linux-toradex.git/include/linux/serial_core.h, branch v2.6.26-rc5

serial_core: uart_set_ldisc infrastructure

2008-06-03T15:20:17+00:00

The tty layer provides a callback that is used when the line discipline
is changed. Some hardware uses this to configure hardware specific
features such as IrDA mode on serial ports. Unfortunately the serial
layer does not provide this feature or pass it down to drivers.

Blackfin used to hack around this by rewriting the tty ops, but those are
now properly shared and const so the hack fails. Instead provide the
proper operations.

This change plus a follow up from the Blackfin guys is needed to avoid
blackfin losing features in this release.

Signed-off-by: Alan Cox 
Signed-off-by: Linus Torvalds

Blackfin serial driver: this driver enable SPORTs on Blackfin emulate UART

2008-04-30T15:29:30+00:00

Signed-off-by: Bryan Wu 
Cc: Alan Cox 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

consoles: polling support, kgdboc

2008-04-17T18:05:37+00:00

polled console handling support, to access a console in an irq-less
way while in debug or irq context.

absolutely zero impact as long as CONFIG_CONSOLE_POLL is disabled.
(which is the default)

[ jan.kiszka@siemens.com: lots of cleanups ]
[ mingo@elte.hu: redesign, splitups, cleanups. ]

Signed-off-by: Jason Wessel 
Signed-off-by: Ingo Molnar 
Signed-off-by: Jan Kiszka 
Reviewed-by: Thomas Gleixner

SC26XX: missing PORT define in serial_core.h

2008-02-14T00:21:18+00:00

When submitting the driver for inclusion to 2.6.25 I've missed the change to
serial_core.h. This patch fixes this.

Signed-off-by: Thomas Bogendoerfer 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mn10300: allocate serial port UART IDs for on-chip serial ports

2008-02-08T17:22:30+00:00

Allocate serial port UART type IDs for the MN10300 on-chip serial ports.

Signed-off-by: David Howells 
Acked-by: Alan Cox 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

IP22ZILOG: fix lockup and sysrq

2007-11-29T17:24:53+00:00

 - fix lockup when switching from early console to real console
 - make sysrq reliable
 - fix panic, if sysrq is issued before console is opened

Signed-off-by: Thomas Bogendoerfer 
Acked-by: Ralf Baechle 
Cc: Alan Cox 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

add port definition for mcf UART driver

2007-10-24T03:45:44+00:00

Add a port type definition for the Freescale UART driver ports (mcf.c).

Signed-off-by: Greg Ungerer 
Signed-off-by: Linus Torvalds

wake up from a serial port

2007-10-16T16:42:50+00:00

Enable wakeup from serial ports, make it run-time configurable over sysfs,
e.g.,

echo enabled > /sys/devices/platform/serial8250.0/tty/ttyS0/power/wakeup

Requires

# CONFIG_SYSFS_DEPRECATED is not set

Following suggestions from Alan and Russell moved the may_wake_up checks
to serial_core.c. This time actually tested - it does even work. Could
someone, please, verify, that put_device after device_find_child is
correct?

Also would be nice to test with a Natsemi UART, that can wake up the system,
if such systems exist.

For this you just have to apply the patch below, issue the above "echo"
command to one of your Natsemi port, suspend and resume your system, and
verify that your Natsemi port still works.  If you are actually capable of
waking up the system from that port, would be nice to test that as well.

Signed-off-by: Guennadi Liakhovetski 
Cc: Alan Cox 
Cc: Russell King 
Cc: Kay Sievers 
Cc: Greg KH 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Use resource_size_t for serial port IO addresses

2007-07-24T19:24:58+00:00

At present, various parts of the serial code use unsigned long to define
resource addresses.  This is a problem, because some 32-bit platforms have
physical addresses larger than 32-bits, and have mmio serial uarts located
above the 4GB point.

This patch changes the type of mapbase in both struct uart_port and struct
plat_serial8250_port to resource_size_t, which can be configured to be 64
bits on such platforms.  The mapbase in serial_struct can't safely be
changed, because that structure is user visible.

Signed-off-by: David Gibson 
Signed-off-by: Josh Boyer 
Cc: Russell King 
Cc: Paul Mackerras 
Cc: Jason Wessel 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

zs: move to the serial subsystem

2007-07-18T15:38:22+00:00

This is a reimplementation of the zs driver for the serial subsystem.  Any
resemblance to the old driver is purely coincidential.  ;-) I do hope I got
the handling of modem lines right -- better do not tackle me about the
issue unless you feel too good...

Any users of the old driver: please note the numbers of the serial lines
have now been swapped, i.e.  ttyS0 <-> ttyS1 and ttyS2 <-> ttyS3.  It has
to do with the modem lines mentioned above; basically the port A in a given
chip has to be initialised before the port B if you want to use the latter
as the serial console (which is usually the case), as operations on modem
lines of the serial line associated with the port B access both ports (see
the comment at the top of the driver for the details of wiring used).
Please update your scripts.

This is also the reason each SCC now requests an IRQ once only (as seen in
"/proc/interrupts") -- the handler takes care of both ports at once as the
line associated with the port B has to take status update interrupts from
both ports (and yet the line of the port A takes its own for itself too).
The old driver never got it right...

Signed-off-by: Maciej W. Rozycki 
Cc: Ralf Baechle 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds