Commit Graph

89 Commits

Author SHA1 Message Date
Eli Billauer
7051924f77 xillybus: Move out of staging
This driver has been functional and stable throughout the year it has spent
in the staging area. It has been patched for minor bugs, coding style issues
and improvements during this period.

This is the second submission of this move-out, after making several style
improvements, as suggested by Dan Carpenter.

Signed-off-by: Eli Billauer <eli.billauer@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-23 23:44:16 -07:00
Linus Torvalds
9b0cd304f2 Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
Pull drm updates from Dave Airlie:
 "Been a bit busy, first week of kids school, and waiting on other trees
  to go in before I could send this, so its a bit later than I'd
  normally like.

  Highlights:
   - core:
      timestamp fixes, lots of misc cleanups
   - new drivers:
      bochs virtual vga
   - vmwgfx:
      major overhaul for their nextgen virt gpu.
   - i915:
      runtime D3 on HSW, watermark fixes, power well work, fbc fixes,
      bdw is no longer prelim.
   - nouveau:
      gk110/208 acceleration, more pm groundwork, old overlay support
   - radeon:
      dpm rework and clockgating for CIK, pci config reset, big endian
      fixes
   - tegra:
      panel support and DSI support, build as module, prime.
   - armada, omap, gma500, rcar, exynos, mgag200, cirrus, ast:
      fixes
   - msm:
      hdmi support for mdp5"

* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (595 commits)
  drm/nouveau: resume display if any later suspend bits fail
  drm/nouveau: fix lock unbalance in nouveau_crtc_page_flip
  drm/nouveau: implement hooks for needed for drm vblank timestamping support
  drm/nouveau/disp: add a method to fetch info needed by drm vblank timestamping
  drm/nv50: fill in crtc mode struct members from crtc_mode_fixup
  drm/radeon/dce8: workaround for atom BlankCrtc table
  drm/radeon/DCE4+: clear bios scratch dpms bit (v2)
  drm/radeon: set si_notify_smc_display_change properly
  drm/radeon: fix DAC interrupt handling on DCE5+
  drm/radeon: clean up active vram sizing
  drm/radeon: skip async dma init on r6xx
  drm/radeon/runpm: don't runtime suspend non-PX cards
  drm/radeon: add ring to fence trace functions
  drm/radeon: add missing trace point
  drm/radeon: fix VMID use tracking
  drm: ast,cirrus,mgag200: use drm_can_sleep
  drm/gma500: Lock struct_mutex around cursor updates
  drm/i915: Fix the offset issue for the stolen GEM objects
  DRM: armada: fix missing DRM_KMS_FB_HELPER select
  drm/i915: Decouple GPU error reporting from ring initialisation
  ...
2014-01-29 20:49:12 -08:00
Alan
6bbdc3984e vio: remove dangly makefile bits
The drivers are long gone but some config escaped the prune

Signed-off-by: Alan Cox <gnomes@lxorguk.ukuu.org.uk>
Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=57221
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-12-03 17:35:23 +01:00
Ville Syrjälä
00fe639a56 drm/i915: Make AGP support optional
We only depend on the intel-gtt module for GTT frobbign on older gens.
The intel_agp module is optional, except for UMS and some old XvMC
userland on gen3. So make AGP support optional. As before, we will
fail the i915 init for UMS and gen3 KMS the same as before if
intel_agp isn't around.

intel-gtt.c is left with a somewhat ugly ifdef mess, but I'm going
to save that for a later cleaning.

At least my gen2 still works with the patch and CONFIG_AGP=n.

v2: Make i915 depend on X86 and PCI, and intel-gtt depend on PCI

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-11-08 18:37:32 +01:00
Matthew Garrett
061475b65c IPMI: Change link order
IPMI must be initialised before ACPI in order to ensure that any IPMI
services are available before ACPI driver initialisation attempts to use
any IPMI operation regions.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-16 18:07:12 -07:00
Anton Vorontsov
1894a253db ramoops: Move to fs/pstore/ram.c
Since ramoops was converted to pstore, it has nothing to do with character
devices nowadays. Instead, today it is just a RAM backend for pstore.

