高通开发笔记一

[xiaozhu12371237]

1.CIT暗码：*#*#00#*#*,*#*#564548#*#*  *#889#

2.修改TP方向：echo 1 > sys/class/input/input0/device/flipx

3.修改手机方向分辨率：
    编译：device/qcom/d801/system.prop（ro.sf.lcd_density = 120  （没有就自己添加，120是240X320））
    persist.panel.orientation = 180    
    手机：system/build.prop修改权限644
4.搜索目录下文件中的字符串：grep -nr "mdss_wb_panel" ./arch/arm/boot/dts/
  搜索grep -r --include=*.c "qcom,camera-led-flash" .
5.反编译设备树文件product/q39/obj/KERNEL_OBJ$  ./scripts/dtc/dtc -I dtb -O dts -o ABC.dts arch/arm64/boot/dts/q39.dtb
6.手机的照片存储位置:adb pull /storage/sdcard0/DCIM/Camera/
            截屏的照片    ?/?/Pictures/Screenshots
7.使能虚拟按键：device/qcom/d801/ overlay/frameworks/base/core/res/res/values/config.xml    
        +   <bool name="config_showNavigationBar">true</bool> 
        build.prop  +  qemu.hw.mainkeys=0

8.固化TP方向参数：device/qcom/d801/init.target.rc
        +    write /sys/class/input/input1/device/flipx 1

9.修改logo图片： device/qcom/d801/logo.png,使用 python logo_gen.py logo.png生成splash.img下载splash.img,device/qcom/common/display/logo
10.在d801_defconfig中添加CONFIG_ARCH_MSM8226_D801=y，
需要在arch/arm/mach-msm/Kconfig中添加：才能使用
config ARCH_MSM8226_D801
       depends on ARCH_MSM8226
       default n
       bool "D801 product"
       help
         Macro for the MSM8226 D801 product

若添加CONFIG_TOUCHSCREEN_HANVON0868=y，
需要在drivers/input/touchscreen/Kconfig中添加才能使用
config TOUCHSCREEN_HANVON0868
       tristate "HANVON0868 I2C touchscreen"
       depends on I2C
       help
         Say Y here if you have a HANVON0868 I2C touchscreen
         connected to your system.

         If unsure, say N.

         To compile this driver as a module, choose M here: the
         module will be called hanvon0868.

11. TP固件firmware位置 ./device/qcom/d508/HD508-A-s3202_PR1521505.img

12. sensor不检查g-sensor
    sensors_qcom_hal.c------>_hal_sensors_get_sensors_list()
        // hal_sam_add_sensor_fusion_sensors();
        //hal_sam_add_step_detector_sensor();
        // hal_sam_add_step_counter_sensor();
13. 编译模块:mmm有Android.mk的目录vendor/qcom/proprietary/sensors/dsps/libhalsensors
13. SD卡自动检测:
    d801.dtsi add:
    &sdhc_2 {
        interrupt-map = <0 &intc 0 125 0
                1 &intc 0 221 0
                2 &msmgpio 51 0x3>;
        cd-gpios = <&msmgpio 51 0x1>;
    };
    board-8226-gpiomux.c msm_gpiomux_config sd_card_det __initdata  

14. PWM方式背光闪屏: 
    qpnp-pwm.c中去掉mdelay(1)
    
15. 按键键值映射:
    进入adb shell,输入getevent,按下按键 ,查看键值和设备,去代码中找