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drm/exynos: support drm_wait_vblank feature for VIDI
this patch adds drm_wait_vblank support to Virtual Display module so user can use DRM_IOCT_WAIT_VBLANK ioctl with this patch. for this, you should set _DRM_VBLANK_EXYNOS_VIDI flags to vblwait->request.type Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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32aeab1745
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291257cf4c
2 changed files with 31 additions and 1 deletions
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@ -56,6 +56,7 @@ struct vidi_context {
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unsigned int connected;
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bool vblank_on;
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bool suspended;
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bool direct_vblank;
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struct work_struct work;
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struct mutex lock;
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};
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@ -224,6 +225,15 @@ static int vidi_enable_vblank(struct device *dev)
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if (!test_and_set_bit(0, &ctx->irq_flags))
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ctx->vblank_on = true;
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ctx->direct_vblank = true;
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/*
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* in case of page flip request, vidi_finish_pageflip function
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* will not be called because direct_vblank is true and then
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* that function will be called by overlay_ops->commit callback
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*/
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schedule_work(&ctx->work);
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return 0;
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}
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@ -425,7 +435,17 @@ static void vidi_fake_vblank_handler(struct work_struct *work)
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/* refresh rate is about 50Hz. */
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usleep_range(16000, 20000);
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drm_handle_vblank(subdrv->drm_dev, manager->pipe);
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mutex_lock(&ctx->lock);
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if (ctx->direct_vblank) {
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drm_handle_vblank(subdrv->drm_dev, manager->pipe);
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ctx->direct_vblank = false;
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mutex_unlock(&ctx->lock);
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return;
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}
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mutex_unlock(&ctx->lock);
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vidi_finish_pageflip(subdrv->drm_dev, manager->pipe);
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}
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@ -107,6 +107,16 @@ struct drm_exynos_vidi_connection {
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uint64_t edid;
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};
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/* Indicate Exynos specific vblank flags */
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enum e_drm_exynos_vblank {
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/*
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* this flags is used for Virtual Display module
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* to use DRM_IOCTL_WAIT_VBLANK feature. for this,
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* user should set this flag to vblwait->request.type
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*/
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_DRM_VBLANK_EXYNOS_VIDI = 2,
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};
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/* memory type definitions. */
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enum e_drm_exynos_gem_mem_type {
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/* Physically Continuous memory and used as default. */
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