linux-toradex.git/drivers/video/matrox/matroxfb_base.c, branch v2.6.23.17

matroxfb: color setting fixes

2007-07-17T17:23:13+00:00

- the pseudo_palette is only 16 elements long.
- do not write to the pseudo_palette if regno (array index) is more than 15
- remove code that writes to the 17th entry of the pseudo_palette

Signed-off-by: Antonino Daplas 
Acked-by: Petr Vandrovec 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

PCI: Change all drivers to use pci_device->revision

2007-07-11T23:02:10+00:00

Instead of all drivers reading pci config space to get the revision
ID, they can now use the pci_device->revision member.

This exposes some issues where drivers where reading a word or a dword
for the revision number, and adding useless error-handling around the
read. Some drivers even just read it for no purpose of all.

In devices where the revision ID is being copied over and used in what
appears to be the equivalent of hotpath, I have left the copy code
and the cached copy as not to influence the driver's performance.

Compile tested with make all{yes,mod}config on x86_64 and i386.

Signed-off-by: Auke Kok 
Acked-by: Dave Jones 
Signed-off-by: Greg Kroah-Hartman

Fix misspellings collected by members of KJ list.

2007-05-09T05:14:03+00:00

Fix the misspellings of "propogate", "writting" and (oh, the shame
:-) "kenrel" in the source tree.

Signed-off-by: Robert P. J. Day 
Signed-off-by: Adrian Bunk

[PATCH] getting rid of all casts of k[cmz]alloc() calls

2006-12-13T17:05:58+00:00

Run this:

	#!/bin/sh
	for f in $(grep -Erl "\([^\)]*\) *k[cmz]alloc" *) ; do
	  echo "De-casting $f..."
	  perl -pi -e "s/ ?= ?\([^\)]*\) *(k[cmz]alloc) *\(/ = \1\(/" $f
	done

And then go through and reinstate those cases where code is casting pointers
to non-pointers.

And then drop a few hunks which conflicted with outstanding work.

Cc: Russell King , Ian Molton 
Cc: Mikael Starvik 
Cc: Yoshinori Sato 
Cc: Roman Zippel 
Cc: Geert Uytterhoeven 
Cc: Ralf Baechle 
Cc: Paul Mackerras 
Cc: Kyle McMartin 
Cc: Benjamin Herrenschmidt 
Cc: Martin Schwidefsky 
Cc: "David S. Miller" 
Cc: Jeff Dike 
Cc: Greg KH 
Cc: Jens Axboe 
Cc: Paul Fulghum 
Cc: Alan Cox 
Cc: Karsten Keil 
Cc: Mauro Carvalho Chehab 
Cc: Jeff Garzik 
Cc: James Bottomley 
Cc: Ian Kent 
Cc: Steven French 
Cc: David Woodhouse 
Cc: Neil Brown 
Cc: Jaroslav Kysela 
Cc: Takashi Iwai 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

IRQ: Maintain regs pointer globally rather than passing to IRQ handlers

2006-10-05T14:10:12+00:00

Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells 
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)

[PATCH] matroxfb: Honor the return value of pci_register_driver

2006-10-03T15:04:10+00:00

Check the return value of pci_register_driver()

Signed-off-by: Antonino Daplas 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] irq-flags: video: Use the new IRQF_ constants

2006-07-02T20:58:53+00:00

Signed-off-by: Thomas Gleixner 
Cc: Ingo Molnar 
Cc: "David S. Miller" 
Cc: Benjamin Herrenschmidt 
Cc: "Antonino A. Daplas" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Remove obsolete #include

2006-06-30T17:25:36+00:00

Signed-off-by: Jörn Engel 
Signed-off-by: Adrian Bunk

V4L/DVB (4210a): git-dvb versus matroxfb

2006-06-25T05:05:25+00:00

drivers/video/matrox/matroxfb_base.c: In function 'matroxfb_ioctl':
drivers/video/matrox/matroxfb_base.c:1140: error: 'VIDIOC_S_CTRL_OLD' undeclared (first use in this function)
drivers/video/matrox/matroxfb_base.c:1140: error: (Each undeclared identifier is reported only once                                                             drivers/video/matrox/matroxfb_base.c:1140: error: for each function it appears in.)

Signed-off-by: Andrew Morton 
Signed-off-by: Mauro Carvalho Chehab

[PATCH] powerpc: Kill _machine and hard-coded platform numbers

2006-03-28T12:15:54+00:00

This removes statically assigned platform numbers and reworks the
powerpc platform probe code to use a better mechanism.  With this,
board support files can simply declare a new machine type with a
macro, and implement a probe() function that uses the flattened
device-tree to detect if they apply for a given machine.

We now have a machine_is() macro that replaces the comparisons of
_machine with the various PLATFORM_* constants.  This commit also
changes various drivers to use the new macro instead of looking at
_machine.

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Paul Mackerras