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[ACPI] Allow return to active cooling mode once passive mode is entered

Browse Source 
http://bugzilla.kernel.org/show_bug.cgi?id=3410
https://bugzilla.novell.com/show_bug.cgi?id=131543

Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Konstantin Karasyov <konstantin.a.karasyov@intel.com>
Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Yu Luming <luming.yu@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
This commit is contained in:
Thomas Renninger
2004-09-16 11:07:00 -04:00
committed by Len Brown
parent d2149b5423
commit 1cbf4c563c
2 changed files with 108 additions and 93 deletions
Download Patch File Download Diff File Expand all files Collapse all files

163
drivers/acpi/thermal.c
View File

@@ -72,7 +72,7 @@
#define _COMPONENT ACPI_THERMAL_COMPONENT
ACPI_MODULE_NAME("acpi_thermal")
MODULE_AUTHOR("Paul Diefenbaugh");
MODULE_AUTHOR("Paul Diefenbaugh");
MODULE_DESCRIPTION(ACPI_THERMAL_DRIVER_NAME);
MODULE_LICENSE("GPL");
@@ -517,9 +517,9 @@ static int acpi_thermal_hot(struct acpi_thermal *tz)
return_VALUE(0);
}
static int acpi_thermal_passive(struct acpi_thermal *tz)
static void acpi_thermal_passive(struct acpi_thermal *tz)
{
int result = 0;
int result = 1;
struct acpi_thermal_passive *passive = NULL;
int trend = 0;
int i = 0;
@@ -527,7 +527,7 @@ static int acpi_thermal_passive(struct acpi_thermal *tz)
ACPI_FUNCTION_TRACE("acpi_thermal_passive");
if (!tz || !tz->trips.passive.flags.valid)
return_VALUE(-EINVAL);
return;
passive = &(tz->trips.passive);
@@ -547,7 +547,7 @@ static int acpi_thermal_passive(struct acpi_thermal *tz)
trend, passive->tc1, tz->temperature,
tz->last_temperature, passive->tc2,
tz->temperature, passive->temperature));
tz->trips.passive.flags.enabled = 1;
passive->flags.enabled = 1;
/* Heating up? */
if (trend > 0)
for (i = 0; i < passive->devices.count; i++)
@@ -556,12 +556,32 @@ static int acpi_thermal_passive(struct acpi_thermal *tz)
handles[i],
ACPI_PROCESSOR_LIMIT_INCREMENT);
/* Cooling off? */
else if (trend < 0)
else if (trend < 0) {
for (i = 0; i < passive->devices.count; i++)
acpi_processor_set_thermal_limit(passive->
devices.
handles[i],
ACPI_PROCESSOR_LIMIT_DECREMENT);
/*
* assume that we are on highest
* freq/lowest thrott and can leave
* passive mode, even in error case
*/
if (!acpi_processor_set_thermal_limit
(passive->devices.handles[i],
ACPI_PROCESSOR_LIMIT_DECREMENT))
result = 0;
/*
* Leave cooling mode, even if the temp might
* higher than trip point This is because some
* machines might have long thermal polling
* frequencies (tsp) defined. We will fall back
* into passive mode in next cycle (probably quicker)
*/
if (result) {
passive->flags.enabled = 0;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Disabling passive cooling, still above threshold,"
" but we are cooling down\n"));
}
}
return;
}
/*
@@ -571,23 +591,21 @@ static int acpi_thermal_passive(struct acpi_thermal *tz)
* and avoid thrashing around the passive trip point. Note that we
* assume symmetry.
*/
else if (tz->trips.passive.flags.enabled) {
for (i = 0; i < passive->devices.count; i++)
result =
acpi_processor_set_thermal_limit(passive->devices.
handles[i],
ACPI_PROCESSOR_LIMIT_DECREMENT);
if (result == 1) {
tz->trips.passive.flags.enabled = 0;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Disabling passive cooling (zone is cool)\n"));
}
if (!passive->flags.enabled)
return;
for (i = 0; i < passive->devices.count; i++)
if (!acpi_processor_set_thermal_limit
(passive->devices.handles[i],
ACPI_PROCESSOR_LIMIT_DECREMENT))
result = 0;
if (result) {
