Adding a kernel module for USB wifi adapter

[A Former User]

I assumed correctly. Here is the section referencing Mediatek in the .config that make_defconfig.sh would generate:

CONFIG_WLAN_VENDOR_MEDIATEK=y

Compare the Broadcom (I think) drivers section:

CONFIG_BCMDHD=y
CONFIG_BCM4339=y
CONFIG_BCMDHD_FW_PATH="/vendor/firmware/fw_bcmdhd.bin"
CONFIG_BCMDHD_NVRAM_PATH="/etc/wifi/bcmdhd.cal"

And the Mediatek section in a .config I generated with make ARCH=arm menuconfig:

CONFIG_WLAN_VENDOR_MEDIATEK=y
CONFIG_MT7601U=m

I'll try to simply manually add these two lines to hammerhead_defconfig and cyanogenmod_hammerhead_defconfig for the next build.

[A Former User]

Found this in the mt7601u's Kconfig:

	depends on MAC80211
	depends on USB

mac80211 is something that can be selected in the config menu in Networking support → Wireless. It is not selected by default. When you select it, the mt7601u driver appears in the Mediatek wireless driver section of the menu as it should.

I edited both hammerhead_defconfig and cyanogenmod_hammerhead_defconfig like this (using make_defconfig.sh of course). Building again.

[A Former User]

Build finished. Seemingly no change. Maybe out/ is supposed to be like this. Will flash tomorrow and check.

[A Former User]

Flashed and checked with lsmod, modinfo and find. It looks like, despite everything, the module was still not installed.

[A Former User]

device/lge/hammerhead/BoardConfig.mk confirms that the configuration file I've been working with is the right one:

# Define kernel config for inline building
TARGET_KERNEL_CONFIG := cyanogenmod_hammerhead_defconfig
TARGET_KERNEL_SOURCE := kernel/lge/hammerhead

device/lge/hammerhead/init.hammerhead.rc has something that could be relevant:

  # wifi
    chown wifi system /persist/wifi
    insmod /system/lib/modules/bcmdhd.ko

I'll add another insmod line for mt7601u and see what happens. My guess is it will either break something or do nothing.

[A Former User]

I tried mkap, which failed to push anything to the device, but it did create ./out/target/product/hammerhead/obj/KERNEL_OBJ/include/config/mt7601u.h. I also noticed that all the .h files in obj/KERNEL_OBJ/include/config/ are empty.

Flashed, replaced system image, no change.

[A Former User]

I am literally unable to tell you what happened next, because all my posts are being flagged as spam.

[Emphrath]

@zehkira maybe because of external links. Happens sometimes.

[A Former User]

I'm out of ideas.

[cliffcoggin]

@zehkira I congratulate you on your remarkable persistence, even though I have little understanding of what you have been doing.