On Wed, Feb 21, 2018 at 01:33:11PM +0900, Katsuhiro Suzuki wrote:
> +++ b/sound/soc/codecs/bd28623.c
> @@ -0,0 +1,258 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * ROHM BD28623MUV class D speaker amplifier codec driver.
> + *
Please make the entire comment C++ so this looks intentional.
> + dev_err(dev, "Failed to enable supplies: %d\n", ret);
> + return ret;
> + }
> +
> + gpiod_set_value(bd->reset_gpio, 0);
Since this GPIO is not needed in atomic contexts you should use the
_cansleep() versions of the GPIO functions - it doesn't cost you
anything and means that if for some reason someone wired this up to a
GPIO that can't be used in atomic context the driver will just work.
> + bd->reset_gpio = devm_gpiod_get_optional(dev, "reset",
> + GPIOD_OUT_HIGH);
> + bd->mute_gpio = devm_gpiod_get_optional(dev, "mute",
> + GPIOD_OUT_HIGH);
These properties were documented as mandatory in the binding but are
optional here. It's fine that they're optional but I'd expect the
binding to be consistent with this.
> +static int bd28623_remove(struct platform_device *pdev)
> +{
> + struct bd28623_priv *bd = platform_get_drvdata(pdev);
> +
> + regulator_bulk_disable(ARRAY_SIZE(bd->supplies), bd->supplies);
> +
> + return 0;
> +}
We don't enable the supplies explicitly as part of the probe function so
it feels wrong to disable on remove() - I'm sure it is fine in practice
as-is but I'd have to think too hard to confirm that. I'd put this in a
component level remove function instead so that it's consistent.
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