projects / thirdparty / kernel / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 1da177e4 LT |
2 | /* |
| 3 | * linux/arch/m68k/sun3x/time.c | |
| 4 | * | |
| 5 | * Sun3x-specific time handling | |
| 6 | */ | |
| 7 | ||
| 8 | #include <linux/types.h> | |
| 9 | #include <linux/kd.h> | |
| 10 | #include <linux/init.h> | |
| 11 | #include <linux/sched.h> | |
| 12 | #include <linux/kernel_stat.h> | |
| 13 | #include <linux/interrupt.h> | |
| 14 | #include <linux/rtc.h> | |
| 15 | #include <linux/bcd.h> | |
| 16 | ||
| 17 | #include <asm/irq.h> | |
| 18 | #include <asm/io.h> | |
| 084b3600 | 19 | #include <asm/machdep.h> |
| 1da177e4 LT |
20 | #include <asm/traps.h> |
| 21 | #include <asm/sun3x.h> | |
| 22 | #include <asm/sun3ints.h> | |
| 1da177e4 LT |
23 | |
| 24 | #include "time.h" | |
| 25 | ||
| 26 | #define M_CONTROL 0xf8 | |
| 27 | #define M_SEC 0xf9 | |
| 28 | #define M_MIN 0xfa | |
| 29 | #define M_HOUR 0xfb | |
| 30 | #define M_DAY 0xfc | |
| 31 | #define M_DATE 0xfd | |
| 32 | #define M_MONTH 0xfe | |
| 33 | #define M_YEAR 0xff | |
| 34 | ||
| 35 | #define C_WRITE 0x80 | |
| 36 | #define C_READ 0x40 | |
| 37 | #define C_SIGN 0x20 | |
| 38 | #define C_CALIB 0x1f | |
| 39 | ||
| 40 | int sun3x_hwclk(int set, struct rtc_time *t) | |
| 41 | { | |
| 42 | volatile struct mostek_dt *h = | |
| 43 | (struct mostek_dt *)(SUN3X_EEPROM+M_CONTROL); | |
| 44 | unsigned long flags; | |
| 45 | ||
| 46 | local_irq_save(flags); | |
| 47 | ||
| 48 | if(set) { | |
| 49 | h->csr |= C_WRITE; | |
| 5b1d5f95 AB |
50 | h->sec = bin2bcd(t->tm_sec); |
| 51 | h->min = bin2bcd(t->tm_min); | |
| 52 | h->hour = bin2bcd(t->tm_hour); | |
| 53 | h->wday = bin2bcd(t->tm_wday); | |
| 54 | h->mday = bin2bcd(t->tm_mday); | |
| 55 | h->month = bin2bcd(t->tm_mon); | |
| 56 | h->year = bin2bcd(t->tm_year); | |
| 1da177e4 LT |
57 | h->csr &= ~C_WRITE; |
| 58 | } else { | |
| 59 | h->csr |= C_READ; | |
| 5b1d5f95 AB |
60 | t->tm_sec = bcd2bin(h->sec); |
| 61 | t->tm_min = bcd2bin(h->min); | |
| 62 | t->tm_hour = bcd2bin(h->hour); | |
| 63 | t->tm_wday = bcd2bin(h->wday); | |
| 64 | t->tm_mday = bcd2bin(h->mday); | |
| 65 | t->tm_mon = bcd2bin(h->month); | |
| 66 | t->tm_year = bcd2bin(h->year); | |
| 1da177e4 LT |
67 | h->csr &= ~C_READ; |
| 68 | } | |
| 69 | ||
| 70 | local_irq_restore(flags); | |
| 71 | ||
| 72 | return 0; | |
| 73 | } | |
| 74 | /* Not much we can do here */ | |
| c8d5ba18 | 75 | u32 sun3x_gettimeoffset(void) |
| 1da177e4 LT |
76 | { |
| 77 | return 0L; | |
| 78 | } | |
| 79 | ||
| 80 | #if 0 | |
| 81 | static void sun3x_timer_tick(int irq, void *dev_id, struct pt_regs *regs) | |
| 82 | { | |
| 83 | void (*vector)(int, void *, struct pt_regs *) = dev_id; | |
| 84 | ||
| 85 | /* Clear the pending interrupt - pulse the enable line low */ | |
| 86 | disable_irq(5); | |
| 87 | enable_irq(5); | |
| 88 | ||
| 89 | vector(irq, NULL, regs); | |
| 90 | } | |
| 91 | #endif | |
| 92 | ||
| 40220c1a | 93 | void __init sun3x_sched_init(irq_handler_t vector) |
| 1da177e4 LT |
94 | { |
| 95 | ||
| 96 | sun3_disable_interrupts(); | |
| 97 | ||
| 98 | ||
| 99 | /* Pulse enable low to get the clock started */ | |
| 100 | sun3_disable_irq(5); | |
| 101 | sun3_enable_irq(5); | |
| 102 | sun3_enable_interrupts(); | |
| 103 | } |