ASoC: fsl: remove use of imx-pcm-audio from imx-ssi

Rather than instantiating imx-pcm-audio to call imx_pcm_dma_init(),
imx-ssi can just directly call it to save the use of imx-pcm-audio.
With this change, imx-ssi becomes not only a cpu DAI but also a
platform device, so updates platform device setup in imx-mc13783 and
mx27vis-aic32x4 accordingly.
Signed-off-by: NShawn Guo <shawn.guo@linaro.org>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/fsl/imx-mc13783.c

@@ -64,7 +64,7 @@ static struct snd_soc_dai_link imx_mc13783_dai_mc13783[] = {
 		.codec_dai_name	 = "mc13783-hifi",
 		.codec_name	 = "mc13783-codec",
 		.cpu_dai_name	 = "imx-ssi.0",
-		.platform_name	 = "imx-pcm-audio.0",
+		.platform_name	 = "imx-ssi.0",
 		.ops		 = &imx_mc13783_hifi_ops,
 		.symmetric_rates = 1,
 		.dai_fmt 	 = FMT_SSI,

sound/soc/fsl/imx-ssi.c

@@ -608,24 +608,13 @@ static int imx_ssi_probe(struct platform_device *pdev)
 		goto failed_pdev_fiq_add;
 	}
 
-	ssi->soc_platform_pdev = platform_device_alloc("imx-pcm-audio", pdev->id);
-	if (!ssi->soc_platform_pdev) {
-		ret = -ENOMEM;
-		goto failed_pdev_alloc;
-	}
-
-	platform_set_drvdata(ssi->soc_platform_pdev, ssi);
-	ret = platform_device_add(ssi->soc_platform_pdev);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to add platform device\n");
-		goto failed_pdev_add;
-	}
+	ret = imx_pcm_dma_init(pdev);
+	if (ret)
+		goto failed_pcm_dma;
 
 	return 0;
 
-failed_pdev_add:
-	platform_device_put(ssi->soc_platform_pdev);
-failed_pdev_alloc:
+failed_pcm_dma:
 	platform_device_del(ssi->soc_platform_pdev_fiq);
 failed_pdev_fiq_add:
 	platform_device_put(ssi->soc_platform_pdev_fiq);
@@ -645,7 +634,7 @@ static int imx_ssi_remove(struct platform_device *pdev)
 	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	struct imx_ssi *ssi = platform_get_drvdata(pdev);
 
-	platform_device_unregister(ssi->soc_platform_pdev);
+	imx_pcm_dma_exit(pdev);
 	platform_device_unregister(ssi->soc_platform_pdev_fiq);
 
 	snd_soc_unregister_component(&pdev->dev);

sound/soc/fsl/imx-ssi.h

@@ -212,7 +212,6 @@ struct imx_ssi {
 
 	int enabled;
 
-	struct platform_device *soc_platform_pdev;
 	struct platform_device *soc_platform_pdev_fiq;
 };
 

sound/soc/fsl/mx27vis-aic32x4.c

@@ -161,7 +161,7 @@ static struct snd_soc_dai_link mx27vis_aic32x4_dai = {
 	.name		= "tlv320aic32x4",
 	.stream_name	= "TLV320AIC32X4",
 	.codec_dai_name	= "tlv320aic32x4-hifi",
-	.platform_name	= "imx-pcm-audio.0",
+	.platform_name	= "imx-ssi.0",
 	.codec_name	= "tlv320aic32x4.0-0018",
 	.cpu_dai_name	= "imx-ssi.0",
 	.ops		= &mx27vis_aic32x4_snd_ops,