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Message-Id: <20221004172658.2302511-4-daniel.lezcano@linaro.org>
Date: Tue, 4 Oct 2022 19:26:52 +0200
From: Daniel Lezcano <daniel.lezcano@...aro.org>
To: rafael@...nel.org
Cc: linux-acpi@...r.kernel.org, linux-pm@...r.kernel.org,
linux-kernel@...r.kernel.org, Zhang Rui <rui.zhang@...el.com>,
Len Brown <lenb@...nel.org>
Subject: [PATCH RFC 3/9] thermal/acpi: Convert the acpi thermal trips to an array
Instead of having multiple trip points in the structure fields for
each trip type, let's create an array of trip points.
Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
---
drivers/acpi/thermal.c | 131 ++++++++++++++++++++++-------------------
1 file changed, 69 insertions(+), 62 deletions(-)
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 9620128f05d2..8bf2b25acdf1 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -104,6 +104,15 @@ static struct acpi_driver acpi_thermal_driver = {
.drv.pm = &acpi_thermal_pm,
};
+enum {
+ ACPI_THERMAL_TRIP_CRITICAL,
+ ACPI_THERMAL_TRIP_HOT,
+ ACPI_THERMAL_TRIP_PASSIVE,
+ ACPI_THERMAL_TRIP_ACTIVE
+};
+
+#define ACPI_THERMAL_TRIP_MAX (ACPI_THERMAL_TRIP_ACTIVE + ACPI_THERMAL_MAX_ACTIVE)
+
struct acpi_thermal_state {
u8 critical:1;
u8 hot:1;
@@ -143,9 +152,7 @@ struct acpi_thermal {
volatile u8 zombie;
struct acpi_thermal_flags flags;
struct acpi_thermal_state state;
- struct acpi_thermal_trip critical;
- struct acpi_thermal_trip hot;
- struct acpi_thermal_trip passive;
+ struct acpi_thermal_trip trips[ACPI_THERMAL_TRIP_MAX];
struct acpi_thermal_trip active[ACPI_THERMAL_MAX_ACTIVE];
struct acpi_handle_list devices;
struct thermal_zone_device *thermal_zone;
@@ -252,7 +259,7 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
if (flag & ACPI_TRIPS_CRITICAL) {
status = acpi_evaluate_integer(tz->device->handle,
"_CRT", NULL, &tmp);
- tz->critical.temperature = tmp;
+ tz->trips[ACPI_THERMAL_TRIP_CRITICAL].temperature = tmp;
/*
* Treat freezing temperatures as invalid as well; some
* BIOSes return really low values and cause reboots at startup.
@@ -260,32 +267,32 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
* ... so lets discard those as invalid.
*/
if (ACPI_FAILURE(status)) {
- tz->critical.flags.valid = 0;
+ tz->trips[ACPI_THERMAL_TRIP_CRITICAL].flags.valid = 0;
acpi_handle_debug(tz->device->handle,
"No critical threshold\n");
} else if (tmp <= 2732) {
pr_info(FW_BUG "Invalid critical threshold (%llu)\n",
tmp);
- tz->critical.flags.valid = 0;
+ tz->trips[ACPI_THERMAL_TRIP_CRITICAL].flags.valid = 0;
} else {
- tz->critical.flags.valid = 1;
+ tz->trips[ACPI_THERMAL_TRIP_CRITICAL].flags.valid = 1;
acpi_handle_debug(tz->device->handle,
"Found critical threshold [%lu]\n",
- tz->critical.temperature);
+ tz->trips[ACPI_THERMAL_TRIP_CRITICAL].temperature);
}
- if (tz->critical.flags.valid == 1) {
+ if (tz->trips[ACPI_THERMAL_TRIP_CRITICAL].flags.valid == 1) {
if (crt == -1) {
- tz->critical.flags.valid = 0;
+ tz->trips[ACPI_THERMAL_TRIP_CRITICAL].flags.valid = 0;
} else if (crt > 0) {
unsigned long crt_k = celsius_to_deci_kelvin(crt);
/*
* Allow override critical threshold
*/
- if (crt_k > tz->critical.temperature)
+ if (crt_k > tz->trips[ACPI_THERMAL_TRIP_CRITICAL].temperature)
pr_info("Critical threshold %d C\n", crt);
- tz->critical.temperature = crt_k;
+ tz->trips[ACPI_THERMAL_TRIP_CRITICAL].temperature = crt_k;
}
}
}
@@ -295,22 +302,22 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
status = acpi_evaluate_integer(tz->device->handle,
"_HOT", NULL, &tmp);
if (ACPI_FAILURE(status)) {
- tz->hot.flags.valid = 0;
+ tz->trips[ACPI_THERMAL_TRIP_HOT].flags.valid = 0;
acpi_handle_debug(tz->device->handle,
"No hot threshold\n");
} else {
- tz->hot.temperature = tmp;
- tz->hot.flags.valid = 1;
+ tz->trips[ACPI_THERMAL_TRIP_HOT].temperature = tmp;
+ tz->trips[ACPI_THERMAL_TRIP_HOT].flags.valid = 1;
acpi_handle_debug(tz->device->handle,
"Found hot threshold [%lu]\n",
- tz->hot.temperature);
