Re: wl1271 driver on Linux 3.10 for SabreSD

[Dan Williams <dcbw@redhat.com>]

On Wed, 2014-10-08 at 12:52 -0500, Dan Williams wrote:
> On Wed, 2014-10-08 at 15:37 +0200, CHAUMETTE Hubert wrote:
> > Hi all,
> > 
> > I need to activate the wl12xx driver (from drivers/net/wireless/ti/) on a (Android) Linux 3.10.31 kernel on an i.MX6Q SabreSD board. The wl1271 is to communicate with the board through an SDIO interface (SD2 on the board).
> > 
> > I have built the driver modules (cfg80211 and mac80211; wlcore, wlcore_sdio and wl12xx), and insmod'ed them. They are listed by lsmod :
> > wlcore_sdio 3820 0 - Live 0x00000000
> > wl12xx 51103 0 - Live 0x00000000
> > wlcore 161008 1 wl12xx, Live 0x00000000
> > mac80211 253798 2 wl12xx,wlcore, Live 0x00000000
> > cfg80211 201451 2 wlcore,mac80211, Live 0x00000000
> > 
> > dmesg shows only a message from cfg80211 (no errors for other modules, when insmod'ed in the right order) :
> > cfg80211: Calling CRDA to update world regulatory domain
> 
> Does the SDHCI driver recognize the device?  You should see something
> like this in 'dmesg':
> 
> [78504.888006] sdhci-pci 0000:44:06.1: Will use DMA mode even though HW
> doesn't fully claim to support it.
> [78536.520725] mmc0: new SDIO card at address 0001
> [78536.540309] libertas_sdio: Libertas SDIO driver
> [78536.540313] libertas_sdio: Copyright Pierre Ossman
> 
> If you don't see "mmc0: new SDIO card..." somewhere, then the wl1271
> driver isn't even involved and you need to find out why the SD/MMC layer
> can't even see the card.
> 
> Once you've got it to the point of the SD/MMC stack finding the driver,

I meant "finding the card" here, not "driver".

> find out the VID/PID of the card (it'll be somewhere
> in /sys/bus/sdio/devices/), and make sure that matches what's in the
> wl1271 SDIO driver (VID 0x0097 PID 0x4076).  If your device doesn't
> match that, add it to wlcore/sdio.c's wl1271_devices array.
> 
> Dan
> 
> > 1) Can I use /sys/modules/{wlcore,wlcore_sdio,wl12xx}/ to test it ?
> > 2) The board uses the device tree to enumerate platform devices. To correctly activate the driver, do I need to add it to the board DT (and a binding to the driver) ?
> > 3) The driver is supposed to use a firmware (according to http://wireless.kernel.org/en/users/Drivers/wl12xx), how do I know whether it found it (no kernel log message) (I've put the firmware in /system/etc/firmware/) ?
> > 
> > Thanks in advance.
> > Regards,
> > 
> > Hubert
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> 
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