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 RTC_MIN_YEAR 1968 |
64 | #define RTC_BASE_YEAR 1900 |
65 | #define RTC_NUM_YEARS 128 |
66 | #define RTC_MIN_YEAR_OFFSET (RTC_MIN_YEAR - RTC_BASE_YEAR) |
67 | |
68 | #define MTK_RTC_POLL_DELAY_US 10 |
69 | #define MTK_RTC_POLL_TIMEOUT (jiffies_to_usecs(HZ)) |
70 | |
71 | struct mtk_rtc_data { |
72 | u32 wrtgr; |
73 | }; |
74 | |
75 | struct mt6397_rtc { |
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_ */ |
87 | |