linux.git/drivers/video/console, branch v2.6.22-rc4

fbdev: Move declaration of fb_class to

2007-06-01T15:18:28+00:00

Move the forward declaration of fb_class from drivers/video/console/fbcon.h to
, together with the other forward declarations related to
drivers/video/fbmem.c.

This kills the following sparse warning:
| drivers/video/fbmem.c:1363:14: warning: symbol 'fb_class' was not declared. Should it be static?

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

Refine SCREEN_INFO sanity check for vgacon initialization

2007-05-17T12:23:04+00:00

Refine SCREEN_INFO sanity check for vgacon initialization.

Checking video mode field only to see whenever SCREEN_INFO is
initialized is not enougth, in some cases it is zero although
a vga card is present.  Lets additionally check cols and lines.

Signed-off-by: Gerd Hoffmann 
Cc: Rusty Russell 
Cc: Andi Kleen 
Cc: Alan 
Cc: Ingo Molnar 
Acked-by: Eric W. Biederman 
Cc: "H. Peter Anvin" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

VIDEO: remove archaic if[] construct from Kconfig file

2007-05-11T15:29:37+00:00

Remove the obsolete "if [ ]" construct from the video console Kconfig
file.

Signed-off-by: Robert P. J. Day 
Acked-by: James Simmons 
Cc: "Antonino A. Daplas" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

fix file specification in comments

2007-05-09T06:58:16+00:00

Many files include the filename at the beginning, serveral used a wrong one.

Signed-off-by: Uwe Kleine-König 
Signed-off-by: Adrian Bunk

vgacon: disallow console operations when in KD_GRAPHICS mode

2007-05-08T18:15:33+00:00

Reported by James Pearson as:

	 boot to run level 3

	 if not root, then make sure /dev/console is writeable

	 login and type:

	 setterm -blank 0

	 start X

	 type into an xterm:

	 while true; do echo "" > /dev/console; usleep 100000; done

	 while the above loop is running switch to the text console and back
	 again (Ctrl-Alt-F1 then Ctrl-Alt-F7)

	 ... and the screen will be shifting (and wrapping) to the left.

This problem stems from continuously writing text to the system console (which
is in KD_TEXT mode) while the foreground console is in KD_GRAPHICS
mode. Somewhere along the way, console printing got confused and omitted the
KD_GRAPHICS/KD_TEXT test.  Thus, vgacon attempted to scroll the screen of X,
which causes X to shift.

Fix by disallowing vgacon to touch the hardware when the vc is in KD_GRAPHICS
mode. A definitive fix entails a full audit of the console code.

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

fbcon: check console-fb mapping in fbcon_get_requirement

2007-05-08T18:15:33+00:00

- Check the console-to-fb mapping in fbcon_get_requirement(), otherwise the
  value returned may not be valid for the driver.

- Minor cleanup

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

fbdev: fbcon: check if mode can handle new screen

2007-05-08T18:15:32+00:00

Check if the mode can properly display the screen.  This will be needed by
drivers where the capability is not constant with each mode.  The function
fb_set_var() will query fbcon the requirement, then it will query the driver
(via a new hook fb_get_caps()) its capability.  If the driver's capability
cannot handle fbcon's requirement, then fb_set_var() will fail.

For example, if a particular driver supports 2 modes where:

mode1 = can only display 8x16 bitmaps
mode2 = can display any bitmap

then if current mode = mode2 and current font = 12x22

fbset  /* mode1 cannot handle 12x22 */
fbset will fail

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

fbcon: check if the character count can be handled

2007-05-08T18:15:31+00:00

Fontmaps can be 256 or 512 in length. The only driver that can do tileblitting
can only handle 256 characters.  Check for this when setting the font.

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

fbcon: font setting should check limitation of driver

2007-05-08T18:15:31+00:00

fbcon_set_font() will now check if the new font dimensions can be drawn by the
driver (by checking pixmap.blit_x and blit_y).  Similarly, add 2 new
parameters to get_default_font(), font_w and font_h, to further aid in the
font selection process.

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

fbcon: delay screen update when setting the mode of all consoles

2007-05-08T18:15:29+00:00

If the current framebuffer console is rotated (rotate != 0), doing an
"fbset -a" will corrupt the current console.  Fix by updating the current
console only after all non-visible consoles have been updated.

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