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

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Date:   Tue, 21 Jan 2020 10:11:16 +0530
From:   Sameer Pujar <spujar@...dia.com>
To:     Dmitry Osipenko <digetx@...il.com>, <perex@...ex.cz>,
        <tiwai@...e.com>, <robh+dt@...nel.org>
CC:     <devicetree@...r.kernel.org>, <alsa-devel@...a-project.org>,
        <atalambedu@...dia.com>, <linux-kernel@...r.kernel.org>,
        <lgirdwood@...il.com>, <jonathanh@...dia.com>,
        <viswanathl@...dia.com>, <sharadg@...dia.com>,
        <broonie@...nel.org>, <thierry.reding@...il.com>,
        <linux-tegra@...r.kernel.org>, <rlokhande@...dia.com>,
        <mkumard@...dia.com>, <dramesh@...dia.com>
Subject: Re: [alsa-devel] [PATCH 2/9] ASoC: tegra: add support for CIF
 programming


On 1/20/2020 9:28 PM, Dmitry Osipenko wrote:
> External email: Use caution opening links or attachments
>
>
> Hello Sameer,
>
> 20.01.2020 17:23, Sameer Pujar пишет:
>
> [snip]
>
>> Tegra30 and Tegra124 have an identical CIF programming helper function.
> [snip]
>
>> -#define TEGRA124_AUDIOCIF_CTRL_FIFO_THRESHOLD_SHIFT  24
>> -#define TEGRA124_AUDIOCIF_CTRL_FIFO_THRESHOLD_MASK_US        0x3f
>> -#define TEGRA124_AUDIOCIF_CTRL_FIFO_THRESHOLD_MASK   (TEGRA124_AUDIOCIF_CTRL_FIFO_THRESHOLD_MASK_US << TEGRA124_AUDIOCIF_CTRL_FIFO_THRESHOLD_SHIFT)
>> -
>> -/* Channel count minus 1 */
>> -#define TEGRA30_AUDIOCIF_CTRL_AUDIO_CHANNELS_SHIFT   24
>> -#define TEGRA30_AUDIOCIF_CTRL_AUDIO_CHANNELS_MASK_US 7
>> -#define TEGRA30_AUDIOCIF_CTRL_AUDIO_CHANNELS_MASK    (TEGRA30_AUDIOCIF_CTRL_AUDIO_CHANNELS_MASK_US << TEGRA30_AUDIOCIF_CTRL_AUDIO_CHANNELS_SHIFT)
> The AUDIOCIF_CTRL bitfields are not the same on T30 and T124, why are
> you claiming that programming is identical? Have you actually tried to
> test these patches on T30?

Oh yes! seems like I overlooked the macro values. Thanks for pointing 
this. I will retain separate CIF function for Tegra30.
I do not have a Tegra30 board with me and hence could not test anything 
specific to it apart from build sanity.
If someone can help me test I would really appreciate.