linux-kernel - [PATCH v2] ASoC: core: Don't set platform name when of

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Date:   Thu, 25 Mar 2021 13:26:27 +0200
From:   Daniel Baluta <daniel.baluta@....nxp.com>
To:     alsa-devel@...a-project.org, lgirdwood@...il.com, perex@...ex.cz,
        tiwai@...e.com
Cc:     daniel.baluta@...il.com, linux-kernel@...r.kernel.org,
        linux-imx@....com, ranjani.sridharan@...ux.intel.com,
        pierre-louis.bossart@...ux.intel.com, shengjiu.wang@....com,
        aisheng.dong@....com, Daniel Baluta <daniel.baluta@....com>
Subject: [PATCH v2] ASoC: core: Don't set platform name when of_node is set

From: Daniel Baluta <daniel.baluta@....com>

A DAI link has 3 components:
	* CPU
	* platform
	* codec(s)

A component is specified via:
	* name
	* of_node
	* dai_name

In order to avoid confusion when building a sound card we disallow
matching by both name and of_node (1).

soc_check_tplg_fes allows overriding certain BE links by overriding
BE link name. This doesn't work well if BE link was specified via DT,
because we end up with a link with both name and of_node specified
which is conflicting with (1).

In order to fix this we need to:
	* override of_node if component was specified via DT
	* override name, otherwise.

Signed-off-by: Daniel Baluta <daniel.baluta@....com>
---
 sound/soc/soc-core.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 522bae73640a..7a1c011a7fe0 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1648,7 +1648,11 @@ static void soc_check_tplg_fes(struct snd_soc_card *card)
 				dev_err(card->dev, "init platform error");
 				continue;
 			}
-			dai_link->platforms->name = component->name;
+
+			if (component->dev->of_node)
+				dai_link->platforms->of_node = component->dev->of_node;
+			else
+				dai_link->platforms->name = component->name;
 
 			/* convert non BE into BE */
 			if (!dai_link->no_pcm) {
-- 
2.27.0