iio: imu: inv_mpu6050: add support of IAM20680

Automotive certified IMU, similar to ICM20608.
Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/imu/inv_mpu6050/Kconfig

@@ -16,7 +16,7 @@ config INV_MPU6050_I2C
 	select REGMAP_I2C
 	help
 	  This driver supports the Invensense MPU6050/9150,
-	  MPU6500/6515/9250/9255, ICM20608/20609/20689 and ICM20602
+	  MPU6500/6515/9250/9255, ICM20608/20609/20689, ICM20602 and IAM20680
 	  motion tracking devices over I2C.
 	  This driver can be built as a module. The module will be called
 	  inv-mpu6050-i2c.
@@ -28,7 +28,7 @@ config INV_MPU6050_SPI
 	select REGMAP_SPI
 	help
 	  This driver supports the Invensense MPU6000,
-	  MPU6500/6515/9250/9255, ICM20608/20609/20689 and ICM20602
+	  MPU6500/6515/9250/9255, ICM20608/20609/20689, ICM20602 and IAM20680
 	  motion tracking devices over SPI.
 	  This driver can be built as a module. The module will be called
 	  inv-mpu6050-spi.

drivers/iio/imu/inv_mpu6050/inv_mpu_core.c

@@ -200,6 +200,14 @@ static const struct inv_mpu6050_hw hw_info[] = {
 		.fifo_size = 1008,
 		.temp = {INV_ICM20608_TEMP_OFFSET, INV_ICM20608_TEMP_SCALE},
 	},
+	{
+		.whoami = INV_IAM20680_WHOAMI_VALUE,
+		.name = "IAM20680",
+		.reg = &reg_set_6500,
+		.config = &chip_config_6050,
+		.fifo_size = 512,
+		.temp = {INV_ICM20608_TEMP_OFFSET, INV_ICM20608_TEMP_SCALE},
+	},
 };
 
 int inv_mpu6050_switch_engine(struct inv_mpu6050_state *st, bool en, u32 mask)

drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c

@@ -64,6 +64,7 @@ static bool inv_mpu_i2c_aux_bus(struct device *dev)
 	case INV_ICM20609:
 	case INV_ICM20689:
 	case INV_ICM20602:
+	case INV_IAM20680:
 		/* no i2c auxiliary bus on the chip */
 		return false;
 	case INV_MPU9150:
@@ -207,6 +208,7 @@ static const struct i2c_device_id inv_mpu_id[] = {
 	{"icm20609", INV_ICM20609},
 	{"icm20689", INV_ICM20689},
 	{"icm20602", INV_ICM20602},
+	{"iam20680", INV_IAM20680},
 	{}
 };
 
@@ -253,6 +255,10 @@ static const struct of_device_id inv_of_match[] = {
 		.compatible = "invensense,icm20602",
 		.data = (void *)INV_ICM20602
 	},
+	{
+		.compatible = "invensense,iam20680",
+		.data = (void *)INV_IAM20680
+	},
 	{ }
 };
 MODULE_DEVICE_TABLE(of, inv_of_match);

drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h

@@ -78,6 +78,7 @@ enum inv_devices {
 	INV_ICM20609,
 	INV_ICM20689,
 	INV_ICM20602,
+	INV_IAM20680,
 	INV_NUM_PARTS
 };
 
@@ -346,6 +347,7 @@ struct inv_mpu6050_state {
 #define INV_ICM20609_WHOAMI_VALUE		0xA6
 #define INV_ICM20689_WHOAMI_VALUE		0x98
 #define INV_ICM20602_WHOAMI_VALUE		0x12
+#define INV_IAM20680_WHOAMI_VALUE		0xA9
 
 /* scan element definition for generic MPU6xxx devices */
 enum inv_mpu6050_scan {

drivers/iio/imu/inv_mpu6050/inv_mpu_spi.c

@@ -84,6 +84,7 @@ static const struct spi_device_id inv_mpu_id[] = {
 	{"icm20609", INV_ICM20609},
 	{"icm20689", INV_ICM20689},
 	{"icm20602", INV_ICM20602},
+	{"iam20680", INV_IAM20680},
 	{}
 };
 
@@ -126,6 +127,10 @@ static const struct of_device_id inv_of_match[] = {
 		.compatible = "invensense,icm20602",
 		.data = (void *)INV_ICM20602
 	},
+	{
+		.compatible = "invensense,iam20680",
+		.data = (void *)INV_IAM20680
+	},
 	{ }
 };
 MODULE_DEVICE_TABLE(of, inv_of_match);