5.4-stable review patch. If anyone has any objections, please let me know.
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From: Fenglin Wu quic_fenglinw@quicinc.com
[ Upstream commit 48c0687a322d54ac7e7a685c0b6db78d78f593af ]
The output voltage is inclusive hence the max level calculation is off-by-one-step. Correct it.
iWhile we are at it also add a define for the step size instead of using the magic value.
Fixes: 11205bb63e5c ("Input: add support for pm8xxx based vibrator driver") Signed-off-by: Fenglin Wu quic_fenglinw@quicinc.com Reviewed-by: Dmitry Baryshkov dmitry.baryshkov@linaro.org Link: https://lore.kernel.org/r/20240412-pm8xxx-vibrator-new-design-v10-1-0ec0ad13... Signed-off-by: Dmitry Torokhov dmitry.torokhov@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/input/misc/pm8xxx-vibrator.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/input/misc/pm8xxx-vibrator.c b/drivers/input/misc/pm8xxx-vibrator.c index 53ad25eaf1a28..8bfe5c7b1244c 100644 --- a/drivers/input/misc/pm8xxx-vibrator.c +++ b/drivers/input/misc/pm8xxx-vibrator.c @@ -14,7 +14,8 @@
#define VIB_MAX_LEVEL_mV (3100) #define VIB_MIN_LEVEL_mV (1200) -#define VIB_MAX_LEVELS (VIB_MAX_LEVEL_mV - VIB_MIN_LEVEL_mV) +#define VIB_PER_STEP_mV (100) +#define VIB_MAX_LEVELS (VIB_MAX_LEVEL_mV - VIB_MIN_LEVEL_mV + VIB_PER_STEP_mV)
#define MAX_FF_SPEED 0xff
@@ -118,10 +119,10 @@ static void pm8xxx_work_handler(struct work_struct *work) vib->active = true; vib->level = ((VIB_MAX_LEVELS * vib->speed) / MAX_FF_SPEED) + VIB_MIN_LEVEL_mV; - vib->level /= 100; + vib->level /= VIB_PER_STEP_mV; } else { vib->active = false; - vib->level = VIB_MIN_LEVEL_mV / 100; + vib->level = VIB_MIN_LEVEL_mV / VIB_PER_STEP_mV; }
pm8xxx_vib_set(vib, vib->active);