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Date: Wed, 9 Feb 2022 15:27:01 +0100
From: Johan Hovold <johan@...nel.org>
To: Slark Xiao <slark_xiao@....com>
Cc: gregkh@...uxfoundation.org, linux-usb@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH] USB: serial: option: add support for DW5829e
On Wed, Feb 09, 2022 at 11:15:35AM +0800, Slark Xiao wrote:
> Dell DW5829e same as DW5821e except CAT level.
> DW5821e supports CAT16 but DW5829e supports CAT9.
> There are 2 types product of DW5829e: normal and eSIM.
> So we will add 2 PID for DW5829e.
> And for each PID, it support MBIM or RMNET.
> Let's see test evidence as below:
>
> DW5829e MBIM mode:
> T: Bus=04 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 4 Spd=5000 MxCh= 0
> D: Ver= 3.10 Cls=ef(misc ) Sub=02 Prot=01 MxPS= 9 #Cfgs= 2
> P: Vendor=413c ProdID=81e6 Rev=03.18
> S: Manufacturer=Dell Inc.
> S: Product=DW5829e Snapdragon X20 LTE
> S: SerialNumber=0123456789ABCDEF
> C: #Ifs= 7 Cfg#= 2 Atr=a0 MxPwr=896mA
> I: If#=0x0 Alt= 0 #EPs= 1 Cls=02(commc) Sub=0e Prot=00 Driver=cdc_mbim
> I: If#=0x1 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim
> I: If#=0x2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
> I: If#=0x3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
> I: If#=0x4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
> I: If#=0x5 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
> I: If#=0x6 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
>
> DW5829e RMNET mode:
> T: Bus=04 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 5 Spd=5000 MxCh= 0
> D: Ver= 3.10 Cls=ef(misc ) Sub=02 Prot=01 MxPS= 9 #Cfgs= 1
> P: Vendor=413c ProdID=81e6 Rev=03.18
> S: Manufacturer=Dell Inc.
> S: Product=DW5829e Snapdragon X20 LTE
> S: SerialNumber=0123456789ABCDEF
> C: #Ifs= 6 Cfg#= 1 Atr=a0 MxPwr=896mA
> I: If#=0x0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=qmi_wwan
> I: If#=0x1 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=usbhid
> I: If#=0x2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
> I: If#=0x3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
> I: If#=0x4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
> I: If#=0x5 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
>
> DW5829e-eSIM MBIM mode:
> T: Bus=04 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 6 Spd=5000 MxCh= 0
> D: Ver= 3.10 Cls=ef(misc ) Sub=02 Prot=01 MxPS= 9 #Cfgs= 2
> P: Vendor=413c ProdID=81e4 Rev=03.18
> S: Manufacturer=Dell Inc.
> S: Product=DW5829e-eSIM Snapdragon X20 LTE
> S: SerialNumber=0123456789ABCDEF
> C: #Ifs= 7 Cfg#= 2 Atr=a0 MxPwr=896mA
> I: If#=0x0 Alt= 0 #EPs= 1 Cls=02(commc) Sub=0e Prot=00 Driver=cdc_mbim
> I: If#=0x1 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim
> I: If#=0x2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
> I: If#=0x3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
> I: If#=0x4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
> I: If#=0x5 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
> I: If#=0x6 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
>
> DW5829e-eSIM RMNET mode:
> T: Bus=04 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 7 Spd=5000 MxCh= 0
> D: Ver= 3.10 Cls=ef(misc ) Sub=02 Prot=01 MxPS= 9 #Cfgs= 1
> P: Vendor=413c ProdID=81e4 Rev=03.18
> S: Manufacturer=Dell Inc.
> S: Product=DW5829e-eSIM Snapdragon X20 LTE
> S: SerialNumber=0123456789ABCDEF
> C: #Ifs= 6 Cfg#= 1 Atr=a0 MxPwr=896mA
> I: If#=0x0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=qmi_wwan
> I: If#=0x1 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=usbhid
> I: If#=0x2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
> I: If#=0x3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
> I: If#=0x4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
> I: If#=0x5 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
>
> BTW, the interface 0x6 of MBIM mode is GNSS port, which not same as NMEA
> port. So it's banned from serial option driver.
> The remaining interfaces 0x2-0x5 are: MODEM, MODEM, NMEA, DIAG.
>
> Signed-off-by: Slark Xiao <slark_xiao@....com>
Thanks for providing all the necessary details.
> ---
> drivers/usb/serial/option.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
> index 962e9943fc20..b47bad810eec 100644
> --- a/drivers/usb/serial/option.c
> +++ b/drivers/usb/serial/option.c
> @@ -198,6 +198,8 @@ static void option_instat_callback(struct urb *urb);
>
> #define DELL_PRODUCT_5821E 0x81d7
> #define DELL_PRODUCT_5821E_ESIM 0x81e0
> +#define DELL_PRODUCT_5829E 0x81e6
> +#define DELL_PRODUCT_5829E_ESIM 0x81e4
Please keep the defines sorted by PID.
> #define KYOCERA_VENDOR_ID 0x0c88
> #define KYOCERA_PRODUCT_KPC650 0x17da
> @@ -1063,6 +1065,10 @@ static const struct usb_device_id option_ids[] = {
> .driver_info = RSVD(0) | RSVD(1) | RSVD(6) },
> { USB_DEVICE(DELL_VENDOR_ID, DELL_PRODUCT_5821E_ESIM),
> .driver_info = RSVD(0) | RSVD(1) | RSVD(6) },
> + { USB_DEVICE_INTERFACE_CLASS(DELL_VENDOR_ID, DELL_PRODUCT_5829E, 0xff),
> + .driver_info = RSVD(6) },
> + { USB_DEVICE_INTERFACE_CLASS(DELL_VENDOR_ID, DELL_PRODUCT_5829E_ESIM, 0xff),
> + .driver_info = RSVD(6) },
It looks like these entries will cause the driver to bind also to the
QMI port however.
> { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_E100A) }, /* ADU-E100, ADU-310 */
> { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_500A) },
> { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_620UW) },
Johan
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