From 790d176623bd5fed8ade97bd6332324414cbbd5e Mon Sep 17 00:00:00 2001 From: Fenglin Wu Date: Tue, 10 May 2022 13:34:28 +0800 Subject: [PATCH] input: qcom-hv-haptics: update initial FIFO programming count Update initial FIFO programming count to 320 which can help to reduce vibration request latency. Change-Id: If0e12dd626dda66a0b296b9832562bbeaee57fd9 Signed-off-by: Fenglin Wu --- drivers/input/misc/qcom-hv-haptics.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/input/misc/qcom-hv-haptics.c b/drivers/input/misc/qcom-hv-haptics.c index 300a4eaeb1fc..57b929b27c03 100644 --- a/drivers/input/misc/qcom-hv-haptics.c +++ b/drivers/input/misc/qcom-hv-haptics.c @@ -329,6 +329,7 @@ /* below definitions are only for HAP525_HV */ #define MMAP_NUM_BYTES 2048 #define MMAP_FIFO_MIN_SIZE 640 +#define FIFO_PRGM_INIT_SIZE 320 #define is_between(val, min, max) \ (((min) <= (max)) && ((min) <= (val)) && ((val) <= (max))) @@ -1995,6 +1996,7 @@ static int haptics_set_fifo(struct haptics_chip *chip, struct fifo_cfg *fifo) return available; num = min_t(u32, available, num); + num = min_t(u32, num, FIFO_PRGM_INIT_SIZE); /* Keep the FIFO programming 4-byte aligned if FIFO refilling is needed */ if ((num < fifo->num_s) && (num % HAP_PTN_FIFO_DIN_NUM)) num = round_down(num, HAP_PTN_FIFO_DIN_NUM);