[11/19] drm/sun4i: framebuffer: Add a custom atomic_check

Commit Message

Maxime Ripard Jan. 9, 2018, 10:56 a.m. UTC

In order to support normalized zpos, we need to call
drm_atomic_normalize_zpos in our driver's drm_mode_config_funcs'
atomic_check.

Let's duplicate the definition of drm_atomic_helper_check for now.

Signed-off-by: Maxime Ripard <[e-mail]>
---
 drivers/gpu/drm/sun4i/sun4i_framebuffer.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

Patch

diff --git a/drivers/gpu/drm/sun4i/sun4i_framebuffer.c b/drivers/gpu/drm/sun4i/sun4i_framebuffer.c
index a01a5b7d46e6..e68004844abe 100644
--- a/drivers/gpu/drm/sun4i/sun4i_framebuffer.c
+++ b/drivers/gpu/drm/sun4i/sun4i_framebuffer.c
@@ -26,9 +26,21 @@  static void sun4i_de_output_poll_changed(struct drm_device *drm)
 	drm_fbdev_cma_hotplug_event(drv->fbdev);
 }
 
+static int sun4i_de_atomic_check(struct drm_device *dev,
+				 struct drm_atomic_state *state)
+{
+	int ret;
+
+	ret = drm_atomic_helper_check_modeset(dev, state);
+	if (ret)
+		return ret;
+
+	return drm_atomic_helper_check_planes(dev, state);
+}
+
 static const struct drm_mode_config_funcs sun4i_de_mode_config_funcs = {
 	.output_poll_changed	= sun4i_de_output_poll_changed,
-	.atomic_check		= drm_atomic_helper_check,
+	.atomic_check		= sun4i_de_atomic_check,
 	.atomic_commit		= drm_atomic_helper_commit,
 	.fb_create		= drm_gem_fb_create,
 };