Commit graph

115 commits

Author SHA1 Message Date
Matt LaPlante
692105b8ac trivial: fix typos/grammar errors in Kconfig texts
Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-03-30 15:22:01 +02:00
Eric Miao
56422554d2 [ARM] pxa: allow reuse of serial driver for pxa168
Signed-off-by: Eric Miao <eric.miao@marvell.com>
2009-03-23 10:11:35 +08:00
Ihar Hrachyshka
11455be2a3 MIPS: enable serial UART support on PNX833X devices.
Enabled serial UART driver for PNX833X devices.

Signed-off-by: Ihar Hrachyshka <ihar.hrachyshka@gmail.com>
Signed-off-by: Alan Cox <number6@the-village.bc.nu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-27 07:37:15 -08:00
Linus Torvalds
ce279e6ec9 Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm: (23 commits)
  [ARM] fix pxa930_trkball build errors
  [ARM] fix netx
  [ARM] fix pnx4008
  [ARM] fix pxa
  [ARM] remove missed CLPS7500 defconfig
  [ARM] clps711x: fix warning in edb7211-mm.c
  [ARM] clps711x: fix warning in fortunet
  [ARM] fix AT91, davinci, h720x, ks8695, msm, mx2, mx3, netx, omap1, omap2, pxa, s3c
  [ARM] Fix realview build
  [ARM] 5357/1: Kirkwood: add missing ge01 tclk initialization
  [ARM] 5358/1: AT2440EVB: Use new include path of mci.h
  [ARM] 5361/1: mv78xx0: fix compilation error
  [ARM] 5360/1: Orion: fix compilation error
  [ARM] 5359/1: Kirkwood: fix compilation error
  [ARM] S3C64XX: Fix EINT group macro definition
  [ARM] Ensure CONFIG_SERIAL_SAMSUNG_UARTS is always set.
  [ARM] S3C24XX: Add gpio_to_irq implementation
  [ARM] S3C24XX: Add gpio_to_irq() facility
  [ARM] footbridge: dc21285.c warning fixes
  [ARM] footbridge: add isa_init_irq() to common header
  ...
2009-01-08 14:25:00 -08:00
Ben Dooks
2fafae3f6d [ARM] Ensure CONFIG_SERIAL_SAMSUNG_UARTS is always set.
Always set CONFIG_SERIAL_SAMSUNG_UARTS when building any
of the S3C platforms as even if the driver is not selected
there it is still the facility for the machine files to
register configuration data for the possibility of the
driver being built.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-01-08 16:24:14 +00:00
Benjamin Krill
5886188dc7 serial: Add driver for the Cell Network Processor serial port NWP device
Add support for the nwp serial device which is connected to a DCR bus. It
uses the of_serial device driver to determine necessary properties from
the device tree.  The supported device is added as serial port number 85.

NWP stands for network processor and it is part of the QPACE - Quantum
Chromodynamics Parallel Computing on the Cell Broadband Engine project.
The implementation is a lightweight uart implementation with the focus
to consume as little resources as possible and it is connected to a
DCR bus.

Signed-off-by: Benjamin Krill <ben@codiert.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-01-08 16:25:18 +11:00
Ben Dooks
03d5e77bb6 [ARM] S3C: Update number of serial ports
Update the serial driver to handle the 4 ports of the
S3C2443 and S364XX series.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2008-12-18 16:26:11 +00:00
Ben Dooks
b690ace50b [ARM] S3C6400: serial support for S3C6400 and S3C6410 SoCs
Add support to the Samsung serial driver for the S3C6400
and S3C6410 serial ports.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2008-12-15 21:58:11 +00:00
Sandeep Patil
1d4bab0824 [ARM] S3C24A0: Serial port definitions and driver support.
Add serial support for S3C24A0, based on current S3C2410
UART driver. It adds necessary new defines in regs-serial.h
for S3C24A0 and the code to support this device in
drivers/serial/s3c24a0.c

Signed-off-by: Sandeep Patil <sandeep.patil@azingo.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2008-12-15 21:46:36 +00:00
Paul Bolle
fb881f785f [ARM] build fixes for netX serial driver
Make the netX serial driver tristate (as the help text implied). Make the
serial driver build correctly if the netX serial console is disabled. Do not
allow the netX serial console if the netX serial driver is build as a module.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2008-10-30 09:41:59 +01:00
Ben Dooks
5fed4a3739 [ARM] S3C24XX: Serial driver debug depends on DEBUG_LL
The SERIAL_SAMSUNG_DEBUG used printascii() to avoid debugging
through itself when selected as a console. Disable this option
when DEBUG_LL is not set (printascii is unavailable).

