diff options
| -rw-r--r-- | sound/soc/fsl/fsl_spdif.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/sound/soc/fsl/fsl_spdif.c b/sound/soc/fsl/fsl_spdif.c index 5d350689c2fb..c2dcf385dbdb 100644 --- a/sound/soc/fsl/fsl_spdif.c +++ b/sound/soc/fsl/fsl_spdif.c @@ -16,6 +16,7 @@ #include <linux/of_device.h> #include <linux/of_irq.h> #include <linux/regmap.h> +#include <linux/pm_runtime.h> #include <sound/asoundef.h> #include <sound/dmaengine_pcm.h> @@ -1443,6 +1444,32 @@ static int fsl_spdif_probe(struct platform_device *pdev) return ret; } +#ifdef CONFIG_PM +static int fsl_spdif_runtime_resume(struct device *dev) +{ + struct fsl_spdif_priv *spdif_priv = dev_get_drvdata(dev); + + regcache_cache_only(spdif_priv->regmap, false); + regcache_mark_dirty(spdif_priv->regmap); + + regmap_update_bits(spdif_priv->regmap, REG_SPDIF_SRPC, + SRPC_CLKSRC_SEL_MASK | SRPC_GAINSEL_MASK, + spdif_priv->regcache_srpc); + + return regcache_sync(spdif_priv->regmap); +} + +static int fsl_spdif_runtime_suspend(struct device *dev) +{ + struct fsl_spdif_priv *spdif_priv = dev_get_drvdata(dev); + + regmap_read(spdif_priv->regmap, REG_SPDIF_SRPC, + &spdif_priv->regcache_srpc); + regcache_cache_only(spdif_priv->regmap, true); + return 0; +} +#endif + #ifdef CONFIG_PM_SLEEP static int fsl_spdif_suspend(struct device *dev) { @@ -1470,6 +1497,8 @@ static int fsl_spdif_resume(struct device *dev) static const struct dev_pm_ops fsl_spdif_pm = { SET_SYSTEM_SLEEP_PM_OPS(fsl_spdif_suspend, fsl_spdif_resume) + SET_RUNTIME_PM_OPS(fsl_spdif_runtime_suspend, fsl_spdif_runtime_resume, + NULL) }; static struct platform_driver fsl_spdif_driver = { |