Greg Kroah-Hartman | 355b050 | 2011-11-30 20:18:14 +0900 | [diff] [blame] | 1 | menu "Android" |
| 2 | |
| 3 | config ANDROID |
| 4 | bool "Android Drivers" |
Greg Kroah-Hartman | 355b050 | 2011-11-30 20:18:14 +0900 | [diff] [blame] | 5 | default N |
| 6 | ---help--- |
| 7 | Enable support for various drivers needed on the Android platform |
| 8 | |
| 9 | if ANDROID |
| 10 | |
| 11 | config ANDROID_BINDER_IPC |
| 12 | bool "Android Binder IPC Driver" |
Chen Gang | 31507f7 | 2013-09-02 17:11:57 +0800 | [diff] [blame] | 13 | depends on MMU |
Greg Kroah-Hartman | 355b050 | 2011-11-30 20:18:14 +0900 | [diff] [blame] | 14 | default n |
Cruz Julian Bishop | d7f9729 | 2012-12-22 09:00:46 +1000 | [diff] [blame] | 15 | ---help--- |
| 16 | Binder is used in Android for both communication between processes, |
| 17 | and remote method invocation. |
| 18 | |
| 19 | This means one Android process can call a method/routine in another |
| 20 | Android process, using Binder to identify, invoke and pass arguments |
| 21 | between said processes. |
Greg Kroah-Hartman | 355b050 | 2011-11-30 20:18:14 +0900 | [diff] [blame] | 22 | |
Robert Love | 11980c2 | 2011-12-20 16:49:48 -0800 | [diff] [blame] | 23 | config ASHMEM |
| 24 | bool "Enable the Anonymous Shared Memory Subsystem" |
| 25 | default n |
Paul Bolle | 2c0fb1c | 2013-03-14 10:41:39 +0100 | [diff] [blame] | 26 | depends on SHMEM |
Cruz Julian Bishop | d7f9729 | 2012-12-22 09:00:46 +1000 | [diff] [blame] | 27 | ---help--- |
Robert Love | 11980c2 | 2011-12-20 16:49:48 -0800 | [diff] [blame] | 28 | The ashmem subsystem is a new shared memory allocator, similar to |
| 29 | POSIX SHM but with different behavior and sporting a simpler |
| 30 | file-based API. |
| 31 | |
Cruz Julian Bishop | d7f9729 | 2012-12-22 09:00:46 +1000 | [diff] [blame] | 32 | It is, in theory, a good memory allocator for low-memory devices, |
| 33 | because it can discard shared memory units when under memory pressure. |
| 34 | |
Greg Kroah-Hartman | 355b050 | 2011-11-30 20:18:14 +0900 | [diff] [blame] | 35 | config ANDROID_LOGGER |
| 36 | tristate "Android log driver" |
| 37 | default n |
Cruz Julian Bishop | d7f9729 | 2012-12-22 09:00:46 +1000 | [diff] [blame] | 38 | ---help--- |
| 39 | This adds support for system-wide logging using four log buffers. |
| 40 | |
| 41 | These are: |
| 42 | |
| 43 | 1: main |
| 44 | 2: events |
| 45 | 3: radio |
| 46 | 4: system |
| 47 | |
| 48 | Log reading and writing is performed via normal Linux reads and |
| 49 | optimized writes. This optimization avoids logging having too |
| 50 | much overhead in the system. |
Greg Kroah-Hartman | 355b050 | 2011-11-30 20:18:14 +0900 | [diff] [blame] | 51 | |
Greg Kroah-Hartman | 355b050 | 2011-11-30 20:18:14 +0900 | [diff] [blame] | 52 | config ANDROID_TIMED_OUTPUT |
| 53 | bool "Timed output class driver" |
| 54 | default y |
| 55 | |
| 56 | config ANDROID_TIMED_GPIO |
| 57 | tristate "Android timed gpio driver" |
Alexandre Courbot | 76ec9d1 | 2013-03-28 04:34:56 -0700 | [diff] [blame] | 58 | depends on GPIOLIB && ANDROID_TIMED_OUTPUT |
