Merge branch 'topic/jack' into for-linus
diff --git a/include/sound/jack.h b/include/sound/jack.h
index f236e42..d90b9fa 100644
--- a/include/sound/jack.h
+++ b/include/sound/jack.h
@@ -42,6 +42,11 @@
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 @@
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 @@
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 14b8a4e..4902ae5 100644
--- a/sound/core/jack.c
+++ b/sound/core/jack.c
@@ -24,7 +24,7 @@
#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,
@@ -56,7 +56,7 @@
{
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);
@@ -66,6 +66,19 @@
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;
@@ -113,10 +126,10 @@
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)
@@ -152,6 +165,43 @@
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
@@ -164,10 +214,19 @@
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);
}