mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
103 lines
2.0 KiB
103 lines
2.0 KiB
// SPDX-License-Identifier: GPL-2.0 |
|
/* |
|
* linux/arch/m68k/sun3x/time.c |
|
* |
|
* Sun3x-specific time handling |
|
*/ |
|
|
|
#include <linux/types.h> |
|
#include <linux/kd.h> |
|
#include <linux/init.h> |
|
#include <linux/sched.h> |
|
#include <linux/kernel_stat.h> |
|
#include <linux/interrupt.h> |
|
#include <linux/rtc.h> |
|
#include <linux/bcd.h> |
|
|
|
#include <asm/irq.h> |
|
#include <asm/io.h> |
|
#include <asm/machdep.h> |
|
#include <asm/traps.h> |
|
#include <asm/sun3x.h> |
|
#include <asm/sun3ints.h> |
|
|
|
#include "time.h" |
|
|
|
#define M_CONTROL 0xf8 |
|
#define M_SEC 0xf9 |
|
#define M_MIN 0xfa |
|
#define M_HOUR 0xfb |
|
#define M_DAY 0xfc |
|
#define M_DATE 0xfd |
|
#define M_MONTH 0xfe |
|
#define M_YEAR 0xff |
|
|
|
#define C_WRITE 0x80 |
|
#define C_READ 0x40 |
|
#define C_SIGN 0x20 |
|
#define C_CALIB 0x1f |
|
|
|
int sun3x_hwclk(int set, struct rtc_time *t) |
|
{ |
|
volatile struct mostek_dt *h = |
|
(struct mostek_dt *)(SUN3X_EEPROM+M_CONTROL); |
|
unsigned long flags; |
|
|
|
local_irq_save(flags); |
|
|
|
if(set) { |
|
h->csr |= C_WRITE; |
|
h->sec = bin2bcd(t->tm_sec); |
|
h->min = bin2bcd(t->tm_min); |
|
h->hour = bin2bcd(t->tm_hour); |
|
h->wday = bin2bcd(t->tm_wday); |
|
h->mday = bin2bcd(t->tm_mday); |
|
h->month = bin2bcd(t->tm_mon + 1); |
|
h->year = bin2bcd(t->tm_year % 100); |
|
h->csr &= ~C_WRITE; |
|
} else { |
|
h->csr |= C_READ; |
|
t->tm_sec = bcd2bin(h->sec); |
|
t->tm_min = bcd2bin(h->min); |
|
t->tm_hour = bcd2bin(h->hour); |
|
t->tm_wday = bcd2bin(h->wday); |
|
t->tm_mday = bcd2bin(h->mday); |
|
t->tm_mon = bcd2bin(h->month) - 1; |
|
t->tm_year = bcd2bin(h->year); |
|
h->csr &= ~C_READ; |
|
if (t->tm_year < 70) |
|
t->tm_year += 100; |
|
} |
|
|
|
local_irq_restore(flags); |
|
|
|
return 0; |
|
} |
|
|
|
#if 0 |
|
static irqreturn_t sun3x_timer_tick(int irq, void *dev_id) |
|
{ |
|
unsigned long flags; |
|
|
|
local_irq_save(flags); |
|
/* Clear the pending interrupt - pulse the enable line low */ |
|
disable_irq(5); |
|
enable_irq(5); |
|
legacy_timer_tick(1); |
|
local_irq_restore(flags); |
|
|
|
return IRQ_HANDLED; |
|
} |
|
#endif |
|
|
|
void __init sun3x_sched_init(void) |
|
{ |
|
|
|
sun3_disable_interrupts(); |
|
|
|
|
|
/* Pulse enable low to get the clock started */ |
|
sun3_disable_irq(5); |
|
sun3_enable_irq(5); |
|
sun3_enable_interrupts(); |
|
}
|
|
|