drivers: haptics: drv2605: Pick up property defaults from DT

Adds the default value for the existing properties to the device tree
and fall back on those values at initialization if necessary.

Signed-off-by: Ricardo Rivera-Matos <[email protected]>

Author: rriveramcrus

drivers/haptics/drv2605.c

@@ -597,9 +597,9 @@ static const struct haptics_driver_api drv2605_driver_api = {
 		.i2c = I2C_DT_SPEC_INST_GET(inst),                                                 \
 		.en_gpio = GPIO_DT_SPEC_INST_GET_OR(inst, en_gpios, {}),                           \
 		.in_trig_gpio = GPIO_DT_SPEC_INST_GET_OR(inst, in_trig_gpios, {}),                 \
-		.feedback_brake_factor = DT_INST_ENUM_IDX_OR(inst, feedback_brake_factor, 3),      \
-		.loop_gain = DT_INST_ENUM_IDX_OR(inst, loop_gain, 2),                              \
-		.actuator_mode = DT_INST_ENUM_IDX_OR(inst, actuator_mode, 0),                      \
+		.feedback_brake_factor = DT_INST_ENUM_IDX(inst, feedback_brake_factor),            \
+		.loop_gain = DT_INST_ENUM_IDX(inst, loop_gain),                                    \
+		.actuator_mode = DT_INST_ENUM_IDX(inst, actuator_mode),                            \
 	};                                                                                         \
                                                                                                    \
 	static struct drv2605_data drv2605_data_##inst = {                                         \

dts/bindings/haptics/ti,drv2605.yaml

@@ -27,13 +27,22 @@ properties:
       - "8X"
       - "16X"
       - "DISABLED"
+    default: "3X"
+    description: |
+      Selects the feedback gain ratio between braking gain and driving gain.
+      According to the datasheet, a value of 2 ("3X") is valid for most
+      actuators.
   loop-gain:
     type: string
     enum:
       - "LOW"
       - "MEDIUM"
       - "HIGH"
       - "VERY_HIGH"
+    default: "HIGH"
+    description: |
+      Selects a loop gain for the feedback control. According to the datasheet,
+      a value of 2 ("HIGH") is valid for most actuators.
   en-gpios:
     type: phandle-array
     description: GPIO to enable and disable the device.