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linux-next/drivers/net/hamradio/Kconfig
Joe Millenbach 4f73bc4dd3 tty: Added a CONFIG_TTY option to allow removal of TTY 
The option allows you to remove TTY and compile without errors. This
saves space on systems that won't support TTY interfaces anyway.
bloat-o-meter output is below.

The bulk of this patch consists of Kconfig changes adding "depends on
TTY" to various serial devices and similar drivers that require the TTY
layer.  Ideally, these dependencies would occur on a common intermediate
symbol such as SERIO, but most drivers "select SERIO" rather than
"depends on SERIO", and "select" does not respect dependencies.

bloat-o-meter output comparing our previous minimal to new minimal by
removing TTY.  The list is filtered to not show removed entries with awk
'$3 != "-"' as the list was very long.

add/remove: 0/226 grow/shrink: 2/14 up/down: 6/-35356 (-35350)
function                                     old     new   delta
chr_dev_init                                 166     170      +4
allow_signal                                  80      82      +2
static.__warned                              143     142      -1
disallow_signal                               63      62      -1
__set_special_pids                            95      94      -1
unregister_console                           126     121      -5
start_kernel                                 546     541      -5
register_console                             593     588      -5
copy_from_user                                45      40      -5
sys_setsid                                   128     120      -8
sys_vhangup                                   32      19     -13
do_exit                                     1543    1526     -17
bitmap_zero                                   60      40     -20
arch_local_irq_save                          137     117     -20
release_task                                 674     652     -22
static.spin_unlock_irqrestore                308     260     -48

Signed-off-by: Joe Millenbach <jmillenbach@gmail.com>
Reviewed-by: Jamey Sharp <jamey@minilop.net>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-18 16:15:27 -08:00

