[ALSA] usb-audio - Audigy 2 NX blinkenlights
USB generic driver
Adds mixer controls for the CMSS/Dolby Digital/Power LEDs
on the SB Audigy 2 NX.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
diff --git a/sound/usb/usbmixer.c b/sound/usb/usbmixer.c
index d90d6fa..ec880ff 100644
--- a/sound/usb/usbmixer.c
+++ b/sound/usb/usbmixer.c
@@ -83,6 +83,8 @@
struct urb *rc_urb;
struct usb_ctrlrequest *rc_setup_packet;
u8 rc_buffer[6];
+
+ u8 audigy2nx_leds[3];
};
@@ -1846,6 +1848,85 @@
return 0;
}
+static int snd_audigy2nx_led_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = 1;
+ return 0;
+}
+
+static int snd_audigy2nx_led_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
+{
+ struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
+ int index = kcontrol->private_value;
+
+ ucontrol->value.integer.value[0] = mixer->audigy2nx_leds[index];
+ return 0;
+}
+
+static int snd_audigy2nx_led_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
+{
+ struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
+ int index = kcontrol->private_value;
+ int value = ucontrol->value.integer.value[0];
+ int err, changed;
+
+ if (value > 1)
+ return -EINVAL;
+ changed = value != mixer->audigy2nx_leds[index];
+ err = snd_usb_ctl_msg(mixer->chip->dev,
+ usb_sndctrlpipe(mixer->chip->dev, 0), 0x24,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
+ value, index + 2, NULL, 0, 100);
+ if (err < 0)
+ return err;
+ mixer->audigy2nx_leds[index] = value;
+ return changed;
+}
+
+static snd_kcontrol_new_t snd_audigy2nx_controls[] = {
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "CMSS LED Switch",
+ .info = snd_audigy2nx_led_info,
+ .get = snd_audigy2nx_led_get,
+ .put = snd_audigy2nx_led_put,
+ .private_value = 0,
+ },
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Power LED Switch",
+ .info = snd_audigy2nx_led_info,
+ .get = snd_audigy2nx_led_get,
+ .put = snd_audigy2nx_led_put,
+ .private_value = 1,
+ },
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Dolby Digital LED Switch",
+ .info = snd_audigy2nx_led_info,
+ .get = snd_audigy2nx_led_get,
+ .put = snd_audigy2nx_led_put,
+ .private_value = 2,
+ },
+};
+
+static int snd_audigy2nx_controls_create(struct usb_mixer_interface *mixer)
+{
+ int i, err;
+
+ for (i = 0; i < ARRAY_SIZE(snd_audigy2nx_controls); ++i) {
+ err = snd_ctl_add(mixer->chip->card,
+ snd_ctl_new1(&snd_audigy2nx_controls[i], mixer));
+ if (err < 0)
+ return err;
+ }
+ mixer->audigy2nx_leds[1] = 1; /* Power LED is on by default */
+ return 0;
+}
+
int snd_usb_create_mixer(snd_usb_audio_t *chip, int ctrlif)
{
static snd_device_ops_t dev_ops = {
@@ -1871,23 +1952,26 @@
}
if ((err = snd_usb_mixer_controls(mixer)) < 0 ||
- (err = snd_usb_mixer_status_create(mixer)) < 0) {
- snd_usb_mixer_free(mixer);
- return err;
- }
+ (err = snd_usb_mixer_status_create(mixer)) < 0)
+ goto _error;
- if ((err = snd_usb_soundblaster_remote_init(mixer)) < 0) {
- snd_usb_mixer_free(mixer);
- return err;
+ if ((err = snd_usb_soundblaster_remote_init(mixer)) < 0)
+ goto _error;
+
+ if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020)) {
+ if ((err = snd_audigy2nx_controls_create(mixer)) < 0)
+ goto _error;
}
err = snd_device_new(chip->card, SNDRV_DEV_LOWLEVEL, mixer, &dev_ops);
- if (err < 0) {
- snd_usb_mixer_free(mixer);
- return err;
- }
+ if (err < 0)
+ goto _error;
list_add(&mixer->list, &chip->mixer_list);
return 0;
+
+_error:
+ snd_usb_mixer_free(mixer);
+ return err;
}
void snd_usb_mixer_disconnect(struct list_head *p)