#include <linux/module.h>
#include <sound/jack.h>
#include <sound/core.h>
+#include <sound/control.h>
+
+struct snd_jack_kctl {
+ struct snd_kcontrol *kctl;
+ struct list_head list; /* list of controls belong to the same jack */
+ unsigned int mask_bits; /* only masked status bits are reported via kctl */
+};
static int jack_switch_types[SND_JACK_SWITCH_TYPES] = {
SW_HEADPHONE_INSERT,
static int snd_jack_dev_free(struct snd_device *device)
{
struct snd_jack *jack = device->device_data;
+ struct snd_card *card = device->card;
+ struct snd_jack_kctl *jack_kctl, *tmp_jack_kctl;
+ list_for_each_entry_safe(jack_kctl, tmp_jack_kctl, &jack->kctl_list, list) {
+ list_del_init(&jack_kctl->list);
+ snd_ctl_remove(card, jack_kctl->kctl);
+ }
if (jack->private_free)
jack->private_free(jack);
snprintf(jack->name, sizeof(jack->name), "%s %s",
card->shortname, jack->id);
+
+ if (!jack->input_dev)
+ return 0;
+
jack->input_dev->name = jack->name;
/* Default to the sound card device. */
return err;
}
+static void snd_jack_kctl_private_free(struct snd_kcontrol *kctl)
+{
+ struct snd_jack_kctl *jack_kctl;
+
+ jack_kctl = kctl->private_data;
+ if (jack_kctl) {
+ list_del(&jack_kctl->list);
+ kfree(jack_kctl);
+ }
+}
+
+static void snd_jack_kctl_add(struct snd_jack *jack, struct snd_jack_kctl *jack_kctl)
+{
+ list_add_tail(&jack_kctl->list, &jack->kctl_list);
+}
+
+static struct snd_jack_kctl * snd_jack_kctl_new(struct snd_card *card, const char *name, unsigned int mask)
+{
+ struct snd_kcontrol *kctl;
+ struct snd_jack_kctl *jack_kctl;
+ int err;
+
+ kctl = snd_kctl_jack_new(name, card);
+ if (!kctl)
+ return NULL;
+
+ err = snd_ctl_add(card, kctl);
+ if (err < 0)
+ return NULL;
+
+ jack_kctl = kzalloc(sizeof(*jack_kctl), GFP_KERNEL);
+
+ if (!jack_kctl)
+ goto error;
+
+ jack_kctl->kctl = kctl;
+ jack_kctl->mask_bits = mask;
+
+ kctl->private_data = jack_kctl;
+ kctl->private_free = snd_jack_kctl_private_free;
+
+ return jack_kctl;
+error:
+ snd_ctl_free_one(kctl);
+ return NULL;
+}
+
+/**
+ * snd_jack_add_new_kctl - Create a new snd_jack_kctl and add it to jack
+ * @jack: the jack instance which the kctl will attaching to
+ * @name: the name for the snd_kcontrol object
+ * @mask: a bitmask of enum snd_jack_type values that can be detected
+ * by this snd_jack_kctl object.
+ *
+ * Creates a new snd_kcontrol object and adds it to the jack kctl_list.
+ *
+ * Return: Zero if successful, or a negative error code on failure.
+ */
+int snd_jack_add_new_kctl(struct snd_jack *jack, const char * name, int mask)
+{
+ struct snd_jack_kctl *jack_kctl;
+
+ jack_kctl = snd_jack_kctl_new(jack->card, name, mask);
+ if (!jack_kctl)
+ return -ENOMEM;
+
+ snd_jack_kctl_add(jack, jack_kctl);
+ return 0;
+}
+EXPORT_SYMBOL(snd_jack_add_new_kctl);
+
/**
* snd_jack_new - Create a new jack
* @card: the card instance
* @type: a bitmask of enum snd_jack_type values that can be detected by
* this jack
* @jjack: Used to provide the allocated jack object to the caller.
+ * @initial_kctl: if true, create a kcontrol and add it to the jack list.
+ * @phantom_jack: Don't create a input device for phantom jacks.
*
* Creates a new jack object.
*
* On success @jjack will be initialised.
*/
int snd_jack_new(struct snd_card *card, const char *id, int type,
- struct snd_jack **jjack)
+ struct snd_jack **jjack, bool initial_kctl, bool phantom_jack)
{
struct snd_jack *jack;
+ struct snd_jack_kctl *jack_kctl = NULL;
int err;
int i;
static struct snd_device_ops ops = {
.dev_disconnect = snd_jack_dev_disconnect,
};
+ if (initial_kctl) {
+ jack_kctl = snd_jack_kctl_new(card, id, type);
+ if (!jack_kctl)
+ return -ENOMEM;
+ }
+
jack = kzalloc(sizeof(struct snd_jack), GFP_KERNEL);
if (jack == NULL)
return -ENOMEM;
jack->id = kstrdup(id, GFP_KERNEL);
- jack->input_dev = input_allocate_device();
- if (jack->input_dev == NULL) {
- err = -ENOMEM;
- goto fail_input;
- }
+ /* don't creat input device for phantom jack */
+ if (!phantom_jack) {
+ jack->input_dev = input_allocate_device();
+ if (jack->input_dev == NULL) {
+ err = -ENOMEM;
+ goto fail_input;
+ }
- jack->input_dev->phys = "ALSA";
+ jack->input_dev->phys = "ALSA";
- jack->type = type;
+ jack->type = type;
- for (i = 0; i < SND_JACK_SWITCH_TYPES; i++)
- if (type & (1 << i))
- input_set_capability(jack->input_dev, EV_SW,
- jack_switch_types[i]);
+ for (i = 0; i < SND_JACK_SWITCH_TYPES; i++)
+ if (type & (1 << i))
+ input_set_capability(jack->input_dev, EV_SW,
+ jack_switch_types[i]);
+
+ }
err = snd_device_new(card, SNDRV_DEV_JACK, jack, &ops);
if (err < 0)
goto fail_input;
+ jack->card = card;
+ INIT_LIST_HEAD(&jack->kctl_list);
+
+ if (initial_kctl)
+ snd_jack_kctl_add(jack, jack_kctl);
+
*jjack = jack;
return 0;
void snd_jack_set_parent(struct snd_jack *jack, struct device *parent)
{
WARN_ON(jack->registered);
+ if (!jack->input_dev)
+ return;
jack->input_dev->dev.parent = parent;
}
*/
void snd_jack_report(struct snd_jack *jack, int status)
{
+ struct snd_jack_kctl *jack_kctl;
int i;
if (!jack)
return;
+ list_for_each_entry(jack_kctl, &jack->kctl_list, list)
+ snd_kctl_jack_report(jack->card, jack_kctl->kctl,
+ status & jack_kctl->mask_bits);
+
+ if (!jack->input_dev)
+ return;
+
for (i = 0; i < ARRAY_SIZE(jack->key); i++) {
int testbit = SND_JACK_BTN_0 >> i;
}
input_sync(jack->input_dev);
+
}
EXPORT_SYMBOL(snd_jack_report);
-
-MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
-MODULE_DESCRIPTION("Jack detection support for ALSA");
-MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff