Adam Jackson 3b5c78a35c drm/i915/dp: Dither down to 6bpc if it makes the mode fit ...

Some active adaptors (VGA usually) only have two lanes at 2.7GHz.
That's a maximum pixel clock of 144MHz at 8bpc, but 192MHz at 6bpc.

Fixes Asus UX31 panel being black at startup due to no valid modes since
dc22ee6fc1.

v2: Rebased to current code, resulting in the fix applying to EDP panels as
    well.  Also changed from spatio-temporal to just spatial dithering on
    pre-ironlake, to be conssitent (and less visual flicker)

Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Tested-by: Eric Anholt <eric@anholt.net>
Tested-by: Dirk Hohndel <hohndel@infradead.org>
Signed-off-by: Keith Packard <keithp@keithp.com>

2011-12-16 08:49:59 -08:00

..

drm

drm/i915/dp: Dither down to 6bpc if it makes the mode fit

2011-12-16 08:49:59 -08:00

stub

i915: select VIDEO_OUTPUT_CONTROL for ACPI_VIDEO

2011-04-13 09:10:25 +10:00

vga

drivers/gpu/vga/vgaarb.c: add missing kfree

2011-11-22 20:21:10 +00:00

Makefile

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