kconfig

基于ti公司davinci系统的视频preview引擎驱动

#
# Character device configuration
#

menu "Character devices"

config VT
	bool "Virtual terminal" if EMBEDDED
	select INPUT
	default y if !VIOCONS
	---help---
	  If you say Y here, you will get support for terminal devices with
	  display and keyboard devices. These are called "virtual" because you
	  can run several virtual terminals (also called virtual consoles) on
	  one physical terminal. This is rather useful, for example one
	  virtual terminal can collect system messages and warnings, another
	  one can be used for a text-mode user session, and a third could run
	  an X session, all in parallel. Switching between virtual terminals
	  is done with certain key combinations, usually Alt-<function key>.

	  The setterm command ("man setterm") can be used to change the
	  properties (such as colors or beeping) of a virtual terminal. The
	  man page console_codes(4) ("man console_codes") contains the special
	  character sequences that can be used to change those properties
	  directly. The fonts used on virtual terminals can be changed with
	  the setfont ("man setfont") command and the key bindings are defined
	  with the loadkeys ("man loadkeys") command.

	  You need at least one virtual terminal device in order to make use
	  of your keyboard and monitor. Therefore, only people configuring an
	  embedded system would want to say N here in order to save some
	  memory; the only way to log into such a system is then via a serial
	  or network connection.

	  If unsure, say Y, or else you won't be able to do much with your new
	  shiny Linux system :-)

config VT_CONSOLE
	bool "Support for console on virtual terminal" if EMBEDDED
	depends on VT
	default y
	---help---
	  The system console is the device which receives all kernel messages
	  and warnings and which allows logins in single user mode. If you
	  answer Y here, a virtual terminal (the device used to interact with
	  a physical terminal) can be used as system console. This is the most
	  common mode of operations, so you should say Y here unless you want
	  the kernel messages be output only to a serial port (in which case
	  you should say Y to "Console on serial port", below).

	  If you do say Y here, by default the currently visible virtual
	  terminal (/dev/tty0) will be used as system console. You can change
	  that with a kernel command line option such as "console=tty3" which
	  would use the third virtual terminal as system console. (Try "man
	  bootparam" or see the documentation of your boot loader (lilo or
	  loadlin) about how to pass options to the kernel at boot time.)

	  If unsure, say Y.

config HW_CONSOLE
	bool
	depends on VT && !S390 && !USERMODE
	default y

config SERIAL_NONSTANDARD
	bool "Non-standard serial port support"
	---help---
	  Say Y here if you have any non-standard serial boards -- boards
	  which aren't supported using the standard "dumb" serial driver.
	  This includes intelligent serial boards such as Cyclades,
	  Digiboards, etc. These are usually used for systems that need many
	  serial ports because they serve many terminals or dial-in
	  connections.

	  Note that the answer to this question won't directly affect the
	  kernel: saying N will just cause the configurator to skip all
	  the questions about non-standard serial boards.

	  Most people can say N here.

config COMPUTONE
	tristate "Computone IntelliPort Plus serial support"
	depends on SERIAL_NONSTANDARD && BROKEN_ON_SMP
	---help---
	  This driver supports the entire family of Intelliport II/Plus
	  controllers with the exception of the MicroChannel controllers and
	  products previous to the Intelliport II. These are multiport cards,
	  which give you many serial ports. You would need something like this
	  to connect more than two modems to your Linux box, for instance in
	  order to become a dial-in server. If you have a card like that, say
	  Y here and read <file:Documentation/computone.txt>.

	  To compile this driver as modules, choose M here: the
	  modules will be called ip2 and ip2main.

config ROCKETPORT
	tristate "Comtrol RocketPort support"
	depends on SERIAL_NONSTANDARD
	help
	  This driver supports Comtrol RocketPort and RocketModem PCI boards.
          These boards provide 2, 4, 8, 16, or 32 high-speed serial ports or
          modems.  For information about the RocketPort/RocketModem  boards
          and this driver read <file:Documentation/rocket.txt>.

	  To compile this driver as a module, choose M here: the
	  module will be called rocket.

	  If you want to compile this driver into the kernel, say Y here.  If
          you don't have a Comtrol RocketPort/RocketModem card installed, say N.

config CYCLADES
	tristate "Cyclades async mux support"
	depends on SERIAL_NONSTANDARD
	---help---
	  This driver supports Cyclades Z and Y multiserial boards.
	  You would need something like this to connect more than two modems to
	  your Linux box, for instance in order to become a dial-in server.

	  For information about the Cyclades-Z card, read
	  <file:drivers/char/README.cycladesZ>.

	  To compile this driver as a module, choose M here: the
	  module will be called cyclades.

