[PATCH] ASoC: rockchip: spdif: Handle clk by pm runtime

[Sugar Zhang]

This patch handle the clk by pm runtime mechanism to simplify
the clk management.

Signed-off-by: Sugar Zhang <sugar.zh...@rock-chips.com>
---

 sound/soc/rockchip/rockchip_spdif.c | 59 +++++++++++--------------------------
 1 file changed, 17 insertions(+), 42 deletions(-)

diff --git a/sound/soc/rockchip/rockchip_spdif.c 
b/sound/soc/rockchip/rockchip_spdif.c
index 6635145..6748108 100644
--- a/sound/soc/rockchip/rockchip_spdif.c
+++ b/sound/soc/rockchip/rockchip_spdif.c
@@ -306,44 +306,22 @@ static int rk_spdif_probe(struct platform_device *pdev)
                return -ENOMEM;
 
        spdif->hclk = devm_clk_get(&pdev->dev, "hclk");
-       if (IS_ERR(spdif->hclk)) {
-               dev_err(&pdev->dev, "Can't retrieve rk_spdif bus clock\n");
+       if (IS_ERR(spdif->hclk))
                return PTR_ERR(spdif->hclk);
-       }
-       ret = clk_prepare_enable(spdif->hclk);
-       if (ret) {
-               dev_err(spdif->dev, "hclock enable failed %d\n", ret);
-               return ret;
-       }
 
        spdif->mclk = devm_clk_get(&pdev->dev, "mclk");
-       if (IS_ERR(spdif->mclk)) {
-               dev_err(&pdev->dev, "Can't retrieve rk_spdif master clock\n");
-               ret = PTR_ERR(spdif->mclk);
-               goto err_disable_hclk;
-       }
-
-       ret = clk_prepare_enable(spdif->mclk);
-       if (ret) {
-               dev_err(spdif->dev, "clock enable failed %d\n", ret);
-               goto err_disable_clocks;
-       }
+       if (IS_ERR(spdif->mclk))
+               return PTR_ERR(spdif->mclk);
 
        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
        regs = devm_ioremap_resource(&pdev->dev, res);
-       if (IS_ERR(regs)) {
-               ret = PTR_ERR(regs);
-               goto err_disable_clocks;
-       }
+       if (IS_ERR(regs))
+               return PTR_ERR(regs);
 
        spdif->regmap = devm_regmap_init_mmio_clk(&pdev->dev, "hclk", regs,
                                                  &rk_spdif_regmap_config);
-       if (IS_ERR(spdif->regmap)) {
-               dev_err(&pdev->dev,
-                       "Failed to initialise managed register map\n");
-               ret = PTR_ERR(spdif->regmap);
-               goto err_disable_clocks;
-       }
+       if (IS_ERR(spdif->regmap))
+               return PTR_ERR(spdif->regmap);
 
        spdif->playback_dma_data.addr = res->start + SPDIF_SMPDR;
        spdif->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
@@ -352,47 +330,44 @@ static int rk_spdif_probe(struct platform_device *pdev)
        spdif->dev = &pdev->dev;
        dev_set_drvdata(&pdev->dev, spdif);
 
-       pm_runtime_set_active(&pdev->dev);
        pm_runtime_enable(&pdev->dev);
-       pm_request_idle(&pdev->dev);
+       if (!pm_runtime_enabled(&pdev->dev)) {
+               ret = rk_spdif_runtime_resume(&pdev->dev);
+               if (ret)
+                       goto err_pm_runtime;
+       }
 
        ret = devm_snd_soc_register_component(&pdev->dev,
                                              &rk_spdif_component,
                                              &rk_spdif_dai, 1);
        if (ret) {
                dev_err(&pdev->dev, "Could not register DAI\n");
-               goto err_pm_runtime;
+               goto err_pm_suspend;
        }
 
        ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
        if (ret) {
                dev_err(&pdev->dev, "Could not register PCM\n");
-               goto err_pm_runtime;
+               goto err_pm_suspend;
        }
 
        return 0;
 
+err_pm_suspend:
+       if (!pm_runtime_status_suspended(&pdev->dev))
+               rk_spdif_runtime_suspend(&pdev->dev);
 err_pm_runtime:
        pm_runtime_disable(&pdev->dev);
-err_disable_clocks:
-       clk_disable_unprepare(spdif->mclk);
-err_disable_hclk:
-       clk_disable_unprepare(spdif->hclk);
 
        return ret;
 }
 
 static int rk_spdif_remove(struct platform_device *pdev)
 {
-       struct rk_spdif_dev *spdif = dev_get_drvdata(&pdev->dev);
-
        pm_runtime_disable(&pdev->dev);
        if (!pm_runtime_status_suspended(&pdev->dev))
                rk_spdif_runtime_suspend(&pdev->dev);
 
-       clk_disable_unprepare(spdif->mclk);
-       clk_disable_unprepare(spdif->hclk);
-
        return 0;
 }
 
-- 
2.7.4