+ tz->trips[ACPI_THERMAL_TRIP_HOT].temperature);
}
}
/* Passive (optional) */
- if (((flag & ACPI_TRIPS_PASSIVE) && tz->passive.flags.valid) ||
+ if (((flag & ACPI_TRIPS_PASSIVE) && tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid) ||
(flag == ACPI_TRIPS_INIT)) {
- valid = tz->passive.flags.valid;
+ valid = tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid;
if (psv == -1) {
status = AE_SUPPORT;
} else if (psv > 0) {
@@ -322,56 +329,56 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
}
if (ACPI_FAILURE(status))
- tz->passive.flags.valid = 0;
+ tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid = 0;
else {
- tz->passive.temperature = tmp;
- tz->passive.flags.valid = 1;
+ tz->trips[ACPI_THERMAL_TRIP_PASSIVE].temperature = tmp;
+ tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid = 1;
if (flag == ACPI_TRIPS_INIT) {
status = acpi_evaluate_integer(
tz->device->handle, "_TC1",
NULL, &tmp);
if (ACPI_FAILURE(status))
- tz->passive.flags.valid = 0;
+ tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid = 0;
else
- tz->passive.tc1 = tmp;
+ tz->trips[ACPI_THERMAL_TRIP_PASSIVE].tc1 = tmp;
status = acpi_evaluate_integer(
tz->device->handle, "_TC2",
NULL, &tmp);
if (ACPI_FAILURE(status))
- tz->passive.flags.valid = 0;
+ tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid = 0;
else
- tz->passive.tc2 = tmp;
+ tz->trips[ACPI_THERMAL_TRIP_PASSIVE].tc2 = tmp;
status = acpi_evaluate_integer(
tz->device->handle, "_TSP",
NULL, &tmp);
if (ACPI_FAILURE(status))
- tz->passive.flags.valid = 0;
+ tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid = 0;
else
- tz->passive.tsp = tmp;
+ tz->trips[ACPI_THERMAL_TRIP_PASSIVE].tsp = tmp;
}
}
}
- if ((flag & ACPI_TRIPS_DEVICES) && tz->passive.flags.valid) {
+ if ((flag & ACPI_TRIPS_DEVICES) && tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid) {
memset(&devices, 0, sizeof(struct acpi_handle_list));
status = acpi_evaluate_reference(tz->device->handle, "_PSL",
NULL, &devices);
if (ACPI_FAILURE(status)) {
acpi_handle_info(tz->device->handle,
"Invalid passive threshold\n");
- tz->passive.flags.valid = 0;
+ tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid = 0;
}
else
- tz->passive.flags.valid = 1;
+ tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid = 1;
- if (memcmp(&tz->passive.devices, &devices,
+ if (memcmp(&tz->trips[ACPI_THERMAL_TRIP_PASSIVE].devices, &devices,
sizeof(struct acpi_handle_list))) {
- memcpy(&tz->passive.devices, &devices,
+ memcpy(&tz->trips[ACPI_THERMAL_TRIP_PASSIVE].devices, &devices,
sizeof(struct acpi_handle_list));
ACPI_THERMAL_TRIPS_EXCEPTION(flag, tz, "device");
}
}
if ((flag & ACPI_TRIPS_PASSIVE) || (flag & ACPI_TRIPS_DEVICES)) {
- if (valid != tz->passive.flags.valid)
+ if (valid != tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid)
ACPI_THERMAL_TRIPS_EXCEPTION(flag, tz, "state");
}
@@ -462,9 +469,9 @@ static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
if (ret)
return ret;
- valid = tz->critical.flags.valid |
- tz->hot.flags.valid |
- tz->passive.flags.valid;
+ valid = tz->trips[ACPI_THERMAL_TRIP_CRITICAL].flags.valid |
+ tz->trips[ACPI_THERMAL_TRIP_HOT].flags.valid |
+ tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid;
for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++)
valid |= tz->active[i].flags.valid;
@@ -504,7 +511,7 @@ static int thermal_get_trip_type(struct thermal_zone_device *thermal,
if (!tz || trip < 0)
return -EINVAL;
- if (tz->critical.flags.valid) {
+ if (tz->trips[ACPI_THERMAL_TRIP_CRITICAL].flags.valid) {
if (!trip) {
*type = THERMAL_TRIP_CRITICAL;
return 0;
@@ -512,7 +519,7 @@ static int thermal_get_trip_type(struct thermal_zone_device *thermal,
trip--;
}
- if (tz->hot.flags.valid) {
+ if (tz->trips[ACPI_THERMAL_TRIP_HOT].flags.valid) {
if (!trip) {
*type = THERMAL_TRIP_HOT;
return 0;
@@ -520,7 +527,7 @@ static int thermal_get_trip_type(struct thermal_zone_device *thermal,
trip--;
}
- if (tz->passive.flags.valid) {
+ if (tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid) {
