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Commit a512f561 authored by Vinod Koul's avatar Vinod Koul Committed by Takashi Iwai
Browse files

ALSA: hdac: add hdac extended device 



This adds based hdac extended device object which will be used by
ASoC HDAC codecs

Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent ee2d51b3

include/sound/hdaudio_ext.h

+44 −0
Original line number Diff line number Diff line
@@ -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 */

sound/hda/ext/hdac_ext_bus.c

+9 −4
Original line number Diff line number Diff line
@@ -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);