mfd/mt6397/rtc.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 /*
0003  * Copyright (C) 2014-2019 MediaTek Inc.
0004  *
0005  * Author: Tianping.Fang <tianping.fang@mediatek.com>
0006  *        Sean Wang <sean.wang@mediatek.com>
0007  */
0008
0009 #ifndef _LINUX_MFD_MT6397_RTC_H_
0010 #define _LINUX_MFD_MT6397_RTC_H_
0011
0012 #include <linux/jiffies.h>
0013 #include <linux/mutex.h>
0014 #include <linux/regmap.h>
0015 #include <linux/rtc.h>
0016
0017 #define RTC_BBPU               0x0000
0018 #define RTC_BBPU_CBUSY         BIT(6)
0019 #define RTC_BBPU_KEY            (0x43 << 8)
0020
0021 #define RTC_WRTGR_MT6358       0x003a
0022 #define RTC_WRTGR_MT6397       0x003c
0023 #define RTC_WRTGR_MT6323       RTC_WRTGR_MT6397
0024
0025 #define RTC_IRQ_STA            0x0002
0026 #define RTC_IRQ_STA_AL         BIT(0)
0027 #define RTC_IRQ_STA_LP         BIT(3)
0028
0029 #define RTC_IRQ_EN             0x0004
0030 #define RTC_IRQ_EN_AL          BIT(0)
0031 #define RTC_IRQ_EN_ONESHOT     BIT(2)
0032 #define RTC_IRQ_EN_LP          BIT(3)
0033 #define RTC_IRQ_EN_ONESHOT_AL  (RTC_IRQ_EN_ONESHOT | RTC_IRQ_EN_AL)
0034
0035 #define RTC_AL_MASK            0x0008
0036 #define RTC_AL_MASK_DOW                BIT(4)
0037
0038 #define RTC_TC_SEC             0x000a
0039 #define RTC_TC_MTH_MASK        0x000f
0040 /* Min, Hour, Dom... register offset to RTC_TC_SEC */
0041 #define RTC_OFFSET_SEC         0
0042 #define RTC_OFFSET_MIN         1
0043 #define RTC_OFFSET_HOUR                2
0044 #define RTC_OFFSET_DOM         3
0045 #define RTC_OFFSET_DOW         4
0046 #define RTC_OFFSET_MTH         5
0047 #define RTC_OFFSET_YEAR                6
0048 #define RTC_OFFSET_COUNT       7
0049
0050 #define RTC_AL_SEC             0x0018
0051
0052 #define RTC_AL_SEC_MASK        0x003f
0053 #define RTC_AL_MIN_MASK        0x003f
0054 #define RTC_AL_HOU_MASK        0x001f
0055 #define RTC_AL_DOM_MASK        0x001f
0056 #define RTC_AL_DOW_MASK        0x0007
0057 #define RTC_AL_MTH_MASK        0x000f
0058 #define RTC_AL_YEA_MASK        0x007f
0059
0060 #define RTC_PDN2               0x002e
0061 #define RTC_PDN2_PWRON_ALARM   BIT(4)
0062
0063 #define RTC_MIN_YEAR           1968
0064 #define RTC_BASE_YEAR          1900
0065 #define RTC_NUM_YEARS          128
0066 #define RTC_MIN_YEAR_OFFSET    (RTC_MIN_YEAR - RTC_BASE_YEAR)
0067
0068 #define MTK_RTC_POLL_DELAY_US  10
0069 #define MTK_RTC_POLL_TIMEOUT   (jiffies_to_usecs(HZ))
0070
0071 struct mtk_rtc_data {
0072     u32                     wrtgr;
0073 };
0074
0075 struct mt6397_rtc {
0076     struct rtc_device       *rtc_dev;
0077
0078     /* Protect register access from multiple tasks */
0079     struct mutex            lock;
0080     struct regmap           *regmap;
0081     int                     irq;
0082     u32                     addr_base;
0083     const struct mtk_rtc_data *data;
0084 };
0085
0086 #endif /* _LINUX_MFD_MT6397_RTC_H_ */