The android_lights_framework from koh84

android_lights_framework's Introduction

@modified lights from sony files
@hence, recompiled to  get system.img

@used previous build linux kernel
+ modification to kernel was leds_4412.c under linux-3.0.86/drivers/leds
the difference is that this hal driver can be accessed using 

echo 255>sys/class/leds/led1/brightness
cat /sys/class/leds/led1/brightness
cat /sys/class/leds/led1/max_brightness

echo timer>/sys/class/leds/led1/trigger
echo 100>/sys/class/leds/led1/delay_on
echo 200>/sys/class/leds/led1/delay_off

Also modify the led-class.c 0644 to 0666 to allow us to use access the above command line parameter
Also modify the ledtrig-timer.c 0644 to 0666 to allow us to use access the above command line parameter

put leds_4412.c inside drivers/leds
modify drivers/leds/Makefile:
obj-y += leds_4412.o

make menuconfig

CONFIG_LEDS_CLASS
CONFIG_LEDS_TRIGGERS
CONFIG_LEDS_TRIGGER_TIMER

-> Device Drivers
  -> LED Support
   [*]   LED Class Support    
   [*]   LED Trigger support
   <*>   LED Timer Trigger

make zImage


HAL: lights.c
put files inside
hardware/libhardware/modules/lights/lights.c
hardware/libhardware/modules/lights/Android.mk


LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE := lights.tiny4412

# HAL module implementation stored in
# hw/<VIBRATOR_HARDWARE_MODULE_ID>.default.so
LOCAL_MODULE_RELATIVE_PATH := hw
LOCAL_C_INCLUDES := hardware/libhardware
LOCAL_SRC_FILES := lights.c
LOCAL_SHARED_LIBRARIES := liblog
LOCAL_MODULE_TAGS := eng

include $(BUILD_SHARED_LIBRARY)

make hardware/libhardware/modules/lights -B
make snod

compare generated .so file with friendlyarm given lights.so
diff vendor/friendly-arm/tiny4412/proprietary/lights.tiny4412.so out/target/product/tiny4412/system/lib/hw/lights.tiny4412.so 

./gen-img.sh

after bootup

use the following command
logcat lights:V *:S

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