Input: aw86927 - add driver for Awinic AW86927

Add support for the I2C-connected Awinic AW86927 LRA haptic driver.

This driver includes a hardcoded sine waveform to be uploaded to the
AW86927's SRAM for haptic playback.
This driver does not currently support all the capabilities of the
AW86927, such as F0 calibration, RTP mode, and CONT mode.

Signed-off-by: Griffin Kroah-Hartman <griffin.kroah@fairphone.com>
Link: https://lore.kernel.org/r/20250925-aw86927-v3-2-1fc6265b42de@fairphone.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Author: Griffin Kroah-Hartman

drivers/input/misc/Kconfig

@@ -126,6 +126,17 @@ config INPUT_ATMEL_CAPTOUCH
 	  To compile this driver as a module, choose M here: the
 	  module will be called atmel_captouch.
 
+config INPUT_AW86927
+	tristate "Awinic AW86927 Haptic Driver Support"
+	depends on I2C && INPUT
+	select INPUT_FF_MEMLESS
+	select REGMAP_I2C
+	help
+	  Say Y here if you have an Awinic AW86927 haptic chip.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called aw86927.
+
 config INPUT_BBNSM_PWRKEY
 	tristate "NXP BBNSM Power Key Driver"
 	depends on ARCH_MXC || COMPILE_TEST

drivers/input/misc/Makefile

@@ -22,6 +22,7 @@ obj-$(CONFIG_INPUT_ATC260X_ONKEY)	+= atc260x-onkey.o
 obj-$(CONFIG_INPUT_ATI_REMOTE2)		+= ati_remote2.o
 obj-$(CONFIG_INPUT_ATLAS_BTNS)		+= atlas_btns.o
 obj-$(CONFIG_INPUT_ATMEL_CAPTOUCH)	+= atmel_captouch.o
+obj-$(CONFIG_INPUT_AW86927)		+= aw86927.o
 obj-$(CONFIG_INPUT_BBNSM_PWRKEY)	+= nxp-bbnsm-pwrkey.o
 obj-$(CONFIG_INPUT_BMA150)		+= bma150.o
 obj-$(CONFIG_INPUT_CM109)		+= cm109.o