diff options
| author | Jordan Crouse <jcrouse@codeaurora.org> | 2017-04-03 08:29:34 -0600 |
|---|---|---|
| committer | Jordan Crouse <jcrouse@codeaurora.org> | 2017-04-26 10:17:55 -0600 |
| commit | f567fc12bf30e7ffff689dbd528dfa24216bc8f8 (patch) | |
| tree | e3ab274ee865f97e6967a3564eb9759ead89b4c0 /drivers/gpu/drm/msm/msm_gem.c | |
| parent | 048c70075fecb8f92d923fc5595efa00f2a00082 (diff) | |
drm/msm: Add explicit sync operations
Add sync operations to give the user more control
over the behavior of cached buffers.
Change-Id: Ic0dedbad67e19a6b30b2cc5f6b2c7bbe52c2b708
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Diffstat (limited to 'drivers/gpu/drm/msm/msm_gem.c')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_gem.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c index d1455fbc980e..d35d03c2935d 100644 --- a/drivers/gpu/drm/msm/msm_gem.c +++ b/drivers/gpu/drm/msm/msm_gem.c @@ -546,6 +546,26 @@ int msm_gem_cpu_fini(struct drm_gem_object *obj) return 0; } +void msm_gem_sync(struct drm_gem_object *obj, u32 op) +{ + struct drm_device *dev = obj->dev; + struct msm_gem_object *msm_obj = to_msm_bo(obj); + + if (msm_obj->flags & (MSM_BO_WC|MSM_BO_UNCACHED)) + return; + + switch (op) { + case MSM_GEM_SYNC_TO_CPU: + dma_sync_sg_for_cpu(dev->dev, msm_obj->sgt->sgl, + msm_obj->sgt->nents, DMA_BIDIRECTIONAL); + break; + case MSM_GEM_SYNC_TO_DEV: + dma_sync_sg_for_device(dev->dev, msm_obj->sgt->sgl, + msm_obj->sgt->nents, DMA_BIDIRECTIONAL); + break; + } +} + #ifdef CONFIG_DEBUG_FS void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m) { |