sensor: ina230: optional current and power inversion

Add a devicetree property to invert the direction of reported power and
current flow, if needed to match the convention of some subsystem.

Signed-off-by: Jordan Yates <jordan@embeint.com>

Author: JordanYates

drivers/sensor/ti/ina23x/ina230.c

@@ -289,7 +289,8 @@ static DEVICE_API(sensor, ina230_driver_api) = {
 	static struct ina230_data drv_data_##type##inst;                                           \
 	static const struct ina230_config drv_config_##type##inst = {                              \
 		.bus = I2C_DT_SPEC_INST_GET(inst),                                                 \
-		.current_lsb = DT_INST_PROP(inst, current_lsb_microamps),                          \
+		.current_lsb = DT_INST_PROP(inst, current_lsb_microamps) *                         \
+			       COND_CODE_1(DT_INST_PROP(inst, direction_invert), (-1), (1)),       \
 		.uv_lsb = type##_BUS_VOLTAGE_UV_LSB,                                               \
 		.conv_duration_us = CONV_DURATION_US(inst),                                        \
 		.config = (DT_INST_PROP_OR(inst, high_precision, 0) << 12) |                       \

drivers/sensor/ti/ina23x/ina230.h

@@ -52,7 +52,7 @@ struct ina230_data {
 
 struct ina230_config {
 	struct i2c_dt_spec bus;
-	uint32_t current_lsb;
+	int32_t current_lsb;
 	uint32_t uv_lsb;
 	uint32_t conv_duration_us;
 	uint16_t config;

dts/bindings/sensor/ti,ina230.yaml

@@ -71,3 +71,7 @@ properties:
     default: 0
     # default alert limit is 0V
     description: Alert register, default matches the power-on reset value
+
+  direction-invert:
+    type: boolean
+    description: Invert the direction of reported current and power flow