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Add support for fbdev mmap clients who don't send damage ioctls
Because DisplayLink devices are out on the other end of usb, their
"framebuffer" is just normal system memory. So memory mapped writes
don't automatically trigger anything. So up to this point, standard
fbdev clients who rely on mmap() will get an unchanging screen.
This patch makes udlfb a client of Jaya Kumar's defio framework - which sets
up page fault triggers, and those faults are accumulated and sent to udlfb
on a defferred basis, to process as damage notifications for the framebuffer.
Because this involves more overhead than a notification directly from
the application (e.g. just passing on X DAMAGE extension notifications),
a sysfs attribute is provided by udlfb to control defio support.
/sys/class/graphics/fb*/use_defio - writing a "0" to this file before
calling mmap() causes defio to not be initialized - instead udlfb
will rely on getting damage notifications directly through the damage ioctl.
There are unsolved rendering problems with defio (horizontal dead regions
on framebuffer, that accumulate over time) which still needs a fix.
Signed-off-by: Bernie Thompson <bernie@plugable.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Rework rendering for improved performance
Approx 10-20% gain avg across several "benchmarks": x11perf, gtkperf, glxgears
Moves from a single pre-alloc'd urb protected by a long-held mutex
To a list of (4) pre-alloc'd urbs which can be dispatched asynchonously
Improved rendering algorithm to hardware with lower CPU consumption,
fewer system memory accesses, and slightly higher compression.
Better scalability to multiple processors, especially with
multiple framebuffers active.
Signed-off-by: Bernie Thompson <bernie@plugable.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Rework probe to use refcounts and std functions
Because the different parts of the driver (usb, fbdev) tear down
in different orders, the driver previously could crash accessing
data that had already been freed. Refcounting system used to handle.
Reworked probe to make use of refcounts, set mode using std fbops,
and set up sysfs and pre-allocated urbs.
Signed-off-by: Bernie Thompson <bernie@plugable.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Add sysfs controls for edid and performance metrics
There are 8 new files exposed in /sys/class/graphics/fb*
edid - returns 128 byte edid blog, suitable for parsing with parse-edid
metrics_bytes_identical
metrics_bytes_rendered
metrics_bytes_sent
metrics_cpu_kcycles_used
metrics_misc
and metrics_reset, which resets all perf metrics to zero
The 6 perf metrics are of type atomic_t.
So these metrics return precise results for short benchmarks, but
any test approx a minute or longer runtime may roll over.
Signed-off-by: Bernie Thompson <bernie@plugable.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Move to more consistent naming scheme
All udlfb functions start with udlfb_
All functions for udlfb's fbdev interface start with udlfb_ops_
All functinos for udlfb's usb interface start with udlfb_usb_
Signed-off-by: Bernie Thompson <bernie@plugable.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Add functions to pre-allocate and free usb bulk urbs for core render path.
Udlfb currently allocates a single urb, guarded by a mutex, that is a key
bottleneck. Because udlfb sends so much data, preallocation is most efficient.
Functions will be used by new rendering functions in later patches.
Signed-off-by: Bernie Thompson <bernie@plugable.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Reorganize the location of a few things to be closer to related code
Signed-off-by: Bernie Thompson <bernie@plugable.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Eliminate checkpatch.pl warnings and errors so later patches in series are clean
Signed-off-by: Bernie Thompson <bernie@plugable.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Remove dead code from r8185b_init.c.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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For the RTL8187SE, the variable priv->rf_chip is always RF_ZEBRA4
and priv->RegThreeWireMode is always HW_THREE_WIRE_SI. Remove these
2 variables.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Remove a routine that is not used.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Cleanups as suggested by checkpatch.pl utiltiy.
.o's from before and after cleanup have matching SHA1s.
Signed-off-by: Svenne Krap <svenne@krap.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Trivial changes to code-paths.
Signed-off-by: Svenne Krap <svenne@krap.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This is a patch to ni_atmio.c file to fix up bracing style problems
found by checkpatch.pl tool
Signed-off-by: Graham M Howe <gman.1352@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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It's clear from the indent levels and the context that there are supposed to
be curly braces here.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The current driver does not follow the state of the RF switch.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The TODO list includes switching this driver to use the common EEPROM
routines in EEPROM_93CX.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Tested by: Bernhard Schiffner <bernhard@schiffner-limbach.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Removed parenthesis from return statements,
split up assignment and if condition
Signed-off-by: Jochen Maes <jochen.maes@sejo.be>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Fixed code style issues.
