LinuxLists.cc - [PATCH v7 00/29] Rework the trip points creation

2022-09-28 21:03:18

Subject: [PATCH v7 00/29] Rework the trip points creation

This work is the pre-requisite of handling correctly when the trip
point are crossed. For that we need to rework how the trip points are
declared and assigned to a thermal zone.

Even if it appears to be a common sense to have the trip points being
ordered, this no guarantee neither documentation telling that is the
case.

One solution could have been to create an ordered array of trips built
when registering the thermal zone by calling the different get_trip*
ops. However those ops receive a thermal zone pointer which is not
known as it is in the process of creating it.

This cyclic dependency shows we have to rework how we manage the trip
points.

Actually, all the trip points definition can be common to the backend
sensor drivers and we can factor out the thermal trip structure in all
of them.

Then, as we register the thermal trips array, they will be available
in the thermal zone structure and a core function can return the trip
given its id.

The get_trip_* ops won't be needed anymore and could be removed. The
resulting code will be another step forward to a self encapsulated
generic thermal framework.

Most of the drivers can be converted more or less easily. This series
does a first round with most of the drivers. Some remain and will be
converted but with a smaller set of changes as the conversion is a bit
more complex.

Changelog:
v7:
- Added missing return 0 in the x86_pkg_temp driver
v6:
- Improved the code for the get_crit_temp() function as suggested by Rafael
- Removed inner parenthesis in the set_trip_temp() function and invert the
conditions. Check the type of the trip point is unchanged
- Folded patch 4 with 1
- Add per thermal zone info message in the bang-bang governor
- Folded the fix for an uninitialized variable in int340x_thermal_zone_add()
v5:
- Fixed a deadlock when calling thermal_zone_get_trip() while
handling the thermal zone lock
- Remove an extra line in the sysfs change
- Collected tags
v4:
- Remove extra lines on exynos changes as reported by Krzysztof Kozlowski
- Collected tags
v3:
- Reorg the series to be git-bisect safe
- Added the set_trip generic function
- Added the get_crit_temp generic function
- Removed more dead code in the thermal-of
- Fixed the exynos changelog
- Fixed the error check for the exynos drivers
- Collected tags
v2:
- Added missing EXPORT_SYMBOL_GPL() for thermal_zone_get_trip()
- Removed tab whitespace in the acerhdf driver
- Collected tags

Cc: Raju Rangoju <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Eric Dumazet <[email protected]>
Cc: Jakub Kicinski <[email protected]>
Cc: Paolo Abeni <[email protected]>
Cc: Peter Kaestle <[email protected]>
Cc: Hans de Goede <[email protected]>
Cc: Mark Gross <[email protected]>
Cc: Miquel Raynal <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>
Cc: Daniel Lezcano <[email protected]>
Cc: Amit Kucheria <[email protected]>
Cc: Zhang Rui <[email protected]>
Cc: Nicolas Saenz Julienne <[email protected]>
Cc: Broadcom Kernel Team <[email protected]>
Cc: Florian Fainelli <[email protected]>
Cc: Ray Jui <[email protected]>
Cc: Scott Branden <[email protected]>
Cc: Support Opensource <[email protected]>
Cc: Lukasz Luba <[email protected]>
Cc: Shawn Guo <[email protected]>
Cc: Sascha Hauer <[email protected]>
Cc: Pengutronix Kernel Team <[email protected]>
Cc: Fabio Estevam <[email protected]>
Cc: NXP Linux Team <[email protected]>
Cc: Thara Gopinath <[email protected]>
Cc: Andy Gross <[email protected]>
Cc: Bjorn Andersson <[email protected]>
Cc: "Niklas Söderlund" <[email protected]>
Cc: Bartlomiej Zolnierkiewicz <[email protected]>
Cc: Krzysztof Kozlowski <[email protected]>
Cc: Alim Akhtar <[email protected]>
Cc: Thierry Reding <[email protected]>
Cc: Jonathan Hunter <[email protected]>
Cc: Eduardo Valentin <[email protected]>
Cc: Keerthy <[email protected]>
Cc: Kunihiko Hayashi <[email protected]>
Cc: Masami Hiramatsu <[email protected]>
Cc: Antoine Tenart <[email protected]>
Cc: Srinivas Pandruvada <[email protected]>
Cc: Dmitry Osipenko <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]

Daniel Lezcano (29):
thermal/core: Add a generic thermal_zone_get_trip() function
thermal/sysfs: Always expose hysteresis attributes
thermal/core: Add a generic thermal_zone_set_trip() function
thermal/core/governors: Use thermal_zone_get_trip() instead of ops
functions
thermal/of: Use generic thermal_zone_get_trip() function
thermal/of: Remove unused functions
thermal/drivers/exynos: Use generic thermal_zone_get_trip() function
thermal/drivers/exynos: of_thermal_get_ntrips()
thermal/drivers/exynos: Replace of_thermal_is_trip_valid() by
thermal_zone_get_trip()
thermal/drivers/tegra: Use generic thermal_zone_get_trip() function
thermal/drivers/uniphier: Use generic thermal_zone_get_trip() function
thermal/drivers/hisi: Use generic thermal_zone_get_trip() function
thermal/drivers/qcom: Use generic thermal_zone_get_trip() function
thermal/drivers/armada: Use generic thermal_zone_get_trip() function
thermal/drivers/rcar_gen3: Use the generic function to get the number
of trips
thermal/of: Remove of_thermal_get_ntrips()
thermal/of: Remove of_thermal_is_trip_valid()
thermal/of: Remove of_thermal_set_trip_hyst()
thermal/of: Remove of_thermal_get_crit_temp()
thermal/drivers/st: Use generic trip points
thermal/drivers/imx: Use generic thermal_zone_get_trip() function
thermal/drivers/rcar: Use generic thermal_zone_get_trip() function
thermal/drivers/broadcom: Use generic thermal_zone_get_trip() function
thermal/drivers/da9062: Use generic thermal_zone_get_trip() function
thermal/drivers/ti: Remove unused macros ti_thermal_get_trip_value() /
ti_thermal_trip_is_valid()
thermal/drivers/acerhdf: Use generic thermal_zone_get_trip() function
thermal/drivers/cxgb4: Use generic thermal_zone_get_trip() function
thermal/intel/int340x: Replace parameter to simplify
thermal/drivers/intel: Use generic thermal_zone_get_trip() function

drivers/net/ethernet/chelsio/cxgb4/cxgb4.h | 2 -
.../ethernet/chelsio/cxgb4/cxgb4_thermal.c | 41 +----
drivers/platform/x86/acerhdf.c | 73 +++-----
drivers/thermal/armada_thermal.c | 39 ++---
drivers/thermal/broadcom/bcm2835_thermal.c | 8 +-
drivers/thermal/da9062-thermal.c | 52 +-----
drivers/thermal/gov_bang_bang.c | 39 +++--
drivers/thermal/gov_fair_share.c | 18 +-
drivers/thermal/gov_power_allocator.c | 51 +++---
drivers/thermal/gov_step_wise.c | 22 ++-
drivers/thermal/hisi_thermal.c | 11 +-
drivers/thermal/imx_thermal.c | 72 +++-----
.../int340x_thermal/int340x_thermal_zone.c | 33 ++--
.../int340x_thermal/int340x_thermal_zone.h | 4 +-
.../processor_thermal_device.c | 10 +-
drivers/thermal/intel/x86_pkg_temp_thermal.c | 120 +++++++------
drivers/thermal/qcom/qcom-spmi-temp-alarm.c | 39 ++---
drivers/thermal/rcar_gen3_thermal.c | 2 +-
drivers/thermal/rcar_thermal.c | 53 +-----
drivers/thermal/samsung/exynos_tmu.c | 57 +++----
drivers/thermal/st/st_thermal.c | 47 +----
drivers/thermal/tegra/soctherm.c | 33 ++--
drivers/thermal/tegra/tegra30-tsensor.c | 17 +-
drivers/thermal/thermal_core.c | 161 +++++++++++++++---
drivers/thermal/thermal_core.h | 24 +--
drivers/thermal/thermal_helpers.c | 28 +--
drivers/thermal/thermal_netlink.c | 21 +--
drivers/thermal/thermal_of.c | 116 -------------
drivers/thermal/thermal_sysfs.c | 133 +++++----------
drivers/thermal/ti-soc-thermal/ti-thermal.h | 15 --
drivers/thermal/uniphier_thermal.c | 27 ++-
include/linux/thermal.h | 10 ++
32 files changed, 560 insertions(+), 818 deletions(-)

--
2.34.1

2022-09-28 21:04:01

by Daniel Lezcano

[permalink] [raw]

Subject: [PATCH v7 05/29] thermal/of: Use generic thermal_zone_get_trip() function

The thermal framework gives the possibility to register the trip
points with the thermal zone. When that is done, no get_trip_* ops are
needed and they can be removed.

The thermal OF code uses the thermal_zone_device_register_with_trips()
function. It builds the trips array and pass it to the register
function. That means the get_trip_* ops are duplicated with what does
already the core code.

Remove them.

Signed-off-by: Daniel Lezcano <[email protected]>
---
drivers/thermal/thermal_of.c | 36 ------------------------------------
1 file changed, 36 deletions(-)

diff --git a/drivers/thermal/thermal_of.c b/drivers/thermal/thermal_of.c
index d4b6335ace15..5cce83639085 100644
--- a/drivers/thermal/thermal_of.c
+++ b/drivers/thermal/thermal_of.c
@@ -71,39 +71,6 @@ of_thermal_get_trip_points(struct thermal_zone_device *tz)
}
EXPORT_SYMBOL_GPL(of_thermal_get_trip_points);

-static int of_thermal_get_trip_type(struct thermal_zone_device *tz, int trip,
- enum thermal_trip_type *type)
-{
- if (trip >= tz->num_trips || trip < 0)
- return -EDOM;
-
- *type = tz->trips[trip].type;
-
- return 0;
-}
-
-static int of_thermal_get_trip_temp(struct thermal_zone_device *tz, int trip,
- int *temp)
-{
- if (trip >= tz->num_trips || trip < 0)
- return -EDOM;
-
- *temp = tz->trips[trip].temperature;
-
- return 0;
-}
-
-static int of_thermal_get_trip_hyst(struct thermal_zone_device *tz, int trip,
- int *hyst)
-{
- if (trip >= tz->num_trips || trip < 0)
- return -EDOM;
-
- *hyst = tz->trips[trip].hysteresis;
-
- return 0;
-}
-
static int of_thermal_set_trip_hyst(struct thermal_zone_device *tz, int trip,
int hyst)
{
@@ -626,9 +593,6 @@ struct thermal_zone_device *thermal_of_zone_register(struct device_node *sensor,
goto out_kfree_trips;
}

- of_ops->get_trip_type = of_ops->get_trip_type ? : of_thermal_get_trip_type;
- of_ops->get_trip_temp = of_ops->get_trip_temp ? : of_thermal_get_trip_temp;
- of_ops->get_trip_hyst = of_ops->get_trip_hyst ? : of_thermal_get_trip_hyst;
of_ops->set_trip_hyst = of_ops->set_trip_hyst ? : of_thermal_set_trip_hyst;
of_ops->get_crit_temp = of_ops->get_crit_temp ? : of_thermal_get_crit_temp;
of_ops->bind = thermal_of_bind;
--
2.34.1

2022-09-28 21:15:33

by Daniel Lezcano

[permalink] [raw]

Subject: [PATCH v7 27/29] thermal/drivers/cxgb4: Use generic thermal_zone_get_trip() function

2022-09-28 21:15:33

by Daniel Lezcano

[permalink] [raw]

Subject: [PATCH v7 08/29] thermal/drivers/exynos: of_thermal_get_ntrips()

The thermal core framework allows to get the number of thermal trips,
use it instead of visiting the thermal core structure internals.

Signed-off-by: Daniel Lezcano <[email protected]>
Reviewed-by: Krzysztof Kozlowski <[email protected]>
---
drivers/thermal/samsung/exynos_tmu.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
index 0e33d32a9d2e..91e6860b5ec4 100644
--- a/drivers/thermal/samsung/exynos_tmu.c
+++ b/drivers/thermal/samsung/exynos_tmu.c
@@ -260,6 +260,7 @@ static int exynos_tmu_initialize(struct platform_device *pdev)
{
struct exynos_tmu_data *data = platform_get_drvdata(pdev);
struct thermal_zone_device *tzd = data->tzd;
+ int num_trips = thermal_zone_get_num_trips(tzd);
unsigned int status;
int ret = 0, temp;

@@ -271,12 +272,12 @@ static int exynos_tmu_initialize(struct platform_device *pdev)
goto out;
}

- if (of_thermal_get_ntrips(tzd) > data->ntrip) {
+ if (num_trips > data->ntrip) {
dev_info(&pdev->dev,
"More trip points than supported by this TMU.\n");
dev_info(&pdev->dev,
"%d trip points should be configured in polling mode.\n",
- (of_thermal_get_ntrips(tzd) - data->ntrip));
+ num_trips - data->ntrip);
}

mutex_lock(&data->lock);
@@ -289,7 +290,7 @@ static int exynos_tmu_initialize(struct platform_device *pdev)
ret = -EBUSY;
} else {
int i, ntrips =
- min_t(int, of_thermal_get_ntrips(tzd), data->ntrip);
+ min_t(int, num_trips, data->ntrip);

data->tmu_initialize(pdev);

--
2.34.1

2022-09-28 21:17:10

by Daniel Lezcano

[permalink] [raw]

Subject: [PATCH v7 16/29] thermal/of: Remove of_thermal_get_ntrips()

The thermal OF code uses the generic trip points to initialize the
thermal zone. Consequently thermal_zone_get_num_trips() can be used
and the of_thermal_get_ntrips() is no longer needed. Remove it.

Signed-off-by: Daniel Lezcano <[email protected]>
---
drivers/thermal/thermal_core.h | 5 -----
drivers/thermal/thermal_of.c | 16 ----------------
2 files changed, 21 deletions(-)

diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h
index c5990a3fcf8a..b00fc1913734 100644
--- a/drivers/thermal/thermal_core.h
+++ b/drivers/thermal/thermal_core.h
@@ -139,13 +139,8 @@ thermal_cooling_device_stats_update(struct thermal_cooling_device *cdev,

/* device tree support */
#ifdef CONFIG_THERMAL_OF
-int of_thermal_get_ntrips(struct thermal_zone_device *);
bool of_thermal_is_trip_valid(struct thermal_zone_device *, int);
#else
-static inline int of_thermal_get_ntrips(struct thermal_zone_device *tz)
-{
- return 0;
-}
static inline bool of_thermal_is_trip_valid(struct thermal_zone_device *tz,
int trip)
{
diff --git a/drivers/thermal/thermal_of.c b/drivers/thermal/thermal_of.c
index 2f533fc94917..89afa59c4915 100644
--- a/drivers/thermal/thermal_of.c
+++ b/drivers/thermal/thermal_of.c
@@ -19,22 +19,6 @@

#include "thermal_core.h"

-/**
- * of_thermal_get_ntrips - function to export number of available trip
- * points.
- * @tz: pointer to a thermal zone
- *
- * This function is a globally visible wrapper to get number of trip points
- * stored in the local struct __thermal_zone
- *
- * Return: number of available trip points, -ENODEV when data not available
- */
-int of_thermal_get_ntrips(struct thermal_zone_device *tz)
-{
- return tz->num_trips;
-}
-EXPORT_SYMBOL_GPL(of_thermal_get_ntrips);
-
/**
* of_thermal_is_trip_valid - function to check if trip point is valid
*
--
2.34.1

2022-09-28 21:20:17

by Daniel Lezcano

[permalink] [raw]

Subject: [PATCH v7 13/29] thermal/drivers/qcom: Use generic thermal_zone_get_trip() function

2022-09-28 21:22:36

by Daniel Lezcano

[permalink] [raw]

Subject: [PATCH v7 18/29] thermal/of: Remove of_thermal_set_trip_hyst()

The thermal core is providing the generic thermal_zone_set_trip()
function which does exactly what the OF ops function is doing.

It is pointless to define our own version, just remove the ops and the
thermal_zone_set_trip() will take care of it.

Signed-off-by: Daniel Lezcano <[email protected]>
---
drivers/thermal/thermal_of.c | 13 -------------
1 file changed, 13 deletions(-)

diff --git a/drivers/thermal/thermal_of.c b/drivers/thermal/thermal_of.c
index 4e54d62720dc..494e9c319541 100644
--- a/drivers/thermal/thermal_of.c
+++ b/drivers/thermal/thermal_of.c
@@ -19,18 +19,6 @@

#include "thermal_core.h"

-static int of_thermal_set_trip_hyst(struct thermal_zone_device *tz, int trip,
- int hyst)
-{
- if (trip >= tz->num_trips || trip < 0)
- return -EDOM;
-
- /* thermal framework should take care of data->mask & (1 << trip) */
- tz->trips[trip].hysteresis = hyst;
-
- return 0;
-}
-
static int of_thermal_get_crit_temp(struct thermal_zone_device *tz,
int *temp)
{
@@ -541,7 +529,6 @@ struct thermal_zone_device *thermal_of_zone_register(struct device_node *sensor,
goto out_kfree_trips;
}

- of_ops->set_trip_hyst = of_ops->set_trip_hyst ? : of_thermal_set_trip_hyst;
of_ops->get_crit_temp = of_ops->get_crit_temp ? : of_thermal_get_crit_temp;
of_ops->bind = thermal_of_bind;
of_ops->unbind = thermal_of_unbind;
--
2.34.1

2022-09-28 21:26:15

by Daniel Lezcano

[permalink] [raw]

Subject: [PATCH v7 24/29] thermal/drivers/da9062: Use generic thermal_zone_get_trip() function

2022-09-28 21:31:59

by Daniel Lezcano

[permalink] [raw]

Subject: [PATCH v7 17/29] thermal/of: Remove of_thermal_is_trip_valid()

There is no benefit with the of_thermal_is_trip_valid() function as it
does the check the thermal_zone_get_trip() is already doing for the
sake of getting the trip point.

As all the calls have been replaced by thermal_zone_get_trip(), there
is no more users of of_thermal_is_trip_valid().

Remove the function.

Signed-off-by: Daniel Lezcano <[email protected]>
---
drivers/thermal/thermal_core.h | 10 ----------
drivers/thermal/thermal_of.c | 19 -------------------
2 files changed, 29 deletions(-)

diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h
index b00fc1913734..e9b3af6c2084 100644
--- a/drivers/thermal/thermal_core.h
+++ b/drivers/thermal/thermal_core.h
@@ -138,16 +138,6 @@ thermal_cooling_device_stats_update(struct thermal_cooling_device *cdev,
#endif /* CONFIG_THERMAL_STATISTICS */

/* device tree support */
-#ifdef CONFIG_THERMAL_OF
-bool of_thermal_is_trip_valid(struct thermal_zone_device *, int);
-#else
-static inline bool of_thermal_is_trip_valid(struct thermal_zone_device *tz,
- int trip)
-{
- return false;
-}
-#endif
-
int thermal_zone_device_is_enabled(struct thermal_zone_device *tz);

#endif /* __THERMAL_CORE_H__ */
diff --git a/drivers/thermal/thermal_of.c b/drivers/thermal/thermal_of.c
index 89afa59c4915..4e54d62720dc 100644
--- a/drivers/thermal/thermal_of.c
+++ b/drivers/thermal/thermal_of.c
@@ -19,25 +19,6 @@

#include "thermal_core.h"

-/**
- * of_thermal_is_trip_valid - function to check if trip point is valid
- *
- * @tz: pointer to a thermal zone
- * @trip: trip point to evaluate
- *
- * This function is responsible for checking if passed trip point is valid
- *
- * Return: true if trip point is valid, false otherwise
- */
-bool of_thermal_is_trip_valid(struct thermal_zone_device *tz, int trip)
-{
- if (trip >= tz->num_trips || trip < 0)
- return false;
-
- return true;
-}
-EXPORT_SYMBOL_GPL(of_thermal_is_trip_valid);
-
static int of_thermal_set_trip_hyst(struct thermal_zone_device *tz, int trip,
int hyst)
{
--
2.34.1

2022-09-28 21:32:13

by Daniel Lezcano

[permalink] [raw]

Subject: [PATCH v7 29/29] thermal/drivers/intel: Use generic thermal_zone_get_trip() function

The thermal framework gives the possibility to register the trip
points with the thermal zone. When that is done, no get_trip_* ops are
needed and they can be removed.

Convert ops content logic into generic trip points and register them with the
thermal zone.

Signed-off-by: Daniel Lezcano <[email protected]>
Reviewed-by: Srinivas Pandruvada <[email protected]>
---
drivers/thermal/intel/x86_pkg_temp_thermal.c | 120 +++++++++++--------
1 file changed, 67 insertions(+), 53 deletions(-)

diff --git a/drivers/thermal/intel/x86_pkg_temp_thermal.c b/drivers/thermal/intel/x86_pkg_temp_thermal.c
index a0e234fce71a..40a9355207e7 100644
--- a/drivers/thermal/intel/x86_pkg_temp_thermal.c
+++ b/drivers/thermal/intel/x86_pkg_temp_thermal.c
@@ -53,6 +53,7 @@ struct zone_device {
u32 msr_pkg_therm_high;
struct delayed_work work;
struct thermal_zone_device *tzone;
+ struct thermal_trip *trips;
struct cpumask cpumask;
};

@@ -138,40 +139,6 @@ static int sys_get_curr_temp(struct thermal_zone_device *tzd, int *temp)
return -EINVAL;
}

-static int sys_get_trip_temp(struct thermal_zone_device *tzd,
- int trip, int *temp)
-{
- struct zone_device *zonedev = tzd->devdata;
- unsigned long thres_reg_value;
- u32 mask, shift, eax, edx;
- int ret;
-
- if (trip >= MAX_NUMBER_OF_TRIPS)
- return -EINVAL;
-
- if (trip) {
- mask = THERM_MASK_THRESHOLD1;
- shift = THERM_SHIFT_THRESHOLD1;
- } else {
- mask = THERM_MASK_THRESHOLD0;
- shift = THERM_SHIFT_THRESHOLD0;
- }
-
- ret = rdmsr_on_cpu(zonedev->cpu, MSR_IA32_PACKAGE_THERM_INTERRUPT,
- &eax, &edx);
- if (ret < 0)
- return ret;
-
- thres_reg_value = (eax & mask) >> shift;
- if (thres_reg_value)
- *temp = zonedev->tj_max - thres_reg_value * 1000;
- else
- *temp = THERMAL_TEMP_INVALID;
- pr_debug("sys_get_trip_temp %d\n", *temp);
-
- return 0;
-}
-
static int
sys_set_trip_temp(struct thermal_zone_device *tzd, int trip, int temp)
{
@@ -212,18 +179,9 @@ sys_set_trip_temp(struct thermal_zone_device *tzd, int trip, int temp)
l, h);
}

-static int sys_get_trip_type(struct thermal_zone_device *thermal, int trip,
- enum thermal_trip_type *type)
-{
- *type = THERMAL_TRIP_PASSIVE;
- return 0;
-}
-
/* Thermal zone callback registry */
static struct thermal_zone_device_ops tzone_ops = {
.get_temp = sys_get_curr_temp,
- .get_trip_temp = sys_get_trip_temp,
- .get_trip_type = sys_get_trip_type,
.set_trip_temp = sys_set_trip_temp,
};

@@ -328,6 +286,48 @@ static int pkg_thermal_notify(u64 msr_val)
return 0;
}

+static struct thermal_trip *pkg_temp_thermal_trips_init(int cpu, int tj_max, int num_trips)
+{
+ struct thermal_trip *trips;
+ unsigned long thres_reg_value;
+ u32 mask, shift, eax, edx;
+ int ret, i;
+
+ trips = kzalloc(sizeof(*trips) * num_trips, GFP_KERNEL);
+ if (!trips)
+ return ERR_PTR(-ENOMEM);
+
+ for (i = 0; i < num_trips; i++) {
+
+ if (i) {
+ mask = THERM_MASK_THRESHOLD1;
+ shift = THERM_SHIFT_THRESHOLD1;
+ } else {
+ mask = THERM_MASK_THRESHOLD0;
+ shift = THERM_SHIFT_THRESHOLD0;
+ }
+
+ ret = rdmsr_on_cpu(cpu, MSR_IA32_PACKAGE_THERM_INTERRUPT,
+ &eax, &edx);
+ if (ret < 0) {
+ kfree(trips);
+ return ERR_PTR(ret);
+ }
+
+ thres_reg_value = (eax & mask) >> shift;
+
+ trips[i].temperature = thres_reg_value ?
+ tj_max - thres_reg_value * 1000 : THERMAL_TEMP_INVALID;
+
+ trips[i].type = THERMAL_TRIP_PASSIVE;
+
+ pr_debug("%s: cpu=%d, trip=%d, temp=%d\n",
+ __func__, cpu, i, trips[i].temperature);
+ }
+
+ return trips;
+}
+
static int pkg_temp_thermal_device_add(unsigned int cpu)
{
int id = topology_logical_die_id(cpu);
@@ -353,24 +353,27 @@ static int pkg_temp_thermal_device_add(unsigned int cpu)
if (!zonedev)
return -ENOMEM;

+ zonedev->trips = pkg_temp_thermal_trips_init(cpu, tj_max, thres_count);
+ if (IS_ERR(zonedev->trips)) {
+ err = PTR_ERR(zonedev->trips);
+ goto out_kfree_zonedev;
+ }
+
INIT_DELAYED_WORK(&zonedev->work, pkg_temp_thermal_threshold_work_fn);
zonedev->cpu = cpu;
zonedev->tj_max = tj_max;
- zonedev->tzone = thermal_zone_device_register("x86_pkg_temp",
- thres_count,
+ zonedev->tzone = thermal_zone_device_register_with_trips("x86_pkg_temp",
+ zonedev->trips, thres_count,
(thres_count == MAX_NUMBER_OF_TRIPS) ? 0x03 : 0x01,
zonedev, &tzone_ops, &pkg_temp_tz_params, 0, 0);
if (IS_ERR(zonedev->tzone)) {
err = PTR_ERR(zonedev->tzone);
- kfree(zonedev);
- return err;
+ goto out_kfree_trips;
}
err = thermal_zone_device_enable(zonedev->tzone);
- if (err) {
- thermal_zone_device_unregister(zonedev->tzone);
- kfree(zonedev);
- return err;
- }
+ if (err)
+ goto out_unregister_tz;
+
/* Store MSR value for package thermal interrupt, to restore at exit */
rdmsr(MSR_IA32_PACKAGE_THERM_INTERRUPT, zonedev->msr_pkg_therm_low,
zonedev->msr_pkg_therm_high);
@@ -379,7 +382,16 @@ static int pkg_temp_thermal_device_add(unsigned int cpu)
raw_spin_lock_irq(&pkg_temp_lock);
zones[id] = zonedev;
raw_spin_unlock_irq(&pkg_temp_lock);
+
return 0;
+
+out_unregister_tz:
+ thermal_zone_device_unregister(zonedev->tzone);
+out_kfree_trips:
+ kfree(zonedev->trips);
+out_kfree_zonedev:
+ kfree(zonedev);
+ return err;
}

static int pkg_thermal_cpu_offline(unsigned int cpu)
@@ -463,8 +475,10 @@ static int pkg_thermal_cpu_offline(unsigned int cpu)
raw_spin_unlock_irq(&pkg_temp_lock);

/* Final cleanup if this is the last cpu */
- if (lastcpu)
+ if (lastcpu) {
+ kfree(zonedev->trips);
kfree(zonedev);
+ }
return 0;
}

--
2.34.1

2022-09-28 21:34:11

by Daniel Lezcano

[permalink] [raw]

Subject: [PATCH v7 03/29] thermal/core: Add a generic thermal_zone_set_trip() function

The thermal zone ops defines a set_trip callback where we can invoke
the backend driver to set an interrupt for the next trip point
temperature being crossed the way up or down, or setting the low level
with the hysteresis.

The ops is only called from the thermal sysfs code where the userspace
has the ability to modify a trip point characteristic.

With the effort of encapsulating the thermal framework core code,
let's create a thermal_zone_set_trip() which is the writable side of
the thermal_zone_get_trip() and put there all the ops encapsulation.

Signed-off-by: Daniel Lezcano <[email protected]>
---
drivers/thermal/thermal_core.c | 47 +++++++++++++++++++++++++++++
drivers/thermal/thermal_sysfs.c | 52 +++++++++++----------------------
include/linux/thermal.h | 3 ++
3 files changed, 67 insertions(+), 35 deletions(-)

diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index 16ef91dc102f..2675671781cd 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -1211,6 +1211,53 @@ int thermal_zone_get_trip(struct thermal_zone_device *tz, int trip_id,
}
EXPORT_SYMBOL_GPL(thermal_zone_get_trip);

+int thermal_zone_set_trip(struct thermal_zone_device *tz, int trip_id,
+ const struct thermal_trip *trip)
+{
+ struct thermal_trip t;
+ int ret = -EINVAL;
+
+ mutex_lock(&tz->lock);
+
+ if (!tz->ops->set_trip_temp && !tz->ops->set_trip_hyst && !tz->trips)
+ goto out;
+
+ ret = __thermal_zone_get_trip(tz, trip_id, &t);
+ if (ret)
+ goto out;
+
+ if (t.type != trip->type) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (t.temperature != trip->temperature && tz->ops->set_trip_temp) {
+ ret = tz->ops->set_trip_temp(tz, trip_id, trip->temperature);
+ if (ret)
+ goto out;
+ }
+
+ if (t.hysteresis != trip->hysteresis && tz->ops->set_trip_hyst) {
+ ret = tz->ops->set_trip_hyst(tz, trip_id, trip->hysteresis);
+ if (ret)
+ goto out;
+ }
+
+ if (tz->trips && ((t.temperature != trip->temperature) ||
+ (t.hysteresis != trip->hysteresis)))
+ tz->trips[trip_id] = *trip;
+out:
+ mutex_unlock(&tz->lock);
+
+ if (!ret) {
+ thermal_notify_tz_trip_change(tz->id, trip_id, trip->type,
+ trip->temperature, trip->hysteresis);
+ thermal_zone_device_update(tz, THERMAL_TRIP_CHANGED);
+ }
+
+ return ret;
+}
+
/**
* thermal_zone_device_register_with_trips() - register a new thermal zone device
* @type: the thermal zone device type
diff --git a/drivers/thermal/thermal_sysfs.c b/drivers/thermal/thermal_sysfs.c
index 6c45194aaabb..8d7b25ab67c2 100644
--- a/drivers/thermal/thermal_sysfs.c
+++ b/drivers/thermal/thermal_sysfs.c
@@ -115,32 +115,19 @@ trip_point_temp_store(struct device *dev, struct device_attribute *attr,
struct thermal_trip trip;
int trip_id, ret;

- if (!tz->ops->set_trip_temp && !tz->trips)
- return -EPERM;
-
if (sscanf(attr->attr.name, "trip_point_%d_temp", &trip_id) != 1)
return -EINVAL;

- if (kstrtoint(buf, 10, &trip.temperature))
- return -EINVAL;
-
- if (tz->ops->set_trip_temp) {
- ret = tz->ops->set_trip_temp(tz, trip_id, trip.temperature);
- if (ret)
- return ret;
- }
-
- if (tz->trips)
- tz->trips[trip_id].temperature = trip.temperature;
-
ret = thermal_zone_get_trip(tz, trip_id, &trip);
if (ret)
return ret;

- thermal_notify_tz_trip_change(tz->id, trip_id, trip.type,
- trip.temperature, trip.hysteresis);
+ if (kstrtoint(buf, 10, &trip.temperature))
+ return -EINVAL;

- thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
+ ret = thermal_zone_set_trip(tz, trip_id, &trip);
+ if (ret)
+ return ret;

return count;
}
@@ -168,29 +155,24 @@ trip_point_hyst_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct thermal_zone_device *tz = to_thermal_zone(dev);
- int trip, ret;
- int temperature;
-
- if (!tz->ops->set_trip_hyst)
- return -EPERM;
+ struct thermal_trip trip;
+ int trip_id, ret;

- if (sscanf(attr->attr.name, "trip_point_%d_hyst", &trip) != 1)
+ if (sscanf(attr->attr.name, "trip_point_%d_hyst", &trip_id) != 1)
return -EINVAL;

- if (kstrtoint(buf, 10, &temperature))
- return -EINVAL;
+ ret = thermal_zone_get_trip(tz, trip_id, &trip);
+ if (ret)
+ return ret;

- /*
- * We are not doing any check on the 'temperature' value
- * here. The driver implementing 'set_trip_hyst' has to
- * take care of this.
- */
- ret = tz->ops->set_trip_hyst(tz, trip, temperature);
+ if (kstrtoint(buf, 10, &trip.hysteresis))
+ return -EINVAL;

- if (!ret)
- thermal_zone_set_trips(tz);
+ ret = thermal_zone_set_trip(tz, trip_id, &trip);
+ if (ret)
+ return ret;

- return ret ? ret : count;
+ return count;
}

static ssize_t
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index feb8b61df746..66373f872237 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -338,6 +338,9 @@ static inline void devm_thermal_of_zone_unregister(struct device *dev,
int thermal_zone_get_trip(struct thermal_zone_device *tz, int trip_id,
struct thermal_trip *trip);

+int thermal_zone_set_trip(struct thermal_zone_device *tz, int trip_id,
+ const struct thermal_trip *trip);
+
int thermal_zone_get_num_trips(struct thermal_zone_device *tz);

int thermal_zone_get_crit_temp(struct thermal_zone_device *tz, int *temp);
--
2.34.1

2022-09-28 21:35:18

by Daniel Lezcano

[permalink] [raw]

Subject: [PATCH v7 22/29] thermal/drivers/rcar: Use generic thermal_zone_get_trip() function

2022-09-28 21:35:37

by Daniel Lezcano

[permalink] [raw]

Subject: [PATCH v7 19/29] thermal/of: Remove of_thermal_get_crit_temp()

The generic version of of_thermal_get_crit_temp() can be used. Let's
remove this ops which is pointless.

