Re: [PATCH v3 08/12] iio:adc:ad799x: Add helper function to read/write config register

[Jonathan Cameron <jic23@kernel.org>]

On 12/06/14 05:54, Peter Meerwald wrote:
> 16-bit on ad7997/ad7998, 8-bit elsewhere
>
> Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
> Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Applied.
> ---
>   drivers/iio/adc/ad799x.c | 24 ++++++++++++++++++++++++
>   1 file changed, 24 insertions(+)
>
> diff --git a/drivers/iio/adc/ad799x.c b/drivers/iio/adc/ad799x.c
> index 92401c9..fe2a9b1 100644
> --- a/drivers/iio/adc/ad799x.c
> +++ b/drivers/iio/adc/ad799x.c
> @@ -136,6 +136,30 @@ struct ad799x_state {
>   	unsigned int			transfer_size;
>   };
>
> +static int ad799x_write_config(struct ad799x_state *st, u16 val)
> +{
> +	switch (st->id) {
> +	case ad7997:
> +	case ad7998:
> +		return i2c_smbus_write_word_swapped(st->client, AD7998_CONF_REG,
> +			val);
> +	default:
> +		return i2c_smbus_write_byte_data(st->client, AD7998_CONF_REG,
> +			val);
> +	}
> +}
> +
> +static int ad799x_read_config(struct ad799x_state *st)
> +{
> +	switch (st->id) {
> +	case ad7997:
> +	case ad7998:
> +		return i2c_smbus_read_word_swapped(st->client, AD7998_CONF_REG);
> +	default:
> +		return i2c_smbus_read_byte_data(st->client, AD7998_CONF_REG);
> +	}
> +}
> +
>   /**
>    * ad799x_trigger_handler() bh of trigger launched polling to ring buffer
>    *
>