linux-kernel - [PATCH] USB: serial: option: add Foxconn T77W175 composition 0x901d

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Message-Id: <20210816034746.3536-1-slark_xiao@163.com>
Date:   Mon, 16 Aug 2021 11:47:46 +0800
From:   Slark Xiao <slark_xiao@....com>
To:     johan@...nel.org, gregkh@...uxfoundation.org
Cc:     linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        Slark Xiao <slark_xiao@....com>
Subject: [PATCH] USB: serial: option: add Foxconn T77W175 composition 0x901d

Foxconn SDX55 T77W175 device is working in PCIe mode normally.
You can find the PCIe support in drivers/bus/mhi/pci_geneirc.c file.
But in some scenario, we need to capture the memory dump once it crashed.
So a diag port under USB driver is needed.

Only interface 0 is used:
jbd@...-ThinkPad-P1-Gen-4:~$ lsusb | grep 05c6
Bus 003 Device 010: ID 05c6:901d Qualcomm, Inc. Generic Mobile Broadband Adapter
jbd@...-ThinkPad-P1-Gen-4:~$ lsusb -t | grep "Dev 10"
    |__ Port 7: Dev 10, If 0, Class=Vendor Specific Class, Driver=option, 480M

Signed-off-by: Slark Xiao <slark_xiao@....com>
---
 drivers/usb/serial/option.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index 039450069ca4..c275f489c1cc 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -2068,6 +2068,7 @@ static const struct usb_device_id option_ids[] = {
 	  .driver_info = RSVD(0) | RSVD(1) | RSVD(6) },
 	{ USB_DEVICE(0x0489, 0xe0b5),						/* Foxconn T77W968 ESIM */
 	  .driver_info = RSVD(0) | RSVD(1) | RSVD(6) },
+	{ USB_DEVICE(QUALCOMM_VENDOR_ID, 0x901d) },				/* Foxconn T77W175 PCIE+USB mode*/
 	{ USB_DEVICE(0x1508, 0x1001),						/* Fibocom NL668 (IOT version) */
 	  .driver_info = RSVD(4) | RSVD(5) | RSVD(6) },
 	{ USB_DEVICE(0x2cb7, 0x0104),						/* Fibocom NL678 series */
-- 
2.25.1