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config MKISS
tristate "Serial port KISS driver"
depends on AX25 && TTY
select CRC16
---help---
KISS is a protocol used for the exchange of data between a computer
and a Terminal Node Controller (a small embedded system commonly
used for networking over AX.25 amateur radio connections; it
connects the computer's serial port with the radio's microphone
input and speaker output).
Although KISS is less advanced than the 6pack protocol, it has
the advantage that it is already supported by most modern TNCs
without the need for a firmware upgrade.
To compile this driver as a module, choose M here: the module
will be called mkiss.
config 6PACK
tristate "Serial port 6PACK driver"
depends on AX25 && TTY
---help---
6pack is a transmission protocol for the data exchange between your
PC and your TNC (the Terminal Node Controller acts as a kind of
modem connecting your computer's serial port to your radio's
microphone input and speaker output). This protocol can be used as
an alternative to KISS for networking over AX.25 amateur radio
connections, but it has some extended functionality.
Note that this driver is still experimental and might cause
problems. For details about the features and the usage of the
driver, read <file:Documentation/networking/6pack.txt>.
To compile this driver as a module, choose M here: the module
will be called 6pack.
config BPQETHER
tristate "BPQ Ethernet driver"
depends on AX25
help
AX.25 is the protocol used for computer communication over amateur
radio. If you say Y here, you will be able to send and receive AX.25
traffic over Ethernet (also called "BPQ AX.25"), which could be
useful if some other computer on your local network has a direct
amateur radio connection.
config DMASCC
tristate "High-speed (DMA) SCC driver for AX.25"
depends on ISA && AX25 && BROKEN_ON_SMP && ISA_DMA_API
---help---
This is a driver for high-speed SCC boards, i.e. those supporting
DMA on one port. You usually use those boards to connect your
computer to an amateur radio modem (such as the WA4DSY 56kbps
modem), in order to send and receive AX.25 packet radio network
traffic.
Currently, this driver supports Ottawa PI/PI2, Paccomm/Gracilis
PackeTwin, and S5SCC/DMA boards. They are detected automatically.
If you have one of these cards, say Y here and read the AX25-HOWTO,
available from <http://www.tldp.org/docs.html#howto>.
This driver can operate multiple boards simultaneously. If you
compile it as a module (by saying M instead of Y), it will be called
dmascc. If you don't pass any parameter to the driver, all
possible I/O addresses are probed. This could irritate other devices
that are currently not in use. You may specify the list of addresses
to be probed by "dmascc.io=addr1,addr2,..." (when compiled into the
kernel image) or "io=addr1,addr2,..." (when loaded as a module). The
network interfaces will be called dmascc0 and dmascc1 for the board
detected first, dmascc2 and dmascc3 for the second one, and so on.
Before you configure each interface with ifconfig, you MUST set
certain parameters, such as channel access timing, clock mode, and
DMA channel. This is accomplished with a small utility program,
dmascc_cfg, available at
<http://www.linux-ax25.org/wiki/Ax25-tools>. Please be sure to
get at least version 1.27 of dmascc_cfg, as older versions will not
work with the current driver.
config SCC
tristate "Z8530 SCC driver"
depends on ISA && AX25 && ISA_DMA_API
---help---
These cards are used to connect your Linux box to an amateur radio
in order to communicate with other computers. If you want to use
this, read <file:Documentation/networking/z8530drv.txt> and the
AX25-HOWTO, available from
<http://www.tldp.org/docs.html#howto>. Also make sure to say Y
to "Amateur Radio AX.25 Level 2" support.
To compile this driver as a module, choose M here: the module
will be called scc.
config SCC_DELAY
bool "additional delay for PA0HZP OptoSCC compatible boards"
depends on SCC
help
Say Y here if you experience problems with the SCC driver not
working properly; please read
<file:Documentation/networking/z8530drv.txt> for details.
If unsure, say N.
config SCC_TRXECHO
bool "support for TRX that feedback the tx signal to rx"
depends on SCC
help
Some transmitters feed the transmitted signal back to the receive
line. Say Y here to foil this by explicitly disabling the receiver
during data transmission.
If in doubt, say Y.
config BAYCOM_SER_FDX
tristate "BAYCOM ser12 fullduplex driver for AX.25"
depends on AX25 && !S390
select CRC_CCITT
---help---
This is one of two drivers for Baycom style simple amateur radio
modems that connect to a serial interface. The driver supports the
ser12 design in full-duplex mode. In addition, it allows the
baudrate to be set between 300 and 4800 baud (however not all modems
support all baudrates). This is the preferred driver. The next
driver, "BAYCOM ser12 half-duplex driver for AX.25" is the old
driver and still provided in case this driver does not work with
your serial interface chip. To configure the driver, use the sethdlc
utility available in the standard ax25 utilities package. For
information on the modems, see <http://www.baycom.de/> and
<file:Documentation/networking/baycom.txt>.
To compile this driver as a module, choose M here: the module
will be called baycom_ser_fdx. This is recommended.
config BAYCOM_SER_HDX
tristate "BAYCOM ser12 halfduplex driver for AX.25"
depends on AX25 && !S390
select CRC_CCITT
---help---
This is one of two drivers for Baycom style simple amateur radio
modems that connect to a serial interface. The driver supports the
ser12 design in half-duplex mode. This is the old driver. It is
still provided in case your serial interface chip does not work with
the full-duplex driver. This driver is deprecated. To configure
the driver, use the sethdlc utility available in the standard ax25
utilities package. For information on the modems, see
<http://www.baycom.de/> and
<file:Documentation/networking/baycom.txt>.
To compile this driver as a module, choose M here: the module
will be called baycom_ser_hdx. This is recommended.
config BAYCOM_PAR
tristate "BAYCOM picpar and par96 driver for AX.25"
depends on PARPORT && AX25
select CRC_CCITT
---help---
This is a driver for Baycom style simple amateur radio modems that
connect to a parallel interface. The driver supports the picpar and
par96 designs. To configure the driver, use the sethdlc utility
available in the standard ax25 utilities package. For information on
the modems, see <http://www.baycom.de/> and the file
<file:Documentation/networking/baycom.txt>.
To compile this driver as a module, choose M here: the module
will be called baycom_par. This is recommended.
config BAYCOM_EPP
tristate "BAYCOM epp driver for AX.25"
depends on PARPORT && AX25 && !64BIT
select CRC_CCITT
---help---
This is a driver for Baycom style simple amateur radio modems that
connect to a parallel interface. The driver supports the EPP
designs. To configure the driver, use the sethdlc utility available
in the standard ax25 utilities package. For information on the
modems, see <http://www.baycom.de/> and the file
<file:Documentation/networking/baycom.txt>.
To compile this driver as a module, choose M here: the module
will be called baycom_epp. This is recommended.
config YAM
tristate "YAM driver for AX.25"
depends on AX25 && !S390
help
The YAM is a modem for packet radio which connects to the serial
port and includes some of the functions of a Terminal Node
Controller. If you have one of those, say Y here.
To compile this driver as a module, choose M here: the module
will be called yam.
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