2024-02-09 14:18:50

by Rafael J. Wysocki

Subject: [PATCH v1 5/9] mlxsw: core_thermal: Set THERMAL_TRIP_WRITABLE_TEMP directly

From: Rafael J. Wysocki <[email protected]>

It is now possible to flag trip points with THERMAL_TRIP_WRITABLE_TEMP
to allow their temperature to be set from user space via sysfs instead
of using a nonzero writable trips mask during thermal zone registration,
so make the mlxsw code do that.

No intentional functional impact.

Note that this change is requisite for dropping the mask argument from
thermal_zone_device_register_with_trips() going forward.

Signed-off-by: Rafael J. Wysocki <[email protected]>
---
drivers/net/ethernet/mellanox/mlxsw/core_thermal.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)

Index: linux-pm/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
===================================================================
--- linux-pm.orig/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
+++ linux-pm/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
@@ -44,16 +44,19 @@ static const struct thermal_trip default
.type = THERMAL_TRIP_ACTIVE,
.temperature = MLXSW_THERMAL_ASIC_TEMP_NORM,
.hysteresis = MLXSW_THERMAL_HYSTERESIS_TEMP,
+ .flags = THERMAL_TRIP_WRITABLE_TEMP,
},
{
/* In range - 40-100% PWM */
.type = THERMAL_TRIP_ACTIVE,
.temperature = MLXSW_THERMAL_ASIC_TEMP_HIGH,
.hysteresis = MLXSW_THERMAL_HYSTERESIS_TEMP,
+ .flags = THERMAL_TRIP_WRITABLE_TEMP,
},
{ /* Warning */
.type = THERMAL_TRIP_HOT,
.temperature = MLXSW_THERMAL_ASIC_TEMP_HOT,
+ .flags = THERMAL_TRIP_WRITABLE_TEMP,
},
};

@@ -62,16 +65,19 @@ static const struct thermal_trip default
.type = THERMAL_TRIP_ACTIVE,
.temperature = MLXSW_THERMAL_MODULE_TEMP_NORM,
.hysteresis = MLXSW_THERMAL_HYSTERESIS_TEMP,
+ .flags = THERMAL_TRIP_WRITABLE_TEMP,
},
{
/* In range - 40-100% PWM */
.type = THERMAL_TRIP_ACTIVE,
.temperature = MLXSW_THERMAL_MODULE_TEMP_HIGH,
.hysteresis = MLXSW_THERMAL_HYSTERESIS_TEMP,
+ .flags = THERMAL_TRIP_WRITABLE_TEMP,
},
{ /* Warning */
.type = THERMAL_TRIP_HOT,
.temperature = MLXSW_THERMAL_MODULE_TEMP_HOT,
+ .flags = THERMAL_TRIP_WRITABLE_TEMP,
},
};

@@ -92,9 +98,6 @@ static const struct mlxsw_cooling_states

#define MLXSW_THERMAL_NUM_TRIPS ARRAY_SIZE(default_thermal_trips)

-/* Make sure all trips are writable */
-#define MLXSW_THERMAL_TRIP_MASK (BIT(MLXSW_THERMAL_NUM_TRIPS) - 1)
-
struct mlxsw_thermal;

struct mlxsw_thermal_module {
@@ -420,7 +423,7 @@ mlxsw_thermal_module_tz_init(struct mlxs
module_tz->tzdev = thermal_zone_device_register_with_trips(tz_name,
module_tz->trips,
MLXSW_THERMAL_NUM_TRIPS,
- MLXSW_THERMAL_TRIP_MASK,
+ 0,
module_tz,
&mlxsw_thermal_module_ops,
&mlxsw_thermal_params,
@@ -548,7 +551,7 @@ mlxsw_thermal_gearbox_tz_init(struct mlx
gearbox_tz->tzdev = thermal_zone_device_register_with_trips(tz_name,
gearbox_tz->trips,
MLXSW_THERMAL_NUM_TRIPS,
- MLXSW_THERMAL_TRIP_MASK,
+ 0,
gearbox_tz,
&mlxsw_thermal_gearbox_ops,
&mlxsw_thermal_params, 0,
@@ -773,7 +776,7 @@ int mlxsw_thermal_init(struct mlxsw_core
thermal->tzdev = thermal_zone_device_register_with_trips("mlxsw",
thermal->trips,
MLXSW_THERMAL_NUM_TRIPS,
- MLXSW_THERMAL_TRIP_MASK,
+ 0,
thermal,
&mlxsw_thermal_ops,
&mlxsw_thermal_params, 0,

2024-02-11 15:16:20

by Ido Schimmel

Subject: Re: [PATCH v1 5/9] mlxsw: core_thermal: Set THERMAL_TRIP_WRITABLE_TEMP directly

On Fri, Feb 09, 2024 at 03:08:43PM +0100, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <[email protected]>
>
> It is now possible to flag trip points with THERMAL_TRIP_WRITABLE_TEMP
> to allow their temperature to be set from user space via sysfs instead
> of using a nonzero writable trips mask during thermal zone registration,
> so make the mlxsw code do that.
>
> No intentional functional impact.
>
> Note that this change is requisite for dropping the mask argument from
> thermal_zone_device_register_with_trips() going forward.
>
> Signed-off-by: Rafael J. Wysocki <[email protected]>

Reviewed-by: Ido Schimmel <[email protected]>