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