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Commit 93446edc authored by Clemens Ladisch's avatar Clemens Ladisch Committed by Jaroslav Kysela
Browse files

[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: default avatarClemens Ladisch <clemens@ladisch.de>
parent 434b7f56

sound/usb/usbmixer.c

+95 −11
Original line number Diff line number Diff line
@@ -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)