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61 lines
1.7 KiB
61 lines
1.7 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* include/linux/rtc/m48t59.h |
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* |
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* Definitions for the platform data of m48t59 RTC chip driver. |
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* |
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* Copyright (c) 2007 Wind River Systems, Inc. |
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* |
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* Mark Zhan <[email protected]> |
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*/ |
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#ifndef _LINUX_RTC_M48T59_H_ |
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#define _LINUX_RTC_M48T59_H_ |
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/* |
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* M48T59 Register Offset |
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*/ |
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#define M48T59_YEAR 0xf |
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#define M48T59_MONTH 0xe |
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#define M48T59_MDAY 0xd /* Day of Month */ |
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#define M48T59_WDAY 0xc /* Day of Week */ |
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#define M48T59_WDAY_CB 0x20 /* Century Bit */ |
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#define M48T59_WDAY_CEB 0x10 /* Century Enable Bit */ |
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#define M48T59_HOUR 0xb |
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#define M48T59_MIN 0xa |
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#define M48T59_SEC 0x9 |
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#define M48T59_CNTL 0x8 |
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#define M48T59_CNTL_READ 0x40 |
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#define M48T59_CNTL_WRITE 0x80 |
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#define M48T59_WATCHDOG 0x7 |
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#define M48T59_INTR 0x6 |
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#define M48T59_INTR_AFE 0x80 /* Alarm Interrupt Enable */ |
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#define M48T59_INTR_ABE 0x20 |
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#define M48T59_ALARM_DATE 0x5 |
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#define M48T59_ALARM_HOUR 0x4 |
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#define M48T59_ALARM_MIN 0x3 |
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#define M48T59_ALARM_SEC 0x2 |
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#define M48T59_UNUSED 0x1 |
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#define M48T59_FLAGS 0x0 |
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#define M48T59_FLAGS_WDT 0x80 /* watchdog timer expired */ |
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#define M48T59_FLAGS_AF 0x40 /* alarm */ |
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#define M48T59_FLAGS_BF 0x10 /* low battery */ |
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#define M48T59RTC_TYPE_M48T59 0 /* to keep compatibility */ |
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#define M48T59RTC_TYPE_M48T02 1 |
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#define M48T59RTC_TYPE_M48T08 2 |
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struct m48t59_plat_data { |
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/* The method to access M48T59 registers */ |
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void (*write_byte)(struct device *dev, u32 ofs, u8 val); |
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unsigned char (*read_byte)(struct device *dev, u32 ofs); |
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int type; /* RTC model */ |
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/* ioaddr mapped externally */ |
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void __iomem *ioaddr; |
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/* offset to RTC registers, automatically set according to the type */ |
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unsigned int offset; |
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}; |
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#endif /* _LINUX_RTC_M48T59_H_ */
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