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2008-10-16 16:48:29 +01:00
Benjamin Herrenschmidt
6dc6472581 Merge commit 'origin'
Manual fixup of conflicts on:

	arch/powerpc/include/asm/dcr-regs.h
	drivers/net/ibm_newemac/core.h
2008-10-15 11:31:54 +11:00
David Miller
b70ac77185 serial: allow 8250 to be used on sparc
This requires three changes:

1) Remove !SPARC restriction in Kconfig.

2) Move Sparc specific serial drivers before 8250, so that serial
   console devices don't change names on us, even if 8250 finds
   devices.

3) Since the Sparc specific serial drivers try to use the
   same major/minor device namespace as 8250, some coordination
   is necessary.  Use the sunserial_*() layer routines to allocate
   minor number space within TTY_MAJOR when CONFIG_SPARC.

   This has no effect on other platforms.

Thanks to Josip Rodin for bringing up this issue and testing
plus debugging various revisions of this patch.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-13 09:51:40 -07:00
Adrian Bunk
02f11f3924 coldfire: scheduled SERIAL_COLDFIRE removal
This patch contains the scheduled removal of the obsolete
SERIAL_COLDFIRE driver.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-13 09:51:38 -07:00
Kumar Gala
7cfc4e5e7f serial/cpm_uart: Remove dead Kconfig options
With the change to device tree based setup we no longer need the explicit
Kconfig options for each SCC{1,4} or SMC{1,2} port.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-09-16 10:01:33 -05:00
Ben Dooks
af7a535688 Merge http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm into for-rmk 2008-08-08 21:10:12 +01:00
Adrian Bunk
f606ddf42f remove the v850 port
Trying to compile the v850 port brings many compile errors, one of them exists
since at least kernel 2.6.19.

There also seems to be noone willing to bring this port back into a usable
state.

This patch therefore removes the v850 port.

If anyone ever decides to revive the v850 port the code will still be
available from older kernels, and it wouldn't be impossible for the port to
reenter the kernel if it would become actively maintained again.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:24 -07:00
Adrian Bunk
d87a6d951c drivers/serial/: remove CVS keywords
This patch removes CVS keywords that weren't updated for a long time in
comments, printk's and MODULE_DESCRIPTION's (no printk's or
MODULE_DESCRIPTION's are completely removed).

While doing this I also found and fixed a missing \n in a printk
in m32r_sio.c

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-20 17:12:35 -07:00
Ben Dooks
0c17e4ceed Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into for-rmk 2008-07-15 20:19:14 +01:00
Arnaud Patard (Rtp
19c1d6a34a [ARM] S3C24XX: Fix SERIAL_SAMSUNG entry
The SERIAL_SAMSUNG needs SERIAL_CORE but doesn't select it, leading to a
build failure. Adding a 'select SERIAL_CORE' cure the trouble.

Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2008-07-15 17:20:59 +01:00
Russell King
f0006314d3 Merge branch 'imx' into devel
Conflicts:

	arch/arm/mm/Kconfig
2008-07-10 16:41:50 +01:00
Sascha Hauer
e3d13ff4b9 mxc: add MX3 support for i.MX internal UART driver
This patch adds MX3 support for the i.MX internal uart driver.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2008-07-05 10:02:48 +02:00
Ben Dooks
b497549a03 [ARM] S3C24XX: Split serial driver into core and per-cpu drivers
The S3C2410 serial driver in drivers/serial/s3c2410.c has been
growing bigger with the addition of more variants of this hardware
with the growing Samsung SoCs range. As such, it would be
easier to split this code up into a core and per-cpu drivers to
make driver addition easier, and the core smaller.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2008-07-03 16:51:31 +01:00
Mike Frysinger
460ed2ea04 Blackfin SPORTS UART Driver: converting BFIN->BLACKFIN
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-05-17 18:22:26 +08:00
Sebastian Siewior
f7c5a770e6 m68knommu: add info about removing mcfserial
Schedule a removal for this driver. Alternative driver is available for
a while now.

