diff options
| author | Jesse Barnes <jbarnes@virtuousgeek.org> | 2010-08-18 13:20:54 -0700 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2010-08-21 22:59:23 -0700 |
| commit | 9d0498a2bf7455159b317f19531a3e5db2ecc9c4 (patch) | |
| tree | 41f2a8b1013d2ee12852d8885b9952120f3d6ebb /drivers/gpu/drm/i915/i915_reg.h | |
| parent | d240f20f545fa4ed78ce48d1eb62ab529f2b1467 (diff) | |
drm/i915: wait for actual vblank, not just 20ms
Waiting for a hard coded 20ms isn't always enough to make sure a vblank
period has actually occurred, so add code to make sure we really have
passed through a vblank period (or that the pipe is off when disabling).
This prevents problems with mode setting and link training, and seems to
fix a bug like https://bugs.freedesktop.org/show_bug.cgi?id=29278, but
on an HP 8440p instead. Hopefully also fixes
https://bugs.freedesktop.org/show_bug.cgi?id=29141.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
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 a63e9a17638..67e3ec1a6af 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -2081,6 +2081,7 @@ #define PIPE_DITHER_TYPE_ST01 (1 << 2) /* Pipe A */ #define PIPEADSL 0x70000 +#define DSL_LINEMASK 0x00000fff #define PIPEACONF 0x70008 #define PIPEACONF_ENABLE (1<<31) #define PIPEACONF_DISABLE 0 |