The patch just moves things around. There are a few changes were needed
because of the move:

1. Kconfig and Makefiles fixups, of course.

2. In pstore/ram.c we have to play a bit with MODULE_PARAM_PREFIX, this
   is needed to keep user experience the same as with ramoops driver
   (i.e. so that ramoops.foo kernel command line arguments would still
   work).

Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Acked-by: Marco Stornelli <marco.stornelli@gmail.com>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-05-16 08:06:37 -07:00
Greg Kroah-Hartman
0fb8379dab tty: delete briq_panel.c driver
This driver is broken, as reported by Jiri, and to quote Ben:
	Just remove the driver, I don't think anybody cares.
so I'm doing just that here.

Reported-by: Jiri Slaby <jslaby@suse.cz>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Josh Boyer <jwboyer@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-08 10:45:55 -08:00
Chris Metcalf
dbcb4a1a3f arch/tile: add hypervisor-based character driver for SPI flash ROM
The first version of this patch proposed an arch/tile/drivers/ directory,
but the consensus was that this was probably a poor choice for a place to
group Tilera-specific drivers, and that in any case grouping by platform
was discouraged, and grouping by function was preferred.

This version of the patch addresses various issues raised in the
community, primarily the absence of sysfs integration.  The sysfs
integration now handles passing information on sector size, page size,
and total partition size to userspace as well.  In addition, we now
use a single "struct cdev" to manage all the partition minor devices,
and dynamically discover the correct number of partitions from the
hypervisor rather than using a module_param with a default value.

This driver has no particular "peer" drivers it can be grouped with.
It is sort of like an MTD driver for SPI ROM, but it doesn't group well
with the other MTD devices since it relies on hypervisor virtualization
to handle many of the irritating aspects of flash ROM management: sector
awareness, background read for sub-sector writes, bit examination to
determine whether a sector erase needs to be issued, etc.  It is in fact
more like an EEPROM driver, but the hypervisor virtualization does require
a "flush" command if you wish to commit a sector write prior to writing
to a different sector, and this is sufficiently different from generic
I2C/SPI EEPROMs that as a result it doesn't group well with them either.

The simple character device is already in use by a range of Tilera
SPI ROM management tools, as well as by customers.  In addition, using
the simple character device actually simplifies the userspace tools,
since they don't need to manage sector erase, background read, etc.
This both simplifies the code (since we can uniformly manage plain files
and the SPI ROM) as well as makes the user code portable to non-Linux
platforms that don't offer the same MTD ioctls.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
2011-06-10 13:07:48 -04:00
Niranjana Vishwanathapura
73210a135b drivers/char: add MSM smd_pkt driver
Add smd_pkt driver which provides device interface to smd packet ports.

Signed-off-by: Niranjana Vishwanathapura <nvishwan@codeaurora.org>
Cc: Brian Swetland <swetland@google.com>
Cc: Greg KH <gregkh@suse.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: David Brown <davidb@codeaurora.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-23 19:46:38 -07:00
Greg Kroah-Hartman
f227e08b71 Merge 2.6.38-rc6 into tty-next
This was to resolve a merge issue with drivers/char/Makefile and
drivers/tty/serial/68328serial.c

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-24 11:36:31 -08:00
Greg Kroah-Hartman
4c37705877 tty: move obsolete and broken generic_serial drivers to drivers/staging/generic_serial/
As planned by Arnd Bergmann, this moves the following drivers to the
drivers/staging/generic_serial directory where they will be removed
after 2.6.41 if no one steps up to claim them.
	generic_serial
	rio
	ser_a2232
	sx
	vme_scc

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-22 17:09:33 -08:00
Greg Kroah-Hartman
4a6514e6d0 tty: move obsolete and broken tty drivers to drivers/staging/tty/
As planned by Arnd Bergmann, this moves the following drivers to the
drivers/staging/tty/ directory where they will be removed after 2.6.41
if no one steps up to claim them.
	epca
	epca
	ip2
	istallion
	riscom8
	serial167
	specialix
	stallion

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-22 16:57:21 -08:00
Greg Kroah-Hartman
a6afd9f3e8 tty: move a number of tty drivers from drivers/char/ to drivers/tty/
As planned by Arnd Bergmann, this moves the following drivers from
drivers/char/ to drivers/tty/ as that's where they really belong:
	amiserial
	nozomi
	synclink
	rocket
	cyclades
	moxa
	mxser
	isicom
	bfin_jtag_comm

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-22 16:14:56 -08:00
Amit Shah
51df0acc3d virtio: console: Move file back to drivers/char/
Commit 728674a7e4 moved virtio_console.c
to drivers/tty/hvc/ under the perception of this being an hvc driver.
It was such once, but these days it has generic communication
capabilities as well, so move it to drivers/char/.

