linux-imx

/*

 * Driver for the Epson RTC module RX-8010 SJ

 *

 * Copyright(C) Timesys Corporation 2015

 * Copyright(C) General Electric Company 2015

 *

 * 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/bitops.h>

#include <linux/i2c.h>

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/rtc.h>

​

#define RX8010_SEC     0x10

#define RX8010_MIN     0x11

#define RX8010_HOUR    0x12

#define RX8010_WDAY    0x13

#define RX8010_MDAY    0x14

#define RX8010_MONTH   0x15

#define RX8010_YEAR    0x16

#define RX8010_RESV17  0x17

#define RX8010_ALMIN   0x18

#define RX8010_ALHOUR  0x19

#define RX8010_ALWDAY  0x1A

#define RX8010_TCOUNT0 0x1B

#define RX8010_TCOUNT1 0x1C

#define RX8010_EXT     0x1D

#define RX8010_FLAG    0x1E

#define RX8010_CTRL    0x1F

/* 0x20 to 0x2F are user registers */

#define RX8010_RESV30  0x30

#define RX8010_RESV31  0x31

#define RX8010_IRQ     0x32

​

#define RX8010_EXT_WADA  BIT(3)

​

#define RX8010_FLAG_VLF  BIT(1)

#define RX8010_FLAG_AF   BIT(3)

#define RX8010_FLAG_TF   BIT(4)

#define RX8010_FLAG_UF   BIT(5)

​

#define RX8010_CTRL_AIE  BIT(3)

#define RX8010_CTRL_UIE  BIT(5)

#define RX8010_CTRL_STOP BIT(6)

#define RX8010_CTRL_TEST BIT(7)

​

#define RX8010_ALARM_AE  BIT(7)

​

static const struct i2c_device_id rx8010_id[] = {

    { "rx8010", 0 },

    { }

};

MODULE_DEVICE_TABLE(i2c, rx8010_id);

​

static const struct of_device_id rx8010_of_match[] = {

    { .compatible = "epson,rx8010" },

    { }