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Subject[PATCH 1/3] iio: imu: mpu6050: add support for 6515 variant
Date
This patch adds support for the MPU 6515 variant. Confirmed that the
driver functions correctly on a LG Nexus 5 (hammerhead) phone.

Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
---
This is a variation of Jonathan Marek's patch from postmarketOS
https://gitlab.com/postmarketOS/linux-postmarketos/commit/b8ad1ec1859c8bbcbce94944b3f4dd68f8f9fc37
with the following changes:

- The driver was previously throwing a 'whoami mismatch got XXX' error.
Corrected ordering of hw_info variable to match the index of the
inv_devices enum. The mpu6515 needed to come after mpu6500, not
mpu6050.
- Removed regulator code. See next patch in this series.

I got confirmation from Jonathan M. that it was ok for me to submit his
patch upstream with these changes.

Jonathan C.: I assume that it is ok for the device tree binding
documentation to go through IIO? If not, I can split this out into a
separate patch if needed.

Documentation/devicetree/bindings/iio/imu/inv_mpu6050.txt | 1 +
drivers/iio/imu/inv_mpu6050/inv_mpu_core.c | 6 ++++++
drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c | 5 +++++
drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h | 2 ++
4 files changed, 14 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/imu/inv_mpu6050.txt b/Documentation/devicetree/bindings/iio/imu/inv_mpu6050.txt
index 5f4777e8cc9e..b7def51c8ad9 100644
--- a/Documentation/devicetree/bindings/iio/imu/inv_mpu6050.txt
+++ b/Documentation/devicetree/bindings/iio/imu/inv_mpu6050.txt
@@ -6,6 +6,7 @@ Required properties:
- compatible : should be one of
"invensense,mpu6050"
"invensense,mpu6500"
+ "invensense,mpu6515"
"invensense,mpu9150"
"invensense,mpu9250"
"invensense,mpu9255"
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
index de68e83fc52d..12c1b9507007 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
@@ -103,6 +103,12 @@ static const struct inv_mpu6050_hw hw_info[] = {
.reg = &reg_set_6500,
.config = &chip_config_6050,
},
+ {
+ .whoami = INV_MPU6515_WHOAMI_VALUE,
+ .name = "MPU6515",
+ .reg = &reg_set_6500,
+ .config = &chip_config_6050,
+ },
{
.whoami = INV_MPU6000_WHOAMI_VALUE,
.name = "MPU6000",
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c
index 495409d56207..dd758e3d403d 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c
@@ -174,6 +174,7 @@ static int inv_mpu_remove(struct i2c_client *client)
static const struct i2c_device_id inv_mpu_id[] = {
{"mpu6050", INV_MPU6050},
{"mpu6500", INV_MPU6500},
+ {"mpu6515", INV_MPU6515},
{"mpu9150", INV_MPU9150},
{"mpu9250", INV_MPU9250},
{"mpu9255", INV_MPU9255},
@@ -192,6 +193,10 @@ static const struct of_device_id inv_of_match[] = {
.compatible = "invensense,mpu6500",
.data = (void *)INV_MPU6500
},
+ {
+ .compatible = "invensense,mpu6515",
+ .data = (void *)INV_MPU6515
+ },
{
.compatible = "invensense,mpu9150",
.data = (void *)INV_MPU9150
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h b/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h
index de8391693e17..e69a59659dbc 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h
@@ -71,6 +71,7 @@ struct inv_mpu6050_reg_map {
enum inv_devices {
INV_MPU6050,
INV_MPU6500,
+ INV_MPU6515,
INV_MPU6000,
INV_MPU9150,
INV_MPU9250,
@@ -256,6 +257,7 @@ struct inv_mpu6050_state {
#define INV_MPU9150_WHOAMI_VALUE 0x68
#define INV_MPU9250_WHOAMI_VALUE 0x71
#define INV_MPU9255_WHOAMI_VALUE 0x73
+#define INV_MPU6515_WHOAMI_VALUE 0x74
#define INV_ICM20608_WHOAMI_VALUE 0xAF

/* scan element definition */
--
2.17.1
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