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From: =?UTF-8?B?UmFmYcWCIE1pxYJlY2tp?= <zajec5@gmail.com>
Date: Tue, 12 Jul 2016 23:10:38 +0200
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Subject: Re: building brcmfmac driver for iMX6 Ultralite platform
To: Michael Eskowitz <MichaelE@inventeksys.com>
Cc: Arend Van Spriel <arend.vanspriel@broadcom.com>,
	"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>
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On 12 July 2016 at 21:17, Michael Eskowitz <MichaelE@inventeksys.com> wrote:
> Arend,

What about my reply? ;)


> That is news to me.  I was under the impression that bcmdhd was Broadcom's
> proprietary (closed source) Linux driver and brcmfmac was the open source
> Linux driver.

Don't top post. It's hard to say what you're replying to. bcmdhd is
also open source (not sure what license), just not mainline.


> Either way, I am now running
>
>         insmod  brcmutil.ko
>         insmod  brcmfmac.ko
>
> I receive no errors and no kernel messages.
>
> When I insert the 43341 module into the SDIO slot nothing happens.  I'm
> guessing that the version of the brcmfmac driver that I built does not
> support that chip.

Is is detected by the system? If so, what ID does it use?


> When I insert the 43362 module into the SDIO slot I receive the following
> errors
>
>         mmc0: queuing unknown CIS tuple 0x80 (7 bytes)
>         mmc0: new high speed SDIO card at address 0001
>         brcmfmac: brcmf_c_preinit_dcmds: Firmware version = wl0: Jun  7 2012
> 18:27:16 version 5.90.225 FWID 01-d8fe14bd
>         brcmfmac: brcmf_fil_cmd_data: Failed err=-23
>         brcmfmac: brcmf_fil_cmd_data: Failed err=-23
>         brcmfmac: brcmf_fil_cmd_data: Failed err=-23
>         brcmfmac: brcmf_fil_cmd_data: Failed err=-23
>         brcmfmac: brcmf_add_if: ERROR: netdev:wlan0 already exists
>         brcmfmac: brcmf_add_if: ignore IF event
>         brcmfmac: brcmf_fil_cmd_data: Failed err=-23
>         brcmfmac: brcmf_construct_reginfo: channel 1: f=2412 bw=0
> sb=-1998840228
>         brcmfmac: brcmf_construct_reginfo: channel 2: f=2417 bw=0
> sb=-1998840228
>
> and suddenly ifconfig shows the interface wlan0.  The interface looks to be
> valid as it is displaying a MAC from our address range.
>
> Although the interface wlan0 is present I am not able to use wl commands to
> scan for networks.  wl reports "wl driver adapter not found" for all command
> arguments.  If I run the command
>
>         iwlist  wlan0  scan
>
> I'm told that the interface does not support scanning.  If I run wpa_cli and
> then the commands scan and scanresults I don't see any networks.

"wl" user space tool uses wlioctl, proprietary protocol, brcmfmac
doesn't support it.

iwlist uses wext protocol, legacy one.

Please use nl80211 based tools, e.g. "iw".