patch-2.1.80 linux/arch/arm/kernel/oldlatches.c

• Lines: 54
• Date: Tue Jan 20 16:39:41 1998
• Orig file: v2.1.79/linux/arch/arm/kernel/oldlatches.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.79/linux/arch/arm/kernel/oldlatches.c linux/arch/arm/kernel/oldlatches.c
@@ -0,0 +1,53 @@
+/* Support for the latches on the old Archimedes which control the floppy,
+ * hard disc and printer
+ *
+ * (c) David Alan Gilbert 1995/1996
+ */
+#include <linux/kernel.h>
+
+#include <asm/io.h>
+#include <asm/hardware.h>
+
+#ifdef LATCHAADDR
+/*
+ * They are static so that everyone who accesses them has to go through here
+ */
+static unsigned char LatchACopy;
+
+/* newval=(oldval & ~mask)|newdata */
+void oldlatch_aupdate(unsigned char mask,unsigned char newdata)
+{
+    LatchACopy=(LatchACopy & ~mask)|newdata;
+    outb(LatchACopy, LATCHAADDR);
+#ifdef DEBUG
+    printk("oldlatch_A:0x%2x\n",LatchACopy);
+#endif
+
+}
+#endif
+
+#ifdef LATCHBADDR
+static unsigned char LatchBCopy;
+
+/* newval=(oldval & ~mask)|newdata */
+void oldlatch_bupdate(unsigned char mask,unsigned char newdata)
+{
+    LatchBCopy=(LatchBCopy & ~mask)|newdata;
+    outb(LatchBCopy, LATCHBADDR);
+#ifdef DEBUG
+    printk("oldlatch_B:0x%2x\n",LatchBCopy);
+#endif
+}
+#endif
+
+void oldlatch_init(void)
+{
+    printk("oldlatch: init\n");
+#ifdef LATCHAADDR
+    oldlatch_aupdate(0xff,0xff);
+#endif
+#ifdef LATCHBADDR
+    oldlatch_bupdate(0xff,0x8); /* Thats no FDC reset...*/
+#endif
+    return ;
+}