[PATCH v3 2/9] mfd: syscon: Add atmel system timer registers definition

Alexandre Belloni
2015-03-04T14:21:46Z

AT91RM920 has a memory range reserved for timer and watchdog configuration.
Expose those registers so that drivers can make use of the system timer syscon
declared in at91 DTs.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
---
include/linux/mfd/syscon/atmel-st.h | 47 +++++++++++++++++++++++++++++++++++++
1 file changed, 47 insertions(+)
create mode 100644 include/linux/mfd/syscon/atmel-st.h

diff --git a/include/linux/mfd/syscon/atmel-st.h b/include/linux/mfd/syscon/atmel-st.h
new file mode 100644
index 000000000000..8e29a1028807
--- /dev/null
+++ b/include/linux/mfd/syscon/atmel-st.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2005 Ivan Kokshaysky
+ * Copyright (C) SAN People
+ *
+ * System Timer (ST) - System peripherals registers.
+ * Based on AT91RM9200 datasheet revision E.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef _LINUX_MFD_SYSCON_ATMEL_ST_H
+#define _LINUX_MFD_SYSCON_ATMEL_ST_H
+
+#define AT91_ST_CR 0x00 /* Control Register */
+#define AT91_ST_WDRST (1 << 0) /* Watchdog Timer Restart */
+
+#define AT91_ST_PIMR 0x04 /* Period Interval Mode Register */
+#define AT91_ST_PIV (0xffff << 0) /* Period Interval Value */
+
+#define AT91_ST_WDMR 0x08 /* Watchdog Mode Register */
+#define AT91_ST_WDV (0xffff << 0) /* Watchdog Counter Value */
+#define AT91_ST_RSTEN (1 << 16) /* Reset Enable */
+#define AT91_ST_EXTEN (1 << 17) /* External Signal Assertion Enable */
+
+#define AT91_ST_RTMR 0x0c /* Real-time Mode Register */
+#define AT91_ST_RTPRES (0xffff << 0) /* Real-time Prescalar Value */
+
+#define AT91_ST_SR 0x10 /* Status Register */
+#define AT91_ST_PITS (1 << 0) /* Period Interval Timer Status */
+#define AT91_ST_WDOVF (1 << 1) /* Watchdog Overflow */
+#define AT91_ST_RTTINC (1 << 2) /* Real-time Timer Increment */
+#define AT91_ST_ALMS (1 << 3) /* Alarm Status */
+
+#define AT91_ST_IER 0x14 /* Interrupt Enable Register */
+#define AT91_ST_IDR 0x18 /* Interrupt Disable Register */
+#define AT91_ST_IMR 0x1c /* Interrupt Mask Register */
+
+#define AT91_ST_RTAR 0x20 /* Real-time Alarm Register */
+#define AT91_ST_ALMV (0xfffff << 0) /* Alarm Value */
+
+#define AT91_ST_CRTR 0x24 /* Current Real-time Register */
+#define AT91_ST_CRTV (0xfffff << 0) /* Current Real-Time Value */
+
+#endif /* _LINUX_MFD_SYSCON_ATMEL_ST_H */
--
2.1.0