menu "Android"

config ANDROID
	bool "Android Drivers"
	---help---
	  Enable support for various drivers needed on the Android platform

if ANDROID

config ANDROID_BINDER_IPC
	bool "Android Binder IPC Driver"
	depends on MMU
	default n
	---help---
	  Binder is used in Android for both communication between processes,
	  and remote method invocation.

	  This means one Android process can call a method/routine in another
	  Android process, using Binder to identify, invoke and pass arguments
	  between said processes.

config ANDROID_BINDER_IPC_32BIT
	bool
	depends on ANDROID_BINDER_IPC
	default y
	---help---
	  The Binder API has been changed to support both 32 and 64bit
	  applications in a mixed environment.

	  Enable this to support an old 32-bit Android user-space (v4.4 and
	  earlier).

	  Note that enabling this will break newer Android user-space.

config ASHMEM
	bool "Enable the Anonymous Shared Memory Subsystem"
	default n
	depends on SHMEM
	---help---
	  The ashmem subsystem is a new shared memory allocator, similar to
	  POSIX SHM but with different behavior and sporting a simpler
	  file-based API.

	  It is, in theory, a good memory allocator for low-memory devices,
	  because it can discard shared memory units when under memory pressure.

config ANDROID_LOGGER
	tristate "Android log driver"
	default n
	---help---
	  This adds support for system-wide logging using four log buffers.

	  These are:

	      1: main
	      2: events
	      3: radio
	      4: system

	  Log reading and writing is performed via normal Linux reads and
	  optimized writes. This optimization avoids logging having too
	  much overhead in the system.

config ANDROID_TIMED_OUTPUT
	bool "Timed output class driver"
	default y

config ANDROID_TIMED_GPIO
	tristate "Android timed gpio driver"
	depends on GPIOLIB && ANDROID_TIMED_OUTPUT
	default n

config ANDROID_LOW_MEMORY_KILLER
	bool "Android Low Memory Killer"
	---help---
	  Registers processes to be killed when memory is low

config ANDROID_LOW_MEMORY_KILLER_AUTODETECT_OOM_ADJ_VALUES
	bool "Android Low Memory Killer: detect oom_adj values"
	depends on ANDROID_LOW_MEMORY_KILLER
	default y
	---help---
	  Detect oom_adj values written to
	  /sys/module/lowmemorykiller/parameters/adj and convert them
	  to oom_score_adj values.

config ANDROID_INTF_ALARM_DEV
	tristate "Android alarm driver"
	depends on RTC_CLASS
	default n
	---help---
	  Provides non-wakeup and rtc backed wakeup alarms based on rtc or
	  elapsed realtime, and a non-wakeup alarm on the monotonic clock.
	  Also exports the alarm interface to user-space.

config SYNC
	bool "Synchronization framework"
	default n
	select ANON_INODES
	select DMA_SHARED_BUFFER
	---help---
	  This option enables the framework for synchronization between multiple
	  drivers.  Sync implementations can take advantage of hardware
	  synchronization built into devices like GPUs.

config SW_SYNC
	bool "Software synchronization objects"
	default n
	depends on SYNC
	---help---
	  A sync object driver that uses a 32bit counter to coordinate
	  syncrhronization.  Useful when there is no hardware primitive backing
	  the synchronization.

config SW_SYNC_USER
	bool "Userspace API for SW_SYNC"
	default n
	depends on SW_SYNC
	---help---
	  Provides a user space API to the sw sync object.
	  *WARNING* improper use of this can result in deadlocking kernel
	  drivers from userspace.

config EFI_BOOTLOADER_CONTROL
	tristate "EFI Bootloader Control module"
	depends on EFI_VARS
	default n
	help
	  This driver installs a reboot hook, such that if reboot() is
	  invoked with a string argument NNN, "bootonce-NNN" is copied to
	  the EFI variable, to be read by the bootloader. If the string
	  matches one of the boot labels defined in its configuration,
	  the bootloader will boot once to that label.

source "drivers/staging/android/ion/Kconfig"

endif # if ANDROID

endmenu