| Message ID | 1395248203-17027-1-git-send-email-srinivas.pandruvada@linux.intel.com (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
On 19/03/14 16:56, Srinivas Pandruvada wrote: > Adding MPU6500 in target list for this driver. > > Description: > Source > Document: MPU-6500 Register Map and Descriptions Revision 2.1 > Section 3: Register Map > > This section describes difference in terms device programmability > bewteen MPU6050 and MPU6500. > These are different registers, which differs between MPU6050 and > MPU6500. > > Addr Name > --------------------- > 1E LP_ACCEL_ODR > 6C PWR_MGMT_2 > 77 XA_OFFSET_H > 78 XA_OFFSET_L > 7A YA_OFFSET_H > 7B YA_OFFSET_L > 7D ZA_OFFSET_H > 7E ZA_OFFSET_L > > But the current MPU6050 driver doesn't use registers which are different > except PWR_MGMT_2. The difference is support of "LP_WAKE_CTRL" at bit6-7 > in MPU6050 mode. In MPU6500 they are not defined. > In current mpu6050 driver, only values used for this register are for > standby mode for gyro and accelerometer. > In both case frequency of wakeups is set to default and not using > bit 6-7. > > So this driver van as well support MPU6500. In addition MPU6500 can > run MPU6050 mode by changing device trim settings. > > So changing config comments to allow MPU6500 to use this driver. > When ths driver is enhanced to support more functions, i2c driver > data INV_MPU6500 or "WHO_AM_I" register can be used to add additional > functionality. > > Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Applied to the togreg branch of iio.git - initially pushed out as the testing branch. Thanks, Jonathan > --- > drivers/iio/imu/inv_mpu6050/Kconfig | 2 ++ > drivers/iio/imu/inv_mpu6050/inv_mpu_core.c | 1 + > drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h | 1 + > 3 files changed, 4 insertions(+) > > diff --git a/drivers/iio/imu/inv_mpu6050/Kconfig b/drivers/iio/imu/inv_mpu6050/Kconfig > index 361b232..2d0608b 100644 > --- a/drivers/iio/imu/inv_mpu6050/Kconfig > +++ b/drivers/iio/imu/inv_mpu6050/Kconfig > @@ -9,6 +9,8 @@ config INV_MPU6050_IIO > select IIO_TRIGGERED_BUFFER > help > This driver supports the Invensense MPU6050 devices. > + This driver can also support MPU6500 in MPU6050 compatibility mode > + and also in MPU6500 mode with some limitations. > It is a gyroscope/accelerometer combo device. > This driver can be built as a module. The module will be called > inv-mpu6050. > diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c > index df7f1e1..52d688b 100644 > --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c > +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c > @@ -765,6 +765,7 @@ static SIMPLE_DEV_PM_OPS(inv_mpu_pmops, inv_mpu_suspend, inv_mpu_resume); > */ > static const struct i2c_device_id inv_mpu_id[] = { > {"mpu6050", INV_MPU6050}, > + {"mpu6500", INV_MPU6500}, > {} > }; > > diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h b/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h > index f383955..4ddfd03 100644 > --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h > +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h > @@ -59,6 +59,7 @@ struct inv_mpu6050_reg_map { > /*device enum */ > enum inv_devices { > INV_MPU6050, > + INV_MPU6500, > INV_NUM_PARTS > }; > > -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/iio/imu/inv_mpu6050/Kconfig b/drivers/iio/imu/inv_mpu6050/Kconfig index 361b232..2d0608b 100644 --- a/drivers/iio/imu/inv_mpu6050/Kconfig +++ b/drivers/iio/imu/inv_mpu6050/Kconfig @@ -9,6 +9,8 @@ config INV_MPU6050_IIO select IIO_TRIGGERED_BUFFER help This driver supports the Invensense MPU6050 devices. + This driver can also support MPU6500 in MPU6050 compatibility mode + and also in MPU6500 mode with some limitations. It is a gyroscope/accelerometer combo device. This driver can be built as a module. The module will be called inv-mpu6050. diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c index df7f1e1..52d688b 100644 --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c @@ -765,6 +765,7 @@ static SIMPLE_DEV_PM_OPS(inv_mpu_pmops, inv_mpu_suspend, inv_mpu_resume); */ static const struct i2c_device_id inv_mpu_id[] = { {"mpu6050", INV_MPU6050}, + {"mpu6500", INV_MPU6500}, {} }; diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h b/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h index f383955..4ddfd03 100644 --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h @@ -59,6 +59,7 @@ struct inv_mpu6050_reg_map { /*device enum */ enum inv_devices { INV_MPU6050, + INV_MPU6500, INV_NUM_PARTS };
Adding MPU6500 in target list for this driver. Description: Source Document: MPU-6500 Register Map and Descriptions Revision 2.1 Section 3: Register Map This section describes difference in terms device programmability bewteen MPU6050 and MPU6500. These are different registers, which differs between MPU6050 and MPU6500. Addr Name --------------------- 1E LP_ACCEL_ODR 6C PWR_MGMT_2 77 XA_OFFSET_H 78 XA_OFFSET_L 7A YA_OFFSET_H 7B YA_OFFSET_L 7D ZA_OFFSET_H 7E ZA_OFFSET_L But the current MPU6050 driver doesn't use registers which are different except PWR_MGMT_2. The difference is support of "LP_WAKE_CTRL" at bit6-7 in MPU6050 mode. In MPU6500 they are not defined. In current mpu6050 driver, only values used for this register are for standby mode for gyro and accelerometer. In both case frequency of wakeups is set to default and not using bit 6-7. So this driver van as well support MPU6500. In addition MPU6500 can run MPU6050 mode by changing device trim settings. So changing config comments to allow MPU6500 to use this driver. When ths driver is enhanced to support more functions, i2c driver data INV_MPU6500 or "WHO_AM_I" register can be used to add additional functionality. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> --- drivers/iio/imu/inv_mpu6050/Kconfig | 2 ++ drivers/iio/imu/inv_mpu6050/inv_mpu_core.c | 1 + drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h | 1 + 3 files changed, 4 insertions(+)