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Re: Developing a new Driver

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On 11 March 2015 at 00:15, Jonas Gorski <jogo@xxxxxxxxxxx> wrote:
> On Wed, Mar 11, 2015 at 12:08 AM, Pat Erley <pat-lkml@xxxxxxxxx> wrote:
>> On 03/10/2015 04:42 PM, Huseyin wrote:
>>> I want to develop a driver for my usb wireless adapter. The device name is
>>> AirTies Air 2410, codes are 0x1eda 0x2410. The company’s other usb wireless
>>> adapters (for example, AirTies Air 2310, 0x1eda 0x2310) were using ralink
>>> rt2800 driver, but this one doesn’t work with it.
>>>
>>> I opened up the device’s case, I could only find out that the board was
>>> plotech e169497, 6 94v-0. I googled but these seem to be too vague and I
>>> cannot go any further with it. I couldn’t find any other text on the board.
>>
>> Based on their driver, it's a broadcom chip in there:
>>
>>
>>   inflating:
>> AirTiesWirelessUSBAdapterSetup_1.0.1.0/Drivers/Air2410-Air2411/VistaDriver/bcmh43xx.cat
>>   inflating:
>> AirTiesWirelessUSBAdapterSetup_1.0.1.0/Drivers/Air2410-Air2411/VistaDriver/bcmihvsrv.dll
>>   inflating:
>> AirTiesWirelessUSBAdapterSetup_1.0.1.0/Drivers/Air2410-Air2411/VistaDriver/bcmihvui.dll
>>   inflating:
>> AirTiesWirelessUSBAdapterSetup_1.0.1.0/Drivers/Air2410-Air2411/VistaDriver/bcmwlcoi.dll
>>   inflating:
>> AirTiesWirelessUSBAdapterSetup_1.0.1.0/Drivers/Air2410-Air2411/VistaDriver/bcmwlhigh6.inf
>>   inflating:
>> AirTiesWirelessUSBAdapterSetup_1.0.1.0/Drivers/Air2410-Air2411/VistaDriver/bcmwlhigh6.sys
>>   inflating:
>> AirTiesWirelessUSBAdapterSetup_1.0.1.0/Drivers/Air2410-Air2411/VistaDriver/WdfCoInstaller01005.dll
>>
>> I don't know what the status of broadcom and usb drivers is though.
>
> According to wikidevi[1], it uses BCM4323, which is SSB based, quite
> old, and will never be supported by brcmfmac, and probably never by
> b43 (one would need to reverse engineer the usb protocol used by
> broadcom).
>
>
> Jonas
>
> [1] https://wikidevi.com/wiki/AirTies_Air_2410

This is for sure some kind of FullMAC device, it's just not clear if:
1) It's a standard nice FullMAC device
2) Device using another architecture requiring much more code on host

I guess it's the second case, you can see info about it on wiki page:
https://wireless.wiki.kernel.org/en/users/drivers/brcm80211#unsupported_chips

If you think it's fun, you may use my tiny libusb app to read hardware info:
http://permalink.gmane.org/gmane.linux.kernel.wireless.general/117924
(if you do, let us know what you got, please)

-- 
Rafał
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