On Mon, Mar 05, 2018 at 01:48:16PM +0100, Mylène Josserand wrote:
> --- /dev/null
> +++ b/sound/soc/codecs/pcm1789-i2c.c
> @@ -0,0 +1,76 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * PCM1789 ASoC I2C driver
> + *
> + * Copyright (c) Bootlin 2018
> + *
> + * Mylène Josserand <mylene.josserand@xxxxxxxxxxx>
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License
Please don't mix C and C++ style comments in a single comment like this
- it looks unintentional. Just use the same style for the whole thing.
You also don't need to include all the boilerplate with the SPDX header.
> +static bool pcm1789_accessible_reg(struct device *dev, unsigned int reg)
> +{
> + return reg >= PCM1789_MUTE_CONTROL && reg <= PCM1789_DAC_VOL_RIGHT;
> +}
> +
> +static bool pcm1789_writeable_reg(struct device *dev, unsigned int reg)
> +{
> + return pcm1789_accessible_reg(dev, reg);
> +}
> +static void pcm1789_work_queue(struct work_struct *work)
> +{
> + struct pcm1789_private *priv = container_of(work,
> + struct pcm1789_private,
> + work);
> +
> + /* Perform a software reset to remove codec from desynchronized state */
> + if (regmap_update_bits(priv->regmap, PCM1789_MUTE_CONTROL,
> + 0x3 << PCM1789_MUTE_SRET, 0) < 0)
> + dev_err(priv->dev, "Error while setting SRET");
> +}
A reset sounds like we'd also need to resync the register map,
presumably this is something else? The comment could be clearer.
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