linux-kernel - [PATCH v4 08/30] thermal/drivers/exynos: Use generic thermal_zone_get

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Date:   Wed, 21 Sep 2022 11:42:21 +0200
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     daniel.lezcano@...aro.org, rafael@...nel.org
Cc:     linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        rui.zhang@...el.com,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
        Amit Kucheria <amitk@...nel.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        linux-samsung-soc@...r.kernel.org (open list:SAMSUNG THERMAL DRIVER),
        linux-arm-kernel@...ts.infradead.org (moderated list:ARM/SAMSUNG S3C,
        S5P AND EXYNOS ARM ARCHITECTURES)
Subject: [PATCH v4 08/30] thermal/drivers/exynos: Use generic thermal_zone_get_trip() function

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@...aro.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 drivers/thermal/samsung/exynos_tmu.c | 41 +++++++++++-----------------
 1 file changed, 16 insertions(+), 25 deletions(-)

diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
index 51874d0a284c..0e33d32a9d2e 100644
--- a/drivers/thermal/samsung/exynos_tmu.c
+++ b/drivers/thermal/samsung/exynos_tmu.c
@@ -260,16 +260,8 @@ static int exynos_tmu_initialize(struct platform_device *pdev)
 {
 	struct exynos_tmu_data *data = platform_get_drvdata(pdev);
 	struct thermal_zone_device *tzd = data->tzd;
-	const struct thermal_trip * const trips =
-		of_thermal_get_trip_points(tzd);
 	unsigned int status;
-	int ret = 0, temp, hyst;
-
-	if (!trips) {
-		dev_err(&pdev->dev,
-			"Cannot get trip points from device tree!\n");
-		return -ENODEV;
-	}
+	int ret = 0, temp;
 
 	if (data->soc != SOC_ARCH_EXYNOS5433) /* FIXME */
 		ret = tzd->ops->get_crit_temp(tzd, &temp);
@@ -303,19 +295,16 @@ static int exynos_tmu_initialize(struct platform_device *pdev)
 
 		/* Write temperature code for rising and falling threshold */
 		for (i = 0; i < ntrips; i++) {
-			/* Write temperature code for rising threshold */
-			ret = tzd->ops->get_trip_temp(tzd, i, &temp);
-			if (ret)
-				goto err;
-			temp /= MCELSIUS;
-			data->tmu_set_trip_temp(data, i, temp);
 
-			/* Write temperature code for falling threshold */
-			ret = tzd->ops->get_trip_hyst(tzd, i, &hyst);
+			struct thermal_trip trip;
+			
+			ret = thermal_zone_get_trip(tzd, i, &trip);
 			if (ret)
 				goto err;
-			hyst /= MCELSIUS;
-			data->tmu_set_trip_hyst(data, i, temp, hyst);
+
+			data->tmu_set_trip_temp(data, i, trip.temperature / MCELSIUS);
+			data->tmu_set_trip_hyst(data, i, trip.temperature / MCELSIUS,
+						trip.hysteresis / MCELSIUS);
 		}
 
 		data->tmu_clear_irqs(data);
@@ -360,21 +349,23 @@ static void exynos_tmu_control(struct platform_device *pdev, bool on)
 }
 
 static void exynos4210_tmu_set_trip_temp(struct exynos_tmu_data *data,
-					 int trip, u8 temp)
+					 int trip_id, u8 temp)
 {
-	const struct thermal_trip * const trips =
-		of_thermal_get_trip_points(data->tzd);
+	struct thermal_trip trip;
 	u8 ref, th_code;
 
-	ref = trips[0].temperature / MCELSIUS;
+	if (thermal_zone_get_trip(data->tzd, 0, &trip))
+		return;
 
-	if (trip == 0) {
+	ref = trip.temperature / MCELSIUS;
+	
+	if (trip_id == 0) {
 		th_code = temp_to_code(data, ref);
 		writeb(th_code, data->base + EXYNOS4210_TMU_REG_THRESHOLD_TEMP);
 	}
 
 	temp -= ref;
-	writeb(temp, data->base + EXYNOS4210_TMU_REG_TRIG_LEVEL0 + trip * 4);
+	writeb(temp, data->base + EXYNOS4210_TMU_REG_TRIG_LEVEL0 + trip_id * 4);
 }
 
 /* failing thresholds are not supported on Exynos4210 */
-- 
2.34.1