1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Machine dependent access functions for RTC registers. 4 */ 5 #ifndef __ASM_SPARC64_MC146818RTC_H 6 #define __ASM_SPARC64_MC146818RTC_H 7 8 #include <asm/io.h> 9 10 #ifndef RTC_PORT 11 extern unsigned long cmos_regs; 12 #define RTC_PORT(x) (cmos_regs + (x)) 13 #define RTC_ALWAYS_BCD 0 14 #endif 15 16 /* 17 * The yet supported machines all access the RTC index register via 18 * an ISA port access but the way to access the date register differs ... 19 */ 20 #define CMOS_READ(addr) ({ \ 21 outb_p((addr),RTC_PORT(0)); \ 22 inb_p(RTC_PORT(1)); \ 23 }) 24 #define CMOS_WRITE(val, addr) ({ \ 25 outb_p((addr),RTC_PORT(0)); \ 26 outb_p((val),RTC_PORT(1)); \ 27 }) 28 29 #endif /* __ASM_SPARC64_MC146818RTC_H */ 30