[PATCH 2/5] thermal/drivers/intel: Use generic trip points for intel_pch

[Daniel Lezcano]

From: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>

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 <daniel.lezcano@xxxxxxxxxx>
---
 drivers/thermal/intel/intel_pch_thermal.c | 88 +++++------------------
 1 file changed, 19 insertions(+), 69 deletions(-)

diff --git a/drivers/thermal/intel/intel_pch_thermal.c b/drivers/thermal/intel/intel_pch_thermal.c
index dabf11a687a1..530fe9b38381 100644
--- a/drivers/thermal/intel/intel_pch_thermal.c
+++ b/drivers/thermal/intel/intel_pch_thermal.c
@@ -65,6 +65,8 @@
 #define WPT_TEMP_OFFSET	(PCH_TEMP_OFFSET * MILLIDEGREE_PER_DEGREE)
 #define GET_PCH_TEMP(x)	(((x) / 2) + PCH_TEMP_OFFSET)
 
+#define PCH_MAX_TRIPS 3 /* critical, hot, passive */
+
 /* Amount of time for each cooling delay, 100ms by default for now */
 static unsigned int delay_timeout = 100;
 module_param(delay_timeout, int, 0644);
@@ -82,12 +84,7 @@ struct pch_thermal_device {
 	const struct pch_dev_ops *ops;
 	struct pci_dev *pdev;
 	struct thermal_zone_device *tzd;
-	int crt_trip_id;
-	unsigned long crt_temp;
-	int hot_trip_id;
-	unsigned long hot_temp;
-	int psv_trip_id;
-	unsigned long psv_temp;
+	struct thermal_trip trips[PCH_MAX_TRIPS];
 	bool bios_enabled;
 };
 
@@ -102,33 +99,22 @@ static void pch_wpt_add_acpi_psv_trip(struct pch_thermal_device *ptd,
 				      int *nr_trips)
 {
 	struct acpi_device *adev;
-
-	ptd->psv_trip_id = -1;
+	int ret;
 
 	adev = ACPI_COMPANION(&ptd->pdev->dev);
-	if (adev) {
-		unsigned long long r;
-		acpi_status status;
-
-		status = acpi_evaluate_integer(adev->handle, "_PSV", NULL,
-					       &r);
-		if (ACPI_SUCCESS(status)) {
-			unsigned long trip_temp;
-
-			trip_temp = deci_kelvin_to_millicelsius(r);
-			if (trip_temp) {
-				ptd->psv_temp = trip_temp;
-				ptd->psv_trip_id = *nr_trips;
-				++(*nr_trips);
-			}
-		}
-	}
+	if (!adev)
+		return;
+		
+	ret = thermal_acpi_trip_psv(adev, &ptd->trips[*nr_trips]);
+	if (ret)
+		return;
+
+	++(*nr_trips);
 }
 #else
 static void pch_wpt_add_acpi_psv_trip(struct pch_thermal_device *ptd,
 				      int *nr_trips)
 {
-	ptd->psv_trip_id = -1;
 
 }
 #endif
@@ -163,21 +149,19 @@ static int pch_wpt_init(struct pch_thermal_device *ptd, int *nr_trips)
 	}
 
 read_trips:
-	ptd->crt_trip_id = -1;
 	trip_temp = readw(ptd->hw_base + WPT_CTT);
 	trip_temp &= 0x1FF;
 	if (trip_temp) {
-		ptd->crt_temp = GET_WPT_TEMP(trip_temp);
-		ptd->crt_trip_id = 0;
+		ptd->trips[*nr_trips].temperature = GET_WPT_TEMP(trip_temp);
+		ptd->trips[*nr_trips].type = THERMAL_TRIP_CRITICAL;
 		++(*nr_trips);
 	}
 
-	ptd->hot_trip_id = -1;
 	trip_temp = readw(ptd->hw_base + WPT_PHL);
 	trip_temp &= 0x1FF;
 	if (trip_temp) {
-		ptd->hot_temp = GET_WPT_TEMP(trip_temp);
-		ptd->hot_trip_id = *nr_trips;
+		ptd->trips[*nr_trips].temperature = GET_WPT_TEMP(trip_temp);
+		ptd->trips[*nr_trips].type = THERMAL_TRIP_HOT;
 		++(*nr_trips);
 	}
 
@@ -298,39 +282,6 @@ static int pch_thermal_get_temp(struct thermal_zone_device *tzd, int *temp)
 	return	ptd->ops->get_temp(ptd, temp);
 }
 
-static int pch_get_trip_type(struct thermal_zone_device *tzd, int trip,
-			     enum thermal_trip_type *type)
-{
-	struct pch_thermal_device *ptd = tzd->devdata;
-
-	if (ptd->crt_trip_id == trip)
-		*type = THERMAL_TRIP_CRITICAL;
-	else if (ptd->hot_trip_id == trip)
-		*type = THERMAL_TRIP_HOT;
-	else if (ptd->psv_trip_id == trip)
-		*type = THERMAL_TRIP_PASSIVE;
-	else
-		return -EINVAL;
-
-	return 0;
-}
-
-static int pch_get_trip_temp(struct thermal_zone_device *tzd, int trip, int *temp)
-{
-	struct pch_thermal_device *ptd = tzd->devdata;
-
-	if (ptd->crt_trip_id == trip)
-		*temp = ptd->crt_temp;
-	else if (ptd->hot_trip_id == trip)
-		*temp = ptd->hot_temp;
-	else if (ptd->psv_trip_id == trip)
-		*temp = ptd->psv_temp;
-	else
-		return -EINVAL;
-
-	return 0;
-}
-
 static void pch_critical(struct thermal_zone_device *tzd)
 {
 	dev_dbg(&tzd->device, "%s: critical temperature reached\n", tzd->type);
@@ -338,8 +289,6 @@ static void pch_critical(struct thermal_zone_device *tzd)
 
 static struct thermal_zone_device_ops tzd_ops = {
 	.get_temp = pch_thermal_get_temp,
-	.get_trip_type = pch_get_trip_type,
-	.get_trip_temp = pch_get_trip_temp,
 	.critical = pch_critical,
 };
 
@@ -423,8 +372,9 @@ static int intel_pch_thermal_probe(struct pci_dev *pdev,
 	if (err)
 		goto error_cleanup;
 
-	ptd->tzd = thermal_zone_device_register(bi->name, nr_trips, 0, ptd,
-						&tzd_ops, NULL, 0, 0);
+	ptd->tzd = thermal_zone_device_register_with_trips(bi->name, ptd->trips,
+							   nr_trips, 0, ptd,
+							   &tzd_ops, NULL, 0, 0);
 	if (IS_ERR(ptd->tzd)) {
 		dev_err(&pdev->dev, "Failed to register thermal zone %s\n",
 			bi->name);
-- 
2.34.1