Re: [PATCH] USB: serial: option: add UNISOC vendor and TOZED LT70C product

["Arınç ÜNAL" <arinc.unal@arinc9.com>]

On 17.04.2023 17:19, Johan Hovold wrote:
> On Mon, Apr 17, 2023 at 01:42:05PM +0300, Arınç ÜNAL wrote:
>> On 13.04.2023 18:14, Johan Hovold wrote:
>>> On Thu, Apr 06, 2023 at 08:50:04AM +0300, arinc9.unal@gmail.com wrote:
>>>> From: Arınç ÜNAL <arinc.unal@arinc9.com>
>>>>
>>>> Add UNISOC vendor ID and TOZED LT70-C modem which is based from UNISOC
>>>> SL8563. The modem supports the NCM mode.
>>>
>>> Thanks for the patch. Looks mostly good, but see my comments below.
>>
>> Thanks a lot for looking at this Johan!
>>
>>>
>>>> T:  Bus=01 Lev=01 Prnt=01 Port=00 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=1782 ProdID=4055 Rev=04.04
>>>> S:  Manufacturer=Unisoc Phone
>>>> S:  Product=Unisoc Phone
>>>> S:  SerialNumber=<redacted>
>>>> C:  #Ifs=14 Cfg#= 1 Atr=c0 MxPwr=500mA
>>>> I:  If#= 0 Alt= 0 #EPs= 1 Cls=02(commc) Sub=0d Prot=00 Driver=cdc_ncm
>>>> E:  Ad=82(I) Atr=03(Int.) MxPS=  16 Ivl=32ms
>>>> I:  If#= 1 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=01 Driver=cdc_ncm
>>>> E:  Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
>>>> E:  Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
>>>> I:  If#=10 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
>>>> E:  Ad=07(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
>>>> E:  Ad=8b(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
>>>> I:  If#=11 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
>>>> E:  Ad=08(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
>>>> E:  Ad=8c(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
>>>> I:  If#=12 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=42 Prot=01 Driver=option
>>>> E:  Ad=09(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
>>>> E:  Ad=8d(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
>>>
>>> This looks like an ADB interface which should be blacklisted (reserved)
>>> so that the driver does not bind to it.
>>
>> Will do.
>>
>>>
>>>> I:  If#=13 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
>>>> E:  Ad=0a(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
>>>> E:  Ad=8e(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
>>>> I:  If#= 2 Alt= 0 #EPs= 1 Cls=02(commc) Sub=0d Prot=00 Driver=cdc_ncm
>>>> E:  Ad=84(I) Atr=03(Int.) MxPS=  16 Ivl=32ms
>>>> I:  If#= 3 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=01 Driver=cdc_ncm
>>>> E:  Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
>>>> E:  Ad=83(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
>>>> I:  If#= 4 Alt= 0 #EPs= 1 Cls=02(commc) Sub=0d Prot=00 Driver=cdc_ncm
>>>> E:  Ad=86(I) Atr=03(Int.) MxPS=  16 Ivl=32ms
>>>> I:  If#= 5 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=01 Driver=cdc_ncm
>>>> E:  Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
>>>> E:  Ad=85(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
>>>> I:  If#= 6 Alt= 0 #EPs= 1 Cls=02(commc) Sub=0d Prot=00 Driver=cdc_ncm
>>>> E:  Ad=88(I) Atr=03(Int.) MxPS=  16 Ivl=32ms
>>>> I:  If#= 7 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=01 Driver=cdc_ncm
>>>> E:  Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
>>>> E:  Ad=87(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
>>>> I:  If#= 8 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
>>>> E:  Ad=05(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
>>>> E:  Ad=89(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
>>>> I:  If#= 9 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
>>>> E:  Ad=06(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
>>>> E:  Ad=8a(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> 
>>>> ---
>>>>    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 f31cc3c76329..65a050a9ca39 100644
>>>> --- a/drivers/usb/serial/option.c
>>>> +++ b/drivers/usb/serial/option.c
>>>> @@ -595,6 +595,11 @@ static void option_instat_callback(struct urb *urb);
>>>>    #define SIERRA_VENDOR_ID			0x1199
>>>>    #define SIERRA_PRODUCT_EM9191			0x90d3
>>>>    
>>>> +/* UNISOC (Spreadtrum) products */
>>>> +#define UNISOC_VENDOR_ID			0x1782
>>>> +/* TOZED TL70-C based on UNISOC SL8563 uses UNISOC's vendor ID */
>>>> +#define TOZED_PRODUCT_LT70C			0x4055
>>>> +
>>>>    /* Device flags */
>>>>    
>>>>    /* Highest interface number which can be used with NCTRL() and RSVD() */
>>>> @@ -2225,6 +2230,7 @@ static const struct usb_device_id option_ids[] = {
>>>>    	{ USB_DEVICE_AND_INTERFACE_INFO(OPPO_VENDOR_ID, OPPO_PRODUCT_R11, 0xff, 0xff, 0x30) },
>>>>    	{ USB_DEVICE_AND_INTERFACE_INFO(SIERRA_VENDOR_ID, SIERRA_PRODUCT_EM9191, 0xff, 0xff, 0x30) },
>>>>    	{ USB_DEVICE_AND_INTERFACE_INFO(SIERRA_VENDOR_ID, SIERRA_PRODUCT_EM9191, 0xff, 0, 0) },
>>>> +	{ USB_DEVICE(UNISOC_VENDOR_ID, TOZED_PRODUCT_LT70C) },
>>>
>>> You should match also on the interface class so that you don't try to
>>> bind to the cdc interfaces. See USB_DEVICE_INTERFACE_CLASS() (and
>>> RSVD() for the ADB interface).
>>
>> Thanks, the final result should look like this:
>>
>> { USB_DEVICE_INTERFACE_CLASS(UNISOC_VENDOR_ID, TOZED_PRODUCT_LT70C, 0xff),
>>     .driver_info = RSVD(12) },
> 
> Alternatively, it looks like you could use
> USB_DEVICE_AND_INTERFACE_INFO() and match on ff/0/0. That's generally
> preferred as it works also if the interface numbers can change.

Sounds good. I also don't need to use RSVD() since this won't match the 
ADB interface if I understand correctly.

I'll send v2 in a short moment.

Arınç