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| author | Mario Kleiner <mario.kleiner@tuebingen.mpg.de> | 2010-10-23 04:42:17 +0200 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2010-11-22 11:48:26 +1000 |
| commit | f5a8020903932624cf020dc72455a10a3e005087 (patch) | |
| tree | fed9a5a2acadf001d5866d42dad8b308f864ac75 /drivers/gpu/drm/radeon/radeon_pm.c | |
| parent | 27641c3f003e7f3b6585c01d8a788883603eb262 (diff) | |
| download | kernel_samsung_smdk4412-f5a8020903932624cf020dc72455a10a3e005087.zip kernel_samsung_smdk4412-f5a8020903932624cf020dc72455a10a3e005087.tar.gz kernel_samsung_smdk4412-f5a8020903932624cf020dc72455a10a3e005087.tar.bz2 | |
drm/kms/radeon: Add support for precise vblank timestamping.
This patch adds new functions for use by the drm core:
.get_vblank_timestamp() provides a precise timestamp
for the end of the most recent (or current) vblank
interval of a given crtc, as needed for the DRI2
implementation of the OML_sync_control extension.
It is a thin wrapper around the drm function
drm_calc_vbltimestamp_from_scanoutpos() which does
almost all the work and is shared across drivers.
.get_scanout_position() provides the current horizontal
and vertical video scanout position and "in vblank"
status of a given crtc, as needed by the drm for use by
drm_calc_vbltimestamp_from_scanoutpos().
The function is also used by the dynamic gpu reclocking
code to determine when it is safe to reclock inside vblank.
For that purpose radeon_pm_in_vbl() is modified to
accomodate a small change in the function prototype of
the radeon_get_crtc_scanoutpos() which is hooked up to
.get_scanout_position().
This code has been tested on AVIVO hardware, a RV530
(ATI Mobility Radeon X1600) in a Intel Core-2 Duo MacBookPro
and some R600 variant (FireGL V7600) in a single cpu
AMD Athlon 64 PC.
Signed-off-by: Mario Kleiner <mario.kleiner@tuebingen.mpg.de>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_pm.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_pm.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c index 8c9b2ef..5eda5e4 100644 --- a/drivers/gpu/drm/radeon/radeon_pm.c +++ b/drivers/gpu/drm/radeon/radeon_pm.c @@ -720,9 +720,9 @@ static bool radeon_pm_in_vbl(struct radeon_device *rdev) */ for (crtc = 0; (crtc < rdev->num_crtc) && in_vbl; crtc++) { if (rdev->pm.active_crtcs & (1 << crtc)) { - vbl_status = radeon_get_crtc_scanoutpos(rdev, crtc, &vpos, &hpos); - if ((vbl_status & RADEON_SCANOUTPOS_VALID) && - !(vbl_status & RADEON_SCANOUTPOS_INVBL)) + vbl_status = radeon_get_crtc_scanoutpos(rdev->ddev, crtc, &vpos, &hpos); + if ((vbl_status & DRM_SCANOUTPOS_VALID) && + !(vbl_status & DRM_SCANOUTPOS_INVBL)) in_vbl = false; } } |