The patch titled
viafb: fix acceleration for some chips
has been added to the -mm tree. Its filename is
viafb-fix-acceleration-for-some-chips.patch
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------------------------------------------------------
Subject: viafb: fix acceleration for some chips
From: Erik-Jan Post <ej.lfs@xxxxxxxxx>
Fix a regression in hardware acceleration which made the accelerated
framebuffer unusable on some chips. These need extra initialization and
an extra flag which is no longer needed/available on current chips.
Signed-off-by: Erik-Jan Post <ej.lfs@xxxxxxxxx>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@xxxxxx>
Cc: Scott Fang <ScottFang@xxxxxxxxxxxxxx>
Cc: Joseph Chan <JosephChan@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/video/via/accel.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff -puN drivers/video/via/accel.c~viafb-fix-acceleration-for-some-chips drivers/video/via/accel.c
--- a/drivers/video/via/accel.c~viafb-fix-acceleration-for-some-chips
+++ a/drivers/video/via/accel.c
@@ -137,7 +137,7 @@ static int hw_bitblt_1(void __iomem *eng
tmp, dst_pitch);
return -EINVAL;
}
- tmp = (tmp >> 3) | (dst_pitch << (16 - 3));
+ tmp = VIA_PITCH_ENABLE | (tmp >> 3) | (dst_pitch << (16 - 3));
writel(tmp, engine + 0x38);
if (op == VIA_BITBLT_FILL)
@@ -352,6 +352,9 @@ int viafb_init_engine(struct fb_info *in
viapar->shared->vq_vram_addr = viapar->fbmem_free;
viapar->fbmem_used += VQ_SIZE;
+ /* Init 2D engine reg to reset 2D engine */
+ writel(0x0, engine + VIA_REG_KEYCONTROL);
+
/* Init AGP and VQ regs */
switch (chip_name) {
case UNICHROME_K8M890:
_
Patches currently in -mm which might be from ej.lfs@xxxxxxxxx are
viafb-do-modesetting-after-updating-variables.patch
viafb-fix-acceleration-for-some-chips.patch
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