mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 17:30:02 +00:00
![Thomas Gleixner](/assets/img/avatar_default.png)
Based on 2 normalized pattern(s): 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 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 # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
61 lines
1.7 KiB
C
61 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* 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>
|
|
*/
|
|
|
|
#ifndef _LINUX_RTC_M48T59_H_
|
|
#define _LINUX_RTC_M48T59_H_
|
|
|
|
/*
|
|
* M48T59 Register Offset
|
|
*/
|
|
#define M48T59_YEAR 0xf
|
|
#define M48T59_MONTH 0xe
|
|
#define M48T59_MDAY 0xd /* Day of Month */
|
|
#define M48T59_WDAY 0xc /* Day of Week */
|
|
#define M48T59_WDAY_CB 0x20 /* Century Bit */
|
|
#define M48T59_WDAY_CEB 0x10 /* Century Enable Bit */
|
|
#define M48T59_HOUR 0xb
|
|
#define M48T59_MIN 0xa
|
|
#define M48T59_SEC 0x9
|
|
#define M48T59_CNTL 0x8
|
|
#define M48T59_CNTL_READ 0x40
|
|
#define M48T59_CNTL_WRITE 0x80
|
|
#define M48T59_WATCHDOG 0x7
|
|
#define M48T59_INTR 0x6
|
|
#define M48T59_INTR_AFE 0x80 /* Alarm Interrupt Enable */
|
|
#define M48T59_INTR_ABE 0x20
|
|
#define M48T59_ALARM_DATE 0x5
|
|
#define M48T59_ALARM_HOUR 0x4
|
|
#define M48T59_ALARM_MIN 0x3
|
|
#define M48T59_ALARM_SEC 0x2
|
|
#define M48T59_UNUSED 0x1
|
|
#define M48T59_FLAGS 0x0
|
|
#define M48T59_FLAGS_WDT 0x80 /* watchdog timer expired */
|
|
#define M48T59_FLAGS_AF 0x40 /* alarm */
|
|
#define M48T59_FLAGS_BF 0x10 /* low battery */
|
|
|
|
#define M48T59RTC_TYPE_M48T59 0 /* to keep compatibility */
|
|
#define M48T59RTC_TYPE_M48T02 1
|
|
#define M48T59RTC_TYPE_M48T08 2
|
|
|
|
struct m48t59_plat_data {
|
|
/* The method to access M48T59 registers */
|
|
void (*write_byte)(struct device *dev, u32 ofs, u8 val);
|
|
unsigned char (*read_byte)(struct device *dev, u32 ofs);
|
|
|
|
int type; /* RTC model */
|
|
|
|
/* ioaddr mapped externally */
|
|
void __iomem *ioaddr;
|
|
/* offset to RTC registers, automatically set according to the type */
|
|
unsigned int offset;
|
|
};
|
|
|
|
#endif /* _LINUX_RTC_M48T59_H_ */
|