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drm/vmwgfx: Fix LDU X blank screen until mode change issue 

vmw_ldu_crtc_helper_commit() is not called if
drm_atomic_crtc_needs_modeset() decides nothing related to CRTC timing has
changed.

So a better place for this code is in vmw_ldu_primary_plane_atomic_update()
since we will need to update ld->fb every time the FB is updated.

Signed-off-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
This commit is contained in:
Sinclair Yeh 2017-03-23 14:42:36 -07:00
parent 5c6089a1df
commit e9cebe837b
1 changed files with 21 additions and 20 deletions
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41
drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
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@ -226,24 +226,6 @@ static void vmw_ldu_crtc_helper_prepare(struct drm_crtc *crtc)
*/
static void vmw_ldu_crtc_helper_commit(struct drm_crtc *crtc)
{
struct vmw_private *dev_priv;
struct vmw_legacy_display_unit *ldu;
struct vmw_framebuffer *vfb;
struct drm_framebuffer *fb;
ldu = vmw_crtc_to_ldu(crtc);
dev_priv = vmw_priv(crtc->dev);
fb = crtc->primary->state->fb;
vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL;
if (vfb)
vmw_ldu_add_active(dev_priv, ldu, vfb);
else
vmw_ldu_del_active(dev_priv, ldu);
vmw_ldu_commit_list(dev_priv);
}
/**
@ -310,7 +292,7 @@ drm_connector_helper_funcs vmw_ldu_connector_helper_funcs = {
*/
/**
* vmw_ldu_primary_plane_cleanup_fb - Unpin fb
* vmw_ldu_primary_plane_cleanup_fb - Noop
*
* @plane: display plane
* @old_state: Contains the FB to clean up
@ -327,7 +309,7 @@ vmw_ldu_primary_plane_cleanup_fb(struct drm_plane *plane,
/**
* vmw_ldu_primary_plane_prepare_fb -
* vmw_ldu_primary_plane_prepare_fb - Noop
*
* @plane: display plane
* @new_state: info on the new plane state, including the FB
@ -346,6 +328,25 @@ static void
vmw_ldu_primary_plane_atomic_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct vmw_private *dev_priv;
struct vmw_legacy_display_unit *ldu;
struct vmw_framebuffer *vfb;
struct drm_framebuffer *fb;
struct drm_crtc *crtc = plane->state->crtc ?: old_state->crtc;
ldu = vmw_crtc_to_ldu(crtc);
dev_priv = vmw_priv(plane->dev);
fb = plane->state->fb;
vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL;
if (vfb)
vmw_ldu_add_active(dev_priv, ldu, vfb);
else
vmw_ldu_del_active(dev_priv, ldu);
vmw_ldu_commit_list(dev_priv);
}