In the future, the hvc part from this file can be split off and moved
under drivers/tty/hvc/.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
CC: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-03 14:43:12 -08:00
Greg Kroah-Hartman
728674a7e4 tty: move hvc drivers to drivers/tty/hvc/
As requested by Arnd Bergmann, the hvc drivers are now
moved to the drivers/tty/hvc/ directory.  The virtio_console.c driver
was also moved, as it required the hvc_console.h file to be able to be
built, and it really is a hvc driver.

Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-01-13 12:03:00 -08:00
Andres Salomon
cf8e9086de cs5535: deprecate older cs5535_gpio driver
The newer drivers/gpio/cs5535-gpio.c replaces drivers/misc/cs5535_gpio.c.
The new driver has been in the tree for a little while, and has received
some testing; it's time to mark the old one as deprecated.  I'm thinking
removal around 2.6.40 would be good, provided we're not missing critical
functionality in the newer driver.

Signed-off-by: Andres Salomon <dilinger@queued.net>
Cc: Daniel Drake <dsd@laptop.org>
Acked-by: Ben Gardner <bgardner@wabtec.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-13 08:03:13 -08:00
Daniel Walker
16c63f8ea4 drivers: char: hvc: add arm JTAG DCC console support
This driver adds a basic console that uses the arm JTAG
DCC to transfer data back and forth. It has support for
ARMv6 and ARMv7.

This console is created under the HVC driver, and should be named
/dev/hvcX (or /dev/hvc0 for example).

Cc: Tony Lindgren <tony@atomide.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Cc: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Daniel Walker <dwalker@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-30 17:27:13 -08:00
Greg Kroah-Hartman
60d4ae8d43 TTY: create drivers/tty/vt and move the vt code there
The vt and other related code is moved into the drivers/tty/vt directory.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-05 08:16:52 -07:00
Greg Kroah-Hartman
96fd7ce58f TTY: create drivers/tty and move the tty core files there
The tty code should be in its own subdirectory and not in the char
driver with all of the cruft that is currently there.

Based on work done by Arnd Bergmann <arnd@arndb.de>

Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-11-05 08:10:33 -07:00
Samo Pogacnik
24b4b67d17 add ttyprintk driver
Ttyprintk is a pseudo TTY driver, which allows users to make printk
messages, via output to ttyprintk device. It is possible to store
"console" messages inline with kernel messages for better analyses of
the boot process, for example.

Signed-off-by: Samo Pogacnik <samo_pogacnik@t-2.net>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-10-22 10:20:02 -07:00
Arnd Bergmann
b07471fa51 tty: implement BTM as mutex instead of BKL
The tty locking now follows the rules for mutexes, so
we can replace the BKL usage with a new subsystem
wide mutex.

Using a regular mutex here will change the behaviour
when blocked on the BTM from spinning to sleeping,
but that should not be visible to the user.

Using the mutex also means that all the BTM is now
covered by lockdep.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10 13:47:44 -07:00
Chris Metcalf
867e359b97 arch/tile: core support for Tilera 32-bit chips.
This change is the core kernel support for TILEPro and TILE64 chips.
No driver support (except the console driver) is included yet.

This includes the relevant Linux headers in asm/; the low-level
low-level "Tile architecture" headers in arch/, which are
shared with the hypervisor, etc., and are build-system agnostic;
and the relevant hypervisor headers in hv/.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Reviewed-by: Paul Mundt <lethal@linux-sh.org>
2010-06-04 17:11:18 -04:00
Marco Stornelli
56d611a04f char drivers: RAM oops/panic logger
Ramoops, like mtdoops, can log oops/panic information but in RAM.  It can
be used with persistent RAM for systems without flash support.  In
addition, for this systems, with this driver, it's no more needed add to
the kernel the mtd subsystem with advantage in footprint.

