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[v5,1/4] ALSA: hda: cs35l41: Add notification support into component binding

Message ID 20230921162849.1988124-2-sbinding@opensource.cirrus.com
State Accepted
Commit 502629a75566b5cb409c118125d38102e5edc8f6
Headers show
Series Support mute notifications for CS35L41 HDA | expand

Commit Message

Stefan Binding Sept. 21, 2023, 4:28 p.m. UTC 
Some systems support a notification from ACPI, which can be used
for different things.

Only one handler can be registered for the acpi notification, but all
amps need to receive that notification, we can register a single handler
inside the component master, so that it can then notify through the
component framework.

This is required to support mute notifications from ACPI.

Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com>
---
 sound/pci/hda/hda_component.h | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/sound/pci/hda/hda_component.h b/sound/pci/hda/hda_component.h
index f170aec967c1..bbd6f0ed16c1 100644
--- a/sound/pci/hda/hda_component.h
+++ b/sound/pci/hda/hda_component.h
@@ -6,6 +6,7 @@ 
  *                    Cirrus Logic International Semiconductor Ltd.
  */
 
+#include <linux/acpi.h>
 #include <linux/component.h>
 
 #define HDA_MAX_COMPONENTS	4
@@ -15,6 +16,9 @@  struct hda_component {
 	struct device *dev;
 	char name[HDA_MAX_NAME_SIZE];
 	struct hda_codec *codec;
+	struct acpi_device *adev;
+	bool acpi_notifications_supported;
+	void (*acpi_notify)(acpi_handle handle, u32 event, struct device *dev);
 	void (*pre_playback_hook)(struct device *dev, int action);
 	void (*playback_hook)(struct device *dev, int action);
 	void (*post_playback_hook)(struct device *dev, int action);