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: NBernie Thompson <bernie@plugable.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

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: NBernie Thompson <bernie@plugable.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

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: NBernie Thompson <bernie@plugable.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

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: NBernie Thompson <bernie@plugable.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

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: NBernie Thompson <bernie@plugable.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Reorganize the location of a few things to be closer to related code
Signed-off-by: NBernie Thompson <bernie@plugable.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Eliminate checkpatch.pl warnings and errors so later patches in series are clean
Signed-off-by: NBernie Thompson <bernie@plugable.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Remove dead code from r8185b_init.c.
Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

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: NLarry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Remove a routine that is not used.
Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Cleanups as suggested by checkpatch.pl utiltiy.
.o's from before and after cleanup have matching SHA1s.
Signed-off-by: NSvenne Krap <svenne@krap.dk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Trivial changes to code-paths.
Signed-off-by: NSvenne Krap <svenne@krap.dk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This is a patch to ni_atmio.c file to fix up bracing style problems
found by checkpatch.pl tool
Signed-off-by: NGraham M Howe <gman.1352@googlemail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

It's clear from the indent levels and the context that there are supposed to
be curly braces here.
Signed-off-by: NDan Carpenter <error27@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

The current driver does not follow the state of the RF switch.
Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

The TODO list includes switching this driver to use the common EEPROM
routines in EEPROM_93CX.
Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Tested by: Bernhard Schiffner <bernhard@schiffner-limbach.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Removed parenthesis from return statements,
split up assignment and if condition
Signed-off-by: NJochen Maes <jochen.maes@sejo.be>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Fixed code style issues.
Signed-off-by: NJochen Maes <jochen.maes@sejo.be>
Acked-by: NPavel Machek <pavel@ucw.cz>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Fixed Codestyle issues
Signed-off-by: NJochen Maes <jochen.maes@sejo.be>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This fixes all checkpatch issues in the rti800 comedi driver.
Signed-off-by: NBenjamin Adolphi <b.adolphi@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Add suspend and resume functions (which are currently stubs
returning -ENOSYS)
Signed-off-by: NMark Allyn <mark.a.allyn@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Signed-off-by: NMark Allyn <mark.a.allyn@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Signed-off-by: NMark Allyn <mark.a.allyn@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Provides a better explanation of what this
driver is for in the Kconfig file
Signed-off-by: NMark Allyn <mark.a.allyn@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Renames the directory in which the driver files
are located; again for clarity.
Signed-off-by: NMark Allyn <mark.a.allyn@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Patch renames rar_driver to rar_register to clarifiy and differentiate
from rar_handler that will be submitted later
Signed-off-by: NMark Allyn <mark.a.allyn@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

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: NGreg Kroah-Hartman <gregkh@suse.de>

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: NGreg Kroah-Hartman <gregkh@suse.de>

Use u32 and u64 instead, that's the proper thing to do.

Cc: Scott Smedley <ss@aao.gov.au>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Use u8 instead, that's the proper thing to do.

Cc: Scott Smedley <ss@aao.gov.au>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This fixes up some coding style issues in the dt3155_io.h file

Cc: Scott Smedley <ss@aao.gov.au>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This fixes the build warnings in the dt3155 driver

Cc: Scott Smedley <ss@aao.gov.au>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Fixed a coding style issue.

Created during the keynote presentation at FOSDEM 2010
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This fixes almost all checkpatch issues in the ni_pcidio comedi driver.
Signed-off-by: NBenjamin Adolphi <b.adolphi@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This fixes all checkpatch issues in the rti802 comedi driver.
Signed-off-by: NBenjamin Adolphi <b.adolphi@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This fixes all checkpatch issues in the dt2815 comedi driver.
Signed-off-by: NBenjamin Adolphi <b.adolphi@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This fixes some lines over 80 characters coding style issues.
Signed-off-by: NChihau Chau <chihau@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Use DECLARE_WAIT_QUEUE_HEAD_ONSTACK to make lockdep happy
Signed-off-by: NYong 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: NGreg Kroah-Hartman <gregkh@suse.de>

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: NTim Schofield <tim@weberpafrica.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This patch to the comedi_fops.c file fixes a brace warning found by the checkpatch.pl tool
Signed-off-by: NPaul Elms <paul@uprocera.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>