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Diffstat (limited to 'include/linux/rtc/m48t59.h')
-rw-r--r--include/linux/rtc/m48t59.h57
1 files changed, 57 insertions, 0 deletions
diff --git a/include/linux/rtc/m48t59.h b/include/linux/rtc/m48t59.h
new file mode 100644
index 000000000000..e8c7c21ceb1f
--- /dev/null
+++ b/include/linux/rtc/m48t59.h
@@ -0,0 +1,57 @@
+/*
+ * include/linux/rtc/m48t59.h
+ *
+ * Definitions for the platform data of m48t59 RTC chip driver.
+ *
+ * Copyright (c) 2007 Wind River Systems, Inc.
+ *
+ * Mark Zhan <rongkai.zhan@windriver.com>
+ *
+ * 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.
+ */
+
+#ifndef _LINUX_RTC_M48T59_H_
+#define _LINUX_RTC_M48T59_H_
+
+/*
+ * M48T59 Register Offset
+ */
+#define M48T59_YEAR 0x1fff
+#define M48T59_MONTH 0x1ffe
+#define M48T59_MDAY 0x1ffd /* Day of Month */
+#define M48T59_WDAY 0x1ffc /* Day of Week */
+#define M48T59_WDAY_CB 0x20 /* Century Bit */
+#define M48T59_WDAY_CEB 0x10 /* Century Enable Bit */
+#define M48T59_HOUR 0x1ffb
+#define M48T59_MIN 0x1ffa
+#define M48T59_SEC 0x1ff9
+#define M48T59_CNTL 0x1ff8
+#define M48T59_CNTL_READ 0x40
+#define M48T59_CNTL_WRITE 0x80
+#define M48T59_WATCHDOG 0x1ff7
+#define M48T59_INTR 0x1ff6
+#define M48T59_INTR_AFE 0x80 /* Alarm Interrupt Enable */
+#define M48T59_INTR_ABE 0x20
+#define M48T59_ALARM_DATE 0x1ff5
+#define M48T59_ALARM_HOUR 0x1ff4
+#define M48T59_ALARM_MIN 0x1ff3
+#define M48T59_ALARM_SEC 0x1ff2
+#define M48T59_UNUSED 0x1ff1
+#define M48T59_FLAGS 0x1ff0
+#define M48T59_FLAGS_WDT 0x80 /* watchdog timer expired */
+#define M48T59_FLAGS_AF 0x40 /* alarm */
+#define M48T59_FLAGS_BF 0x10 /* low battery */
+
+#define M48T59_NVRAM_SIZE 0x1ff0
+
+struct m48t59_plat_data {
+ /* The method to access M48T59 registers,
+ * NOTE: The 'ofs' should be 0x00~0x1fff
+ */
+ void (*write_byte)(struct device *dev, u32 ofs, u8 val);
+ unsigned char (*read_byte)(struct device *dev, u32 ofs);
+};
+
+#endif /* _LINUX_RTC_M48T59_H_ */