wl18xx integration for Android 4.4.4 with Kernel-3.2

Hi,
Can you check your kernel .config and verify that CONFIG_CRYPTO_GCM is selected? (=y)
In case it is not, it could explain why only part of the modules were built.
BR,
Eyal

Hi Eyal,

Thank you for the quick reply.

In my .config it was not enabled, now i enabled it, then the wlcore driver Makefile including and compiling.

But I am facing errors while compiling the wlcore driver. I hope it is because of the driver is compatible for higher version than 3.2.

Which tag should i checkout for 3.2 kernel ?

my present git tag is :  android-cts-4.4_r4-13-g9540069

My git HEAD is 

commit 95400695306cba64700d97bb7e446b3b5e871a37
Author: Vishal Mahaveer <vishalm@ti.com>
Date: Tue Jul 28 11:43:17 2015 -0500

wlan: wpa_supplicant_lib: fix libnl build

Fix build issue for libnl

Change-Id: Ia18add657f02758e1c2209b77cb7f8d1c61be5b9
Signed-off-by: Vishal Mahaveer <vishalm@ti.com>

Error Log : 
~~~~~~~~~

$ make
make[5]: `conf' is up to date.
boolean symbol HWMON tested for 'm'? test forced to 'n'
boolean symbol HWMON tested for 'm'? test forced to 'n'
#
# configuration written to .config
#
Building backport-include/backport/autoconf.h ... done.
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/compat/main.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/compat/compat-3.3.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/compat/compat-3.4.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/compat/compat-3.5.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/compat/user_namespace.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/compat/compat-3.6.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/compat/compat-3.7.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/compat/compat-3.8.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/compat/compat-3.9.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/compat/backport-3.10.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/compat/backport-3.12.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/compat/backport-3.13.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/compat/backport-3.14.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/compat/backport-3.15.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/compat/backport-3.17.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/compat/backport-3.18.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/compat/backport-3.19.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/compat/backport-4.1.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/compat/dma-shared-helpers.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/compat/lib-rhashtable.o
LD [M] hardware/ti/wlan/mac80211/compat_wl18xx/compat/compat.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/drivers/net/wireless/ti/wl12xx/main.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/drivers/net/wireless/ti/wl12xx/cmd.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/drivers/net/wireless/ti/wl12xx/acx.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/drivers/net/wireless/ti/wl12xx/debugfs.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/drivers/net/wireless/ti/wl12xx/scan.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/drivers/net/wireless/ti/wl12xx/event.o
LD [M] hardware/ti/wlan/mac80211/compat_wl18xx/drivers/net/wireless/ti/wl12xx/wl12xx.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/drivers/net/wireless/ti/wl18xx/main.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/drivers/net/wireless/ti/wl18xx/acx.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/drivers/net/wireless/ti/wl18xx/tx.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/drivers/net/wireless/ti/wl18xx/io.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/drivers/net/wireless/ti/wl18xx/debugfs.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/drivers/net/wireless/ti/wl18xx/scan.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/drivers/net/wireless/ti/wl18xx/cmd.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/drivers/net/wireless/ti/wl18xx/event.o
LD [M] hardware/ti/wlan/mac80211/compat_wl18xx/drivers/net/wireless/ti/wl18xx/wl18xx.o
CC [M] hardware/ti/wlan/mac80211/compat_wl18xx/drivers/net/wireless/ti/wlcore/main.o
hardware/ti/wlan/mac80211/compat_wl18xx/drivers/net/wireless/ti/wlcore/main.c: In function 'wlcore_time_sync_hrtimer_cb':
hardware/ti/wlan/mac80211/compat_wl18xx/drivers/net/wireless/ti/wlcore/main.c:6176:2: error: implicit declaration of function 'ktime_compare' [-Werror=implicit-function-declaration]
cc1: some warnings being treated as errors
make[8]: *** [hardware/ti/wlan/mac80211/compat_wl18xx/drivers/net/wireless/ti/wlcore/main.o] Error 1
make[7]: *** [hardware/ti/wlan/mac80211/compat_wl18xx/drivers/net/wireless/ti/wlcore] Error 2
make[6]: *** [hardware/ti/wlan/mac80211/compat_wl18xx/drivers/net/wireless/ti] Error 2
make[5]: *** [hardware/ti/wlan/mac80211/compat_wl18xx/drivers/net/wireless] Error 2
make[4]: *** [_module_hardware/ti/wlan/mac80211/compat_wl18xx] Error 2
make[3]: *** [modules] Error 2
make[2]: *** [modules] Error 2
make[1]: *** [modules] Error 2
make: *** [default] Error 2

Thanks in advance..

regards,
Bhaskar

Hi,

You can actually apply this commit on your compat_wl18xx driver directory:
git.ti.com/.../

There was a time sync demo feature that was later removed which used this API that is probably not present in the 3.2 kernel.
this commit removed this code.
It is best to just remove it and it should allow you to continue your build. You don't use it anyway.

BR,
Eyal

Hi Eyal,

I added this ktime_compare API in include/linux/ktime.h, Now driver got compiled without any error.
But when i insert the drivers, I am facing the below issue.

Log File : 
~~~~~~~

