ASoC: samsung: Specify DMA channel names through custom DMA config

This is a part of conversion of Samsung platforms to use the custom DMA
config for specifying DMA channel names, in addition to passing custom
DMA device for the secondary CPU DAI's "PCM" component for some variants
of the I2S controller.

We also don't set the SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME any more
as setting it wouldn't allow to specify DMA channels through the custom
DMA config.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/samsung/dmaengine.c

@@ -28,7 +28,6 @@ int samsung_asoc_dma_platform_register(struct device *dev, dma_filter_fn filter,
 				       const char *tx, const char *rx,
 				       struct device *dma_dev)
 {
-	unsigned int flags = SND_DMAENGINE_PCM_FLAG_COMPAT;
 	struct snd_dmaengine_pcm_config *pcm_conf;
 
 	pcm_conf = devm_kzalloc(dev, sizeof(*pcm_conf), GFP_KERNEL);
@@ -39,14 +38,11 @@ int samsung_asoc_dma_platform_register(struct device *dev, dma_filter_fn filter,
 	pcm_conf->compat_filter_fn = filter;
 	pcm_conf->dma_dev = dma_dev;
 
-	if (dev->of_node) {
-		pcm_conf->chan_names[SNDRV_PCM_STREAM_PLAYBACK] = tx;
-		pcm_conf->chan_names[SNDRV_PCM_STREAM_CAPTURE] = rx;
-	} else {
-		flags |= SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME;
-	}
+	pcm_conf->chan_names[SNDRV_PCM_STREAM_PLAYBACK] = tx;
+	pcm_conf->chan_names[SNDRV_PCM_STREAM_CAPTURE] = rx;
 
-	return devm_snd_dmaengine_pcm_register(dev, pcm_conf, flags);
+	return devm_snd_dmaengine_pcm_register(dev, pcm_conf,
+				SND_DMAENGINE_PCM_FLAG_COMPAT);
 }
 EXPORT_SYMBOL_GPL(samsung_asoc_dma_platform_register);
 

sound/soc/samsung/i2s.c

@@ -1460,7 +1460,7 @@ static int samsung_i2s_probe(struct platform_device *pdev)
 		pri_dai->drv->playback.channels_max = 6;
 
 	ret = samsung_asoc_dma_platform_register(&pdev->dev, pri_dai->filter,
-						 NULL, NULL, NULL);
+						 "tx", "rx", NULL);
 	if (ret < 0)
 		goto err_disable_clk;
 

sound/soc/samsung/s3c2412-i2s.c

@@ -177,7 +177,7 @@ static int s3c2412_iis_dev_probe(struct platform_device *pdev)
 
 	ret = samsung_asoc_dma_platform_register(&pdev->dev,
 						 pdata->dma_filter,
-						 NULL, NULL, NULL);
+						 "tx", "rx", NULL);
 	if (ret) {
 		pr_err("failed to register the DMA: %d\n", ret);
 		return ret;

sound/soc/samsung/s3c24xx-i2s.c

@@ -446,7 +446,7 @@ static int s3c24xx_iis_dev_probe(struct platform_device *pdev)
 	s3c24xx_i2s_pcm_stereo_in.addr = res->start + S3C2410_IISFIFO;
 
 	ret = samsung_asoc_dma_platform_register(&pdev->dev, NULL,
-						 NULL, NULL, NULL);
+						 "tx", "rx", NULL);
 	if (ret) {
 		dev_err(&pdev->dev, "Failed to register the DMA: %d\n", ret);
 		return ret;