1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright (C) 2014-2019 MediaTek Inc. 4 * 5 * Author: Tianping.Fang <[email protected]> 6 * Sean Wang <[email protected]> 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 0x003c 22 23 #define RTC_IRQ_STA 0x0002 24 #define RTC_IRQ_STA_AL BIT(0) 25 #define RTC_IRQ_STA_LP BIT(3) 26 27 #define RTC_IRQ_EN 0x0004 28 #define RTC_IRQ_EN_AL BIT(0) 29 #define RTC_IRQ_EN_ONESHOT BIT(2) 30 #define RTC_IRQ_EN_LP BIT(3) 31 #define RTC_IRQ_EN_ONESHOT_AL (RTC_IRQ_EN_ONESHOT | RTC_IRQ_EN_AL) 32 33 #define RTC_AL_MASK 0x0008 34 #define RTC_AL_MASK_DOW BIT(4) 35 36 #define RTC_TC_SEC 0x000a 37 /* Min, Hour, Dom... register offset to RTC_TC_SEC */ 38 #define RTC_OFFSET_SEC 0 39 #define RTC_OFFSET_MIN 1 40 #define RTC_OFFSET_HOUR 2 41 #define RTC_OFFSET_DOM 3 42 #define RTC_OFFSET_DOW 4 43 #define RTC_OFFSET_MTH 5 44 #define RTC_OFFSET_YEAR 6 45 #define RTC_OFFSET_COUNT 7 46 47 #define RTC_AL_SEC 0x0018 48 49 #define RTC_PDN2 0x002e 50 #define RTC_PDN2_PWRON_ALARM BIT(4) 51 52 #define RTC_MIN_YEAR 1968 53 #define RTC_BASE_YEAR 1900 54 #define RTC_NUM_YEARS 128 55 #define RTC_MIN_YEAR_OFFSET (RTC_MIN_YEAR - RTC_BASE_YEAR) 56 57 #define MTK_RTC_POLL_DELAY_US 10 58 #define MTK_RTC_POLL_TIMEOUT (jiffies_to_usecs(HZ)) 59 60 struct mt6397_rtc { 61 struct device *dev; 62 struct rtc_device *rtc_dev; 63 64 /* Protect register access from multiple tasks */ 65 struct mutex lock; 66 struct regmap *regmap; 67 int irq; 68 u32 addr_base; 69 }; 70 71 #endif /* _LINUX_MFD_MT6397_RTC_H_ */ 72