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-rw-r--r--include/clocksource/timer-goldfish.h31
1 files changed, 31 insertions, 0 deletions
diff --git a/include/clocksource/timer-goldfish.h b/include/clocksource/timer-goldfish.h
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+++ b/include/clocksource/timer-goldfish.h
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+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * goldfish-timer clocksource
+ * Registers definition for the goldfish-timer device
+ */
+
+#ifndef _CLOCKSOURCE_TIMER_GOLDFISH_H
+#define _CLOCKSOURCE_TIMER_GOLDFISH_H
+
+/*
+ * TIMER_TIME_LOW get low bits of current time and update TIMER_TIME_HIGH
+ * TIMER_TIME_HIGH get high bits of time at last TIMER_TIME_LOW read
+ * TIMER_ALARM_LOW set low bits of alarm and activate it
+ * TIMER_ALARM_HIGH set high bits of next alarm
+ * TIMER_IRQ_ENABLED enable alarm interrupt
+ * TIMER_CLEAR_ALARM disarm an existing alarm
+ * TIMER_ALARM_STATUS alarm status (running or not)
+ * TIMER_CLEAR_INTERRUPT clear interrupt
+ */
+#define TIMER_TIME_LOW 0x00
+#define TIMER_TIME_HIGH 0x04
+#define TIMER_ALARM_LOW 0x08
+#define TIMER_ALARM_HIGH 0x0c
+#define TIMER_IRQ_ENABLED 0x10
+#define TIMER_CLEAR_ALARM 0x14
+#define TIMER_ALARM_STATUS 0x18
+#define TIMER_CLEAR_INTERRUPT 0x1c
+
+extern int goldfish_timer_init(int irq, void __iomem *base);
+
+#endif /* _CLOCKSOURCE_TIMER_GOLDFISH_H */