linux-kernel - [PATCH v2 3/3] ASoC: stm32: spdifrx: add pm

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Message-ID: <20211119104752.13564-4-olivier.moysan@foss.st.com>
Date:   Fri, 19 Nov 2021 11:47:52 +0100
From:   Olivier Moysan <olivier.moysan@...s.st.com>
To:     Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Arnaud Pouliquen <arnaud.pouliquen@...s.st.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Olivier Moysan <olivier.moysan@...s.st.com>,
        Takashi Iwai <tiwai@...e.com>
CC:     <alsa-devel@...a-project.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>
Subject: [PATCH v2 3/3] ASoC: stm32: spdifrx: add pm_runtime support

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

Signed-off-by: Olivier Moysan <olivier.moysan@...s.st.com>
---
 sound/soc/stm/stm32_spdifrx.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sound/soc/stm/stm32_spdifrx.c b/sound/soc/stm/stm32_spdifrx.c
index 48145f553588..a9ccdc2c5867 100644
--- a/sound/soc/stm/stm32_spdifrx.c
+++ b/sound/soc/stm/stm32_spdifrx.c
@@ -12,6 +12,7 @@
 #include <linux/delay.h>
 #include <linux/module.h>
 #include <linux/of_platform.h>
+#include <linux/pm_runtime.h>
 #include <linux/regmap.h>
 #include <linux/reset.h>
 
@@ -955,6 +956,7 @@ static int stm32_spdifrx_remove(struct platform_device *pdev)
 
 	snd_dmaengine_pcm_unregister(&pdev->dev);
 	snd_soc_unregister_component(&pdev->dev);
+	pm_runtime_disable(&pdev->dev);
 
 	return 0;
 }
@@ -1010,6 +1012,8 @@ static int stm32_spdifrx_probe(struct platform_device *pdev)
 	udelay(2);
 	reset_control_deassert(rst);
 
+	pm_runtime_enable(&pdev->dev);
+
 	pcm_config = &stm32_spdifrx_pcm_config;
 	ret = snd_dmaengine_pcm_register(&pdev->dev, pcm_config, 0);
 	if (ret) {
-- 
2.17.1