Hack uart_suspend_port() and uart_resume_port() so that serial console
ports are not suspended if CONFIG_DISABLE_CONSOLE_SUSPEND is set.
This makes it possible to debug the suspend and resume routines of all
device drivers as well as the lowest-level swsusp code with the help of the
serial console.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Patch from Ben Dooks
The S3C2440 serial info struct is being passed
through the S3C2412 serial info struct probe
routine.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Thomas Glexiner <tglx@linutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
While we've been sorting out the toolchain fiasco, some of
the code has suffered a bit of bitrot. Building with GCC4
also brings up some more build warnings. Trivial fixes for
both issues.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
- some const- ification and usage of ARRAY_SIZE() in serial drivers
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
uart_match_port() always fails with UPIO_MEM32, UPIO_AU, and UPIO_TSI cases.
Since they match to the memory mapped UARTs, they should be handled just like
UPIO_MEM case.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Here is a patch that adds support for the Instashield IS-200 2 port PCI
serial card.
Signed-off-by: Peter Horton <pdh@colonel-panic.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This fixes yet another sunsab problem, when console is set to anything
but the first port. The console framework calls sunsab_console_setup
for each port, and we end up setting up a console on a not yet
discovered port, which leads to an Oops. Instead, defer console setup
until the requested port is properly initialized. Tested on an E250
through an RSC console.
Reported by Daniel Smolik <marvin@mydatex.cz>
Signed-off-by: Marc Zyngier <maz@misterjones.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Now that get_property() returns a void *, there's no need to cast its
return value. Also, treat the return value as const, so we can
constify get_property later.
powermac platform & macintosh driver changes.
Built for pmac32_defconfig, g5_defconfig
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Just do a linear enumeration so that we handle sun4d systems
correctly. As a consequence, eliminate the hard coded keyboard and
mouse channel line values, use the CONS_{KEYB,MS} flags instead.
Also, report the keyboard/mouse Zilog channels just like the uart ones
do.
Signed-off-by: David S. Miller <davem@davemloft.net>
Table sizing code should look for "se" not "su" nodes.
The chip at the lower address should get the first index.
Signed-off-by: David S. Miller <davem@davemloft.net>
Register second SAB port before the first one, as serial A is wired to
it, and expected to appear as ttyS0.
Signed-off-by: Marc Zyngier <maz@misterjones.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Instead of initializing both ports of a SAB device
properly, we were setting up the first port
structure twice and ending up only with the second
port, oops.
Signed-off-by: David S. Miller <davem@davemloft.net>
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (53 commits)
[MIPS] sparsemem: fix crash in show_mem
[MIPS] vr41xx: Update workpad setup function
[MIPS] vr41xx: Update e55 setup function
[MIPS] vr41xx: Removed old v2.4 VRC4173 driver
[MIPS] vr41xx: Move IRQ numbers to asm-mips/vr41xx/irq.h
[MIPS] MIPSsim: Build fix, rename sim_timer_setup -> plat_timer_setup.
[MIPS] Remove unused code.
[MIPS] IP22 Fix brown paper bag in RTC code.
[MIPS] Atlas, Malta, SEAD: Don't disable interrupts in mips_time_init().
[MIPS] Replace board_timer_setup function pointer by plat_timer_setup.
[MIPS] Nuke redeclarations of board_time_init.
[MIPS] Remove redeclarations of setup_irq().
[MIPS] Nuke redeclarations of board_timer_setup.
[MIPS] Print out TLB handler assembly for debugging.
[MIPS] SMTC: Reformat to Linux style.
[MIPS] MIPSsim: Delete redeclaration of ll_local_timer_interrupt.
[MIPS] IP27: Reformatting.
[MIPS] IP27: Invoke setup_irq for timer interrupt so proc stats will be shown.
[MIPS] IP27: irq_chip startup method returns unsigned int.
[MIPS] IP27: struct irq_desc member handler was renamed to chip.
...
The sunsu_ports[] array exists merely to be able to easily
use an integer index to get at the proper serial console
port struct.
We size this only for real ports, not for the keyboard and
mouse, and thus keyboard and mouse port registration would
fail.
Fix this by dynamically allocating the port struct for the
keyboard and mouse, instead of using the sunsu_ports[]
array.
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix http://bugzilla.kernel.org/show_bug.cgi?id=6716
Doing a sysrq over a serial line into an SMP machine presently deadlocks.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The following patch gets rid of CONFIG_TSI108_BRIDGE. I add UPIO_TSI to
handle IIR and IER register in serial_in and serial_out.
(1) the reason to rewrite serial_in:
TSI108 rev Z1 version ERRATA. Reading the UART's Interrupt
Identification Register (IIR) clears the Transmit Holding Register
Empty (THRE) and Transmit buffer Empty (TEMP) interrupts even if they
are not enabled in the Interrupt Enable Register (IER). This leads to
loss of the interrupts. Interrupts are not cleared when reading UART
registers as 32-bit word.
(2) the reason to rewrite serial_out:
Check for UART_IER_UUE bit in the autoconfig routine. This section
of autoconfig is excluded for Tsi108/109 because bits 7 and 6 are
reserved for internal use. They are R/W bits. In addition to
incorrect identification, changing these bits (from 00) will make
Tsi108/109 UART non-functional.
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The patch below fixes serial console hangs as seen on IP22
machines. Typically, while booting, the machine hangs for ~1 minute
displaying "INIT: ", then the same thing happens again when init
enters in the designated runlevel and finally the getty process on
ttyS0 hangs indefinitely (though strace'ing it helps).
strace (-e raw=ioctl, otherwise the ioctl() translation is utterly
bogus) reveals that getty hangs on ioctl() 0x540f which happens to be
TCSETSW (I saw it hang on another console ioctl() but couldn't
reproduce that one).
