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mtd: rawnand: ams-delta: Handle more GPIO pins as optional

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In order to make the driver more useful on platforms other than Amstrad
Delta, allow GPIO descriptor pointers of possibly non-critical NWP and
NCE pins to be initialised as NULL.

Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20200212003929.6682-10-jmkrzyszt@gmail.com
This commit is contained in:
Janusz Krzysztofik 2020-02-12 01:39:24 +01:00 committed by Miquel Raynal
parent 586a746b32
commit ea5ea9fa6d
1 changed files with 4 additions and 2 deletions
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6
drivers/mtd/nand/raw/ams-delta.c
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@ -264,14 +264,16 @@ static int ams_delta_init(struct platform_device *pdev)
platform_set_drvdata(pdev, priv);
/* Set chip enabled but write protected */
priv->gpiod_nwp = devm_gpiod_get(&pdev->dev, "nwp", GPIOD_OUT_HIGH);
priv->gpiod_nwp = devm_gpiod_get_optional(&pdev->dev, "nwp",
GPIOD_OUT_HIGH);
if (IS_ERR(priv->gpiod_nwp)) {
err = PTR_ERR(priv->gpiod_nwp);
dev_err(&pdev->dev, "NWP GPIO request failed (%d)\n", err);
return err;
}
priv->gpiod_nce = devm_gpiod_get(&pdev->dev, "nce", GPIOD_OUT_LOW);
priv->gpiod_nce = devm_gpiod_get_optional(&pdev->dev, "nce",
GPIOD_OUT_LOW);
if (IS_ERR(priv->gpiod_nce)) {
err = PTR_ERR(priv->gpiod_nce);
dev_err(&pdev->dev, "NCE GPIO request failed (%d)\n", err);