add REDIRECT

hc

2024-10-09 05e59e5fb0064c97a1c10921ecd549f2d4a58565

 kernel/include/uapi/linux/rtc.h
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@@ -12,6 +12,9 @@
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 #ifndef _UAPI_LINUX_RTC_H_
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 #define _UAPI_LINUX_RTC_H_
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+#include <linux/const.h>
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+#include <linux/ioctl.h>
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+
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 /*
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  * The struct used to pass data via the following ioctl. Similar to the
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  * struct tm in <time.h>, but it needs to be here so that the kernel
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@@ -92,7 +95,13 @@
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 #define RTC_PLL_GET	_IOR('p', 0x11, struct rtc_pll_info)  /* Get PLL correction */
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 #define RTC_PLL_SET	_IOW('p', 0x12, struct rtc_pll_info)  /* Set PLL correction */
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-#define RTC_VL_READ	_IOR('p', 0x13, int)	/* Voltage low detector */
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+#define RTC_VL_DATA_INVALID	_BITUL(0) /* Voltage too low, RTC data is invalid */
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+#define RTC_VL_BACKUP_LOW	_BITUL(1) /* Backup voltage is low */
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+#define RTC_VL_BACKUP_EMPTY	_BITUL(2) /* Backup empty or not present */
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+#define RTC_VL_ACCURACY_LOW	_BITUL(3) /* Voltage is low, RTC accuracy is reduced */
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+#define RTC_VL_BACKUP_SWITCH	_BITUL(4) /* Backup switchover happened */
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+
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+#define RTC_VL_READ	_IOR('p', 0x13, unsigned int)	/* Voltage low detection */
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 #define RTC_VL_CLR	_IO('p', 0x14)		/* Clear voltage low information */
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 /* interrupt flags */