linux-kernel - [PATCH v2] USB: serial: option: Add Telit FT980-KS composition

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Message-Id: <20201004155813.2342-1-lb.workbox@gmail.com>
Date:   Sun,  4 Oct 2020 18:58:13 +0300
From:   Leonid Bloch <lb.workbox@...il.com>
To:     linux-kernel@...r.kernel.org, Lars Melin <larsm17@...il.com>
Cc:     linux-usb@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Johan Hovold <johan@...nel.org>,
        Leonid Bloch <leonidb@...cscloud.com>
Subject: [PATCH v2] USB: serial: option: Add Telit FT980-KS composition

This commit adds the following Telit FT980-KS composition:

0x1054: rndis, diag, adb, nmea, modem, modem, aux

AT commands can be sent to /dev/ttyUSB2.

Signed-off-by: Leonid Bloch <lb.workbox@...il.com>
---

The full composition is not tested, and it is the default one according
to Telit support. What is tested, is that this commit makes
/dev/ttyUSB{0..4} appear upon connecting the FT980-KS, and allows
sending AT commands to /dev/ttyUSB2.

Changes since v1:

* Interface #3 (ADB) is blacklisted.
* NCTRL flag is set to the diag interface.

These changes (relative to v1) also allow ModemManager to recognize the
device.

 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 0c6f160a214a..fe76710167f8 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -1186,6 +1186,8 @@ static const struct usb_device_id option_ids[] = {
 	  .driver_info = NCTRL(2) | RSVD(3) },
 	{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1053, 0xff),	/* Telit FN980 (ECM) */
 	  .driver_info = NCTRL(0) | RSVD(1) },
+	{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1054, 0xff),	/* Telit FT980-KS */
+	  .driver_info = NCTRL(2) | RSVD(3) },
 	{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_ME910),
 	  .driver_info = NCTRL(0) | RSVD(1) | RSVD(3) },
 	{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_ME910_DUAL_MODEM),
-- 
2.28.0