if (!trip) {
*type = THERMAL_TRIP_PASSIVE;
return 0;
@@ -549,30 +556,30 @@ static int thermal_get_trip_temp(struct thermal_zone_device *thermal,
if (!tz || trip < 0)
return -EINVAL;
- if (tz->critical.flags.valid) {
+ if (tz->trips[ACPI_THERMAL_TRIP_CRITICAL].flags.valid) {
if (!trip) {
*temp = deci_kelvin_to_millicelsius_with_offset(
- tz->critical.temperature,
+ tz->trips[ACPI_THERMAL_TRIP_CRITICAL].temperature,
tz->kelvin_offset);
return 0;
}
trip--;
}
- if (tz->hot.flags.valid) {
+ if (tz->trips[ACPI_THERMAL_TRIP_HOT].flags.valid) {
if (!trip) {
*temp = deci_kelvin_to_millicelsius_with_offset(
- tz->hot.temperature,
+ tz->trips[ACPI_THERMAL_TRIP_HOT].temperature,
tz->kelvin_offset);
return 0;
}
trip--;
}
- if (tz->passive.flags.valid) {
+ if (tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid) {
if (!trip) {
*temp = deci_kelvin_to_millicelsius_with_offset(
- tz->passive.temperature,
+ tz->trips[ACPI_THERMAL_TRIP_PASSIVE].temperature,
tz->kelvin_offset);
return 0;
}
@@ -598,9 +605,9 @@ static int thermal_get_crit_temp(struct thermal_zone_device *thermal,
{
struct acpi_thermal *tz = thermal->devdata;
- if (tz->critical.flags.valid) {
+ if (tz->trips[ACPI_THERMAL_TRIP_CRITICAL].flags.valid) {
*temperature = deci_kelvin_to_millicelsius_with_offset(
- tz->critical.temperature,
+ tz->trips[ACPI_THERMAL_TRIP_CRITICAL].temperature,
tz->kelvin_offset);
return 0;
} else
@@ -637,9 +644,9 @@ static int thermal_get_trend(struct thermal_zone_device *thermal,
* tz->temperature has already been updated by generic thermal layer,
* before this callback being invoked
*/
- i = (tz->passive.tc1 * (tz->temperature - tz->last_temperature))
- + (tz->passive.tc2
- * (tz->temperature - tz->passive.temperature));
+ i = (tz->trips[ACPI_THERMAL_TRIP_PASSIVE].tc1 * (tz->temperature - tz->last_temperature))
+ + (tz->trips[ACPI_THERMAL_TRIP_PASSIVE].tc2
+ * (tz->temperature - tz->trips[ACPI_THERMAL_TRIP_PASSIVE].temperature));
if (i > 0)
*trend = THERMAL_TREND_RAISING;
@@ -683,17 +690,17 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal,
int trip = -1;
int result = 0;
- if (tz->critical.flags.valid)
+ if (tz->trips[ACPI_THERMAL_TRIP_CRITICAL].flags.valid)
trip++;
- if (tz->hot.flags.valid)
+ if (tz->trips[ACPI_THERMAL_TRIP_HOT].flags.valid)
trip++;
- if (tz->passive.flags.valid) {
+ if (tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid) {
trip++;
- for (i = 0; i < tz->passive.devices.count;
+ for (i = 0; i < tz->trips[ACPI_THERMAL_TRIP_PASSIVE].devices.count;
i++) {
- handle = tz->passive.devices.handles[i];
+ handle = tz->trips[ACPI_THERMAL_TRIP_PASSIVE].devices.handles[i];
dev = acpi_fetch_acpi_dev(handle);
if (dev != device)
continue;
@@ -773,23 +780,23 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)
acpi_status status;
int i;
- if (tz->critical.flags.valid)
+ if (tz->trips[ACPI_THERMAL_TRIP_CRITICAL].flags.valid)
trips++;
- if (tz->hot.flags.valid)
+ if (tz->trips[ACPI_THERMAL_TRIP_HOT].flags.valid)
trips++;
- if (tz->passive.flags.valid)
+ if (tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid)
trips++;
for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE &&
tz->active[i].flags.valid; i++, trips++);
- if (tz->passive.flags.valid)
+ if (tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid)
tz->thermal_zone =
thermal_zone_device_register("acpitz", trips, 0, tz,
&acpi_thermal_zone_ops, NULL,
- tz->passive.tsp*100,
+ tz->trips[ACPI_THERMAL_TRIP_PASSIVE].tsp*100,
tz->polling_frequency*100);
else
tz->thermal_zone =
@@ -966,8 +973,8 @@ static int acpi_thermal_get_info(struct acpi_thermal *tz)
*/
static void acpi_thermal_guess_offset(struct acpi_thermal *tz)
{
- if (tz->critical.flags.valid &&
- (tz->critical.temperature % 5) == 1)
+ if (tz->trips[ACPI_THERMAL_TRIP_CRITICAL].flags.valid &&
+ (tz->trips[ACPI_THERMAL_TRIP_CRITICAL].temperature % 5) == 1)
tz->kelvin_offset = 273100;
else
tz->kelvin_offset = 273200;
--
2.34.1
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