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Message-ID: <20230829091853.626011-9-m.majewski2@samsung.com>
Date: Tue, 29 Aug 2023 11:18:46 +0200
From: Mateusz Majewski <m.majewski2@...sung.com>
To: devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-pm@...r.kernel.org
Cc: Mateusz Majewski <m.majewski2@...sung.com>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Alim Akhtar <alim.akhtar@...sung.com>,
Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
"Rafael J. Wysocki" <rafael@...nel.org>,
Daniel Lezcano <daniel.lezcano@...aro.org>,
Amit Kucheria <amitk@...nel.org>,
Zhang Rui <rui.zhang@...el.com>,
Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>,
Marek Szyprowski <m.szyprowski@...sung.com>
Subject: [PATCH 08/11] thermal: exynos: stop using the threshold mechanism
on Exynos 4210
Exynos 4210 supports setting a base threshold value, which is added to
all trip points. This might be useful, but is not really necessary in
our usecase, so we always set it to 0 to simplify the code a bit.
Additionally, this change makes it so that we convert the value to the
calibrated one in a slightly different place. This is more correct
morally, though it does not make any change when single-point
calibration is being used (which is the case currently).
Signed-off-by: Mateusz Majewski <m.majewski2@...sung.com>
---
drivers/thermal/samsung/exynos_tmu.c | 17 +++--------------
1 file changed, 3 insertions(+), 14 deletions(-)
diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
index 5da44f43715d..6c107fe9fd27 100644
--- a/drivers/thermal/samsung/exynos_tmu.c
+++ b/drivers/thermal/samsung/exynos_tmu.c
@@ -336,20 +336,7 @@ 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_id, u8 temp)
{
- struct thermal_trip trip;
- u8 ref, th_code;
-
- if (thermal_zone_get_trip(data->tzd, 0, &trip))
- return;
-
- 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;
+ temp = temp_to_code(data, temp);
writeb(temp, data->base + EXYNOS4210_TMU_REG_TRIG_LEVEL0 + trip_id * 4);
}
@@ -364,6 +351,8 @@ static void exynos4210_tmu_initialize(struct platform_device *pdev)
struct exynos_tmu_data *data = platform_get_drvdata(pdev);
sanitize_temp_error(data, readl(data->base + EXYNOS_TMU_REG_TRIMINFO));
+
+ writeb(0, data->base + EXYNOS4210_TMU_REG_THRESHOLD_TEMP);
}
static void exynos4412_tmu_set_trip_temp(struct exynos_tmu_data *data,
--
2.41.0
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