ASoC: amd: acp: add pm ops support for acp pci driver

Add pm ops support for common acp pci driver.

Signed-off-by: Syed Saba Kareem <Syed.SabaKareem@amd.com>
Link: https://lore.kernel.org/r/20230626135515.1252063-6-Syed.SabaKareem@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/amd/acp/acp-pci.c b/sound/soc/amd/acp/acp-pci.c
index 4fedad1b740e563dafe9ab140a97916b0c840675..a32c14a109b77bbfa311472451c268ffc71c41ca 100644 (file)
--- a/sound/soc/amd/acp/acp-pci.c
+++ b/sound/soc/amd/acp/acp-pci.c
@@ -16,6 +16,7 @@
 #include <linux/pci.h>
 #include <linux/platform_device.h>
 #include <linux/module.h>
+#include <linux/pm_runtime.h>
 
 #include "amd.h"
 #include "../mach-config.h"
@@ -141,6 +142,11 @@ static int acp_pci_probe(struct pci_dev *pci, const struct pci_device_id *pci_id
                goto unregister_dmic_dev;
        }
        chip->chip_pdev = pdev;
+       dev_set_drvdata(&pci->dev, chip);
+       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 ret;
 
 unregister_dmic_dev:
@@ -153,12 +159,49 @@ disable_pci:
        return ret;
 };
 
+static int __maybe_unused snd_acp_suspend(struct device *dev)
+{
+       struct acp_chip_info *chip;
+       int ret;
+
+       chip = dev_get_drvdata(dev);
+       ret = acp_deinit(chip->base);
+       if (ret)
+               dev_err(dev, "ACP de-init failed\n");
+       return ret;
+}
+
+static int __maybe_unused snd_acp_resume(struct device *dev)
+{
+       struct acp_chip_info *chip;
+       struct acp_dev_data *adata;
+       struct device child;
+       int ret;
+
+       chip = dev_get_drvdata(dev);
+       ret = acp_init(chip);
+       if (ret)
+               dev_err(dev, "ACP init failed\n");
+       child = chip->chip_pdev->dev;
+       adata = dev_get_drvdata(&child);
+       if (adata)
+               acp_enable_interrupts(adata);
+       return ret;
+}
+
+static const struct dev_pm_ops acp_pm_ops = {
+       SET_RUNTIME_PM_OPS(snd_acp_suspend, snd_acp_resume, NULL)
+       SET_SYSTEM_SLEEP_PM_OPS(snd_acp_suspend, snd_acp_resume)
+};
+
 static void acp_pci_remove(struct pci_dev *pci)
 {
        struct acp_chip_info *chip;
        int ret;
 
        chip = pci_get_drvdata(pci);
+       pm_runtime_forbid(&pci->dev);
+       pm_runtime_get_noresume(&pci->dev);
        if (dmic_dev)
                platform_device_unregister(dmic_dev);
        if (pdev)
@@ -181,6 +224,9 @@ static struct pci_driver snd_amd_acp_pci_driver = {
        .id_table = acp_pci_ids,
        .probe = acp_pci_probe,
        .remove = acp_pci_remove,
+       .driver = {
+               .pm = &acp_pm_ops,
+       },
 };
 module_pci_driver(snd_amd_acp_pci_driver);