Added support for the mpu9255 IMU to the mpu6050 driver. The
register map is the same as the other chips; the only driver
difference is the compatible string and the WHOAMI register
value.
Signed-off-by: Douglas Fischer <fischerdouglasc@xxxxxxxxx>
---
diff -uprN linux-4.16.orig/Documentation/devicetree/bindings/iio/imu/inv_mpu6050.txt linux-4.16/Documentation/devicetree/bindings/iio/imu/inv_mpu6050.txt
--- linux-4.16.orig/Documentation/devicetree/bindings/iio/imu/inv_mpu6050.txt 2018-04-01 17:20:27.000000000 -0400
+++ linux-4.16/Documentation/devicetree/bindings/iio/imu/inv_mpu6050.txt 2018-04-02 18:31:38.342464417 -0400
@@ -8,6 +8,7 @@ Required properties:
"invensense,mpu6500"
"invensense,mpu9150"
"invensense,mpu9250"
+ "invensense,mpu9255"
"invensense,icm20608"
- reg : the I2C address of the sensor
- interrupt-parent : should be the phandle for the interrupt controller
diff -uprN linux-4.16.orig/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c linux-4.16/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
--- linux-4.16.orig/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c 2018-04-01 17:20:27.000000000 -0400
+++ linux-4.16/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c 2018-04-02 18:31:38.345464417 -0400
@@ -121,6 +121,12 @@ static const struct inv_mpu6050_hw hw_in
.config = &chip_config_6050,
},
{
+ .whoami = INV_MPU9255_WHOAMI_VALUE,
+ .name = "MPU9255",
+ .reg = ®_set_6500,
+ .config = &chip_config_6050,
+ },
+ {
.whoami = INV_ICM20608_WHOAMI_VALUE,
.name = "ICM20608",
.reg = ®_set_6500,
diff -uprN linux-4.16.orig/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c linux-4.16/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c
--- linux-4.16.orig/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c 2018-04-01 17:20:27.000000000 -0400
+++ linux-4.16/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c 2018-04-02 18:31:38.348464417 -0400
@@ -179,6 +179,7 @@ static const struct i2c_device_id inv_mp
{"mpu6500", INV_MPU6500},
{"mpu9150", INV_MPU9150},
{"mpu9250", INV_MPU9250},
+ {"mpu9255", INV_MPU9255},
{"icm20608", INV_ICM20608},
{}
};
@@ -203,6 +204,10 @@ static const struct of_device_id inv_of_
.data = (void *)INV_MPU9250
},
{
+ .compatible = "invensense,mpu9255",
+ .data = (void *)INV_MPU9255
+ },
+ {
.compatible = "invensense,icm20608",
.data = (void *)INV_ICM20608
},
diff -uprN linux-4.16.orig/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h linux-4.16/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h
--- linux-4.16.orig/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h 2018-04-01 17:20:27.000000000 -0400
+++ linux-4.16/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h 2018-04-02 18:31:38.351464416 -0400
@@ -74,6 +74,7 @@ enum inv_devices {
INV_MPU6000,
INV_MPU9150,
INV_MPU9250,
+ INV_MPU9255,
INV_ICM20608,
INV_NUM_PARTS
};
@@ -232,6 +233,7 @@ struct inv_mpu6050_state {
#define INV_MPU6500_WHOAMI_VALUE 0x70
#define INV_MPU9150_WHOAMI_VALUE 0x68
#define INV_MPU9250_WHOAMI_VALUE 0x71
+#define INV_MPU9255_WHOAMI_VALUE 0x73
#define INV_ICM20608_WHOAMI_VALUE 0xAF
/* scan element definition */
diff -uprN linux-4.16.orig/drivers/iio/imu/inv_mpu6050/inv_mpu_spi.c linux-4.16/drivers/iio/imu/inv_mpu6050/inv_mpu_spi.c
--- linux-4.16.orig/drivers/iio/imu/inv_mpu6050/inv_mpu_spi.c 2018-04-01 17:20:27.000000000 -0400
+++ linux-4.16/drivers/iio/imu/inv_mpu6050/inv_mpu_spi.c 2018-04-02 18:31:38.356464416 -0400
@@ -83,6 +83,7 @@ static const struct spi_device_id inv_mp
{"mpu6500", INV_MPU6500},
{"mpu9150", INV_MPU9150},
{"mpu9250", INV_MPU9250},
+ {"mpu9255", INV_MPU9255},
{"icm20608", INV_ICM20608},
{}
};
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