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drm/radeon/kms: disable D1VGA and D2VGA if enabled 

Once kms is enabled we don't need these, and it causes a problem
with the Lenovo W500 ACPI brightness implementation, it hangs
in a loop inside an SMI.

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie 2009-11-03 13:23:15 +10:00 committed by Dave Airlie
parent d6f28938d9
commit 8a9832e89f
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/radeon/rv515.c
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@ -137,6 +137,8 @@ int rv515_mc_wait_for_idle(struct radeon_device *rdev)
void rv515_vga_render_disable(struct radeon_device *rdev)
{
WREG32(R_000330_D1VGA_CONTROL, 0);
WREG32(R_000338_D2VGA_CONTROL, 0);
WREG32(R_000300_VGA_RENDER_CONTROL,
RREG32(R_000300_VGA_RENDER_CONTROL) & C_000300_VGA_VSTATUS_CNTL);
}