# dmesg | grep mmc1
[ 2.475091] mmc1: card claims to support voltages below the defined range. These will be ignored.
[ 2.527535] mmc1: queuing unknown CIS tuple 0x91 (3 bytes)
[ 2.534543] mmc1: new high speed SDIO card at address 0001

# lsmod
Module Size Used by
wl18xx 76061 0
wlcore 170180 1 wl18xx
mac80211 523730 2 wl18xx,wlcore
cfg80211 411066 3 wl18xx,wlcore,mac80211
compat 23218 4 wl18xx,wlcore,mac80211,cfg80211
#
# insmod wlcore_sdio.ko

[ 133.605120] wl1271_sdio: probe of mmc1:0001:2 failed with error -12

The module is working with same platfrom data without Android (only Linux with yocto rootfs).

could you please tell me, what might be the issue ? 

Thanks in advance..

Best regards,
Bhaskar

Hi,

Are you using the same .dts file between the linux build that works and the android one?
I believe the issue is that the drivers fail to locate the "wlcore" subnode inside the mmc1 node in the android .dts file.

BR,
Eyal

HI Eyal,

I am not using DTS in both the Linux and Android.
My kernel version is 3.2 So I am using platform data in board file.
My both kernel board files are same for Linux and Android.

what i observed is, the problem in driver file, it is looking for oftree node structure in Android driver code.
So i want to know is, which git tag i should use for Linux-3.2. So that i can compile the drivers with that driver.

For Linux i am using,
wlcore: driver version: ol_r8.a8.04_32-dirty (it is working good)
For Android i am using,
Backport generated by backports.git R8.6-0-g4677dc3 (driver not loading)

So, i want to know the perfect tag for 3.2 kernel for Android-4.4.4.

Could you please tell me the git tag for Linux-3.2 ?

Thanks & Regards,
Bhaskar

Hi Bhaskar,

In general, I always recommend using the latest drivers which are currently R8.7_SP1
What you are using for android is fairly new (R8.6)
Your issue may be related to the fact that starting from R8.6 a due to change in mainline the "wlcore" node parameters are now a sub-node inside the mmc node. So this may be where your board file is failing.
As we don't work with board files for a long time already, I can't be more specific but I suggest you put some debug prints inside:

git.ti.com/.../sdio.c

and check the wl1271_probe() function to see where it fails.

BR,
Eyal

Hi Eyal,

I found wl18xx back-port drivers for 3.2 kernel. Now all the drivers loaded and also interface is up by using adb shell.

# lsmod
wlcore_sdio 3482 0 - Live 0x00000000 (O)
wl18xx 56963 0 - Live 0x00000000 (O)
wlcore 161315 1 wl18xx, Live 0x00000000 (O)
omaplfb 12412 0 - Live 0x00000000 (O)
mac80211 410223 2 wl18xx,wlcore, Live 0x00000000 (O)
pvrsrvkm 180836 43 omaplfb, Live 0x00000000 (O)
cfg80211 187321 3 wl18xx,wlcore,mac80211, Live 0x00000000 (O)
compat 1867 4 wlcore_sdio,wl18xx,mac80211,cfg80211, Live 0x00000000 (O)

# netcfg
lo UP 127.0.0.1/8 0x00000049 00:00:00:00:00:00
sit0 DOWN 0.0.0.0/0 0x00000080 00:00:00:00:00:00
wlan0 DOWN 0.0.0.0/0 0x00001002 5c:31:3e:e3:38:9c

# netcfg wlan0 up
[ 56.120841] wlcore: PHY firmware version: Rev 8.2.0.0.168
[ 56.213976] wlcore: firmware booted (Rev 8.6.0.0.5)
[ 56.234364] ADDRCONF(NETDEV_UP): wlan0: link is not ready

# netcfg
lo UP 127.0.0.1/8 0x00000049 00:00:00:00:00:00
sit0 DOWN 0.0.0.0/0 0x00000080 00:00:00:00:00:00
wlan0 UP 0.0.0.0/0 0x00001003 5c:31:3e:e3:38:9c

But when i turn on the wifi through settings, it is showing only "Turning Wi-Fi on....."
Below is logcat what i am getting..

# logcat | grep wpa
E/WifiHW ( 391): Unable to open connection to supplicant on "@android:wpa_wlan0": No such file or directory
I/wpa_supplicant( 447): Successfully initialized wpa_supplicant
I/wpa_supplicant( 812): Successfully initialized wpa_supplicant

where the supplicant searching this @android:wpa_wlan0 ?

could you please help me in this ?

Thanks & Regars,
Bhaskar