Signed-off-by: Sebastian Siewior <bigeasy@linutronix.de>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-14 19:11:12 -07:00
Bryan Wu
2f3517418d Blackfin serial driver: this driver enable SPORTs on Blackfin emulate UART
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Cc: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-30 08:29:30 -07:00
Sergei Shtylyov
6e766458f7 [MIPS] Alchemy: move UART platform code to its proper place
Move the code registering the Alchemy UART platform devices from
drivers/serial/ to its proper place, into the Alchemy platform code.  Fix
the related Kconfig entry, while at it...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-04-28 17:14:28 +01:00
Jason Wessel
f2d937f3bf consoles: polling support, kgdboc
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 <jason.wessel@windriver.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Jan Kiszka <jan.kiszka@web.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17 20:05:37 +02:00
Sonic Zhang
db288381e2 [Blackfin] serial driver: Add flow control support to bf54x
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
2008-02-02 17:05:02 +08:00
Michael Hennerich
095455682e [Blackfin] serial driver: ADSP-BF52x arch/mach support
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
2008-02-02 15:58:30 +08:00
Chip Coldwell
a66706158d atmel_serial: add DMA support
This patch is based on the DMA-patch by Chip Coldwell for the AT91/AT32 serial
USARTS, with some tweaks to make it apply neatly on top of the other patches
in this series.

The RX and TX code has been moved to a tasklet and reworked a bit.  Instead of
depending on the ENDRX and TIMEOUT bits in CSR, we simply grab as much data as
we can from the DMA buffers.  I think this closes a race where the ENDRX bit
is set after we read CSR but before we read RPR, although I haven't confirmed
this.

Similarly, the two TX handlers (ENDTX and TXBUFE) have been combined into one.
 Since the current code only uses a single TX buffer, there's no point in
handling those interrupts separately.

This also fixes a DMA sync bug in the original patch.

[linux@bohmer.net: rebased onto irq-splitup patch]
[hskinnemoen@atmel.com: moved to tasklet, fixed dma bug, misc cleanups]
[hskinnemoen@atmel.com: atmel_serial dma: Misc fixes and cleanups]
Signed-off-by: Remy Bohmer <linux@bohmer.net>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Andrew Victor <linux@maxim.org.za>
Tested-by: Marc Pignat <marc.pignat@hevs.ch>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-08 09:22:37 -08:00
Linus Torvalds
3796958130 Merge branch 'for-2.6.25' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'for-2.6.25' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (69 commits)
  [POWERPC] Add SPE registers to core dumps
  [POWERPC] Use regset code for compat PTRACE_*REGS* calls
  [POWERPC] Use generic compat_sys_ptrace
  [POWERPC] Use generic compat_ptrace_request
  [POWERPC] Use generic ptrace peekdata/pokedata
  [POWERPC] Use regset code for PTRACE_*REGS* requests
  [POWERPC] Switch to generic compat_binfmt_elf code
  [POWERPC] Switch to using user_regset-based core dumps
  [POWERPC] Add user_regset compat support
  [POWERPC] Add user_regset_view definitions
  [POWERPC] Use user_regset accessors for GPRs
  [POWERPC] ptrace accessors for special regs MSR and TRAP
  [POWERPC] Use user_regset accessors for SPE regs
  [POWERPC] Use user_regset accessors for altivec regs
  [POWERPC] Use user_regset accessors for FP regs
  [POWERPC] mpc52xx: fix compile error introduce when rebasing patch
  [POWERPC] 4xx: PCIe indirect DCR spinlock fix.
  [POWERPC] Add missing native dcr dcr_ind_lock spinlock
  [POWERPC] 4xx: Fix offset value on Warp board
  [POWERPC] 4xx: Add 440EPx Sequoia ehci dts entry
  ...
2008-02-07 09:02:26 -08:00
Maciej W. Rozycki
7287d765d5 dz: update kconfig description
Reformat the Kconfig entries and update descriptions for accuracy.  Select the
driver by default for configurations of interest.  For the curious: 32BIT
means only 32-bit DECstations support the device, not that the driver is not
64-bit clean; I have not checked that either though.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-07 08:42:24 -08:00
Paul Mackerras
1f7d4f8395 Merge branch 'for-2.6.25' of git://git.secretlab.ca/git/linux-2.6-mpc52xx into for-2.6.25 2008-02-07 11:21:09 +11:00
John Rigby
25ae3a0739 [POWERPC] mpc512x: Add MPC512x PSC support to MPC52xx psc driver
Add 512x support using the psc_ops framework established
with the previous patch.

