diff options
| author | Mario Kleiner <mario.kleiner@tuebingen.mpg.de> | 2010-12-08 04:07:19 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2010-12-16 21:02:24 +0000 |
| commit | 0af7e4dff50454905092d468e91c1ef92e10e6b4 (patch) | |
| tree | 6c1c9542720c6cf3b6de7a9ac6e8216ba55aebbc /drivers/gpu/drm/i915/i915_reg.h | |
| parent | d8c58fabd75021cdd99abcd96513cb088d41092b (diff) | |
drm/i915: Add support for precise vblank timestamping (v2)
v2: Change IS_IRONLAKE to IS_GEN5 to adapt to 2.6.37
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.
.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 patch modifies the pageflip completion routine
to use these precise vblank timestamps as the timestamps
for pageflip completion events.
This code has been only tested on a HP-Mini Netbook with
Atom processor and Intel 945GME gpu. The codepath for
(IS_G4X(dev) || IS_GEN5(dev) || IS_GEN6(dev)) gpu's
has not been tested so far due to lack of hardware.
Signed-off-by: Mario Kleiner <mario.kleiner@tuebingen.mpg.de>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_reg.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 820e9dfaadc..c2231f7d2d9 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -2253,6 +2253,7 @@ #define PIPESRC(pipe) _PIPE(pipe, PIPEASRC, PIPEBSRC) #define PIPECONF(pipe) _PIPE(pipe, PIPEACONF, PIPEBCONF) #define PIPEDSL(pipe) _PIPE(pipe, PIPEADSL, PIPEBDSL) +#define PIPEFRAMEPIXEL(pipe) _PIPE(pipe, PIPEAFRAMEPIXEL, PIPEBFRAMEPIXEL) #define DSPARB 0x70030 #define DSPARB_CSTART_MASK (0x7f << 7) |