linux-kernel - Re: [PATCH v5] ASoC: TSCS42xx: Add support for Tempo Semiconductor's TSCS42xx audio CODEC

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Date:   Tue, 12 Dec 2017 13:04:01 +0000
From:   Charles Keepax <ckeepax@...nsource.cirrus.com>
To:     Steven Eckhoff <steven.eckhoff.opensource@...il.com>
CC:     <alsa-devel@...a-project.org>, Liam Girdwood <lgirdwood@...il.com>,
        "Mark Brown" <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5] ASoC: TSCS42xx: Add support for Tempo Semiconductor's
 TSCS42xx audio CODEC

On Mon, Dec 11, 2017 at 01:54:25PM -0600, Steven Eckhoff wrote:
> Currently there is no support for the TSCS42xx audio CODEC.
> 
> Add support for it.
> 
> v5 attempts to address all issues raised in the previous reviews.
> 
> Thank you to everyone who has invested their time reviewing these
> patches.
> 
> Acked-by: Philippe Ombredanne <pombredanne@...b.com>
> Signed-off-by: Steven Eckhoff <steven.eckhoff.opensource@...il.com>
> ---
> +int bytes_tlv_callback(struct snd_kcontrol *kcontrol, int op_flag,
> +	unsigned int size, unsigned int __user *tlv)
> +{
> +	struct tscs_dsp_ctl *ctl =
> +		(struct tscs_dsp_ctl *)kcontrol->private_value;
> +	struct soc_bytes_ext *params = &ctl->bytes_ext;
> +	unsigned int count = size < params->max ? size : params->max;
> +	int ret = -ENXIO;
> +
> +	switch (op_flag) {
> +	case SNDRV_CTL_TLV_OP_READ:
> +		if (params->get)
> +			ret = params->get(kcontrol, tlv, count);
> +		break;
> +	case SNDRV_CTL_TLV_OP_WRITE:
> +		if (params->put)
> +			ret = params->put(kcontrol, tlv, count);
> +		break;
> +	}
> +	return ret;
> +}

Should this function be removed, I am assuming it is a hang over
from the earlier TLV implementation?

Thanks,
Charles