linux-kernel - Re: [PATCH] alsa/usb-audio: Topping DX7s quirk for DSD interface

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Message-ID: <CA+C1juadkNrQ+jcA6BP=FmoVfjxgQBW=m=Gv8htDMC=RzPihvA@mail.gmail.com>
Date:   Mon, 23 Jul 2018 00:41:15 -0700
From:   Yue Wang <yuleopen@...il.com>
To:     tiwai@...e.de
Cc:     linux-kernel@...r.kernel.org, alsa-devel@...a-project.org,
        kai.heng.feng@...onical.com, albaguirre@...il.com,
        nob77413@...il.com, ruslan.bilovol@...il.com, perex@...ex.cz,
        jussi@...arnerd.net, daniel@...que.org
Subject: Re: [PATCH] alsa/usb-audio: Topping DX7s quirk for DSD interface

Hi Takashi

My apologies, it's my first time sending a patch to the kernel, so
there're quite a few things I need to improve.

This patch adds the support for native DSD for Topping DX7s DAC. The
product description is on
http://en.tpdz.net/products_detail/productId=32.html and it's
available on https://www.amazon.com/Balanced-Headphone-Amplifier-Topping-2ES9038Q2M/dp/B07B4VFS21

The DAC uses XMOS chip but uses a special vendor id and product id.
The patch will enable the SNDRV_PCM_FMTBIT_DSD_U32_BE bit for the DAC
hence enable native DSD playback up to DSD512 format.

Thanks again.

Yue
On Mon, Jul 23, 2018 at 12:30 AM Takashi Iwai <tiwai@...e.de> wrote:
>
> On Mon, 23 Jul 2018 09:25:34 +0200,
> <yuleopen@...il.com> wrote:
> >
> > From: Yue Wang <yuleopen@...il.com>
> >
> > Signed-off-by: Yue Wang <yuleopen@...il.com>
>
> Please give more explanation.
> No commit message already indicates that something is very wrong, no
> matter what the change is.
>
>
> thanks,
>
> Takashi