Hi
...
> > >   sysfs_remove_group(&sensor_inst->pdev->dev.kobj,
> > > diff --git a/include/linux/hid-sensor-ids.h 
> > > b/include/linux/hid-sensor-ids.h
> > > index 530c09f3e64a..46db3056f04b 100644
> > > --- a/include/linux/hid-sensor-ids.h
> > > +++ b/include/linux/hid-sensor-ids.h
> > > @@ -128,6 +128,10 @@
> > >  #define HID_USAGE_SENSOR_UNITS_DEGREES_PER_SECOND                0x15
> > >  
> > >  /* Common selectors */
> > > +#define HID_USAGE_SENSOR_PROP_DESC                               0x200300
> > > +#define HID_USAGE_SENSOR_PROP_FRIENDLY_NAME                      0x200301
> > > +#define HID_USAGE_SENSOR_PROP_SERIAL_NUM                 0x200307
> > > +#define HID_USAGE_SENSOR_PROP_MANUFACTURER                       0x200305
> > >  #define HID_USAGE_SENSOR_PROP_REPORT_INTERVAL                    0x20030E
> > >  #define HID_USAGE_SENSOR_PROP_SENSITIVITY_ABS                    0x20030F
> > >  #define HID_USAGE_SENSOR_PROP_SENSITIVITY_RANGE_PCT              0x200310
> > > @@ -159,4 +163,39 @@
> > >  #define HID_USAGE_SENSOR_PROP_REPORTING_STATE_NO_EVENTS_ENUM     0x200840
> > >  #define HID_USAGE_SENSOR_PROP_REPORTING_STATE_ALL_EVENTS_ENUM    0x200841
> > >  
> > > +/* Custom Sensor (2000e1) */
> > > +#define HID_USAGE_SENSOR_HINGE                                   0x20020B
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_LOCATION                     0x200400
> > > +#define HID_USAGE_SENSOR_DATA_FIELE_TIME_SINCE_SYS_BOOT          0x20052B
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_USAGE         0x200541
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE         0x200543  
> > Given these are all defined in a block could we use a macro?
> > HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE(x)                     0x200543 + 
> > (x)
> > 
> > perhaps?
> > 
> > I'm not sure what the preferred convention is in this file.  
> If using HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE(x), we should give a range 
> to x, like (1<x<28).
> How to ensure the x is in the range? It can be an issue when someone using x 
> out of the range.

It can be done via build time checking.
https://elixir.bootlin.com/linux/latest/source/include/linux/build_bug.h#L49
Normally we wouldn't bother and would rely on review to pick up on this but
I'd have no problem with a paranoid check in the macro. Particularly as 28 isn't
exactly and obvious number to support!

> 
> Thanks
> Xiang
> >   
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_1               0x200544
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_2               0x200545
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_3               0x200546
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_4               0x200547
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_5               0x200548
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_6               0x200549
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_7               0x20054A
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_8               0x20054B
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_9               0x20054C
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_10              0x20054D
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_11              0x20054E
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_12              0x20054F
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_13              0x200550
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_14              0x200551
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_15              0x200552
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_16              0x200553
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_17              0x200554
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_18              0x200555
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_19              0x200556
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_20              0x200557
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_21              0x200558
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_22              0x200559
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_23              0x20055A
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_24              0x20055B
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_25              0x20055C
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_26              0x20055D
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_27              0x20055E
> > > +#define HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE_28              0x20055F
> > > +
> > >  #endif  
> >   

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