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ASoC: img-spdif-out: Add control of sys clock to runtime PM 

Disable sys clock as well as ref clock when runtime suspended.

Signed-off-by: Ed Blake <ed.blake@sondrel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
hifive-unleashed-5.1
Ed Blake 2017-10-06 15:56:07 +01:00 committed by Mark Brown
parent 634a09d037
commit e8639d0c65
1 changed files with 17 additions and 14 deletions
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31
sound/soc/img/img-spdif-out.c
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@ -57,6 +57,7 @@ static int img_spdif_out_runtime_suspend(struct device *dev)
struct img_spdif_out *spdif = dev_get_drvdata(dev);
clk_disable_unprepare(spdif->clk_ref);
clk_disable_unprepare(spdif->clk_sys);
return 0;
}
@ -66,9 +67,16 @@ static int img_spdif_out_runtime_resume(struct device *dev)
struct img_spdif_out *spdif = dev_get_drvdata(dev);
int ret;
ret = clk_prepare_enable(spdif->clk_sys);
if (ret) {
dev_err(dev, "clk_enable failed: %d\n", ret);
return ret;
}
ret = clk_prepare_enable(spdif->clk_ref);
if (ret) {
dev_err(dev, "clk_enable failed: %d\n", ret);
clk_disable_unprepare(spdif->clk_sys);
return ret;
}
@ -358,21 +366,21 @@ static int img_spdif_out_probe(struct platform_device *pdev)
return PTR_ERR(spdif->clk_ref);
}
ret = clk_prepare_enable(spdif->clk_sys);
if (ret)
return ret;
img_spdif_out_writel(spdif, IMG_SPDIF_OUT_CTL_FS_MASK,
IMG_SPDIF_OUT_CTL);
img_spdif_out_reset(spdif);
pm_runtime_enable(&pdev->dev);
if (!pm_runtime_enabled(&pdev->dev)) {
ret = img_spdif_out_runtime_resume(&pdev->dev);
if (ret)
goto err_pm_disable;
}
ret = pm_runtime_get_sync(&pdev->dev);
if (ret < 0)
goto err_suspend;
img_spdif_out_writel(spdif, IMG_SPDIF_OUT_CTL_FS_MASK,
IMG_SPDIF_OUT_CTL);
img_spdif_out_reset(spdif);
pm_runtime_put(&pdev->dev);
spin_lock_init(&spdif->lock);
@ -399,21 +407,16 @@ err_suspend:
img_spdif_out_runtime_suspend(&pdev->dev);
err_pm_disable:
pm_runtime_disable(&pdev->dev);
clk_disable_unprepare(spdif->clk_sys);
return ret;
}
static int img_spdif_out_dev_remove(struct platform_device *pdev)
{
struct img_spdif_out *spdif = platform_get_drvdata(pdev);
pm_runtime_disable(&pdev->dev);
if (!pm_runtime_status_suspended(&pdev->dev))
img_spdif_out_runtime_suspend(&pdev->dev);
clk_disable_unprepare(spdif->clk_sys);
return 0;
}