On Thu, 24 Oct 2024 13:29:05 +0000 Ricardo Ribalda <ribalda@xxxxxxxxxxxx> wrote: > The HID Usage Table at https://usb.org/sites/default/files/hut1_5.pdf > > - 0x4b2 for Human Proximity Range Add more here from the references the above has. https://www.usb.org/sites/default/files/hutrr39b_0.pdf Distance between a human and the computer. Default unit of measure is meters; > - 0x4bd for Human Attention Detected > Human-Presence sensors detect the presence of humans in the sensor’s field-of-view using diverse and evolving technologies. Some presence sensors are implemented with low resolution video cameras, which can additionally track a subject’s attention (i.e. if the user is ‘looking’ at the system with the integrated sensor). A Human-Presence sensor, providing a Host with the user’s attention state, allows the Host to optimize its behavior. For example, to brighten/dim the system display, based on the user’s attention to the system (potentially prolonging battery life). This one is a 0/1 signal if I read the schema right. Which is also true for the existing HUMAN_PRESENCE. Not a problem but worth mentioning in this description. https://www.usb.org/sites/default/files/hutrr107-humanpresenceattention_1.pdf > Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx> > --- > include/linux/hid-sensor-ids.h | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/include/linux/hid-sensor-ids.h b/include/linux/hid-sensor-ids.h > index 6730ee900ee1..8a03d9696b1c 100644 > --- a/include/linux/hid-sensor-ids.h > +++ b/include/linux/hid-sensor-ids.h > @@ -30,6 +30,8 @@ > #define HID_USAGE_SENSOR_PROX 0x200011 > #define HID_USAGE_SENSOR_DATA_PRESENCE 0x2004b0 > #define HID_USAGE_SENSOR_HUMAN_PRESENCE 0x2004b1 > +#define HID_USAGE_SENSOR_HUMAN_PROXIMITY 0x2004b2 > +#define HID_USAGE_SENSOR_HUMAN_ATTENTION 0x2004bd > > /* Pressure (200031) */ > #define HID_USAGE_SENSOR_PRESSURE 0x200031 >
