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ACPI: thermal: Use thermal_zone_for_each_trip() for updating trips

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Rearrange the code handling notifications from the platform firmware
regarding trip point updates to carry out one loop over trip points
instead of two of them by using thermal_zone_for_each_trip() for that,
which is more straightforward than using a combination of
thermal_zone_device_exec() and for_each_thermal_trip(), each with its
own callback function.

No intentional functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
This commit is contained in:
Rafael J. Wysocki 2023-10-03 15:24:12 +02:00
parent 4f9cf91e41
commit b251ab28ca
1 changed files with 37 additions and 41 deletions
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78
drivers/acpi/thermal.c
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@ -177,6 +177,15 @@ static bool acpi_thermal_trip_valid(struct acpi_thermal_trip *acpi_trip)
return acpi_trip->temp_dk != THERMAL_TEMP_INVALID;
}
static int active_trip_index(struct acpi_thermal *tz,
struct acpi_thermal_trip *acpi_trip)
{
struct acpi_thermal_active *active;
active = container_of(acpi_trip, struct acpi_thermal_active, trip);
return active - tz->trips.active;
}
static long get_passive_temp(struct acpi_thermal *tz)
{
unsigned long long tmp;
@ -213,21 +222,18 @@ static long get_active_temp(struct acpi_thermal *tz, int index)
}
static void acpi_thermal_update_trip(struct acpi_thermal *tz,
int index)
const struct thermal_trip *trip)
{
struct acpi_thermal_trip *acpi_trip;
struct acpi_thermal_trip *acpi_trip = trip->priv;
acpi_trip = index == ACPI_THERMAL_TRIP_PASSIVE ?
&tz->trips.passive.trip : &tz->trips.active[index].trip;
if (!acpi_thermal_trip_valid(acpi_trip))
return;
if (index == ACPI_THERMAL_TRIP_PASSIVE) {
if (trip->type == THERMAL_TRIP_PASSIVE) {
if (psv > 0)
return;
acpi_trip->temp_dk = get_passive_temp(tz);
} else {
int index = active_trip_index(tz, acpi_trip);
acpi_trip->temp_dk = get_active_temp(tz, index);
}
@ -264,31 +270,39 @@ static bool update_trip_devices(struct acpi_thermal *tz,
return true;
}
static void acpi_thermal_update_trip_devices(struct acpi_thermal *tz, int index)
static void acpi_thermal_update_trip_devices(struct acpi_thermal *tz,
const struct thermal_trip *trip)
{
struct acpi_thermal_trip *acpi_trip;
struct acpi_thermal_trip *acpi_trip = trip->priv;
int index = trip->type == THERMAL_TRIP_PASSIVE ?
ACPI_THERMAL_TRIP_PASSIVE : active_trip_index(tz, acpi_trip);
acpi_trip = index == ACPI_THERMAL_TRIP_PASSIVE ?
&tz->trips.passive.trip : &tz->trips.active[index].trip;
if (!acpi_thermal_trip_valid(acpi_trip))
if (update_trip_devices(tz, acpi_trip, index, true))
return;
if (update_trip_devices(tz, acpi_trip, index, true)) {
return;
}
acpi_trip->temp_dk = THERMAL_TEMP_INVALID;
ACPI_THERMAL_TRIPS_EXCEPTION(tz, "state");
}
struct adjust_trip_data {
struct acpi_thermal *tz;
u32 event;
};
static int acpi_thermal_adjust_trip(struct thermal_trip *trip, void *data)
{
struct acpi_thermal_trip *acpi_trip = trip->priv;
struct acpi_thermal *tz = data;
struct adjust_trip_data *atd = data;
struct acpi_thermal *tz = atd->tz;
if (!acpi_trip)
if (!acpi_trip || !acpi_thermal_trip_valid(acpi_trip))
return 0;
if (atd->event == ACPI_THERMAL_NOTIFY_THRESHOLDS)
acpi_thermal_update_trip(tz, trip);
else
acpi_thermal_update_trip_devices(tz, trip);
if (acpi_thermal_trip_valid(acpi_trip))
trip->temperature = acpi_thermal_temp(tz, acpi_trip->temp_dk);
else
@ -297,25 +311,6 @@ static int acpi_thermal_adjust_trip(struct thermal_trip *trip, void *data)
return 0;
}
static void acpi_thermal_adjust_thermal_zone(struct thermal_zone_device *thermal,
unsigned long data)
{
struct acpi_thermal *tz = thermal_zone_device_priv(thermal);
int i;
if (data == ACPI_THERMAL_NOTIFY_THRESHOLDS) {
acpi_thermal_update_trip(tz, ACPI_THERMAL_TRIP_PASSIVE);
for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++)
acpi_thermal_update_trip(tz, i);
} else {
acpi_thermal_update_trip_devices(tz, ACPI_THERMAL_TRIP_PASSIVE);
for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++)
acpi_thermal_update_trip_devices(tz, i);
}
for_each_thermal_trip(tz->thermal_zone, acpi_thermal_adjust_trip, tz);
}
static void acpi_queue_thermal_check(struct acpi_thermal *tz)
{
if (!work_pending(&tz->thermal_check_work))
@ -324,17 +319,18 @@ static void acpi_queue_thermal_check(struct acpi_thermal *tz)
static void acpi_thermal_trips_update(struct acpi_thermal *tz, u32 event)
{
struct adjust_trip_data atd = { .tz = tz, .event = event };
struct acpi_device *adev = tz->device;
/*
* Use thermal_zone_device_exec() to carry out the trip points
* Use thermal_zone_for_each_trip() to carry out the trip points
* update, so as to protect thermal_get_trend() from getting stale
* trip point temperatures and to prevent thermal_zone_device_update()
* invoked from acpi_thermal_check_fn() from producing inconsistent
* results.
*/
thermal_zone_device_exec(tz->thermal_zone,
acpi_thermal_adjust_thermal_zone, event);
thermal_zone_for_each_trip(tz->thermal_zone,
acpi_thermal_adjust_trip, &atd);
acpi_queue_thermal_check(tz);
acpi_bus_generate_netlink_event(adev->pnp.device_class,
dev_name(&adev->dev), event, 0);