Signed-off-by: Jochen Maes <jochen.maes@sejo.be>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Fixed Codestyle issues
Signed-off-by: Jochen Maes <jochen.maes@sejo.be>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This fixes all checkpatch issues in the rti800 comedi driver.
Signed-off-by: Benjamin Adolphi <b.adolphi@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Add suspend and resume functions (which are currently stubs
returning -ENOSYS)
Signed-off-by: Mark Allyn <mark.a.allyn@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Mark Allyn <mark.a.allyn@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Mark Allyn <mark.a.allyn@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Provides a better explanation of what this
driver is for in the Kconfig file
Signed-off-by: Mark Allyn <mark.a.allyn@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Renames the directory in which the driver files
are located; again for clarity.
Signed-off-by: Mark Allyn <mark.a.allyn@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Patch renames rar_driver to rar_register to clarifiy and differentiate
from rar_handler that will be submitted later
Signed-off-by: Mark Allyn <mark.a.allyn@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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It turns out that Mimio has a userspace solution for this product using
libusb, and the in-kernel driver is just getting in the way now and
causing problems. So they have asked that the in-kernel driver be
removed. As the staging driver wasn't quite working anyway, and Mimio
supports their libusb solution for all distros, I am removing the
in-kernel driver.
The libusb solution can be downloaded from:
http://www.mimio.com/downloads/mimio_studio_software/linux.asp
Cc: <mwilder@cs.nmsu.edu>
Cc: Phil Hannent <phil@hannent.co.uk>
Cc: Marc Rousseau <Marc.Rousseau@mimio.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This fixes up the sparse and coding style issues found in the
dt3155_io.c file.
No code is changed, only formatting and removing unused code.
Cc: Scott Smedley <ss@aao.gov.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Use u32 and u64 instead, that's the proper thing to do.
Cc: Scott Smedley <ss@aao.gov.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Use u8 instead, that's the proper thing to do.
Cc: Scott Smedley <ss@aao.gov.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This fixes up some coding style issues in the dt3155_io.h file
Cc: Scott Smedley <ss@aao.gov.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This fixes the build warnings in the dt3155 driver
Cc: Scott Smedley <ss@aao.gov.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Fixed a coding style issue.
Created during the keynote presentation at FOSDEM 2010
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This fixes almost all checkpatch issues in the ni_pcidio comedi driver.
Signed-off-by: Benjamin Adolphi <b.adolphi@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This fixes all checkpatch issues in the rti802 comedi driver.
Signed-off-by: Benjamin Adolphi <b.adolphi@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This fixes all checkpatch issues in the dt2815 comedi driver.
Signed-off-by: Benjamin Adolphi <b.adolphi@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This fixes some lines over 80 characters coding style issues.
Signed-off-by: Chihau Chau <chihau@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Use DECLARE_WAIT_QUEUE_HEAD_ONSTACK to make lockdep happy
Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Cc: Alexander Beregalov <a.beregalov@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This is a patch to the r8180_93cx6.c file that fixes up spacing issue
warnings found by the checkpatch.pl tool
Signed-off-by: Tim Schofield <tim@weberpafrica.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch to the comedi_fops.c file fixes a brace warning found by the checkpatch.pl tool
Signed-off-by: Paul Elms <paul@uprocera.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch fixes all of the brace style warnings found by the
checkpatch.pl tool
Signed-off-by: Tony Burrows <tony@tonyburrows.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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String constants that are continued on subsequent lines with \
are not good.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Remove iw_handle_def private initialisations as they are no longer need
these.
Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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String constants that are continued on subsequent lines with \
are not good.
Fixed a "is tryied" / tried typo
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This fixes all checkpatch issues in the adq12b comedi driver.
Signed-off-by: Benjamin Adolphi <b.adolphi@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This fixes all checkpatch issues in the fl512 comedi driver.
Signed-off-by: Benjamin Adolphi <b.adolphi@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This fixes all checkpatch issues in the ni_65xx comedi driver.
Signed-off-by: Benjamin Adolphi <b.adolphi@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This fixes all checkpatch issues in the ni_670x comedi driver.
Signed-off-by: Benjamin Adolphi <b.adolphi@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This fixes all checkpatch issues in the ni_660x comedi driver.
Signed-off-by: Benjamin Adolphi <b.adolphi@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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