linux-stable.git/drivers/video/geode, branch linux-2.6.28.y

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

lxfb: drop dead declarations from header

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

We never sent the gamma stuff upstream, and don't really care about it.
However, lx_[gs]_et_gamma prototypes snuck into lxfb.h anyways; there are
no definitions for them.  Drop the dead code.

Signed-off-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

OLPC: gxfb/lxfb: add DCON panel modes to framebuffer drivers

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

Since there's no way to autodetect panel modes, we're forced to hardcode them
in the driver and add a big fat #ifdef.  The OLPC DCON needs a specific mode
line (at 1200x900).  This adds it to both gxfb and lxfb.

(Jordan said: We could probably detect the panel mode, but there isn't any
reason to since the panel timings are well known and won't change.  While OFW
detection would be good computer science fu, it would be a wasted effort since
its so easy to hard code them into the table.)

Signed-off-by: Andres Salomon 
Cc: Jordan Crouse 
Cc: "Antonino A. Daplas" 
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

lxfb: disable suspend VT switch by default

2008-04-28T15:58:39+00:00

By default disable VT switch, but allow it to be overridden via the
'vt_switch' module arg.

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

lxfb: rename kernel arg fbsize to vram

2008-04-28T15:58:39+00:00

Match other fb drivers (including gxfb).  Also, document the current boot
arguments in Documentation/fb/lxfb.txt.

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

lxfb: add power management functionality

2008-04-28T15:58:39+00:00

This adds the ability to suspend/resume the lxfb driver, which includes:
  - Register and palette saving code; registers are stored in lxfb_par.
    A few MSR values are saved as well.
  - lx_powerup and lx_powerdown functions which restore/save registers and
    enable/disable graphic engines.
  - lxfb_suspend/lxfb_resume

Originally based on a patch by Jordan Crouse.

[akpm@linux-foundation.org: be conventional, save an ifdef]
Signed-off-by: Andres Salomon 
Cc: "Antonino A. Daplas" 
Cc: Jordan Crouse 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds