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drm/radeon/kms: display watermark updates (v2)

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- Add module option to force the display priority
  0 = auto, 1 = normal, 2 = high
- Default to high on r3xx/r4xx/rv515 chips
  Fixes flickering problems during heavy acceleration
  due to underflow to the display controllers
- Fill in minimal support for RS600

v2 - update display priority when bandwidth is updated
so the user can change the parameter at runtime and it
will take affect on the next modeset.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher
2010-03-31 00:33:27 -04:00
committed by Dave Airlie
parent 3b01a1191f
commit f46c01208d
9 changed files with 155 additions and 21 deletions
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2
drivers/gpu/drm/radeon/r100.c
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@@ -2389,6 +2389,8 @@ void r100_bandwidth_update(struct radeon_device *rdev)
uint32_t pixel_bytes1 = 0;
uint32_t pixel_bytes2 = 0;
radeon_update_display_priority(rdev);
if (rdev->mode_info.crtcs[0]->base.enabled) {
mode1 = &rdev->mode_info.crtcs[0]->base.mode;
pixel_bytes1 = rdev->mode_info.crtcs[0]->base.fb->bits_per_pixel / 8;