Greg Kroah-Hartman | 355b050 | 2011-11-30 20:18:14 +0900 | [diff] [blame] | 59 | default n |
| 60 | |
| 61 | config ANDROID_LOW_MEMORY_KILLER |
| 62 | bool "Android Low Memory Killer" |
| 63 | default N |
| 64 | ---help--- |
Cruz Julian Bishop | d7f9729 | 2012-12-22 09:00:46 +1000 | [diff] [blame] | 65 | Registers processes to be killed when memory is low |
Greg Kroah-Hartman | 355b050 | 2011-11-30 20:18:14 +0900 | [diff] [blame] | 66 | |
John Stultz | ef2353d | 2012-04-20 12:31:47 -0700 | [diff] [blame] | 67 | config ANDROID_INTF_ALARM_DEV |
John Stultz | fe8d272 | 2012-02-09 14:24:36 -0800 | [diff] [blame] | 68 | bool "Android alarm driver" |
| 69 | depends on RTC_CLASS |
Praneeth Kumar Bajjuri | 58a38ff | 2012-02-09 14:24:37 -0800 | [diff] [blame] | 70 | default n |
Cruz Julian Bishop | d7f9729 | 2012-12-22 09:00:46 +1000 | [diff] [blame] | 71 | ---help--- |
John Stultz | fe8d272 | 2012-02-09 14:24:36 -0800 | [diff] [blame] | 72 | Provides non-wakeup and rtc backed wakeup alarms based on rtc or |
| 73 | elapsed realtime, and a non-wakeup alarm on the monotonic clock. |
John Stultz | ef2353d | 2012-04-20 12:31:47 -0700 | [diff] [blame] | 74 | Also exports the alarm interface to user-space. |
John Stultz | fe8d272 | 2012-02-09 14:24:36 -0800 | [diff] [blame] | 75 | |
Erik Gilling | 7ad530b | 2013-02-28 16:42:57 -0800 | [diff] [blame] | 76 | config SYNC |
| 77 | bool "Synchronization framework" |
| 78 | default n |
| 79 | select ANON_INODES |
Cruz Julian Bishop | fb51b50 | 2013-09-03 22:05:05 +1000 | [diff] [blame^] | 80 | ---help--- |
Erik Gilling | 7ad530b | 2013-02-28 16:42:57 -0800 | [diff] [blame] | 81 | This option enables the framework for synchronization between multiple |
| 82 | drivers. Sync implementations can take advantage of hardware |
| 83 | synchronization built into devices like GPUs. |
| 84 | |
Erik Gilling | 9d1906e | 2013-02-28 16:42:58 -0800 | [diff] [blame] | 85 | config SW_SYNC |
| 86 | bool "Software synchronization objects" |
| 87 | default n |
| 88 | depends on SYNC |
Cruz Julian Bishop | fb51b50 | 2013-09-03 22:05:05 +1000 | [diff] [blame^] | 89 | ---help--- |
Erik Gilling | 9d1906e | 2013-02-28 16:42:58 -0800 | [diff] [blame] | 90 | A sync object driver that uses a 32bit counter to coordinate |
| 91 | syncrhronization. Useful when there is no hardware primitive backing |
| 92 | the synchronization. |
| 93 | |
| 94 | config SW_SYNC_USER |
| 95 | bool "Userspace API for SW_SYNC" |
| 96 | default n |
| 97 | depends on SW_SYNC |
Cruz Julian Bishop | fb51b50 | 2013-09-03 22:05:05 +1000 | [diff] [blame^] | 98 | ---help--- |
Erik Gilling | 9d1906e | 2013-02-28 16:42:58 -0800 | [diff] [blame] | 99 | Provides a user space API to the sw sync object. |
| 100 | *WARNING* improper use of this can result in deadlocking kernel |
| 101 | drivers from userspace. |
| 102 | |
Greg Kroah-Hartman | 355b050 | 2011-11-30 20:18:14 +0900 | [diff] [blame] | 103 | endif # if ANDROID |
| 104 | |
| 105 | endmenu |