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

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Date:   Mon, 27 Jan 2020 10:41:10 +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>, <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 1/21/2020 9:34 PM, Dmitry Osipenko wrote:
> External email: Use caution opening links or attachments
>
>
> 21.01.2020 07:41, Sameer Pujar пишет:
>> 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.
>>
> I'll help with the testing once all obvious problems will be fixed.

Thanks Dmitry. However I plan to send Tegra30 related patch separately.
In this series I will focus on Tegra210 and later.