ASoC: amd: add acp6x pci driver pm ops

Add acp6x pci driver pm ops.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20211018112044.1705805-9-Vijendar.Mukunda@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/amd/yc/acp6x.h b/sound/soc/amd/yc/acp6x.h
index 3f83de2..b0d3f6a 100644 (file)
--- a/sound/soc/amd/yc/acp6x.h
+++ b/sound/soc/amd/yc/acp6x.h
@@ -52,6 +52,9 @@
 #define MAX_BUFFER (CAPTURE_MAX_PERIOD_SIZE * CAPTURE_MAX_NUM_PERIODS)
 #define MIN_BUFFER MAX_BUFFER
 
+/* time in ms for runtime suspend delay */
+#define ACP_SUSPEND_DELAY_MS   2000
+
 enum acp_config {
        ACP_CONFIG_0 = 0,
        ACP_CONFIG_1,

diff --git a/sound/soc/amd/yc/pci-acp6x.c b/sound/soc/amd/yc/pci-acp6x.c
index baf875c..cf02c54 100644 (file)
--- a/sound/soc/amd/yc/pci-acp6x.c
+++ b/sound/soc/amd/yc/pci-acp6x.c
@@ -12,6 +12,7 @@
 #include <linux/platform_device.h>
 #include <linux/interrupt.h>
 #include <sound/pcm_params.h>
+#include <linux/pm_runtime.h>
 
 #include "acp6x.h"
 
@@ -240,6 +241,11 @@ static int snd_acp6x_probe(struct pci_dev *pci,
                dev_err(&pci->dev, "ACP PCI IRQ request failed\n");
                goto unregister_devs;
        }
+       pm_runtime_set_autosuspend_delay(&pci->dev, ACP_SUSPEND_DELAY_MS);
+       pm_runtime_use_autosuspend(&pci->dev);
+       pm_runtime_put_noidle(&pci->dev);
+       pm_runtime_allow(&pci->dev);
+
        return 0;
 unregister_devs:
        for (--index; index >= 0; index--)
@@ -255,6 +261,35 @@ disable_pci:
        return ret;
 }
 
+static int __maybe_unused snd_acp6x_suspend(struct device *dev)
+{
+       struct acp6x_dev_data *adata;
+       int ret;
+
+       adata = dev_get_drvdata(dev);
+       ret = acp6x_deinit(adata->acp6x_base);
+       if (ret)
+               dev_err(dev, "ACP de-init failed\n");
+       return ret;
+}
+
+static int __maybe_unused snd_acp6x_resume(struct device *dev)
+{
+       struct acp6x_dev_data *adata;
+       int ret;
+
+       adata = dev_get_drvdata(dev);
+       ret = acp6x_init(adata->acp6x_base);
+       if (ret)
+               dev_err(dev, "ACP init failed\n");
+       return ret;
+}
+
+static const struct dev_pm_ops acp6x_pm = {
+       SET_RUNTIME_PM_OPS(snd_acp6x_suspend, snd_acp6x_resume, NULL)
+       SET_SYSTEM_SLEEP_PM_OPS(snd_acp6x_suspend, snd_acp6x_resume)
+};
+
 static void snd_acp6x_remove(struct pci_dev *pci)
 {
        struct acp6x_dev_data *adata;
@@ -268,6 +303,8 @@ static void snd_acp6x_remove(struct pci_dev *pci)
        ret = acp6x_deinit(adata->acp6x_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);
 }
@@ -285,6 +322,9 @@ static struct pci_driver yc_acp6x_driver  = {
        .id_table = snd_acp6x_ids,
        .probe = snd_acp6x_probe,
        .remove = snd_acp6x_remove,
+       .driver = {
+               .pm = &acp6x_pm,
+       }
 };
 
 module_pci_driver(yc_acp6x_driver);