sound: usb: quirks: add quirk for Samsung USBC Headset (AKG)

Message ID 1592910203-24035-1-git-send-email-macpaul.lin@mediatek.com
State New
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Series
  • sound: usb: quirks: add quirk for Samsung USBC Headset (AKG)
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Commit Message

Macpaul Lin June 23, 2020, 11:03 a.m.
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
---
 sound/usb/quirks.c |    8 ++++++++
 1 file changed, 8 insertions(+)

-- 
1.7.9.5

Patch

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index bca0179..ebba29a 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -1673,6 +1673,14 @@  void snd_usb_ctl_msg_quirk(struct usb_device *dev, unsigned int pipe,
 	     chip->usb_id == USB_ID(0x0951, 0x16ad)) &&
 	    (requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)
 		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);
 }
 
 /*