Re: [PATCH v2 2/3] iio: hid-sensor-rotation: Add geomagnetic orientation sensor hid support.

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On 07/05/17 11:24, Song Hongyan wrote:
> Geomagnetic orientation(AM) sensor is one kind of orientation 6dof sensor.
> It gives the device rotation in respect to the earth center and the
> magnetic north. The sensor is implemented through use of an accelerometer
> and magnetometer do not use gyroscope. It is a standard HID sensor.
> 
> More information can be found in:
> http://www.usb.org/developers/hidpage/HUTRR59_-_Usages_for_Wearables.pdf
> 
> Geomagnetic orientation(AM) sensor and dev rotation sensor have same
> channel and share channel usage id. So the most of the code for relative
> orientation sensor can be reused.
> 
> Signed-off-by: Song Hongyan <hongyan.song@xxxxxxxxx>
Applied to the togreg branch of iio.git and pushed out as testing for
the autobuilders to play with it.

Thanks,

Jonathan
> ---
>  drivers/iio/orientation/hid-sensor-rotation.c | 7 +++++++
>  include/linux/hid-sensor-ids.h                | 1 +
>  2 files changed, 8 insertions(+)
> 
> diff --git a/drivers/iio/orientation/hid-sensor-rotation.c b/drivers/iio/orientation/hid-sensor-rotation.c
> index 4d953c2..60d3517 100644
> --- a/drivers/iio/orientation/hid-sensor-rotation.c
> +++ b/drivers/iio/orientation/hid-sensor-rotation.c
> @@ -241,6 +241,9 @@ static int hid_dev_rot_probe(struct platform_device *pdev)
>  	case HID_USAGE_SENSOR_RELATIVE_ORIENTATION:
>  		name = "relative_orientation";
>  		break;
> +	case HID_USAGE_SENSOR_GEOMAGNETIC_ORIENTATION:
> +		name = "geomagnetic_orientation";
> +		break;
>  	default:
>  		return -EINVAL;
>  	}
> @@ -339,6 +342,10 @@ static int hid_dev_rot_remove(struct platform_device *pdev)
>  		/* Relative orientation(AG) sensor */
>  		.name = "HID-SENSOR-20008e",
>  	},
> +	{
> +		/* Geomagnetic orientation(AM) sensor */
> +		.name = "HID-SENSOR-2000c1",
> +	},
>  	{ /* sentinel */ }
>  };
>  MODULE_DEVICE_TABLE(platform, hid_dev_rot_ids);
> diff --git a/include/linux/hid-sensor-ids.h b/include/linux/hid-sensor-ids.h
> index b61b985..4fc47e5 100644
> --- a/include/linux/hid-sensor-ids.h
> +++ b/include/linux/hid-sensor-ids.h
> @@ -83,6 +83,7 @@
>  
>  #define HID_USAGE_SENSOR_DEVICE_ORIENTATION			0x20008A
>  #define HID_USAGE_SENSOR_RELATIVE_ORIENTATION			0x20008E
> +#define HID_USAGE_SENSOR_GEOMAGNETIC_ORIENTATION		0x2000C1
>  #define HID_USAGE_SENSOR_ORIENT_ROTATION_MATRIX			0x200482
>  #define HID_USAGE_SENSOR_ORIENT_QUATERNION			0x200483
>  #define HID_USAGE_SENSOR_ORIENT_MAGN_FLUX			0x200484
> 

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