[PATCH v4 09/22] ASoC: tegra20: spdif: Use more resource-managed helpers

[Dmitry Osipenko]

Use resource-managed helpers to make code cleaner. Driver's remove callback
isn't needed anymore since driver is completely resource-managed now.

Signed-off-by: Dmitry Osipenko <digetx at gmail.com>
---
 sound/soc/tegra/tegra20_spdif.c | 33 +++++++++------------------------
 sound/soc/tegra/tegra_pcm.c     |  6 ++++++
 sound/soc/tegra/tegra_pcm.h     |  1 +
 3 files changed, 16 insertions(+), 24 deletions(-)

diff --git a/sound/soc/tegra/tegra20_spdif.c b/sound/soc/tegra/tegra20_spdif.c
index d5c618611dbb..7dd263721c2c 100644
--- a/sound/soc/tegra/tegra20_spdif.c
+++ b/sound/soc/tegra/tegra20_spdif.c
@@ -289,38 +289,24 @@ static int tegra20_spdif_platform_probe(struct platform_device *pdev)
 	spdif->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
 	spdif->playback_dma_data.maxburst = 4;
 
-	pm_runtime_enable(&pdev->dev);
+	ret = devm_pm_runtime_enable(&pdev->dev);
+	if (ret)
+		return ret;
 
-	ret = snd_soc_register_component(&pdev->dev, &tegra20_spdif_component,
-					 &tegra20_spdif_dai, 1);
+	ret = devm_snd_soc_register_component(&pdev->dev,
+					      &tegra20_spdif_component,
+					      &tegra20_spdif_dai, 1);
 	if (ret) {
 		dev_err(&pdev->dev, "Could not register DAI: %d\n", ret);
-		goto err_pm_disable;
+		return ret;
 	}
 
-	ret = tegra_pcm_platform_register(&pdev->dev);
+	ret = devm_tegra_pcm_platform_register(&pdev->dev);
 	if (ret) {
 		dev_err(&pdev->dev, "Could not register PCM: %d\n", ret);
-		goto err_unregister_component;
+		return ret;
 	}
 
-	return 0;
-
-err_unregister_component:
-	snd_soc_unregister_component(&pdev->dev);
-err_pm_disable:
-	pm_runtime_disable(&pdev->dev);
-
-	return ret;
-}
-
-static int tegra20_spdif_platform_remove(struct platform_device *pdev)
-{
-	tegra_pcm_platform_unregister(&pdev->dev);
-	snd_soc_unregister_component(&pdev->dev);
-
-	pm_runtime_disable(&pdev->dev);
-
 	return 0;
 }
 
@@ -342,7 +328,6 @@ static struct platform_driver tegra20_spdif_driver = {
 		.of_match_table = tegra20_spdif_of_match,
 	},
 	.probe = tegra20_spdif_platform_probe,
-	.remove = tegra20_spdif_platform_remove,
 };
 module_platform_driver(tegra20_spdif_driver);
 
diff --git a/sound/soc/tegra/tegra_pcm.c b/sound/soc/tegra/tegra_pcm.c
index ef1e74d95236..468c8e77de21 100644
--- a/sound/soc/tegra/tegra_pcm.c
+++ b/sound/soc/tegra/tegra_pcm.c
@@ -48,6 +48,12 @@ int tegra_pcm_platform_register(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(tegra_pcm_platform_register);
 
+int devm_tegra_pcm_platform_register(struct device *dev)
+{
+	return devm_snd_dmaengine_pcm_register(dev, &tegra_dmaengine_pcm_config, 0);
+}
+EXPORT_SYMBOL_GPL(devm_tegra_pcm_platform_register);
+
 int tegra_pcm_platform_register_with_chan_names(struct device *dev,
 				struct snd_dmaengine_pcm_config *config,
 				char *txdmachan, char *rxdmachan)
diff --git a/sound/soc/tegra/tegra_pcm.h b/sound/soc/tegra/tegra_pcm.h
index d602126c65b7..2a36eea1740d 100644
--- a/sound/soc/tegra/tegra_pcm.h
+++ b/sound/soc/tegra/tegra_pcm.h
@@ -32,6 +32,7 @@ int tegra_pcm_hw_params(struct snd_soc_component *component,
 snd_pcm_uframes_t tegra_pcm_pointer(struct snd_soc_component *component,
 				    struct snd_pcm_substream *substream);
 int tegra_pcm_platform_register(struct device *dev);
+int devm_tegra_pcm_platform_register(struct device *dev);
 int tegra_pcm_platform_register_with_chan_names(struct device *dev,
 				struct snd_dmaengine_pcm_config *config,
 				char *txdmachan, char *rxdmachan);
-- 
2.33.1