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Commit 954df2a9 authored by David Henningsson's avatar David Henningsson Committed by Takashi Iwai
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ALSA: hda - make a generic unsol event handler 



Moving towards less duplication of code between codecs - this patch
takes some of the common code of unsol event handling and makes it
generic.

Signed-off-by: default avatarDavid Henningsson <david.henningsson@canonical.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 0fd0ba5f

sound/pci/hda/hda_jack.c

+30 −2
Original line number Diff line number Diff line
@@ -192,8 +192,9 @@ EXPORT_SYMBOL_HDA(snd_hda_jack_detect); 
/**

 * snd_hda_jack_detect_enable - enable the jack-detection

 */

int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid,

			       unsigned char action)

int snd_hda_jack_detect_enable_callback(struct hda_codec *codec, hda_nid_t nid,

					unsigned char action,

					hda_jack_callback cb)

{

	struct hda_jack_tbl *jack = snd_hda_jack_tbl_new(codec, nid);

	if (!jack)
@@ -203,10 +204,19 @@ int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid, 
	jack->jack_detect = 1;

	if (action)

		jack->action = action;

	if (cb)

		jack->callback = cb;

	return snd_hda_codec_write_cache(codec, nid, 0,

					 AC_VERB_SET_UNSOLICITED_ENABLE,

					 AC_USRSP_EN | jack->tag);

}

EXPORT_SYMBOL_HDA(snd_hda_jack_detect_enable_callback);



int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid,

			       unsigned char action)

{

	return snd_hda_jack_detect_enable_callback(codec, nid, action, NULL);

}

EXPORT_SYMBOL_HDA(snd_hda_jack_detect_enable);



/**
@@ -411,3 +421,21 @@ int snd_hda_jack_add_kctls(struct hda_codec *codec, 
	return 0;

}

EXPORT_SYMBOL_HDA(snd_hda_jack_add_kctls);



void snd_hda_jack_unsol_event(struct hda_codec *codec, unsigned int res)

{

	struct hda_jack_tbl *event;

	int tag = (res >> AC_UNSOL_RES_TAG_SHIFT) & 0x7f;



	event = snd_hda_jack_tbl_get_from_tag(codec, tag);

	if (!event)

		return;

	event->jack_dirty = 1;



	if (event->callback)

		event->callback(codec, event);



	snd_hda_jack_report_sync(codec);

}

EXPORT_SYMBOL_HDA(snd_hda_jack_unsol_event);

sound/pci/hda/hda_jack.h

+9 −0
Original line number Diff line number Diff line
@@ -13,12 +13,16 @@ 
#define __SOUND_HDA_JACK_H



struct auto_pin_cfg;

struct hda_jack_tbl;



typedef void (*hda_jack_callback) (struct hda_codec *, struct hda_jack_tbl *);



struct hda_jack_tbl {

	hda_nid_t nid;

	unsigned char action;		/* event action (0 = none) */

	unsigned char tag;		/* unsol event tag */

	unsigned int private_data;	/* arbitrary data */

	hda_jack_callback callback;

	/* jack-detection stuff */

	unsigned int pin_sense;		/* cached pin-sense value */

	unsigned int jack_detect:1;	/* capable of jack-detection? */
@@ -61,6 +65,10 @@ void snd_hda_jack_set_dirty_all(struct hda_codec *codec); 


int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid,

			       unsigned char action);

int snd_hda_jack_detect_enable_callback(struct hda_codec *codec, hda_nid_t nid,

					unsigned char action,

					hda_jack_callback cb);





u32 snd_hda_pin_sense(struct hda_codec *codec, hda_nid_t nid);

int snd_hda_jack_detect(struct hda_codec *codec, hda_nid_t nid);
@@ -74,5 +82,6 @@ int snd_hda_jack_add_kctls(struct hda_codec *codec, 


void snd_hda_jack_report_sync(struct hda_codec *codec);



void snd_hda_jack_unsol_event(struct hda_codec *codec, unsigned int res);



#endif /* __SOUND_HDA_JACK_H */