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authorAlex Deucher <alexdeucher@gmail.com>2009-12-09 14:40:06 -0500
committerDave Airlie <airlied@redhat.com>2009-12-10 15:09:05 +1000
commit69b3b5e59bc763c30d0098ae4bbe1225c0e82a04 (patch)
tree0e76e8bc46d589419eb16769a2c3560810395ac7 /drivers/gpu/drm/radeon/rs690.c
parent2e7b6f7fa62d92d941c626f8ae45f5cd75a52d55 (diff)
downloadop-kernel-dev-69b3b5e59bc763c30d0098ae4bbe1225c0e82a04.zip
op-kernel-dev-69b3b5e59bc763c30d0098ae4bbe1225c0e82a04.tar.gz
drm/radeon/kms/avivo: fix some bugs in the display bandwidth setup
Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@linux.ie>
Diffstat (limited to 'drivers/gpu/drm/radeon/rs690.c')
-rw-r--r--drivers/gpu/drm/radeon/rs690.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/gpu/drm/radeon/rs690.c b/drivers/gpu/drm/radeon/rs690.c
index eb486ee..9807936 100644
--- a/drivers/gpu/drm/radeon/rs690.c
+++ b/drivers/gpu/drm/radeon/rs690.c
@@ -260,8 +260,9 @@ void rs690_crtc_bandwidth_compute(struct radeon_device *rdev,
b.full = rfixed_const(mode->crtc_hdisplay);
c.full = rfixed_const(256);
- a.full = rfixed_mul(wm->num_line_pair, b);
- request_fifo_depth.full = rfixed_div(a, c);
+ a.full = rfixed_div(b, c);
+ request_fifo_depth.full = rfixed_mul(a, wm->num_line_pair);
+ request_fifo_depth.full = rfixed_ceil(request_fifo_depth);
if (a.full < rfixed_const(4)) {
wm->lb_request_fifo_depth = 4;
} else {
@@ -390,6 +391,7 @@ void rs690_crtc_bandwidth_compute(struct radeon_device *rdev,
a.full = rfixed_const(16);
wm->priority_mark_max.full = rfixed_const(crtc->base.mode.crtc_hdisplay);
wm->priority_mark_max.full = rfixed_div(wm->priority_mark_max, a);
+ wm->priority_mark_max.full = rfixed_ceil(wm->priority_mark_max);
/* Determine estimated width */
estimated_width.full = tolerable_latency.full - wm->worst_case_latency.full;
@@ -399,6 +401,7 @@ void rs690_crtc_bandwidth_compute(struct radeon_device *rdev,
} else {
a.full = rfixed_const(16);
wm->priority_mark.full = rfixed_div(estimated_width, a);
+ wm->priority_mark.full = rfixed_ceil(wm->priority_mark);
wm->priority_mark.full = wm->priority_mark_max.full - wm->priority_mark.full;
}
}
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