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cirrusfb: Laguna chipset 8bpp fix

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Fix 8bpp mode by adding handling of the Laguna chipsets to various places
and stop trashing a HDR register which probably does not exist on the
Laguna.

Fix compilation warnings about uninitialized variables also.

Finally, all 8bpp, 16bpp and 32bpp modes work on the Laguna chipset.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Krzysztof Helt
2009-03-31 15:25:08 -07:00
committed by Linus Torvalds
parent 48c329e906
commit 1b48cb563d
2 changed files with 21 additions and 14 deletions
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include/video/cirrus.h
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@@ -32,7 +32,6 @@
#define CL_VSSM2 0x3c3 /* Motherboard Sleep */
/*** VGA Sequencer Registers ***/
#define CL_SEQR0 0x0 /* Reset */
/* the following are from the "extension registers" group */
#define CL_SEQR6 0x6 /* Unlock ALL Extensions */
#define CL_SEQR7 0x7 /* Extended Sequencer Mode */