Signed-off-by: Daniel Lezcano <[email protected]>
---
drivers/thermal/thermal_of.c | 15 ---------------
1 file changed, 15 deletions(-)

diff --git a/drivers/thermal/thermal_of.c b/drivers/thermal/thermal_of.c
index 494e9c319541..bd872183e521 100644
--- a/drivers/thermal/thermal_of.c
+++ b/drivers/thermal/thermal_of.c
@@ -19,20 +19,6 @@

#include "thermal_core.h"

-static int of_thermal_get_crit_temp(struct thermal_zone_device *tz,
- int *temp)
-{
- int i;
-
- for (i = 0; i < tz->num_trips; i++)
- if (tz->trips[i].type == THERMAL_TRIP_CRITICAL) {
- *temp = tz->trips[i].temperature;
- return 0;
- }
-
- return -EINVAL;
-}
-
/*** functions parsing device tree nodes ***/

static int of_find_trip_id(struct device_node *np, struct device_node *trip)
@@ -529,7 +515,6 @@ struct thermal_zone_device *thermal_of_zone_register(struct device_node *sensor,
goto out_kfree_trips;
}

- of_ops->get_crit_temp = of_ops->get_crit_temp ? : of_thermal_get_crit_temp;
of_ops->bind = thermal_of_bind;
of_ops->unbind = thermal_of_unbind;

--
2.34.1

2022-09-28 21:35:49

by Daniel Lezcano

[permalink] [raw]

Subject: [PATCH v7 12/29] thermal/drivers/hisi: Use generic thermal_zone_get_trip() function

2022-09-28 21:37:17

by Daniel Lezcano

[permalink] [raw]

Subject: [PATCH v7 26/29] thermal/drivers/acerhdf: Use generic thermal_zone_get_trip() function

2022-09-28 21:37:37

by Daniel Lezcano

[permalink] [raw]

Subject: [PATCH v7 25/29] thermal/drivers/ti: Remove unused macros ti_thermal_get_trip_value() / ti_thermal_trip_is_valid()

The macros:

ti_thermal_get_trip_value()
ti_thermal_trip_is_valid()

are unused. Remove them.

Signed-off-by: Daniel Lezcano <[email protected]>
---
drivers/thermal/ti-soc-thermal/ti-thermal.h | 15 ---------------
1 file changed, 15 deletions(-)

diff --git a/drivers/thermal/ti-soc-thermal/ti-thermal.h b/drivers/thermal/ti-soc-thermal/ti-thermal.h
index c388ecf31834..4fd2c20182d7 100644
--- a/drivers/thermal/ti-soc-thermal/ti-thermal.h
+++ b/drivers/thermal/ti-soc-thermal/ti-thermal.h
@@ -38,21 +38,6 @@
/* Update rates */
#define FAST_TEMP_MONITORING_RATE 250

-/* helper macros */
-/**
- * ti_thermal_get_trip_value - returns trip temperature based on index
- * @i: trip index
- */
-#define ti_thermal_get_trip_value(i) \
- (OMAP_TRIP_HOT + ((i) * OMAP_TRIP_STEP))
-
-/**
- * ti_thermal_is_valid_trip - check for trip index
- * @i: trip index
- */
-#define ti_thermal_is_valid_trip(trip) \
- ((trip) >= 0 && (trip) < OMAP_TRIP_NUMBER)
-
#ifdef CONFIG_TI_THERMAL
int ti_thermal_expose_sensor(struct ti_bandgap *bgp, int id, char *domain);
int ti_thermal_remove_sensor(struct ti_bandgap *bgp, int id);
--
2.34.1

2022-09-28 21:37:46

by Daniel Lezcano

[permalink] [raw]

Subject: [PATCH v7 14/29] thermal/drivers/armada: Use generic thermal_zone_get_trip() function

2022-09-28 21:38:29

by Daniel Lezcano

[permalink] [raw]

Subject: [PATCH v7 23/29] thermal/drivers/broadcom: Use generic thermal_zone_get_trip() function

2022-09-28 21:38:41

by Daniel Lezcano

[permalink] [raw]

Subject: [PATCH v7 06/29] thermal/of: Remove unused functions

Remove the dead code: of_thermal_get_trip_points()

Signed-off-by: Daniel Lezcano <[email protected]>
---
drivers/thermal/thermal_core.h | 7 -------
drivers/thermal/thermal_of.c | 17 -----------------
2 files changed, 24 deletions(-)

diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h
index 879e91a48435..c5990a3fcf8a 100644
--- a/drivers/thermal/thermal_core.h
+++ b/drivers/thermal/thermal_core.h
@@ -141,8 +141,6 @@ thermal_cooling_device_stats_update(struct thermal_cooling_device *cdev,
#ifdef CONFIG_THERMAL_OF
int of_thermal_get_ntrips(struct thermal_zone_device *);
bool of_thermal_is_trip_valid(struct thermal_zone_device *, int);
-const struct thermal_trip *
-of_thermal_get_trip_points(struct thermal_zone_device *);
#else
static inline int of_thermal_get_ntrips(struct thermal_zone_device *tz)
{
@@ -153,11 +151,6 @@ static inline bool of_thermal_is_trip_valid(struct thermal_zone_device *tz,
{
return false;
}
-static inline const struct thermal_trip *
-of_thermal_get_trip_points(struct thermal_zone_device *tz)
-{
- return NULL;
-}
#endif

int thermal_zone_device_is_enabled(struct thermal_zone_device *tz);
diff --git a/drivers/thermal/thermal_of.c b/drivers/thermal/thermal_of.c
index 5cce83639085..2f533fc94917 100644
--- a/drivers/thermal/thermal_of.c
+++ b/drivers/thermal/thermal_of.c
@@ -54,23 +54,6 @@ bool of_thermal_is_trip_valid(struct thermal_zone_device *tz, int trip)
}
EXPORT_SYMBOL_GPL(of_thermal_is_trip_valid);

-/**
- * of_thermal_get_trip_points - function to get access to a globally exported
- * trip points
- *
- * @tz: pointer to a thermal zone
- *
- * This function provides a pointer to trip points table
- *
- * Return: pointer to trip points table, NULL otherwise
- */
-const struct thermal_trip *
-of_thermal_get_trip_points(struct thermal_zone_device *tz)
-{
- return tz->trips;
-}
-EXPORT_SYMBOL_GPL(of_thermal_get_trip_points);
-
static int of_thermal_set_trip_hyst(struct thermal_zone_device *tz, int trip,
int hyst)
{
--
2.34.1

2022-09-28 21:39:04

by Daniel Lezcano

[permalink] [raw]

Subject: [PATCH v7 15/29] thermal/drivers/rcar_gen3: Use the generic function to get the number of trips

2022-09-28 21:39:23

by Daniel Lezcano

[permalink] [raw]

Subject: [PATCH v7 28/29] thermal/intel/int340x: Replace parameter to simplify

In the process of replacing the get_trip_* ops by the generic trip
points, the current code has an 'override' property to add another
indirection to a different ops.

Rework this approach to prevent this indirection and make the code
ready for the generic trip points conversion.

Actually the get_temp() is different regarding the platform, so it is
pointless to add a new set of ops but just create dynamically the ops
at init time.

Signed-off-by: Daniel Lezcano <[email protected]>
Reviewed-by: Srinivas Pandruvada <[email protected]>
---
.../int340x_thermal/int340x_thermal_zone.c | 33 +++++++++----------
.../int340x_thermal/int340x_thermal_zone.h | 4 +--
.../processor_thermal_device.c | 10 ++----
3 files changed, 20 insertions(+), 27 deletions(-)

diff --git a/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c b/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c
index 62c0aa5d0783..66cd50e0b50a 100644
--- a/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c
+++ b/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c
@@ -18,9 +18,6 @@ static int int340x_thermal_get_zone_temp(struct thermal_zone_device *zone,
unsigned long long tmp;
acpi_status status;

- if (d->override_ops && d->override_ops->get_temp)
- return d->override_ops->get_temp(zone, temp);
-
status = acpi_evaluate_integer(d->adev->handle, "_TMP", NULL, &tmp);
if (ACPI_FAILURE(status))
return -EIO;
@@ -46,9 +43,6 @@ static int int340x_thermal_get_trip_temp(struct thermal_zone_device *zone,
struct int34x_thermal_zone *d = zone->devdata;
int i;

- if (d->override_ops && d->override_ops->get_trip_temp)
- return d->override_ops->get_trip_temp(zone, trip, temp);
-
if (trip < d->aux_trip_nr)
*temp = d->aux_trips[trip];
else if (trip == d->crt_trip_id)
@@ -79,9 +73,6 @@ static int int340x_thermal_get_trip_type(struct thermal_zone_device *zone,
struct int34x_thermal_zone *d = zone->devdata;
int i;

- if (d->override_ops && d->override_ops->get_trip_type)
- return d->override_ops->get_trip_type(zone, trip, type);
-
if (trip < d->aux_trip_nr)
*type = THERMAL_TRIP_PASSIVE;
else if (trip == d->crt_trip_id)
@@ -112,9 +103,6 @@ static int int340x_thermal_set_trip_temp(struct thermal_zone_device *zone,
acpi_status status;
char name[10];

- if (d->override_ops && d->override_ops->set_trip_temp)
- return d->override_ops->set_trip_temp(zone, trip, temp);
-
snprintf(name, sizeof(name), "PAT%d", trip);
status = acpi_execute_simple_method(d->adev->handle, name,
millicelsius_to_deci_kelvin(temp));
@@ -134,9 +122,6 @@ static int int340x_thermal_get_trip_hyst(struct thermal_zone_device *zone,
acpi_status status;
unsigned long long hyst;

- if (d->override_ops && d->override_ops->get_trip_hyst)
- return d->override_ops->get_trip_hyst(zone, trip, temp);
-
status = acpi_evaluate_integer(d->adev->handle, "GTSH", NULL, &hyst);
if (ACPI_FAILURE(status))
*temp = 0;
@@ -217,7 +202,7 @@ static struct thermal_zone_params int340x_thermal_params = {
};

struct int34x_thermal_zone *int340x_thermal_zone_add(struct acpi_device *adev,
- struct thermal_zone_device_ops *override_ops)
+ int (*get_temp) (struct thermal_zone_device *, int *))
{
struct int34x_thermal_zone *int34x_thermal_zone;
acpi_status status;
@@ -231,8 +216,17 @@ struct int34x_thermal_zone *int340x_thermal_zone_add(struct acpi_device *adev,
return ERR_PTR(-ENOMEM);

int34x_thermal_zone->adev = adev;
- int34x_thermal_zone->override_ops = override_ops;

+ int34x_thermal_zone->ops = kmemdup(&int340x_thermal_zone_ops,
+ sizeof(int340x_thermal_zone_ops), GFP_KERNEL);
+ if (!int34x_thermal_zone->ops) {
+ ret = -ENOMEM;
+ goto err_ops_alloc;
+ }
+
+ if (get_temp)
+ int34x_thermal_zone->ops->get_temp = get_temp;
+
status = acpi_evaluate_integer(adev->handle, "PATC", NULL, &trip_cnt);
if (ACPI_FAILURE(status))
trip_cnt = 0;
@@ -262,7 +256,7 @@ struct int34x_thermal_zone *int340x_thermal_zone_add(struct acpi_device *adev,
acpi_device_bid(adev),
trip_cnt,
trip_mask, int34x_thermal_zone,
- &int340x_thermal_zone_ops,
+ int34x_thermal_zone->ops,
&int340x_thermal_params,
0, 0);
if (IS_ERR(int34x_thermal_zone->zone)) {
@@ -281,6 +275,8 @@ struct int34x_thermal_zone *int340x_thermal_zone_add(struct acpi_device *adev,
acpi_lpat_free_conversion_table(int34x_thermal_zone->lpat_table);
kfree(int34x_thermal_zone->aux_trips);
err_trip_alloc:
+ kfree(int34x_thermal_zone->ops);
+err_ops_alloc:
kfree(int34x_thermal_zone);
return ERR_PTR(ret);
}
@@ -292,6 +288,7 @@ void int340x_thermal_zone_remove(struct int34x_thermal_zone
thermal_zone_device_unregister(int34x_thermal_zone->zone);
acpi_lpat_free_conversion_table(int34x_thermal_zone->lpat_table);
kfree(int34x_thermal_zone->aux_trips);
+ kfree(int34x_thermal_zone->ops);
kfree(int34x_thermal_zone);
}
EXPORT_SYMBOL_GPL(int340x_thermal_zone_remove);
diff --git a/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.h b/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.h
index 3b4971df1b33..e28ab1ba5e06 100644
--- a/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.h
+++ b/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.h
@@ -29,13 +29,13 @@ struct int34x_thermal_zone {
int hot_temp;
int hot_trip_id;
struct thermal_zone_device *zone;
- struct thermal_zone_device_ops *override_ops;
+ struct thermal_zone_device_ops *ops;
void *priv_data;
struct acpi_lpat_conversion_table *lpat_table;
};

struct int34x_thermal_zone *int340x_thermal_zone_add(struct acpi_device *,
- struct thermal_zone_device_ops *override_ops);
+ int (*get_temp) (struct thermal_zone_device *, int *));
void int340x_thermal_zone_remove(struct int34x_thermal_zone *);
int int340x_thermal_read_trips(struct int34x_thermal_zone *int34x_zone);

diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c
index a8d98f1bd6c6..317703027ce9 100644
--- a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c
+++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c
@@ -207,10 +207,6 @@ static int proc_thermal_get_zone_temp(struct thermal_zone_device *zone,
return ret;
}

-static struct thermal_zone_device_ops proc_thermal_local_ops = {
- .get_temp = proc_thermal_get_zone_temp,
-};
-
static int proc_thermal_read_ppcc(struct proc_thermal_device *proc_priv)
{
int i;
@@ -285,7 +281,7 @@ int proc_thermal_add(struct device *dev, struct proc_thermal_device *proc_priv)
struct acpi_device *adev;
acpi_status status;
unsigned long long tmp;
- struct thermal_zone_device_ops *ops = NULL;
+ int (*get_temp) (struct thermal_zone_device *, int *) = NULL;
int ret;

adev = ACPI_COMPANION(dev);
@@ -304,10 +300,10 @@ int proc_thermal_add(struct device *dev, struct proc_thermal_device *proc_priv)
/* there is no _TMP method, add local method */
stored_tjmax = get_tjmax();
if (stored_tjmax > 0)
- ops = &proc_thermal_local_ops;
+ get_temp = proc_thermal_get_zone_temp;
}

- proc_priv->int340x_zone = int340x_thermal_zone_add(adev, ops);
+ proc_priv->int340x_zone = int340x_thermal_zone_add(adev, get_temp);
if (IS_ERR(proc_priv->int340x_zone)) {
return PTR_ERR(proc_priv->int340x_zone);
} else
--
2.34.1

2022-09-28 21:39:29

by Daniel Lezcano

[permalink] [raw]

Subject: [PATCH v7 21/29] thermal/drivers/imx: Use generic thermal_zone_get_trip() function

The thermal framework gives the possibility to register the trip
points with the thermal zone. When that is done, no get_trip_* ops are
needed and they can be removed.

