diff options
| -rw-r--r-- | include/sound/jack.h | 8 | ||||
| -rw-r--r-- | sound/core/jack.c | 71 |
2 files changed, 73 insertions, 6 deletions
diff --git a/include/sound/jack.h b/include/sound/jack.h index f236e426a70..d90b9fa3270 100644 --- a/include/sound/jack.h +++ b/include/sound/jack.h @@ -42,6 +42,11 @@ enum snd_jack_types { SND_JACK_MECHANICAL = 0x0008, /* If detected separately */ SND_JACK_VIDEOOUT = 0x0010, SND_JACK_AVOUT = SND_JACK_LINEOUT | SND_JACK_VIDEOOUT, + + /* Kept separate from switches to facilitate implementation */ + SND_JACK_BTN_0 = 0x4000, + SND_JACK_BTN_1 = 0x2000, + SND_JACK_BTN_2 = 0x1000, }; struct snd_jack { @@ -50,6 +55,7 @@ struct snd_jack { int type; const char *id; char name[100]; + unsigned int key[3]; /* Keep in sync with definitions above */ void *private_data; void (*private_free)(struct snd_jack *); }; @@ -59,6 +65,8 @@ struct snd_jack { int snd_jack_new(struct snd_card *card, const char *id, int type, struct snd_jack **jack); void snd_jack_set_parent(struct snd_jack *jack, struct device *parent); +int snd_jack_set_key(struct snd_jack *jack, enum snd_jack_types type, + int keytype); void snd_jack_report(struct snd_jack *jack, int status); diff --git a/sound/core/jack.c b/sound/core/jack.c index f705eec7372..3813e7b04d0 100644 --- a/sound/core/jack.c +++ b/sound/core/jack.c @@ -23,7 +23,7 @@ #include <sound/jack.h> #include <sound/core.h> -static int jack_types[] = { +static int jack_switch_types[] = { SW_HEADPHONE_INSERT, SW_MICROPHONE_INSERT, SW_LINEOUT_INSERT, @@ -55,7 +55,7 @@ static int snd_jack_dev_register(struct snd_device *device) { struct snd_jack *jack = device->device_data; struct snd_card *card = device->card; - int err; + int err, i; snprintf(jack->name, sizeof(jack->name), "%s %s", card->shortname, jack->id); @@ -65,6 +65,19 @@ static int snd_jack_dev_register(struct snd_device *device) if (!jack->input_dev->dev.parent) jack->input_dev->dev.parent = snd_card_get_device_link(card); + /* Add capabilities for any keys that are enabled */ + for (i = 0; i < ARRAY_SIZE(jack->key); i++) { + int testbit = SND_JACK_BTN_0 >> i; + + if (!(jack->type & testbit)) + continue; + + if (!jack->key[i]) + jack->key[i] = BTN_0 + i; + + input_set_capability(jack->input_dev, EV_KEY, jack->key[i]); + } + err = input_register_device(jack->input_dev); if (err == 0) jack->registered = 1; @@ -112,10 +125,10 @@ int snd_jack_new(struct snd_card *card, const char *id, int type, jack->type = type; - for (i = 0; i < ARRAY_SIZE(jack_types); i++) + for (i = 0; i < ARRAY_SIZE(jack_switch_types); i++) if (type & (1 << i)) input_set_capability(jack->input_dev, EV_SW, - jack_types[i]); + jack_switch_types[i]); err = snd_device_new(card, SNDRV_DEV_JACK, jack, &ops); if (err < 0) @@ -151,6 +164,43 @@ void snd_jack_set_parent(struct snd_jack *jack, struct device *parent) EXPORT_SYMBOL(snd_jack_set_parent); /** + * snd_jack_set_key - Set a key mapping on a jack + * + * @jack: The jack to configure + * @type: Jack report type for this key + * @keytype: Input layer key type to be reported + * + * Map a SND_JACK_BTN_ button type to an input layer key, allowing + * reporting of keys on accessories via the jack abstraction. If no + * mapping is provided but keys are enabled in the jack type then + * BTN_n numeric buttons will be reported. + * + * Note that this is intended to be use by simple devices with small + * numbers of keys that can be reported. It is also possible to + * access the input device directly - devices with complex input + * capabilities on accessories should consider doing this rather than + * using this abstraction. + * + * This function may only be called prior to registration of the jack. + */ +int snd_jack_set_key(struct snd_jack *jack, enum snd_jack_types type, + int keytype) +{ + int key = fls(SND_JACK_BTN_0) - fls(type); + + WARN_ON(jack->registered); + + if (!keytype || key >= ARRAY_SIZE(jack->key)) + return -EINVAL; + + jack->type |= type; + jack->key[key] = keytype; + + return 0; +} +EXPORT_SYMBOL(snd_jack_set_key); + +/** * snd_jack_report - Report the current status of a jack * * @jack: The jack to report status for @@ -163,10 +213,19 @@ void snd_jack_report(struct snd_jack *jack, int status) if (!jack) return; - for (i = 0; i < ARRAY_SIZE(jack_types); i++) { + for (i = 0; i < ARRAY_SIZE(jack->key); i++) { + int testbit = SND_JACK_BTN_0 >> i; + + if (jack->type & testbit) + input_report_key(jack->input_dev, jack->key[i], + status & testbit); + } + + for (i = 0; i < ARRAY_SIZE(jack_switch_types); i++) { int testbit = 1 << i; if (jack->type & testbit) - input_report_switch(jack->input_dev, jack_types[i], + input_report_switch(jack->input_dev, + jack_switch_types[i], status & testbit); } |