	  If you haven't heard about it, it's safe to say N.

config CYZ_INTR
	bool "Cyclades-Z interrupt mode operation (EXPERIMENTAL)"
	depends on EXPERIMENTAL && CYCLADES
	help
	  The Cyclades-Z family of multiport cards allows 2 (two) driver op
	  modes: polling and interrupt. In polling mode, the driver will check
	  the status of the Cyclades-Z ports every certain amount of time
	  (which is called polling cycle and is configurable). In interrupt
	  mode, it will use an interrupt line (IRQ) in order to check the
	  status of the Cyclades-Z ports. The default op mode is polling. If
	  unsure, say N.

config DIGIEPCA
	tristate "Digiboard Intelligent Async Support"
	depends on SERIAL_NONSTANDARD && BROKEN_ON_SMP
	---help---
	  This is a driver for Digi International's Xx, Xeve, and Xem series
	  of cards which provide multiple serial ports. You would need
	  something like this to connect more than two modems to your Linux
	  box, for instance in order to become a dial-in server. This driver
	  supports the original PC (ISA) boards as well as PCI, and EISA. If
	  you have a card like this, say Y here and read the file
	  <file:Documentation/digiepca.txt>.

	  NOTE: There is another, separate driver for the Digiboard PC boards:
	  "Digiboard PC/Xx Support" below. You should (and can) only select
	  one of the two drivers.

	  To compile this driver as a module, choose M here: the
	  module will be called epca.

config DIGI
	tristate "Digiboard PC/Xx Support"
	depends on SERIAL_NONSTANDARD && DIGIEPCA=n && BROKEN_ON_SMP
	help
	  This is a driver for the Digiboard PC/Xe, PC/Xi, and PC/Xeve cards
	  that give you many serial ports. You would need something like this
	  to connect more than two modems to your Linux box, for instance in
	  order to become a dial-in server. If you have a card like that, say
	  Y here and read the file <file:Documentation/digiboard.txt>.

	  To compile this driver as a module, choose M here: the
	  module will be called pcxx.

config ESPSERIAL
	tristate "Hayes ESP serial port support"
	depends on SERIAL_NONSTANDARD && ISA && BROKEN_ON_SMP
	help
	  This is a driver which supports Hayes ESP serial ports.  Both single
	  port cards and multiport cards are supported.  Make sure to read
	  <file:Documentation/hayes-esp.txt>.

	  To compile this driver as a module, choose M here: the
	  module will be called esp.

	  If unsure, say N.

config MOXA_INTELLIO
	tristate "Moxa Intellio support"
	depends on SERIAL_NONSTANDARD && BROKEN_ON_SMP
	help
	  Say Y here if you have a Moxa Intellio multiport serial card.

	  To compile this driver as a module, choose M here: the
	  module will be called moxa.

config MOXA_SMARTIO
	tristate "Moxa SmartIO support"
	depends on SERIAL_NONSTANDARD
	help
	  Say Y here if you have a Moxa SmartIO multiport serial card.

	  This driver can also be built as a module ( = code which can be
	  inserted in and removed from the running kernel whenever you want).
	  The module will be called mxser. If you want to do that, say M
	  here.

config ISI
	tristate "Multi-Tech multiport card support (EXPERIMENTAL)"
	depends on SERIAL_NONSTANDARD && PCI && EXPERIMENTAL && BROKEN_ON_SMP && m
	help
	  This is a driver for the Multi-Tech cards which provide several
	  serial ports.  The driver is experimental and can currently only be
	  built as a module. The module will be called isicom.
	  If you want to do that, choose M here.

config SYNCLINK
	tristate "Microgate SyncLink card support"
	depends on SERIAL_NONSTANDARD && PCI
	help
	  Provides support for the SyncLink ISA and PCI multiprotocol serial
	  adapters. These adapters support asynchronous and HDLC bit
	  synchronous communication up to 10Mbps (PCI adapter).

	  This driver can only be built as a module ( = code which can be
	  inserted in and removed from the running kernel whenever you want).
	  The module will be called synclink.  If you want to do that, say M
	  here.

config SYNCLINKMP
	tristate "SyncLink Multiport support"
	depends on SERIAL_NONSTANDARD
	help
	  Enable support for the SyncLink Multiport (2 or 4 ports)
	  serial adapter, running asynchronous and HDLC communications up
	  to 2.048Mbps. Each ports is independently selectable for
	  RS-232, V.35, RS-449, RS-530, and X.21

	  This driver may be built as a module ( = code which can be
	  inserted in and removed from the running kernel whenever you want).
	  The module will be called synclinkmp.  If you want to do that, say M
	  here.

config N_HDLC
	tristate "HDLC line discipline support"
	depends on SERIAL_NONSTANDARD
	help
	  Allows synchronous HDLC communications with tty device drivers that
	  support synchronous HDLC such as the Microgate SyncLink adapter.

