[Buildroot] Drivers for Realtek WLAN dongles

[Buildroot] Drivers for Realtek WLAN dongles

[Stephan Hoffmann]

Hello all,

did anyone download and compile drivers from realtek's website using
buildroot?

While
http://www.armadeus.com/wiki/index.php?title=USB_to_WiFi_adapter#Chipset_RTL8188CUS
gives a recipe to do this by hand I need an integration in buildroot for
my current project.

I searched the web but did not find anything, but maybe someone has a
not yet published solution. If not I will start my own patchset for this.

Kind regards

Stephan

-- 
reLinux     -    Stephan Hoffmann
Am Schmidtgrund 124    50765 K?ln
Tel. +49.221.95595-19    Fax: -64
www.reLinux.de Stephan at reLinux.de

[Buildroot] Drivers for Realtek WLAN dongles

[Thomas Petazzoni]

Dear Stephan Hoffmann,

On Mon, 30 Jun 2014 11:35:34 +0200, Stephan Hoffmann wrote:

> did anyone download and compile drivers from realtek's website using
> buildroot?
> 
> While
> http://www.armadeus.com/wiki/index.php?title=USB_to_WiFi_adapter#Chipset_RTL8188CUS
> gives a recipe to do this by hand I need an integration in buildroot for
> my current project.
> 
> I searched the web but did not find anything, but maybe someone has a
> not yet published solution. If not I will start my own patchset for this.

Are you sure you need an out-of-tree driver for this? I see the
mainline rtlwifi driver supports a number of rtl8188cus dongles. Which
specific model do you have? Which USB vendor/product ID?

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

[Buildroot] Drivers for Realtek WLAN dongles

[Baruch Siach]

Hi Thomas,

On Mon, Jun 30, 2014 at 12:17:35PM +0200, Thomas Petazzoni wrote:
> On Mon, 30 Jun 2014 11:35:34 +0200, Stephan Hoffmann wrote:
> > did anyone download and compile drivers from realtek's website using
> > buildroot?
> > 
> > While
> > http://www.armadeus.com/wiki/index.php?title=USB_to_WiFi_adapter#Chipset_RTL8188CUS
> > gives a recipe to do this by hand I need an integration in buildroot for
> > my current project.
> > 
> > I searched the web but did not find anything, but maybe someone has a
> > not yet published solution. If not I will start my own patchset for this.
> 
> Are you sure you need an out-of-tree driver for this? I see the
> mainline rtlwifi driver supports a number of rtl8188cus dongles. Which
> specific model do you have? Which USB vendor/product ID?

Some mainline Realtek WiFi drivers do not support AP mode properly, 
unfortunately. See 
http://lists.shmoo.com/pipermail/hostap/2014-June/030533.html. So there is a 
use case for out of tree drivers like https://github.com/robertalks/rt8192cu.

baruch

-- 
     http://baruch.siach.name/blog/                  ~. .~   Tk Open Systems
=}------------------------------------------------ooO--U--Ooo------------{=
   - baruch at tkos.co.il - tel: +972.2.679.5364, http://www.tkos.co.il -

[Buildroot] Drivers for Realtek WLAN dongles

[Stephan Hoffmann]

Hello Thomas!
On 30.06.2014 12:17, Thomas Petazzoni wrote:
> Dear Stephan Hoffmann,
>
> On Mon, 30 Jun 2014 11:35:34 +0200, Stephan Hoffmann wrote:
>
>> did anyone download and compile drivers from realtek's website using
>> buildroot?
>>
>> While
>> http://www.armadeus.com/wiki/index.php?title=USB_to_WiFi_adapter#Chipset_RTL8188CUS
>> gives a recipe to do this by hand I need an integration in buildroot for
>> my current project.
>>
>> I searched the web but did not find anything, but maybe someone has a
>> not yet published solution. If not I will start my own patchset for this.
> Are you sure you need an out-of-tree driver for this? I see the
> mainline rtlwifi driver supports a number of rtl8188cus dongles. Which
> specific model do you have? Which USB vendor/product ID?
I am stuck to the 3.0.35 kernel for i.MX6 because the board vendor did
not provide a more recent kernel yet.

I tried the driver that the kernel loads when I plugged in the dongle,
that is (on the buildroot system)

# lsmod
Module                  Size  Used by    Not tainted
rtl8192cu              90081  0
rtlwifi                65735  1 rtl8192cu
rtl8192c_common        53218  1 rtl8192cu
mac80211              153566  3 rtl8192cu,rtlwifi,rtl8192c_common

lsusb on my development workstation says: ID 0bda:8176 Realtek
Semiconductor Corp. RTL8188CUS 802.11n WLAN Adapter

The driver brings up wlan0, looking good at the first view, but
wpa_supplicant cannot connect to the AP.

Using realtek's out-of-tree driver that I built by hand (named 8192cu)
the connection works well with nothing else changed. So my conclusion is
that the built in driver does not work for this dongle.

BTW: it is the 150 MBps dongle from CSL-Computer.com.

Kind regards

Stephan
>
> Thomas


-- 
reLinux     -    Stephan Hoffmann
Am Schmidtgrund 124    50765 K?ln
Tel. +49.221.95595-19    Fax: -64
www.reLinux.de Stephan at reLinux.de