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path: root/sound/soc/img/img-spdif-out.c
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Diffstat (limited to 'sound/soc/img/img-spdif-out.c')
-rw-r--r--sound/soc/img/img-spdif-out.c87
1 files changed, 67 insertions, 20 deletions
diff --git a/sound/soc/img/img-spdif-out.c b/sound/soc/img/img-spdif-out.c
index 383655da2e60..934ed3df2ebf 100644
--- a/sound/soc/img/img-spdif-out.c
+++ b/sound/soc/img/img-spdif-out.c
@@ -47,25 +47,36 @@ struct img_spdif_out {
struct snd_dmaengine_dai_dma_data dma_data;
struct device *dev;
struct reset_control *rst;
+ u32 suspend_ctl;
+ u32 suspend_csl;
+ u32 suspend_csh;
};
-static int img_spdif_out_suspend(struct device *dev)
+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;
}
-static int img_spdif_out_resume(struct device *dev)
+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;
}
@@ -355,21 +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_resume(&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);
@@ -393,27 +404,62 @@ static int img_spdif_out_probe(struct platform_device *pdev)
err_suspend:
if (!pm_runtime_status_suspended(&pdev->dev))
- img_spdif_out_suspend(&pdev->dev);
+ 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_suspend(&pdev->dev);
+ img_spdif_out_runtime_suspend(&pdev->dev);
- clk_disable_unprepare(spdif->clk_sys);
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int img_spdif_out_suspend(struct device *dev)
+{
+ struct img_spdif_out *spdif = dev_get_drvdata(dev);
+ int ret;
+
+ if (pm_runtime_status_suspended(dev)) {
+ ret = img_spdif_out_runtime_resume(dev);
+ if (ret)
+ return ret;
+ }
+
+ spdif->suspend_ctl = img_spdif_out_readl(spdif, IMG_SPDIF_OUT_CTL);
+ spdif->suspend_csl = img_spdif_out_readl(spdif, IMG_SPDIF_OUT_CSL);
+ spdif->suspend_csh = img_spdif_out_readl(spdif, IMG_SPDIF_OUT_CSH_UV);
+
+ img_spdif_out_runtime_suspend(dev);
return 0;
}
+static int img_spdif_out_resume(struct device *dev)
+{
+ struct img_spdif_out *spdif = dev_get_drvdata(dev);
+ int ret;
+
+ ret = img_spdif_out_runtime_resume(dev);
+ if (ret)
+ return ret;
+
+ img_spdif_out_writel(spdif, spdif->suspend_ctl, IMG_SPDIF_OUT_CTL);
+ img_spdif_out_writel(spdif, spdif->suspend_csl, IMG_SPDIF_OUT_CSL);
+ img_spdif_out_writel(spdif, spdif->suspend_csh, IMG_SPDIF_OUT_CSH_UV);
+
+ if (pm_runtime_status_suspended(dev))
+ img_spdif_out_runtime_suspend(dev);
+
+ return 0;
+}
+#endif
static const struct of_device_id img_spdif_out_of_match[] = {
{ .compatible = "img,spdif-out" },
{}
@@ -421,8 +467,9 @@ static const struct of_device_id img_spdif_out_of_match[] = {
MODULE_DEVICE_TABLE(of, img_spdif_out_of_match);
static const struct dev_pm_ops img_spdif_out_pm_ops = {
- SET_RUNTIME_PM_OPS(img_spdif_out_suspend,
- img_spdif_out_resume, NULL)
+ SET_RUNTIME_PM_OPS(img_spdif_out_runtime_suspend,
+ img_spdif_out_runtime_resume, NULL)
+ SET_SYSTEM_SLEEP_PM_OPS(img_spdif_out_suspend, img_spdif_out_resume)
};
static struct platform_driver img_spdif_out_driver = {