On Mon, 3 Oct 2022 13:59:01 +0300
Ibrahim Tilki <Ibrahim.Tilki@xxxxxxxxxx> wrote:
> Adding support for max11410 24-bit, 1.9ksps delta-sigma adc which
> has 3 differential reference and 10 differential channel inputs.
> Inputs and references can be buffered internally. Inputs can also
> be amplified with internal PGA.
>
> Device has four digital filter modes: FIR50/60, FIR50, FIR60 and SINC4.
> FIR 50Hz and 60Hz rejections can be enabled/disabled separately.
> Digital filter selection affects sampling frequency range so driver
> has to consider the configured filter when configuring sampling frequency.
>
> Signed-off-by: Ibrahim Tilki <Ibrahim.Tilki@xxxxxxxxxx>
One small thing inline that I tidied up whilst applying.
> +static int max11410_configure_channel(struct max11410_state *st,
> + struct iio_chan_spec const *chan)
> +{
> + struct max11410_channel_config cfg = st->channels[chan->address];
> + unsigned int regval;
> + int ret;
> +
> + if (chan->differential)
> + ret = max11410_set_input_mux(st, chan->channel, chan->channel2);
> + else
> + ret = max11410_set_input_mux(st, chan->channel,
> + MAX11410_AINN_GND);
> +
> + if (ret)
> + return ret;
> +
> + regval = FIELD_PREP(MAX11410_CTRL_VREFP_BUF_BIT, cfg.buffered_vrefp) |
> + FIELD_PREP(MAX11410_CTRL_VREFN_BUF_BIT, cfg.buffered_vrefn) |
> + FIELD_PREP(MAX11410_CTRL_REFSEL_MASK, cfg.refsel) |
> + FIELD_PREP(MAX11410_CTRL_UNIPOLAR_BIT, !cfg.bipolar);
drivers/iio/adc/max11410.c:370:18: warning: dubious: x & !y
I've fixed it with
... cfg.bipolar ? 0 : 1);
Shout if that's an issue (I've gotten these backwards in the past ;)
