linux-kernel - Re: [PATCH 2/2] spi: qup: Request CS GPIO's during probe

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Date:	Sat, 7 Mar 2015 10:59:48 +0000
From:	Mark Brown <broonie@...nel.org>
To:	"Ivan T. Ivanov" <iivanov@...sol.com>
Cc:	linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH 2/2] spi: qup: Request CS GPIO's during probe

On Fri, Mar 06, 2015 at 05:26:18PM +0200, Ivan T. Ivanov wrote:

> Ensure that driver is owner of the GPIO's used for CS signals.

> +	for (cs = 0; cs < master->num_chipselect; cs++) {
> +		cs_gpio = of_get_named_gpio(dev->of_node, "cs-gpios", cs);
> +

Any new GPIO users should really be using the gpiod API, however this is
duplicating core functionality so as Stephen says why are we doing this?

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