	  This driver can only be built as a module ( = code which can be
	  inserted in and removed from the running kernel whenever you want).
	  The module will be called n_hdlc. If you want to do that, say M
	  here.

config RISCOM8
	tristate "SDL RISCom/8 card support"
	depends on SERIAL_NONSTANDARD && BROKEN_ON_SMP
	help
	  This is a driver for the SDL Communications RISCom/8 multiport card,
	  which gives you many serial ports. You would need something like
	  this to connect more than two modems to your Linux box, for instance
	  in order to become a dial-in server. If you have a card like that,
	  say Y here and read the file <file:Documentation/riscom8.txt>.

	  Also it's possible to say M here and compile this driver as kernel
	  loadable module; the module will be called riscom8.

config SPECIALIX
	tristate "Specialix IO8+ card support"
	depends on SERIAL_NONSTANDARD && BROKEN_ON_SMP
	help
	  This is a driver for the Specialix IO8+ multiport card (both the
	  ISA and the PCI version) which gives you many serial ports. You
	  would need something like this to connect more than two modems to
	  your Linux box, for instance in order to become a dial-in server.

	  If you have a card like that, say Y here and read the file
	  <file:Documentation/specialix.txt>. Also it's possible to say M here
	  and compile this driver as kernel loadable module which will be
	  called specialix.

config SPECIALIX_RTSCTS
	bool "Specialix DTR/RTS pin is RTS"
	depends on SPECIALIX
	help
	  The Specialix IO8+ card can only support either RTS or DTR. If you
	  say N here, the driver will use the pin as "DTR" when the tty is in
	  software handshake mode.  If you say Y here or hardware handshake is
	  on, it will always be RTS.  Read the file
	  <file:Documentation/specialix.txt> for more information.

config SX
	tristate "Specialix SX (and SI) card support"
	depends on SERIAL_NONSTANDARD && BROKEN_ON_SMP
	help
	  This is a driver for the SX and SI multiport serial cards.
	  Please read the file <file:Documentation/sx.txt> for details.

	  This driver can only be built as a module ( = code which can be
	  inserted in and removed from the running kernel whenever you want).
	  The module will be called sx. If you want to do that, say M here.

config RIO
	tristate "Specialix RIO system support"
	depends on SERIAL_NONSTANDARD && BROKEN_ON_SMP
	help
	  This is a driver for the Specialix RIO, a smart serial card which
	  drives an outboard box that can support up to 128 ports.  Product
	  information is at <http://www.perle.com/support/documentation.html#multiport>.
	  There are both ISA and PCI versions.

config RIO_OLDPCI
	bool "Support really old RIO/PCI cards"
	depends on RIO
	help
	  Older RIO PCI cards need some initialization-time configuration to
	  determine the IRQ and some control addresses.  If you have a RIO and
	  this doesn't seem to work, try setting this to Y.

config STALDRV
	bool "Stallion multiport serial support"
	depends on SERIAL_NONSTANDARD
	help
	  Stallion cards give you many serial ports.  You would need something
	  like this to connect more than two modems to your Linux box, for
	  instance in order to become a dial-in server.  If you say Y here,
	  you will be asked for your specific card model in the next
	  questions.  Make sure to read <file:Documentation/stallion.txt> in
	  this case.  If you have never heard about all this, it's safe to
	  say N.

config STALLION
	tristate "Stallion EasyIO or EC8/32 support"
	depends on STALDRV && BROKEN_ON_SMP
	help
	  If you have an EasyIO or EasyConnection 8/32 multiport Stallion
	  card, then this is for you; say Y.  Make sure to read
	  <file:Documentation/stallion.txt>.

	  To compile this driver as a module, choose M here: the
	  module will be called stallion.

config ISTALLION
	tristate "Stallion EC8/64, ONboard, Brumby support"
	depends on STALDRV && BROKEN_ON_SMP
	help
	  If you have an EasyConnection 8/64, ONboard, Brumby or Stallion
	  serial multiport card, say Y here. Make sure to read
	  <file:Documentation/stallion.txt>.

	  To compile this driver as a module, choose M here: the
	  module will be called istallion.

config AU1X00_GPIO
	tristate "Alchemy Au1000 GPIO device support"
	depends on MIPS && SOC_AU1X00

config TS_AU1X00_ADS7846
	tristate "Au1000/ADS7846 touchscreen support"
	depends on MIPS && SOC_AU1X00

config AU1X00_USB_TTY
	tristate "Au1000 USB TTY Device support"
	depends on MIPS && MIPS_AU1000 && AU1000_USB_DEVICE=y && AU1000_USB_DEVICE

config AU1X00_USB_RAW
	tristate "Au1000 USB Raw Device support"
	depends on MIPS && MIPS_AU1000 && AU1000_USB_DEVICE=y && AU1000_USB_TTY!=y && AU1X00_USB_DEVICE

config SERIAL_TX3912
	bool "TX3912/PR31700 serial port support"
	depends on MIPS && CPU_TX39XX=y
	help
	  The TX3912 is a Toshiba RISC processor based o the MIPS 3900 core;
	  see <http://www.toshiba.com/taec/components/Generic/risc/tx3912.htm>.