diff options
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlxsw/core_thermal.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/core_thermal.c | 37 |
1 files changed, 28 insertions, 9 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c b/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c index b1f9b459766c..dbf9a845084a 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c +++ b/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c @@ -15,6 +15,7 @@ #define MLXSW_THERMAL_POLL_INT 1000 /* ms */ #define MLXSW_THERMAL_SLOW_POLL_INT 20000 /* ms */ #define MLXSW_THERMAL_MAX_TEMP 110000 /* 110C */ +#define MLXSW_THERMAL_HYSTERESIS_TEMP 5000 /* 5C */ #define MLXSW_THERMAL_MAX_STATE 10 #define MLXSW_THERMAL_MAX_DUTY 255 /* Minimum and maximum fan allowed speed in percent: from 20% to 100%. Values @@ -30,6 +31,7 @@ struct mlxsw_thermal_trip { int type; int temp; + int hyst; int min_state; int max_state; }; @@ -38,25 +40,22 @@ static const struct mlxsw_thermal_trip default_thermal_trips[] = { { /* In range - 0-40% PWM */ .type = THERMAL_TRIP_ACTIVE, .temp = 75000, + .hyst = MLXSW_THERMAL_HYSTERESIS_TEMP, .min_state = 0, .max_state = (4 * MLXSW_THERMAL_MAX_STATE) / 10, }, - { /* High - 40-100% PWM */ + { + /* In range - 40-100% PWM */ .type = THERMAL_TRIP_ACTIVE, .temp = 80000, + .hyst = MLXSW_THERMAL_HYSTERESIS_TEMP, .min_state = (4 * MLXSW_THERMAL_MAX_STATE) / 10, .max_state = MLXSW_THERMAL_MAX_STATE, }, - { - /* Very high - 100% PWM */ - .type = THERMAL_TRIP_ACTIVE, - .temp = 85000, - .min_state = MLXSW_THERMAL_MAX_STATE, - .max_state = MLXSW_THERMAL_MAX_STATE, - }, { /* Warning */ .type = THERMAL_TRIP_HOT, - .temp = 105000, + .temp = 85000, + .hyst = MLXSW_THERMAL_HYSTERESIS_TEMP, .min_state = MLXSW_THERMAL_MAX_STATE, .max_state = MLXSW_THERMAL_MAX_STATE, }, @@ -246,6 +245,24 @@ static int mlxsw_thermal_set_trip_temp(struct thermal_zone_device *tzdev, return 0; } +static int mlxsw_thermal_get_trip_hyst(struct thermal_zone_device *tzdev, + int trip, int *p_hyst) +{ + struct mlxsw_thermal *thermal = tzdev->devdata; + + *p_hyst = thermal->trips[trip].hyst; + return 0; +} + +static int mlxsw_thermal_set_trip_hyst(struct thermal_zone_device *tzdev, + int trip, int hyst) +{ + struct mlxsw_thermal *thermal = tzdev->devdata; + + thermal->trips[trip].hyst = hyst; + return 0; +} + static struct thermal_zone_device_ops mlxsw_thermal_ops = { .bind = mlxsw_thermal_bind, .unbind = mlxsw_thermal_unbind, @@ -255,6 +272,8 @@ static struct thermal_zone_device_ops mlxsw_thermal_ops = { .get_trip_type = mlxsw_thermal_get_trip_type, .get_trip_temp = mlxsw_thermal_get_trip_temp, .set_trip_temp = mlxsw_thermal_set_trip_temp, + .get_trip_hyst = mlxsw_thermal_get_trip_hyst, + .set_trip_hyst = mlxsw_thermal_set_trip_hyst, }; static int mlxsw_thermal_get_max_state(struct thermal_cooling_device *cdev, |