linux-toradex.git/drivers/video, branch v2.6.28.9

fbdev/atyfb: Fix DSP config on some PowerMacs & PowerBooks

2009-02-06T21:47:18+00:00

commit 7fbb7cadd062baf299fd8b26a80ea99da0c3fe01 upstream.

Since the complete re-write in 2.6.10, some PowerMacs (At least PowerMac 5500
and PowerMac G3 Beige rev A) with ATI Mach64 chip have suffered from unstable
columns in their framebuffer image. This seems to depend on a value (4) read
from PLL_EXT_CNTL register, which leads to incorrect DSP config parameters to
be written to the chip. This patch uses a value calculated by aty_init_pll_ct
instead, as a starting point.

There are questions as to whether this should be extended to other platforms
or maybe made dependent on specific chip types, but in the meantime, this has
been tested on various powermacs and works for them so let's commit it.

Signed-off-by: Risto Suominen 
Tested-by: Michael Pettersson 
Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Greg Kroah-Hartman

Revert "radeonfb: accelerate imageblit and other improvements"

2008-12-11T00:53:32+00:00

This reverts commit b1ee26bab14886350ba12a5c10cbc0696ac679bf, along with
the "fixes" for it that all just caused problems:

 - c4c6fa9891f3d1bcaae4f39fb751d5302965b566 "radeonfb: fix problem with
   color expansion & alignment"

 - f3179748a157c21d44d929fd3779421ebfbeaa93 "radeonfb: Disable new color
   expand acceleration unless explicitely enabled"

because even when disabled, it breaks for people. See

	http://bugzilla.kernel.org/show_bug.cgi?id=12191

for the latest example.

Acked-by: Benjamin Herrenschmidt 
Acked-by: David S. Miller 
Cc: Krzysztof Halasa 
Cc: James Cloos 
Cc: "Rafael J. Wysocki" 
Cc: Krzysztof Helt 
Cc: Jean-Luc Coulon 
Cc: Andrew Morton 
Signed-off-by: Linus Torvalds

drivers/video/mb862xx/mb862xxfb.c: fix printk

2008-12-10T16:01:54+00:00

sparc64:

drivers/video/mb862xx/mb862xxfb.c:929: warning: long long unsigned int format, resource_size_t arg (arg 4)
drivers/video/mb862xx/mb862xxfb.c:931: warning: long long unsigned int format, resource_size_t arg (arg 4)

We don't know what type the architecture uses to implement u64, hence they
cannot be printed.

Cc: Anatolij Gustschin 
Cc: Dmitry Baryshkov 
Cc: Anton Vorontsov 
Cc: Matteo Fortini 
Cc: Krzysztof Helt 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

fbcon: fix workqueue shutdown

2008-12-10T16:01:53+00:00

Add a call to cancel_work_sync() in fbcon_exit() to cancel any pending
work in the fbcon workqueue.

The current implementation of fbcon_exit() sets the fbcon workqueue
function info->queue.func to NULL, but does not assure that there is no
work pending when it does so.  On occasion, depending on system timing,
there will still be pending work in the queue when fbcon_exit() is
called.  This results in a null pointer deference when run_workqueue()
tries to call the queue's work function.

Fixes errors on shutdown similar to these:

  Console: switching to colour dummy device 80x25
  Unable to handle kernel paging request for data at address 0x00000000

Signed-off-by: Geoff Levand 
Cc: Krzysztof Helt 
Cc: Geert Uytterhoeven 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Merge master.kernel.org:/home/rmk/linux-2.6-arm

2008-12-09T16:29:31+00:00

* master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] Fix alignment fault handling for ARMv6 and later CPUs
  [ARM] 5340/1: fix stack placement after noexecstack changes
  [ARM] 5339/1: fix __fls() on ARM
  [ARM] Orion: fix bug in pcie configuration cycle function field mask
  [ARM] omap: fix a pile of issues

radeonfb: Disable new color expand acceleration unless explicitely enabled

2008-12-09T16:24:38+00:00

This new color expansion acceleration for radeonfb appears to trigger
problems with X on VT switch and suspend/resume on some machines. It
might be a problem in the VT layer or in X, but I haven't quite found
it yet, so in the meantime, this disables the acceleration by default,
reverting to 2.6.27 state. It can be enabled using the "accel_cexp"
module parameter or fbdev argument.

Signed-off-by: Benjamin Herrenschmidt 
Acked-by: David S. Miller 
Signed-off-by: Linus Torvalds

macfb: Do not overflow fb_fix_screeninfo.id

2008-12-02T19:27:15+00:00

Don't overflow the 16-character fb_fix_screeninfo id string (fixes some 
console erasing and blanking artifacts). Have the ID default to "Unknown" 
on machines with no built-in video and no nubus devices. Check for 
fb_alloc_cmap failure.

Signed-off-by: Finn Thain 
Signed-off-by: Geert Uytterhoeven

fbdev: fix FB console blanking

2008-12-02T03:55:25+00:00

The commit aef7db4bd5a3b6068dfa05919a3d685199eed116 fixed the problem with
recursive locking in fb blanking code if blank is caused by user setting
the /sys/class/graphics/fb*/blank.  However this broke the fbcon timeout
blanking.

If you use a driver that defines ->fb_blank operation and at the same time
that driver relies on other driver (e.g.  backlight or lcd class) to blank
the screen, when the fbcon times out and tries to blank the fb, it will
call only fb driver blanker and won't notify the other driver.  Thus FB
output is disabled, but the screen isn't blanked.

Restore fbcon blanking and at the same time apply the proper fix for the
above problem: if fbcon_blank is called with FBINFO_FLAG_USEREVENT, we are
already called through notification from fb_blank, thus we don't have to
blank the fb again.

Signed-off-by: Dmitry Baryshkov 
Cc: Geert Uytterhoeven 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

radeonfb: fix problem with color expansion & alignment

2008-12-02T03:55:24+00:00

The engine on some radeon variants locks up if color expansion is called
for non aligned source data.  This patch enables a feature of the core
fbdev to request aligned input pixmaps and uses the HW clipping engine to
clip the output to the requested size

Addresses http://bugzilla.kernel.org/show_bug.cgi?id=11875

Signed-off-by: Benjamin Herrenschmidt 
Tested-by: James Cloos 
Cc: "Rafael J. Wysocki" 
Cc: "David S. Miller" 
Cc: Krzysztof Helt 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[ARM] omap: fix a pile of issues

2008-12-01T17:40:54+00:00

This patch fixes a number of sillies, from missing 'const' to using
'return' in void functions, to functions with no arguments not even
'void' and a cast which isn't required.

Acked-by: Tony Lindgren 
Signed-off-by: Russell King