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ALSA: hda - Allow multiple callbacks for jack

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So far, hda_jack infrastructure allows only one callback per jack, and
this makes things slightly complicated when a driver wants to assign
multiple tasks to a jack, e.g. the standard auto-mute with a power
up/down sequence.  This can be simplified if the hda_jack accepts
multiple callbacks.

This patch is such an extension: the callback-specific part (the
function and private_data) is split to another struct from
hda_jack_tbl, and multiple such objects can be assigned to a single
hda_jack_tbl entry.

The new struct hda_jack_callback is passed to each callback function
now, thus the patch became bigger than expected.  But these changes
are mostly trivial.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
2014-09-11 15:22:46 +02:00
parent bda17b82bf
commit 1a4f69d5aa
10 changed files with 107 additions and 65 deletions
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17
sound/pci/hda/hda_jack.h
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@@ -14,14 +14,21 @@
struct auto_pin_cfg;
struct hda_jack_tbl;
struct hda_jack_callback;
typedef void (*hda_jack_callback) (struct hda_codec *, struct hda_jack_tbl *);
typedef void (*hda_jack_callback_fn) (struct hda_codec *, struct hda_jack_callback *);
struct hda_jack_callback {
struct hda_jack_tbl *tbl;
hda_jack_callback_fn func;
unsigned int private_data; /* arbitrary data */
struct hda_jack_callback *next;
};
struct hda_jack_tbl {
hda_nid_t nid;
unsigned char tag; /* unsol event tag */
unsigned int private_data; /* arbitrary data */
hda_jack_callback callback;
struct hda_jack_callback *callback;
/* jack-detection stuff */
unsigned int pin_sense; /* cached pin-sense value */
unsigned int jack_detect:1; /* capable of jack-detection? */
@@ -47,9 +54,9 @@ void snd_hda_jack_tbl_clear(struct hda_codec *codec);
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);
struct hda_jack_tbl *
struct hda_jack_callback *
snd_hda_jack_detect_enable_callback(struct hda_codec *codec, hda_nid_t nid,
hda_jack_callback cb);
hda_jack_callback_fn cb);
int snd_hda_jack_set_gating_jack(struct hda_codec *codec, hda_nid_t gated_nid,
hda_nid_t gating_nid);