ASoC: stm32: i2s: add pm_runtime support

Enable support of pm_runtime on STM32 I2S driver to allow
I2S power state monitoring.

Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com>
Link: https://lore.kernel.org/r/20211119104752.13564-2-olivier.moysan@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/stm/stm32_i2s.c b/sound/soc/stm/stm32_i2s.c
index 6254bacad6eb7673aa0b90f57077790175705457..68c5de040df82eb0482d0cb3dcd2b564f41f9df3 100644 (file)
--- a/sound/soc/stm/stm32_i2s.c
+++ b/sound/soc/stm/stm32_i2s.c
@@ -13,6 +13,7 @@
 #include <linux/module.h>
 #include <linux/of_irq.h>
 #include <linux/of_platform.h>
+#include <linux/pm_runtime.h>
 #include <linux/regmap.h>
 #include <linux/reset.h>
 #include <linux/spinlock.h>
@@ -1113,6 +1114,7 @@ static int stm32_i2s_remove(struct platform_device *pdev)
 {
        snd_dmaengine_pcm_unregister(&pdev->dev);
        snd_soc_unregister_component(&pdev->dev);
+       pm_runtime_disable(&pdev->dev);
 
        return 0;
 }
@@ -1150,6 +1152,8 @@ static int stm32_i2s_probe(struct platform_device *pdev)
                return PTR_ERR(i2s->regmap);
        }
 
+       pm_runtime_enable(&pdev->dev);
+
        ret = snd_dmaengine_pcm_register(&pdev->dev, &stm32_i2s_pcm_config, 0);
        if (ret) {
                if (ret != -EPROBE_DEFER)