Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 78 insertions, 0 deletions

diff --git a/arch/arm/mach-epxa10db/time.c b/arch/arm/mach-epxa10db/time.c
new file mode 100644
index 000000000000..1b991f3cc3c6
--- /dev/null
+++ b/arch/arm/mach-epxa10db/time.c
@@ -0,0 +1,78 @@
+/*
+ *  linux/arch/arm/mach-epxa10db/time.c
+ *
+ *  Copyright (C) 2000 Deep Blue Solutions
+ *  Copyright (C) 2001 Altera Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/sched.h>
+
+#include <asm/hardware.h>
+#include <asm/system.h>
+#include <asm/leds.h>
+
+#include <asm/mach/time.h>
+
+#define TIMER00_TYPE (volatile unsigned int*)
+#include <asm/arch/timer00.h>
+
+static int epxa10db_set_rtc(void)
+{
+        return 1;
+}
+
+static int epxa10db_rtc_init(void)
+{
+        set_rtc = epxa10db_set_rtc;
+
+        return 0;
+}
+
+__initcall(epxa10db_rtc_init);
+
+
+/*
+ * IRQ handler for the timer
+ */
+static irqreturn_t
+epxa10db_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+        write_seqlock(&xtime_lock);
+
+        // ...clear the interrupt
+        *TIMER0_CR(IO_ADDRESS(EXC_TIMER00_BASE))|=TIMER0_CR_CI_MSK;
+
+        timer_tick(regs);
+        write_sequnlock(&xtime_lock);
+
+        return IRQ_HANDLED;
+}
+
+static struct irqaction epxa10db_timer_irq = {
+        .name           = "Excalibur Timer Tick",
+        .flags          = SA_INTERRUPT,
+        .handler        = epxa10db_timer_interrupt
+};
+
+/*
+ * Set up timer interrupt, and return the current time in seconds.
+ */
+static void __init epxa10db_timer_init(void)
+{
+        /* Start the timer */
+        *TIMER0_LIMIT(IO_ADDRESS(EXC_TIMER00_BASE))=(unsigned int)(EXC_AHB2_CLK_FREQUENCY/200);
+        *TIMER0_PRESCALE(IO_ADDRESS(EXC_TIMER00_BASE))=1;
+        *TIMER0_CR(IO_ADDRESS(EXC_TIMER00_BASE))=TIMER0_CR_IE_MSK | TIMER0_CR_S_MSK;
+
+        setup_irq(IRQ_TIMER0, &epxa10db_timer_irq);
+}
+
+struct sys_timer epxa10db_timer = {
+        .init           = epxa10db_timer_init,
+};