Re: [PATCH v2] USB: serial: qcserial: add new usb-id for Dell Wireless DW5826e-m

[Lars Melin <larsm17@gmail.com>]

On 2026-05-18 08:54, Jack Wu wrote:
> Add support for Dell DW5826e-m with USB-id 0x413c:0x81ea & 0x413c:0x81eb.
> 
> It is 0x413c:0x81ea
> T:  Bus=02 Lev=01 Prnt=01 Port=05 Cnt=01 Dev#=110 Spd=480  MxCh= 0
> D:  Ver= 2.10 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs=  1
> P:  Vendor=413c ProdID=81ea Rev= 5.04
> S:  Manufacturer=DELL
> S:  Product=DW5826e-m Qualcomm Snapdragon X12 Global LTE-A
> S:  SerialNumber=358988870177734
> C:* #Ifs= 7 Cfg#= 1 Atr=a0 MxPwr=500mA
> A:  FirstIf#=12 IfCount= 2 Cls=02(comm.) Sub=0e Prot=00
> I:* If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=30 Driver=qcserial
> E:  Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> E:  Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> I:* If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=42 Prot=01 Driver=usbfs
> E:  Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> E:  Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> I:* If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=60 Driver=qcserial
> E:  Ad=84(I) Atr=03(Int.) MxPS=  10 Ivl=32ms
> E:  Ad=83(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> E:  Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> I:* If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=qcserial
> E:  Ad=86(I) Atr=03(Int.) MxPS=  10 Ivl=32ms
> E:  Ad=85(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> E:  Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> I:* If#= 4 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
> E:  Ad=87(I) Atr=03(Int.) MxPS=  64 Ivl=32ms
> I:* If#=12 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=0e Prot=00 Driver=cdc_mbim
> E:  Ad=88(I) Atr=03(Int.) MxPS=  64 Ivl=32ms
> I:  If#=13 Alt= 0 #EPs= 0 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim
> I:* If#=13 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim
> E:  Ad=8e(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> E:  Ad=0f(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> 
> It is 0x413c:0x81eb
> T:  Bus=02 Lev=01 Prnt=01 Port=05 Cnt=01 Dev#=109 Spd=480  MxCh= 0
> D:  Ver= 2.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
> P:  Vendor=413c ProdID=81eb Rev= 0.00
> S:  Manufacturer=DELL
> S:  Product=DW5826e-m Qualcomm Snapdragon X12 Global LTE-A
> S:  SerialNumber=358988870177734
> C:* #Ifs= 1 Cfg#= 1 Atr=a0 MxPwr=  2mA
> I:* If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=qcserial
> E:  Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> E:  Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> 
> Signed-off-by: Jack Wu <jackbb_wu@compal.com>
> ---
> v2:
>    -sorted by PID and add the newline separator before the Huawei devices.
> ---
> ---
>   drivers/usb/serial/qcserial.c | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c
> index 1a930dc668e4..bb1647a17066 100644
> --- a/drivers/usb/serial/qcserial.c
> +++ b/drivers/usb/serial/qcserial.c
> @@ -186,9 +186,11 @@ static const struct usb_device_id id_table[] = {
>          {DEVICE_SWI(0x413c, 0x81d0)},   /* Dell Wireless 5819 */
>          {DEVICE_SWI(0x413c, 0x81d1)},   /* Dell Wireless 5818 */
>          {DEVICE_SWI(0x413c, 0x81d2)},   /* Dell Wireless 5818 */
> +       {DEVICE_SWI(0x413c, 0x81ea)},   /* Dell Wireless DW5826e-m */
> +       {DEVICE_SWI(0x413c, 0x81eb)},   /* Dell Wireless DW5826e-m QDL */
>          {DEVICE_SWI(0x413c, 0x8217)},   /* Dell Wireless DW5826e */
>          {DEVICE_SWI(0x413c, 0x8218)},   /* Dell Wireless DW5826e QDL */
> -
> +
>          /* Huawei devices */
>          {DEVICE_HWI(0x03f0, 0x581d)},   /* HP lt4112 LTE/HSPA+ Gobi 4G Modem (Huawei me906e) */
> 
> --
> 2.34.1
> 
> 
> 
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> 
Hi Jack,
DEVICE_SWI is intended for non-GOBI Sierra Wireless devices or DELL 
branded version of them which the DW5934e isn't.
A DEVICE_SWI interface layout has a QMI/RMNET function in interface #8 
which the DW5934e hasn't.
So the DW5934e does not belong in qcserial, it should instead be added 
in the serial option driver.

thanks
Lars