It can be used in a very easy way with persistent RAM for systems without
flash support.  For these systems, with this driver, it is no longer
required to cinlude mtd subsystem with an advantage in footprint.  In
addition, you can save flash space and store this information only in RAM.

Signed-off-by: Marco Stornelli <marco.stornelli@gmail.com>
Cc: Simon Kagstrom <simon.kagstrom@netinsight.net>
Cc: David Woodhouse <David.Woodhouse@intel.com>
Cc; Anders Grafstrom <anders.grafstrom@netinsight.net>
Cc: Yuasa Yoichi <yuasa@linux-mips.org>
Cc: Jamie Lokier <jamie@shareable.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-27 09:12:50 -07:00
Alan Cox
e1eaea46bb tty: n_gsm line discipline
Add an implementation of GSM 0710 MUX. The implementation currently supports

- Basic and advanced framing (as either end of the link)
- UI or UIH data frames
- Adaption layer 1-4 (1 and 2 via tty, 3 and 4 as skbuff lists)
- Modem and control messages including the correct retry process
- Flow control

and exposes the MUX channels as a set of virtual tty devices including modem
signals. This is an experimental driver.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-21 09:34:29 -07:00
Alan Cox
f53a2ade0b tty: esp: remove broken driver
The ESP driver has been marked broken for years. It's an old ISA device
that clearly nobody cares about any more. Remove it

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-11 15:18:03 -08:00
Dimitri Sivanich
fbd8ae1068 drivers/char/uv_mmtimer.c: add memory mapped RTC driver for UV
This driver memory maps the UV Hub RTC.

Signed-off-by: Dimitri Sivanich <sivanich@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-24 07:21:03 -07:00
Yoichi Yuasa
27fdd325da MIPS: Update VR41xx GPIO driver to use gpiolib
Signed-off-by: Yoichi Yuasa <yyuasa@linux.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-07-03 15:45:25 +01:00
Mike Frysinger
0b91421857 tty: bfin_jtag_comm: emulate a TTY over the Blackfin EMUDAT/JTAG interface
The Blackfin JTAG interface has a 4 byte generic data field (EMUDAT).  With
a little creative thinking, we can turn this into a TTY device.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11 08:51:06 -07:00
Linus Torvalds
3c92ec8ae9 Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (144 commits)
  powerpc/44x: Support 16K/64K base page sizes on 44x
  powerpc: Force memory size to be a multiple of PAGE_SIZE
  powerpc/32: Wire up the trampoline code for kdump
  powerpc/32: Add the ability for a classic ppc kernel to be loaded at 32M
  powerpc/32: Allow __ioremap on RAM addresses for kdump kernel
  powerpc/32: Setup OF properties for kdump
  powerpc/32/kdump: Implement crash_setup_regs() using ppc_save_regs()
  powerpc: Prepare xmon_save_regs for use with kdump
  powerpc: Remove default kexec/crash_kernel ops assignments
  powerpc: Make default kexec/crash_kernel ops implicit
  powerpc: Setup OF properties for ppc32 kexec
  powerpc/pseries: Fix cpu hotplug
  powerpc: Fix KVM build on ppc440
  powerpc/cell: add QPACE as a separate Cell platform
  powerpc/cell: fix build breakage with CONFIG_SPUFS disabled
  powerpc/mpc5200: fix error paths in PSC UART probe function
  powerpc/mpc5200: add rts/cts handling in PSC UART driver
  powerpc/mpc5200: Make PSC UART driver update serial errors counters
  powerpc/mpc5200: Remove obsolete code from mpc5200 MDIO driver
  powerpc/mpc5200: Add MDMA/UDMA support to MPC5200 ATA driver
  ...

Fix trivial conflict in drivers/char/Makefile as per Paul's directions
2008-12-28 16:54:33 -08:00
Hendrik Brueckner
44a01d5ba8 [S390] s390/hvc_console: z/VM IUCV hypervisor console support
This patch introduces a new hypervisor console (HVC) back-end that provides
terminal access over the z/VM inter-user communication vehicle (IUCV).

