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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/drivers/base/Kconfig
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
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-menu "Generic Driver Options"
-
-config UEVENT_HELPER_PATH
- string "path to uevent helper"
- depends on HOTPLUG
- default ""
- help
- Path to uevent helper program forked by the kernel for
- every uevent.
- Before the switch to the netlink-based uevent source, this was
- used to hook hotplug scripts into kernel device events. It
- usually pointed to a shell script at /sbin/hotplug.
- This should not be used today, because usual systems create
- many events at bootup or device discovery in a very short time
- frame. One forked process per event can create so many processes
- that it creates a high system load, or on smaller systems
- it is known to create out-of-memory situations during bootup.
-
- To disable user space helper program execution at early boot
- time specify an empty string here. This setting can be altered
- via /proc/sys/kernel/hotplug or via /sys/kernel/uevent_helper
- later at runtime.
-
-config DEVTMPFS
- bool "Maintain a devtmpfs filesystem to mount at /dev"
- depends on HOTPLUG
- help
- This creates a tmpfs/ramfs filesystem instance early at bootup.
- In this filesystem, the kernel driver core maintains device
- nodes with their default names and permissions for all
- registered devices with an assigned major/minor number.
- Userspace can modify the filesystem content as needed, add
- symlinks, and apply needed permissions.
- It provides a fully functional /dev directory, where usually
- udev runs on top, managing permissions and adding meaningful
- symlinks.
- In very limited environments, it may provide a sufficient
- functional /dev without any further help. It also allows simple
- rescue systems, and reliably handles dynamic major/minor numbers.
-
- Notice: if CONFIG_TMPFS isn't enabled, the simpler ramfs
- file system will be used instead.
-
-config DEVTMPFS_MOUNT
- bool "Automount devtmpfs at /dev, after the kernel mounted the rootfs"
- depends on DEVTMPFS
- help
- This will instruct the kernel to automatically mount the
- devtmpfs filesystem at /dev, directly after the kernel has
- mounted the root filesystem. The behavior can be overridden
- with the commandline parameter: devtmpfs.mount=0|1.
- This option does not affect initramfs based booting, here
- the devtmpfs filesystem always needs to be mounted manually
- after the roots is mounted.
- With this option enabled, it allows to bring up a system in
- rescue mode with init=/bin/sh, even when the /dev directory
- on the rootfs is completely empty.
-
-config STANDALONE
- bool "Select only drivers that don't need compile-time external firmware" if EXPERIMENTAL
- default y
- help
- Select this option if you don't have magic firmware for drivers that
- need it.
-
- If unsure, say Y.
-
-config PREVENT_FIRMWARE_BUILD
- bool "Prevent firmware from being built"
- default y
- help
- Say yes to avoid building firmware. Firmware is usually shipped
- with the driver and only when updating the firmware should a
- rebuild be made.
- If unsure, say Y here.
-
-config FW_LOADER
- tristate "Userspace firmware loading support" if EXPERT
- default y
- ---help---
- This option is provided for the case where none of the in-tree modules
- require userspace firmware loading support, but a module built
- out-of-tree does.
-
-config FIRMWARE_IN_KERNEL
- bool "Include in-kernel firmware blobs in kernel binary"
- depends on FW_LOADER
- default y
- help
- The kernel source tree includes a number of firmware 'blobs'
- that are used by various drivers. The recommended way to
- use these is to run "make firmware_install", which, after
- converting ihex files to binary, copies all of the needed
- binary files in firmware/ to /lib/firmware/ on your system so
- that they can be loaded by userspace helpers on request.
-
- Enabling this option will build each required firmware blob
- into the kernel directly, where request_firmware() will find
- them without having to call out to userspace. This may be
- useful if your root file system requires a device that uses
- such firmware and do not wish to use an initrd.
-
- This single option controls the inclusion of firmware for
- every driver that uses request_firmware() and ships its
- firmware in the kernel source tree, which avoids a
- proliferation of 'Include firmware for xxx device' options.
-
- Say 'N' and let firmware be loaded from userspace.
-
-config EXTRA_FIRMWARE
- string "External firmware blobs to build into the kernel binary"
- depends on FW_LOADER
- help
- This option allows firmware to be built into the kernel for the case
- where the user either cannot or doesn't want to provide it from
- userspace at runtime (for example, when the firmware in question is
- required for accessing the boot device, and the user doesn't want to
- use an initrd).
-
- This option is a string and takes the (space-separated) names of the
- firmware files -- the same names that appear in MODULE_FIRMWARE()
- and request_firmware() in the source. These files should exist under
- the directory specified by the EXTRA_FIRMWARE_DIR option, which is
- by default the firmware subdirectory of the kernel source tree.
-
- For example, you might set CONFIG_EXTRA_FIRMWARE="usb8388.bin", copy
- the usb8388.bin file into the firmware directory, and build the kernel.
- Then any request_firmware("usb8388.bin") will be satisfied internally
- without needing to call out to userspace.
-
- WARNING: If you include additional firmware files into your binary
- kernel image that are not available under the terms of the GPL,
- then it may be a violation of the GPL to distribute the resulting
- image since it combines both GPL and non-GPL work. You should
- consult a lawyer of your own before distributing such an image.
-
-config EXTRA_FIRMWARE_DIR
- string "Firmware blobs root directory"
- depends on EXTRA_FIRMWARE != ""
- default "firmware"
- help
- This option controls the directory in which the kernel build system
- looks for the firmware files listed in the EXTRA_FIRMWARE option.
- The default is firmware/ in the kernel source tree, but by changing
- this option you can point it elsewhere, such as /lib/firmware/ or
- some other directory containing the firmware files.
-
-config DEBUG_DRIVER
- bool "Driver Core verbose debug messages"
- depends on DEBUG_KERNEL
- help
- Say Y here if you want the Driver core to produce a bunch of
- debug messages to the system log. Select this if you are having a
- problem with the driver core and want to see more of what is
- going on.
-
- If you are unsure about this, say N here.
-
-config DEBUG_DEVRES
- bool "Managed device resources verbose debug messages"
- depends on DEBUG_KERNEL
- help
- This option enables kernel parameter devres.log. If set to
- non-zero, devres debug messages are printed. Select this if
- you are having a problem with devres or want to debug
- resource management for a managed device. devres.log can be
- switched on and off from sysfs node.
-
- If you are unsure about this, Say N here.
-
-config SYS_HYPERVISOR
- bool
- default n
-
-config GENERIC_CPU_DEVICES
- bool
- default n
-
-config SOC_BUS
- bool
-
-source "drivers/base/regmap/Kconfig"
-
-config DMA_SHARED_BUFFER
- bool
- default n
- select ANON_INODES
- depends on EXPERIMENTAL
- help
- This option enables the framework for buffer-sharing between
- multiple drivers. A buffer is associated with a file using driver
- APIs extension; the file's descriptor can then be passed on to other
- driver.
-
-config SYNC
- bool "Synchronization framework"
- default n
- select ANON_INODES
- 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.
-endmenu