linux-kernel - Re: [PATCH v2 2/9] ASoC: tegra: add support for CIF programming

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Date:   Thu, 6 Feb 2020 17:26:47 +0530
From:   Sameer Pujar <spujar@...dia.com>
To:     Dmitry Osipenko <digetx@...il.com>, <perex@...ex.cz>,
        <tiwai@...e.com>, <robh+dt@...nel.org>
CC:     <spujar@...dia.com>, <broonie@...nel.org>, <lgirdwood@...il.com>,
        <thierry.reding@...il.com>, <jonathanh@...dia.com>,
        <alsa-devel@...a-project.org>, <devicetree@...r.kernel.org>,
        <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <sharadg@...dia.com>, <mkumard@...dia.com>,
        <viswanathl@...dia.com>, <rlokhande@...dia.com>,
        <dramesh@...dia.com>, <atalambedu@...dia.com>
Subject: Re: [PATCH v2 2/9] ASoC: tegra: add support for CIF programming



On 2/5/2020 10:32 PM, Dmitry Osipenko wrote:
> External email: Use caution opening links or attachments
>
>
> 30.01.2020 13:33, Sameer Pujar пишет:
> ...
>> +#include <linux/module.h>
>> +#include <linux/regmap.h>
>> +#include "tegra_cif.h"
>> +
>> +void tegra_set_cif(struct regmap *regmap, unsigned int reg,
>> +                struct tegra_cif_conf *conf)
>> +{
>> +     unsigned int value;
>> +
>> +     value = (conf->threshold << TEGRA_ACIF_CTRL_FIFO_TH_SHIFT) |
>> +             ((conf->audio_ch - 1) << TEGRA_ACIF_CTRL_AUDIO_CH_SHIFT) |
>> +             ((conf->client_ch - 1) << TEGRA_ACIF_CTRL_CLIENT_CH_SHIFT) |
>> +             (conf->audio_bits << TEGRA_ACIF_CTRL_AUDIO_BITS_SHIFT) |
>> +             (conf->client_bits << TEGRA_ACIF_CTRL_CLIENT_BITS_SHIFT) |
>> +             (conf->expand << TEGRA_ACIF_CTRL_EXPAND_SHIFT) |
>> +             (conf->stereo_conv << TEGRA_ACIF_CTRL_STEREO_CONV_SHIFT) |
>> +             (conf->replicate << TEGRA_ACIF_CTRL_REPLICATE_SHIFT) |
>> +             (conf->truncate << TEGRA_ACIF_CTRL_TRUNCATE_SHIFT) |
>> +             (conf->mono_conv << TEGRA_ACIF_CTRL_MONO_CONV_SHIFT);
>> +
>> +     regmap_update_bits(regmap, reg, TEGRA_ACIF_UPDATE_MASK, value);
>> +}
>> +EXPORT_SYMBOL_GPL(tegra_set_cif);
> Are you going to add more stuff into this source file later on?

Yes I plan to add Tegra30 and Tegra124 CIF functions in this. Anything 
related to CIF can be moved here.
>
> If not, then it's too much to have a separate driver module just for a
> single tiny function, you should move it into the header file (make it
> inline).