split some rtc funcs out of hwclock and into an rtc header/lib so that the new rtcwake applet as well as hwclock can utilize the same code

1 files changed, 73 insertions, 0 deletions

diff --git a/include/rtc_.h b/include/rtc_.h
new file mode 100644
index 0000000..50b60dd
--- /dev/null
+++ b/include/rtc_.h
@@ -0,0 +1,73 @@
+/*
+ * Common defines/structures/etc... for applets that need to work with the RTC.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef _BB_RTC_H_
+#define _BB_RTC_H_
+
+#include "libbb.h"
+
+extern int rtc_adjtime_is_utc(void);
+extern int rtc_xopen(const char *default_rtc, int flags);
+extern time_t rtc_read_time(int fd, int utc);
+
+
+
+/*
+ * Everything below this point has been copied from linux/rtc.h
+ * to eliminate the kernel header dependency
+ */
+
+struct linux_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;
+};
+
+struct linux_rtc_wkalrm {
+	unsigned char enabled;	/* 0 = alarm disabled, 1 = alarm enabled */
+	unsigned char pending;  /* 0 = alarm not pending, 1 = alarm pending */
+	struct linux_rtc_time time;	/* time the alarm is set to */
+};
+
+/*
+ * 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 linux_rtc_time) /* Set alarm time  */
+#define RTC_ALM_READ	_IOR('p', 0x08, struct linux_rtc_time) /* Read alarm time */
+#define RTC_RD_TIME	_IOR('p', 0x09, struct linux_rtc_time) /* Read RTC time   */
+#define RTC_SET_TIME	_IOW('p', 0x0a, struct linux_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 linux_rtc_wkalrm)/* Set wakeup alarm*/
+#define RTC_WKALM_RD	_IOR('p', 0x10, struct linux_rtc_wkalrm)/* Get wakeup alarm*/
+
+/* interrupt flags */
+#define RTC_IRQF 0x80 /* any of the following is active */
+#define RTC_PF 0x40
+#define RTC_AF 0x20
+#define RTC_UF 0x10
+
+#endif