6.4-stable review patch. If anyone has any objections, please let me know.
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From: Nícolas F. R. A. Prado nfraprado@collabora.com
[ Upstream commit 487bf099e85b724c824f5fafaf93c6749c4d2120 ]
Out of the many interrupts supported by the hardware, the only ones of interest to the driver currently are: * The temperature went over the high offset threshold, for any of the sensors * The temperature went below the low offset threshold, for any of the sensors * The temperature went over the stage3 threshold
These are the only thresholds configured by the driver through the OFFSETH, OFFSETL, and PROTTC registers, respectively.
The current interrupt mask in LVTS_MONINT_CONF, enables many more interrupts, including data ready on sensors for both filtered and immediate mode. These are not only not handled by the driver, but they are also triggered too often, causing unneeded overhead. Disable these unnecessary interrupts.
The meaning of each bit can be seen in the comment describing LVTS_MONINTST in the IRQ handler.
Fixes: f5f633b18234 ("thermal/drivers/mediatek: Add the Low Voltage Thermal Sensor driver") Signed-off-by: Nícolas F. R. A. Prado nfraprado@collabora.com Reviewed-by: AngeloGioacchino Del Regno angelogioacchino.delregno@collabora.com Reviewed-by: Alexandre Mergnat amergnat@baylibre.com Signed-off-by: Daniel Lezcano daniel.lezcano@linaro.org Link: https://lore.kernel.org/r/20230706153823.201943-5-nfraprado@collabora.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/thermal/mediatek/lvts_thermal.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/thermal/mediatek/lvts_thermal.c b/drivers/thermal/mediatek/lvts_thermal.c index 80abd10596d85..0fa90ac6ed41f 100644 --- a/drivers/thermal/mediatek/lvts_thermal.c +++ b/drivers/thermal/mediatek/lvts_thermal.c @@ -63,7 +63,7 @@ #define LVTS_HW_FILTER 0x2 #define LVTS_TSSEL_CONF 0x13121110 #define LVTS_CALSCALE_CONF 0x300 -#define LVTS_MONINT_CONF 0x9FBF7BDE +#define LVTS_MONINT_CONF 0x8300318C
#define LVTS_INT_SENSOR0 0x0009001F #define LVTS_INT_SENSOR1 0x001203E0