linux-kernel - Re: [PATCH v3 02/10] ASoC: tegra: add support for CIF programming

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Date:   Fri, 21 Feb 2020 08:27:55 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Sameer Pujar <spujar@...dia.com>, perex@...ex.cz, tiwai@...e.com,
        robh+dt@...nel.org
Cc:     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 v3 02/10] ASoC: tegra: add support for CIF programming

20.02.2020 09:34, Sameer Pujar пишет:
> Audio Client Interface (CIF) is a proprietary interface employed to route
> audio samples through Audio Hub (AHUB) components by inter connecting the
> various modules.
> 
> This patch exports an inline function tegra_set_cif() which can be used,
> for now, to program CIF on Tegra210 and later Tegra generations. Later it
> can be extended to include helpers for legacy chips as well.
> 
> Signed-off-by: Sameer Pujar <spujar@...dia.com>
> ---
>  sound/soc/tegra/tegra_cif.h | 63 +++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 63 insertions(+)
>  create mode 100644 sound/soc/tegra/tegra_cif.h
> 
> diff --git a/sound/soc/tegra/tegra_cif.h b/sound/soc/tegra/tegra_cif.h
> new file mode 100644
> index 0000000..ecc0850
> --- /dev/null
> +++ b/sound/soc/tegra/tegra_cif.h
> @@ -0,0 +1,63 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
> +/*
> + * tegra_cif.h - TEGRA Audio CIF Programming
> + *
> + * Copyright (c) 2020 NVIDIA CORPORATION.  All rights reserved.
> + *
> + */
> +
> +#ifndef __TEGRA_CIF_H__
> +#define __TEGRA_CIF_H__

For completeness here should be:

#include <linux/regmap.h>

...
> +static inline void tegra_set_cif(struct regmap *regmap, unsigned int reg,
> +				 struct tegra_cif_conf *conf)
> +{
...
> +	regmap_update_bits(regmap, reg, TEGRA_ACIF_UPDATE_MASK, value);
> +}
> +
> +#endif
> 

Otherwise:

Reviewed-by: Dmitry Osipenko <digetx@...il.com>