Convert ops content logic into generic trip points and register them with the
thermal zone.

Signed-off-by: Daniel Lezcano <[email protected]>
---
drivers/thermal/imx_thermal.c | 72 +++++++++++++----------------------
1 file changed, 27 insertions(+), 45 deletions(-)

diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c
index 16663373b682..fb0d5cab70af 100644
--- a/drivers/thermal/imx_thermal.c
+++ b/drivers/thermal/imx_thermal.c
@@ -76,7 +76,6 @@
enum imx_thermal_trip {
IMX_TRIP_PASSIVE,
IMX_TRIP_CRITICAL,
- IMX_TRIP_NUM,
};

#define IMX_POLLING_DELAY 2000 /* millisecond */
@@ -115,6 +114,11 @@ struct thermal_soc_data {
u32 low_alarm_shift;
};

+static struct thermal_trip trips[] = {
+ [IMX_TRIP_PASSIVE] = { .type = THERMAL_TRIP_PASSIVE },
+ [IMX_TRIP_CRITICAL] = { .type = THERMAL_TRIP_CRITICAL },
+};
+
static struct thermal_soc_data thermal_imx6q_data = {
.version = TEMPMON_IMX6Q,

@@ -201,8 +205,6 @@ struct imx_thermal_data {
struct thermal_cooling_device *cdev;
struct regmap *tempmon;
u32 c1, c2; /* See formula in imx_init_calib() */
- int temp_passive;
- int temp_critical;
int temp_max;
int alarm_temp;
int last_temp;
@@ -279,12 +281,12 @@ static int imx_get_temp(struct thermal_zone_device *tz, int *temp)

/* Update alarm value to next higher trip point for TEMPMON_IMX6Q */
if (data->socdata->version == TEMPMON_IMX6Q) {
- if (data->alarm_temp == data->temp_passive &&
- *temp >= data->temp_passive)
- imx_set_alarm_temp(data, data->temp_critical);
- if (data->alarm_temp == data->temp_critical &&
- *temp < data->temp_passive) {
- imx_set_alarm_temp(data, data->temp_passive);
+ if (data->alarm_temp == trips[IMX_TRIP_PASSIVE].temperature &&
+ *temp >= trips[IMX_TRIP_PASSIVE].temperature)
+ imx_set_alarm_temp(data, trips[IMX_TRIP_CRITICAL].temperature);
+ if (data->alarm_temp == trips[IMX_TRIP_CRITICAL].temperature &&
+ *temp < trips[IMX_TRIP_PASSIVE].temperature) {
+ imx_set_alarm_temp(data, trips[IMX_TRIP_PASSIVE].temperature);
dev_dbg(&tz->device, "thermal alarm off: T < %d\n",
data->alarm_temp / 1000);
}
@@ -330,29 +332,10 @@ static int imx_change_mode(struct thermal_zone_device *tz,
return 0;
}

-static int imx_get_trip_type(struct thermal_zone_device *tz, int trip,
- enum thermal_trip_type *type)
-{
- *type = (trip == IMX_TRIP_PASSIVE) ? THERMAL_TRIP_PASSIVE :
- THERMAL_TRIP_CRITICAL;
- return 0;
-}
-
static int imx_get_crit_temp(struct thermal_zone_device *tz, int *temp)
{
- struct imx_thermal_data *data = tz->devdata;
-
- *temp = data->temp_critical;
- return 0;
-}
-
-static int imx_get_trip_temp(struct thermal_zone_device *tz, int trip,
- int *temp)
-{
- struct imx_thermal_data *data = tz->devdata;
+ *temp = trips[IMX_TRIP_CRITICAL].temperature;

- *temp = (trip == IMX_TRIP_PASSIVE) ? data->temp_passive :
- data->temp_critical;
return 0;
}

@@ -371,10 +354,10 @@ static int imx_set_trip_temp(struct thermal_zone_device *tz, int trip,
return -EPERM;

/* do not allow passive to be set higher than critical */
- if (temp < 0 || temp > data->temp_critical)
+ if (temp < 0 || temp > trips[IMX_TRIP_CRITICAL].temperature)
return -EINVAL;

- data->temp_passive = temp;
+ trips[IMX_TRIP_PASSIVE].temperature = temp;

imx_set_alarm_temp(data, temp);

@@ -423,8 +406,6 @@ static struct thermal_zone_device_ops imx_tz_ops = {
.unbind = imx_unbind,
.get_temp = imx_get_temp,
.change_mode = imx_change_mode,
- .get_trip_type = imx_get_trip_type,
- .get_trip_temp = imx_get_trip_temp,
.get_crit_temp = imx_get_crit_temp,
.set_trip_temp = imx_set_trip_temp,
};
@@ -507,8 +488,8 @@ static void imx_init_temp_grade(struct platform_device *pdev, u32 ocotp_mem0)
* Set the critical trip point at 5 °C under max
* Set the passive trip point at 10 °C under max (changeable via sysfs)
*/
- data->temp_critical = data->temp_max - (1000 * 5);
- data->temp_passive = data->temp_max - (1000 * 10);
+ trips[IMX_TRIP_PASSIVE].temperature = data->temp_max - (1000 * 10);
+ trips[IMX_TRIP_CRITICAL].temperature = data->temp_max - (1000 * 5);
}

static int imx_init_from_tempmon_data(struct platform_device *pdev)
@@ -743,12 +724,13 @@ static int imx_thermal_probe(struct platform_device *pdev)
goto legacy_cleanup;
}

- data->tz = thermal_zone_device_register("imx_thermal_zone",
- IMX_TRIP_NUM,
- BIT(IMX_TRIP_PASSIVE), data,
- &imx_tz_ops, NULL,
- IMX_PASSIVE_DELAY,
- IMX_POLLING_DELAY);
+ data->tz = thermal_zone_device_register_with_trips("imx_thermal_zone",
+ trips,
+ ARRAY_SIZE(trips),
+ BIT(IMX_TRIP_PASSIVE), data,
+ &imx_tz_ops, NULL,
+ IMX_PASSIVE_DELAY,
+ IMX_POLLING_DELAY);
if (IS_ERR(data->tz)) {
ret = PTR_ERR(data->tz);
dev_err(&pdev->dev,
@@ -758,8 +740,8 @@ static int imx_thermal_probe(struct platform_device *pdev)

dev_info(&pdev->dev, "%s CPU temperature grade - max:%dC"
" critical:%dC passive:%dC\n", data->temp_grade,
- data->temp_max / 1000, data->temp_critical / 1000,
- data->temp_passive / 1000);
+ data->temp_max / 1000, trips[IMX_TRIP_CRITICAL].temperature / 1000,
+ trips[IMX_TRIP_PASSIVE].temperature / 1000);

/* Enable measurements at ~ 10 Hz */
regmap_write(map, data->socdata->measure_freq_ctrl + REG_CLR,
@@ -767,10 +749,10 @@ static int imx_thermal_probe(struct platform_device *pdev)
measure_freq = DIV_ROUND_UP(32768, 10); /* 10 Hz */
regmap_write(map, data->socdata->measure_freq_ctrl + REG_SET,
measure_freq << data->socdata->measure_freq_shift);
- imx_set_alarm_temp(data, data->temp_passive);
+ imx_set_alarm_temp(data, trips[IMX_TRIP_PASSIVE].temperature);

if (data->socdata->version == TEMPMON_IMX6SX)
- imx_set_panic_temp(data, data->temp_critical);
+ imx_set_panic_temp(data, trips[IMX_TRIP_CRITICAL].temperature);

regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
data->socdata->power_down_mask);
--
2.34.1

2022-09-28 21:39:45

by Daniel Lezcano

[permalink] [raw]

Subject: [PATCH v7 07/29] thermal/drivers/exynos: Use generic thermal_zone_get_trip() function

2022-09-28 21:39:50

by Daniel Lezcano

[permalink] [raw]

Subject: [PATCH v7 04/29] thermal/core/governors: Use thermal_zone_get_trip() instead of ops functions

The governors are using the ops->get_trip_* functions, Replace these
calls with thermal_zone_get_trip().

Signed-off-by: Daniel Lezcano <[email protected]>
Reviewed-by: Zhang Rui <[email protected]>
Reviewed-by: Lukasz Luba <[email protected]> # IPA
---
drivers/thermal/gov_bang_bang.c | 39 +++++++++++---------
drivers/thermal/gov_fair_share.c | 18 ++++------
drivers/thermal/gov_power_allocator.c | 51 ++++++++++++---------------
drivers/thermal/gov_step_wise.c | 22 ++++++------
4 files changed, 62 insertions(+), 68 deletions(-)

diff --git a/drivers/thermal/gov_bang_bang.c b/drivers/thermal/gov_bang_bang.c
index a08bbe33be96..af7737ec90c3 100644
--- a/drivers/thermal/gov_bang_bang.c
+++ b/drivers/thermal/gov_bang_bang.c
@@ -13,26 +13,28 @@

#include "thermal_core.h"

-static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip)
+static int thermal_zone_trip_update(struct thermal_zone_device *tz, int trip_id)
{
- int trip_temp, trip_hyst;
+ struct thermal_trip trip;
struct thermal_instance *instance;
+ int ret;

- tz->ops->get_trip_temp(tz, trip, &trip_temp);
-
- if (!tz->ops->get_trip_hyst) {
- pr_warn_once("Undefined get_trip_hyst for thermal zone %s - "
- "running with default hysteresis zero\n", tz->type);
- trip_hyst = 0;
- } else
- tz->ops->get_trip_hyst(tz, trip, &trip_hyst);
+ ret = __thermal_zone_get_trip(tz, trip_id, &trip);
+ if (ret) {
+ pr_warn_once("Failed to retrieve trip point %d\n", trip_id);
+ return ret;
+ }
+
+ if (!trip.hysteresis)
+ dev_info_once(&tz->device,
+ "Zero hysteresis value for thermal zone %s\n", tz->type);

dev_dbg(&tz->device, "Trip%d[temp=%d]:temp=%d:hyst=%d\n",
- trip, trip_temp, tz->temperature,
- trip_hyst);
+ trip_id, trip.temperature, tz->temperature,
+ trip.hysteresis);

list_for_each_entry(instance, &tz->thermal_instances, tz_node) {
- if (instance->trip != trip)
+ if (instance->trip != trip_id)
continue;

/* in case fan is in initial state, switch the fan off */
@@ -50,10 +52,10 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip)
* enable fan when temperature exceeds trip_temp and disable
* the fan in case it falls below trip_temp minus hysteresis
*/
- if (instance->target == 0 && tz->temperature >= trip_temp)
+ if (instance->target == 0 && tz->temperature >= trip.temperature)
instance->target = 1;
else if (instance->target == 1 &&
- tz->temperature <= trip_temp - trip_hyst)
+ tz->temperature <= trip.temperature - trip.hysteresis)
instance->target = 0;

dev_dbg(&instance->cdev->device, "target=%d\n",
@@ -63,6 +65,8 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip)
instance->cdev->updated = false; /* cdev needs update */
mutex_unlock(&instance->cdev->lock);
}
+
+ return 0;
}

/**
@@ -95,10 +99,13 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip)
static int bang_bang_control(struct thermal_zone_device *tz, int trip)
{
struct thermal_instance *instance;
+ int ret;

lockdep_assert_held(&tz->lock);

- thermal_zone_trip_update(tz, trip);
+ ret = thermal_zone_trip_update(tz, trip);
+ if (ret)
+ return ret;

list_for_each_entry(instance, &tz->thermal_instances, tz_node)
thermal_cdev_update(instance->cdev);
diff --git a/drivers/thermal/gov_fair_share.c b/drivers/thermal/gov_fair_share.c
index a4ee4661e9cc..bca60cd21655 100644
--- a/drivers/thermal/gov_fair_share.c
+++ b/drivers/thermal/gov_fair_share.c
@@ -21,16 +21,12 @@
*/
static int get_trip_level(struct thermal_zone_device *tz)
{
- int count = 0;
- int trip_temp;
- enum thermal_trip_type trip_type;
-
- if (tz->num_trips == 0 || !tz->ops->get_trip_temp)
- return 0;
+ struct thermal_trip trip;
+ int count;

for (count = 0; count < tz->num_trips; count++) {
- tz->ops->get_trip_temp(tz, count, &trip_temp);
- if (tz->temperature < trip_temp)
+ __thermal_zone_get_trip(tz, count, &trip);
+ if (tz->temperature < trip.temperature)
break;
}

@@ -38,10 +34,8 @@ static int get_trip_level(struct thermal_zone_device *tz)
* count > 0 only if temperature is greater than first trip
* point, in which case, trip_point = count - 1
*/
- if (count > 0) {
- tz->ops->get_trip_type(tz, count - 1, &trip_type);
- trace_thermal_zone_trip(tz, count - 1, trip_type);
- }
+ if (count > 0)
+ trace_thermal_zone_trip(tz, count - 1, trip.type);

return count;
}
diff --git a/drivers/thermal/gov_power_allocator.c b/drivers/thermal/gov_power_allocator.c
index 2d1aeaba38a8..eafb28839281 100644
--- a/drivers/thermal/gov_power_allocator.c
+++ b/drivers/thermal/gov_power_allocator.c
@@ -125,16 +125,15 @@ static void estimate_pid_constants(struct thermal_zone_device *tz,
u32 sustainable_power, int trip_switch_on,
int control_temp)
{
+ struct thermal_trip trip;
+ u32 temperature_threshold = control_temp;
int ret;
- int switch_on_temp;
- u32 temperature_threshold;
s32 k_i;

- ret = tz->ops->get_trip_temp(tz, trip_switch_on, &switch_on_temp);
- if (ret)
- switch_on_temp = 0;
+ ret = __thermal_zone_get_trip(tz, trip_switch_on, &trip);
+ if (!ret)
+ temperature_threshold -= trip.temperature;

- temperature_threshold = control_temp - switch_on_temp;
/*
* estimate_pid_constants() tries to find appropriate default
* values for thermal zones that don't provide them. If a
@@ -520,10 +519,10 @@ static void get_governor_trips(struct thermal_zone_device *tz,
last_passive = INVALID_TRIP;

for (i = 0; i < tz->num_trips; i++) {
- enum thermal_trip_type type;
+ struct thermal_trip trip;
int ret;

- ret = tz->ops->get_trip_type(tz, i, &type);
+ ret = __thermal_zone_get_trip(tz, i, &trip);
if (ret) {
dev_warn(&tz->device,
"Failed to get trip point %d type: %d\n", i,
@@ -531,14 +530,14 @@ static void get_governor_trips(struct thermal_zone_device *tz,
continue;
}

- if (type == THERMAL_TRIP_PASSIVE) {
+ if (trip.type == THERMAL_TRIP_PASSIVE) {
if (!found_first_passive) {
params->trip_switch_on = i;
found_first_passive = true;
} else {
last_passive = i;
}
- } else if (type == THERMAL_TRIP_ACTIVE) {
+ } else if (trip.type == THERMAL_TRIP_ACTIVE) {
last_active = i;
} else {
break;
@@ -633,7 +632,7 @@ static int power_allocator_bind(struct thermal_zone_device *tz)
{
int ret;
struct power_allocator_params *params;
- int control_temp;
+ struct thermal_trip trip;

ret = check_power_actors(tz);
if (ret)
@@ -659,13 +658,12 @@ static int power_allocator_bind(struct thermal_zone_device *tz)
get_governor_trips(tz, params);

if (tz->num_trips > 0) {
- ret = tz->ops->get_trip_temp(tz,
- params->trip_max_desired_temperature,
- &control_temp);
+ ret = __thermal_zone_get_trip(tz, params->trip_max_desired_temperature,
+ &trip);
if (!ret)
estimate_pid_constants(tz, tz->tzp->sustainable_power,
params->trip_switch_on,
- control_temp);
+ trip.temperature);
}

reset_pid_controller(params);
@@ -695,11 +693,11 @@ static void power_allocator_unbind(struct thermal_zone_device *tz)
tz->governor_data = NULL;
}

