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Diffstat (limited to 'arch/ppc64/kernel/pmac_time.c')
-rw-r--r--arch/ppc64/kernel/pmac_time.c195
1 files changed, 0 insertions, 195 deletions
diff --git a/arch/ppc64/kernel/pmac_time.c b/arch/ppc64/kernel/pmac_time.c
deleted file mode 100644
index 41bbb8c5969..00000000000
--- a/arch/ppc64/kernel/pmac_time.c
+++ /dev/null
@@ -1,195 +0,0 @@
-/*
- * Support for periodic interrupts (100 per second) and for getting
- * the current time from the RTC on Power Macintoshes.
- *
- * We use the decrementer register for our periodic interrupts.
- *
- * Paul Mackerras August 1996.
- * Copyright (C) 1996 Paul Mackerras.
- * Copyright (C) 2003-2005 Benjamin Herrenschmidt.
- *
- */
-#include <linux/config.h>
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/param.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/init.h>
-#include <linux/time.h>
-#include <linux/adb.h>
-#include <linux/pmu.h>
-#include <linux/interrupt.h>
-
-#include <asm/sections.h>
-#include <asm/prom.h>
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/pgtable.h>
-#include <asm/machdep.h>
-#include <asm/time.h>
-#include <asm/nvram.h>
-#include <asm/smu.h>
-
-#undef DEBUG
-
-#ifdef DEBUG
-#define DBG(x...) printk(x)
-#else
-#define DBG(x...)
-#endif
-
-/* Apparently the RTC stores seconds since 1 Jan 1904 */
-#define RTC_OFFSET 2082844800
-
-/*
- * Calibrate the decrementer frequency with the VIA timer 1.
- */
-#define VIA_TIMER_FREQ_6 4700000 /* time 1 frequency * 6 */
-
-extern struct timezone sys_tz;
-extern void to_tm(int tim, struct rtc_time * tm);
-
-void __pmac pmac_get_rtc_time(struct rtc_time *tm)
-{
- switch(sys_ctrler) {
-#ifdef CONFIG_ADB_PMU
- case SYS_CTRLER_PMU: {
- /* TODO: Move that to a function in the PMU driver */
- struct adb_request req;
- unsigned int now;
-
- if (pmu_request(&req, NULL, 1, PMU_READ_RTC) < 0)
- return;
- pmu_wait_complete(&req);
- if (req.reply_len != 4)
- printk(KERN_ERR "pmac_get_rtc_time: PMU returned a %d"
- " bytes reply\n", req.reply_len);
- now = (req.reply[0] << 24) + (req.reply[1] << 16)
- + (req.reply[2] << 8) + req.reply[3];
- DBG("get: %u -> %u\n", (int)now, (int)(now - RTC_OFFSET));
- now -= RTC_OFFSET;
-
- to_tm(now, tm);
- tm->tm_year -= 1900;
- tm->tm_mon -= 1;
-
- DBG("-> tm_mday: %d, tm_mon: %d, tm_year: %d, %d:%02d:%02d\n",
- tm->tm_mday, tm->tm_mon, tm->tm_year,
- tm->tm_hour, tm->tm_min, tm->tm_sec);
- break;
- }
-#endif /* CONFIG_ADB_PMU */
-
-#ifdef CONFIG_PMAC_SMU
- case SYS_CTRLER_SMU:
- smu_get_rtc_time(tm, 1);
- break;
-#endif /* CONFIG_PMAC_SMU */
- default:
- ;
- }
-}
-
-int __pmac pmac_set_rtc_time(struct rtc_time *tm)
-{
- switch(sys_ctrler) {
-#ifdef CONFIG_ADB_PMU
- case SYS_CTRLER_PMU: {
- /* TODO: Move that to a function in the PMU driver */
- struct adb_request req;
- unsigned int nowtime;
-
- DBG("set: tm_mday: %d, tm_mon: %d, tm_year: %d,"
- " %d:%02d:%02d\n",
- tm->tm_mday, tm->tm_mon, tm->tm_year,
- tm->tm_hour, tm->tm_min, tm->tm_sec);
-
- nowtime = mktime(tm->tm_year + 1900, tm->tm_mon + 1,
- tm->tm_mday, tm->tm_hour, tm->tm_min,
- tm->tm_sec);
-
- DBG("-> %u -> %u\n", (int)nowtime,
- (int)(nowtime + RTC_OFFSET));
- nowtime += RTC_OFFSET;
-
- if (pmu_request(&req, NULL, 5, PMU_SET_RTC,
- nowtime >> 24, nowtime >> 16,
- nowtime >> 8, nowtime) < 0)
- return -ENXIO;
- pmu_wait_complete(&req);
- if (req.reply_len != 0)
- printk(KERN_ERR "pmac_set_rtc_time: PMU returned a %d"
- " bytes reply\n", req.reply_len);
- return 0;
- }
-#endif /* CONFIG_ADB_PMU */
-
-#ifdef CONFIG_PMAC_SMU
- case SYS_CTRLER_SMU:
- return smu_set_rtc_time(tm, 1);
-#endif /* CONFIG_PMAC_SMU */
- default:
- return -ENODEV;
- }
-}
-
-void __init pmac_get_boot_time(struct rtc_time *tm)
-{
- pmac_get_rtc_time(tm);
-
-#ifdef disabled__CONFIG_NVRAM
- s32 delta = 0;
- int dst;
-
- delta = ((s32)pmac_xpram_read(PMAC_XPRAM_MACHINE_LOC + 0x9)) << 16;
- delta |= ((s32)pmac_xpram_read(PMAC_XPRAM_MACHINE_LOC + 0xa)) << 8;
- delta |= pmac_xpram_read(PMAC_XPRAM_MACHINE_LOC + 0xb);
- if (delta & 0x00800000UL)
- delta |= 0xFF000000UL;
- dst = ((pmac_xpram_read(PMAC_XPRAM_MACHINE_LOC + 0x8) & 0x80) != 0);
- printk("GMT Delta read from XPRAM: %d minutes, DST: %s\n", delta/60,
- dst ? "on" : "off");
-#endif
-}
-
-/*
- * Query the OF and get the decr frequency.
- * FIXME: merge this with generic_calibrate_decr
- */
-void __init pmac_calibrate_decr(void)
-{
- struct device_node *cpu;
- unsigned int freq, *fp;
- struct div_result divres;
-
- /*
- * The cpu node should have a timebase-frequency property
- * to tell us the rate at which the decrementer counts.
- */
- cpu = find_type_devices("cpu");
- if (cpu == 0)
- panic("can't find cpu node in time_init");
- fp = (unsigned int *) get_property(cpu, "timebase-frequency", NULL);
- if (fp == 0)
- panic("can't get cpu timebase frequency");
- freq = *fp;
- printk("time_init: decrementer frequency = %u.%.6u MHz\n",
- freq/1000000, freq%1000000);
- tb_ticks_per_jiffy = freq / HZ;
- tb_ticks_per_sec = tb_ticks_per_jiffy * HZ;
- tb_ticks_per_usec = freq / 1000000;
- tb_to_us = mulhwu_scale_factor(freq, 1000000);
- div128_by_32( 1024*1024, 0, tb_ticks_per_sec, &divres );
- tb_to_xs = divres.result_low;
- ppc_tb_freq = freq;
-
- fp = (unsigned int *)get_property(cpu, "clock-frequency", NULL);
- if (fp == 0)
- panic("can't get cpu processor frequency");
- ppc_proc_freq = *fp;
-
- setup_default_decr();
-}
-