The z/VM IUCV communication is independent of the regular tcp/ip network
and allows access even if there is no network connection between two
z/VM guest virtual machines.
The z/VM IUCV hypervisor console back-end helps the user to access a
z/VM guest virtual machine that lacks of network connectivity; and thus,
provides a "full-screen" terminal alternative to 3215/3270 terminal sessions.

Use the hvc_iucv=[0..8] kernel boot parameter to specify the number of
HVC terminals using a z/VM IUCV back-end.

A recent version of the s390-tools package is required to establish a
terminal connection to a z/VM IUCV hypervisor console back-end.

Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25 13:39:03 +01:00
David Gibson
d5e5491343 powerpc: udbg-based backend for hvc_console
This adds a new backend for the hvc console based on the low-level
udbg callbacks.  This effectively implements a working runtime console
in terms of the simple udbg primitives.  This is kind of a hack -
since udbg isn't something you really want to be using routinely - but
it's really useful during bringup.

This can be used to quickly implement a userspace-usable console while
you're working on a proper driver for whatever console I/O device the
hardware has.  Or, it can be used to avoid writing a full blown
tty/console driver entirely for quick-and-dirty I/O hardware that will
later be replaced by something else.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-11-19 16:04:25 +11:00
Ralf Baechle
09d9327b34 CHAR: Delete old and now unused M48T35 RTC driver for SGI IP27.
It was only used by this one SGI platform which recently was converted to
RTC_LIB and with RTC_LIB enabled the legacy drivers are no more selectable.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-30 14:44:35 +00:00
Ralf Baechle
4bdebe5b4a CHAR: Delete old and now unused DS1286 driver.
It was only used by two SGI platforms which recently were converted to
RTC_LIB and with RTC_LIB enabled the legacy drivers are no more selectable.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
2008-10-30 14:44:35 +00:00
Alan Cox
9e48565d21 tty: Split tty_port into its own file
Not much in it yet but this will grow a lot

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
Alan Cox
e04957365b tty: split the buffering from tty_io
The two are basically independent chunks of code so lets split them up for
readability and sanity. It also makes the API boundaries much clearer.

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
Stephen Rothwell
4c514a5ad1 powerpc/iseries: remove the old viocons driver
This driver was declared obsolete over 2 years ago, the alternative
console driver for legacy iSeries (hvc_iseries) was made the default
over 1 year ago and this driver has been build broken for over 3
months, so remove it.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-07 18:07:10 -07:00
Linus Torvalds
ff5d48a6d1 Merge git://git.infradead.org/embedded-2.6
* git://git.infradead.org/embedded-2.6:
  Make console charset translation optional
2008-07-25 12:02:08 -07:00
Adrian Bunk
f557d0996a remove some more tipar bits
Some bits were missed when the tipar driver was removed.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-25 10:53:28 -07:00
Christian Borntraeger
611e097d77 hvc_console: rework setup to replace irq functions with callbacks
This patch tries to change hvc_console to not use request_irq/free_irq if
the backend does not use irqs. This allows virtio_console to use hvc_console
without having a linker reference to request_irq/free_irq.

In addition, together with patch 2/3 it improves the performance for virtio
console input. (an earlier version of this patch was tested by Yajin on lguest)

The irq specific code is moved to hvc_irq.c and selected by the drivers that
use irqs (System p, System i, XEN).

I replaced "int irq" with the opaque "int data". The request_irq and
free_irq calls are replaced with notifier_add and notifier_del. I have also
changed the code a bit to call the notifier_add and notifier_del inside the
spinlock area as the callbacks are found via hp->ops.

Changes since last version:
o remove ifdef
o reintroduce "irq_requested" as "notified"
o cleanups, sparse..

I did not move the timer based polling into a separate polling scheme. I
played with several variants, but it seems we need to sleep/schedule in
a thread even for irq based consoles, as there are throttleing and buffer
size constraints.

I also kept hvc_struct defined in hvc_console.h so that hvc_irq.c can access
the irq_requested element.

Feedback is appreciated. virtio_console is currently the only available console
for kvm on s390. I plan to push this change as soon as all affected parties
agree on it. I would love to get test results from System p, Xen etc.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2008-07-25 12:06:06 +10:00
Yoichi Yuasa
18b095d4b8 drivers/char: remove old broken Cobalt LCD driver
Remove old broken Cobalt LCD driver.

