/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* * Generic RTC interface. * This version contains the part of the user interface to the Real Time Clock * service. It is used with both the legacy mc146818 and also EFI * Struct rtc_time and first 12 ioctl by Paul Gortmaker, 1996 - separated out * from <linux/mc146818rtc.h> to this file for 2.4 kernels. * * Copyright (C) 1999 Hewlett-Packard Co. * Copyright (C) 1999 Stephane Eranian <[email protected]> */ #ifndef _UAPI_LINUX_RTC_H_ #define _UAPI_LINUX_RTC_H_ #include <linux/const.h> #include <linux/ioctl.h> #include <linux/types.h> /* * The struct used to pass data via the following ioctl. Similar to the * struct tm in <time.h>, but it needs to be here so that the kernel * source is self contained, allowing cross-compiles, etc. etc. */ struct rtc_time { … }; /* * This data structure is inspired by the EFI (v0.92) wakeup * alarm API. */ struct rtc_wkalrm { … }; /* * Data structure to control PLL correction some better RTC feature * pll_value is used to get or set current value of correction, * the rest of the struct is used to query HW capabilities. * This is modeled after the RTC used in Q40/Q60 computers but * should be sufficiently flexible for other devices * * +ve pll_value means clock will run faster by * pll_value*pll_posmult/pll_clock * -ve pll_value means clock will run slower by * pll_value*pll_negmult/pll_clock */ struct rtc_pll_info { … }; struct rtc_param { … }; /* * ioctl calls that are permitted to the /dev/rtc interface, if * any of the RTC drivers are enabled. */ #define RTC_AIE_ON … #define RTC_AIE_OFF … #define RTC_UIE_ON … #define RTC_UIE_OFF … #define RTC_PIE_ON … #define RTC_PIE_OFF … #define RTC_WIE_ON … #define RTC_WIE_OFF … #define RTC_ALM_SET … #define RTC_ALM_READ … #define RTC_RD_TIME … #define RTC_SET_TIME … #define RTC_IRQP_READ … #define RTC_IRQP_SET … #define RTC_EPOCH_READ … #define RTC_EPOCH_SET … #define RTC_WKALM_SET … #define RTC_WKALM_RD … #define RTC_PLL_GET … #define RTC_PLL_SET … #define RTC_PARAM_GET … #define RTC_PARAM_SET … #define RTC_VL_DATA_INVALID … #define RTC_VL_BACKUP_LOW … #define RTC_VL_BACKUP_EMPTY … #define RTC_VL_ACCURACY_LOW … #define RTC_VL_BACKUP_SWITCH … #define RTC_VL_READ … #define RTC_VL_CLR … /* interrupt flags */ #define RTC_IRQF … #define RTC_PF … #define RTC_AF … #define RTC_UF … /* feature list */ #define RTC_FEATURE_ALARM … #define RTC_FEATURE_ALARM_RES_MINUTE … #define RTC_FEATURE_NEED_WEEK_DAY … #define RTC_FEATURE_ALARM_RES_2S … #define RTC_FEATURE_UPDATE_INTERRUPT … #define RTC_FEATURE_CORRECTION … #define RTC_FEATURE_BACKUP_SWITCH_MODE … #define RTC_FEATURE_ALARM_WAKEUP_ONLY … #define RTC_FEATURE_CNT … /* parameter list */ #define RTC_PARAM_FEATURES … #define RTC_PARAM_CORRECTION … #define RTC_PARAM_BACKUP_SWITCH_MODE … #define RTC_BSM_DISABLED … #define RTC_BSM_DIRECT … #define RTC_BSM_LEVEL … #define RTC_BSM_STANDBY … #define RTC_MAX_FREQ … #endif /* _UAPI_LINUX_RTC_H_ */
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