iio:imu:mpu6050: icm20608 initial support

Introduce support for Invense ICM20608 IMU, a 6-axis motion tracking device
that combines a 3-axis gyroscope and a 3-axis accelerometer:
http://www.invensense.com/products/motion-tracking/6-axis/icm-20608-2

Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

5 files changed, 14 insertions, 4 deletions

diff --git a/drivers/iio/imu/inv_mpu6050/Kconfig b/drivers/iio/imu/inv_mpu6050/Kconfig
index f756feecfa4c..5483b2ea754d 100644
--- a/drivers/iio/imu/inv_mpu6050/Kconfig
+++ b/drivers/iio/imu/inv_mpu6050/Kconfig
@@ -13,8 +13,8 @@ config INV_MPU6050_I2C
         select INV_MPU6050_IIO
         select REGMAP_I2C
         help
-          This driver supports the Invensense MPU6050/6500/9150 motion tracking
-          devices over I2C.
+          This driver supports the Invensense MPU6050/6500/9150 and ICM20608
+          motion tracking devices over I2C.
           This driver can be built as a module. The module will be called
           inv-mpu6050-i2c.
 
@@ -24,7 +24,7 @@ config INV_MPU6050_SPI
         select INV_MPU6050_IIO
         select REGMAP_SPI
         help
-          This driver supports the Invensense MPU6000/6500/9150 motion tracking
-          devices over SPI.
+          This driver supports the Invensense MPU6050/6500/9150 and ICM20608
+          motion tracking devices over SPI.
           This driver can be built as a module. The module will be called
           inv-mpu6050-spi.
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
index ee40dae5ab58..b9fcbf18aa99 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
@@ -113,6 +113,12 @@ static const struct inv_mpu6050_hw hw_info[] = {
                 .reg = &reg_set_6050,
                 .config = &chip_config_6050,
         },
+        {
+                .whoami = INV_ICM20608_WHOAMI_VALUE,
+                .name = "ICM20608",
+                .reg = &reg_set_6500,
+                .config = &chip_config_6050,
+        },
 };
 
 int inv_mpu6050_switch_engine(struct inv_mpu6050_state *st, bool en, u32 mask)
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c
index e1fd7fa53e3b..19580d1db597 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c
@@ -170,6 +170,7 @@ static const struct i2c_device_id inv_mpu_id[] = {
         {"mpu6050", INV_MPU6050},
         {"mpu6500", INV_MPU6500},
         {"mpu9150", INV_MPU9150},
+        {"icm20608", INV_ICM20608},
         {}
 };
 
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h b/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h
index 3bf8544ccc9f..f0e8c5dd9fae 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h
@@ -70,6 +70,7 @@ enum inv_devices {
         INV_MPU6500,
         INV_MPU6000,
         INV_MPU9150,
+        INV_ICM20608,
         INV_NUM_PARTS
 };
 
@@ -225,6 +226,7 @@ struct inv_mpu6050_state {
 #define INV_MPU6050_WHOAMI_VALUE                0x68
 #define INV_MPU6500_WHOAMI_VALUE                0x70
 #define INV_MPU9150_WHOAMI_VALUE                0x68
+#define INV_ICM20608_WHOAMI_VALUE               0xAF
 
 /* scan element definition */
 enum inv_mpu6050_scan {
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_spi.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_spi.c
index 190a4a51c830..6e6476dfa188 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_spi.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_spi.c
@@ -82,6 +82,7 @@ static const struct spi_device_id inv_mpu_id[] = {
         {"mpu6000", INV_MPU6000},
         {"mpu6500", INV_MPU6500},
         {"mpu9150", INV_MPU9150},
+        {"icm20608", INV_ICM20608},
         {}
 };