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:40 -07:00
Alan Cox
01e1abb2c2 tty: Split ldisc code into its own file
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-22 13:03:27 -07:00
Benjamin Herrenschmidt
43d2548bb2 Merge commit '85082fd7cbe3173198aac0eb5e85ab1edcc6352c' into test-build
Manual fixup of:

	arch/powerpc/Kconfig
2008-07-15 15:44:51 +10:00
Sonny Rao
fe9e8d5377 powerpc: Add driver for Barrier Synchronization Register
Adds a character driver for BSR support on IBM POWER systems including
Power5 and Power6.  The BSR is an optional processor facility not currently
implemented by any other processors.  It's primary purpose is fast large SMP
synchronization.  More details on the BSR are in comments to the code which
follows.  This patch adds BSR driver to pseries_defconfig.

Signed-off-by: Sonny Rao <sonnyrao@linux.vnet.ibm.com>
Signed-off-by: Joel Schopp <jschopp@austin.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-15 12:24:55 +10:00
Dave Airlie
c0e09200dc drm: reorganise drm tree to be more future proof.
With the coming of kernel based modesetting and the memory manager stuff,
the everything in one directory approach was getting very ugly and
starting to be unmanageable.

This restructures the drm along the lines of other kernel components.

It creates a drivers/gpu/drm directory and moves the hw drivers into
subdirectores. It moves the includes into an include/drm, and
sets up the unifdef for the userspace headers we should be exporting.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-07-14 10:45:01 +10:00
David Woodhouse
a29ccf6f82 Make console charset translation optional
By turning off the new CONSOLE_TRANSLATIONS option and dropping the
associated code and tables from the kernel, we can save about 7KiB.

Taken from linux-tiny project by Tim Bird and mangled further by dwmw2.

Signed-off-by: Tim Bird <tim.bird@am.sony.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-06-04 14:56:12 +01:00
Mike Frysinger
2dc63a84b2 Blackfin char driver for Blackfin on-chip OTP memory (v3)
initial char driver for otp memory
(only read supported atm ... needs real examples/docs for write support)

v2-v3:
 - fixup __initdata with __initconst, as we are heading for 2.6.26

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Acked-by: Jiri Slaby <jirislaby@gmail.com>
2008-04-25 08:04:56 +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
Jiri Slaby
1c45607ad3 Char: mxser, remove it
(Old) mxser is obsoleted by mxser_new and scheduled for removal on Dec 2007.
Remove it by renaming mxser_new to mxser.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Reviewed-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-07 08:42:34 -08:00
Stephen Neuendorffer
ef141a0bb0 [POWERPC] Xilinx: hwicap driver
This includes code for new fifo-based xps_hwicap in addition to the
older opb_hwicap, which has a significantly different interface.  The
common code between the two drivers is largely shared.

Significant differences exists between this driver and what is
supported in the EDK drivers.  In particular, most of the
architecture-specific code for reconfiguring individual FPGA resources
has been removed.  This functionality is likely better provided in a
user-space support library.  In addition, read and write access is
supported.  In addition, although the xps_hwicap cores support
interrupt-driver mode, this driver only supports polled operation, in
order to make the code simpler, and since the interrupt processing
overhead is likely to slow down the throughput under Linux.

Signed-off-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-02-06 10:23:52 -07:00
Frank Seidel
20fd1e3bea nozomi driver
This is a driver to control the cardbus wireless data card that works on
3g networks.

Greg Kroah-Hartman <gregkh@suse.de> did the initial driver cleanup.
Thanks to Arnaud Patard <apatard@mandriva.com> for help with bugfixing.
Thanks to Alan Cox for a lot of tty fixes.
Thanks to Satyam Sharma <satyam@infradead.org> for fixing buildbreakage.
Thanks to Frank Seidel <fseidel@suse.de> for a lot of bugfixes and
rewriting to make it a sane Linux driver
Thanks to Jiri Slaby <jirislaby@gmail.com> for a lot bugfixes, cleanups
and rewrites that make it much more readable.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Frank Seidel <fseidel@suse.de>
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
2008-01-24 20:40:04 -08:00