Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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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/* Min, Hour, Dom... register offset to RTC_TC_SEC */
40#define RTC_OFFSET_SEC 0
41#define RTC_OFFSET_MIN 1
42#define RTC_OFFSET_HOUR 2
43#define RTC_OFFSET_DOM 3
44#define RTC_OFFSET_DOW 4
45#define RTC_OFFSET_MTH 5
46#define RTC_OFFSET_YEAR 6
47#define RTC_OFFSET_COUNT 7
48
49#define RTC_AL_SEC 0x0018
50
51#define RTC_AL_SEC_MASK 0x003f
52#define RTC_AL_MIN_MASK 0x003f
53#define RTC_AL_HOU_MASK 0x001f
54#define RTC_AL_DOM_MASK 0x001f
55#define RTC_AL_DOW_MASK 0x0007
56#define RTC_AL_MTH_MASK 0x000f
57#define RTC_AL_YEA_MASK 0x007f
58
59#define RTC_PDN2 0x002e
60#define RTC_PDN2_PWRON_ALARM BIT(4)
61
62#define RTC_MIN_YEAR 1968
63#define RTC_BASE_YEAR 1900
64#define RTC_NUM_YEARS 128
65#define RTC_MIN_YEAR_OFFSET (RTC_MIN_YEAR - RTC_BASE_YEAR)
66
67#define MTK_RTC_POLL_DELAY_US 10
68#define MTK_RTC_POLL_TIMEOUT (jiffies_to_usecs(HZ))
69
70struct mtk_rtc_data {
71 u32 wrtgr;
72};
73
74struct mt6397_rtc {
75 struct device *dev;
76 struct rtc_device *rtc_dev;
77
78 /* Protect register access from multiple tasks */
79 struct mutex lock;
80 struct regmap *regmap;
81 int irq;
82 u32 addr_base;
83 const struct mtk_rtc_data *data;
84};
85
86#endif /* _LINUX_MFD_MT6397_RTC_H_ */