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authoriwasaki <iwasaki@FreeBSD.org>2000-09-14 22:34:57 +0000
committeriwasaki <iwasaki@FreeBSD.org>2000-09-14 22:34:57 +0000
commitee51abd0609e8401331f51adaca5051b068a391a (patch)
tree970617cd21051f70fef55eff718078f20e915530 /sys/i386/bios/apm.c
parent45b94b8ee4029e7816e2e81eb551ba3dd2b491c8 (diff)
downloadFreeBSD-src-ee51abd0609e8401331f51adaca5051b068a391a.zip
FreeBSD-src-ee51abd0609e8401331f51adaca5051b068a391a.tar.gz
Add Timer device driver for power management events.
The code for suspend/resume is derived from APM device driver. Some people suggested the original code is somewhat buggy, but I'd like to just move it from apm.c without any major changes for the initial version. This code should be refined later. To use pmtimer to adjust time at resume time, add device pmtimer in your kernel config file, and add hint.pmtimer.0.at="isa" in your device.hints Reviewed by: -current, bde
Diffstat (limited to 'sys/i386/bios/apm.c')
-rw-r--r--sys/i386/bios/apm.c86
1 files changed, 6 insertions, 80 deletions
diff --git a/sys/i386/bios/apm.c b/sys/i386/bios/apm.c
index b12c43f..68ff502 100644
--- a/sys/i386/bios/apm.c
+++ b/sys/i386/bios/apm.c
@@ -402,69 +402,6 @@ apm_hook_disestablish(int apmh, struct apmhook *ah)
apm_del_hook(&hook[apmh], ah);
}
-
-static struct timeval suspend_time;
-static struct timeval diff_time;
-
-static int
-apm_default_resume(void *arg)
-{
- int pl;
- u_int second, minute, hour;
- struct timeval resume_time, tmp_time;
-
- /* modified for adjkerntz */
- pl = splsoftclock();
- i8254_restore(); /* restore timer_freq and hz */
- inittodr(0); /* adjust time to RTC */
- microtime(&resume_time);
- getmicrotime(&tmp_time);
- timevaladd(&tmp_time, &diff_time);
-
-#ifdef FIXME
- /* XXX THIS DOESN'T WORK!!! */
- time = tmp_time;
-#endif
-
-#ifdef APM_FIXUP_CALLTODO
- /* Calculate the delta time suspended */
- timevalsub(&resume_time, &suspend_time);
- /* Fixup the calltodo list with the delta time. */
- adjust_timeout_calltodo(&resume_time);
-#endif /* APM_FIXUP_CALLTODOK */
- splx(pl);
-#ifndef APM_FIXUP_CALLTODO
- second = resume_time.tv_sec - suspend_time.tv_sec;
-#else /* APM_FIXUP_CALLTODO */
- /*
- * We've already calculated resume_time to be the delta between
- * the suspend and the resume.
- */
- second = resume_time.tv_sec;
-#endif /* APM_FIXUP_CALLTODO */
- hour = second / 3600;
- second %= 3600;
- minute = second / 60;
- second %= 60;
- log(LOG_NOTICE, "resumed from suspended mode (slept %02d:%02d:%02d)\n",
- hour, minute, second);
- return 0;
-}
-
-static int
-apm_default_suspend(void *arg)
-{
- int pl;
-
- pl = splsoftclock();
- microtime(&diff_time);
- inittodr(0);
- microtime(&suspend_time);
- timevalsub(&diff_time, &suspend_time);
- splx(pl);
- return 0;
-}
-
static int apm_record_event __P((struct apm_softc *, u_int));
static void apm_processevent(void);
@@ -489,6 +426,7 @@ apm_do_suspend(void)
} else {
apm_execute_hook(hook[APM_HOOK_SUSPEND]);
if (apm_suspend_system(PMST_SUSPEND) == 0) {
+ sc->suspending = 1;
apm_processevent();
} else {
/* Failure, 'resume' the system again */
@@ -515,7 +453,6 @@ apm_do_standby(void)
* As far as standby, we don't need to execute
* all of suspend hooks.
*/
- apm_default_suspend(&apm_softc);
if (apm_suspend_system(PMST_STANDBY) == 0)
apm_processevent();
}
@@ -600,6 +537,10 @@ apm_resume(void)
if (!sc)
return;
+ if (sc->suspending == 0)
+ return;
+
+ sc->suspending = 0;
if (sc->initialized) {
apm_execute_hook(hook[APM_HOOK_RESUME]);
DEVICE_RESUME(root_bus);
@@ -987,7 +928,6 @@ apm_processevent(void)
break;
OPMEV_DEBUGMESSAGE(PMEV_STANDBYRESUME);
apm_record_event(sc, apm_event);
- apm_resume();
break;
OPMEV_DEBUGMESSAGE(PMEV_BATTERYLOW);
if (apm_record_event(sc, apm_event)) {
@@ -1095,26 +1035,12 @@ apm_attach(device_t dev)
}
}
- /* default suspend hook */
- sc->sc_suspend.ah_fun = apm_default_suspend;
- sc->sc_suspend.ah_arg = sc;
- sc->sc_suspend.ah_name = "default suspend";
- sc->sc_suspend.ah_order = APM_MAX_ORDER;
-
- /* default resume hook */
- sc->sc_resume.ah_fun = apm_default_resume;
- sc->sc_resume.ah_arg = sc;
- sc->sc_resume.ah_name = "default resume";
- sc->sc_resume.ah_order = APM_MIN_ORDER;
-
- apm_hook_establish(APM_HOOK_SUSPEND, &sc->sc_suspend);
- apm_hook_establish(APM_HOOK_RESUME , &sc->sc_resume);
-
/* Power the system off using APM */
EVENTHANDLER_REGISTER(shutdown_final, apm_power_off, NULL,
SHUTDOWN_PRI_LAST);
sc->initialized = 1;
+ sc->suspending = 0;
make_dev(&apm_cdevsw, 0, 0, 5, 0660, "apm");
make_dev(&apm_cdevsw, 8, 0, 5, 0660, "apmctl");
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