diff options
| author | Ilija Hadzic <ilijahadzic@gmail.com> | 2013-05-08 22:39:40 -0400 |
|---|---|---|
| committer | Michel Dänzer <michel@daenzer.net> | 2013-05-29 15:09:13 +0200 |
| commit | 5fd2eb5d12cea32927a9e6c6ce4afd18aa7d046a (patch) | |
| tree | 14fe7c18e24b44a589cadf03577422e80f278b7d /src/drmmode_display.h | |
| parent | e41ad30d09be4962cfb1942b0b9f63875dbb2d2a (diff) | |
drmmode: calculate interpolated vblanks while in dpms-off state
This adds provisions for interpolating vblanks while the CRTC
is in DPMS-off state. When entering DPMS-off state, we
record the last vblank time, sequence number and frame rate
in CRTC-private structure.
When going back to DPMS-on state we read the current
time and calculate how long we have been off. Then we derive
how many vblanks that would have been had the CRTC remained
running. These are the interpolated vblanks.
Finally, we accumulate the number of interpolated vblanks
in CRTC-private structure to get the number of interpolated
vblanks over the system lifetime.
v2: Track frame rate instead of vblank period. The former
eliminates some roundoff errors.
Signed-off-by: Ilija Hadzic <ihadzic@research.bell-labs.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'src/drmmode_display.h')
| -rw-r--r-- | src/drmmode_display.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/drmmode_display.h b/src/drmmode_display.h index add2ee48..2fccfda7 100644 --- a/src/drmmode_display.h +++ b/src/drmmode_display.h @@ -76,6 +76,10 @@ typedef struct { struct radeon_bo *rotate_bo; unsigned rotate_fb_id; int dpms_mode; + CARD64 dpms_last_ust; + uint32_t dpms_last_seq; + int dpms_last_fps; + uint32_t interpolated_vblanks; uint16_t lut_r[256], lut_g[256], lut_b[256]; } drmmode_crtc_private_rec, *drmmode_crtc_private_ptr; |