linux-kernel - [PATCH] USB: serial: option: add Telit LE910 MBIM composition

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Message-Id: <20251209155038.912-1-u.mohr@semex-engcon.com>
Date: Tue,  9 Dec 2025 16:50:38 +0100
From: Ulrich Mohr <u.mohr@...ex-engcon.com>
To: linux-usb@...r.kernel.org
Cc: Johan Hovold <johan@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org,
	Ulrich Mohr <u.mohr@...ex-engcon.com>
Subject: [PATCH] USB: serial: option: add Telit LE910 MBIM composition

Add support for Telit LE910 module when operating in MBIM composition
with additional ttys. This usb product ID is used by the module
when AT#USBCFG is set to 7.

0x1052: MBIM + tty(NMEA) + tty(MODM) + tty(MODEM) +SAP
T:  Bus=01 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#=  2 Spd=480  MxCh= 0
D:  Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=1bc7 ProdID=1252 Rev=03.18
S:  Manufacturer=Android
S:  Product=LE910C1-EU
S:  SerialNumber=0123456789ABCDEF
C:  #Ifs= 6 Cfg#= 1 Atr=a0 MxPwr=500mA
I:  If#= 0 Alt= 0 #EPs= 1 Cls=02(commc) Sub=0e Prot=00 Driver=cdc_mbim
E:  Ad=82(I) Atr=03(Int.) MxPS=  64 Ivl=32ms
I:  If#= 1 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim
E:  Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:  If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
E:  Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=83(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=84(I) Atr=03(Int.) MxPS=  10 Ivl=32ms
I:  If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=(none)
E:  Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=85(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=86(I) Atr=03(Int.) MxPS=  10 Ivl=32ms
I:  If#= 4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
E:  Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=87(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=88(I) Atr=03(Int.) MxPS=  10 Ivl=32ms
I:  If#= 5 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
E:  Ad=05(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=89(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=8a(I) Atr=03(Int.) MxPS=  10 Ivl=32ms

Signed-off-by: Ulrich Mohr <u.mohr@...ex-engcon.com>
---
 drivers/usb/serial/option.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index 5de856f65f0d..19921f129c0e 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -335,10 +335,11 @@ static void option_instat_callback(struct urb *urb);
 #define TELIT_PRODUCT_LE920A4_1208		0x1208
 #define TELIT_PRODUCT_LE920A4_1211		0x1211
 #define TELIT_PRODUCT_LE920A4_1212		0x1212
 #define TELIT_PRODUCT_LE920A4_1213		0x1213
 #define TELIT_PRODUCT_LE920A4_1214		0x1214
+#define TELIT_PRODUCT_LE910_USBCFG7		0x1252
 
 /* ZTE PRODUCTS */
 #define ZTE_VENDOR_ID				0x19d2
 #define ZTE_PRODUCT_MF622			0x0001
 #define ZTE_PRODUCT_MF628			0x0015
@@ -1489,10 +1490,11 @@ static const struct usb_device_id option_ids[] = {
 	{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1230, 0xff),	/* Telit LE910Cx (rmnet) */
 	  .driver_info = NCTRL(0) | RSVD(1) | RSVD(2) },
 	{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1231, 0xff),	/* Telit LE910Cx (RNDIS) */
 	  .driver_info = NCTRL(2) | RSVD(3) },
 	{ USB_DEVICE_AND_INTERFACE_INFO(TELIT_VENDOR_ID, 0x1250, 0xff, 0x00, 0x00) },	/* Telit LE910Cx (rmnet) */
+	{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, TELIT_PRODUCT_LE910_USBCFG7, 0xff) },	/* Telit LE910Cx (MBIM) */
 	{ USB_DEVICE(TELIT_VENDOR_ID, 0x1260),
 	  .driver_info = NCTRL(0) | RSVD(1) | RSVD(2) },
 	{ USB_DEVICE(TELIT_VENDOR_ID, 0x1261),
 	  .driver_info = NCTRL(0) | RSVD(1) | RSVD(2) },
 	{ USB_DEVICE(TELIT_VENDOR_ID, 0x1900),				/* Telit LN940 (QMI) */
-- 
2.39.5