netdev - Re: [PATCH 1/1] net: usb: qmi_wwan: add Telit 0x1050 composition

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Date:   Wed, 09 Oct 2019 12:17:24 +0200
From:   Bjørn Mork <bjorn@...k.no>
To:     Daniele Palmas <dnlplm@...il.com>
Cc:     netdev@...r.kernel.org, "David S . Miller" <davem@...emloft.net>,
        linux-usb@...r.kernel.org
Subject: Re: [PATCH 1/1] net: usb: qmi_wwan: add Telit 0x1050 composition

Daniele Palmas <dnlplm@...il.com> writes:

> This patch adds support for Telit FN980 0x1050 composition
>
> 0x1050: tty, adb, rmnet, tty, tty, tty, tty

Great!  I must admit I have been a bit curious about this since you
submitted the option patch.  And I'm still curious about what to expect
from X55 modems in general.  There was a lot of discussion about future
modems using PCIe instead of USB etc.  I'd appreciate any info you have
on relative performance, quirks, firmware workarounds etc.  If you are
allowed to share any of it..

Acked-by: Bjørn Mork" <bjorn@...k.no>

> please find below usb-devices output
>
> T:  Bus=03 Lev=01 Prnt=01 Port=06 Cnt=02 Dev#= 10 Spd=480 MxCh= 0

480 Mbps is a bit slow for this device, isn't it? :-)

I assume you've tested with higher bus speeds?  Not that it matters for
this patch.  Just curious again.

> D:  Ver= 2.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
> P:  Vendor=1bc7 ProdID=1050 Rev=04.14
> S:  Manufacturer=Telit Wireless Solutions
> S:  Product=FN980m
> S:  SerialNumber=270b8241
> C:  #Ifs= 7 Cfg#= 1 Atr=80 MxPwr=500mA
> I:  If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=30 Driver=option
> I:  If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=42 Prot=01 Driver=usbfs
> I:  If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=qmi_wwan
> I:  If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
> I:  If#= 4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
> I:  If#= 5 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
> I:  If#= 6 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
>
> Thanks,
> Daniele
> ---
>  drivers/net/usb/qmi_wwan.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
> index 3d77cd402ba9..596428ec71df 100644
> --- a/drivers/net/usb/qmi_wwan.c
> +++ b/drivers/net/usb/qmi_wwan.c
> @@ -1327,6 +1327,7 @@ static const struct usb_device_id products[] = {
>  	{QMI_FIXED_INTF(0x2357, 0x0201, 4)},	/* TP-LINK HSUPA Modem MA180 */
>  	{QMI_FIXED_INTF(0x2357, 0x9000, 4)},	/* TP-LINK MA260 */
>  	{QMI_QUIRK_SET_DTR(0x1bc7, 0x1040, 2)},	/* Telit LE922A */
> +	{QMI_QUIRK_SET_DTR(0x1bc7, 0x1050, 2)},	/* Telit FN980 */
>  	{QMI_FIXED_INTF(0x1bc7, 0x1100, 3)},	/* Telit ME910 */
>  	{QMI_FIXED_INTF(0x1bc7, 0x1101, 3)},	/* Telit ME910 dual modem */
>  	{QMI_FIXED_INTF(0x1bc7, 0x1200, 5)},	/* Telit LE920 */


Acked-by: Bjørn Mork <bjorn@...k.no>