Re: [PATCH 2/3] iio: mma8452: use enum for channel index

[Jonathan Cameron <jic23@kernel.org>]

On 15/12/15 16:45, Martin Kepplinger wrote:
> This gets rid of some magic numbers by adding an enum.
> 
> Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com>
> Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com>
Applied to the togreg branch of iio.git - initially pushed out as testing
for the autobuilders to play with it.

Thanks,

Jonathan
> ---
>  drivers/iio/accel/mma8452.c | 39 +++++++++++++++++++++++----------------
>  1 file changed, 23 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/iio/accel/mma8452.c b/drivers/iio/accel/mma8452.c
> index 162bbef..ccc632a 100644
> --- a/drivers/iio/accel/mma8452.c
> +++ b/drivers/iio/accel/mma8452.c
> @@ -143,6 +143,13 @@ struct mma_chip_info {
>  	u8 ev_count;
>  };
>  
> +enum {
> +	idx_x,
> +	idx_y,
> +	idx_z,
> +	idx_ts,
> +};
> +
>  static int mma8452_drdy(struct mma8452_data *data)
>  {
>  	int tries = 150;
> @@ -816,31 +823,31 @@ static struct attribute_group mma8452_event_attribute_group = {
>  }
>  
>  static const struct iio_chan_spec mma8452_channels[] = {
> -	MMA8452_CHANNEL(X, 0, 12),
> -	MMA8452_CHANNEL(Y, 1, 12),
> -	MMA8452_CHANNEL(Z, 2, 12),
> -	IIO_CHAN_SOFT_TIMESTAMP(3),
> +	MMA8452_CHANNEL(X, idx_x, 12),
> +	MMA8452_CHANNEL(Y, idx_y, 12),
> +	MMA8452_CHANNEL(Z, idx_z, 12),
> +	IIO_CHAN_SOFT_TIMESTAMP(idx_ts),
>  };
>  
>  static const struct iio_chan_spec mma8453_channels[] = {
> -	MMA8452_CHANNEL(X, 0, 10),
> -	MMA8452_CHANNEL(Y, 1, 10),
> -	MMA8452_CHANNEL(Z, 2, 10),
> -	IIO_CHAN_SOFT_TIMESTAMP(3),
> +	MMA8452_CHANNEL(X, idx_x, 10),
> +	MMA8452_CHANNEL(Y, idx_y, 10),
> +	MMA8452_CHANNEL(Z, idx_z, 10),
> +	IIO_CHAN_SOFT_TIMESTAMP(idx_ts),
>  };
>  
>  static const struct iio_chan_spec mma8652_channels[] = {
> -	MMA8652_CHANNEL(X, 0, 12),
> -	MMA8652_CHANNEL(Y, 1, 12),
> -	MMA8652_CHANNEL(Z, 2, 12),
> -	IIO_CHAN_SOFT_TIMESTAMP(3),
> +	MMA8652_CHANNEL(X, idx_x, 12),
> +	MMA8652_CHANNEL(Y, idx_y, 12),
> +	MMA8652_CHANNEL(Z, idx_z, 12),
> +	IIO_CHAN_SOFT_TIMESTAMP(idx_ts),
>  };
>  
>  static const struct iio_chan_spec mma8653_channels[] = {
> -	MMA8652_CHANNEL(X, 0, 10),
> -	MMA8652_CHANNEL(Y, 1, 10),
> -	MMA8652_CHANNEL(Z, 2, 10),
> -	IIO_CHAN_SOFT_TIMESTAMP(3),
> +	MMA8652_CHANNEL(X, idx_x, 10),
> +	MMA8652_CHANNEL(Y, idx_y, 10),
> +	MMA8652_CHANNEL(Z, idx_z, 10),
> +	IIO_CHAN_SOFT_TIMESTAMP(idx_ts),
>  };
>  
>  enum {
>