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[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>
This commit is contained in:
Clemens Ladisch 2005-05-03 08:02:40 +02:00 committed by Jaroslav Kysela
parent 434b7f5687
commit 93446edcd0
1 changed files with 95 additions and 11 deletions
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106
sound/usb/usbmixer.c
View File

@ -83,6 +83,8 @@ struct usb_mixer_interface {
struct urb *rc_urb;
struct usb_ctrlrequest *rc_setup_packet;
u8 rc_buffer[6];
u8 audigy2nx_leds[3];
};
@ -1846,6 +1848,85 @@ static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer)
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 @@ int snd_usb_create_mixer(snd_usb_audio_t *chip, int ctrlif)
}
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)