1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Machine dependent access functions for RTC registers. 4*4882a593Smuzhiyun */ 5*4882a593Smuzhiyun #ifndef _ASM_MC146818RTC_H 6*4882a593Smuzhiyun #define _ASM_MC146818RTC_H 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #ifdef CONFIG_ATARI 10*4882a593Smuzhiyun /* RTC in Atari machines */ 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun #include <asm/atarihw.h> 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun #define ATARI_RTC_PORT(x) (TT_RTC_BAS + 2*(x)) 15*4882a593Smuzhiyun #define RTC_ALWAYS_BCD 0 16*4882a593Smuzhiyun 17*4882a593Smuzhiyun #define CMOS_READ(addr) ({ \ 18*4882a593Smuzhiyun atari_outb_p((addr), ATARI_RTC_PORT(0)); \ 19*4882a593Smuzhiyun atari_inb_p(ATARI_RTC_PORT(1)); \ 20*4882a593Smuzhiyun }) 21*4882a593Smuzhiyun #define CMOS_WRITE(val, addr) ({ \ 22*4882a593Smuzhiyun atari_outb_p((addr), ATARI_RTC_PORT(0)); \ 23*4882a593Smuzhiyun atari_outb_p((val), ATARI_RTC_PORT(1)); \ 24*4882a593Smuzhiyun }) 25*4882a593Smuzhiyun #endif /* CONFIG_ATARI */ 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun #endif /* _ASM_MC146818RTC_H */ 28