_PR_A_5V_POWER;
+	break;
+
+  case 33:
+	  *PCMCIA_Power &= ~(ADS_CS_PR_A_3V_POWER | ADS_CS_PR_A_5V_POWER);
+	  *PCMCIA_Power |= ADS_CS_PR_A_3V_POWER;
+    break;
+
+  default:
+    printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__,
+	   configure->vcc);
+    restore_flags(flags);
+    return -1;
+  }
+
+  /* Silently ignore Vpp, output enable, speaker enable. */
+
+  // Reset PCMCIA
+  *PCMCIA_Power &= ~ ADS_CS_PR_A_RESET;
+  udelay(12);
+
+  *PCMCIA_Power |= ADS_CS_PR_A_RESET;
+  mdelay(30);
+
+  restore_flags(flags);
+
+  return 0;
+}
+
+struct pcmcia_low_level gcplus_pcmcia_ops = { 
+  gcplus_pcmcia_init,
+  gcplus_pcmcia_shutdown,
+  gcplus_pcmcia_socket_state,
+  gcplus_pcmcia_get_irq_info,
+  gcplus_pcmcia_configure_socket
+};
+