linux-kernel - Re: [PATCH] iio: ti-adc128s052: Drop variable vref

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Message-ID: <b7adef4b-68ae-4a49-937b-307e116976f4@baylibre.com>
Date: Mon, 28 Apr 2025 10:16:07 -0500
From: David Lechner <dlechner@...libre.com>
To: Matti Vaittinen <mazziesaccount@...il.com>,
 Matti Vaittinen <matti.vaittinen@...rohmeurope.com>
Cc: Jonathan Cameron <jic23@...nel.org>, Nuno Sá
 <nuno.sa@...log.com>, Andy Shevchenko <andy@...nel.org>,
 linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] iio: ti-adc128s052: Drop variable vref

On 4/28/25 2:02 AM, Matti Vaittinen wrote:
> According to Jonathan, variable reference voltages are very rare. It is
> unlikely it is needed, and supporting it makes the code a bit more
> complex.
> 
> Simplify the driver and drop the variable vref support.
> 
> Suggested-by: Jonathan Cameron <jic23@...nel.org>
> Signed-off-by: Matti Vaittinen <mazziesaccount@...il.com>
> 
> ---

Reviewed-by: David Lechner <dlechner@...libre.com>

> @@ -183,17 +173,14 @@ static int adc128_probe(struct spi_device *spi)
>  	indio_dev->channels = config->channels;
>  	indio_dev->num_channels = config->num_channels;
>  
> -	adc->reg = devm_regulator_get(&spi->dev, config->refname);
> -	if (IS_ERR(adc->reg))
> -		return PTR_ERR(adc->reg);
> -
> -	ret = regulator_enable(adc->reg);
> +	ret = devm_regulator_get_enable_read_voltage(&spi->dev,
> +							   config->refname);

Is this properly aligned to the opening "("?