From 1a4f69d5aaecb39a980fc20b14ec800fd5b53061 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 11 Sep 2014 15:22:46 +0200 Subject: ALSA: hda - Allow multiple callbacks for jack 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 --- sound/pci/hda/hda_jack.h | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) (limited to 'sound/pci/hda/hda_jack.h') diff --git a/sound/pci/hda/hda_jack.h b/sound/pci/hda/hda_jack.h index 668669ce3e52..b41e0a3ea1fb 100644 --- a/sound/pci/hda/hda_jack.h +++ b/sound/pci/hda/hda_jack.h @@ -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); -- cgit v1.2.3-59-g8ed1b