Something went wrong. Try again.
(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
Something went wrong. Try again.
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153/* 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 <eranian@hpl.hp.com> */#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 { int tm_sec; int tm_min; int tm_hour; int tm_mday; int tm_mon; int tm_year; int tm_wday; int tm_yday; int tm_isdst;};
/* * This data structure is inspired by the EFI (v0.92) wakeup * alarm API. */struct rtc_wkalrm { unsigned char enabled; /* 0 = alarm disabled, 1 = alarm enabled */ unsigned char pending; /* 0 = alarm not pending, 1 = alarm pending */ struct rtc_time time; /* time the alarm is set to */};
/* * 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 { int pll_ctrl; /* placeholder for fancier control */ int pll_value; /* get/set correction value */ int pll_max; /* max +ve (faster) adjustment value */ int pll_min; /* max -ve (slower) adjustment value */ int pll_posmult; /* factor for +ve correction */ int pll_negmult; /* factor for -ve correction */ long pll_clock; /* base PLL frequency */};
struct rtc_param { __u64 param; union { __u64 uvalue; __s64 svalue; __u64 ptr; }; __u32 index; __u32 __pad;};
/* * ioctl calls that are permitted to the /dev/rtc interface, if * any of the RTC drivers are enabled. */
#define RTC_AIE_ON _IO('p', 0x01) /* Alarm int. enable on */#define RTC_AIE_OFF _IO('p', 0x02) /* ... off */#define RTC_UIE_ON _IO('p', 0x03) /* Update int. enable on */#define RTC_UIE_OFF _IO('p', 0x04) /* ... off */#define RTC_PIE_ON _IO('p', 0x05) /* Periodic int. enable on */#define RTC_PIE_OFF _IO('p', 0x06) /* ... off */#define RTC_WIE_ON _IO('p', 0x0f) /* Watchdog int. enable on */#define RTC_WIE_OFF _IO('p', 0x10) /* ... off */
#define RTC_ALM_SET _IOW('p', 0x07, struct rtc_time) /* Set alarm time */#define RTC_ALM_READ _IOR('p', 0x08, struct rtc_time) /* Read alarm time */#define RTC_RD_TIME _IOR('p', 0x09, struct rtc_time) /* Read RTC time */#define RTC_SET_TIME _IOW('p', 0x0a, struct rtc_time) /* Set RTC time */#define RTC_IRQP_READ _IOR('p', 0x0b, unsigned long) /* Read IRQ rate */#define RTC_IRQP_SET _IOW('p', 0x0c, unsigned long) /* Set IRQ rate */#define RTC_EPOCH_READ _IOR('p', 0x0d, unsigned long) /* Read epoch */#define RTC_EPOCH_SET _IOW('p', 0x0e, unsigned long) /* Set epoch */
#define RTC_WKALM_SET _IOW('p', 0x0f, struct rtc_wkalrm)/* Set wakeup alarm*/#define RTC_WKALM_RD _IOR('p', 0x10, struct rtc_wkalrm)/* Get wakeup alarm*/
#define RTC_PLL_GET _IOR('p', 0x11, struct rtc_pll_info) /* Get PLL correction */#define RTC_PLL_SET _IOW('p', 0x12, struct rtc_pll_info) /* Set PLL correction */
#define RTC_PARAM_GET _IOW('p', 0x13, struct rtc_param) /* Get parameter */#define RTC_PARAM_SET _IOW('p', 0x14, struct rtc_param) /* Set parameter */
#define RTC_VL_DATA_INVALID _BITUL(0) /* Voltage too low, RTC data is invalid */#define RTC_VL_BACKUP_LOW _BITUL(1) /* Backup voltage is low */#define RTC_VL_BACKUP_EMPTY _BITUL(2) /* Backup empty or not present */#define RTC_VL_ACCURACY_LOW _BITUL(3) /* Voltage is low, RTC accuracy is reduced */#define RTC_VL_BACKUP_SWITCH _BITUL(4) /* Backup switchover happened */
#define RTC_VL_READ _IOR('p', 0x13, unsigned int) /* Voltage low detection */#define RTC_VL_CLR _IO('p', 0x14) /* Clear voltage low information */
/* interrupt flags */#define RTC_IRQF 0x80 /* Any of the following is active */#define RTC_PF 0x40 /* Periodic interrupt */#define RTC_AF 0x20 /* Alarm interrupt */#define RTC_UF 0x10 /* Update interrupt for 1Hz RTC */
/* feature list */#define RTC_FEATURE_ALARM 0#define RTC_FEATURE_ALARM_RES_MINUTE 1#define RTC_FEATURE_NEED_WEEK_DAY 2#define RTC_FEATURE_ALARM_RES_2S 3#define RTC_FEATURE_UPDATE_INTERRUPT 4#define RTC_FEATURE_CORRECTION 5#define RTC_FEATURE_BACKUP_SWITCH_MODE 6#define RTC_FEATURE_ALARM_WAKEUP_ONLY 7#define RTC_FEATURE_CNT 8
/* parameter list */#define RTC_PARAM_FEATURES 0#define RTC_PARAM_CORRECTION 1#define RTC_PARAM_BACKUP_SWITCH_MODE 2
#define RTC_BSM_DISABLED 0#define RTC_BSM_DIRECT 1#define RTC_BSM_LEVEL 2#define RTC_BSM_STANDBY 3
#define RTC_MAX_FREQ 8192
#endif /* _UAPI_LINUX_RTC_H_ */