^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * linux/arch/m68k/sun3x/time.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Sun3x-specific time handling
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/kd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/kernel_stat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/rtc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/bcd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <asm/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <asm/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <asm/machdep.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <asm/traps.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <asm/sun3x.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <asm/sun3ints.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include "time.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define M_CONTROL 0xf8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define M_SEC 0xf9
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define M_MIN 0xfa
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define M_HOUR 0xfb
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define M_DAY 0xfc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define M_DATE 0xfd
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define M_MONTH 0xfe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define M_YEAR 0xff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define C_WRITE 0x80
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define C_READ 0x40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define C_SIGN 0x20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define C_CALIB 0x1f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) int sun3x_hwclk(int set, struct rtc_time *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) volatile struct mostek_dt *h =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) (struct mostek_dt *)(SUN3X_EEPROM+M_CONTROL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) if(set) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) h->csr |= C_WRITE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) h->sec = bin2bcd(t->tm_sec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) h->min = bin2bcd(t->tm_min);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) h->hour = bin2bcd(t->tm_hour);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) h->wday = bin2bcd(t->tm_wday);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) h->mday = bin2bcd(t->tm_mday);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) h->month = bin2bcd(t->tm_mon + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) h->year = bin2bcd(t->tm_year % 100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) h->csr &= ~C_WRITE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) h->csr |= C_READ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) t->tm_sec = bcd2bin(h->sec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) t->tm_min = bcd2bin(h->min);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) t->tm_hour = bcd2bin(h->hour);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) t->tm_wday = bcd2bin(h->wday);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) t->tm_mday = bcd2bin(h->mday);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) t->tm_mon = bcd2bin(h->month) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) t->tm_year = bcd2bin(h->year);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) h->csr &= ~C_READ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) if (t->tm_year < 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) t->tm_year += 100;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) #if 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) static irqreturn_t sun3x_timer_tick(int irq, void *dev_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) irq_handler_t timer_routine = dev_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) /* Clear the pending interrupt - pulse the enable line low */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) disable_irq(5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) enable_irq(5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) timer_routine(0, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) void __init sun3x_sched_init(irq_handler_t vector)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) sun3_disable_interrupts();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) /* Pulse enable low to get the clock started */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) sun3_disable_irq(5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) sun3_enable_irq(5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) sun3_enable_interrupts();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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