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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: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
David Henningsson 2012-09-25 11:30:59 +02:00 committed by Takashi Iwai
parent 0fd0ba5f9e
commit 954df2a968
2 changed files with 39 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
sound/pci/hda/hda_jack.c
View File

@ -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);

9
sound/pci/hda/hda_jack.h
View File

@ -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 */