linux-imx

/*

 * A driver for the I2C members of the Abracon AB x8xx RTC family,

 * and compatible: AB 1805 and AB 0805

 *

 * Copyright 2014-2015 Macq S.A.

 *

 * Author: Philippe De Muyter <phdm@macqel.be>

 * Author: Alexandre Belloni <alexandre.belloni@bootlin.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.

 *

 */

​

#include <linux/bcd.h>

#include <linux/i2c.h>

#include <linux/module.h>

#include <linux/rtc.h>

#include <linux/watchdog.h>

​

#define ABX8XX_REG_HTH      0x00

#define ABX8XX_REG_SC       0x01

#define ABX8XX_REG_MN       0x02

#define ABX8XX_REG_HR       0x03

#define ABX8XX_REG_DA       0x04

#define ABX8XX_REG_MO       0x05

#define ABX8XX_REG_YR       0x06

#define ABX8XX_REG_WD       0x07

​

#define ABX8XX_REG_AHTH     0x08

#define ABX8XX_REG_ASC      0x09

#define ABX8XX_REG_AMN      0x0a

#define ABX8XX_REG_AHR      0x0b

#define ABX8XX_REG_ADA      0x0c

#define ABX8XX_REG_AMO      0x0d

#define ABX8XX_REG_AWD      0x0e

​

#define ABX8XX_REG_STATUS   0x0f

#define ABX8XX_STATUS_AF    BIT(2)

#define ABX8XX_STATUS_BLF   BIT(4)

#define ABX8XX_STATUS_WDT   BIT(6)

​

#define ABX8XX_REG_CTRL1    0x10

#define ABX8XX_CTRL_WRITE   BIT(0)

#define ABX8XX_CTRL_ARST    BIT(2)

#define ABX8XX_CTRL_12_24   BIT(6)

​

#define ABX8XX_REG_CTRL2    0x11

#define ABX8XX_CTRL2_RSVD   BIT(5)

​

#define ABX8XX_REG_IRQ      0x12

#define ABX8XX_IRQ_AIE      BIT(2)

#define ABX8XX_IRQ_IM_1_4   (0x3 << 5)

​

#define ABX8XX_REG_CD_TIMER_CTL 0x18

​

#define ABX8XX_REG_OSC      0x1c

#define ABX8XX_OSC_FOS      BIT(3)

#define ABX8XX_OSC_BOS      BIT(4)

#define ABX8XX_OSC_ACAL_512 BIT(5)

#define ABX8XX_OSC_ACAL_1024    BIT(6)

​