4024ce5e0f
Git patch 52dfa9a64c
[PATCH] move rtc_interrupt() prototype to rtc.h
broke strace(1) builds. The below moves the kernel-only additions lower,
under the already provided #ifdef __KERNEL__ statement.
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
111 lines
3.9 KiB
C
111 lines
3.9 KiB
C
/*
|
|
* 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 _LINUX_RTC_H_
|
|
#define _LINUX_RTC_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 disable, 1 = alarm disabled */
|
|
unsigned char pending; /* 0 = alarm pending, 1 = alarm not 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 */
|
|
};
|
|
|
|
/*
|
|
* 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 */
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#include <linux/interrupt.h>
|
|
|
|
typedef struct rtc_task {
|
|
void (*func)(void *private_data);
|
|
void *private_data;
|
|
} rtc_task_t;
|
|
|
|
int rtc_register(rtc_task_t *task);
|
|
int rtc_unregister(rtc_task_t *task);
|
|
int rtc_control(rtc_task_t *t, unsigned int cmd, unsigned long arg);
|
|
void rtc_get_rtc_time(struct rtc_time *rtc_tm);
|
|
irqreturn_t rtc_interrupt(int irq, void *dev_id, struct pt_regs *regs);
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* _LINUX_RTC_H_ */
|