passive->flags.enabled = 0;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Disabling passive cooling (zone is cool)\n"));
}
return_VALUE(0);
}
static int acpi_thermal_active(struct acpi_thermal *tz)
static void acpi_thermal_active(struct acpi_thermal *tz)
{
int result = 0;
struct acpi_thermal_active *active = NULL;
@@ -598,74 +616,66 @@ static int acpi_thermal_active(struct acpi_thermal *tz)
ACPI_FUNCTION_TRACE("acpi_thermal_active");
if (!tz)
return_VALUE(-EINVAL);
return;
for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) {
active = &(tz->trips.active[i]);
if (!active || !active->flags.valid)
break;
/*
* Above Threshold?
* ----------------
* If not already enabled, turn ON all cooling devices
* associated with this active threshold.
*/
if (tz->temperature >= active->temperature) {
/*
* Above Threshold?
* ----------------
* If not already enabled, turn ON all cooling devices
* associated with this active threshold.
*/
if (active->temperature > maxtemp)
tz->state.active_index = i, maxtemp =
active->temperature;
if (!active->flags.enabled) {
for (j = 0; j < active->devices.count; j++) {
result =
acpi_bus_set_power(active->devices.
handles[j],
ACPI_STATE_D0);
if (result) {
ACPI_DEBUG_PRINT((ACPI_DB_WARN,
"Unable to turn cooling device [%p] 'on'\n",
active->
devices.
handles[j]));
continue;
}
active->flags.enabled = 1;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Cooling device [%p] now 'on'\n",
tz->state.active_index = i;
maxtemp = active->temperature;
if (active->flags.enabled)
continue;
for (j = 0; j < active->devices.count; j++) {
result =
acpi_bus_set_power(active->devices.
handles[j],
ACPI_STATE_D0);
if (result) {
ACPI_DEBUG_PRINT((ACPI_DB_WARN,
"Unable to turn cooling device [%p] 'on'\n",
active->devices.
handles[j]));
continue;
}
active->flags.enabled = 1;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Cooling device [%p] now 'on'\n",
active->devices.handles[j]));
}
continue;
}
if (!active->flags.enabled)
continue;
/*
* Below Threshold?
* ----------------
* Turn OFF all cooling devices associated with this
* threshold.
*/
else if (active->flags.enabled) {
for (j = 0; j < active->devices.count; j++) {
result =
acpi_bus_set_power(active->devices.
handles[j],
ACPI_STATE_D3);
if (result) {
ACPI_DEBUG_PRINT((ACPI_DB_WARN,
"Unable to turn cooling device [%p] 'off'\n",
active->devices.
handles[j]));
continue;
}
active->flags.enabled = 0;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Cooling device [%p] now 'off'\n",
for (j = 0; j < active->devices.count; j++) {
result = acpi_bus_set_power(active->devices.handles[j],
ACPI_STATE_D3);
if (result) {
ACPI_DEBUG_PRINT((ACPI_DB_WARN,
"Unable to turn cooling device [%p] 'off'\n",
active->devices.handles[j]));
continue;
}
active->flags.enabled = 0;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Cooling device [%p] now 'off'\n",
active->devices.handles[j]));
}
}
return_VALUE(0);
}
static void acpi_thermal_check(void *context);
@@ -744,15 +754,12 @@ static void acpi_thermal_check(void *data)
* Again, separated from the above two to allow independent policy
* decisions.
*/
if (tz->trips.critical.flags.enabled)
tz->state.critical = 1;
if (tz->trips.hot.flags.enabled)
tz->state.hot = 1;
if (tz->trips.passive.flags.enabled)
tz->state.passive = 1;
tz->state.critical = tz->trips.critical.flags.enabled;
tz->state.hot = tz->trips.hot.flags.enabled;
tz->state.passive = tz->trips.passive.flags.enabled;
tz->state.active = 0;
for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++)
if (tz->trips.active[i].flags.enabled)
tz->state.active = 1;
tz->state.active |= tz->trips.active[i].flags.enabled;
/*
* Calculate Sleep Time