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drm/exynos: support drm_wait_vblank feature for VIDI

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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>
This commit is contained in:
Inki Dae 2012-09-19 11:02:43 +09:00
parent 32aeab1745
commit 291257cf4c
2 changed files with 31 additions and 1 deletions
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22
drivers/gpu/drm/exynos/exynos_drm_vidi.c
View file

@ -56,6 +56,7 @@ struct vidi_context {
unsigned int connected;
bool vblank_on;
bool suspended;
bool direct_vblank;
struct work_struct work;
struct mutex lock;
};
@ -224,6 +225,15 @@ static int vidi_enable_vblank(struct device *dev)
if (!test_and_set_bit(0, &ctx->irq_flags))
ctx->vblank_on = true;
ctx->direct_vblank = true;
/*
* in case of page flip request, vidi_finish_pageflip function
* will not be called because direct_vblank is true and then
* that function will be called by overlay_ops->commit callback
*/
schedule_work(&ctx->work);
return 0;
}
@ -425,7 +435,17 @@ static void vidi_fake_vblank_handler(struct work_struct *work)
/* refresh rate is about 50Hz. */
usleep_range(16000, 20000);
drm_handle_vblank(subdrv->drm_dev, manager->pipe);
mutex_lock(&ctx->lock);
if (ctx->direct_vblank) {
drm_handle_vblank(subdrv->drm_dev, manager->pipe);
ctx->direct_vblank = false;
mutex_unlock(&ctx->lock);
return;
}
mutex_unlock(&ctx->lock);
vidi_finish_pageflip(subdrv->drm_dev, manager->pipe);
}

10
include/drm/exynos_drm.h
View file

@ -107,6 +107,16 @@ struct drm_exynos_vidi_connection {
uint64_t edid;
};
/* Indicate Exynos specific vblank flags */
enum e_drm_exynos_vblank {
/*
* this flags is used for Virtual Display module
* to use DRM_IOCTL_WAIT_VBLANK feature. for this,
* user should set this flag to vblwait->request.type
*/
_DRM_VBLANK_EXYNOS_VIDI = 2,
};
/* memory type definitions. */
enum e_drm_exynos_gem_mem_type {
/* Physically Continuous memory and used as default. */