Android的专用驱动：Ashmem、binder、logger  Ashmem:匿名共享内存驱动 Logger：轻量级的log驱动 Binder：基于OpenBinder驱动，为android平台提供IPC支持。 Android Power Management：定时器驱动，用于唤醒设备   Ashmem路径：      kernel/include/linux/ashmem.h           Kernel/mm/ashmem.c 提供的接口：system/core/include/cutils/ashmem.h          System/core/libcutils/ashmem-dev.c          System/core/libcutils/ashmem-host.c    Binder驱动提供IPC支持，android整个系统的运行依赖binder驱动。           Kernel/include/linux/binder.h           Kernel/drivers/misc/binder.c            Frameworks/base/cmds/servicemanager/          Frameworks/base/include/utils          Frameworks/base/libs/utils Logger驱动的代码：           Kernel/include/linux/logger.h           Kernek/drivers/misc/logger.c            Syste,m/core/logcat   Framebuffer驱动：          Include/linux/fb.h          Drivers/video/fbmem.c   Input驱动：      include/linux/input.h              android/s1/kernel/include/linux（android）          Drivers/input/input.c               /kernel/drivers/input          Drivers/input/evdev.c    Event输入设备驱动 V412摄像头视频驱动:          Include/linux/videodev.h           Include/linux/videodev2.h           Include/media/v412-dev.h           Drivers/media/video/v412-dev.c   OSS(open sound system)音频驱动：           Include/linux/soundcard.h           Include/linux/sound.h           Sound/sound_core.c   ALSA(advanced linux sound architecture高级linux声音体系)音频驱动：            Include/sound/asound.h           Include/sound/core.h            Sound/core/sound.c   MTD(memory technology device内存技术设备)驱动:           Include/linux/mtd/mtd.h            Drivers/mtd/mtdcore.c            Drivers/mtd/mtdchar.c            Drivers/mtd/mtdblock.c   蓝牙驱动:            Include/net/bluetooth/hci_core.h            Include/net/bluetooth/bluetooth.h            Net/bluetooth/*            Drivers/bluetooth/*   Wlan驱动:            Include/net/wireless.h            Net/wireless/*            Drivers/net/wireless/*   I2C驱动：      /kernel/drivers/i2c   触摸屏驱动：          /kernel/drivers/input/touchscreen/*  USB gadget 设备功能介绍
目前usb 主要实现的功能有：adb，mass_storage，mtp，serial，其中框架功能由如下两
个文件实现：
1．drivers/usb/gadget/android.c（包含对RNDIS 的支持）
2．drivers/usb/gadget/composite.c
各个具体的功能则由如下文件实现：
1．drivers/usb/gadget/f_adb.c
2．drivers/usb/gadget/f_mass_storage.c
3．drivers/usb/gadget/f_mtp.c