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Date:   Fri, 20 Nov 2020 10:14:33 +0100
From:   Vincent Palatin <vpalatin@...omium.org>
To:     Johan Hovold <johan@...nel.org>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] usb: serial: option: add Fibocom NL668 variants

On Fri, Nov 20, 2020 at 10:01 AM <vpalatin@...omium.org> wrote:
>
> From: Vincent Palatin <vpalatin@...omium.org>
>
> Update the USB serial option driver support for the Fibocom NL668 Cat.4
> LTE modules as there are actually several different variants.
> Got clarifications from Fibocom, there are distinct products:
> - VID:PID 1508:1001, NL668 for IOT (no MBIM interface)
> - VID:PID 2cb7:01a0, NL668-AM and NL652-EU are laptop M.2 cards (with
>   MBIM interfaces for Windows/Linux/Chrome OS), respectively for Americas
>   and Europe.
>
> usb-devices output for the laptop M.2 cards:
> T:  Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  4 Spd=480 MxCh= 0
> D:  Ver= 2.00 Cls=ef(misc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
> P:  Vendor=2cb7 ProdID=01a0 Rev=03.18
> S:  Manufacturer=Fibocom Wireless Inc.
> S:  Product=Fibocom NL652-EU Modem
> S:  SerialNumber=0123456789ABCDEF
> C:  #Ifs= 5 Cfg#= 1 Atr=a0 MxPwr=500mA
> I:  If#= 0 Alt= 0 #EPs= 1 Cls=02(commc) Sub=0e Prot=00 Driver=cdc_mbim
> I:  If#= 1 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim
> I:  If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=(none)
> I:  If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=(none)
> I:  If#= 4 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
>
> Signed-off-by: Vincent Palatin <vpalatin@...omium.org>
> ---
>  drivers/usb/serial/option.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
> index 54ca85cc920d..2a6d59bc0201 100644
> --- a/drivers/usb/serial/option.c
> +++ b/drivers/usb/serial/option.c
> @@ -2046,12 +2046,13 @@ static const struct usb_device_id option_ids[] = {
>           .driver_info = RSVD(0) | RSVD(1) | RSVD(6) },
>         { USB_DEVICE(0x0489, 0xe0b5),                                           /* Foxconn T77W968 ESIM */
>           .driver_info = RSVD(0) | RSVD(1) | RSVD(6) },
> -       { USB_DEVICE(0x1508, 0x1001),                                           /* Fibocom NL668 */
> +       { USB_DEVICE(0x1508, 0x1001),                                           /* Fibocom NL668 (IOT version) */
>           .driver_info = RSVD(4) | RSVD(5) | RSVD(6) },
>         { USB_DEVICE(0x2cb7, 0x0104),                                           /* Fibocom NL678 series */
>           .driver_info = RSVD(4) | RSVD(5) },
>         { USB_DEVICE_INTERFACE_CLASS(0x2cb7, 0x0105, 0xff),                     /* Fibocom NL678 series */
>           .driver_info = RSVD(6) },
> +       { USB_DEVICE(0x2cb7, 0x01a0, 0xff) },                                   /* Fibocom NL668-AM/NL652-EU (laptop MBIM) */


I obviously screw up here. Wrong version of the patch with the wrong macro name
I will send the updated one.

>
>         { USB_DEVICE_INTERFACE_CLASS(0x305a, 0x1404, 0xff) },                   /* GosunCn GM500 RNDIS */
>         { USB_DEVICE_INTERFACE_CLASS(0x305a, 0x1405, 0xff) },                   /* GosunCn GM500 MBIM */
>         { USB_DEVICE_INTERFACE_CLASS(0x305a, 0x1406, 0xff) },                   /* GosunCn GM500 ECM/NCM */
> --
> 2.26.2
>

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