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author | Inki Dae <inki.dae@samsung.com> | 2014-10-05 19:15:50 -0700 |
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committer | Gerrit Code Review <gerrit@review.vlan103.tizen.org> | 2014-10-05 19:15:50 -0700 |
commit | e64d922496672b66a47b07146162678a861731b9 (patch) | |
tree | d926cb9073999fc3b3e842a6510b0aa5d0289de0 | |
parent | 313b8a5a30d2944ba0d00b402e0a6d53c42924bc (diff) | |
parent | 3ee5a94e2d731c737141367ad78f8527b4bdc7bc (diff) | |
download | linux-3.10-e64d922496672b66a47b07146162678a861731b9.tar.gz linux-3.10-e64d922496672b66a47b07146162678a861731b9.tar.bz2 linux-3.10-e64d922496672b66a47b07146162678a861731b9.zip |
Merge "drm/exynos: fimd: fix screen shaking issue" into tizen
-rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_fimd.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c index 6e5e1a84d72..e7cc2ab311a 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c @@ -636,6 +636,25 @@ static void fimd_win_commit(struct exynos_drm_manager *mgr, int zpos) } /* + * Wait for the completion of current transmission if fimd is still + * transmitting video data. + * + * Below codes resolve following issue: + * when resumed, fimd_win_commit() could be called to update overlay + * relevent registers and then pae flip could be performed by userspace + * request. The problem is that te interrupt could occur and + * fimd_trigger() could be called before fimd_win_commit is called by + * page flip function, exynos_drm_crtc_page_flip. + * + * In this case, there is a problem that fimd_win_commit() is called by + * the page flip request while fimd is still transmitting video data + * so overlay registers are updated to new buffer. That makes screen + * to be shaked. + */ + if (ctx->i80_if && atomic_read(&ctx->triggering)) + fimd_wait_for_vblank(mgr); + + /* * SHADOWCON/PRTCON register is used for enabling timing. * * for example, once only width value of a register is set, |