Commit 75208a11 authored Jun 23, 2020 by Macpaul Lin Committed by Sasha Levin Jun 30, 2020

ALSA: usb-audio: add quirk for Samsung USBC Headset (AKG)



commit a32a1fc99807244d920d274adc46ba04b538cc8a upstream.

We've found Samsung USBC Headset (AKG) (VID: 0x04e8, PID: 0xa051)
need a tiny delay after each class compliant request.
Otherwise the device might not be able to be recognized each times.

Signed-off-by: Chihhao Chen <chihhao.chen@mediatek.com>
Signed-off-by: Macpaul Lin <macpaul.lin@mediatek.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/1592910203-24035-1-git-send-email-macpaul.lin@mediatek.com


Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 0237a33e

sound/usb/quirks.c

+8 −0

Original line number	Original line	Diff line number	Diff line
	@@ -1345,6 +1345,14 @@ void snd_usb_ctl_msg_quirk(struct usb_device *dev, unsigned int pipe,
	chip->usb_id == USB_ID(0x0951, 0x16ad)) &&		chip->usb_id == USB_ID(0x0951, 0x16ad)) &&
	(requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)		(requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)
	usleep_range(1000, 2000);		usleep_range(1000, 2000);

			/*
			* Samsung USBC Headset (AKG) need a tiny delay after each
			* class compliant request. (Model number: AAM625R or AAM627R)
			*/
			if (chip->usb_id == USB_ID(0x04e8, 0xa051) &&
			(requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)
			usleep_range(5000, 6000);
	}		}

	/*		/*