linux-kernel - [PATCH 3/5] ASoC: imx-pcm-rpmsg: Register different platform drivers

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Date:   Mon, 29 Aug 2022 15:51:42 +0800
From:   Chancel Liu <chancel.liu@....com>
To:     lgirdwood@...il.com, broonie@...nel.org, perex@...ex.cz,
        tiwai@...e.com, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org, robh+dt@...nel.org,
        devicetree@...r.kernel.org, krzysztof.kozlowski+dt@...aro.org,
        shengjiu.wang@....com, Xiubo.Lee@...il.com, festevam@...il.com,
        nicoleotsuka@...il.com, linuxppc-dev@...ts.ozlabs.org
Cc:     Chancel Liu <chancel.liu@....com>
Subject: [PATCH 3/5] ASoC: imx-pcm-rpmsg: Register different platform drivers

This patch can register different ASoC platform drivers in reference
to "fsl,platform" property of the corresponding node in dts. So sound
cards based on different rpmsg channels can link to their respective
platform drivers.

Signed-off-by: Chancel Liu <chancel.liu@....com>
---
 sound/soc/fsl/imx-pcm-rpmsg.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/sound/soc/fsl/imx-pcm-rpmsg.c b/sound/soc/fsl/imx-pcm-rpmsg.c
index 35049043e532..2f310994f7ee 100644
--- a/sound/soc/fsl/imx-pcm-rpmsg.c
+++ b/sound/soc/fsl/imx-pcm-rpmsg.c
@@ -178,7 +178,7 @@ static int imx_rpmsg_pcm_hw_params(struct snd_soc_component *component,
 		msg->s_msg.param.channels = RPMSG_CH_STEREO;
 		break;
 	default:
-		ret = -EINVAL;
+		msg->s_msg.param.channels = params_channels(params);
 		break;
 	}
 
@@ -684,7 +684,7 @@ static int imx_rpmsg_pcm_probe(struct platform_device *pdev)
 	info->rpdev = container_of(pdev->dev.parent, struct rpmsg_device, dev);
 	info->dev = &pdev->dev;
 	/* Setup work queue */
-	info->rpmsg_wq = alloc_ordered_workqueue("rpmsg_audio",
+	info->rpmsg_wq = alloc_ordered_workqueue(info->rpdev->id.name,
 						 WQ_HIGHPRI |
 						 WQ_UNBOUND |
 						 WQ_FREEZABLE);
@@ -723,11 +723,15 @@ static int imx_rpmsg_pcm_probe(struct platform_device *pdev)
 	if (ret)
 		goto fail;
 
-	component = snd_soc_lookup_component(&pdev->dev, IMX_PCM_DRV_NAME);
+	component = snd_soc_lookup_component(&pdev->dev, NULL);
 	if (!component) {
 		ret = -EINVAL;
 		goto fail;
 	}
+
+	/* platform component name is used by machine driver to link with */
+	component->name = info->rpdev->id.name;
+
 #ifdef CONFIG_DEBUG_FS
 	component->debugfs_prefix = "rpmsg";
 #endif
-- 
2.25.1