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Diffstat (limited to 'arch/arm/mach-h720x/cpu-h7201.c')
-rw-r--r--arch/arm/mach-h720x/cpu-h7201.c64
1 files changed, 64 insertions, 0 deletions
diff --git a/arch/arm/mach-h720x/cpu-h7201.c b/arch/arm/mach-h720x/cpu-h7201.c
new file mode 100644
index 000000000000..743656881ed6
--- /dev/null
+++ b/arch/arm/mach-h720x/cpu-h7201.c
@@ -0,0 +1,64 @@
+/*
+ * linux/arch/arm/mach-h720x/cpu-h7201.c
+ *
+ * Copyright (C) 2003 Thomas Gleixner <tglx@linutronix.de>
+ * 2003 Robert Schwebel <r.schwebel@pengutronix.de>
+ * 2004 Sascha Hauer <s.hauer@pengutronix.de>
+ *
+ * processor specific stuff for the Hynix h7201
+ *
+ * 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/init.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <asm/types.h>
+#include <asm/hardware.h>
+#include <asm/irq.h>
+#include <asm/arch/irqs.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/time.h>
+#include "common.h"
+/*
+ * Timer interrupt handler
+ */
+static irqreturn_t
+h7201_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ write_seqlock(&xtime_lock);
+
+ CPU_REG (TIMER_VIRT, TIMER_TOPSTAT);
+ timer_tick(regs);
+
+ write_sequnlock(&xtime_lock);
+
+ return IRQ_HANDLED;
+}
+
+static struct irqaction h7201_timer_irq = {
+ .name = "h7201 Timer Tick",
+ .flags = SA_INTERRUPT,
+ .handler = h7201_timer_interrupt
+};
+
+/*
+ * Setup TIMER0 as system timer
+ */
+void __init h7201_init_time(void)
+{
+ CPU_REG (TIMER_VIRT, TM0_PERIOD) = LATCH;
+ CPU_REG (TIMER_VIRT, TM0_CTRL) = TM_RESET;
+ CPU_REG (TIMER_VIRT, TM0_CTRL) = TM_REPEAT | TM_START;
+ CPU_REG (TIMER_VIRT, TIMER_TOPCTRL) = ENABLE_TM0_INTR | TIMER_ENABLE_BIT;
+
+ setup_irq(IRQ_TIMER0, &h7201_timer_irq);
+}
+
+struct sys_timer h7201_timer = {
+ .init = h7201_init_time,
+ .offset = h720x_gettimeoffset,
+};