-static int power_allocator_throttle(struct thermal_zone_device *tz, int trip)
+static int power_allocator_throttle(struct thermal_zone_device *tz, int trip_id)
{
- int ret;
- int switch_on_temp, control_temp;
struct power_allocator_params *params = tz->governor_data;
+ struct thermal_trip trip;
+ int ret;
bool update;

lockdep_assert_held(&tz->lock);
@@ -708,13 +706,12 @@ static int power_allocator_throttle(struct thermal_zone_device *tz, int trip)
* We get called for every trip point but we only need to do
* our calculations once
*/
- if (trip != params->trip_max_desired_temperature)
+ if (trip_id != params->trip_max_desired_temperature)
return 0;

- ret = tz->ops->get_trip_temp(tz, params->trip_switch_on,
- &switch_on_temp);
- if (!ret && (tz->temperature < switch_on_temp)) {
- update = (tz->last_temperature >= switch_on_temp);
+ ret = __thermal_zone_get_trip(tz, params->trip_switch_on, &trip);
+ if (!ret && (tz->temperature < trip.temperature)) {
+ update = (tz->last_temperature >= trip.temperature);
tz->passive = 0;
reset_pid_controller(params);
allow_maximum_power(tz, update);
@@ -723,16 +720,14 @@ static int power_allocator_throttle(struct thermal_zone_device *tz, int trip)

tz->passive = 1;

- ret = tz->ops->get_trip_temp(tz, params->trip_max_desired_temperature,
- &control_temp);
+ ret = __thermal_zone_get_trip(tz, params->trip_max_desired_temperature, &trip);
if (ret) {
- dev_warn(&tz->device,
- "Failed to get the maximum desired temperature: %d\n",
+ dev_warn(&tz->device, "Failed to get the maximum desired temperature: %d\n",
ret);
return ret;
}

- return allocate_power(tz, control_temp);
+ return allocate_power(tz, trip.temperature);
}

static struct thermal_governor thermal_gov_power_allocator = {
diff --git a/drivers/thermal/gov_step_wise.c b/drivers/thermal/gov_step_wise.c
index cdd3354bc27f..31235e169c5a 100644
--- a/drivers/thermal/gov_step_wise.c
+++ b/drivers/thermal/gov_step_wise.c
@@ -95,30 +95,28 @@ static void update_passive_instance(struct thermal_zone_device *tz,
tz->passive += value;
}

-static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip)
+static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip_id)
{
- int trip_temp;
- enum thermal_trip_type trip_type;
enum thermal_trend trend;
struct thermal_instance *instance;
+ struct thermal_trip trip;
bool throttle = false;
int old_target;

- tz->ops->get_trip_temp(tz, trip, &trip_temp);
- tz->ops->get_trip_type(tz, trip, &trip_type);
+ __thermal_zone_get_trip(tz, trip_id, &trip);

- trend = get_tz_trend(tz, trip);
+ trend = get_tz_trend(tz, trip_id);

- if (tz->temperature >= trip_temp) {
+ if (tz->temperature >= trip.temperature) {
throttle = true;
- trace_thermal_zone_trip(tz, trip, trip_type);
+ trace_thermal_zone_trip(tz, trip_id, trip.type);
}

dev_dbg(&tz->device, "Trip%d[type=%d,temp=%d]:trend=%d,throttle=%d\n",
- trip, trip_type, trip_temp, trend, throttle);
+ trip_id, trip.type, trip.temperature, trend, throttle);

list_for_each_entry(instance, &tz->thermal_instances, tz_node) {
- if (instance->trip != trip)
+ if (instance->trip != trip_id)
continue;

old_target = instance->target;
@@ -132,11 +130,11 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip)
/* Activate a passive thermal instance */
if (old_target == THERMAL_NO_TARGET &&
instance->target != THERMAL_NO_TARGET)
- update_passive_instance(tz, trip_type, 1);
+ update_passive_instance(tz, trip.type, 1);
/* Deactivate a passive thermal instance */
else if (old_target != THERMAL_NO_TARGET &&
instance->target == THERMAL_NO_TARGET)
- update_passive_instance(tz, trip_type, -1);
+ update_passive_instance(tz, trip.type, -1);

instance->initialized = true;
mutex_lock(&instance->cdev->lock);
--
2.34.1

2022-09-28 21:40:00

by Daniel Lezcano

[permalink] [raw]

Subject: [PATCH v7 11/29] thermal/drivers/uniphier: Use generic thermal_zone_get_trip() function

2022-09-28 21:40:21

by Daniel Lezcano

[permalink] [raw]

Subject: [PATCH v7 09/29] thermal/drivers/exynos: Replace of_thermal_is_trip_valid() by thermal_zone_get_trip()

The thermal_zone_get_trip() does the same check as
of_thermal_is_trip_valid(). Replace the call to
of_thermal_is_trip_valid() by thermal_zone_get_trip().

Signed-off-by: Daniel Lezcano <[email protected]>
---
drivers/thermal/samsung/exynos_tmu.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
index 91e6860b5ec4..34b460092308 100644
--- a/drivers/thermal/samsung/exynos_tmu.c
+++ b/drivers/thermal/samsung/exynos_tmu.c
@@ -554,13 +554,14 @@ static void exynos4210_tmu_control(struct platform_device *pdev, bool on)
{
struct exynos_tmu_data *data = platform_get_drvdata(pdev);
struct thermal_zone_device *tz = data->tzd;
+ struct thermal_trip trip;
unsigned int con, interrupt_en = 0, i;

con = get_con_reg(data, readl(data->base + EXYNOS_TMU_REG_CONTROL));

if (on) {
for (i = 0; i < data->ntrip; i++) {
- if (!of_thermal_is_trip_valid(tz, i))
+ if (thermal_zone_get_trip(tz, i, &trip))
continue;

interrupt_en |=
@@ -584,13 +585,14 @@ static void exynos5433_tmu_control(struct platform_device *pdev, bool on)
{
struct exynos_tmu_data *data = platform_get_drvdata(pdev);
struct thermal_zone_device *tz = data->tzd;
+ struct thermal_trip trip;
unsigned int con, interrupt_en = 0, pd_det_en, i;

con = get_con_reg(data, readl(data->base + EXYNOS_TMU_REG_CONTROL));

if (on) {
for (i = 0; i < data->ntrip; i++) {
- if (!of_thermal_is_trip_valid(tz, i))
+ if (thermal_zone_get_trip(tz, i, &trip))
continue;

interrupt_en |=
@@ -615,13 +617,14 @@ static void exynos7_tmu_control(struct platform_device *pdev, bool on)
{
struct exynos_tmu_data *data = platform_get_drvdata(pdev);
struct thermal_zone_device *tz = data->tzd;
+ struct thermal_trip trip;
unsigned int con, interrupt_en = 0, i;

con = get_con_reg(data, readl(data->base + EXYNOS_TMU_REG_CONTROL));

if (on) {
for (i = 0; i < data->ntrip; i++) {
- if (!of_thermal_is_trip_valid(tz, i))
+ if (thermal_zone_get_trip(tz, i, &trip))
continue;

interrupt_en |=
--
2.34.1

2022-09-28 21:40:22

by Daniel Lezcano

[permalink] [raw]

Subject: [PATCH v7 10/29] thermal/drivers/tegra: Use generic thermal_zone_get_trip() function

Replace a single call to thermal_zone_get_trip() to get a trip point
instead of calling the different ops->get_trip*

Signed-off-by: Daniel Lezcano <[email protected]>
---
drivers/thermal/tegra/soctherm.c | 33 +++++++++++--------------
drivers/thermal/tegra/tegra30-tsensor.c | 17 ++++++-------
2 files changed, 22 insertions(+), 28 deletions(-)

diff --git a/drivers/thermal/tegra/soctherm.c b/drivers/thermal/tegra/soctherm.c
index 1efe470f31e9..96b541458ccd 100644
--- a/drivers/thermal/tegra/soctherm.c
+++ b/drivers/thermal/tegra/soctherm.c
@@ -582,23 +582,23 @@ static int tsensor_group_thermtrip_get(struct tegra_soctherm *ts, int id)
return temp;
}

-static int tegra_thermctl_set_trip_temp(struct thermal_zone_device *tz, int trip, int temp)
+static int tegra_thermctl_set_trip_temp(struct thermal_zone_device *tz, int trip_id, int temp)
{
struct tegra_thermctl_zone *zone = tz->devdata;
struct tegra_soctherm *ts = zone->ts;
+ struct thermal_trip trip;
const struct tegra_tsensor_group *sg = zone->sg;
struct device *dev = zone->dev;
- enum thermal_trip_type type;
int ret;

if (!tz)
return -EINVAL;

- ret = tz->ops->get_trip_type(tz, trip, &type);
+ ret = thermal_zone_get_trip(tz, trip_id, &trip);
if (ret)
return ret;

- if (type == THERMAL_TRIP_CRITICAL) {
+ if (trip.type == THERMAL_TRIP_CRITICAL) {
/*
* If thermtrips property is set in DT,
* doesn't need to program critical type trip to HW,
@@ -609,7 +609,7 @@ static int tegra_thermctl_set_trip_temp(struct thermal_zone_device *tz, int trip
else
return 0;

- } else if (type == THERMAL_TRIP_HOT) {
+ } else if (trip.type == THERMAL_TRIP_HOT) {
int i;

for (i = 0; i < THROTTLE_SIZE; i++) {
@@ -620,7 +620,7 @@ static int tegra_thermctl_set_trip_temp(struct thermal_zone_device *tz, int trip
continue;

cdev = ts->throt_cfgs[i].cdev;
- if (get_thermal_instance(tz, cdev, trip))
+ if (get_thermal_instance(tz, cdev, trip_id))
stc = find_throttle_cfg_by_name(ts, cdev->type);
else
continue;
@@ -687,25 +687,20 @@ static const struct thermal_zone_device_ops tegra_of_thermal_ops = {
.set_trips = tegra_thermctl_set_trips,
};

-static int get_hot_temp(struct thermal_zone_device *tz, int *trip, int *temp)
+static int get_hot_temp(struct thermal_zone_device *tz, int *trip_id, int *temp)
{
- int ntrips, i, ret;
- enum thermal_trip_type type;
+ int i, ret;
+ struct thermal_trip trip;

- ntrips = of_thermal_get_ntrips(tz);
- if (ntrips <= 0)
- return -EINVAL;
+ for (i = 0; i < thermal_zone_get_num_trips(tz); i++) {

- for (i = 0; i < ntrips; i++) {
- ret = tz->ops->get_trip_type(tz, i, &type);
+ ret = thermal_zone_get_trip(tz, i, &trip);
if (ret)
return -EINVAL;
- if (type == THERMAL_TRIP_HOT) {
- ret = tz->ops->get_trip_temp(tz, i, temp);
- if (!ret)
- *trip = i;

- return ret;
+ if (trip.type == THERMAL_TRIP_HOT) {
+ *trip_id = i;
+ return 0;
}
}

diff --git a/drivers/thermal/tegra/tegra30-tsensor.c b/drivers/thermal/tegra/tegra30-tsensor.c
index c34501287e96..cbaad2245f1d 100644
--- a/drivers/thermal/tegra/tegra30-tsensor.c
+++ b/drivers/thermal/tegra/tegra30-tsensor.c
@@ -316,18 +316,17 @@ static void tegra_tsensor_get_hw_channel_trips(struct thermal_zone_device *tzd,
*hot_trip = 85000;
*crit_trip = 90000;

- for (i = 0; i < tzd->num_trips; i++) {
- enum thermal_trip_type type;
- int trip_temp;
+ for (i = 0; i < thermal_zone_get_num_trips(tzd); i++) {

- tzd->ops->get_trip_temp(tzd, i, &trip_temp);
- tzd->ops->get_trip_type(tzd, i, &type);
+ struct thermal_trip trip;

- if (type == THERMAL_TRIP_HOT)
- *hot_trip = trip_temp;
+ thermal_zone_get_trip(tzd, i, &trip);
+
+ if (trip.type == THERMAL_TRIP_HOT)
+ *hot_trip = trip.temperature;

- if (type == THERMAL_TRIP_CRITICAL)
- *crit_trip = trip_temp;
+ if (trip.type == THERMAL_TRIP_CRITICAL)
+ *crit_trip = trip.temperature;
}

/* clamp hardware trips to the calibration limits */
--
2.34.1

2022-09-28 21:40:38

by Daniel Lezcano

[permalink] [raw]

Subject: [PATCH v7 20/29] thermal/drivers/st: Use generic trip points

The thermal framework gives the possibility to register the trip
points with the thermal zone. When that is done, no get_trip_* ops are
needed and they can be removed.

Convert to the generic trip points

Signed-off-by: Daniel Lezcano <[email protected]>
---
drivers/thermal/st/st_thermal.c | 47 +++++----------------------------
1 file changed, 7 insertions(+), 40 deletions(-)

diff --git a/drivers/thermal/st/st_thermal.c b/drivers/thermal/st/st_thermal.c
index 1276b95604fe..c0d45cdd1c2f 100644
--- a/drivers/thermal/st/st_thermal.c
+++ b/drivers/thermal/st/st_thermal.c
@@ -134,48 +134,12 @@ static int st_thermal_get_temp(struct thermal_zone_device *th, int *temperature)
return 0;
}

-static int st_thermal_get_trip_type(struct thermal_zone_device *th,
- int trip, enum thermal_trip_type *type)
-{
- struct st_thermal_sensor *sensor = th->devdata;
- struct device *dev = sensor->dev;
-
- switch (trip) {
- case 0:
- *type = THERMAL_TRIP_CRITICAL;
- break;
- default:
- dev_err(dev, "invalid trip point\n");
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int st_thermal_get_trip_temp(struct thermal_zone_device *th,
- int trip, int *temp)
-{
- struct st_thermal_sensor *sensor = th->devdata;
- struct device *dev = sensor->dev;
-
- switch (trip) {
- case 0:
- *temp = mcelsius(sensor->cdata->crit_temp);
- break;
- default:
- dev_err(dev, "Invalid trip point\n");
- return -EINVAL;
- }
-
- return 0;
-}
-
static struct thermal_zone_device_ops st_tz_ops = {
.get_temp = st_thermal_get_temp,
- .get_trip_type = st_thermal_get_trip_type,
- .get_trip_temp = st_thermal_get_trip_temp,
};

+static struct thermal_trip trip;
+
int st_thermal_register(struct platform_device *pdev,
const struct of_device_id *st_thermal_of_match)
{
@@ -238,9 +202,12 @@ int st_thermal_register(struct platform_device *pdev,

polling_delay = sensor->ops->register_enable_irq ? 0 : 1000;

+ trip.temperature = sensor->cdata->crit_temp;
+ trip.type = THERMAL_TRIP_CRITICAL;
+
sensor->thermal_dev =
- thermal_zone_device_register(dev_name(dev), 1, 0, sensor,
- &st_tz_ops, NULL, 0, polling_delay);
+ thermal_zone_device_register_with_trips(dev_name(dev), &trip, 1, 0, sensor,
+ &st_tz_ops, NULL, 0, polling_delay);
if (IS_ERR(sensor->thermal_dev)) {
dev_err(dev, "failed to register thermal zone device\n");
ret = PTR_ERR(sensor->thermal_dev);
--
2.34.1

2022-09-29 08:00:42

by Krzysztof Kozlowski

[permalink] [raw]

Subject: Re: [PATCH v7 09/29] thermal/drivers/exynos: Replace of_thermal_is_trip_valid() by thermal_zone_get_trip()

On 28/09/2022 23:00, Daniel Lezcano wrote:
> The thermal_zone_get_trip() does the same check as
> of_thermal_is_trip_valid(). Replace the call to
> of_thermal_is_trip_valid() by thermal_zone_get_trip().
>
> Signed-off-by: Daniel Lezcano <[email protected]>

I think I acked it...

