clocksource: apb: Share APB timer code with other platforms

[karo-tx-linux.git] / include / linux / dw_apb_timer.h

diff --git a/include/linux/dw_apb_timer.h b/include/linux/dw_apb_timer.h
new file mode 100644 (file)
index 0000000..49638ea
--- /dev/null
+++ b/include/linux/dw_apb_timer.h
@@ -0,0 +1,56 @@
+/*
+ * (C) Copyright 2009 Intel Corporation
+ * Author: Jacob Pan (jacob.jun.pan@intel.com)
+ *
+ * Shared with ARM platforms, Jamie Iles, Picochip 2011
+ *
+ * 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.
+ *
+ * Support for the Synopsys DesignWare APB Timers.
+ */
+#ifndef __DW_APB_TIMER_H__
+#define __DW_APB_TIMER_H__
+
+#include <linux/clockchips.h>
+#include <linux/clocksource.h>
+#include <linux/interrupt.h>
+
+#define APBTMRS_REG_SIZE       0x14
+
+struct dw_apb_timer {
+       void __iomem                            *base;
+       unsigned long                           freq;
+       int                                     irq;
+};
+
+struct dw_apb_clock_event_device {
+       struct clock_event_device               ced;
+       struct dw_apb_timer                     timer;
+       struct irqaction                        irqaction;
+       void                                    (*eoi)(struct dw_apb_timer *);
+};
+
+struct dw_apb_clocksource {
+       struct dw_apb_timer                     timer;
+       struct clocksource                      cs;
+};
+
+void dw_apb_clockevent_register(struct dw_apb_clock_event_device *dw_ced);
+void dw_apb_clockevent_pause(struct dw_apb_clock_event_device *dw_ced);
+void dw_apb_clockevent_resume(struct dw_apb_clock_event_device *dw_ced);
+void dw_apb_clockevent_stop(struct dw_apb_clock_event_device *dw_ced);
+
+struct dw_apb_clock_event_device *
+dw_apb_clockevent_init(int cpu, const char *name, unsigned rating,
+                      void __iomem *base, int irq, unsigned long freq);
+struct dw_apb_clocksource *
+dw_apb_clocksource_init(unsigned rating, char *name, void __iomem *base,
+                       unsigned long freq);
+void dw_apb_clocksource_register(struct dw_apb_clocksource *dw_cs);
+void dw_apb_clocksource_start(struct dw_apb_clocksource *dw_cs);
+cycle_t dw_apb_clocksource_read(struct dw_apb_clocksource *dw_cs);
+void dw_apb_clocksource_unregister(struct dw_apb_clocksource *dw_cs);
+
+#endif /* __DW_APB_TIMER_H__ */