A diff between ip22zilog and sunzilog revealed the following
differences:
1. the channel A flag being set on up.port.flags instead of up.flags
2. the channel A flag being set on what is marked as being channel B
3. sunzilog has a call to uart_update_timeout(port, termios->c_cflag, baud);
at the end of sunzilog_set_termios(), which ip22zilog lacks (on
purpose ?)
The patch below addresses point 1 and fixes the serial console hangs
just fine. However point 2 should be investigated by someone familiar
with the IP22 Zilog; it's probably OK as is but even if it is, a
comment in ip22zilog.c is badly needed.
Point 3 is left as an exercise for whoever feels like digging into
ip22zilog :)
These are the main obvious differences between ip22zilog and
sunzilog. Newer versions of sunzilog (Linus's git tree as of today)
are more close to ip22zilog as the sbus_{write,read}b have been
changed into simple {write,read}b, which shrinks the diff by a fair
amount. Resyncing both drivers should be doable in a few hours time
now for someone familiar with the IP22 Zilog hardware.
Signed-off-by: Julien BLACHE <jb@jblache.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Fix the following compilation error in the dz serial driver that got
introduced with the "kernel console should send CRLF not LFCR" change.
CC drivers/serial/dz.o
drivers/serial/dz.c: In function 'dz_console_putchar':
drivers/serial/dz.c:679: error: 'uport' undeclared (first use in this function)
drivers/serial/dz.c:679: error: (Each undeclared identifier is reported only once
drivers/serial/dz.c:679: error: for each function it appears in.)
Signed-off-by: Martin Michlmayr <tbm@cyrius.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Patch from Andrew Victor
The AT91RM9200 errata work-around should be using the GPIO API and not
accessing the PIO registers directly.
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-serial:
[SERIAL] Ensure 8250_pci quirks are not marked __devinit
[SERIAL] Convert fifosize to an unsigned int
* git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
powerpc: add defconfig for Freescale MPC8349E-mITX board
powerpc: Add base support for the Freescale MPC8349E-mITX eval board
Documentation: correct values in MPC8548E SEC example node
[POWERPC] Actually copy over i8259.c to arch/ppc/syslib this time
[POWERPC] Add new interrupt mapping core and change platforms to use it
[POWERPC] Copy i8259 code back to arch/ppc
[POWERPC] New device-tree interrupt parsing code
[POWERPC] Use the genirq framework
[PATCH] genirq: Allow fasteoi handler to retrigger disabled interrupts
[POWERPC] Update the SWIM3 (powermac) floppy driver
[POWERPC] Fix error handling in detecting legacy serial ports
[POWERPC] Fix booting on Momentum "Apache" board (a Maple derivative)
[POWERPC] Fix various offb and BootX-related issues
[POWERPC] Add a default config for 32-bit CHRP machines
[POWERPC] fix implicit declaration on cell.
[POWERPC] change get_property to return void *
Teach special (dual-initialized) locking code to the lock validator. Has no
effect on non-lockdep kernels.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
PNP devices can use shared interrupts, so check to see whether we'll need
SA_SHIRQ for request_irq().
The builtin PDH UART on the HP rx8640 is an example of an ACPI/PNP device
that uses a shareable level-triggered, active-low interrupt. The interrupt
can be shared in very large I/O configurations or by artificially lowering
IA64_DEF_LAST_DEVICE_VECTOR.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Adam Belay <ambx1@neo.rr.com>
Cc: Matthieu Castet <castet.matthieu@free.fr>
Cc: Li Shaohua <shaohua.li@intel.com>
Cc: Len Brown <len.brown@intel.com>
Acked-by: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The 8250_pci quirks must not be marked __devinit since they may
be used from parport_serial. We only really need to mark those
which might be used by cards recognised by parport_serial, but
that wouldn't allow static checking.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This adds the new irq remapper core and removes the old one. Because
there are some fundamental conflicts with the old code, like the value
of NO_IRQ which I'm now setting to 0 (as per discussions with Linus),
etc..., this commit also changes the relevant platform and driver code
over to use the new remapper (so as not to cause difficulties later
in bisecting).
This patch removes the old pre-parsing of the open firmware interrupt
tree along with all the bogus assumptions it made to try to renumber
interrupts according to the platform. This is all to be handled by the
new code now.
For the pSeries XICS interrupt controller, a single remapper host is
created for the whole machine regardless of how many interrupt
presentation and source controllers are found, and it's set to match
any device node that isn't a 8259. That works fine on pSeries and
avoids having to deal with some of the complexities of split source
controllers vs. presentation controllers in the pSeries device trees.
The powerpc i8259 PIC driver now always requests the legacy interrupt
range. It also has the feature of being able to match any device node
(including NULL) if passed no device node as an input. That will help
porting over platforms with broken device-trees like Pegasos who don't
have a proper interrupt tree.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Some UARTs have more than 255 bytes of FIFO, which can't be
represented by an unsigned char. Change the kernel's internal
structure to be an unsigned int, but still export an unsigned char
via the TIOCGSERIAL ioctl. If the TIOCSSERIAL ioctl provides a
fifo size of 0, assume this means "don't change" otherwise we'll
corrupt the larger fifo sizes.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
[SPARC64]: Kill sun4v virtual device layer.
[SERIAL] sunhv: Convert to of_driver layer.
[SPARC64]: Mask out top 8-bits in physical address when building resources.
[SERIAL] sunsu: Missing return statement in su_probe().
1) Need to unregister 2 ports per of_device.
2) Need to of_iounmap() 1 mapping per of_device.
3) Need to free up the IRQ only after all devices
have been unregistered.
Signed-off-by: David S. Miller <davem@davemloft.net>
