ALSA: hda: hda_component: Move codec field into the parent

There is one codec shared across all of the bound HDA components and a
copy is usually stashed in the amp driver so it doesn't need to be in
every hda_component.
Signed-off-by: Simon Trimmer <simont@opensource.cirrus.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/20240617154105.108635-4-simont@opensource.cirrus.com

sound/pci/hda/cs35l41_hda.c

@@ -1436,10 +1436,11 @@ static int cs35l41_hda_bind(struct device *dev, struct device *master, void *mas
 	mutex_lock(&cs35l41->fw_mutex);
 
 	comp->dev = dev;
+	cs35l41->codec = parent->codec;
 	if (!cs35l41->acpi_subsystem_id)
 		cs35l41->acpi_subsystem_id = kasprintf(GFP_KERNEL, "%.8x",
-						       comp->codec->core.subsystem_id);
-	cs35l41->codec = comp->codec;
+						       cs35l41->codec->core.subsystem_id);
+
 	strscpy(comp->name, dev_name(dev), sizeof(comp->name));
 
 	cs35l41->firmware_type = HDA_CS_DSP_FW_SPK_PROT;
@@ -1470,7 +1471,7 @@ static int cs35l41_hda_bind(struct device *dev, struct device *master, void *mas
 	mutex_unlock(&cs35l41->fw_mutex);
 
 	sleep_flags = lock_system_sleep();
-	if (!device_link_add(&comp->codec->core.dev, cs35l41->dev, DL_FLAG_STATELESS))
+	if (!device_link_add(&cs35l41->codec->core.dev, cs35l41->dev, DL_FLAG_STATELESS))
 		dev_warn(dev, "Unable to create device link\n");
 	unlock_system_sleep(sleep_flags);
 

sound/pci/hda/cs35l56_hda.c

@@ -697,7 +697,7 @@ static int cs35l56_hda_bind(struct device *dev, struct device *master, void *mas
 		return -EBUSY;
 
 	comp->dev = dev;
-	cs35l56->codec = comp->codec;
+	cs35l56->codec = parent->codec;
 	strscpy(comp->name, dev_name(dev), sizeof(comp->name));
 	comp->playback_hook = cs35l56_hda_playback_hook;
 

sound/pci/hda/hda_component.c

@@ -134,12 +134,9 @@ static int hda_comp_match_dev_name(struct device *dev, void *data)
 int hda_component_manager_bind(struct hda_codec *cdc,
 			       struct hda_component_parent *parent)
 {
-	int i;
-
 	/* Init shared and component specific data */
 	memset(parent, 0, sizeof(*parent));
-	for (i = 0; i < ARRAY_SIZE(parent->comps); i++)
-		parent->comps[i].codec = cdc;
+	parent->codec = cdc;
 
 	return component_bind_all(hda_codec_dev(cdc), parent);
 }

sound/pci/hda/hda_component.h

@@ -19,7 +19,6 @@
 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);
@@ -29,6 +28,7 @@ struct hda_component {
 };
 
 struct hda_component_parent {
+	struct hda_codec *codec;
 	struct hda_component comps[HDA_MAX_COMPONENTS];
 };
 

sound/pci/hda/tas2781_hda_i2c.c

@@ -719,7 +719,7 @@ static int tas2781_hda_bind(struct device *dev, struct device *master,
 	if (comp->dev)
 		return -EBUSY;
 
-	codec = comp->codec;
+	codec = parent->codec;
 	subid = codec->core.subsystem_id >> 16;
 
 	switch (subid) {