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From e389fe8b68137344562fb6e4d53d8a89ef6212dd Mon Sep 17 00:00:00 2001
From: Victor Fragoso <victorffs@hotmail.com>
Date: Tue, 21 Nov 2023 21:05:56 +0000
Subject: [PATCH] USB: serial: option: add Fibocom L7xx modules
Git-commit: e389fe8b68137344562fb6e4d53d8a89ef6212dd
References: git-fixes
Patch-mainline: v6.7-rc3

Add support for Fibocom L716-EU module series.

L716-EU is a Fibocom module based on ZTE's V3E/V3T chipset.

Device creates multiple interfaces when connected to PC as follows:
 - Network Interface: ECM or RNDIS (set by FW or AT Command)
 - ttyUSB0: AT port
 - ttyUSB1: Modem port
 - ttyUSB2: AT2 port
 - ttyUSB3: Trace port for log information
 - ADB: ADB port for debugging. ("Driver=usbfs" when ADB server enabled)

Here are the outputs of lsusb and usb-devices:
$ ls /dev/ttyUSB*
/dev/ttyUSB0  /dev/ttyUSB1  /dev/ttyUSB2  /dev/ttyUSB3

Usb-devices: 
L716-EU (ECM mode):
T: Bus=03 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 51 Spd=480  MxCh= 0
D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P: Vendor=2cb7 ProdID=0001 Rev= 1.00
S: Manufacturer=Fibocom,Incorporated
S: Product=Fibocom Mobile Boardband
S: SerialNumber=1234567890ABCDEF
C:* #Ifs= 7 Cfg#= 1 Atr=e0 MxPwr=500mA
A: FirstIf#= 0 IfCount= 2 Cls=02(comm.) Sub=06 Prot=00
I:* If#= 0 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=06 Prot=00 Driver=cdc_ether
E: Ad=87(I) Atr=03(Int.) MxPS=  16 Ivl=32ms
I: If#= 1 Alt= 0 #EPs= 0 Cls=0a(data ) Sub=00 Prot=00 Driver=cdc_ether
I:* If#= 1 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=cdc_ether
E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
E: Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 3 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
E: Ad=83(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 4 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
E: Ad=84(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 5 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
E: Ad=85(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=05(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 6 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=42 Prot=01 Driver=usbfs
E: Ad=86(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=06(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms

L716-EU (RNDIS mode):
T: Bus=03 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 49 Spd=480  MxCh= 0
C:* #Ifs= 7 Cfg#= 1 Atr=e0 MxPwr=500mA
A: FirstIf#= 0 IfCount= 2 Cls=e0(wlcon) Sub=01 Prot=03
I:* If#= 0 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=02 Prot=ff Driver=rndis_host
E: Ad=87(I) Atr=03(Int.) MxPS=   8 Ivl=32ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=rndis_host
I:* If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I:* If#= 3 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I:* If#= 4 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I:* If#= 5 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I:* If#= 6 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=42 Prot=01 Driver=usbfs

Signed-off-by: Victor Fragoso <victorffs@hotmail.com>
Reviewed-by: Lars Melin <larsm17@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Oliver Neukum <oneukum@suse.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 9c76095ebfe1..06b9b04c022a 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -2250,6 +2250,7 @@ static const struct usb_device_id option_ids[] = {
 	  .driver_info = RSVD(4) | RSVD(5) | RSVD(6) },
 	{ USB_DEVICE(0x1782, 0x4d10) },						/* Fibocom L610 (AT mode) */
 	{ USB_DEVICE_INTERFACE_CLASS(0x1782, 0x4d11, 0xff) },			/* Fibocom L610 (ECM/RNDIS mode) */
+	{ USB_DEVICE_AND_INTERFACE_INFO(0x2cb7, 0x0001, 0xff, 0xff, 0xff) },	/* Fibocom L716-EU (ECM/RNDIS mode) */
 	{ USB_DEVICE(0x2cb7, 0x0104),						/* Fibocom NL678 series */
 	  .driver_info = RSVD(4) | RSVD(5) },
 	{ USB_DEVICE_INTERFACE_CLASS(0x2cb7, 0x0105, 0xff),			/* Fibocom NL678 series */
-- 
2.44.0