All 512x PSCs share the same interrupt so add
IRQF_SHARED to irq flags.

Signed-off-by: John Rigby <jrigby@freescale.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-02-06 14:05:40 -07:00
Thomas Bogendoerfer
eea63e0e8a SC26XX: New serial driver for SC2681 uarts
New serial driver for SC2681/SC2691 uarts.  Older SNI RM400 machines are
using these chips for onboard serial ports.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Torben Mathiasen <device@lanana.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06 10:41:06 -08:00
Thomas Bogendoerfer
5057c98a42 serial: use SGI_HAS_ZILOG for IP22_ZILOG depends
- Use SGI_HAS_ZILOG for IP22_ZILOG depends
- remove IP22 from description, because the driver works on more than
  IP22 SGI machines

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06 10:41:06 -08:00
Uwe Kleine-König
b885b27ce6 SERIAL_NETX_CONSOLE provides console for NetX, not IMX
Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
2008-02-03 14:55:57 +02:00
Greg Ungerer
ae1b5f0d23 m68knommu: configure support for new ColdFire serial driver
Add configure support for new ColdFire serial driver.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-01 20:54:03 +11:00
Timur Tabi
d7584ed2b9 [POWERPC] qe-uart: add support for Freescale QUICCEngine UART
Add file ucc_uart.c, a serial device driver for the Freescale QUICCEngine.
Update the Kconfig and Makefile accordingly.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-23 19:34:12 -06:00
Mike Frysinger
529a73fbae Blackfin arch: punt CONFIG_BFIN -- we already have CONFIG_BLACKFIN
Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
2007-11-23 14:28:44 +08:00
Mike Frysinger
eaa854902a Blackfin serial driver Kconfig: depend on DMA not being enabled rather than a specific DMA size
Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
2007-10-21 22:30:01 +08:00
Matt LaPlante
01dd2fbf0d typo fixes
Most of these fixes were already submitted for old kernel versions, and were
approved, but for some reason they never made it into the releases.

Because this is a consolidation of a couple old missed patches, it touches both
Kconfigs and documentation texts.

Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
2007-10-20 01:34:40 +02:00
David Woodhouse
e4533b243e [POWERPC] Optionally use new device number for pmac_zilog
This adds the option for the pmac_zilog driver to use the major/minor
numbers recently allocated specifically for it (/dev/ttyPZn) instead
of the /dev/ttySn numbers.  The advantage of doing this is that it
allows the pmac_zilog and 8250 drivers to coexist.  The disadvantage
of doing this is that it is a user-visible ABI change and it will
break existing working setups on powermacs, and could be confusing to
users.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-22 14:49:21 +10:00
Adrian Bunk
7111de7643 fix SERIAL_CORE_CONSOLE driver dependencies
SERIAL_BFIN=m or SERIAL_MUX=m shouldn't allow SERIAL_CORE_CONSOLE=y.

Additionally, this patch fixes whitespace instead of tabs at the
SERIAL_MUX_CONSOLE option.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Cc: Bryan Wu <bryan.wu@analog.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-09-11 17:21:27 -07:00
Yoichi Yuasa
2174041d66 serial: fix vr41xx_siu serial console support
The serial console can select only SERIAL_VR41XX=y.

