Add power management support.
Signed-off-by: Rakesh Ughreja <rakesh.a.ughreja@xxxxxxxxx>
---
sound/soc/codecs/hdac_hda.c | 49 +++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 49 insertions(+)
diff --git a/sound/soc/codecs/hdac_hda.c b/sound/soc/codecs/hdac_hda.c
index 4b4d80c..22cabd4 100644
--- a/sound/soc/codecs/hdac_hda.c
+++ b/sound/soc/codecs/hdac_hda.c
@@ -546,8 +546,57 @@ static int hdac_hda_dev_remove(struct hdac_device *hdev)
return 0;
}
+#ifdef CONFIG_PM
+static int hdac_hda_runtime_suspend(struct device *dev)
+{
+ struct hdac_device *hdac = dev_to_hdac_dev(dev);
+ struct hdac_bus *bus = hdac->bus;
+ struct hdac_ext_link *hlink = NULL;
+
+ dev_dbg(dev, "%s: entry\n", __func__);
+
+ dev_dbg(dev, "calling legacy codec suspend\n");
+ hda_codec_runtime_suspend(dev);
+ dev_dbg(dev, "legacy codec suspended\n");
+
+ hlink = snd_hdac_ext_bus_get_link(bus, dev_name(dev));
+ if (!hlink) {
+ dev_err(dev, "hdac link not found\n");
+ return -EIO;
+ }
+ snd_hdac_ext_bus_link_put(bus, hlink);
+ return 0;
+}
+
+static int hdac_hda_runtime_resume(struct device *dev)
+{
+ struct hdac_device *hdac = dev_to_hdac_dev(dev);
+ struct hdac_bus *bus = hdac->bus;
+ struct hdac_ext_link *hlink = NULL;
+
+ dev_dbg(dev, "%s: entry\n", __func__);
+
+ /* controller may not have been initialized for the first time */
+ if (!bus)
+ return 0;
+
+ hlink = snd_hdac_ext_bus_get_link(bus, dev_name(dev));
+ if (!hlink) {
+ dev_err(dev, "hdac link not found\n");
+ return -EIO;
+ }
+ snd_hdac_ext_bus_link_get(bus, hlink);
+
+ dev_dbg(dev, "calling legacy codec resume\n");
+ hda_codec_runtime_resume(dev);
+ dev_dbg(dev, "%s: exit\n", __func__);
+
+ return 0;
+}
+#else
#define hdac_hda_runtime_suspend NULL
#define hdac_hda_runtime_resume NULL
+#endif
static const struct dev_pm_ops hdac_hda_pm = {
SET_RUNTIME_PM_OPS(hdac_hda_runtime_suspend,
--
2.7.4
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