@@ -24,16 +24,8 @@
#define MLXSW_THERMAL_ZONE_MAX_NAME 16
#define MLXSW_THERMAL_TEMP_SCORE_MAX GENMASK(31, 0)
#define MLXSW_THERMAL_MAX_STATE 10
+#define MLXSW_THERMAL_MIN_STATE 2
#define MLXSW_THERMAL_MAX_DUTY 255
-/* Minimum and maximum fan allowed speed in percent: from 20% to 100%. Values
- * MLXSW_THERMAL_MAX_STATE + x, where x is between 2 and 10 are used for
- * setting fan speed dynamic minimum. For example, if value is set to 14 (40%)
- * cooling levels vector will be set to 4, 4, 4, 4, 4, 5, 6, 7, 8, 9, 10 to
- * introduce PWM speed in percent: 40, 40, 40, 40, 40, 50, 60. 70, 80, 90, 100.
- */
-#define MLXSW_THERMAL_SPEED_MIN (MLXSW_THERMAL_MAX_STATE + 2)
-#define MLXSW_THERMAL_SPEED_MAX (MLXSW_THERMAL_MAX_STATE * 2)
-#define MLXSW_THERMAL_SPEED_MIN_LEVEL 2 /* 20% */
/* External cooling devices, allowed for binding to mlxsw thermal zones. */
static char * const mlxsw_thermal_external_allowed_cdev[] = {
@@ -646,49 +638,16 @@ static int mlxsw_thermal_set_cur_state(struct thermal_cooling_device *cdev,
struct mlxsw_thermal *thermal = cdev->devdata;
struct device *dev = thermal->bus_info->dev;
char mfsc_pl[MLXSW_REG_MFSC_LEN];
- unsigned long cur_state, i;
int idx;
- u8 duty;
int err;
+ if (state > MLXSW_THERMAL_MAX_STATE)
+ return -EINVAL;
+
idx = mlxsw_get_cooling_device_idx(thermal, cdev);
if (idx < 0)
return idx;
- /* Verify if this request is for changing allowed fan dynamical
- * minimum. If it is - update cooling levels accordingly and update
- * state, if current state is below the newly requested minimum state.
- * For example, if current state is 5, and minimal state is to be
- * changed from 4 to 6, thermal->cooling_levels[0 to 5] will be changed
- * all from 4 to 6. And state 5 (thermal->cooling_levels[4]) should be
- * overwritten.
- */
- if (state >= MLXSW_THERMAL_SPEED_MIN &&
- state <= MLXSW_THERMAL_SPEED_MAX) {
- state -= MLXSW_THERMAL_MAX_STATE;
- for (i = 0; i <= MLXSW_THERMAL_MAX_STATE; i++)
- thermal->cooling_levels[i] = max(state, i);
-
- mlxsw_reg_mfsc_pack(mfsc_pl, idx, 0);
- err = mlxsw_reg_query(thermal->core, MLXSW_REG(mfsc), mfsc_pl);
- if (err)
- return err;
-
- duty = mlxsw_reg_mfsc_pwm_duty_cycle_get(mfsc_pl);
- cur_state = mlxsw_duty_to_state(duty);
-
- /* If current fan state is lower than requested dynamical
- * minimum, increase fan speed up to dynamical minimum.
- */
- if (state < cur_state)
- return 0;
-
- state = cur_state;
- }
-
- if (state > MLXSW_THERMAL_MAX_STATE)
- return -EINVAL;
-
/* Normalize the state to the valid speed range. */
state = thermal->cooling_levels[state];
mlxsw_reg_mfsc_pack(mfsc_pl, idx, mlxsw_state_to_duty(state));
@@ -998,8 +957,7 @@ int mlxsw_thermal_init(struct mlxsw_core *core,
/* Initialize cooling levels per PWM state. */
for (i = 0; i < MLXSW_THERMAL_MAX_STATE; i++)
- thermal->cooling_levels[i] = max(MLXSW_THERMAL_SPEED_MIN_LEVEL,
- i);
+ thermal->cooling_levels[i] = max(MLXSW_THERMAL_MIN_STATE, i);
thermal->polling_delay = bus_info->low_frequency ?
MLXSW_THERMAL_SLOW_POLL_INT :