On Tue, 6 Mar 2018 09:00:11 -0300
Rodrigo Siqueira <rodrigosiqueiram...@gmail.com> wrote:

> The magn_3d_channels array has multiple declarations of iio_chan_spec.
> Most of the iio_chan_spec are very similar, changing only by the .type
> and .channel2 field. This patch reduces the code duplication by adding a
> macro that can replace the iio_chan_spec  repetitions in the
> magn_3d_channels array.
> 
> Signed-off-by: Rodrigo Siqueira <rodrigosiqueiram...@gmail.com>
Whilst this looks fine to me, I'd like Srinivas to take a look before
I apply it as this is his driver.  Please do make sure to cc the author.
Whilst many such email addresses bounce as they have moved on they
don't always.

Jonathan

> ---
>  drivers/iio/magnetometer/hid-sensor-magn-3d.c | 83 
> ++++++---------------------
>  1 file changed, 19 insertions(+), 64 deletions(-)
> 
> diff --git a/drivers/iio/magnetometer/hid-sensor-magn-3d.c 
> b/drivers/iio/magnetometer/hid-sensor-magn-3d.c
> index a1fd9d591818..fff64711a6c8 100644
> --- a/drivers/iio/magnetometer/hid-sensor-magn-3d.c
> +++ b/drivers/iio/magnetometer/hid-sensor-magn-3d.c
> @@ -74,72 +74,27 @@ static const u32 magn_3d_addresses[MAGN_3D_CHANNEL_MAX] = 
> {
>       HID_USAGE_SENSOR_ORIENT_TRUE_NORTH,
>  };
>  
> +#define HID_SENSOR_MAGN_3D_AXIS_CHANNEL(channel_type, characteristic)        
> \
> +     {                                                               \
> +             .type = channel_type,                                   \
> +             .modified = 1,                                          \
> +             .channel2 = characteristic,                             \
> +             .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),           \
> +             .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) | \
> +                                     BIT(IIO_CHAN_INFO_SCALE) |      \
> +                                     BIT(IIO_CHAN_INFO_SAMP_FREQ) |  \
> +                                     BIT(IIO_CHAN_INFO_HYSTERESIS),  \
> +     }                                                               \
> +
>  /* Channel definitions */
>  static const struct iio_chan_spec magn_3d_channels[] = {
> -     {
> -             .type = IIO_MAGN,
> -             .modified = 1,
> -             .channel2 = IIO_MOD_X,
> -             .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
> -             .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
> -             BIT(IIO_CHAN_INFO_SCALE) |
> -             BIT(IIO_CHAN_INFO_SAMP_FREQ) |
> -             BIT(IIO_CHAN_INFO_HYSTERESIS),
> -     }, {
> -             .type = IIO_MAGN,
> -             .modified = 1,
> -             .channel2 = IIO_MOD_Y,
> -             .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
> -             .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
> -             BIT(IIO_CHAN_INFO_SCALE) |
> -             BIT(IIO_CHAN_INFO_SAMP_FREQ) |
> -             BIT(IIO_CHAN_INFO_HYSTERESIS),
> -     }, {
> -             .type = IIO_MAGN,
> -             .modified = 1,
> -             .channel2 = IIO_MOD_Z,
> -             .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
> -             .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
> -             BIT(IIO_CHAN_INFO_SCALE) |
> -             BIT(IIO_CHAN_INFO_SAMP_FREQ) |
> -             BIT(IIO_CHAN_INFO_HYSTERESIS),
> -     }, {
> -             .type = IIO_ROT,
> -             .modified = 1,
> -             .channel2 = IIO_MOD_NORTH_MAGN_TILT_COMP,
> -             .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
> -             .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
> -             BIT(IIO_CHAN_INFO_SCALE) |
> -             BIT(IIO_CHAN_INFO_SAMP_FREQ) |
> -             BIT(IIO_CHAN_INFO_HYSTERESIS),
> -     }, {
> -             .type = IIO_ROT,
> -             .modified = 1,
> -             .channel2 = IIO_MOD_NORTH_TRUE_TILT_COMP,
> -             .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
> -             .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
> -             BIT(IIO_CHAN_INFO_SCALE) |
> -             BIT(IIO_CHAN_INFO_SAMP_FREQ) |
> -             BIT(IIO_CHAN_INFO_HYSTERESIS),
> -     }, {
> -             .type = IIO_ROT,
> -             .modified = 1,
> -             .channel2 = IIO_MOD_NORTH_MAGN,
> -             .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
> -             .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
> -             BIT(IIO_CHAN_INFO_SCALE) |
> -             BIT(IIO_CHAN_INFO_SAMP_FREQ) |
> -             BIT(IIO_CHAN_INFO_HYSTERESIS),
> -     }, {
> -             .type = IIO_ROT,
> -             .modified = 1,
> -             .channel2 = IIO_MOD_NORTH_TRUE,
> -             .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
> -             .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
> -             BIT(IIO_CHAN_INFO_SCALE) |
> -             BIT(IIO_CHAN_INFO_SAMP_FREQ) |
> -             BIT(IIO_CHAN_INFO_HYSTERESIS),
> -     }
> +     HID_SENSOR_MAGN_3D_AXIS_CHANNEL(IIO_MAGN, IIO_MOD_X),
> +     HID_SENSOR_MAGN_3D_AXIS_CHANNEL(IIO_MAGN, IIO_MOD_Y),
> +     HID_SENSOR_MAGN_3D_AXIS_CHANNEL(IIO_MAGN, IIO_MOD_Z),
> +     HID_SENSOR_MAGN_3D_AXIS_CHANNEL(IIO_ROT, IIO_MOD_NORTH_MAGN_TILT_COMP),
> +     HID_SENSOR_MAGN_3D_AXIS_CHANNEL(IIO_ROT, IIO_MOD_NORTH_TRUE_TILT_COMP),
> +     HID_SENSOR_MAGN_3D_AXIS_CHANNEL(IIO_ROT, IIO_MOD_NORTH_MAGN),
> +     HID_SENSOR_MAGN_3D_AXIS_CHANNEL(IIO_ROT, IIO_MOD_NORTH_MAGN),
>  };
>  
>  /* Adjust channel real bits based on report descriptor */

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