Acked-by: Krzysztof Kozlowski <[email protected]>

Best regards,
Krzysztof

2022-09-29 12:28:20

by Daniel Lezcano

[permalink] [raw]

Subject: Re: [PATCH v7 00/29] Rework the trip points creation

Hi Rafael,

are you happy with the changes? I would like to integrate those changes
with the thermal pull request

On 28/09/2022 23:00, Daniel Lezcano wrote:
> This work is the pre-requisite of handling correctly when the trip
> point are crossed. For that we need to rework how the trip points are
> declared and assigned to a thermal zone.
>
> Even if it appears to be a common sense to have the trip points being
> ordered, this no guarantee neither documentation telling that is the
> case.
>
> One solution could have been to create an ordered array of trips built
> when registering the thermal zone by calling the different get_trip*
> ops. However those ops receive a thermal zone pointer which is not
> known as it is in the process of creating it.
>
> This cyclic dependency shows we have to rework how we manage the trip
> points.
>
> Actually, all the trip points definition can be common to the backend
> sensor drivers and we can factor out the thermal trip structure in all
> of them.
>
> Then, as we register the thermal trips array, they will be available
> in the thermal zone structure and a core function can return the trip
> given its id.
>
> The get_trip_* ops won't be needed anymore and could be removed. The
> resulting code will be another step forward to a self encapsulated
> generic thermal framework.
>
> Most of the drivers can be converted more or less easily. This series
> does a first round with most of the drivers. Some remain and will be
> converted but with a smaller set of changes as the conversion is a bit
> more complex.
>
> Changelog:
> v7:
> - Added missing return 0 in the x86_pkg_temp driver
> v6:
> - Improved the code for the get_crit_temp() function as suggested by Rafael
> - Removed inner parenthesis in the set_trip_temp() function and invert the
> conditions. Check the type of the trip point is unchanged
> - Folded patch 4 with 1
> - Add per thermal zone info message in the bang-bang governor
> - Folded the fix for an uninitialized variable in int340x_thermal_zone_add()
> v5:
> - Fixed a deadlock when calling thermal_zone_get_trip() while
> handling the thermal zone lock
> - Remove an extra line in the sysfs change
> - Collected tags
> v4:
> - Remove extra lines on exynos changes as reported by Krzysztof Kozlowski
> - Collected tags
> v3:
> - Reorg the series to be git-bisect safe
> - Added the set_trip generic function
> - Added the get_crit_temp generic function
> - Removed more dead code in the thermal-of
> - Fixed the exynos changelog
> - Fixed the error check for the exynos drivers
> - Collected tags
> v2:
> - Added missing EXPORT_SYMBOL_GPL() for thermal_zone_get_trip()
> - Removed tab whitespace in the acerhdf driver
> - Collected tags
>
> Cc: Raju Rangoju <[email protected]>
> Cc: "David S. Miller" <[email protected]>
> Cc: Eric Dumazet <[email protected]>
> Cc: Jakub Kicinski <[email protected]>
> Cc: Paolo Abeni <[email protected]>
> Cc: Peter Kaestle <[email protected]>
> Cc: Hans de Goede <[email protected]>
> Cc: Mark Gross <[email protected]>
> Cc: Miquel Raynal <[email protected]>
> Cc: "Rafael J. Wysocki" <[email protected]>
> Cc: Daniel Lezcano <[email protected]>
> Cc: Amit Kucheria <[email protected]>
> Cc: Zhang Rui <[email protected]>
> Cc: Nicolas Saenz Julienne <[email protected]>
> Cc: Broadcom Kernel Team <[email protected]>
> Cc: Florian Fainelli <[email protected]>
> Cc: Ray Jui <[email protected]>
> Cc: Scott Branden <[email protected]>
> Cc: Support Opensource <[email protected]>
> Cc: Lukasz Luba <[email protected]>
> Cc: Shawn Guo <[email protected]>
> Cc: Sascha Hauer <[email protected]>
> Cc: Pengutronix Kernel Team <[email protected]>
> Cc: Fabio Estevam <[email protected]>
> Cc: NXP Linux Team <[email protected]>
> Cc: Thara Gopinath <[email protected]>
> Cc: Andy Gross <[email protected]>
> Cc: Bjorn Andersson <[email protected]>
> Cc: "Niklas Söderlund" <[email protected]>
> Cc: Bartlomiej Zolnierkiewicz <[email protected]>
> Cc: Krzysztof Kozlowski <[email protected]>
> Cc: Alim Akhtar <[email protected]>
> Cc: Thierry Reding <[email protected]>
> Cc: Jonathan Hunter <[email protected]>
> Cc: Eduardo Valentin <[email protected]>
> Cc: Keerthy <[email protected]>
> Cc: Kunihiko Hayashi <[email protected]>
> Cc: Masami Hiramatsu <[email protected]>
> Cc: Antoine Tenart <[email protected]>
> Cc: Srinivas Pandruvada <[email protected]>
> Cc: Dmitry Osipenko <[email protected]>
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
>
> Daniel Lezcano (29):
> thermal/core: Add a generic thermal_zone_get_trip() function
> thermal/sysfs: Always expose hysteresis attributes
> thermal/core: Add a generic thermal_zone_set_trip() function
> thermal/core/governors: Use thermal_zone_get_trip() instead of ops
> functions
> thermal/of: Use generic thermal_zone_get_trip() function
> thermal/of: Remove unused functions
> thermal/drivers/exynos: Use generic thermal_zone_get_trip() function
> thermal/drivers/exynos: of_thermal_get_ntrips()
> thermal/drivers/exynos: Replace of_thermal_is_trip_valid() by
> thermal_zone_get_trip()
> thermal/drivers/tegra: Use generic thermal_zone_get_trip() function
> thermal/drivers/uniphier: Use generic thermal_zone_get_trip() function
> thermal/drivers/hisi: Use generic thermal_zone_get_trip() function
> thermal/drivers/qcom: Use generic thermal_zone_get_trip() function
> thermal/drivers/armada: Use generic thermal_zone_get_trip() function
> thermal/drivers/rcar_gen3: Use the generic function to get the number
> of trips
> thermal/of: Remove of_thermal_get_ntrips()
> thermal/of: Remove of_thermal_is_trip_valid()
> thermal/of: Remove of_thermal_set_trip_hyst()
> thermal/of: Remove of_thermal_get_crit_temp()
> thermal/drivers/st: Use generic trip points
> thermal/drivers/imx: Use generic thermal_zone_get_trip() function
> thermal/drivers/rcar: Use generic thermal_zone_get_trip() function
> thermal/drivers/broadcom: Use generic thermal_zone_get_trip() function
> thermal/drivers/da9062: Use generic thermal_zone_get_trip() function
> thermal/drivers/ti: Remove unused macros ti_thermal_get_trip_value() /
> ti_thermal_trip_is_valid()
> thermal/drivers/acerhdf: Use generic thermal_zone_get_trip() function
> thermal/drivers/cxgb4: Use generic thermal_zone_get_trip() function
> thermal/intel/int340x: Replace parameter to simplify
> thermal/drivers/intel: Use generic thermal_zone_get_trip() function
>
> drivers/net/ethernet/chelsio/cxgb4/cxgb4.h | 2 -
> .../ethernet/chelsio/cxgb4/cxgb4_thermal.c | 41 +----
> drivers/platform/x86/acerhdf.c | 73 +++-----
> drivers/thermal/armada_thermal.c | 39 ++---
> drivers/thermal/broadcom/bcm2835_thermal.c | 8 +-
> drivers/thermal/da9062-thermal.c | 52 +-----
> drivers/thermal/gov_bang_bang.c | 39 +++--
> drivers/thermal/gov_fair_share.c | 18 +-
> drivers/thermal/gov_power_allocator.c | 51 +++---
> drivers/thermal/gov_step_wise.c | 22 ++-
> drivers/thermal/hisi_thermal.c | 11 +-
> drivers/thermal/imx_thermal.c | 72 +++-----
> .../int340x_thermal/int340x_thermal_zone.c | 33 ++--
> .../int340x_thermal/int340x_thermal_zone.h | 4 +-
> .../processor_thermal_device.c | 10 +-
> drivers/thermal/intel/x86_pkg_temp_thermal.c | 120 +++++++------
> drivers/thermal/qcom/qcom-spmi-temp-alarm.c | 39 ++---
> drivers/thermal/rcar_gen3_thermal.c | 2 +-
> drivers/thermal/rcar_thermal.c | 53 +-----
> drivers/thermal/samsung/exynos_tmu.c | 57 +++----
> drivers/thermal/st/st_thermal.c | 47 +----
> drivers/thermal/tegra/soctherm.c | 33 ++--
> drivers/thermal/tegra/tegra30-tsensor.c | 17 +-
> drivers/thermal/thermal_core.c | 161 +++++++++++++++---
> drivers/thermal/thermal_core.h | 24 +--
> drivers/thermal/thermal_helpers.c | 28 +--
> drivers/thermal/thermal_netlink.c | 21 +--
> drivers/thermal/thermal_of.c | 116 -------------
> drivers/thermal/thermal_sysfs.c | 133 +++++----------
> drivers/thermal/ti-soc-thermal/ti-thermal.h | 15 --
> drivers/thermal/uniphier_thermal.c | 27 ++-
> include/linux/thermal.h | 10 ++
> 32 files changed, 560 insertions(+), 818 deletions(-)
>

--
<http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs

Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook |
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<http://www.linaro.org/linaro-blog/> Blog

2022-09-29 13:41:30

by Dmitry Baryshkov

[permalink] [raw]

Subject: Re: [PATCH v7 13/29] thermal/drivers/qcom: Use generic thermal_zone_get_trip() function

On 29/09/2022 00:00, Daniel Lezcano wrote:
> The thermal framework gives the possibility to register the trip
> points with the thermal zone. When that is done, no get_trip_* ops are
> needed and they can be removed.
>
> Convert ops content logic into generic trip points and register them with the
> thermal zone.
>
> Signed-off-by: Daniel Lezcano <[email protected]>
> Acked-by: Amit Kucheria <[email protected]>

Reviewed-by: Dmitry Baryshkov <[email protected]>

> ---
> drivers/thermal/qcom/qcom-spmi-temp-alarm.c | 39 +++++++++------------
> 1 file changed, 17 insertions(+), 22 deletions(-)
>

--
With best wishes
Dmitry

2022-09-29 14:08:15

by Rafael J. Wysocki

[permalink] [raw]

Subject: Re: [PATCH v7 00/29] Rework the trip points creation

On Thu, Sep 29, 2022 at 2:26 PM Daniel Lezcano
<[email protected]> wrote:
>
>
> Hi Rafael,
>
> are you happy with the changes?

I'll have a look and let you know.

> I would like to integrate those changes with the thermal pull request

Sure, but it looks like you've got only a few ACKs for these patches
from the driver people.

Wouldn't it be prudent to give them some more time to review the changes?

> On 28/09/2022 23:00, Daniel Lezcano wrote:
> > This work is the pre-requisite of handling correctly when the trip
> > point are crossed. For that we need to rework how the trip points are
> > declared and assigned to a thermal zone.
> >
> > Even if it appears to be a common sense to have the trip points being
> > ordered, this no guarantee neither documentation telling that is the
> > case.
> >
> > One solution could have been to create an ordered array of trips built
> > when registering the thermal zone by calling the different get_trip*
> > ops. However those ops receive a thermal zone pointer which is not
> > known as it is in the process of creating it.
> >
> > This cyclic dependency shows we have to rework how we manage the trip
> > points.
> >
> > Actually, all the trip points definition can be common to the backend
> > sensor drivers and we can factor out the thermal trip structure in all
> > of them.
> >
> > Then, as we register the thermal trips array, they will be available
> > in the thermal zone structure and a core function can return the trip
> > given its id.
> >
> > The get_trip_* ops won't be needed anymore and could be removed. The
> > resulting code will be another step forward to a self encapsulated
> > generic thermal framework.
> >
> > Most of the drivers can be converted more or less easily. This series
> > does a first round with most of the drivers. Some remain and will be
> > converted but with a smaller set of changes as the conversion is a bit
> > more complex.
> >
> > Changelog:
> > v7:
> > - Added missing return 0 in the x86_pkg_temp driver
> > v6:
> > - Improved the code for the get_crit_temp() function as suggested by Rafael
> > - Removed inner parenthesis in the set_trip_temp() function and invert the
> > conditions. Check the type of the trip point is unchanged
> > - Folded patch 4 with 1
> > - Add per thermal zone info message in the bang-bang governor
> > - Folded the fix for an uninitialized variable in int340x_thermal_zone_add()
> > v5:
> > - Fixed a deadlock when calling thermal_zone_get_trip() while
> > handling the thermal zone lock
> > - Remove an extra line in the sysfs change
> > - Collected tags
> > v4:
> > - Remove extra lines on exynos changes as reported by Krzysztof Kozlowski
> > - Collected tags
> > v3:
> > - Reorg the series to be git-bisect safe
> > - Added the set_trip generic function
> > - Added the get_crit_temp generic function
> > - Removed more dead code in the thermal-of
> > - Fixed the exynos changelog
> > - Fixed the error check for the exynos drivers
> > - Collected tags
> > v2:
> > - Added missing EXPORT_SYMBOL_GPL() for thermal_zone_get_trip()
> > - Removed tab whitespace in the acerhdf driver
> > - Collected tags
> >
> > Cc: Raju Rangoju <[email protected]>
> > Cc: "David S. Miller" <[email protected]>
> > Cc: Eric Dumazet <[email protected]>
> > Cc: Jakub Kicinski <[email protected]>
> > Cc: Paolo Abeni <[email protected]>
> > Cc: Peter Kaestle <[email protected]>
> > Cc: Hans de Goede <[email protected]>
> > Cc: Mark Gross <[email protected]>
> > Cc: Miquel Raynal <[email protected]>
> > Cc: "Rafael J. Wysocki" <[email protected]>
> > Cc: Daniel Lezcano <[email protected]>
> > Cc: Amit Kucheria <[email protected]>
> > Cc: Zhang Rui <[email protected]>
> > Cc: Nicolas Saenz Julienne <[email protected]>
> > Cc: Broadcom Kernel Team <[email protected]>
> > Cc: Florian Fainelli <[email protected]>
> > Cc: Ray Jui <[email protected]>
> > Cc: Scott Branden <[email protected]>
> > Cc: Support Opensource <[email protected]>
> > Cc: Lukasz Luba <[email protected]>
> > Cc: Shawn Guo <[email protected]>
> > Cc: Sascha Hauer <[email protected]>
> > Cc: Pengutronix Kernel Team <[email protected]>
> > Cc: Fabio Estevam <[email protected]>
> > Cc: NXP Linux Team <[email protected]>
> > Cc: Thara Gopinath <[email protected]>
> > Cc: Andy Gross <[email protected]>
> > Cc: Bjorn Andersson <[email protected]>
> > Cc: "Niklas Söderlund" <[email protected]>
> > Cc: Bartlomiej Zolnierkiewicz <[email protected]>
> > Cc: Krzysztof Kozlowski <[email protected]>
> > Cc: Alim Akhtar <[email protected]>
> > Cc: Thierry Reding <[email protected]>
> > Cc: Jonathan Hunter <[email protected]>
> > Cc: Eduardo Valentin <[email protected]>
> > Cc: Keerthy <[email protected]>
> > Cc: Kunihiko Hayashi <[email protected]>
> > Cc: Masami Hiramatsu <[email protected]>
> > Cc: Antoine Tenart <[email protected]>
> > Cc: Srinivas Pandruvada <[email protected]>
> > Cc: Dmitry Osipenko <[email protected]>
> > Cc: [email protected]
> > Cc: [email protected]
> > Cc: [email protected]
> > Cc: [email protected]
> > Cc: [email protected]
> > Cc: [email protected]
> > Cc: [email protected]
> > Cc: [email protected]
> > Cc: [email protected]
> > Cc: [email protected]
> > Cc: [email protected]
> >
> > Daniel Lezcano (29):
> > thermal/core: Add a generic thermal_zone_get_trip() function
> > thermal/sysfs: Always expose hysteresis attributes
> > thermal/core: Add a generic thermal_zone_set_trip() function
> > thermal/core/governors: Use thermal_zone_get_trip() instead of ops
> > functions
> > thermal/of: Use generic thermal_zone_get_trip() function
> > thermal/of: Remove unused functions
> > thermal/drivers/exynos: Use generic thermal_zone_get_trip() function
> > thermal/drivers/exynos: of_thermal_get_ntrips()
> > thermal/drivers/exynos: Replace of_thermal_is_trip_valid() by
> > thermal_zone_get_trip()
> > thermal/drivers/tegra: Use generic thermal_zone_get_trip() function
> > thermal/drivers/uniphier: Use generic thermal_zone_get_trip() function
> > thermal/drivers/hisi: Use generic thermal_zone_get_trip() function
> > thermal/drivers/qcom: Use generic thermal_zone_get_trip() function
> > thermal/drivers/armada: Use generic thermal_zone_get_trip() function
> > thermal/drivers/rcar_gen3: Use the generic function to get the number
> > of trips
> > thermal/of: Remove of_thermal_get_ntrips()
> > thermal/of: Remove of_thermal_is_trip_valid()
> > thermal/of: Remove of_thermal_set_trip_hyst()
> > thermal/of: Remove of_thermal_get_crit_temp()
> > thermal/drivers/st: Use generic trip points
> > thermal/drivers/imx: Use generic thermal_zone_get_trip() function
> > thermal/drivers/rcar: Use generic thermal_zone_get_trip() function
> > thermal/drivers/broadcom: Use generic thermal_zone_get_trip() function
> > thermal/drivers/da9062: Use generic thermal_zone_get_trip() function
> > thermal/drivers/ti: Remove unused macros ti_thermal_get_trip_value() /
> > ti_thermal_trip_is_valid()
> > thermal/drivers/acerhdf: Use generic thermal_zone_get_trip() function
> > thermal/drivers/cxgb4: Use generic thermal_zone_get_trip() function
> > thermal/intel/int340x: Replace parameter to simplify
> > thermal/drivers/intel: Use generic thermal_zone_get_trip() function
> >
> > drivers/net/ethernet/chelsio/cxgb4/cxgb4.h | 2 -
> > .../ethernet/chelsio/cxgb4/cxgb4_thermal.c | 41 +----
> > drivers/platform/x86/acerhdf.c | 73 +++-----
> > drivers/thermal/armada_thermal.c | 39 ++---
> > drivers/thermal/broadcom/bcm2835_thermal.c | 8 +-
> > drivers/thermal/da9062-thermal.c | 52 +-----
> > drivers/thermal/gov_bang_bang.c | 39 +++--
> > drivers/thermal/gov_fair_share.c | 18 +-
> > drivers/thermal/gov_power_allocator.c | 51 +++---
> > drivers/thermal/gov_step_wise.c | 22 ++-
> > drivers/thermal/hisi_thermal.c | 11 +-
> > drivers/thermal/imx_thermal.c | 72 +++-----
> > .../int340x_thermal/int340x_thermal_zone.c | 33 ++--
> > .../int340x_thermal/int340x_thermal_zone.h | 4 +-
> > .../processor_thermal_device.c | 10 +-
> > drivers/thermal/intel/x86_pkg_temp_thermal.c | 120 +++++++------
> > drivers/thermal/qcom/qcom-spmi-temp-alarm.c | 39 ++---
> > drivers/thermal/rcar_gen3_thermal.c | 2 +-
> > drivers/thermal/rcar_thermal.c | 53 +-----
> > drivers/thermal/samsung/exynos_tmu.c | 57 +++----
> > drivers/thermal/st/st_thermal.c | 47 +----
> > drivers/thermal/tegra/soctherm.c | 33 ++--
> > drivers/thermal/tegra/tegra30-tsensor.c | 17 +-
> > drivers/thermal/thermal_core.c | 161 +++++++++++++++---
> > drivers/thermal/thermal_core.h | 24 +--
> > drivers/thermal/thermal_helpers.c | 28 +--
> > drivers/thermal/thermal_netlink.c | 21 +--
> > drivers/thermal/thermal_of.c | 116 -------------
> > drivers/thermal/thermal_sysfs.c | 133 +++++----------
> > drivers/thermal/ti-soc-thermal/ti-thermal.h | 15 --
> > drivers/thermal/uniphier_thermal.c | 27 ++-
> > include/linux/thermal.h | 10 ++
> > 32 files changed, 560 insertions(+), 818 deletions(-)
> >
>
>
> --
> <http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs
>
> Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook |
> <http://twitter.com/#!/linaroorg> Twitter |
> <http://www.linaro.org/linaro-blog/> Blog

