drivers/staging/android/Kconfig

   1 menu "Android"
   2
   3 config ANDROID
   4         bool "Android Drivers"
   5         ---help---
   6           Enable support for various drivers needed on the Android platform
   7
   8 if ANDROID
   9
  10 config ANDROID_BINDER_IPC
  11         bool "Android Binder IPC Driver"
  12         depends on MMU
  13         default n
  14         ---help---
  15           Binder is used in Android for both communication between processes,
  16           and remote method invocation.
  17
  18           This means one Android process can call a method/routine in another
  19           Android process, using Binder to identify, invoke and pass arguments
  20           between said processes.
  21
  22 config ASHMEM
  23         bool "Enable the Anonymous Shared Memory Subsystem"
  24         default n
  25         depends on SHMEM
  26         ---help---
  27           The ashmem subsystem is a new shared memory allocator, similar to
  28           POSIX SHM but with different behavior and sporting a simpler
  29           file-based API.
  30
  31           It is, in theory, a good memory allocator for low-memory devices,
  32           because it can discard shared memory units when under memory pressure.
  33
  34 config ANDROID_LOGGER
  35         tristate "Android log driver"
  36         default n
  37         ---help---
  38           This adds support for system-wide logging using four log buffers.
  39
  40           These are:
  41
  42               1: main
  43               2: events
  44               3: radio
  45               4: system
  46
  47           Log reading and writing is performed via normal Linux reads and
  48           optimized writes. This optimization avoids logging having too
  49           much overhead in the system.
  50
  51 config ANDROID_TIMED_OUTPUT
  52         bool "Timed output class driver"
  53         default y
  54
  55 config ANDROID_TIMED_GPIO
  56         tristate "Android timed gpio driver"
  57         depends on GPIOLIB && ANDROID_TIMED_OUTPUT
  58         default n
  59
  60 config ANDROID_LOW_MEMORY_KILLER
  61         bool "Android Low Memory Killer"
  62         ---help---
  63           Registers processes to be killed when memory is low
  64
  65 config ANDROID_INTF_ALARM_DEV
  66         bool "Android alarm driver"
  67         depends on RTC_CLASS
  68         default n
  69         ---help---
  70           Provides non-wakeup and rtc backed wakeup alarms based on rtc or
  71           elapsed realtime, and a non-wakeup alarm on the monotonic clock.
  72           Also exports the alarm interface to user-space.
  73
  74 config SYNC
  75         bool "Synchronization framework"
  76         default n
  77         select ANON_INODES
  78         ---help---
  79           This option enables the framework for synchronization between multiple
  80           drivers.  Sync implementations can take advantage of hardware
  81           synchronization built into devices like GPUs.
  82
  83 config SW_SYNC
  84         bool "Software synchronization objects"
  85         default n
  86         depends on SYNC
  87         ---help---
  88           A sync object driver that uses a 32bit counter to coordinate
  89           syncrhronization.  Useful when there is no hardware primitive backing
  90           the synchronization.
  91
  92 config SW_SYNC_USER
  93         bool "Userspace API for SW_SYNC"
  94         default n
  95         depends on SW_SYNC
  96         ---help---
  97           Provides a user space API to the sw sync object.
  98           *WARNING* improper use of this can result in deadlocking kernel
  99           drivers from userspace.
 100
 101 endif # if ANDROID
 102
 103 endmenu