sensor: bmg160: Convert to DTS

Convert bmg160 sensor driver and sample app to utilize device tree.

Introduce a dts board overlay on the frdm_k64f board to ensure we at
least have a single platform in which the sample gets built.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>

drivers/sensor/bmg160/Kconfig

@@ -11,25 +11,6 @@ menuconfig BMG160
 
 if BMG160
 
-config BMG160_DRV_NAME
-	string "Driver's name"
-	default "bmg160"
-	help
-	  Name for the BMG160 driver which will be used for binding.
-
-config BMG160_I2C_PORT_NAME
-	string "I2C master controller port name"
-	default "I2C_0"
-	help
-	  Master I2C port name through which BMG160 chip is accessed.
-
-config BMG160_I2C_ADDR
-	hex "BMG160 I2C address"
-	default 0x68
-	help
-	  BMG160 chip's I2C address. Chip supports two addresses: 0x68 and 0x69 (if
-	  SDO pin is pulled to GND).
-
 choice
 	prompt "BMG160 I2C bus speed"
 	default BMG160_I2C_SPEED_STANDARD
@@ -80,20 +61,6 @@ config BMG160_THREAD_STACK_SIZE
 	help
 	  The thread stack size.
 
-config BMG160_GPIO_PORT_NAME
-	string "GPIO controller port name"
-	depends on BMG160_TRIGGER
-	default "GPIO_0"
-	help
-	  The gpio controller the interrupt pin is attached to.
-
-config BMG160_INT_PIN
-	hex "BMG160 INT PIN"
-	depends on BMG160_TRIGGER
-	default 2
-	help
-	  BMG160 interrupt pin.
-
 choice
 	prompt "Gyroscope range setting."
 	default BMG160_RANGE_RUNTIME

drivers/sensor/bmg160/bmg160.c

@@ -328,15 +328,16 @@ int bmg160_init(struct device *dev)
 }
 
 const struct bmg160_device_config bmg160_config = {
-	.i2c_port = CONFIG_BMG160_I2C_PORT_NAME,
+	.i2c_port = DT_INST_0_BOSCH_BMG160_BUS_NAME,
-	.i2c_addr = CONFIG_BMG160_I2C_ADDR,
+	.i2c_addr = DT_INST_0_BOSCH_BMG160_BASE_ADDRESS,
 	.i2c_speed = BMG160_BUS_SPEED,
 #ifdef CONFIG_BMG160_TRIGGER
-	.gpio_port = CONFIG_BMG160_GPIO_PORT_NAME,
+	.gpio_port = DT_INST_0_BOSCH_BMG160_INT_GPIOS_CONTROLLER,
-	.int_pin = CONFIG_BMG160_INT_PIN,
+	.int_pin = DT_INST_0_BOSCH_BMG160_INT_GPIOS_PIN,
 #endif
 };
 
-DEVICE_AND_API_INIT(bmg160, CONFIG_BMG160_DRV_NAME, bmg160_init, &bmg160_data,
+DEVICE_AND_API_INIT(bmg160, DT_INST_0_BOSCH_BMG160_LABEL, bmg160_init,
+		    &bmg160_data,
 		    &bmg160_config, POST_KERNEL, CONFIG_SENSOR_INIT_PRIORITY,
 		    &bmg160_api);

dts/bindings/sensor/bosch,bmg160.yaml

@@ -0,0 +1,17 @@
+# Copyright (c) 2019, Linaro Limited
+# SPDX-License-Identifier: Apache-2.0
+
+title: Bosch BMG160 gyroscope
+
+description: |
+    Bosch BMG160 gyroscope.  See more info at:
+    https://www.bosch-sensortec.com/bst/products/all_products/bmg160
+
+compatible: "bosch,bmg160"
+
+include: i2c-device.yaml
+
+properties:
+    int-gpios:
+      type: phandle-array
+      required: false

samples/sensor/bmg160/boards/frdm_k64f.overlay

@@ -0,0 +1,14 @@
+/*
+ * Copyright (c) 2019, Linaro Ltd.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&i2c0 {
+	bmg160@68 {
+		compatible = "bosch,bmg160";
+		reg = <0x68>;
+		int-gpios = <&gpioc 6 0>;
+		label = "BMG160";
+	};
+};

samples/sensor/bmg160/sample.yaml

@@ -5,3 +5,4 @@ tests:
     harness: sensor
     tags: sensors
     depends_on: i2c gpio
+    filter: dt_compat_enabled("bosch,bmg160")

tests/drivers/build_all/dts_fixup.h

@@ -381,6 +381,15 @@
 #define DT_INST_0_BOSCH_BMM150_BUS_NAME ""
 #endif
 
+#ifndef DT_INST_0_BOSCH_BMG160_LABEL
+#define DT_INST_0_BOSCH_BMG160_LABEL ""
+#define DT_INST_0_BOSCH_BMG160_BASE_ADDRESS 0
+#define DT_INST_0_BOSCH_BMG160_BUS_NAME ""
+#define DT_INST_0_BOSCH_BMG160_INT_GPIOS_CONTROLLER ""
+#define DT_INST_0_BOSCH_BMG160_INT_GPIOS_FLAGS 0
+#define DT_INST_0_BOSCH_BMG160_INT_GPIOS_PIN 0
+#endif
+
 #endif /* CONFIG_HAS_DTS_I2C */
 
 #ifndef DT_ADXL372_DEV_NAME