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authorVinod Koul <vinod.koul@intel.com>2015-08-21 12:17:41 +0200
committerTakashi Iwai <tiwai@suse.de>2015-08-21 12:34:01 +0200
commita512f5611646ab12f3f8fea2a3d2582adabe5157 (patch)
tree505302b62077570bfea0856da32ac4867bb67c93
parentALSA: hdac: Add API for removing hdac extended device (diff)
downloadlinux-a512f5611646ab12f3f8fea2a3d2582adabe5157.tar.xz
linux-a512f5611646ab12f3f8fea2a3d2582adabe5157.zip
ALSA: hdac: add hdac extended device
This adds based hdac extended device object which will be used by ASoC HDAC codecs Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
-rw-r--r--include/sound/hdaudio_ext.h44
-rw-r--r--sound/hda/ext/hdac_ext_bus.c13
2 files changed, 53 insertions, 4 deletions
diff --git a/include/sound/hdaudio_ext.h b/include/sound/hdaudio_ext.h
index 148267b76ab7..0641d00e2a94 100644
--- a/include/sound/hdaudio_ext.h
+++ b/include/sound/hdaudio_ext.h
@@ -130,4 +130,48 @@ void snd_hdac_ext_link_clear_stream_id(struct hdac_ext_link *link,
writew(((readw(addr + reg) & ~(mask)) | (val)), \
addr + reg)
+
+struct hdac_ext_device;
+
+/* ops common to all codec drivers */
+struct hdac_ext_codec_ops {
+ int (*build_controls)(struct hdac_ext_device *dev);
+ int (*init)(struct hdac_ext_device *dev);
+ void (*free)(struct hdac_ext_device *dev);
+};
+
+struct hda_dai_map {
+ char *dai_name;
+ hda_nid_t nid;
+ u32 maxbps;
+};
+
+#define HDA_MAX_NIDS 16
+
+/**
+ * struct hdac_ext_device - HDAC Ext device
+ *
+ * @hdac: hdac core device
+ * @nid_list - the dai map which matches the dai-name with the nid
+ * @map_cur_idx - the idx in use in dai_map
+ * @ops - the hda codec ops common to all codec drivers
+ * @pvt_data - private data, for asoc contains asoc codec object
+ */
+struct hdac_ext_device {
+ struct hdac_device hdac;
+ struct hdac_ext_bus *ebus;
+
+ /* soc-dai to nid map */
+ struct hda_dai_map nid_list[HDA_MAX_NIDS];
+ unsigned int map_cur_idx;
+
+ /* codec ops */
+ struct hdac_ext_codec_ops ops;
+
+ void *private_data;
+};
+
+#define to_ehdac_device(dev) (container_of((dev), \
+ struct hdac_ext_device, hdac))
+
#endif /* __SOUND_HDAUDIO_EXT_H */
diff --git a/sound/hda/ext/hdac_ext_bus.c b/sound/hda/ext/hdac_ext_bus.c
index cf69202f7da0..94fb9878f5cb 100644
--- a/sound/hda/ext/hdac_ext_bus.c
+++ b/sound/hda/ext/hdac_ext_bus.c
@@ -125,7 +125,7 @@ static void default_release(struct device *dev)
}
/**
- * snd_hdac_ext_device_init - initialize the HDA extended codec base device
+ * snd_hdac_ext_bus_device_init - initialize the HDA extended codec base device
* @ebus: hdac extended bus to attach to
* @addr: codec address
*
@@ -133,14 +133,16 @@ static void default_release(struct device *dev)
*/
int snd_hdac_ext_bus_device_init(struct hdac_ext_bus *ebus, int addr)
{
+ struct hdac_ext_device *edev;
struct hdac_device *hdev = NULL;
struct hdac_bus *bus = ebus_to_hbus(ebus);
char name[15];
int ret;
- hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
- if (!hdev)
+ edev = kzalloc(sizeof(*hdev), GFP_KERNEL);
+ if (!edev)
return -ENOMEM;
+ hdev = &edev->hdac;
snprintf(name, sizeof(name), "ehdaudio%dD%d", ebus->idx, addr);
@@ -158,6 +160,7 @@ int snd_hdac_ext_bus_device_init(struct hdac_ext_bus *ebus, int addr)
snd_hdac_ext_bus_device_exit(hdev);
return ret;
}
+
return 0;
}
EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_device_init);
@@ -168,8 +171,10 @@ EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_device_init);
*/
void snd_hdac_ext_bus_device_exit(struct hdac_device *hdev)
{
+ struct hdac_ext_device *edev = to_ehdac_device(hdev);
+
snd_hdac_device_exit(hdev);
- kfree(hdev);
+ kfree(edev);
}
EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_device_exit);