Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 19570d74 authored by Takashi Iwai's avatar Takashi Iwai
Browse files

ALSA: usb-audio: Add a quirk for Plantronics Gamecom 780 

Plantronics Gamecom 780 headset has a firmware problem, and when the
FU 0x09 volume is changed, it results in either too loud or silence
except for a very narrow range.  This patch provides a workaround,
ignoring the node, initialize the volume in a sane value and keep
untouched.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=65251


Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 0f4881dc

sound/usb/mixer_maps.c

+10 −0
Original line number Diff line number Diff line
@@ -322,6 +322,12 @@ static struct usbmix_name_map hercules_usb51_map[] = { 
	{ 0 }				/* terminator */

};



/* Plantronics Gamecom 780 has a broken volume control, better to disable it */

static struct usbmix_name_map gamecom780_map[] = {

	{ 9, NULL }, /* FU, speaker out */

	{}

};



/*

 * Control map entries

 */
@@ -358,6 +364,10 @@ static struct usbmix_ctl_map usbmix_ctl_maps[] = { 
		.id = USB_ID(0x046d, 0x09a4),

		.ignore_ctl_error = 1,

	},

	{	/* Plantronics GameCom 780 */

		.id = USB_ID(0x047f, 0xc010),

		.map = gamecom780_map,

	},

	{

		/* Hercules DJ Console (Windows Edition) */

		.id = USB_ID(0x06f8, 0xb000),

sound/usb/quirks.c

+14 −0
Original line number Diff line number Diff line
@@ -660,6 +660,18 @@ static int snd_usb_cm6206_boot_quirk(struct usb_device *dev) 
	return err;

}



/* quirk for Plantronics GameCom 780 with CM6302 chip */

static int snd_usb_gamecon780_boot_quirk(struct usb_device *dev)

{

	/* set the initial volume and don't change; other values are either

	 * too loud or silent due to firmware bug (bko#65251)

	 */

	u8 buf[2] = { 0x74, 0xdc };

	return snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR,

			USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,

			UAC_FU_VOLUME << 8, 9 << 8, buf, 2);

}



/*

 * Novation Twitch DJ controller

 */
@@ -986,6 +998,8 @@ int snd_usb_apply_boot_quirk(struct usb_device *dev, 
		return snd_usb_nativeinstruments_boot_quirk(dev);

	case USB_ID(0x0763, 0x2012):  /* M-Audio Fast Track Pro USB */

		return snd_usb_fasttrackpro_boot_quirk(dev);

	case USB_ID(0x047f, 0xc010): /* Plantronics Gamecom 780 */

		return snd_usb_gamecon780_boot_quirk(dev);

	}



	return 0;