Pengutronix BSP Mini2440 and wpa_supplicant

Hi all,

I try to set up a wireless connection on my Mini2440 with kernel 3.4 and
OSELAS BSP. As USB sticks i have TP-Link WN721N and WN821N.

I activated the Atheros ath9 driver and build in the kernel the firmware
blobs htc_9271.fw and htc_7010.fw preventing them from being build (got no
source for the firmware). I also activated LED features and so on for this
and also many other wireless drivers.

When i plug in the stick i got this response:

usb 1-1.3: new full-speed USB device number 4 using s3c2410-ohci
usb 1-1.3: not running at top speed; connect to a high speed hub
usb 1-1.3: New USB device found, idVendor=0cf3, idProduct=9271
usb 1-1.3: New USB device strings: Mfr=16, Product=32, SerialNumber=48
usb 1-1.3: Product: USB2.0 WLAN
usb 1-1.3: Manufacturer: ATHEROS
usb 1-1.3: SerialNumber: 12345
usb 1-1.3: ath9k_htc: Firmware htc_9271.fw requested
usb 1-1.3: ath9k_htc: Transferred FW: htc_9271.fw, size: 51272
ath9k_htc 1-1.3:1.0: ath9k_htc: HTC initialized with 33 credits
ath9k_htc 1-1.3:1.0: ath9k_htc: FW Version: 1.3
ieee80211 phy3: Atheros AR9271 Rev:1

Looks good to me so far.

wpa_supplicant.conf:
network={
        ssid="caro"
        key_mgmt=NONE
        wep_key0=510C78B...and so on ;-)
        wep_tx_keyidx=0
        priority=5
}

When i try the command:

wpa_supplicant -D wext -i wlan0 -c /etc/wpa_supplicant.conf

i get the answer:

rfkill: Cannot open RFKILL control device
ADDRCONF(NETDEV_UP): wlan0: link is not ready

When entering the following:

ifconfig wlan0 192.168.0.50 up
wpa_supplicant -D wext -i wlan0 -c /etc/wpa_supplicant.conf

only:

rfkill: Cannot open RFKILL control device

I tried to enable RFKILL in the kernel (/proc/config.gz says it is not
enabled), but could not find an option or flag for it in the kernel menu.
When i manually enable it in the kernels .config (CONFIG_RFKILL=y) it would
be overwritten during compiling.

So what i do wrong and how can i solve this?

The firmware blobs are from
http://git.kernel.org/?p=linux/kernel/git/firmware/linux-firmware.git.
Are they byte code or native code for the sticks controller. I wonder not
to find any source code for it.

I read a lot in the web but can't find how to enable rfkill or solve my
problem in another way.

Thanks in advance,

Titus

Run the "ptxdist kernelconfig" and enter the '/' char, then enter RFKILL
and the kernel dialogue will show you where RFKILL is located. Seems it is
some GPIO or switch which can enable/disable the receiver/transmitter.

Hi Juergen,

thank you!

Yes, it is a GPIO.

It is located under Networking support - RF switch subsystem support - GPIO
RFKILL

Additionally i have to enable Broadcom BF43xx Support, i don't know why,
but have read that in internet.

And also i don't know understand why the stick acts under wlan2 where wlan0
and wlan1 has no devices, but it works now for TP-Link WN721N and WN821N
;-)

Good night,

Titus