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input: qcom-hv-haptics: update drive waveform data format

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Use 2's complement data format for driving pattern waveform because
the pattern/FIFO samples used in the driver are all having unsigned
data type.

Change-Id: Ib0f7c1c7fe272068177237821debbd3cc1ad4ec8
Signed-off-by: Fenglin Wu <fenglinw@codeaurora.org>
This commit is contained in:
Fenglin Wu 2020-05-26 15:08:46 +08:00
commit 327de86822
1 changed files with 7 additions and 0 deletions
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7
drivers/input/misc/qcom-hv-haptics.c
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@ -58,6 +58,7 @@
#define DEFAULT_VMAX_MV 5000
#define HAP_CFG_DRV_WF_SEL_REG 0x49
#define DRV_WF_FMT_BIT BIT(4)
#define DRV_WF_SEL_MASK GENMASK(1, 0)
#define HAP_CFG_AUTO_SHUTDOWN_CFG_REG 0x4A
@ -1881,6 +1882,12 @@ static int haptics_hw_init(struct haptics_chip *chip)
if (rc < 0)
return rc;
/* Config to use 2's complement values for sample data */
rc = haptics_masked_write(chip, chip->cfg_addr_base,
HAP_CFG_DRV_WF_SEL_REG, DRV_WF_FMT_BIT, 0);
if (rc < 0)
return rc;
/* preload effect */
if (config->preload_effect != -EINVAL) {
for (i = 0; i < chip->effects_count; i++)