rtc.h

 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_ */