1 /* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Machine dependent access functions for RTC registers. 7 */ 8 #ifndef __ASM_MC146818_TIME_H 9 #define __ASM_MC146818_TIME_H 10 11 #include <linux/mc146818rtc.h> 12 #include <linux/time.h> 13 14 #ifdef CONFIG_RTC_MC146818_LIB 15 static inline time64_t mc146818_get_cmos_time(void) 16 { 17 struct rtc_time tm; 18 19 if (mc146818_get_time(&tm, 1000)) { 20 pr_err("Unable to read current time from RTC\n"); 21 return 0; 22 } 23 24 return rtc_tm_to_time64(&tm); 25 } 26 #endif /* CONFIG_RTC_MC146818_LIB */ 27 28 #endif /* __ASM_MC146818_TIME_H */ 29