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-31 15:39:41 -07:00
Andrew Morton
57d4810ea0 revert "x86, serial: convert legacy COM ports to platform devices"
Revert 7e92b4fc34.  It broke Sébastien Dugué's
machine and Jeff said (persuasively)

  This seems like it will break decades-long-working stuff, in favor of
  breaking new ground in our favorite area, "trusting the BIOS."

  It's just not worth it for serial ports, IMO.  Serial ports are something
  that just shouldn't break at this late stage in the game.  My new Intel
  platform boxes don't even have serial ports, so I question the value of
  messing with serial port probing even more...  because...  just wait a year,
  and your box won't have a serial port either!  :)

  I certainly don't object to the use of platform devices (or isa_driver),
  but the probe change seems questionable.  That's sorta analagous to
  rewriting the floppy driver probe routine.  Sure you could do it...  but why
  risk all that damage and go through debugging all over again?

  It seems clear from this report that we cannot, should not, trust BIOS for
  something (a) so simple and (b) that has been working for over a decade.

Much discussion ensued and we've decided to have another go at all of this.

Cc: Sébastien Dugué <sebastien.dugue@bull.net>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Adam Belay <ambx1@neo.rr.com>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Jeff Garzik <jeff@garzik.org>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>
Cc: Sascha Sommer <saschasommer@freenet.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-31 15:39:38 -07:00
Maciej W. Rozycki
8b4a40809e zs: move to the serial subsystem
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 <macro@linux-mips.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-18 08:38:22 -07:00
Maciej W. Rozycki
b45d527974 sb1250-duart.c: SB1250 DUART serial support
This is a driver for the SB1250 DUART, a dual serial port implementation
included in the Broadcom family of SOCs descending from the SiByte SB1250
MIPS64 chip multiprocessor.  It is a new implementation replacing the
old-fashioned driver currently present in the linux-mips.org tree.  It
supports all the usual features one would expect from a(n asynchronous)
serial driver, including modem line control (as far as hardware supports it
-- there is edge detection logic missing from the DCD and RI lines and the
driver does not implement polling of these lines at the moment), the serial
console, BREAK transmission and reception, including the magic SysRq.  The
receive FIFO threshold is not maintained though.

The driver was tested with a SWARM board which uses a BCM1250 SOC (which is
dual MIPS64 CMP) and has both ports of the single DUART implemented wired
externally.  Both were tested.  Testing included using the ports as
terminal lines at 1200bps (which is the ports minimum), 115200bps and a
couple of random speeds inbetween.  The modem lines were verified to
operate correctly.  No testing was performed with a use as a network
interface, like with SLIP or PPP.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 10:23:03 -07:00
Yinghai Lu
18a8bd949d serial: convert early_uart to earlycon for 8250
Beacuse SERIAL_PORT_DFNS is removed from include/asm-i386/serial.h and
include/asm-x86_64/serial.h.  the serial8250_ports need to be probed late in
serial initializing stage.  the console_init=>serial8250_console_init=>
register_console=>serial8250_console_setup will return -ENDEV, and console
ttyS0 can not be enabled at that time.  need to wait till uart_add_one_port in
drivers/serial/serial_core.c to call register_console to get console ttyS0.
that is too late.

Make early_uart to use early_param, so uart console can be used earlier.  Make
it to be bootconsole with CON_BOOT flag, so can use console handover feature.
and it will switch to corresponding normal serial console automatically.

new command line will be:
	console=uart8250,io,0x3f8,9600n8
	console=uart8250,mmio,0xff5e0000,115200n8
or
	earlycon=uart8250,io,0x3f8,9600n8
	earlycon=uart8250,mmio,0xff5e0000,115200n8

it will print in very early stage:
	Early serial console at I/O port 0x3f8 (options '9600n8')
	console [uart0] enabled
later for console it will print:
	console handover: boot [uart0] -> real [ttyS0]

Signed-off-by: <yinghai.lu@sun.com>
Cc: Andi Kleen <ak@suse.de>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Gerd Hoffmann <kraxel@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-16 09:05:35 -07:00