| /* |
| * Machine dependent access functions for RTC registers. |
| */ |
| #ifndef _ASM_MC146818RTC_H |
| #define _ASM_MC146818RTC_H |
| |
| #include <linux/config.h> |
| #include <asm/atarihw.h> |
| |
| #ifdef CONFIG_ATARI |
| /* RTC in Atari machines */ |
| |
| #include <asm/atarihw.h> |
| #include <asm/atariints.h> |
| #include <asm/io.h> |
| #define RTC_HAS_IRQ (ATARIHW_PRESENT(TT_MFP)) |
| #define RTC_IRQ IRQ_TT_MFP_RTC |
| #define RTC_IRQ_FLAGS IRQ_TYPE_FAST |
| #define RTC_PORT(x) (TT_RTC_BAS + 2*(x)) |
| #define RTC_ALWAYS_BCD 0 /* TOS uses binary mode, Linux should be able |
| * to deal with both modes */ |
| |
| #define RTC_CHECK_DRIVER_INIT() (MACH_IS_ATARI && ATARIHW_PRESENT(TT_CLK)) |
| #define RTC_MACH_INIT() \ |
| do { \ |
| epoch = atari_rtc_year_offset + 1900; \ |
| if (RTC_HAS_IRQ) \ |
| /* select RTC int on H->L edge */ \ |
| tt_mfp.active_edge &= ~0x40; \ |
| } while(0) |
| #define RTC_MACH_EXIT() |
| |
| /* On Atari, the year was stored with base 1970 in old TOS versions (before |
| * 3.06). Later, Atari recognized that this broke leap year recognition, and |
| * changed the base to 1968. Medusa and Hades always use the new version. */ |
| #define RTC_CENTURY_SWITCH -1 /* no century switch */ |
| #define RTC_MINYEAR epoch |
| |
| #define CMOS_READ(addr) ({ \ |
| atari_outb_p((addr),RTC_PORT(0)); \ |
| atari_inb_p(RTC_PORT(1)); \ |
| }) |
| #define CMOS_WRITE(val, addr) ({ \ |
| atari_outb_p((addr),RTC_PORT(0)); \ |
| atari_outb_p((val),RTC_PORT(1)); \ |
| }) |
| #endif /* CONFIG_ATARI */ |
| |
| #endif /* _ASM_MC146818RTC_H */ |
