From: Erik-Jan Post <ej.lfs@xxxxxxxxx>
viafb: fix acceleration for some chips
This patch fixes 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>
---
drivers/video/via/accel.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/drivers/video/via/accel.c b/drivers/video/via/accel.c
index 9d4f3a4..d5077df 100644
--- a/drivers/video/via/accel.c
+++ b/drivers/video/via/accel.c
@@ -137,7 +137,7 @@ static int hw_bitblt_1(void __iomem *engine, u8 op, u32 width, u32 height,
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 *info)
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:
--
1.6.3.2
--
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