1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright (C) 2014-2019 MediaTek Inc.
4 *
5 * Author: Tianping.Fang <tianping.fang@mediatek.com>
6 * Sean Wang <sean.wang@mediatek.com>
7 */
8
9#ifndef _LINUX_MFD_MT6397_RTC_H_
10#define _LINUX_MFD_MT6397_RTC_H_
11
12#include <linux/jiffies.h>
13#include <linux/mutex.h>
14#include <linux/regmap.h>
15#include <linux/rtc.h>
16
17#define RTC_BBPU 0x0000
18#define RTC_BBPU_CBUSY BIT(6)
19#define RTC_BBPU_KEY (0x43 << 8)
20
21#define RTC_WRTGR_MT6358 0x003a
22#define RTC_WRTGR_MT6397 0x003c
23#define RTC_WRTGR_MT6323 RTC_WRTGR_MT6397
24
25#define RTC_IRQ_STA 0x0002
26#define RTC_IRQ_STA_AL BIT(0)
27#define RTC_IRQ_STA_LP BIT(3)
28
29#define RTC_IRQ_EN 0x0004
30#define RTC_IRQ_EN_AL BIT(0)
31#define RTC_IRQ_EN_ONESHOT BIT(2)
32#define RTC_IRQ_EN_LP BIT(3)
33#define RTC_IRQ_EN_ONESHOT_AL (RTC_IRQ_EN_ONESHOT | RTC_IRQ_EN_AL)
34
35#define RTC_AL_MASK 0x0008
36#define RTC_AL_MASK_DOW BIT(4)
37
38#define RTC_TC_SEC 0x000a
39#define RTC_TC_MTH_MASK 0x000f
40/* Min, Hour, Dom... register offset to RTC_TC_SEC */
41#define RTC_OFFSET_SEC 0
42#define RTC_OFFSET_MIN 1
43#define RTC_OFFSET_HOUR 2
44#define RTC_OFFSET_DOM 3
45#define RTC_OFFSET_DOW 4
46#define RTC_OFFSET_MTH 5
47#define RTC_OFFSET_YEAR 6
48#define RTC_OFFSET_COUNT 7
49
50#define RTC_AL_SEC 0x0018
51
52#define RTC_AL_SEC_MASK 0x003f
53#define RTC_AL_MIN_MASK 0x003f
54#define RTC_AL_HOU_MASK 0x001f
55#define RTC_AL_DOM_MASK 0x001f
56#define RTC_AL_DOW_MASK 0x0007
57#define RTC_AL_MTH_MASK 0x000f
58#define RTC_AL_YEA_MASK 0x007f
59
60#define RTC_PDN2 0x002e
61#define RTC_PDN2_PWRON_ALARM BIT(4)
62
63#define MTK_RTC_POLL_DELAY_US 10
64#define MTK_RTC_POLL_TIMEOUT (jiffies_to_usecs(HZ))
65
66struct mtk_rtc_data {
67 u32 wrtgr;
68};
69
70struct mt6397_rtc {
71 struct rtc_device *rtc_dev;
72
73 /* Protect register access from multiple tasks */
74 struct mutex lock;
75 struct regmap *regmap;
76 int irq;
77 u32 addr_base;
78 const struct mtk_rtc_data *data;
79};
80
81#endif /* _LINUX_MFD_MT6397_RTC_H_ */
82

source code of linux/include/linux/mfd/mt6397/rtc.h