[PATCH v3 4/7] ASoC: codecs: Add RK3308 internal audio codec driver

[Philipp Zabel]

On Mi, 2024-02-21 at 11:22 +0100, Luca Ceresoli wrote:
> Add driver for the internal audio codec of the Rockchip RK3308 SoC.
> 
> Initially based on the vendor kernel driver [0], with lots of cleanups,
> fixes, improvements, conversion to DAPM and removal of some features.
> 
> [0] https://github.com/rockchip-linux/kernel/blob/develop-4.19/sound/soc/codecs/rk3308_codec.c
> 
> Signed-off-by: Luca Ceresoli <luca.ceresoli at bootlin.com>
>
[...]
> diff --git a/sound/soc/codecs/rk3308_codec.c b/sound/soc/codecs/rk3308_codec.c
> new file mode 100644
> index 000000000000..61bfb75f92a3
> --- /dev/null
> +++ b/sound/soc/codecs/rk3308_codec.c
> @@ -0,0 +1,993 @@
[...]
> +static int rk3308_codec_platform_probe(struct platform_device *pdev)
> +{
[...]
> +	rk3308->reset = devm_reset_control_get(&pdev->dev, "codec");
> +	if (IS_ERR(rk3308->reset)) {
> +		err = PTR_ERR(rk3308->reset);
> +		if (err != -ENOENT)
> +			return err;
> +
> +		dev_dbg(&pdev->dev, "No reset control found\n");
> +		rk3308->reset = NULL;
> +	}

Please use devm_reset_control_get_optional_exclusive(). That already
returns NULL instead of -ENOENT if the reset control is not specified
in the device tree. Then dev_err_probe() can be used to report errors.


regards
Philipp