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| author | Ian Lin <ian.lin@jetone.com.tw> | 2026-09-04 16:00:46 +0800 |
|---|---|---|
| committer | Johan Hovold <johan@kernel.org> | 2026-09-08 11:00:48 +0200 |
| commit | b51faf3f2e307f114854bbe6d495f03cd5370686 (patch) | |
| tree | c8063714808ff67a1bee1223508507ec9250db4a | |
| parent | 6177bcd94be83f80a032c2e69a06606d325335b9 (diff) | |
| download | linux-next-b51faf3f2e307f114854bbe6d495f03cd5370686.tar.gz linux-next-b51faf3f2e307f114854bbe6d495f03cd5370686.zip | |
USB: serial: option: add Compal EXC-T1 support
The Compal EXC-T1 is a Qualcomm MDM9207-based LTE modem which reports
"EXC-x1" as its USB product string. It exposes diagnostic, modem, AT,
and NMEA ports as vendor-specific interfaces with subclass 0x10 and
protocols 0x01 through 0x04.
Add exact interface matches for these four ports, leaving the ff/ff/ff
interface unbound.
Relevant output from usb-devices:
T: Bus=03 Lev=02 Prnt=03 Port=03 Cnt=01 Dev#= 6 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=04b7 ProdID=4d22 Rev=03.18
S: Manufacturer=CEI
S: Product=EXC-x1
C: #Ifs= 6 Cfg#= 1 Atr=a0 MxPwr=500mA
I: If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=10 Prot=01 Driver=option
I: If#= 1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=10 Prot=02 Driver=option
I: If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=10 Prot=03 Driver=option
I: If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=10 Prot=04 Driver=option
I: If#= 4 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
I: If#= 5 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=10 Prot=05 Driver=qmi_wwan
Tested on a Compal EXC-T1 modem using an Ubuntu kernel build. The four
serial interfaces bound to option and exposed ttyUSB3 through ttyUSB6.
Assisted-by: Codex:GPT-5
Signed-off-by: Ian Lin <ian.lin@jetone.com.tw>
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>
| -rw-r--r-- | drivers/usb/serial/option.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index d530dbceccb1..828b1be3fee2 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -2436,6 +2436,10 @@ static const struct usb_device_id option_ids[] = { .driver_info = RSVD(5) }, { USB_DEVICE_INTERFACE_CLASS(0x0489, 0xe167, 0xff), /* Foxconn T99W640 MBIM */ .driver_info = RSVD(3) }, + { USB_DEVICE_AND_INTERFACE_INFO(0x04b7, 0x4d22, 0xff, 0x10, 0x01) }, /* Compal EXC-T1 */ + { USB_DEVICE_AND_INTERFACE_INFO(0x04b7, 0x4d22, 0xff, 0x10, 0x02) }, + { USB_DEVICE_AND_INTERFACE_INFO(0x04b7, 0x4d22, 0xff, 0x10, 0x03) }, + { USB_DEVICE_AND_INTERFACE_INFO(0x04b7, 0x4d22, 0xff, 0x10, 0x04) }, { USB_DEVICE_AND_INTERFACE_INFO(0x04b7, 0x8217, 0xff, 0xff, 0x30) }, /* Compal EXM-G1x */ { USB_DEVICE_AND_INTERFACE_INFO(0x04b7, 0x8217, 0xff, 0xff, 0x40) }, { USB_DEVICE_AND_INTERFACE_INFO(0x04b7, 0x8217, 0xff, 0xff, 0x60) }, |