1 files changed, 20 insertions, 49 deletions

diff --git a/sound/soc/tegra/tegra30_i2s.c b/sound/soc/tegra/tegra30_i2s.c
index 6740df541508..36344f0a64c1 100644
--- a/sound/soc/tegra/tegra30_i2s.c
+++ b/sound/soc/tegra/tegra30_i2s.c
@@ -23,6 +23,7 @@
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/regmap.h>
+#include <linux/reset.h>
 #include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
@@ -35,7 +36,7 @@
 
 #define DRV_NAME "tegra30-i2s"
 
-static int tegra30_i2s_runtime_suspend(struct device *dev)
+static __maybe_unused int tegra30_i2s_runtime_suspend(struct device *dev)
 {
 	struct tegra30_i2s *i2s = dev_get_drvdata(dev);
 
@@ -46,7 +47,7 @@ static int tegra30_i2s_runtime_suspend(struct device *dev)
 	return 0;
 }
 
-static int tegra30_i2s_runtime_resume(struct device *dev)
+static __maybe_unused int tegra30_i2s_runtime_resume(struct device *dev)
 {
 	struct tegra30_i2s *i2s = dev_get_drvdata(dev);
 	int ret;
@@ -58,8 +59,18 @@ static int tegra30_i2s_runtime_resume(struct device *dev)
 	}
 
 	regcache_cache_only(i2s->regmap, false);
+	regcache_mark_dirty(i2s->regmap);
+
+	ret = regcache_sync(i2s->regmap);
+	if (ret)
+		goto disable_clocks;
 
 	return 0;
+
+disable_clocks:
+	clk_disable_unprepare(i2s->clk_i2s);
+
+	return ret;
 }
 
 static int tegra30_i2s_set_fmt(struct snd_soc_dai *dai,
@@ -427,7 +438,7 @@ static int tegra30_i2s_platform_probe(struct platform_device *pdev)
 	i2s->playback_i2s_cif = cif_ids[0];
 	i2s->capture_i2s_cif = cif_ids[1];
 
-	i2s->clk_i2s = clk_get(&pdev->dev, NULL);
+	i2s->clk_i2s = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(i2s->clk_i2s)) {
 		dev_err(&pdev->dev, "Can't retrieve i2s clock\n");
 		ret = PTR_ERR(i2s->clk_i2s);
@@ -437,7 +448,7 @@ static int tegra30_i2s_platform_probe(struct platform_device *pdev)
 	regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(regs)) {
 		ret = PTR_ERR(regs);
-		goto err_clk_put;
+		goto err;
 	}
 
 	i2s->regmap = devm_regmap_init_mmio(&pdev->dev, regs,
@@ -445,16 +456,11 @@ static int tegra30_i2s_platform_probe(struct platform_device *pdev)
 	if (IS_ERR(i2s->regmap)) {
 		dev_err(&pdev->dev, "regmap init failed\n");
 		ret = PTR_ERR(i2s->regmap);
-		goto err_clk_put;
+		goto err;
 	}
 	regcache_cache_only(i2s->regmap, true);
 
 	pm_runtime_enable(&pdev->dev);
-	if (!pm_runtime_enabled(&pdev->dev)) {
-		ret = tegra30_i2s_runtime_resume(&pdev->dev);
-		if (ret)
-			goto err_pm_disable;
-	}
 
 	i2s->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
 	i2s->playback_dma_data.maxburst = 4;
@@ -464,7 +470,7 @@ static int tegra30_i2s_platform_probe(struct platform_device *pdev)
 					    &i2s->playback_dma_data.addr);
 	if (ret) {
 		dev_err(&pdev->dev, "Could not alloc TX FIFO: %d\n", ret);
-		goto err_suspend;
+		goto err_pm_disable;
 	}
 	ret = tegra30_ahub_set_rx_cif_source(i2s->playback_i2s_cif,
 					     i2s->playback_fifo_cif);
@@ -518,13 +524,8 @@ err_unroute_tx_fifo:
 	tegra30_ahub_unset_rx_cif_source(i2s->playback_i2s_cif);
 err_free_tx_fifo:
 	tegra30_ahub_free_tx_fifo(i2s->playback_fifo_cif);
-err_suspend:
-	if (!pm_runtime_status_suspended(&pdev->dev))
-		tegra30_i2s_runtime_suspend(&pdev->dev);
 err_pm_disable:
 	pm_runtime_disable(&pdev->dev);
-err_clk_put:
-	clk_put(i2s->clk_i2s);
 err:
 	return ret;
 }
@@ -533,10 +534,6 @@ static int tegra30_i2s_platform_remove(struct platform_device *pdev)
 {
 	struct tegra30_i2s *i2s = dev_get_drvdata(&pdev->dev);
 
-	pm_runtime_disable(&pdev->dev);
-	if (!pm_runtime_status_suspended(&pdev->dev))
-		tegra30_i2s_runtime_suspend(&pdev->dev);
-
 	tegra_pcm_platform_unregister(&pdev->dev);
 	snd_soc_unregister_component(&pdev->dev);
 
@@ -546,42 +543,16 @@ static int tegra30_i2s_platform_remove(struct platform_device *pdev)
 	tegra30_ahub_unset_rx_cif_source(i2s->playback_i2s_cif);
 	tegra30_ahub_free_tx_fifo(i2s->playback_fifo_cif);
 
-	clk_put(i2s->clk_i2s);
-
-	return 0;
-}
-
-#ifdef CONFIG_PM_SLEEP
-static int tegra30_i2s_suspend(struct device *dev)
-{
-	struct tegra30_i2s *i2s = dev_get_drvdata(dev);
-
-	regcache_mark_dirty(i2s->regmap);
+	pm_runtime_disable(&pdev->dev);
 
 	return 0;
 }
 
-static int tegra30_i2s_resume(struct device *dev)
-{
-	struct tegra30_i2s *i2s = dev_get_drvdata(dev);
-	int ret;
-
-	ret = pm_runtime_get_sync(dev);
-	if (ret < 0) {
-		pm_runtime_put(dev);
-		return ret;
-	}
-	ret = regcache_sync(i2s->regmap);
-	pm_runtime_put(dev);
-
-	return ret;
-}
-#endif
-
 static const struct dev_pm_ops tegra30_i2s_pm_ops = {
 	SET_RUNTIME_PM_OPS(tegra30_i2s_runtime_suspend,
 			   tegra30_i2s_runtime_resume, NULL)
-	SET_SYSTEM_SLEEP_PM_OPS(tegra30_i2s_suspend, tegra30_i2s_resume)
+	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+				pm_runtime_force_resume)
 };
 
 static struct platform_driver tegra30_i2s_driver = {