Merge branch 'thermal-core'

Merge thermal core changes for 6.9:

 - Minor fixes for thermal governors (Rafael J. Wysocki, Di Shen).

 - Trip point handling fixes for the iwlwifi wireless driver (Rafael J.
   Wysocki).

 - Code cleanups (Rafael J. Wysocki, AngeloGioacchino Del Regno).

* thermal-tmp:
  thermal: gov_power_allocator: Avoid overwriting PID coefficients from setup time
  thermal: sysfs: Fix up white space in trip_point_temp_store()
  iwlwifi: mvm: Use for_each_thermal_trip() for walking trip points
  iwlwifi: mvm: Populate trip table before registering thermal zone
  iwlwifi: mvm: Drop unused fw_trips_index[] from iwl_mvm_thermal_device
  thermal: core: Change governor name to const char pointer
  thermal: gov_bang_bang: Fix possible cooling device state ping-pong
  thermal: gov_fair_share: Fix dependency on trip points ordering

2 files changed, 33 insertions, 37 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
index 40627961b834..a618824f0b65 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
@@ -539,12 +539,10 @@ struct iwl_mvm_tt_mgmt {
 /**
  *struct iwl_mvm_thermal_device - thermal zone related data
  * @temp_trips: temperature thresholds for report
- * @fw_trips_index: keep indexes to original array - temp_trips
  * @tzone: thermal zone device data
 */
 struct iwl_mvm_thermal_device {
 	struct thermal_trip trips[IWL_MAX_DTS_TRIPS];
-	u8 fw_trips_index[IWL_MAX_DTS_TRIPS];
 	struct thermal_zone_device *tzone;
 };
 
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tt.c b/drivers/net/wireless/intel/iwlwifi/mvm/tt.c
index dee9c367dcd3..d2a00cbcbc42 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/tt.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/tt.c
@@ -555,6 +555,22 @@ static int compare_temps(const void *a, const void *b)
 	return ((s16)le16_to_cpu(*(__le16 *)a) -
 		(s16)le16_to_cpu(*(__le16 *)b));
 }
+
+struct iwl_trip_walk_data {
+	__le16 *thresholds;
+	int count;
+};
+
+static int iwl_trip_temp_cb(struct thermal_trip *trip, void *arg)
+{
+	struct iwl_trip_walk_data *twd = arg;
+
+	if (trip->temperature == THERMAL_TEMP_INVALID)
+		return 0;
+
+	twd->thresholds[twd->count++] = cpu_to_le16((s16)(trip->temperature / 1000));
+	return 0;
+}
 #endif
 
 int iwl_mvm_send_temp_report_ths_cmd(struct iwl_mvm *mvm)
@@ -562,42 +578,25 @@ int iwl_mvm_send_temp_report_ths_cmd(struct iwl_mvm *mvm)
 	struct temp_report_ths_cmd cmd = {0};
 	int ret;
 #ifdef CONFIG_THERMAL
-	int i, j, idx = 0;
+	struct iwl_trip_walk_data twd = { .thresholds = cmd.thresholds, .count = 0 };
 
 	lockdep_assert_held(&mvm->mutex);
 
 	if (!mvm->tz_device.tzone)
 		goto send;
 
-	/* The driver holds array of temperature trips that are unsorted
-	 * and uncompressed, the FW should get it compressed and sorted
+	/*
+	 * The thermal core holds an array of temperature trips that are
+	 * unsorted and uncompressed, the FW should get it compressed and
+	 * sorted.
 	 */
 
 	/* compress trips to cmd array, remove uninitialized values*/
-	for (i = 0; i < IWL_MAX_DTS_TRIPS; i++) {
-		if (mvm->tz_device.trips[i].temperature != INT_MIN) {
-			cmd.thresholds[idx++] =
-				cpu_to_le16((s16)(mvm->tz_device.trips[i].temperature / 1000));
-		}
-	}
-	cmd.num_temps = cpu_to_le32(idx);
+	for_each_thermal_trip(mvm->tz_device.tzone, iwl_trip_temp_cb, &twd);
 
-	if (!idx)
-		goto send;
-
-	/*sort cmd array*/
-	sort(cmd.thresholds, idx, sizeof(s16), compare_temps, NULL);
-
-	/* we should save the indexes of trips because we sort
-	 * and compress the orginal array
-	 */
-	for (i = 0; i < idx; i++) {
-		for (j = 0; j < IWL_MAX_DTS_TRIPS; j++) {
-			if ((int)(le16_to_cpu(cmd.thresholds[i]) * 1000) ==
-			    mvm->tz_device.trips[j].temperature)
-				mvm->tz_device.fw_trips_index[i] = j;
-		}
-	}
+	cmd.num_temps = cpu_to_le32(twd.count);
+	if (twd.count)
+		sort(cmd.thresholds, twd.count, sizeof(s16), compare_temps, NULL);
 
 send:
 #endif
@@ -686,6 +685,14 @@ static void iwl_mvm_thermal_zone_register(struct iwl_mvm *mvm)
 	BUILD_BUG_ON(ARRAY_SIZE(name) >= THERMAL_NAME_LENGTH);
 
 	sprintf(name, "iwlwifi_%u", atomic_inc_return(&counter) & 0xFF);
+	/*
+	 * 0 is a valid temperature,
+	 * so initialize the array with S16_MIN which invalid temperature
+	 */
+	for (i = 0 ; i < IWL_MAX_DTS_TRIPS; i++) {
+		mvm->tz_device.trips[i].temperature = THERMAL_TEMP_INVALID;
+		mvm->tz_device.trips[i].type = THERMAL_TRIP_PASSIVE;
+	}
 	mvm->tz_device.tzone = thermal_zone_device_register_with_trips(name,
 							mvm->tz_device.trips,
 							IWL_MAX_DTS_TRIPS,
@@ -704,15 +711,6 @@ static void iwl_mvm_thermal_zone_register(struct iwl_mvm *mvm)
 	if (ret) {
 		IWL_DEBUG_TEMP(mvm, "Failed to enable thermal zone\n");
 		thermal_zone_device_unregister(mvm->tz_device.tzone);
-		return;
-	}
-
-	/* 0 is a valid temperature,
-	 * so initialize the array with S16_MIN which invalid temperature
-	 */
-	for (i = 0 ; i < IWL_MAX_DTS_TRIPS; i++) {
-		mvm->tz_device.trips[i].temperature = INT_MIN;
-		mvm->tz_device.trips[i].type = THERMAL_TRIP_PASSIVE;
 	}
 }