linux-kernel - Re: [PATCH v6 2/2] iio: light: Add support for ltrf216a sensor

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Date:   Thu, 7 Jul 2022 00:09:38 +0300
From:   Dmitry Osipenko <dmitry.osipenko@...labora.com>
To:     Shreeya Patel <shreeya.patel@...labora.com>, jic23@...nel.org,
        lars@...afoo.de, robh+dt@...nel.org, Zhigang.Shi@...eon.com,
        krisman@...labora.com
Cc:     linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel@...labora.com,
        alvaro.soliverez@...labora.com, andy.shevchenko@...il.com,
        digetx@...il.com, kernel test robot <lkp@...el.com>
Subject: Re: [PATCH v6 2/2] iio: light: Add support for ltrf216a sensor

On 6/15/22 16:51, Shreeya Patel wrote:
> +static int ltrf216a_probe(struct i2c_client *client)
> +{
> +	struct ltrf216a_data *data;
> +	struct iio_dev *indio_dev;
> +	int ret;
> +
> +	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
> +	if (!indio_dev)
> +		return -ENOMEM;
> +
> +	data = iio_priv(indio_dev);
> +	i2c_set_clientdata(client, indio_dev);
> +	data->client = client;
> +
> +	mutex_init(&data->lock);
> +
> +	indio_dev->info = &ltrf216a_info;
> +	indio_dev->name = LTRF216A_DRV_NAME;
> +	indio_dev->channels = ltrf216a_channels;
> +	indio_dev->num_channels = ARRAY_SIZE(ltrf216a_channels);
> +	indio_dev->modes = INDIO_DIRECT_MODE;
> +
> +	/* reset sensor, chip fails to respond to this, so ignore any errors */
> +	ltrf216a_reset(indio_dev);

Shouldn't SW resetting be done after enabling sensor? Perhaps that's why
it fails to respond?

-- 
Best regards,
Dmitry