2022-09-29 15:06:21

by Daniel Lezcano

[permalink] [raw]

Subject: Re: [PATCH v7 00/29] Rework the trip points creation

On 29/09/2022 15:58, Rafael J. Wysocki wrote:
> On Thu, Sep 29, 2022 at 2:26 PM Daniel Lezcano
> <[email protected]> wrote:
>>
>>
>> Hi Rafael,
>>
>> are you happy with the changes?
>
> I'll have a look and let you know.

Great, thanks
>
>> I would like to integrate those changes with the thermal pull request
>
> Sure, but it looks like you've got only a few ACKs for these patches
> from the driver people.
>
> Wouldn't it be prudent to give them some more time to review the changes?

Well I would say I received the ACKs from the drivers which are actively
maintained. Others are either not with a dedicated maintainer or not a
reactive one. The first iteration of the series is from August 5th. So
it has been 2 months.

I pinged for imx, armada and tegra two weeks ago.

The st, hisilicon drivers fall under the thermal maintainers umbrella

There are three series coming after this series to be posted. I would
like to go forward in the process of cleaning up the framework. IMO two
months is enough to let the maintainers pay attention to the changes,
especially if we do a gentle ping and there are seven versions.

And after that comes the thermal_zone_device_register() parameters
simplification :)

[ ... ]

--
<http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs

Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook |
<http://twitter.com/#!/linaroorg> Twitter |
<http://www.linaro.org/linaro-blog/> Blog

2022-09-29 17:46:16

by Florian Fainelli

[permalink] [raw]

Subject: Re: [PATCH v7 23/29] thermal/drivers/broadcom: Use generic thermal_zone_get_trip() function

On 9/28/22 14:00, Daniel Lezcano wrote:
> The thermal framework gives the possibility to register the trip
> points with the thermal zone. When that is done, no get_trip_* ops are
> needed and they can be removed.
>
> Convert ops content logic into generic trip points and register them with the
> thermal zone.
>
> Signed-off-by: Daniel Lezcano <[email protected]>

Acked-by: Florian Fainelli <[email protected]>
--
Florian

2022-09-29 19:58:12

by Rafael J. Wysocki

[permalink] [raw]

Subject: Re: [PATCH v7 00/29] Rework the trip points creation

On Thu, Sep 29, 2022 at 4:57 PM Daniel Lezcano
<[email protected]> wrote:
>
> On 29/09/2022 15:58, Rafael J. Wysocki wrote:
> > On Thu, Sep 29, 2022 at 2:26 PM Daniel Lezcano
> > <[email protected]> wrote:
> >>
> >>
> >> Hi Rafael,
> >>
> >> are you happy with the changes?
> >
> > I'll have a look and let you know.
>
> Great, thanks

Well, because you have not added the history of changes to the
patches, that will take more time than it would otherwise.

Generally, please always add information on what has changed in the
patch between different versions of it.

> >> I would like to integrate those changes with the thermal pull request
> >
> > Sure, but it looks like you've got only a few ACKs for these patches
> > from the driver people.
> >
> > Wouldn't it be prudent to give them some more time to review the changes?
>
> Well I would say I received the ACKs from the drivers which are actively
> maintained. Others are either not with a dedicated maintainer or not a
> reactive one. The first iteration of the series is from August 5th. So
> it has been 2 months.
>
> I pinged for imx, armada and tegra two weeks ago.

OK

> The st, hisilicon drivers fall under the thermal maintainers umbrella
>
> There are three series coming after this series to be posted. I would
> like to go forward in the process of cleaning up the framework. IMO two
> months is enough to let the maintainers pay attention to the changes,
> especially if we do a gentle ping and there are seven versions.
>
> And after that comes the thermal_zone_device_register() parameters
> simplification :)

Well, that's all fine, but I don't want people to get surprised by
significant changes they haven't expected and I want to avoid missing
anything subtle.

2022-09-30 17:58:12

by Rafael J. Wysocki

[permalink] [raw]

Subject: Re: [PATCH v7 03/29] thermal/core: Add a generic thermal_zone_set_trip() function

On Wed, Sep 28, 2022 at 11:01 PM Daniel Lezcano
<[email protected]> wrote:
>
> The thermal zone ops defines a set_trip callback where we can invoke
> the backend driver to set an interrupt for the next trip point
> temperature being crossed the way up or down, or setting the low level
> with the hysteresis.
>
> The ops is only called from the thermal sysfs code where the userspace
> has the ability to modify a trip point characteristic.
>
> With the effort of encapsulating the thermal framework core code,
> let's create a thermal_zone_set_trip() which is the writable side of
> the thermal_zone_get_trip() and put there all the ops encapsulation.
>
> Signed-off-by: Daniel Lezcano <[email protected]>
> ---
> drivers/thermal/thermal_core.c | 47 +++++++++++++++++++++++++++++
> drivers/thermal/thermal_sysfs.c | 52 +++++++++++----------------------
> include/linux/thermal.h | 3 ++
> 3 files changed, 67 insertions(+), 35 deletions(-)
>
> diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
> index 16ef91dc102f..2675671781cd 100644
> --- a/drivers/thermal/thermal_core.c
> +++ b/drivers/thermal/thermal_core.c
> @@ -1211,6 +1211,53 @@ int thermal_zone_get_trip(struct thermal_zone_device *tz, int trip_id,
> }
> EXPORT_SYMBOL_GPL(thermal_zone_get_trip);
>
> +int thermal_zone_set_trip(struct thermal_zone_device *tz, int trip_id,
> + const struct thermal_trip *trip)
> +{
> + struct thermal_trip t;
> + int ret = -EINVAL;
> +
> + mutex_lock(&tz->lock);
> +
> + if (!tz->ops->set_trip_temp && !tz->ops->set_trip_hyst && !tz->trips)
> + goto out;
> +
> + ret = __thermal_zone_get_trip(tz, trip_id, &t);
> + if (ret)
> + goto out;
> +
> + if (t.type != trip->type) {
> + ret = -EINVAL;
> + goto out;
> + }
> +
> + if (t.temperature != trip->temperature && tz->ops->set_trip_temp) {
> + ret = tz->ops->set_trip_temp(tz, trip_id, trip->temperature);
> + if (ret)
> + goto out;
> + }
> +
> + if (t.hysteresis != trip->hysteresis && tz->ops->set_trip_hyst) {
> + ret = tz->ops->set_trip_hyst(tz, trip_id, trip->hysteresis);
> + if (ret)
> + goto out;
> + }
> +
> + if (tz->trips && ((t.temperature != trip->temperature) ||
> + (t.hysteresis != trip->hysteresis)))

if (tz->trips && (t.temperature != trip->temperature || t.hysteresis
!= trip->hysteresis))

pretty please, and I don't think that it is necessary to break this line.

> + tz->trips[trip_id] = *trip;
> +out:
> + mutex_unlock(&tz->lock);
> +
> + if (!ret) {
> + thermal_notify_tz_trip_change(tz->id, trip_id, trip->type,
> + trip->temperature, trip->hysteresis);
> + thermal_zone_device_update(tz, THERMAL_TRIP_CHANGED);
> + }
> +
> + return ret;
> +}
> +
> /**
> * thermal_zone_device_register_with_trips() - register a new thermal zone device
> * @type: the thermal zone device type
> diff --git a/drivers/thermal/thermal_sysfs.c b/drivers/thermal/thermal_sysfs.c
> index 6c45194aaabb..8d7b25ab67c2 100644
> --- a/drivers/thermal/thermal_sysfs.c
> +++ b/drivers/thermal/thermal_sysfs.c
> @@ -115,32 +115,19 @@ trip_point_temp_store(struct device *dev, struct device_attribute *attr,
> struct thermal_trip trip;
> int trip_id, ret;
>
> - if (!tz->ops->set_trip_temp && !tz->trips)
> - return -EPERM;
> -
> if (sscanf(attr->attr.name, "trip_point_%d_temp", &trip_id) != 1)
> return -EINVAL;
>
> - if (kstrtoint(buf, 10, &trip.temperature))
> - return -EINVAL;
> -
> - if (tz->ops->set_trip_temp) {
> - ret = tz->ops->set_trip_temp(tz, trip_id, trip.temperature);
> - if (ret)
> - return ret;
> - }
> -
> - if (tz->trips)
> - tz->trips[trip_id].temperature = trip.temperature;
> -
> ret = thermal_zone_get_trip(tz, trip_id, &trip);
> if (ret)
> return ret;
>
> - thermal_notify_tz_trip_change(tz->id, trip_id, trip.type,
> - trip.temperature, trip.hysteresis);
> + if (kstrtoint(buf, 10, &trip.temperature))
> + return -EINVAL;
>
> - thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
> + ret = thermal_zone_set_trip(tz, trip_id, &trip);
> + if (ret)
> + return ret;
>
> return count;
> }
> @@ -168,29 +155,24 @@ trip_point_hyst_store(struct device *dev, struct device_attribute *attr,
> const char *buf, size_t count)
> {
> struct thermal_zone_device *tz = to_thermal_zone(dev);
> - int trip, ret;
> - int temperature;
> -
> - if (!tz->ops->set_trip_hyst)
> - return -EPERM;
> + struct thermal_trip trip;
> + int trip_id, ret;
>
> - if (sscanf(attr->attr.name, "trip_point_%d_hyst", &trip) != 1)
> + if (sscanf(attr->attr.name, "trip_point_%d_hyst", &trip_id) != 1)
> return -EINVAL;
>
> - if (kstrtoint(buf, 10, &temperature))
> - return -EINVAL;
> + ret = thermal_zone_get_trip(tz, trip_id, &trip);
> + if (ret)
> + return ret;
>
> - /*
> - * We are not doing any check on the 'temperature' value
> - * here. The driver implementing 'set_trip_hyst' has to
> - * take care of this.
> - */
> - ret = tz->ops->set_trip_hyst(tz, trip, temperature);
> + if (kstrtoint(buf, 10, &trip.hysteresis))
> + return -EINVAL;
>
> - if (!ret)
> - thermal_zone_set_trips(tz);
> + ret = thermal_zone_set_trip(tz, trip_id, &trip);
> + if (ret)
> + return ret;
>
> - return ret ? ret : count;
> + return count;
> }
>
> static ssize_t
> diff --git a/include/linux/thermal.h b/include/linux/thermal.h
> index feb8b61df746..66373f872237 100644
> --- a/include/linux/thermal.h
> +++ b/include/linux/thermal.h
> @@ -338,6 +338,9 @@ static inline void devm_thermal_of_zone_unregister(struct device *dev,
> int thermal_zone_get_trip(struct thermal_zone_device *tz, int trip_id,
> struct thermal_trip *trip);
>
> +int thermal_zone_set_trip(struct thermal_zone_device *tz, int trip_id,
> + const struct thermal_trip *trip);
> +
> int thermal_zone_get_num_trips(struct thermal_zone_device *tz);
>
> int thermal_zone_get_crit_temp(struct thermal_zone_device *tz, int *temp);
> --
> 2.34.1
>

2022-09-30 18:08:26

by Rafael J. Wysocki

[permalink] [raw]

Subject: Re: [PATCH v7 00/29] Rework the trip points creation

On Thu, Sep 29, 2022 at 9:35 PM Rafael J. Wysocki <[email protected]> wrote:
>
> On Thu, Sep 29, 2022 at 4:57 PM Daniel Lezcano
> <[email protected]> wrote:
> >
> > On 29/09/2022 15:58, Rafael J. Wysocki wrote:
> > > On Thu, Sep 29, 2022 at 2:26 PM Daniel Lezcano
> > > <[email protected]> wrote:
> > >>
> > >>
> > >> Hi Rafael,
> > >>
> > >> are you happy with the changes?
> > >
> > > I'll have a look and let you know.
> >
> > Great, thanks
>
> Well, because you have not added the history of changes to the
> patches, that will take more time than it would otherwise.

Done. I've sent ACKs and still had a comment on one patch (minor but
still). When that is addressed, the four initial core patches should
be good to go in.

I'm trusting you regarding the thermal/of changes (even though I think
that it would be good if someone involved in that code could review
them) and if you are confident about all of the driver changes, they
are fine with me too.

