linux-kernel - Re: [PATCH v2 2/2] ASoC: tegra: Unify ASoC machine drivers

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Message-ID: <8e5d4442-00a4-460b-d37a-8962960dd7ff@perex.cz>
Date:   Thu, 20 May 2021 21:02:49 +0200
From:   Jaroslav Kysela <perex@...ex.cz>
To:     Dmitry Osipenko <digetx@...il.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Mark Brown <broonie@...nel.org>, Takashi Iwai <tiwai@...e.com>,
        Ion Agorria <ion@...rria.com>,
        Svyatoslav Ryhel <clamor95@...il.com>,
        Liam Girdwood <lgirdwood@...il.com>
Cc:     alsa-devel@...a-project.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/2] ASoC: tegra: Unify ASoC machine drivers

Dne 20. 05. 21 v 19:50 Dmitry Osipenko napsal(a):
> Squash all machine drivers into a single-universal one. This reduces
> code duplication, eases addition of a new drivers and upgrades older
> code to a modern Linux kernel APIs.
> 


> +static struct snd_soc_card snd_soc_tegra_wm9712 = {
> +	.dai_link = &tegra_wm9712_dai,
> +	.num_links = 1,
> +	.fully_routed = true,
> +};
Please, could you also initialize snd_soc_card->components? It may be useful
to pass the codec identification to the user space like:

.components = "codec:wm9712"

The passed information should be consistent. You may look into the Intel ASoC
drivers for the examples (card->components initialization). There are also
hints about the number of connected microphones ("cfg-mic:2" - configuration
with 2 microphones) or the codec purpose ("hs:rt711" - headset codec is RT711)
etc.

					Jaroslav


Jaroslav Kysela <perex@...ex.cz>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.