cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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rtc.h (2451B)

      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
     71struct mtk_rtc_data {
     72	u32                     wrtgr;
     73};
     74
     75struct 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_ */