2022-09-30 18:30:36

by Rafael J. Wysocki

[permalink] [raw]

Subject: Re: [PATCH v7 04/29] thermal/core/governors: Use thermal_zone_get_trip() instead of ops functions

On Wed, Sep 28, 2022 at 11:01 PM Daniel Lezcano
<[email protected]> wrote:
>
> The governors are using the ops->get_trip_* functions, Replace these
> calls with thermal_zone_get_trip().
>
> Signed-off-by: Daniel Lezcano <[email protected]>
> Reviewed-by: Zhang Rui <[email protected]>
> Reviewed-by: Lukasz Luba <[email protected]> # IPA

Acked-by: Rafael J. Wysocki <[email protected]>

> ---
> drivers/thermal/gov_bang_bang.c | 39 +++++++++++---------
> drivers/thermal/gov_fair_share.c | 18 ++++------
> drivers/thermal/gov_power_allocator.c | 51 ++++++++++++---------------
> drivers/thermal/gov_step_wise.c | 22 ++++++------
> 4 files changed, 62 insertions(+), 68 deletions(-)
>
> diff --git a/drivers/thermal/gov_bang_bang.c b/drivers/thermal/gov_bang_bang.c
> index a08bbe33be96..af7737ec90c3 100644
> --- a/drivers/thermal/gov_bang_bang.c
> +++ b/drivers/thermal/gov_bang_bang.c
> @@ -13,26 +13,28 @@
>
> #include "thermal_core.h"
>
> -static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip)
> +static int thermal_zone_trip_update(struct thermal_zone_device *tz, int trip_id)
> {
> - int trip_temp, trip_hyst;
> + struct thermal_trip trip;
> struct thermal_instance *instance;
> + int ret;
>
> - tz->ops->get_trip_temp(tz, trip, &trip_temp);
> -
> - if (!tz->ops->get_trip_hyst) {
> - pr_warn_once("Undefined get_trip_hyst for thermal zone %s - "
> - "running with default hysteresis zero\n", tz->type);
> - trip_hyst = 0;
> - } else
> - tz->ops->get_trip_hyst(tz, trip, &trip_hyst);
> + ret = __thermal_zone_get_trip(tz, trip_id, &trip);
> + if (ret) {
> + pr_warn_once("Failed to retrieve trip point %d\n", trip_id);
> + return ret;
> + }
> +
> + if (!trip.hysteresis)
> + dev_info_once(&tz->device,
> + "Zero hysteresis value for thermal zone %s\n", tz->type);
>
> dev_dbg(&tz->device, "Trip%d[temp=%d]:temp=%d:hyst=%d\n",
> - trip, trip_temp, tz->temperature,
> - trip_hyst);
> + trip_id, trip.temperature, tz->temperature,
> + trip.hysteresis);
>
> list_for_each_entry(instance, &tz->thermal_instances, tz_node) {
> - if (instance->trip != trip)
> + if (instance->trip != trip_id)
> continue;
>
> /* in case fan is in initial state, switch the fan off */
> @@ -50,10 +52,10 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip)
> * enable fan when temperature exceeds trip_temp and disable
> * the fan in case it falls below trip_temp minus hysteresis
> */
> - if (instance->target == 0 && tz->temperature >= trip_temp)
> + if (instance->target == 0 && tz->temperature >= trip.temperature)
> instance->target = 1;
> else if (instance->target == 1 &&
> - tz->temperature <= trip_temp - trip_hyst)
> + tz->temperature <= trip.temperature - trip.hysteresis)
> instance->target = 0;
>
> dev_dbg(&instance->cdev->device, "target=%d\n",
> @@ -63,6 +65,8 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip)
> instance->cdev->updated = false; /* cdev needs update */
> mutex_unlock(&instance->cdev->lock);
> }
> +
> + return 0;
> }
>
> /**
> @@ -95,10 +99,13 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip)
> static int bang_bang_control(struct thermal_zone_device *tz, int trip)
> {
> struct thermal_instance *instance;
> + int ret;
>
> lockdep_assert_held(&tz->lock);
>
> - thermal_zone_trip_update(tz, trip);
> + ret = thermal_zone_trip_update(tz, trip);
> + if (ret)
> + return ret;
>
> list_for_each_entry(instance, &tz->thermal_instances, tz_node)
> thermal_cdev_update(instance->cdev);
> diff --git a/drivers/thermal/gov_fair_share.c b/drivers/thermal/gov_fair_share.c
> index a4ee4661e9cc..bca60cd21655 100644
> --- a/drivers/thermal/gov_fair_share.c
> +++ b/drivers/thermal/gov_fair_share.c
> @@ -21,16 +21,12 @@
> */
> static int get_trip_level(struct thermal_zone_device *tz)
> {
> - int count = 0;
> - int trip_temp;
> - enum thermal_trip_type trip_type;
> -
> - if (tz->num_trips == 0 || !tz->ops->get_trip_temp)
> - return 0;
> + struct thermal_trip trip;
> + int count;
>
> for (count = 0; count < tz->num_trips; count++) {
> - tz->ops->get_trip_temp(tz, count, &trip_temp);
> - if (tz->temperature < trip_temp)
> + __thermal_zone_get_trip(tz, count, &trip);
> + if (tz->temperature < trip.temperature)
> break;
> }
>
> @@ -38,10 +34,8 @@ static int get_trip_level(struct thermal_zone_device *tz)
> * count > 0 only if temperature is greater than first trip
> * point, in which case, trip_point = count - 1
> */
> - if (count > 0) {
> - tz->ops->get_trip_type(tz, count - 1, &trip_type);
> - trace_thermal_zone_trip(tz, count - 1, trip_type);
> - }
> + if (count > 0)
> + trace_thermal_zone_trip(tz, count - 1, trip.type);
>
> return count;
> }
> diff --git a/drivers/thermal/gov_power_allocator.c b/drivers/thermal/gov_power_allocator.c
> index 2d1aeaba38a8..eafb28839281 100644
> --- a/drivers/thermal/gov_power_allocator.c
> +++ b/drivers/thermal/gov_power_allocator.c
> @@ -125,16 +125,15 @@ static void estimate_pid_constants(struct thermal_zone_device *tz,
> u32 sustainable_power, int trip_switch_on,
> int control_temp)
> {
> + struct thermal_trip trip;
> + u32 temperature_threshold = control_temp;
> int ret;
> - int switch_on_temp;
> - u32 temperature_threshold;
> s32 k_i;
>
> - ret = tz->ops->get_trip_temp(tz, trip_switch_on, &switch_on_temp);
> - if (ret)
> - switch_on_temp = 0;
> + ret = __thermal_zone_get_trip(tz, trip_switch_on, &trip);
> + if (!ret)
> + temperature_threshold -= trip.temperature;
>
> - temperature_threshold = control_temp - switch_on_temp;
> /*
> * estimate_pid_constants() tries to find appropriate default
> * values for thermal zones that don't provide them. If a
> @@ -520,10 +519,10 @@ static void get_governor_trips(struct thermal_zone_device *tz,
> last_passive = INVALID_TRIP;
>
> for (i = 0; i < tz->num_trips; i++) {
> - enum thermal_trip_type type;
> + struct thermal_trip trip;
> int ret;
>
> - ret = tz->ops->get_trip_type(tz, i, &type);
> + ret = __thermal_zone_get_trip(tz, i, &trip);
> if (ret) {
> dev_warn(&tz->device,
> "Failed to get trip point %d type: %d\n", i,
> @@ -531,14 +530,14 @@ static void get_governor_trips(struct thermal_zone_device *tz,
> continue;
> }
>
> - if (type == THERMAL_TRIP_PASSIVE) {
> + if (trip.type == THERMAL_TRIP_PASSIVE) {
> if (!found_first_passive) {
> params->trip_switch_on = i;
> found_first_passive = true;
> } else {
> last_passive = i;
> }
> - } else if (type == THERMAL_TRIP_ACTIVE) {
> + } else if (trip.type == THERMAL_TRIP_ACTIVE) {
> last_active = i;
> } else {
> break;
> @@ -633,7 +632,7 @@ static int power_allocator_bind(struct thermal_zone_device *tz)
> {
> int ret;
> struct power_allocator_params *params;
> - int control_temp;
> + struct thermal_trip trip;
>
> ret = check_power_actors(tz);
> if (ret)
> @@ -659,13 +658,12 @@ static int power_allocator_bind(struct thermal_zone_device *tz)
> get_governor_trips(tz, params);
>
> if (tz->num_trips > 0) {
> - ret = tz->ops->get_trip_temp(tz,
> - params->trip_max_desired_temperature,
> - &control_temp);
> + ret = __thermal_zone_get_trip(tz, params->trip_max_desired_temperature,
> + &trip);
> if (!ret)
> estimate_pid_constants(tz, tz->tzp->sustainable_power,
> params->trip_switch_on,
> - control_temp);
> + trip.temperature);
> }
>
> reset_pid_controller(params);
> @@ -695,11 +693,11 @@ static void power_allocator_unbind(struct thermal_zone_device *tz)
> tz->governor_data = NULL;
> }
>
> -static int power_allocator_throttle(struct thermal_zone_device *tz, int trip)
> +static int power_allocator_throttle(struct thermal_zone_device *tz, int trip_id)
> {
> - int ret;
> - int switch_on_temp, control_temp;
> struct power_allocator_params *params = tz->governor_data;
> + struct thermal_trip trip;
> + int ret;
> bool update;
>
> lockdep_assert_held(&tz->lock);
> @@ -708,13 +706,12 @@ static int power_allocator_throttle(struct thermal_zone_device *tz, int trip)
> * We get called for every trip point but we only need to do
> * our calculations once
> */
> - if (trip != params->trip_max_desired_temperature)
> + if (trip_id != params->trip_max_desired_temperature)
> return 0;
>
> - ret = tz->ops->get_trip_temp(tz, params->trip_switch_on,
> - &switch_on_temp);
> - if (!ret && (tz->temperature < switch_on_temp)) {
> - update = (tz->last_temperature >= switch_on_temp);
> + ret = __thermal_zone_get_trip(tz, params->trip_switch_on, &trip);
> + if (!ret && (tz->temperature < trip.temperature)) {
> + update = (tz->last_temperature >= trip.temperature);
> tz->passive = 0;
> reset_pid_controller(params);
> allow_maximum_power(tz, update);
> @@ -723,16 +720,14 @@ static int power_allocator_throttle(struct thermal_zone_device *tz, int trip)
>
> tz->passive = 1;
>
> - ret = tz->ops->get_trip_temp(tz, params->trip_max_desired_temperature,
> - &control_temp);
> + ret = __thermal_zone_get_trip(tz, params->trip_max_desired_temperature, &trip);
> if (ret) {
> - dev_warn(&tz->device,
> - "Failed to get the maximum desired temperature: %d\n",
> + dev_warn(&tz->device, "Failed to get the maximum desired temperature: %d\n",
> ret);
> return ret;
> }
>
> - return allocate_power(tz, control_temp);
> + return allocate_power(tz, trip.temperature);
> }
>
> static struct thermal_governor thermal_gov_power_allocator = {
> diff --git a/drivers/thermal/gov_step_wise.c b/drivers/thermal/gov_step_wise.c
> index cdd3354bc27f..31235e169c5a 100644
> --- a/drivers/thermal/gov_step_wise.c
> +++ b/drivers/thermal/gov_step_wise.c
> @@ -95,30 +95,28 @@ static void update_passive_instance(struct thermal_zone_device *tz,
> tz->passive += value;
> }
>
> -static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip)
> +static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip_id)
> {
> - int trip_temp;
> - enum thermal_trip_type trip_type;
> enum thermal_trend trend;
> struct thermal_instance *instance;
> + struct thermal_trip trip;
> bool throttle = false;
> int old_target;
>
> - tz->ops->get_trip_temp(tz, trip, &trip_temp);
> - tz->ops->get_trip_type(tz, trip, &trip_type);
> + __thermal_zone_get_trip(tz, trip_id, &trip);
>
> - trend = get_tz_trend(tz, trip);
> + trend = get_tz_trend(tz, trip_id);
>
> - if (tz->temperature >= trip_temp) {
> + if (tz->temperature >= trip.temperature) {
> throttle = true;
> - trace_thermal_zone_trip(tz, trip, trip_type);
> + trace_thermal_zone_trip(tz, trip_id, trip.type);
> }
>
> dev_dbg(&tz->device, "Trip%d[type=%d,temp=%d]:trend=%d,throttle=%d\n",
> - trip, trip_type, trip_temp, trend, throttle);
> + trip_id, trip.type, trip.temperature, trend, throttle);
>
> list_for_each_entry(instance, &tz->thermal_instances, tz_node) {
> - if (instance->trip != trip)
> + if (instance->trip != trip_id)
> continue;
>
> old_target = instance->target;
> @@ -132,11 +130,11 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip)
> /* Activate a passive thermal instance */
> if (old_target == THERMAL_NO_TARGET &&
> instance->target != THERMAL_NO_TARGET)
> - update_passive_instance(tz, trip_type, 1);
> + update_passive_instance(tz, trip.type, 1);
> /* Deactivate a passive thermal instance */
> else if (old_target != THERMAL_NO_TARGET &&
> instance->target == THERMAL_NO_TARGET)
> - update_passive_instance(tz, trip_type, -1);
> + update_passive_instance(tz, trip.type, -1);
>
> instance->initialized = true;
> mutex_lock(&instance->cdev->lock);
> --
> 2.34.1
>

2022-10-03 08:31:07

by Lukasz Luba

[permalink] [raw]

Subject: Re: [PATCH v7 00/29] Rework the trip points creation

Hi Rafael and Daniel,

[I had to remove some CC entries due to internal limits]

On 9/30/22 18:39, Rafael J. Wysocki wrote:
> On Thu, Sep 29, 2022 at 9:35 PM Rafael J. Wysocki <[email protected]> wrote:
>>
>> On Thu, Sep 29, 2022 at 4:57 PM Daniel Lezcano
>> <[email protected]> wrote:
>>>
>>> On 29/09/2022 15:58, Rafael J. Wysocki wrote:
>>>> On Thu, Sep 29, 2022 at 2:26 PM Daniel Lezcano
>>>> <[email protected]> wrote:
>>>>>
>>>>>
>>>>> Hi Rafael,
>>>>>
>>>>> are you happy with the changes?
>>>>
>>>> I'll have a look and let you know.
>>>
>>> Great, thanks
>>
>> Well, because you have not added the history of changes to the
>> patches, that will take more time than it would otherwise.
>
> Done. I've sent ACKs and still had a comment on one patch (minor but
> still). When that is addressed, the four initial core patches should
> be good to go in.
>
> I'm trusting you regarding the thermal/of changes (even though I think
> that it would be good if someone involved in that code could review
> them) and if you are confident about all of the driver changes, they
> are fine with me too.

Sorry for being late. I have been busy with some internal bug hunting.
I'll review the code today and test it on my dev boards. Although,
I have only ~4 different platforms so would cover a slice of this patch
set. The core changes should be covered.

Regards,
Lukasz

2022-10-03 09:29:47

by Lukasz Luba

[permalink] [raw]

Subject: Re: [PATCH v7 00/29] Rework the trip points creation

Hi Rafael and Daniel

On 9/30/22 18:39, Rafael J. Wysocki wrote:
> On Thu, Sep 29, 2022 at 9:35 PM Rafael J. Wysocki <[email protected]> wrote:
>>
>> On Thu, Sep 29, 2022 at 4:57 PM Daniel Lezcano
>> <[email protected]> wrote:
>>>
>>> On 29/09/2022 15:58, Rafael J. Wysocki wrote:
>>>> On Thu, Sep 29, 2022 at 2:26 PM Daniel Lezcano
>>>> <[email protected]> wrote:
>>>>>
>>>>>
>>>>> Hi Rafael,
>>>>>
>>>>> are you happy with the changes?
>>>>
>>>> I'll have a look and let you know.
>>>
>>> Great, thanks
>>
>> Well, because you have not added the history of changes to the
>> patches, that will take more time than it would otherwise.
>
> Done. I've sent ACKs and still had a comment on one patch (minor but
> still). When that is addressed, the four initial core patches should
> be good to go in.
>
> I'm trusting you regarding the thermal/of changes (even though I think
> that it would be good if someone involved in that code could review
> them) and if you are confident about all of the driver changes, they
> are fine with me too.

Sorry for being late. I have been busy with some internal bug hunting.
I'll check the code today and test it on my dev boards.

Regards,
Lukasz