linux-toradex.git/drivers/video/geode/lxfb_ops.c, branch v3.0.7

lxfb: Maintain video processor palette through suspend/resume

2010-12-01T09:18:56+00:00

The Geode X driver uses both of the LX's palettes, one for gamma
correction and one for colormaps.

The kernel driver currently only backs up the one used for colormaps
during suspend/resume. If you mess with gamma settings and do a
suspend/resume, colors go funny.

Fix this by backing up the video proc palette during suspend/resume,
alongside the display controller one which is already handled.

Signed-off-by: Daniel Drake 
Acked-by: Andres Salomon 
Signed-off-by: Paul Mundt

lxfb: Program panel v/h sync output polarity correctly

2010-11-17T05:55:46+00:00

Commit b5c26f97ec4a17c65 introduced some breakage for the OLPC XO-1 laptop,
differences in the output video signal after the patch caused some problems
with the XO's display controller chip.

Reviewing of that commit against the AMD Geode LX Data Book, it seems
that these bits were being set inversely. In both cases, active high
output is denoted by a value of 0. See section 6.8.3.44 of the databook
from February 2009 (Publication ID: 33234H)

Signed-off-by: Daniel Drake 
Signed-off-by: Paul Mundt

lxfb: set the H- and V-SYNC polarity of the flatpanel output

2010-03-24T23:31:22+00:00

Fixup for the flatpanel output.  The geode_modedb attribute flags are used
to set the SYNC polarity of the flatpanel.  Without this patch our
flatpanel registers stayed unconfigured, so we just saw garbage output.

Signed-off-by: Michael Grzeschik 
Cc: Andres Salomon 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

cs5535: define lxfb/gxfb MSRs in linux/cs5535.h

2009-12-15T16:53:28+00:00

..and include them in the lxfb/gxfb drivers rather than asm/geode.h (where
possible).

Signed-off-by: Andres Salomon 
Cc: Jordan Crouse 
Cc: Ingo Molnar 
Cc: Thomas Gleixner 
Cc: john stultz 
Cc: Chris Ball 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

cs5535: move VSA2 checks into linux/cs5535.h

2009-12-15T16:53:28+00:00

Signed-off-by: Andres Salomon 
Cc: Jordan Crouse 
Cc: Ingo Molnar 
Cc: Thomas Gleixner 
Cc: john stultz 
Cc: Chris Ball 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

lxfb: fix console blanking

2008-07-24T17:47:40+00:00

Simply enabling DAC blanking without turning off the CRT seems to be resulting
in characters remaining on the screen when the monitor blanks.  This patch
turns off the CRT for all modes, and also powers down the DACs when vsync
and/or hsync are disabled.

Signed-off-by: Jordan Crouse 
Acked-by: Andres Salomon 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

fix "lxfb: extend PLL table to support dotclocks below 25 MHz"

2008-05-15T02:11:13+00:00

The following patch caused a regression with OLPC panels:

 commit 3888d4639e78802c4ec1086127124e890461b9e4
    lxfb: extend PLL table to support dotclocks below 25 MHz

    Extends the PLL frequency table of the AMD Geode-LX frame buffer driver to
    make use of the DIV4 bit, thus adding support for dotclocks between 6 and 25
    MHz.  These are needed for small LCDs (e.g.  320x240).  Also inserts some
    intermediate steps between pre-existing frequencies.

The problem was the insertion of intermediate steps into the frequency
table; they would cause the wrong frequency to be matched.  This patch
drops those intermediate frequencies while keeping the sub-25MHz
frequencies.

Signed-off-by: Andres Salomon 
Signed-off-by: Jens Rottmann 
Tested-by: Andres Salomon 
Acked-by: Jordan Crouse 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

gxfb/lxfb: detect framebuffer size using an MSR if VSA2 isn't available

2008-04-28T15:58:40+00:00

If there's no VSA2 (ie, if we're using tinybios or OpenFirmware), use the
GLIU's P2D Range Offset Descriptor to determine how much memory we have
available for the framebuffer.

Originally based on a patch by Jordan Crouse.  Tested with OpenFirmware;
Pascal informs me that tinybios has a stub that fills in P2D_RO0.

Signed-off-by: Andres Salomon 
Cc: Jordan Crouse 
Cc: "Antonino A. Daplas" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

gxfb/lxfb: use VSA definitions when fetching framebuffer size

2008-04-28T15:58:40+00:00

..Rather than using magic constants.

Signed-off-by: Andres Salomon 
Cc: Jordan Crouse 
Cc: "Antonino A. Daplas" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

lxfb/gxfb: when blanking with FB_BLANK_POWERDOWN, also turn off the CRT

2008-04-28T15:58:40+00:00

The Display Control's CRT_EN can be shut off when we enter FB_BLANK_POWERDOWN
in an attempt to save additional power.

Signed-off-by: Andres Salomon 
Cc: Jordan Crouse 
Cc: "Antonino A. Daplas" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds