linux-kernel - [PATCH 10/12] ASoC: amd: add vangogh pci driver pm ops

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Date:   Wed, 7 Jul 2021 11:26:21 +0530
From:   Vijendar Mukunda <vijendar.mukunda@....com>
To:     <broonie@...nel.org>, <alsa-devel@...a-project.org>
CC:     <Alexander.Deucher@....com>, <Sunil-kumar.Dommati@....com>,
        "Vijendar Mukunda" <vijendar.mukunda@....com>,
        Vijendar Mukunda <Vijendar.Mukunda@....com>,
        Liam Girdwood <lgirdwood@...il.com>,
        "Jaroslav Kysela" <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
        open list <linux-kernel@...r.kernel.org>
Subject: [PATCH 10/12] ASoC: amd: add vangogh pci driver pm ops

Add Vangogh acp pci driver pm ops.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@....com>
---
 sound/soc/amd/vangogh/pci-acp5x.c | 45 +++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/sound/soc/amd/vangogh/pci-acp5x.c b/sound/soc/amd/vangogh/pci-acp5x.c
index 2779423f7cd3..c95e2212188f 100644
--- a/sound/soc/amd/vangogh/pci-acp5x.c
+++ b/sound/soc/amd/vangogh/pci-acp5x.c
@@ -10,6 +10,7 @@
 #include <linux/delay.h>
 #include <linux/platform_device.h>
 #include <linux/interrupt.h>
+#include <linux/pm_runtime.h>
 
 #include "acp5x.h"
 
@@ -255,6 +256,10 @@ static int snd_acp5x_probe(struct pci_dev *pci,
 	default:
 		dev_info(&pci->dev, "ACP audio mode : %d\n", val);
 	}
+	pm_runtime_set_autosuspend_delay(&pci->dev, 2000);
+	pm_runtime_use_autosuspend(&pci->dev);
+	pm_runtime_put_noidle(&pci->dev);
+	pm_runtime_allow(&pci->dev);
 	return 0;
 
 unregister_devs:
@@ -272,6 +277,41 @@ static int snd_acp5x_probe(struct pci_dev *pci,
 	return ret;
 }
 
+static int snd_acp5x_suspend(struct device *dev)
+{
+	int ret;
+	struct acp5x_dev_data *adata;
+
+	adata = dev_get_drvdata(dev);
+	ret = acp5x_deinit(adata->acp5x_base);
+	if (ret)
+		dev_err(dev, "ACP de-init failed\n");
+	else
+		dev_dbg(dev, "ACP de-initialized\n");
+
+	return ret;
+}
+
+static int snd_acp5x_resume(struct device *dev)
+{
+	int ret;
+	struct acp5x_dev_data *adata;
+
+	adata = dev_get_drvdata(dev);
+	ret = acp5x_init(adata->acp5x_base);
+	if (ret) {
+		dev_err(dev, "ACP init failed\n");
+		return ret;
+	}
+	return 0;
+}
+
+static const struct dev_pm_ops acp5x_pm = {
+	.runtime_suspend = snd_acp5x_suspend,
+	.runtime_resume =  snd_acp5x_resume,
+	.resume =	snd_acp5x_resume,
+};
+
 static void snd_acp5x_remove(struct pci_dev *pci)
 {
 	struct acp5x_dev_data *adata;
@@ -285,6 +325,8 @@ static void snd_acp5x_remove(struct pci_dev *pci)
 	ret = acp5x_deinit(adata->acp5x_base);
 	if (ret)
 		dev_err(&pci->dev, "ACP de-init failed\n");
+	pm_runtime_forbid(&pci->dev);
+	pm_runtime_get_noresume(&pci->dev);
 	pci_release_regions(pci);
 	pci_disable_device(pci);
 }
@@ -302,6 +344,9 @@ static struct pci_driver acp5x_driver  = {
 	.id_table = snd_acp5x_ids,
 	.probe = snd_acp5x_probe,
 	.remove = snd_acp5x_remove,
+	.driver = {
+		.pm = &acp5x_pm,
+	}
 };
 
 module_pci_driver(acp5x_driver);
-- 
2.17.1