rtc: make definitions in include/uapi/linux/rtc.h actually useful for user space (b0efe028) · Commits · 戴 / test

include/uapi/linux/rtc.h

+7 −4

Original line number	Diff line number	Diff line
		@@ -12,6 +12,9 @@
		#ifndef _UAPI_LINUX_RTC_H_
		#define _UAPI_LINUX_RTC_H_

		#include <linux/const.h>
		#include <linux/ioctl.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
		@@ -92,10 +95,10 @@ struct rtc_pll_info {
		#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_VL_DATA_INVALID BIT(0) /* Voltage too low, RTC data is invalid */
		#define RTC_VL_BACKUP_LOW BIT(1) /* Backup voltage is low */
		#define RTC_VL_BACKUP_EMPTY BIT(2) /* Backup empty or not present */
		#define RTC_VL_ACCURACY_LOW BIT(3) /* Voltage is low, RTC accuracy is reduced */
		#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_READ _IOR('p', 0x13, unsigned int) /* Voltage low detection */
		#define RTC_VL_CLR _IO('p', 0x14) /* Clear voltage low information */