| Kyle Swenson | 8d8f654 | 2021-03-15 11:02:55 -0600 | [diff] [blame^] | 1 | /* include/asm-m68k/rtc.h |
| 2 | * |
| 3 | * Copyright Richard Zidlicky |
| 4 | * implementation details for genrtc/q40rtc driver |
| 5 | */ |
| 6 | /* permission is hereby granted to copy, modify and redistribute this code |
| 7 | * in terms of the GNU Library General Public License, Version 2 or later, |
| 8 | * at your option. |
| 9 | */ |
| 10 | |
| 11 | #ifndef _ASM_RTC_H |
| 12 | #define _ASM_RTC_H |
| 13 | |
| 14 | #ifdef __KERNEL__ |
| 15 | |
| 16 | #include <linux/rtc.h> |
| 17 | #include <asm/errno.h> |
| 18 | #include <asm/machdep.h> |
| 19 | |
| 20 | #define RTC_PIE 0x40 /* periodic interrupt enable */ |
| 21 | #define RTC_AIE 0x20 /* alarm interrupt enable */ |
| 22 | #define RTC_UIE 0x10 /* update-finished interrupt enable */ |
| 23 | |
| 24 | /* some dummy definitions */ |
| 25 | #define RTC_BATT_BAD 0x100 /* battery bad */ |
| 26 | #define RTC_SQWE 0x08 /* enable square-wave output */ |
| 27 | #define RTC_DM_BINARY 0x04 /* all time/date values are BCD if clear */ |
| 28 | #define RTC_24H 0x02 /* 24 hour mode - else hours bit 7 means pm */ |
| 29 | #define RTC_DST_EN 0x01 /* auto switch DST - works f. USA only */ |
| 30 | |
| 31 | static inline unsigned int get_rtc_time(struct rtc_time *time) |
| 32 | { |
| 33 | /* |
| 34 | * Only the values that we read from the RTC are set. We leave |
| 35 | * tm_wday, tm_yday and tm_isdst untouched. Even though the |
| 36 | * RTC has RTC_DAY_OF_WEEK, we ignore it, as it is only updated |
| 37 | * by the RTC when initially set to a non-zero value. |
| 38 | */ |
| 39 | if (mach_hwclk) |
| 40 | mach_hwclk(0, time); |
| 41 | return RTC_24H; |
| 42 | } |
| 43 | |
| 44 | static inline int set_rtc_time(struct rtc_time *time) |
| 45 | { |
| 46 | if (mach_hwclk) |
| 47 | return mach_hwclk(1, time); |
| 48 | return -EINVAL; |
| 49 | } |
| 50 | |
| 51 | static inline unsigned int get_rtc_ss(void) |
| 52 | { |
| 53 | if (mach_get_ss) |
| 54 | return mach_get_ss(); |
| 55 | else{ |
| 56 | struct rtc_time h; |
| 57 | |
| 58 | get_rtc_time(&h); |
| 59 | return h.tm_sec; |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | static inline int get_rtc_pll(struct rtc_pll_info *pll) |
| 64 | { |
| 65 | if (mach_get_rtc_pll) |
| 66 | return mach_get_rtc_pll(pll); |
| 67 | else |
| 68 | return -EINVAL; |
| 69 | } |
| 70 | static inline int set_rtc_pll(struct rtc_pll_info *pll) |
| 71 | { |
| 72 | if (mach_set_rtc_pll) |
| 73 | return mach_set_rtc_pll(pll); |
| 74 | else |
| 75 | return -EINVAL; |
| 76 | } |
| 77 | #endif /* __KERNEL__ */ |
| 78 | |
| 79 | #endif /* _ASM__RTC_H */ |